JPH0637555Y2 - Car wiper washer switch - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to an automobile wiper washer switch in which a wiper switch and a washer switch are integrated.

[Prior art and its problems]

A wide variety of wiper washer switches for automobiles as described above are known. In general, these switches are provided in the cockpit of an automobile, so it is desirable to make them as compact as possible due to the restrictions on the arrangement with other switches, and also from the viewpoint of traffic safety, those with excellent operability are required. It That is, it is desirable to use a small-sized mechanism that performs a reliable operation with a simple operation. Examples of conventional techniques for such a wiper washer switch for an automobile include the following. That is, as shown in the schematic configuration of FIG. 4, it is a seesaw type switch having a fulcrum portion 30 in the center, and
The wiper switch 34 and the washer switch 33 are switched by alternately pressing the left and right end portions 31 and 32 of 30. Both the wiper switch 34 and the washer switch 33 are turned off when neither of the both end portions 31, 32 is pushed in. In the case of this seesaw type switch, for example, if the right end 32 is a washer switch 33, the washer switch 33 needs an automatic return mechanism, so the right end 32 is biased in the return direction. Spring means 35 are attached. This spring means 35 is not inconvenient if it is considered only with respect to the operation of the washer switch 33, but if the operation is considered together with the operation of the wiper switch 34, the following problems occur. That is, for example, assuming that the spring means 35 is configured as a coil spring, when the washer switch 33 is pushed in, the coil spring 35 elastically deforms in the compression direction, and at the time of return, the elastic deformation is restored and only returns to the initial length. However, when the wiper switch 34 is pushed in, the coil spring 35 further extends from the initial length, and the elasticity of the coil spring 35 is easily lost. As a result, the washer switch
The 33's return will be poor, or the stability at the neutral position (position where both the washer switch and wiper switch are off) will be poor. Further, since the arm of the switch extends from the fulcrum portion 30 to both sides, the total length of the arm tends to be long, which is a disadvantageous structure for downsizing.

[The purpose of the device]

The present invention has been devised in order to effectively solve these problems in view of the problems of the prior art as described above. Therefore, it is an object of the present invention to provide a wiper washer switch for an automobile which achieves downsizing and is easy and reliable in operation.

[Means for Solving the Problems]

The vehicle wiper washer switch according to the present invention is configured as follows in order to solve the above-mentioned conventional technical problems and to achieve the object thereof. That is, the first movable contact is provided in the intermediate portion, one end of which is swingably supported, and the other end of which is a protrusion protruding so as to reciprocate in the rotational radius direction of the swing motion and the protrusion. A first movable contact holder of a washer switch having an urging means for elastically urging the child outward in the radial direction, and a central portion of the washer switch is generally recessed outward in the radial direction from a shaft support portion of the first movable contact holder. It has a V-shaped cross-sectional shape, and has an inclined surface with which the tip end of the protrusion slides while advancing and retracting with the swing of the first movable contact holder, and a second movable contact in the middle portion. A second movable contact holder of a wiper switch that can be linearly reciprocated so as to stop at both ends, and one end is fixed to a shaft support side end of the first movable contact holder and can swing together with the first movable contact holder. And the other end due to the swinging motion And a lever member for pressing one end of the second movable contact holder to the linear movement direction of the second movable contact holder.

[Action]

According to the vehicle wiper washer switch of the present invention, the washer switch is turned on and off by the swing of the first movable contact holder, and the wiper switch is turned on and off by the second movable contact holder.
It is turned on / off by the linear reciprocating movement of the movable contact holder. With respect to the washer switch, if the lever member is swung about the shaft supporting portion of the first movable contact holder,
The movable contact holder also swings integrally with the lever member about its shaft support. As the first movable contact holder swings, the protrusion slides on a slope having a V-shaped cross section. Since the protrusion can be advanced and retracted by elastic deformation of the biasing means, and the central bent portion of the roughly V-shaped slope is at the farthest distance from the pivotal support, the protrusion is closer to the upper side of the slope. The movable contact holder retreats in the form of being immersed therein, and the more it is in contact with the lower side of the slope (the central bent portion side), the more it protrudes from the first movable contact holder. That is, the state in which the protrusion is in contact with the lowermost end of the roughly V-shaped slope is the most stable state, and the amount of elastic deformation of the biasing means is higher as the position of the protrusion in contact with the slope is higher. Since the first movable contact holder becomes largely unstable, the first movable contact holder tries to restore to a stable position (referred to as a neutral position) each time it swings. A position in which the first movable contact holder is moved from the neutral position in any one direction is a first bias position, and a position in which the first movable contact holder is moved in the other direction is a second bias position. When the movable contact is turned on, the first movable contact is turned off at the second biased position and the neutral position. With respect to the wiper switch, the second movable contact holder is capable of linear reciprocating movement, and is stopped by the heart cam mechanism at approximately both folded positions of the reciprocating movement. When linearly moving the second movable contact holder from this stop position,
In both the case of "forward" and the case of "return", the second movable contact holder may be temporarily pushed in the direction of "forward" and then the pressing force may be removed. This pressing force is obtained by moving the lever member by the swing width because it does not contact the second movable contact holder when swinging. Since this lever member swings integrally with the first movable contact holder, when the lever member swings to move the first movable contact holder from the neutral position to the second biased position, the lever member is moved. Applies the pressing force to the second movable contact holder.
That is, when the on / off switching operation of the wiper switch is performed, the washer switch is always off. Further, when the lever member is swung to turn on the washer switch, the lever member swings in the direction in which it is separated from the second movable contact holder, and therefore the wiper switch is not operated.

【Example】

A preferred embodiment of the present invention will be described below with reference to FIGS.
It will be described with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of an automobile wiper washer switch according to the present invention, and FIG. 2 is a II-I of FIG.
3 is a sectional view taken along the line III-III in FIG. 1. In this embodiment, the first box 1 having the first fixed contact 2 of the wiper switch and the second box 3 having the second fixed contact 13 of the washer switch are integrally configured and housed in one housing 4. ing. First
A first movable contact holder 6 (hereinafter simply referred to as a first holder 6) having a first movable contact 5 in the box 1 and a second movable contact having a second movable contact 7 in the second box 3 A holder 8 (hereinafter simply referred to as the second holder 8) is housed in each. The first box 1 has a part of the upper end surface opened,
The first holder 6 is inserted through the opening 9. About 80% of the entire length of the first holder 6 is housed in the first box 1, and is pivotally supported about the first box 1 in a swingable manner in the vicinity of the penetrating portion. Reference numeral 10 in the figure denotes the shaft, which is fixedly attached to the first box 1. A deep hole 11 is formed along the longitudinal direction of the tip portion of the first holder 6 which is housed in the first box 1, and a compression coil spring 12 is provided on the inner side of the deep hole 11. And place it on the tip of this compression coil spring 12
A protrusion 14 is attached so as to appear and disappear from the opening. Further, two first movable contacts 5 are attached at the upper and lower portions at a substantially central portion of the entire length of the first holder 6. A slope 15 having a V-shaped cross section is formed in the first box 1 so that the protrusion 14 at the tip of the first holder 6 slides in and out as the first holder 6 swings. At the upper end of the first holder 6 protruding from the first box 1, a lever member extending in a direction substantially perpendicular to the first holder 6 is formed.
The base end 17 of 16 is fixed. Therefore, the first holder 6 can be swung around the shaft 10 by pushing in and pulling up by holding the tip end portion 18 of the lever member 16. In FIG. 1, when the tip end portion 18 of the lever member 16 is pulled upward, the first holder 6 rotates clockwise about the shaft 10, and the first movable contact 5 comes into contact with the first fixed contact 2 and the washer. Turn on the switch. When the lever member 16 is released from this state, the compression coil spring 12 is elastically expanded so as to push the protrusion 14 out of the deep hole 11, and the protrusion 14 descends on the slope 15. By this operation, the first holder 6 and the lever member 16 rotate counterclockwise around the shaft 10,
The washer switch is restored to the initial state and turned off. A second holder 8 is mounted in the second box 3 so as to be linearly reciprocally movable in the vertical direction in the figure. A compression coil spring 19 is mounted between the lower end surface of the second holder 8 and the inner bottom surface of the second box 3, and the second holder 8 is always biased upward. A “scissor spring 20” is fixed to the upper end of the second box 3, and the free end 22 of the spring 20 is fixed.
A heart cam mechanism 23 is configured together with the heart cam 21 formed on the second holder 8 to guide the. Each time the second holder 8 is pushed in from above, it stops at a predetermined upper and lower position, and at the lower stop position, the second movable contact 7 and the second fixed contact 13
Comes into contact with and the wiper switch is turned on. Above the upper end surface of the second holder 8, there is a protrusion 24 that is formed in the middle of the lever member 16 and projects downward. In the state shown in FIG. 1, that is, in the state where the protrusion 14 of the first holder 6 in the washer switch is in contact with the lowermost end of the slope 15 and the second holder 8 in the wiper switch is in the upper stop position. The protrusion 23 of the lever member 16 is in contact with the upper end surface of the second holder 8. When the tip end portion 18 of the lever member 16 is pushed down in the state of FIG. 1, the second holder 8 moves downward by the heart cam mechanism 23 and stops at the lower stop position, and the second movable contact 7 moves to the second position.
The fixed contact 13 is contacted and the wiper switch is turned on.
When the lever member 16 is released from that state, the lever member 16
Is due to the restoring force of the first holder 6 and the protrusion 14 of the first holder 6
Is in contact with the lowermost end of the slope 15. When the tip portion 18 of the lever 16 is pushed downward again from this state, the second holder 8 is pushed downward again, and the washer switch moves the second holder upward by the heart cam mechanism 23 and stops at the upper stop position. . Second in this state
The movable contact 7 and the second fixed contact 13 are separated from each other to turn off the wiper switch. The on / off switching operation of the wiper switch is only an operation in a direction of pushing the tip end portion 18 of the lever member 16, and when the operation is performed, the first holder 6 has the first movable contact 5 and the first fixed contact 2 Since there is only a swinging motion in the direction away from, that is, in the counterclockwise direction in FIG. 1, an operation independent of the washer switch is performed. The on / off switching operation of each of the above-mentioned washer switch and wiper switch elastically deforms the compression coil springs 12 and 19 only in the compression direction in any case, so the elasticity of the coil springs 12 and 19 is not impaired. Therefore, a reliable restoration operation can always be expected in each switch. Further, since the lever member 16 extends only one way from the shaft 10 which is the swing center thereof, its overall length is also shortened, which is a structure advantageous for downsizing the switch.

[Effect of device]

As is clear from the above description, according to the present invention, the following excellent effects are exhibited. That is, downsizing of the switch is achieved, and reliable operation is performed with a simple structure.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of an automobile wiper washer switch according to the present invention, and FIG. 2 is a II-I of FIG.
FIG. 3 is a sectional view taken along the line I, FIG. 3 is a sectional view taken along the line III-III in FIG. 1, and FIG. 4 is a schematic view showing a schematic configuration of a wiper washer switch in the prior art. DESCRIPTION OF SYMBOLS 1 ... 1st box, 2 ... 1st fixed contact, 3 ... 2nd box, 4 ... Housing, 5 ... 1st movable contact, 6 ... 1st movable contact holder, 7 ... 2nd movable contact, 8 ...
Second movable contact holder, 10 ... Shaft, 12 ... Compression coil spring as biasing means, 13 ... Second fixed contact, 14 ... Projector, 15 ... Slope, 16 ... Lever member, 19 ... Compression coil spring, 20 Scissors Shaped spring, 21 ... Heart cam, 23 ... Heart cam mechanism

Claims (1)

[Scope of utility model registration request] 1. A first movable contact (5) is provided at an intermediate portion, one end of which is swingably supported, and the other end of which is reciprocally movable in a radial direction of the swing motion. Sprouting (1
4) and a first movable contact holder (6) of a washer switch having an urging means (12) for elastically urging the protrusion (14) outward in the radial direction, and the first movable contact holder (6). ) Has a roughly V-shaped cross-section so that the central portion is recessed radially outward from the shaft support portion,
Along with the swing of the first movable contact holder (6), the tip end of the protrusion (14) has an inclined surface (15) that slides in and out while advancing and retracting, and a second movable contact (7) in the middle part, The second movable contact holder (8) of the wiper switch that can be linearly reciprocated so as to stop at both ends by the heart cam mechanism (23)
One end is fixed to the end of the first movable contact holder (6) on the shaft support side and can swing together with the first movable contact holder (6), and the other end is moved by the swing motion. A wiper washer switch for an automobile, comprising: a lever member (16) for pressing one end of the second movable contact holder (8) in a linear movement direction of the second movable contact holder (8).