US Pat. No. 9,091,293

ROTARY FASTENER

HANWIT PRECISION INDUSTRI...

1. A rotary fastener installed in a mounting through hole of a first panel member and adapted for detachably locking said
first panel member to a locking hole of a second panel member, the rotary fastener comprising:
a mounting base member comprising a stepped accommodation chamber defined therein, a position-limit structure located at the
periphery thereof and a bottom mounting neck located at a bottom side thereof and affixed to said mounting through hole of
said first panel member;

a fastening device adapted for fastening to said locking hole of said second panel member to lock said first panel member
to said second panel member, said fastening device comprising a pin member having a bottom end thereof inserted into said
stepped accommodation chamber of said mounting base member and terminating in an expanded bottom engagement portion and an
opposing top end thereof extended out of a top side of said mounting base member a head member fastened to the top end of
said pin member and disposed outside said mounting base member;

an elastic member mounted around said pin member and stopped between said expanded bottom engagement portion and a part of
said mounting base member; and

an operating device operable to move said fastening device between a locking position where said expanded bottom engagement
portion is moved out of said stepped accommodation chamber of said mounting base member and engaged into said locking hole
of said second panel member and an unlocking position where said stepped accommodation chamber is received in said stepped
accommodation chamber of said mounting base member and disengaged from said locking hole of said second panel member, said
operating device comprising a bottom seat member attached to said position-limit structure around said mounting base member,
said bottom seat member comprising a position-limit space adapted for accommodating said position-limit structure to prohibit
said bottom seat member from movement relative to said mounting base member, an operating cap member fastened to said head
member of said fastening device and rotatable relative to said bottom seat member and said mounting base member to move said
fastening device between said locking position and said unlocking position, said operating cap member comprising a bottom-open
chamber adapted for accommodating said head member, and a guide track disposed between said bottom seat member and said operating
cap member to guide said operating cap member and said fastening device to move axially relative to said bottom seat member
and said mounting base member during a rotary motion of said operating cap member by an external force.

US Pat. No. 9,206,834

FLOATING FASTENER

HANWIT PRECISION INDUSTRI...

1. A floating fastener installed in a mounting through hole of a first panel member and adapted for detachably locking said
first panel member to a mounting screw hole of a second panel member, the floating fastener comprising:
a mounting base member comprising opposing top side and bottom side, a center opening vertically extending through said opposing
top and bottom sides, a bottom mounting neck downwardly extended from said bottom side around said center opening and affixed
to said first panel member, a lower outer perimeter and an upper outer perimeter extending around said center opening at different
elevations, said upper outer perimeter having an outer diameter larger than said lower outer perimeter, a tapered outer surface
portion connected between said lower outer perimeter and said upper outer perimeter around said center opening, a locating
groove extending around said lower outer perimeter near said bottom mounting neck, a cushion ring mounted in said locating
groove around said lower outer perimeter, and an outer stop flange extending around a top side of said upper outer perimeter;

a rotary fastening member axially movably mounted in said mounting base member, said rotary fastening member comprising a
head suspending above said mounting base member, a shoulder perpendicularly downwardly extended from a flat bottom wall of
said head and a screw rod axially downwardly extended from said shoulder in a concentric manner and adapted for threading
into said mounting screw hole of said second panel member; and

a cap member affixed to said head of said rotary fastening member, said cap member comprising an accommodation open space
surrounded by an inside wall thereof and extending through opposing top and bottom sides thereof, an inside locating groove
extending around the inside wall near the top side thereof for engagement with the periphery of said head of said rotary fastening
member, an inside bottom stop flange extended around the inside wall thereof at a bottom side of said accommodation open space
and coupled to said mounting base member axially slidably along said lower outer perimeter, said tapered outer surface portion
and said upper outer perimeter of said mounting base member and stoppable at a bottom side of said outer stop flange of said
mounting base member.

US Pat. No. 9,347,471

FLOATING FASTENER MOUNTING STRUCTURE

HANWIT PRECISION INDUSTRI...

1. A floating fastener mounting structure, comprising a metal panel member, a mounting socket affixed to said metal panel
member, a lock screw mounted in said mounting socket, and a spring member mounted in said mounting socket to floatably support
said lock screw in said mounting socket, wherein:
said metal panel member comprises a mounting through hole, and a convex wall portion disposed around said mounting through
hole and defining a bottom accommodation space;

said mounting socket is upwardly inserted through said mounting through hole of said metal panel member and riveted to said
metal panel member, said mounting socket comprising a center hole vertically extending through opposing top and bottom walls
thereof for accommodating said lock screw and said spring member, an annular step extended around the outer perimeter thereof
at a selected elevation, a stop flange extended around the outer perimeter of said mounting socket below said annular step,
and a annular locating groove extended around the outer perimeter between said annular step and said stop flange, the outer
diameter of said stop flange being larger than the outer diameter of said annular step, said annular step defining a downwardly
and outwardly sloping top surface for guiding said convex wall portion of said metal panel member downwardly over said annular
step into engagement with said annular locating groove.

US Pat. No. 9,746,015

FLOATING FASTENER MOUNTING STRUCTURE

HANWIT PRECISION INDUSTRI...

1. A floating fastener mounting structure, comprising a metal panel member, a mounting socket affixed to said metal panel
member, a locking member mounted in said mounting socket and insertable into a locating hole in an external metal panel member
to lock said metal panel member to said external metal panel member, and a spring member mounted in said mounting socket to
floatably support said locking member in said mounting socket, wherein:
said mounting socket comprising a center hole vertically extending through opposing top and bottom surfaces thereof, an annular
step extended around the periphery thereof at a selected elevation, a stop flange extended around the periphery thereof in
flush with the bottom surface of said mounting socket, and a locating groove extended around the periphery thereof between
said annular step and said stop flange, the outer diameter of said stop flange being larger than the outer diameter of said
annular step;

said locking member comprising a shank inserted through the center hole of said mounting socket, a mounting head located at
a top end of said shank and extended out of the top surface of said mounting socket, and an expanded locking end tip located
at an opposing bottom end of said shank;

said spring member is mounted around said shank of said locking member and stopped between a part of said mounting socket
and a part of said locking member;

said cap member is affixed to said mounting head of said locking member, comprising an accommodation chamber that accommodates
a part of said mounting socket and a part of said locking member, the outer diameter of said cap member being equal to or
smaller than the outer diameter of said annular step of said mounting socket;

said metal panel member comprising a mounting through hole cut through opposing top and bottom surfaces thereof for the insertion
of said mounting socket and said cap member therethrough, and a riveting portion formed of a part of said metal panel member
around said mounting through hole by stamping and engaged into said annular locating groove of said locking member and wrapped
about said stop flange of said mounting socket to affix said mounting socket to said metal panel member.

US Pat. No. 9,695,852

FLOATING FASTENER MOUNTING STRUCTURE

HANWIT PRECISION INDUSTRI...

1. A floating fastener mounting structure, comprising a metal panel member, a mounting socket affixed to said metal panel
member, a locking member mounted in said mounting socket and insertable into a locking hole in an external metal panel member
to lock said metal panel member to said external metal panel member, and a spring member mounted in said mounting socket to
floatably support said locking member in said mounting socket, wherein:
said mounting socket comprises a center hole vertically extending through opposing to and bottom sides thereof, an annular
bottom stop flange extending the periphery thereof at the bottom side, and a mounting portion located at a bottom side of
said annular bottom stop flange around said center hole;

said locking member comprises a shank inserted through said center hole of said mounting socket, a mounting head located at
a top end of said shank and disposed above said mounting socket, an expanded locking end tip located at an opposing bottom
end of said shank;

said spring member mounted around said shank of said locking member and stopped between a part of said mounting socket and
a part of said locking member and compressible upon axial movement of said locking member relative to said mounting socket;

a cap member is fastened to said mounting head of said locking member for enabling a part of said mounting head of said locking
member to be disposed above said cap member, said cap member comprising an accommodation chamber adapted for accommodating
a part of said mounting socket and a part of said mounting head of said locking member, the outer diameter of said cap member
being equal to or smaller than the outer diameter of said annular bottom stop flange;

wherein said locking member further comprises a position-limit groove extended around the periphery of said mounting head
and abutted to said shank; said cap member further comprises a mating connection portion located in a top side of said accommodation
chamber for securing said mounting head of said locking member, a mounting hole vertically cut through the center of said
mating connection portion in communication with said accommodation chamber for enabling a part said mounting head of said
locking member to extend to the outside of said cap member, and an engagement flange located in said mating connection portion
and projecting into said mounting hole and engaged into said position-limit groove of said locking member.

US Pat. No. 9,897,136

HINGE

Hanwit Precision Industri...

1. A hinge mounted in a mounting hole of a first panel member and riveted to a through hole of a second panel member to pivotally
connect said first panel member to said second panel member, comprising:
a bearing seat member made of a non-deformable metal material in one piece, said bearing seat member comprising an axle hole
cut through opposing top and bottom walls thereof and a mating connection part located on the bottom wall of said bearing
seat member around said axle hole and fastened to said mounting hole of said first panel member;

a pivot shaft made of a deformable metal material in a one piece, said pivot shaft comprising a disc-shaped head pivotally
mounted in said axle hole of said bearing seat member, a stem vertically downwardly extended from the center of a bottom wall
of said disc-shaped head and suspended outside said axle hole of said bearing seat member and a conical riveting portion located
at a distal end of said stem opposite to said disc-shaped head and riveted to the said through hole of said second panel member,
said conical riveting portion comprising a tapered upper guide surface disposed in close contact with a tapered mating surface
in the said through hole of said second panel member; and

a washer made from an elastic material and mounted around said stem of said pivot shaft and stopped at the bottom wall of
said bearing seat member, said washer comprising a center hole cut through opposing top and bottom walls thereof for the passing
of said stem of said pivot shaft;

wherein said pivot shaft further comprises a stop flange extended around the periphery of said stem and stopped against the
bottom wall of said washer.

US Pat. No. 9,970,592

DETACHABLE MOUNTING DEVICE

HANWIT PRECISION INDUSTRI...

1. A detachable mounting device, comprising:at least one mounting member, each of said at least one mounting member comprising a base portion, an extension portion downwardly extended from a bottom side of said base portion, an accommodation open chamber defined in said base portion and an upper part of said extension portion in communication with a space outside of said at least one mounting member, a mounting through hole axially cut through a remote bottom side of said extension portion in communication with said accommodation open chamber, said mounting through hole having a diameter relatively smaller than a diameter of said accommodation open chamber, a stepped annular stop edge defined in said extension portion between said mounting through hole and said accommodation open chamber, an annular inside flange extended around a periphery of said accommodation open chamber within said extension portion and spaced above said stepped annular stop edge, and an annular positioning groove defined in said extension portion between said mounting through hole and said annular inside flange; and
a fastening member detachably mounted in each of said at least one mounting member and fastenable to a mounting screw hole in a mating connection member of an external panel member to fixedly secure said at least one mounting member to said mating connection member, said fastening member comprising a head positioned in said annular positioning groove between said mounting through hole and said annular inside flange, a driving portion located on a top side of said head configured to position a hand tool for rotating said fastening member, and a fastening shank downwardly extended from an opposing bottom side of said head and suspended in said mounting through hole of said mounting member.

US Pat. No. 10,132,345

FASTENING DEVICE

HANWIT PRECISION INDUSTRI...

1. A fastening device comprising a sleeve, a rotary knob device and a drive cap, wherein:said sleeve is in a hollow shape and formed with a through-hole inside, and said through-hole defines a rotation space having a larger diameter at a side thereof, a fastening part is formed on an outer side thereof corresponding in position to said rotation space, and a position-limiting ring is formed on other side thereof opposite to said fastening part and has a larger diameter, and said position-limiting ring comprises at least two sets of position-limiting fastening grooves disposed on a periphery thereof and opposite to each other;
wherein said rotary knob device is movably assembled in said through-hole of said sleeve and comprises a rotary rod movably inserted through said through-hole, and said rotary rod comprises a rotation pin formed at an end thereof and movably located in said rotation space of said through-hole, and a rod head disposed at other end thereof opposite to said rotation pin and exposed out of said sleeve, and an elastic member is mounted on the outside of said rotary rod under said rod head and abutted with an inner wall of said through-hole by other end thereof; and
wherein said drive cap is assembled with said rotary knob device and comprises an assembly space inside for assembling with said rod head of said rotary knob device, and said rotary rod located at a side of said rod head is extended out of said drive cap along said assembly space, and said assembly space is formed with a sliding inner hole for covering said position-limiting ring of said sleeve, and said position-limiting ring is longitudinally movable in said sliding inner hole, and said sliding inner hole comprises two long protrusion rods formed on a sidewall thereof and opposite to each other, two short protrusion rods formed on the sidewall thereof and opposite to each other, each of said two short protrusion rods is disposed between said two long protrusion rods, and said two long protrusion rods and said two short protrusion rods are separately aligned with and fastened in said position-limiting fastening grooves formed on a periphery of said position-limiting ring of said sleeve.

US Pat. No. 10,561,034

LOCATING DEVICE

Hanwit Precision Industri...

1. A locating device, comprising:a guiding member comprising a guiding space formed inside thereof;
a sliding assembly comprising a shaft part disposed inside thereof;
a pulling assembly comprising a pulling member comprising a sliding member disposed on a side thereof and configured to longitudinally reciprocate in the guiding space of the guiding member, and the pulling assembly comprising an axis coupling part disposed on other side thereof opposite to the sliding member and pivotally connected to the shaft part of the sliding assembly, wherein when the pulling assembly is operated to close, the sliding member is longitudinally moved upwardly to a closed position in the guiding space, and make the sliding assembly simultaneously slide in an another direction opposite to a sliding direction of the sliding member, and when the pulling assembly is opened, the sliding member is longitudinally moved downwardly to an open position in the guiding space, and make the sliding assembly simultaneously move back.

US Pat. No. 10,302,108

FIXING DEVICE

HANWIT PRECISION INDUSTRI...

1. A fixing device comprising a fixing assembly, a first plate and a second plate, wherein:the fixing assembly comprises a sleeve, a position-limiting device, an elastic element, and a fastener, the sleeve comprises a hole cut therethrough and a fastening part formed at a bottom thereof, the position-limiting device is disposed inside the sleeve and comprises an embedded hole cut through a central portion thereof, the elastic element is abutted between a bottom of the position-limiting device and the sleeve, the fastener is inserted into the hole of the sleeve from bottom of the sleeve and fixed on the position-limiting device, and wherein the fastener comprises a butt joint part configured to embed into the embedded hole, a rod extended from a bottom of the butt joint part and configured to insert through the hole of the sleeve, and a stop section extended outwardly from a bottom of the rod, out of the sleeve and having an outer diameter higher than a diameter of the hole, and the stop section comprises a stop part outwardly protruded at a bottom thereof and having an outer diameter gradually-extended, and the stop part comprises a guiding incline formed at a top thereof;
wherein the first plate comprises a hole configured to fix the fastening part of the sleeve;
wherein the second plate is placed in parallel to the first plate for assembly, the second plate comprises a base plate, a first fastening recess cut through the base plate and configured for insertion of the stop section, and a sheet folded and extended from a side of the base plate, and the sheet comprises a second fastening recess cut therethrough, located below and aligned with the first fastening recess, having an outer diameter larger than that of the first fastening recess, and configured for insertion of the stop part, and wherein a folded portion of the second plate comprises a channel cut therethrough from outside to inside and in communication with the first fastening recess and the second fastening recess, and the channel comprises supporting protrusions at an end portion thereof and respectively protruded from two inside walls of a side of the base plate, and the folded portion of a side of the second plate comprises supporting surfaces respectively formed at two outer sides of the channel, and configured to abut against the guiding incline of the stop part, to drive the rod to move out of the hole of the sleeve.

US Pat. No. 10,294,971

FIXING DEVICE

HANWIT PRECISION INDUSTRI...

1. A fixing device comprising a fixing assembly, a first plate and a second plate, wherein:the fixing assembly comprises a sleeve, an outer casting tube, a head part, a resilient component and a fastener, said sleeve has a through hole inside and cut therethrough, and has a plurality of grooves recessed on an outer surface thereof and arranged with equal interval, and a positioning part disposed on a bottom side thereof, and wherein said outer casting tube is disposed at a top of said sleeve and has a receiving space inside for insertion of said sleeve, and said receiving space is formed with at least one longitudinal protrusion rib disposed on an inside wall thereof and slidable in the plurality of grooves, and wherein said head part is disposed inside the receiving space of said outer casting tube and has a mounting hole formed at a central part thereof and cut therethrough, and said resilient component is abutted between said head part and said sleeve, and said fastener is disposed under said sleeve, inserted into said through hole and fixed on said head part, and said fastener has a riveting part mounted in said mounting hole, and a rod extended from a bottom thereof and inserted through said through hole, and wherein said rod has longitudinal sections formed on two opposite sides of the outer surface thereof and cut therethrough, and said fastener has arc surfaces formed on other two opposite sides of the outer surface thereof, and said rod has a stop part outwardly protruded on a bottom side thereof, and said stop part has a guiding incline formed at a top thereof;
wherein said first plate has a hole for fixation of said positioning part of said sleeve; and
wherein said second plate is placed in parallel to said first plate and has a cut groove cut through and having a tapered shape from outside of a side of said second plate for insertion of said fastener, and said cut groove has a narrow portion formed at an end thereof and configured to be blocked by said arc surfaces for rotation of said outer casting tube, and said narrow portion has a fastening hole extended from a side thereof and configured for insertion of said rod, and said fastening hole has a gradually-extended incline formed on a sidewall thereof remote from said first plate and configured for return of said stop part, and said second plate has a supporting surface formed on ends of two side surfaces of said cut groove and tapered outwardly, and configured to push said guiding incline of said stop part to extend said rod out of said through hole of said sleeve.

US Pat. No. 10,487,866

FASTENING DEVICE

HANWIT PRECISION INDUSTRI...

1. A fastening device, comprising a sleeve, a rotary knob device and a drive cap, wherein:said sleeve is in a hollow shape and formed with a through-hole inside, and said through-hole defines a rotation space having a larger diameter at a side thereof, a fastening part is formed on an outer side of said sleeve corresponding in position to said rotation space, said fastening part is assembled into a fixing hole of a first plate, and a position-limiting ring is formed on other side of said sleeve opposite to said fastening part and has a larger diameter, and said position-limiting ring comprises a first position-limiting fastening groove, two second position-limiting fastening grooves formed at two opposite sides of said first position-limiting fastening groove, and a protrusion ring formed between said two second position-limiting fastening grooves and having an extended outer diameter, and said first position-limiting fastening groove, said two second position-limiting fastening grooves and said protrusion ring are formed on a periphery of said position-limiting ring;
wherein said rotary knob device is movably assembled in said through-hole of said sleeve and comprises a rod head disposed above said sleeve and a fastening member downwardly extended from a bottom surface of said rod head and inserted through said through hole, said fastening member comprises a rod, and a fastening part formed at a lower part of said rod and movably disposed in said rotation space, and said rotary knob device comprises an elastic member mounted outside said fastening member and elastically abutted with said bottom surface of said rod head and an inner wall of said through-hole;
wherein said drive cap is assembled with exterior of said rotary knob device and comprises an assembly space inside for assembling with said rod head of said rotary knob device, and said assembly space is formed with a sliding inner hole for covering said position-limiting ring of said sleeve, and said position-limiting ring is longitudinally movable in said sliding inner hole, and said sliding inner hole comprises a long protrusion rod formed on a sidewall thereof and configured to align and engage with said first position-limiting fastening groove of said position-limiting ring, and two short protrusion rods formed on two opposite sides of said long protrusion rod, having relatively-shorter lengths and configured to align and engage with said two second position-limiting fastening grooves, and said sliding inner hole comprises a rotation section formed above said two short protrusion rods, opposite to said long protrusion rod and configured for reciprocating rotation of an outer edge of said position-limiting ring;
wherein before said drive cap is pressed down, said protrusion ring is blocked by said two short protrusion rods, and after said drive cap is pressed down to rotate, said fastening part of said fastening member is rotated to engage with a through hole of a predetermined second plate and said protrusion ring is blocked by said long protrusion rod.