JP2983278B2 - Lid opening mechanism of IC socket with lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] Regarding the structure of a lid opening mechanism of an IC socket with a lid, an object of the present invention is to provide a lid opening mechanism capable of reliably releasing the lock of a closed lid. An IC socket with a lid having one end hinged to the socket body 2 and a lid 3 rotatably attached via a pin 6 to the other end is unlocked by the hook 5. A lid opening mechanism for opening the lid 3, which moves up and down,
In the lowering step, a pusher 11 for rotating the hook 5 in the unlocking direction, and the pusher 11 move up and down in conjunction with the pusher 11,
At least at the time from the end of the downward stroke of the pusher 11 to the initial stage of the upward stroke, the pusher 11 is provided with a non-return means 12 which engages with the hook 5 to suppress the reverse rotation.

[2] In the above [1], the lower end of the pusher 11 is formed so as to form a slope having an angle equal to the inclination of the operation arm of the hook 5 at the end of its downward stroke.

[3] In the above [1], the non-return means 12 is the pusher 11
The shaft 13 is fixed to the shaft 13 so as to be rotatable.

[4] In the above-mentioned [3], the pusher 11 is
And a stopper 15 for restricting the rotation of the non-return means 12 by the urging means 14 for urging the check means 12 in the direction of engaging with the hook 5.

[Industrial applications]

The present invention relates to a lid opening mechanism of an IC socket with a lid, and particularly to a structure of a lid opening mechanism in a device for attaching and detaching an IC to and from the 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 for 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, it is necessary to always lock the IC when mounting it. I c
At the time of removal, it is necessary to release the lock and open the lid. Therefore, attaching and detaching a large number of ICs manually requires a great deal of labor, and automation of attaching and detaching ICs to and from a burn-in board or the like 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 that lock the lids 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, and a mechanism for unlocking and opening the lid (hereinafter, referred to as a lid opening mechanism). However, the lid opening mechanism has a structure in which the pusher simply presses the operation arm of the hook downward to rotate the hook. That is,
First, when the pusher is lowered and the hook is pressed near the end of the operating arm and the hook is rotated, the hook claw is disengaged from the claw receiving portion of the socket body. Urged to open on its own,
That is.

[Problems to be solved by the invention]

However, such a conventional lid opening mechanism (prototype)
In some cases, immediately after the pusher starts to ascend, the hook is reversed by the spring built into the lid and relocks (especially when there is no IC installed in the IC socket).
There is a problem that the lid does not always open surely, and it has not reached 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 opening mechanism capable of reliably unlocking a closed lid of an IC socket with a lid.

[Means for solving the problem]

According to the present invention, [1] a lid having a lid 3 to which one end is hinged to the socket body 2 and a hook 5 is rotatably mounted via a pin 6 at the other end. A lid opening mechanism that releases the lock of the IC socket by the hook 5 and opens the lid 3, moves up and down, and presses the operation arm 5b of the hook 5 in the lowering process to rotate the hook 5 in the unlocking direction. A pusher 11 to be urged, and a non-return means 12 that moves up and down in conjunction with the pusher 11 and engages with the hook 5 at least at the time from the end of the downward stroke of the pusher 11 to the beginning of the upward stroke to prevent the pusher 11 from reversing. [2] In the above [1], the lower end of the pusher 11 forms a slope having an angle equal to the inclination of the operation arm of the hook 5 at the end point of the downward stroke thereof. By that, In the above [1], the non-return means 12 is configured to be rotatably fitted to the shaft 13 fixed to the pusher 11, so that [4] the pusher 11 is non-returned in the above [3]. Urging means 14 for urging the means 12 in the direction of engaging with the hook 5;
This is achieved by having a configuration that has a stopper 15 for restricting the rotation of.

[Action]

When the pusher descends and presses the upper surface of the hook near the end of the operating arm to rotate the hook and the hook claw comes off from the claw receiving portion of the socket body, the claw of the upside-down raising means moves to the lower surface of the operation arm. When the pusher starts to move upward, the state is maintained for a while, so that the hook is prevented from reversing immediately after the pusher starts moving upward. As the pusher rises, the hook of the check means comes off the lower surface of the operation arm and the hook reverses, but the lid is starting to open on its own, and the hook's claw position is higher than the socket body's claw receiver. So you won't lock again.

Since the shape of the lower end of the pusher has a slope with an angle equal to the inclination of the operation arm of the hook at the end point of the lowering process, the operating arm makes surface contact with the pusher and the IC socket at the end point of the lowering process. Even if the relative positions of the pushers vary, the rotation angle of the pusher does not vary.

〔Example〕

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

FIGS. 1A and 1B are main part side views for explaining an embodiment of the present invention. FIG. 1A is a state before the lid is opened, FIG. 1B is a state when the lock is released, and FIG. An intermediate state, and FIG. 7D shows a state in which the lid is completely opened. In the figure, 1 is
This is an IC socket with a lid for mounting an IC. First, the structure will be described. This is the socket body 2, lid 3, shaft 4
It consists of hooks 5 and the like. One end of the lid 3 is fitted to a shaft 4 provided at one end of the socket body 2, and is urged by a spring (not shown) attached to this fitting portion to reach the position shown in FIG. You can open it. Pin 6 on the other end of lid 3
The hook 5 is rotatably mounted via the. The hook 5 has a substantially T-shape, has a claw portion 5a at a lower end of a vertical portion thereof, and a lateral portion thereof serves as an operation arm 5b, and is fitted to the pin 6 near an intersection of the vertical portion and the horizontal portion. 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, the lid 3 is locked to the socket body 2.

In the figure, reference numerals 11 and thereafter denote each part of the lid opening mechanism of the present invention. A pusher 11 moves up and down by a linear actuator or the like (not shown). The lower end 11a is inclined, and its angle is equal to the angle of inclination of the operating arm 5a of the hook 5 at the end point of the stroke. Numeral 12 denotes a non-return means, which is rotatably fitted to the shaft 13 to which the pusher 11 is fixed. The lower end is provided with a claw portion 12a. Reference numeral 14 denotes an urging means composed of a helical spring or the like, which is engaged with the pusher 11 and the upper end of the non-return means 12, and urges the claw portion 12a of the non-return means 12 in a direction engaging with the hook 5. Reference numeral 15 denotes a stopper, which restricts rotation of the check means 12 by the urging means 14. Reference numeral 16 denotes a lid feed lever, which comes into contact with the lid 3 which is unlocked and tries to open rapidly by itself and gently feeds it to the position shown in FIG.
It is driven by an actuator or the like (not shown).

Next, the movement of each part when the lid of the IC socket with a lid is unlocked and opened by the lid opening mechanism will be described.
(A) The pusher 11 descends from the state shown in the figure, and the lower end 11a of the pusher 11 pushes the operating arm 5b of the hook 5 to rotate the hook 5, and at the end of the descending stroke, the hook 5 is rotated. The hook 5a of the hook 5 is separated from the claw receiving portion 2a of the socket body 2 and the lock is released, and the state shown in FIG. During this time, the claw portion 12a of the check means 12 descends along the end surface of the operation arm 5b of the hook 5, enters the lower surface thereof, and is engaged therewith. Next, when the pusher 11 starts to move upward, the lid 3 starts to open following the pusher 11, but the hook 5 remains locked with the non-return means 12 which rises in conjunction with the pusher 11 for a while. When the pusher 11 is further raised and the lid 3 is further opened, the engagement between the hook 5 and the check means 12 is released, and the hook 5 is reversed and returns to the original position. Immediately after that, the lid 3 is
Touch This is the state shown in FIG. Thereafter, the pusher 11 is further raised, and the cover feed lever 16 moves in the direction in which the cover 3 is opened, and the state shown in FIG.

Closed lid 3 of IC socket 1 with lid by this lid opening mechanism
As a result, regardless of the presence or absence of the IC in the socket, the lock could always be reliably released to open the third.

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 opening mechanism capable of reliably unlocking a closed lid of an IC socket with a lid, and to provide an IC to an IC socket with a lid.
The mounting 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, 11 is a pusher, 11a is a lower end portion, Numeral 12 denotes a non-return means, 13 denotes a shaft, 14 denotes a biasing means, and 15 denotes a stopper.

──────────────────────────────────────────────────続 き 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) 95647 (JP, U) JP-A-3-128871 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G01R 32/26 H01L 23/32 H01R 33/76

Claims (4)

(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). The hook (5) is locked to the socket body (2) by locking. A lid opening mechanism for opening the lid (3) by unlocking the lid (3) of the IC socket (1) with a lid, which can be moved up and down, and moves the hook ( 5) a pusher (11) for pressing the operation arm (5b) to rotate the hook (5) in the unlocking direction; and a pusher (11) that moves up and down in conjunction with the pusher (11), and at least lowers the pusher (11). An IC socket lid opening mechanism with a lid, characterized by having a non-return means (12) engaged with the hook (5) at the time from the end point of the stroke to the beginning of the ascent stroke to prevent the hook (5) from reversing. 2. A lower end (11a) of the pusher (11) has a slope having an angle equal to the inclination of the operating arm (5b) of the hook (5) at the end point of the downward stroke. 2. A lid opening mechanism for an IC socket with a lid according to claim 1. 3. The check means (12) is provided with the pusher (1).
2. The lid opening mechanism of an IC socket with a lid according to claim 1, wherein the lid is rotatably fitted to a shaft fixed to 1). 4. The pusher (11) is connected to the check means (1).
An urging means (14) for urging the hook (5) in a direction to engage the hook (5), and a stopper (15) for restricting rotation of the check means (12) by the urging means (14). The lid opening mechanism for an IC socket with a lid according to claim 3, comprising: