JPH0581966A - Structure of pushbutton for elevator - Google Patents

Abstract

PURPOSE:To minimize the contact failure of a contact by the inclination of an operation button and the space for the contact by superposing two independent contacts, and connecting the respective contacts in parallel to each other. CONSTITUTION:An operation button 1 is vertically stroked by an elastic rubber body 3 provided on a button frame 2. A contact 4 is baked onto the rubber body 3, a contact 6 and a contact 7 are provided on an elastic plate 5 of a surface opposite to the contact 4, and a contact 9 is also provided on a printed board 8 of a surface opposite to the contact 7. When the button is pushed, the rubber body 3 is deflected, and when it is stroked, the contact 4 makes contact with the contact 6. When it is further stroked, the plate 5 is deflected, and the contact 7 makes contact with the contact 9. Thus, the contacts are parallel to each other, the contact reliability of the contacts is improved. The space for the contacts can be minimized because of the superposed structure of the contacts, and the button can be minimized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator hall call button and car destination button.

[0002]

2. Description of the Related Art In a conventional push button, as described in Japanese Patent Application No. 63-91426, contacts are independently provided on a printed board on the same surface. For this reason, when the end portion of the operation button is pushed, the operation button tilts so that the contact does not come into contact, or a space for the contact is required, which makes it difficult to reduce the size.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to achieve contact failure due to the tilt of the operation button, which has the drawbacks of the prior art described above, and to reduce the contact space.

[0004]

For the above purpose, a structure in which two independent contacts are stacked is provided.

[0005]

When the operation button of the present invention is pressed, the first contact and the second contact which are overlapped are brought into contact with each other. By connecting the respective contacts in parallel, the contact reliability of the contacts is improved and the space can be reduced.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is a front view of the push button, FIG. 2 is a cross-sectional view of the push button seen from the side, FIG. 3 is a detailed view of the contact, and FIG. 4 is an electric circuit diagram of the contact for the push button.

The operation button 1 is vertically stroked by an elastic rubber body 3 provided on the button frame 2. The contact point 4 is baked on the elastic rubber 3, the contact point 6 and the contact point 7 are provided on the elastic plate 5 on the surface facing the contact point 4, and the printed board 8 on the surface facing the contact point 7, A contact 9 was provided. The contacts 6, 7
Is composed of contacts 6 and 6A and contacts 7 and 7A as shown in FIG. 3, and its electric circuit is connected to the relay 10 by connecting contacts 7 and 7A in parallel to contacts 6 and 6A as shown in FIG. .

With this structure, when the operation button 1 is pushed, the elastic rubber 3 bends, and when the stroke is made, the contact 4 comes into contact with the contacts 6 and 6A. When the stroke is further extended, the plate 5 bends and the contacts 7 and 7A come into contact with the contacts 9. Therefore, since the contacts are in parallel, the contact reliability of the contacts is improved. In addition, the contacts are stacked, so that the contact space is small. Next, another embodiment will be described with reference to FIG. The operation button is supported by the spring 11, and the contact 4 is provided on the elastic plate 12, which is different from the previous embodiment, and the other configurations and effects are the same.

[0009]

The contact reliability of the contact is improved and the size can be reduced.

[Brief description of drawings]

FIG. 1 is a front view of a push button.

FIG. 2 is a cross-sectional view as seen from the side surface of FIG.

FIG. 3 is a detailed view of contacts.

FIG. 4 is an electric circuit diagram of a contact for a push button.

FIG. 5 is a cross-sectional view of a push button seen from a side surface according to another embodiment.

[Explanation of symbols]

 1 ... Operation button, 4, 6, 7, 9 ... Contact point, 5 ... Elastic plate.

Claims (1)

[Claims] 1. An elevator push button switch comprising an operation button, a button frame and a switch section, wherein a first contact and a second contact are superposed immediately below the operation button, and these contacts are independent of each other. Elevator push button characterized by.