JPH0110820Y2 - - Google Patents

Description

[Detailed description of the invention] This invention houses a push switch and a display in a case, and operates the push switch by pressing an operation plate protruding from a hole in the case, and displays the display according to the operating status of the push switch. Concerning a self-illuminating switch that lights up a device.

Figure 1a is a side view showing the configuration of a conventional self-illuminated switch, with part of it shown in cross section, Figure 1b is a longitudinal sectional view thereof, and Figure 2 is a plan view of the parts that make up this switch. A hole is bored in the upper part of the case 2, one side of which is formed by a printed circuit board 7, and an operation plate 1 having a protruding portion protruding from the hole is slidably installed inside the case 2, and the operation plate 1 is slidably installed inside the case 2. Plate 1 is pressed in the direction of arrow A under the action of spring 5. Further, the protrusion of the operation panel 1 is made of a semi-transparent material, so that it is possible to check the blinking state of a display 3 such as an LED provided on the printed circuit board 7 facing the protrusion. Further, the operation panel 1 is provided with a protrusion 1b for pushing and operating a push switch 6 provided on the printed circuit board 7 at a position spaced apart from the display 3.

On the other hand, a U-shaped interlocking rod 8 as shown in FIG. 2 is provided in order to keep the inclination of the operation plate 1 small when it is pushed and operated, and the intermediate portion 8c of this interlocking rod 8 is rotatable by the case 2. The supporting portions at the ends of the bent ends 8a and 8b are engaged with the protrusions 1a on both sides of the operation plate 1 to support them. Further, the display device 3 is held by a holder 4 bonded to the printed circuit board 7, and the light generated by the display device 3 is reflected toward the protruding portion of the operation panel 1. In this way, even if the push switch 6 is at a position deviated from the operating position when the protrusion of the operation plate 1 is pushed, the interlocking rod 8 suppresses the inclination to a small extent, and the operation of the push switch 6 is reduced. and recovery is ensured. Further, the display 3 is made to emit light via a circuit (not shown) in accordance with the operating state of the push switch 6, so that the operating state of the operating panel 1 can be confirmed by the illuminance of its protrusion.

In such a conventional self-illuminated switch, the push switch 6 must be placed in a position that is quite offset from the display 3, which inevitably increases the width of the operation panel 1. This made it difficult to downsize the switch.

The present invention has been made in view of the above points, and aims to provide a self-illuminated switch that can reduce the width of the operation panel and suppress the generation of moment.

In order to achieve the above object, the case has one side formed of a printed circuit board, a hole is formed on the opposite surface of the printed circuit board, and a protrusion protruding from the hole of the case, and the protrusion is translucent. an interlocking rod that is bent into a U-shape and whose middle portion is rotatably held by the case, and whose bent ends each support both sides of the operation plate with a supporting portion; a display device provided on the printed circuit board facing the protrusion of the operation plate; and a push switch provided on the printed circuit board to be operated by pushing directly or indirectly by the interlocking rod. The interlocking rod can be rotated by pushing and operating the operation plate, thereby suppressing the inclination of the operation plate and operating the push switch, and changing the display according to the operating state of the push switch. By lighting up the operation panel, the operation state of the operation panel can be confirmed by the illuminance of the protrusion.

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

Figure 3a is a plan view showing the main parts of the self-illuminated switch according to the present invention, Figure b is a side view showing a part of it in cross section, and Figure 4 is the parts that make up the switch. In the plan view of FIG. 1, the same reference numerals as in FIG. 1 and FIG.
This is a plate that is attached across both bent ends of the

In FIG. 3, both sides of the operation plate 1 are formed symmetrically, and a protrusion is provided in the center thereof, and the push switch 6 is located at a position removed from the operation plate 1, and is located in the middle of the interlocking rod 8. Part 8c
and both bent ends 8a and 8b that support the operation plate 1.
It is attached at a position closer to the intermediate portion 8c than the distance from the supporting portion at the tip of the holder. Further, as shown in FIG. 4, the interlocking rod 8 has a plate 9 which is supported in a manner spanning over predetermined positions of the bent ends 8a and 8b and which constitutes a pressing part, and is arranged at a distance between the intermediate part 8c and the supporting part. The plate 9 is attached at a position closer to the intermediate portion 8c than the press switch 6, and the approximate center of the plate 9 comes into contact with the push switch 6, and when the operation plate 1 is pressed, the interlocking rod 8 rotates and the push switch 6 is pressed by the plate 9. I'm getting it to work. On the other hand, the intermediate portion 8c of the interlocking rod 8 is a bearing (formed integrally with the case 2) provided at a position approximately equidistant from the push switch 6.
It is rotatably held by 2a and 2b.

With this configuration, both the protrusion of the operation plate 1 and the push switch 6 are located between the bent ends 8a and 8b of the interlocking rod 8, and both sides of the operation plate 1 are controlled by the interlocking rod 8 under exactly the same conditions. Moreover, even if the return force of the push switch 6 acts on the operation plate 1 via the interlocking rod 8, no moment that would impede the operation of the operation plate 1 is generated. Furthermore, since the operating panel 1 does not have a portion for directly operating the push switch 6, the width of the operating panel can be reduced by this amount, and the overall shape of the self-illuminated switch can be made smaller.

In the above embodiment, the push switch 6 is placed in the center of the plate 9 which is attached to both bent ends of the U-shaped interlocking rod 8. bearings 2a, 2b
If the plate 9 is held by a Even if it is provided at the extension end, it will not interfere with the operation of the operation panel 1.
Furthermore, by changing the shape of the interlocking rod 8 to the shape shown in FIG. 5, for example, a pressing part is formed, and the interlocking rod 8 directly operates the push switch 6 by pressing with this pressing part. The same effect as in the example can be performed.

As is clear from the above explanation, according to the self-illuminated switch of the present invention, the shape of the operation panel and the overall shape of the self-illuminated switch can be significantly reduced, and the cost can thereby be significantly reduced. I can do it. It is also possible to prevent the generation of a moment due to the difference between the disposed position and the operating position of the push switch, thereby improving the reliability and durability of the self-illuminated switch.

Furthermore, in the case of conventional self-illuminated switches, the operating panel directly operated the push switch, which required the use of a push switch with a relatively large stroke commensurate with the movement dimension of the operating panel, but the self-illuminated switch of the present invention When operating a push switch using a pressing part that is located closer to the intermediate part than the distance between the intermediate part of the interlocking rod and the supporting parts at both bent ends, the stroke will be longer than that of the operating plate. This not only makes it possible to use a push switch with a smaller diameter, but also prevents damage to the push switch, which would damage the push switch if the push switch is pushed beyond the allowable stroke of the push switch. In order to prevent this, it was necessary to set the tolerance of the stroke of the operation plate small, but the self-illuminated switch according to the present invention has the advantage that the tolerance of the stroke of the operation plate can be set larger. The push switch itself may also be small, which makes it easier to miniaturize the self-illuminated switch.

[Brief explanation of the drawing]

Figure 1 is a side view and longitudinal sectional view showing the configuration of a conventional self-illuminated switch, Figure 2 is a plan view of some parts of this self-illuminated switch, and Figure 3 is an embodiment of the self-illuminated switch according to the present invention. FIG. 4 is a plan view of main parts in the same embodiment, and FIG. 5 is a diagram showing another example of the shape of the interlocking rod. 1...Operation board, 2...Case, 3...Display unit,
4... Holder, 5... Spring, 6... Push switch, 7... Printed circuit board, 8... Interlocking rod, 8a, 8b... Both bent ends, 8c... Middle part, 9... Plate (pressing part) ).

Claims (1)

[Claims for Utility Model Registration] (1) A case having one surface formed of a printed circuit board and having a hole bored in the opposite surface of the printed circuit board, and a protrusion protruding from the hole of the case, and the protrusion is bent into a U-shape, the middle part thereof is rotatably held by the case, and the respective supporting parts at both bent ends support both sides of the operation plate. a display device provided on the printed circuit board facing the protrusion of the operating board; and a push switch provided on the printed circuit board, the interlocking rod supporting the operating board. It has a pressing part that rotates when pressed, and this rotation presses and operates the push switch, and the pressing part is connected to the middle part of the interlocking rod and the supporting part at both bent ends. The display device is arranged at a position closer to the intermediate portion than the distance, and is configured so that the display device is turned on according to the operating state of the push switch, and the operating state of the operating panel can be confirmed by the illuminance of the protrusion. A self-illuminating switch characterized by: (2) The self-illuminated switch according to claim 1, wherein the pressing portion is constituted by a plate attached across both bent ends of the interlocking rod.