JPH0539539Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a self-illuminated button switch. Such a self-illuminated button switch is turned on and off by a short stroke of about 1 mm, and the button surface is illuminated.

[Conventional technology]

A side sectional view of a conventional self-illuminated button switch is shown in FIG. In the conventional button switch, the button 42 is fitted into an opening 41a provided in the front panel 41, and the presser plate 43 is locked by a protrusion 41b protruding from the front panel 41. A coiled spring 44 is attached between the convex portion 42a of the button 42 and the convex portion 43a of the presser plate 43, thereby returning the button 42 in the forward direction (in the direction of arrow C in the figure). A light source lamp 45 is projected from an opening 43b in the center of the holding plate 43.
A protrusion 42b of the button 42 passes through the opening 43c, and the protrusion 42b allows the switch 46 to be pressed.
is activated, and the light source lamp 45 is turned on or off.

[Problem that the invention attempts to solve]

Conventional self-illuminated button switches require a presser plate and a coiled spring, so a large space is required to install these members, resulting in a large structure.
Also, due to the structure, shadows from the coiled spring and button protrusion tend to appear on the button surface when the button is turned on. Furthermore, the number of parts is large, and assembly requires many man-hours.

[Means for solving problems]

In order to solve the above-mentioned problems, in the present invention, a plate-like tongue piece having a spring force and having a substantially dish-shaped cross section is arranged at a rear position of a switch-on/off button member made of a translucent material. The button member is pressed forward and supported by the spring force of the tongue piece, and a light source protrudes from an opening provided at the bottom of the tongue piece, and the light irradiated from the light source is transmitted to the button member. In a self-illuminated button switch in which a reflective surface is formed on the inner surface of the tongue to reflect the light in a direction, a protrusion is formed at the end of the reflective surface of the tongue and on the outer surface of the tongue. , a self-illuminated button switch is provided, characterized in that the switch is disposed at a position facing the protrusion.

[Effect]

The button member is supported by the springiness of the tongue piece itself. The switch is turned on and off by a stroke of the button member, for example, about 1 mm, and the light source blinks. The light from the light source is irradiated toward the button member by the reflective surface of the tongue piece, thereby uniformly illuminating the button member.

〔Example〕

A side sectional view of a self-illuminated button switch as an embodiment of the present invention is shown in FIG. Also, FIG. 2 shows an external perspective view of the button 1 and tongue 3 in FIG. 1, and the tongue 3 seen from the direction of arrow A in FIG.
External perspective views of the two are shown in FIG. 3, respectively.

A rectangular button 1 made of a transparent or translucent material is fitted into a rectangular opening 2a provided in the front panel 2. Button 1
The flange portion 1a is locked to the edge of the opening 2a, thereby restricting movement in the forward direction.
A tongue piece 3 having spring properties is arranged at the rear position of the button 1 in the direction of arrow B in the figure.
is pressed forward and supported by the spring force of the tongue piece 3.

The tongue 3 is formed by bending a plate-like member having spring properties so that its cross section is roughly dish-shaped. A groove 3b is formed in the inclined portion of the dish-shaped cross section, which allows the spring force of the tongue 3 to be adjusted to an appropriate magnitude. A lamp 4 protrudes from an opening 3a provided in the bottom of the tongue 3, and a reflective surface 3d is formed on the inner surface of the tongue 3 so that the light emitted by the lamp 4 is uniformly reflected and diffused in the direction of the button 1.

Protrusions 3c are attached to both ends of the tongue piece 3. A push piece 5a of the switch 5 is in contact with the protrusion 3c, and when the button 1 is pressed, the switch 5 is pressed.
The electrical wiring is done so that the lamp 4 is turned on and off, and the lamp 4 is thereby turned on or off.

The operation of the self-illuminated button switch of this embodiment will be explained below. By pressing button 1, tongue piece 3
The push piece 5a of the switch 5 is operated via the protrusion 3c, and the lamp 4 is turned on. The button 1 is returned to its original position by the springiness of the tongue piece 3. The light emitted from the lamp 4 is reflected and diffused by the reflective surface 3d of the tongue piece 3, and uniformly illuminates the button 1.

Various modifications can be made to the implementation of the present invention. For example, the tongue piece as a reflector in the above-mentioned embodiment is provided with a groove to adjust the strength of the spring to an appropriate size.
The present invention is not limited to this, and the strength of the spring may be adjusted by adjusting the plate thickness, material, etc. of the tongue without providing the groove. Further, as shown in FIG. 2, the tongue piece of the above-mentioned embodiment has a reflective surface formed with a side slope portion that spreads from side to side in the drawing, but is not limited to this. It is also possible to form similar side slopes in the vertical direction of the tongue piece in the figure and form reflective surfaces thereon.

[Effect of idea]

According to the present invention, a self-illuminated button switch can be constructed with a small number of parts, so the switch can be made smaller and the number of assembly steps can be reduced. Moreover, by adopting a structure that does not require a coiled spring or the like, it is possible to prevent the shadows of these parts from appearing on the illuminated surface of the button, and it is possible to realize uniform illumination of the button.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a self-illuminated button switch as an embodiment of the present invention, Fig. 2 is a perspective view of the button and tongue in Fig. 1, and Fig. 3 shows the tongue in Fig. 2. FIG. 4 is a perspective view of the external appearance viewed from direction A, and a side sectional view of a conventional self-illuminated button switch. 1... Button, 2... Front panel, 3... Tongue piece, 4... Lamp, 5... Switch, 5a... Push piece.

Claims (1)

[Claims for Utility Model Registration] A plate-shaped tongue having a spring force having a substantially dish-shaped cross section is disposed at a rear position of a switch-on/off button member made of a translucent material, and the spring force of the tongue The button member is pressed forward and supported by the tongue piece, and a light source protrudes from an opening provided at the bottom of the tongue piece, and the tongue piece is used to reflect light emitted from the light source toward the button member. In a self-illuminated button switch in which a reflective surface is formed on the inner surface of the tongue, a protrusion is formed at the end of the reflective surface of the tongue and on the outer surface of the tongue, and a position facing the protrusion is provided. A self-illuminated button switch characterized by having a switch placed on the inside.