JPS5837930B2 - swinging switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mercury switch element, and more specifically, to a mercury switch element suitable for a switch element of an input key switch attached to a communication terminal device or a switch element of an electromagnetic relay used in a control device, etc. .

A switch element using mercury, which is used in a conventional relay or the like, has a structure in which an armature covered with mercury and a lead piece covered with mercury are brought into close contact by an external magnetic field.

Therefore, when such conductors are not covered with a mercury film, the contact cannot be maintained well, and undesirable operations such as chattering due to so-called poor wetting with mercury may occur.

An object of the present invention is to provide a mercury switch element with a new structure that is free from the above-mentioned undesirable operation and can be expected to have a wide range of applications.

In order to achieve such an object, the mercury switch element according to the present invention includes a fixed mercury pool, a moving mercury pool, and a mercury switch element that contacts mercury in the moving mercury pool and is capable of contacting the fixed mercury pool. A movable electrode is provided, a magnetic force-sensitive magnetic body is provided in the movable mercury pool in order to make the movable mercury pool movable in response to an external magnetic force, and a magnetic body that is in contact with the mercury in the fixed mercury pool. The movable mercury pool includes a first fixed electrode located at a fixed position and a second fixed electrode provided at a fixed position so as to be in contact with mercury in the moving mercury pool.

The mercury switch according to the present invention configured as described above is
Since switching is performed by contact between the mercury in the mercury pool and the electrode, the problems with conventional switches, such as chatter that occurs when electrodes come into contact with each other, and instability of contact resistance due to insufficient mercury wetting on the electrode surface, etc., are completely eliminated. removed, the purpose of the invention is fully achieved.

The present invention will be explained in more detail below with reference to the drawings.

1 and 2 are longitudinal cross-sectional views of a mercury switch according to the invention, with FIG. 1 showing the switch in an open state and FIG. 2 showing it in a closed state.

A fixed mercury pool 2 is provided at the bottom of the sealed container 1, a fixed electrode 9 is provided in the mercury pool 2, and the fixed mercury pool 2 is filled with mercury 4.

A movable mercury pool is arranged above the fixed mercury pool 2 so as to be movable in the vertical direction.

The moving mercury pool is composed of a cylindrical magnetic member 5 on the outer peripheral wall and a bottom member 6 integrally molded with the cylindrical magnetic member 5.

A movable electrode 7 is inserted through the center of the bottom member 6.

A fixed electrode 3 is fixed to the upper side of the container 1.

In this embodiment, the fixed electrode 3 is supported so as to be in contact with the mercury 8 in the container within the movable range of the moving mercury pool.

A permanent magnet 10 is provided on the outside of the sealed container 1 so as to be movable up and down.

The movable mercury pool including the magnetic member 5 acts as an armature that moves by external magnetic action, and in this embodiment, the movable mercury pool moves following the change in the position of the permanent magnet 10.

When the permanent magnet 10 is moved downward from the position shown in FIG. 1, the movable pool also moves downward and the movable electrode 7 7a is inserted into the mercury of the fixed mercury pool 3 as shown in FIG.

As a result, fixed electrodes 3 and 9 are electrically connected.

When the permanent magnet 10 is moved upward, the movable pool also moves upward, and the movable electrode section 7a separates from the mercury 4 in the fixed mercury pool 2 and returns to the position shown in FIG.

Regarding the mercury switch according to the present invention described in detail above,
Further modifications may be made within the scope of the invention.

Although a permanent magnet has been shown as an example of an element that applies a magnetic field from the outside, it is also possible to generate a magnetic field using a coil and use it as a relay.

In addition, it can be widely applied as a variety of switches, and can be expected to have a wide range of uses, such as connecting a permanent magnet to an operating section and using it as an input key switch.

The scope of the present invention extends to all of the claims, including the above-mentioned modifications.

[Brief explanation of the drawing]

1 and 2 are longitudinal sectional views showing an embodiment of a mercury switch according to the present invention. 1... Sealed container, 2... Fixed mercury pool, 3...
Second fixed electrode, 4, 8... Mercury, 5... Magnetic member, 6... Armature, 7... Moving electrode, 9... First fixed electrode, 10... Permanent magnet.

Claims (1)

[Claims] 1. A fixed mercury pool, a moving mercury pool, a moving electrode provided in the moving mercury pool so as to be able to contact the fixed mercury pool, and a moving electrode that is sensitive to external magnetic force. a magnetic force-sensitive magnetic body provided in the movable mercury pool to make the movable mercury pool movable; a first fixed electrode in contact with the mercury in the fixed mercury pool; A mercury switch comprising a second fixed electrode provided at a fixed position so as to be in contact with the second fixed electrode.