JPH06342614A - Push button switch device - Google Patents

Abstract

PURPOSE:To provide a push button switch device in which a lamp window can be attached to a switch button expensively and surely. CONSTITUTION:A lamp window 6 is fixed to a switch button 2 such that a light transmission part 6a and 6b formed in the window 6 are fitted with pressure with respect to the hole part 2f and boss part 2c formed in the button 2. A notched groove 2d is formed on the boss part 2c and in the groove 2d a projection 6d or bar part 6e formed in the hole part 6b of the window 6 is pressure fitted and held with the tip of a control shaft 3a of a switch main body 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push button switch device for turning on / off a power source or the like.

[0002]

2. Description of the Related Art FIGS. 7 and 8 show the structure of a conventional push-button switch device with a lamp window, in which 1 is a case which is an operating portion of a casing of electric equipment and the like, and 2 is a switch button. In general, it is formed of an opaque member such as plastic, and the boss portion 2c is fitted into the operation shaft 3c of the switch body 3 to be integrated. Reference numeral 4 denotes a circuit board on which the switch body 3, the light emitter 5, and the like are arranged. Reference numeral 6 is a lamp window formed of a transparent or translucent member such as plastic, and is attached by an adhesive or the like so as to close the hole 2f formed in the pressing surface of the switch button 2. The light of the light-emitting body 5 passes through the lamp window 6 and is guided to the outside. Note that FIG. 8 shows a conventional example in which the switch button 2 and the lamp window 6 are integrally molded by a two-color molding method.

Here, the operating shaft 3c of the switch body 3 operates with a constant stroke to turn the switch on and off. The switch body 3 and the light-emitting body 5 are always interlocked with each other, and transmit information to a person who operates the light-emitting body 5 when the power is turned on / off or when an abnormality occurs. Since the lamp window 6 is inside the switch button 2, the operation and visibility are good. As described above, in the conventional case, the lamp window 6 is attached to the switch button 2 by the integral molding by the two-color molding method or the use of the adhesive or the like.

[0004]

Since the conventional one is constructed as described above, the one shown in FIG. 7 requires an adhesive for attachment, which requires a lot of labor for production and increases the manufacturing cost. . Furthermore, if the adhesive strength of the adhesive is weak, the reliability after attachment is low and the adhesive easily falls off. There was a problem that it was difficult to put on and take off. On the other hand, in the case of the two-color molding method, the mold structure is complicated and the mold cost is high. The shape cannot be flexible either. Of course, there was a problem that it could not be removed.

The present invention has been made in order to solve the above-mentioned problems. The lamp window and the switch button can be easily attached and detached, and they can be prevented from coming off due to an external force, resulting in low cost and reliability. The purpose is to obtain a push button switch device with high performance.

[0006]

SUMMARY OF THE INVENTION In a push button switch device according to the present invention, a hole formed in a lamp window is fitted and press-fitted into a boss portion of a switch button, and at the same time, a hole is formed in a switch button pressing surface. The lamp window is attached to the switch button by fitting and press-fitting the translucent portion formed on the lamp window.

[0007]

In the push-button switch device according to the present invention, there are at least two places where the switch button and the lamp window are fitted and press-fitted, and moreover, the projection portion integrated with the lamp window is provided between the operation shaft of the switch body and the switch button. Alternatively, by fitting the crosspiece, the lamp window is prevented from coming off, and the lamp window does not fall off even if some external force is applied. Further, since the fixing is a fitting press-fitting, it can be attached and detached.

[0008]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 is a case that is a casing of an electric device or the like, 2 is a switch button, and an operation shaft 3 of a switch body 3
The boss portion 2c is fitted and attached to a. Reference numeral 4 denotes a circuit board on which the switch body 3, the light emitter 5, and the like are arranged.
6 is a lamp window made of a member that transmits the light of the light emitting body 5,
A light-transmitting portion 6a that fits into a hole 2f on the pressing surface of the switch button 2 and a hole 6b that fits into the outer periphery of the boss portion 2c of the switch button 2 are provided.

The switch operation is the same as in the conventional example, but the way of fixing the lamp window 6 to the switch button 2 is different. In this embodiment, the transparent portion 6a and the hole portion 6b of the lamp window 6 are fitted and press-fitted into the hole portion 2f of the pressing surface of the switch button 2 and the outer periphery of the boss portion 2c, respectively. That is, the lamp window 6 and the switch button 2 are fitted and press-fitted at two places to prevent them from coming off. With the above configuration, the lamp window 6 can be securely attached without the need to use an adhesive to attach the lamp window 6.
Further, the processing cost does not change much from the conventional one, so that it can be realized at low cost. Further, since it is fixed by fitting and press fitting, there is an advantage that the lamp window 6 can be exchanged after the attachment.

Embodiment 2. 4 and 5 show another embodiment of the present invention, in which the boss portion 2c of the switch button 2 is provided with a cutout groove 2d, and the hole portion 6b of the lamp window 6 is provided with the cutout groove 2d. By providing the protrusion 6d to be fitted, the clearances x and y are formed in the dimension of the hole 6b to allow some margin, and the protrusion 6d is press-fitted into the cutout groove 2d. Example 1
The same effect as can be obtained.

Embodiment 3. 6 shows a further embodiment of the present invention, in which the protrusion 6d in the second embodiment is shown.
The cross-section 6e is formed by connecting the two together, and the cross-section 6e is pressed by the tip of the operation shaft 3a of the switch body 3 to further reliably prevent the slip-out.

[0012]

As described above, according to the present invention, since the lamp window is attached to the switch button by press-fitting at two places, both can be attached / detached and replaced, and the assembling can be simplified. Moreover, there is an effect that a highly reliable push button switch device that can be realized at low cost can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view showing a push button switch device according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a push button switch device according to an embodiment of the present invention during operation.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view showing another embodiment of the present invention.

5 is a cross-sectional view taken along the line BB of FIG.

FIG. 6 is a sectional view of the same portion as FIG. 5 showing still another embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a conventional push button switch device.

FIG. 8 is a sectional view showing another example of the conventional push button switch device.

[Explanation of symbols]

 2 switch button 2c boss 2d notch groove 2f hole 3 switch body 3a operating shaft 5 light emitter 6 lamp window 6a translucent portion 6d protrusion 6e crosspiece

Claims (3)

[Claims] 1. A switch body that is turned on / off by pressing the operation shaft in a predetermined direction, a switch button having a boss portion fitted and supported on the operation shaft of the switch body, and a switch body of the switch body. A pusher provided with a light-emitting body that informs an on / off state by turning on and off, and a lamp window that is mounted inside the switch button and has a translucent portion that guides light emitted from the light-emitting body to the outside of the switch button. In the button switch device, the translucent part of the lamp window is fitted into the hole of the switch button pressing surface, and the hole of the lamp window is fitted into the boss part of the switch button fitted with the operation shaft of the switch body by press fitting. A push button switch device characterized in that 2. A cutout groove is provided in a boss portion of a switch button that fits with an operation shaft of the switch body, and a protrusion is provided in a hole portion of the lamp window so that both are fitted and press-fitted to each other. The push-button switch device according to claim 1, wherein 3. A cutout groove is provided in a boss portion of a switch button fitted with the switch body, a crosspiece is integrally provided in a hole portion of the lamp window, and the crosspiece is fitted in the cutout groove. 2. The push button switch device according to claim 1, wherein the cross section is inserted between the inner surface of the switch button and the tip of the operation shaft of the switch body while being press-fitted.