JPH069404Y2 - Slide switch - Google Patents

Description

Detailed Description of the Invention <Field of the Invention> The present invention relates to a lever-operated slide switch.

<Prior art and its problems> As a conventional switch of this kind, a lever for operation of a slider which is horizontally movably arranged in a switch case is pivotally attached to the switch so as to be rotatably mounted in the switch case. The normally-closed and normally-open fixed terminal pieces are arranged at predetermined intervals in the moving direction of the slider, and the common terminal piece is arranged between the fixed terminal pieces and inside the switch case. In addition, by connecting the movable piece that performs switching operation by displacing from the position across the normally closed fixed terminal piece and the common terminal piece to the position across the common terminal piece and the normally open fixed terminal piece by operating the lever, There is one in which a contact pressure spring is interposed between the slider and the movable piece.

That is, when the lever is operated while the normally closed fixed terminal piece and the common terminal piece are electrically connected by the movable piece, the movable piece is driven through the slider, and the normally closed fixed terminal piece is And the common terminal piece become non-conductive, and the common terminal piece and the normally open fixed terminal piece are switched to the conductive state.

However, as shown in FIG. 3, the movable terminal 10 is arranged in the common terminal piece 103 disposed between the pair of fixed terminal pieces 101 and 102.
Since only one rib 105 that contacts 4 is formed,
Only the two switch operating states shown in FIGS. 7A and 7B are obtained, and the sliding force of the movable piece 104 is concentrated on the rib 105,
Both wears quickly and is inferior in durability.

<Purpose of the Invention> The present invention has been made in order to solve the above-mentioned problems of the conventional one, and an object thereof is to provide a slide switch capable of improving the durability of a movable piece or the like and increasing the operation mode. I am trying.

<Structure and Effect of the Invention> In the slide switch according to the present invention, the slider that receives the spring force of the return spring is set to be horizontally movable in the switch case, and the operating lever of this slider can be rotated to the switch case. And a fixed terminal piece is fixed in the switch case at a predetermined interval in the moving direction of the slider, and a common terminal piece is arranged between the fixed terminal pieces. And a common terminal piece from a position that spans between the common terminal piece and the common terminal piece to a position that spans the common terminal piece and the other fixed terminal piece by switching the lever, and connects the movable piece to the lower side of the slider. In a slide switch in which a contact pressure spring is arranged between the movable piece and the movable piece, a pair of ribs capable of supporting the movable piece in a neutral state during the switching operation of the movable piece are formed in the common terminal piece. .

According to this invention, since the pair of ribs is provided on the common terminal piece, the sliding contact force of the movable piece is dispersed to both ribs, wear is suppressed, and the movable piece can be supported by both ribs during the switching operation. Three-point switching operation is possible, and general-purpose students can be expanded.

<Description of Embodiments> An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 are an exploded perspective view and a front sectional view showing an example of a slide switch according to the present invention.

In the figure, reference numeral 1 is a switch case, which comprises a terminal base 2 made of synthetic resin and a box cover 3 made of synthetic resin fitted to the terminal base 2. Reference numeral 4 denotes an engaging projection formed on the outer surfaces of the front and rear walls of the base 2. Reference numeral 5 denotes an engaging hole formed on both front and rear walls of the cover 3 for engaging with the engaging projection 4 in a disengageable manner. Is.

An electrically insulating slider 6 having a U-shaped cross section is set on the terminal base 2 so as to be horizontally movable in the left-right direction (directions of arrows a and b). Further, the inner wall of the cover 3 and the standing wall 6 a of the slider 6 are arranged. A return coil spring 7 made of stainless steel or the like is provided therebetween. Reference numeral 8 is a lever for operating the slider. By fitting a support shaft 9 projecting on both front and rear surfaces into a shaft hole portion 11 of an inner wall of a lever projecting opening 10 formed in the cover 3, and holding it. Is rotatably supported by the cover 3 and drives the slider 6 at the base end 8a.

Reference numerals 12 and 13 are made of brass or the like, normally closed and normally open fixed terminal pieces fixed to the terminal base 2 at predetermined intervals in the moving direction of the slider 6, and 14 are made of brass or the like, and both fixed terminal pieces are made. It is a common terminal piece fixed between the terminals 12 and 13 and fixed to the terminal base 2. Reference numeral 15 is a movable piece made of brass or the like, and a protrusion 16 formed at both sides in the front-rear direction at the center in the left-right direction is fitted in a notch 17 in the up-down direction formed on both front and rear walls of the slider 6. So as to move from a position straddling between the normally closed fixed terminal piece 12 and the common terminal piece 14 to a position straddling between the common terminal piece 14 and the normally open fixed terminal piece 13 by operating the lever 8. Is set to.

Reference numeral 18 denotes a contact pressure spring formed by bending a leaf spring made of stainless steel or the like into a substantially V shape, and is provided on a spring receiving surface formed of a V-shaped concave surface into the spring receiving portion 19 formed on the slider 6. The movable piece 15 is elastically pressed by both ends 18a and 18b.

A pair of conductive ribs 20 and 21 are formed on the common terminal piece 14 facing the movable piece 15 at a predetermined interval in the moving direction of the slider 6, and the movable ribs during the switching operation. It is set to support the piece 15 in a neutral state.

Next, the operation of the above configuration will be described.

When the operating lever 8 is in the state shown in FIG. 2, the slider 6 is displaced to the right by the spring force of the restoring coil spring 7.
Therefore, the movable piece 15 is set at a position extending between the normally closed fixed terminal 12 and the common terminal piece 14 as shown in FIG. 3 (A), and the two terminal pieces 12 and 14 are electrically connected to each other. Has become.

When the operation lever 8 is rotated clockwise about the support shaft 9, the slider 6 is moved leftward against the spring force of the return coil spring 7. In the process of moving the slider 6 to the left, the movable piece 15 is supported on the pair of ribs 20 and 21 as shown in FIG.

When the operating lever 8 is further rotated in the clockwise direction, the movable piece 15 passes through the supporting positions of the ribs 20 and 21, and then the common terminal piece 14 and the normally open fixed terminal piece 13 as shown in FIG. 3 (C).
It is set in a position that spans between
A conduction state is established between 4 and 13.

When the operation of the operation lever 8 is released, the slider 6 receives the spring force of the return coil spring 7 and moves to the right, so that the movable piece 15 also returns to its original state through the reverse operation. .

As described above, by providing the ribs 20 and 21 capable of supporting the movable piece 15 on the common terminal piece 14, it is possible to easily obtain the third switching state which is the neutral state, and the versatility of the switch is expanded. become. Moreover, since the movable piece 15 is in sliding contact with both of the ribs 20 and 21, the sliding contact force is applied to both ribs 2.
The ribs 20 and 21 and the movable piece 15 are suppressed from being worn, and the life can be extended.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 and 2 are an exploded perspective view and a front sectional view showing an example of a slide switch according to the present invention, and FIGS. 3 (A), (B) and (C) are the same. FIGS. 4 (A) and 4 (B) are explanatory views of different operation states of the slide switch, and FIG. 4 (A) and FIG. 4 (B) are configuration diagrams of essential parts showing the configuration of the conventional slide switch in different operation states. 1 ... Switch case, 6 ... Slider, 7 ... Return spring,
8 ... Operation lever, 12, 13 ... Fixed terminal piece, 14 ... Common terminal piece, 15 ... Movable piece, 18 ... Contact spring, 20, 21
…rib.

Claims (1)

[Scope of utility model registration request] 1. A slider set horizontally movable in a switch case, a return spring arranged in the switch case for applying a spring force to the slider, and a pivotally rotatably rotatably supported switch case. For operating the slider, a pair of fixed terminal pieces arranged in the switch case at a predetermined interval in the moving direction of the slider, and arranged in the switch case between the fixed terminal pieces. The common terminal piece that is connected to the lower side of the slide and spans between one fixed terminal piece and the common terminal piece by operating the lever, and between the common terminal piece and the other fixed terminal piece. The movable piece that is displaced to the straddling position and that performs the switching operation and the contact pressure spring that is disposed between the slider and the movable piece are provided, and the common terminal piece supports the movable piece that is in the switching operation in a neutral state. Possible Slide Sui Tutsi, characterized in that the formation of the rib pairs.