CN111952748A

CN111952748A - Card edge connector

Info

Publication number: CN111952748A
Application number: CN202010634905.XA
Authority: CN
Inventors: 赵志斌; 叶明坤; 余宏基
Original assignee: Chongqing Hongteng Technology Co ltd; Hongteng Precision Technology Co Ltd
Current assignee: Chongqing Hongteng Technology Co ltd; Hongteng Precision Technology Co Ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2020-11-17
Anticipated expiration: 2040-07-03
Also published as: CN111952748B; TWM623130U

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 fixed part protrudes forwards from the front edge of the fixed part to form a first interference part and a second interference part, and the first interference part and the second interference part are fixed on the insulating body; the row of second terminals comprises signal terminals and grounding terminals, the grounding piece is provided with a plurality of grounding fingers, and the grounding fingers are abutted against the second interference parts of the corresponding grounding terminals. The grounding piece is positioned in the insulating body, so that high frequency can be improved, and the strength of the connector is enhanced.

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 patent No. CN210628555U discloses a DDR connector. The connector comprises a socket and a bracket connected to two ends of the socket, wherein a slot is arranged in the socket, a first terminal hole and a second terminal hole are respectively arranged at two ends of the slot, a first terminal is arranged in the first terminal hole, a second terminal is arranged in the second terminal hole, a first jack and a second jack are arranged at one end, close to the socket, of the bracket, a support plate is inserted in the first jack and 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 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 tail end of the cushion plate part, a side baffle is inserted in the second jack and is positioned outside the bracket, the side baffle comprises a second inserting portion inserted in the second inserting hole, a side plate portion connected to one end of the second inserting portion, a second bending portion and a third bending portion, wherein the second bending portion and the third bending portion are connected to the upper side and the lower side of the tail end of the side plate portion respectively, the tail end of the support is provided with a clamping portion, the second bending portion is connected with the upper end of the clamping portion in a buckling mode, and the third bending portion is clamped between the first bending portion and the supporting portion. 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 for a retrofit for existing electrical connectors to overcome the above-mentioned deficiencies.

[ summary of the invention ]

An object of the present invention is to provide a card edge connector capable of improving high-frequency 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 fixed part protrudes forwards from the front edge of the fixed part to form a first interference part and a second interference part, and the first interference part and the second interference part are fixed on the insulating body; the row of second terminals comprises signal terminals and grounding terminals, the grounding piece is provided with a plurality of grounding fingers, and the grounding fingers are abutted against the second interference parts of the corresponding grounding terminals.

Compared with the prior art, the grounding piece is positioned in the insulating body, so that the high frequency can be improved, and the strength of the connector can be enhanced.

[ 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 a partially exploded perspective view of fig. 2.

Fig. 4 is a sectional view taken along a broken line a-a of fig. 1.

Fig. 5 is a sectional view taken along the direction of the broken line B-B in fig. 1.

Fig. 6 is a sectional view taken along the direction of the dotted line C-C in fig. 1.

[ description of element symbols ]

Card edge connector 100 first terminal 20

Second terminal 30 of insulating body 10

Elastic parts

21, 31 of front end surface 11

Rear end face 12

terminal

210, 310

Card slot 13

holding parts

22, 32

Fixing

grooves

142, 152 for

pins

23, 33

Grounding member 40 penetrating through

slots

143, 153

Chute 154 grounding finger 42

Horizontal plate 41 of holding groove 16

Longitudinal groove 171 and accommodation groove 172

Signal terminal

30S circuit board 900

Ground terminal 30G

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

[ detailed description ] embodiments

Fig. 1 to 6 show a card edge connector of the present invention for inserting an m.2module or m.2 card for transmitting a PCI-EXPRESS signal, and the detailed structure thereof will be described in detail.

Referring to fig. 1 to 3, 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. As can be seen from fig. 4, the card slot 13 extends forward, and the upper wall of the card slot is shorter and located behind the lower wall for oblique insertion of the daughter card.

As shown in fig. 4, the first terminal 20 is inserted into the insulating housing 10 from the front end surface 11. The first terminal 20 includes a fixing portion 22, an elastic portion 21 extending from the fixing portion to the card slot 13, and a pin 23, wherein the elastic portion 21 has a contact portion 210 protruding into the card slot. The fixing portion 22 of the first terminal is fixed to the insulating body adjacent to the front end face 11. The fixing portion 22 of the first terminal is vertical and includes a first interference portion 241 and a second interference portion 242 protruding backward, the first and second interference portions are arranged along the vertical direction, the first interference portion 241 is located at the boundary between the fixing portion 22 and the elastic portion 21, and the second interference portion 242 is located at the position close to the pin 23. The insulating body 10 has a plurality of vertical grooves (not numbered, i.e., the places accommodated by the fixing portions 22) with front end surfaces recessed rearward, fixing grooves 142 extending rearward from the vertical grooves, and through grooves 143 located at the top ends of the vertical grooves and communicating with the card slots, wherein the fixing portions 22 of the first terminals are accommodated in the vertical grooves, the first and second interference portions are fixed in the fixing grooves 142 in a hard interference manner, and the elastic portions 21 are accommodated in the through grooves 143 and are elastically deformable in the through grooves 143. The two sides of the fixing part are fixed in the vertical groove in an interference mode, and the heads of the first interference part and the second interference part are provided with barbs, so that the hard interference force is increased.

Referring to fig. 5, the second terminal 30 includes a fixed portion 32, an elastic portion 31 extending from the fixed portion to the card slot 13, and a pin 33, wherein the elastic portion 31 has a contact portion 310 protruding into the card slot. The fixed portion 32 of the second terminal is secured to the housing adjacent the rear face 12. The fixing portion 32 of the second terminal is vertical and includes a first interference portion 341 and a second interference portion 342 protruding backward, the first and second interference portions are arranged along the vertical direction, the first interference portion 341 is located at the boundary between the fixing portion 32 and the elastic portion 31, and the second interference portion 342 is located at the position close to the pin 33. The insulating body 10 has a plurality of vertical grooves (not numbered, i.e., the places accommodated by the fixing portions 32) whose rear end surfaces are recessed forward, a horizontal groove 152 extending rearward from the vertical groove, and a through groove 153 located above the vertical groove and penetrating forward from the rear end surface to the card slot, the fixing portions 32 of the second terminals are accommodated in the vertical groove, the first and second interference portions are fixed in the fixing grooves 152 in a hard interference manner, and the elastic portions 31 are accommodated in the through groove 153 and are elastically deformable in the through groove 143. The two sides of the fixing part 32 are fixed in the vertical groove in an interference mode, and the heads of the first interference part and the second interference part are provided with barbs, so that the hard interference force is increased. The front and

rear end surfaces

11, 12 are provided with a plurality of material escape slots 154 parallel to the horizontal slots for improving the manufacturing process.

With reference to fig. 4-5, contact portion 210 of the first terminal extends into card slot 13 from front to back, and contact portion 310 of the second terminal extends into card slot 13 from back to front; the contact portion 210 of the first terminal is located in front of the contact portion 310 of the second terminal and lower than the contact portion of the second terminal, and the

elastic portions

21 and 31 are elastically deformable, so that the

contact portions

210 and 310 can rotate within the card slot at a small angle for achieving stable electrical connection after the electronic card is obliquely inserted.

With reference to fig. 5-6, the row of second terminals 30 includes signal terminals 30S and ground terminals 30G, the basic structure of the signal terminals and the ground terminals is the same, the second terminals 30 are formed by stamping metal plates, the plane of the metal plates is perpendicular to the arrangement direction of the second terminals 30, the fixing portion 32 is vertical, and the

interference portions

341 and 342 protrude forward from the front edge of the fixing portion 32. Referring to fig. 3 to 5, the grounding member 40 is a one-piece horizontal plate structure, and includes a horizontal plate 41 structure and a grounding finger 42 extending obliquely downward, the horizontal plate forming an opening at a position corresponding to each grounding finger, the grounding finger being formed by extending rearward and obliquely downward from a front edge of the opening. The grounding member is horizontally fixed in the insulative housing 10 in front of the second terminal 30, and is located above the second interference portion 342, and its grounding point extends downward into the fixing groove 152 to make electrical contact with the second interference portion. The grounding member may be located below the first interference portion 341, and the grounding finger 42 extends obliquely upward to abut against the first interference portion 341.

The insulating body 10 is provided with a longitudinal slot 171 recessed forward from the rear end face 12 and a plurality of receiving slots 172 located below the longitudinal slot, the horizontal plate 41 of the grounding member is clamped in the longitudinal slot, and the grounding finger 42 extends downward into the receiving slot. The longitudinal grooves are horizontally communicated along the terminal arrangement direction, and the containing grooves are arranged at intervals one by one. The holding groove 152 is located below the receiving groove and is communicated with the receiving groove, and the grounding finger 42 and the second interference portion 142 are electrically contacted with each other in the holding groove and the receiving groove.

The grounding finger 42 abuts against the grounding terminal 30G, so that the grounding terminal 30 and the grounding member are electrically connected to each other. The ground terminals 30G in the row of second terminals are connected together by the ground member, improving resonance between the terminals, thereby achieving improved electrical performance in terms of return loss, insertion loss, and crosstalk of the card edge connector. Further, the grounding member 40 is held in the insulating body and located between the two

interference portions

341 and 342 of the second terminal 30, so that the strength of the insulating body 10 can be increased, and the external space is not occupied, which is beneficial to the miniaturization of the electrical connector. In another embodiment, if the first terminal also includes a ground terminal, a ground member may be disposed behind the first terminal, and the ground finger of the ground member may abut against the first or/and second interference portions of the ground terminal of the first terminal.

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 fixed part protrudes forwards from the front edge of the fixed part to form a first interference part and a second interference part, and the first interference part and the second interference part are fixed on the insulating body; the method is characterized in that: the row of second terminals comprises signal terminals and grounding terminals, the grounding piece is provided with a plurality of grounding fingers, and the grounding fingers are abutted against the second interference parts of the corresponding grounding terminals.

2. The card edge connector according to claim 1, wherein: the fixing part of the second terminal is vertical, the first interference part is positioned at the junction of the fixing part and the elastic part, and the second interference part is close to the pin.

3. The card edge connector as claimed in claim 2, wherein: the grounding member is horizontally fixed in the insulating body and positioned in front of the second terminal.

4. The card edge connector as claimed in claim 3, wherein: the grounding piece is positioned above the second interference part, and the grounding finger extends obliquely downwards.

5. The card edge connector according to claim 1, wherein: the grounding piece is positioned below the first interference part, and the grounding finger extends obliquely upwards and abuts against the first interference part.

6. The card edge connector according to claim 1, wherein: one row of the second terminals are inserted into the front end face of the insulating body from front to back, the fixing portion of each row of the second terminals is vertical and comprises a first interference portion and a second interference portion which protrude backwards, the first interference portion is located at the junction of the fixing portion and the elastic portion, and the second interference portion is located at the position close to the pin.

7. The card edge connector as claimed in claim 4, wherein: the grounding member is generally a horizontal plate structure that forms an opening at each corresponding grounding finger that extends rearwardly and downwardly from a front edge of the opening.

8. The card edge connector as claimed in claim 7, wherein: the insulating body is provided with a longitudinal groove which is recessed forwards from the rear end face and a plurality of accommodating grooves which are positioned below the longitudinal groove, the horizontal plate of the grounding piece is clamped in the horizontal groove, and the grounding finger extends downwards into the accommodating grooves.

9. The card edge connector as claimed in claim 8, wherein: the longitudinal grooves are horizontally communicated along the terminal arrangement direction, and the accommodating grooves are spaced one by one.

10. The card edge connector as claimed in claim 9, wherein: the insulating body further comprises a holding groove which is positioned below the accommodating groove and communicated with each other, the second interference part of the second terminal is held in the holding groove, and the grounding finger and the second interference part are contacted with each other.