CN2377704Y - Electric connector - Google Patents

Abstract

The utility model relates to an electric connector, which is used for electrically connecting a chip module and a circuit board. The utility model comprises a base and a cover body arranged on the base, wherein, the periphery of the base is provided with flanges having clamping blocks; a plurality of through slots used for containing conductive terminal planted with soldering materials are arranged on the base; the cover body is provided with a plurality of opening holes which are relative to the through slots of the base and are used for passing through end feet of a chip module; a convex part which can be buckled with the clamping blocks is arranged at an appropriate position on the periphery of the opening holes corresponding to the flanges; when the electric connector is heated and welded, the convex part can be butted on the circuit board for effectively control the connecting height of the electric connector welded.

Description

Electric connector

The utility model relates to a kind of electric connector, refers in particular to a kind of furring device that has, and can stablize the control welding and assembling height and the electric connector of the tin that effectively prevents to overflow in welding process.

The existing electric connector that is used to connect chip module uses needle-like array package (Pin GridArray usually, PGA) connected mode connects chip module and electric connector, and the electric connector past of using this connected mode generally on being welded in circuit board the time is used the welding of perforation (Through Hole) formula, because piercing welding must wear earlier corresponding hole usually on circuit board, under highdensity terminal deploying, the practice that wears hole obviously is highly difficult and difficult enforcement, and such winding mode can take the circuit board part of both sides up and down simultaneously, and limited board area is not obviously met economic benefit.In addition, the design of so perforation formula certainly will make terminal have equivalent length, the height of electric connector will be difficult for reducing thus,, present industry uses spherical array package (Ball Grid Array so having, the trend of connected mode BGA), this connected mode is implemented for a long time in the integrated circuit industry, when utilizing on electric connector is to plant the scolding tin material in advance on the conducting terminal of electric connector, and suitably heating makes scolding tin material local melting and conducting terminal is electrically engaged with circuit board then.This The Application of Technology obviously can solve the problems of piercing welding at one stroke, and relevant integrated circuit technique sees also cases such as No. the 86105336th, 86100612, TaiWan, China patent application.Be the enforcement schematic diagram of using spherical array package mode electric connector as shown in Figures 1 and 2, wherein electric connector 2 is provided with lid 20 and base 21, on lid 20, can accept chip module (not shown), and base 21 is implanted with scolding tin material 210 respectively in advance on the terminal ends that relies on circuit board 3 sides (not shown).Lid 20 is can the covering group solid on base 21, and divides into groups into connecting with the terminal with electric connector 2 for the conductive part of chip module (not shown), then by scolding tin material 210 to electrically connect chip module (not shown) and circuit board 3.Because the side that existing electric connector 2 relies on circuit board 3 does not have the bed hedgehopping design usually, so the weight of whole electric connector and chip module combination will directly and fully be pressed on the scolding tin material 210 when it welded at application scolding tin material 210, yet scolding tin material 210 has the phenomenon of partial melting distortion in the process of heating and welding, so can't obtain good control (shown in Figure 2) to the whole height after the welding, even cause electric connector 2 that inclination (with reference to Fig. 2) phenomenon of unbalance stress takes place when welding easily thus, and and then cause the solder overflow of the influential contact usefulness of terminal of inclination root edge to take place.In sum, a kind of electric connector that can overcome the above problems of design just becomes the task of top priority that desire is used spherical array package mode electric connector.

The purpose of this utility model is to provide a kind of electric connector, and wherein this electric connector relies on the side that electrically is bonded on circuit board and has the bed hedgehopping structural design, can support in electric connector adds the process of thermal weld thus in good time and end on circuit board.

The purpose of this utility model is achieved in that this electric connector includes: base and the lid that is arranged on the base.Wherein base is a plane configuration, and it is provided with flange in peripheral appropriate position, and is provided with fixture block on this flange.In addition, the base central position is provided with several grooves containing the conducting terminal of respective number, and is preset with the scolding tin material at these conducting terminal ends, and this scolding tin material has certain height to electric connector.Be provided with the corresponding perforate of groove of several and base as for lid, end pin for chip module passes through, and be provided with at its periphery that be held on the flange fixture block with button with the corresponding protuberance of base flange and limit lid can only be along a direction and slide with respect to base, and in each protuberance of this lid, be equipped with from its side wall surface to the logical groove that reveals of lid upper surface.According to aforesaid creation characteristic, the protuberance of lid has a bed hedgehopping effect.Promptly when lid and base fastening, the protrusion terminal surface of protuberance is higher than the basal surface of seating plane to circuit board, and the protuberance of lid will be when scolding tin material melted by heat also have the height change of nature distortion because of the weight of bearing elements such as electric connector, suitably support and end on circuit board, remain on the certain position with the height after effective control welding.

Compare prior art, the utility model can prevent the spherical scolder excessive deformation of utilization that electric connector welds, and then the whole height of effective control welding back electric connector, the electrical bonding part of electric connector can be adjusted on suitable height and the appropriate location thus, so as to preventing from or the situation of excessive tin, and and then guarantee the quality that electrically engages.

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 be for existing electric connector winding on circuit board and accept the end view of chip module.

Fig. 2 is adding the end view that thermal weld front and back run-off the straight phenomenon is illustrated for existing electric connector.

Fig. 3 is the stereogram of the utility model exploded.

Fig. 4 is the stereogram of looking at the bottom of the utility model lid.

Fig. 5 is the stereogram of bottom view of the utility model and chip module and the signal of circuit board assembling relation.

Fig. 6 is the end view that the utility model heating forward part is analysed and observe.

Fig. 7 is the end view that analyse and observe the utility model heating rear section.

Please consult Fig. 3 earlier, Fig. 4 and shown in Figure 5, the utility model is used to electrically connect circuit board 4 and chip module 5, it is provided with a base 6 that slightly is plane configuration, central position is provided with the conducting terminal 62 of several grooves that connect its end face and bottom surface 61 to accommodate respective number on this base 6, be provided with the flange 60 of protrusion triangular in shape in the edge of base 6, and on a side of these flanges 60, convex with fixture block 600, conducting terminal 62 is preset with spherical scolding tin material 620 (with reference to Fig. 6 and Fig. 7) on the end of circuit board 4, and these scolding tin material 620 can prop up electric connector on certain altitude before welding.

Continuous see also Fig. 4 and shown in Figure 5, on base 6, can further cover and be covered with a lid 7, and on this lid 7, can be provided with several and the 61 corresponding perforates 70 of base 6 grooves, pass through for the end pin 50 of chip module 5.Lid 7 falls that diagonal that the place is linked to be is made as that lid 7 slides with respect to pedestal 6 and slip shaft X that electric connector is changed at two relative angles between clamped condition and release condition, and be formed with triangle index 72 on the end face near the corner of this slip shaft X one end, in order to indication lid 7 with respect to the direction of pedestal 6 when clamped condition moves.Lid 7 is provided with and base 6 flanges 60 corresponding protuberances 71 to the extension of base 6 directions in its edge again, can only move along base with a diagonal with the restriction lid.In each protuberance 71, be equipped with in addition from the logical groove 710 that reveals to the lid upper surface of its side wall surface, and the fixture block 600 of base can be accommodated within it and move towards slip along it.When lid 7 fastened with base 6, the protrusion terminal surface of protuberance 71 was higher than the basal surface of base 6 towards circuit board.

See also Fig. 3 again, when electric connector makes up, earlier conducting terminal 6 is mounted in the groove 61 of base 6 correspondences, then lid 7 is arranged on the end face of base 6, at this moment, the fixture block 600 on the base flange 60 slidably is buckled in to property in protuberance 71 grooves 710 of lid 7.And when 5 groups of chip modules are gone in this electric connector of finishing combination, the end pin 50 of chip module 5 will pass the perforate 70 of lid 7 and insert in the groove 61 of base 6, and lid 7 is made linear slide with respect to base 6 along the slip shaft directions X, and drive chip module 5 end pin 50 and slide and contact with the conducting terminal with base 6, reach the purpose of electrical communication whereby in the zero insertion force mode.

See also Fig. 6 and Fig. 7 again, after lid 7 and base 6 fasten, its integral body will encapsulate (BGA) mode processed by ball grid array, owing to be implanted with spherical scolding tin material 620 in advance on the conducting terminal 62, when heating scolding tin material 620 will local melting and be stained with circuit board 4 and be connected together, and conducting terminal 62 is welded on effect on the circuit board 4 reaching after the cooling, at this moment, when the protuberance 71 of lid 7 will have the height change of nature distortion in scolding tin material 620 melted by heat and because of the weight of bearing elements such as electric connector, suitably support and end on circuit board 4, remain on the location with the height after effective control welding, like this, can accurately control electric connector whole height after the welding.And in the prior art, when adding thermal weld, because the inconsistent inclination that easily causes base 6 of the scolding tin material 620 of electric connector fusing, and and then cause taking place solder overflow.And in the utility model because the height of base 6 is subjected to the restriction of protuberance 71, thus can effectively prevent to weld the time because the fusing degree varies causes electric connector tilt phenomenon and the generation of the bad welding consequences such as excessive tin of initiation therefrom that is caused.

Claims (4)

1. electric connector, be used to electrically connect chip module and circuit board, it includes insulating body, described insulating body has the side surface of accepting chip module, on described side surface, be provided with the groove that several connect insulating body, contain conducting terminal in the groove of described insulating body correspondence, this terminal one end extends to insulating body and accepts the side surface of chip module and electrically conduct with chip module, its other end then protrudes out outside insulating body, and winding has tool that the fusibility joint element of height necessarily is set respectively; It is characterized in that: insulating body is not provided with a protuberance at least it is provided with the appropriate location of groove relatively away from the opposite side surface of chip module on, and this protuberance protrudes from the be provided with height of the height of insulating body side surface less than joint element, and can suitably be connected on the circuit board when the joint element temperature distortion.

2. electric connector according to claim 1 is characterized in that: described insulating body includes base and bearing winding on base and can be with respect to base towards the specific direction lid of slippage back and forth.

3. electric connector according to claim 2 is characterized in that: described insulating body protuberance is located on the lid periphery appropriate location, and which is provided with from the protuberance side logical reveal to lid away from the groove on the side surface of base.

4. electric connector according to claim 3 is characterized in that: described base edge is provided with several flanges corresponding to the position of protuberance is other, and the side of this flange is provided with fixture block, is held on the lid groove with the sliding button.

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