JPH0136708B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical field of the invention The present invention relates to improvements in IC sockets.

(2) Prior art and problems Figure 1 shows a conventional leadless chip carrier structure (LCC type) IC socket.
1 is a perspective view, and b is a sectional view taken along line bb of FIG. In the figure, 1 is a socket body, 2 is a contact, 3 is a terminal, 4 is a presser cover, and 5 is a latch lever.

The IC socket shown in Figure 1 consists of a main body 1, a presser cover 4,
The latch lever 5 is also entirely molded with resin, and a recess 1a for accommodating an LCC type IC is formed in the center of the main body 1, and a plurality of contacts 2 are formed in contact with the electrodes of the IC accommodated in the recess 1a. is insert molded. Furthermore, a support portion 1b for supporting the presser lid 4 is formed at one end of the main body 1, and a pin 1c for locking the latch lever 5 on the opposite side of the support portion. The holding cover 4 is provided to maintain contact between the electrodes of the IC housed in the main body 1 and the contacts 2 of the socket main body, and one end of the holding cover 4 is rotatably supported on the supporting part 1b of the socket main body 1. is,
A locking lever 5 is rotatably attached to the other end by a pin 6. This latch lever 5 has a hook 5a.
is formed, and the hook 5a is biased by the coil spring 7 in the direction to engage the pin 1c of the main body 1.

Such an IC socket requires many molded parts and is expensive, and the structure of the locking lever is complicated, requiring many man-hours to assemble coil springs and the like. In addition, there were drawbacks to its operability, such as poor operability since it was necessary to forcibly open the holding cover when inserting or removing an IC.

(3) Object of the Invention In view of the above-mentioned conventional drawbacks, the object of the present invention is to provide an IC socket that has a simple structure, can be manufactured at low cost, and has good operability.

(4) Structure of the Invention According to the present invention, the present invention provides a socket body that accommodates an IC having a leadless chip carrier structure and has contacts that make contact with the electrodes thereof, and one end of which is pivotally connected to the socket body. and a retainer lid rotatably pivoted to the other end of the latch lever for locking to the socket body to maintain contact between the electrodes of the IC and the contacts of the socket body. , a first spring is inserted into a first pivot portion that supports the presser cover to bias the presser cover in a direction to open it relative to the socket body, and a second pivot portion that supports the latch lever; This is achieved by providing an IC socket characterized in that a second spring is inserted into the IC socket to bias the locking lever in a direction to lock the locking lever to the socket body.

(5) Examples of the invention Embodiments of the present invention will be described in detail below with reference to the drawings.

2 to 5 are diagrams for explaining the structure of the IC socket according to the present invention, in which FIG. 2 is a perspective view, FIG. 3 is a sectional view, and FIGS. 4 and 5 are perspective views of main parts. are shown respectively. In each figure, 10 indicates a socket body, 11 a contact, 12 a terminal connected to the contact, 13 a presser cover, and 14 a latching lever.

The socket body 10 is formed of resin into a substantially square shape, and has a recess 10a in the center of its upper surface for accommodating an IC;
A first pivot portion 10b that supports the presser lid on both rear sides
and a step portion 10c for locking a locking lever is formed at the front portion. The contacts 11 have contact pieces that have elasticity in the vertical direction, and a plurality of contacts are provided in parallel on the four sides (two or three sides are also possible) around the recess 10a of the socket body, and the IC leads are placed on them. By pressing, elastic contact between the two can be obtained.

The presser cover 13 is made of sheet metal, and has bent portions 13a on both sides, and its extensions are connected to the socket body 10.
The first torsion coil spring 15 is rotatably supported by a first pivot portion 10b formed in the socket body 10, and as shown in the exploded view of FIG. 4 and the assembled view of FIG. It is inserted between the lid 13, one end 15a of which is fixed to the socket body 10, and the other end 15b biases the holding lid 13 in the direction of opening from the socket body 10.

The latch lever 14 is made of resin and has a claw portion 14a and a handle portion 14b, as shown in the cross-sectional view of FIG. The claw 14a is supported and always biased by a second torsion coil spring 17 in a direction in which the claw 14a is engaged with the stepped portion 10c formed on the socket body 10.

In this embodiment configured in this way, the IC is accommodated in the recess 10a of the socket body 10, and the presser cover 13 is
When the latching lever 14 is closed, the claw 14a of the latch lever 14 will close the body 10.
It is locked by engaging with the stepped portion 10c. and IC
is held under pressure by the presser cover 13, and its electrode contacts the contact 11 and is electrically connected. To take out the stored IC, press the handle 1 of the latch lever 14.
4b in the direction in which the claw 14a is removed from the main body 10, the lock is released, and at the same time, the presser cover 13 is opened by the first torsion coil spring 15 and maintained in that state. When inserting and removing ICs in this way,
Since the retaining lid 13 is maintained in the open state by the first torsion coil spring 15, it does not interfere with the insertion and removal of the IC and improves operability.

(6) Effects of the Invention As described above in detail, the IC socket of the present invention has a simple structure and can be manufactured at low cost. In addition, by using a spring to maintain the presser cover in the open state when the locking lever is released, the operability of inserting and removing ICs has been improved compared to the conventional method, which has great effects. .

[Brief explanation of drawings]

FIG. 1 is a diagram for explaining the structure of an example of a conventional IC socket, and FIGS. 2 to 5 are diagrams for explaining an IC socket according to the present invention.
The figure is a perspective view of the exterior, Figure 3 is a partially sectional side view, and Figure 4 is a partially sectional side view.
The figure is an exploded perspective view of the main parts, and FIG. 5 is an assembled perspective view thereof. In the drawing, 10 is a socket body, 11 is a contact, 12 is a terminal, 13 is a presser cover, 14 is a locking lever, 15 is a first torsion coil spring, 17
respectively indicate the second torsion coil springs.

Claims (1)

[Claims] 1. A socket body that accommodates an IC with a leadless chip carrier structure and has contacts that come into contact with its electrodes, one end of which is pivotally attached to the socket body, and the other end of which is locked to the socket body. a retaining lid for rotatably pivoting the latch lever to maintain contact between the electrodes of the IC and the contacts of the socket body; a first pivot portion supporting the retaining lid; inserting a spring to bias the presser cover in the direction of opening with respect to the socket body, and inserting a second spring into a second pivot portion supporting the locking lever to lock the locking lever into the socket. An IC socket characterized by being biased in the direction of locking onto the main body.