JPS58893Y2 - Micro switch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an actuator that pushes a plunger in a microswitch.

Conventionally, microswitches have generally been put into practical use, as shown in FIG. 1A, in which an actuator 1 is formed by a single lever and is adapted to push a plunger 2.

In the above-mentioned microswitch, the stroke of the plunger 2 corresponds to the amount of movement of the actuator 1, so the range of movement amount is limited, and delicate adjustments are required at the time of installation.

Also, depending on the installation of the actuator 1, the plunger 2 must be pushed until it comes into contact with the main body 3, as shown in Figure 1, which may lead to so-called bottom pressing, which shortens the life of the microswitch. was there.

This invention was devised in view of the above circumstances, and its purpose is to make it easy to install and adjust the actuator, not to place an undue burden on the microswitch itself, to make it inexpensive, and to obtain excellent operating characteristics. The present invention aims to provide a microswitch device.

An embodiment of the present invention is shown below in Figures 2 a, l), c and 3.
This will be explained based on figures a, l) and c.

In the figure, 11 is the main body of the macro switch, 12 is a fixing plate attached in contact with one side of the main body 11, and one end of this fixing plate 12 is formed to protrude above the main body 11,
Moreover, the pin 13 is fixed.

Reference numeral 14 denotes an actuator consisting of levers 15 and 16, and one end of the actuator 14 is fitted onto the pin 13 so as to be able to freely move in temperature.

Note that 17 is a plunger, and 18 is a retaining ring for preventing the actuator fitted onto the pin 13 from falling off.

Next, the operation of the present invention based on the above configuration will be explained.

First, FIG. 3a shows the state before operating the microswitch. From this state, as shown in FIG. 3, when an external force is applied in the direction of the arrow to one lever 15 of the actuator 14, one end of the lever The portion 16a protruding from the other lever 16 with which the two portions overlap protects the plunger 17 from coming into contact with the main body 11 and pushing the plunger 17 to the bottom.

Therefore, as shown in FIG. 3C, when the lever 15 is further pushed down, the elasticity of the lever 15 causes the other lever 16 to
It will be bent until it touches the.

That is, while in the conventional microswitch, the actuator 1 can only operate up to the position shown in FIG. 1, the actuator 14 of the present invention can further increase the amount of operation.

As described above, by using the actuator 14 of the present invention, installation and adjustment are easier than with conventional microswitches, and it is also possible to prevent the plunger 17 from being pushed to the bottom.

In addition, in one embodiment of the present invention, the actuator is formed of an elastic member in the form of a leaf spring, but the actuator is not necessarily limited to this. For example, a roller may be attached to the tip of the actuator. Similar objectives can be achieved.

In short, it goes without saying that the present invention can be modified in various ways without changing the gist.

As explained above, the present invention has a fulcrum close to the microswitch, a rigid lever that swings around the fulcrum, and an actuator made by partially overlapping a highly elastic lever to push down the plunger. It is characterized by being made to do.

Therefore, it is easy to install and adjust the microswitch, and there is no need to press the bottom of the plunger, making it inexpensive.
Moreover, it has practical effects such as being able to improve reliability.

[Brief explanation of drawings]

Fig. 1 a, l) shows a conventional microswitch device, a is a perspective view, b is a front view showing the operating state, and Fig. 2 a, b, c is an embodiment of the present invention. A is a perspective view of the microswitch device, B is a front view thereof, C is a plan view thereof, and FIG. 3A is a microswitch device. B and C are diagrams illustrating the operating sequence of a microswitch device according to an embodiment of the present invention. 11... Body of microswitch, 13...
... Pin, 15 ... Lever (first lever), 1
6... Lever (second lever), ■...
Actuator, 16a...Protruding part (protrusion)
, 17...Plunger.

Claims (1)

[Scope of utility model registration request] The main body of the microswitch has a plunger, a highly elastic first lever that is provided spaced apart from the plunger and has one end pivotably supported and the other end swingable; A rigid second lever whose end swings together with the second lever to press the plunger, and a protrusion provided on the second lever to restrict the swing range of the second lever. Characteristic microswitch device.