CN100344216C

CN100344216C - Pin grid array package socket

Info

Publication number: CN100344216C
Application number: CNB028088832A
Authority: CN
Inventors: 平田智久; 笹尾正美
Original assignee: Molex LLC
Current assignee: Molex LLC
Priority date: 2001-04-25
Filing date: 2002-04-25
Publication date: 2007-10-17
Anticipated expiration: 2022-04-25
Also published as: TW529826U; WO2002087292A2; JP2002329562A; WO2002087292A3; CN1505919A; AU2002256362A1

Abstract

Disclosed is an unlocking-proof PGA package socket which is so designed that upon the slide plate being put in its locking position for fastening a PGA package to the socket the longest vector of the circular cam member runs beyond the point of contact at which the cam member is put in contact with the slide plate, thereby allowing the kickback to push the cam member in the direction opposite to the direction in which the cam member turns toward unlocking position.

Description

The packaging receptacle of pin grid array

Technical field

The present invention relates to a kind of packaging receptacle (pin grid array package socket) of pin grid array, be used for the electrical connection between a pin grid array assembly (hereinafter to be referred as the PGA assembly) and the associated circuits.

Background technology

A kind of PGA packaging receptacle of routine comprises a base housing and a slide, and this housing comprises the conducting terminal that several are arranged with palisade, and slide has the through hole that some corresponding palisades are arranged.Slide is positioned on the base housing, and can between the primary importance and the second place, move, the guide needle of PGA assembly is not having masterpiece to be used for just can inserting in the conducting terminal that is installed in the base housing under the situation of PGA assembly in the primary importance, and the guide needle conducting terminal interior with being installed in pedestal contacts in the second place.

Slide comprises that at an example of the mechanism that moves on the base housing camshaft that extends and is positioned at the handle of base housing one side on the pedestal back side edge, be connected on the camshaft and (see Japanese patent application plan publication number 7-1442134,4-319277,56-125861 and 11-185914).Another example of slide drive unit comprises a cam member, and it passes base housing and slide.The head of this cam member has a recess, is used for a ccontaining screwdriver or a undersized hexagonal socket wrench.Use such instrument to replace the handle can the translating cam element.

Referring to Fig. 7 (a), a PGA packaging receptacle has the cam member 10 that passes base housing and slide.Cam member 10 is round, the relative lateral parts contact of the cam hole 18 on its outer circumference surface 12 and the slide 11.

The pivot of cam member 10 (dotted line) 13 has a center 13a, departs from the center 12a of the excircle 12 of cam member 10.Hexagonal socket wrench is inserted in the hex hole 14 of head of cam member 10, with the direction rotation of arrow A indication.The situation shown in Fig. 7 (b) so just occurred, slide 11 moves with the direction of arrow B indication.

Especially, cam member 10 promotes slide 11 by apply a thrust X to slide 11.When radial protrusion 15 leaned against on the retainer 16, cam member 10 stopped operating.Guide needle at this position PG assembly contacts with the conducting terminal of socket, therefore, can produce the counter-force (see Fig. 7 (b)) of a recoil strength Y as thrust X by the synthetic bounce of all guide needle.Recoil strength Y is along with the number of terminals of the guide needle of PGA assembly increases and increases.

Shown in Fig. 7 (b), thrust X is opposite with recoil strength Y.Because accidental cause, these power are no longer opposite, and cam member 10 can be by the direction rotation of arrow C indication like this.As a result, the guide needle of PGA assembly and the electric connection between the female terminal have just been unclamped.

In order to address this problem, shown in Fig. 8 (a), cam member 20 has the plane 22 of the side of cutting sth. askew, and promotes slide 21 at this side overhead cam element 20, and locks in this position.Cam member 20 is not round, allows between the side of cam hole 23 that a big gap appears at the excircle of cam member 20 and slide 21.The function of zero insertion force caused secondary face to ring when so big gap was easy to the guide needle of PGA assembly and terminal assembling, because slide can move up and down.Disadvantageous also have, and when cam member 20 during from non-locked position (seeing Fig. 8 (b)) steering locking position (seeing Fig. 8 (a)), conversion or the load of turning 22a of cam member 20 from the curved surface to the plane is undesired, turning 22a easy deformation.Reduce this useful life that just means cam.

Summary of the invention

An object of the present invention is to provide a kind of PGA packaging receptacle, it can use the cam member of a circle, guarantees again that simultaneously the circular cam element do not shift to nonlocking position when arriving latched position.

In order to achieve the above object, a kind of pin grid array package socket comprises a base housing and a slide, this base housing comprises the conducting terminal that several are arranged with palisade, slide has the through hole of a location hole and some corresponding palisade arrangements, slide is positioned on the base housing, and can between the primary importance and the second place, move, the guide needle of pin grid array assembly is not having masterpiece to be used for just can inserting under the situation of pin grid array assembly in the through hole on the slide in primary importance, and guide needle contacts with conducting terminal in being installed in pedestal in the second place.The improved place of the present invention is that base housing has a cam member, be rotatably mounted in the location hole, cam member rotates with a predetermined direction like this, make the excircle of cam member promote the location hole opposite surfaces, thereby make slide move to the second place, like this, the long vector of cam member places the deviation post of contact position front, contacts with the opposed surface of location hole at the excircle of this position cam member.

The excircle of cam member is round.

Cam member can be arranged in the recess of base housing, and has a whole radial protrusion that connects, blocking radial protrusion with the inwall of recess stops cam member, be positioned on the slide like this, when the long vector of cam member places the deviation post of contact position front, radial protrusion can be blocked by inwall, contacts with the opposed surface of location hole at the excircle of this contact position cam member.

A kind of pin grid array package socket, comprise a base housing and a slide, this base housing comprises the conducting terminal that several are arranged with palisade, slide has the through hole of a location hole and some corresponding palisade arrangements, slide is positioned on the base housing, and can between the primary importance and the second place, move, the guide needle of pin grid array assembly is not having masterpiece to be used for just can inserting under the situation of pin grid array assembly in the through hole on the slide in primary importance, and guide needle contacts with conducting terminal in being installed in pedestal in the second place.The improved place of the present invention is that base housing has a cam member, be rotatably mounted in the location hole, cam member rotates with a predetermined direction like this, make the excircle of cam member promote the location hole opposite surfaces, and the center of cam member excircle places the deviation post away from the cam member pivot center, makes slide move to the second place like this.

Other purpose of the present invention, feature and advantage will be apparent in conjunction with the accompanying drawings from following detailed.

Description of drawings

Also be appreciated that the present invention and purpose and advantage in conjunction with the accompanying drawings with reference to following detailed, label identical among the figure is represented components identical.

Fig. 1 is according to the plane graph of one embodiment of the invention PGA packaging receptacle at non-locked position;

Fig. 2 is the plane graph of PGA packaging receptacle in latched position;

Fig. 3 (a) is the amplification view of cam member at non-locked position, and Fig. 3 (b) is the amplification view of cam member in latched position;

Fig. 4 (a) is the amplification inclinating view of embodiment of the invention cam member, and Fig. 4 (b) is the amplification profile of embodiment of the invention cam member;

Fig. 5 is the part equal proportion enlarged drawing of base housing, shows pivot 31d, the relation of recess 31a and cam member 35;

Fig. 6 is the part excision side view of pga socket;

Fig. 7 (a) be cam member in the conventional PGA packaging receptacle at the amplification view of latched position, Fig. 7 (b) is the amplification view of cam member at non-locked position; And

Fig. 8 (a) be cam member in another conventional PGA packaging receptacle at the amplification view of latched position, Fig. 8 (b) is the amplification view of cam member at non-locked position.

Embodiment

As shown in the drawing, the present invention can accept different form embodiment, will describe a specific embodiment in detail at this, this time openly thinks the embodiment of aim of the present invention, but is not limited to illustrated in the present invention and the content of describing.

Referring to Fig. 1 and Fig. 2, a pin grid array package socket 30 comprises that the base housing 31 and of a rectangle is positioned at the slide 32 on the base housing 31.Base housing 31 comprises the conducting terminal that several are arranged with palisade, slide 32 has the through hole 33 that some corresponding palisades are arranged, slide 32 is positioned on the base housing 31, be in first or during non-locked position at slide 32, allow the guide needle of PGA assembly (not shown) to insert in the through hole 33.When slide 32 moves to second or during latched position, the guiding money of PGA assembly contacts with terminal in being installed in base housing 31.Like this, just realized the electric connection between the terminal of the guide needle of PGA assembly and pedestal 31 housings, simultaneously, guide needle and terminal are fixed together.Slide 32 is provided with location hole or cam hole 34, and cam member 35 is fixed in the cam hole 34.

As Fig. 4 (a) (b) and shown in Figure 5, cam member 35 has one be used for the supported hole 35b, a hexagonal recesses 36 and the radial protrusion 43 in the bottom at head that slide on the pivot 31d of base housing 31.

As shown in Figure 5, be formed with a pivot 31d among the recess 31a.Two inwall 31b are connected pivot 31d with 31c.When the radial protrusion 43 of cam member 35 inserted recess 31a, the motion of radial protrusion 43 was just limited by inwall 31b and 31c.Therefore cam member 35 can clockwise or be rotated counterclockwise 180 degree (shown in the double-head arrow E of Fig. 1).

As shown in Figure 1, radial protrusion 43 is in nonlocking position.Cam stop device 50 can be an element independently, or with slide 32 one, itself and radial protrusion 43 overlap, and stop projection to be deviate from.Fig. 6 shows the cutaway view of cam stop device 50.Turn clockwise in the hexagonal recess 36 of hexagonal socket wrench insertion cam member 35 heads.Then, the excircle 40 of cam member 35 is with the rear surface 32a of the promotion of the direction (see figure 2) shown in arrow F slide 32, and up to as described below, cam member 35 is locked.Cam member 35 can not unclamp, and is rotated counterclockwise unless hexagonal socket wrench inserts in the hexagonal recess of cam member 35 again.

Referring to Fig. 3 (a), the excircle 40 of cam member 35 is round, and cam member 35 following pivots 41 agree have a center 41a, depart from the central point 40a of the excircle 40 of cam member 35.In specific embodiment, cam member 35 must (be seen Fig. 3 (a) and Fig. 1) rotates 180 and spend latched position and (see Fig. 3 (b) and Fig. 2) from non-locked position.The center 41a of pivot 41 is positioned at from the center of excircle 40 40a to the clockwise position, line front that some 32b extends, and at a 32b place, the excircle 40 of cam member 35 contacts with the rear surface 32a of slide 32.

The longest vector, thrust M are derived from the center 41a of pivot 41, point to the excircle 40 of cam member 35 through the center 40a of excircle 40 from center 41a.Cam member 35 Rotate 180 degree arrive latched position (seeing Fig. 3 (b)), and the radial protrusion 43 of cam member 35 leans against on the inwall 32c then.In this position, long vector M turns over the excircle 40 and the contacted contact point 32b of rear surface 32a of cam member 35.

As mentioned above, when the PGA assembly was installed on the socket 30, cam 35 had born the recoil strength Y from PGA assembly guide needle.The point of vector M moves along rear surface 32a from the center 40a of the center 41a sensing excircle 40 of pivot 41, recoil strength Y can apply a revolving force (instantaneous) and make the rotation of cam member 35 clockwise direction latched positions like this, with opposite towards being rotated counterclockwise of non-locked position.So do not worry that the PGA assembly is connected on the socket and can unclamp.And, this set advantage is to allow to use circular cam member 35, guaranteeing except manufacturing tolerance, no longer the occurring gap between cam hole 34 and the cam member 35, and when using the PGA assembly, can not cause secondary face loud to the guide needle zero insertion force to socket.

Be appreciated that from foregoing, according to the present invention, the PGA component design is, slide is placed on latched position, with fixing PGA assembly to socket, the long vector of circular cam element turns over cam member and the contacted contact point of slide, thus make recoil strength with cam member to side that non-locked position rotates actuating cam element in the opposite direction.

Preferred embodiment of the present invention as mentioned above, those skilled in the art can carry out various variations under the situation that does not deviate from spiritual main idea of the present invention and claim scope.

Be appreciated that the present invention can implement with other modes, and do not deviate from its spiritual main idea.Existing example and embodiment are for illustrative purposes rather than the purpose in order to limit.So restriction that the present invention is not described by these details should.

Claims

1. a pin grid array package socket (30) comprising:

One base housing (31), have several conducting terminals of arranging with palisade and

One slide (32), has the through hole (33) that a location hole (34) and some corresponding palisades are arranged, this slide (32) is positioned on the base housing (31), and can between the primary importance and the second place, move, the guide needle of pin grid array assembly can be inserted in the through hole (33) on the slide (32) in primary importance, guide needle contacts with conducting terminal in being installed in base housing (31) in the second place, it is characterized in that:

Base housing (31) has a cam member (35) that is rotatably mounted in the location hole (34), the rotation of cam member (35) makes the excircle (40) of cam member (35) engage with the rear surface (32a) of location hole (34), thrust sensing towards this rear surface departs from a deviation post of rear surface (32a), and recoil strength can not make slide move to primary importance from the second place.

2. pin grid array package socket as claimed in claim 1 (30) is characterized in that: the excircle of described cam member (35) is round.

3. pin grid array package socket as claimed in claim 1 (30) is characterized in that: described cam member (35) comprises the radial protrusion that a restriction cam member moves.

4. pin grid array package socket as claimed in claim 1 (30) is characterized in that: described base housing comprises the recess (31a) of a ccontaining cam member.

5. pin grid array package socket as claimed in claim 4 (30) is characterized in that: described recess (31a) comprises at least one inwall, the moving of this inner wall limit cam member (35).

6. pin grid array package socket as claimed in claim 1 (30) is characterized in that: described cam member by a cam stop device block in location hole.

7. pin grid array package socket as claimed in claim 6 (30) is characterized in that: described cam stop device and slide are one.

8. pin grid array package socket as claimed in claim 1 (30) is characterized in that: described cam member is around a pivoted.

9. pin grid array package socket as claimed in claim 8 (30) is characterized in that: described pivot, its central point are offset the excircle center of described cam member.

10. pin grid array package socket as claimed in claim 1 (30) is characterized in that: described cam member comprises the recess of a ccontaining instrument, and this instrument rotates cam member between the primary importance and the second place.

11. pin grid array package socket as claimed in claim 10 (30) is characterized in that: described cam member recess is hexagonal.