CN1316508C

CN1316508C - Conductive rubber and electronic component using same

Info

Publication number: CN1316508C
Application number: CNB2004100271565A
Authority: CN
Inventors: 朱德祥
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2004-05-11
Filing date: 2004-05-11
Publication date: 2007-05-16
Anticipated expiration: 2024-05-11
Also published as: CN1571074A

Abstract

The present invention discloses conductive rubber and an electronic element for the conductive rubber. The conductive rubber of the present invention comprises an elastic basic body filling with conductive powder and a strip-shaped conductive body which is approximately and vertically arranged. The electronic element of the present invention comprises the conductive rubber, and the conductive rubber is further provided with the strip-shaped conductive body which is approximately and vertically arranged. Because the strip-shaped conductive body is arranged in the conductive rubber which is approximately and vertically arranged, the equivalent path of current passing through the conductive rubber is shortened under the condition of the conductive rubber with a certain volume, an equivalent cross sectional area is increased, and thus, impedance is reduced.

Description

A kind of electric connector

[technical field]

The invention relates to a kind of electric connector that is provided with conductive rubber.

[background technology]

At present, use the electric connector of conductive rubber, its conductive rubber is generally by elastic caoutchouc and place the conductive powder (as metal dust or carbon dust) in the elastic caoutchouc to constitute.But, make the use of conductive rubber be very limited because its impedance is bigger.

Along with further developing of science and technology, want conductor can bear more and more higher electric current, and as the conductive rubber of conductor because the restriction of its internal structure, the current lead-through path is longer relatively, cross-sectional area is less, makes its impedance bigger, under the certain situation of voltage, can not produce bigger electric current, have a strong impact on its application.

Therefore, be necessary to invent a kind of new electric connector that is provided with conductive rubber, to satisfy the demand.

[summary of the invention]

The object of the present invention is to provide the less electric connector that is provided with conductive rubber of a kind of impedance.

For achieving the above object, electric connector of the present invention, comprise body and be positioned at some conductive rubbers on the body, described conductive rubber comprises the elastic matrix that is filled with conductive powder, further be provided with the electric conductor of strip in the elastic matrix, institute's electric conductor is vertically placed, and electric conductor and described conductive rubber are contour, and is fixed on the body.

This also can be embodied as: a kind of electric connector, comprise body and be positioned at some conductive rubbers on the body, described conductive rubber comprises the elastic matrix that is filled with conductive powder, further be provided with the electric conductor of strip in the elastic matrix, described electric conductor is vertically placed, and be fixed on the body, and the back by compression electric conductor of conductive rubber partly is positioned at the conductive rubber outer surface.

The present invention is by planting the electric conductor of strip in conductive rubber, and electric conductor is roughly vertically placed, make that under the situation of conductive rubber given volume, electric current shortens by the equivalent path of conductive rubber, and equivalent cross-sectional area increases, thereby reduce its impedance, and electric conductor is fixed in the insulating body, can increase its stability, in addition, the back by compression electric conductor of conductive rubber is led part and is positioned at electric rubber outer surface, also can reach equivalent path and shorten.

[description of drawings]

Fig. 1 is the structural representation of electronic component of the present invention.

Fig. 2 compresses the contacting structure schematic diagram for electronic component shown in Figure 1 mutually with chip module and circuit board.

Fig. 3 is the assembling schematic diagram of insulating body and conductive rubber in the electronic component shown in Figure 1.

Fig. 4 is the structural representation of electronic component second embodiment of the present invention.

Fig. 5 is the structural representation of electronic component the 3rd embodiment of the present invention.

Fig. 6 is the local enlarged diagram of electronic component shown in Figure 5.

Fig. 7 is the structural representation of electronic component the 4th embodiment of the present invention.

Fig. 8 is the structural representation of electronic component the 5th embodiment of the present invention.

[embodiment]

Below in conjunction with accompanying drawing to conductive rubber of the present invention and use the electronic component of this conductive rubber to make to further describe.

With reference to Fig. 1, Fig. 2 and Fig. 3, electronic component of the present invention are electric connector, and it comprises insulating body 2, plants the conductive rubber 1 in insulating body 2, be used to electrically connect chip module 3 and circuit board 4, wherein be respectively equipped with first pad 31 and second pad 41 on chip module 3 and the circuit board 4.

Conductive rubber 1, comprise the elastic matrix 11 and the wire 13 that are filled with conductive powder 12, wherein wire 13 is located in the elastic matrix 11, wire 13 is a strip, roughly is vertical placement, and roughly contour with conductive rubber 1, make like this under the situation of conductive rubber 1 given volume, electric current shortens by the equivalent path of conductive rubber, and it is big that equivalent cross-sectional area becomes, thereby reduce its impedance.

The contact jaw up and down 14,15 of conductive rubber 1 compresses mutually with second pad 41 of first pad 31 of chip module 3 and circuit board 4 respectively and contacts.

Insulating body 2 is provided with some accepting grooves 21, is used to accommodate conductive rubber 1, and the insulating body lower surface further is provided with reference column 22.

When electronic component electrically connected chip module 3 and circuit board 4, the reference column 22 of insulating body 2 stretched in the through hole 42 on the circuit board 4, was positioned at the conductive rubber 1 of insulating body 2 and second pad 41 on the circuit board 4 correspondence one by one; Chip module is placed insulating body 2 tops, make first pad 31 of chip module 3 corresponding with conductive rubber 1; Press down chip module 3, the last contact jaw 14 of its first pad 41 and conductive rubber 1 is compressed mutually contact, at this moment, second pad 41 of the following contact jaw 15 of conductive rubber 1 and circuit board 4 compresses mutually and contacts, and realizes the electric connection of existing sheet module 3 and circuit board 4.

Conductive rubber 1 is assembled together with insulating body 2 by the following method: (1) provides an insulating body 2, and wherein insulating body 2 is provided with some accepting grooves 21, and insulating body 2 lower ends are provided with reference column 22; (2) provide a stop part 7, insulating body 2 is positioned on the stop part 7, the corresponding accepting groove 21 in these stop part 7 tops is provided with pothole; (3) provide one to pour tool 5, it has a host cavity 51, and the bottom is provided with some channels 52, the upper and lower surface that runs through the bottom, be placed on the top of insulating body 2, make the accepting groove 21 of its channel 52 and insulating body 2 corresponding one by one mutually, and these channel 52 bottoms be provided with pothole; (4) conductive rubber liquid 6 (be liquid rubber, wherein be mixed with suitable conductive powder and wire) injection is poured in the tool 5, rolled-up stock 53 is placed conductive rubber liquid 6 tops; (5), make in its accepting groove that injects insulating body 2 to pressing down conductive rubber liquid 5; (6) solidify after, remove and pour tool 5 and stop part 3.

With reference to Fig. 4, be second embodiment of electronic component of the present invention.Be with the difference of first kind of embodiment: in the present embodiment, the wire of the strip in the conductive rubber 1 ' changes the sheet metal 13 ' (also can be the strip electric conductor of other shape) of strip into, also can reach the effect identical, not repeat them here with first embodiment.This conductive rubber adds man-hour, needs earlier sheet metal 13 ' to be fixed in the insulating body.

Fig. 5, Fig. 6 are the 3rd embodiment of electronic component of the present invention.This electronic component is a circuit board, it comprises plate body 8 and the conductive rubber 9 that is positioned on plate body 8 conductive spacers 81, conductive rubber 9 also comprises the wire 93 of elastic matrix 91, conductive powder 92 and strip, but can be used for directly compression contact of chip module 3, realize the electric connection of chip module 3 and circuit board.

Figure 7 shows that the 4th embodiment of electronic component of the present invention.Be with the difference of the 3rd embodiment: in the present embodiment, circuit board plate body 8 ' is provided with through hole 81 ', through hole 81 ' inwall is provided with metal conducting layer 82 ', conductive rubber 9 ' is positioned at through hole, contact with metal conducting layer 82 ', two contact jaws up and down of conductive rubber 9 ' all expose the upper and lower surface of plate body 8 '.

Figure 8 shows that the 5th embodiment of electronic component of the present invention, in the present embodiment, circuit board plate body 8 " upper surface be provided with blind hole 81 ", blind hole 81 " sidewall and bottom all establish conductive layer 82 ", conductive rubber 9 " be positioned at blind hole 81 ", with conductive layer 82 " contact the last contact jaw 94 of conductive rubber " expose plate body 8 " upper surface.

Claims

1. electric connector, comprise body and be positioned at some conductive rubbers on the body, it is characterized in that: described conductive rubber comprises the elastic matrix that is filled with conductive powder, further be provided with the electric conductor of strip in the elastic matrix, described electric conductor is vertically placed, and electric conductor and described conductive rubber are contour, and are fixed on the body.

2. electric connector as claimed in claim 1 is characterized in that: described electric conductor is wire or sheet metal.

3. electric connector as claimed in claim 1 is characterized in that: described body lower end is provided with reference column.

4. electric connector, comprise body and be positioned at some conductive rubbers on the body, it is characterized in that: described conductive rubber comprises the elastic matrix that is filled with conductive powder, further be provided with the electric conductor of strip in the elastic matrix, described electric conductor is vertically placed, and be fixed on the body, and the back by compression electric conductor of conductive rubber partly is positioned at the conductive rubber outer surface.

5 electric connectors as claimed in claim 4 is characterized in that: described electric conductor is wire or sheet metal.

6. electric connector as claimed in claim 4 is characterized in that: described body lower end is provided with reference column.