JP3813354B2 - Slide switch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slide switch used in an electric circuit or general electric device in an automobile.
[0002]
[Prior art]
As shown in FIG. 5, the conventional slide switch includes a printed circuit board 3 on which required conductor patterns 2A and 2B are formed on an insulating substrate 1, and a conductive brush 4 formed so as to straddle the conductor patterns 2A and 2B. And the lead wire 5 soldered to the conductor patterns 2A and 2B, and the electric circuit is turned on and off by moving the conductive brush 4 in the direction of the arrow.
[0003]
[Problems to be solved by the invention]
However, such a slide switch requires a printed circuit board on which a specific conductor pattern is formed, and it is necessary to connect a lead wire to the conductor pattern, which is troublesome to manufacture and has a problem of low reliability. there were.
[0004]
Therefore, an object of the present invention is to provide a slide switch that is easy to manufacture and highly reliable.
[0005]
[Means for Solving the Problems]
In order to achieve this object, the slide switch of the present invention has two FFCs (flexible flat cables) in which the insulating film is removed in a part of the longitudinal direction to expose the tape-like conductor, and the conductor exposed part is the same in the longitudinal direction. The slide switch is disposed so as to be opposed to each other and provided with a slider that can slide in the longitudinal direction of the two FFCs. The slider is a convex that lifts a part of the lower FFC in the longitudinal direction from the lower surface. A lower support piece having a strip, an elastic pressing piece that sandwiches a part of the two FFCs in the longitudinal direction together with the convex strip, and an interposition piece that enters between the two FFCs on both sides of the elastic pressing piece. It consists of what was formed integrally.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1
1 and 2 show an embodiment of the present invention. This slide switch uses two FFCs 11A and 11B. Each FFC 11A, 11B is obtained by covering both sides and both side edges of a tape-like conductor 12 continuous in the longitudinal direction with an insulating film 13 such as a laminate film, and is generally commercially available. Each of the two FFCs 11A and 11B has a tape-like conductor 12 exposed by removing the insulating film 13 on one side in a part in the longitudinal direction. 12e is a conductor exposed part. The two FFCs 11A and 11B are arranged so that the conductor exposed portions 12e face each other at the same position in the longitudinal direction.
[0007]
The slide switch includes a slider 14 that can slide in the longitudinal direction while sandwiching two FFCs 11A and 11B. The slider 14 sandwiches a lower support piece 16 having a ridge 15 for lifting a part of the lower FFC 11B in the longitudinal direction from the lower surface, and a part of the two FFCs 11A and 11B in the longitudinal direction together with the ridge 15. The elastic pressing piece 17 to be attached and the interposition piece 18 that is interposed between the two FFCs 11A and 11B on both sides of the elastic pressing piece 17 are integrally formed. The material of the slider 14 is a synthetic resin such as PP (polypropylene), PBT (polybutylene terephthalate) or nylon, or a metal.
[0008]
FIG. 1A shows a state in which the slider 14 is in contact with the upper and lower tape-shaped conductors 12 with the positions of the conductor exposed portions 12e of the two FFCs 11A and 11B in between, that is, in a switch-on state. When the slider 14 is slid to the right, for example, from this state, the result is as shown in FIG. That is, the slider 14 is in a state where the upper and lower tape-shaped conductors 12 are insulated by sandwiching a position other than the exposed conductor portions 12e of the two FFCs 11A and 11B, that is, in a switch-off state. Thereafter, the slider 14 is slid leftward to return to the state shown in FIG. This slide switch performs the on / off operation as described above.
[0009]
This slide switch is easy to manufacture because it is sufficient to remove a part of the FFC insulation film and combine the sliders. Moreover, since the FFC can be used as a lead wire as it is, there is no need for lead wire connection and high reliability. Sex can be obtained.
[0010]
[ Reference example ]
FIG. 3 shows a reference example of the present invention. This slide switch uses one FFC 11 having two tape-like conductors 12A and 12B. The FFC 11 has a part of the longitudinal direction in which the insulating film 13 on one side is removed to expose the two tape-shaped conductors 12A and 12B. The slider 14 has a structure in which a conductive brush 20 is attached to the inside of a frame 19 formed so as to surround a part of the FFC 11 in the longitudinal direction. The material of the frame 19 is a synthetic resin such as PP, PBT, or nylon. The conductive brush 20 is formed of a metal plate having spring elasticity (copper alloy such as brass or phosphor bronze) so as to straddle the two tape-shaped conductors 12A and 12B, and the conductor 19 of the FFC 11 is exposed by the frame 19 It can be pressed against the surface on which 12e is formed. The tip of the conductive brush 20 is bent upward beyond the thickness of the insulating film 13.
[0011]
3A and 3B, the conductive brush 20 of the slider 14 is in the position of the conductor exposed portion 12e of the FFC 11, and the two tape-shaped conductors 12A and 12B are conducted through the conductive brush 20. In other words, the switch is on. If the slider 14 is moved to the right or left in FIG. 3B from this state, the conductive brush 20 rides on the insulating film 13 of the FFC 11, so that the switch is turned off. This slide switch performs the on / off operation as described above.
[0012]
[ Other reference examples ]
Shows the case of using the FFC with tape-shaped conductor of Reference Example in Article 2 of FIG. 3, tape-shaped conductor 12A of Article 4 In example embodiment, 12B, also be used FFC11 with 12C it can. If a conductor exposed portion 12e is formed on one side of the FFC 11 in the arrangement as shown in the figure, and a slider (not shown) having a conductive brush straddling each tape-like conductor 12A, 12B, 12C is combined with this, A slide switch for turning on and off a plurality of circuits can be configured. In yet implementation embodiment and reference examples described above, when exposing the tape-like conductor, may be removed on both sides of the insulating film FFC.
[0013]
【The invention's effect】
As described above, the slide switch of the present invention is easy to manufacture because it is only necessary to remove a part of the FFC insulating film and combine the slider, and the FFC can be used as a lead wire as it is. There is an advantage that reliability is improved without the need for connection.
[Brief description of the drawings]
1A and 1B show an embodiment of a slide switch according to the present invention, in which FIG. 1A is a cross-sectional view in a switch-on state, and FIG. 1B is a cross-sectional view in a switch-off state.
FIG. 2 is a perspective view of a slider used in the slide switch of FIG.
3A and 3B show a reference example of the present invention, in which FIG. 3A is a cross-sectional view, and FIG.
FIG. 4 is a plan view showing another example of an FFC used in a slide switch which is a reference example of the present invention.
FIG. 5 is a perspective view showing a schematic configuration of a conventional slide switch.
[Explanation of symbols]
11A, 11B, 11: FFC (flexible flat cable)
12, 12A, 12B, 12C: Tape-shaped conductor
12e: Conductor exposed part
13: Insulating film
14: Slider
15: ridge
17: Elastic pressing piece
19: Frame
20: Conductive brush

Claims (1)

Two FFCs (flexible flat cables) from which the insulating film is removed in a part of the longitudinal direction to expose the tape-shaped conductor are disposed so that the conductor exposed portions face each other at the same position in the longitudinal direction. A slide switch provided with a slider that is slidable in the longitudinal direction of the FFC, wherein the slider includes a lower support piece having a protrusion that lifts a part of the lower FFC in the longitudinal direction from the lower surface, and the protrusion A slide comprising: an elastic pressing piece for sandwiching a part in the longitudinal direction of two FFCs; and an interposition piece between two FFCs formed on both sides of the elastic pressing piece. switch.

Images