TWI543463B - Electrical connector and method for making the same - Google Patents

Description

Electrical connector and method of manufacturing same

The present invention relates to an electrical connector and a method of fabricating the same, and more particularly to a USB receptacle electrical connector for improving solder tail arrangement and a method of fabricating the same.

The Republic of China Patent Publication No. M432980 discloses a USB socket electrical connector comprising an insulative housing, a plurality of conductive terminals received in the insulative housing, and a metal housing encased on the outside of the insulating body. The metal housing includes a metal inner casing and a metal outer casing. Soldering legs are respectively disposed on both sides of the metal inner casing and the metal casing to be soldered on the circuit board. The rear end of the metal inner casing is bent downward to form a rear wall opposite to the rear end surface of the insulating body, and the rear wall extends downward to form a fixing leg correspondingly fixed to the circuit board. In the prior art, such a USB socket is generally assembled after the metal inner casing and the metal outer casing are welded together, and then sleeved on the outside of the insulating body, and then the metal inner casing is bent and the fixing wall is pressed against the insulating body. End face. In the whole assembly process, the rear wall of the metal inner casing assembled with the insulating body is bent downwardly against the rear end surface of the insulating body by the jig, and the bending precision of the rear wall is difficult to ensure; in actual production It is easy to cause damage to the insulating body and the problem that the rear wall of the inner metal shell after bending is not closely attached to the rear end surface of the insulating body. The Republic of China Patent Publication No. M322654 discloses a USB socket electrical connector having a solder tail on the front side and the back end. The only one of the USB sockets does not guarantee the strength of the housing when the solder fillet is bent. In order to ensure that the blocking portion and the card plate on the outer casing are engaged with the groove on the insulating body, the soldering legs at the rear end of the outer casing must be bent downward and then horizontally extended after the outer casing is sleeved on the outer body of the insulating body. Ensure the tightness of the outer casing and the insulating body and the accuracy of the solder fillet. The Republic of China Patent Publication No. M389967 discloses a USB socket electrical connector having a soldering leg on the side and the rear end of the casing. The arrangement of the soldering legs of the USB socket is not conducive to the combination of the inner casing and the outer casing, and the inner casing is easily separated. Bad results.

Therefore, there is a need for an improved electrical connector to compensate for the above-discussed deficiencies in the prior art.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electrical connector, and more particularly to an inventive electrical connector and method of fabricating the same, which has an improved arrangement of solder fillets for ease of product assembly and also ensures accuracy of the bent leg of the fixture.

In order to achieve the above object, the present invention provides an electrical connector including an insulative housing, a plurality of conductive terminals received in the insulating body, and a metal housing sleeved outside the insulating body, the metal housing including a metal inner casing and a metal outer casing disposed outside the metal inner casing, the metal outer casing including a lower wall, two opposite side walls extending upward from two sides of the lower wall, and an upper wall opposite to the lower wall, the metal inner The shell includes a top wall, two opposite side walls extending downward from opposite sides of the top wall, and a bottom wall opposite to the top wall, wherein the metal casing is formed by bending downward from the rear end of the upper wall The first soldering leg and the rear end of the two inner sidewalls of the metal inner casing are stamped with a fixing leg, and the fixing leg is located outside the first soldering leg.

In order to achieve the above object, the present invention provides a method for manufacturing an electrical connector, comprising: providing a conductive terminal; and molding an insulating body, wherein the conductive terminal is held in the insulating body; providing a metal plate, respectively stamping the metal plate into the metal inner casing And a metal casing having a lower wall, a lower wall opposite to the lower wall, and connecting the upper wall and the lower wall a side wall, a first welding leg extending downwardly from a rear end of the upper wall, the metal inner casing comprising a top wall, two opposite side walls extending downward from opposite sides of the top wall, and opposite to the top wall a bottom wall, the rear end of the two side walls is stamped with a fixing leg, the fixing leg is located outside the first welding leg; the metal inner casing is sleeved in the plugging direction from the front to the back of the insulating body; and the metal casing is inserted The connecting direction is sleeved from the back to the outside of the metal inner casing.

Compared with the prior art, the present invention has the following effects: the fixing leg is located between the first soldering leg and the second soldering leg in the plugging direction, and the arrangement of the soldering legs of the metal inner shell and the metal shell satisfies two The combination of the strength of the shell facilitates the assembly of the product, and also ensures the accuracy of the bending of the fixture to ensure the quality of the product.

100‧‧‧Electrical connector

1‧‧‧Insulating body

11‧‧‧ base

111‧‧‧Front card slot

112‧‧‧ rear card slot

113‧‧‧ Groove

12‧‧ ‧ tongue

120‧‧‧ accommodating slots

21‧‧‧Metal inner shell

210‧‧‧ docking chamber

211‧‧‧ top wall

212‧‧‧ side wall

213‧‧‧ bottom wall

2131‧‧‧Importing block

2132‧‧‧ card holder

2133‧‧‧Abutment arm

2134‧‧‧ convex hull

214‧‧‧Fixed feet

215‧‧‧ first punched hole

2150‧‧‧ Lower bump

2151‧‧‧First clamping feet

22‧‧‧Metal casing

221‧‧‧The lower wall

2211‧‧‧ protrusion

2212‧‧‧Cargukong

2213‧‧‧Protruding

222‧‧‧ Side wall

223‧‧‧上壁

224‧‧‧First welding feet

225‧‧‧Second welding feet

226‧‧‧Second punching hole

2261‧‧‧Second clamping feet

3‧‧‧Electrical terminals

31‧‧‧Docking Department

32‧‧‧Weld Department

33‧‧‧Fixed Department

4‧‧‧ Strengthening board

40‧‧‧Connecting plate

41‧‧‧Inlay inserts

42‧‧‧Reinforcement plate

The first figure is a perspective assembled view of the electrical connector of the present invention.

The second figure is a three-dimensional combination diagram of the electrical connector seen from the oblique rear.

The third figure is a partially exploded perspective view of the electrical connector of the present invention.

The fourth figure is a partial exploded view of the third figure from another angle.

Figure 5 is a perspective exploded view of the electrical connector of the present invention.

The sixth figure is a three-dimensional exploded view of the fifth figure from another angle.

The seventh figure is a rear view of the first figure.

The eighth figure is a side view of the first figure.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a specific embodiment of the electrical connector 100 of the first embodiment of the invention will be described in detail with reference to the accompanying drawings.

Referring to the first to eighth figures, the electrical connector 100 of the present invention includes an insulative body 1 The plurality of conductive terminals 3 and the reinforcing plate 4 housed in the insulative housing 1 and a metal case (not labeled) that is sleeved on the outer periphery of the insulative housing 1. The metal casing includes a metal inner casing 21 and a metal casing 22. For convenience of description, the following reference to the orientation is always referred to in the first figure, wherein the mating end of the electrical connector 100 and the mating connector is the front end, and the other end is the rear end.

Referring to the third to sixth figures, the insulative housing 1 includes a base portion 11 and a tongue plate 12 extending forward from the base portion 11 and provided with a plurality of receiving grooves 120. A front locking groove 111 is defined in each of the two sides of the bottom portion of the base portion 11 , and a rear locking groove 112 is defined on both sides of the bottom end of the base portion 11 , and a groove 113 is defined on both sides of the bottom end of the base portion 11 . .

Each of the conductive terminals 3 includes a pair of joint portions 31 , a welded portion 32 , and a fixing portion 33 for connecting the abutting portion 31 and the welded portion 32 . The abutting portion 31 is correspondingly disposed in the receiving groove 120 of the tongue plate 12 for electrical contact with the mating connector. The fixing portion 33 is covered and fixed in the base portion 11 of the insulative housing 1. The soldering portion 32 projects substantially horizontally rearward from the rear end surface of the base portion 11 of the insulative housing 1 for connection to the docking circuit board.

The reinforcing plate 4 includes a connecting plate 40 fixed in the base portion 11 of the insulative housing 1 , an inserting piece 41 extending outward from the connecting plate 40 toward the rear end of the insulative housing 1 , and extending along the connecting plate 40 toward the front end and correspondingly holding on A reinforcing plate 42 in the tongue 12 . The reinforcing plate 4 is used to reinforce the strength of the insulating body 1, in particular the strength of the tongue 12 of the insulating body 1.

Referring to the fourth to sixth figures, the metal inner casing 21 is sleeved on the outer circumference of the insulative housing 1 and integrally formed by stamping and bending a metal plate, and has a top wall 211 and the top wall. Two opposite side walls 212 extending downwardly from opposite sides of the 211 and a bottom wall 213 extending from opposite ends of the two side walls 212 are formed by the three together to form a front and rear two The docking chamber 210 is open to receive the tongue 12 therein. a position at the center of the top wall 211 is formed by stamping The first punching hole 215. Each of the two sides of the front end of the first punching hole 215 has a lower bump 2150. The lower bump 2150 is correspondingly engaged with the two front retaining grooves 111 of the insulating body 1. A rear side of the two lower bumps 2150 is correspondingly provided with a first clamping leg 2151 extending horizontally from opposite sides of the first punching hole 215 and bent into the mating cavity 210. The first clamping leg 2151 corresponds to the clamping base 11 Upper rear end face. A fixing leg 214 is formed at the rear end of the two side walls 212, and the fixing leg 214 is fixed to the circuit board. The bottom wall 213 is provided at its front end edge with an outwardly symmetrical and symmetrical arrangement of the introduction block 2131 for guiding the holding structure on the docking connector (not shown). Insert and snap into the metal casing 22. A latching hole 2132 is defined in the through-substrate wall 213 after the two latching blocks 2131. The latching hole 2132 is configured to be engaged with the latching structure on the mating connector to achieve stable docking. The front end of the latching hole 2132 has a convex cover 2134. After the introduction of the mating connector of the corresponding latching structure, the latching structure is held by the latching hole 2132 and the convex pack 2134. The bottom wall 213 is open at the center of the end thereof with a pair of abutting arms 2133 facing the mating cavity 210 and oppositely disposed.

The metal casing 22 is further sleeved on the outer circumference of the metal inner casing 21 to enhance the strength and electrostatic shielding effect of the metal inner casing 21. The metal casing 22 is also integrally formed by stamping and bending a metal plate, and has a lower wall 221, two opposite side walls 222 extending upward from both sides of the lower wall 221, and two side walls. The upper edges of the upper ends of the 222 are joined to each other to form an upper wall 223. A protrusion 2211 is disposed on each of the two sides of the front end of the lower wall 221, and correspondingly covers the convex cover 2134 of the metal inner casing 21 after being installed. The front end of the protrusion 2211 is resisted by the introduction block 2131 to prevent the metal casing. 22 slides. A fixing hole 2212 is formed through the lower wall 221 behind the two protrusions 2211, and the fixing hole 2212 partially overlaps with the holding hole 2132 of the metal inner casing 21. A protrusion 2213 is formed on each of the two sides of the rear end of the lower wall 221, and is correspondingly held in the recess 113 of the insulative housing 1. Inside. A second punching hole 226 is stamped and formed at the center of the rear end of the upper wall 223. The second punching hole 226 extends from the two short sides thereof and is bent downward to form a second clamping leg 2261. The second clamping leg 2261 abuts against the wall of the hole at the rear end of the first punching hole 215. The second clamping leg 2261 and the first clamping leg 2151 are disposed back and forth to prevent the front and rear displacement of the metal inner casing 21 and the metal outer casing 22. The end of the upper wall 223 is bent downward to form a first soldering leg 224. The two side walls 222 are stamped in the center to form a second soldering leg 225 that extends horizontally and is bent vertically downward.

Referring to the seventh and eighth figures, the metal housing defines a plugging direction, and the fixing leg 214 is located between the first soldering leg 224 and the second soldering leg 225 in the plugging direction. The metal housing has a center line extending in a plugging direction, and the metal housing is bilaterally symmetrical with respect to a center line. The metal housing has a transverse direction perpendicular to the insertion direction, and the fixing leg 214 is located in the transverse direction of the center line side, and the fixing leg 214 is located at the first soldering leg 224 and the second soldering leg 225 between.

The assembly process of the electrical connector 100 of the present invention generally comprises: stamping and bending the conductive terminal 3 and the reinforcing plate 4, and inserting the two into the injection mold to inject the insulating body 1 to cover the conductive terminal 3 and the reinforcing plate 4. Fixed in it. Then, the metal inner plate 21 and the metal outer casing 22 are formed by integrally stamping and bending the metal plate. The rear end of the side wall 212 of the metal inner casing 21 is stamped to form a fixed leg 214. The rear end of the metal casing 22 extends horizontally and is bent downward to form a first welding leg 224 which is horizontally extended by the side walls 222 and bent downward to form a second welding leg 225. Then, the insulative housing 1 is inserted into the inner metal shell 21 from the rear to the front, and the lower bump 2150 on the inner metal shell 21 abuts the front retaining groove 111 on the insulative housing 1. Finally, the metal casing 22 is further sleeved from the back to the outer periphery of the metal inner casing 21, and the second clamping leg 2261 on the metal casing 22 and the first clamping leg 2151 on the metal inner casing 21 are mutually abutted to ensure mutual protection. The metal casing 2 is stabilized before and after.

It should be noted that the arrangement of the soldering legs on the metal inner casing 21 and the metal outer casing 22 of the electrical connector 100 of the present invention facilitates product assembly under the condition of satisfying the bonding strength, and at the same time, ensures the bending of the fixture. The accuracy of the welded foot.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or changes in accordance with the spirit of the present invention. It is covered by the following patent application.

100‧‧‧Electrical connector

21‧‧‧Metal inner shell

214‧‧‧Fixed feet

2150‧‧‧ Lower bump

2151‧‧‧First clamping feet

22‧‧‧Metal casing

2213‧‧‧Protruding

224‧‧‧First welding feet

225‧‧‧Second welding feet

Claims (9)

An electrical connector includes: an insulative housing; a plurality of conductive terminals received in the insulating body; a metal housing sleeved outside the insulating body, the metal housing defining a plugging direction, the metal housing including; a shell, the metal inner casing includes a top wall, two opposite side walls extending downward from opposite sides of the top wall, and a bottom wall opposite to the top wall, the metal inner shell rear end is stamped with a fixed leg; the metal shell The metal casing includes a lower wall, two opposite side walls extending upward from the two sides of the lower wall, and an upper wall opposite to the lower wall, the metal casing is provided with the upper wall a first soldering leg formed by bending a rear end of the wall, wherein the two sides of the wall are provided with a second soldering leg formed by stamping and bending; the fixing leg is located outside the first soldering leg, and the fixing leg is in the plugging direction The upper portion is located between the first soldering leg and the second soldering leg. The electrical connector of claim 1, wherein the bottom wall is provided at its front end edge with an outwardly turned and symmetrically disposed importing block for guiding the docking connector. The retaining structure is inserted and stuck in the metal casing. The electrical connector of claim 1, wherein the metal housing has a center line extending in a plugging direction, the metal housing being bilaterally symmetrical with respect to the center line. The electrical connector of claim 3, wherein the metal housing has a transverse direction perpendicular to the insertion direction, the metal housing is in a transverse direction of the center line side, and the fixed foot is located at Between a solder joint and a second solder joint. The electrical connector of claim 1, wherein the rear end of the top wall of the metal inner casing is open a first punching hole, the first punching hole is stamped with a pair of lower bumps at a front end thereof, the insulating body has a base portion, and a front locking groove is formed at a front end of the base portion, and the front fixing groove corresponds to the lower protruding block Embedded. The electrical connector of claim 5, wherein the first punching hole is provided with a first clamping leg extending from a transverse direction thereof and bent downward, the first clamping leg and the base portion The top back is stuck. The electrical connector of claim 5, wherein the rear end of the metal casing is provided with a second punching hole, and the second punching hole is provided with a second clamping extending from the transverse direction thereof and bent downward The second clamping leg abuts against the wall of the rear end hole of the first punching hole. A manufacturing method of an electrical connector, comprising: providing a conductive terminal; and molding an insulating body, wherein the conductive terminal is held in the insulating body; providing a metal plate, respectively stamping the metal plate into a metal inner shell and a metal outer shell, wherein the metal outer shell has a lower wall a first welding leg with a lower wall opposite to the lower wall and a side wall connecting the upper wall and the lower wall, and a rear end of the upper wall, the metal inner casing including a top wall and a downward side of the top wall Extending two opposite side walls and a bottom wall opposite to the top wall, the rear ends of the two side walls are stamped with fixing legs, the fixing legs are located on the outer side of the first welding leg; the metal inner casings are moved in the direction of the plugging The rear sleeve is sleeved outside the insulating body; and the metal shell is sleeved from the rear to the outside of the metal inner casing in the plugging direction. The manufacturing method of an electrical connector according to claim 8, wherein the electrical connector is bent at the rear end of the metal inner casing to form a fixing leg on the upper wall of the metal casing. The back end is bent and stamped to form the first soldering leg, and the second soldering leg is bent and formed on the side wall of the metal shell, and then the metal inner shell is sleeved in the plugging direction from the back to the outside of the insulating body, and finally the metal is The outer casing is sleeved from the rear to the outer side of the metal inner casing in the insertion direction to complete the assembly.