JP2819272B2 - Slide 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 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 No. 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, the conventional slide switch described in Japanese Utility Model Publication No. 57-10032 or Japanese Utility Model Publication No. 55-55469, in addition to this conventional example, uses a movable contact as a fixed contact. A spring for sliding elastic contact and a click action for switch operation, that is, a click spring for giving a switching moderation feeling to a finger, are individually provided, one each for a total of two coil springs and leaf spring contact pieces. As a result, an insulating plate (lid) for preventing the sliding body (slider) from coming off and positioning the fixed contact piece is required, so that it is complicated in terms of parts management and assemblability, and a single spring having no switching moderation feeling. There was a problem that the assembly was more troublesome than the one and the yield was worse, which led to an increase in cost.

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 opposite long and short ends 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. Although there are slide switches with clicks made of material, this switch has the disadvantage that the elastic fatigue inherent to the leaf spring, that is, “spotting”, deteriorates the leaf spring elasticity and easily leads to poor contact and moderation. However, there is a problem that miniaturization of the switch is hindered.

[0005] The present invention has been made to solve all of the above-mentioned problems.
By eliminating the need for an insulating cover for positioning the fixed contact that also serves as a stopper for the slider, and by using only one coil spring for both the click and the elastic contact of the movable contact with the fixed contact, the switching moderation is reduced. An object of the present invention is to provide a planar small slide switch which has a feeling and does not cause so-called "striking" of a spring with good workability and at low cost.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is to dispose a slider movably in a recess of a plastic molded frame with its knob facing outward from its long hole. A hole substantially perpendicular to the sliding direction is formed in advance, and a click projection and a movable contact piece are arranged in series on both sides of a coil spring inserted in the hole, and the slider is bent in the frame body against its elasticity. By arranging through the locking claws on the inner surface of the recess, the slider is prevented from coming off, and the click projection and the movable contact piece are respectively provided on the opposite inner surface of the recess by a click recess. This was achieved by making elastic contact with a plurality of fixed contact pieces arranged opposite to the concave portion, respectively.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, according to a basic embodiment of the present invention, as shown in FIGS. 1 and 2, when a slide switch having a movable contact piece and a click projection is formed on a slider, a plastic molded insulating switch is used. The slider 3 is movably disposed in the recess 2 of the frame 1 with the knob 3a facing the outside from the long hole 2a. The slider 3 has a hole 4 that is substantially perpendicular to the sliding direction in advance. Is formed, and this hole 4
The click projection 6 and the movable contact piece 7 inserted into the contact piece insertion hole 7a are arranged in series on both sides of the coil spring 5 inserted therein.

Next, when placing the slider 3 in the above-described arrangement state in the frame recess 2, first, FIG.
When the slider 3 is pushed into the recess 2 while straddling the lower portion of the slider 3 between the inner slopes of the locking claws 2A protruding from the opposed inner surface near the opening edge of the recess 2 as shown in FIG. Due to the pushing force, the frame opposing sides 1A bend outwardly against their elasticity.

As a result, the gap between the locking claws 2A is widened to the width of the slider as shown in FIG. 2A, and the slider 3 is moved through the widened locking claws 2A, as shown in FIG.
3C. When the upper edge of the slider 3 passes through the locking claw 2A, the frame-facing side 1A is
As shown in FIG. 3 (d), it returns to its original state with a snap due to its own elasticity.

After the return, the slider 3 can be movably placed along the long hole 2a in the recess 2 of the frame body. As described above, the slider 3 can be prevented from coming off, and the click projection 6 and the movable contact piece 7 are cut and formed in the click recess 8 provided on the inner surface facing the recess 2 respectively. As shown in FIGS. 2D and 3, the slide switch according to the present invention can be configured to resiliently contact a plurality of fixed contact pieces 9 arranged by the positioning grooves 9 a.

The click projection 6 and the movable contact piece 7 are
The elasticity of the coil spring 5 always tends to protrude. The depth of the contact piece insertion hole 7a is set so that the outer surface of the slider 3 can be pushed in against the elasticity of the coil spring 5.

The slide switch according to the present invention has the above-described configuration. To use the slide switch, first,
In the slider position shown in FIG. 3A, the movable contact piece 7 straddles the two right fixed contact pieces 9 adjacent to each other with the resilient force of the coil spring 5, and the fixed contact pieces 9 and 9 are fixed to each other. 9, the click projection 6 has fallen into the click recess 8 of the base recess 2 by the resilient force of the coil spring 5, and the slider 3 does not move unnecessarily, and the above-mentioned conduction state is stabilized. Can be maintained.

Next, as shown in FIG. 3C, the slider 3 is moved along the elongated hole 2a by a finger or the like through the state shown in FIG. 3B and against the elasticity of the coil spring 5, as shown in FIG. The movable contact piece 7 straddles and resiliently contacts the two fixed contact pieces 9 adjacent to the left side, and is different from FIG. 3A. Are in a conductive state, and the click protrusion 6 is different from FIG.
As shown in FIG. 3C, the click spring 8 snaps down by the resilience of the coil spring 5 so that a switching moderation, that is, a click action can be imparted to a finger or the like. After this fall, the slider 3 does not move sloppyly. FIG. 3 above
(C) can be stably maintained.

When the slider 3 is further moved leftward to the position shown in FIG. 3D, this time, the movable contact 7 is brought into an all-off state in which the movable contact 7 is in contact only with the single fixed contact 9. The state can be safely maintained by the recess 8.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As a specific example for automatically assembling a slide switch according to the present invention, one end of a hole 4 of a slider 3 is narrowed to a point smaller than that of a projection 6 as shown in FIGS.
The protrusion 6 is partially projected so as not to come off as shown in FIGS. 4 and 5, and a locking hole 7A is formed in the movable contact piece 7 as shown in FIG. Is attached to the hook at the tip end of the locking bullet 4a facing the outside of the hole 4 of the slider 3.
As described above, by engaging the snap against the elasticity to prevent the slide from coming out, the automation of the assembly of the slide switch can be promoted.

As another specific example of mounting the movable contact piece 7 on the slider 3 so as not to come off, the locking step 7B of the movable contact piece 7 is inserted into the hole 4 of the slider 3 as shown in FIG. The projecting locking hook 4A may be mounted so as to engage and lock with the snap with the elasticity inherent to the contact piece.

The click projection 6 may be a simple sphere, a hemisphere or a bowl other than a steel ball, and the fixed contact piece 9 is provided on the inner surface of the locking claw 2A of the recess 2. Instead of aligning and arranging with the provided positioning groove 9a, it may be aligned and fixed by well-known fixing means such as screwing or bonding.

[0018]

As described above, the present invention has the following advantages. A hole 4 substantially perpendicular to the sliding direction is formed in advance in the slider 3 to be provided with the knob 3a movably toward the outside from the long hole 2a in the concave portion 2 of the insulating frame 1. A click projection 6 and a movable contact piece 7 which are arranged in series with a coil spring 5 inserted in the hole 4 in a protruding tendency are respectively provided on a click recess 8 provided on an inner surface facing the recess 2 and a click recess 8 facing the recess. The slider 3 is disposed in the recess 2 by being resiliently contacted with a plurality of fixed contact pieces 9 arranged in the same manner, so that the coil spring can be clicked and movable by using only one coil spring. It can be used as an elastic contact of the contact piece with the fixed contact piece, and it is possible to provide a small flat switch with good operability at low cost, which has a switching moderation feeling and does not cause "shattering" in the spring. There is an industrial effect.

Further, when placing the slider 3 of the present invention in the frame body recess 2, first, the lower part of the slider 3 is interposed between the locking claws 2A protruding from the opposed inner surface near the opening edge of the recess 2. When the slider 3 is pushed into the recess 2 while straddling the frame, the opposite sides 1A of the frame body bend outwardly against their elasticity, and the gap between the locking claws 2A is widened. , The slider 3 can be pushed into the recess 2, and when the upper edge of the slider 3 passes through the locking claw 2 </ b> A, the frame opposing side 1
Since A can snap back to its original state by self-elasticity and prevent the slider 3 from coming off, there is also an effect that an insulating plate (cover plate) to cover the opening edge of the frame body is not required and the assembling property is improved.

According to the second and third aspects, since the click projection 6 and the movable contact piece 7 do not escape unnecessarily from the slider 3, the mounting of the slider 3 in the base recess 2 becomes easy and reliable.
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 the drawings]

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

FIG. 2 is a cross-sectional elevation view during and after assembly of a slide switch according to the present invention.

FIG. 3 is a cutaway plan view for explaining the operation of the slide switch according to the present invention.

FIG. 4 is a sectional view showing a specific example of a main part of a slider in the slide switch according to the present invention.

FIG. 5 is a sectional view showing a specific example of a main part of a slider in the slide switch according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulating frame 1A Frame facing side 2 Depression 2a Long hole 2A Locking claw 3 Slider 3a Knob 4 Hole 5 Coil spring 6 Click projection 7 Movable contact piece 7a Movable contact piece insertion hole 8 Clicking recess 9 Fixed contact piece

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Real opening 50-5076 (JP, U) Real opening 51-9269 (JP, U) Real opening 53-19785 (JP, U) Real opening 62 150828 (JP, U) Japanese Utility Model 1-92043 (JP, U) Japanese Utility Model 3-8833 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) H01H 15/00-15 /twenty four

Claims (3)

(57) [Claims] 1. A slide switch having a movable contact piece and a click projection on a slider. The slider 3 is moved from a long hole 2a of the slider 3 to the outside in a recess 2 of a frame 1 made of plastic. In arranging as possible,
The slider 3 is formed with a hole 4 which is substantially perpendicular to the sliding direction in advance, and a click projection 6 and a movable contact piece 7 are arranged in series on both sides of a coil spring 5 inserted into the hole 4. Is placed in the frame 1 through the locking claw 2A on the inner surface of the recess while being bent against the elasticity of the recess, thereby preventing the slider 3 from coming off and the click projection 6 and the movable contact piece 7 And a plurality of fixed contact pieces 9 disposed opposite to each other on the inner surface of the recess 2 opposite to each other. 2. The slide switch according to claim 1, wherein the end of the click projection is prevented by tapering one end of the hole of the slider. 3. The slide switch according to claim 1, wherein the movable contact piece is prevented from falling off by mounting the movable contact piece on the slider.