TWM450850U - Electrical connector - Google Patents

Abstract

An electrical connector for electrically connecting a chip module to a printed circuit board includes an insulative housing, a number of terminals received in the insulative housing and a number of solder balls. The insulative housing has a top surface, a bottom surface and a receiving hole penetrated the top surface and the bottom surface. The terminals received in the receiving holes includes a base portion, a spring arm extending upwardly and bending from the base portion and a solder tail extending downwardly and bending from the base portion. The solder ball received in the receiving hole. The solder tail has a free end for compressing the solder ball. The whole of the solder ball is located at one side of the free end and the free end is located between the base portion and the solder ball.

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an electrical connector for electrically connecting a chip module to a circuit board.

The electrical connector associated with the present invention is used to electrically connect the chip module and the circuit board, as disclosed in Chinese Patent Publication No. 2872630Y. The electrical connector includes an insulative housing and a plurality of conductive terminals received in the insulative housing. The conductive terminal includes a main body portion, a stopper portion extending vertically downward from the main body portion, and a contact portion extending upward from the main body portion. The insulative housing is provided with a plurality of terminal receiving holes and a plurality of solder ball receiving portions that communicate with the terminal receiving holes. The blocking portions of the terminal ends and the side walls of the solder ball receiving portion form a receiving space in which the solder balls are movably received.

The stopper portion seals a part of the opening of the solder ball receiving groove, and the solder ball is in contact with the stopper portion. Therefore, when the solder ball is soldered, the solder ball becomes a liquid tin liquid, and a gap is formed between the conductive terminal and the terminal receiving hole. The tin liquid climbs along the stop portion along the stopper portion along the gap between the conductive terminal and the terminal receiving hole, and is likely to cause a siphon phenomenon, thereby affecting the electrical connection between the electrical connector and the circuit board.

In view of this, it is indeed necessary to provide an improved electrical connector to overcome the deficiencies of the prior art.

The purpose of this creation is to provide an electrical connector that prevents siphoning.

The electrical connector of the present invention can be realized by the following technical solution: an electrical connector for electrically connecting a chip module and a circuit board, the electrical connector comprising: an insulating body having oppositely disposed top and bottom surfaces and a plurality of a terminal receiving groove extending through the top surface and the bottom surface; the plurality of conductive terminals are received in the terminal receiving groove of the insulating body, and include a main body portion, an elastic arm bent upward from the main body portion, and a connection extending downward from the main body portion The plurality of solder balls are received in the terminal receiving groove; the connecting portion has a free end that abuts the solder ball, the solder ball is entirely located on one side of the free end and the free end is located between the main body portion and the solder ball.

The electrical connector of the present invention can also be implemented by the following technical solutions: an electrical connector for electrically connecting the chip module and the circuit board, the electrical connector comprising: an insulating body having oppositely disposed top and bottom surfaces and a plurality of terminal receiving slots extending through the top surface and the bottom surface; the plurality of conductive terminals are received in the terminal receiving slots of the insulative housing, and include a main body portion, an elastic arm that is bent upwardly from the main body portion, and is bent downwardly from the main body portion a connecting portion; the plurality of solder balls are received in the terminal receiving groove; the connecting portion is arranged in an arc shape, and the connecting portion has a free end that abuts the solder ball and the curved outermost end tangential line is more opposite to the center of the solder ball Near the bottom surface of the insulative body.

Compared with the prior art, the free end of the connecting portion of the electrical connector of the present invention abuts the solder ball, the whole of the solder ball is located on one side of the free end and the free end is located between the main body and the solder ball, thereby making the solder ball Keeping away from the main body portion and preventing the solder ball from melting into tin liquid, the joint portion climbs toward the main body portion, thereby preventing the siphon phenomenon.

The first to sixth embodiments show the electrical connector 100 of the present invention for electrically connecting a chip module (not shown) and a circuit board (not shown). The electrical connector 100 includes an insulative body 1. The plurality of conductive terminals 2 housed in the insulative housing 1 and a plurality of solder balls 3 mechanically held in the insulative housing 1 .

Referring to the third and fourth figures, the insulative housing 1 is substantially rectangular, and has a top surface 10 and a bottom surface 11 opposite to each other, and a plurality of terminal receiving slots 12 penetrating the top surface 10 and the bottom surface 11. The conductive terminal 2 is received in the terminal receiving groove 12 , and the terminal receiving groove 12 includes a receiving groove 13 and a holding groove 14 communicating with the receiving groove 13 . The insulative housing 1 further includes a plurality of solder ball receiving grooves 15 penetrating through the bottom surface 11 and having a stepped shape with the bottom surface 11, and a through groove 16 penetrating the top surface 10 and forming a stepped shape with the top surface 10. The through grooves 16 communicate with each other.

The conductive terminal 2 includes a flat body portion 20, an elastic arm 21 bent upward from the main body portion 20, a connecting portion 22 bent downward from the main body portion 20, and an upward extending from the opposite side of the main body portion 20. The holding portion 23 is provided. The main body portion 20 is received in the accommodating groove 13 and the conductive terminal 2 is fixed in the holding groove 14 by the holding portion 23 . The elastic arm 21 includes a bent portion 210 that is bent and extended from one side of the main body portion 20 toward the main body portion 20, and a pressing portion 211 that is bent and extended from the other side of the main body portion 20 from the bent portion 210 and the self-pressing portion. The 211 bends the extended contact portion 212 upward. The contact portion 212 is provided with a recess 213 to improve the stability of the wafer module when it contacts the contact portion 212. The connecting portion 22 has a free end 222. The connecting portion 22 has a certain thickness and is disposed in a semi-annular shape. The solder ball 3 is entirely located on one side of the free end 222 and the free end 222 is located between the main body portion 20 and the solder ball 3. The connecting portion 22 includes an extending portion 223 that is bent downward from the main body portion 20 and a resisting portion 224 that is bent upwardly from the extending portion 223 . Both the extension portion 223 and the abutting portion 224 have the inner side 220 and the outer side 221 described above. The free end 222 is provided on the abutting portion 224. There is a gap 225 between the free end 222 of the connecting portion 22 and the main body portion 20 to move the solder ball 3 away from the main body portion 20.

Referring to FIG. 5, during assembly, the conductive terminals 2 are assembled from the top surface 10 of the insulative housing 1 into the terminal receiving slots 12 of the insulative housing 1. The solder balls 3 are assembled from the bottom surface 11 of the insulative housing 1 into the tin of the insulative housing 1. The ball accommodates the groove 15. After the assembly is completed, the holding portion 23 is retained in the holding groove 14 and the main body portion 20 is received in the receiving groove 13 . The outer side 221 of the free end 222 of the resisting portion 224 is in contact with the solder ball 3 and resists the solder ball 3 , and borrows The stepped solder ball receiving groove 15 holds the solder ball 3 to fix the solder ball 3 to the insulative housing 1. The connecting portion 22 has a free end 222 that abuts the solder ball 3, and the curved bottom end tangential line of the connecting portion 22 is closer to the bottom surface 11 of the insulating body 1 with respect to the center of the solder ball 3. The connecting portion 22 has elasticity and the resisting portion 224 is elastically deformed with respect to the solder ball 3 when the solder ball 3 is placed in the solder ball receiving groove 15. When the solder ball 3 is soldered to the circuit board, the solder ball 3 is soldered to a liquid tin liquid 4, and the tin liquid 4 climbs along the abutting portion 224 and stops climbing at the boundary between the resisting portion 224 and the extending portion 223. Thereby, the tin liquid 4 does not climb up to the main body portion 20 of the conductive terminal 2 and the occurrence of siphoning can be avoided.

In summary, this creation is in line with the new patent requirements, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and those who are familiar with the skill of the present invention are equivalent to the equivalent modifications or changes made by the spirit of the present creation. It should be covered by the following patent application.

100‧‧‧Electrical connector

1‧‧‧Insulating body

10‧‧‧ top surface

11‧‧‧ bottom

12‧‧‧Terminal receiving slot

13‧‧‧ accommodating slots

14‧‧‧ holding slot

15‧‧‧ solder ball receiving slot

16‧‧‧through slot

2‧‧‧Electrical terminals

20‧‧‧ Main body

21‧‧‧Flexible arm

210‧‧‧Bends

211‧‧‧ Pressing Department

212‧‧‧Contacts

213‧‧‧ Groove

22‧‧‧Connecting Department

220‧‧‧ inside

221‧‧‧ outside

222‧‧‧Free end

223‧‧‧Extension

224‧‧‧Resistance Department

225‧‧‧ gap

23‧‧‧Retention Department

3‧‧‧ solder balls

4‧‧‧ tin liquid

The first figure is a three-dimensional combination of the original electrical connector.

The second figure is a perspective assembled view of another angle of the present electrical connector.

The third figure is an exploded perspective view of the present electrical connector.

The fourth figure is an exploded perspective view of another angle of the present electrical connector.

The fifth figure is a cross-sectional view of the present electrical connector along the V-V direction in the first figure.

The sixth figure is a cross-sectional view of the solder ball of the present invention, which is melted in the V-V direction in the first figure.

100‧‧‧Electrical connector

1‧‧‧Insulating body

12‧‧‧Terminal receiving slot

15‧‧‧ solder ball receiving slot

16‧‧‧through slot

2‧‧‧Electrical terminals

20‧‧‧ Main body

21‧‧‧Flexible arm

210‧‧‧Bends

211‧‧‧ Pressing Department

212‧‧‧Contacts

213‧‧‧ Groove

22‧‧‧Connecting Department

220‧‧‧ inside

221‧‧‧ outside

222‧‧‧Free end

223‧‧‧Extension

224‧‧‧Resistance Department

225‧‧‧ gap

23‧‧‧Retention Department

3‧‧‧ solder balls

Claims (26)

An electrical connector comprising:
An insulating body having a top surface and a bottom surface disposed opposite to each other and a plurality of terminal receiving grooves penetrating the top surface and the bottom surface;
The plurality of conductive terminals are received in the terminal receiving groove of the insulative housing, and include a main body portion, an elastic arm bent upward from the main body portion, and a connecting portion bent downward from the main body portion; and a plurality of solder balls received in the terminal In the receiving trough;
Wherein, the connecting portion has a free end that abuts the solder ball, the solder ball is entirely located on one side of the free end and the free end is located between the main body portion and the solder ball. The electrical connector of claim 1, wherein the connecting portion includes an extending portion that is bent downward from the main body portion and a resisting portion that is bent upwardly from the extending portion. The electrical connector of claim 2, wherein the outer end of the free end of the abutting portion abuts the solder ball. The electrical connector of claim 2, wherein the solder ball is soldered to a liquid tin liquid, and the tin liquid stops climbing at the interface between the abutting portion and the extending portion. The electrical connector of claim 2, wherein the free end of the abutting portion is located above a bottom surface of the insulative housing. The electrical connector of claim 2, wherein a gap is formed between the end of the abutting portion and the body portion. The electrical connector of claim 1, wherein the conductive terminal further comprises a retaining portion extending upward from an opposite side of the body portion and fixing the conductive terminal. The electrical connector of claim 7, wherein the terminal receiving groove includes a receiving groove for receiving the main body portion of the conductive terminal, and a holding groove for communicating with the receiving groove and accommodating the holding portion of the conductive terminal. The electrical connector of claim 2, wherein the insulative housing further comprises a plurality of solder ball receiving slots extending through the bottom surface, the solder ball receiving slots being stepped and cooperating with the solder balls. The electrical connector of claim 9, wherein the insulative housing further comprises a plurality of through slots extending through the top surface, the through slots being stepped and in communication with the top surface. The electrical connector of claim 1, wherein the elastic arm of the conductive terminal comprises a bent portion extending upward from the main body portion toward one side of the main body portion, and the bent portion from the bent portion to the main body portion The pressing portion that is bent and extended on the other side and the contact portion that is bent and extended from the pressing portion. The electrical connector of claim 11, wherein the contact portion is provided with a groove for increasing contact stability. The electrical connector of claim 1, wherein the connecting portion is disposed in a semi-annular shape. An electrical connector comprising:
An insulating body having a top surface and a bottom surface disposed opposite to each other and a plurality of terminal receiving grooves penetrating the top surface and the bottom surface;
The plurality of conductive terminals are received in the terminal receiving groove of the insulative housing, and include a main body portion, an elastic arm bent upward from the main body portion, and a connecting portion bent downward from the main body portion; and a plurality of solder balls received in the terminal In the receiving trough;
Wherein, the connecting portion is arranged in an arc shape, and the connecting portion has a free end that abuts the solder ball and the curved outermost end tangential line is closer to the bottom surface of the insulating body than the center of the solder ball. The electrical connector of claim 14, wherein the connecting portion comprises an extending portion extending downward from the main body portion and an abutting portion extending upwardly from the extending portion, the connecting portion having an autonomous One side of the body portion extends downwardly from the inner side and extends from the other side of the main body portion to the outer side, and the outer side of the free end of the abutting portion abuts the solder ball. The electrical connector of claim 15, wherein the solder ball is soldered to a liquid tin liquid, and the tin liquid stops climbing at a boundary between the abutting portion and the extending portion. The electrical connector of claim 15, wherein the free end of the abutting portion is located above a bottom surface of the insulative housing. The electrical connector of claim 15, wherein a gap is formed between the end of the abutting portion and the body portion. The electrical connector of claim 15, wherein the conductive terminal further comprises a retaining portion extending upward from an opposite side of the body portion and fixing the conductive terminal. The electrical connector of claim 19, wherein the terminal receiving groove comprises a receiving groove for receiving the main body portion of the conductive terminal, and a holding groove for communicating with the receiving groove and accommodating the holding portion of the conductive terminal. The electrical connector of claim 15, wherein the insulative housing further comprises a plurality of solder ball receiving slots extending through the bottom surface, the solder ball receiving slots being arranged in a stepped manner and cooperating with the solder balls. The electrical connector of claim 21, wherein the insulative housing further comprises a plurality of through slots extending through the top surface, the through slots being stepped and in communication with the top surface. The electrical connector of claim 14, wherein the elastic arm of the conductive terminal comprises a bent portion extending upward from the main body portion and extending toward one side of the main body portion, and the self-bending portion is directed to the main body portion. The pressing portion that is bent and extended on the other side and the contact portion that is bent and extended from the pressing portion. The electrical connector of claim 23, wherein the contact portion is provided with a groove for increasing contact stability. The electrical connector of claim 14, wherein the connecting portion is disposed in a semi-annular shape. The electrical connector of claim 21, wherein the connecting portion has elasticity and the resisting portion is elastically deformed relative to the solder ball when the solder ball group is loaded into the solder ball receiving groove.