CN112134095A

CN112134095A - Card edge connector

Info

Publication number: CN112134095A
Application number: CN202010884643.2A
Authority: CN
Inventors: 赵志斌; 唐文军
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hongteng Precision Technology Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hongteng Precision Technology Co Ltd; Foxconn Interconnect Technology Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2020-12-25
Also published as: TWM628001U

Abstract

A card edge connector comprises an insulating body, a row of first terminals, a row of second terminals and a grounding piece, wherein the insulating body comprises a front end face and a rear end face which are opposite, and a clamping groove which penetrates through the front end face; the fixing part is provided with two opposite side surfaces perpendicular to the terminal arrangement direction, the row of second terminals comprises signal terminals and grounding terminals, and the grounding piece is provided with an elastic arm which is pressed against the side surfaces of the fixing part. The elastic arm of the grounding piece can firmly press against the grounding terminal, so that the high-frequency performance of the card edge connector is improved.

Description

Card edge connector

[ technical field ] A method for producing a semiconductor device

The present invention relates to a card edge connector.

[ background of the invention ]

Utility model No. CN210628555U discloses a DDR connector, which comprises a socket and a bracket connected to both ends of the socket, wherein a slot is arranged in the socket, the two ends of the slot are respectively provided with a first terminal hole and a second terminal hole, a first terminal is arranged in the first terminal hole, a second terminal is arranged in the second terminal hole, the bracket is provided with a first jack and a second jack by one end of the socket, a support plate is inserted in the first jack, the support plate is positioned under the bracket, the support plate comprises a first inserting part inserted in the first jack, a cushion plate part connected to one end of the first inserting part, a support part connected to the lower side of the middle part of the cushion plate part, an installation part connected to the bottom of the support part, and a first bending part connected to the upper side of the terminal of the cushion plate part, a side baffle is inserted in the second jack, the side baffle is located the support outside, the side baffle including peg graft in second grafting portion in the second jack, connect in the side board portion of second grafting portion one end, connect respectively the second kink of both sides about the side board portion end, third kink, the support end is equipped with a joint portion, the second kink with joint portion upper end lock is connected, the third kink clamp is located first kink with between the bearing. However, as the rate increases, the performance requirements for signal transmission increase, and the DDR connector described above does not meet the requirements.

Therefore, there is a need to modify the existing card edge connector to overcome the above-mentioned drawbacks.

[ summary of the invention ]

An object of the present invention is to provide a card edge connector capable of improving signal transmission performance.

In order to achieve the purpose, the invention adopts the following technical scheme: a card edge connector comprises an insulating body, a row of first terminals, a row of second terminals and a grounding piece, wherein the insulating body comprises a front end face and a rear end face which are opposite, and a clamping groove which penetrates through the front end face; the connecting portion has two opposite side surfaces facing the adjacent terminals respectively, the first terminals in one row include signal terminals and ground terminals, and the ground member has elastic arms pressed against the side surfaces of the connecting portion.

Compared with the prior art, the elastic arm of the grounding piece can firmly press against the grounding terminal, so that the high-frequency performance of the card edge connector is improved.

[ description of the drawings ]

Fig. 1 is a perspective view of the card edge connector of the present invention.

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

Fig. 3 is an exploded perspective view of fig. 1.

Fig. 4 is an exploded perspective view from another perspective.

Fig. 5 is a perspective view of the ground member separated from the upper row of terminals.

Fig. 6 is a perspective view of the ground member holding the upper row of terminals.

Fig. 7 is a top view of fig. 6.

Fig. 8 is a sectional view taken along a broken line a-a of fig. 1.

Fig. 9 is a sectional view taken along the direction of the broken line B-B in fig. 1.

[ description of element symbols ]

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

[ detailed description ] embodiments

FIGS. 1-9 illustrate the card edge connector of the present invention for inserting an M.2module or M.2 card for transmitting PCI-EXPRESS signals. The card edge connector is improved in that the grounding piece is provided with a plurality of pairs of elastic arms 42, each pair of elastic arms 42 clamps the same grounding terminal 20G, the electrical performance of the card edge connector in the aspects of return loss, insertion loss and crosstalk is improved, and meanwhile, the grounding piece is of a whole piece type and covers all terminals to improve electromagnetic Interference , namely Electro Magnetic Interference (EMI). The respective structures will be described in detail below.

Referring to fig. 1 to 4, the card edge connector 100 includes an insulative housing 10, a row of first terminals 20, a row of second terminals 30, and a ground member 40. The insulating body 10 includes a front end surface 11 and a rear end surface 12 opposite to each other, and a slot 13 penetrating the front end surface 11. The card slot 13 penetrates forwards, and the upper wall of the card slot is shorter and positioned behind the lower wall of the card slot for oblique insertion of the electronic card.

As shown in fig. 3-4 and 8, the first terminal 20 is inserted into the insulative housing 10 from the rear end 12. The first terminal 20 includes a connecting portion 22, an elastic portion 21 extending from the connecting portion to the card slot 13, and a pin 23 extending from the connecting portion to the insulating body, wherein the elastic portion 21 has a contact portion 210 protruding into the card slot 13. The connecting portion 22 of the first terminal extends to form a first fixing portion 221, the first fixing portion 221 is inserted into the insulating body from the rear end face 12 and is fixed to the insulating body through a barb hard interference arranged on the first fixing portion 221, and the connecting portion 22 of the first terminal further includes a vertical portion 222 and an enlarged portion 223 protruding forwards from the vertical portion. The enlarged portion 223 has two opposite side surfaces 224 facing the adjacent terminals 20, respectively, in the longitudinal direction. The first fixing portion 221 is formed extending forward from a top end of the vertical portion 222, and the enlarged portion 223 is located below the first fixing portion 221. The insulating body 10 is provided with a plurality of vertical slots 140 with the rear end surface 12 thereof being recessed forward to accommodate the vertical portions 222, fixing slots 141 extending forward from the vertical slots 140, accommodating slots 142, and through slots 143 located at the top ends of the vertical slots and communicating with the card slots 13, as best seen in fig. 8, the first fixing portions 221 of the first terminals are accommodated in the fixing slots 141, the enlarged portions 223 are accommodated in the accommodating slots 142, and the elastic portions 21 are accommodated in the through slots 143 and are elastically deformable in the through slots 143. The receiving grooves 142 are located below the fixing groove 141 and are separated from each other in the vertical direction. In the prior art, the receiving groove 142 exists as a material escaping hole, and in the embodiment, the originally empty receiving groove 142 is used for receiving the enlarged portion 223, which is helpful for increasing the clamping area of the elastic arm, and at the same time, no additional process is required.

The second terminal 30 is inserted into the insulative housing 10 from the front end face 11. The second terminal 30 includes a connection portion 32, an elastic portion 31 extending from the connection portion to the card slot 13, and a pin 33 extending from the connection portion to the insulation body, and the elastic portion 21 has a contact portion 310 protruding into the card slot 13. The connecting portion 32 of the second terminal extends to form a second fixing portion 321, the second fixing portion 221 is inserted into the insulating body from the front end surface 11 and is fixed to the insulating body through the barb hard interference provided thereon, the connecting portion 32 of the second terminal further includes a vertical portion 322, and the second fixing portion 321 is formed by extending forward from the top end of the vertical portion 322. The insulating housing 10 has a plurality of vertical slots (not numbered) with the front end surface 11 recessed forward, a fixing slot 151 extending backward from the vertical slots, and a through slot 153 located at the top end of the vertical slots and communicating with the card slot 13, as clearly shown in fig. 9, the second fixing portion 321 of the second terminal is accommodated in the fixing slot 151, and the elastic portion 31 is accommodated in the through slot 153 and can elastically deform in the through slot 153. The front end surface 11 is further provided with a plurality of material escaping grooves 154 parallel to the fixing grooves 151 for improving the manufacturing process.

Referring to fig. 5-7, the row of first terminals 20 includes a plurality of signal terminals 20S and a plurality of ground terminals 20G, the basic structure of the signal terminals and the ground terminals is the same, and the ground member 40 has a resilient arm 42 pressed against the side of the connecting portion 22. Specifically, the grounding member 40 is a plate-shaped metal member located on the same horizontal plane, and the first terminal 20 is a plate-shaped structure located on the same vertical plane, and the planes of the two are perpendicular to each other. The grounding member 40 is provided with a pair of elastic arms 42 corresponding to each grounding terminal 20G to form a clamping member, and the elastic arms of each clamping member respectively clamp two opposite side surfaces 224 of the enlarged portion 223 of the corresponding grounding terminal 20G, namely, the enlarged portion 223 of the grounding terminal is vertically flat and stands between the pair of elastic arms 42, as clearly seen in fig. 6. Thus, each pair of elastic arms 42 firmly holds one ground terminal 20G, so as to achieve the electrical connection between the ground terminal 20G and the ground member 40. The grounding member 40 includes an elongated connecting beam 41, a plurality of resilient arms 42 extending forward from the connecting beam 41, and a structure of relatively protruded projections 421 provided in front of the resilient arms, the projections 421 of each holder projecting horizontally in the longitudinal direction toward each other in opposite directions so that the projections 421 abut on the enlarged portion 223 located therebetween, more specifically, the opposite projections 421 hold both opposite sides 224 of the enlarged portion 223. The ground terminals 20G of the first terminals are connected together by the ground member 40, so that resonance between the terminals is improved, and high-frequency performance in terms of return loss, insertion loss, and crosstalk of the card edge connector is improved. The grounding member 40 further includes flat portions 43 at two sides and in the middle of the elastic arm 42, which increase the contact area with the inside of the insulating housing and enhance the interference holding force between the grounding member and the insulating housing. The enlarged portion 223 is received in the receiving slot 142, and in the prior art, the receiving slot 142 is an escape slot, in this embodiment, the original empty escape slot can be received by the enlarged portion 223, so as to increase the holding area of the elastic arm, and at the same time, no additional process is required.

The grounding member 40 is installed into the housing 10 from the rear end face 12, and the housing 10 includes a plurality of protruding walls 16 at the rear end, and the protruding walls 16 extend rearward beyond the rear end face 12. The projecting walls 16 are divided into two parts which are spaced up and down due to the existence of the slots in the middle positions, a plurality of slots are longitudinally communicated to form a longitudinal slot 161 (see fig. 4) for accommodating the grounding piece, and the longitudinal slot further comprises a slot 162 (see fig. 8) which extends inwards to the inside of the insulating body; the connecting beam 41 of the grounding member is received in the longitudinal slot 161, the elastic arm 42 of the grounding member extends into the slot 162, the slot 162 is distributed on both sides of the receiving slot 142 and communicates with the receiving slot 142, so that the protrusion 421 of each pair of elastic arms protrudes into the receiving slot 142 and abuts against the side 224 of the enlarged portion 223.

In summary, the above is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby. All such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and protected by the following claims.

Claims

1. A card edge connector comprises an insulating body, a row of first terminals, a row of second terminals and a grounding piece, wherein the insulating body comprises a front end face and a rear end face which are opposite, and a clamping groove which penetrates through the front end face; the connecting portion has two opposite side surfaces respectively facing the adjacent terminals, characterized in that: one row of first terminal includes signal terminal and ground terminal, the ground connection has to press in the spring arm of the side of connecting portion.

2. The card edge connector according to claim 1, wherein: the grounding piece is provided with a pair of elastic arms at the position corresponding to each grounding terminal to form a clamping piece, and the elastic arms of each clamping piece respectively clamp two opposite side surfaces of the corresponding grounding terminal.

3. The card edge connector as claimed in claim 2, wherein: the connecting portion of the first terminal includes a vertical portion and an enlarged portion projecting forward from the vertical portion, and the holding member is held by the enlarged portion.

4. The card edge connector according to claim 1, wherein: the grounding piece comprises a lengthwise connecting beam, a plurality of elastic arms extend forwards from the connecting beam, a relatively convex structure is arranged in front of the elastic arms, and the protrusions are abutted to two opposite side surfaces of the connecting part.

5. The card edge connector as claimed in claim 3, wherein: the grounding part is installed into the insulating body from the rear end face, and the first fixing part is fixed on the insulating body through barb hard interference arranged on the first fixing part.

6. The card edge connector as claimed in claim 3, wherein: the first fixing portion is formed by extending forward from the top end of the vertical portion, and the enlarged portion is located below the first fixing portion.

7. The card edge connector according to claim 1, wherein: the row of the second terminals is inserted into the front end surface of the insulating body from front to back, and the connecting portion of the second terminal includes a vertical portion extending downward and a second fixing portion projecting rearward from the vertical portion.

8. The card edge connector according to claim 1, wherein: the insulating body comprises a plurality of protruding walls positioned at the rear end of the insulating body, and the protruding walls extend backwards beyond the rear end face.

9. The card edge connector as claimed in claim 8, wherein: the bulge walls are divided into two parts which are spaced up and down due to the fact that the middle position of each bulge wall is provided with the corresponding groove, the grooves are longitudinally communicated to form a longitudinal groove for accommodating the grounding piece, and the longitudinal groove further comprises an accommodating groove which extends inwards to the inside of the insulating body.

10. The card edge connector as claimed in claim 9, wherein: the grounding piece comprises a connecting beam accommodated in the longitudinal groove and an elastic arm extending inwards from the connecting beam into the accommodating groove.