CN2660726Y - Electrical connector - Google Patents

Abstract

The utility model relates to an electric connector for supporting a chip module, which is used for electrically connecting the chip module and a circuit board. The electric connector mainly comprises an insulating body, and a plurality of conductive terminals which are arranged in the insulating body, wherein the insulating body is roughly in a square shape; the insulating body comprises a base part, and a plurality of side walls which surround at the base part. The base part is provided with a plurality of storing slots which are in array arrangement and are used for storing the terminals. The inner side of the side wall is provided with an arc-shaped rump part, both ends of which are connected with the side wall. A telescopic space is formed between the arc-shaped rump part and the side wall. A bevel-shaped sloping part which can guide the chip module is arranged on the rump part. The chip module can be completely positioned by the rump part, and the chip module is fixed in the side wall of the insulating body by elastic force and is electrically connected with the terminals. In addition, the side edge of the bottom of the insulating body, which is connected with the circuit board is provided with a positioning column used for positioning the electric connector on the circuit board.

Description

Electric connector

[technical field]

The utility model is about a kind of electric connector, particularly a kind of can be in order to electrically connect the electric connector of planar grid chip module and circuit board.

[background technology]

The planar grid electric connector is widely used in electronic applications, in order to chip module is electrically connected to circuit board.See also shown in Figure 1ly, this kind electric connector generally has insulating body 6, which is provided with plurality of terminals accepting groove 60 to accommodate plurality of conductive terminals 5.This insulating body 6 has four sidewalls 61 and by these four sidewalls, 61 formed receiving spaces 63 in order to accommodate chip module 7, and terminal containing slot 60 is provided with and through receiving space 63.One in four sidewalls 61 is provided with first elastic arm 611, and this first elastic arm 611 is a cantilever, and it can deform in first space 610 in being arranged at sidewall 61.Second elastic arm 612 be arranged at adjoining another sidewall 61 of first elastic arm 611 on, this second elastic arm 612 also is a cantilever, it can deform in second space 620 in being arranged at this sidewall 61.Be respectively equipped with the first inclined-plane 611A and the second inclined-plane 612A on first elastic arm 611 and second elastic arm 612 and be inserted in the receiving space 63 with guiding chip module 7, chip module 7 is installed in the receiving space 63 by the normal pressure that distortion produced of first, second elastic arm 611,612.When chip module 7 and electric connector are combined, chip module 7 can be pressed onto first, second inclined-plane 611A, the 612A of first, second elastic arm 611,612 earlier, force first, second elastic arm 611,612 that strain takes place in first space 610 and second space 620 respectively and to moving near sidewall 61 directions, thereby chip module 7 is put into the receiving space 63 of electric connector, the conductive spacer (not shown) of chip module 7 is contacted with conducting terminal 5 form to electrically conduct.The United States Patent (USP) that No. the 6th, 132,220, the United States Patent (USP) that on October 17th, 2000 was announced and on December 26th, 2000 are announced has all disclosed similar electric connector the 6th, 164, No. 978.

But, put into the receiving space 63 of electric connector at chip module 7 after, chip module 7 gives first all the time, the second inclined-plane 611A, the pressure of 612A, make elastic arm 611,612 are in deformation state all the time, like this, during long-time the use, because elastic arm 611,612 only a side link to each other with sidewall 61, make elastic arm 611,612 are in one-sided stress, can generation make elastic arm 611 because of undercapacity, 612 positions that link to each other with sidewall 61 produce fracture or the burr problem occurs, also may reduce because of fatigue of materials makes elastic force, above situation can be brought the function problem of chip module 7 delocalizations and chip module 7 and not conducting of circuit board, and this kind electric connector of planar grid array is mainly used on the precision instruments such as digitlization projecting apparatus, its performance can produce significant impact to the overall performance of machine, therefore needs very high reliability.Therefore, be necessary to design a kind of novel electric connector to overcome above-mentioned disappearance.

[utility model content]

The utility model is about a kind of electric connector that is used to accept chip module, it is used for being electrically conducted chip module and circuit board, this electric connector mainly comprises insulating body and is contained in the interior plurality of conductive terminals of insulating body, insulating body squarely substantially wherein, comprise a base portion and base portion some sidewalls on every side, this base portion is provided with the accepting groove of some array arrangements, in order to accommodate terminal, inside sidewalls is provided with the arcuate arm portions that two ends are connected with sidewall, and leave extendable room between this arcuate arm portions and sidewall, arm is provided with the inclined plane shape rake that can guide chip module, and this arm can be located chip module fully and chip module is immobilizated in the sidewall of insulating body to form with terminal by elastic force and is electrically conducted.In addition, the bottom surface lateral margin that insulating body and circuit board join is provided with reference column, in order to electric connector is positioned on the circuit board.

[description of drawings]

Fig. 1 is the three-dimensional exploded view of existing electric connector and chip module.

Fig. 2 is the three-dimensional exploded view of the utility model electric connector and chip module.

Fig. 3 is the three-dimensional combination figure of the utility model electric connector and chip module.

[embodiment]

Please in conjunction with consulting Fig. 2 and Fig. 3, the utility model is about a kind of electric connector 9 that is used to be electrically conducted chip module 2 and circuit board (not shown), and this electric connector 9 comprises insulating body 10 and is placed in plurality of conductive terminals 11 in the insulating body 10.

Insulating body 10 is a square platy structure, it comprises four sidewalls 12 around base portion 13 and the base portion 13, four sidewalls 12 and base portion 13 surround the accommodation space 15 of a ccontaining chip module 2, wherein, at least one sidewall 12 is provided with the arc rubber-like arm of giving prominence to accommodation space 15 18, in the present embodiment, respectively be provided with one on the adjacent two side 12 to the outstanding arc rubber-like arm 18 of accommodation space 15, leave extendable room 16 respectively between this arcuate arm portions 18 and sidewall 12, can shrink for arcuate arm portions 18 and use.Arm 18 ends are provided with two connecting portions 184 that are connected with sidewall 12, be that arm 18 is located to join for 12 liang with sidewall, and this two place connects the space certain distance, arcuate arm portions 18 is that the arc top is provided with the contact site 182 that can contact with chip module 2 in middle position, and this contact site 182 convexedly stretches in the accommodation space 15.Arm 18 is provided with one towards accommodation space 15 inclined downward shape rakes 181.Base portion 13 is provided with some accepting grooves that run through 110 of arranged, and it is used for accommodating conducting terminal 11.Insulating body 14 approximately is provided with two reference columns 14 along diagonal with the circuit board abutted surface, and it is used for inserting on the circuit board, so that electric connector 9 is positioned on the circuit board.

The chip module 2 that connects with conducting terminal 11 and the conducting strip of circuit board are the planar lattice array form, and these conducting terminals 11 are provided with the elastic contact part (not label) of all right one way or the other generation strain.

When chip module is installed, chip module 2 is tiltedly put into accommodation space 15 away from an angle lapping of two arcuate arm portions 18, depress chip module 2 another angles then, the elastic force that chip module 2 arm rest portions 18 strains produce is immobilizated in the accommodation space 15.Also can slip in the accommodation space 15, make arm 18 produce strains and chip module 2 is immobilizated in the accommodation space 15 with chip module 2 from top to bottom by the guiding of the rake 181 of arm 18.

By the join setting of structure of the arcuate arm portions 18 of electric connector 9 and sidewall 12 two ends, which kind of no matter install with installation method, all can make 18 two of arms stressed, stressed even, and be unlikely to result from the connecting portion 184 places fracture of arm 18 or the generation that produces problems such as burr, can realize the perfect elasticity location of chip module 2, guarantee the complete conducting of the conducting terminal 11 of chip module 2 and electric connector 9.And, because arcuate arm portions 18 intensity increase, make arm 18 be difficult for when long-time the use, reducing, and produce the problem of fixing shakiness because of fatigue of materials makes elastic force.

Claims (8)

1. electric connector, comprise the insulating body of cardinal principle squarely and be placed in the interior plurality of terminals of insulating body, insulating body comprises a base portion and centers on some sidewalls of this base portion, sidewall is enclosed to form a receiving space, base portion is provided with some accepting grooves of accommodating terminal, it is characterized in that: at least one inside sidewalls is provided with the arm that has at least two places to join with this sidewall, leaves extendable room between the sidewall at these arms and its place.

2. electric connector as claimed in claim 1 is characterized in that: respectively be provided with an arm that has two places to join with sidewall on the adjacent two side of insulating body.

3. electric connector as claimed in claim 1 is characterized in that: the arm of insulating body is provided with the rake of an inclined plane shape.

4. electric connector as claimed in claim 1 is characterized in that: the arm of insulating body is outwards outstanding arc, and this arc top is provided with contact site.

5. electric connector as claimed in claim 1 is characterized in that: the bottom surface of insulating body is provided with some reference columns.

6. electric connector as claimed in claim 1 is characterized in that: the extendable room between arm and the sidewall at arm with between two places of side arm are connected.

7. electric connector as claimed in claim 1 is characterized in that: arm is connected the space certain distance with two places of sidewall.

8. electric connector as claimed in claim 7 is characterized in that: arm is connected two ends that lay respectively at arm with two places of sidewall.

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