JPH04326B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a push button switch used for power supply of electrical equipment, etc.

Conventional Structures and Their Problems Generally, push-button switches are used as power switches for electrical equipment, for example. This pushbutton switch operates by pressing the pushbutton to bring the movable contact into contact with the fixed contact and release it.In other words, there is no problem when turning the power on and off, but it is used to switch between two types of power supplies. For example, it is not possible to switch between a 60Hz power supply and a 50Hz power supply, or to switch and connect different voltage circuits. Therefore, in such cases, a separate changeover switch was provided in addition to the pushbutton switch;
The disadvantage is that the cost is high because each switch is required, and the wiring is complicated.

OBJECTS OF THE INVENTION The present invention takes into account the above-mentioned conventional problems, and aims to provide a push button switch that switches two circuits in addition to the normal on/off operation.

Structure of the Invention In order to achieve the above object, the present invention provides a plurality of movable contact portions at the movable end of a movable contact plate that is movable by a push button, and a plurality of fixed contact portions independently facing each of the movable contact portions. The switch is configured as a push button switch which is provided with a contact section and intermediary insulation that selectively intervenes between each movable contact section and a fixed contact section, and the push button switches each movable contact section and fixed contact section on. , and at the same time operate the intermediary insulating plate to selectively connect between each movable contact part and the fixed contact part, that is, to make a switching connection,
It is possible to perform an on/off switch and a changeover switch in one unit.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below based on the drawings.

In the figure, reference numeral 1 denotes a substrate, on one surface of which a movable contact plate 2 is fixed with rivets 3. The movable contact plate 2 has a movable end side formed into a bipedal shape and has first and second movable contact portions 4 and 5. First and second fixed contact portions 6 and 7 corresponding to the first and second movable contact portions 4 and 5 are independently fixed to the substrate 1 by rivets 8 and 9, respectively.

Further, a rotatable intermediary insulating plate 11 is attached to the surface of the substrate 1 by a pivot member 10, and a tip end 11a of this intermediary insulating plate 11 is connected to the intermediary insulating plate 11.
By rotating the first movable contact part 4 and the first
It is designed to selectively intervene between the fixed contact portions 6 and between the second movable contact portion 5 and the second fixed contact portion 7.

The first and second movable contact portions 4 and 5 and the first and second fixed contact portions 6 and 7 are provided with an intervention guide on their inner edges so as not to obstruct the intervention of the intermediary insulating plate 11. Bent pieces 4a, 5a and 6a,
7a is formed. A push button (not shown) is provided on the other side of the substrate 1, and the push button 12 is provided so as to be able to press the movable contact plate 2 through the hole 13 of the substrate 1.

In the above configuration, by operating the push button, the movable contact plate 2 is moved to the first and second fixed contact portions 6, 7.
In other words, the switch is brought into contact with and released from the switch, thereby causing the switch to turn on and off. On the other hand, the intermediate insulating plate 11 connects the first movable contact part 4 and the first movable contact part 4 by its rotation.
In other words, the movable It functions as a changeover switch that switches between two different power supplies or circuits connected to the first fixed contact part 6 and the second fixed contact part 7 to the contact plate 2.

As described above, the push button switch of this embodiment allows normal on/off operations and switching connection of two different types of power sources or circuits. Furthermore, it can be easily constructed by adding one intermediary insulating plate to the push button switch, and is more cost-effective than the conventional one in which two switches are provided, and there is no need for duplicate wiring.

Note that in the above embodiment, the movable contact plate is bilimb-shaped so as to switch and connect two power sources, etc., but it can be made into three or more limbs, and the intermediary insulating plate is also wide. Different power supplies, circuits, etc. may be switched and connected.

Effects of the Invention As is clear from the description of the above embodiments, the push button switch according to the present invention has two functions of an on/off switch and a changeover switch with a single mechanism, and is easy to use. It is also a simple addition of an intermediary insulating plate, and is of great value.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a push button switch according to an embodiment of the present invention, FIG. 2 is a perspective view of the same, and FIG. 3 is a perspective view of the same essential parts. DESCRIPTION OF SYMBOLS 1... Board, 2... Movable contact plate, 4... First movable contact part, 5... Second movable contact part, 6... First fixed contact part, 7... Second fixed contact part Part, 11
...Intermediate insulating board.

Claims (1)

[Scope of Claims] 1. A movable contact plate that is movable by push button operation and has a plurality of movable contact portions at its movable end, and a plurality of independent fixed contact portions facing each of the movable contact portions, respectively; A push button switch comprising an intermediate insulating plate selectively interposed between the plurality of movable contact parts and the fixed contact part. 2. The push button switch according to claim 1, wherein the movable contact portion and the fixed contact portion have bent pieces on the edges of their plates for guiding the intervention of the intermediary insulating plate.