JP2500850Y2 - IC socket - Google Patents

Description

[Detailed Description of the Invention] [Industrial application field] The present invention is an open top type IC socket in which a lead terminal attached to an IC device and a contact pin arranged in a row in a socket body are brought into contact with each other by vertical movement of a cover. Regarding the improvement of.

[Conventional technology]

In recent years, as the density of IC devices has increased, the number of lead terminals has increased, and the density of contact pins is increasing in IC sockets for mounting such IC devices. For example, pins such as 256-pin and 328-pin It has reached the number. Conventionally, a so-called open-top type socket has been proposed as an IC socket suitable for a high-density IC device formed by attaching a large number of lead terminals on the side surface, but Fig. 5 shows the conventional open-top type. The structural example of a formula IC socket is shown. In the figure, 1 is the socket body, 2 is the IC to be mounted
A large number of contact pins are implanted so as to be connected to the lead terminals of the device (see FIG. 7), and the contact pins 3 are tapered around the central housing portion 3a for mounting and housing the IC device. It is a cover formed with a portion 3b and attached to the socket body 1 so as to be vertically movable. Here, the contact pin 2 has a contact portion 2a to be in contact with the lead terminal of the IC device and a taper portion 3b of the cover 3.
Pressure contact part 2b and these contact parts 2a which are adapted to slide contact with
And a bending portion 2c for elastically supporting the press contact portion 2b and a leg portion 2d for connecting to an external circuit. Reference numeral 4 is a guide member formed of, for example, a bolt and a nut, which is inserted into the socket body 1 and the cover 3 to form a constant space therebetween, and 5 is a compression coil spring. In FIG. 5, the accommodating portion 3a of the cover 3 is empty, but as the cover 3 is pushed up by the compression coil spring 5, the contact portion 2a of the contact pin 2 moves to the inward position. ing.

When an IC device is mounted on such a conventional IC socket, as shown in FIG. 6, the cover 3 is pushed down against the elasticity of the compression coil spring 5 with a finger or the like. As a result, the press contact portion 2b of the contact pin 2 slides upward with respect to the taper portion 3b of the cover 3 by the elasticity of the bending portion 2c and tilts in the direction of arrow A. Along with this, the contact portion 2a also moves from the state shown in FIG. 5 to the outer position, and as a result, the contact pin is opened so that the IC device can be mounted. Next, in this open state, the IC device is put into the accommodation portion 3a and placed at a predetermined position. When the finger is released from the cover 3 and the pushing down is released after the placement, the cover 3 is pushed up by the compression coil spring 5, and as shown in FIG. 7, the pressure contact portion 2b and thereby the contact portion 2a are reversed. It is moved to the inward position by the tapered portion 3b (arrow B). Therefore, the press contact portion 2b of the contact pin 2 comes into contact with the lead terminal of the IC device on which the IC pin is placed, at an appropriate pressure, and thus the IC device has a leg portion.
It is connected to an external circuit or the like via 2d.

[Problems to be solved by the device]

However, in the conventional IC socket, when the IC device is mounted or the mounted IC device is removed, it is necessary to push down and push up the cover 3 at least once with a finger or an automatic machine, so that a large number of IC sockets are used. When carrying out the burn-in test, there was a problem that the workability was remarkably deteriorated and the working time was wasted. Further, since the cover 3 is pushed up when the IC device is attached, the vertical thickness of the IC socket becomes large in this state. like this
When a large number of IC boards connected with IC sockets are stacked in the burn-in equipment, the space between the boards cannot be narrowed and the space in the equipment cannot be effectively utilized.

In view of such circumstances, an object of the present invention is to provide an open top type IC socket which can improve the workability of this type of IC socket and can effectively utilize the space of the burn-in device.

[Means for solving the problem]

The IC socket according to the present invention has an upward movement habit, is formed with a pushing taper portion, and pivotally mounts at least one stopper having a locking claw on the outer side of the vertically movable cover. An ammunition member for closing the claw is provided, and a taper portion with which the locking claw can slide in contact with the stopper corresponding position of the socket body and an engaging portion with which the locking claw can be engaged are formed.

Further, in the IC socket of the present invention, the pushing taper portion formed on the cover so as to act on the pressure contact portion of the contact pin in order to bring the contact portion of the contact pin into contact with the lead terminal of the IC device is directed downward. It spreads like a trumpet.

[Action]

According to the present invention, when the cover is pushed down, the contact pin comes into contact with the lead terminal of the mounted IC device, but at the time of this pushing down, the stopper claw pivotally attached to the cover is inserted into the socket. It slides along the tapered portion of the main body and then engages with the engaging portion, whereby the cover is held in the depressed state. That is, the connection state of the lead terminal and the contact pin can be secured only by pushing down the cover once. Therefore, the work is extremely easy, and the cover is pushed down when the contact pin is brought into the connected state. The thickness of the socket at that time is thin.

Further, according to the present invention, the pressing taper portion formed on the cover allows the contact pin to be smoothly operated so as to bring the contact pin into the connected state by pushing down the cover.

〔Example〕

1 to 4, the same members as those in the conventional example are designated by the same reference numerals, and the open top type IC of the present invention is used.
An embodiment of the socket will be described. First, cover 3
Is attached to the socket body 1 so as to be vertically movable,
It is the same as the conventional example that the IC device is mounted on the mounting portion 3c protruding from the bottom surface of the accommodating portion 3a by inserting the IC device into the accommodating portion 3a of the cover 3, in the present embodiment. In this case, as will be described later, when the cover 3 is being pushed up by the compression coil spring 5, the IC device is in a contact pin open state in which the IC device can be mounted. In the figure, 6 is a pair of stoppers pivotally attached to the outer side of the cover 3, 7 is a pivot for the stopper 6, 8 is an insertion hole (see FIG. 2) through which both ends of the pivot 7 are inserted, and 9 is A torsion coil spring in which the pivot 7 is fitted and fitted into a mounting projection 6a provided in the stopper 6 and one end of which is engaged with the locking groove 10 formed in the cover 3 and the other end of which is engaged with the stopper 6, and 11 is an R-shaped projection. , 12 are E-rings for the pivot 7. Here, a locking claw 6b is formed in the lower part of the stopper 6, and the stopper 6 pivotally mounted is rotated in the arrow C direction (FIG. 2) by the elasticity of the torsion coil spring 9. Is urged to. Further, 13 is a tape portion formed so that the locking claw 6b can be slidably contacted at a position corresponding to the stopper 6 on the outer peripheral portion of the socket body 1, and 14 is formed so that the locking claw 6b can be engaged. It is an engaging portion (see FIG. 3).

Further, as shown in FIG. 4, the cover 3 is formed with a pushing taper portion 3b 'which comes into contact with the press contact portion 2b of the contact pin 2. The pushing taper portion 3b' is directed downward. It is designed to spread like a trumpet.

Since the open top type IC socket according to the present invention is constructed as described above, the cover 3 is pushed up by the compression coil spring 5 to open the contact pin, but at this time, the stopper 6 Since the locking claw 6b is located at a position corresponding to the taper portion 13 of the socket body 1, and the stopper 6 is given the right turning property (arrow C) by the torsion coil spring 9 as shown in FIG. Therefore, the locking claw 6b is in pressure contact with the tapered portion 13 when the contact pin is open. Next, in such a state, when the IC device is put into the accommodating portion 3a of the cover 3 and the cover 3 is pushed down by a finger or the like, the press contact portion 2 of the contact pin 2 pushes the cover 3 with reference to FIG. It makes elastic contact with the moving taper portion 3b ', but since the pushing taper portion 3b' is expanded downward, the repulsive force of the plurality of pressure contact portions 2b is strong against the force pushed downward by the cover 3. As shown in FIG. 4, the pressure contact portion 2b is pushed to the upper left as the button is pushed down. Then, the contact portion 2a is moved inward by the action of the pressure contact portion 2b and comes into contact with the corresponding lead terminal of the mounted IC device. Thus, the lead terminal and the contact pin 2 are in the connected state, while the locking claw 6b which slides along the tapered portion 13 by pushing down the cover 3 passes through the lower end of the tapered portion 13 and then the torsion coil spring 9 The engaging portion 14 of the socket body 1 is biased to rotate
, Which holds the contact pin 2 in the connected state.

Contrary to the above, when removing the IC device with the lead terminal connected from the IC socket, use the stopper 6
Is rotated in the direction opposite to the arrow C (FIG. 2), the engaging portion 6b is easily disengaged from the engaging portion 14, and the cover 3 is pushed up by the elastic force of the compression coil spring 5. Since the contact pins are opened by pushing up the cover 3, the IC device can be taken out from the IC socket.

In this way, when the IC device is attached to the IC socket, the lead terminal and the contact pin 2 can be connected and the connected state can be held by only pushing down the cover 3, and therefore the attaching operation is extremely simple. Furthermore, since the cover 3 is pushed down in such a connected state,
Since the thickness of the IC socket as a whole is correspondingly thin, the space between the IC substrates can be narrowed in the burn-in device, which can reduce the installation space.

[Effect of device]

As described above, the IC socket of the present invention covers the operation of attaching and detaching the IC device from the opening of the cover of the IC device while pressing the cover against the upward movement habit like the conventional open top type IC socket. From above the opening
The IC device was inserted, then the pressing force was released, the cover was floated and returned, and the IC device was connected.By adopting the present invention, the cover is pressed against the upward movement habit. Insert the IC device from above the opening of the cover, then simply press the cover against the upward movement habit until it contacts the socket body to connect the IC device and lock the socket body and cover with the stopper It can be improved to a remarkably simple task that can be done. When it is done manually, the operator's feeling of fatigue is eliminated and the application of the automatic machine becomes easy. Further, as a result of being able to reduce the thickness when using the IC socket, there is an advantage that the space in the burn-in device can be effectively utilized.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an embodiment of an open top type IC socket according to the present invention, FIG. 2 is an exploded perspective view of a main part of the IC socket of the present invention, and FIG. 3 is a III-III line of FIG. Fig. 4 is a cross-sectional view of the IC socket according to the present invention.
5 to 7 are partial vertical sectional views for explaining the operation of the conventional IC socket. 1 ... Socket body, 2 ... Contact pin, 3 ... Cover, 5 ... Compression coil spring, 6 ... Stopper, 7 ...
… Axis, 9 …… Torsion coil spring, 12 …… E ring, 13
...... Tapered part, 14 ...... engaged part.

Claims (1)

(57) [Scope of utility model registration request] 1. A contact pin arranged in a row in a socket body is elastically deformed by a sliding contact action with a pushing taper portion by vertical up and down movement of a cover having upward movement habit and formed with a pushing taper portion. In the open top type IC socket in which the IC device can be attached to and detached from the side peripheral surface of the IC device so that the IC device can be attached and detached from the opening of the cover, the pushing taper part is directed downward. An ammunition machine which is arranged so as to spread in a trumpet shape and slidably contact with the contact pin, and at least one stopper having a locking claw is pivotally attached to the outer side of the cover and the locking claw is closed. A member is provided, and at the corresponding position of the stopper of the socket body, a taper portion with which the locking claw can slidably contact and an engaging portion with which the locking claw can be engaged are formed, and when the cover moves upward, the above The contact pin is separated from the lead terminal by its elasticity, and when the cover moves downward, the contact pin is elastically deformed so as to come into contact with the lead terminal against the elasticity of itself, and the cover is locked by the stopper. An IC socket characterized by being used.