JP2002260777A - Socket for pin grid array package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a socket for a PGA package enabled to carry out a correct slide operation while generating a click sound. SOLUTION: The socket comprises a base housing 20 having a plurality of terminals 21 mounted in a shape of grid array, and a slide plate 40, superposed on the base housing 20, on which, through holes 41 are formed in a shape of grid array corresponding with respective terminals 21. A cam part 61 of a cam member 60, rotation freely held by the base housing 20 is made to penetrate through an opening part 44 formed on the slide plate 40, and a cam face 62 and a rim of opening 45 are made to face each other. Elastically deformable flaps 80a, 80b, 80c are made to face the cam member 60 from side or under, and protrusions 81a, 81b, 81c, formed in radial direction or in the direction toward side or under, are enabled to lock with the cam member 60. A click sound generation mechanism, generating a click sound by deforming the flaps 80a, 80b, 80c, and releasing the elastic deformation afterwards when the cam member turns, is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PGA package socket for connecting a pin grid array (hereinafter, also referred to as "PGA") package.

[0002]

2. Description of the Related Art Conventionally, this type of socket has a base housing in which a plurality of terminals are mounted in a grid array, and a through hole formed in a grid array corresponding to each terminal. A slide plate which is placed in an overlapping manner, wherein the slide plate allows a lead pin of the PGA package to be inserted to a terminal mounting portion with zero insertion force or low insertion force, and the inserted lead pin engages with the terminal. It is configured to slide between the positions to be moved.

The sliding means of the slide plate includes:
A camshaft is provided along the rear edge of the base housing, and the camshaft is rotated by an operation handle provided along the side of the socket to slide the slide plate (for example, Japanese Patent Laid-Open No. -142134). Further, there is a configuration in which a cam member is installed in a direction penetrating the base housing and the slide plate, that is, in a vertical direction, and the cam member is directly rotated by a driver tool such as a hexagonal bar, thereby eliminating the operation handle. It has been proposed.

[0004]

However, since the lead pins of the PGA package connected to the socket for the PGA package are multi-pins of several hundred pins, a relatively large force is required to rotate the cam member. The rotation operation of the cam member when the slide plate is slid is performed slowly.
For this reason, it is difficult to give a mechanical click feeling to the operator in response to the sliding of the slide plate to a predetermined position during the operation, and the slide operation of the slide plate may not be performed properly. was there.

The present invention has been made in view of the above problems, and provides a socket for a PGA package which generates a clear click sound in response to a slide operation of a slide plate so that an appropriate slide operation can be performed. The first purpose is to do so. It is a second object of the present invention to provide a socket for a PGA package having high connection reliability and capable of ensuring proper rotation of the cam member.

[0006]

According to a first aspect of the present invention, there is provided a base housing having a plurality of terminals mounted in a grid array, and a through-hole formed in a grid array corresponding to each terminal. And a slide plate that is placed on top of the
A PGA package socket that slides between a position where the lead pin of the GA package can be inserted into the terminal mounting portion and a position where the inserted lead pin engages with the terminal. The cam portion of the cam member supported by the slide plate penetrates the opening formed in the slide plate, and the cam surface of the cam portion and the opening edge of the opening are opposed to each other to constitute a slide plate slide mechanism. An elastically deformable flap faces the member from the side or below, and a protrusion provided in the cam member in a radial direction or a downward direction, and a tip of the flap can be engaged with the cam member. A click sound generating mechanism configured to release the elastic deformation and generate a click sound after the protrusion elastically deforms the flap during rotation. That PGA is package socket, achieves the first object.

Further, according to the present invention, a base housing having a plurality of terminals mounted in a grid array is provided.
A through hole is formed in a grid array shape corresponding to each terminal, and a slide plate is provided on the upper side of the base housing so that the lead plate of the PGA package can be inserted into the terminal mounting portion. In a PGA package socket in which the inserted lead pin slides between a position where the inserted lead pin engages with the terminal, the cam portion of the cam member rotatably supported by the base housing is mounted on the slide plate. The slide mechanism of the slide plate is formed by penetrating the formed opening, the cam surface of the cam portion and the opening edge of the opening are opposed to each other, and the slide plate is inserted by the cam member. At the time of sliding to the engagement position, the straight edge formed on the opening edge of the opening and the cam surface of the cam portion are formed. A flat surface is adapted to be engaged, and a flap elastically deformable from the side or below faces the cam member, and a projection provided on the cam member in a radial direction or a downward direction; A click sound generating mechanism is configured such that the tip of the flap is engageable, the protrusion elastically deforms the flap when the cam member rotates, and then releases the elastic deformation to generate a click sound. A PGA package socket, which achieves the second object at the same time.

[0008]

In the socket for a PGA package of the present invention constructed as described above, the flap of the click sound generating mechanism is elastically deformed by the projection on the cam member side in accordance with the rotation of the cam member. The engagement is released and the elastic deformation is released. When this elastic deformation is released, a clear sound is generated. This clear click sound enables the slide operation of the slide plate to be performed properly. In addition, the click sound generating mechanism may be further provided with a PGA package having an action of engaging a flat surface of a cam surface provided on the slide mechanism of the slide plate with a straight edge of an opening edge to prevent smooth rotation of the cam member. By adding to the socket, the action of preventing the smooth rotation opposes the kickback force from the terminal, and the cam member does not rotate carelessly, so that a reliable connection can be secured. Further, the click generating mechanism makes it possible to appropriately operate the slide plate by a clear click sound generated by the cam member, and a socket that maintains a highly reliable connection state under a steady slide operation. Can be provided.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 and 2 show a conventional PGA.
1 shows a package socket 10. The PGA package socket 10 includes a substantially rectangular base housing 20 and a substantially rectangular slide plate 40 that is placed on the upper side of the base housing 20. The base housing 20 includes a plurality of terminals 21 shown in FIG.
The tails 22 are mounted in a grid array and extend from the terminals 21 on the bottom surface of the base housing 20. The mounting portion of the terminal 21 is opened on the upper surface so that a lead pin of a PGA package (not shown) is received.

The slide plate 40 is connected to the base housing 20.
Through holes 41 are formed in a grid array shape corresponding to terminals 21 on the side. Side plates 42 each having an L-shaped cross section and hanging on both side edges of the slide plate 40 are engaged so as to hold the guide ridges 23 formed on the side surface of the base housing 20. Are slidable only in the direction along the side edge of FIG.

As shown in FIG. 3, the slide mechanism of the slide plate 40 includes a cam member 60 rotatably installed at one end of the base housing 20 and an ear piece 43 projected from one end of the slide plate 40. The opening 44 is formed. A cam portion 61 of the cam member 60 projects upward through the opening 44, and the cam surface 62 and the opening edge 45 face each other.

The cam member 60 is a columnar member having a structure as shown in FIGS. The outer upper portion constitutes a cam portion 61, and a bearing hole 63 is formed inside the cam portion 61 eccentrically from the bottom surface side. The cam member 60 is rotatable about the support cylinder 24 by covering the support cylinder 24 provided in the base housing 20 with the bearing hole 63. The support cylinder 24 includes a slide plate 40
And extends beyond the upper surface of the slide plate 40 so that the bearing hole 63 can be fitted over the entire length of the support cylinder 24.

A pair of engaging legs 64 are suspended from the bearing hole 63 of the cam member 60 along the central axis. The engagement legs 64 extend beyond the bottom surface of the cam member 60, and each of the engagement legs 64 is formed with an outward hook 65 at the tip. The pair of engaging legs 64 are inserted through the support cylinder 24 so that the hook 65 faces the recess 25 formed in the bottom surface of the base housing 20. And the cam member 60
Is formed.

As shown in FIGS. 4 to 9, the cam member 60 has a cam surface 62 formed on a cam portion 61 and a flat surface 62a. The flat surface 52a is formed at a portion farthest from the center of the bearing hole 63, that is, at a position where the lift amount of the cam surface 62 is maximized. The flat surface 62a is formed over the entire length of the cam portion 61 in the vertical direction. When viewed from the center of the bearing hole 63, the flat surface 62a
An indicator 66 is provided radially from the upper portion of the cam portion 61 in a direction perpendicular to the above. A hexagonal recess 67 is formed on the upper surface of the cam portion 61, that is, on the upper surface of the cam member 60, so that the cam member 60 can be directly rotated by a rotary tool formed of a hexagonal bar.

The opening 44 formed in the lug 43 of the slide plate 40 has a rectangular shape as shown in FIG.
The opening edge 45 is a straight edge 45a facing each other in the front-rear direction,
45b and straight edges 45c facing each other in the left-right direction.
It is composed of two pairs of straight edges of 5d. Slide plate 40
The distance between the straight edges 45a and 45b in the front-rear direction facing each other in the sliding direction is substantially equal to the diameter of the cam portion 61 of the cam member 60. The right and left straight edges 45c and 45d face each other at an interval wider than this interval.

The cam member 6 is provided outside the opening 44.
Stoppers 46a and 46b are provided so as to be able to engage with the indicator 66 provided on the ear piece 43 so as to protrude from the upper surface of the ear piece 43. One stopper 46a is provided outside the corner where the straight edge 45a and the straight edge 45c are continuous, and the other stopper 46b is provided outside the corner where the straight edge 45a and the straight edge 45d are continuous. The indicator 66 extends along the upper surface of the ear piece 43, that is, the upper surface of the slide plate 40, and these stoppers 46a,
46b.

FIG. 1 shows a position where the slide plate 40 can insert the lead pin of the PGA package to the mounting portion of the terminal 21 of the base housing 20 with zero insertion force or low insertion force. In the cam member 60, the indicator 66 is engaged with one of the stoppers 46 a (left side), and the flat surface 62 a formed on the cam surface 62 is the opening edge 45 of the opening 44.
And engages with each other in parallel with the straight edge 45b. In this embodiment, "OPEN" is displayed on the surface of the base housing 20 in the direction in which the indicator 66 extends, so that the position display of the slide plate 40 is more easily understood.

The engagement between the flat surface 62a of the cam surface 62 and the straight edge 45b of the opening edge 45 is achieved by rotating the cam member 60 counterclockwise to the state shown in FIG. At the same time, the mechanical click feeling can be given to the operator, and the engagement of the flat surface 62a and the straight edge 45b causes the cam member 60 to turn counterclockwise in the clockwise direction due to the subsequent vibration or the like. Movement can be prevented. Indicator 66 and stopper 4
The engagement of 6a also prevents the cam member 60 from rotating in the counterclockwise direction.

In this state, the PGA package to be connected is placed on the slide plate 40 with the lead pins facing down. The lead pins are connected to the terminals 2 of the base housing 20 through the through holes 41 of the slide plate 40.
One insertion part can be inserted with zero insertion force or low insertion force.

After the PGA package is mounted, the connection is completed by rotating the cam member 60 in the clockwise direction by 180 degrees. By the rotation of the cam member 60, the slide plate 40 slides in the lower direction of FIG. 1 along the base housing 20 and moves the lead pin inserted through the through hole 41 to a position where it engages with each terminal 21. .

The rotation of the cam member 60 is controlled by an indicator 66.
Stops when it engages with the other (right) stopper 46b. At the same time, the flat surface 62a of the cam surface 62 is engaged in parallel with another linear edge 45a. Therefore, also at the time of this rotation, a mechanical click feeling can be given to the operator when the flat surface 62a and the linear edge 45a engage.

When the lead pin moves to a position where it engages with the terminal 21, the elasticity of the terminal 21 acts as a kickback force on the slide plate 40 through the lead pin. PGA
Since the package has a large number of lead pins of several hundreds and a large number of terminals 21, the kickback force is relatively large. This kickback force causes the cam member 6 to move.
0 may rotate, but the flat surface 62 of the cam surface 62
a and the straight edge 45a of the opening edge 45 are engaged in parallel with each other, so that careless rotation in the counterclockwise direction against the kickback force can be prevented.

Accordingly, the engagement between the lead pin and the terminal 21 is not loosened, and the connection state between the lead pin and the terminal 21 is reliably maintained, so that a highly reliable connection can be secured.

In the rotation operation of the cam member 60 described above, the bearing hole 63 of the cam member 60 and the support cylinder 24 of the base housing 20 are fitted over a relatively long range close to the entire length of the cam member 60. Because of the structure, the cam member 6
0 does not incline, enabling a smooth turning operation. Also, the slide of the slide plate 40 can be reliably slid at a predetermined distance. The retaining structure of the cam member 60 prevents the cam member 60 from falling off the base housing 20 due to the slide resistance of the slide plate 40.

By the way, as described above, the conventional PGA
Since the number of lead pins of the package is as large as several hundred pins, a relatively large force is required to rotate the cam member 60, and the operation must be performed slowly. Therefore, the mechanical click feeling obtained by the engagement between the flat surface 62a of the cam member 60 and the straight edges 45a, 45b may not be clearly recognized by the operator in some cases. The first embodiment described below improves this point.

A PGA package socket 11 of the first embodiment is shown in FIGS. The same reference numerals are assigned to parts configured substantially the same as the conventional example,
Detailed description of those parts will be omitted.

In the PGA package socket 11 of the first embodiment, the flaps 80a and 80b and the projection 81
A click sound generating mechanism composed of a and 81b is provided. That is, the two flaps 80 provided on the base housing 20 with respect to the cam portion 61 of the cam member 60 projecting upward through the opening 44 of the slide plate 40.
a and 80b face symmetrically from both left and right sides. The flaps 80a and 80b have a horizontal L as shown in FIG.
It has a thin plate-like shape with a U-shape. The base side of the short piece is fixed to the base housing 20, the long piece extends toward the cam member 60, and the tip is close to the cam surface 62 of the cam portion 61. It is.

In this embodiment, the flaps 80a, 80
b is formed integrally with the base housing 20,
It may be fixed to the base housing 20 later as a separate member. The material is also the base housing 20
It is not limited to the same insulating plastic as that described above, and it can be formed of a thin metal plate. It is only necessary that the long pieces of the flaps 80a and 80b having a lateral L-shape can be bent by elastic deformation.

On the other hand, a radial direction of the cam portion 61 of the cam member 60 on the peripheral surface of a portion protruding upward beyond the opening 44 of the slide plate 40 so as to be able to engage with the tips of the flaps 80a and 80b. Two projections 81a, 8 facing
1b are provided side by side in the circumferential direction.

The flaps 80a, 80b and the projection 81
The relationship between a and 81b is such that the slide plate 40 is slid to a position where the lead pin of the PGA package can be inserted to the mounting portion of the terminal 21 with zero insertion force or low insertion force by the rotation operation of the cam member 60. At the time and when the inserted lead pin is slid to the position where it engages with the terminal 21 as shown in FIG. 12, an engagement relationship is generated between the flaps 80a or 80b and the projections 81a and 81b, respectively. is there.

Next, the operation of the click sound generating mechanism will be described. When the cam member 60 rotates and the projections 81a and 81b shift to the engagement relationship with the one flap 80a or 80b, one of the two projections 81a and 81b arranged in parallel according to the rotation of the cam member 60. 81a or 81
b engages with the tip of the flap 80a or 80b to elastically deform the flap 80a or 80b to bend. FIGS. 13 and 14 show how the flap 80b is elastically deformed when the slide plate 40 slides from the position shown in FIG. 10 to the position shown in FIG.

The cam member 60 rotates clockwise as indicated by the arrow 90, and the projection 81b first engages with the tip of the flap 80b. When the cam member 60 continues to rotate further, FIG.
As shown in 3, the flap 80b is elastically deformed and bent, and the restoring force is accumulated. When the cam member 60 rotates until the engagement between the projection 81b and the flap 80b is released, the elastic deformation of the flap 80b is released and the flap 80b is restored to its original state, and the tip of the flap 80b strikes the adjacent projection 81a as shown in FIG. become. When the tip of the flap 80b hits the projection 81a, a "click" sound is generated, and this sound can be recognized by the operator as a click sound. That is, a click sound can be given instead of a mechanical click feeling. Moreover, no matter how slow the rotation of the cam member 60 is, a clear clicking sound can be generated, so that the operator can be surely recognized.
Appropriate operation can be ensured.

As is clear from the above description, the protrusion 81
slide plate 40 when disengagement between flap 80b and flap 80b
The engagement relationship between the flap 80b and the projections 81a and 81b is set such that the position of the lead pin is engaged with the terminal 21 through the through hole 41.

When the cam member 60 is rotated in the counterclockwise direction opposite to the arrow 90 to slide the slide plate 40 to the position shown in FIG. 10, a click sound can be generated in the same manner as described above. . In this case, the projection 81a engages with the flap 80a and is bent and then released, and the flap 80a where elastic deformation is restored hits the projection 81b to generate a click sound. The flap 80a and the projection 81 are positioned so that the slide plate 20 is at a position where the lead pin of the PGA package can be inserted to the mounting portion of the terminal 21 with zero insertion force or low insertion force when the engagement between the projection 81a and the flap 80a is released.
The engagement relationship between a and 81b is set.

In the click sound generating mechanism described above, two projections 81a and 81b are provided on the cam member 60 in a line in the circumferential direction. However, as shown in FIG.
However, the click sound generating mechanism can be configured in cooperation with the flap 80c. The manner in which the click sound is generated in this case can be described as follows with reference to FIGS.

That is, when the cam member 60 rotates in the direction of the arrow 91, the projection 81c first engages with the flap 80c to bend (FIG. 16). When the rotation of the cam member 60 is further continued and the engagement between the projection 81c and the flap 80c is released, the elastic deformation of the flap 80c is released, and FIG.
As shown in FIG. 7, it is restored at a time in the direction away from the projection 81c and elastically deforms to the opposite side. Next, the elastic deformation of the opposite side causes the flap 80c to return toward the protrusion 81c as shown in FIG. 18, and hit the back side of the protrusion 81c to generate a click sound.

In the first embodiment shown in FIGS. 10 to 12, the position where the slide plate 40 allows the lead pin of the PGA package to be inserted to the mounting portion of the terminal 21 and the position where the inserted lead pin is associated with the terminal 21 are described. The click sound generating mechanism is configured to generate a click sound when sliding to each of the matching positions. However, it goes without saying that by providing only one of the two flaps 80a and 80b, a click sound can be generated when the slide plate 40 slides to either one of the positions. FIG. 19 shows a second embodiment according to the present invention. In the PGA package socket of the second embodiment, the base housing 2
Flap 8 provided on the surface of
0a, 80b and a projection 81 provided on the cam member in a downward direction.
a and 81b are provided. That is, with respect to the cam portion of the cam member 60 protruding upward through the opening 44 of the slide plate 40,
Two flaps 80a provided on the base housing 20,
80b is symmetrically projected so as to project upward from below the cam member 60. The flaps 80a and 80b are formed by cutting the surface of the resin base housing 20 into a shape as shown in the figure. Flap 80
Since a and 80b are made of resin, they have elasticity, and generate a force to deform vertically. Also, flaps 80a,
The tip of 80b has a U-shape, and its tip is upward. On the other hand, projections 81a and 81b are provided on the lower outer peripheral edge of the cam member. It can be bent by deformation. With such a configuration, the two protrusions 81a, 81a of the cam member 60 are formed.
b and the flaps 80a and 80b are engaged, and the flap 8
The click sounds can be generated by elastically deforming and bending the Oa and 80b and hitting the projections 81a and 81b by further opening them.

Further, the flaps 80a and 80b and the projections 8 are different from those of the conventional PGA package socket 10.
A click sound generating mechanism constituted by 1a and 81b may be provided. Cam member 6 against kickback force
The socket which can secure a reliable connection by preventing the rotation of the cam member 60 carelessly, and which can generate a clear click sound when rotating the cam member 60 to secure an appropriate rotation operation. Can be configured.

[0040]

As described above, according to the first to third aspects of the present invention, after the flap is elastically deformed by the projection provided on the cam member, this elastic deformation is released to generate a click sound. Since the sound generating mechanism is provided, a clear clicking sound can be generated even when the cam member is rotated slowly. As a result, the operator can surely recognize the click sound, and it is possible to provide a socket capable of ensuring a proper rotation operation of the cam member.

Further, according to the inventions of claims 4 to 7, it is possible to provide a socket which has a high connection reliability and can ensure a proper rotation operation of the cam member.

[Brief description of the drawings]

FIG. 1 is a plan view of a conventional PGA package socket.

FIG. 2 is a longitudinal sectional view of a conventional PGA package socket.

FIG. 3 is an enlarged sectional view of a cam member mounting portion of a conventional PGA package socket.

FIG. 4 is a front view of a cam member.

FIG. 5 is a bottom view of the cam member.

FIG. 6 is a plan view of a cam member.

FIG. 7 is a side view of the cam member.

FIG. 8 is a rear view of the cam member.

FIG. 9 is a sectional view taken along line AA of FIG. 4;

FIG. 10 is a plan view of the PGA package socket according to the first embodiment of the present invention, showing a state where the slide plate has been slid to a position where a lead pin can be inserted into a terminal mounting portion.

FIG. 11 is a rear view of the PGA package socket of the first embodiment.

FIG. 12 is a plan view similar to FIG. 10, but showing a state in which a lead pin into which a slide plate has been inserted has been slid to a position where it engages with a terminal.

FIG. 13 is a view for explaining the operation of the click sound generating mechanism provided in the first embodiment, in a state where the projection elastically deforms the flap.

FIG. 14 is a view for explaining the operation of the click sound generating mechanism, when the elastic deformation of the flap is released.

FIG. 15 is an explanatory diagram of another embodiment of the click sound generating mechanism.

FIG. 16 is a view for explaining the operation of another embodiment of the click sound generating mechanism, and is a view showing a state in which the projection elastically deforms the flap.

FIG. 17 is a view for explaining the operation of another embodiment.
It is a figure at the time of elastic deformation of a flap being released.

FIG. 18 is a view for explaining the operation of another embodiment.
It is a figure at the time of the flap in which elastic deformation was released hitting a protrusion.

FIG. 19 is a perspective view of a PGA package socket according to a second embodiment of the present invention.

[Explanation of symbols]

 10, 11 PGA package socket 20 Base housing 21 Terminal 24 Support cylinder 25 Recess 40 Slide plate 41 Through hole 44 Opening 45 Opening edge 45a, 45b Straight edge 46a, 46b Stopper 60 Cam member 61 Cam portion 62 Cam surface 62a Flat surface 63 Bearing hole 64 Engagement leg 66 Indicator 80a, 80b, 80c Flap 81a, 81b, 81c Projection

Claims (7)

[Claims] A base housing on which a plurality of terminals are mounted in a grid array;
1 is formed in the form of a grid array corresponding to each terminal 21, and includes a slide plate 40 laid on the upper side of the base housing 20, and the slide plate 40 connects a lead pin of the pin grid array package to the terminal 21. In the pin grid array package socket 10, which is configured to slide between a position where the inserted lead pin can be inserted and a position where the inserted lead pin engages with the terminal 21, the socket is rotatably supported by the base housing 20. The cam portion 61 of the cam member 60 passes through the opening 44 formed in the slide plate 40, and the cam surface 62 of the cam portion 61 and the opening 44
A sliding mechanism for the slide plate 40 is configured with the opening edges 45 of the cam members 60 facing each other, and flaps 80a, 80b, and 80c that can be elastically deformed from the side or below of the cam member 60 are exposed. A projection 81a, 81b, 81c provided on the member 60 in a radial direction or a downward direction, and the flaps 80a, 80
b, 80c can be engaged with the cam member 60.
The click sound generating mechanism is configured to generate a click sound by releasing the elastic deformation after the protrusions 81a, 81b, 81c elastically deform the flaps 80a, 80b, 80c at the time of rotation. Socket for pin grid array package. 2. The click sound includes a position at which the slide plate 40 allows a lead pin to be inserted into a mounting portion of the terminal 21;
The socket for a pin grid array package according to claim 1, wherein the socket is generated when the inserted lead pin slides to at least one of positions engaged with the terminal 21. 3. The pin grid array according to claim 1, wherein the projections 81a, 81b, 81c provided on the cam member 60 in the radial direction or the downward direction are one or two projections arranged in the circumferential direction. Socket for package. 4. A base housing 20 in which a plurality of terminals 21 are mounted in a grid array,
1 is formed in the form of a grid array corresponding to each terminal 21, and includes a slide plate 40 which is disposed so as to overlap the upper side of the base housing 20. The slide plate 40 connects the lead pins of the pin grid array package to the terminals 21. In the pin grid array package socket 10, which is configured to slide between a position where the inserted lead pin can be inserted and a position where the inserted lead pin engages with the terminal 21, the socket is rotatably supported by the base housing 20. The cam portion 61 of the cam member 60 passes through the opening 44 formed in the slide plate 40, and the cam surface 62 of the cam portion 61 and the opening 44
When the sliding mechanism of the slide plate 40 is configured with the opening edges 45 of the slide plate 40 facing each other, and the slide plate 40 is slid by the cam member 60 to a position where the inserted lead pin engages with the terminal 21, A straight edge 45a formed on an opening edge 45 of the opening 44 and a flat surface 62a formed on a cam surface 62 of the cam portion 61 are engaged with each other. Alternatively, flaps 80a, 80b, and 80c that are elastically deformable from below are exposed, and projections 81a, 81b, and 81c provided on the cam member 60 in a radial direction or a downward direction, and the flap 80
a, 80b, and 80c can be engaged with the protrusions 81a, 81b, and 81c when the cam member 60 rotates.
A click-grid generating mechanism for generating a click sound by elastically deforming the flaps 80a, 80b, and 80c and then releasing the elastic deformation to constitute a pin grid array package socket. 5. The cam member 60 is connected to the base housing 20.
The bearing hole 63 of the cam member 60 is
And is rotatably supported with a bearing hole 6
5. The pin grid according to claim 4, wherein the engaging legs 64 hanging down along the central axis of the third member are engaged with the concave portions 25 formed in the bottom surface of the base housing 20 to form a retaining structure for the cam member 60. 6. Socket for array package. 6. The click sound includes: a position at which the slide plate 40 allows a lead pin to be inserted into a mounting portion of the terminal 21;
The socket for a pin grid array package according to claim 4 or 5, wherein the socket is generated when the inserted lead pin slides to at least one of the positions where it engages with the terminal (21). 7. The projection 81a, 81b, 81c provided on the cam member 60 in a radial direction or a downward direction is one or two projections arranged in a circumferential direction. The socket for the described pin grid array package.