CN202856091U - Electric connector and assembly thereof - Google Patents

Abstract

An electrical connector is used to electrically connect a chip module and a circuit board. The electrical connector includes an insulating body, a plurality of conductive terminals and shielding sheets accommodated in the insulating body. and a receiving groove that runs through the mating surface and the mounting surface, the receiving groove includes a first groove and a second groove, the conductive terminal is accommodated in the second groove of the insulating body, and the shielding sheet is accommodated in the first groove of the insulating body , the shielding piece is provided with a contact elastic arm extending from at least one side of the butt joint surface and the installation surface of the insulating body.

Description

Electrical connectors and their components

【Technical field】

The utility model relates to an electrical connector and its components, in particular to an electrical connector for connecting a chip module to a printed circuit board and its components.

【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 slot. 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.

In view of the above situation, it is indeed necessary to provide a new type of electrical connector and its components to solve the defects in the existing technical solutions.

【Content of utility model】

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

The electrical connector of the utility model is realized through the following technical solutions: an electrical connector, which is used to electrically connect the chip module and the circuit board, the electrical connector includes an insulating body, a number of conductive terminals and shielding sheets accommodated in the insulating body. The insulating body includes an oppositely arranged butt joint surface, a mounting surface, and a receiving groove passing through the docking surface and the mounting surface. The receiving groove includes a first groove and a second groove, and the conductive terminal is accommodated in the second groove of the insulating body. The shielding piece is accommodated in the first groove of the insulating body, and the feature is that the shielding piece is provided with a contact elastic arm extending from at least one side of the butt joint surface and the mounting surface of the insulating body.

The utility model further defines that: the shielding sheet includes a vertical plate-shaped body part, a support body bent from one side of the body part, and a contact terminal extended from the other side of the body part.

The utility model further defines that: the contact terminal includes a main body, and the elastic contact arm includes an elastic arm extending upward from the main body and a clamping arm bent downward from the main body.

The utility model further defines that: the elastic arm extends out of the butt joint surface of the insulating body, and the elastic arm includes a contact portion for electrically conducting with the chip module.

The utility model further defines that: the clamping arm extends out of the installation surface of the insulating body to be electrically connected with the circuit board.

The utility model further defines that: the main body of the contact terminal is connected to the main body of the shielding sheet, and there is a gap between the elastic arm and the clamping arm and the main body.

The utility model further defines: the first groove and the second groove of the terminal groove communicate with each other, and the first groove of the receiving groove is provided with a slot for holding the conductive terminal, and the second groove and the slot are opposite to each other at intervals It is provided that the conductive terminal includes a base, a first elastic arm extending upward from the base, a welding portion extending downward from the base, and a holding portion bent from one side of the base.

The utility model further defines: at most one of the butt joint surface and the mounting surface of the insulating body is plated with a metal layer, and the mounting surface of the insulating body protrudes downward and is arranged at intervals with the receiving groove and cooperates with the clamping arm boss.

The electrical connector of the utility model is realized through the following technical solutions: an electrical connector assembly, which includes a chip module and the electrical connector according to any one of claims 1 to 8, characterized in that: the chip module includes There is a bottom surface, the bottom surface is provided with several signal pads and welding elements surrounding the signal sheet, the signal pads of the chip module are electrically connected to the conductive terminals, the welding elements of the chip module are connected to the connector The contact elastic arm is electrically connected.

The electrical connector of the utility model is realized through the following technical solutions: an electrical connector assembly, which includes a circuit board and the electrical connector according to any one of claims 1 to 8, characterized in that: the circuit board includes There is a top surface, on which several signal sheets and welding elements surrounding the signal sheets are arranged, the signal sheets of the circuit board are electrically connected to the conductive terminals, and the welding elements of the circuit board are connected to the connecting terminals. The contact elastic arm of the device is electrically connected.

Compared with the prior art, the electrical connector of the utility model has at least the following advantages: the contact elastic arm on the shielding piece of the electrical connector extends out of at least one side of the butt surface and the installation surface, so that it can not only shield the At the same time, it can also be shielded to the part extending out of the mating surface and the mounting surface, thereby shielding the entire conductive terminal, achieving a better shielding effect and reducing the difficulty of design and simplifying the manufacturing process.

【Description of drawings】

Fig. 1 is a three-dimensional assembled view of the electrical connector of the present invention.

Fig. 2 is a three-dimensional assembled view of another angle of the electrical connector of the present invention.

Fig. 3 is a three-dimensional exploded view of the electrical connector of the utility model.

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

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

Fig. 6 is a perspective view of the electric connector of the present invention connecting the chip module and the circuit board.

Fig. 7 is a perspective view of another angle of connecting the chip module and the circuit board by the electrical connector of the present invention.

【Detailed ways】

1 to 7, the electrical connector 100 is used to electrically connect the chip module (not shown) and the circuit board (not shown). The conductive terminal 2 in 1, some shielding sheets 3 and some solder balls 4 for welding the conductive terminal 2 to the circuit board. The chip module includes a bottom surface (not shown), on which a plurality of signal pads 50 and upper solder balls 51 surrounding the signal pads 50 are disposed. The circuit board includes a top surface (not shown), on which a number of signal pads (not shown) and lower solder balls 61 surrounding the signal pads are arranged. The signal pad 50 and the signal plate are in electrical contact with the conductive terminal 2 and the upper solder ball 51 and the lower solder ball 61 are in electrical contact with the shielding plate 3 .

Please focus on Fig. 3 and Fig. 5, the insulative body 1 is made of insulating material, which includes a docking surface 10 and a mounting surface 11 oppositely arranged and a receiving groove 12 that runs through the docking surface 10 and the mounting surface 11, the receiving groove 12 It includes a first groove 13 and a second groove 14 communicating with each other. The first slot 13 is provided with a slot 140 for holding the conductive terminal 2 , and the second slot 14 is spaced opposite to the slot 140 . Both the mating surface 10 and the mounting surface 11 are plated with a metal layer (not shown). A boss 15 protrudes downward from the installation surface 11 of the insulating body 1 .

Please refer to FIG. 3, the conductive terminal 2 includes a base 20, a first elastic arm 21 bent and extended from the base 20, a welding portion 23 bent and extended from the base 20, and a side of the base 20. The extended holding portion 24 is bent. The first elastic arm 21 is provided with a first contact portion 22 in an arc shape and in contact with the signal pad 50 . The soldering portion 23 passes through the solder ball 4 to be in electrical contact with the signal pad. The conductive terminal 2 is received in the second slot 14 of the insulating body 1 and the holding portion 24 is received in the slot 140 .

The shielding sheet 3 includes a vertical plate-shaped body portion 30 , a support body 31 bent from one side of the body portion 30 , and a contact terminal (not labeled) extending from the other side of the body portion 30 . The contact terminal includes a main body 32, and an elastic contact arm (not shown) bent upward or downward from the main body 32. The elastic contact arm includes an elastic arm 33 extending upward from the main body 32 and an elastic arm 33 extending downward from the main body 32. The clamping arm 35. The elastic arm 33 includes a contact portion 34 that contacts the upper solder ball 51 of the chip module, and the clamping arm 35 contacts the lower solder ball 61 of the circuit board. The main body portion 32 of the contact terminal is connected to the main body portion 30 of the shielding sheet 3 and there is a gap 36 between the elastic arm 33 and the clamping arm 35 and the main body portion 30 .

1 to 5, when the conductive terminal 2 and the shielding sheet 3 of the electrical connector 100 of the present invention are assembled into the insulating body 1, the conductive terminal 2 is accommodated in the second groove 14 and the shielding sheet 3 is accommodated in the second groove 14. In a groove 13. The first contact portion 22 of the conductive terminal 2 extends out of the mating surface 10 and the end of the welding portion 23 extends out of the mounting surface 11 . The contact portion 34 of the shielding sheet 3 extends out of the mating surface 10 and the end of the clamping arm 35 extends out of the mounting surface 11 . The first slot 13 of the insulating body 1 includes an upper communication slot 131 for receiving the elastic arm 33 and a lower communication slot 132 for receiving the clamping arm 35 .

6 to 7, the electrical connector 100 of the present invention connects the chip module and the circuit board and the electrical connector 100 carries the chip module. The first contact portion 22 is in contact with the signal pad 50 and the contact portion 34 is in contact with the upper solder ball. 51 is in electrical contact, the soldering portion 23 of the conductive terminal 2 and the receiving groove 12 of the insulating body 1 jointly clamp the solder ball 4, and the clamping arm 35 of the shielding sheet 3 and the boss 15 of the insulating body 1 jointly clamp the lower solder ball 61 , so that the clamping arm 35 is electrically connected to the circuit board.

The elastic contact arm of the shielding sheet 3 of the electrical connector 100 of the present utility model extends from at least one side of the butt joint surface 10 of the insulating body 1 and the mounting surface 11, and the elastic arm 33 extends out of the butt joint surface 10 of the insulating body 1 to connect with the chip module. The upper solder ball 51 of the circuit board is electrically connected and the clamping arm 35 extends out of the mounting surface 11 of the insulating body 1 to electrically conduct with the lower solder ball 61 of the circuit board. The part of the terminal 2 can also be shielded to the part of the conductive terminal 2 that extends out of the butt joint surface 10 and the mounting surface 11 of the insulating body 1, that is, the entire conductive terminal 2 is shielded, thereby achieving a better shielding effect and reducing the difficulty of design. , Simplify the process.

In addition, the upper solder ball 51 and the lower solder ball 61 of the electrical connector 100 of the present invention can be any kind of soldering elements including metal contact ends.

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.

Claims (10)

1. electric connector, be used for being electrically connected chip module and circuit board, this electric connector comprises insulating body, be housed in some conducting terminals and shielding sheet in the insulating body, described insulating body comprises the interface that is oppositely arranged, installed surface and run through interface and the accepting groove of installed surface, this accepting groove comprises the first groove and the second groove, described conducting terminal is housed in the second groove of insulating body, described shielding sheet is housed in the first groove of insulating body, it is characterized in that: described shielding sheet is provided with the interface that extends insulating body and the elastic contact arm of at least one side of installed surface.

2. electric connector as claimed in claim 1 is characterized in that: the supporter that described shielding sheet comprises vertically tabular body, arrange from body one side bending and extend the contact terminal that arranges from the opposite side of body.

3. electric connector as claimed in claim 2, it is characterized in that: described contact terminal comprises main part, described elastic contact arm comprises that the upwardly extending elastic arm of autonomous body and autonomous body bend the clamping limb of extension downwards.

4. electric connector as claimed in claim 3 is characterized in that: described elastic arm extends the interface of insulating body and elastic arm and comprises contact site in order to electrically conduct with chip module.

5. electric connector as claimed in claim 4, it is characterized in that: described clamping limb extends the installed surface of insulating body to electrically conduct with circuit board.

6. electric connector as claimed in claim 3 is characterized in that: the main part of described contact terminal link to each other with the body of shielding sheet and elastic arm and clamping limb and body between have the gap.

7. electric connector as claimed in claim 1, it is characterized in that: the first groove and second groove of described terminal groove are interconnected, and the first groove of accepting groove is provided with the slit in order to the fixing conducting terminal, described the second groove and this slit are the interval and are oppositely arranged, described conducting terminal comprise base portion, by base portion extend upward the first elastic arm of setting, the weld part that arranged to downward-extension by base portion and the holding parts that arranged by a side bending of base portion.

8. electric connector as claimed in claim 5, it is characterized in that: one of them is coated with metal level at least on the interface of described insulating body and the installed surface, and the installed surface of described insulating body protrudes out downwards and is provided with the boss that is set in distance and cooperates with clamping limb with accepting groove.

9. electric coupler component, it comprises that chip module reaches such as each described electric connector in the claim 1 to 8, it is characterized in that: described chip module includes a bottom surface, be provided with several signal pads on this bottom surface and be around in signal patch soldered elements all around, the signal pad of described chip module is electrically connected with described conducting terminal, and the soldered elements of this chip module is electrically connected with the contact resilient arm of this connector.

10. electric coupler component, it comprises that circuit board reaches such as each described electric connector in the claim 1 to 8, it is characterized in that: described circuit board includes an end face, be provided with several signal patch on this end face and be around in signal patch soldered elements all around, the signal patch of described circuit board is electrically connected with described conducting terminal, and the soldered elements of this circuit board is electrically connected with the contact resilient arm of this connector.

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