CN212751197U

CN212751197U - Card edge connector

Info

Publication number: CN212751197U
Application number: CN202021283063.XU
Authority: CN
Inventors: 顾锡祥; 唐文军; 余宏基; 赵志斌; 叶明坤
Original assignee: Chongqing Hongteng Technology Co ltd; Hongteng Precision Technology Co Ltd
Current assignee: Chongqing Hongteng Technology Co ltd; Hongteng Precision Technology Co Ltd; Foxconn Interconnect Technology Ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-03-19
Anticipated expiration: 2030-07-03
Also published as: TWM623129U

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; one row of the second terminals comprise signal terminals and grounding terminals, the grounding piece is coated on the rear end face of the insulating body and provided with a plurality of grounding fingers extending forwards, and the grounding fingers are abutted to the corresponding grounding terminals one by one. The utility model discloses a grounding part can effectively improve card edge connector's high frequency performance.

Description

Card edge connector

[ technical field ] A method for producing a semiconductor device

The utility model 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 to modify the existing card edge connector to overcome the above-mentioned drawbacks.

[ Utility model ] content

An object of the utility model is to provide a card edge connector, it can improve signal transmission performance.

In order to achieve the above purpose, the utility model 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; one row of the second terminals comprise signal terminals and grounding terminals, the grounding piece is coated on the rear end face of the insulating body and provided with a plurality of grounding fingers extending forwards, and the grounding fingers are abutted to the corresponding grounding terminals one by one.

Compared with the prior art, the utility model discloses a grounding part can effectively improve card edge connector's high frequency performance.

[ description of the drawings ]

Fig. 1 is a perspective view of a first embodiment 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 an enlarged view of the ground terminal abutting against the ground member in the card edge connector of fig. 1.

Fig. 7 is a perspective view of a second embodiment of the card edge connector of the present invention.

Fig. 8 is a perspective view of fig. 7 from another perspective.

Fig. 9 is a partially exploded perspective view of fig. 8.

Fig. 10 is a sectional view taken along a dotted line C-C of fig. 7.

Fig. 11 is a sectional view taken along a dotted line D-D of fig. 7.

Fig. 12 is a sectional view taken along a broken line E-E of fig. 7.

Fig. 13 is a cross-sectional view of the grounding member provided with a plurality of grounding fingers in the second embodiment.

[ description of element symbols ]

Card edge connector 100 second terminal 30

Elastic parts

21, 31 of insulating body 10

Front end surface 11

contact portion

210, 310

Rear end face 12

holding portions

22, 32

Card slot 13

pins

23, 33

Fixing grooves

142, 152

first interference portions

241, 341

Second interference portions

242, 342 penetrating through the grooves 143, 153

Escape chute 154 ground terminal 30G

Holding groove 16 signal terminal 30S

Latch arm 17 ground finger 41

Grounding member 40 of latch member 18

First terminal 20

Card edge connector 200 ground terminal 60G

Signal terminal 60S of insulating body 50

Rear end face 52 ground connection 70

Second terminal 60 ground finger 71

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

[ detailed description ] embodiments

Fig. 1 to 6 show a first embodiment of a card edge connector 100 for inserting a DDR SO-DIMM Module or SO-DIMM card, and fig. 7 to 13 show a second embodiment of a card edge connector 200 for inserting an m.2Module or m.2 card for transmitting PCI-EXPRESS signals. The improvement of the two embodiments is that the grounding member is added to connect the grounding terminals in the same row with each other, so as to improve the electrical performance of the card edge connector in terms of return loss, insertion loss and crosstalk, and the grounding member is a whole piece covering all the terminals, so as to improve the Electro Magnetic Interference (EMI). The respective structures will be described in detail below.

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. 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. 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 slots (not numbered, i.e., the places accommodated by the fixing portions 22) with the front end surface recessed backward, a horizontal slot 142 extending backward from the vertical slots, and a through slot 143 located at the top end of the vertical slots and communicating with the card slots, wherein the fixing portion 22 of the first terminal is accommodated in the vertical slot, the first and second interference portions are fixed in the fixing slot 142 in a hard interference manner, and the elastic portion 21 is accommodated in the through slot 143 and can be elastically deformed in the through slot 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 is provided with 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 backward from the vertical groove, and a through groove 153 extending forward from the rear end surface to the card slot, the fixing portion 32 of the second terminal is accommodated in the vertical groove, the first and second interference portions are fixed in the fixing groove 152 in a hard interference manner, wherein the first interference portion 341 is provided with an opening in a square frame shape, the upper frame and the lower frame of the first interference portion are hard interfered on the inner wall of the fixing groove 152, and the opening can provide an elastic deformation space for the upper frame and the lower frame. It is to be noted that, in the present application, the first and second interference portions of the first and

second terminals

20 and 30 may be provided in this configuration as needed. The elastic portion 31 is accommodated in the through groove 153 and is 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 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.

Referring to fig. 3, the insulative housing 10 includes latch arms 17 extending forward from both longitudinal ends thereof, and the card edge connector 100 includes a metal latch 18 assembled and fixed to the latch arms 17, wherein the latch 18 cooperates with the latch arms 17 to latch and fix the SO-DIMM card inserted into the card slot 13.

Referring to fig. 2-3, the grounding member 40 is a one-piece plate-shaped structure, and both ends of the grounding member are bent forward to be inserted into the holding groove 16 formed in the insulating body and cover the rear end surface 12 of the insulating body, so that the grounding member 40 transversely covers all the second terminals 30. Specifically, referring to fig. 4-5, the grounding member 40 extends upward to a position adjacent to the first interference portion 341 of the second terminal 30 and downward to a position adjacent to the pin 33, so as to perform a good EMI or electromagnetic interference function. The grounding member 40 is basically attached to the rear end surface 12, the first interference portion 341 is exposed at the rear end surface, and the grounding member extends upward to below the first interference portion, so that the grounding member does not contact the first interference portion, and the pin 33 extends rearward beyond the rear end surface 12 and the grounding member 40.

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. The ground member 40 is provided with a ground finger 41 corresponding to each ground terminal 30G, and the ground finger is a cantilever-like structure that is punched out of the ground member and extends obliquely upward. The grounding member 40 is an opening structure at the position corresponding to the grounding finger 41, the opening penetrates upwards, the grounding finger 41 extends forwards from the lower edge of the opening, the grounding finger 41 extends to abut against the grounding terminal 30G, so that the grounding terminal 30 and the grounding member 40 are electrically connected with each other. In other embodiments, a plurality of grounding fingers 41 may be disposed in a vertical arrangement corresponding to one grounding terminal 30G. The ground terminals 30G in the row of second terminals are connected together by the ground member 40, improving resonance between the terminals, thereby achieving improved electrical performance in terms of return loss, insertion loss, and crosstalk of the card edge connector.

Referring to fig. 7 to 13, a second embodiment of an m.2 card edge connector 200 for transmitting a PCI-EXPRESS signal includes an insulator 50, a second terminal 60 fixed to a rear end of the insulator, and a ground 70 shielding a rear end surface 52 of the insulator. The ground member 70 is provided with a ground finger 71 abutting against the ground terminal 60G, and the corresponding portion of the ground finger 71 is a window structure, and does not penetrate upward, and the ground member 70 is spaced from the rear end surface 12 by a predetermined distance. As shown in fig. 12 to 13, one ground terminal 60G may correspond to one ground finger 71 or a plurality of ground fingers to achieve stable electrical connection.

In summary, the above is merely a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby. All the equivalent changes and modifications made in the claims and the specification of the present invention should be covered by the present invention.

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 method is characterized in that: one row of the second terminals comprise signal terminals and grounding terminals, the grounding piece is coated on the rear end face of the insulating body and provided with a plurality of grounding fingers extending forwards, and the grounding fingers are abutted to the corresponding grounding terminals one by one.

2. The card edge connector according to claim 1, wherein: the fixed part of the second terminal is vertical, the fixed part protrudes forwards from the front edge of the fixed part to form a first interference part and a second interference part, the first interference part and the second interference part are fixed on the insulating body, and the grounding finger is pressed on the rear edge of the fixed part and is positioned between the first interference part and the second interference part in the vertical direction.

3. The card edge connector as claimed in claim 2, wherein: the grounding finger is a cantilever-shaped structure which is punched out of the grounding piece and extends upwards in an inclined mode.

4. The card edge connector as claimed in claim 3, wherein: the two ends of the grounding piece are bent forwards and inserted into and fixed on the insulating body, and the grounding piece is basically attached to the rear end face.

5. The card edge connector as claimed in claim 3, wherein: the grounding piece is plate-shaped, extends upwards to a position close to the first interference part and extends forwards to a position close to the pin.

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 2, wherein: an opening is arranged in the first interference part.

8. The card edge connector as claimed in claim 7, wherein: the first interference part is of a frame opening structure, and the upper frame and the lower frame corresponding to the opening are fixed in the insulating body in a hard interference mode.

9. The card edge connector as claimed in claim 3, wherein: the two ends of the grounding piece are bent forwards and inserted into and fixed on the insulating body, and the grounding piece is spaced from the rear end face by a distance.

10. The card edge connector according to claim 1, wherein: the one ground terminal corresponds to one ground finger or a plurality of ground fingers.