JPH0416331Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a switch used to remotely control various devices such as a rear view mirror installed in a car, and in particular relates to a switch case and the operation of the switch. The present invention relates to an on-vehicle operating switch characterized by having a passage for removing foreign matter such as sand, dirt, dust, etc. that has entered between the switch and the switch.

[Prior art and its problems] For example, a switch that operates the rearview mirror of a car is usually installed sideways to the instrument panel inside the vehicle, so foreign objects such as sand may enter the switch operation part. This was relatively rare.

However, in recent years, the switch is often installed facing upwards in a console box placed on the floor of the vehicle interior, and in this case, the switch is installed so that the operation part of the switch is exposed from the top surface of the switch case. Therefore, this exposed surface is likely to be covered with sand, dust, and dirt brought into the vehicle. In addition, these sands can easily enter the gap between the switch case and the operating section, and if this foreign material adheres to the protrusions on the sliding fitting surface between the case and the operating section, it will impede the rotation of the operating section. This has caused a problem in that normal operations cannot be performed smoothly, or in extreme cases, the operating section may not move at all.

[Means for Solving the Problems] In view of the above-mentioned problems that were inevitable with the conventional ones, the present invention has been developed to solve the problem when minute foreign matter such as sand enters the fitting part between the case and the operation part. Therefore, it is an object of the present invention to provide an on-vehicle switch that can promptly remove this foreign material and allow normal operation of the operating section.

In order to achieve the above-mentioned object, the present invention is such that the operating section of the on-vehicle switch is fitted into a switch case whose top surface is open so that it is exposed from the open top surface, and the peripheral side of the fitting section is fitted. In an on-vehicle operating switch that is movably positioned on the inner surface of a switch case, a protrusion that abuts and engages with the inner surface of the switch case is partially protruded from the circumferential side of the fitting portion. In addition, a passage is provided between the projecting edges for removing minute foreign matter. Further, the present invention may be configured such that a dust hole is provided below the fitting portion and penetrates the side surface of the switch case, or a downwardly inclined surface is provided in the passage for the foreign matter.

[Example] Next, the present invention will be specifically described based on an example shown in the drawings.

The drawings show a switch for operating the rearview mirror of a car, in which Fig. 1 is a plan view showing the assembled state of the switch, Fig. 2 is a longitudinal cross-sectional view schematically showing the internal structure of the switch, and Fig. 3 is a cross-sectional view schematically showing the internal structure of the switch. FIG. 2 is a plan view showing the operation section of the switch. In Figures 1 to 3, 1 is a cylindrical switch case body with an open top surface, 2 is a side wall of the case, 2a is a frame-shaped flange provided at the upper end of the side wall, and 3 is an open end of the case. The operating knob has a U-shaped cross section and is movably fitted so as to protrude somewhat from the top surface. The fitting part 3a of this operation knob has the flange 2a.
A projecting edge 3b that is engaged with the lower side of the operating knob 3 is partially provided as will be described later, and the operating knob 3 is positioned at a predetermined position by this projecting edge 3a and the frame-shaped collar 2a. Further, in the center of the operation knob 3, a left and right mirror selection knob 4 is provided so as to protrude upward from the knob surface. This knob is mounted so that it can rotate from side to side using a pin 5 as a fulcrum, and a sliding block 6 is provided at the bottom of the knob.
A sliding contact 6a is assembled on the lower surface thereof. Reference numeral 7 denotes a base that surrounds the base of the knob 4, the sliding block, and the sliding contact, and the base 7 and the sliding contact 6a are mounted on a support substrate 8. Reference numeral 9 denotes a printed circuit board disposed below the operating knob 3 via an insulating sheet 10 made of a rubber member as shown in FIG. 2, and 11 indicates the surface of the insulating sheet 10 corresponding to the operating knob. A movable contact (not shown) is attached to the inner surface of the top of the bulge. When this bulge 11 is pressed by the operating knob 3, the movable contact and the printed circuit board come into contact and become electrically conductive, so that the tilt angle of the mirror itself can be adjusted vertically and horizontally.

The general configuration of the switch in this embodiment is as described above, but in the present invention, a passage 12 for removing minute foreign matter is provided at the fitting portion between the switch case and the operation knob in this vehicle-mounted switch. A projecting edge 3b is formed. That is, as shown in FIG. 3, on the circumferential side of the fitting part 3a, there are a plurality of positioning protrusions 3b which are inserted into the lower side of a flange 2a provided in the shape of a frame on the inner surface of the switch case.
At the same time, as shown in FIG. 2, a passage 12 is formed on both sides of each projecting edge or between the projecting edges for removing minute foreign matter M such as sand.

4 and 5 show another embodiment of the present invention, in which a projecting portion 13 is formed around the entire circumference of the fitting portion 3a, and a part of the projecting portion is connected to the switch case 1. The engaging positioning ridges 14 are formed, and the upper surface of the projecting portion between the ridges is a downwardly inclined surface 1.
5 to form a passage 16 for allowing minute foreign matter M to fall.

FIG. 6 shows another embodiment of the present invention, in which a dust hole 17 is provided on the side surface of the switch case 1, passing through the inside and outside of the case.

[Function] As described above, according to the configuration of the present invention, even if minute foreign matter such as sand enters the gap between the operating section of the switch and the case, these foreign matter will not be formed on the circumferential side of the fitting part. The dust quickly falls onto the insulating sheet 10 below the operation via the passage 12 or 16 provided between the flange 3b or 14, or passes through the slope 15 and exits the dust hole 17 to the outside of the case. will be excluded. Therefore, the movability of the switch operating section is not inhibited and the operability thereof is not deteriorated.

[Effects of the invention] As described above, according to the invention, even if minute foreign matter such as sand enters the gap between the switch operation part and the switch case, it can be quickly removed. This makes it possible to prevent problems such as malfunction of the operating section, which conventionally often occur due to the intrusion of foreign matter.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an assembled state of a switch showing an embodiment of the present invention, Fig. 2 is a vertical cross-sectional view schematically showing the internal structure of the switch, and Fig. 3 is a plan view showing the switch operating section. FIG. 4 is a plan view of a switch operating section showing another embodiment of the present invention, FIG. 5 is a longitudinal cross-sectional view of a portion of the same, and FIG. 6 is a longitudinal cross-sectional view of a portion of the same as the above. . 1... Switch case, 2... Side wall of the case,
2a...Brim, 3...Operation knob, 3a...Knob fitting part, 3b...Protrusion, 4...Knob, 5...Pin,
6...Sliding block, 6a...Sliding contact,
7...Base, 8...Supporting board, 9...Printed circuit board, 10...Insulating sheet, 11...Bulging portion, 1
2... passage, 13... overhanging portion, 14... ridge, 15... slope, 16... passage, 17... dust hole.

Claims (1)

[Claims for Utility Model Registration] 1. An operating section of a vehicle-mounted switch is fitted into a switch case with an open top surface so as to be exposed from the open top surface, and the peripheral side of the fitted section is fitted into a switch case with an open top surface. In an on-vehicle operation switch which is positioned movably on the inner surface, a projecting edge that abuts and engages with the inner surface of the switch case is partially protruded from the circumferential side of the fitting part, and An on-vehicle operating switch characterized in that a passage is provided between the projecting edges for removing minute foreign matter. 2. The in-vehicle operation switch according to claim 1, wherein a hole is provided in the side surface of the switch case below the fitting portion and penetrates inside and outside the case. 3. Utility model registration claim 1 or 2, in which the protruding edge provided on the switch operating section is pressed into contact with the lower side of the frame-shaped flange provided at the upper end of the switch case. In-vehicle operation switch. 4. The on-vehicle operating switch according to any one of claims 1 to 3 of the utility model registration claim, wherein the passage for removing minute foreign matter has a downwardly inclined surface.