US Pat. No. 10,469,642

MIDDLE FRAME FOR MOBILE PHONE

GUANGDONG EVERWIN PRECISI...

1. A middle frame for a mobile phone, comprising:a middle plate, wherein an edge of the middle plate forms a latching portion;
a boarder frame defining a latching groove on a side thereof facing the middle plate, wherein the latching portion is riveted in the latching groove, the middle plate and the border frame form a first seam and a second seam on a junction portion therebetween;
and the middle plate and the border frame are provided with a first mounting groove and a second mounting groove therebetween, the first seam is located in the first mounting groove, the second seam is located in the second mounting groove; and
first and second sealing elements, wherein the first sealing element is filled in the first mounting groove, and the second sealing element is filled in the second mounting groove.

US Pat. No. 11,116,099

RIVETED METAL MIDDLE FRAME AND ELECTRONIC DEVICE

GUANGDONG EVERWIN PRECISI...


1. A riveted metal middle frame, comprising:a middle plate, wherein the middle plate is made of aluminum alloy, and a periphery of the middle plate is convexly provided with a convex edge; and
a border frame riveted to the middle plate, wherein the border frame comprises a plurality of members connected end to end in sequence, the plurality of the members are connected end to end to form an enclosure frame structure that is sleeved on a periphery of the middle plate, each of the plurality of members is made of a metal material with a hardness not less than that of aluminum alloy, the plurality of members are riveted to the periphery of the middle plate, an inner side of each of the plurality of members is respectively provided with a slot for connecting the convex edge, and the convex edge is riveted to the slot by press-fitting the border frame.

US Pat. No. 11,110,558

TURNING/MILLING SYSTEM AND TURNING/MILLING METHOD

GUANGDONG EVERWIN PRECISI...


1. A turning and milling method, comprising:positioning a workpiece on a work station of a rotary table, and causing a to-be-machined surface of the workpiece to protrude from the rotary table, wherein the workpiece has a top surface, a lower surface, corners connecting the top and lower surfaces, and edges connecting the top and lower surfaces, the edges also interconnecting the corners;
establishing a three-dimensional coordinate system O-XYZ, wherein axis Z is a vertical axis passing through a geometric center O of a machining area of the workpiece, axis X and axis Y are horizontal axes perpendicular to each other;
inputting parameters of a model workpiece into a control terminal, calculating axis Z coordinate values corresponding to the top surface and to curved surfaces at the edges of the workpiece according to the inputted parameters, then obtaining machining depths of a cutter at different positions along the axis Z; and
setting a variation rate of a machining radius of the cutter that is a distance between the cutter and the geometric center O of the machining area and setting a rotation frequency of the rotary table, and driving the cutter to perform machining, wherein the machining successively includes machining of the corners of the workpiece, turning and milling of the top surface, and machining of the curved surfaces at the edges of the workpiece;
during the machining of the corners of the workpiece: a second drive mechanism is controlled to drive the cutter to move to a first machining position of one of the corners of the workpiece, and the second drive mechanism is also controlled to drive the cutter to move vertically according to machining depths on the axis Z corresponding to different machining positions of the corners of the workpiece, and when a first drive mechanism is controlled to drive the rotary table to cause the workpiece to rotate about the vertical axis of the workpiece, the second drive mechanism drives the cutter to gradually reduce the machining radius until the machining of the corners of the workpiece is completed.

US Pat. No. 11,089,142

PROCESS OF PROCESSING MIDDLE FRAME OF MOBILE PHONE

GUANGDONG EVERWIN PRECISI...


1. A process of processing a middle frame of a mobile phone, comprising:providing at least two metal components, each of the metal components defining a riveting groove;
providing a metal middle plate having a riveting projection at edges thereof;
correspondingly mounting each of the metal components on the edges of the metal middle plate to form a border frame surrounding the metal middle plate, respectively; the riveting projection being received in the riveting groove of the metal component, the riveting projection being in clearance fit with the riveting groove; and
applying a force to the border frame to deform at least one of the riveting groove and the riveting projection, such that the riveting projection is latched in the riveting groove, and the border frame and the metal middle plate are connected to form the middle frame of the mobile phone.

US Pat. No. 10,827,048

CARD TRAY OPENING/CLOSING MECHANISM, CARD TRAY, MOBILE PHONE, AND CARD TRAY OPENING/CLOSING METHOD

GUANGDONG EVERWIN PRECISI...

1. A card tray opening and closing mechanism configured to move a card tray body into or out of a slot of a mobile phone body, the card tray opening and closing mechanism comprising:a micro motor fixedly connected in the mobile phone body and configured to be communicatedly connected to the mobile phone body, the micro motor comprising an output shaft; and
a transmission assembly comprising a gear and a rack, wherein the gear is fixedly connected to the output shaft of the micro motor, the rack is configured to be fixed to the card tray body, and the gear is engaged with the rack in such a manner that when the output shaft of the micro motor rotates, the gear rotates synchronously with the output shaft to drive the rack engaged therewith to move the card tray body into or out of the slot.