JPS62295319A - Push button switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention Field of Industrial Application The present invention relates to a push button switch device applied to operation switches of electrical equipment.

BACKGROUND OF THE INVENTION Conventionally, many push button switch devices used as operating switches for electrical equipment utilize rubber switches that have a short operating stroke and are comfortable to operate. A push button switch device using a rubber switch has a deep operating stroke, and may not operate unless the operating force is increased at the final push.

A conventional push button switch device will be explained below. 6th
The figure is a side view showing a conventional push button switch device.
1 is a cabinet for electrical equipment; 2 is a bearing piece integrally formed on the inner surface of the cabinet 1; a fitting hole 4 for inserting and fixing a support shaft 3 is provided near the tip of the bearing piece; 5
1 is a push button main body, and a rotating protrusion 6 into which the support shaft 3 is rotatably fitted is integrally formed in the center thereof. Therefore, the push button body 6 is rotatably supported by the cabinet 1 via the support shaft 3. In addition, the push button body 5 has a support 11+
Suppressing pins 9 are integrally formed on both sides of center point 3, and are in constant contact with the pressing surfaces of rubber slits 7, which will be described later. Reference numeral 10 denotes a printed wiring board located below the push button body 5, on which a rubber switch 7 is disposed corresponding to the press bottle 9. Rubber switch 7 on printed wiring board 1o
The groove is formed by an elastically deformable cup-shaped rubber rubber 8, a movable point 11 embedded in the rubber rubber 8, and a fixed contact 12 placed on the printed wiring board 1o opposite to the movable contact 11. There is. The movable contact 11 of the rubber switch ff7 is made of conductive rubber.

One of the conventional push button switch devices constructed as described above will be described below.

First, when one side of the push button body 5 is pressed, the pressing side is lowered around the support shaft 3. At the same time, the pressing pin 9 pushes down the rubber rubber 8 of the rubber switch 7, and the movable contact 11 contacts the fixed contact 12 on the printed wiring board 1o, thereby allowing the switch to pass.

Problems to be Solved by the Invention However, in the above-mentioned conventional configuration (as shown in FIG. The pressing surface of the rubber rubber 8 of the rubber switch 7 must be connected to the printed wiring board 1o.
Do not press too hard against the object. For this reason, the movable contact 11 does not come into close contact with the fixed contact 12, and the electrical equipment often does not operate. In order to bring this into close contact, it is necessary to press the push button body 6 with even stronger force.

As described above, the conventional configuration has problems such as poor operation, poor feel due to large operating force, and large operating stroke.

The present invention solves the above-mentioned conventional problems, and aims to provide a push button switch device that can reduce malfunctions and also realize a thinner structure.

Means for Solving the Problems In order to achieve this object, the push button switch device of the present invention supports the push button body with an outsourced member so as to elastically bias it toward the cabinet, and is constructed integrally with the push button body. The feature is that a gap smaller than the stroke of the rubber switch is provided between the tip of the lip or pin, which serves as a rotation fulcrum, and the printed wiring board.

With this configuration, the push button body descends to the printed wiring board when the push button body is pressed, and the movable contacts in the rubber of the rubber switch and the fixed contacts on the printed wiring board are likely to come into close contact with each other. In addition to reducing defects, the operating feel is improved because the operating force is reduced. Also,
Since the operating stroke can be made smaller, the structure can be made thinner.

EXAMPLE Hereinafter, one embodiment Fj of the present invention will be described with reference to the drawings.

1 and 2 show an embodiment of the present invention,
21 is a cabinet, and 22 is a push button body, which is always urged to the outside of the cabinet 21 by a subcontracted member 23 whose one end is fixed to the cabinet 21. In addition, the push button body 22
A bottle 25 is integrally formed in the center of the bottle 25, the tip of which serves as a rotational fulcrum for movement. 26 is a printed circuit board; 27 is a rubber switch sunk into the printed circuit board 26; 1 placed on the board
A groove is formed at the constant contact point 3o. The tip of the pin 26 of the push button body 22 is semicircular to serve as a rotational fulcrum, and in a stationary state, a rubber switch 27 is placed between it and the printed wiring board 26.
The gap is kept smaller than the stroke of .

The operation of the push-button switch device constructed as described above will be described below.

In FIG. 3, when the push button body 22 is first pressed, the tip of the pin 26 of the push button body 22, which is the pivot point, is lowered by the gap between it and the printed wiring board 26 facing it, and the push button body 22 is lowered as a whole. . At the same time, rubber switch 27
is also pushed down by the push button body 22, but the push button body 2
2 is completely lowered, the movable contact 29 of the rubber switch 27 is lowered parallel to the printed wiring board 26. At this point, the gap between the tip of the pin 25, which serves as a rotation fulcrum, and the printed wiring board 26 must be less than the stroke of the rubber switch 27.
0 has not made contact yet. When the push button body 22 is further pressed, the push button body 22 rotates around the tip of the pin 26 which serves as a pivot point, as shown in FIG. 4, and as a result, the movable contact 29 and the fixed contact 30 come into close contact. .

As described above, according to this embodiment, most of the stroke of the rubber switch 27 is achieved by the parallel movement of the push button body 22, so that the stroke caused by the rotation of the push button body 22 can be reduced.
The inclination of the movable contact 29 of the rubber switch 27 with respect to the fixed contact 30 is reduced.

This makes it easier for them to come into close contact with each other, reducing malfunctions and reducing operating force. Moreover, the operating stroke can also be reduced.

Effects of the Invention The present invention employs a structure in which the push button body is always biased and supported by an elastic member to the outside of the cabinet, and the rotation fulcrum of the push button body is separated from the entire printed wiring board, thereby reducing the stroke of the rubber switch when the push button body is depressed. By moving the button body in parallel, the remaining stroke can be made into a rotational operation, so the rotational stroke itself is small, and for this reason, the movable contact of the rubber switch and the fixed contact of the printed wiring board are almost parallel to each other. , it becomes easier to adhere. As a result, malfunctions are reduced and the operating force can be reduced.

Furthermore, since the operation stroke can be reduced, the structure can be made thinner, and a push button switch device with excellent operation feel can be realized.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing the installation state of a push button switch device in an embodiment of the present invention, Fig. 2 is a perspective view of a device using the same device, and Figs. 3 and 4 are operations of the same device. FIG. 6 is a cross-sectional view showing the conventional push button switch device, and FIG. 6 is a cross-sectional view showing the operating state of the device. 21... Cabinet, 22. ...Push button body, 23...Elastic member, 26...Pin, 27...Rubber switch, 29...
Movable contact, 3o...Fixed contact. Name of agent: Patent attorney Toshio Nakao and 1 other person21
-Ki ψpifuzuto JO-Goujobinjio'WJ2 Figure 5 Figure 6

Claims (1)

[Claims] A push button body that is arranged in a hole provided in a cabinet so as to be able to see-saw movement with a margin between the hole and the hole, and that has an integrally formed rib or pin that serves as a fulcrum for the seesaw movement, and the push button body is placed outside the cabinet. A rubber switch comprising: an elastic member that is constantly biased; a printed wiring board located below the push button body; and a rubber switch disposed on the printed wiring board, with conductive rubber disposed at a position facing the contacts on the printed wiring board. A push button switch device, characterized in that a gap smaller than the stroke of the rubber switch is provided between the rib of the push button body or the tip fulcrum of the pin and the periphery of the rubber switch or the printed wiring board.