US Pat. No. 10,323,961

MOTOR-DRIVEN INTEGRATED CIRCUIT, MOTOR DEVICE, AND APPLICATION APPARATUS

JOHNSON ELECTRIC INTERNAT...

1. A motor driver integrated circuit, comprising:a multiple-time programmable memory storing a motor driver program;
a memory having a capacity larger than or equal to a capacity of the multiple-time programmable memory; and
a central processing unit; wherein when the motor driver integrated circuit is powered or reset, a boot loader is performed and the motor driver program is copied to the memory by the central processing unit from the multiple-time programmable memory, and the motor driver program is performed by the central processing unit from the memory.

US Pat. No. 10,199,965

MAGNETIC SENSOR INTEGRATED CIRCUIT, MOTOR ASSEMBLY AND APPLICATION APPARATUS

JOHNSON ELECTRIC INTERNAT...

1. A magnetic sensor integrated circuit, comprising:a magnetic sensor receiving a constant current outputting a differential signal;
a signal processing unit converting the differential signal into a magnetic field detection signal; and
an output control circuit controlling, at least based on the magnetic field detection signal, the magnetic sensor integrated circuit to operate in at least one state of a first state in which a current flows from an output port of the magnetic sensor integrated circuit to an outside of the magnetic sensor integrated circuit and a second state in which a current flows from the outside into the output port; and
wherein the differential signal comprises a magnetic field signal and an offset signal, the signal processing unit comprises a first chopping switch to modulate the magnetic field signal and the offset signal to a high-frequency region and a baseband frequency respectively.

US Pat. No. 10,288,088

IMPELLER FOR AN ELECTRIC FAN

JOHNSON ELECTRIC INTERNAT...

1. An impeller for an electric fan, comprising:a hub arranged to be connected to a rotor of an electric motor, and having a substantially bowl-like shape, with an end wall which is connected to an annular lateral wall which is approximately cylindrical;
a plurality of blades extending from the hub;
a plurality of slots formed in the end wall of the hub, the plurality of slots being spaced apart circumferentially, and extending in directions angled with respect to radial directions of the hub; and
a plurality of ribs protruding from an inner surface of said end wall of the hub adjacent to the plurality of slots, the plurality of ribs extending in directions angled with respect to radial directions of the hub and being adapted to serve as inner fan blades,
wherein each of the plurality of ribs has at least one substantially transverse interruption in a predetermined position to cut a corresponding rib into at least two discontiguous segments, and thus reducing vibration of the impeller, and
wherein the at least one substantially transverse interruption is a rectangular notch when viewed from the axial direction of the hub.

US Pat. No. 10,483,948

RC OSCILLATOR, MOTOR-DRIVEN INTEGRATED CIRCUIT, AND MOTOR DEVICE

Johnson Electric Internat...

1. A motor driving integrated circuit, comprising:a RC oscillator including a resistor unit having at least one set of compensation resistor, wherein each set of compensation resistor comprises a positive temperature coefficient resistor and a negative temperature coefficient resistor coupled in series with the positive temperature coefficient resistor; and
wherein during a power-on period of the motor driving integrated circuit, a frequency of a system clock signal output by the RC oscillator is one quarter of a highest frequency of the system clock signal.

US Pat. No. 10,439,529

MOTOR COMPONENT, APPLICATION DEVICE AND SENSOR INTEGRATED CIRCUIT

JOHNSON ELECTRIC INTERNAT...

1. A sensor integrated circuit, comprising: a housing, a semiconductor substrate arranged inside the housing, an output port extending out from the housing, input ports configured to connect an alternate current power supply, and an electronic circuitry arranged on the semiconductor substrate, wherein the electronic circuitry comprises a rectifier, a power supply module, an output control circuit and a detecting circuit, whereinthe rectifier is configured to convert the alternate current power supply into a first direct current power supply;
the power supply module comprises a voltage regulator configured to generate a second direct current power supply different from the first direct current power supply;
the detecting circuit is powered by the second direct current power supply and is configured to detect a signal inputted to the sensor integrated circuit and correspondingly generate a control signal;
the output control circuit is directly powered by the first direct current power supply, an average value of the first direct current power supply is higher than an average value of the second direct current power supply;
the output control circuit is coupled to a control terminal of a controllable bidirectional alternate current switch and the output control circuit controls the controllable bidirectional alternate current switch to be switched between a switch-on state and a switch-off state at least according to a polarity of the alternate current power supply and the control signal; when the control signal is at a first level and the alternate current power supply is in a positive half-period, a current flows from the output port to an outside of the sensor integrated circuit to control the controllable bidirectional alternate current switch to be on the switch-on state; when the control signal is at a second level and the alternate current power supply is in a negative half-period, the current flows from the outside of the integrated circuit to the output port to control the controllable bidirectional alternate current switch to be on the switch-off state.

US Pat. No. 10,312,753

SINGLE PHASE PERMANENT MAGNET MOTOR

JOHNSON ELECTRIC INTERNAT...

1. A single phase permanent magnet motor comprising:a stator core comprising an end portion and a pole arm extending from the end portion, the pole arm comprising two connecting arms connected to the end portion and two pole claws formed at distal ends of the connecting arms, and
a permanent magnet rotor rotatably disposed in the stator core between the two pole claws, the rotor comprising a rotor core and a plurality of permanent magnets embedded in the rotor core, and the rotor core being made of a magnetic material;
wherein an inner surface of the pole claws of the stator core is recessed inwardly to form two startup grooves, and the two startup grooves are offset from a central axis of the pole claws and are spaced 180 degrees in the circumferential direction.

US Pat. No. 10,290,449

ELECTRIC SWITCH

JOHNSON ELECTRIC INTERNAT...

1. An electric switch, comprising:a housing;
a contact system;
an actuation element moving between an initial position and an actuating position for switching or changeover the contacting system;
the actuation element located in a direction of the initial position by a force of a return spring;
an engaging latch interacting with a guiding curve of a heart-shaped switching groove arranged on the actuation element to make the actuation element locked in the actuation position;
an actuator driving a non-manual unlocking of the actuation element on the engaging latch under control a drive mechanism;
wherein the drive mechanism comprises a coil and a permanent magnet, when the coil is not driven, the permanent magnet is attracted by the coil and a uniform magnetic circuit is formed between the permanent magnet and the coil; when a current flows through the coil, a magnetic field is generated to repel the permanent magnet to dive the actuation element.

US Pat. No. 10,218,230

LOW-VOLTAGE DIRECT CURRENT MOTOR

Johnson Electric Internat...

1. A brush roller for a vacuum cleaner, the brush roller being driven by a low-voltage direct current motor, the low-voltage direct current motor comprising:a stator comprising a round housing, a permanent magnet mounted to an inner surface of the housing, and brushes; and
a rotor rotatable relative to the stator, the rotor comprising a shaft, a rotor core fixed to the shaft, a commutator fixed to the shaft adjacent to the rotor core, and rotor windings wound about poles of the rotor core and electrically connected to the commutator,
wherein the brushes of the stator are disposed in sliding contact with the commutator, an input voltage of the motor is in the range of 7 to 36V, and a ratio of an outer diameter of the rotor core to an outer diameter of the housing is in the range of 67% to 75%, wherein the permanent magnet is a ferrite magnet made of a material with a maximum energy product BHmax of 35.8±1.6 kj/m3, and wherein the outer diameter of the housing is 27.5 mm±0.3 mm, and the outer diameter of the rotor core is 19 mm±0.2 mm, and wherein when an axial length of the magnet is 21.0 mm±2.1 mm, 27.5 mm±0.3 mm, or 34 mm±0.3 mm, the motor is capable of achieving a rated power output of 20 W, 50 W, or 80 W, respectively.

US Pat. No. 10,211,762

DRIVE CIRCUIT FOR A PERMANENT MAGNET MOTOR

JOHNSON ELECTRIC INTERNAT...

1. A drive circuit for an electric motor comprising a stator and a permanent magnet rotor rotatable with respect to the stator, the stator comprising a stator core and a stator coil wound on the stator core, the drive circuit comprising:a controllable bidirectional AC switch connected in series with the stator coil between two terminals for connecting to an AC power supply;
a first position sensor and a second position sensor for detecting positions of the magnetic poles of the permanent magnet rotor, the first position sensor directly coupled to a control electrode of the controllable bidirectional AC switch via a first unidirectional conductive switch and the second position sensor directly coupled to the control electrode of the controllable bidirectional AC switch via a resistor; and
a voltage regulating circuit connected between the two terminals and the controllable bidirectional AC switch and configured to supply power to the first sensor during a positive cycle of the AC power supply and to the second position sensor during a negative cycle of the AC power supply such that the first and second position sensors alternatively output a signal to the controllable bidirectional AC switch to directly switch the controllable bidirectional AC switch between a conductive state and a non-conductive state in a predetermined manner, thus enabling the stator coil to urge the rotor only in a fixed direction during start-up of the motor, and
wherein the voltage regulating circuit comprises a first zener diode and a second zener diode reversely connected in parallel between two terminals of the AC power supply at least via a first resistor and a second resistor respectively, a positive power supply terminal of the first position sensor is connected to a cathode of the first zener diode, a negative power supply terminal of the second position sensor is connected to an anode of the second zener diode, and a negative power supply terminal of the first position sensor and a positive power supply terminal of the second position sensor are connected to a reference voltage.

US Pat. No. 10,205,357

ELECTRIC MOTOR

JOHNSON ELECTRIC INTERNAT...

1. An electric motor comprising:a stator having a plurality of magnetic poles; and
a rotor rotatably mounted to the stator, the rotor comprising:
a shaft;
a commutator fixed to the shaft;
a rotor core comprising a stack of laminations fixed to the shaft and located adjacent to the commutator; and
rotor windings wound on the rotor core and electrically connected to the commutator,
wherein each lamination comprises:
an inner ring having a hole for fixing the shaft;
an outer ring radially spaced from the inner ring;
a plurality of teeth extending outwardly from the outer ring; and
a number of ribs connecting the inner ring to the outer ring, each rib having a width w measured in a circumferential direction of the lamination;
wherein the number of ribs is n, the width w and the number n satisfy the formula: 0.75?n×w2?64, where the width w of each rib is measured in millimeters, reducing the harshness of the electric motor.

US Pat. No. 10,205,413

MAGNETIC SENSOR INTEGRATED CIRCUIT, MOTOR ASSEMBLY AND APPLICATION DEVICE

JOHNSON ELECTRIC INTERNAT...

1. A magnetic sensor integrated circuit, comprising:a housing,
a semiconductor substrate arranged in the housing,
at least one input port and an output port extending out from the housing, the at least one input port being configured to connect an external power, and
an electronic circuit arranged on the semiconductor substrate,
wherein the electronic, circuit comprises:
a rectifying circuit;
a magnetic field detection circuit configured to detect an external magnetic field and output magnetic field detection information; and
an output control circuit coupled to the rectifying circuit and configured to control, at least based on the magnetic field detection information, the integrated circuit to operate in at least one of a first state in which a load current flows out from the output port to an outside of the integrated circuit and a second state in which a load current flows in from the outside of the integrated circuit to the output port, wherein the load current flows through the rectifying circuit having a first current path in which the load current flows out from the output port, a second current path in which the load current flows in from the output port, and a switch connected in control, based on the magnetic field detection information, the first current path and the second current path to be turned on selectively.

US Pat. No. 10,256,750

ELECTRONIC DEVICE HAVING DELAY CIRCUIT FOR SYNCHRONOUS STARTING OF TWO OPERATING COMPONENTS

JOHNSON ELECTRIC INTERNAT...

1. An electronic device, comprising a motor and a motor drive circuit, wherein the motor drive circuit comprises a first operating component and a second operating component, wherein,the motor drive circuit further comprises a time delay circuit configured to delay a starting time of the first operating component to be synchronous with that of the second operating component; thereby enabling the first operating component and the second operating component to be synchronously started;
wherein the electronic device further comprises a rectifier, wherein,
the rectifier comprises a first output terminal and a second output terminal; and
the time delay circuit is connected in series with the first operating component, a series branch of the time delay circuit and the first operating component is connected in parallel with the second operating component across the first output terminal and the second output terminal, and the time delay circuit is configured to adjust a voltage outputted by the first output terminal and provide the adjusted voltage for the first operating component, so that a voltage provided for the first operating component rises to a first preset value that enables starting of the first operating component when a voltage provided for the second operating component by the first output terminal rises to a second preset value that enables starting of the second operating component.

US Pat. No. 10,205,412

MOTOR DRIVING CIRCUIT AND MOTOR COMPONENT

JOHNSON ELECTRIC INTERNAT...

1. A motor driving circuit comprising:a current switch connected in series with a motor across two terminals of a power supply, wherein the current switch is connected between a first node and a second node;
a rectifying circuit having a first input terminal and a second input terminal;
a first voltage drop circuit and a second voltage drop circuit connected in series between the first input terminal of the rectifying circuit and the first node, the rectifying circuit rectifying a current supplied from the power supply through the first voltage drop circuit and the second voltage drop circuit, wherein there is a third node between the first voltage drop circuit and the second voltage drop circuit, and the first voltage drop circuit is connected between the first node and the third node; and
a switch circuit connected between the third node and a control terminal of the current switch, wherein the switch circuit comprises a first terminal, a second terminal, a control terminal and a switch arranged between the first terminal and the second terminal.

US Pat. No. 10,205,293

COMMUTATOR, MOTOR USING SAME AND METHOD OF MANUFACTURING THE COMMUTATOR

JOHNSON ELECTRIC INTERNAT...

9. A motor, comprising a housing, and a rotor and an electric brush installed in the housing, further comprising the commutator for being in sliding contact with the electric brush, wherein the commutator comprises:an insulating base, and;
a plurality of commutator segments arranged on the insulating base, each of the commutator segment comprising a metal layer, a transition layer and a graphite layer all arranged in sequence, the transition layer containing a material identical to that of the graphite layer and a material identical to that of the metal layer.

US Pat. No. 10,553,374

SWITCHING DEVICE

JOHNSON ELECTRIC INTERNAT...

1. A switching device comprising:a switch, a push button protruding out from a housing of the switch and configured to be pressed to trigger the switch;
an actuating element which is elastic arranged on the switch to operate the push button of the switch upon a force;
wherein the actuating element comprises two different arms with different lengths and the two different arms are disposed as a U-shaped shape, a long arm of the two different arms transfers force to the push-button of the switch, a free end of the long arm holds the actuating element; and
wherein a short arm of the two different arms is arranged aligned obliquely to the long arm.

US Pat. No. 10,495,102

IMPELLER AND PUMP USING THE IMPELLER

JOHNSON ELECTRIC INTERNAT...

1. An impeller comprising:a back cover plate,
a plurality of vanes disposed on the back cover plate;
a hub disposed on the back cover plate; and
a sealing ring connected to each of the vanes and disposed on ends of the vanes away from the back cover plate;
wherein the back cover plate further defines a plurality of balance holes;
wherein the number of the balance holes is equal to the number of the vanes;
wherein the plurality of balance holes is arranged into a ring in the back cover plate, and each of the vanes is disposed between two adjacent balance holes;
wherein the back cover plate further defines a plurality of through holes arranged into a ring, and the plurality of through holes are spaced from each other and evenly distributed in an annular area cooperatively bounded by the balance holes and the hub.

US Pat. No. 10,483,830

MAGNETIC SENSOR INTEGRATED CIRCUIT AND MOTOR COMPONENT

JOHNSON ELECTRIC INTERNAT...

1. A magnetic sensor integrated circuit, comprising a housing, a semiconductor substrate arranged inside the housing, input ports and an output port which extend out from the housing, and an electronic circuit arranged on the semiconductor substrate, wherein the electronic circuit comprises:a magnetic field detection circuit configured to detect and output a magnetic field inductive signal corresponding to an external magnetic field; and
a voltage detection circuit configured to detect a specific voltage, and output, in a case that the specific voltage reaches a predetermined value, a control signal for controlling the magnetic sensor integrated circuit to perform a preset action, wherein the specific voltage is a supply voltage for the magnetic field detection circuit; and the voltage detection circuit at least comprises a comparator, wherein an input terminal of the comparator receives the specific voltage, the other input terminal of the comparator receives a reference voltage, and the comparator is configured to output, in a case that the specific voltage is higher than the reference voltage, the control signal for controlling the magnetic sensor integrated circuit to perform a specific action;
wherein the voltage detection circuit and the magnetic field detection circuit operate simultaneously.

US Pat. No. 10,431,363

PLUNGER FOR MAGNETIC LATCHING SOLENOID ACTUATOR

JOHNSON ELECTRIC INTERNAT...

1. A plunger for a magnetic latching solenoid actuator, the plunger comprising:an elongate plunger body; and
a plunger head at one end of the plunger body;
a first portion of the plunger body;
a second portion of the plunger body having a same transverse cross-section as a transverse cross-section of the first portion;
a magnet-interface body portion of the body portion between the first portion of the plunger body and the second portion of the plunger body which defines first and second planar surfaces on opposite lateral sides of the plunger body with a different transverse cross-section than the transverse cross-sections of the first and second portions of the plunger body.

US Pat. No. 10,305,400

MAGNETIC SENSOR INTEGRATED CIRCUIT, MOTOR ASSEMBLY AND APPLICATION DEVICE

JOHNSON ELECTRIC INTERNAT...

1. A magnetic sensor integrated circuit, comprising:a magnetic sensing element detecting a polarity of an external magnetic field and outputting a magnetic field sensing signal;
a signal processor processing the magnetic field sensing signal and outputting a magnetic field detection signal; and
a current source generator outputting a constant current, which is not influenced by a temperature, to the magnetic sensing element, wherein the current source generator comprises a voltage source, at least one ordinary resistor connected in series to the voltage source and a temperature compensating resistor connected to the voltage source, and the voltage source outputs the constant current to the magnetic sensing element via the temperature compensating resistor, and outputs at least one current to the signal processor via the at least one ordinary resistor; wherein the at least one ordinary resistor is connected with the temperature compensating resistor in parallel; wherein the sensitivity of the magnetic sensing element is substantially maintained as a temperature changes when being driven by the constant current.

US Pat. No. 10,288,179

BALL VALVE APPARATUS

JOHNSON ELECTRIC INTERNAT...

1. A ball valve apparatus having an improved linearity of fluid flow therethrough, the ball valve apparatus comprising:a valve housing including a housing inlet and a housing outlet;
a valve ball, receivable within the valve housing, the valve ball having a bore therethrough;
a ball inlet and ball outlet of the valve ball which are in fluid communication with the bore, a fluid flow path through the ball valve apparatus being defined at least in part by the housing inlet, housing outlet, ball inlet, ball outlet and the bore;
a valve stein engagable with the valve ball; and
the valve ball being rotatable relative to the valve housing via the valve stem such that as the ball inlet and housing inlet, and ball outlet and housing outlet are brought in and out of alignment and a flow rate along the fluid flow path changing linearly or substantially linearly with a degree of rotation of the valve ball;
wherein at least one bridging element is positioned on the fluid flow path to alter a fluid flow thereacross, the or each bridging element comprises an elongate bridge body and a baffle element which extends laterally of the bridge body within the ball inlet and/or ball outlet.

US Pat. No. 10,270,325

SINGLE PHASE PERMANENT MAGNET MOTOR

JOHNSON ELECTRIC INTERNAT...

1. A single phase permanent magnet motor comprising:a stator core comprising an end portion and two arm portions extending from the end portion, each arm portion comprising a connecting arm connected to the end portion and a pole claw formed at a distal end of the connecting arm, the two pole claws defining a receiving space; and
a permanent magnet rotor rotatably disposed in the receiving space of the stator core, the rotor comprising a rotor core and at least one permanent magnet attached to the rotor core, the rotor core being made of a magnetic material,
wherein the two pole claws are spaced apart with a slot opening formed there between, and the slot opening has a width less than four times of an air gap formed between the stator core and the rotor.

US Pat. No. 10,243,416

MOTOR

JOHNSON ELECTRIC INTERNAT...

1. An electric motor comprising a stator and a rotor, wherein one of the stator and the rotor comprises:a magnetic core made from a magnetically conductive material having a reactivity, and comprising a plurality of core laminations;
wherein the core lamination has two opposite end surfaces in an axial direction of the electric motor,
a metal coating is directly coated on at least one end surface of the core lamination, and
a material of the metal coating is a mixture of zinc, aluminum and magnesium, the mixture having a reactivity greater than the reactivity of the magnetically conductive material of the magnetic core.

US Pat. No. 10,240,644

FLUID DRIVING DEVICE, MOTOR ASSEMBLY AND FRICTION CLUTCH THEREOF

JOHNSON ELECTRIC INTERNAT...

1. A friction clutch comprising:a fixing member fixed on a rotary shaft;
a connecting member disposed on the rotary shaft, the connecting member being slidable with respect to the rotary shaft, wherein when the rotary shaft starts rotating, an axial distance between the connecting member and the fixing member changes such that a friction force between the fixing member and the connecting member increases until the connecting member rotates synchronously with the fixing member;
a loading member disposed on the rotary shaft, the loading member being slidable with respect to the rotary shaft, the loading member and the connecting member being circumferentially positioned; and
a restoring member configured to reduce an amount of change of the axial distance between the fixing member and the connecting member when the rotary shaft stops rotating;
wherein the friction clutch further comprises a plurality of sliding posts, one of the connecting member and the loading member is fixedly connected with the sliding posts, and the other is slidably engaged with the sliding posts.

US Pat. No. 10,539,431

RESOLVER AND ELECTRIC MOTOR USING SAME

JOHNSON ELECTRIC INTERNAT...

1. A resolver configured to be connected to a control device trough lead wires, comprising:a resolver rotor, and
a resolver stator comprising a resolver stator core, a winding bracket mounted on the resolver stator core, and a plurality of resolver windings wound on the winding bracket, the winding bracket comprising an annular portion surrounding the resolver rotor, a connector extending outwardly from the annular portion, and a cover mounted on the connector, the connector comprising a plurality of conductive terminals connecting both the resolver winding and lead wires, and a body receiving the conductive terminals, the cover abutting against the lead wires to secure the lead wires to connector;
wherein the annular portion is mounted to an axially end of the resolver stator core, the annular portion defines a plurality of recesses depressed inwardly from the peripheral surface thereof.

US Pat. No. 10,508,931

MOTOR AND RESOLVER THEREOF

JOHNSON ELECTRIC INTERNAT...

1. A resolver comprising:a resolver stator comprising a plurality of resolver stator teeth and resolver stator windings wound around the resolver stator teeth;
a resolver rotor comprising a resolver rotor core received in a space surrounded by the resolver stator teeth and capable of rotating around a shaft axis;
wherein the resolver stator windings comprises:
a plurality of first output windings wound around each of the resolver stator teeth by a first number of turns;
a plurality of second output windings wound around each of the resolver stator teeth by a second number of turns; and
a plurality of exciting windings wound around each resolver stator teeth by a third number of turns;
wherein the resolver rotor core is in an annular shape, and the outer radius R at any one point of peripheral surface of the resolver rotor core meets:

RS is an inner radius of the resolver stator core,
Rmax is a maximum outer radius of the resolver rotor core,
Rmin is a minimum outer radius of the resolver rotor core,
? is an angle position of the any one point; and
p is the number of pole pairs of the resolver rotor core.

US Pat. No. 10,498,181

MOTOR AND METHOD FOR USING AND MAKING THE SAME

Johnson Electric Internat...

1. A stator, comprising:a first stator portion including first and second arcuate regions for facing a rotor including one or more magnetic poles and being concentrically arranged with the first stator portion relative to a central axis, the central axis being a common center of the first and second arcuate regions; and
one or more winding portions for being wound with a winding extending radially from the first stator portion away from the central axis,
wherein, when the winding is not energized, a first magnetic coupling between said first arcuate region and a selected magnetic pole of the rotor is greater than a second magnetic coupling between said second arcuate region and the selected magnetic pole, a selected winding portion being angularly offset from said first arcuate region in such a way as to enable movement of the rotor to initiate in either of two opposite directions relative to said selected winding portion upon energizing the winding.

US Pat. No. 10,491,058

SINGLE PHASE PERMANENT MAGNET MOTOR

JOHNSON ELECTRIC INTERNAT...

1. A single phase permanent magnet motor comprising:a stator comprising a stator core and a winding wound around the stator core, the stator core comprising:
at least one first stator core lamination each comprising a first outer ring portion, a plurality of first tooth bodies coupled to the first outer ring portion, and a plurality of first pole shoes each extending from a distal end to two circumferential sides of a corresponding first tooth body; and
at least one second stator core lamination stacked with the first stator core lamination, the second stator core lamination comprising a second outer ring portion, a plurality of second tooth bodies coupled to the second outer ring portion, and a plurality of second pole shoes each extending from a distal end to two circumferential sides of a corresponding second tooth body, the structures of the first pole shoes and the second pole shoes being different, the first pole shoes and the second pole shoes being stacked substantially along the axial direction of the motor; and
a rotor rotatable relative to the stator, the rotor comprising a plurality of permanent magnetic poles.

US Pat. No. 10,476,321

MAGNETIC CORE WITH MULTIPLE TEETH HAVING FOUR DIFFERENT TEETH TIPS AXIALLY OVERLAPPING

Johnson Electric Internat...

1. A magnetic core for an electric motor, comprising:a ring-shaped yoke;
teeth extending outwardly from the yoke, and
a tooth tip extending from a distal end of each tooth in a circumferential direction of the core, each tooth tip having a left half tooth tip and a right half tooth tip;
wherein the magnetic core has a plurality of lamination layers, each lamination layer comprising:
multiple teeth comprising four type teeth sequentially arranged along a clockwise direction having a first type tooth, a second type tooth, a third type tooth and a fourth type tooth, an interval between each two adjacent teeth being the same, the left half tooth tip of the first type tooth being a short tooth tip, the right half tooth tip of the first type tooth being a long tooth tip, the left and right half tooth tips of the second type tooth being both short tooth tips, the left half tooth tip of the third type tooth being a long tooth tip, the right half tooth tip of the third type tooth being a short tooth tip, the left and right half tooth tips of the fourth type tooth being both long tooth tips; and
wherein, in an axial direction of the motor, the first type tooth of at least one lamination layer overlaps with the third type tooth of another lamination layer, the second type tooth of the at least one lamination layer overlaps with the fourth type tooth of the another lamination layer, the third type tooth of the at least one lamination layer overlaps with the first type tooth of the another lamination layer, and the fourth type tooth of the at least one lamination layer overlaps with the second type tooth of the another lamination layer.

US Pat. No. 10,476,424

MOTOR APPLICATION APPARATUS AND CONTROL METHOD THEREOF

JOHNSON ELECTRIC INTERNAT...

1. A motor application apparatus, comprising:a motor;
a cooling device;
and
a microcontroller configured to output a control signal to control rotation of the motor and acquire a current and a rotation speed of the motor in real time,
wherein the microcontroller outputs a first protection signal to start the cooling device when a power loss of the motor is larger than a predetermined power loss and the rotation speed of the motor is lower than a predetermined rotation speed simultaneously; and the power loss of the motor is calculated according to a torque, an efficiency and a rotation speed;
a temperature sensor to detect a temperature of the motor;
a cooling control circuit which comprises a comparator and an OR gate, wherein a first input end of the comparator is directly connected to the temperature sensor, an output end of the comparator is directly connected to a first input end of the OR gate, an output end of the OR gate is directly coupled with the cooling device.

US Pat. No. 10,469,005

MAGNETIC SENSOR AND AN INTEGRATED CIRCUIT

JOHNSON ELECTRIC INTERNAT...

1. A magnetic sensor, comprising:an input port to be connected to an external power supply;
a magnetic field detecting circuit configured to generate a magnet detection signal;
an output control circuit configured to control operation of the magnetic sensor in response to the magnet detection signal; and
an output port,
wherein the magnetic field detecting circuit includes:
a magnetic sensing element configured to detect an external magnetic field and output a detection signal,
a signal processing element configured to amplify the detection signal and removing interference from the detection signal to generate a processed detection signal, and
a conversion element configured to convert the processed detection signal into the magnet detection signal, which is used to control the magnetic sensor to operate in at least one of a first state and a second state responsive to at least the magnet detection signal, wherein:
in the first state, a load current flows in a first direction from the output port to outside of the magnetic sensor, and
in the second state, a load current flows in a second direction opposite that of the first direction from the outside of the magnetic sensor into the output port of the magnetic sensor; and
wherein the detection signal includes a magnetic field signal and a deviation signal, the signal processing element comprises:
a first chopper switch configured to separate the detection signal into the deviation signal and the magnetic field signal corresponding to a chopper frequency and a baseband frequency, respectively;
a chopper amplifier configured to amplify the deviation signal and the magnetic field signal and to switch the amplified deviation signal and the amplified magnetic field signal onto the chopper frequency and the baseband frequency, respectively;
a filter circuit configured to filter out the deviation signal at the chopper frequency; and
a sample-and-hold circuit coupled between the chopper amplifier and the filter circuit,
wherein the sample-and-hold circuit is configured to sample a first pair of differential signals during a first half and a second half of a clock cycle, respectively, and output two pairs of sampled differential signals during the clock cycle.

US Pat. No. 10,447,128

STATOR AND MULTIPHASE BRUSHLESS MOTOR HAVING THE SAME

Johnson Electric Internat...

1. A stator comprising:a stator core having a ring portion and a plurality of stator poles extending radially from the ring portion;
a plurality of stator coils wound on the stator poles and having coil terminals;
a wiring frame fixed to the stator core, and comprising a plurality of conducting members electrically insulated from each other, the conducting elements being electrically coupled to corresponding coils terminals to form multiphase windings; and
an insulating holder coupled to the stator,
wherein at least three coil terminals of the stator coils electrically coupled to respective conducting members are directly electrically coupled to a multi-phase power supply, and
wherein the at least three coil terminals are held by the insulating holder.

US Pat. No. 10,442,122

BIO-SENSOR CIRCUIT

Johnson Electric Internat...

1. A bio-sensor circuit system for the production of bio-sensor circuits comprising:a bio-sensor production reel having an elongate substrate formed from a strip of electrically insulative material, the substrate including a plurality of index holes positioned symmetrically at or adjacent to both longitudinal sides of the substrate to enable actuation of the reel in a longitudinal direction, and a plurality of printed circuits printed in a parallel arrangement along the length of the substrate, the printed circuits each including at least one electrically conductive contact sensor;
an injection molding tool having upper and lower injection mold elements being disposed above and below upper and lower surfaces of the reel, the upper and lower injection mold elements being capable of being actuated into engagement with the reel, thereby forming a cavity about each printed circuit between the upper and lower injection mold elements, the injection molding tool further including at least one abutment element capable of engaging with a portion of the surface of the reel inside the cavity when the upper and lower injection mold elements are actuated into engagement with the reel; and
a sprocket feed roller capable of engagement with the index holes of the reel, wherein the roller is rotatable so as to effect actuation of the reel through the injection molding tool and to be spooled onwards and transferred in a reel-to-reel transferring.

US Pat. No. 10,443,688

DRIVING DEVICE HAVING MOTOR AND GEARBOX

Johnson Electric Internat...

1. A driving device comprising:a motor comprising a rotary shaft; and
a gearbox comprising:
a first sun gear coaxially fixed to the rotary shaft;
a plurality of first planetary gears surrounding and engaged with the first sun gear, meshing planes of the first sun gear and the first planetary gears being slanted with respect to the rotary shaft, each of the first planetary gears subjected to an externally-exerted first force and exerting a transverse component of force toward the rotary shaft on the first sun gear; and
a first internal gear ring surrounding and engaged with the plurality of first planetary gears,
wherein the first planetary gears are rotatably mounted to a first planetary carrier, the first planetary carrier is subjected to a second force that a first resilient member exerts toward the motor, and the first planetary carrier exerts the first force on the first planetary gears.

US Pat. No. 10,432,059

ELECTRIC ACTUATOR

JOHNSON ELECTRIC INTERNAT...

1. An electric actuator comprising:a motor comprising an outer housing accommodating a stator and a rotor therein and a rotary shaft extending from an end surface of the outer housing; and
a vibration damping gasket made from a resilient material which is attached to the motor, the vibration damping gasket comprising an annular body sleeved on the outer housing of the motor and an end wall abutting against the end surface of the outer housing from which the rotary shaft extends from, the end wall defining a through hole through which the rotary shaft extends; and wherein
the annular body of vibration damping gasket comprises an inner cylindrical surface which expands radially and tightly hoops a side surface of the outer housing, and the end wall of the vibration damping gasket comprises an inner flat surface directly contacted the end surface of the outer housing.

US Pat. No. 10,432,073

MEDICAL PUMP

JOHNSON ELECTRIC INTERNAT...

1. A medical pump comprising:a single phase synchronous motor comprising a stator and a rotor rotatable relative to the stator, the rotor comprising a plurality of permanent magnets, the stator comprising a stator core and a winding wound around the stator core,
wherein the medial pump further comprises an AC-DC conversion circuit and a bidirectional AC switch, an external AC power and the stator winding of the motor are connected in series between a first node and a second node, and the AC-DC conversion circuit and the bidirectional AC switch are connected in parallel between the first node and the second node.

US Pat. No. 10,424,980

MOTOR AND STATOR THEREOF

JOHNSON ELECTRIC INTERNAT...

1. A stator of a motor, comprising:a stator core,
a winding wound around the stator core; and
a circuit board connected with the winding, the circuit board forming a through hole, the through hole having an opening formed at an edge of the circuit board, a wire terminal of the winding sliding into the through hole via the opening, and a distal end of the wire terminal bent and soldered to a surface of the circuit board after passing through the through hole,
wherein the circuit board has a circular sector shape.

US Pat. No. 10,400,499

LIFTING DEVICE FOR VEHICLE TAILGATE AND DRIVING DEVICE THEREOF

JOHNSON ELECTRIC INTERNAT...

1. A driving device comprising:an electric motor comprising a stator and a rotor rotatable relative to the stator, the stator comprising a cylindrical housing and an endcap mounted to an end of the housing, the rotor comprising a rotating shaft, wherein a bearing is mounted to the endcap to rotatably support the rotating;
a gear train comprising a gear mechanism with at least one stage which comprises a ring gear, a sun gear, planetary gears and a carrier;
wherein the ring gear is directly engaged with the endcap which limits the position of the planetary gears of the gear train in an axial direction of the gear train.

US Pat. No. 10,404,129

ELECTRIC MOTOR

JOHNSON ELECTRIC INTERNAT...

1. A brush assembly for an electric motor, comprising a brush holder and a brush slidably mounted to the brush holder, the brush holder comprising a brush holder plate and a side portion extending from the brush holder plate, the brush being arc-shaped and comprising a first surface contacting the brush holder plate and a second surface contacting the side portion of the brush holder, wherein the side portion of the brush holder comprises a plurality of ribs contacting the second surface of the brush;wherein a through hole is formed between adjacent ribs of the side portion of the brush holder, the brush holder plate has at least two elongated projections that support the first surface of the brush and have a shape corresponding to the shape of the brush.

US Pat. No. 10,381,907

PUMP AND ELECTRIC MOTOR

JOHNSON ELECTRIC INTERNAT...

1. A motor comprising a stator and a rotor rotatable relative to the stator, wherein the stator comprises a magnetic core and a winding wound around the magnetic core, the magnetic core is mounted to a base body, the base body has at least one recess adjoining the magnetic core for receiving debris produced by mutual friction between the magnetic core and the base body, the base body has a sleeve receiving the rotor, the magnetic core comprises a pair of pole shoes, inner wall surfaces of the pair of pole shoes are recessed to form pole are surfaces surrounding the sleeve, the pole arc surfaces of the pole shoes lay on an outer wall surface of the sleeve, a slot is defined between pole tips of the pair of pole shoes, and the sleeve has an axially-extending rib which is slidably inserted into the slot between the pole tips of the pole shoes to guide an axial movement of the sleeve relative to the magnetic core, wherein the base body has a step projecting radially outwardly from an outer wall surface of the sleeve with an axial end surface of the step contacting the magnetic core, the at least one recess is defined in the step, and the at least one recess and the magnetic core are disposed at two sides of the axial end surface.

US Pat. No. 10,367,396

FUSE COMPONENT AND ELECTRIC MOTOR INCORPORATING THE SAME

JOHNSON ELECTRIC INTERNAT...

1. A fuse component for an electric motor, comprising:an outer shell made of an insulating material and having two open ends;
a spiral fuse, disposed at least partially in said outer shell; and
two end pieces, each end piece comprises a plug portion fitted into a corresponding open end of the outer shell,
wherein at least one end piece further comprises an end portion integrated with the plug portion and made from conductive material, and a through hole passes through the plug portion and the end portion, and
wherein the end portion has a smaller cross section than the plug portion and extends to an outside the outer shell, at least one terminal of the spiral fuse extends into the end portion via the through hole, and the at least one terminal of the spiral fuse is configured to be connected to a circuit of the electric motor by at least welding the end portion to the circuit, and
wherein the plug portion has an end wall and a substantially cylindrical side wall, the end wall extends radially outwards from one end of the end portion, and the side wall extends substantially axially from the end wall towards the other end of the end portion and surrounds a part of the end portion.

US Pat. No. 10,340,758

PERMANENT MAGNET MOTOR

JOHNSON ELECTRIC INTERNAT...

1. A permanent magnet for a pole of a motor, comprising an outer surface and an inner surface, the outer surface is an arc surface with a convex middle, and the inner surface is a curved surface with a concave middle,wherein the curved surface comprises an arc surface section and two planar surface sections, the arc surface section is connected between the two planar surface sections to form the whole curved surface, the arc of the inner surface of the permanent magnet and the arc of the outer surface of the permanent magnet are concentric, a ratio of an arc angle ? of the arc surface section of the inner surface to an arc angle ? of the outer surface of the permanent magnet is in the range of 0.15 to 0.35.

US Pat. No. 10,333,369

MOTOR DRIVING ASSEMBLY AND TORQUE TRANSMISSION MECHANISM

JOHNSON ELECTRIC INTERNAT...

1. A motor driving assembly comprising:a single phase motor; and
a torque transmission mechanism comprising a driving member for being driven by the motor, a driven member for driving a load to rotate along a predetermined direction, and a connecting device comprising a resilient member which is in the shape of a spiral spring and a damping member, the resilient member comprising one end connected to the driving member and the other end connected to the driven member, the damping member being coated on an outer surface of the resilient member, or filled in a void of the resilient member in order to reduce noise generated by the resilient member;
wherein the driving member and the driven member are cooperative to form a receiving space therebetween, and an elastic pad is disposed on an axial side of the resilient member which is received in the receiving space.

US Pat. No. 10,333,223

FLEXIBLE RFID ANTENNA

JOHNSON ELECTRIC INTERNAT...

1. A flexible RFID antenna, comprising:a single-sided flexible substrate having a first end and a second end;
a plurality of conductors arranged on the substrate, wherein the plurality of conductors are insulated from each other and extend between the first end and the second end of the substrate; and
a flexible covering layer attached to the substrate with the conductors sandwiched between the substrate and the flexible covering layer;
a double-sided connector comprising a connector body provided with a plurality of upper conductive pins and a plurality of lower conductive pins; the plurality of upper conductive pins are respectively in communication with ends of the conductors at the first end of the substrate, the plurality of lower conductive pins are respectively in communication with ends of conductors at the second end of the substrate, the plurality of upper conductive pins are respectively directly connected with the plurality of lower conductive pins inside the double-sided connector;
wherein ends of the conductors at the first end of the substrate and ends of the conductors at the second end of the substrate are inserted into the double-sided connector to form an electrical connection, respectively, to form a helical RFID coil.

US Pat. No. 10,302,098

HEATING PUMP

JOHNSON ELECTRIC INTERNAT...

1. A heating pump comprising:a pump housing having an inlet, an outlet, a cylindrical sidewall, and a top plate sealingly fixed to an axial opening of the sidewall, the top plate is made of metal;
a heater fixed to the pump housing, the heater comprises connecting heads and a main body connected between the connecting heads;
an impeller received in the pump housing; and
a motor fixed to the pump housing for rotating the impeller,
wherein the heater extends through and is fixed to the top plate, the connecting heads extend to an exterior of the pump housing, and the main body of the heater is formed as an arc, is located in an interior of the pump housing and is in contact with the top plate, a cross section of the main body is in the shape of a chamfered rectangle and has four outer surfaces, and one of the outer surfaces is in intimate contact with the top plate, and wherein the main body is soldered to the top plate, and wherein the pump body further comprises an outer cover mounted to a side of the top plate remote from the motor.

US Pat. No. 10,299,559

SINGLE PHASE PERMANENT MAGNET MOTOR AND HAIR DRYER USING THE SAME

JOHNSON ELECTRIC INTERNAT...

1. A single phase motor comprisinga stator comprising:
a stator core comprising an outer ring portion and a plurality of teeth extending inwardly from the outer ring portion; and
a stator winding wound around the stator core; and
a rotor rotatable relative to the stator, the rotor comprising a plurality of rotor magnetic poles;
wherein each tooth of the stator comprises a tooth body extending inwardly from the outer ring portion and two pole shoes extending respectively from a distal end of the tooth body in two opposite circumferential directions of the rotor and facing the rotor, and the two pole shoes are asymmetrical about a center line of the tooth body such that when the stator winding is not energized the rotor is capable of stopping at an initial position where a center line of each rotor magnetic pole deviates from the center line of a corresponding tooth body.

US Pat. No. 10,294,951

SHAFT SLEEVE HAVING A BEARING AND A RESILIENT MEMBER FORMED WITH PROTRUSIONS AND GROOVES

JOHNSON ELECTRIC INTERNAT...

1. A shaft sleeve unit comprising:a fixing member,
a bearing received in the fixing member, and
a resilient buffering member disposed between the fixing member and the bearing;
wherein a first groove-protrusion structure is formed between a radial inner surface of the fixing member and a radial outer surface of the resilient buffering member, a second groove-protrusion structure is formed between a radial outer surface of the bearing and a radial inner surface of the resilient buffering member, a radial thickness of the resilient buffering member between the first groove-protrusion structure and the second groove-protrusion structure is not greater than a radial distance between the radial outer surface of the bearing and the radial inner surface of the fixing member;
wherein the first groove-protrusion structure comprises the radial outer surface of the buffering member recessed inwardly to form an annular groove and the radial inner surface of the fixing member projecting outwardly to form an annular protrusion, the annular protrusion of the fixing member is engaged in the annular groove of the buffering member;
wherein second groove-protrusion structure comprises the radial outer surface of the bearing projecting outwardly to form an annular protrusion and the radial inner surface of the buffering member recessed inwardly to form an annular groove, the annular protrusion of the bearing is engaged in the annular groove of the buffering member;
wherein the annular groove of the radial inner surface of the buffering member and the annular groove of the radial outer surface of the buffering member correspond to each other in position.

US Pat. No. 10,294,959

SYNCHRONOUS MOTOR, MOTOR STATOR, PUMP AND CLEANING APPARATUS

JOHNSON ELECTRIC INTERNAT...

7. A motor stator comprising a stator core and two stator windings wound around the stator core, wherein the stator core comprises two opposing poles and a yoke connected between the poles, the yoke comprises a bottom and two branches extending from the bottom, the two stator windings are respectively wound around two insulating brackets that are attached around the two branches; wherein the two stator windings are respectively formed by winding two separate electric wires, each electric wire has a first terminal and a second terminal, the two first terminals of the two stator windings are disposed at inner layers of the stator windings, and the two second terminals are disposed at outer layers of the stator windings, and wherein the two insulating brackets each form a zig-zagged wire guiding slot on an end wall of the insulating bracket, each zig-zagged wire guiding slot comprises a first wire-guiding slot, a second wire-guiding slot and a third wire-guiding slot defined in a same surface of the end wall of the insulating bracket which is parallel with a longitudinal direction of the insulating bracket, the second wire-guiding slot is connected between and transverse to the first and third wire-guiding slots so as to be disposed parallel to the longitudinal direction of the insulating bracket, and two internal wire guiding corners respectively connect the first wire-guiding slot to the second wire-guiding slot and connect the second wire-guiding slot to the third wire-guiding slot, the two first terminals of the two stator windings are routed from an outside of the brackets through the first, second and third wire-guiding slots of the zig-zagged wire guiding slots to a winding space at an inside of the brackets, the zig-zagged wire guiding slots are capable of positioning the first terminals.

US Pat. No. 10,295,371

ELECTRONIC DEVICE AND MAGNETIC SENSOR INTEGRATED CIRCUIT

JOHNSON ELECTRIC INTERNAT...

1. A magnetic sensor integrated circuit, comprising a shell, a semiconductor substrate installed in the shell, and a first to a third port extending from the shell, wherein the semiconductor substrate is provided with:a rectifier directly powered by a direct current power supply and comprising a first output terminal, a second output terminal and two input terminals respectively connected to the first port and the second port, wherein in a case that the first port and the second port are positively or negatively connected to the direct current power supply, a voltage output by the first output terminal of the rectifier is higher than the voltage output by the second output terminal of the rectifier; and
a position sensor configured to detect a magnetic field, wherein the position sensor is connected to the first output terminal and the second output terminal of the rectifier, and a magnetic field signal detected by the position sensor is output via the third port; and
an output control circuit comprising a first resistor, a NPN triode, a second resistor and a diode, the second resistor and the diode are connected in series between the output terminal of the position sensor and the third port, a cathode of the diode is connected to the output terminal of the position sensor, one end of the first resistor is connected to the first output terminal of the rectifier, and another end is connected to the output terminal of the position sensor, a base of the NPN triode is connected to the output terminal of the position sensor, an emitter of the NPN triode is connected to an anode of the diode, and a collector of the NPN triode is connected to the first output terminal of the rectifier.

US Pat. No. 10,291,087

ELECTRIC MOTOR

JOHNSON ELECTRIC INTERNAT...

1. An electric motor comprising:a stator; and
a rotor rotatable relative to the stator,
wherein the stator comprises a stator core, stator windings wound around the stator core, and a winding bracket for insulating the stator core from the stator windings,
wherein the rotor comprises an outer housing and a plurality of permanent magnet poles fixed to an inner surface of the outer housing and surrounding an outer side of the stator core and stator windings,
wherein the stator core comprises an outer annular portion, an inner annular portion, a plurality of tooth portions extending radially outwardly from the outer annular portion, a plurality of connecting arms interconnecting the outer annular portion and the inner annular portion, and a tip disposed at a distal end of each tooth portion, each of the connecting arms starts outwardly from the inner annular portion and ends at the outer annular portion, a width of the connecting arm in a circumferential direction of the motor is less than a width of the tooth portion in the circumferential direction, ventilation slots are defined between adjacent ones of the connecting arms, the ventilation slots and the connecting arms disposed alternately in the circumferential direction, and
wherein the width of each tooth portion is defined as T3, a height of each tooth portion is defined as L1, a circumferential distance between roots of adjacent tooth portions is defined as L3, the ratio of L1 to L3 is in the range of 1.0 to 1.3, and the ratio of T3 to L3 is in the range of 0.8 to 1.0.

US Pat. No. 10,280,676

VEHICLE WINDOW LIFT CONTROL SYSTEM AND CONTROL METHOD

JOHNSON ELECTRIC INTERNAT...

1. A vehicle window lift control system for controlling lifting up or lowering down of a vehicle window, the vehicle window lift control system comprising:a window lift motor which is a brushless direct current motor;
an inverter;
a rotor position sensing unit;
a motor drive/control module configured to drive the inverter to enable an operation of the window lift motor based on a rotor position feedback signal obtained by the rotor position sensing unit; and
an anti-pinch module comprising:
a pulse counter configured to record the number of pulses generated by the rotor position sensing unit during lifting up of the vehicle window;
a count comparator configured to compare the recorded number of the pulses against a preset threshold to determine whether or not the vehicle window is in an anti-pinch area;
an obstacle judgment unit configured to be initiated when it is determined that the vehicle window is in the anti-pinch area; and
an anti-pinch instruction unit configured to send an anti-pinch instruction to the motor drive/control module when the obstacle judgment unit determines that there is an obstacle, and the motor drive/control module configured to drive the inverter according to the anti-pinch instruction to make the window lift motor rotate reversely.

US Pat. No. 10,284,064

BRUSHLESS DIRECT CURRENT MOTOR AND ROTOR THREAD THEREOF HAVING FIXING PINS

JOHNSON ELECTRIC INTERNAT...

1. A rotor of a motor, comprising:a shaft;
a first end plate comprising a first main body and a plurality of first pins perpendicular to the first main body;
a second end plate comprising a second main body and a plurality of second pins perpendicular to the second main body;
a plurality of cores arranged between the first and second end plates, the cores being evenly spaced from each other in a circumferential direction, a space being defined between adjacent cores, each of the cores defining a through hole with one of the first pins and one of the second pins inserted therein, a sum of the lengths of the first and second pins in the same through hole being not larger than the length of the through hole; and
a plurality of magnets, each of the magnets being received in a respective space between the cores;
wherein the first pins comprise a plurality of first long pins and a plurality of first short pins, the second pins comprise a plurality of second long pins and a plurality of second short pins, each first long pin and a corresponding second short pin are in the same through hole, each first short pin and a corresponding second long pin are in the same through hole, a gap is defined between the first short pin and corresponding second low pin, and a gap is defined between the first long pin and corresponding second short pin.

US Pat. No. 10,250,090

ROTOR, MOTOR, PUMP AND CLEANING APPARATUS

JOHNSON ELECTRIC INTERNAT...

1. A synchronous motor comprising a stator and a permanent magnetic rotor rotatable relative to the stator, wherein the rotor comprises a rotary shaft and two magnets fixed to the rotary shaft, each magnet covers a half of the circumference of the rotary shaft along a circumferential direction and comprises a radial outer surface, a radial inner surface, and two connecting surfaces that connect the radial outer surface and the radial inner surface at opposite ends of the magnet, the radial outer surface has an arc section, the radial inner surfaces of the two magnets cooperatively form an annular surface which defines an inner bore for the rotary shaft to pass therethrough; the stator comprises a stator core and stator windings wound around the stator core the stator core comprises a pair of opposing poles and a yoke connected between the poles, each pole has a pole arc surface facing the rotor, with an air gap formed between the pole arc surface and the rotor, a ratio of a pole arc angle of each magnet to a 180-degree angle is in the range of 0.75 to 0.94, wherein the pole arc angle of each magnet is an angle formed by hypothetical lines connecting two circumferential ends of the arc section of the radial outer section of the magnet and a central axis of the rotary shaft, and wherein the connecting surfaces of one of the magnets contact the connecting surfaces of the other one of the magnets, the radial outer surface of each magnet further includes two plane sections extending respectively from the two circumferential ends of the arc section to the connecting surfaces, two plane sections of the radial outer surfaces of the two magnets at a same circumferential end are coplanar.

US Pat. No. 10,243,438

SINGLE-PHASE OUTER-ROTOR MOTOR AND ROTOR THEREOF

JOHNSON ELECTRIC INTERNAT...

1. A single-phase outer-rotor motor, comprising:a stator comprising a stator core and windings wound around the stator core, the stator core includes a yoke and a plurality of teeth extending outwardly from an outer edge of the yoke, each of the teeth comprising a tooth body connected with the yoke and a tooth tip formed at a distal end of the tooth body, the windings are wound around the tooth bodies; and
a rotor surrounding the stator, wherein the rotor comprises:
a housing; and
at least one permanent magnet attached to an inside of the housing, the at least one permanent magnet being a closed ring in a circumferential direction which includes a plurality of sections along the circumferential direction, each section forming a magnetic pole, a distance between an inner surface of each section of the permanent magnet and a central axis of the rotor progressively decreasing from two circumferential sides toward a center of the inner surface,
wherein inner surfaces of the magnetic poles of the rotor and outer surfaces of the tooth tips of the stator define therebetween an uneven gap,
the number of the magnetic poles of the rotor is equal to the number of the teeth of the stator,
a slot opening is formed between each two adjacent tooth tips, and
a width of the slot opening in a circumferential direction is equal to or greater than a minimum gap between the stator and the rotor, but less than or equal to five times the minimum gap between the stator and the rotor.

US Pat. No. 10,243,439

SINGLE-PHASE OUTER-ROTOR MOTOR AND STATOR THEREOF

JOHNSON ELECTRIC INTERNAT...

1. A stator for a single-phase outer-rotor motor, comprising a stator core, the stator core including:a yoke; and
a plurality of teeth extending outwardly from an outer edge of the yoke, each of the teeth including:
a tooth body connected with the yoke, a winding slot formed between each two adjacent tooth bodies; and
a tooth tip formed at a distal end of the tooth body, a slot opening formed between each two adjacent tooth tips, the tooth tip having a width in a circumferential direction greater than that of the tooth body and thus protruding beyond the tooth body in the circumferential direction, inner surfaces of at least part of the tooth tips facing the stator being formed with cutting grooves such that a portion of the tooth tip outside the cutting groove is capable of being tilted outwardly to enlarge the slot opening and deformed inwardly to narrow the slot opening;
wherein the tooth tips of a half of the plurality of the teeth are formed with the cutting grooves, the tooth tips of the other half of the plurality of the teeth are not formed with the cutting grooves, and the tooth tips with the cutting grooves and the tooth tips without the cutting grooves are spacingly and alternatively arranged in the circumferential direction.

US Pat. No. 10,236,758

SINGLE PHASE PERMANENT MAGNET MOTOR AND STATOR CORE THEREOF

JOHNSON ELECTRIC INTERNAT...

1. A stator core comprising:an end portion; and
a pole arm extending from the end portion, the pole arm comprising two spaced connecting arms and two pole claws respectively formed at distal ends of the connecting arms, the two pole claws defining a space for receiving a rotor therein, the pole claws surrounding the space and forming an arc pole surface, the arc pole surface forming a discontinuity opening along a circumferential direction, the discontinuity opening facing a spacing between the connecting arms and having a width changed along an axial direction, wherein a minimum width of the discontinuity opening is greater than zero.

US Pat. No. 10,544,787

PUMP DEVICE

JOHNSON ELECTRIC INTERNAT...

1. A pump device comprising:a casing comprising a pump chamber, and an inlet and an outlet in communication with the pump chamber;
an impeller accommodated in the pump chamber;
a motor connected to the casing for driving the impeller to rotate and comprising a rotor chamber for receiving a rotor; and
a base disposed between the impeller and the motor, wherein the base is provided with an accommodating groove, and an inlet port is defined in the accommodating groove in communication with the rotor chamber to allow fluid in the pump chamber to enter into the rotor chamber,
wherein the base comprises a base body and a first fitting portion protruding from a side of the base body away from the impeller, the first fitting portion is accommodated in the rotor chamber, and a gap is defined between the first fitting portion and a sidewall of the rotor chamber, to allow the fluid to enter into the rotor chamber, a flow inlet is defined in an end of the sidewall of the rotor chamber adjacent the impeller, the gap is defined between the first fitting portion and a bottom portion of the flow inlet, a step is formed on the sidewall of the rotor chamber adjacent the first fitting portion and below the flow inlet, the first fitting portion comprises a lateral side surface facing the sidewall of the rotor chamber, an end surface facing the step, and a connecting surface connected between the lateral side surface and the end surface, the gap comprises a first gap defined between the first fitting portion and the bottom portion of the flow inlet, and a second gap defined between the end surface and the step.

US Pat. No. 10,536,054

MOUNTING STRUCTURE AND GEAR MOTOR COMPRISING SAME

Johnson Electric Internat...

1. A mounting structure for use in a gear motor comprising a motor and a gearbox connected to the motor, the mounting structure configured to mount one component of the gearbox to another component of the gear motor, wherein the mounting structure comprises:at least one first hole formed in said one component;
at least one second hole formed in said another component, the second hole and the first hole being coaxially arranged, the second hole having a diameter being greater or less than that of the first hole; and
at least one deformable expansion member engaged in the first hole and the second hole,
wherein the deformation of the expansion member in one of the first hole and the second hole is greater than that in the other of the first hole and the second hole, and
wherein the expansion member is interference fit with both of the first and second holes, the expansion member engaging with said one of the first and second holes more firmly than with said the other of the first and second holes.

US Pat. No. 10,530,199

SINGLE PHASE PERMANENT MAGNET MOTOR AND STATOR CORE THEREOF

JOHNSON ELECTRIC INTERNAT...

1. A stator core comprising:an end portion; and
two spaced arm portions extending from the end portion, each arm portion comprising a connecting arm connected to the end portion and a pole claw formed at a distal end of the connecting arm, the two pole claws defining a space for receiving a rotor, each pole claw having a pole surface, and forming a long pole tip and a short pole tip, the long pole tip of each pole claw corresponding to the short pole tip of the other pole claw with a slot opening formed there between, and the pole surface being recessed inwardly to form at least one startup groove, outer surfaces of the long pole tips and the short pole tips being parallel with the end portion, a line connecting the two slot openings passing through a center of a rotor, and the line being not perpendicular to out surfaces of the long pole tips and the short pole tips.

US Pat. No. 10,504,665

SWITCH

JOHNSON ELECTRIC INTERNAT...

1. A switch comprising:a switch housing having a receiving space;
a conductive fixed contact element and a conductive active contact element which are provided in the receiving space and being electrically connected to two terminals of the switch respectively;
an actuating member reciprocating movable in a predetermined actuating direction between a rest position and an actuated position; and
a conductive spring contact element movable with the actuating element, the spring contact element being in constant contact with the fixed contact element and switched between a state of being in contact with a conductive contact surface of the active contact element and a state of being disconnecting with the conductive contact surface of the active contact element, wherein the actuating element is moved back from the actuated position to the rest position due to spring force of the spring contact element;
wherein a resistor is connected in series between the spring contact element and the fixed contact element or between the spring contact element and the active contact element, the resistor being correspondingly assembled on the fixed contact element or the active contact element.

US Pat. No. 10,505,434

MOTOR AND APPLICATION APPARATUS UTILIZING THE SAME

JOHNSON ELECTRIC INTERNAT...

1. A motor, comprising:a stator comprising a stator core and a stator winding wound on the stator core;
a rotor,
a magnetic sensor, configured to detect a magnetic field polarity of the rotor and output a corresponding signal; and
a motor driving circuit, configured to drive the rotor to rotate with respect to the stator based on the signal output from the magnetic sensor;
wherein, at a rest position of the rotor, the magnetic sensor is arranged with an advance angle with respect to a polar axis of the rotor;
the motor driving circuit comprises a controllable bidirectional AC switch and a switch control circuit, the controllable bidirectional AC switch and the stator winding being connected in series between two terminals of a AC power supply; and
the switch control circuit is configured to turn on the controllable bidirectional AC switch in a case that the AC power supply is in a positive half-cycle and the magnetic sensor detects that the magnetic field of the rotor has a first polarity, or in a case that the AC power supply is in a negative half-cycle and the magnetic sensor detects that the magnetic field of the rotor has a second polarity opposite to the first polarity; and turn off the controllable bidirectional AC switch in a case that the AC power supply is in a negative half-cycle and the magnetic sensor detects that the magnetic field of the rotor has the first polarity, or in a case that the AC power supply is in a positive half-cycle and the magnetic sensor detects that the magnetic field of the rotor has the second polarity.

US Pat. No. 10,502,323

SHUT-OFF VALVE FOR INTEGRATION INTO A GAS METER

JOHNSON ELECTRIC INTERNAT...

1. A method of operating a shut-off valve comprising:providing the valve for integration in a gas meter, comprising:
a shut-off body which is movable longitudinally relative to a valve seat by a motor-driven reduction transmission with an integrated nut-threaded spindle drive;
wherein the shut-off body is movable by the motor-driven reduction transmission and remains in one of an open valve position, a closed, tensioned valve position, and a closed, relaxed valve position;
wherein when switching the valve to a closed position, the shut-off body initially is moved to the closed, tensioned valve position where the shut-off body is compressed against the valve seat for maintaining a gas-tightness from an open valve position, and subsequently is moved to the closed, relaxed valve position where the shut-off body is relaxed by moving back while maintaining a gas-tightness by the motor-driven reduction transmission;
wherein in a motion direction of the shut-off body, a distance between the shut-off body and the valve seat at the closed, relaxed valve position, is greater that a distance between the shut-off body and the valve seat at the closed, tensioned valve position.

US Pat. No. 10,491,080

BRUSH ASSEMBLY

JOHNSON ELECTRIC INTERNAT...

1. A brush assembly for a brush motor, comprising:a support member,
brush holders disposed on the support member,
at least two first brushes and at least two second brushes respectively mounted to the brush holders,
a first motor terminal and a second motor terminal for two adjacent brushes connecting with an external power supply,
a first filter circuit connected to the first motor terminal,
a second filter circuit connected to the second motor terminal,
wherein the first motor terminal, the second motor terminal, the first filter circuit and the second filter circuit are mounted in a region defined by two adjacent brushes of said brushes, and said two adjacent brushes form an angle greater than 60 degrees but less than 180 degrees,
wherein the at least two first brushes have the same polarity, the at least two second brushes have the same polarity opposite to the first brushes, and said two adjacent brushes defined the region have the same polarity.

US Pat. No. 10,483,829

BRUSH ASSEMBLY AND MOTOR USING SAME

Johnson Electric Internat...

1. A motor comprising:a housing,
a rotor assembly mounted in the housing,
a stator assembly mounted in the housing,
a commutator,
an end cap assembly mounted to one side of the housing; and
a brush assembly comprising:
a circuit board;
at least two brushes;
a plurality of power connecting terminals for connecting with an external power supply;
a power supply branch circuit connected in series between a corresponding one of the power connecting terminals and a corresponding one of the brushes; and
an EMI suppressor connected between the power supply branch circuit and ground, the EMI suppressor being an axial capacitor formed by a conductor core, a cover, and a filling medium;
wherein the end cap assembly comprises an end cap portion and a bearing seat, the end cap portion defines a first receiving chamber and a second receiving chamber at two sides thereof, and defines a through hole in communication with the first receiving chamber and the second receiving chamber, a bearing seat accommodating portion is defined in the first receiving chamber, the bearing seat comprises a plate member and a bearing sleeve disposed on the plate member, the plate member is disposed between the first receiving chamber and a bottom wall of the second receiving chamber, and the bearing sleeve is accommodated in the bearing seat accommodating portion.

US Pat. No. 10,468,940

MOTOR AND STATOR THEREOF

Johnson Electric Internat...

1. A stator comprising:a stator core;
a winding wound around the stator core;
a winding bracket disposed between the stator core and the winding, the winding bracket comprising a first bracket and a second bracket arranged in parallel with each other;
an electronic circuit; and
a first connecting terminal and a second connecting terminal for supplying power to the winding and the electronic circuit from an external power source, the first and second connecting terminals both mounted on one of the first bracket and the second bracket; wherein the electronic circuit and the winding are connected in series between the first connecting terminal and the second connecting terminal, and wherein the stator further comprises a connecting member disposed on the winding bracket, the connecting member is separately formed and electrically connects the winding to the electronic circuit, the electronic circuit comprises a circuit board, and the circuit board is supported by the connecting member and the first connecting terminal.

US Pat. No. 10,458,532

INTERNAL RING GEAR, DRIVING ASSEMBLY AND APPLICATION DEVICE

JOHNSON ELECTRIC INTERNAT...

1. An internal ring gear comprising:a housing; and
at least two internal ring gears integrally arranged at an inner surface of the housing, wherein the outer surface of the housing is smooth, and a diameter of the outer surface of the housing is consistent; the housing and the internal ring gears being a one piece monolithic integral unit made of powder metal material.

US Pat. No. 10,424,986

ACTUATOR

Johnson Electric Internat...

1. An actuator, comprising:a housing;
an output driven by a gear train;
a motor driving the output via the gear train;
a PCB connected to the motor for supplying power to the motor; and
lead wires connected to the PCB via a direct connection connector to supply power to the PCB and/or carry signals,
wherein the connection between the lead wires and the PCB is solder free.

US Pat. No. 10,424,997

MOTOR AND ROTARY ASSEMBLY THEREOF

JOHNSON ELECTRIC INTERNAT...

1. A motor comprising:a rotary assembly comprising:
a rotary shaft;
a retainer rotating along with the rotary shaft; and
a rotor magnet retained by the retainer; and
a stationary assembly supporting the rotary assembly,
wherein the retainer comprises a first lateral surface, the rotor magnet comprises a second lateral surface facing the first lateral surface of the retainer, one of the first lateral surface and second lateral surface is of a conical surface, and the other one of the first lateral surface and second lateral surface is of a circular cylindrical surface, a portion of the second lateral surface engages with a portion of the first lateral surface via interference fit, and a gap is defined between another portion of the second lateral surface and another portion of the first lateral surface.

US Pat. No. 10,424,998

ROTOR AND MOTOR, POWER TOOL COMPRISING THE ROTOR

JOHNSON ELECTRIC INTERNAT...

1. A rotor comprising:a magnet yoke defining a plurality of accommodating slots therein;
an elastic member protruding from the magnet yoke towards each of the accommodating slots; and
a plurality of permanent magnets each inserted in one of the accommodating slots, and the elastic member bent and abutting against each of the plurality of permanent magnets.

US Pat. No. 10,415,566

GEAR PUMP

JOHNSON ELECTRIC INTERNAT...

1. A gear pump comprising:a pump cylinder, comprising:
a driving gear; and
a driven gear, the driving gear and the driving gear being meshed with each other and disposed in the pump cylinder;
a driving shaft, rotatably supported by the pump cylinder, and the driving gear being mounted to or integrally formed with the driving shaft; and
a motor, comprising:
a rotor attach to the driving shaft;
a stator surrounding the rotor; and
a sealing member disposed between the rotor and the stator, a gap being formed between the sealing member and the rotor to allow the rotor to rotate,
wherein the sealing member is a cylindrical structure with an open end and an opposite closed end, an end of the pump cylinder is inserted into the open end of the sealing member to contact an inner surface of the sealing member, and the open end of the sealing member is connected with the pump cylinder to prevent a leakage of a fluid in the gear pump,
wherein the driving shaft and the rotor are rotatable along with each other,
wherein the driving shaft and the rotor are engaged to permit a relative movement in an axial direction without permitting a relative movement in a circumferential direction after the driving shaft is assembled to the rotor,
wherein the end of the pump cylinder has an annular flange axially protrudes therefrom, and the annular flange is inserted into the open end of the sealing member to contact the inner surface of the sealing member,
wherein the end of the pump cylinder facing the motor further comprises at least one baffle block which extends radially inwardly from the annular flange and axially to form a gap between the baffle block and the rotor, and the fluid rotating along with the rotor impinges on the at least one baffle block to form turbulence in the fluid, and
wherein two baffle blocks are symmetrically disposed with respect to the driving shaft, and a radial distance between the at least one baffle block and the driving shaft gradually increases in a direction away from the pump cylinder.

US Pat. No. 10,418,919

ELECTRIC TOOL AND MOTOR DRIVE SYSTEM

Johnson Electric Internat...

1. A motor drive system comprising:an inverter coupled to a power supply comprising a plurality of semiconductor switch elements and configured to convert a voltage provided by the power supply into alternating current power to power an electric motor;
a motor drive control circuit configured to output a drive signal to control a power mode of the semiconductor switch elements in the inverter;
a trigger switch;
a first electronic switch connected between the power supply and the motor drive control circuit, when the first electronic switch is turned on, the power supply supplies power to the motor drive control circuit to drive the electric motor; and
a switch control circuit comprising a second electronic switch, a control terminal of the second electronic switch coupled to the trigger switch and a first terminal of the second electronic switch coupled to a control terminal of the first electronic switch, the switch control circuit configured to turn on or turn off the first electronic switch based on a state of the trigger switch.

US Pat. No. 10,415,590

ELECTRIC COOLANT PUMP

JOHNSON ELECTRIC INTERNAT...

1. An electric coolant pump comprising:an outer housing comprising a first housing portion, a second housing portion, and a partition plate integrally formed, the partition plate disposed between the first housing portion and the second housing portion, wherein the first housing portion and the second housing portion are undetachably and air-tightly connected to each other without any sealing member interposed between the first housing portion and the second housing portion;
a motor received in the first housing portion, and comprising a sealing sleeve, a stator disposed on an inner wall of the first housing portion, and a rotor rotatably received in the sealing sleeve;
an impeller driven by the rotor of the motor, and
an electrical control unit received in the second housing portion and electrically connected to the motor;
wherein a plurality of ribs are formed on an inner surface of the sealing sleeve, adjacent ribs are spaced from each other with pathways defined there between;
wherein the plurality of ribs comprises at least one group of guide-in ribs and at least one group of guide-out ribs, the guide-in ribs and the guide-out ribs extend inclined with respect to an axial direction of the sealing sleeve, the inclined direction of the guide-in ribs is different from the inclined direction of the guide-out ribs.

US Pat. No. 10,418,877

ENDCAP ASSEMBLY FOR AN ELECTRIC MOTOR AND STATOR COMPRISING SAME

JOHNSON ELECTRIC INTERNAT...

1. An endcap assembly for an electric motor comprising:an endcap defining a first accommodating groove therein;
a first wire received in the first accommodating groove; and
two terminals corresponding to the first wire, fixed to the endcap and configured to connect with corresponding windings of the electric motor;
wherein the first accommodating groove extends from one of the two terminals to the other of the two terminals, and two ends of the first wire are electrically connected to the two terminals corresponding to the first wire, respectively;
wherein the endcap assembly further comprises a second wire and two terminals corresponding to the second wire and configured to connect with corresponding windings of the electric motor, the endcap defines a second accommodating groove therein, the second wire is received in the second accommodating groove, and two ends of the second wire are electrically connected to the two terminals corresponding to the second wire, respectively; and
wherein the second accommodating groove communicates with and crosses the first accommodating groove, and the endcap assembly includes a separating portion for electrically insulating the first wire from the second wire.

US Pat. No. 10,418,883

COVER ASSEMBLY AND MOTOR

JOHNSON ELECTRIC INTERNAT...

1. A cover assembly for a motor, comprising:a mounting portion comprising a first opening passing through the mounting portion;
a flow guide portion overlapped with the mounting portion and comprising a top wall disposed at one end thereof and away from the mounting portion, a central area of the fluid guide portion defining a second opening extending to the top wall in the axial direction of the motor, the first opening and the second opening being in flow communication with each other; and
the flow guide portion further comprising a flow passage, the flow passage comprising an inner inlet in flow communication with the second opening and an outer outlet;
wherein the flow guide portion comprises a bottom wall and an annular wall, the annular wall extends spirally outwardly from its starting end to its terminating end, an angle of the annular wall extended over in a radial plane of the flow guide portion is greater than 545 degrees and less than 715 degrees.

US Pat. No. 10,410,809

ELECTRIC SWITCH

JOHNSON ELECTRIC INTERNAT...

1. An electric switch applied in an electric appliance having an electric motor, the electric switch comprising:a circuit board located in a switch housing of the electric switch, a switch path and a potentiometer track arranged on same surface of the circuit board;
a first sliding contact configured to contact the switch path to switch a contact system; and
a second sliding contact configured to contact the potentiometer track for setting the rotational speed and/or the torque of the electric motor;
wherein the first sliding contact and the second sliding contact are moving in synchronism.

US Pat. No. 10,408,362

FLOW CONTROL VALVE

JOHNSON ELECTRIC INTERNAT...

1. A flow control valve comprising:a valve body defining a bore and a plurality of fluid ports in communication with the bore;
a valve spool axially slidably disposed in the valve body, the valve spool comprises a first end and a second end, the first end of the valve spool urges an end of the valve body through a resilient member, a solid end portion of the second end of the valve spool having a convex curved surface; and
a linear actuator disposed at one end of the valve body, the linear actuator comprising an armature slidable along an axial direction of the valve spool, the armature comprising a head portion having a convex curved surface, the convex curved surface of the head portion of the armature configured to abut against the convex curved surface of the end portion of the valve spool; the valve body comprises a first end opposite from the linear actuator and a second end fixedly connected to the linear actuator, and the plurality of fluid ports comprises a fluid inlet, a work port, and a backflow port sequentially arranged on the valve body from the second end to the first end thereof; the valve body further comprises an end cap at the first end of the valve body; and the backflow port is located at an axial end portion of the valve body and formed in the end cap; the valve spool is formed with a first protruding ring and a second protruding ring; the first protruding ring having a maximum outer diameter greater than that of the second protruding ring, and a smaller-diameter portion between the first protruding ring and the second protruding ring and the inner surface of the valve body cooperatively define a flow passage; a circumferential surface of the armature is formed with a plurality of grooves that each extends from the head portion to a tail portion of the armature along an axial direction of the armature.

US Pat. No. 10,404,109

SINGLE PHASE PERMANENT MAGNET MOTOR AND STATOR CORE

JOHNSON ELECTRIC INTERNAT...

1. A stator core comprising:an end portion;
a first pole arm comprising at least a first lamination having two first connecting arms extending from the end portion and spaced from each other, and two first pole claws respectively formed at ends of the first connecting arms, the first pole claws being spaced from each other with an opening formed there between; and
a second pole arm comprising a second lamination stack consisting of more than one lamination stacked axially below said at least first lamination two second connecting arms axially stacked to the two first connecting arms respectively and two second pole claws respectively formed at distal ends of the two second connecting arms, the two second connecting claws being connected with each other said stator core being devoid of any other lamination.

US Pat. No. 10,404,147

STATOR, SINGLE PHASE MOTOR AND FAN

JOHNSON ELECTRIC INTERNAT...

1. A stator comprising:a stator core including stator poles and a yoke connecting the stator poles;
at least one winding wound around the stator core;
a winding bracket arranged between the stator core and the at least one winding, at least one support portion arranged at one end of the winding bracket adjacent the stator poles; and
a circuit board fixed to the winding bracket and supported by the at least one support portion,
wherein the winding bracket supports the circuit board only at one end of the winding bracket adjacent the stator poles.

US Pat. No. 10,403,457

ACTUATING ELEMENT FOR A SWITCH AND DEVICE UTILIZE THE SAME

JOHNSON ELECTRIC INTERNAT...

1. An actuating element for a switch, the actuating element comprising:a U-shaped actuating section, comprising two different arms with different lengths;
wherein a long arm is configured to transfer force to a push-button of the switch and comprises a bracket portion at a free end of the long arm for supporting the actuating element, and
wherein a short arm comprises a main body being of a straight shape extended from the long arm, the short arm is configured for a force input and is aligned obliquely to the long arm.

US Pat. No. 10,389,217

FLUID GENERATING DEVICE AND ELECTRIC APPARATUS USING THE SAME

JOHNSON ELECTRIC INTERNAT...

1. A fluid generating device comprising:a single phase motor comprising:
a stator comprising a stator core and a stator winding wound around the stator core, the stator core comprising a yoke, a plurality of teeth extending inwardly from the yoke, a pole face formed at a distal end of each of the teeth and extending along a circumferential direction of the motor;
a rotor rotatable relative to the stator, the rotor being received in a receiving chamber surrounded by the pole faces, the rotor comprising a plurality of magnetic poles confronting the pole faces of the stator, outer surfaces of the magnetic poles of the rotor and the pole faces of the stator being coaxial with each other to thereby form there between a substantially even air gap; and
an impeller being driven by the rotor to generate a fluid flow;
wherein circumferential ends of each pole face form a left cutting surface and a right cutting surface, the right cutting surface of one tooth and the left cutting surface of adjacent teeth form a slot opening, a distance between the left cutting surface and the right cutting surface forming the slot opening is 0.09 to 0.13 times an outer diameter of the rotor.

US Pat. No. 10,374,534

MAGNETIC SENSOR INTEGRATED CIRCUIT, MOTOR ASSEMBLY AND APPLICATION APPARATUS

JOHNSON ELECTRIC INTERNAT...

18. A magnetic sensor integrated circuit, comprising:a rectifier circuit converting an external power into a DC power;
a magnetic field detection circuit sensing a polarity of an external magnetic field and outputting a magnetic detection signal; wherein the magnetic field detection circuit comprises a magnetic sensor, a first chopping switch, a first amplifier unit and a switched capacitor filter module;
a timing controller outputting a first clock signal to the first chopping switch and the first amplifier unit, and a second clock signal to the switched capacitor filter module; wherein a frequency of the first clock signal is same with a frequency of the second clock signal, and the second clock signal is delayed for the first clock signal with a first predetermined time; and
wherein the magnetic sensor comprises a first terminal, a second terminal, a third terminal opposite to the first terminal, and a fourth terminal opposite to the second terminal;
a first discharging branch coupled between the first terminal and the third terminal;
a second discharging branch coupled between the second terminal and the fourth terminal;
wherein before the first terminal and the third terminal serve as power input terminals, the second terminal and the fourth terminal serve as magnetic field detection signal output terminals, the second discharging branch is turned on; before the first terminal and the third terminal serve as the magnetic field detection signal output terminals, the second terminal and the fourth terminal serve as power input terminals, the first discharging branch is turned on.

US Pat. No. 10,363,954

HOUSING ASSEMBLY FOR AN ELECTRIC MOTOR

JOHNSON ELECTRIC INTERNAT...

1. A housing assembly comprising:a housing having an open end;
a plurality of magnets located at an inner surface of the housing, each of the plurality of magnets having a radial thickness that is greater in a circumferential middle than at either circumferential end;
a magnet holder supporting the magnets, wherein the magnet holder has a plurality of arranged pillars, which are non-magnetic and spaced from each other, and extend in an axial direction of the housing, opposite circumferential ends of each of the magnets respectively directly abut against adjacent pillars; and
a cover mounted in the magnet holder for fixing the magnets,
wherein the cover is in the form of a sheet metal roll before being assembled, having an outer radius greater than a first distance between a radially inner surface of the magnet and an axis of the housing, but smaller than a second distance between a radially innermost portion of the pillar of the magnet holder and the axis of the housing; the cover is resiliently deformed when assembled to the magnet holder and magnets, and forms a plurality of first deformed portions respectively abutting against the radially inner surfaces of the magnets to resiliently urge the magnets towards the inner surface of the housing, and a plurality of second deformed portions protruding outwardly between the magnets and abutting against the radially innermost portions of the pillars.

US Pat. No. 10,340,824

MOTOR DRIVEN INTEGRATED CIRCUIT, MOTOR DEVICE, AND APPLICATION APPARATUS

JOHNSON ELECTRIC INTERNAT...

1. A motor driver integrated circuit, comprising:a plurality of position comparators, each of the plurality of position comparators receiving a pole detection signal denoting a position of a rotor of a motor;
a timer receiving a timing interrupt signal output by the plurality of position comparators when a predetermined edge of the pole detection signal generated and recording a time of the predetermined edge;
a logic selection circuit coupled between the plurality of position comparators and the timer, the logic selection circuit selecting two adjacent edges of the pole detection signal and controlling the timer to start; and
a central processing unit obtaining a rotation speed of the motor according to a time difference between two adjacent edges selected by the logic selection circuit.

US Pat. No. 10,329,826

DRIVING MECHANISM

JOHNSON ELECTRIC INTERNAT...

1. A driving mechanism, comprising:a housing;
a driving assembly and a transmission assembly disposed in the housing;
the transmission assembly having a first transmission member connected to the driving assembly, a second transmission member and a planetary gear set;
wherein the first transmission member comprises a worm, the second transmission member comprises a worm gear engaging with the worm; the planetary gear set comprises a sun gear which is non-rotatably fixed to a bottom of the worm gear along an axle of the driving assembly; one side of the worm gear defines a groove, the planetary gear set is rotatably received in the groove; the planetary gear set is coupled to an external device, the driving assembly drives the second transmission member via the first transmission member, the second transmission member drives the external device to move via the planetary gear set.

US Pat. No. 10,284,045

ELECTRIC MOTOR HAVING REINFORCING RING

JOHNSON ELECTRIC INTERNAT...

1. A motor comprising: a stator, a rotor, and a support seat,the support seat has a hollow sleeve arranged to support the rotor;
the stator comprises a stator structure and a stator winding wound about the stator structure,
the stator structure comprises:
a core of magnetic material, the core having an annular yoke and a plurality of teeth that extend radially outwardly from the yoke;
a winding frame being a molded structure comprising an insulation part that covers the core, a supporting part that is disposed within the core and forming a connection with the sleeve of the support seat to fix the stator structure to the support seat, a plurality of ribs that connect the insulation part to the supporting part, and a reinforcing ring embedded in the supporting part,
wherein a strength of the reinforcing ring is higher than a strength of the supporting part;
the supporting part is cylindrical, an inner surface of the supporting part protrudes inwardly to form an annular flange, the reinforcing ring is disposed on the annular flange, and an outer edge of the reinforcing ring is embedded in the supporting part.

US Pat. No. 10,277,098

END CAP ASSEMBLY FOR SUPPRESSING ELECTROMAGNETIC INTERFERENCE AND MOTOR HAVING THE SAME

Johnson Electric Internat...

1. An end cap assembly comprising:a brush assembly having a plurality of brushes;
a circuit board fixed relative to the brush assembly;
an inductor electrically connected to the circuit board; and
a grounded metal element positioned between the brushes and the inductor, the metal element being configured to substantially obstruct a route from the brushes to the inductor to absorb high frequency electromagnetic interference signals transmitted from the brushes;
wherein the inductor is mostly covered by the metal element, the metal element comprises a base plate and two side plates extending from two long sides of the base plate, respectively, the base plate and the side plates cooperatively defining a receiving space to receive the inductor such that the inductor is mostly covered by the metal element, the brush assembly comprises an insulating bracket to which the metal element is fixed;
wherein one side plate of the metal element bends outwardly to form a fixing tab, a fixing hole is formed in the fixing tab and a fixing post is formed on the insulating bracket and engages the fixing hole to fix the metal element to the insulating bracket.

US Pat. No. 10,270,374

MOTOR DRIVING CIRCUIT, MOTOR DRIVING METHOD, AND MOTOR UTILIZING THE SAME

JOHNSON ELECTRIC INTERNAT...

1. A driving circuit for a motor comprising a stator and a permanent magnet rotor, the stator comprising a stator core and a stator winding wound on the stator core, wherein the driving circuit comprises:a controllable bidirectional AC switch connected in series with the stator winding between two ends of an AC power source;
a position sensor which is configured to detect a magnetic pole position of the permanent magnet rotor; and
a processing unit, configured to detect a zero voltage crossing point and a voltage polarity of the AC power source, and control the controllable bidirectional AC switch to be switched between a switch-on state and a switch-off state in a predetermined way, based on the magnetic pole position of the permanent magnet rotor and the voltage polarity of the AC power source; when the controllable bidirectional AC switch is to be switched to the switch-on state, the processing unit outputs a trigger pulse to the controllable bidirectional AC switch after a delay time after the zero voltage crossing point, such that a phase difference between a back electromotive force and a current flowing through the stator winding is decreased;
wherein the driving circuit further comprises a lookup table which stores a plurality of voltage values and a plurality of corresponding delay times, the voltage values respectively represent a series of AC power sources, and the processing unit reads the delay time from the lookup table according to a voltage value of the AC power source of the driving circuit.

US Pat. No. 10,231,714

ACTUATOR OF MEDICAL DEVICE

JOHNSON ELECTRIC INTERNAT...

1. An actuator of a medical device, comprising:a housing;
a driving unit mounted in the housing;
a first moving unit mounted in the housing and being capable of sliding relative to the housing under the driving of the driving unit, the first moving unit comprising a movable first carriage;
a spring with two ends thereof lies against the housing and first carriage, respectively; and
a first lock formed between the driving unit and first carriage, the first lock comprising a first snap and a first protrusion being horizontally detachably engagable in the first snap, one of the first snap and first protrusion being formed on the first carriage, and the other one of the first snap and first protrusion being formed on the driving unit;
wherein when the first protrusion disengages from the first snap, the spring moves the first carriage relative to the housing;
a second moving unit being capable of sliding relative to housing, the second moving unit comprising a movable second carriage, a second lock formed between the first and second carriages, the second lock comprising a second protrusion formed on one of the first and second carriages, and a second snap formed on the other one of the first and second carriages, the second protrusion being detachably engagable in the second snap,
wherein when the second protrusion is engaged with the second snap, the first and second carriages are connected together and spaced from each other a predetermined distance; and when the second protrusion is disengaged from the second snap, the first and second carriages can slide relative to each other.

US Pat. No. 10,230,316

MOTOR DRIVING DEVICE AND APPLICATION APPARATUS

JOHNSON ELECTRIC INTERNAT...

1. A motor driving device for a plurality of brushless direct current motors, comprising:an inverter having a plurality of semiconductor switches and outputting an alternating current power via a first output terminal and a second output terminal;
a plurality of motor branches connected in parallel between the first output terminal and the second output terminal of the inverter, and each of the plurality of motor branches comprising a motor and a controllable bidirectional alternating current switch connected in series; and
a microprocessor controlling a conduction manner of the semiconductor switches in the inverter, and controlling whether to turn of the controllable bidirectional alternating current switch in each of the plurality of motor branches.

US Pat. No. 10,230,317

MOTOR AND FAN HAVING MOTOR

JOHNSON ELECTRIC INTERNAT...

1. A motor, comprising:a stator,
a rotor rotatably mounted to the stator, and
a motor drive device, wherein
the rotor comprises a rotary shaft, an iron core fixed on the rotary shaft and a winding arranged on the iron core,
the motor drive device is connected between the winding and a power source,
the motor drive device comprises a printed circuit board,
a control management unit and a voltage converter are arranged on the printed circuit board,
the control management unit is configured to classify target rotation speed signals provided by an ECU into a plurality of rotation speed ranges, each corresponding to a specific output duty ratio, the control management unit is configured to receive a target rotation speed signal transmitted from the ECU in a real-time manner, and output a voltage regulating signal, which is a pulse width modulation signal having a duty ratio corresponding to the rotation speed range to which the target rotation speed signal transmitted from the ECU falls; and
the voltage converter is connected between the power source and the winding, and is configured to regulate a voltage outputted to the winding in response to the voltage regulating signal having the specific duty ratio outputted from the control management unit, to regulate a rotation speed of the motor.

US Pat. No. 10,230,282

MOTOR AND STATOR THEREOF

JOHNSON ELECTRIC INTERNAT...

1. A stator comprising:a stator core comprising a yoke and a plurality of teeth extending radially from the yoke, each of the teeth comprising a tooth body connected to the yoke and a tooth tip formed at a distal end of the tooth body;
windings wound around the tooth bodies; and
a bobbin mounted to the stator core to separate the windings from the stator core, the bobbin comprising an upper bobbin and a lower bobbin, the upper and lower bobbins covering the stator core from two axial ends of the stator core, respectively, the upper and lower bobbins each comprising an end face and a side portion extending from the end face, the side portions covering circumferential side surfaces of the tooth bodies and opposed radial surfaces of the yoke and the tooth tips, the side portions being aslant relative to the axial direction of the stator, ends of the side portions forming loose fit with the stator core.

US Pat. No. 10,560,008

BRUSHLESS DIRECT CURRENT ELECTRIC MOTOR AND ELECTRIC POWER STEERING SYSTEM

JOHNSON ELECTRIC INTERNAT...

1. A brushless direct current electric motor, comprising:a first sub-motor; and
a second sub-motor,
wherein the first sub-motor and the second sub-motor share a common rotor, and each comprises an independent stator which together form a combined stator of the electric motor, the stator of the first sub-motor comprises a plurality of teeth and a plurality of windings, the stator of the second sub-motor comprises a plurality of teeth and a plurality of windings, the plurality of the windings of the first and the second sub-motors respectively form star-connection; the teeth of the first sub-motor and the teeth of the second sub-motor are interleavingly arranged in a circumferential direction or arranged side by side in an axial direction, the first sub-motor and the second sub-motor are configured to work as a single electric motor to output a normal power, and when one of the two sub-motors breaks down, the other sub-motor is capable of working independently, and
wherein the first sub-motor and the second sub-motor are respectively controlled by two controllers, the currents of the two sub-motors have a phase difference, such that the n-th order harmonic waveform of a torque of the second sub-motor is shifted relative to the n-th order harmonic waveform of a torque of the first sub-motor by (2k+1)/2period, wherein k=0, ±1, ±2, ±3 . . . .

US Pat. No. 10,559,935

ELECTRIC MOTOR AND BRUSH THEREOF

JOHNSON ELECTRIC INTERNAT...

1. A brush configured to be in contact with a commutator, comprising:a brush body comprising two opposite axial end faces; and
a protruding portion projecting from the brush body toward the commutator, the protruding portion comprising a first surface, a second surface and a plurality of teeth, the first surface and the second surface being respectively adjacent to the two axial end faces, angles formed between the first surface and the second surface and adjacent axial end faces corresponding thereto being obtuse, the plurality of teeth being located between the first surface and the second surface, and the plurality of teeth extending substantially along a circumferential direction of the commutator;
wherein a ratio of a total width of all of the plurality of teeth in an axial direction of the brush to an axial height of the brush body is in the range of 0.25-0.75.

US Pat. No. 10,554,156

MOTOR DRIVING CIRCUIT, APPLICATION DEVICE INCLUDING THE SAME, AND BRAKING METHOD FOR A MOTOR

JOHNSON ELECTRIC INTERNAT...

1. A motor driving circuit comprising:an inverter configured to convert direct current (DC) power into alternating current (AC) power to drive a motor;
a braking unit comprising a sampling circuit, a discharge circuit and a switch group, the sampling circuit and the discharge circuit being connected to the inverter, the switch group being configured to output an emergency signal when an emergency occurs;
a Microcontroller Unit (MCU) connected to the sampling circuit, the discharge circuit, and the switch group, and configured to control the sampling circuit to detect a voltage across the inverter and obtain a detected value when receiving the emergency signal, compare the detected value to a preset voltage or a preset voltage range, and transmit a control signal to activate the discharge circuit when the detected value is greater than the preset voltage or exceeds the preset voltage range,
wherein the motor driving circuit comprises a switch component, the switch component is a SPDT relay which comprises a coil, a first contact, a second contact, and a third contact, the third contact is connected to the AC power source, the second contact is null, the first contact is connected to a rectifier, when the coil is energized, the third contact is connected to the first contact, and when the emergency occurs, the coil is de-energized, the third contact is connected to the second contact, and
wherein the switch group comprises an interlock switch, and two resistors, the interlock switch and the coil of the SPDT relay are connected in series between a power source and the ground, the two resistors are connected in series between two ends of the coil of the SPDT relay, and a node of the two resistors is connected to the MCU.

US Pat. No. 10,530,286

INTEGRATED ELECTRICAL PUMP AND OIL PRESSURE CONTROL METHOD THEREOF

JOHNSON ELECTRIC INTERNAT...

1. An integrated electrical pump, comprising:a motor;
an oil pump driven by the motor; and
a pressure control system receiving a pressure command according to a working condition of a vehicle;
outputting an estimated pressure according to a motor speed which is obtained by a position sensor, an oil temperature which is obtained by an oil temperature detector, and a filtered mechanical torque;
outputting an estimated mechanical torque according to the pressure command and the estimated pressure;
obtaining an estimated electromagnetic torque according to the estimated mechanical torque and the motor speed; and
outputting a PWM signal to control the motor speed.

US Pat. No. 10,527,454

MAGNET SENSOR, MOTOR ASSEMBLY AND APPLICATION APPARATUS

JOHNSON ELECTRIC INTERNAT...

1. A magnetic sensor, comprising:a magnetic sensing element outputting a magnetic field detection signal and having a first terminal, a second terminal, a third terminal opposite to the first terminal, and a fourth terminal opposite to the second terminal;
a first discharging branch coupled between the first terminal and the third terminal;
a second discharging branch coupled between the second terminal and the fourth terminal;
wherein the first discharging branch comprises a first discharging switch and a second discharging switch which are electrically connected in series; the second discharging branch comprises a third discharging switch and a fourth discharging switch which are electrically connected in series; and
wherein before the first terminal and the third terminal serve as power input terminals, the second terminal and the fourth terminal serve as magnetic field detection signal output terminals, the second discharging branch is turned on; before the first terminal and the third terminal serve as the magnetic field detection signal output terminals, the second terminal and the fourth terminal serve as power input terminals, the first discharging branch is turned on.

US Pat. No. 10,527,302

VENTILATION ASSEMBLY FOR A HEAT EXCHANGER

JOHNSON ELECTRIC INTERNAT...

1. A ventilation assembly for a heat exchanger of a motor vehicle, comprising:a main body with a main opening,
an electric fan mounted in the main opening, comprising an impeller and an associated electric motor,
a flexible electric cable, with one end connected to the electric motor and another end connected to a connector for connecting a power supply or an associated control circuit, the connector having a plurality of terminals which are accessible from an outside of the connector,
wherein a retaining structure is disposed on the main body, configured to receive at least a part of the connector under a condition that the connector is disconnected from the power supply or the associated control circuit,
the retaining structure comprises a substantially box-shaped formation defining a cavity, the box-shaped formation having an open side for inserting the connector and a closed side for preventing an external access to the terminals of the connector,
the retaining structure further comprises a retaining member arranged between the open side and the closed side to prevent the connector from falling off, and a bottom wall,
the bottom wall and the retaining member are respectively disposed at a bottom side and a top side of the box-shaped formation, and
the bottom wall has a supporting portion which is closer to the top side of the retaining structure than the main body in a vertical direction, for supporting the connector, and a stopping portion connected between the supporting portion and the main body, to engage a flange of the connector, for limiting a forward movement of the connector in an inserting direction of the connector.

US Pat. No. 10,530,226

STATOR FOR LINEAR STEPPER MOTOR AND METHOD FOR MAKING THE SAME

JOHNSON ELECTRIC INTERNAT...

1. A stator for a linear stepper motor, the stator comprising at least four stator sheets and at least one stator winding;the at least four stator sheets being oriented towards each other and provided with bent polar arms;
the at least four stator sheets comprising at least two inner stator sheets each defining a sheet recess and outer stator sheets that are arranged in an offset manner;
all of the at least four stator sheets being joined into an integral coil body by a stator overmold;
one of the at least one stator winding being wound onto the coil body between one inner stator sheet and one outer stator sheet and connected with connector pins;
the at least four stator sheets and the stator overmold including a stator flange and a pin socket are integrally formed such that radial envelope surfaces of the at least four stator sheets are free from the stator overmold;
a stator recess inside the stator being arranged centrically in the stator overmold;
the stator overmold being enclosed by a metallic stator sleeve such that the metallic stator sleeve forms a magnetic return path together with the stator sheets; and
a sleeve opening being formed in the stator sleeve, through which a connector boot is fitted and connected with the stator overmold and/or the metallic stator sleeve and connector pins are arranged.

US Pat. No. 10,516,324

STEP MOTOR

JOHNSON ELECTRIC INTERNAT...

1. A step motor comprising:a stator comprising a stator core and stator windings, the stator core comprising a ring shaped yoke and a plurality of teeth extending inwardly from the ring shaped yoke, the stator windings wound around the plurality of teeth to form a plurality of stator poles, wherein the stator core are formed from a core strip with high magnetic conductive, the core strip are bent to enable opposite ends of the core strip to be connected with each other; and
a rotor rotatably mounted with respect to the stator and comprising a permanent magnet member surrounded by the plurality of teeth, and the rotor further comprises a rotary shaft and a rotor core directly fixed to the rotary shaft, and an outer circumferential surface of the rotor core is provided with a plurality of grooves, each groove is located at a junction between two adjacent permanent magnetic poles of the permanent magnet member.

US Pat. No. 10,514,089

AUXILIARY OIL PUMP SYSTEM

Johnson Electric Internat...

1. An auxiliary oil pump system for a gearbox, comprising:an auxiliary battery;
a controller electrically connected to the auxiliary battery; and
an auxiliary oil pump driven by the controller using a self-adaptive process,
wherein the self-adaptive process comprises:
starting the auxiliary oil pump firstly;
the controller receives current operational pressure signal and compared the current operational pressure signal to a pressure threshold;
if the current operational pressure signal is greater than the pressure threshold, the auxiliary oil pump keeps current rotational speed; and
if the current operational pressure signal is less than the pressure threshold, the auxiliary oil pump increases the rotational speed by a pre-determined speed,
wherein the auxiliary oil pump is further driven by the controller using a normal process, wherein the controller receives a first signal and a second signal, and inquires a corresponding necessary output torque of the auxiliary oil pump, and then, compares the corresponding necessary output torque of the auxiliary oil pump to a torque threshold; if the corresponding necessary output torque is less than the torque threshold, the auxiliary oil pump enters normal process; if the corresponding necessary output torque is greater than the torque threshold, the auxiliary oil pump enters a self-adaptive process.

US Pat. No. 10,495,206

INTERNAL RING GEAR, DRIVING ASSEMBLY AND APPLICATION DEVICE

JOHNSON ELECTRIC INTERNAT...

1. An internal ring gear comprising:a housing; and
at least two internal ring gears integrally arranged at an inner surface of the housing, wherein the outer surface of the housing is smooth, and a diameter of the outer surface of the housing is consistent; the housing and the internal ring gears being a one piece monolithic integral unit made of powder metal material.

US Pat. No. 10,480,619

RING GEAR, GEAR DEVICE AND MOLD FOR MANUFACTURING THE RING GEAR

Johnson Electric Internat...

1. A gear device comprising:a first planetary gear train including a first sun gear, a first planetary gear set surrounding the first sun gear, and a first carrier that is driven by revolution of the first planetary gear set about the first sun gear;
a second planetary gear train including a second sun gear, a second planetary gear set surrounding the second sun gear, and a second carrier that is driven by revolution of the second planetary gear set about the second sun gear;
a ring gear comprising a first ring gear part that comprises a first annular body and a plurality of first teeth formed on a surface of the first annular body; and a second ring gear part that comprises a second annular body and a plurality of second teeth formed on a surface of the second annular body; wherein the first ring gear part and the second ring gear part are integrally formed from powder metal, the ring gear has a density that is less than 92% of its theoretical density and in a range of 6.0 to 8.0 grams per cubic centimeter; and
a flange mounted to an end of the ring gear, wherein the flange comprises a flange body abutting the end of the ring gear, and a connecting portion extending from the flange body and being inserted into inside of the ring gear, and the connecting portion has a round circumferential surface configured to contact with tips of the teeth of the ring gear;
the first planetary gear train and the second planetary gear train disposed within the ring gear, each planetary gear of the first planetary gear set meshing with both of the first sun gear and the first teeth of the ring gear, and each planetary gear of the second planetary gear set meshing with both of the second sun gear and the second teeth of the ring gear.

US Pat. No. 10,461,590

SINGLE PHASE PERMANENT MAGNET MOTOR

Johnson Electric Internat...

1. A single phase permanent magnet motor comprising:a stator comprising a stator core and windings wound around the stator core, the stator core comprising a ring portion, a plurality of tooth bodies extending radially from the ring portion, and a pole shoe extending from a distal end to two circumferential sides of each tooth body, a slot formed between each two adjacent pole shoes;
wherein each pole shoe defines a positioning slot, a center of each positioning slot is offset from a center of symmetry of one adjacent tooth body so that a torque fluctuation of an output torque of the single phase permanent magnet motor during operation is less than 50%;
wherein a rotor is rotatable relative to the stator, and the rotor has a plurality of permanent magnetic poles cooperatively with the pole shoes for forming a symmetrical uneven air gap, a width of the slot is greater than zero and less than or equal to two times of a minimum thickness of the symmetrical uneven air gap; and
wherein the rotor comprises an outer circumferential surface of a rotor core defining a plurality of axially extending grooves, the plurality of permanent magnetic poles are arranged on the outer circumferential surface of the rotor core, each groove being located at a junction between two adjacent permanent magnetic poles to reduce magnetic leakage, the plurality of axially extending grooves being arranged to face the positioning slot.

US Pat. No. 10,461,618

PMDC MOTOR HAVING A STRUCTURE FOR PRODUCING LOW NOISE

Johnson Electric Internat...

1. A permanent magnet direct current motor comprising:stator comprising: a housing, a stator magnet disposed in an interior of the housing, and an end cap assembly,
a rotor comprising: a shaft, a rotor core mounted on the shaft and disposed within the stator magnet, rotor windings wound around the rotor core, a commutator fixed on the shaft, a plurality of commutator segments disposed on an outer surface of the commutator,
wherein the end cap assembly comprises: a plastic end cap fitted to one end of the housing, a cover disposed on an outer side of the end cap, and brushes mounted to the end cap, and
a ratio of an outer diameter of the rotor core to the outer diameter of the housing is from 0.60 to 0.659, inclusive,
an outer diameter of the rotor core is 15.9 mm, the stator magnet has a radial thickness of 3.2 mm, and the outer diameter of the housing is 24.6 mm.

US Pat. No. 10,454,354

SINGLE PHASE MOTOR

Johnson Electric Internat...

1. A single phase motor, comprising:a rotor including magnetic poles; and
a stator comprising a stator core and a winding wound on the stator core, the stator core comprising a plurality of stator teeth each comprising a tooth body extending along a radial direction of the rotor and a tooth end formed at an end of the tooth body, the tooth end comprising first and second arcuate regions facing the rotor,
wherein each magnetic pole has an edge region facing the stator, the edge regions of the magnetic poles of the rotor and the first arcuate region of the stator being coaxial with each other,
wherein, when the winding is not energized, a first magnetic coupling between said first arcuate region and a selected magnetic pole of said rotor is greater than a second magnetic coupling between said second arcuate region and the selected magnetic pole, the magnetic pole being offset from a selected tooth body in such a way as to enable movement of said rotor to initiate in either of two opposite directions relative to said selected tooth body upon energizing the winding, and
wherein each two adjacent tooth ends of the stator are completely disconnected from each other and only an empty slot is between the each two adjacent tooth ends.

US Pat. No. 10,451,023

ENGINE, ENGINE STARTER AND HOUSING ASSEMBLY THEREOF

Johnson Electric Internat...

1. An engine starter comprising:a housing assembly comprising:
a gear mounting portion for mounting a driving gear; and
a switch mounting portion for mounting a solenoid switch, the switch mounting portion comprising:
a connecting portion connected with the gear mounting portion and comprising a through structure for mounting the solenoid switch, a wall of the connecting portion corresponding to the gear mounting portion defining an opening in communication with the through structure; and
a cover body covering a top end of the through structure; and
a shifting fork disposed in the opening;
wherein the shifting fork comprises a fork section and a positioning protrusion portion disposed at an end of the fork section;
the positioning protrusion portion includes an upper protrusion portion extending between a top of the positioning protrusion portion and a top surface of the fork section, the upper protrusion portion has a height D1, the positioning protrusion portion includes a lower protrusion portion extending m of the positioning protrusion portion and a bottom surface of the fork section, the lower protrusion portion has a height D2;
the opening of the housing assembly comprises an upper slot engaging with the upper protrusion portion, a lower slot engaging with the lower protrusion portion, and a guide slot allowing the fork section to pass therethrough, the upper slot has a height H1, the lower slot has a height H2;
wherein, D1?H1, D2?H2, min(H1, H2)

US Pat. No. 10,450,797

ROLLING SHUTTER DRIVING DEVICE AND ROLLING SHUTTER APPARATUS UTILIZING SAME

JOHNSON ELECTRIC INTERNAT...

1. A rolling shutter driving device comprising:a gearbox;
a motor comprising a stator and a rotor rotatable relative to the stator, the rotor comprising a rotary shaft connected to the gearbox, the rotary shaft of the motor being configured to drive through the gearbox a rolling shutter connected to one end of the gearbox; and
a locking assembly comprising a brake pad circumferentially fixed relative to the stator and a rotary member circumferentially fixed relative to the rotary shaft, the rotary member being fixed relative to the rotary shaft, the brake pad being slidable axially relative to the rotary shaft between a locking position where the brake pad is engaged with the rotary member to lock the rotary shaft and hence hold the rolling shutter in position, and an unlocking position where the brake pad is disengaged from the rotary member to unlock the rotary shaft,
wherein the brake pad comprises a plurality of extensions engaged with the rotary member.

US Pat. No. 10,454,397

MAGNETIC SENSOR INTEGRATED CIRCUIT, MOTOR ASSEMBLY AND APPLICATION APPARATUS

JOHNSON ELECTRIC INTERNAT...

1. A magnetic sensor integrated circuit, comprising:an input port electrically coupled to an external power source;
a magnetic sensor sensing a polarity of an external magnetic field and outputting a detection signal; and
a signal processing unit having a switched capacitor filter unit to sample and filter the detection signal and eliminate an offset of the detection signal,
wherein the detection signal comprises a magnetic field signal and an offset signal; the signal processing unit comprises a first chopping switch to modulate the magnetic field signal to a high frequency region and the offset signal to a baseband frequency, the signal processing unit further comprises a chopping amplifier to amplify the magnetic field signal and the offset signal and demodulate the magnetic field signal to the baseband frequency,
wherein the switched capacitor filter unit comprises: a first switched capacitor filter, a second switched capacitor filter, a third switch capacitor filter and a fourth switched capacitor filter, and
wherein the first switched capacitor filter and the second switched capacitor filter sample a differential signal output by the chopping amplifier unit in a first half cycle as a first sub sampled signal and a second sub sampled signal, and the third switched capacitor filter and the fourth switched capacitor filter sample the differential signal output by the chopping amplifier unit in a second half cycle as a third sub sampled signal and a fourth sub sampled signal.

US Pat. No. 10,389,187

MOTOR, PUMP AND CLEANING APPARATUS

JOHNSON ELECTRIC INTERNAT...

1. A single phase motor comprising a stator and a rotor rotatable relative to the stator, the stator comprising a stator core and a pair of stator windings wound around the stator core, the stator core comprising a bottom, two branches extending from opposite ends of the bottom, and a pair of opposing poles formed on the two branches, the pair of stator windings respectively wound around the two branches of the stator core, each pole having a pole arc surface facing the rotor, the pole arc surface being concentric with the rotor, an inward-recessed startup groove being formed in the pole arc surface such that a uniform main air gap is formed between the pole arc surface and the rotor except the inward-recessed startup groove, the pair of poles comprising opposing circumferential end portions spaced apart from each other, a ratio of a distance between the circumferential end portions to a width of the uniform main air gap between the pole arc surface and the rotor being less than 2, the inward-recessed startup groove comprises two startup grooves, and the two startup grooves of the pole arc surfaces of the pair of opposing poles are symmetrical with respect to a diameter and extend from the respective circumferential end portions of the pair of opposing poles.

US Pat. No. 10,361,613

SINGLE PHASE MOTOR AND ROTOR, HAVING PLURALITY OF PERMANENT MAGNETS, OF THE SAME

JOHNSON ELECTRIC INTERNAT...

1. A single phase motor rotor, comprising:a rotor core, an outer circumferential wall of the rotor core being an irregular cylinder and comprising a plurality of spaced circular arc surfaces and transition surfaces; and
a plurality of permanent magnets evenly spaced and embedded in the rotor core,
wherein two opposite ends of each of the transition surfaces are directly connected to two of the circular arc surfaces respectively, each of the transition surfaces is a short flat surface inwardly concaved relative to the circular arc surfaces.

US Pat. No. 10,350,989

FLAP DEVICE

JOHNSON ELECTRIC INTERNAT...

1. A flap device for a support structure of a fan unit of a heat exchanger of a motor vehicle, comprising:a passage formed in the support structure; and
a shutter pivotally fitted to the support structure about an operationally horizontal axis, between a lowered rest position in which the shutter closes the passage and a raised operating position in which the shutter opens the passage, thereby allowing an air flow to pass in a predetermined direction through the passage,
wherein the shutter has two opposite ends in an extending direction of the shutter, the two opposite ends comprising a first end near to the horizontal axis and a second end far from the horizontal axis,
wherein two protrusions are integrally formed on a surface of the first end of the shutter facing the support structure, and arranged to bear against an abutment surface formed on the support structure when the shutter is in the rest position,
a distance between each protrusion and the horizontal axis is smaller than a distance between the second end of the shutter and the horizontal axis,
wherein, in use, the shutter pivots from the lowered rest position towards the raised operating position under an effect of the air flow, and returns by gravity towards the lowered rest position when the air flow ceases, causing the protrusions to contact the abutment surface,
wherein, when the shutter returns by gravity and each protrusion contacts the abutment surface, the second end is spaced apart from a corresponding formation of the support structure to avoid an impact from the second end to the corresponding formation,
wherein the two protrusions are respectively formed at two ends of the first end along a direction parallel to the horizontal axis, and each protrusion is integrally formed with the shutter as a monolithic structure, and
wherein, when the protrusions contact the abutment surface, and area of the shutter between the horizontal axis and the second end does not contact the corresponding formation of the support structure.

US Pat. No. 10,267,319

BLOWER

JOHNSON ELECTRIC INTERNAT...

1. A blower comprising:a housing comprising an inlet and an outlet;
an impeller received in the housing; and
a motor received in the housing, the motor configured to drive the impeller to rotate such that air enters the housing via the inlet and is discharged via the outlet, the motor comprising:
a stator comprising a stator core and windings wound around the stator core, the stator core comprising a yoke and a plurality of teeth extending radially outwardly from the yoke, a distal end of each of the teeth forming a tooth tip, with a slot opening being formed between each two adjacent tooth tips; and
a rotor comprising a permanent magnet forming a plurality of magnetic poles, the stator and the rotor defining an air gap therebetween, a circumferential width of the slot opening being equal to or less than two times of a radial width of the air gap;
wherein each tooth comprises a winding arm connected to the yoke, the tooth tip is formed at a distal end of the winding arm, two circumferential ends of the tooth tip extend circumferentially beyond the winding arm to form two wing portions, at least one of the two wing portions at two sides of each slot opening is tilted outwardly prior to a winding process, and the tilted wing portion is bent inwardly after the winding process is completed;
wherein one of the tooth tips with two tilted wing portions defines a dent between the tilted wing portions in an outer wall surface thereof.

US Pat. No. 10,267,331

LIQUID PUMP HOUSING

JOHNSON ELECTRIC INTERNAT...

1. A liquid pump comprising:a housing,
a motor fixed in the housing, the motor comprising a stator and a rotor rotatable relative to the stator; and
an impeller coupled to the rotor of the motor;
wherein the housing includes a C-shaped guide wall surrounding the stator, a guide face extending outwardly and downwardly from a portion of an outer surface of the guide wall between two opposite ends of the guide wall to guide a liquid flowing to the guide wall to flow in a direction away from the stator, and wherein a bottom end of the guide face is spaced apart from a lower one of the two opposite ends of the guide wall.

US Pat. No. 10,224,790

METHOD FOR THE MANUFACTURE OF ACTUATORS

JOHNSON ELECTRIC INTERNAT...

1. A method for the manufacture of actuators comprising an electric motor (1) for driving an output shaft (10), a sensor device (20) for generating a signal which is a function of the angle at which the output shaft is rotated, and a support surface (30a) with mounting points (31a-31c) for the mounting of an actuator, wherein the following method steps are carried out in the production of a said actuator:A1) Providing an arrangement comprising at least the output shaft (10) and the sensor device (20),
A2) Driving the output shaft so that the sensor device supplies a predetermined signal value, which defines a setpoint for the angular position of the output shaft,
A3) Defining the actual angular position of the output shaft as an actual value, and
A4) mechanically adjusting at least one actuator component, which takes place depending on the deviation between the actual value and the setpoint such that the output shaft has an output end (40b), the angular position of which is compared to the setpoint.