JPS61179019A - Push 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 FIELD OF THE INVENTION The present invention relates to a push switch used in a manual key operation section of an operating section of an electronic device.

BACKGROUND OF THE INVENTION In recent years, with the demand for lower prices of electronic devices, there has been a demand for lower priced and highly reliable switches. For example, as shown in FIG. 6, a contact 6 is placed on an insulating substrate 7 having contacts 6a and 6b.
b, an insulating spacer 6 for insulating the diaphragm 4, an anti-slip spacer 12 for preventing the diaphragm 4 from shifting laterally, and a diaphragm 4 housed in the opening of the anti-slip spacer 12; diaphragm 4
It consisted of an insulating sheet 2 that protects the body, and a movable part 1 that moves up and down above the insulating sheet 2.

Problems to be Solved by the Invention However, in the above configuration, an insulating spacer 6 that insulates the contact 6b and the diaphragm 4, and a displacement prevention spacer 12 that prevents the diaphragm 4 from being displaced are required, which requires a large number of man-hours for reeding and bonding. , the material cost is expensive, and furthermore, if the position at which the movable part 1 presses down on the diaphragm 4 is shifted,
The pressing force and filling were changing.

The present invention eliminates the above-mentioned conventional drawbacks and provides a push switch that is easy to assemble and has an excellent feel.

Means for Solving the Problems In order to solve the above problems, in the present invention, the slip-preventing spacer and the insulation spacer are also used as a protective film, and furthermore, guide dowels for movable parts, pressure transmission dowels, etc. are added to the protective film. It is configured to do this.

Function: With the above configuration, the diaphragm is held by the convexly formed insulating film, reducing the number of parts.
Production costs are lower. Furthermore, by adding a push dowel or cushion to the diaphragm, the operation of the diaphragm becomes stable and stable operating force can be obtained. 'Examples Examples of the present invention will be described below with reference to FIGS. 1 to 4 of the drawings.

First, in FIG. 1, an insulating spacer 6 for insulating the diaphragm 4 and the contact 6b is pasted on an insulating substrate T having contacts sa and eb, the diaphragm 4 is placed on top of the insulating spacer 6, and the diaphragm 4 is formed into a convex shape so as to cover the diaphragm 4. The protective film 2 is attached to the insulating spacer 6, and the protective film 2 is provided with a guide dowel 3 for preventing displacement, and the guide dowel 3 is inserted into a hole 11 provided on the lower surface of the movable part 1.
It has a structure in which the movable part 1 is guided to the center of the diaphragm 4 by being incorporated into the diaphragm 4.

In FIG. 2, a tongue piece 8 is formed in place of the insulating spacer S in FIG. It is a structure.

In FIG. 3, insulation between the diaphragm 4 and the contact 6b is formed using an insulating printed spacer, and a pressure transmitting dowel 10 is placed on the protective film 2 so that even if the movable part 1 is flat, pressure is applied only to the center of the diaphragm 4. Further, in order to facilitate vertical movement of the convex portion of the protective film 2 into which the diaphragm 4 is inserted, a cushion 11 is formed.

FIG. 4 shows that in the present invention, a contact point 6 is formed on the protective sheet 2 so as to face the contact point 6b on the insulating substrate 7. When the contacts 61L and 6b are formed on the same sheet, the contact point 8&, 6b are bent to face each other, and the insulating spacer 6 and diaphragm 4 are sandwiched between them.

Effects of the Invention As described above, according to the present invention, by forming a convex portion on the protective film to hold the diaphragm, an insulating spacer and a displacement prevention spacer are not required, and a push switch can be constructed at low cost. . Furthermore, by adding a guide dowel or a pressure transmitting dowel and pressing down on the center of the diaphragm, stable pressing force and pressing feeling can be obtained.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing the configuration of a push switch according to one embodiment of the present invention, FIG. 2 is an exploded perspective view of another embodiment, and FIG. 3 is an exploded perspective view when a pressure transmission dowel is added. Fourth
Figures a and b are an exploded perspective view and a sectional view when contacts are arranged on a protective sheet and an insulating substrate, and Figure 5 is an exploded perspective view showing a conventional example. 1...Movable part, 2...Protective film,
3...Guide dowel, 4...Diaphragm, 5...Insulating spacer, 6...Contact, 7...Insulating substrate, 8... ...tongue piece, 9
・・・・・・Insulating printing spacer, 10：・・・Press transmission dowel, 11：・・・Cutshicon, 12：・・・
...Slip prevention spacer. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4

Claims (3)

[Claims] (1) It has a structure in which a diaphragm is inserted inside an insulating film on which a convex portion is formed, and this is pasted on an insulating substrate, and the diaphragm is positioned by the convex portion of the insulating film. A push switch featuring (2) Claim 1 in which a tongue piece is added to the convex part of the insulating film for the purpose of insulating the diaphragm and the contact lead.
Push switch as described in section. (3) Adding a concave portion that transmits a pushing force to the diaphragm or a convex portion that guides the movable part to the top of the convex portion of the insulating film,
The push switch according to claim 1, further comprising a cushion added to the edge of the convex portion of the insulating film.