JPH0231974Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a double-action seesaw switch used in zoom switches of VTR cameras, etc.

The conventional double action type switch is
Generally, a first contact point and a second contact point, which are arranged below the push button, are arranged concentrically, and both of these contact points are integrally formed of a rubber material or the like. Therefore, it is difficult to independently set the presence or absence of a click feeling, the operating force, and the amount of movement for each contact.

The purpose of this invention is to provide a double-action seesaw switch in which it is easy to individually set the presence or absence of a click feeling, operating force, and amount of movement for each contact, and which is also easy to manufacture and has low operating noise. It is in.

To achieve this objective, the double-action seesaw switch of this invention has the following structural features. That is, the first contact and the second
contacts are arranged in parallel from the center of rotation of the push button in the direction of its edge, and the pressing part of the first contact is made into a flexible pressing part, and this flexible pressing part is always pressed against the push button. On the other hand, the pressing portion of the second contact is a non-flexible pressing portion that can be brought into pressure contact with the push button when the push button swings.

Here, the first contact point and the second contact point can be integrally formed from a rubber material. In such a case, in order to make the pressing part of the first contact a flexible pressing part, it is formed into a thin tubular shape. Further, in order to make the pressing portion of the second contact inflexible, it is formed into a solid cylindrical shape.

According to the double-action seesaw switch of this invention having such a configuration, the first contact point;
Since the second contact point and the second contact point are arranged side by side from the center of rotation of the push button toward its edge, making each contact independent, it is possible to easily set the presence or absence of a click feeling, the operating force, and the amount of movement for each contact point. . Further, since the flexible pressing portion of the first contact is always pressed against the push button, it is possible to prevent the push button from shaking. Furthermore, if both contacts are integrally formed from a rubber material, manufacturing is easy and the operating noise can be extremely reduced.

An embodiment of this invention will be described below with reference to the drawings.

The push button 1 is swingable about the shaft 2 in the direction A-A'. On the bottom surface of push button 1, there is a
Protrusions 3a, 3b, 4a, in the direction of the edges 1a, 1b of
4b are provided in a protruding manner. First contacts 5, 6 and second contacts 7, 8 are provided below the push button 1 at positions where they can engage with the protrusions 3a, 3b, 4a, 4b, respectively. 6 and the second contacts 7, 8 are integrally formed of a rubber material.

Thin-walled tubular flexible pressing parts 5a, 6a are formed protruding from the upper parts of the first contacts 5, 6, and solid cylindrical non-flexible pressing parts are formed from the upper parts of the second contacts 7, 8. Portions 7a and 8a are formed to protrude. 5b, 6b,
7b and 8b are contact terminals attached to the lower portions of the first contacts 5 and 6 and the second contacts 7 and 8, respectively. The flexible pressing parts 5a, 6a of the first contacts 5, 6 have a higher total height than the non-flexible pressing parts 7a, 8a of the second contacts 7, 8, and The flexible pressing parts 5a and 6a are the protrusions 3 of the push button 1.
It is constantly in pressure contact with a and 3b.

The action will be explained below.

First, in a neutral state as shown in Figure 1,
The protrusions 3a and 3b of the push button 1 are provided with flexible pressing parts 5a,
Since the push button 6a is in pressure contact, the push button 1 does not rattle and can reliably maintain a neutral state. Protrusion 3a,
The amount of pressure applied to the flexible pressing portions 5a and 5b by the flexible pressing portion 3b is, for example, about 0.1 to 0.2 mm.

Next, when the push button 1 is swung by a certain angle in the A direction, the protrusion 3a pushes down the flexible pressing part 5a and the contact terminal 5b is turned on, as shown in FIG.
The amount of movement of the push button 1 at this time is, for example, about 0.8 to 1.0 mm.

Then, when the push button 1 is further swung in the direction A, the flexible pressing portion 5a is moved against the protrusion 3a, as shown in FIG.
As the protrusion 4a is pushed down and curved into a barrel shape, the inflexible pressing portion 7a of the protrusion 4a is pushed down, turning on the contact 7 with a click sensation. At this time, the distance that push button 1 has moved from the neutral state shown in the first diagram is, for example, 1.5
~2.0mm.

Note that in order to release the on state of the first contact 5 and the second contact 7, the push button 1 may be swung in the direction A'. In this case, contacts 6, 8 perform the same function as described above.

In addition, the connection parts 5c, 6 of each contact 5, 6, 7, 8
By appropriately setting the shapes of c, 7c, and 8c, when each contact 5, 6, 7, and 8 is pressed with push button 1,
By reversing the connecting portions 5c, 6c, 7c, and 8c, it is also possible to generate a click feeling at each contact point 5, 6, 7, and 8. Of course, it is also possible to prevent this from occurring.

As explained above, according to the double-action seesaw switch of this invention, since the first contact point and the second contact point are arranged side by side from the rotation center of the push button toward the edge thereof, each contact point can be made independent. Therefore, the presence or absence of a click feeling can be set for each contact, and the operating force can be set arbitrarily by setting the elastic force of the flexible pressing part, and furthermore, the amount of movement until the contact contacts can be individually set. This has the effect that it can be set to .

Furthermore, since the flexible pressing portion of the first contact is always pressed against the push button, there is an effect that the push button does not wobble in the neutral state.

Furthermore, if both contacts are integrally formed from a rubber material, manufacturing is easy and the operating noise can be extremely reduced, providing a double-action seesaw switch that is particularly suitable for VTR cameras, etc. Get the effect of being able to do something.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional end view of the double-action seesaw switch of this invention in a neutral state, Fig. 2 is a half-sectional view of the switch shown in Fig. 1 with only the first contact turned on, and Fig. 3 is a FIG. 6 is a half-sectional view of the switch shown in the first figure with the second contact also turned on; 1...Push button, 1a, 1b...Edge, 2...Shaft, 5, 6
...first contact, 5a, 6a...flexible pressing part, 7,
8... Second contact, 7a, 8a... Inflexible pressing part.

Claims (1)

[Claims for Utility Model Registration] (1) A push button is provided so as to be swingable about the center of rotation, and a first contact and a second contact are provided below the push button, which are turned on sequentially according to the swing angle of the push button. a double-action seesaw switch, wherein the first contact point and the second contact point are arranged side by side in a direction from the rotation center toward an edge of the push button,
The pressing part of the first contact is made into a flexible pressing part, the flexible pressing part is always pressed against the push button, and the pressing part of the second contact is made into a non-flexible pressing part. A double-action seesaw switch characterized in that a flexible pressing portion can be brought into pressure contact with the push button when the push button swings. (2) The first contact and the second contact are integrally formed of a rubber material, the pressing part of the first contact is formed into a thin tubular shape, and the second contact is formed into a solid cylindrical shape. Claims No. 1 for Utility Model Registration Formed in
Double action seesaw switch described in section.