CN2674713Y - Electric connector - Google Patents

Abstract

The utility model relates to an electric connector which is used for electrical guide connection chip modules and circuit boards, comprising an isolative body which is general in square and a conductive terminal arranged in the isolative body. The isolative body comprises a base and a side wall which surrounds the base. The side wall and the base are jointly enclosed into a holding space and the chip module is taken in by the holding space. The base is provided with a terminal absorbing slot to take in the terminal. An elastic arm is equipped on the inner side of the side wall. The expansion and contraction space is formed between the elastic arm and the side wall of the elastic arm. The angular separation between the direction of the compressional force of at least one elastic arm to the chip module and the horizontal distortion direction of the conductive terminal of the electric connector is smaller than 90 degrees.

Description

Electric connector

[technical field]

The utility model is about a kind of electric connector, is meant a kind of electric connector that can be used to electrically connect planar grid chip module and circuit board especially.

[background technology]

Electric connector of planar grid array is widely used in electronic applications, is used for chip module 7 is electrically connected to circuit board.See also Fig. 1 to Fig. 3, this kind electric connector is provided with insulating body 6, which is provided with terminal terminal containing slot 60 to accommodate conducting terminal 5, conducting terminal 5 is formed with the bending of one " C " shape, and the opening of the bending of all conducting terminals 5 is all towards identical, and the end of conducting terminal 5 is provided with abutting part 50 to connect mutually with the corresponding electric conductor (not shown) of chip module 7.This insulating body 6 has matrix 65 and four sidewalls 61, and matrix 65 and four sidewalls 61 surround a receiving space 63 that is used to accommodate chip module 7 jointly, and terminal containing slot 60 is through matrix 65.In the opening institute of conducting terminal 5 bending towards a sidewall 61 be provided with first elastic arm 611, this first elastic arm 611 is the cantilever setting, its can first space 610 in being formed at sidewall 61 in the generation strain.Second elastic arm 612 be arranged at adjoining another sidewall 61 of first elastic arm 611 on, this second elastic arm 612 also is the cantilever setting, strain can take place in second space 613 in being formed at this sidewall 61 in it.Be respectively equipped with the first arc abutting part 611A and the second arc abutting part 612A on first elastic arm 611 and second elastic arm 612.When from top to down chip module 7 being assembled in electric connector, the side of chip module 7 will push first, second elastic arm 612,612 first, the second arc abutting part 611A, 612A, thereby force first, second elastic arm 611,612 respectively strain take place in first space 610 and second space 613 and to moving near sidewall 61 directions, thereby chip module 7 is put into the receiving space 63 of electric connector, and the electric conductor (not shown) that makes chip module 7 contacts with conducting terminal 5 to form and electrically conducts, because first, second elastic arm 611,612 deform generation one elastic restoring force, thereby this elastic restoring force will be pushed the sidewall of chip module 7 chip module 7 reliably is immobilizated in the receiving space 63 of electric connector.

Yet, first elastic arm 611 be arranged at conducting terminal 5 bending opening towards a sidewall 61 on, when in the receiving space 63 that chip module 7 is installed on electric connector from top to bottom, the electric conductor of chip module 7 (not shown) is to the abutting part 50 that presses down conducting terminal 5, make abutting part 50 produce a displacement S ' under oblique, this displacement S ' can be decomposed into one towards the horizontal displacement S1 ' of first elastic arm 611 and the displacement S2 ' of a vertical direction, and abutting part 50 will produce an equidirectional horizontal frictional force F ' in generation on abutting part 50 in the process of the horizontal displacement S1 ' of first elastic arm 611, have a large amount of conducting terminals 5 because of electric connector again, it is one equidirectional that each conducting terminal all will produce on the electric conductor of the chip module 7 that is in contact with it, promptly towards the frictional force F ' of first elastic arm 611, the chip module 7 that will finally promote with joint efforts of all these frictional force F ' pushes first elastic arm 611, thereby cause chip module 7 accurately to locate, when serious even break first elastic arm 611, thereby influence the electric connection performance of electric connector.And and this kind electric connector of planar grid array is mainly used on the digitlization projecting apparatus, and stable, the reliability of the electric connection of electric connector all had higher requirements.Therefore, be necessary to design a kind of novel electric connector to overcome above-mentioned disappearance.

[summary of the invention]

The utility model provides a kind of electric connector, and it can be used to electrically connect the electric connector of planar grid chip module and circuit board.

The purpose of this utility model is achieved in that a kind of electric connector, it is in order to be electrically conducted chip module and circuit board, comprise the insulating body of cardinal principle squarely and be placed in the interior conducting terminal of insulating body, insulating body comprises a base portion and centers on the sidewall of this base portion, sidewall surrounds a receiving space jointly, chip module is contained in wherein, base portion is provided with terminal containing slot to accommodate terminal, inside sidewalls is provided with elastic arm, leave extendable room between the sidewall at this elastic arm and its place, and at least one elastic arm to the angle between the horizontal distortion direction of the conducting terminal of the direction of the extruding force of chip module and electric connector less than 90 degree.

Compared with prior art, the utlity model has following advantage: since an elastic arm be arranged at conducting terminal bending opening on the sidewall dorsad, during conducting terminal pressurized strain, the frictional force direction that produces on the electric conductor of chip module is opposite with the suffered extruding force direction of an elastic arm, can not cause this elastic arm to be damaged by pressure because of being subjected to excessive compression, and point to the suffered frictional force of all electric conductors with joint efforts this elastic arm right sidewall, so the action effect of making a concerted effort will make chip module push against more first elastic arm right sidewall, thereby chip module more firmly is combined in the accommodation space of electric connector.

[brief description of drawingsfig]

Fig. 1 is existing electric connector and the preceding stereogram of chip module combination.

Fig. 2 is for having the stereogram after electric connector and chip module make up now.

Fig. 3 is for having the cutaway view of electric connector and chip module combination back along the III-III direction now.

Fig. 4 is the stereogram before electric connector of the present utility model and the chip module combination.

Fig. 5 is the stereogram after electric connector of the present utility model and the chip module combination.

Fig. 6 is that electric connector of the present utility model and chip module make up the cutaway view of back along the VI-VI direction.

Fig. 7 is the electric connector of the utility model second embodiment and the stereogram before the chip module combination.

[execution mode]

Please in conjunction with consulting Fig. 4 to Fig. 6, the utility model is the electric connector 9 that is used to be electrically conducted chip module 3 and circuit board (not label) about a kind of, and this electric connector 9 comprises insulating body 10 and is placed in conducting terminal 20 in the insulating body 10.

Conducting terminal 20 roughly is the bending of one " C " shape, and the opening of all conducting terminal 20 bendings is all towards identical, one end of conducting terminal 20 is provided with junction 200 to match with the corresponding electric conductor of chip module 3, and another end of conducting terminal 20 is provided with elastic contact part (not shown) to connect mutually with circuit board (showing label).

Insulating body 10 is a square platy structure, it comprises four sidewalls 12 around base portion 13 and the base portion 13, base portion 13 is provided with the terminal containing slot 110 of arranged, and it is used for accommodating the accommodation space 15 that 20, four sidewalls 12 of conducting terminal and base portion 13 surround a ccontaining chip module 3 jointly.The sidewall 12 that opening deviated from conducting terminal 20 bendings is provided with first elastic arm 120, and this first elastic arm 120 is the cantilever setting, and it can deform in first space 121 in being formed at sidewall 12.Second elastic arm 122 be arranged at adjoining another sidewall 12 of first elastic arm 120 on, this second elastic arm 122 also is the cantilever setting, it can deform in second space 123 in being formed at this sidewall 12.Be respectively equipped with the first arc abutting part 120A and the second arc abutting part 122A on first elastic arm 120 and second elastic arm 122.

When from top to down chip module 3 being assembled in electric connector 9, the side of chip module 3 will push first, second elastic arm 120,122 first, the second arc abutting part 120A, 122A, and force first, second elastic arm 120,122 respectively strain take place in first space 121 and second space 123 and to moving near sidewall 12 directions, thereby chip module 3 is put into the receiving space 15 of electric connector, the electric conductor (not shown) of chip module 3 is contacted with conducting terminal 20 form and electrically conduct, because first, second elastic arm 121,122 deform generation one elastic restoring force, thereby this elastic restoring force will be pushed the sidewall of chip module 3 chip module 3 reliably is immobilizated in the accommodation space 15 of electric connector.

And since first elastic arm 120 be arranged at conducting terminal 20 bending opening on the sidewall 12 dorsad, when in the accommodation space 15 that chip module 3 is installed on electric connector 9 from top to bottom, the electric conductor of chip module 3 (not shown) will be to the junction 200 that presses down conducting terminal 20, and make junction 200 produce a displacement S under oblique, this displacement S can be decomposed into the horizontal displacement S1 and a vertical displacement S2 of first elastic arm 120 dorsad, and junction 200 will produce an equidirectional horizontal frictional force F (for avoiding coinciding with horizontal displacement S1 on junction 200 in the process of the horizontal displacement S1 of first elastic arm 120 dorsad takes place, should horizontal frictional force F move on vertically), have a large amount of conducting terminals 20 because of electric connector 9 again, it is one equidirectional that each conducting terminal 20 all will produce on the electric conductor of the chip module 3 that is in contact with it, the i.e. frictional force F of first elastic arm 120 dorsad, the resultant direction of all these frictional force F is opposite with the extruding force direction of the side of the suffered chip module 3 of first elastic arm 120, can not cause first elastic arm 120 to be damaged by pressure because of being subjected to excessive compression, and therefore make a concerted effort to point to first elastic arm 120 right sidewall 12, so make a concerted effort the action effect of F0 will make chip module 3 push against more first elastic arm 120 right sidewall 12, thereby chip module 3 more firmly is combined in the accommodation space 15 of electric connector 9.

Fig. 7 has disclosed second execution mode of the present utility model, respectively is provided with one on the adjacent two side 12 to the outstanding arc elastic arm 18 of accommodation space 15, and the two ends of this elastic arm 18 link to each other with an inboard ancient piece of jade, round, flat and with a hole in its centre 12.Wherein an elastic arm 18 to the opening of the projected direction of accommodation space 15 and conducting terminal 20 bendings towards identical, leave extendable room 183 respectively between two arc elastic arms 18 and the sidewall 12, can inwardly shrink for arc elastic arm 18, arc elastic arm 18 is that the arc top is provided with the abutting part 182 that can connect with chip module 3 in middle position, and this abutting part 182 convexedly stretches in the accommodation space 15.When from top to down chip module 3 being assembled in electric connector 9, the side of chip module 3 will push the abutting part 182 of two arc elastic arms 18, and make two arc elastic arms 18 strain in extendable room 183, thereby chip module 3 is put into the receiving space 15 of electric connector 9, the electric conductor (not shown) of chip module 3 is contacted with conducting terminal 2 form and electrically conduct, because of elastic arm 18 deforms generation one elastic restoring force, thereby this elastic restoring force will be pushed the sidewall of chip module 3 chip module 3 reliably will be immobilizated in the accommodation space 15 of electric connector 9.Since an elastic arm 18 be arranged at conducting terminal 20 bending opening on the sidewall 12 dorsad, during conducting terminal 20 pressurized strains, the frictional force direction that conducting terminal 20 produces on the electric conductor of chip module 3 is opposite with the extruding force direction of the side of chip module 3, can not cause this elastic arm 120 to be damaged by pressure because of being subjected to excessive compression, and point to the frictional force that on chip module 3, produces because of all conducting terminals 20 with joint efforts conducting terminal 20 the bending opening towards a sidewall 12, so the action effect of making a concerted effort will make chip module 3 push against more conducting terminal 20 the bending opening towards sidewall 12, thereby chip module 3 more firmly is combined in the accommodation space 15 of electric connector.

It is to be noted the opening of conducting terminal 20 towards can not paralleling with the sidewall 12 of electric connector 9 or vertical, can also and 12 of sidewalls constitute an angle, as 45 degree.At this moment, as long as electric connector 9 is provided with an elastic arm, this elastic arm to the extruding force direction of chip module 3 and be " C " shape conducting terminal 20 opening towards the angle between the direction less than 90 degree, that is this elastic arm to the angle between the horizontal distortion direction of the extruding force direction of chip module 3 and conducting terminal 20 less than 90 degree, just can reach creation purpose of the present utility model.

Claims (10)

1. electric connector, it is used for being electrically conducted chip module and circuit board, comprise insulating body and be placed in the interior conducting terminal of insulating body, wherein insulating body comprises that a base portion reaches the sidewall around this base portion, base portion is provided with terminal containing slot to accommodate terminal, matrix and sidewall surround a receiving space of accommodating the chip module jointly, inside sidewalls is provided with elastic arm, it is characterized in that: at least one elastic arm to the angle between the horizontal distortion direction of the conducting terminal of the direction of the extruding force of chip module and electric connector less than 90 degree.

2. electric connector as claimed in claim 1 is characterized in that: electric connector is respectively equipped with first elastic arm and second elastic arm on the adjacent two side.

3. electric connector as claimed in claim 2 is characterized in that: first elastic arm is consistent with the horizontal distortion direction of the conducting terminal of electric connector to the direction of the extruding force of chip module.

4. electric connector as claimed in claim 2 is characterized in that: first elastic arm to the angle between the horizontal distortion direction of the conducting terminal of the direction of the extruding force of chip module and electric connector less than 90 degree.

5. as claim 3 or 4 described electric connectors, it is characterized in that: conducting terminal is " C " shape structure, and the opening of all conducting terminals is towards unanimity.

6. electric connector as claimed in claim 5, it is characterized in that: conducting terminal has two elastic portion, and this conducting terminal and chip module and circuit board are Elastic Contact.

7. electric connector as claimed in claim 1 is characterized in that: elastic arm is a cantilever design, and its end is formed with the arc abutting part.

8. electric connector as claimed in claim 1 is characterized in that: the two ends of elastic arm link to each other with the inboard of sidewall, and the middle part of elastic arm is outstanding to insulating body central authorities.

9. electric connector as claimed in claim 1 is characterized in that: the arc top of elastic arm is provided with the abutting part that connects with chip module.

10. as claim 7 or 8 described electric connectors, it is characterized in that: leave extendable room between the sidewall that elastic arm and its connected.

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