CN1315229C

CN1315229C - Sket for pin grid array package

Info

Publication number: CN1315229C
Application number: CNB028150015A
Authority: CN
Inventors: 平田智久
Original assignee: Molex LLC
Current assignee: Molex LLC
Priority date: 2001-07-30
Filing date: 2002-07-22
Publication date: 2007-05-09
Anticipated expiration: 2022-07-22
Also published as: WO2003012929A1; CN1537346A; WO2003012929B1; TW551633U; JP2003059605A

Abstract

A PGA socket having structure that permits the slide plate to be kept center-aligned while moving on the base housing, thus assuring that reliable electric connections be established between the PGA lead pins and the terminals of the socket. The PGA socket includes a base housing and a slide plate, the slide plate being movable between a first, or lead pin inserting position, in which the lead pins of the pin grid array package can be inserted in the through holes and the terminal mounts and a second, or locking position, in which the lead pins are applied to the terminals in the terminal mounts. The PGA socket includes at least one resilient piece on either the base housing or the slide plate and that other of the base housing or slide plate has an engagement means for receiving the at least one resilient piece. The resilient piece may be engaged with the engagement means in such a manner that the slide plate is kept aligned relative to its center when it is operated between the first position and the second position. Moreover, the PGA socket may include two resilient pieces, and the two resilient pieces may be arranged symmetrically with respect to the centerline of the base housing.

Description

The socket that is used for the pin grid array plug-in unit

Technical field

The present invention relates to a kind of socket that is used for pin grid array plug-in unit (Pin Grid Array package is hereinafter to be referred as " PGA plug-in unit ").

Background technology

Existing pga socket comprises a basic shell, is equipped with a plurality of terminals that are arranged in pin grid array on the terminal installation portion of this base shell, and the arrangement of terminal is corresponding with the arrangement of the pin of pin grid array plug-in unit; And a tabular slide block, this slide block has a plurality of through holes that are arranged in array, and the arrangement of through hole is identical with the arrangement of terminal and coupling is corresponding, the corresponding terminal of each through hole.Slide block can move forward and backward between pin insertion position and locked position of coupler, in described pin insertion position, the pin of PGA plug-in unit can insert through hole and terminal installation portion under the state of very little or zero insertion force, at described locked position of coupler, the termination contact in the pin of described insertion and the terminal installation portion.

Described slide block has can make the slide block slide mechanism that move front and back on basic shell.In an instantiation, slide mechanism comprises the camshaft and the lever that is arranged on basic shell longitudinal side that are rotatably installed in basic shell-side face, is used to make this camshaft to rotate (for example, a day disclosure special permission communique No. put down into 7 years-142134).In another instantiation, slide mechanism comprises the cam member that passes of slide block from basic shell and below being arranged on, use rotatable this cam member of screwdriver, thereby make slide block front and back on basic shell move (for example, a day disclosure special permission communique No. put down into 11 years-513837).

Described pga socket use basic shell and can be on basic shell before and after the slide block that moves.Because tolerance or allowable deviation, the gap that combines between basic shell and the slide block has surpassed the preset clearance that needs permission slide block slides on basic shell yet in fact.Above-mentioned this important loosening what problem that do not cause, this is that adjacent pin can be separately than bigger distance of tolerance because the pin number that relevant PGA plug-in unit has is very little.At present, the pin number in the pga socket has the trend of increase, and the distance between the adjacent leads just correspondingly reduces, so that excessive gap can have a negative impact in required electric connection.

Summary of the invention

The objective of the invention is to, a kind of socket that is used for the pin grid array plug-in unit is provided, to have excessive gap between the basic shell that overcomes existing socket and the slide block, so that the technical problem that in required electric connection, has a negative impact.

Another object of the present invention is to, a kind of socket that is used for the pin grid array plug-in unit is provided, can be so that slide block keep when sliding on basic shell the center line of slide block to aim at the center line of basic shell, thus guarantee electric connection reliably between the terminal of PGA pin and socket.

For achieving the above object, the utility model has disclosed a kind of socket that is used for the pin grid array plug-in unit, and described pin grid array plug-in unit has a plurality of pins; Described socket comprises: a basic shell has a plurality of terminals in its terminal installation portion; A slide block, this slide block has a plurality of through holes, and can between a primary importance and a second place, move forward and backward, in described primary importance, the pin of pin grid array plug-in unit can insert through hole and terminal installation portion, in the described second place, the termination contact in the pin of described insertion and the terminal installation portion; It is characterized in that one in described basic shell and the slide block has a pair of flexure strip, another has a projection, and this projection is placed in this between the flexure strip.

The engagement system of described flexure strip and described projection is when slide block slides between the described primary importance and the second place, to keep the center line of slide block to aim at the center line of basic shell.

This PGA plug-in unit can have a pair of flexure strip, and described a pair of flexure strip is for a center line symmetric arrangement of basic shell.

Can have one or more flexure strips on one side of described basic shell, and can have one or more flexure strips on another side of described slide block.

Description of drawings

Fig. 1 is the vertical view of pga socket of the present invention;

Fig. 2 is the vertical view of the basic shell of pga socket among Fig. 1;

Fig. 3 is the vertical view of the slide block of pga socket among Fig. 1;

Fig. 4 is the end view of the slide block among Fig. 3.

Embodiment

Though the present invention can make multi-form embodiment as shown in drawings, and be described in detail at this, but current announcement for specific embodiment should be understood that it is the illustration of the principle of the invention, and the institute's situation explaining and describe of not really wanting to limit the invention to here.

Consult Fig. 1, pga socket 10 of the present invention comprises the slide block 30 that covers on the basic shell 20 of a rectangle and.

Have a plurality of terminals 21 in the terminal installation portion of base shell 20, the pin number identical (as shown in Figure 2) of the quantity of terminal 21 and PGA plug-in unit.The arrangement of terminal installation portion 21a is identical with the arrangement of PGA plug-in unit pin.Each terminal 21 rear side extends an afterbody, and when terminal was inserted into selected terminal installation portion, afterbody appeared on the lower surface of basic shell 20.The end face of each terminal installation portion is open, thus the pin of can ccontaining one selected PGA plug-in unit.

Slide block 30 has a plurality of through holes 31, and the arrangement of through hole 31 is corresponding to the arrangement of terminal 21 and PGA plug-in unit pin, and three's quantity is identical.Each through hole is distributed to a corresponding terminal 21.Slide block 30 has two L shaped plates, and the relative longitudinal side of two plates is whole to link to each other, and relies on the L shaped plate on the guide protrusions of the relative longitudinal side that is arranged on basic shell 20, and slide block 30 can be positioned on the basic shell 20 and move.Like this, slide block 30 can move forward and backward between pin insertion position and locked position of coupler, and in described pin insertion position, the pin of PGA plug-in unit can insert through hole 31 and terminal installation portion, at described locked position of coupler, the terminal 21 in the pin of insertion and the terminal installation portion contacts.

Cam member 22 centers have a hexagonal hole 22a, and this cam member 22 is rotatably fixed to a side of basic shell 20, have an oval-shaped opening 32 on the side of slide block 30.Cam member 22 is installed in the oval-shaped opening 32, and slide block 30 is positioned on the basic shell 20.At first, slide block 30 is positioned at pin insertion position (as shown in Figure 1), and in this position, not needing provides a tangible thrust to the PGA plug-in unit, and the pin of PGA plug-in unit just can insert the through hole 31 of slide block 30 and the terminal installation portion of basic shell 20.

By in hexagonal hole 22a, inserting a hexagon instrument and rotating this instrument, cam member 22 turns over 180 degree around eccentric shaft 23 (as shown in Figure 2) along the clockwise direction shown in the arrow B, at this moment, the reverse side 32a that cam member 22 promotes oval-shaped opening 32 make slide block 30 on basic shell 20 as shown by arrow A direction move, thereby move each through hole with respect to fixing 21 1 sections definite short distances of terminal.Like this, slide block is located in locked position of coupler, and in this position, the pin of insertion slide block 30 through holes 31 contacts with the terminal 21 in the terminal installation portion that is fixed on basic shell 20.Thereby realized that excellent electrical property connects between the reverse terminal 31 of each pin of PGA plug-in unit and pga socket.

As shown in Figure 2, be formed with a flank part 24 on the side of basic shell 20, form one group of protuberance 25 on another side.Terminal 21 is installed on the main flat board 26 of basic shell 20.Flank part 24 is made up of an intermediate plate 24a and a top plate, and both are connected with main dull and stereotyped 26 integral body of basic shell 20.Have a rectangular recess in the middle of the top plate, cam eccentric shaft 23 is arranged on the rectangular recess center.Cam member 22 is fixed to the cam pedestal 29 that is limited by rectangular recess.

The relative longitudinal centre line D of the shape symmetry of base shell 20.Intermediate plate 24a has two the groove 27a and the 27b that are positioned at the below of rectangular cam pedestal 29 and are oppositely arranged, and near two the groove 28a and the 28b that are arranged on the reverse longitudinal side of basic shell 20.

Protuberance group 25 is two narrow relatively elastic bumps 25c and 25d and two wide rigid projections 25a and 25b.The relative longitudinal centre line D with 25d of elastic bumps 25c symmetry, rigid projections 25a and 25b are provided with to prevent elastic bumps 25c and 25d flexural deformation near elastic bumps 25c and 25d.

As shown in Figure 3, slide block 30 comprises a rectangular flat 33, and dull and stereotyped 33 have the rectangular preiection 34 that an integral body is connected to the one side.Rectangular preiection 34 can be installed in the rectangular recess 29 of basic shell 20, and oval-shaped opening 32 is positioned at the center of rectangular preiection 34.

The rectangular flat 33 of slide block 30 has two narrow

elastic bumps

37a and 37b, and two wide rigid projections 35a and 35b, and above-mentioned projection is arranged on the side that is formed with rectangular preiection 34.

Elastic bumps

37a and 37b are near the opposite side of rectangular preiection 34, and rigid projections 35a and 35b are near the opposite side setting of the rectangular flat 33 of slide block 30.

The shape and size of

projection

37a and 37b are set like this, promptly when slide block 30 is positioned on the basic shell 20, by allow protruding 37a and 37b groove 27a and 27b in conjunction with wall 27c and 27d on to slide be that opposite side towards rectangular preiection 34 is crooked more or less, protruding 37a and 37b can insert groove 27a and 27b.

Consult Fig. 4, slide block 30 has a projection 38, and this projection 38 is formed on the side of rectangular flat 33 and installation side thereof opposite cam member 22.The width of projection 38 is greater than the spacing of elastic bumps 25c and 25d separation.Like this, projection 38 just is clipped between elastic bumps 25c and the 25d tightly.

The projection that L shaped relatively projection by slide block 30 is formed on the vertical relatively face of basic shell 20 is clamped, and slide block 30 is placed on the basic shell 20 by interference fit.In this position, slide block 30 is because tolerance can not snugly fit on the basic shell 20, and therefore in the PGA of routine dongle configuration, slide block 30 will slide on basic shell 20 and just send rattling noise unavoidably.

Slide block 30 moves in the opposite direction along side shown in arrow A (Fig. 1).Then, the rectangular preiection 34 of slide block 30 is pushed in the rectangular recess 29 of basic shell 20 fully, thereby the elastic bumps 37a of

slide block

30 and 37b and rigid projections 35a and 35b enter the groove 27a of basic shell 20 respectively, 27b and 28a, in the 28b, simultaneously, the elastic bumps 25c that entered at basic shell 20 of the projection 38 of slide block 30 and the gap between the 25d.

Subsequently,

elastic bumps

37a and 37b more or less are bent, groove 27a and 27b in conjunction with wall 27c and 27d on slide, thereby produce the both sides that an elastic force offers slide block 30, reduced the loosening degree between slide block 30 and the basic shell 20.Simultaneously, projection 38 gaps that can enter between elastic bumps 25c and 25d.Its result is exactly, and slide block 30 at the stroke that leads to final fixed position and longitudinal centre line D in line.Like this, no matter how the pin number of PGA plug-in unit increases (no matter how the distance perhaps between the pin reduces), the through hole 31 of slide block 30 and the terminal 21 of basic shell 20 can be aimed at exactly.

That use in above-mentioned specific embodiment is two

cover flexure strip

37a, 37b and 25c and 25d, and geared assembly 27c, 27d (with the form of wall surface) and 38 (with the forms of projection).Yet cover flexure strip and a geared assembly also can satisfy eliminates crackling purpose, adopts the combination of flexure strip and geared assembly to be placed in longitudinal centre line one side and substitutes symmetric arrangement described above and equally also can satisfy goal of the invention.

Though specific embodiments of the invention are described in detail for explanation, do not break away from the spirit and scope of the present invention and can also make different changes and improvement.Therefore, the present invention should limit with claim.

Claims

1, a kind of socket that is used for the pin grid array plug-in unit, described pin grid array plug-in unit has a plurality of pins; Described socket comprises:

A basic shell has a plurality of terminals in its terminal installation portion;

A slide block, this slide block has a plurality of through holes, and can between a primary importance and a second place, move forward and backward, in described primary importance, the pin of pin grid array plug-in unit can insert through hole and terminal installation portion, in the described second place, the termination contact in the pin of described insertion and the terminal installation portion;

It is characterized in that one in described basic shell and the slide block has a pair of flexure strip, another has a projection, and this projection is placed in this between the flexure strip.

2, the socket that is used for the pin grid array plug-in unit as claimed in claim 1 is characterized in that, described flexure strip is positioned on the basic shell, and described projection is positioned on the slide block.

3, the socket that is used for the pin grid array plug-in unit as claimed in claim 2 is characterized in that, the distance between the described a pair of flexure strip is less than the width of described projection.

4, the socket that is used for the pin grid array plug-in unit as claimed in claim 2 is characterized in that, the described flexure strip outside has a pair of rigid disk.

5, the socket that is used for the pin grid array plug-in unit as claimed in claim 2 is characterized in that, described slide block comprises at least one elastic bumps, and it is positioned at described raised position opposite end, and described basic shell is provided with a groove that is used for ccontaining described elastic bumps.

6, the socket that is used for the pin grid array plug-in unit as claimed in claim 1, it is characterized in that, the engagement system of described flexure strip and described projection is when slide block slides between the described primary importance and the second place, to keep the center line of slide block to aim at the center line of basic shell.

7, the socket that is used for the pin grid array plug-in unit as claimed in claim 2, it is characterized in that, the engagement system of described projection and described flexure strip is when slide block slides between the described primary importance and the second place, to keep the center line of slide block to aim at the center line of basic shell.

8, the socket that is used for the pin grid array plug-in unit as claimed in claim 1 is characterized in that, described flexure strip is positioned on the slide block, and described projection is positioned on the basic shell.

9, the socket that is used for the pin grid array plug-in unit as claimed in claim 8 is characterized in that, the distance between the described a pair of flexure strip is less than the width of described projection.

10, the socket that is used for the pin grid array plug-in unit as claimed in claim 8 is characterized in that, the described flexure strip outside has a pair of rigid disk.

11, the socket that is used for the pin grid array plug-in unit as claimed in claim 8 is characterized in that, described basic shell comprises at least one elastic bumps, and it is positioned at described raised position opposite end, and described slide block is provided with a groove that is used for ccontaining described elastic bumps.

12, the socket that is used for the pin grid array plug-in unit as claimed in claim 8, it is characterized in that, the engagement system of described projection and described flexure strip is when slide block slides between the described primary importance and the second place, to keep the center line of slide block to aim at the center line of basic shell.

13, the socket that is used for the pin grid array plug-in unit as claimed in claim 1 is characterized in that, described a pair of flexure strip is by the center line symmetric arrangement of basic shell.

14, the socket that is used for the pin grid array plug-in unit as claimed in claim 2 is characterized in that, described a pair of flexure strip is by the center line symmetric arrangement of basic shell.

15, the socket that is used for the pin grid array plug-in unit as claimed in claim 8 is characterized in that, described a pair of flexure strip is by the center line symmetric arrangement of basic shell.