CN2674686Y - Electric connector - Google Patents

Abstract

The utility model provides an electric connector which electrically connects an integrated circuit package to a circuit board. The electric connector comprises an isolation body provided with a plurality of terminal holes and a plurality of conductive terminals contained in the terminal holes; the lower end of the terminal can be welded on the circuit board, and the terminal is provided with holding parts matching with the terminal holes; the terminal hole is provided with a containing hole whose upper width is lager and a holding hole whose lower width is smaller; the opposite two sides of the holding part of the terminal corresponding to the width direction of the terminal holes are provided with flat matching edges, and the two matching edges match with the terminal holes in an interference mode; after the electric connector is welded on the circuit board and when the isolation body generates a certain buckle or shock, the terminals can move up and down corresponding to the isolation body under the action of welded connection with the circuit board, because the matching edges of the terminals are flat; in this way, the utility model can retard the stress action born by the welded connection position, reduce the damage of the welding connection caused by overstress, and improve the stability of the electrical connecting of the electric connector consequently.

Description

Electric connector

[technical field]

The utility model relates to a kind of electric connector, refers to a kind of electric connector of accepting the integrated circuit encapsulation in the mode of pushing especially.

[background technology]

With the develop rapidly of computer integrate circuit encapsulation (referring to the CPU module especially) speed of service, its packing forms is in continuous variation, and the also constantly development of the structure of the electric connector of bearing integrated encapsulation.The encapsulation encapsulation of stitch grid array (PGA) integrated circuit is now generally used, and the electric connector that is used to carry this integrated circuit encapsulation also is welded in printed circuit board (PCB) in a large number, and this technology can be with reference to United States Patent (USP) the 5th, 456, No. 613.But, the traditional electrical connector needs the mat plain conductor terminal supportor to be drawn the circuit that is connected to interior of IC package, not only this lead-in wire program raises the cost and increases the assembling volume (usually, plain conductor draws the encapsulation volume of receiving terminal supportor, approximates four times that former integrated circuit package body amasss), in addition, because of terminal supportor lengthening circuit paths, resistance is increased,, the phenomenon of signal entanglement very easily occurs if in higher transmission environment.Thereby another kind of integrated circuit encapsulation packing forms-ball-shaped grid array (BGA) encapsulation makes volume only be 1/3rd of PGA integrated circuit encapsulation encapsulation because of it shortens signaling path by the tin ball, and the trend that replaces PGA arranged, correlation technique please refer to United States Patent (USP) the 5th, 419, No. 710.

Can reduce signal transmission path and make the packing forms of encapsulation volume minimum is pad grid array (LGA) encapsulation, its integrated circuit encapsulation utilizes conductive spacer to reach by interference fit mutually with the conductive spacer on the corresponding electric connector and electrically conducts, its correlation technique document please refer to Nonlinear Analysis HelpsDesign LGA Connectors (Connector Specifier, February, 2001), relevant patent please refer to United States Patent (USP) the 5th, 192, No. 213, the 5th, 199, No. 889, the 5th, 232, No. 372, the 5th, 320, No. 559 and the 5th, 362, No. 241 grades disclose.

As Fig. 1～2 be depicted as the known a kind of existing electric connector 1 of industry ', be used for integrated circuit encapsulation 30 ' be electrically connected to circuit board 32 ', its mainly comprise be equipped with plurality of conductive terminals 7 ' insulating body 2 ', frame be located at the reinforced sheet 4 of insulating body 2 ' periphery ', respectively rotatable be assembled in reinforced sheet 4 ' relative both sides pressing plate 5 ' reach rocking bar 6 '.Insulating body 2 ' upside be provided with in order to accommodate integrated circuit encapsulation 30 ' receiving space 20 ', insulating body 2 ' downside be provided with the diapire 22 of receiving space 20 ' adjacent ', run through a plurality of terminal holes 24 that diapire 22 ' be provided with array way arranges '.Terminal hole 24 ' relative both sides respectively be provided with a step, thereby make the holding hole 242 of terminal hole 24 ' the have bigger accepting hole of upside width 246 ' less with the downside width ', holding hole 242 ' and accepting hole 246 ' between have step surface 248 '.The flat holding parts 70 of terminal 7 ' be provided with ', holding parts 70 ' the both sides, upper end convex with respectively a shoulder 703 ', two shoulders 703 ' width dimensions greater than holding hole 242 ', and shoulder 703 ' be contained in accepting hole 246 ' in, and be connected to step surface 248 ' go up with guarantee terminal 7 ' can not deviate from downwards insulating body 2 '.Holding parts 70 ' the both sides, lower end respectively be provided with pair of projections 701 ', boss 701 ' can with holding hole 242 ' interference engagement.From holding parts 70 ' be extended with downwards perpendicular to the weld part 71 of holding parts 70 ' direction bending ', weld part 71 ' be connected with can be welded in circuit board 32 ' on tin ball 710 '.

Yet, for electric connector 1 ' actual environment for use in, always there are reasons such as vibrations, impact, temperature and manufacturing, thereby can make insulating body 2 ' diapire 22 ' certain part move up, step surface 248 ' also moves on can be thereupon, and terminal 7 ' be welded in circuit board 32 ' on, so can cause terminal hole 24 ' step surface 248 ' on move and to terminal 7 ' generation active force, make terminal 7 ' and circuit board 32 ' between be welded to connect and bear big stress, and may cause it to burst apart, thereby the influence electric connection is stable.

Therefore, the utility model is provides a kind of electric connector that improves at above-mentioned defective.

[utility model content]

The purpose of this utility model is to provide a kind of slowing down to be welded to connect the stress that bears at the position to guarantee the stable electric connector that electrically connects.

The purpose of this utility model is so to realize: a kind of electric connector that the integrated circuit encapsulation is electrically connected to circuit board, it comprises the insulating body that is provided with a plurality of terminal holes and is contained in the interior a plurality of conducting terminals of terminal hole, the insulating body upside is provided with the receiving space that can accommodate the integrated circuit encapsulation, downside is provided with the diapire adjacent with receiving space, terminal hole runs through this diapire setting, and being provided with bigger accepting hole of upside width and the less holding hole of downside width, accepting hole and holding hole connect; Terminal is provided with holding parts and extends from the holding parts lower end and can be welded in weld part on the circuit board, the relative both sides of holding parts corresponding terminal hole width direction are provided with straight mating edge, width between two mating edges is greater than the width of holding hole, width less than accepting hole, after terminal is packed terminal hole into, two mating edges and holding hole interference engagement.

Relative prior art, the utility model electric connector terminal cooperates with holding hole with straight mating edge and is immobilizated in the insulating body, like this, when making the certain mobile or warpage of insulating body because of influences such as vibrations, impact, temperature, terminal can its with the effect that is welded to connect of circuit board under relative insulating body take place necessarily to move up and down, can slow down like this and be welded to connect the stress that bear at the position, reduce to be welded to connect destroyed by overstress, thereby improve the stability that electric connector electrically connects.

[description of drawings]

Fig. 1 is the three-dimensional exploded view of existing electric connector and integrated circuit encapsulation.

The partial sectional view that Fig. 2 cooperates with terminal for existing electric connector insulating body.

Fig. 3 is the three-dimensional exploded view of the utility model electric connector and integrated circuit encapsulation.

Fig. 4 is the stereogram of the utility model electric connector terminal.

Fig. 5 is the partial sectional view that the utility model electric connector insulating body cooperates with terminal.

[embodiment]

Consult Fig. 3 to Fig. 5, electric connector 1 of the present utility model is used for integrated circuit encapsulation 30 is electrically connected to circuit board 32, and it comprises that mainly the insulating body 2, the frame that are equipped with plurality of conductive terminals 7 be located at the reinforced sheet 4 of insulating body 2 peripheries, rotatable pressing plate 5 and the rocking bar 6 that is assembled in the relative both sides of reinforced sheet 4 respectively.

The upside of insulating body 2 is provided with in order to accommodating the receiving space 20 of integrated circuit encapsulation 30, and its downside is provided with the diapire 22 adjacent with receiving space 20.Run through diapire 22 and be provided with a plurality of terminal holes 24 that array way is arranged, the relative both sides of terminal hole 24 respectively are provided with a step, thereby make terminal hole 24 have bigger accepting hole of upside width 246 and the less holding hole 242 of downside width, accepting hole 246 connects up and down with holding hole 242, and has the step surface 248 of inclination between holding hole 242 and the accepting hole 246.

Terminal 7 forms for the sheet stamping moulding, and it is provided with flat holding parts 70, reaches from holding parts 70 upwardly extending elastic portion 76 from the holding parts 70 downward weld parts that extend 71.Holding parts 70 is provided with straight mating edge 701 in the relative both sides of its Width, the width that two mating edges are 701 is greater than the width of holding hole 242, width less than accepting hole 246, the lower end of two mating edges 701 respectively is provided with a guide edge 703 that tilts, when terminal 7 is packed terminal hole 24 into, 703 guide functions of two guide edges, terminal 7 is packed into behind the terminal hole 24, two mating edges 701 and holding hole 242 suitable interference engagement, thereby terminal 7 can be immobilizated in the insulating body 2, and can make terminal 7 be subjected to certain active force the time, terminal 7 is insulating body 2 slide along the vertical direction (checking is comparatively suitable when amount of interference is 0.005～0.02 millimeter by experiment) relatively.Holding parts 70 is made as flat surface in the both sides of its thickness direction, and this flat surface and terminal hole 24 are matched in clearance.Weld part 71 is perpendicular to holding parts 70 directions bendings and have and be linked to holding parts 70 and the width part narrow than holding parts 70, and weld part 71 downsides are connected with the tin ball 710 that can be welded on the circuit board 32.Holding parts 70 upper ends are connected with elastic arm 76, and own elasticity arm 76 upper ends have extended contact site 78 perpendicular to holding parts 70 directions, and contact site 78 is exposed to diapire 22 upper surfaces.

Pressing plate 5 is lamellar, and rotary pressure plate 5 and rocking bar 6, pressing plate 5 is pressed in pack in the integrated circuit encapsulation 30 of receiving space 20, thereby guarantees the stable of integrated circuit encapsulation 30 and termination contact portion 78 above-below direction face contacts.

After electric connector 1 is welded on the circuit board 32, because the straight mating edge 701 and terminal hole 24 interference engagement of the utility model electric connector terminal 7, even so in vibrations, impact, reason such as temperature strain and manufacturing makes insulating body 2 produce certain buckling deformation or moves a certain distance up and down, terminal 7 is under the effect that is welded to connect of itself and circuit board 32, terminal hole 24 moves up and down relatively, and can between terminal 7 and terminal hole 24, not produce big active force and help slowing down the stress that bears that is welded to connect between electric connector terminal 7 and the circuit board 32, prevent that effectively overstress from destroying being welded to connect between terminal 7 and the circuit board 32, prolong the life-span that is welded to connect, it is stable to help guaranteeing that electric connector electrically connects.

Claims (8)

1. one kind is electrically connected to the electric connector of circuit board with integrated circuit encapsulation, and it comprises the insulating body that is provided with a plurality of terminal holes and be contained in a plurality of conducting terminals in the terminal hole that terminal hole runs through this insulating body setting; Terminal is provided with holding parts and extends the weld part that also can be welded on the circuit board from the holding parts lower end, and it is characterized in that: terminal hole is provided with bigger accepting hole of upside width and the less holding hole of downside width, and accepting hole and holding hole connect; The relative both sides of holding parts corresponding terminal hole width direction are provided with straight mating edge, and the width between two mating edges is greater than the width of holding hole, and less than the width of accepting hole, two mating edges and holding hole are reached interference engagement.

2. electric connector as claimed in claim 1 is characterized in that: holding parts is lamellar, and mating edge is arranged at the both sides of holding parts Width, and the both sides of holding parts thickness direction are made as smooth flat.

3. electric connector as claimed in claim 2 is characterized in that: terminal respectively is provided with a guide edge that tilts in the lower end of two mating edges.

4. electric connector as claimed in claim 1 is characterized in that: the step surface that is provided with inclination between accepting hole and the holding hole in the both sides of Width.

5. electric connector as claimed in claim 1 is characterized in that: this insulating body upside is provided with the receiving space that can accommodate the integrated circuit encapsulation, and downside is provided with the diapire adjacent with receiving space, and terminal hole runs through this diapire setting,

6. electric connector as claimed in claim 5 is characterized in that: this electric connector comprises that also frame is located at the reinforced sheet of insulating body periphery, rotatable pressing plate and the rocking bar that is assembled in the relative both sides of reinforced sheet respectively.

7. electric connector as claimed in claim 6 is characterized in that: the upside of insulating body is provided with in order to accommodating the receiving space of integrated circuit encapsulation, and rotary pressure plate and rocking bar, and pressing plate is pressed in the integrated circuit encapsulation of the receiving space of packing into.

8. electric connector as claimed in claim 1 is characterized in that: holding parts two mating edges are parallel to the sidewall of accepting hole, and have the gap between the sidewall of mating edge and accepting hole.

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