JPH09245569A - Slide switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide switch in which only one coil spring is used both for clicking and for elastically contacting a moving contact piece against the fixed contact piece, switching index feeling is good, no occurrence of the permanent set in fatigue of the spring, size is small in a plane view, workability is good, and the cost is low by arranging a click protrusion and a moving contact respectively arranging in series on both sides of the coil spring as sandwiching the coil spring set in a hole made in the slider of the slide switch, and assembling the slide switch. SOLUTION: In constituting a slide switch provided with a moving contact piece and a click protrusion in a slider, a slider 3 is disposed in the recessed portion 2 of a frame-like insulation base body 1 so as to be movable as facing a knob 3a outward from the long hole 2a thereof, and an hole 4 is formed therein so as to cross approximately at right angles with the sliding direction thereof. The slider 3 is disposed in the recessed portion 2 as respectively elastically contacting with a clicking recessed portion 8, in which a click protrusion 6 and a moving contact piece 7, which are arranged protrusively in series as sandwiching a coil spring 5 inserted in the hole 4, are respectively provided on confronting inner faces of the recessed portion 2 and plural fixed contact pieces 9, and the opening edge of the recessed portion 2 is covered by a lid plate 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide switch suitable for use as a switch for blinking or switching an interior light or the like.

[0002]

2. Description of the Related Art Conventionally, as a slide switch of this type, for example, Japanese Unexamined Utility Model Publication No. 3-8833 previously proposed by the present applicant has been proposed.
There is one described in Japanese Patent Publication. This prior art relates to a slide switch having a movable contact piece provided on a sliding body, an insulating base formed in a substantially U-shaped cross section, a long hole connected to a recess of the insulating base, and an external through the long hole. An insulating sliding member provided with a knob protruding to be movable in the recess of the insulating base; a locking hole (recess) communicating with a pair of holes cut out below the sliding member; A movable contact piece having a substantially U-shaped cross section having a locking portion inserted and locked through the locking hole (recess) through the hole, and a bullet interposed between the upper surface of the movable contact piece and the sliding body. A slide switch including a repelling spring and an insulating plate for disposing a plurality of fixed contact pieces slidably in contact with the movable contact piece under the insulating base.

[0003]

However, in the conventional slide switch described in JP-B-57-10032 and JP-B-55-55469, such as the conventional example, the movable contact piece is a fixed contact piece. The spring for sliding elastic contact and the click action of the switch operation, that is, the click spring for imparting a switching moderation to the fingers, require two coil springs and leaf spring contact pieces, one for each. Therefore, in terms of parts management and assemblability, there is a problem that it is significantly disadvantageous to a single spring that does not have a switching moderation and leads to cost increase.

Further, apart from the above, Japanese Utility Model Application Laid-Open No. 63-137
No. 421, that is, a single leaf spring in which two pairs of opposing long and short ends out of four end portions of a flat E-shaped leaf spring material are used for a click and a movable contact piece for each pair. There is also a slide switch with a click depending on the material, but this one has a drawback that it tends to cause poor contact and moderation due to the "slip" peculiar to the leaf spring. There was a problem of inhibiting the.

[0005] The present invention has been made to solve all of the above-mentioned problems.
The slider of the slide switch is sandwiched by the coil springs provided in the open holes, and the click protrusion and the movable contact piece are arranged in series on both sides of the coil spring to assemble them, and only one coil spring is clickable and movable. It also serves as a resilient contact for the fixed contact of the contact piece, has a switching moderation, and has a "settling" effect on the spring.
It is intended to provide a planarly small slide switch that does not cause a problem with good workability and at a low cost.

[0006]

The object of the present invention described above is, in constructing a slide switch having a slider with a movable contact piece and a click protrusion, has a long hole in a recess of a frame-shaped insulating base. A slider with a squeezing knob that can move toward the outside is formed with a hole that is substantially orthogonal to the sliding direction, and a coil spring inserted in this hole is sandwiched between the click protrusion and the movable contact piece arranged in series in a protruding tendency. And sliders are respectively elastically contacted with the click recesses and the plurality of fixed contact pieces provided on the inner surfaces of the recess facing each other, and the slider is disposed in the recess, and the lid plate is provided at the opening edge of the recess. I was able to achieve it by putting on.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, as shown in FIGS. 1 and 2, the basic mode of the present invention is to form a slide switch having a slider with a movable contact piece and a click protrusion so that a plastic is squared. In the recess 2 of the insulating base body 1 formed by molding in the shape of a frame, the knob 3a is directed outward from the elongated hole 2a.
As shown in FIGS. 1 and 3, the slider 3 to be movably arranged as described above is provided with a relatively small hole 4 substantially orthogonal to the sliding direction. Then, the coil spring 5 inserted as shown in FIG. 2 is sandwiched in the hole 4, and the click protrusion 6 and the movable contact piece 7 made of steel balls or the like on both sides of the coil spring 5 tend to protrude as shown in FIG. To arrange.

Next, the protrusion 6 and the movable contact piece 7 are respectively provided in the click recess 8 and the plurality of fixed contact pieces 9 provided on the inner surfaces of the recess 2 facing each other as shown in FIGS. As shown in the drawings, the slider 3 is elastically contacted with the recess 2
It is arranged so as to be movable inside as shown in FIG.
The basic form of the slide switch according to the present invention can be configured by covering the opening edge of the cover plate 10 with the locking hook piece 10a as shown in FIG.

In order to automatically assemble this slide switch, one end of the hole 4 of the slider 3 is narrowed and tapered as shown in FIG. As shown in FIG.
The movable contact piece 7 is formed with an outward engaging hole 7a as shown in FIG. 1, and the engaging hole 7a is provided outside the hole 4 of the slider 3 as shown in FIG. As shown in FIG. 3, the tip end of the slide switch is engaged with the snap spring against the elastic force of the coil spring 5 to prevent the coil spring 5 from coming off, thereby facilitating automation of the assembly of the slide switch.

The click protrusion 6 and the movable contact piece 7 always tend to project due to the elastic force of the coil spring 5, and the contact piece can be pushed to the outer surface of the slider 3 against the elastic force of the coil spring 5. The dimensions and the like of the locking hole 7a are set in advance.

Since the slide switch according to the present invention has the above-mentioned structure, the slide switch shown in FIG.
At the slider position, the movable contact piece 7 straddles the two adjacent fixed contact pieces 9, 9 by the elastic force of the coil spring 5, and the two fixed contact pieces 9, 9 are electrically connected. Therefore, the click protrusion 6 has fallen into the click recess 8 of the base recess 2 by the elastic force of the coil spring 5, so that the slider 3 can be maintained in the above-mentioned conducting state in a stable manner without moving unintentionally.

Next, when the slider 3 is moved along the elongated hole 2a with the fingers or the like through the state of FIG. 4 and as shown in FIG. 5, this time, another two adjacent fixed contact pieces 9 different from the above are provided. , 9, the movable contact piece 7 straddles and elastically contacts the two fixed contact pieces 9, 9 different from those in FIG. 3 to establish a conduction state, and the click protrusion 6 causes another click of the base recess 1a different from that in FIG. As shown in FIG. 5, the coil spring 5 snaps into the concave portion 8 to give a switching moderation, that is, a click action to a finger or the like, and the slider 3 does not move indefinitely after the depression. The conductive state due to can be stably maintained.

[0013]

EXAMPLE As an example of mounting the movable contact piece 7 on the slider 3 by retaining it, as shown in FIG. 6, an engaging step edge 7A of the movable contact piece 7 is provided in a hole 4 of the slider 3 so as to project. The piece 4A may be mounted by being engaged and locked with the snap by the elastic force specific to the contact piece.

In addition to the steel ball, the click protrusion 6 may be a sphere, a hemisphere, a bowl, or a protrusion, and the fixed contact piece 9 is a positioning member provided on the inner surface of the recess 2. Instead of aligning with the groove 9a, well-known fixing means such as screwing or adhering may be used, and the lid plate 10 is engaged with the edge of the base body engaging hole 1a by the engaging hook piece 10a. Instead of the mounting and mounting as described above, the opening edge of the base recess 1a can be covered by a known means such as screwing.

[0015]

As described above, the present invention has the following advantages. In the recess 2 of the frame-shaped insulating base body 1, a slider 3 is provided which is movably arranged so that a knob 3a extends outward from the elongated hole 2a, and a hole 4 substantially orthogonal to the sliding direction is formed in the slider 3. A click protrusion 6 and a movable contact piece 7, which are arranged in series so as to protrude with a coil spring 5 inserted between them, are respectively provided in a click recess 8 and a plurality of fixed contact pieces 9 provided on the inner surfaces of the recess 2 facing each other. Since the slider 3 is elastically contacted and disposed in the recess 2, only one coil spring is used for clicking the coil spring and for elastically contacting the movable contact with the fixed contact. There is an industrial effect that it is possible to provide a two-dimensionally small slide switch which also serves as a dual mode, has a switching moderation, and does not cause "sagging" in the spring with good workability and at low cost.

According to the second and third aspects, since the click protrusion 6 and the movable contact piece 7 do not inadvertently escape from the slider 3, the mounting of the slider 3 in the base recess 2 can be surely facilitated.
The effect that the assembling workability of the slide switch can be improved and the automatic assembling thereof can be promoted can be added.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a slide switch according to the present invention before assembly.

FIG. 2 is a transverse elevation view of the slide switch according to the present invention after assembly.

FIG. 3 is a cutaway plan view of the slide switch according to the present invention after assembling.

FIG. 4 is a cutaway plan view showing a state different from that of FIG.

FIG. 5 is a cutaway plan view showing a state different from that of FIG.

FIG. 6 is a cutaway plan view showing another example of the one shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulating substrate 2 Recess 2a Long hole 3 Slider 3a Knob 4 Hole 5 Coil spring 6 Click protrusion 7 Movable contact piece 8 Recess for click 9 Fixed contact piece 10 Cover plate

Claims (3)

[Claims] 1. In a slide switch having a slider with a movable contact piece and a click protrusion, a knob 3a is movably arranged in a recess 2 of a frame-shaped insulating base 1 from its elongated hole 2a. A hole 4 which is substantially orthogonal to the sliding direction is formed in the slider 3 provided, and a coil spring 5 inserted in the hole 4 is sandwiched between a click protrusion 6 and a movable contact piece 7 which are arranged in series so as to project. The slider 3 is disposed in the recess 2 by elastically contacting the click recess 8 and the plurality of fixed contact pieces 9 provided on the inner surface of the recess 2 facing each other, and
A slide switch in which the opening edge of the recess 2 is covered with the cover plate 10. 2. The slide switch according to claim 1, wherein one end of the hole 4 of the slider 3 is tapered to prevent the click protrusion 6 from coming out. 3. The slide switch according to claim 1, wherein the movable contact piece 7 is mounted on the slider 3 so as to prevent the movable contact piece 7 from falling off.