CN110676617B

CN110676617B - Card edge connector

Info

Publication number: CN110676617B
Application number: CN201810717678.XA
Authority: CN
Inventors: 蒋煜; 李庄星; 唐文军; 卜学武
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: 2018-07-03
Filing date: 2018-07-03
Publication date: 2022-06-24
Anticipated expiration: 2038-07-03
Also published as: CN110676617A

Abstract

The invention discloses a card edge connector, which comprises a lengthwise insulating body and two rows of conductive terminals fixed on the insulating body, wherein the insulating body comprises two side walls which are oppositely arranged and extend along the lengthwise direction and a bottom wall which is connected with the two side walls, a clamping groove is formed between the two side walls, the two rows of conductive terminals are arranged one by one along the side walls, and each conductive terminal comprises a base part which is fixedly held in the insulating body, an elastic contact arm which extends into the clamping groove from the base part and a pin which extends out of the bottom wall from the base part; the bottom wall is provided with a bottom surface and an outer side surface corresponding to the two side walls, the connecting pins of each row of conductive terminals comprise first welding pads bent inwards and second welding pads bent outwards, the first welding pads of the two rows of conductive terminals are located in the range of the bottom surface, and the second welding pads extend outwards to form the outer side surface. With such an arrangement, the size of the insulating body in the transverse direction perpendicular to the longitudinal direction is small, which is beneficial for the miniaturization trend of the card edge connector.

Description

Card edge connector

[ technical field ] A method for producing a semiconductor device

The present invention relates to a card edge connector, and more particularly, to a terminal structure of a card edge connector.

[ background of the invention ]

Prior artreferring to the chinese utility model patent No. CN201638992U, published 11/17/2010, an electrical connector is disclosed, which comprises an insulating body and a plurality of conductive terminals housed in the insulating body. The insulating body comprises a longitudinal base part and a slot arranged along the longitudinal base part. The conductive terminals are arranged on two sides of the slot along the longitudinal direction. The conductive terminal comprises a base part fixed in the insulating body, an elastic contact arm extending into the slot from the base part and a welding part extending from the base part. The welding part comprises an extension part extending from the base part, a first bending part bent from the extension part, a connecting part, a second bending part and a pad part. The pad part is positioned in a section of the first bending part distributed in the longitudinal direction. The pad part is provided with a groove for adhering the solder ball. In a transverse direction perpendicular to the longitudinal direction, the size of the insulating body is larger.

There is a need for a card edge connector that is smaller and less costly.

[ summary of the invention ]

The technical problem to be solved by the invention is as follows: a card edge connector having a small structure and a low cost is provided.

In order to solve the above problems, the present invention can adopt the following technical scheme:

a card edge connector comprises a lengthwise insulating body and two rows of conductive terminals fixed on the insulating body, wherein the insulating body comprises two side walls which are oppositely arranged and extend along the lengthwise direction and a bottom wall which is connected with the two side walls, a clamping groove is formed between the two side walls, the two rows of conductive terminals are arranged one by one along the side walls, and each conductive terminal comprises a base part which is fixedly held in the insulating body, an elastic contact arm which extends into the clamping groove from the base part and a pin which extends out of the bottom wall from the base part; the bottom wall is provided with a bottom surface and an outer side surface corresponding to the two side walls, the connecting pins of each row of conductive terminals comprise first welding pads bent inwards and second welding pads bent outwards, the first welding pads of the two rows of conductive terminals are located in the range of the bottom surface, and the second welding pads extend outwards to form the outer side surface.

Compared with the prior art, the invention has the following beneficial effects: due to the design, in the transverse direction perpendicular to the longitudinal direction, the size of the insulating body is small, and the miniaturization trend of the card edge connector is facilitated.

[ description of the drawings ]

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

Fig. 2 is a partially enlarged view of the card edge connector shown in fig. 1.

Fig. 3 is an exploded perspective view of the card edge connector shown in fig. 1.

Fig. 4 is an enlarged view of the conductive terminal shown in fig. 3.

Fig. 5 is a partial bottom view of the card edge connector shown in fig. 1.

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

[ detailed description ] embodiments

Referring to fig. 1 to 5, a card edge connector 100 of the present invention is disclosed, which includes an elongated insulative housing 10, two rows of conductive terminals 20 fixed on the insulative housing 10, and a latch 30 pivotally connected to the insulative housing 10. The insulating body 10 includes a first sidewall 11 and a second sidewall 12 disposed opposite to each other, and a bottom wall 13 connecting the first sidewall 11 and the second sidewall 12. The first side wall 11 and the second side wall 12 form an upward-opening card slot 14 therebetween. The insulating body 10 further includes tower-shaped portions 15 at two ends of the slot 14, the slot 14 is used for inserting a card module, and the locking piece 30 is rotatably mounted on the tower-shaped portions 15.

The two rows of conductive terminals 20 are respectively located at two sides of the card slot 14. The conductive terminals 20 located on the same side of the card slot 14 include a first conductive terminal 21 and a second conductive terminal 22. The first conductive terminal 21 includes a first base 211 fixed in the insulating housing 10, a first elastic contact arm 212 extending from the first base 211 into the card slot 14, and a first pin 213 extending from the first base 211 out of the bottom wall 13 and bending inward. The second conductive terminal 22 includes a second base 221 held in the insulating housing 10, a second elastic contact arm 222 extending from the second base 221 into the card slot 14, and a second pin 223 extending from the second base 221 out of the bottom wall 13 and bending outward. So that the first pins 213 and the second pins 223 are arranged in a row. The first and

second pins

213 and 223 are alternately arranged in pairs in the longitudinal direction. In a transverse direction perpendicular to the longitudinal direction, the first pins 213 of one row of conductive terminals and the second pins 223 of the other row of conductive terminals are aligned with each other. The first lead 213 includes a first connecting portion 214 bent vertically from the first base 211 and a first solder pad 215 extending horizontally from the first connecting portion 214, the first solder pad 215 is widened in a longitudinal direction compared with the corresponding first connecting portion 214 to form a widened portion, the widened portions are respectively located at opposite sides of the adjacent first solder pads 215, so that a distance between the adjacent first solder pads 215 is increased, and an inner side of the adjacent first solder pads 215 is flush with a corresponding side of the first connecting portion 214. By such design, the adjacent first bonding pads 215 can be prevented from influencing each other during bonding. The second leg 223 includes a second connection portion 224 bent vertically from the second base portion 221 and a second solder pad 225 extending horizontally from the second connection portion 224, the second solder pad 225 is widened in a longitudinal direction to form a widened portion compared with the corresponding second connection portion 224, the widened portions are respectively located at opposite sides of the adjacent second solder pads 225, so that a distance between the adjacent second solder pads 225 is increased, and an inner side of the adjacent second solder pads 225 is flush with a corresponding side of the second connection portion 224. By such design, the adjacent second bonding pads 225 can be prevented from influencing each other during bonding. In the longitudinal direction, the spacing d1 between adjacent second connecting portions 224 is greater than the spacing d2 between adjacent first and second connecting

portions

214, 224. The spacing d1 between adjacent second connecting portions 224 is 1.25 mm. The bottom wall 13 has a bottom surface 131 and an outer side surface 132 corresponding to the first and

second side walls

11, 12. The first bonding pads 215 of the first leads 213 of the two rows of conductive terminals 20 are located within the range of the bottom surface 131, and the second bonding pads 225 of the second leads 223 extend outward to the outer side surface 132. With such a design, the size of the insulating body 10 in the transverse direction perpendicular to the longitudinal direction is small, which is beneficial for the miniaturization trend of the card edge connector 100. The card edge connector 100 further includes solder balls 40, and the solder balls 40 are disposed on the first and

second pads

215, 225. The first bonding pad 215 and the second bonding pad 225 are staggered in the longitudinal direction and are not located in the same row, so that the adjacent first and second bonding pads 215 and 2250 are not easily affected by each other during bonding, and poor bonding is avoided as much as possible.

In summary, the above is only a preferred embodiment of the present invention, and should not be limited to the scope of the present invention, and all the simple equivalent changes and modifications made according to the claims and the content of the specification should be covered by the scope of the present invention.

Claims

1. A card edge connector comprises a lengthwise insulating body and two rows of conductive terminals fixed on the insulating body, wherein the insulating body comprises two side walls which are oppositely arranged and extend along the lengthwise direction and a bottom wall which is connected with the two side walls, a clamping groove is formed between the two side walls, the two rows of conductive terminals are arranged one by one along the side walls, and each conductive terminal comprises a base part which is fixedly arranged in the insulating body, an elastic contact arm which extends into the clamping groove from the base part and a pin which extends out of the bottom wall from the base part; the diapire has the bottom surface and corresponds to the lateral surface of two lateral walls, its characterized in that: every two adjacent pins in the pins of each row of electric conduction terminals are arranged in pairs to form a first pin pair bending inwards in pairs and a second pin pair bending outwards in pairs, the first pin pairs of the two rows of electric conduction terminals are positioned in the range of the bottom surface, the second pin pairs extend outwards to form outer side surfaces, the pins comprise a connecting part bending vertically from the base part and a welding pad extending horizontally from the connecting part, the welding pad is widened in the longitudinal direction compared with the corresponding connecting part to form a widened part, the widened parts are respectively positioned at the opposite side edges of the adjacent welding pads to enlarge the distance between the adjacent welding pads, the inner side edges of the adjacent welding pads are flush with the corresponding side edges of the connecting part, the pins of each row of electric conduction terminals comprise a first pin and a second pin, the first pin comprises a first connecting part and a first welding pad, and the second pin comprises a second connecting part and a second welding pad, the distance between two adjacent second connecting parts is greater than the distance between the first connecting part and the second connecting part, and the first pin pairs and the second pin pairs in the same row of conductive terminals are alternately arranged at intervals in the lengthwise direction.

2. The card edge connector according to claim 1, wherein: in the transverse direction perpendicular to the longitudinal direction, the first pins of one row of conductive terminals are aligned with the second pins of the other row of conductive terminals.

3. The card edge connector according to claim 1, wherein: the card edge connector further comprises solder balls, and the solder balls are arranged on the first and second solder pads.

4. The card edge connector according to claim 1, wherein: the distance between two adjacent second connecting parts is 1.25 mm.