JP2591827Y2 - switch - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch used for a push-type detection switch and the like, and more particularly to a structure of a fixed-side switch contact.

[0002]

2. Description of the Related Art Conventionally, a push-type detection switch is configured, for example, as shown in FIG. That is, in FIG. 6, the detection switch 1 has a slider 2 whose one end 2a protrudes upward from an upper surface of a case (not shown) and is supported so as to be able to move up and down, and a conductive member disposed at the bottom in the case. And fixed contact portions 4 and 5 having clip-shaped elastic contact portions 4a and 5a extending upward from the base portion 3 and facing each other. The elastic contact portions 4a of the fixed contact portions 4, 5
5a, and the movable contact portion 6 which can be held between the elastic contact portions 4a and 5a.

The movable contact 6 is provided with one end 7 of a coil spring 7.
a is extended laterally, and is engaged with an engaging portion 2b projecting laterally from the lower end of the slider 2. As a result, the slider 2 is urged by the tension of the coil spring 7 to a position where it is pushed upward.

Here, as shown in FIGS. 7 and 8, the fixed contact portions 4 and 5 are integrally formed from a phosphor bronze plate having a thickness of about 0.06 mm, for example. ,
A mounting hole 8a provided in an extension of the web portion 8 connecting the lower end 5 to the boss portion 3a provided on the base portion 3 from a brass plate having a thickness of about 0.3 mm, for example.
The boss 3a is fitted and can be fixed and held to the base 3 by caulking of the boss 3a.

According to another configuration, the fixed contact portions 4 and 5 are formed, as shown in FIGS. 9 and 10, from a base material of phosphor bronze having a total thickness of about 0.08 mm by punching or the like. It is formed integrally with the portion 3 via the web portion 9, and after punching, a required portion of the web portion 9 is folded back to fix the fixed contact portion 4 at a predetermined position on the base portion 3. 5 can be provided.

[0006] According to the detection switch 1 configured as described above, the slider 2 normally has one end 7 a of the coil spring 7.
The movable contact portion 6 constituted by an extension of the slider 2 urges the engaging portion 2b of the slider 2 upward by the tension of the coil spring 7, so that the movable contact portion 6 can be held in a state of protruding from the upper surface of a case (not shown). . Therefore, the movable contact 6 is
The switch circuit, which is separated from the fixed contact portions 4 and 5 and is composed of the fixed contact portions 4 and 5 and the movable contact portion 6, is off.

When the upper end 2a of the slider 2 is pushed downward from this state, the slider 2 descends against the tension of the coil spring 7. Accordingly, the movable contact portion 6 can enter between the fixed contact portions 4 and 5 and be held by the elastic contact portions 4a and 5a of the fixed contact portions 4 and 5, and the switch circuit is turned on. To be.

Here, when the upper end 2a of the slider 2 is released, the movable contact portion 6 is raised by the tension of the coil spring 7, and the slider 2 is raised. At this time, the movable contact portion 6 escapes from between the elastic contact portions 4a and 5a of the fixed contact portions 4 and 5 and separates, so that the switch circuit is turned off again.

[0009]

However, in the detection switch 1 having such a configuration, the fixed contact portions 4,
7 and 8, as shown in FIGS. 7 and 8, when the base member 3 is attached to the base portion 3 by caulking, the number of parts increases, the assembling process becomes complicated, and the cost increases. was there.

Further, the fixed contact portions 4 and 5 correspond to FIGS.
As shown in FIG. 0, when formed integrally, there is a problem that the thickness of the base portion 3 is reduced and the strength is not sufficient, so that deformation or poor contact may occur. Was.

In view of the above, it is an object of the present invention to provide a highly reliable switch which has a simple structure and can be easily assembled.

[0012]

SUMMARY OF THE INVENTION An object of the present invention is to provide a slider which is supported so as to be movable up and down, and a switch which presses down the slider to electrically connect to a fixed contact portion, the base comprising a conductive material. And a pair of opposed fixed contact portions attached to each other so as to extend upward from the base portion, wherein the base portion and the fixed contact portion are integrally formed, and the base portion and the fixed contact portion are formed integrally. The fixed contact portion is disposed at a predetermined position with respect to the base portion by folding back a connection portion of the portion. In the switch, the fixed contact portion corresponds to the fixed contact portion of the base portion and the fixed contact portion. The area is achieved by a switch having a previously thinned configuration.

[0013]

According to the above structure, since the region corresponding to the fixed contact portion is formed thin, the base portion is relatively thick among the base portion and the fixed contact portion formed integrally by punching. As a result, sufficient strength can be given, no deformation or the like occurs, and since the fixed contact portion is relatively thin, the elastic contact portion has a predetermined elasticity. Therefore, the movable contact portion can be reliably held.

Therefore, the switch contact can be easily assembled with a simple structure, and the base portion and the fixed contact portion can be formed to have appropriate thicknesses, respectively, so that the reliability can be improved. Will be done.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. 1, 2, 3, 4 and 5
1 shows an embodiment of a vertical switch such as a push-type detection switch according to the present invention. The same components as those in the conventional example shown in FIGS. 6 and 9 are denoted by the same reference numerals and described.

The detection switch 10 has one end 2a and the case 1
6, a slider 2 protruding upward from the upper surface and supported so as to be vertically movable, a conductive base 11 disposed at the bottom in the case 16, and extending upward from the base 11 Clip-like elastic contact portions 12 facing each other
a, 13a, and the fixed contact portions 12, 13 which are lowered with the slider 2 to be lowered.
The movable contact portion 6 which can enter between the three elastic contact portions 12a and 13a and can be sandwiched between the elastic contact portions 12a and 13a.

The base portion 11 and the fixed contact portions 12, 13
Is formed integrally with the base portion 11 via a web portion 14 from a single plate-shaped hoop material by a punching process or the like. After the punching process, a necessary portion of the web portion 14 is folded back. By doing so, the fixed contact portions 12, 13 can be arranged at predetermined positions on the base portion 11.

The above configuration is the same as that of the conventional example shown in FIGS. 9 and 10, but is different from the conventional example shown in FIGS.
The hoop material is formed in the fixed contact portions 12 and 13 as shown in FIG. That is, in FIG. 5, the hoop material 15 includes fixed contact portions 12, excluding the base portion 11,
A region corresponding to 13 is formed thin in advance over the width A by appropriate processing such as grinding and drawing. For example, the thickness of the entire hoop material 15 is about 0.2
When the distance is 0.3 mm to 0.3 mm, the area is, for example, about 0.5 mm.
It is formed to a thickness of 06 mm.

The switch 10 according to the present invention is configured as described above. When the hoop material 15 is stamped as shown in FIG.
The thickness is the same as the entire thickness, and the fixed contact portions 12, 1
3 and the web portion 14 have the same thickness as the above area.

Therefore, since the fixed contact portions 12 and 13 are formed integrally with the base portion 11, there is no possibility that a contact failure occurs between them and the reliability is improved.

Further, since the base portion 11 is formed to be relatively thick, sufficient strength is given, and even when the movable contact portion enters between the fixed contact portions 12 and 13. There is no possibility that a contact failure occurs due to deformation of the base portion 11 or the like.

According to the detection switch having such a configuration,
Normally, the slider 2 has a case in which the movable contact portion 6 constituted by an extension of one end 7a of the coil spring 7 urges the engaging portion 2b of the slider 2 upward by the tension of the coil spring 7. 16 can be held in a protruding state. Therefore, the movable contact portion 6 is fixed to the fixed contact portion 1.
The switch circuit composed of the fixed contact portions 12 and 13 and the movable contact portion 6 is separated from the elastic contact portions 12a and 13a of the elastic contact portions 2 and 13 and is turned off.

When the upper end 2a of the slider 2 is pushed downward from this state, the slider 2 descends against the tension of the coil spring 7. Along with this, the movable contact portion 6 is connected to the elastic contact portions 12a,
13a, and can be sandwiched by the elastic contact portions 12a, 13a of the fixed contact portions 12, 13, and the switch circuit is turned on. At this time, since the fixed contact portions 12 and 13 are configured to be relatively thin, the elastic contact portions 12a and 13a have appropriate elasticity, so that the movable contact portion 6 is reliably held and contacted. And can be electrically connected.

When the upper end 2a of the slider 2 is released, the movable contact portion 6 is raised by the tension of the coil spring 7, and the slider 2 is raised. As a result, the movable contact 6 is fixed to the fixed contact 12,
The switch circuit is turned off again by escaping from and separating from the elastic contact portions 12a and 13a of the thirteen.

[0025]

As described above, according to the present invention, it is possible to provide a highly reliable switch which has a simple structure, can be easily assembled, and has high reliability.

[Brief description of the drawings]

FIG. 1 is an enlarged cross-sectional view illustrating a switch according to an embodiment of the present invention when the switch is not operated.

FIG. 2 is an enlarged cross-sectional view of the detection switch of FIG. 1 during operation.

FIG. 3 is a perspective view of a base and a fixed contact according to the present invention;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a perspective view of a hoop material which is a material of a fixed contact portion according to the present invention.

FIG. 6 is a schematic perspective view showing an example of a conventional push-type detection switch.

FIG. 7 is an exploded perspective view showing a fixed contact portion in the detection switch of FIG. 6;

FIG. 8 is a front view of the fixed contact portion of FIG.

FIG. 9 is a perspective view showing another example of the fixed contact portion in the detection switch of FIG. 6;

FIG. 10 is a side view of the fixed contact portion of FIG.

[Explanation of symbols]

 2 Slider 6 Movable contact part 7 Coil spring 10 Push detection switch 11 Base part 12, 13 Fixed contact part 12a, 13a Elastic contact part 14 Web part 15 Hoop material 16 Case A area

Claims (1)

(57) [Scope of request for utility model registration] 1. A switch supported vertically so as to be movable up and down, a switch for pushing down the slider and electrically connecting to a fixed contact portion, the base portion being made of a conductive material, and extending upward from the base portion. And a pair of opposed fixed contact portions attached to each other as described above. The base portion and the fixed contact portion are formed integrally, and the connecting portion between the base portion and the fixed contact portion is folded back. Wherein the fixed contact portion is disposed at a predetermined position with respect to the base portion. In the switch, a region corresponding to the fixed contact portion of the base portion and the fixed contact portion is formed to be thin in advance. Configuration switches.