JPH04105435U - switch structure - Google Patents

Abstract

(57) [Summary] (with modifications) [Purpose] To provide a switch structure that can improve the illumination accuracy of an operation knob. [Structure] In a switch mechanism in which an operation knob for operating the press switch is supported in a pushable manner in a case that houses and holds a press switch, light leakage is prevented from occurring through the gap between the case and the operation knob. In addition, a light-shielding wall is provided in the case. .

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a hinge used for operating electrical equipment such as automobile air conditioners. The present invention relates to a switch structure having a type switch knob.

0002

[Conventional technology]

A conventional switch structure of this type is shown in FIG. That is, 1 is A case (plate shadow) made of a light-shielding material, and this case 1 A light-shielding tube 3 that accommodates the push switch 2 is formed. Press switch 2 has , has a movable part 4 with a snap function, and by pressing this movable part 4, a pressing switch is released. The contacts inside the switch 2 are opened or closed. 5 is placed inside the light-shielding tube 3. This is a lighting bulb for illuminating the operating knob. 6 is a hole at the edge of the opening of the light-shielding tube 3. A knob holder supported in a cantilevered manner by a hinge portion 7, the knob holder 6 is formed of a transparent material, and the movable part 4 is in a free state of the knob holder 6. A bar 8 that can come into contact with the upper surface of the is integrally formed. 9 is integrated with the above knob holder 6 The operating knob 9 is provided in a knob holder and is capable of being transmitted through illumination. It can be displaced (pushed) in the vertical direction F together with the holder 6, and when this pushing The switching operation of the press switch can be performed at the same time.

0003

[Problem that the idea aims to solve]

With such a conventional switch structure, the operation knob cannot be easily operated in a dark place such as at night. When the illumination bulb 5 is turned on in order to transmit illumination 9, the illumination is transmitted through the transparent knob holder. The operation knob 9 is illuminated through the light transmitted through the light beam 6; To allow vertical movement of the operating knob 9 between the peripheral edge of the operating knob 9 and the rim of the light-shielding tube mouth. Since there are gaps a and b, a part of the light from the illumination bulb 5 passes through the gap a. The light leaks directly to the outside through the transparent knob holder 6 in the gap b. Since indirect light is leaked to the outside, the illumination accuracy of the operation knob may deteriorate due to this light leakage. There was a problem that

0004

[Means to solve the problem]

The present invention has been developed by focusing on this problem. The case has a case that supports the operating knob that operates the push switch so that it can be pushed. In the switch mechanism, there is no risk of light leaking through the gap between the case and the operation knob. In order to prevent this, the above case should be provided with a light-blocking wall to improve the illumination accuracy of the operation knob. The goal is to provide a switch structure that allows for

[0005]

【Example】

The present invention will be explained in detail below based on the embodiment shown in FIG.

[0006] Reference numeral 11 denotes a case made of a light-shielding material, and this case 11 has a pressing member. A light-shielding tube 13 that accommodates and holds the switch 12 is integrally formed. press switch 12 is connected and held to a printed circuit board 14 arranged on the back side of the case 11. , a movable part 15 is provided. 16 is located inside the light-shielding cylinder 13 and The illumination bulb 17 connected and held to the base plate 14 closes the upper opening of the light-shielding tube 13. The peripheral edge rising portion 17a and the lateral direction from the lower edge of the rising edge This operation knob is made of a transparent material and has a flange 17b extending from It is more formed. Also, a part of the flange 17b of this operation knob 17 has a hinge. A hinge portion 18 is integrally formed, and the hinge portion 18 is formed on the case 11. It is fitted and held by the hinge support part 19. It is supported on the case 11 via the hinge part 18. An upper end opening of the light-shielding tube 13 is provided on the inner circumferential surface of the rising portion 17a of the operation knob 17 that is held. The wall portions 13a are configured to face each other. 19 is formed on the light-shielding tube 13. The push rod is slidably fitted and held in the guide hole 20 in the direction of the cylinder axis. One end of this push rod 19 is in contact with the flange 17b, and the other end is in contact with the flange 17b. The end is formed to abut against the movable part 15 of the switch. 21 is the operation knob This hook portion 21 is formed to extend from the collar portion 17b of 17. The operation knob 17 can be pressed by the locking action of the step part 22 formed on the case 11. The raised position is regulated.

[0007] The above is the configuration of this embodiment. Next, the operation knob 17 will be described. is pushed up via the push rod 19 by the restoring force of the switch movable part, and the hook is pushed up. Due to the locking action between the lock portion 21 and the step portion 22, the operation knob 17 is moved around the hinge portion 18 as a fulcrum. It is pushed up to the specified position. Then, if you press the operation knob 17, this pressing force As a result, the movable part 15 of the switch is pushed down and the push rod 19 is pushed down. Switch 12 is activated. When the pressing force of the operating knob 17 is released, the restoring force of the movable part 15 is restored. is pushed up to the position shown in Figure 2.

[0008] If the lighting bulb 16 is turned on now, the lighting 16 will illuminate the operation knob 17 through the light-shielding tube 13. As a result, the operation knob 17 is displayed by emitting light by transmitted illumination. The light emitted from the illumination bulb 16 is directed to the back surface of the operation knob 17 and approximately above the rising portion 17a. Only the inner surface of the half is irradiated, and the other parts, i.e. the operation knob. Light leakage to the flange of 17 is blocked by the upper end opening wall 13a of the light shielding tube 13. Therefore, only the top surface of the operating knob 17 is illuminated, and the characteristics of the transmitted illumination are improved. .

[0009]

[Effect of the idea]

As described above, the present invention provides a shield in which a light shield tube 13 having a light source 16 at one end is formed. A light-transmitting knob 17 is provided on the light member 11 so as to close the other open end of the light-shielding tube. One end is used as a fulcrum, and the other end is attached to the snap machine so that it can swing freely at a predetermined displacement. A press switch main body 12 having a movable part of the function is provided, and the press switch main body 12 has a movable part. A switch with a push rod 19 interposed between the moving part 15 and the other end of the knob 17. According to this structure, the light source 16 is blocked by the action of the light shielding tube 13. The light irradiated from the rear surface of the operation knob 17 and the inner surface of approximately the upper half of the rising portion 17a It is irradiated only to other parts, that is, to the flange of the operation knob 17. Since light leakage is blocked by the upper end opening wall portion 13a of the light shielding tube 13, the operation Only the top surface of the actuator knob 17 is illuminated through transmission, and the effect of improving the transmission illumination characteristics is obtained. can get.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a conventional switch structure.

FIG. 2 is a sectional view showing a switch structure according to an embodiment of the present invention.

[Explanation of symbols]

11...Case 12...Press switch 13... Light-shielding tube 14... Printed circuit board 15...Movable part 16...Lighting bulb 17...Operation knob 18...Hinge part 19...Push rod 20...Guide hole 21...Hook part 22...Step part

Claims (1)

[Scope of utility model registration request] 1. A light-shielding member (11) having a light-shielding tube (13) having a light source (16) at one end thereof is provided with a light-transmitting knob (17) so as to close the other open end of the light-shielding tube. )
is provided with a push switch main body (12) having one end as a fulcrum and the other end being engaged so as to be able to swing freely through a predetermined displacement, and having a movable part with a snap function.
2) A switch structure in which a push rod (19) is interposed between the movable part (15) and the other end of the knob (17).