TWI594526B - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an electrical connector having an 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 grounding terminal are added to enhance the original. The transfer rate of the USB 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 aggravated, 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 resolution 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 and solves the problem of signal crosstalk between signal terminals.

In order to solve the above problems, 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 and a plurality of second terminals, the plurality of first terminals including a grounding terminal in the middle and two pairs of differential signal terminals on both sides of the grounding terminal, the metal casing including a rear wall, wherein the electrical connector is disposed behind the metal casing a metal piece between the wall and the grounding terminal, wherein the metal piece is electrically connected to the grounding terminal and the rear wall, respectively.

Compared with the prior art, the metal piece added by the electrical connector of the present invention is respectively overlapped with the rear wall and the grounding terminal, thereby enhancing the anti-EMI effect of the electrical connector.

1‧‧‧Insulating body

10‧‧‧ containment chamber

11‧‧‧ base

111‧‧‧ top

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

13132‧‧‧Department

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‧‧‧metal pieces

41‧‧‧ Body Department

411‧‧‧First arm

412‧‧‧Second arm

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.

Figure 3 is a cross-sectional view of the electrical connector of the present invention taken along line III-III of the first figure.

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

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

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

As shown in the first to third embodiments, the electrical connector 100 of the present invention includes an insulative housing 1 , a metal housing 2 covering the insulative housing 1 , and a conductive terminal 3 and a metal strip 4 received in the insulative housing 1 .

Referring to FIGS. 4 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 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, a bottom surface 1314, and a rear end surface 1315. 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. width. The main body portion 131 is provided with a retaining portion 13132 extending from the rear end of the first receiving groove 13131 at the rear end of the first receiving groove 13131 to the rear end surface 1315. The front end surface 1311 of the main body portion 131 is provided with a plurality of retaining blocks 13111 protruding forward. 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 firmly assemble the positioning seat 13 to the base 11. 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 are located at the holding block. Directly ahead of 13111, and 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 is formed by the trailing edges of the two side walls 23 and is 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, and in conjunction with the sixth figure, the conductive terminal 3 includes a plurality of first terminals 31 and a plurality of second terminals 32 spaced apart from the first terminal 31, the first The terminal 31 is embedded in the insulative housing 1 , and the first terminal 31 includes a first holding portion (not shown) received in the tongue plate 12 and a first contact portion extending from the first holding portion to extend forward. 312. The first contact portion 312 is substantially flatly exposed in the holding groove 1221. The first terminal 31 further includes a first connecting portion 313 bent downward from the end of the first holding portion (not shown) and continuing to extend, and a first soldering portion 314 extending downward from the first connecting portion 313 . The first connecting portion The 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 of the positioning seat 13 pushes the second connecting portion 323 into the receiving space 114 of the base portion 11. The second soldering portion 324 extends downwardly through the second receiving groove 1322 beyond the positioning seat 13 Bottom surface. 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 2.

Referring to the second to fifth figures, the metal piece 4 is substantially a vertical flat plate structure and is located between the ground terminal 33 and the metal casing 2, and the metal piece 4 includes a body portion 41 of a vertical flat shape. The body portion 41 includes a first elastic arm 411 at an upper end and a second elastic arm 412 at a lower end. The first elastic arm 411 extends obliquely upward from an upper end of the body portion 41, and the second elastic arm 412 is from the main body portion. The lower end of the 41 extends obliquely upward and the first elastic arm 411 and the second elastic arm 412 are respectively located on the rear side and the front side of the vertical plane where the metal piece 4 is located. The main body portion 41 is assembled from the top to the bottom to the first receiving slot 13131 of the first connecting portion 313 of the grounding terminal 33. The first elastic arm 411 passes through the retaining portion 13132 and is backward. The rear wall 21 of the metal casing 2 is elastically abutted. The second elastic arm 412 elastically abuts against the first connecting portion 313 of the grounding terminal 33.

The metal piece 4 of the electrical connector 100 of the present invention is provided with at least a first elastic arm 411 overlapping the metal outer casing 2 and a second elastic arm 421 overlapping the first connecting portion 313 of the grounding terminal 33, thereby increasing the grounding The grounding path of the terminal 33 further enhances the EMI prevention effect of the electrical connector 100 and reduces the signal crosstalk between the differential signal terminals, and the metal piece 4 has a simple structure and is easy to manufacture.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the foregoing 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 should be covered by the following patent application.

2‧‧‧Metal casing

24‧‧‧ Back wall

313‧‧‧ First connection

33‧‧‧ Grounding terminal

4‧‧‧metal pieces

411‧‧‧First arm

412‧‧‧Second arm

Claims (10)

An electrical connector includes: an insulative housing; a metal housing covering the insulative housing, the metal housing including a rear wall; and a conductive terminal received in the insulative housing, the conductive terminal including a plurality of first terminals and a plurality of a second terminal, wherein the plurality of first terminals comprise 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 provided with a metal between the rear wall of the metal casing and the grounding terminal The metal piece is electrically connected to the grounding terminal and the rear wall, respectively, and the metal piece is disposed behind the grounding terminal and located in front of the rear wall. The electrical connector of claim 1, wherein the metal piece comprises a vertical flat body portion, the upper end of the body portion is provided with a first elastic arm, and the lower end of the body portion is provided with an upward oblique extension. The second elastic arm elastically abuts against the rear wall backwardly, and the second elastic arm elastically abuts against the grounding terminal. The electrical connector of claim 2, wherein the first elastic arm extends obliquely upward from an upper end of the body portion, and the second elastic arm extends obliquely upward from a lower end of the body portion, the first elastic arm and the first elastic arm The second spring arm is located on a different side of the vertical plane of the metal sheet. The electrical connector of claim 2, wherein the first terminal comprises 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 the first soldering portion extending downward, and the second elastic arm abuts the first connecting portion of the grounding terminal. The electrical connector of claim 4, 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 upper and lower through main body portions The receiving slot is configured to receive the first connecting portion of the first terminal, wherein the width of the first receiving slot in the middle of the first receiving slot is wider than the width of the first receiving slot on both sides thereof to receive the body of the metal piece unit. The electrical connector of claim 5, wherein the first receiving slot in the middle is provided with an opening extending rearwardly through the main body of the positioning seat, and the first elastic arm extends rearward through the opening It is elastically abutted against the rear wall. The electrical connector of claim 1, wherein the metal piece is assembled from the top to the bottom of the insulating body. The electrical connector of claim 4, wherein the rear wall is provided with a mounting portion for fixing to the circuit board after extending downward. 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, the metal housing including a rear wall; and a conductive terminal received in the insulative housing, the conductive terminal including a plurality of first terminals and a plurality of a second terminal, wherein the plurality of first terminals comprise a grounding terminal; wherein the electrical connector is provided with a metal piece between the rear wall of the metal casing and the first terminal, and the metal piece and the grounding terminal respectively The back wall is electrically connected, and the metal piece is disposed behind the ground terminal and located in front of the rear wall.