JP3149277B2 - Switch key top guide - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key top guide for a switch used in a so-called illuminated switch of an electronic instrument such as an electronic musical instrument such as an electronic piano and an electronic organ.

[0002]

2. Description of the Related Art A key top guide is provided between a switch body and a key top to guide a push button of the key top, and aligns a decoratively configured key top with a general-purpose switch body. It also has a support function that allows the keytop to face the switch opening of an operation panel such as a wooden switch panel or a decorative metal switch panel with a surface treatment.

FIGS. 5 and 6 show a conventional example of such a key top guide. This key top guide 5
Reference numeral 1 denotes a switch for a so-called illuminated switch, which is a box-shaped guide body 53 having a flange 52 at an upper portion, a frame-shaped fitting portion 54 provided at an upper portion of the guide body 53, and an extended end of the flange 52. And an LED lens 55 provided on the side. These are often formed by double molding, since the materials of the lens portion and the frame portion are often different. The key top guide 51 is fitted into the switch opening 56a of the upper case 56 constituting the operation panel at the frame-shaped fitting portion 54, and fitted into the LED opening 56b of the upper case 56 by the light projecting portion 55a above the lens 55. The upper case 56 is fixed to the inner surface of the upper case 56 in this state. On the other hand, the switch main body 61 and the LED 62 are incorporated on a substrate 63 disposed inside the upper case 56 so as to correspond to the guide main body 53 and the lens 55, respectively, and to face these from below. .
Further, the key top 64 is slidably engaged with the inside of the guide main body 53 in a state where the key top 64 protrudes from the upper case 56 in a non-removable state, and via the push button block 65 housed in the guide main body 53. It is in contact with the switch body 61.

[0004]

When a large number of switches are arranged on the operation panel, the related switches are arranged in a well-balanced manner in consideration of the operability of the switches and the design of the entire operation panel. Generally, the same key tops are frequently used and arranged. In such a case, if there is an illuminated switch and a non-illuminated switch in the switch group arranged in a line, the conventional key-top guide 51 will be replaced with the key-top guide 51 with the lens 55.
It was necessary to prepare two types of key top guides, a key top guide without a lens and a key top guide without a lens. That is, although the guide bodies of the key top guides are completely the same, it is necessary to manufacture two types of key top guides, which is unreasonable in terms of commonality of parts and cost. .

However, if the guide body 53 of the key top guide 51 and the lens 55 are formed separately, the above-mentioned problem is somewhat solved. However, in this case, not only the number of components but also a new problem such as an increase in the number of assembling man-hours and labor for positioning are caused.

The present invention has been made in view of the above problems, and provides a key top guide of a switch which can be easily used depending on the presence or absence of a light emitting portion of an indicator lamp without increasing the number of parts. That is the purpose.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an operation system in which a switch opening and a light emitting unit opening are arranged side by side.
Attach to the panel from the back side, plan the key top
Key top guide for the switch inside
Key that guides the key top by fitting into the switch opening of the
Top guide body and side from this key top guide body
To the operation panel while it is in contact with the back of the operation panel.
Flange to be attached to the
The support plate section that is connected via the
A table that protrudes from the surface of the holding plate and fits into the
And an indicator light projecting unit .

[0008]

According to this configuration, one type of key top guide is provided.
To both the switch with illuminated function and the switch without illuminated function.
Can be used. That is, a switch with an illumination function
This key top guide is
In the operation panel, where the
The key top guide body is provided with a switch opening
In addition, it is assumed that the indicator light projecting portions are fitted into the projecting portion openings, respectively.
When the flag touches the back of the operation panel,
It is attached to the work panel from the back side. While illuminated
Use this key top when configuring a switch without function.
The guide is a part of the operation panel that has only the switch opening
And a support plate with an indicator light projecting part protruding from the surface.
Key part is cut off from the flange through the fragile part.
Top guide body fits into switch opening and flange
Is attached to the operation panel with the
You. In this case, the indicator light projecting part protruding to the front side
Since it is cut off together with the rate section,
Take the key top guide to the operation panel without being
Can be attached. In addition, key top guide is operated
Since it is attached to the panel from the back side, the support plate
Is the part invisible from the outside even if the part is cut off?
It does not affect the appearance of the key top guide at all,
This can be maintained well.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a key top guide of a switch according to an embodiment of the present invention will be described in detail. This key top guide is incorporated into an operation panel of an electronic musical instrument in which a number of switches are arranged and arranged. FIG. 1 is a perspective view of the key top guide, and FIG. 2 is a structural view of the key top guide. As shown in both figures, this key top guide 1 is for an illuminated switch, and a key top guide body 2
And an LED lens 3 connected by a flange 4. The guide body 2, the lens 3 and the flange 4 are integrally molded by a resin mold using a translucent resin.

The guide body 2 is formed in a box shape with the flange 4 attached to the upper portion, and is composed of an upper frame-shaped fitting portion 5 and a lower box-shaped portion 6 with the flange 4 interposed therebetween.
The frame-shaped fitting portion 5 is formed so as to protrude above the flange 4 by an amount substantially corresponding to the thickness of the upper case 21 of the electronic musical instrument constituting the operation panel. The box-shaped portion 6 includes a key top 22 described later.
Has an internal space in which the lower half thereof is slidably inserted, and a circular opening 6a is formed in the center of the bottom so as to penetrate therethrough. Further, a pair of notches 6b, 6b are formed on both sides of the box-like portion 6, and each hook-like leg 22a of the key top 22 is held in this notch 6b in a retaining state. It is designed to engage.

The flange 4 constitutes a mounting portion for adhering and fixing the key top guide 1 to the upper case 21 from the inside of the upper case 21. One end of the flange 4 is extended to the lens 3 side. 3 also serves as the support plate portion 7. The lens 3 is formed in a vertically long columnar shape so as to penetrate the flange 4, and includes an upper light projecting portion 8 and a lower lens body 9 with the flange 4 interposed therebetween. Floodlight unit 8
Is formed on the upper surface of the flange 4 in a rectangular shape, and the lower end of the lens body 9 is formed in a concave lens shape so as to exhibit a lens effect.

A support plate 7 on which the lens 3 of the flange 4 is formed is sandwiched between the support plate 7 and
A pair of cuts 10, 10 extending from ends of the flange 4 are formed, and ends of the pair of cuts 10, 10 on the guide body 2 side are connected by a V-groove (fragile portion) 11. That is, between the support plate portion 7 and the guide body 2 side of the flange 4, the support plate portion 7
The lens 3 can be appropriately separated from the guide main body 2 together with the support plate 7 by the V groove 11.

The key top guide 1 thus formed
As shown in FIG. 3, the frame-shaped fitting portion 5 of the guide main body 2 is fitted into the switch opening 21 a of the upper case 21, and the light projecting portion 8 of the lens 3 is fitted into the LED opening 21 b of the upper case. In this state, it is bonded and fixed to the inner surface of the upper case 21.

On the other hand, the guide body 2 of the key top guide 1
Switch body 23 facing the LED and LED 24 facing the lens 3
Is incorporated on a substrate 25 disposed inside the upper case 21. The switch main body 23 is accommodated in the guide main body 2 and abuts from below on a push button block 26 that protrudes downward from the circular opening 6a of the guide main body 2. Therefore, when the key top 22 is pressed, the key top 22 is guided by the guide body 2 and is immersed in the guide body 2,
The switch main body 23 is pushed through the push button block 26.

The LED 24 faces the lens body 9 of the lens 3 from below with a small gap. The light of the LED 24 is collected by the lower end of the lens body 9 formed in a concave lens shape, transmitted through the lens body 9, and emitted from the light projecting unit 8 to the outside.

As described above, according to the present embodiment, the flange 4
Since the lens 3 and the support plate 7 are configured to be separable by the V-groove 11 formed in the keyway guide, the key-top guide 1 with illumination and the key-top guide 1 without illumination can be configured extremely easily. Can be. Therefore, even though it is a single part integrally formed by a resin mold, it can be used as two types of key top guides 1 as appropriate, and the number of parts and the number of assembling steps due to sharing of parts are reduced. Becomes possible.

FIG. 4 shows a second embodiment of the present invention. As shown in the figure, in this embodiment, a V-groove 1 is provided on the front side of the flange 4 between the guide body 2 and the lens 3.
1 is formed. The V-groove 11 is formed so as to completely cross the flange 4 and is formed somewhat deeper than the V-groove 11 of the first embodiment, so that the support plate 7 can be easily separated from the flange 4. ing.

In both of the above embodiments, the V-groove is formed on the front side of the flange, but is not limited to the V-groove.
The groove may be a U-shaped groove or a concave groove, or these grooves may be formed from the back side or both sides of the flange. further,
Without forming a V-groove, a cut is made in a portion corresponding to the V-groove in the first embodiment while leaving a portion in the first embodiment, and a cut is formed in a portion corresponding to the V-groove in a similar manner in the second embodiment. The connecting portion may be weakened so that the support plate portion can be easily separated.

[0019]

As described above, according to the key top guide of the present invention, the key top guide having the light emitting portion of the indicator light can be constituted by a single component, and the key top guide is displayed from the key top guide main body. Since the light emitting part of the lamp can be separated, parts can be shared, and adjustment according to the presence or absence of the light emitting part can be easily performed without increasing the number of parts, improving productivity. Has an effect that can be.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a key top guide according to an embodiment.

FIG. 2 is a structural diagram of a key top guide according to the embodiment.

FIG. 3 is a cut-away side view showing a state in which a key top guide is attached to an upper case.

FIG. 4 is an overall perspective view of a key top guide according to a second embodiment.

FIG. 5 is an overall perspective view of a conventional key top guide.

FIG. 6 is a cut side view showing a state in which a conventional key top guide is attached to an upper case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Key top guide 2 Key top guide main body 3 Lens 7 Support plate part 11 V groove 21 Upper case 22 Key top 23 Switch main body

Claims (1)

(57) [Claims] 1. A switch opening and a light emitting unit opening are juxtaposed.
From the back side of the
A key top guide of a switch for guiding a switch, wherein the key top guide is fitted in the switch opening of the operation panel,
The key top guide body that guides the top, and the key top guide body that protrudes sideways from the
Attach to the operation panel in contact with the back of the panel
And a support plug connected to this flange via a fragile part for separation.
Rate portion and the surface of the support plate portion, and projecting to the light emitting portion opening.
A key top guide for a switch, wherein the key top guide is integrally provided with an indicator light emitting unit to be fitted .