JPH1041037A - Ic socket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an IC socket which makes attachment and detachment of an IC chip easy. SOLUTION: An L-shaped pressing member 19 is constituted so as to be rotated following the up and down movement of a cover member 11 and a lead 25 of an IC chip 24 is pinched between the pressing member 19 and a contact pin 17. Furthermore, the pressing member 19 is so constituted as to rotate itself on the pin 21. Consequently, the pressing member 19 is rotated about the operation pin 20 in a first stage and further rotated about the pin 21 in a second stage. In this way, the pressing member 19 is parted to be remote from an IC mounting stand 16, the pressing member 19 does not cause hindrance at the time of attaching and detaching the IC chip 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC socket used for mounting an IC or testing electrical characteristics, and more particularly, to a terminal in which upper surfaces of contact pins are arranged in a row on the lower surface of an IC package. Also, the present invention relates to an IC socket of a type that contacts a lower surface of a lead terminal of an IC package.

[0002]

2. Description of the Related Art Normally, only manufactured ICs that have passed a test of whether or not they have desired electrical characteristics are put to practical use. When testing this IC, the so-called IC
Sockets are used.

Various IC sockets have been proposed so far. As an example, FIGS. 15 to 19 show an IC socket described in Japanese Utility Model Laid-Open No. 7-29783. As shown in FIG. 15, this IC socket includes a rectangular socket body 1 and a plurality of contact pins 2 arranged at regular intervals on each side of the socket body 1. A positioning guide 1b located inside a row of contact pins 2 at a corner of the main body 1, a guide hole 1c formed at a position where each row of contact pins 2 substantially intersects, a contact hole adjacent to the guide hole 1c, A square hole 1d formed on an extension of the row of pins 2 is provided.

[0004] As shown in FIG.
Has a shape of a horizontal U-shape, and a contact portion 2 protruding upward is provided at the tip of the lower side of the horizontal “U”.
b is formed, and a connection portion 2 is formed from the base of the letter “U”.
d extends outward, and a sliding portion 2f protruding downward is formed at the tip of the upper side of the horizontal “U”.

An elongated slider 3 having a substantially horizontal U-shaped cross section is slidably inserted into a horizontal U-shaped space formed by the rows of the contact pins 2. Pins 4 are provided at both ends of the slider 3 so as to be located above the square hole 1d. An upper groove 3d is formed above an intermediate portion of the slider 3, and a lower groove 3e is formed below the slider. The upper groove 3d is composed of a plurality of ribs 3c, and the upper side of the contact pin 2 is loosely fitted in the upper groove 3d. On the other hand, the lower side of the contact pin 2 is loosely fitted in the lower groove 3e. Both the upper groove 3d and the lower groove 3e are formed at the same pitch as the contact pins 2.

Further, a pressing portion 3b is formed at the upper end of the portion facing the center of the socket body 1 so as to protrude, and is placed on the contact portion 2b of the contact pin 2 substantially below the pressing portion 3b. A contact portion 3a that contacts the side surface of the IC chip 5 is formed.

When mounting the IC chip 5 on the socket body 1, a jig 6 as shown in FIG. 18 is used.
The jig 6 has a guide column 6a inserted into the guide hole 1c.
And a leg 6c inserted into the square hole 1d, and the tip of the leg 6c forms an inward tapered portion 6b.

On the other hand, when removing the IC chip 5,
A jig 7 as shown in FIG. 19 is used. The jig 7 has a guide post 7a inserted into the guide hole 1c, and a leg 7c inserted into the square hole 1d. The tip of the leg 7c forms an outward tapered portion 7b. I have.

The IC socket having the above configuration is used as follows. First, insert the jig 7,
With the slider 3 moved outward, the IC chip 5
Is inserted along the guide 1b such that the electrode portion 5a of the IC chip 5 is placed on the contact portion 2b of the contact pin 2. Next, by inserting the jig 6 and moving the slider 3 inward, the IC chip 5 is sandwiched between the contact portion 2b and the pressing portion 3b of the slider 3, and the contact portion 2b
And the electrode portion 5a come into sufficient contact.

When the IC chip 5 is removed,
First, the pressing state of the IC chip 5 is released by inserting the jig 7 and moving the slider 3 to the outside.
The chip 5 is taken out.

[0011]

However, the above-mentioned conventional IC socket requires jigs 6 and 7 for mounting and removing the IC chip. As described above, the necessity of a jig other than the IC socket results in complicating the manufacturing process and the usability.

Further, since the slider 3 is elongated, it is easy to bend at the center. For this reason, the pressing portion 3b of the slider 3 does not act sufficiently at the center of the row of the contact pins 2, and the contact between the IC chip 5 and the contact portion of the contact pin 2 may be insufficient.

Further, in the above-mentioned conventional IC socket, since the pressing portion 3b of the slider 3 is placed on the upper surface of the IC chip 5, the contact between the IC chip 5 and the contact pin 2 is intended. If the movement of the slider 3 to the outside is not enough, the slider 3
The removal of the chip 5 may be hindered.

The present invention has been made in view of such a problem of the conventional IC socket, and can mount and take out an IC chip without requiring a special jig. , So that mounting and taking out of an IC is not hindered by any member of the IC socket.
It is intended to provide a C socket.

[0015]

In order to achieve this object, an IC socket according to the present invention comprises a socket body having a rectangular IC mounting base in the center, and an IC socket which is vertically movable with respect to the socket body. A cover member attached to the socket body, and a plurality of horizontal U-shaped contact pins attached at regular intervals to two opposing sides of the socket body, and a lower surface of an IC chip placed on the IC mounting table. In an IC socket in which the lower surfaces of the arranged terminals or the leads of the IC chip are in contact with the upper surfaces of the respective contact pins, the IC socket is pivotally supported by the socket main body, and the distal end thereof is slidable with the cover member. A link member having an operating pin engaged with the link member, the link member being pivotally supported by the link member concentrically with the operating pin, and extending upward and having a distal end formed by the cover member. A pressing member having a first protruding portion slidably in contact with the working portion and a second protruding portion extending inward in the horizontal direction and capable of pressing the edge of the IC or the lead of the IC placed on the IC mounting table from above; And an arm formed on at least one contact pin of the plurality of contact pins provided on each of the sides to resiliently press the second protrusion downward. In the first half, the pressing member is rotated by the cover member such that the second protruding portion is removed outward from the position for pressing the edge of the IC or the lead of the IC against the elastic pressure of the arm. ,
In the latter half of the pressing process of the cover member, the link member is rotated outward by the cover member so that the entire pressing member moves outward.

According to the present invention, the operating pin is
A slidable slot formed by a first portion formed in the cover member and extending in a vertical direction, and a second portion extending above the first portion and extending outward from the cover member continuously with the first portion. It is fitted in. In this case, the first part is preferably open at the lower end.

Further, according to the present invention, the operating pin is formed of a pin formed integrally with the pressing member and rotatably inserted through the link member, or integrally formed with the link member. And the pressing member is pivotally mounted on the link member concentrically with the operating pin.

[0018]

1 to 3 show an IC according to the present invention.
1 illustrates one embodiment of a socket. As shown in FIG. 1, the IC socket according to the present embodiment includes a socket body 10 having a rectangular planar shape, and a cover member 11 attached to the socket body 10 so as to be vertically movable with respect to the socket body 10. It has.

A coil spring 12 is disposed between the socket body 10 and the cover member 11, and the cover member 11 is constantly urged upward. Does not move down with respect to the socket body 10. In addition, an inward claw 14 is formed at the lower end of the pillar portion 13 extending downward from the cover member 11, and the claw 14 is a beam 1 formed on the socket body 10.
5 to be engaged. The upward movement of the cover member 11 with respect to the socket body 10 is restricted by the engagement between the claws 14 and the beam portions 15.

As shown in FIG. 2, a rectangular floating plate 16 as an IC mounting table is disposed at the center of the socket body 10. Floating plate 16
Is mounted on the socket body 10 via a spring 16b, and the floating plate 16 is configured to slightly move up and down in accordance with the up and down movement of the cover member 11. As described later, the floating plate 16
An IC chip to be tested is placed thereon. The floating plate 16 has a number of slits 1 along two opposing sides (ie, in a direction perpendicular to the plane of FIG. 2).
6a are provided at equal intervals, and the contact pins are arranged so that the contact portions of the contact pins are located in the slits 16a as described later.

As shown in FIGS. 2 and 3, the floating plate 1 is
6 (ie, in a direction perpendicular to the plane of FIG. 2), two types of plural contact pins 17, 1
8 are arranged at regular intervals.

FIG. 4 and FIG.
Shown in As shown in FIG. 4, the contact pin 17 includes a resilient portion 17 a having a horizontal U-shape, a contact portion 17 b protruding upward from an upper end of a horizontal “U”, and a horizontal “U”. And a connection terminal portion 17c protruding downward from a position near the center of the lower side. As shown in FIG. 5, the contact pin 18 has an arm 18d extending from the base end of the upper side of the letter "U" in the horizontal direction in addition to the configuration of the contact pin 17. This arm 18
d is a linear portion 18e extending upward from the upper side of the horizontal “U” character, an arc portion 18f having an arc shape, a linear portion 18g extending linearly toward the contact portion 18a,
Contact portion 1 protruding downward at the tip of the straight portion 18g
8h.

As shown in FIG. 2, each contact pin 1
The connection terminals 7 and 18 are fixed by press-fitting the connection terminal portions 17c and 18c into through holes (not shown) provided in the socket body 10. Each contact pin 17, 18
Are fixed to the socket body 10 so that the contact portions 17b and 18b of the contact pins 17 and 18 enter the slit 16a of the floating plate 16 from below. As will be described later, the lower surfaces of the leads of the IC chip mounted on the floating plate 16 contact the upper surfaces of the contact portions 17b, 18b of the contact pins 17, 18, respectively.

As shown in FIG. 3, the contact pins 17,
Numerals 18 are arranged alternately in blocks, and in this embodiment, three contact pins 18, five contact pins 17, four contact pins 18, five contact pins 17, and three contact pins The contact pins 18 are arranged in this order.

The contact pins 17 and 18 are made of a conductive thin metal such as beryllium copper. Each contact pin 17, 18 has a certain degree of elasticity against a pressing force from above due to the shape of the elastic portion 17a, 18a, which is substantially U-shaped.

The socket body 10 is provided with a pressing member 19 for applying a pressing force to the leads of the IC chip placed on the floating plate 16 from above.
As shown in FIG. 2, the pressing member 19 has a substantially L-shaped cross section, and the first protruding portion 19a extending upward.
And a second protrusion 19b extending inward in the lateral direction.
As shown in FIG. 3, the second projecting portion 19b of the pressing member 19 has a substantially plate shape, and the first projecting portion 19a is formed at two places symmetrically about the center of the second projecting portion 19b. I have.

That is, as shown in FIG. 3, the first projecting portion 19a projects upward from two regions where the five contact pins 17 on which the arms 18d are not formed are arranged. In the region where the portion 19a is not formed, the contact pins 18 on which the arms 18d are formed are arranged. As shown in FIG. 2, the arm 18d of the contact pin 18 is in contact with the vicinity of the tip of the second protrusion 19b of the pressing member 19, and applies a downward pressing force, that is, the pressing member 19 to the second protrusion 19b. Elastic pressure is applied to rotate in the direction B.

The pressing member 19 rotates at both ends in both two directions A and B around an operating pin 20 located at a position where the first projection 19a and the second projection 19b intersect. It is possible. Operating pin 2
Reference numeral 0 is slidably engaged with a slot of the cover member 11 described later.

As shown in FIG. 2, the first projection 19a of the pressing member 19 is
And is in contact with an operation portion 11 a formed on the cover member 11. The operation unit 11a has a tapered shape. Therefore, when the cover member 11 moves downward, the first projecting portion 19a is pressed by the tapered shape of the operation portion 11a, and the pressing member 19 rotates in the A direction. On the other hand, when the cover member 11 moves upward, the regulation by the operation portion 11a is released, so that the pressing member 19 rotates in the B direction by receiving the urging force of the arm 18d of the contact pin 18.

Further, as shown in FIG.
Of the second projecting portion 19b of the floating plate 1
6 and thus substantially vertically face the contact portions 17b and 18b of the contact pins 17 and 18, respectively.

The present IC socket includes a pressing member rotating means for rotating the entire pressing member 19 about a certain point. The pressing member rotating means includes a second rotating shaft 21.
And a link member 22 and a slot 23 formed in the cover member 11.

As shown in FIG. 6, a pin 21 as a second rotating shaft is fixedly attached to the socket body 10. The link member 22 has an opening through which the operation pin 20 and the pin 21 are inserted.
The pressing member 19 and the link member 22 are connected to each other by rotatably inserting the pin 0 and the pin 21 into the openings.

As shown in FIG. 1, a slot 23 is formed on the outer wall of the cover member 11. Slot 23 is
It comprises a first portion 23a extending in the vertical direction, and a linear second portion 23b formed continuously above the first portion 23a and extending toward the outside of the cover member 11. The operating pin 20 is thus configured so that the operating pin 20 and thus the pressing member 19 can rotate about the pin 21 in the A and B directions.

The operating pin 20 and the pressing member 19 may be formed separately, and then the operating pin 20 may be attached to the pressing member 19, or the operating pin 20 and the pressing member 19 may be integrated from the beginning. May be formed.

The present IC socket having the above configuration operates as follows. As shown in FIG. 7A, in a normal state, the pressing member 19 and the link member 22 are
It is in the position shown. Therefore, the second protrusion 19 b of the pressing member 19 is connected to the slit 16 of the floating plate 16.
a of the contact portions 17b and 18b of the respective contact pins 17 and 18 which enter the inside of the slit 16a from below the position a.

Further, as shown in FIG. 7B, the operating pin 20 is connected to the first portion 23 of the slot 23 of the cover member 11.
a is located at the lowermost end.

Next, when the cover member 11 is pushed downward from above, the cover member 11 moves downward with respect to the socket body 10. Accordingly, as shown in FIG. 8B, the slot 23 of the cover member 11 slides along the operation pin 20, and the operation pin 20 is moved to the upper end of the first portion 23a, that is, the first portion 23a and the second portion 23b. To the junction.

On the other hand, with the downward movement of the cover member 11, the operating portion 11a of the cover member 11 applies a pressing force to the first projecting portion 19a of the pressing member 19. For this reason, FIG.
As shown in (1), the pressing member 19 rotates in the direction A around the operating pin 20 against the pressing force of the arm 18d of the contact pin 18. The rotation of the pressing member 19 in the A direction continues until the operating pin 20 reaches the upper end from the lower end of the first portion 23a of the slot 23, and when the operating pin 20 reaches the upper end of the first portion 23a, the A of the pressing member 19 is increased. The rotation in the direction stops.

The operating pin 20 is connected to the first part 2 of the slot 23.
During the transition from the lower end to the upper end of 3a, since the relative positional relationship between the operating pin 20 and the pin 21 does not change, the link member 22 remains stationary. That is, when the rotation of the pressing member 19 in the direction A is stopped, the link member 22 has not yet started to rotate, and FIG.
It is in the position shown.

When the cover member 11 is further pushed downward, the cover member 11 is further moved downward with respect to the socket body 10, and the slot 23 is further slid along the operation pin 20, as shown in FIG. The operation pin 20 moves from the first portion 23a to the second portion 23b, and finally reaches the upper end of the second portion 23b.

The operating pin 20 is connected to the second part 2 of the slot 23.
With the movement along 3b, the operating pin 20 gradually moves toward the outside of the socket body 10.
As a result, the relative positional relationship between the operating pin 20 and the pin 21 changes, and as the operating pin 20 moves along the second portion 23b, as shown in FIG. The rotation itself starts around the pin 21 in the direction A. The rotation of the operation pin 20 in the direction A is performed by the operation pin 2.
0 continues along the second portion 23b and ends when the operating pin 20 reaches the upper end of the second portion 23b.

As described above, when the cover member 11 is pushed in downward, the pressing member 19 first rotates in the direction A about the operating pin 20, and then the operating pin 20 and finally the pressing member 19 rotates about the pin 21. It turns in the A direction.
Thus, the pressing member 19 is connected to the floating plate 16.
Away from the space above the slit 16a,
Above a is a completely open space.

Thereafter, the IC chip 24 (shown by a broken line) is placed on the floating plate 16 as shown in FIG. At this time, the lead 25 protruding from the IC chip 24 is located on the slit 16a of the floating plate 16.
Therefore, the lower surface of each lead 25 makes light contact with the upper surfaces of the contact portions 17b, 18b of the contact pins 17, 18, which enter the inside of the slit 16a from below the slit 16a.

After the IC chip 24 is placed on the floating plate 16 and the force pressing the cover member 11 downward is gradually reduced, the operating pin 20 is accordingly moved from the upper end to the lower end of the second portion 23b of the slot 23. Transition towards. That is, the state shifts from the state of FIG. 9 to the state of FIG. Accordingly, the operating pin 20 starts rotating in the direction B around the pin 21 because the pressing member 19 is pressed by the arm 18d of the contact pin 18, and the operating pin 20 reaches the lower end of the second portion 23b. At this point, the rotation ends. During this time, the rotation of the pressing member 19 about the operation pin 20 is not performed.

Further, as the operating pin 20 moves from the second portion 23b to the first portion 23a and moves inside the first portion 23a, that is, as the operating pin 20 moves from the state of FIG. 8 to the state of FIG. The pressing member 19 starts rotating around the operation pin 20 in the B direction. The rotation of the pressing member 19 in the direction B about the operation pin 20 is performed by the operation pin 2.
The process ends when 0 reaches the lower end of the first portion 23a of the slot 23.

At this point, the second projection 19b of the pressing member 19 is located on the slit 16a of the floating plate 16, as shown in FIG. Therefore, the lead 25 of the IC chip 24 placed on the floating plate 16 is sandwiched between the upper pressing member 19 and the contact portions 17b, 18b of the lower contact pins 17, 18 on the slit 16a. Become.
The pressing member 19 is urged in the B direction by the elastic force of the arm 18d of the contact pin 18, and each contact pin 17, 18 applies an upward force to the lead 25 by the elastic force exerted by the elastic portions 17a, 18a. Therefore, the lead 25 of the IC chip 24 is
b and contact portions 17b, 18 of the respective contact pins 17, 18
b is sandwiched with a sufficient force.

As described above, after the IC chip 24 is mounted on the present IC socket, predetermined electric power is applied to the IC chip 2 via the connection terminals 17c and 18c of the contact pins 17 and 18.
4 to check whether the IC chip 24 has the desired electrical characteristics.

After the inspection, the operation of pushing the cover member 11 downward is repeated, so that the IC chip 24 can be taken out, and further the next IC chip can be loaded on the floating plate 16.

As described above, according to the IC socket according to the present embodiment, it is not necessary to use an auxiliary jig other than the IC socket, and only by repeating the up and down movement of the cover member 11, the IC chip can be mounted. Mounting and unloading are possible.

Further, the pressing member 19 is first connected to the operating pin 2.
Rotating about 0, the operating pin 20 itself rotates about the pin 21. That is, the pressing member 1
9 rotates in two stages, so that the pressing member 19 can be sufficiently separated from the floating plate 16 when mounting the IC on the floating plate 16 or when removing the IC from the floating plate 16. The pressing member 19 does not become an obstacle.

In the above embodiment, the pressing member 19
Of the IC chip 24 between the second protruding portion 19b of the IC chip 24 and the contact portions 17b, 18b of the contact pins 17, 18.
5, the IC chip 24 itself may be inserted instead of the lead 25, as shown in FIG. This configuration is I
It can be suitably used for a type in which electrode terminals are provided on the lower surface of the C chip 24.

In the above embodiment, the pressing member 19
Although the first projecting portion 19a is provided above the contact pin 17 where the arm 18d is not formed, the first projecting portion 19a can be formed as shown in FIG. That is, in the modification shown in FIG. 11, the contact pins 18 in which the arms 18d are all formed are used as the contact pins. The intervals between these contact pins 18 are relatively large, the contact pins 18 are arranged, and the first projection 19a of the pressing member 19 is projected from the gap between the contact pins 18. Therefore, the number of the first protruding portions 19 a is smaller by one than the number of the contact pins 18.

As described above, by projecting the first projecting portions 19a from the gaps between the contact pins, all the contact pins can be the contact pins 18 on which the arms 18d are formed.

Slot 23 formed in cover member 11
Is not limited to the shape shown in FIG. For example,
As shown in FIG. 12, the first portion 23a of the slot 23 can be extended to the lower end of the cover member 11. By starting the slot 23 from the lower end of the cover member 11 in this manner, the slot can be formed more easily than the slot 23 having a closed shape inside the cover member 11 as shown in FIG. Can be done,
Assembling of the cover member 11 to the socket body 10 can be facilitated.

Further, the second portion 23b of the slot 23
Is a curved shape instead of the linear shape shown in FIG.
For example, it may be formed in an arc shape.

The pin 2 constituting the pressing member rotating means
1. The shapes of the link member 22 and the slot 23 and the positional relationship between them are not limited to those described in the above embodiment. Other shapes and positional relationships can be selected. An example is shown in FIGS.

In the modification shown in FIG. 13, the operating pin 20 is formed integrally with the link member 22, and the end of the pressing member 19 is rotatably fitted to the link member 22 concentrically with the operating pin 20. It has been combined. According to this modification, as in the configuration shown in FIG. 6, the pressing member 19 and the link member 22 can be attached to the socket body 10 very easily.

In the modification shown in FIG. 14, the lower part of the link member 22 is inserted into a groove 10a formed in the socket body 10, and the pin 21 is pressed into the socket body 10 to press the link member 22. It is different from the modification of FIG. 13 in that it pivots. In this modification, the socket body 10 of the pressing member 19 and the link member 22 is also provided.
Easy to assemble.

[0059]

As described above, according to the present invention, the loading and unloading of the IC chip can be performed simply and reliably only by pressing the cover member without using a special jig or the like. In addition, an IC socket having a relatively simple configuration and easy assembling, in which a contact member can be reliably brought into contact with a terminal or a lead of an IC chip by a pressing member by using an elastic pressure of the contact pin. be able to.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of an IC socket according to the present invention.

FIG. 2 is a front view showing the internal structure of the IC socket shown in FIG.

FIG. 3 is a plan view showing only half of the present IC socket as viewed from above, and shows a positional relationship between a pressing member and a contact pin.

FIG. 4 is a front view of a contact pin on which an arm is not formed.

FIG. 5 is a front view of a contact pin on which an arm is formed.

FIG. 6 is a sectional view showing the structure of the pressing member rotating means.

7A is a front view showing the internal structure of the present IC socket, and FIG. 7B is a front view showing the outer shape of the present IC socket, in a state before the pressing of the cover member is started.

8A is a front view showing the internal structure of the present IC socket, and FIG. 8B is a front view showing the outer shape of the present IC socket, each of which is in the middle of the pressing operation of the cover member.

9A is a front view showing the internal structure of the present IC socket, and FIG. 9B is a front view showing the outer shape of the present IC socket, each in a state at the time when the pressing operation of the cover member is completed.

FIG. 10 is a front view similar to FIG. 7A, showing an example of use in a case where an IC chip of a type in which electrode terminals are arranged in a row on the lower surface is mounted on the present IC socket.

FIG. 11 is a plan view showing another example of the arrangement of the first protrusions of the pressing member and the contact pins, as viewed from above.

FIG. 12 is a front view showing another example of the slot formed in the cover member.

FIG. 13 is a sectional view showing another example of the structure of the pressing member rotating means.

FIG. 14 is a sectional view showing still another example of the structure of the pressing member rotating means.

FIG. 15 is a plan view of a socket body as an example of a conventional IC socket.

16 is a front view (a) and a side view (b) of a slider used in the IC socket shown in FIG.

FIG. 17 is a sectional view showing the operation of the IC socket shown in FIG.

18 is a sectional view of a jig used for mounting an IC in the IC socket shown in FIG.

19 is a sectional view of a jig used for taking out an IC in the IC socket shown in FIG.

[Explanation of symbols]

 Reference Signs List 1 socket body of conventional IC socket 2 contact pin 3 slider 4 pin 5 IC 6 jig for mounting IC chip 7 jig for removing IC chip 10 socket body 11 cover member 16 floating plate 16a slit 17 arm is formed No contact pin 18 Contact pin with arm 18a Arm 19 Pressing member 19a First protruding portion 19b Second protruding portion 20 Working pin 21 Pin 22 Link member 23 Slot 24 IC chip 25 Lead

Claims (5)

[Claims] A socket body having a rectangular IC mounting table in the center; a cover member attached to the socket body so as to be vertically movable with respect to the socket body;
A plurality of laterally U-shaped contact pins attached at regular intervals to two opposite sides of the socket body,
An IC socket in which terminals arranged on the lower surface of an IC chip placed on the IC mounting table or lower surfaces of leads of the IC chip are in contact with upper surfaces of respective contact pins, respectively. A link member that is supported and has an operating pin at its distal end slidably engaging the cover member;
A first protruding portion which is pivotally supported by the link member concentrically with the operating pin, extends upward and has a tip slidably in contact with an operating portion of the cover member, and extends inward in the lateral direction and is mounted on the IC mounting table; A pressing member having a second protruding portion capable of pressing the edge of the IC or the lead of the IC from above; and a pressing member formed on at least one of the plurality of contact pins provided on each side. An arm that resiliently presses the second protruding portion downward, wherein the second protruding portion opposes the resilient force of the arm in the first half of the pressing stroke of the cover member, and the second protruding portion is an edge of the IC or a lead of the IC So that the pressing member is rotated by the cover member so that the pressing member is moved outward in the second half of the pressing process of the cover member. The link member is IC socket, characterized in that adapted to be caused to pivot outwardly by members. A second portion extending in the vertical direction and being formed in the cover member, and a second portion extending above the first portion and extending outward from the cover member, the second portion being continuous with the first portion. 2. The IC socket according to claim 1, wherein the IC socket is slidably fitted in a slot including a portion. 3. The IC socket according to claim 2, wherein a lower end of the first portion of the slot is open. 4. The IC socket according to claim 1, wherein the actuating pin comprises a pin formed integrally with the pressing member and rotatably inserted through the link member. . 5. The apparatus according to claim 1, wherein the operating pin is formed integrally with the link member, and the pressing member is pivotally attached to the link member concentrically with the operating pin. The described IC socket.