JPH0625864Y2 - Push button device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a push button device for an electronic device or the like.

[Outline of the Invention] In the present invention, by providing a push piece of a push button at one end of the bottom of the push button, the push piece does not interfere with the illumination of the letters displayed on the push button, and a uniform character display is performed. It is a thing.

[Conventional technology]

 Conventionally, a push button device as shown in FIG. 3 is known.

In the figure, a push button hole 5a is provided in a front panel 5 of an electronic device or the like, and a push button 4 is attached to the push button hole 5a with its head 4a protruding forward. A brim-like portion 4c is provided on the periphery of the bottom portion of the push button 4 to limit the protrusion thereof to the front, and a pressing rod 4b is provided at the center of the inner surface of the head portion 4a. A wiring board 1 is provided behind the front panel 5, a switch 3 is attached to the wiring board 1 behind the push button 4, and the tip of a push rod 4b of the push button 4 has a pressing portion of the switch 3. It is designed to come into contact with. A transparent character is formed on the head portion 4a so that it is illuminated from the back side by a lamp 2 mounted adjacent to the switch 3.

In such a push button device, when the head portion 4a of the push button 4 is pushed, the push rod 4b pushes the pushing portion of the switch 3, and as a result, the electronic device performs the operation corresponding to the pushed push button 4. Has been done. Further, in this case, the lamp 2 provided adjacent to the switch 3 is also turned on, and the transparent character provided on the head 4a is illuminated from behind the push button 4, so that the operation of the electronic device is displayed. Can be done.

[Problems to be solved by the device]

However, if the push bar 4b is provided at the center of the push button 4 as described above, the illumination of the transparent letters by the lamp 2 becomes uneven, and uniform letter illumination cannot be performed.

The present invention has been made to remedy such drawbacks.

[Means for Solving the Problems]

The push button device according to the present invention comprises a front panel having a button hole, a head portion inserted into the button hole provided in the front panel from the back side, and a bottom portion having a brim shape, and a push switch at one end of the bottom portion. A push button provided with an operation piece for activating the push button, and one end fixed to the other end side of the push button on the back surface of the front panel, and a biasing portion for pressing and biasing the periphery of the push button bottom portion is formed on the other end side. And an elastic member,
The push button is held between the elastic member and the back side of the front panel.

[Action]

Since the present invention has the above-mentioned configuration, there is no operation piece for blocking the illumination on the back side of the head of the push button, and uniform illumination is possible. Further, since the urging member that presses the push button also functions as a fulcrum, it is possible to suppress the number of assembling steps, the number of parts, and the cost.

〔Example〕

FIG. 1 is a sectional view showing an embodiment of the present invention. In the figure, a push button hole 16 is provided on a front panel 16 of an electronic device or the like.
A is provided, and the head portion 11a of the rectangular push button 11 is inserted into the push button hole 16a. A collar-shaped portion 11e is provided at the bottom of the push button 11 to prevent the push button 11 from falling off from the push button hole 16a. The collar-shaped part 1
The first side of 1e extends in a direction opposite to the side of the push button head portion 11a to form a pressing piece 11d. The pressing piece 1
A pressing protrusion 11g is provided at the tip of 1d. The head portion 11a of the push button 11 is plated 11c except for the transparent character 11b. Protrusions 11f are provided on the two second sides of the collar-shaped portion 11e, which are orthogonal to the first sides, close to the first sides. Front panel 1 above
6 is provided with a wiring board 1 to which a lamp 2 and a switch 3 are attached. In this case, the pressing portion of the switch 3 is provided at a position where it contacts the tip of the pressing piece 11d via a rubber 13. There is.

The leaf spring 12 is bent in opposite directions at the first and second bent portions 12d and 12e, and is divided into a central portion 12c, a biasing portion 12a and a base portion 12b. Urging portion 12a
Has a bifurcated fork shape along the two second sides of the collar-shaped portion 11e. The biasing portion 12a is bent at a substantially right angle from the central portion 12c of the leaf spring 12 at the bent portion 12d, and the base portion 12b is bent at an obtuse angle from the central portion 12c at the bent portion 12c.

The front panel 16 is provided with columns 17 and positioning protrusions 15, and the base 12b is provided with screw holes 12f and positioning holes 12g at positions corresponding to these. The positioning protrusion 15 is inserted into the positioning hole 12g to position the leaf spring 12, and the support 17 is provided with a screw 14.
The leaf spring 12 is fixed with a screw.

In the above configuration, the urging portion 12a is the bending portion 12
In the vicinity of d, the third side of the collar-shaped portion 11e facing the first side is pressed from the back toward the front panel 16 side, and the vicinity of the tip of the biasing portion 12a elastically presses the two protrusions 11f. Therefore, the push button 11 is fixed without falling off. Therefore, the head portion 11a of the push button 11 is not
When pressed against the spring force of 2a, the push button 11
Rotates about the third side of the collar-shaped portion 11e as a fulcrum, and the pressing piece 11d presses the pressing portion of the switch 3 via the rubber 13, and as a result, the electronic device performs a predetermined operation. At this time, at the same time, the lamp 2 is turned on to illuminate the transparent character 11b from behind the push button 11, and the function corresponding to the push button 11 is displayed.

Since the urging portion 12a of the leaf spring 12 is formed in a fork shape as described above and abuts only on the collar-shaped portion 11e of the push button 11, there is no obstruction behind the transparent character 11b of the push button 11, and the lamp 2 Can evenly illuminate the transparent character 11b.

FIG. 2 is an assembly view of the push button device in the case where two push buttons 11 are arranged adjacent to each other.

In the drawing, the fork-shaped biasing portion 12a of the leaf spring 12 is shown.
Are formed in two rows corresponding to the respective collar-shaped portions 11e of the push buttons 11 provided close to each other. Central part 1 above
2c and the base portion 12b are common to the above-mentioned two continuous urging portions 12a and are formed as one body.

Therefore, in order to assemble such a push button device, the head portion 11a of the push button 11 is inserted into the push button hole 16a, the leaf spring 12 is placed from above, and the guide hole 12g is inserted into the positioning protrusion 15. The position of the leaf spring 12 is determined, and the screw hole 12
It is only necessary to fix a screw to the column 17 from f.

[Effect of device]

Since the present invention has the above-mentioned structure, there is no obstruction between the light source for illumination and the characters displayed on the push button, and therefore, a uniform and clear character and a biasing member for pressing the push button. Since it also serves as a fulcrum, it is possible to suppress the number of assembly steps, the number of parts, and the cost increase.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is an assembly drawing thereof, and FIG. 3 is a sectional view showing a conventional example. 2 ... Lamp, 3 ... Switch 11 ... Push button, 11b ... Transparent character 12 ... Leaf spring, 12a ... Energizing part

Claims (1)

[Scope of utility model registration request] 1. A front panel having a button hole, and a head portion inserted into a button hole provided in the front panel from the rear surface and a bottom portion having a brim shape for activating a push switch at one end of the bottom portion. A push button provided with an operating piece; and an elastic member having one end fixed to the other end side of the push button on the back surface of the front panel and an urging portion for pressing and urging the periphery of the push button bottom portion on the other end side. And the elastic member, and the push button is sandwiched between the elastic member and the back side of the front panel.