JPH0231969Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sliding type switch device in which a movable contact slides relative to a fixed contact.

In order to downsize the switch, a configuration has been proposed in which a through hole is provided in the movable contact, the movable contact is provided at one open end of the through hole, a moderation member is provided at the other open end, and a compression coil spring is placed between the two. It is being However, if the elastic force of the compression coil spring is set to provide an appropriate sense of moderation, the contact pressure will be too large, causing premature wear. If the contact pressure is obtained, there is a drawback that a sufficient sense of moderation in operation cannot be obtained.

The present invention has been developed in view of the above-mentioned circumstances, and its purpose is to provide a switch device that provides an appropriate sense of moderation and appropriate contact pressure, and is suitable for downsizing.

An embodiment of the present invention will be described below with reference to the drawings. 1 is a main body of a switch case, one side of which is open, and three engaging pawls 2 protruding from the periphery of the open side. 3 is an insulator,
An engaging pawl 2 is engaged and fixed to one side of the switch case main body 1, and three fixed contacts 4 to 6 are provided on this. Reference numeral 7 designates a movable contact holder provided with a wave-shaped operation part 7a, and a shaft part 7b (only one shown) protruding from both sides is connected to the hole 3a of the insulator 3 and the switch case main body 1.
They are rotatably inserted into holes (not shown) provided on the other side. Reference numeral 8 denotes a stepped through hole provided in the movable contact holder 7, through which the fixed contacts 4 to 6 are inserted.
The end portion corresponding to the diameter is small in diameter, and a stepped portion 8a is provided in the middle. Reference numeral 9 denotes a movable contact, with a slit-shaped holding hole 10 formed at both ends sandwiching the through hole 8;
10, and is arranged so as to face the small diameter open end of the through hole 8. The movable contact 9 is always in sliding contact with the fixed contact 4, and selectively comes into sliding contact with the fixed contacts 5 and 6 when the movable contact holder 7 is rotated. 11 is a ball as a moderation member, which is inserted into the large diameter portion 8b of the through hole 8;
It is arranged at the open end of the through hole 8 having a large diameter. The other side of the switch case main body 1 has three recesses 12 to 1 facing the ball 11.
4 are provided. Reference numeral 15 designates a first compression coil spring with a small diameter, which is disposed within the through hole 8 and is located between the movable contact 9 and the ball 11. 1
Reference numeral 6 denotes a second compression coil spring with a large diameter, which is also placed in the through hole 8, and is placed between the step portion 8a and the ball 11.

Next, the operation of the above configuration will be explained.

When the movable contact holder 7 is in the neutral position, the ball 11 is engaged in the recess 13, and the movable contact 9 is in contact only with the fixed contact 4. and,
When the movable contact holder 7 is rotated from the neutral position in the direction of arrow A, the ball 11 engages with the recess 12 and the movable contact 9 comes into contact with the fixed contacts 4 and 5 at the same time, and the movable contact holder 7 is rotated from the neutral position in the direction of arrow B, the ball 11 engages with the recess 14 and the movable contact 9 comes into contact with the fixed contacts 4 and 6 at the same time.

The spring force of the first compression coil spring 15 is determined so as to provide an appropriate contact pressure to the movable contact 9. Further, the second compression coil spring 16 cooperates with the first compression coil spring 15 to apply a spring force to the ball 11 so as to provide an appropriate sense of moderation. Therefore, since only the spring force of the first compression coil spring 15 acts on the movable contact 9, it will not wear out prematurely.
A good sense of moderation can also be obtained in the rotation of the movable contact holder 7. Then, the first and second
Since the spring forces of the compression coil springs 15 and 16 can be applied simultaneously, a sufficient elastic force can be applied in a small space.
Since the second compression coil springs 15 and 16 are housed in one through hole 8, the movable contact holder 7 is smaller than the case where these are provided separately.
Since the planar space of the switch is small, it is suitable for downsizing the entire switch.

As is clear from the above description, the present invention can provide a switch device that provides an appropriate sense of moderation, provides appropriate contact pressure, and is suitable for downsizing.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a side view with the insulator removed, FIG. 2 is a plan view of the insulator, and FIG. 3 is a main part taken along the line - in FIG. 1. FIG. In the drawing, 3 is an insulator, 4 to 6 are fixed contacts, 7 is a movable contact holder, 8 is a through hole, 8a is a step, 9 is a movable contact, 11 is a ball (moderation member), 12 to 14 are recesses, 15 16 is a first compression coil spring, and 16 is a second compression coil spring.

Claims (1)

[Scope of utility model registration request] a stepped through hole that passes through the movable contact holder; a movable contact that is placed opposite the small diameter open end of the through hole and makes sliding contact with the fixed contact; and a movable contact that is placed at the large diameter open end of the through hole. a moderation member facing the moderation uneven portion; a first compression coil spring with a small diameter disposed within the through hole and located between the movable contact and the moderation member; and a first compression coil spring disposed within the through hole. A switch device comprising a second large-diameter compression coil spring located between the stepped portion of the through hole and the moderation member.