JPH09134639A - Switch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch device whose structure is simplified and cost can be reduced. SOLUTION: When a depressing operation member 32 is advanced, the tip of a pressing piece 35 comes into contact with an upper end part of a first inclined face 45a, and slidingly moves on the first inclined face 45a along a side surface on the first inclined face 45a side of a partition wall 45c, and the first inclined face 45a relatively moves in the rightward direction to the pressing piece 35, and a contact holder 37 moves in the rightward direction. When the pressing piece 35 reaches the lower end of the first inclined face 45a, a movable contact point 39 is connected to both fixed contact points 40 and 41. When rotational operation of a lever 33 is released, the depressing operation member 32 retreats, and the depressing piece 35 separates from the lower end of the first inclined face 45a. When the depressing piece 35 gets over the upper end of the partition wall 45c, it returns to a neutral position by crossing the partition wall 45c by a coil spring 36.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch device, and more particularly to a switch device suitable for a dimmer switch for switching headlights of a vehicle between a high beam and a low beam.

[0002]

2. Description of the Related Art In a conventional dimmer switch 10, as shown in FIG. 4, an holder 12 is attached to a case 11 so that the holder 12 can move forward and backward, and a return spring 13 urges the holder 12 in a backward direction so that the holder 12 has a truncated cone shape. The pusher 15 is mounted so as to be swingable right and left via the coil spring 14, and is elastically held by the coil spring 14 at a neutral position parallel to the advancing and retracting direction of the holder 12. A cam 16 is attached to the case 11 by a pivot 17 so as to be rotatable left and right. The cam 16 has a cam surface 16c, which is formed at one end and has a mountain-shaped convex portion 16a and valley-shaped concave portions 16b that are continuously provided on both sides of the mountain-shaped convex portion 16a.
The pivot 17 is arranged on the center line of the presser in the neutral position so that the tip of the No. 5 faces the chevron convex portion 16a. Further, a contact holder 19 having a movable contact 18 is attached to the case 11 so as to be capable of reciprocating left and right, and a cam 16
The case 11 moves back and forth in conjunction with the left and right rotation of the case 11.
The movable contact 18 is linked to the cam 16 so that the movable contact 18 comes into contact with and separates from the fixed contacts 20 and 21 fixed to the bottom of the. According to the dimmer switch 10 having such a configuration, when the holder 12 is moved forward as shown by the arrow A in FIG. 3 by the turning operation of the lever 22, the tip of the pressing element 15 presses the right side surface of the chevron convex portion 16a. , The cam 16 is reversed in the clockwise direction. As the contact holder 19 moves to the left,
The movable contact 18 contacts both fixed contacts 20 and 21, and the two fixed contacts 20 and 21 are electrically connected.

[0003]

The above-mentioned conventional dimmer switch 10 is rotatable by the pivot 17 separately from the contact holder 19 in order to convert the forward movement of the pusher 15 into the left and right reciprocating movement of the contact holder 19. Since the cam 16 attached to the above is used, the structure becomes very complicated and the cost becomes high. In view of such problems, it is an object of the present invention to provide a switch device that has a simple structure and can reduce costs.

[0004]

The invention according to claim 1 is
A contact holder that has a movable contact and is mounted on a case so that the movable contact comes in contact with and separates from a fixed contact by reciprocating left and right, a first inclined surface provided parallel to the moving direction of the contact holder, and this first inclination. A contact holder, which is provided in parallel with the surface and has a second inclined surface having an inclination opposite to that of the first inclined surface, and a partition wall which divides the boundary between the inclined surfaces such that the upper end side of each inclined surface is wider than the lower end side. , A cam part that is integrally provided with the case, a push operation member that is assembled to the case so as to be able to move forward and backward and is urged in a backward direction by a return spring, and a swing operation in a direction that crosses the partition wall via a spring in the push operation member. And a pusher that is elastically held at a neutral position parallel to the operating member by the spring and has a tip facing the partition wall at the neutral position. The pushing element is characterized in that the contact holder is moved horizontally to the one direction by sliding the upper end of one of the inclined surfaces of the cam portion along one side of the partition wall to the lower side

[0005]

According to the invention of claim 1, as a means for converting the forward movement of the pusher into the left and right reciprocating movement of the contact holder, the partition for partitioning the boundary between the first and second slopes and both slopes. Since the cam portion composed of the wall is provided integrally with the contact holder, the structure is simplified and the cost can be reduced.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the drawings. FIG. 1 shows a dimmer switch 30 according to an embodiment of the present invention. The dimmer switch includes a case 31 having a mounting port 31a. Mounting port 31
A pressing operation member 32 is attached to a so as to advance and retreat by a turning operation of a lever 33, and is biased in a backward direction by a pair of left and right return springs 34 and at the same time as the mounting opening 31a.
The hook 31b provided at the end of the is engaged with the hook 32a of the pressing operation member 32 and is prevented from coming off. The pressing operation member 32 is formed with a fitting concave portion 32b for fitting the rear end portion of the pressing element 35 and a hollow portion 32c for mounting the frustoconical coil spring 36. The rear end of the pusher 35 is mounted in the fitting recess 32b so as to be swingable in a predetermined direction, which will be described later, and a coil spring 36, as shown in FIG. 1, provides a neutral position parallel to the forward / backward direction of the pressing operation member. It is elastically held by.

A contact holder 37 is attached to the case 31 so as to be capable of reciprocating left and right along the bottom surface of the case 31 and a guide plate 38 integrally formed with the case 31. Ribs 3 projecting integrally with the contact holder 37
A movable contact 39 having a substantially U-shaped cross section and a spring 40 are attached to 7a, and a spring 40 is used to obtain a required contact pressure between a pair of fixed contacts 41 and 42 fixed to the bottom surface of the case 31. It is biased toward the bottom surface of the case 31. Further, a moderation ball 43 and a spring 44 are mounted in a hole 37b formed in the bottom surface of the contact holder 37, and the ball 43 is urged by the spring 44 so as to be pressed against a moderation crest 31c provided in the bottom surface of the case. Further, the contact holder 37 is integrally provided with a cam block 45. As shown in FIGS. 2 and 3, the cam block 45 is provided in parallel with the first inclined surface 45a provided so as to be parallel to the lateral movement direction of the contact holder 37 and the first inclined surface 45b. 1 inclined surface 45
It has a second inclined surface 45b having an inclination opposite to that of a, and both inclined surfaces 45, 45b are partitioned by one partition wall 45c. The partition wall 45c has both inclined surfaces 4a and 45b so that the upper end side is wider than the lower end side.
The boundary between 5a and 45b is divided. The pusher 35
In the neutral position, the tip is mounted so that the tip thereof faces the upper end of the partition wall 45c and can swing in a direction crossing the partition wall 45c.

The dimmer switch 30 according to the present embodiment has the above-mentioned structure. When the pressing operation member 32 is moved forward as shown by an arrow A in FIG.
The tip of the pusher 35 comes into contact with the upper end of the first slope 45a,
As shown by the arrow B in FIG. 3, the first slope 45 of the partition wall 45c.
It slides on the 1st slope 45a along the side surface on the a side. As a result, the first inclined surface 45a moves to the right relative to the presser, and the contact holder 37 moves to the right as indicated by arrow C in FIG. The pusher 35 has the first slope 45.
When reaching the lower end of a, the moderation ball 43 rides over the moderation crest 31c, the movable contact 39 is connected to both the fixed contacts 40 and 41, and the two fixed contacts 40 and 41 are electrically connected. When the turning operation of the lever 33 is released, the pressing operation member 32 is retracted by the return spring 34, and the pressing element 35 is separated from the lower end of the first inclined surface 45a. When the pusher 35 crosses the upper end of the partition wall 45c, the coil spring 36 crosses the partition wall 45c and returns to the neutral position as indicated by an arrow D in FIG. In this state, the pusher 35 is not attached to the second inclined surface 45b.
Since the lever 33 is located on the upper end, the pressing element 35 slides on the second inclined surface 45b when the lever 33 is rotated to move the pressing operation member 32 forward. Therefore, the contact holder 37 moves leftward. According to the dimmer switch 30 according to the present embodiment, the first and second slopes 45a, 45
b and the partition wall 4 that divides the boundaries between the slopes 45a and 45b
The forward movement of the pusher 35 can be converted into the left and right reciprocating movements of the contact holder 37 by the cam block 45 composed of 5c, and the cam 16 rotatably assembled by the pivot 17 which is conventionally required can be omitted, so that the structure is simple. Therefore, the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a dimmer switch according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a cam block of the dimmer switch.

FIG. 3 is a plan view showing the cam block.

FIG. 4 is a sectional view showing a part of a conventional dimmer switch.

[Explanation of symbols]

30 ... Dima switch, 31 ... Case, 32 ... Push operation member, 34 ... Return spring, 35 ... Pusher, 36
… Coil spring, 37… Contact holder, 39
... movable contact, 40, 41 ... fixed contact, 45 ... cam block, 45a ... first inclined surface, 45b ... second inclined surface, 45c
… Partition walls.

Claims (1)

[Claims] 1. A contact holder, which has a movable contact and is assembled to a case so that the movable contact comes in contact with and separates from a fixed contact by reciprocating left and right, and a first inclined surface provided in parallel with the moving direction of the contact holder. , A second inclined surface provided in parallel with the first inclined surface and having an inclination opposite to that of the first inclined surface, and a partition wall for partitioning the boundaries between the inclined surfaces such that the upper end side of each inclined surface is wider than the lower end side The cam part is integrally provided in the contact holder, the pressing operation member is attached to the case so as to be able to move forward and backward and is biased in the backward direction by the return spring, and the pressing operation member traverses the partition wall via the spring. And a pusher that is elastically held by the spring in a neutral position parallel to the operating member and has a tip facing the partition wall at the neutral position. When the pusher slides along the one side surface of the partition wall from the upper end side to the lower end side of the one inclined surface of the cam portion as the material advances, the contact holder moves in one of the left and right directions. Switch device to do.