JPH08167343A - Switch - Google Patents

Abstract

PURPOSE: To obtain a switch with its limit and reducible cost used for commercially available electronic devices, etc. CONSTITUTION: A contact piece 4 is formed by means of a limit spring part 4a pressure welded to a cam mount 1b provided with spring capability and made of a conductive metal, a plate spring part 4b, one of which is bonded to a limit spring part 4a via a slit, and a contact piece part 4c brought into contact with a fixed contact point 1a on the bottom of a case 1 for conductivity. Even in a material of the same thickness, the contact piece part 4c realizes low load and elastic performance by influence of distortion and deflection of the plate spring part 4b in addition to its deflection, and a switch with its reducible cost and limit is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch mainly used in consumer electronic devices and the like.

[0002]

2. Description of the Related Art A conventional switch will be described below.

FIG. 7 is a perspective view of a conventional switch, and FIG. 8 is an exploded perspective view of FIG. In the figure, 21 is a cover, 22 is a lever, 23 is a case having a plurality of fixed contacts 22b, 24 is a moderation spring made of a spring material, and 25 is a contact piece made of a conductive spring material.

The operation of the slide switch configured as described above will be described with reference to FIG.

First, by operating the lever 22,
A moderation spring 24 in which the cam crest 22a formed on the lever 22 is attached to the cover 21 and is pressed against the cam crest 22a.
Overcomes and gives a sense of moderation. At this time, by operating the lever 22, the contact piece 25 attached to the lever 22 comes into contact with another fixed contact in the case 23 to switch the switch.

[0006]

However, in the above-mentioned conventional structure, the low load / elasticity performance required for the contact piece and the high load / rigidity performance required for the moderation spring are contradictory, so that they are formed as separate members. It was necessary and was a bottleneck in reducing the number of parts.

The present invention solves the above-mentioned problems of the prior art, and an object of the present invention is to provide a switch which is made of a material having the same material thickness and has the above-mentioned two functions, which is low in cost and easy to assemble.

[0008]

In order to achieve this object, in the switch of the present invention, a contact piece is made of a conductive metal, and a part thereof is connected to the moderation spring part through a slit. It is composed of a leaf spring portion and a contact piece portion connected to the leaf spring portion and brought into contact with a fixed contact at the bottom of the case for electrical conduction.

[0009]

With this structure, the moderation spring part can have a high load and rigidity performance with the material of the same material thickness, and the contact piece part is affected by the deflection of the contact piece part, the deflection of the leaf spring part and the twisting. The contact piece can have the low load and elasticity required, and the conventional detent spring and the contact piece can be integrated to reduce the number of parts.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the switch of the present invention is shown in FIG.
This will be described with reference to FIG. In FIG. 1, reference numeral 1 is a case made of an insulating material and having a plurality of fixed contacts 1a and cam lobes 1b on its bottom side. A lever composed of a body 2b, a cover 3 for covering the opening of the case 1, and a moderation spring part 4a made of a conductive metal having a spring property and attached to the slider 2a and pressed against the cam crest 1b. 2 of the fixed contact 1a which has a leaf spring portion 4b which is connected to the moderation spring portion 4a through a slit and which is also connected to the leaf spring portion 4b.
It is a contact piece having a contact piece portion 4c that is in sliding contact with at least one place and is in conduction.

The operation of the switch configured as described above will be described with reference to FIG. First, lever 2
By operating the operation body 2b, the moderation spring portion 4a, which is pressed against the cam crest 1b in the case 1 and attached to the slider 2a, rides over the cam crest 1b and gives a feeling of moderation. At this time, the contact piece 4c, which is also attached to the slider 2a and is in contact with the fixed contact 1a at the bottom of the case 1, has its own deflection, and the leaf spring 4b is connected to the moderation spring 4a via the slit. Because of the twisting and twisting, it is possible to obtain the same low load elastic performance as the conventional contact piece while using the same material thickness as the moderation spring part.

According to the present embodiment as described above, the contact piece 4
Is a switch that is easy to incorporate at low cost because it is possible to compose a moderation spring and contact piece with different material thicknesses and different material thicknesses by using the same material by providing a leaf spring part and satisfy each characteristic. Can be provided.

Another embodiment of the present invention will be described below with reference to FIGS. Since the structure is basically the same as that of the embodiment shown in FIG. 1, the same components will be denoted by the same reference numerals and detailed description will be omitted. In the figure, the difference from the embodiment of FIG. 1 is that a narrow portion 4d is provided substantially in the center between the central portion 4f of the leaf spring portion 4b and the end portion 4e of the contact piece 4.

Since the basic operation is the same as that of the first embodiment, a detailed description thereof will be omitted, and only the leaf spring portion 4b of the contact piece 4 will be described.

The narrow portion 4d provided approximately in the center between the central portion 4f and the end portion 4e of the leaf spring portion 4b has a central portion 4f and an end portion 4e.
Since the width is narrower, the spring constant can be further reduced as compared with the contact piece 4 shown in the embodiment of FIG. According to this embodiment as described above, the contact piece portion 4 is formed by the narrow portion 4d provided substantially in the center between the central portion 4f of the leaf spring portion 4b and the end portion 4e of the contact piece 4.
The spring constant of c can be reduced, and it is possible to provide an excellent switch that easily absorbs variations in elastic force due to variations in manufacturing of the contact piece portion 4c.

Another embodiment of the present invention will be described below with reference to FIG. In the figure, reference numeral 11 is a case made of an insulating material and having a plurality of fixed contacts 11a and cam lobes 11b on the bottom side,
12 is a slider 1 housed inside the case 11.
A lever composed of 2a and an operating body 12b, 15 a return spring for pressing the lever 12 to automatically return it, 13 a cover for covering the opening of the case 11, 4 a spring similar to that shown in FIG. Of a conductive metal, which is attached to the slider 12a and is pressed against the cam crest 11b, has a moderation spring part 4a, and a part of the moderation spring part 4a is connected via a slit to the center. A contact piece portion which has a leaf spring portion 4b having a narrow portion 4d substantially in the center of the portion 14f and the end portion 14e, and which is connected to the leaf spring portion 4b and is brought into contact with and conducts at two or more locations of the fixed contact 11a. 4c is a contact piece having 4c.

The operation of the switch configured as described above will be described with reference to FIG. First, lever 1
By pressing 2, the entire length of the return spring is compressed. At this time, the moderation spring portion 4a, which is pressed against the cam crest 11b in the case 11 and attached to the slider 12a, rides over the cam crest 11b and gives a moderation feeling. At this time, the contact piece portion 4c, which is also attached to the slider 12a and is in contact with the fixed contact 11a at the bottom of the case 11, has the same material thickness as the moderation spring portion due to the influence of the deflection and the twist of the leaf spring portion 4b in addition to its own deflection. Although it uses, it has the same low load elastic force as the conventional contact piece.

When the pressing of the lever 12 is stopped, the restoring force of the return spring 15 causes the lever 12 to return to its original position.
According to the present embodiment as described above, the contact piece 4 is composed of a moderation spring and a contact piece having different characteristics and different material thicknesses.
By providing the leaf spring portion, it is possible to provide a switch made of the same material and satisfying the respective characteristics, and it is possible to provide a switch that can be easily incorporated at low cost.

In each of the above embodiments, the contact piece which is the essential part of the present invention has been described with reference to FIGS. 2 and 4, but FIG.
As shown in (a), the leaf spring part 4b is cantilevered on the moderation spring part 4a, and the contact piece part 4c and the moderation spring part 4a have different directions (FIG. 6 (b)). The direction of the piece portion 4c and the moderation spring portion 4a is 180 ° opposite to that of the contact piece of FIG. 2 (in this case, the cam crest 1b,
11b is configured by providing a convex portion on the cases 1 and 11 side. ) Is acceptable.

[0020]

As described above, according to the present invention, it is possible to impart a high load / rigidity performance to the moderation spring portion and a low load / elasticity performance to the contact piece portion by one component, which is easy to assemble and is low in cost. It is possible to realize a satisfactory and excellent switch.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of a switch of the present invention.

FIG. 2 is a perspective view of a contact piece that is the main part of the same.

FIG. 3 is an exploded perspective view of the other embodiment.

FIG. 4 is a top view of a contact piece, which is the main part of the same.

FIG. 5 is a sectional view of the other embodiment.

FIG. 6 is a perspective view of another embodiment of the contact piece that is the same part.

FIG. 7 is a perspective view of a conventional switch.

FIG. 8 is an exploded perspective view of the same.

[Explanation of symbols]

 1 Case 1a Fixed Contact 1b Cam Mountain 2 Lever 2a Slider 2b Operating Body 3 Cover 4 Contact Piece 4a Moderation Spring Part 4b Leaf Spring Part 4c Contact Piece 4d Narrow Part 4e End Part 4f Central Part 5 Return Spring

Claims (2)

[Claims] 1. A case which is made of an insulating material and has a plurality of fixed contacts provided on the bottom surface, the case having an upper opening, a cover attached to the case, and a cover mounted on the case, and outside the cover or the side surface of the case. A lever consisting of an operating body projecting in one direction and a slider slidably accommodated in the case, and a cam mountain mounted on a part of the slider and provided on the case or the cover, being pressed against the lever. Consists of a moderation spring part that rides over the cam lobe, a leaf spring part at least partially connected to the moderation spring part, and a contact piece composed of a contact part connected to the plate spring part and sliding on the fixed contact. Switch to be done. 2. The switch according to claim 1, wherein the leaf spring portion is provided with a narrow portion at a position approximately in the center between the central portion and the end portion.