TWI594519B - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an electrical connector with better anti-EMI effect.

At the end of 2008, the USB Association released the 3.0 standard USB standard. This USB 3.0 connector is based on the original USB 2.0 connector. Two pairs of differential signal terminals and one ground terminal are added to enhance the original USB. The transmission rate of the connector. The USB 3.0 connector has a transfer rate of 5G per second and can be plugged into both USB 2.0 and USB 3.0 docking connectors. However, the transmission speed of the USB 3.0 connector still cannot meet the transmission requirements of electronic devices such as Blu-ray DVD. Therefore, it is necessary to increase the transmission speed of the new generation USB. However, while increasing the speed, the signal crosstalk between the differential signal terminals is often enhanced, and the EMI prevention effect of the connector is greatly reduced, although the transmission speed is increased, but the effect is affected.

The prior art related to the present invention can be referred to an electrical connector disclosed in the Chinese Patent No. CN202797485U, which is hereby incorporated by reference. a conductive terminal in the body, the metal casing enclosing the insulative housing to form a receiving cavity, the top wall of the metal casing is provided with a resisting piece extending into the receiving cavity, and the resisting piece is overlapped with the grounding terminal, and is disposed The EMI prevention of the electrical connector and the improvement of crosstalk between the differential signal terminals are not obvious.

Therefore, it is necessary to modify existing electrical connectors to overcome the deficiencies described in the prior art.

It is an object of the present invention to provide an electrical connector that improves the anti-EMI effect.

In order to solve the above technical problem, the present invention adopts the following technical solutions: an electrical connector includes an insulative housing, a metal housing covering the insulative housing, and a conductive terminal received in the insulative housing, the conductive terminal including a plurality of first terminals, The plurality of first terminals includes a grounding terminal in the middle and two pairs of differential signal terminals on both sides of the grounding terminal, wherein the electrical connector is further provided with an auxiliary terminal, the auxiliary terminal includes a fixing terminal for fixing to the insulating body and a holding portion of the metal shell overlapping and a connecting portion overlapping the grounding terminal, wherein the connecting portion is formed by bending and extending the end of the holding portion downward.

Compared with the prior art, the auxiliary terminals of the electrical connector of the present invention are respectively overlapped with the metal casing and the grounding terminal, thereby enhancing the anti-EMI effect of the electrical connector and reducing the crosstalk between the differential signal terminals.

1‧‧‧Insulating body

10‧‧‧ containment chamber

11‧‧‧ base

111‧‧‧ top

1111‧‧‧ Groove

1112‧‧‧ card slot

112‧‧‧ bottom

1121‧‧‧Bumps

113‧‧‧ side

1131‧‧‧ rib

114‧‧‧ accommodating space

12‧‧ ‧ tongue

121‧‧‧ upper surface

122‧‧‧ lower surface

1221‧‧‧ holding slot

1222‧‧‧ receiving trough

13‧‧‧ Positioning Block

131‧‧‧ Main body

1311‧‧‧ front end

13111‧‧‧Retention block

1312‧‧‧ side

1313‧‧‧Top

13131‧‧‧First storage trough

1314‧‧‧ bottom

132‧‧‧support plate

1321‧‧‧through hole

1322‧‧‧Second holding trough

2‧‧‧Metal casing

21‧‧‧ top wall

211‧‧‧First elastic arm

212‧‧‧Resistance film

22‧‧‧ bottom wall

221‧‧‧Second elastic arm

23‧‧‧ side wall

231‧‧‧ Third elastic arm

232‧‧‧Pre-installation department

233‧‧‧Solid slot

24‧‧‧ Back wall

241‧‧‧ Rear Installation Department

3‧‧‧Electrical terminals

31‧‧‧First terminal

312‧‧‧ First contact

313‧‧‧ First connection

314‧‧‧First Welding Department

32‧‧‧second terminal

321‧‧‧Second Holding Department

322‧‧‧Second contact

323‧‧‧Second connection

324‧‧‧Second welding department

33‧‧‧ Grounding terminal

34‧‧‧Differential signal terminal

4‧‧‧Auxiliary terminal

41‧‧‧ Holding Department

411‧‧‧First shrapnel

412‧‧‧Cars Department

42‧‧‧Connecting Department

421‧‧‧Second shrapnel

100‧‧‧Electrical connector

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

The second figure is an exploded view of the electrical connector of the present invention.

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

Figure 4 is a cross-sectional view of the electrical connector of the present invention taken along line IV-IV of the first figure.

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

Figure 6 is a perspective exploded view of another angle of the electrical connector of the present invention.

Referring to the first to third figures, the electrical connector 100 of the present invention includes an insulative housing 1 , a metal outer casing 2 covering the insulative housing 1 , and a conductive terminal 3 and an auxiliary terminal 4 received in the insulative housing 1 .

Referring to FIGS. 5 to 6 , the insulative housing 1 includes a base portion 11 , a tongue plate 12 extending forward from the base portion 11 , and a positioning seat 13 assembled from the bottom to the rear of the base portion 11 . The base portion 11 includes a top portion 111, a bottom portion 112 opposite to the top portion 111, two side portions 113 connecting the top portion 111 and the bottom portion 112, and a receiving space 114 on the rear side of the base portion 11. The base portion 11 is provided with a recess 1111 which is recessed downward from the middle of the top portion 111 but does not penetrate the top portion 111. The top portion 111 is further provided with a card which continues to dent in the width direction of the base portion 11 from both sides of the recess 1111. Holding slot 1112. The base 11 is further provided with a projection 1121 protruding downward from the bottom portion 112 thereof. The two side portions 113 are provided with outwardly protruding ribs 1131. The tongue plate 12 includes an upper surface 121 and a lower surface 122 opposite to the upper surface 121. The lower surface 122 is provided with a plurality of holding grooves 1221 arranged side by side at the front end and a plurality of receiving grooves 1222 located behind the holding groove 1221.

The positioning seat 13 includes a main body portion 131 and a support plate 132 extending horizontally from the bottom end of the main body portion 131. The main body portion 131 includes a front end surface 1311, two side surfaces 1312, a top surface 1313, and a bottom surface 1314. The top surface 1313 of the main body portion 131 is provided with a first receiving groove 13131 extending through the main body portion 131. The first receiving groove 13131 in the middle is wider than the first receiving groove 13131 on the two sides thereof in the front-rear direction. The first receiving groove 13131 in the middle is located in the same vertical plane as the groove 1111 of the base 11. The front end surface 1311 of the main body portion 131 is provided with a plurality of holding blocks 13111 protruding forwardly, and the holding block 13111 extends downward from the top surface 1313 of the main body portion 131 to the upper end of the support plate 132. The support plate 132 is provided with a through hole 1321 penetrating up and down to cooperate with the protrusion 1121 on the base 11 to securely assemble the positioning seat 13 to the base 11. Said The support plate 132 is further provided with a plurality of second receiving slots 1322. The second receiving slots 1322 are located at the rear side of the through hole 1321 and directly in front of the holding block 13111, and are arranged in a row.

Referring to the first to fourth figures, the metal casing 2 is integrally formed by stamping and bending a metal material, and the metal casing 2 surrounds the tongue plate 12 to form a receiving cavity 10. The metal casing 2 includes a top wall 21, a bottom wall 22 opposite to the top wall 21, and two side walls 23 and a rear wall 24 connecting the top wall 21 and the bottom wall 22. The rear wall 24 extends from the two side walls 23 and is formed to be bent horizontally toward each other. The top wall 21 and the bottom wall 22 of the metal casing 2 are respectively provided with a plurality of first elastic arms 211 and second elastic arms 221 extending into the receiving cavity 10. Each of the side walls 23 is provided with a third elastic arm 231 extending into the receiving cavity 10 . The top wall 21 is additionally provided with a resisting piece 212 extending into the receiving cavity. The resisting piece 212 is located between the two first elastic arms 211 for reinforcing the mating connector (not shown). Holding power. The rear side of the two side walls 23 is provided with a downwardly extending front mounting portion 232, and the rear wall 24 is provided with a mounting portion 241 extending downwardly. The front mounting portion 232 and the rear mounting portion 241 cooperate with each other to form an electrical connector. 100 is firmly fixed to the circuit board (not shown). The two side walls 23 are provided with a strip-shaped holding groove 233 adjacent to the rear wall 24 for holding the rib 1131 on the base 11 to reinforce the fixing function of the insulating body 1 and the metal casing 2.

Referring to the second to fourth figures, the conductive terminal 3 includes a plurality of first terminals 31 and a plurality of second terminals 32 spaced apart from the first terminals 31. The first terminals 31 are embedded in the insulation. In the main body 1 , the first terminal 31 includes a first holding portion (not shown) received in the tongue plate 12 and a first contact portion 312 extending from the first holding portion to extend forward, the first contact portion The 312 is exposed in a substantially flat shape to the holding groove 1221. The first terminal 31 further includes an end from a first holding portion (not shown) The first connecting portion 313 that is bent downward and continues to extend and the first welded portion 314 that continues downward from the first connecting portion 313. The first connecting portion 313 is received in the first receiving slot 13131 , and the first soldering portion 314 extends downward beyond the positioning seat 13 . The second terminal 32 is assembled from the rear to the front of the insulative housing 1 , and includes a second holding portion 321 received in the receiving groove 1222 and a second contact portion 322 extending forward from the second holding portion 321 . a second connecting portion 323 bent downward from the end of the second holding portion 321 and a second welded portion 324 extending downward from the second connecting portion 323. The holding block 13111 pushes the second connecting portion 323 into the receiving space 114 of the base portion 11 , and the second soldering portion 324 extends downward through the second receiving groove 1322 beyond the bottom surface of the positioning seat 13 . The first terminal 31 is five, and includes a grounding terminal 33 located in the middle and two pairs of differential signal terminals 34 respectively located at two sides of the grounding terminal 33. The first connecting portion 313 of the grounding terminal 33 is wider than the grounding terminal 33. The width of the first connection portion 313 of the differential signal terminal 34 is offset from the first connection portion 313 of the pair of differential signal terminals 34 near the ground terminal 33 with respect to the corresponding first solder portion 314 away from the ground terminal 33. The distance between the differential signal terminal 34 and the ground terminal 33 is increased to reduce the signal crosstalk between the conductive terminals 3.

Referring to the second to fifth figures, the auxiliary terminal 4 is substantially in the "L" shape, which is integrally stamped and formed from a metal piece. The auxiliary terminal 4 includes a holding portion 41 that is retained in the recess 1111 of the base portion 11 and a connecting portion 42 that is bent downward from the end of the holding portion 41. The connecting portion 42 is located at the rear side of the first and second connecting portions 312 and 323 of the first and second terminals 31 and 32, and the holding portion 41 is located at the first holding portion of the first and second terminals 31 and 32 and The second holding portion 321 is on the upper side. The connecting portion 42 is received in the positioning seat 13 . The first connecting portion 313 of the auxiliary terminal 4 and the first connecting portion 313 of the grounding terminal 33 are received in the same first receiving groove 13131. The holding portion 41 is provided with a tear-formed first elastic piece 411, the first elastic piece 411 elastically abuts against the top wall 21 of the metal casing 2 . The connecting portion 42 is provided with a second elastic piece 421 which is formed by tearing, and the second elastic piece 421 is elastically abutted against the first connecting portion 313 of the grounding terminal 33. The holding portion 41 is further provided with a holding portion 412 protruding from the two sides thereof. The holding portion 41 is received in the groove 1111 of the base portion 11 , and the holding portion 412 is locked in the holding groove 1112 . It is used to limit the displacement of the auxiliary terminal 4 in the front-rear direction. After the metal casing 2 is assembled to the insulative housing 1, the first elastic piece 411 elastically abuts against the top wall 21 of the metal casing 2, and the reaction force applied by the metal casing 2 to the holding portion 41 causes the holding portion 41 to be in close contact with the holding portion 41. The bottom wall of the recess 1111 is defined to limit the up and down direction of the holding portion 41 to prevent the auxiliary terminal 4 from being displaced and falling off.

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.

2‧‧‧Metal casing

21‧‧‧ top wall

22‧‧‧ bottom wall

3‧‧‧Electrical terminals

313‧‧‧ First connection

33‧‧‧ Grounding terminal

41‧‧‧ Holding Department

411‧‧‧First shrapnel

42‧‧‧Connecting Department

421‧‧‧Second shrapnel

Claims (9)

An electrical connector includes: an insulative housing; a metal housing covering the insulative housing; a conductive terminal received in the insulative housing, the conductive terminal includes a plurality of first terminals, and the plurality of first terminals includes a middle portion a grounding terminal and two pairs of differential signal terminals on both sides of the grounding terminal, the first terminal includes a first holding portion received in the insulating body, a first connecting portion bent downward from the end of the first holding portion, and The first connecting portion continues to extend downwardly from the first soldering portion; wherein the electrical connector further includes an auxiliary terminal, the auxiliary terminal includes a holding portion for fixing to the insulating body and overlapping with the metal housing, and the grounding terminal a connecting portion, the connecting portion is formed by bending a distal end of the holding portion, the connecting portion of the auxiliary terminal is located at a rear side of the first connecting portion of the first terminal, and the auxiliary terminal holding portion is located at the first terminal The upper side of the first holding portion. The electrical connector of claim 1, wherein the retaining portion is provided with a first elastic piece, and the first elastic piece is elastically abutted against the metal outer casing. The electrical connector of claim 2, wherein the connecting portion is provided with a second elastic piece, and the second elastic piece is elastically abutted against the grounding terminal. The electrical connector of claim 1, wherein the retaining portion further has a retaining portion that protrudes outwardly from the two sides thereof, the insulating body includes a base, and the top of the base is provided with a downward recess But the recess does not extend through the base and the retaining slot extending from the sides of the recess along the width direction of the base, the retaining portion of the auxiliary terminal is retained in the recess, and the retaining portion is retained by the card Hold in the slot. The electrical connector of claim 3, wherein the second elastic piece abuts the first connecting portion of the grounding terminal. The electrical connector of claim 5, wherein the insulative housing further comprises a positioning seat, the positioning seat comprises a main body portion, and the positioning seat is provided with a plurality of first receiving slots extending through the main body portion. The first connecting portion for receiving the first terminal, wherein the width of the first receiving groove in the middle is wider in the front-rear direction than the width of the first receiving groove on both sides thereof, and the connecting portion of the auxiliary terminal is received in the middle In the first receiving slot. The electrical connector of claim 3, wherein the auxiliary terminal is assembled from the top to the bottom to the insulative housing. The electrical connector of claim 5, wherein the first connection portion of the ground terminal has a width wider than the first connection portion of the differential signal terminal, and the first connection of the differential signal terminal on both sides of the ground terminal The portion is offset from one side away from the ground terminal with respect to the first welded portion thereof. An electrical connector includes: an insulative housing; a metal housing covering the insulative housing; a conductive terminal received in the insulative housing, the conductive terminal includes a plurality of first terminals, and the plurality of first terminals includes a grounding terminal, The first terminal includes a first holding portion received in the insulating body, a first connecting portion bent downward from the end of the first holding portion, and a first welded portion extending downward from the first connecting portion; The electrical connector is further provided with an auxiliary terminal, the auxiliary terminal includes a holding portion for fixing to the insulating body and overlapping with the metal outer casing, and a connecting portion overlapping the grounding terminal, the connecting portion is ended by the end of the holding portion The lower bending is formed by extending, the connecting portion of the auxiliary terminal is located at a rear side of the first connecting portion of the first terminal, and the auxiliary terminal holding portion is located at an upper side of the first holding portion of the first terminal.