JPH0935575A - Operating button assembly structure for push type switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the leak of light and reset an operating button to a regular attitude without displacing the position of this operating button when it is reset relating to an operation panel. SOLUTION: An operating button 11 is provided with an operating part 12 pressed in to be resettably fitted to an assembly hole 7 of an operating panel 5 and a flange 13 protruded to a depth side periphery of this operating part 12 to be opposed to a back surface of the operating panels 5. A tilting guide surface 21 for guiding the operating button 11 reset is formed in a back surface side of the operating panel 5, on the other hand to form a sloped contact surface 15 coming into contact connectably/separably to/from the guide surface 21 in the flange 13. In this constitution, when reset the operating button 11 relating to the operating panel 5, by a positioning action of contact at the contact surface 15 against the guide surface 21, position displacement of the operating button 11 is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating button assembly structure for a push-type switch such as a vehicle heater control switch.

[0002]

2. Description of the Related Art For example, in a switch device for a heater control installed on a rear seat of a vehicle, a switch having a relatively small push stroke may be used due to a restriction of an installation space. . Conventionally, FIG. 9 and FIG.
As shown in FIG. 7, the operation button 111 for turning on / off the push-type switch is an operation portion 114 which is inserted into the assembly hole 106 of the operation panel 105 so as to be pushed and returned.
And the operation panel 10 is extended around the back side of the operation section 114.
5 is provided with a flange 113 facing the back surface. Then, after pushing the operation button 111 to operate the switch stem to turn it on and off, when the operation button 111 is released, the return force of the switch stem and the elastic force of the elastic body cause the operation button 111 to operate. It is designed to be restored to the position. When the operation button 111 is returned to the original position, the operation button is provided in the gap S between the operation portion 114 of the operation button 111 and the assembly hole 106 of the operation panel 105.
Since 111 may be rotated and returned, the cutout grooves 118 for preventing misalignment are formed on both left and right sides of the flange 113 of the operation button 111, and the rear surface of the operation panel 115 is
A guide piece 124 that fits into the notch groove 118 is provided so as to prevent the operation button 118 from being rotationally displaced by the guiding action of the notch groove 118 and the guide piece 124.

[0003]

By the way, FIG. 9 and FIG.
In the conventional device shown in FIG. 0, the operation button 111 has the flange 113 abutting against the back surface of the operation panel 105.
When the 111 is returned, the operation part 114 of the operation button 111 is in the cutout 118 of the flange 113 of the operation button 111.
There is a problem that a gap S is formed between the mounting hole 106 and the assembling hole 106, and a part of the light emitted by the illumination lamp disposed on the back side of the operation button 111 leaks out from the gap S. The purpose of this invention is
In view of the above-mentioned conventional problems, a push-type switch capable of returning the operation button to the normal posture without displacement when returning the operation button to the operation panel and preventing light leakage can be provided. It is to provide an operation button assembly structure.

[0004]

In order to achieve the above object, an operation button assembly structure of a push-type switch according to the invention of claim 1 is such that an operation button provided in an assembly hole of an operation panel is depressed. In the push button switch operation button assembly structure in which the switch is turned on / off by being operated, the operation button is an operation section that is inserted into the assembly hole of the operation panel and is removably fitted, And a flange facing the rear surface of the operation panel, the flange extending over the back side of the operation portion and facing the rear surface of the operation panel, and an inclined guide surface for returning and guiding the operation button is provided on the rear surface side of the operation panel. On the other hand, the flange is formed with an inclined contact surface that comes into contact with and separates from the guide surface, and when the operation button returns to the operation panel, the contact surface contacts the guide surface. To It is the configuration for preventing the displacement of said operating button by a positioning action that.

Therefore, when the operation button is returned, the contact surfaces of the operation button on the flange come into contact with the guide surface on the rear side of the operation panel at the mutually inclined surfaces, and the positioning operation by this contact causes the operation panel to be assembled. The displacement of the operation button with respect to the hole is prevented.

Further, as described above, when the operation button is returned to its original position, the gap between the operation portion of the operation button and the assembly hole of the operation panel is closed by the flange of the operation button. The push button switch operation button assembly structure according to a second aspect of the present invention is the push switch operation button assembly structure according to the first aspect, wherein the contact surface has a predetermined area near the peripheral edge of the flange. The guide surface is formed on one side surface of each of the plurality of recessed portions having a width dimension, while the guide surface is formed on each one side surface of a projecting piece provided on the rear surface of the operation panel with a width dimension that fits into each recessed portion. There is. Therefore, the operation button can be pushed and returned by the fitting action of the recess of the flange of the operation button and the protrusion of the operation panel. As a result, it is possible to prevent the operation button from swinging at the time of pressing the operation button and at the time of returning operation, and improve the operability of the operation button.

According to a third aspect of the present invention, there is provided a push-type switch operation button assembling structure according to the first aspect of the present invention, wherein the push-button switch operation button assembling structure is such that the abutment surface is predetermined near the peripheral portion of the flange. Is formed on one side surface of each of the projecting pieces provided with a plurality of protruding widths, and the guide surface is formed on one side surface of the recess provided on the back surface of the operation panel with a width dimension that fits into each of the protruding pieces. Has been formed. Therefore, the operation button can be pushed and returned by the fitting action of the projection of the flange of the operation button and the recess of the operation panel. As a result, it is possible to prevent the operation button from swinging at the time of pressing the operation button and at the time of returning operation, and improve the operability of the operation button.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2 which are a cross-sectional view and a perspective view showing a switch device employed in a vehicle heater control, etc. A push switch 3 and an illumination lamp 4 are provided respectively. The operation panel 5 provided on the front side of the housing 1 is provided with a square hole-like assembly hole 6 for assembling the operation button 11 at a position corresponding to the switch 3.

The operation buttons 11 which are assembled in the respective assembly holes 6 of the operation panel 5 include an operation portion 12 which is inserted into the assembly hole 6 so as to be able to be pushed in and returned, and a periphery of a rear side of the operation portion 12. It is integrally provided with a flange 13 which is bulged and faces the rear surface of the operation panel 5. Further, on the back surface of the operating portion 12, an operating portion 14 for pushing the stem 3a of the switch 3 to turn the switch 3 on and off is provided in a protruding manner.

Further, the stem 3a of the switch 3 and the operating portion
An elastic body 7 such as sponge rubber is appropriately elastically compressed and interposed between the elastic member 14 and the elastic member 14. When the operation button 11 is pushed, the operating portion 14 of the operation button 11 pushes the stem 3a while elastically compressing the elastic body 7, whereby the switch 3 is turned on or off. When the operation button 11 is released, the operation button 11 is returned to its original position by the restoring force of the stem 3a of the switch 3 and the elastic force of the elastic body 7.

In order to guide the operation button 11 back to its original position, an inclined guide surface 21 is formed on the back side of the operation panel 5, while the flange 13 has the guide surface 21.
An inclined contact surface 15 is formed so as to come into contact with and separate from the contact surface 15. In this embodiment, as shown in FIG. 4, on the rear surface side of the operation panel 5, there are provided protrusions 22 having a triangular cross-section at four positions in total, that is, at the upper, lower, left and right central portions around the assembly hole 6. Each of the protrusions 22 is provided with a predetermined width dimension, and an inclined guide surface 21 is formed on the inner surface of each of the protrusions 22.

On the other hand, as shown in FIG. 3, on the peripheral portion of the flange 13 of the operation button 11, there are four central portions on the upper, lower, left and right sides, with a width dimension to which the projecting piece 22 is fitted. The recess 16 is formed in a notch shape, and each recess 16
Contact surfaces 15 are formed on one side surface of each.

This embodiment is configured as described above. Therefore, as shown in FIG. 1B, when the operation button 11 is pushed in on the front surface of the operation portion 12, the operation portion 14 on the back surface of the operation portion 12 elastically compresses the elastic body 7 and switches the switch 3. By pushing the stem 3a, the switch 3 is turned on or off. After that, when the pushing of the operation button 11 is released, the operation button 11 is returned to the original position by the restoring force of the stem 3a and the elastic force based on the elastic compression of the elastic body 7. When the operation button 11 is returned, the contact surface 15 of the flange 13 of the operation button 11 abuts on the guide surface 21 on the back surface of the operation panel 5 at mutually inclined surfaces, and the positioning operation by the contact causes the operation panel 5 to move. The operation button 11 is returned to the normal posture without being displaced (rotationally displaced) with respect to the assembly hole 6.

As shown in FIG. 1A, the operation panel 5
On the other hand, when the operation button 11 is returned to the original position, the annular gap S between the outer peripheral surface of the operation portion 12 of the operation button 11 and the inner peripheral surface of the assembly hole 6 of the operation panel 5 is the same as the operation button.
The flange 13 of 11 is surely closed. Therefore, there is no problem that the light emitted from the illumination lamp 4 leaks out from the gap S. Further, in this embodiment, the operation button 11 can be pushed and returned by the fitting action of the projection 22 of the operation panel 5 and the recess 16 of the flange 13 of the operation button 11. As a result, it is possible to positively prevent the operation button 11 from swinging in the up-down direction and the left-right direction during the pressing operation and the returning operation of the operation button 11, and it is possible to improve the operability.

In the above embodiment, the case where the slanted guide surface 21 is formed on the inner side surface of each projecting piece 22 projecting on the back side of the operation panel 5 is exemplified, but the invention is not limited to this. Not a thing. For example, as shown in FIG. 5A, an inclined guide surface 21 may be formed on the outer surface of a projecting piece 22 that is provided on the back side of the operation panel 5 with a predetermined width dimension. However, in this case, the flange 13 of the operation button 11
A recess 16 into which the projecting piece 22 is fitted is formed in the recess 16.
An inclined contact surface 15 is formed on one side surface of the projection piece 22 so as to come into contact with the guide surface 21 of the projecting piece 22 so as to come into contact with and separate from the guide surface 21.

Further, as shown in FIG. 5B, a plurality of projecting pieces 17 are provided in the vicinity of the peripheral edge of the flange 13 of the operation button 11 with a predetermined width dimension, and the projecting pieces 17 are provided on the inner surface thereof. While forming an inclined contact surface 15, a concave portion 23 that fits into the projecting piece 17 is formed on the rear surface side of the operation panel 5, and a guide surface 21 corresponding to the contact surface is formed on one side surface of the concave portion 23. May be formed. Further, as shown in FIG. 5C, an inclined contact surface 15 is formed on the outer surface of a plurality of projecting pieces 17 projecting with a predetermined width in the vicinity of the peripheral edge of the flange 13 of the operation button 11. On the other hand, on the back side of the operation panel 5, there is a recess fitted to the projecting piece 17.
23 may be formed, and the guide surface 21 corresponding to the contact surface 15 may be formed on one side surface of the recess 23.

Further, in the above-described embodiment, the contact surfaces 15 are formed at a total of four positions on the upper, lower, left and right central portions of the flange 13 of the operation button 11, and the guide surfaces 21 respectively corresponding to these contact surfaces 15 are formed. Although it is formed at four places around the assembly hole 6 of the operation panel 5, the number of the contact surfaces 15 and the guide surfaces 21 is not limited. For example, as shown in FIG.
The contact surfaces 15 may be formed at a total of three locations on the upper left and right sides of the flange 13 and in the lower central portion, and guide surfaces corresponding to these contact surfaces 15 may be formed on the back side of the operation panel. Further, as shown in FIG. 6B, a plurality of contact surfaces 15 may be formed on the upper, lower, left and right sides of the flange 13 of the operation button 11, respectively.
As shown in FIG. 8, the contact surface 15 may be formed on the entire periphery of the flange 13 of the operation button 11.

[0018]

As described above, according to the present invention,
At the time of returning the operation button, the positioning action by the contact between the inclined guide surface and the contact surface allows the operation button to be held in the normal posture without being displaced in the assembly hole of the operation panel. In addition, it is possible to prevent the problem that the light emitted from the illumination lamp leaks out.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a structure for assembling an operation button of a push-type switch according to the present invention.

FIG. 2 is a perspective view showing the entire switch device.

FIG. 3 is a perspective view showing the operation button from the front side in the same manner.

FIG. 4 is a perspective view showing a part of the operation panel from the back side.

FIG. 5 is a cross-sectional view of an essential part showing another embodiment of the present invention.

FIG. 6 is a front view of an operation button of the same.

FIG. 7 is a front view showing an operation button in which a contact surface is similarly formed on the entire circumference of the flange.

FIG. 8 is a sectional view taken along line VIII-VIII of FIG.

FIG. 9 is a cross-sectional view showing a conventional one.

FIG. 10 is a perspective view showing the operation panel and the operation button separately.

[Explanation of symbols]

 3 Push-type switch 4 Illumination lamp 5 Operation panel 7 Assembly hole 11 Operation button 12 Operation part 13 Flange 15 Contact surface 16,23 Recess 21 Guide surface 17,22 Projection piece

Claims (3)

[Claims] 1. A push-type switch operation button assembly structure in which a switch is turned on / off by pressing an operation button provided in an assembly hole of an operation panel, wherein the operation button comprises: The operation panel includes an operation section that is pushed into the assembly hole of the operation panel and is capable of returning, and a flange that is extended around the back side of the operation section and faces the back surface of the operation panel. On the back side, an inclined guide surface for guiding the operation button to return is formed, while on the flange, an inclined contact surface that comes into contact with and separates from the guide surface is formed, When the operation button is returned to the operation panel, the push-type switch is configured to prevent the operation button from being displaced by the positioning action of the contact surface contacting the guide surface. Operation button assembly structure of the switch. 2. The push button switch operation button assembly structure according to claim 1, wherein the abutting surface is formed on one side surface of each of a plurality of recesses each having a predetermined width dimension near a peripheral portion of the flange. On the other hand, the guide surface is formed on one side surface of the projecting piece projecting on the back surface of the operation panel with a width dimension that fits in each of the recesses, and a push button switch operation button assembly structure. . 3. The push button switch operation button assembly structure according to claim 1, wherein the abutment surface is provided on one side surface of each of the projecting pieces provided with a predetermined width dimension in the vicinity of the peripheral portion of the flange. On the other hand, the guide surface is formed on one side surface of the concave portion provided on the back surface of the operation panel with a width dimension that fits into each of the projecting pieces. Attached structure.