JPH10308269A - Ic socket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mount different sizes of ICs on a IC socket even after the IC socket is packaged on a wiring board. SOLUTION: An IC socket is formed with a mainbody 1 and a socket upper part 5. The socket upper part 5 consists of two right and left socket pieces 5a, 5b to be electrically connected to the mainbody 1 in a disconnectable manner. The mainbody 1 is provided with three types of terminals corresponding to a space between mutually opposed terminals of the IC socket to be electrically connected to the socket pieces 5a, 5b so that three sizes of ICs can be mounted on the IC socket.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC socket, and more particularly to an IC socket which is mounted on a measuring jig or the like and is used where ICs need to be frequently replaced, such as IC inspection and system evaluation.

[0002]

2. Description of the Related Art In an IC socket, an IC can be fixed to the socket, the IC can be easily replaced, and the electrical characteristics of the IC can be transmitted to a jig or the like through the IC socket.

[0003] IC sockets are classified according to the package size and the number of terminals of each IC.

FIG. 5 is a perspective view of a conventional IC socket, and FIGS.

[0005] As shown in FIG. 6, the socket terminal 112 is of an integral type, and as shown in FIG.
The IC terminal 3 is placed so that the IC terminal 3 and the socket terminal 112 are in contact with each other, and the IC terminal 2 is pressed downward, whereby the socket terminal 112 is bent, and the repulsive force fixes the IC 2 to the socket main body 111.

However, this IC socket can be used only for ICs of the same size, and when ICs of different sizes are used, there is a disadvantage that the IC socket must be replaced with an IC socket that matches the size of the IC. .

[0007] In order to solve such a drawback, Japanese Utility Model Application Laid-Open No. Sho 62-109380 discloses an IC socket in which the distance between opposing pins of the IC socket is variable.

FIGS. 8 and 9 are perspective views showing the configuration of the IC socket disclosed in this publication, and FIG. 10 is an external view of the IC.

In the IC socket disclosed in the official gazette, as shown in the perspective views of FIGS.
1, 102), and a locking portion is provided to fit each other so as to be able to expand and contract.

[0010] When measuring the device 103 shown in the perspective view of FIG.
By adjusting 102 and mounting the IC sockets 101 and 102 on a measuring jig, the electrical characteristics of the device 103 can be measured.

[0011]

However, according to the technology described in the gazette, by preparing this kind of IC socket,
The same package and the same number of pins can be used, but once mounted, the variable width characteristic of the IC socket described in the official gazette cannot be effectively used. That is, in the case of using this IC socket, when using an IC of another size, the IC socket has to be replaced.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an IC socket in which an IC of another size can be attached to the IC socket even after the IC socket is mounted on a wiring board.

[0013]

According to the present invention, there is provided an IC socket for removably electrically connecting an IC to a wiring board, the IC socket being fixed to the wiring board and electrically connected thereto. A first socket, and a second socket removably electrically connected to the first socket. The second socket is connected to one of terminals provided on both sides of the IC. A first socket piece detachably electrically connected to the terminal, and a second socket piece detachably electrically connected to the terminal on the other side, wherein the first socket is the first and the second socket pieces. It has a socket terminal for detachably electrically connecting the second socket piece in accordance with the distance between the terminals provided on both sides of the IC.

According to the present invention, the first socket is fixed to the wiring board, while the second socket is detachably connected to the first socket. The second socket is composed of first and second socket pieces, and the distance between the two sockets can be changed according to the size of the IC. One and other terminals of the IC are connected to the first and second socket pieces, respectively.

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view of a preferred embodiment of an IC socket according to the present invention, FIG. 2 is a cross-sectional view of the IC socket taken along line BB, and FIG.

The IC socket includes a main body 1 fixed to and electrically connected to a wiring board (not shown), a lower socket terminal 9 provided on the main body 1, and an upper socket 5 removably electrically connected to the main body 1. A socket upper terminal 4 provided on the socket upper portion 5, a socket upper fixing lever 7 provided on the main body 1 for fixing the socket upper portion 5, and a socket fixing provided on the main body 1 and operated in accordance with the movement of the socket upper fixing lever 7. 6.

FIG. 1 also shows an IC 2 and terminals 3 which are not included in the configuration of the IC socket for convenience.

Next, a case where the upper part 5 of the IC socket is fixed to the socket body 1 will be described with reference to FIGS.

The upper part 5 of the socket is composed of two left and right sockets 5.
a and 5b. The socket upper part 5 has a socket terminal 4 (corresponding to the socket terminal 112 of the conventional example) which performs the same movement (movement when fixing the IC) as the conventional IC socket. The connection operation between the IC terminal 3 and the socket terminal 4 is the same as that of the conventional one, so that the description is omitted.

From the socket terminal 4, two legs 8A and 8B project from the same material as the socket terminal 4.

The socket body 1 has socket lower terminals 9A, 9B, 9C and 9D for storing 8A and 8B terminals protruding from the terminals 4 of the socket upper portion 5.

The socket lower terminals 9B and 9C have conductivity and are made of the same material as the socket terminal 4.

Further, the socket lower terminals 9B and 9C are electrically short-circuited to each other.

Next, the connection between the terminals 8A and 8B of the upper socket 5a and the lower socket terminals 9A to 9D of the socket body 1 will be described.

The socket lower terminals 9A to 9D have three types of I
C is provided so as to correspond to the width of the terminal opposite to C.

First, when the width of the terminal 3 facing the IC 2 is the widest, the terminals 8A and 8B are connected to the socket lower terminals 9A and 9B.
B is connected. The socket lower terminal 9A is open, but the socket lower terminal 9B is short-circuited with the pin terminal 9E electrically connected to the wiring board. Therefore, the signal from the terminal 3 of the IC 2 is input to the wiring board via the terminals 8A and 8B, the socket lower terminal 9B and the pin terminal 9E.
Similarly, a signal from the wiring board is input to the terminal 3 of the IC 2 via the pin terminal 9E, the socket lower terminal 9B, and the terminals 8A and 8B.

Next, when the width of the opposite terminal 3 of the IC 2 is standard, the terminals 8A and 8B are the lower terminals 9B and 9C of the socket.
Connected to Both socket lower terminals 9B and 9C are short-circuited with pin terminal 9E. Therefore, terminal 3 of IC2
From the terminal 8A, 8B, the socket lower terminal 9B,
The signal is input to the wiring board via the pin 9C and the pin terminal 9E.
Similarly, a signal from the wiring board is supplied to the IC 2 via the pin terminal 9E, the socket lower terminals 9B and 9C and the terminals 8A and 8B.
Is input to the terminal 3.

Next, when the width of the opposite terminal 3 of the IC 2 is the narrowest, the terminals 8A and 8B are connected to the lower socket terminals 9C and 9B.
Connected to D. The socket lower terminal 9D is open, but the socket lower terminal 9C is short-circuited with the pin terminal 9E electrically connected to the wiring board. Therefore, a signal from the terminal 3 of the IC 2 is input to the wiring board via the terminals 8A and 8B, the socket lower terminal 9C, and the pin terminal 9E.
Similarly, a signal from the wiring board is input to the terminal 3 of the IC 2 via the pin terminal 9E, the socket lower terminal 9C, and the terminals 8A and 8B.

The terminals 8A and 8B of the upper part 5b of the socket are provided.
The connection between the terminal and the socket lower terminals 9A to 9D of the socket main body 1 is the same, and the description is omitted.

The socket body 1 has a lever 7 and a fixed movable part 6.

The lever 7 is L-shaped as shown by a broken line 12 in FIG. 1, and the lower side portion 12 is inserted into the socket body 1.

The lower side 12 of the lever 7 has an elliptical cross section as shown in FIG.

When the lever 7 is tilted downward (in the direction of arrow J in FIG. 3), the lower side 12 of the ellipse pushes the fixed movable portion 6 forward (in the direction of arrow K in FIG. 3).

Further, in order to assist the movement of the lever 7, a spring 11 for urging the fixed movable portion 6 is located at the tip of the fixed movable portion 6.

FIG. 4 is an external view of the fixed movable section 6. FIG.
Referring to FIG. 4 and FIG. 4, a hole 21 which is slightly larger than the socket lower terminals 9A, 9B, 9C, and 9D is formed in the fixed movable portion 6, and the rubber 10 is inserted into the hole 21. ing.

The upper part 5 of the socket is connected to the IC 2 to be measured.
According to the package size of the socket lower terminal 9B,
The terminals 8A and 8B are attached to one or both of the terminals 9C so as to be inserted.

Next, the lever 7 on the IC socket body 1
Down in the direction of arrow J.

At the same time as the lever 7 is pushed down, the lower side 12 rotates in the direction of arrow K, thereby
Is pushed forward (in the direction of arrow L in FIG. 3).

When the fixed movable part 6 is pushed out, the rubber 10 in the fixed movable part 6 pushes the terminals 8A and 8B, and the terminals 8A and 8B are crimped to the terminals 9B and 9C of the socket body 1 and electrically. Conduct.

The upper part 5 of the socket is now in the socket body 1
, And by mounting the IC2, it becomes possible to measure the electrical characteristics and the like of the IC2.

The method of fixing the IC 2 utilizes the bending of the terminal and the repulsive force thereof as in the conventional case.

When the IC 2 is mounted, the outward force is applied to the IC 2.
The upper part of the socket 5 has a problem of withstand pressure due to the socket. However, in the present invention, the contact surface of the upper part 5 of the socket with the socket main body 1 is formed in an inverted T-shape to withstand such force. That is, the projections 5c and 5d are provided at the lower part of the socket upper part 5 in FIG. 2, thereby preventing the socket upper part 5 from being applied with an outward force.

When releasing the socket upper part 5 from the socket body 1, the movable part 6 is released by the force of the spring 11 by pulling up the lever 7, and at the same time, the socket terminals 8A,
8B is also released.

Thus, the upper part 5 of the socket can be removed from the socket body 1.

In this series of operations, the socket upper part 5
When mounting on the socket body 1, the mounting can be selected according to three types of package sizes.

[0046]

According to the present invention, there is provided an IC socket for detachably electrically connecting an IC to a wiring board,
The IC socket includes a first socket fixed to and electrically connected to the wiring board, and a second socket detachably electrically connected to the first socket. The second socket is A first terminal detachably electrically connected to a terminal on one of the terminals provided on both sides of the IC;
And a second socket piece detachably electrically connected to a terminal on the other side. The first socket is provided with the first and second socket pieces on both sides of the IC. Since the socket terminal is configured to have a socket terminal for detachably electrically connecting according to the interval between the terminals, an IC of another size can be attached to the IC socket even after the IC socket is mounted on the wiring board.

[Brief description of the drawings]

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

FIG. 2 is a sectional view taken along the line BB of the IC socket.

FIG. 3 is a sectional view of the IC socket taken along line CC.

FIG. 4 is an external view of a fixed movable portion of the IC socket.

FIG. 5 is a perspective view of a conventional IC socket.

FIG. 6 is an AA cross-sectional view of the IC socket.

FIG. 7 is a sectional view taken along the line AA of the IC socket.

FIG. 8 is a perspective view of an IC socket disclosed in the official gazette.

FIG. 9 is a perspective view of an IC socket disclosed in the official gazette.

FIG. 10 is a perspective view of an IC.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 4 Socket upper terminal 5 Socket upper 6 Socket fixing part 7 Socket upper fixing lever 9 Socket lower terminal

Claims (4)

[Claims] 1. An IC socket for detachably electrically connecting an IC to a wiring board, comprising: a first socket fixed to and electrically connected to the wiring board; and a first socket detachable from the first socket. A second socket electrically connected to the first socket piece, the first socket piece being detachably electrically connected to one of terminals provided on both sides of the IC. And a second socket piece detachably electrically connected to a terminal on the other side, wherein the first socket has the first and second socket pieces provided on both sides of the IC. An IC socket having socket terminals for making electrical connection detachably in accordance with the distance between the sockets. 2. The IC socket according to claim 1, wherein a plurality of said socket terminals are provided in accordance with an interval between terminals provided on both sides of said IC. 3. The first and second socket pieces each have a pin terminal for electrically connecting to a socket terminal of the first socket, and the socket terminal has a pressing portion for pressing and fixing the pin terminal. 3. The method according to claim 1, further comprising:
The described IC socket. 4. The first and second socket pieces are formed such that a contact portion with the first socket extends in a surface direction of the first socket. The IC socket according to any one of the above.