TWM447018U - Electrical connector - Google Patents

Abstract

An electrical connector for electrically connecting a chip module to a circuit board includes an insulating housing, a number of terminals received in the insulating housing and a number of solder balls. The insulating housing includes an upper surface, a lower surface and a number of receiving holes passing through the upper surface and the lower surface. Each of the terminals includes an outer surface coated with a metal coating. Each of the terminals includes a soldering portion. The soldering portion includes a bottom surface located on the lower surface of the insulating housing. The bottom surface is formed by the removal of the terminal carrier. The bottom surface exposes the material that the terminals made of. The soldering portion matches with 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.

A prior art, such as the Chinese Patent Publication No. 201937059, discloses an electrical connector related to the present invention for electrically connecting a chip module to a circuit board, the electrical connector comprising an insulating body and a plurality of holdings in the insulating body Conductive terminals and a plurality of solder balls. The conductive terminal includes a body portion and a solder portion extending downward from the body portion for soldering to the circuit board, the solder portion including a clamping arm that holds the solder ball. The conductive terminal is further provided with a portion connected to the strip, that is, the strip is connected to both sides of the upper end of the main body portion of the conductive terminal. After the strip is removed, the solder ball is heated to solder the soldered portion of the conductive terminal to the circuit board to connect the electrical connector to the circuit board.

However, in the prior art, since the soldering portion of the conductive terminal is provided with the clamping arm for holding the solder ball, the structure of the soldering portion is complicated, and the portion connected to the strip is separately disposed in other portions of the conductive terminal, thereby conducting The structure of the terminal is relatively complicated and takes up a large space, which is not conducive to the development trend of miniaturization of the electrical connector.

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 having a structurally simple conductive terminal.

The electrical connector of the present invention can be realized by the following technical solutions: an electrical connector for electrically connecting a chip module to a circuit board, the electrical connector comprising an insulating body and a plurality of conductive terminals and a plurality of conductive terminals held in the insulating body a solder ball, the insulating body includes an upper surface, a lower surface, and a plurality of terminal receiving holes penetrating the upper and lower surfaces, the outer surface of the conductive terminal is plated with a metal plating layer, and the conductive terminal includes a soldering terminal for soldering the electrical connector a soldering portion on the circuit board, the soldering portion including a bottom surface of the lower surface of the insulating body, the bottom surface being formed after the tape is folded away, which exposes a material used for manufacturing the conductive terminal, the soldering portion and the tin The ball matches.

As a further improvement of the present invention, the soldering portion and the insulating body jointly hold the solder ball.

As a further improvement of the present invention, the soldering portion is used to mechanically clamp the solder ball after the strip is removed.

As a further improvement of the present invention, a pre-break line is disposed between the strip and the welded portion, and the bottom surface is formed after the strip is broken along the pre-break line.

As a further improvement of the present invention, the pre-break line is a V-shaped slit.

As a further improvement of the present invention, the soldering portion includes a side surface facing the terminal receiving hole, and the side surface is provided with a dimple.

As a further improvement of the present invention, the electrical connector is provided with a solder ball corresponding to each of the conductive terminals, and the solder ball is in contact with the recess and is retained in the insulating body.

As a further improvement of the present invention, the metal plating layer is a gold plating layer, and the material used for manufacturing the conductive terminal is copper.

As a further improvement of the present invention, the conductive terminal further includes a holding portion extending upward from the soldering portion, and the soldering portion is in the same plane as the holding portion.

As a further improvement of the present invention, the conductive terminal further includes a connecting portion extending upward from the holding portion and a contact portion extending obliquely upward from the connecting portion.

As a further improvement of the present invention, the holding portion is provided with a plurality of barbs, and the barbs cooperate with the insulating body to hold the conductive terminals in the insulating body.

As a further improvement of the present invention, the contact portion extends out of the upper surface of the insulating body.

As a further improvement of the present invention, the terminal receiving hole is provided with an inclined guiding surface at a lower surface of the insulating body.

As a further improvement of the present invention, the terminal receiving hole is provided with a groove at the welding portion of the conductive terminal, and the groove is disposed so as to have a gap between the welded portion and the insulating body.

Compared with the prior art, the conductive terminal of the present electrical connector includes a soldering portion for soldering the electrical connector to the circuit board, and the tape is connected to the lower end of the soldering portion, and the section after the strip is removed is The bottom surface of the welded portion is inserted into the solder ball, and the soldering portion mechanically clamps the solder ball into the insulating body. Since the strip of the conductive terminal is connected to the lower end of the soldering portion, the ball is directly transferred after the strip is removed, so that the soldering portion of the solder ball is simple in structure and the conductive terminal does not need to be separately connected with the strip, so the conductive terminal structure Simple, it is conducive to the development trend of miniaturization of electrical connectors.

Referring to the first to sixth figures, the present electrical connector 100 is used to electrically connect the chip module to the circuit board. The electrical connector 100 includes an insulative housing 1 and a plurality of conductive terminals 2 and a plurality of solder balls 3 held in the insulative housing 1 .

Referring to the first and second figures, the insulative housing 1 has an upper surface 10, a lower surface 12, and a plurality of terminal receiving holes 11 extending through the upper and lower surfaces 10, 12. The terminal receiving hole 11 is provided with an inclined guiding surface 110 at the lower surface 12 of the insulative housing 1 , and the guiding surface 110 can guide when the conductive terminal 2 and the solder ball 3 are assembled into the terminal receiving hole 11 . effect. The terminal receiving hole 11 further includes a groove 111 for providing a deformation space for deformation of the welded portion 22 when the solder ball 3 is assembled to the welded portion 22 of the conductive terminal 2.

Referring to the third and fourth figures, the conductive terminal 2 includes a holding portion 21, a welded portion 22 extending downward from the holding portion 21, a connecting portion 23 extending upward from the holding portion 21, and being upwardly connected by the connecting portion 23. The contact portion 24 extending and extending is obliquely bent. The holding portion 21 is located in the same vertical plane as the welded portion 22, which is perpendicular to the upper and lower surfaces 10, 12 of the insulating body 1. A plurality of barbs 211 are disposed on both sides of the holding portion 21 for interference fit with the insulative housing 1 to hold the conductive terminals 2 in the terminal receiving holes 11 . The welded portion 22 has a side surface 221 and a bottom surface 222. The side surface 221 faces the terminal receiving hole 11 for contacting the solder ball 3. The groove 111 of the terminal receiving hole 11 is located at the other side opposite to the side surface 221, and the groove 111 is disposed such that the gap between the welded portion 22 and the insulating body 1 provides a deformation space for the elastic deformation of the welded portion 22. The side surface 221 is provided with a spherical recess 2210 for holding and positioning the solder ball 3. The bottom surface 222 is formed by folding the tape 4 away.

Referring to the fourth figure, before the conductive terminal 2 is inserted into the terminal receiving hole 11 of the insulative housing 1, the tape 4 is connected to the soldering portion 22 of the conductive terminal 2. The portion of the strip 4 that is connected to the welded portion 22 is provided with a pre-break line 40, which is a V-shaped slit. The outer surface of the conductive terminal 2 is plated with a metal plating layer, which is usually a gold plating layer, which is used for improving the wear resistance and corrosion resistance of the conductive terminal 2 to ensure good signal transmission.

Referring to the fifth figure, the conductive terminal 2 is inserted into the insulative housing 1 by the tape 4, and the bottom surface 222 of the soldering portion 22 of the conductive terminal 2 is formed after the strip 4 is folded along the pre-break line 40. Since the bottom surface 222 is formed directly after the tape 4 is broken, the bottom surface 222 has no metal plating, which reveals the material used to make the conductive terminals 2, which is usually copper.

Please refer to the second to fifth figures. When assembling, firstly, the conductive terminals 2 connected to the strip 4 are assembled from the lower surface 12 of the insulative housing 1 into the terminal receiving holes 11 by interference fit of the barbs 211. The fixed contact portion 24 of the conductive terminal 2 extends out of the upper surface 10 of the insulating body 1, and then the strip 4 is broken along the pre-break line 40 to form the bottom surface 222 of the soldering portion 22, and the bottom surface 222 is located on the lower surface 12 of the insulating body 1. Finally, the solder ball 3 is assembled from the lower surface 12 of the insulative housing 1 into the terminal receiving hole 11, and the solder ball 3 is in contact with the recess 2210 on the side surface 221 of the soldering portion 22, and the soldering portion 22 and the insulating body 1 are The solder ball 3 is mechanically held in the terminal receiving hole 11. The guiding surface 110 of the terminal receiving hole 11 is arranged to facilitate the assembly of the conductive terminal 2 and the solder ball 3 into the terminal receiving hole 11. Since the conductive terminal 2 of the present invention directly clips the ball 22 after the strip 4 is folded, the structure of the conductive terminal 2 is simple.

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‧‧‧ upper surface

12‧‧‧ Lower surface

11‧‧‧Terminal receiving hole

110‧‧‧ Guide surface

111‧‧‧ Groove

2‧‧‧Electrical terminals

21‧‧‧ Holding Department

211‧‧‧ barbed

22‧‧‧Weld Department

221‧‧‧ side

2210‧‧‧ pit

222‧‧‧ bottom

23‧‧‧Connecting Department

24‧‧‧Contacts

3‧‧‧ solder balls

4‧‧‧Material

40‧‧‧Pre-broken line

The first figure is a three-dimensional combination diagram of the present electrical connector;

The second figure is a three-dimensional combination diagram of another angle of the present electrical connector;

The third figure is an exploded view of the original electrical connector;

The fourth figure is a perspective view of the conductive terminal set of the present invention being connected to the insulating body before being inserted into the insulating body;

The fifth figure is a perspective view of the strip removed after the conductive terminal set of the present electrical connector is inserted into the insulating body;

Figure 6 is a cross-sectional view of the present electrical connector taken along line VI-VI of the first figure.

1‧‧‧Insulating body

10‧‧‧ upper surface

11‧‧‧Terminal receiving hole

110‧‧‧ Guide surface

111‧‧‧ Groove

12‧‧‧ Lower surface

2‧‧‧Electrical terminals

22‧‧‧Weld Department

221‧‧‧ side

2210‧‧‧ pit

4‧‧‧Material

40‧‧‧Pre-broken line

Claims (14)

An electrical connector for electrically connecting a chip module to a circuit board, the electrical connector comprising:
An insulating body, wherein the insulating body is provided with an upper surface, a lower surface, and a plurality of terminal receiving holes penetrating the upper and lower surfaces;
a plurality of conductive terminals are fixed in the terminal receiving hole, the outer surface of the conductive terminal is plated with a metal plating layer, the conductive terminal includes a soldering portion for soldering the electrical connector to the circuit board; and a plurality of solder balls, Cooperating with the conductive terminals;
Wherein the soldering portion includes a bottom surface of the lower surface of the insulative housing, the bottom surface is formed after the strip is folded, and the material used for manufacturing the conductive terminal is exposed, and the soldering portion cooperates with the solder ball . The electrical connector of claim 1, wherein the soldering portion and the insulating body together clamp the solder ball. The electrical connector of claim 1, wherein the soldering portion is used to mechanically clamp the solder ball after the strip is removed. The electrical connector of claim 1, wherein a pre-break line is provided between the strip and the welded portion, and the bottom surface is formed after the strip is broken along the pre-break line. The electrical connector of claim 4, wherein the pre-break line is a V-shaped slit. The electrical connector of claim 1, wherein the soldering portion includes a side surface facing the terminal receiving hole, and the side surface is provided with a recess. The electrical connector of claim 6, wherein the solder ball is in contact with the dimple and is retained in the insulative body. The electrical connector of claim 1, wherein the metal plating layer is a gold plating layer, and the material used for manufacturing the conductive terminal is copper. The electrical connector of claim 1, wherein the conductive terminal comprises a retaining portion extending upward from the soldering portion, the soldering portion being in the same vertical plane as the retaining portion. The electrical connector of claim 9, wherein the conductive terminal further comprises a connecting portion extending upward from the retaining portion and a contact portion extending obliquely upward from the connecting portion. The electrical connector of claim 9, wherein the holding portion is provided with a plurality of barbs, and the barbs cooperate with the insulating body to hold the conductive terminals in the insulating body. The electrical connector of claim 10, wherein the contact portion extends beyond an upper surface of the insulative body. The electrical connector of claim 1, wherein the terminal receiving hole is provided with an inclined guiding surface at a lower surface of the insulating body. The electrical connector of claim 1, wherein the terminal receiving hole is provided with a groove at a welded portion of the conductive terminal, and the groove is disposed such that a gap exists between the welded portion and the insulating body.