CN100470936C - electrical connector - Google Patents

Abstract

An electrical connector for electrically connecting a chip module and a circuit board, which includes an insulating body and a plurality of conductive terminals accommodated in the insulating body, the insulating body is provided with a plurality of terminal receiving grooves arranged in a matrix, and the conductive terminals are accommodated in In the groove, the conductive terminal is extended with elastic arms. There are two different regions in the terminal receiving groove. The conductive terminals in the two regions are arranged opposite to each other. The extending directions of the elastic arms of the conductive terminals in different regions are opposite, while the elastic arms of the terminals in the same region The extension direction is the same. After being pressed, since the two terminals are opposite to each other, the friction force on the chip module is also opposite to each other, resulting in a mutual balance effect. Therefore, the friction force of all conductive terminals on the chip module is reduced, thereby reducing the pressure on the chip. Movement of the module relative to the insulating body.

Description

Electric connector

[technical field]

The invention relates to a kind of electric connector, especially refer to a kind of in order to accept chip module and to be electrically connected to electric connector on the circuit board.

[background technology]

In order to electrically connect the electric connector of chip module and circuit board, it generally comprises insulating body and is contained in the interior plurality of conductive terminals of insulating body, and conducting terminal generally is provided with longer elastic arm, and be provided with the contact site that is electrically conducted with chip module in the end of elastic arm, these conducting terminals have elasticity preferably, need conducting terminal to be applied an external pressure by other assemblies, make after the conducting terminal generation strain to push with the conducting strip of chip module and contact by its elastic force, thereby reach firmly being electrically conducted of conducting terminal and chip module conducting strip, after this electric connector is connected to circuit board, conducting terminal is electrically conducted away from the other end and the circuit board of chip module, thereby realizes being electrically conducted of chip module and circuit board.

See also Fig. 5, a kind of existing electric connector 1 ', its insulating body 2 ' is provided with some terminal grooves 20 ' that are arranged in arrays, and plurality of conductive terminals 3 ' is contained in the corresponding terminal groove 20 ', and all terminal 3 ' rows are in the same direction.But there is defective in this terminal arrangement mode: promptly behind electric connector 1 ' pressurized, conducting terminal 3 ' pressurized strain, the displacement of a horizontal direction will be produced, and chip module produced an equidirectional frictional force, because electric connector 1 ' has a large amount of conducting terminals 3 ' and is arrangement in the same way, the frictional force direction that chip module is produced is identical, total frictional force will be very big, chip module can be because of the drive of frictional force, in the fastening process, produce mobile phenomenon along the frictional force direction, thereby cause the relative sliding deformation of insulating body with chip module, and and then cause the conducting strip of conducting terminal and chip module to be difficult to accurately firmly connect, influence the performance that is electrically conducted of electric connector.

Therefore, be necessary to design a kind of new electric connector, to overcome above-mentioned defective.

[summary of the invention]

The object of the present invention is to provide a kind of electric connector, in order to electrically connect chip module and circuit board, this electric connector can reduce the horizontal frictional force of conducting terminal to chip module, moves thereby alleviate the chip module level.

For achieving the above object, electric connector of the present invention is in order to electrically connect chip module and circuit board, it comprises insulating body and is contained in the interior plurality of conductive terminals of insulating body, insulating body is provided with the terminal containing slot of some one-tenth arranged, conducting terminal is contained in the terminal containing slot, conducting terminal extends the contact site that is provided with elastic arm and is positioned at the elastic arm end, wherein, the terminal containing slot of described some one-tenth arranged is divided at least two zones, the conducting terminal in this at least two zone is to arrange relatively, the bearing of trend of elastic arm is opposite, and the bearing of trend of the elastic arm of the same area conducting terminal is identical.

Compared with prior art, the present invention has following advantage: arrange in opposite directions by conducting terminal, behind the pressurized of falling the electric terminal, the conducting terminal that the elastic arm bearing of trend is opposite, the horizontal frictional force direction that chip module is produced is also opposite, produces the effect of mutual balance, so all conducting terminals are reduced the horizontal frictional force of chip module, or finally can reach balance, move horizontally thereby can alleviate the chip module that causes because of the horizontal frictional force of conducting terminal.

[description of drawings]

Fig. 1 is conducting terminal and the stereogram of terminal accommodating in insulating body of electric connector one embodiment of the present invention.

Fig. 2 is that the conducting terminal of electric connector shown in Figure 1 is contained in the vertical view in the insulating body.

Fig. 3 is that connector terminals shown in Figure 1 is contained in the insulating body, and between chip module and circuit board, and the partial sectional view of chip module when not depressing.

Fig. 4 is that connector terminals shown in Figure 1 is contained in the insulating body, and between chip module and circuit board, and the partial sectional view of chip module when depressing.

Fig. 5 is the conducting terminal and the vertical view of terminal accommodating in insulating body of existing electric connector.

[embodiment]

See also Fig. 1 to Fig. 4, the invention discloses a kind of electric connector 1, in order to accept chip module 4 and to be electrically connected to circuit board 5.This electric connector 1 comprises insulating body 2 and is contained in intrinsic plurality of conductive terminals 3.

Insulating body 2 roughly becomes the rectangular plate shape structure, this insulating body 2 is provided with the terminal containing slot 20 of some one-tenth arranged, in order to the conducting terminal 3 of accommodating respective number, wherein, the diagonal L1 that described plurality of terminals accepting groove 20 is shown insulating body 2 greatly is that separator bar is divided into two zones of different A, B, and the terminal containing slot 20 in this two zone serves as that symmetry is positioned opposite to each other with diagonal L 1, and the inwall of each terminal containing slot 20 is concaved with holding slot 200, in order to fixing conducting terminal 3.

The elastic arm 32 that conducting terminal 3 comprises fixing base portion 30, bending is extended on base portion 30 1 side direction and extend the weld part 34 that bending forms from the bottom of base portion 30 downwards; Holding slot 200 interference engagement of base portion 30 and terminal containing slot 20, thereby with conducting terminal 3 stable being immobilizated in the corresponding terminal containing slot 20; 3 in the terminal convex contact site 34 that is provided with of elastic arm 32, to be electrically conducted with chip module 3; Weld part 34 is soldered on the circuit board 4 by a tin ball (not indicating), thereby is electrically conducted with circuit board 4.

When conducting terminal 3 assemblings are contained in the terminal containing slot 20 of insulating body 2, the relative arrangement that is arranged as face-to-face direction of two regional conducting terminals, the bearing of trend of elastic arm 32 of conducting terminal 3 that is contained in the same area A (or B) terminal containing slot 20 is identical, and the in opposite directions extension of elastic arm 32 for facing each other of the elastic arm 32 of the conducting terminal 3 of a-quadrant and B zone conducting terminal 3, in the present embodiment, the bearing of trend of all conducting terminal 3 elastic arms 32 is parallel to each other and be approximately perpendicular to the diagonal L 1 of insulating body 2.

See also Fig. 3 and Fig. 4, conducting terminal 3 is immobilizated in the insulating body 20, and insulating body 20 is connected to circuit board 5 and between chip module 4 and circuit board 5.Wherein chip module 4 is provided with and is the plurality of conducting strips 40 that standard array is arranged, these conducting strips 40 can push first contact site 36 that promotes conducting terminal 3 and be electrically conducted with it under the effect of external force, also be provided with the plurality of conducting strips 50 that can be electrically conducted with the weld part 34 of conducting terminal 3 by described tin ball on the circuit board 5.When chip module 4 is not depressed (Fig. 3 reference), elastic arm 32 parts of conducting terminal 3 stretch out insulating body 2, and weld part 34 obtains electric sheet 50 by tin ball and circuit board 5 and contacts, and the conducting strip 40 of chip module 4 does not connect with contact site 34 extruding.When pressing chip module 4 that its conducting strip 40 is electrically conducted with conducting terminal 3 (Fig. 4 reference), conducting strip 40 will push the contact site 34 of conducting terminal 3 downwards, strain takes place because of pressurized in conducting terminal 3, make contact site 34 produce a horizontal displacement perpendicular to conducting terminal 3 pressurized directions, and contact site 34 will produce an equidirectional horizontal frictional force on the conducting strip 40 of chip module 4 in the process of occurred level displacement, because 1 liang of regional terminal of this electric connector is arranged as face-to-face and arranges in opposite directions, two regional conducting terminal elastic arms extend toward each other, behind the pressurized, 3 pairs of chip modules of conducting terminal facing each other, 4 horizontal frictional force F1, F2 also toward each other, the effect that generation is cancelled out each other, arrange in the same way with all conducting terminals in the known techniques and to compare, the horizontal frictional force of 3 pairs of chip modules 4 of all conducting terminals has reduced, even finally can reach balance, thereby can alleviate chip module 4 the moving horizontally of causing because of frictional force with respect to insulating body 2.

It is to be noted, the conducting terminal 3 of electric connector 1 of the present invention also not only is confined to above-described concrete structure, it is adaptive and realize the structure that is electrically conducted with chip module by the mode of pushing also to can be other various and electric connector, two regional conducting terminals are arranged in opposite directions and also are not limited to that the diagonal with insulating body is a symmetry in the foregoing description, also can other arrangement mode toward each other, as being separator bar with the arbitrary center line that is parallel to the insulating body side, in addition, described plurality of terminals accepting groove also is not limited to only be divided into two zones, can also be divided into more zone, as being divided into four zones, in a word, as long as conducting terminal is arranged as the subregion and arranges relatively, the conducting terminal elastic arm extends in twos in opposite directions, all can solve technical problem of the present invention.

In addition, be the development length that increases the conducting terminal elastic arm, the longitudinally of terminal containing slot can be arranged to the insulating body side in angle of 45 degrees.

Claims (4)

1. An electrical connector for electrically connecting a chip module and a circuit board, which includes an insulating body and a plurality of conductive terminals accommodated in the insulating body, the insulating body is provided with a plurality of terminal receiving grooves arranged in a matrix, and the conductive terminals are accommodated In the terminal receiving groove, the conductive terminal is provided with a base that interferes with the terminal receiving groove, an elastic arm extending from the base, and a contact portion located at the end of the elastic arm. The extending direction of the elastic arm of the conductive terminal in one area is opposite and the extending direction of the elastic arm of the conductive terminal in the same area faces the other area, and the two areas of the terminal receiving groove of the insulating body are separated by a diagonal line of the insulating body. 2. The electrical connector according to claim 1, wherein the extending direction of the elastic arm of the conductive terminal is perpendicular to the diagonal line of the insulating body. 3. The electrical connector according to any one of claims 1 to 2, wherein a solder ball is attached to the end of the conductive terminal away from the elastic arm and electrically welded to the circuit board. 4. The electrical connector as claimed in claim 3, wherein the longitudinal direction of the terminal receiving groove forms an angle of 45 degrees with the side of the insulating body.

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