JPH05342950A - Slide switch - Google Patents

Abstract

PURPOSE:To eliminate need of a coil spring, etc., by composing a switch in such a way that fixed conductors are shortcircuitted to be continuous to each other by an intermediate protruding surface of a conductive member covering a trough between the fixed conductors. CONSTITUTION:A knob 4 is exposed from a hole 3 in an upper plate 2 of an insulation base body 1 moulded having an almost U-shaped cross section, and an insulation slide body 5 is movably provided in a recessed place 1a in the insulation base body 1. An almost U-shaped conductive member 6 having a pair of folded resilient members 6a, 6a is disposed in a recessed plate 5a of the slide body 5, and plural fixed conductors 9, 9 forming protruding surfaces 8 adjacent to each other through an intermediate protruding surface 7 are fixed in parallel at a lower part of the insulation base body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a conductive piece having a pair of folding bullet pieces as a movable contact piece in a slide switch, and a plurality of so-called busbars, which are so-called bus bars, are directly arranged in parallel as fixed contact pieces. The present invention relates to a slide switch which has a self-cleaning action and uses a coil spring.

[0002]

2. Description of the Related Art As a slide switch of this kind, there is a slide switch described in, for example, Japanese Patent Laid-Open No. 3-194812.

In this conventional technique, in a slide switch provided with a movable contact piece on a sliding body, a knob is projected outside from a hole of an upper plate of an insulating base having a substantially U-shaped cross section, and is inserted into a recess of the insulating base. A plurality of small-width conductive members provided with an insulative slidable body movably, a movable conductor protruding by a spring being arranged at the lower part of the slidable body, and a bump contact portion slidably contacting over the movable conductor. A slide switch in which plates are fixed in parallel to the lower part of the insulating base.

[0004]

In the prior art described above, it is necessary to dispose the movable conductor projecting by the coil spring under the sliding body. Therefore, the spring is easy to spring due to its elasticity, and the spring is easy to assemble when the slide switch is assembled. However, there is a problem in that the assembling property may be poor, and the automatic assembling is almost impossible.

According to the present invention, in order to eliminate the above-mentioned problems, a plurality of small-width conductive plates, so-called bus bars, are provided in parallel on the fixed contact piece of the slide switch, so that the distance between the protruding surfaces of these fixed contact pieces is increased. The purpose of the present invention is to provide a switch that short-circuits and conducts between the fixed contact pieces on the intermediate projecting surface of the conductive bullet piece that straddles the valley, and enables automatic assembly without the need for a coil spring or the like.

[0006]

SUMMARY OF THE INVENTION The above-mentioned object of the present invention is to construct a slide switch having a movable contact piece on a sliding body from the hole of the upper plate of an insulating base having a substantially U-shaped cross section to the outside. An insulating sliding body is movably provided in the recess of the insulating base by exposing the knob, and a substantially U-shaped conductive bullet having a pair of folding bullets is arranged in the concave of the sliding body, and This can be achieved by fixing in parallel a plurality of fixed contact pieces, each of which has a protruding surface that slides in contact with the intermediate protruding surface, on the lower portion of the insulating base.

A plurality of fixed contact pieces may be fixed in parallel to the lower part of the insulating substrate by an embedded portion 10 such as a groove or a hole or a pressing plate 11.

[0008]

[Operation] In the switch state immediately after assembly, the intermediate projecting surface of the conductive piece falls between the projecting surfaces of the two fixed contact pieces, and the projecting surfaces on both sides are short-circuited between the projecting surfaces.

Next, in order to switch the switch, the knob is moved laterally from the central position. First, the oblique side of the fixed contact piece protruding surface is moved by the intermediate protruding surface of the conductive piece against the elastic force of the folding piece of the conductive piece. Then, the folded-up bullet piece on the upper part of the conductive piece is slackened at this time, and the conductive piece upright portion smoothly moves while sliding up and down without rubbing the upper surface of the recess of the sliding body with the bullet piece.

When the apex of the intermediate projecting surface of the conductive piece crosses the apex of the projecting surface of the fixed contact piece, the upright portions on both sides are moved downward in the recess by the elastic force of the folding piece of the conductive piece. The switch can be switched by snapping between the protruding surfaces of the two left-side fixed contact pieces and short-circuiting the protruding surfaces across the protruding surfaces.

Then, the conductive piece moved by the above-mentioned knob elastically snaps into the valley of each projecting surface of the fixed contact piece (small-width conductive plate), whereby a click action, that is, a snap action can be given to the knob operation as the slide switch. Therefore, it is possible to operate the knob with a snap and a sharp crispness, and the controllability as a switch is improved.

[0012] Further, by making the intermediate projecting surface of the conductive piece escape from the above valley, the switch is turned off, or the intermediate projecting surface is dropped by the elasticity of the conductive piece in the valley of another fixed contact piece. It serves as a pole double throw / double pole double throw selector switch.

[0013]

EXAMPLES Examples will be described with reference to the drawings. First, as shown in FIGS. 1 and 2, the basic structure of the present invention is as shown in FIGS. 2 and 4 in which a rectangular hole 3 is provided in the upper plate 2 of an insulating substrate 1 which is formed of plastic or the like and has a substantially U-shaped cross section. An insulative slide body 5 formed by molding a plastic or the like into the recess 1a of the insulating base 1 by projecting the knob 4 to the outside.
Is movably equipped.

A substantially U-shaped conductive piece 6 having a pair of folded-up bullet pieces 6a, 6a formed on the upper portion of the sliding member 5 by a phosphor bronze plate or the like is formed by elastic force generated on the upright portions 6b, 6b on both sides thereof. A fixed contact piece 9 composed of a plurality of small-width conductive plates or the like, which are arranged temporarily and formed with a protruding surface 8 which is slidably contacted over the intermediate protruding surface 7 of the conductive piece 6 as shown in FIGS. 9 is fixed in parallel to the lower part of the insulating base 1 with a predetermined interval.

Further, the plurality of fixed contact pieces 9 and 9 are made into an insulating substrate.
As a means to fix in parallel to the lower part of 1, it may be fixed in parallel with the embedding part 10 such as a groove or hole and the pressing plate 11 as shown in each figure, or other suitable fixing means such as screwing. it can.

Next, the procedure for assembling this slide switch will be described. First, among the parts shown in FIGS. 1 to 4, a substantially U-shaped conductive piece 6 having an open upper end is placed in a recess 5a of a hollow rectangular parallelepiped sliding member 5 formed by plastic molding as shown in FIG. Holes formed in the upper plate 2 of the recess 1a of the insulating base 1 by inserting the pieces 6a, 6a against the elastic force and temporarily fixing the inserted state by the elastic force generated in the upright portions 6b, 6b of the conductive piece 6. Insert Knob 4 into 3 and turn back piece 6 of Conductive piece.
A fixed contact piece 9 is applied to the lower part of the insulating substrate 1 as shown in FIGS. 2 and 4 against the elasticity of 6a, 6a.

After this application, the folded back pieces 6a, 6a
As shown in FIG. 2, the pressing plate 11 is screwed to the insulating base 1 with the screws 12 and 12 so that the intermediate projecting surface 7 is slightly pushed in against the elastic force of.

That is, the sliding body 5 is first inserted into the recess 1a of the insulating substrate 1 as shown in FIGS. 2 and 4, and the knob 4 is projected from the hole 3 to the outside.

The fixed contact piece 9 is aligned with the embedded portion 10 of the insulating substrate 1 as shown in FIG. 1, and then the fixed contact piece 9 is attached to the embedded portion 10 such as a groove as shown in FIGS. 2 and 4. The slide switch according to the present invention is completed by engaging with each other and attaching it to the bottom surface of the insulating substrate 1 by using a locking bullet piece and a set screw 12 which are not shown, as shown in FIG. The pair of folded bullet pieces 6a, 6a provided on the conductive piece 6 may be plastic bullet pieces, and the folded bullet pieces 6a, 6a may be V turn-shaped folded bullet pieces as shown in FIG. Alternatively, an upper upright piece may be formed as shown in FIG. 6, and the conductive piece 6 itself may be solid.

Next, the operation of this slide switch will be described. As the switch state immediately after assembly, two fixed contact pieces 9,
The middle projecting surface 7 of the conductive piece 6 is between the projecting surfaces 8 and 8 of 9
As shown in Fig. 2, it is depressed by the elasticity of a and 6a, and it straddles the projecting surfaces 8 and 8 on both sides, and short-circuits both projecting surfaces 8 and 8.

Next, in order to switch the switch, the knob 4 is moved to the left from the center position in FIG. 2, and first, the oblique side of the fixed contact piece projecting surface 8 is moved to the middle projecting surface 7 of the conductive piece 6 and the conductive piece 6 is replaced with the conductive piece 6. As shown in FIG. 3, the folded-back bullet pieces 6a, 6a move up against the elastic force of the folded-back bullet pieces 6a, 6a.
b and 6b slide on the inner surface of the concave portion 5a of the sliding body 5 up and down and move smoothly.

Then, the apex of the protruding surface 8 of the fixed contact piece 9 is connected to the conductive piece.
When the apex of the intermediate projecting surface 7 of 6 is overcome, this time the upright parts 6b, 6b on both sides of the conductive piece 6 are moved downward in the recess 5a by the elastic force of the folded projecting pieces 6a, 6a, and the intermediate projecting surface 7 is As shown by the alternate long and short dash line 3 in FIG. 3, the left fixed contact piece 9, 9 snaps between the protruding surfaces 8, 8 and short-circuits between the protruding surfaces 8 and 8 to switch between them.

Then, as shown in FIG. 2, the intermediate projecting surface 7 of the conductive piece 6 which is moved by the knob 4 elastically snaps into the valley between the projecting surfaces 8 and 8 of the fixed contact piece 9 (small width conductive plate) as shown in FIG. Since a click action, that is, a snap action can be given to the knob operation as the slide switch, the knob operation with a snap and snap can be performed, and the controllability as the switch is improved.

[0024]

Since the present invention is configured as described above, it has the following effects. When the knob 4 is moved, the folding pieces 6a, 6a of the conductive piece 6 are slackened, and the conductive piece upright portions 6b, 6b move up and down along the inner surface of the concave portion 5a of the sliding body 5 without difficulty, and the fixed contact piece is moved. When the apex of the intermediate projecting surface 7 of the conductive piece 6 crosses over the apex of the projecting surface 8 of 9, the intermediate projecting surface 7 is fixed to the left side by the elastic force of the flexible tongues 6a, 6a of the conductive piece 6. Since it is possible to switch between them by snapping between the projecting surfaces 8 and 8 of 9 and short-circuiting them over each projecting surface 8 and 8, first of all, the upper surface of the concave portion 5a is folded back.
Since 6a does not rub against wear for a long period of time, secondly, in the present invention, one conductive piece 6 can be used as both the coil spring and the movable conductor such as a steel ball in the prior art, so the number of parts is reduced by half. It has the first and second effects of lowering the cost.

In the present invention, the coil spring or the steel ball, which is easily scattered in the automatic assembly process, is not used in the present invention, and the conductive piece 6 temporarily arranged by the self-elasticity in the slide body recess 5a is used. There is also a third effect that full automation can be realized.

Then, the intermediate projecting surface 7 of the conductive piece which is moved by the knob 4 elastically snaps into the valley between the projecting surfaces 8 and 8 of the fixed contact piece 9 (small width conductive plate), so that the knob as a slide switch is provided. Since a click action, that is, a snap action can be added to the operation, there is a fourth effect that a knob operation with a snap and a snap can be performed.

Further, the intermediate projecting surface of the conductive piece is allowed to escape from the above-mentioned valley to switch it off, or the intermediate projecting surface is dropped into another valley to drop the single-pole double-throw, double-pole double-throw and other multi-pole multi-poles. Since it functions as a throwing changeover switch, there is a fifth effect that a wide variety of slide switches can be automatically manufactured.

According to claim 2, the fixed contact piece 9 is provided in the groove or hole.
Since it is tightly held by the pressing plate 11 and the like, the arrangement position of the plurality of fixed contact pieces 9 can be firmly fixed without screwing, and the effect that the stability of operation can be guaranteed for a long time can be added.

[Brief description of drawings]

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

FIG. 2 is a vertical cross-sectional view after assembly of the same as above.

FIG. 3 is a vertical sectional view showing a state different from that of FIG.

FIG. 4 is a sectional view taken along the line of FIG.

FIG. 5 is a sectional view showing another embodiment of the conductive piece used in the present invention.

FIG. 6 is a sectional view showing another embodiment of the conductive piece used in the present invention.

[Explanation of symbols]

 1 Insulating base 1a Recess 2 Upper plate 3 Hole 4 Knob 5 Sliding body 5a Recess 6 Recessed piece 6 Conductive piece 6a A pair of folded bullet pieces 7 Intermediate projecting surface 8 Projection surface 9 Fixed contact piece 10 Embedded part such as groove or hole 11 Holding plate

Claims (2)

[Claims] 1. A slide switch having a movable contact piece on a sliding body, wherein a knob 4 is exposed to the outside from a hole 3 in an upper plate 2 of an insulating substrate 1 formed in a substantially U-shaped cross section, and the concave portion of the insulating substrate 1 is exposed. An insulating sliding body 5 is movably provided in the place 1a, and a substantially U-shaped conductive piece 6 having a pair of folding bullet pieces 6a, 6a is arranged in the recess 5a of the sliding body 5 and the middle thereof is provided. A slide switch in which a plurality of fixed contact pieces (9, 9) having a protruding surface (8) over which the protruding surface (7) is slidably contacted are fixed in parallel to the lower part of the insulating base body (1). 2. The slide switch according to claim 1, wherein a plurality of fixed contact pieces 9, 9 are fixed in parallel to the lower portion of the insulating base 1 by embedded portions 10 such as grooves and holes and a holding plate 11.