CN112332144B

CN112332144B - Electrical connector

Info

Publication number: CN112332144B
Application number: CN201910715305.3A
Authority: CN
Inventors: 黄耀諆; 何文; 曾锋
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2022-06-24
Anticipated expiration: 2039-08-05
Also published as: CN112332144A

Abstract

An electric connector comprises an insulating body, a plurality of conductive terminals fixed on the insulating body and a shielding shell covering the insulating body, wherein the conductive terminals comprise fixing parts fixed on the insulating body, contact parts formed by forward extension of the fixing parts and welding tail parts extending out of the insulating body from the fixing parts, the shielding shell is provided with an upper wall, a lower wall and a pair of side walls connecting the upper wall and the lower wall, the upper wall, the lower wall and the pair of side walls are surrounded to form a containing cavity containing the insulating body, the welding tail parts are positioned on the rear side of the rear end edge of the lower wall, the rear end edge of the lower wall is forwards concavely provided with a plurality of grooves corresponding to the welding tail parts one by one, and a separation block is formed between every two adjacent grooves. The rear end edge of the lower wall of the shielding shell is provided with a groove in a forward concave mode at a position corresponding to the welding tail part of each conductive terminal, so that the size of the electric connector in the front and rear directions can be effectively reduced, and the development trend of miniaturization of the electric connector is met.

Description

Electrical connector

[ technical field ] A

The present invention relates to an electrical connector, and more particularly, to an electrical connector capable of being inserted in a forward direction and a reverse direction.

[ background ] A method for producing a semiconductor device

Taiwan patent No. TWM574772U discloses an electrical connector, which includes an insulative housing, a plurality of conductive terminals fixed on the insulative housing, and a shielding shell covering the insulative housing. The insulating body comprises a base and a tongue plate extending forwards from the base, and the conductive terminal comprises a fixing part fixed on the base, a contact part extending forwards from the fixing part and exposed on a butt joint surface arranged on the tongue plate, and a welding part extending backwards from the fixing part and extending out of the base. Then, since the base extends rearward beyond the lower wall of the shielding shell and the soldering portion further extends rearward beyond the rear end surface of the base, the overall size of the electrical connector in the front-rear direction is increased, which is not in line with the trend of miniaturization of the electrical connector.

Accordingly, there is a need for an improved electrical connector that overcomes the above-mentioned deficiencies.

[ summary of the invention ]

The invention aims to provide an electric connector which occupies a small area in the front-back direction.

The purpose of the invention is realized by the following technical scheme one: an electric connector comprises an insulating body, a plurality of conductive terminals fixed on the insulating body and a shielding shell covering the insulating body, wherein the conductive terminals comprise a fixing part fixed on the insulating body, a contact part formed by extending forwards from the fixing part and a welding tail part extending backwards from the fixing part to the insulating body, the shielding shell is provided with an upper wall, a lower wall and a pair of side walls connecting the upper wall and the lower wall, the upper wall, the lower wall and the pair of side walls enclose a containing cavity for containing the insulating body, the welding tail part is positioned on the rear side of the rear end edge of the lower wall, the rear end edge of the lower wall is recessed forwards to form a plurality of grooves corresponding to the welding tail part one by one, and a separation block is formed between every two adjacent grooves.

Further, the shielding shell is a metal shell made of a metal material.

Furthermore, the welding tail part comprises an upright part formed by bending downwards from the rear end of the holding part and a horizontal part formed by extending backwards from the upright part and used for welding, and the grooves are in one-to-one correspondence with the upright parts respectively.

Further, the front surface of the upright part is approximately flush with the rear end edge of the lower wall, the groove gives way to the upright part, and the transverse width of the groove is larger than that of the corresponding upright part.

Further, the inner wall of the lower wall integrally protrudes toward the accommodating cavity to form a first stopping portion for stopping the insulating body to limit the forward movement of the insulating body, and the separating block is located at the rear end face of the first stopping portion.

Furthermore, the inner wall of the upper wall integrally protrudes towards the accommodating cavity to form a second blocking part which vertically corresponds to the first blocking part and blocks the insulating body to limit the forward movement of the insulating body, a through groove is formed between the first blocking part and the second blocking part at intervals, the accommodating cavity is divided into a butt cavity at the front end and an assembly cavity at the rear end by the first blocking part and the second blocking part, and the insulating body comprises a base which is accommodated in the assembly cavity, forwards abuts against the first blocking part and the second blocking part, and a tongue plate which extends forwards from the base through the through groove and is located in the butt cavity.

Furthermore, the first stopping part is provided with a first limiting groove in the middle of the transverse direction perpendicular to the front-back direction and the up-down direction, the second stopping part is provided with a second limiting groove in the middle of the transverse direction perpendicular to the front-back direction and the up-down direction, and the base comprises a propping part propping against the rear end faces of the first stopping part and the second stopping part forwards, a first protruding part protruding forwards from the propping part and embedded in the through groove, and a pair of second protruding parts embedded in the first limiting groove and the second limiting groove.

Furthermore, the first blocking part and the second blocking part respectively protrude into the through groove to form a plurality of protruding ribs arranged at intervals.

Furthermore, the conductive terminals comprise an upper row of conductive terminals and a lower row of conductive terminals, and the solder tails of the upper row of conductive terminals and the lower row of conductive terminals are arranged in a row.

Further, a recessed portion extending in the transverse direction is formed at a position adjacent to the solder tail portion of the shielding shell in an upward concave manner, a protruding block extending in the transverse direction is formed at the front end of the recessed portion of the lower wall, and a nickel layer is plated on the surface of the protruding block.

Compared with the prior art, the electric connector is characterized in that the rear end edge of the lower wall of the shielding shell is forwardly recessed at the position corresponding to the welding tail part of each conductive terminal to form a groove, so that the welding tail part is forwardly limited and contracted in the front-rear direction, the size of the electric connector in the front-rear direction can be effectively reduced, and the development trend of miniaturization of the electric connector at present is met.

[ description of the drawings ]

Fig. 1 is a perspective view of an electrical connector of the present invention mounted to a circuit board.

Fig. 2 is a perspective view of fig. 1 from another perspective.

Fig. 3 is an exploded perspective view of the electrical connector of the present invention.

Fig. 4 is an exploded perspective view of fig. 3 from another perspective.

Fig. 5 is a bottom view of the electrical connector of the present invention.

Fig. 6 is a cross-sectional view taken along line a-a of fig. 1.

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

[ detailed description ] embodiments

Referring to fig. 1 to 6, the electrical connector 100 of the present invention is preferably a USB Type C connector for positive and negative insertion, but is not limited thereto, and may be other types of electrical connectors. The electrical connector 100 is mounted on a circuit board 200, and includes an insulative housing 1, a plurality of conductive terminals 2 fixed on the insulative housing 1, and a shielding shell 3 covering the insulative housing 1. The conductive terminal 2 includes a holding portion 21 held by the insulative housing 1, a contact portion 22 extending forward from the holding portion 21, and a solder tail portion 23 extending backward from the holding portion 21 to the insulative housing 1. In the present invention, the shielding shell 3 is preferably a metal shell made of metal powder metallurgy, but the metal shell may also be formed by stamping and bending a metal material, and the invention is not limited thereto.

The insulation body 1 of the electrical connector 100 of the present invention specifically includes a base 11 and a tongue plate 12 extending forward from the base 11, the base 11 is fixed in the accommodating cavity 30 of the shielding shell 3, and the tongue plate 12 and the shielding shell 3 together form a mating cavity 301 for a mating connector (not shown) to be plugged. The conductive terminals 2 are arranged in two lower rows and two lower rows, the holding parts 21 of the conductive terminals 2 are held on the base 11, the contact parts 22 are exposed on the butt joint surface 120 arranged on the tongue plate 12, the solder tail parts 23 extend backwards out of the base 11, and the solder tail parts 23 of the two rows of conductive terminals 2 are arranged in one row. The electrical connector 100 further includes a middle shielding plate 4 disposed between the two rows of conductive terminals, the middle shielding plate 4 is used for shielding signal interference between the two rows of conductive terminals 2, and the middle shielding plate 4 has a locking side edge 41 exposed at two sides of the tongue plate 12 for avoiding excessive wear of the side surface of the tongue plate 12. The housing 3 has an upper wall 31, a lower wall 32 and a pair of side walls 33 connecting the upper wall 31 and the lower wall 32, and the upper wall 31, the lower wall 32 and the pair of side walls 33 are enclosed to form the receiving cavity 30. Generally speaking, a certain distance is required between the solder tail portions 23 of the conductive terminals 2 and the lower wall 33 of the shielding shell 3 to prevent abnormal voltage resistance of the electrical connector, in order to make the electrical connector 100 more compact, the solder tail portions 23 are located on the rear side of the rear end edge of the lower wall 32, the rear end edge of the lower wall 32 is recessed forward to form a plurality of grooves 321 corresponding to the solder tail portions 23 one by one, a separation block 322 is formed between adjacent grooves 321, the grooves 321 are configured to yield the solder tail portions 23 of the conductive terminals 2 in the front-rear direction, by providing the recess 321 corresponding to the solder tail portion 23, the solder tail portion 23 can have a good pressure resistance in a front position, therefore, the size of the electrical connector 100 in the front-back direction can be effectively reduced, and the trend of miniaturization of the electrical connector is met.

The welding tail portion 23 specifically includes an upright portion 231 bent downward from the rear end of the holding portion 21 and a horizontal portion 232 extending rearward from the upright portion 231 for welding, the plurality of grooves 321 respectively correspond to the plurality of upright portions 231 one by one, the lateral width of each groove 321 is greater than the lateral width of the corresponding upright portion 231, the front surface of each upright portion 231 is substantially flush with the rear end edge of the lower wall 32, and the grooves 321 give way to the upright portions 231, that is, the front surface of each upright portion 231 is substantially flush with the rear end surface of the corresponding separating block 322, so that the upright portions 231 can be disposed forward, thereby effectively reducing the size of the electrical connector 100 in the front-rear direction.

As shown in fig. 4, the inner wall of the lower wall 32 integrally protrudes into the accommodating cavity 30 to form a first stopping portion 323 for stopping the insulating body 1 to limit the forward movement of the insulating body 1, and the inner wall of the upper wall 31 integrally protrudes into the accommodating cavity 30 to form a second stopping portion 324 for stopping the insulating body 1 to limit the forward movement of the insulating body 1, wherein the second stopping portion is vertically opposite to the first stopping portion 323. A through groove 325 is formed between the first stopping portion 323 and the second stopping portion 324 at an interval, and the accommodating cavity 30 is partitioned into the docking cavity 301 at the front end and the assembling cavity 302 at the rear end by the first stopping portion 323 and the second stopping portion 324. The base 11 is accommodated in the assembly cavity 302 and abuts against the first stopping portion 323 and the second stopping portion 324 forward, and the tongue plate 12 passes through the through groove 325 forward and is located in the docking cavity 301. In order to effectively limit the circumferential movement of the insulating body 1, the first stopping portion 323 is provided with a first limiting groove 3231 at the middle of the transverse direction perpendicular to the front-back and up-down directions, the second stopping portion 324 is provided with a second limiting groove 3241 at the middle of the transverse direction perpendicular to the front-back and up-down directions, and the base 11 includes an abutting portion 111 abutting against the rear end surfaces of the first stopping portion 323 and the second stopping portion 324, a first protruding portion 112 embedded in the through groove 325 and formed by protruding forwards from the abutting portion, and a pair of second protruding portions 113 embedded in the first limiting groove 3231 and the second limiting groove 3241. The first protruding portion 112 is substantially a rectangular protrusion extending along the transverse direction, and the pair of second protruding portions 113 are respectively located at the upper and lower sides of the first protruding portion 112 and form a cross-shaped structure with the first protruding portion 112. In order to effectively stabilize the insulation body 1, the first blocking portion 323 and the second blocking portion 324 respectively protrude into the through groove 325 to form a plurality of protruding ribs 326 arranged at intervals, and after the tongue plate 12 passes through the through groove 325, the protruding ribs 326 abut against the outer peripheral surface of the second protrusion 113 of the base 11, thereby effectively clamping the base 11 to prevent the insulation body 1 from moving backwards. Of course, the first stopping portion 323 and the second stopping portion 324 may also protrude into the first limiting groove 3231 and the second limiting groove 3241 respectively to form the protruding rib 326 to abut against the outer peripheral surfaces of the pair of second protruding portions 113. In addition, the separating block 322 is located at the rear end surface of the first stop portion 323, and the lower end edge of the abutting portion 111 of the base 11 abuts against the upper surface of the separating block 322.

The lower wall 32 of the shielding shell 3 is recessed upwards to form a recessed portion 327 extending along the transverse direction at a position adjacent to the solder tail portion 23, and the recessed portion 327 is configured to prevent solder from climbing from the upright portion 231 to conduct a short circuit with the lower wall 32 when the horizontal portion 232 of the solder tail portion 23 is soldered. Preferably, the recess 327 may be further covered with a polyimide film (not shown) or other insulating material to further prevent the solder from climbing into the recess 327 to cause a short circuit. In addition, a pair of side walls 33 of the shielding shell 3 respectively extend downward to form solder fillets 331 located at two lateral sides of the row of solder tail portions 23, the solder fillets 331 are soldered to the circuit board, in addition, a protrusion 328 extending in the lateral direction is formed at the front end of the recessed portion 327 of the lower wall 32 of the shielding shell 3, and a nickel layer is plated on the lower surface of the protrusion 328 for firmly soldering the shielding shell 3 to the circuit board 200.

The above description is only a part of the embodiments of the present invention, and not all embodiments, and any equivalent variations of the technical solutions of the present invention, which are made by those skilled in the art through reading the present specification, are covered by the claims of the present invention.

Claims

1. An electric connector comprises an insulating body, a plurality of conductive terminals fixed on the insulating body and a shielding shell covering the insulating body, wherein the conductive terminals comprise a fixing part fixed on the insulating body, a contact part formed by extending forwards from the fixing part and a welding tail part extending backwards from the fixing part to the insulating body, the shielding shell is provided with an upper wall, a lower wall and a pair of side walls connecting the upper wall and the lower wall, the upper wall, the lower wall and the pair of side walls are surrounded to form a containing cavity containing the insulating body, and the welding tail part is positioned at the rear side of the rear end edge of the lower wall, and the electric connector is characterized in that: the rear end edge of the lower wall is recessed forwards to form a plurality of grooves which are respectively in one-to-one correspondence with the welding tail parts, a separation block is formed between every two adjacent grooves, the inner wall of the upper wall and/or the inner wall of the lower wall of the shielding shell integrally protrudes towards the accommodating cavity to form a stopping part for stopping the insulating body so as to limit the forward movement of the insulating body, the separation block is located on the rear side of the stopping part, and the separation block does not exceed the rear end face of the upper wall.

2. The electrical connector of claim 1, wherein: the shielding shell is a metal shell made of a metal material.

3. The electrical connector of claim 2, wherein: the welding tail part comprises an upright part formed by bending downwards from the rear end of the holding part and a horizontal part formed by extending backwards from the upright part and used for welding, and the grooves are respectively in one-to-one correspondence with the upright parts.

4. The electrical connector of claim 3, wherein: the front surface of the upright part is approximately flush with the rear end edge of the lower wall, the groove gives way to the upright part, and the transverse width of the groove is larger than that of the corresponding upright part.

5. The electrical connector of claim 2, wherein: the inner wall of the lower wall integrally protrudes towards the accommodating cavity to form a first stopping part for stopping the insulating body so as to limit the forward movement of the insulating body, and the separating block is located on the rear end face of the first stopping part.

6. The electrical connector of claim 5, wherein: the inner wall of the upper wall integrally protrudes towards the accommodating cavity to form a second blocking part which is vertically corresponding to the first blocking part and used for blocking the insulating body to limit the forward movement of the insulating body, a through groove is formed between the first blocking part and the second blocking part at intervals, the accommodating cavity is divided into a butt joint cavity located at the front end and an assembly cavity located at the rear end by the first blocking part and the second blocking part, and the insulating body comprises a base which is accommodated in the assembly cavity and forwards abutted against the first blocking part and the second blocking part and a tongue plate which extends forwards from the base and extends through the through groove and is located in the butt joint cavity.

7. The electrical connector of claim 6, wherein: the base comprises a supporting part, a first protruding part and a pair of second protruding parts, wherein the supporting part is forwards supported against the rear end faces of the first stopping part and the second stopping part, the first protruding part is formed by protruding the supporting part forwards and is embedded in the through groove, and the pair of second protruding parts are embedded in the first limiting groove and the second limiting groove.

8. The electrical connector of claim 6, wherein: the first blocking part and the second blocking part respectively extend towards the inside of the through groove to form a plurality of convex ribs arranged at intervals.

9. The electrical connector of claim 1, wherein: the conductive terminals comprise an upper row of conductive terminals and a lower row of conductive terminals, and the welding tails of the upper row of conductive terminals and the lower row of conductive terminals are arranged in a row.

10. The electrical connector of claim 1, wherein: the lower wall of the shielding shell is provided with a concave part which is upwards concave at the position adjacent to the welding tail part and extends along the transverse direction, a lug which extends along the transverse direction is formed at the front end of the concave part of the lower wall, and the surface of the lug is plated with a nickel layer.