CN203445353U - Electric connector - Google Patents

Abstract

An electric connector is used for electrically connecting a chip module and a circuit board. The electric connector includes an insulation body, a plurality of conductive terminals accommodated in the insulation body, a shielding layer disposed in the insulation body and surrounding the periphery of the conductive terminals, and solder balls fixing the conductive terminals to the circuit board; the insulation body includes a butting surface and an installing surface which corresponds to the former, and terminal holes passing through the butting surface and the installing surface; the conductive terminals are accommodated in the terminal holes, and the conductive terminals include signal terminals and grounding terminals; and the electric connector further includes a connecting member which electrically connects the grounding terminals and the shielding layer.

Description

electrical connector

technical field

The utility model relates to an electric connector, in particular to an electric connector for electrically connecting a chip module to a printed circuit board.

Background technique

Planar grid array electrical connectors are widely used in the electronic field to electrically connect chip modules to circuit boards, so as to realize the transmission of signals and data between the chip modules and circuit boards. With the continuous development of electronic technology, the arrangement density of the conductive sheets of the chip module and the circuit board is increasing, and the size and height of the plane grid array electrical connector used in this field are getting smaller and smaller, and the terminal arrangement Density requires more and more density. In this case, when the electrical connector is connected to the signal transmission between the chip module and the circuit board, it will inevitably cause electromagnetic interference when adjacent terminals with small spacing are transmitting signals, and once electromagnetic interference occurs between adjacent signals, then It will definitely affect the quality of signal transmission between the chip module and the circuit board. Therefore, in order to ensure the integrity of signal transmission between the chip module and the circuit board, it is particularly important to have an electrical connector with a shielding device to prevent electromagnetic interference.

China Taiwan Patent Announcement No. M419248 discloses an electrical connector assembly capable of shielding electromagnetic interference, which includes an insulating body and conductive terminals accommodated in the insulating body. The terminal groove on the surface includes a first groove and a second groove, and the conductive terminal is accommodated in the first groove. The electrical connector also includes a metal shielding sheet accommodated in the second groove. The conductive terminal includes a main body, An upper elastic arm extending upward from the main body, a lower elastic arm bent downward from the main body, and a holding portion bent outward from one side of the main body, the upper elastic arm is bent upward and extended to have a contact portion and the lower The elastic arm bends downwards and extends to form a welding portion. The main part, the holding part, the upper elastic arm and the lower elastic arm of the conductive terminal are accommodated in the first groove. However, the shielding sheet is not in contact with the chip module and the circuit board, and the shielding sheet does not extend beyond the receiving surface and the mounting surface of the insulating body. The contact portion and the welding portion of the conductive terminal are exposed outside the insulating body, and the shielding sheet cannot shield Outside the receiving surface and the mounting surface, that is, the entire conductive terminal cannot be shielded, which affects the quality of signal transmission, and thus cannot ensure the integrity of signal transmission between the chip module and the circuit board. the

In view of the above situation, it is indeed necessary to provide a new type of electrical connector to solve the defects in the prior art solutions. the

Utility model content

The purpose of the utility model is to provide an electrical connector with better shielding effect.

The utility model is realized through the following technical proposals: an electrical connector for electrically connecting a chip module and a circuit board, the electrical connector includes an insulating body, a plurality of conductive terminals accommodated in the insulating body, and surrounding the conductive terminals The surrounding shielding layer and a number of solder balls to fix the conductive terminal to the circuit board are characterized in that: the conductive terminal includes a signal terminal and a grounding terminal, and the electrical connector also includes a wire that electrically connects the grounding terminal and the shielding layer connectors. the

The utility model further defines that: the grounding terminal includes a first main body, a first elastic arm bent upward from one side of the first main body, a first welding portion bent downward from the first main body, and a The other side of the first body part extends upwards to a first holding part, and the end of the first elastic arm is provided with a first contact part for contacting with the chip module. the

The utility model further defines that: the connector includes an upper connector electrically connected to the first contact part and a lower connector electrically connected to the first welding part. the

The utility model further defines that: the insulating body includes a docking surface and a mounting surface opposite to each other and a terminal hole penetrating through the docking surface and the mounting surface, and the terminal hole includes a receiving groove recessed upward from the mounting surface for receiving solder balls. the

The utility model further defines: the insulating body protrudes upwards from the docking surface and has several protrusions, and the protrusions are provided with grooves for receiving the upper connectors, and the protrusions are arranged around the terminal holes in a matrix arrangement. the

The utility model further defines that: the insulating body further includes an accommodating groove that is recessed from the mounting surface and connected to the accommodating groove, and the lower connector is accommodated in the accommodating groove. the

The utility model further defines that: the insulating body further includes an accommodating groove that is concave upward from the mounting surface and connected to the accommodating groove, the lower connector is accommodated in the accommodating groove, and the upper connector is electrically connected to the first contact part and the shielding layer, and the lower connector is electrically connected to the solder ball and the shielding layer. the

The utility model further defines that: the signal terminal includes a second main body, a second elastic arm bent upward from one side of the second main body, a second welding portion bent downward from the second main body, and a second elastic arm bent downward from the second main body. The other side of the second body part is a second holding part extending upwards, and the end of the second elastic arm is provided with a second contact part for contacting with the chip module. the

The utility model further defines that: the shielding layer is a plurality of shielding sheets, and the shielding sheets are assembled in the insulating body and surrounded by the conductive terminals in a plug-in manner. the

The utility model further defines: the connecting piece can conduct electricity and is made of metal material. the

Compared with the prior art, the electrical connector of the present invention has at least the following advantages: the connector of the electrical connector is electrically connected to the ground terminal and the shielding layer, so that after the electrical connector is assembled, it has a better shielding effect and can Ensure the integrity of signal transmission. the

Description of drawings

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

Fig. 2 is a perspective view from another angle of the electrical connector of the present invention. the

Fig. 3 is an exploded view of the electrical connector of the utility model. the

Fig. 4 is a perspective view of the insulating body of the electrical connector of the present invention. the

5 is a perspective view from another angle of the insulating body of the electrical connector of the present invention. the

Fig. 6 is a cross-sectional view of the electrical connector of the present invention along the direction A-A in the figure. the

Detailed ways

Please refer to Figures 1 to 3, the electrical connector 100 of the present invention is used to electrically connect the chip module to the circuit board (not shown), which includes an insulating body 1 and a number of conductive terminals assembled in the insulating body 1 3. The shielding layer 2 disposed in the insulating body 1 and surrounding the conductive terminal 3 and a plurality of solder balls 5 for fixing the conductive terminal 3 to the circuit board. The conductive terminals 3 include ground terminals 30 and signal terminals 31 . The electrical connector 100 further includes a connecting member 4 electrically connecting the ground terminal 30 and the shielding layer 2 . A preferred embodiment of the shielding layer 2 in this invention is a plurality of shielding sheets 20 inserted into the insulating housing 1 and surrounding the conductive terminals 3 .

Please refer to FIGS. 3 to 5 . The insulating body 1 is made of insulating plastic and has a roughly rectangular shape. The terminal hole 12 includes an accommodating groove 13 recessed upward from the mounting surface 11 for accommodating the solder ball 3 . The insulating body 1 protrudes upwards from the mating surface 10 and is provided with a plurality of protrusions 14 , and the protrusions 14 are provided with grooves 140 . The protrusions 14 are arranged around the terminal holes 12 and arranged in a matrix. The insulating body 1 further includes a receiving groove 15 recessed upward from the mounting surface 11 and connected to the receiving groove 13 . the

Please refer to FIG. 3 , the ground terminal 30 includes a first main body 300 , a first elastic arm 301 bent upward from one side of the first main body 300 , and a first elastic arm 301 bent downward from the first main body 300 . The soldering portion 302 and the first retaining portion 303 extending upward from the other side of the first body portion 300 , the end of the first elastic arm 301 is provided with a first contact portion 3010 for contacting with the chip module. The signal terminal 31 includes a second main body 310 , a second elastic arm 311 bent upward from one side of the second main body 310 , a second welding portion 312 bent downward from the second main body 310 , and a second elastic arm 311 bent downward from the second main body 310 . The second holding portion 313 extends upward from the other side of the main body portion 310 , and a second contact portion 3110 is formed at the end of the second elastic arm 311 to contact the chip module. the

The connector 4 includes an upper connector 41 electrically connected to the first contact portion 3010 and a lower connector 42 electrically connected to the first soldering portion 302 . the

The upper connector 41 of the electrical connector 100 of the present utility model is accommodated in the groove 140 of the protrusion 14 and is electrically connected to the first contact portion 3010 and the shielding sheet 20, and the lower connector 42 is accommodated in the accommodating groove 15 and is electrically connected. Connecting the solder ball 5 to the shielding piece 20 , that is, the grounding terminal 30 is connected to the upper connector 41 and the lower connector 42 respectively, is more favorable for shielding the signal terminal 31 . The shielding sheet 20 is disposed around the signal terminal 31 and the grounding terminal 30 is electrically connected to the shielding sheet 20 , so that the electrical connector 100 has a better shielding effect. the

The shielding layer 2 of the present invention can be a metal layer plated on the insulating body 1 and surrounding the conductive terminal 1 . The shielding sheet 20 in the preferred embodiment of the present invention can also be a whole, assembled in the insulating body 1 or embedded in the insulating body 1 . the

The connector 4 of the present invention is a conductive component including any kind of metal. the

It should be pointed out that the above description is only the best implementation mode of the utility model, not all implementation modes. Any equivalent changes adopted by those of ordinary skill in the art to the technical solution of the utility model by reading the specification of the utility model are all covered by the claims of the present invention. the

Claims (10)

1. an electric connector, be used for being electrically connected chip module and circuit board, described electric connector comprises insulating body, be somely housed in conducting terminal in insulating body, be around in the screen of conducting terminal surrounding and some conducting terminal is fixed to the tin ball on circuit board, it is characterized in that: described conducting terminal comprises signal terminal and earth terminal, described electric connector also comprises the connector that is electrically connected earth terminal and screen.

2. electric connector as claimed in claim 1, it is characterized in that: the first elastic arm that described earth terminal comprises the first main part, bending is extended in the first main part one side direction, from the first main part, bend the first weld part of extension downwards and from upwardly extending the first holding parts of the first main part opposite side, described the first elastic arm end is provided with the first contact site to contact with chip module.

3. electric connector as claimed in claim 2, is characterized in that: described connector comprises the upper connector being electrically connected with the first contact site and the lower connector being electrically connected with the first weld part.

4. electric connector as claimed in claim 3, it is characterized in that: described insulating body comprises interface and the installed surface being oppositely arranged and run through interface and the terminal hole of installed surface, described terminal hole comprises from installed surface depression and in order to accommodate the holding tank of tin ball upwards.

5. electric connector as claimed in claim 4, is characterized in that: described insulating body upwards protrudes out and is provided with some projections from interface, and described projection is provided with the groove of accommodating upper connector, and described projection is located at the surrounding of terminal hole and is matrix and arranges.

6. electric connector as claimed in claim 5, is characterized in that: described insulating body also comprises the storage tank that upwards caves in and be connected with holding tank from installed surface, and described lower connector is housed in storage tank.

7. electric connector as claimed in claim 4, it is characterized in that: described insulating body also comprises the storage tank that upwards caves in and be connected with holding tank from installed surface, described lower connector is housed in storage tank, described upper connector is electrically connected the first contact site and screen, and described lower connector is electrically connected tin ball and screen.

8. electric connector as claimed in claim 1, it is characterized in that: the second elastic arm that described signal terminal comprises the second main part, bending is extended in the second main part one side direction, from the second main part, bend the second weld part of extension downwards and from upwardly extending the second holding parts of the second main part opposite side, described the second elastic arm end is provided with the second contact site to contact with chip module.

9. electric connector as claimed in claim 1, is characterized in that: described screen is some shielding sheets, and described shielding sheet is located in insulating body with the mode group of pegging graft and is around in the surrounding of conducting terminal.

10. electric connector as claimed in claim 1, is characterized in that: described connector can conduct electricity and make for metal material.

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