JP2556725B2 - Operation panel switch - Google Patents

Description

TECHNICAL FIELD The present invention relates to a switch used in an operation panel section of an electronic device.

(Prior Art) In recent years, with the progress of computerization of equipment, the operation panel switch is required to be easy to assemble, to be low in cost, and to be high in wiring density.

The conventional operation panel switch is configured as shown in FIG. Note that FIG. 6 is an exploded view of FIG. In FIGS. 5 and 6, 1 is a substrate, and 2 is a three-layered elastic insulating substrate 5 having a plurality of switch contacts 3 and wiring conductors 4 formed on one surface as shown in FIG. The upper layer 5a, the middle layer 5b, the lower layer 5c, and the upper layer 5a and the middle layer 5
The switch portion is such that the switch contact 3 is opposed to b, 6 is a spacer inserted between the upper layer 5a and the middle layer 5b and having a through hole 6a at least in the switch contact portion, 7 is a diaphragm, 8 is a case, Reference numeral 9 is an operation button. In addition,
Reference numeral 8a denotes a protrusion provided on the case 8 for penetrating holes formed in each member for relative alignment.

In the above configuration, when the operation button 9 is pressed by hand, the diaphragm 7 is deformed and the upper layer of the insulating substrate 5 is further deformed.
5a is deformed, the upper and lower switch contacts 3 come into contact with each other to turn on, the diaphragm returns when the hand is released, and the upper layer also returns to release the contact and turn off. As described above, the insulating substrate 5 must have elasticity so that it can be deformed and restored.

(Problems to be Solved by the Invention) By the way, in the switch portion 2 having the above-described structure, the insulating substrate 5 having elasticity is bent into three layers, and the wiring conductor 4 passes through the bent portion, so that the permanent deformation is caused. Therefore, there is a problem in that the bent portion tends to open at the time of assembling the switch, which makes the assembly very difficult.

The present invention solves the above-mentioned problems of the prior art,
It is an object of the present invention to provide an operation panel switch that prevents the bending portion from opening and facilitates installation.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides at least one through hole at a desired position in the middle layer of an insulating substrate that is folded into three layers, and through this hole, the spacer and the insulating substrate are provided. Or the spacer is also provided with a through hole at a position corresponding to the through hole provided at the desired position of the middle layer, and the upper layer and the lower layer of the insulating substrate are adhesively fixed through these through holes. It is a thing.

(Operation) In this case, since the lower layer, which is the free end, is adhesively fixed to the spacer or the upper layer, it cannot be opened. Therefore, the insulating substrate maintains the three-layer bent state, so the operation panel switch It becomes very easy to assemble.

(Example) Hereinafter, an example will be described in detail with reference to the drawings. First
FIG. 1 shows an embodiment of the present invention, and FIG. 2 is an exploded view of FIG. Here, the same reference numerals as those in the conventional example indicate the same elements, and 15 has elasticity in which a plurality of switch contacts 3 and wiring conductors 4 are formed on one surface as shown in FIG. It is an insulating substrate, which is folded into three layers to form an upper layer 15a, an intermediate layer 15b, and a lower layer 15c.
The switch contact 3 is made to face between the intermediate layer 15b and the intermediate layer 15b. Reference numeral 16 is a spacer that is inserted between the upper layer 15a and the middle layer 15b and has a through hole 16a at least in the switch contact portion. In this embodiment, the through hole 17 is formed at a desired position in the middle layer 15b.
Further, the spacer 16 and the middle layer 15b are bonded together with an adhesive 18, and the spacer 16 and the lower layer 15c are bonded and fixed through the through hole at the through hole 17 portion. Note that the adhesive is not only on the bottom surface of the spacer,
You can also attach it to the top surface.

In this embodiment having such a configuration, the insulating substrate 15 bent into three layers cannot be opened, the hole 11 through which the protrusion 8a of the case 8 penetrates is not displaced, and the assembly is very easy. .

FIG. 3 shows another embodiment of the present invention. In the case of this embodiment, a through hole 17 provided at a desired position of the intermediate layer 15b is provided.
Through holes 19 are also provided in the spacer 16 at positions corresponding to the upper and lower layers 15a and 15c of the insulating substrate through the through holes 17 and 19.
And are bonded and fixed with an adhesive 18. The present embodiment also has the same effects as the embodiment of FIG.

In addition, in the embodiment, the switch contact is turned on and off by the deformation of the diaphragm, but the diaphragm may not be a diaphragm.

(Effects of the Invention) As described above, according to the present invention, the lower layer, which is the free end of the insulating substrate bent into three layers, cannot be opened because it is adhesively fixed to the spacer or the upper layer. The insulating substrate maintains the three-layer bent state, and has an effect that the assembly of the operation panel switch becomes very easy.

[Brief description of drawings]

1 is a sectional view of an embodiment of the present invention, FIG. 2 is an exploded view thereof, FIG. 3 is a sectional view of another embodiment of the present invention, and FIG. 4 is formed on an insulating substrate. FIG. 5 is a cross-sectional view of a conventional example, FIG. 6 is a cross-sectional view of a conventional example, and FIG.
It is the exploded view. 2 ... switch part, 3 ... switch contact, 9 ... operation button, 15 ... insulating substrate, 15a ... upper layer, 15b ... middle layer, 15
c …… Lower layer, 16 …… Spacer, 17,19 …… Through hole, 18 ……
adhesive.

Claims (2)

(57) [Claims] 1. An elastic insulating substrate having a plurality of switch contacts and wiring conductors formed on one surface is bent into three layers to form an upper layer, a middle layer and a lower layer, and the switch contacts face each other between the upper layer and the middle layer. ON / OFF between the switch part, the spacer inserted between the upper layer and the middle layer and having a through hole in at least the switch contact part, and the switch contact part that is opposed by pressing the switch contact part from the outside. And an operating portion for operating the at least one through hole at a desired position of the middle layer, and the spacer and the lower layer of the insulating substrate are bonded and fixed through the hole, and the insulating substrate bent into three layers has elasticity. The operation panel switch is characterized by being prevented from opening by. 2. A spacer is also provided with a through hole at a position corresponding to a through hole provided at a desired position of the middle layer, and an upper layer and a lower layer of an insulating substrate are bonded and fixed through these through holes. Operation panel switch described.