JPH0326581Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a switch spring used for positioning and switching moderation in a switch.

[Summary of the idea]

The present invention changes the switching torque on the switch-on side and the switch-off side by making the elastic force of the spring asymmetrical in the switch spring.

[Conventional technology]

In the conventional switch spring structure, the switching torque on the switch-on side and the switch-off side is the same.

[Problem that the invention attempts to solve]

With the conventional structure, if an emergency occurs when using a machine or equipment that uses a switch with this structure, the switching torque of the switch is large, so it is difficult to quickly turn off the switch and stop the machine or equipment. The problem was that it was difficult.

The present invention solves these problems and provides a switch that allows the switch-on side to receive a firm response and the switch-off side to perform quickly.

[Means to solve the problem]

The switch spring of the present invention is characterized in that the elastic force of the spring is asymmetric.

〔Example〕

An embodiment of the present invention will be described with reference to FIG.

1 in Figure 1. Switch spring A, 2. Switch spring B is 3. Combined with the groove in the CW direction,
By rotating in the CCW direction, elastic force is generated and switching torque is obtained. (1. Switch spring A is thicker and more elastic than 2. Switch spring B.) Now, considering the case of rotation in the CW direction, 1. A force F acts on the switch spring A to prevent it from rotating. When rotating in the CCW direction, a similar force acts on the two switch springs B.

Here, 1. The elastic force of switch spring A is made larger than the elastic force of two switch springs B. In other words,
In this example, 1. If switch spring A is made thicker than switch spring B, the torque when turned in the CW direction will be greater than the torque when turned in the CCW direction.

Applying the above principle, if the CW direction is the switch-on direction and the CCW direction is the switch-off direction, then
It is possible to provide a switch with different switching torques on the switch-on side and switch-off side.

[Effect of idea]

In the present invention, when the switch spring A rotates in the CW direction (toward the tip of the switch spring A), a force F acts on the switch spring A to prevent the switch spring from rotating, thereby preventing the switch spring from rotating. Also, when rotating in the CCW direction (direction of the root of switch spring B), a force F acts on switch spring B to prevent it from rotating. Since the downward force acting on switch spring A is greater than the force F acting on switch spring B, the torque of rotation in the CW direction is
The torque is greater than the rotation torque in the CCW direction.

Therefore, if rotation in the CW direction is used as a switch-on and rotation in the CCW direction is used as a switch-off, the torque of the switch will increase.

Therefore, when the switch is turned on, a firm response can be obtained, so that it can be confirmed with certainty that the switch has been turned on.

In addition, since the switch can be turned off quickly in the event of an emergency, it will not be possible to turn off the switch reliably and cause a major accident due to the machine or equipment not being able to stop, which improves safety. This makes it possible to provide an excellent switch spring. Furthermore, the rotating torque in the CW direction and the CCW direction can be changed with a simple configuration of changing the arm thickness of switch spring A and switch spring B without requiring any special mechanism, which reduces the cost and size of switch springs. This made it possible to create a space.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the present invention. 1... Switch spring A, 2... Switch spring B, 3... Groove, F... Force acting on switch spring A.

Claims (1)

[Scope of Claim for Utility Model Registration] In a switch spring that has a circular engagement part on its outer periphery in order to obtain switching moderation by engaging with a groove provided in an engaged member, the outer part of the member is substantially circular in outer shape. A switch spring A in which two arm portions are integrally formed with their tips extending along the periphery to opposite positions, and the tip portions of the arm portions are provided with an engaging portion that engages with a groove in the case.
and a switch spring B, wherein the arm of the switch spring A is thicker than the arm of the switch spring B so that the elastic force of the switch spring A is greater than the elastic force of the switch spring B. .