TWM497371U - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an electrical connector having a large number of terminals and capable of transmitting data at high speed.

The specification of the USB Type-C new connector was released on August 11, 2014. The Type-C connector is based on USB 3.1 and USB 2.0 technology. The USB Type-C is no longer directional except the socket interface. That is, the plug connector is inserted into the socket connector in both directions, and also supports USB 3.1 data transmission speed of 10 Gbit/s. According to the USB Type-C manual, usually the electrical connector includes a terminal block and is disposed at the terminal block. The upper and lower rows of conductive terminals include a ground terminal, and a differential signal terminal (TX, RX Pairs) for transmitting and receiving data at a high speed adjacent to the ground terminal. From the currently disclosed USB Type-C connector specification or other related information, the two rows of conductive terminals are independent of each other and are not in contact with each other.

In response to market demand and adapting to the development direction of the industry, we actively develop USB Type-C connectors. During the high-frequency analysis during the development process, we found that the resonant frequency of the connector frequency domain parameters is over-specified and used to transmit and receive data. The crosstalk of the signal terminals is severe, which will reduce the data transmission speed.

Therefore, in view of the above technical problems, it is necessary to provide an electrical connector having an improved structure to overcome the above drawbacks.

The main purpose of this creation is to provide an electrical connector that improves the resonant point of the connector's frequency domain parameters and the crosstalk of the differential signal terminals.

In order to achieve the foregoing objectives, the present invention adopts the following technical solution: an electrical connector for fixing on a circuit board, which can be docked with a pair of connector connectors, including a terminal block and disposed above and below the terminal block a conductive terminal, each of the conductive terminals includes a contact portion that is butted to the mating connector, the conductive terminal includes a plurality of ground terminals, each of the ground terminals has a free end of the contact portion, and the rear end is a soldering leg, the soldering leg of the grounding terminal is inserted and fixed on the circuit board and electrically connected with a grounding end disposed on the circuit board, and the grounding terminal corresponding to the upper and lower rows The free ends of the contacts are electrically connected to each other such that the ground terminals located in the upper row are electrically connected in parallel with the ground terminals in the corresponding row of the lower row.

Compared with the prior art, the front free ends of the corresponding ground terminals of the upper and lower rows of the present electrical connector are connected to the shielding plate by direct mechanical contact or both to the shielding plate, so that the upper and lower corresponding ground terminals are mounted on the connector. Electrical parallel connection can be formed on the circuit board. This arrangement can improve the resonance point of the frequency domain parameter of the connector, especially the crosstalk of the differential signal terminal located beside the ground terminal.

100‧‧‧Electrical connector

1‧‧‧ terminal block

101‧‧‧ docking chamber

102‧‧‧Connecting tongue

103‧‧‧ Body Department

104‧‧‧Shielding board

1041‧‧‧Bumps

1042‧‧‧Contact area

1043‧‧‧ gap

105‧‧‧Steps

106‧‧‧ Grounding parts

1060‧‧‧ Grounding Department

1061‧‧‧Contacts

107‧‧‧Upper insulation

108‧‧‧lower insulation

109‧‧‧Internal Department

11‧‧‧Upper terminal receiving slot

111‧‧‧through hole

112‧‧‧ channel

12‧‧‧ Lower terminal receiving slot

121‧‧‧through hole

122‧‧‧ channel

2‧‧‧Upper row of conductive terminals

200‧‧‧ boards

201‧‧‧Contacts

202‧‧‧Intermediate

203‧‧‧welding feet

21‧‧‧ Grounding terminal

211‧‧‧First bend

212‧‧‧First Extension

213‧‧ Third extension

242‧‧‧Extension

22‧‧‧Differential signal terminal

23‧‧‧Differential signal terminal

24‧‧‧Power terminal

241‧‧‧Bend

3‧‧‧Lower row of conductive terminals

301‧‧‧Contacts

302‧‧‧Intermediate

303‧‧‧ soldering feet

31‧‧‧ Grounding terminal

311‧‧‧The second bend

312‧‧‧Second extension

313‧‧‧ Fourth Extension

32‧‧‧Differential signal terminal

33‧‧‧Differential signal terminal

34‧‧‧Power terminal

341‧‧‧Bend

342‧‧‧Extension

4‧‧‧Metal housing

41‧‧‧Shrap

42‧‧‧ ribs

5‧‧‧metal cover

51‧‧‧Installation feet

The first figure is a three-dimensional combination diagram of the first preferred embodiment of the present invention, the electrical connector and the printed circuit board;

The second drawing is an exploded perspective view of the electrical connector of the first preferred embodiment of the present invention;

The third drawing is an exploded perspective view of the terminal block of the first preferred embodiment of the present invention;

The fourth figure is another angle view of the third figure;

Figure 5 is a partially exploded perspective view of the electrical connector of the first preferred embodiment of the present invention;

The sixth figure is another angle view of the fifth figure;

Figure 7 is a perspective view of the conductive terminal of the first preferred embodiment of the present invention;

Figure 8 is a cross-sectional view of the first figure taken along the line VIII-VIII; and

The ninth drawing is a cross-sectional view of the first figure taken along the dotted line IX-IX.

Referring to the first to second and fourth figures, the present electrical connector 100 is fixed to a circuit board 200 and can be docked with a pair of connectors (not shown), including terminals. The seat 1 is disposed on the terminal block 1 and has a conductive terminal 2 and a lower row of conductive terminals 3, a metal case 4 surrounding the outside of the terminal block 1, and a metal cover 5 fixed to the outside of the metal case 4.

Referring to the third to seventh figures, each of the terminals of the upper row of conductive terminals 2 has a substantially similar structure, and includes a contact portion 201, an intermediate portion 202, and a soldering leg 203 that are butted against the mating connector (fifth Similarly, the structure of each of the lower row of conductive terminals 3 is also substantially similar, and includes a contact portion 301, an intermediate portion 302, and a soldering leg 303 that are butted against the mating connector (fifth figure Show). The upper row of conductive terminals 2 includes a grounding terminal 21 and a differential signal terminal 23 disposed between the pair of differential signal terminals 22 for high speed transmission of data and a pair of high speed receiving data. The lower row of conductive terminals 3 includes a ground terminal 31 and a differential signal terminal 33 disposed adjacent to the ground terminal 31 for transmitting data at a high speed to the differential signal terminal 32 and for receiving data at a high speed. The ground terminal 21 located in the upper row is electrically connected in parallel with the ground terminal 31 located in the corresponding row of the lower row. The front end of each of the grounding terminals 21, 31 is a free end of the contact portions 201, 301, and the rear end is a soldering leg 203, 303. The soldering leg 203, 303 of the grounding terminal is inserted and fixed on the circuit board 200. An electrical connection is made to the ground terminal on the circuit board 200, which is typically a grounded solder joint on the circuit board. Referring to the seventh figure, the free end of the contact portion 201 of the grounding terminal 21 of the upper row is provided with a first bent portion 211 formed by bending downwardly at an angle and extending horizontally from the first bent portion 211. The first extending portion 212, the free end of the contact portion of the grounding terminal 31 of the corresponding row of the lower row is provided with a second bending portion 311 formed by bending upward at an angle and extending horizontally from the second bending portion 311 The second extension portion 312.

Referring to the first to second figures, the terminal block 1 includes a mating tongue 102 on the front side and a body portion 103 on the rear side. The mating tongue 102 has opposite surfaces, and the two rows of conductive terminals 2, 3 are disposed in the The two surfaces are provided with a step portion 105 adjacent to the root portion of the body portion 103. The intermediate portions 202 and 302 of the conductive terminals 2 and 3 are embedded in the step portion 105. The grounded shielding plate 104, the shielding plate 104 is generally made of a metal material and is electrically conductive.

Referring to the second to fourth figures, the terminal block 1 includes an upper insulating portion 107, a lower insulating portion 108, and an insertion portion that is matched with the upper and lower insulating portions 107, 108 by injection molding and molded by injection molding. 109. The upper and lower terminal receiving grooves 11 and 12 are respectively disposed on the opposite surfaces of the front regions of the upper and lower insulating portions 107 and 108, and the shielding plate 104 is interposed between the upper and lower insulating portions 107 and 108. The upper row of conductive terminals 2 are embedded in the upper terminal receiving groove 11 by integral injection molding, and the lower row of conductive terminals 3 are embedded in the terminal receiving groove 12 by integral injection molding, and the opposite surfaces of the step portion 105 are respectively A grounding member 106 is disposed. The two grounding portions 1060 of the grounding member 106 are respectively attached to opposite sides of the body portion 103 and the grounding portion 1060 is formed with a contact piece 1061 elastically pressed against the metal casing 4. The metal casing 4 is fixed to the body portion 105 and forms a pair of cavities 101 around the abutting tongue 102 and the step portion 105. The upper wall of the metal casing 4 is respectively provided with two elastic pieces 41 extending into the abutting cavity 101 at the front end, and the inner wall surface of the lower wall is provided with two convex ribs 42 protruding into the abutting cavity 101, and the ribs 42 are along The docking connector is extended in the direction of insertion and removal. The metal cover 5 is typically secured to the metal housing 4 by laser welding. The metal cover 5 has a plurality of downwardly extending mounting legs 51 on both sides to secure the electrical connector 100 to the printed circuit board 200.

Referring to FIG. 5 to FIG. 8 , in the first preferred embodiment of the present invention, the front side of the grounding terminals 21 and 31 and the front side of the lower terminal receiving slots 11 and 12 are received. A through hole 111, 121 penetrating the front side wall of the butt tongue 102 is provided in a region corresponding to the free end region, that is, the first and second bent portions 211 and 311 and the first and second extending portions 212 and 312. The first bent portion 211 and the second bent portion 311 are inserted into the through holes 111 and 121, and the first extending portion 212 and the second extending portion 312 are exposed to the front side walls of the butt tongue 102 and respectively opposite to the shielding plate 104. The contact area 1042 is in contact with the connection. Thus, the grounding terminals 21, 31 are connected to the shielding plate 104 through the first and second extending portions 212, 312 of the front end, and the soldering legs 203, 303 at the rear end are connected to the grounding soldering points on the circuit board 200 to form The first head is connected, the tail end is connected, that is, parallel, to improve the resonance point of the frequency domain parameter of the connector, especially all the differential signal terminals including the signal terminals 22, 23, 32, 33 beside the ground terminals 21, 31. Crosstalk. In combination with the fifth to seventh figures, in order to ensure the reliability of the connection and further improve the high frequency performance and prevent signal crosstalk, part of the side edges of the ground terminal 21 located in the upper row are bent and extended to the side below and then horizontally extended. The third extending portion 213 is formed, and a part of the side edges of the grounding terminal 31 of the lower row corresponding to the column is further bent and extended toward the upper side and then horizontally extended to form the fourth extending portion 313. A bump 1041 is formed on both sides of the shielding plate 104 for contacting the third and fourth extending portions 213 and 313, respectively. In the present embodiment, the ground terminals 21 and 31 of the upper and lower rows are both disposed as the leftmost and rightmost ones, and the third and fourth extensions 213 and 313 are provided by the ground terminals 21 and 31 located at the leftmost side. Some of the side edges extend to the left side and are formed by extending to the right side of the side edges of the rightmost ground terminals 21, 31. In this way, after repeated high-frequency analysis tests by the applicant, it is verified that the added third and fourth extensions 213 and 313 are in contact with the bumps 1041 on both sides of the shielding plate 104, and in order to ensure the reliability of the connection, In terms of the high frequency performance of the connector, the more the contact points of the ground terminals 21, 31 and the shielding plate 104, the better the high frequency performance, and further reduce the crosstalk of the differential signal terminals and enhance the shielding effect. Referring to the ninth figure, it is worth mentioning that, in the present embodiment, the power terminals 24, 34 can also be configured like the ground terminals 21, 31, that is, have similar bending portions 241, 341 and extensions 242. And 342, the channels 112 and 122 are disposed on the bottom walls of the lower terminal receiving slots 11 and 12 above the receiving power terminals 24 and 34 for inserting the bent portions 241 and 341 of the upper and lower power terminals 24 and 34. The extending portions 242, 342 are in contact with each other, and a notch 1043 is disposed at a position corresponding to the channels 112, 122 in a front portion of the shielding plate 104, such that the extending portions 242, 342 of the upper and lower power terminals 24, 34 are in contact with each other, and thereafter The end soldering legs 203, 303 are all connected to the power soldering points on the circuit board 200, and the power terminals 24, 34 corresponding to the upper and lower rows are also connected in parallel, so as to further improve the crosstalk of the differential signal terminals beside the power terminals 24, 34 and Improve high frequency performance, but this creation is not limited to this.

The structure of the electrical connector of the second preferred embodiment of the present invention is similar to that of the first preferred embodiment. The main difference is that the opposite surfaces of the shielding plate 104 are provided with the first and second extensions 212 of the ground terminals 21, 31. The contact area 1042 of the 312 connection is changed to be a cutout or a notch, and the third and fourth extensions 213 and 313 are omitted so that the first and second extensions 212 and 312 are not provided by the shielding plate 104. Direct mechanical contact, or even if the shielding plate 104 does not exist, the front ends of the contact portions 201, 301 of the grounding terminals 21, 31 are mechanically contacted, and the rear end soldering legs 203, 303 are connected to the grounding soldering point, and the grounding terminal 21 is improved if provided. The crosstalk of all differential signal terminals including signal terminals 22, 23, 32, 33 is next to 31.

Regardless of the first preferred embodiment or the second preferred embodiment, the ground terminal 21 of the present electrical connector 100 and the ground terminal 31 of the corresponding row of the lower row are electrically connected in parallel. In the case of setting, the resonance point of the connector frequency domain parameter is improved to conform to the specifications in the USB Type-C specification, and all of the signal terminals 22, 23, 32, 33 located beside the ground terminals 21, 31 are improved. Crosstalk of the differential signal terminals.

In summary, this creation has indeed met the requirements of the new patent, and filed a patent application in accordance with the law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereby. Equivalent modifications or variations made by those of ordinary skill in the art in the spirit of the present invention are still covered by the appended claims.

104‧‧‧Shielding board

1042‧‧‧Contact area

201‧‧‧Contacts

203‧‧‧welding feet

211‧‧‧First bend

212‧‧‧First Extension

301‧‧‧Contacts

303‧‧‧ soldering feet

311‧‧‧The second bend

312‧‧‧Second extension

200‧‧‧ boards

Claims (10)

An electrical connector that can be mated with a pair of connectors, including:
a terminal block; and a plurality of conductive terminals, wherein the upper and lower rows are disposed on opposite sides of the terminal block, and each of the conductive terminals includes a contact portion that is butted with the mating connector, wherein the plurality of conductive terminals are a plurality of grounding terminals, each of which is a free end of the contact portion, the rear end is a soldering leg, and the soldering legs of the grounding terminal are used for grounding;
The free ends of the contact portions of the ground terminals corresponding to the upper and lower rows are electrically connected to each other such that the ground terminals located in the upper row and the ground terminals in the corresponding row of the lower row are electrically connected in parallel. The electrical connector of claim 1, wherein the two rows of conductive terminals further comprise differential signal terminals for transmitting and receiving data at high speed, the differential signal terminals being adjacent to the ground terminal in pairs Settings. The electrical connector of claim 1, wherein the free end of the contact portion of the grounding terminal located in the upper row is provided with a first bent portion formed by bending downward at an angle and from the first bend a first extending portion formed by extending the folded portion horizontally forwardly, and a free end of the contact portion of the grounding terminal corresponding to the lower row is provided with a second bent portion formed by bending at an angle upward and from the second bending portion The portion is further extended horizontally to form a second extension. The electrical connector of claim 1, wherein the conductive terminal further comprises a plurality of power terminals, wherein the power terminals of the upper row are in mechanical contact with the contact portions of the power terminals of the corresponding row of the lower row Form electrical parallel. The electrical connector of claim 3, wherein the terminal block is provided with a plurality of upper and lower terminal receiving slots, and the contact portions are respectively received in the upper and lower terminal receiving slots for receiving The bottom of the upper and lower terminal receiving grooves of the grounding terminal contact portion are provided with through holes corresponding to the upper and lower positions corresponding to the free end region, the through holes penetrating through each other, the first and second bending The portion is inserted into the through hole such that the first and second extensions are in mechanical contact with each other. The electrical connector of claim 5, wherein the terminal block is further provided with a shielding plate, the shielding plate is sandwiched between the upper and lower terminal receiving slots, and the shielding plate is corresponding to A gap is formed in the region of the through hole to form a passage for the first and second extension portions to contact. The electrical connector of claim 3, wherein the terminal block is further provided with a shielding plate, and the first extension portion and the second extension portion of the ground terminal corresponding to the upper and lower rows are both Corresponding regions of the opposite faces of the shielding plate are in contact such that the corresponding ground terminals of the upper and lower rows are electrically connected in parallel. The electrical connector of claim 7, wherein the terminal block comprises a butt tongue on the front side and a body portion on the rear side, the butt tongue has opposite surfaces, and the two surfaces are opened The shielding plate is disposed in the upper and lower terminal receiving slots of the conductive terminal contact portion, and the shielding plate is disposed in the butting tongue and sandwiched between the bottom walls of the upper and lower terminal receiving slots for receiving the grounding The front side wall of the upper and lower terminal receiving grooves of the terminal contact portion is provided with a through hole penetrating the front side wall of the butt tongue in the corresponding free end region, and the first bent portion and the second bent portion are inserted into the The through hole, the first extension portion and the second extension portion expose the front side wall of the butt tongue and are in contact connection with the shielding plate. The electrical connector of claim 7, wherein a portion of the side edge of the grounding terminal located in the upper row is bent downwardly and laterally and then horizontally extended to form a third extending portion, wherein the lower row corresponds to the column. A portion of the side edge of the grounding terminal is bent and extended to the upper side to form a fourth extending portion, and the side of the shielding plate extends with a bump that respectively contacts the third and fourth extending portions. The electrical connector of claim 1, wherein the terminal block comprises a butt tongue on the front side and a body portion on the rear side, the butt tongue has opposite surfaces, the two rows are electrically conductive The terminal is disposed on the two surfaces, the butt tongue is provided with a step portion adjacent to the root portion of the body portion, and the conductive terminal further includes an intermediate portion embedded in the step portion, and the two opposite portions of the step portion The surface is respectively provided with a grounding member, and the electrical connector further includes a metal casing fixed to the body portion and forming a pair of cavities around the abutting tongue and the step portion.