JP2983277B2 - Lid closing mechanism for IC socket with lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] The present invention relates to a lid closing mechanism of an IC socket with a lid, and particularly to a structure of a lid closing mechanism in a device for attaching / detaching an IC to / from an IC socket with a lid, wherein a closed lid is securely locked to a socket body. [1] A lid having one end hinged to the socket body 2 and a hook 5 rotatably attached to the other end via a pin 6 at the other end. 3 and a hook 5 is provided with a claw portion through a fitting portion with the pin 6.
A lid closing mechanism for closing and locking the lid 3 of the IC socket 1 with a lid, which is provided with a lid 5a and an operation arm 5b and is capable of locking the pawl part 5a by being fitted into the pawl receiving part 2a of the socket body 2. A base 12 that moves up and down, a shaft 12 fixed to the base 11, and an L-shaped lever 13 that is L-shaped and rotatably fits on the shaft 12 in a vertical portion thereof. The lower surface of the L-shaped lever 13 presses the operating arm 5b to close the cover 3 by the lowering of the lever 11, and the shaft 12 is offset more outward than directly above the pin 6 with the cover 3 closed. It is configured to move up and down at the set position.

[2] In the above [1], a biasing means 14 which contacts the base 11 and the L-shaped lever 13 to bias the L-shaped lever 13 in one direction via a shaft 12; And a stopper 15 for restricting the rotation of the L-shaped lever 13 by the urging means 14 and keeping the lateral portion substantially horizontal.

[Industrial applications]

The present invention relates to a lid closing mechanism of an IC socket with a lid, and more particularly to a structure of a lid closing mechanism in a device for attaching and detaching an IC to and from an IC socket with a lid.

When testing and measuring ICs, IC sockets are often used. In particular, many IC sockets are used for the burn-in test. That is, in the burn-in test, a large number of IC sockets are mounted on a printed wiring board and used to perform batch processing by simultaneously operating a large number of ICs (this is called a burn-in board).

In recent years, flat packages and chip carriers have been widely used as IC packages suitable for high-density mounting. IC sockets with lids are used as IC sockets for these packages, but since this is a structure in which the IC is pressed against the contacts of the socket by closing the lid, the lid must always be closed and locked when the IC is mounted. It requires an operation to release the lock and open the lid when removing the IC. Therefore, it takes a great deal of labor to manually attach and detach a large number of ICs.
Automation of attaching and detaching is desired.

[Conventional technology]

Some prototypes have been introduced as automatic machines for attaching and detaching ICs to and from burn-in boards equipped with a large number of IC sockets with lids (types in which the lids are locked to the socket body with hooks attached to the lids). They have a mechanism for loading and unloading ICs into and out of the socket body, a mechanism for closing and locking the lid to the socket body (hereinafter referred to as a lid closing mechanism), and a mechanism for unlocking and opening the lid. However, the lid closing mechanism has a structure in which the pusher contacts the upper surface or the hook of the lid with the upper surface, and then simply pushes the lid downward after the lid has been halfway down.

[Problems to be solved by the invention]

However, such a conventional lid closing mechanism (prototype)
In the type where the pusher presses the lid, the lid may be bent due to the pressure after the lid comes into contact with the socket body and the position of the hook claw may shift, and the type where the pusher presses the upper surface of the hook Depending on the position of the applied point, a force acts in a direction in which the hook claw is moved away from the socket body, or a force acts to prevent the hook claw from passing through the side of the socket body. For this reason, the lock is not always secure, and there is a problem that the lid in use may open, so that it has not been put to practical use. Therefore, it relies on manual work.

An object of the present invention is to solve such a problem and to provide a lid closing mechanism capable of closing a lid of an IC socket with a lid and securely locking the lid to the socket body.

[Means for solving the problem]

According to the present invention, [1] one end is hinged to the socket body 2 and the other end has a lid 3 to which a hook 5 is rotatably attached via a pin 6, The hook 5 has a claw portion 5a and an operation arm 5b via a fitting portion with the pin 6, and a lid capable of locking the claw portion 5a by being fitted into the claw receiving portion 2a of the socket body 2. IC socket 1
A lid closing mechanism that closes and locks the lid 3, comprising a base 11 that moves up and down, a shaft 12 fixed to the base 11, and an L-shape that is rotatably fitted to the shaft 12 at a vertical portion thereof. L
And the L-shaped lever 13
The lower surface of the lateral part of the structure pushes the operation arm 5b to close the lid 3, and the shaft 12 moves up and down at a position offset more outward than directly above the pin 6 when the lid 3 is closed. [2] Further, in the above [1], the base 11 and the L
A biasing means 14 which contacts the L-shaped lever 13 and biases the L-shaped lever 13 in one direction via the shaft 12, and a rotation of the L-shaped lever 13 fixed to the base body 11 and by the biasing means 14. This is achieved by having a stopper 15 that restricts and keeps the lateral portion substantially horizontal.

[Action]

The lid closing mechanism of the present invention belongs to the type in which the pusher presses the upper surface of the hook, but the pin (rotation axis of the hook) supporting the L-shaped lever and transmitting the force to the L-shaped lever with the position of the lid closed. ) Is offset outwardly from above (ie, the hook claw is shifted in a direction opposite to the direction in which the hook claw is fitted into the claw receiving portion of the socket body), and L
Since the lever is rotatable and follows the movement of the hook, when the lid is completely closed, a rotational moment is generated in the hook, and a force is applied in the direction in which the claw portion is fitted into the claw receiving portion of the socket body. Lock is obtained. Further, since the L-shaped lever is rotatable, it does not prevent the hook claw from passing through the side of the socket body.

〔Example〕

FIG. 1 (a) shows an embodiment of a lid closing mechanism according to the present invention.
This will be described with reference to FIG.

FIG. 1 is a side view of a main part for explaining an embodiment of the present invention. FIG. 1A shows a state before the lid is closed, and FIG. 1B shows a state after the lid is completely closed. In the drawing, reference numeral 1 denotes an IC socket with a lid for mounting an IC. First, the structure will be described. It comprises a socket body 2, a lid 3, a shaft 4, a hook 5, and the like. One end of the lid 3 is fitted with a shaft 4 provided at one end of the socket body 2, and is urged by a spring (not shown) to open to the position AA in FIG. Can be done. A hook 5 is rotatably attached to the other end of the lid 3 via a pin 6. The hook 5 has a substantially T-shape, has a claw portion 5a at a lower end of a vertical portion thereof, and has an operation arm 5b at a lateral portion thereof.
And the pin 6 is fitted near the intersection of the vertical part and the horizontal part. The lid 3 is locked to the socket body 2 by locking the claw 5a of the hook 5 with the claw receiving portion 2a of the socket body 2 with the lid 3 closed.

In the drawing, reference numerals 10 and thereafter show each part of the lid closing mechanism of the present invention. Reference numeral 10 denotes a cover feed lever, which is driven by a rotary actuator or the like (not shown) to lower the cover halfway. 11
Denotes a base, which moves up and down by a linear actuator or the like (not shown). Reference numeral 12 denotes a shaft, which is fixed to the base 11. Reference numeral 13 denotes an L-shaped lever, which has an L-shape, and is rotatably fitted to the shaft 12 at a vertical portion thereof. Reference numeral 14 denotes a spring (biasing means), which comes into contact with the L-shaped lever 13 above the fitting portion and is compressed between the L-shaped lever 13 and the base 11. A stopper 15 limits the rotation of the L-shaped lever 13 by the spring 14.
By the action of the spring 14 and the stopper 15, the L-shaped lever 13
Keeps the posture in which the lateral part is substantially horizontal and assists in following the movement when contacting with the hook 5.

In the lid closing mechanism of the present invention, the positional relationship between the object and the IC socket 1 is important. That is, the position of the shaft 12 is not directly above the pin 6 when the lid 3 is completely closed, but the IC socket 1
(The right side of the IC socket in the figure) (ie, the hook 5a of the hook 5 is displaced in a direction opposite to the direction in which the hook 5a is fitted into the hook receiving portion 2a of the socket body 2).

Next, the movement of each part when the lid of the IC socket with lid is closed by the lid closing mechanism will be described. The cover 3 is tilted partway by the cover feed lever 10 (for example, 30
角度 angle). Thereafter, the base 11 descends, and the lower surface of the L-shaped lever 13 contacts and presses the operating arm 5b of the hook 5,
The lid 3 is pushed down together with the hook 5. The claw portion 5a at the lower end of the hook 5 descends along the side surface of the projection 2b of the socket body 2 and reaches the claw receiving portion 2a. At this position, the lid 3 comes into contact with the upper surface of the projection 2b of the socket body 2, and the lowering of the L-shaped lever 13 is stopped here. Until the claw portion 5a passes through the side surface of the projection 2b and reaches the claw receiving portion 2a, the lower surface of the L-shaped lever 13 gives a rotational moment to the hook 5 in an attempt to follow the change in the posture of the hook 5,
When the claw portion 5a reaches the claw receiving portion 2a, the claw portion 5a fits into the claw receiving portion 2a. The lid is now closed and the base 11 is L-shaped lever.
Ascends with 13.

As a result of closing the lid 3 of the IC socket 1 with the lid by the lid closing mechanism, the lid 3 was always securely locked to the socket body 2.

The present invention is not limited to the above embodiments, and can be implemented in various modifications.

〔The invention's effect〕

As described above, according to the present invention, it is possible to provide a lid closing mechanism capable of closing the lid of the IC socket with the lid and securely locking the lid to the socket body, and mounting and removing the IC to and from the IC socket with the lid. Can be automated.

[Brief description of the drawings]

FIG. 1 is a side view of an essential part for explaining an embodiment of the present invention. In the figure, 1 is an IC socket, 2 is a socket body, 2a is a claw receiving portion, 3 is a lid, 5 is a hook, 5a is a claw portion, 5b is an operating arm, 6 is a pin, 12 is a shaft, and 13 is an L-shaped lever. , 14 is a spring (biasing means) and 15 is a stopper.

Continuation of the front page (56) References JP-A-62-187264 (JP, A) JP-A-63-28044 (JP, A) JP-A-62-187265 (JP, A) JP-A-3-95647 (JP) , U) Hikaru 3-128871 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H01L 23/32 H01R 33/76 G01R 32/26

Claims (2)

(57) [Claims] 1. One end is hinged to a socket body (2),
The other end has a lid (3) to which a hook (5) is rotatably mounted via a pin (6), and the hook (5) is connected to the pin (6) via a fitting portion. With a claw (5a) and an operating arm (5b), and a lid that can be locked by fitting the claw (5a) into the claw receiving portion (2a) of the socket body (2). A lid closing mechanism for closing and locking the lid (3) of the IC socket (1), comprising a base (11) moving up and down, a shaft (12) fixed to the base (11), and an L-shape. Anyway, the axis (1
2) an L-shaped lever (13) rotatably fitted to the base (11), and the lower surface of the lateral portion of the L-shaped lever (13) is lowered by lowering the base (11). 5b) is pressed to close the lid (3), and the shaft (12) is offset more outward than immediately above the pin (6) when the lid (3) is closed. A lid closing mechanism for an IC socket with a lid that moves up and down in position. 2. An urging means for coming into contact with said base (11) and said L-shaped lever (13) and urging said L-shaped lever (13) in one direction through said shaft (12). (14), the L-shaped lever (13) fixed to the base (11) and restricting rotation of the L-shaped lever (13) by the urging means (14).
2. A lid closing mechanism for an IC socket with a lid according to claim 1, further comprising a stopper (15) for keeping a lateral portion of the IC socket substantially horizontal.