JPH0614432B2 - Switch device for opening and closing the lid - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch for opening / closing a lid of a CD player or the like.

2. Description of the Related Art In recent years, in a small CD player or the like, the light emission of the laser diode is stopped by operating a switch at the same time as opening and closing the lid for safety.

An example of the above-described conventional lid opening / closing interlock switch will be described below with reference to the drawings.

FIG. 4 shows a conventional lid opening / closing interlocking switch. In FIG. 4, 1 is a main body, 2 is a lid pivotally supported by the main body 1, 10 is a switch in which a rod-shaped projection 10a is projected into the through hole 1a of the main body 1, 4 is a hook, and 3 is a fastener fixed to the lid. is there.

Now, when the lid 2 pivotally supported on the main body 1 is closed, the rod-shaped projection 10a of the switch 10 protruding into the through hole 1a of the main body is pushed to bring the switch into a conductive state, and the metal fitting 3 fixed to the lid 2 is hooked to the hook 4. And the switch 10 is kept in the conductive state.

When the hook 3 is released by the swinging of the hook 4, the lid 2 is opened by, for example, a spring, the rod-shaped projection 10a of the switch 10 is released from the pressing state, and the switch 10 is turned off. Become.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-described configuration, the rod-shaped protrusion is caught on the main body, or the switch is turned on by simply pressing the rod-shaped protrusion. It had a problem of insufficient safety.

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a lid opening / closing interlock switch that can surely bring the switch into a non-conducting state by opening the lid.

Means for Solving the Problems In order to solve the above problems, the lid opening / closing interlock switch of the present invention has two contacts arranged near both sides of a hook that locks the lid and is fixed to the lid to engage with the hook. The opening / closing interlocking switch of the lid is constructed by using the fitting metal fittings as the short-circuit piece of the two contacts.

Action The present invention has the above-described configuration, and the fastener fixed to the lid is separated from the hook by the opening of the lid, so that the two contacts arranged near the hook are never short-circuited.

Embodiment A lid opening / closing interlock switch according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an opening / closing interlocking switch of a lid in an embodiment of the present invention. In FIGS. 1 and 2, 1 is a main body, 2 is a lid rotatably supported on the main body 1, 3 is a metal fitting fixed to the lid 2, and 4 is a swingably supported body on the main body 1. The hook 5 is fixed to the main body 1 and has two contacts 5a and 5b.
Is a switch body which is arranged near both sides of the hook 4.

The operation of the lid opening / closing interlock switch configured as described above will be described.

Now, when the lid 2 draws a locus like a chain double-dashed line in FIG. 2 and closes, the fastener 3 fixed to the lid 2 abuts the slope 4a of the hook 4, and the hook 4 springs (not shown). Window) 3a of the fastener 3 that moves against the biasing force of
When passes through the slope 4a of the hook 4, the hook 4 returns by the biasing force of a spring or the like, and the fastener 3 is locked by the window 3a. At the same time, the fastener 3 contacts two contacts 5a, 5b of the switch body 5 arranged near both sides of the hook 4 and pushes and expands the contacts 5a, 5b for further locking.
The contact pressure with the fastener 4 is maintained by the elastic force of b. 3a and 3b are cross-sectional views of the lid opening / closing interlocking switch device according to the present invention in a locked state as seen from the side and the front. It is shown that the contacts 5a and 5b are expanded and contacted.

From this locked state, when the hook 4 is rocked by a lock release knob of 6 against a biasing force against a spring or the like, the locking of the fastener 3 is released, and the lid can be opened. The contacts 5a and 5b are surely in a non-conducting state.

EFFECTS OF THE INVENTION As described above, according to the present invention, by using the fastener as the short-circuiting piece of the two contacts of the switch body, the non-conduction state of the switch due to the opening of the lid can be surely realized, and the two contacts of the switch body can be connected to the hook. By placing them near both sides, the hook will not inadvertently short the two contacts of the switch body as an obstacle between the two contacts, and the two contacts of the switch body will be perpendicular to the insertion of the fastener. Therefore, the contact pressure of the contact does not change even by the overstroke required for locking the lid, and a stable opening / closing interlock switch is realized, which maintains a stable contact state.

[Brief description of drawings]

FIG. 1 is an enlarged view of a main part of a lid opening / closing interlocking switch according to an embodiment of the present invention, FIG. 2 is a perspective view of a lid opening / closing interlocking switch according to an embodiment of the present invention, and FIGS. FIG. 4B is a sectional view of the same, and FIG. 4 is a perspective view of a conventional lid opening / closing interlocking switch. 1 ... Main body, 2 ... Lid, 3 ... Fastener, 4 ... Hook, 5 ... Switch.

Claims (1)

[Claims] 1. A fastener fixed to a lid, and a hook pivotally supported by a spring or the like on a main body for locking the fastener and holding the lid in a fully opened state. The switch main body is provided with two contacts near both sides of the hook, and the fastener fixed to the lid is engaged with the hook and short-circuits the two contacts of the switch main body at the same time. Lid opening / closing interlocking switch device.