CN115133310A

CN115133310A - Electrical connector

Info

Publication number: CN115133310A
Application number: CN202110311598.6A
Authority: CN
Inventors: 高声品; 徐勇春; 余宏基; 许志清; 张�杰; 吴进荣
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: 2021-03-24
Filing date: 2021-03-24
Publication date: 2022-09-30

Abstract

The invention discloses an electric connector which can be inserted and matched with a butting connector, and the electric connector comprises an insulating body, a circuit board assembled on the insulating body and a plurality of butting terminals arranged on the circuit board, wherein each butting terminal comprises a contact part which extends obliquely backwards and is used for being matched with the butting connector, a bent part which is bent backwards from the front end of the contact part, a connecting part which extends backwards from the rear end of the bent part and an installation part which extends vertically from the rear end of the connecting part and is used for being installed on the circuit board, and the size of the contact part exceeds the size of the installation part backwards so as to shorten the length of a transmission path of a signal on the butting terminal.

Description

Electrical connector with improved contact arrangement

[ technical field ] A

The present invention relates to an electrical connector, and more particularly, to an electrical connector for transmitting high-speed signals.

[ background of the invention ]

As the transmission speed increases, the electromagnetic interference in the RJ45 jack connector increases, so that the requirement of higher transmission rate cannot be met by the transmission of the conventional RJ45 jack connector. The prior art refers to US10333243B2 issued in 2019, 6, 25 and 2019, which discloses a conventional RJ45 socket connector, in which the electrical length from the contact point of the docking terminal and the RJ45 plug connector to the connection point of the pin terminal and the external circuit board is very long, so that the loss is large, and the requirement of high-speed network signal transmission cannot be met. Therefore, there is a need for an improved electrical connector to solve the above-mentioned drawbacks.

[ summary of the invention ]

The main purposes of the invention are as follows: an electrical connector suitable for high-speed signal transmission is provided, and the electrical length of the connection point of the contact point of the electrical connector and a butting connector to a circuit board is short.

In order to solve the technical problems, the invention can adopt the following technical scheme: the utility model provides an electric connector, it can with the butt joint connector insertion fit, electric connector include insulator, assemble in insulator's circuit board, install in a plurality of butt joint terminals of circuit board, butt joint terminal including the slope backward extend be used for with butt joint connector complex contact site, from the kink of the front end backward bending of contact site, from the rear end backward extension's of kink connecting portion and from the rear end vertical extension of connecting portion is used for installing installation department on the circuit board, the size of contact site exceedes backward the size of installation department to shorten the length of the transmission path of signal on the butt joint terminal.

Compared with the prior art, the invention has the advantages that: the size of the elastic contact part exceeds the size of the mounting part backwards so as to reduce the transmission path of signals on the conductive terminal, thereby shortening the electrical length from the contact point of the conductive terminal and the butting connector to the connection point of the circuit board and meeting the requirement of transmission speed of 25Gbps and above.

[ description of the drawings ]

Fig. 1 is a perspective view of an electrical connector according to the present invention.

Fig. 2 is a perspective view from another perspective of the electrical connector shown in fig. 1.

Fig. 3 is a perspective view from another perspective of the electrical connector shown in fig. 2.

Fig. 4 is a partially exploded view of the electrical connector shown in fig. 1.

Fig. 5 is a partially exploded view from another perspective of the electrical connector shown in fig. 4.

Fig. 6 is a further exploded view of the electrical connector shown in fig. 4.

Fig. 7 is a further exploded view from another perspective of the electrical connector shown in fig. 6.

Fig. 8 is an exploded view of a terminal module of the electrical connector shown in fig. 1.

Fig. 9 is an exploded view of the terminal module shown in fig. 8 from another perspective.

Fig. 10 is a cross-sectional view of the illustrated electrical connector shown in fig. 1 taken along the direction a-a.

[ description of main reference symbols ]

The insulation body 5 is butted with the space 50

Front wall 51 of electrical connector 500

Rear wall 52 channel 520

Fence slot 521 fence arm 522

Top wall 53 retaining groove 541

Bottom wall 54 side wall 55

Terminal module 6 circuit board 60

Mounting hole 601 rear mounting hole 603

Recess 604 locating hole 606

Terminal assembly 61 mating terminal 611

Contact portion 613 of fixing block 612

A connecting portion 617 of the bent portion 615

Mounting portion 619 magnetic module 65

Positioning post 620 first butt terminal 621

Second docking terminal 622 third docking terminal 623

Fourth mating terminal 624 fifth mating terminal 625

Sixth docking terminal 626 seventh docking terminal 627

Eighth butt-joint terminal 628 groove 629

Pin terminal 63 holding portion 631

Bulge 605 lead 635

The receiving member 69 receives the chamber 691

Middle holding part 641 of metal shielding shell 7

Middle pin 643 of middle terminal 64

[ detailed description ] embodiments

As shown in fig. 1-10, an electrical connector 500 consistent with the present invention is provided, which can be inserted and fitted from front to back into a mating connector (not shown) and can be mounted to an external device (not shown) for switching network signals transmitted between the mating connector and the external device. The electrical connector 500 of the present invention is an RJ45 connector that can support the transmission of high speed signals at 25Gbps, 40Gbps and above.

The electrical connector 500 includes an insulating housing 5, a terminal module 6 mounted on the insulating housing 5, and a metal shielding case 7 covering the insulating housing 5 and the terminal module 6.

The insulating body 5 includes a front wall 51, a rear wall 52, a top wall 53, a bottom wall 54 and two side walls 55. Each of the walls encloses a mating space 50 into which a mating connector can be inserted and received. The bottom wall 54 is provided with a catching groove 541 penetrating the bottom wall 54. The catching groove 541 is for catching engagement with a catching tail (not shown) of the mating connector. A through groove 520 penetrating the rear wall 52 in the front-rear direction is provided on the upper side of the rear wall 52. The through groove 520 communicates with the docking space 50. The upper part of the rear wall 52 is provided with a row of barrier slots 521 which penetrate through the rear wall and barrier arms 522 which are arranged between two adjacent barrier slots 521. The barrier groove 521 communicates with the docking space 50 in the front-rear direction and communicates with the through groove 520 in the up-down direction.

The terminal module 6 includes a circuit board 60 horizontally disposed, a terminal assembly 61 mounted on the circuit board 60, a pin terminal 63 mounted on the circuit board 60 and capable of being mounted to an external device, a magnetic module 65 electrically connected between the terminal assembly 61 and the pin terminal 63, a receptacle 69 disposed on a lower side of the circuit board 60, a receptacle 69 of the magnetic module 65, and an intermediate terminal 64 connected between the receptacle 69 and the circuit board. The pin terminal 63 may be mounted downward to an external device.

The front portion of the circuit board 60 is provided with a row of mounting holes 601 penetrating the circuit board 60. The rear part of the circuit board 60 is provided with a plurality of rear mounting holes 603 penetrating through the circuit board 60, the middle part of the front end of the circuit board 60 is retracted backwards to form a concave part 604, and the positions of the two sides of the front end form a forward convex part 605 relative to the concave part 604.

The terminal assembly 61 includes a plurality of mating terminals 611 for mating with a mating connector and fixing blocks 612 for integrally fixing the mating terminals 611. The butt terminal 611 is a conductive terminal capable of conducting electricity. The counterpart terminal 611 includes first to eighth counterpart terminals 621 to 628 arranged in series in the transverse direction. The first and

second docking terminals

621 and 622, the third and

sixth docking terminals

623 and 626, the fourth and

fifth docking terminals

624 and 625, and the seventh and

eighth docking terminals

627 and 628 are respectively used for transmitting a pair of differential signals. The distance between the third and

fourth docking terminals

623 and 624 and the distance between the fifth and

sixth docking terminals

625 and 626 are greater than the distance between the other two adjacent docking terminals, so as to reduce crosstalk between the third and

sixth docking terminals

623 and 626.

Each of the butted terminals 611 includes an elastic contact portion 613 extending obliquely rearward and downward, a bent portion 615 bent upward and then rearward from a front end of the contact portion 613 in a C-shape, a connection portion 617 extending rearward from a rear end of the bent portion 615, and a mounting portion 619 extending vertically downward from a rear end of the connection portion 617 for mounting on the circuit board 60. The connecting portion 617 extends horizontally rearward. The contact portion 613 is sized to extend rearwardly beyond the rearmost end of the mounting portion 619, thereby reducing the overall length of the mating terminal to shorten the length of the signal transmission path over the mating terminal 611. In the present invention, the total length of the counterpart terminal 611 from the end of the contact portion 613 to the end of the mounting portion 619 is not more than 15 mm. The mounting portion 619 is inserted into the mounting hole 601 from the top down and is solder-connected to the circuit board 60. The size of the mounting portion 619 into the mounting hole 601 is not greater than the depth of the mounting hole 601. The fixing block 612 is fixed to the connecting portion 617 of each of the butt terminals 611, and specifically, in this embodiment, the fixing block 612 is integrally formed on the connecting portion 617 of each of the butt terminals 611. The connection portion 617 and the contact portion 613 are located on opposite sides of the circuit board 60, respectively. Specifically, in the present embodiment, the connection portion 617 is located on the upper side of the circuit board 60, and the contact portion 613 is located on the lower side of the circuit board 60, so that the height of the docking terminal 611 on the upper side and the lower side of the circuit board 60 can be reduced. The front end surface of the concave portion 604 of the circuit board 60 is disposed opposite to the rear end surface of the fixing block 612. The front end of the circuit board 60 is located in the docking space 50 to shorten a transmission path of signals on the docking terminal. Specifically, in the present invention, the front end of the circuit board 60 is located at the upper portion of the docking space 50. A plurality of grooves 629 are formed on the side of the fixing block 612 facing the contact portion 613, the grooves 629 corresponding to the contact portion 613 in the vertical direction, and the grooves 629 increase a space for the contact portion 613 to elastically deform downward. The height of the two sides of the fixing block 612 is smaller than the height of the middle position. Positioning columns 620 protruding upwards are arranged on two sides of the fixing block 612, and positioning holes 606 matched with the positioning columns 620 are arranged on the two protruding parts 605 of the circuit board 60.

The receiving member 69 includes a receiving cavity 691 with a backward opening, an upper wall facing the circuit board 60 and a lower wall opposite to the upper wall, the upper wall forming the receiving cavity 691. The intermediate terminal 64 is held to the upper wall, and the pin terminal 63 is held to the lower wall. The magnetic module 65 is accommodated in the accommodating cavity 691.

Each of the pin terminals 63 includes a holding portion 631 held at a lower wall of the receptacle 69 and a pin 635 extending from the holding portion 631 for mounting to an external device. The intermediate terminal 64 includes an intermediate holding portion 641 held on the upper wall of the receiving member 69 and an intermediate pin 643 extending upward from the intermediate holding portion 641 for mounting to the circuit board.

When the electrical connector 500 is assembled, the front end of the circuit board 60 extends into the mating space 50 from the rear to the front through the through slot 520, and the mating terminals 611 extend into the mating space 50 from the rear to the front through the barrier slots 521 to the front. The contact portion 613 is cantilevered within the docking space 50.

In the present invention, the front end of the circuit board 60 can extend to the docking space 50 by the structural arrangement of the docking terminal 611, the length of a part of the conventional docking terminal is replaced by the conductive path on the PCB, the overall length of the docking terminal 611 is reduced, and the electrical distance from the contact point of the docking terminal 611 and the docking connector to the circuit board is the shortest, so that the length of the transmission path of the signal on the docking terminal 611 is shortened, the electrical distance from the contact point of the docking terminal 611 and the docking connector to the connection point of the pin terminal 63 and the external device is the shortest, the loss during the signal transmission process is reduced, and the stability and integrity of the high-frequency signal transmission are ensured, so as to achieve the purpose of transmitting high-speed signals of 25Gbps and above.

In the invention, the electrical connector 500 is provided with only one docking space 50 for inserting a docking connector and one circuit board 60 corresponding to the docking space, the docking terminal 611 is mechanically and electrically connected to the front end of the circuit board 60, and the pin terminal 63 is electrically connected to the rear end of the same circuit board 60 through an intermediate terminal and a magnetic module. Of course, in other embodiments, the electrical connector may also be provided with a plurality of docking spaces arranged laterally, one for each circuit board, or connected together to a large horizontally disposed circuit board.

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 electrical connector, which can be inserted into and mated with a mating connector, the electrical connector comprising an insulative housing, a circuit board assembled to the insulative housing, and a plurality of mating terminals mounted on the circuit board, the electrical connector comprising: the butt-joint terminal comprises a contact part, a bent part, a connecting part and an installation part, wherein the contact part extends obliquely backwards and is used for being matched with a butt-joint connector, the bent part is bent backwards from the front end of the contact part, the connecting part extends backwards from the rear end of the bent part, the installation part vertically extends from the rear end of the connecting part and is used for being installed on the circuit board, and the size of the contact part exceeds the size of the installation part backwards so as to shorten the length of a transmission path of a signal on the butt-joint terminal.

2. The electrical connector of claim 1, wherein said connecting portion and said contact portion are located on opposite sides of said circuit board, respectively.

3. The electrical connector of claim 1, wherein the circuit board includes a mounting hole for receiving the mounting portion, and the mounting portion is inserted into the mounting hole and soldered.

4. The electrical connector of claim 3, wherein the mounting portion extends into the mounting hole by a dimension no greater than the depth of the mounting hole.

5. The electrical connector of claim 1, further comprising a fixing block integrally fixing each of said mating terminals, said fixing block being disposed at the connecting portion of each of said conductive terminals.

6. The electrical connector as claimed in claim 5, wherein the front face of the circuit board is disposed opposite to the rear face of the fixing block.

7. The electrical connector of claim 1, wherein the length of the counterpart terminal from the distal end of the contact portion to the distal end of the mounting portion is not more than 15 mm.

8. The electrical connector of claim 1, further comprising a pin terminal mountable to an external device and a magnetic module electrically connected between the mating terminal and the pin terminal.

9. The electrical connector of claim 1, wherein said electrical connector includes one or more laterally aligned mating spaces, each of said mating spaces having only one circuit board disposed therein.

10. The electrical connector of claim 1, wherein the electrical connector is an RJ45 connector capable of supporting transmission speeds of 25Gbps or higher.