JPH1031926A - Membrane switch key board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate change of a membrane switch and a surface display unit in the case of failure, and to easily remove dust, which enters in a clearance, by separating a membrane switch and a surface display unit so as to be separately changed. SOLUTION: A membrane switch 3 is inserted into a housing 4, and a surface display unit 1 is inserted in the housing 4 on the switch 3. A part 1, which is housed in the housing 4 in the overlapped condition, and the switch 3 are fixed by a claw 5. In the case of changing the part 1 because of a change of the display content or the generation of deterioration of the part 1, the part 1 is removed by hooking a pen or the like on a notch 2, which is provided in the part 1, and other part 1 is installed thereafter. In the case of changing the only switch 3 because of a failure of the switch 3, the switch 3 is removed by hooking a pen or the like on a notch 2, which is provided in the switch 3, and other switch 3 is installed thereafter. Since the switch 3 and the part 1 are separately provided, they can be separately installed or removed in/from the housing 4, and the dust, which enters a clearance, can be easily removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a membrane switch board.

[0002]

2. Description of the Related Art Conventionally, in a membrane switch keyboard, a membrane switch and a surface display section have an integral structure, and when the display contents of the surface display section are changed or when the surface display section is deteriorated. Another problem is that both the membrane switch and the surface display must be replaced. On the other hand, by providing a gap between the membrane switch and the front display unit, and inserting a replaceable insertion card having the display contents printed in the gap, the display contents of the front display unit can be changed. Japanese Utility Model Application
There is a seat key panel disclosed in Japanese Patent Publication No.

FIG. 3 is a perspective view of a seat panel of the above publication showing a conventional example. A gap 13 is provided between the surface sheet 11 and the membrane switch 12, and an insertion card 14 is inserted into the gap 13. The upper surface of the insertion card 14
The display unit 14a has graphics and the like printed thereon, and the display content of the display unit 14a can be read through the front sheet 11.

[0004]

As described above, the first problem in the prior art is that when the display contents of the front display section are changed, the insertion card may be replaced, but the front screen is not changed. -In the case of deterioration of the printed portion on the sheet or the sheet itself, both the surface sheet and the membrane switch must be replaced because the surface sheet and the membrane switch are integrated. That's what it means. Further, when it is desired to replace only the membrane switch due to a failure of the membrane switch or the like, there is a problem that both the surface sheet and the membrane switch must be replaced for the same reason.

[0005] The second problem is that if dust or the like enters the gap between the surface sheet and the membrane switch, it cannot be easily removed. An object of the present invention is to solve the above problems.

[0006]

SUMMARY OF THE INVENTION A membrane switch keyboard according to the present invention is a membrane switch keyboard including a membrane switch, a surface display section, and a housing. -The membrane switch and the surface display unit in a toroidal form can be individually attached to or detached from the housing.

[0007]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing one embodiment of the present invention. A surface display unit 1 having both a surface sheet and a display unit of an insertion card in a conventional example, a surface display unit 1 and It comprises a notch 2 provided on the membrane switch 3, a membrane switch 3, a housing 4, and a claw 5 provided on the housing 4. Characters and the like are printed on the upper surface of the front display unit 1. FIG. 2 is a cross-sectional view taken along the line AA of FIG.

In FIG. 1, first, the membrane switch 3 is inserted into the housing 4 in the direction of the arrow. Next, the front display unit 1 is inserted on the membrane switch 3 in the direction of the arrow. At this time, as shown in FIG. 2, the surface display unit 1 and the membrane switch 3 housed in the housing 4 in a stacked manner are fixed by the claws 5.

In such a state, when exchanging the front display unit 1 for changing or deteriorating the display contents of the front display unit 1, a pen point or the like is inserted into the notch 2 provided in the front display unit 1. It is hooked and removed, and another surface display unit 1 is mounted thereafter. When only the membrane switch 3 is replaced due to a failure of the membrane switch or the like, the pen point or the like is similarly hooked on the notch 2 provided in the membrane switch 3 and removed, and another membrane switch 3 is mounted thereafter.

[0011]

As described above, the first effect of the present invention is that the separation of the membrane switch and the surface display unit allows the display contents of the surface display unit to be changed and the deterioration of the surface display unit. In this case, only the front display unit needs to be replaced, and the conventional membrane switch can be used as it is. Also, when it is desired to replace only the membrane switch due to a failure of the membrane switch or the like, there is an effect that only the membrane switch needs to be replaced for the same reason.

A second effect is that when dust or the like enters the gap between the membrane switch and the surface display portion, the surface display portion can be removed and easily removed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of FIG.

FIG. 3 is a perspective view of a seat key panel showing a conventional example.

[Explanation of Signs] 1 Surface display unit 2 Notch 3 Membrane switch 4 Housing 5 Claw

Claims (3)

[Claims] 1. A membrane switch keyboard wherein a membrane switch or a surface display section can be individually replaced. 2. A membrane switch, a surface display unit,
A membrane switch board including a housing, wherein the separated sheet-like membrane switch and the surface display unit can be individually attached to or detached from the housing. Switch keyboard. 3. The membrane switch key according to claim 2, wherein said mounting is performed by a claw provided in a housing, and said mounting and demounting is performed by a notch provided in said membrane switch and said surface display portion. Board.