JPS63146098A - Laminar flat switch and manufacture thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION As shown in FIG. 1, a conventional keyboard switch device for an electronic musical instrument includes a conductive silicone rubber 1 consisting of a fixed part 1a, a support piece 1b, and a moving part 1-1c, and a conductor. Carbon 2, 3 and
From the spacer 4.5 located between the silicone rubber 1 and the conductive carbon 2, 3 (11), the actuator 6 pushes down the movable part 1c of the silicone rubber 1 as the key is pressed, so that the movable part 1c becomes a conductor. It comes into contact with carbon 2 and 3 and turns on.Then, when you press the key,
This overstroke of the key is absorbed by the hollow part of the moving part 1c.

[Problem that the invention seeks to solve]

However, conventional keyboard switches have the disadvantage that they have a LM"At structure, have a large number of parts, and require time and effort to assemble.

An object of the present invention is to provide a layered plane switch that is easy to assemble when applied to a keyboard switch of an electronic musical instrument, and a method for manufacturing the same.

[Means for solving problems]

In order to solve the above problems, according to the layered planar switch of the present invention, a first conductive layer, a second conductive layer disposed opposite to the first conductive layer, and a first conductive layer are provided. 9 electric layer and 2nd
a spacer inserted between the first conductive layer and the second conductive layer to form a predetermined gap between the first conductive layer and the second conductive layer; A flexible and insulating film sandwiching a conductive layer.

Further, according to the layered planar switch of the present invention, the first conductive layer, the second conductive layer disposed opposite to the first conductive layer, and the first conductive layer are arranged to face each other. a spacer inserted between the first conductive layer and the second conductive layer to form a predetermined gap between the spacer and the second conductive layer;
Each opposing first conductive layer and a plurality of second conductive layers are sandwiched between each other so that portions of each opposing first conductive layer and a plurality of second conductive layers can be deformed independently. The first conductive layer and the second conductive layer each include a single flexible and insulating film in which cut portions are formed between portions of the conductive layer.

Furthermore, according to the method for manufacturing a layered planar switch of the present invention, the first step of forming a first conductive layer and a second conductive layer on a single flexible and insulating film; 1
a second step of bending the film so that the conductive layer and the second conductive layer correspond to each other, and forming a switch part in the opposing part of the first conductive layer and the second conductive layer. It is composed of:

[Effect]

In the layered back switch of the present invention, a first conductive layer and a first main conductive layer are formed on -L of a single flexible and insulating film, and this film is connected to the first conductive layer and the first conductive layer. The second conductive layer is bent so as to face each other, and the opposing part of the first J and 9 conductive layers and the second isoelectric layer is used as a switch part. It is very easy to manufacture and is very easy to manufacture.

In addition, in order to apply it to a keyboard switch of an electronic musical instrument, when the switch part is formed with +h n, each switch part can be operated completely independently by providing a notch part between each switch part. Moreover, manufacturing in this case is also very easy.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a sectional side view showing an embodiment of the layered plane switch according to the present invention applied to a keyboard switch device for a musical instrument. The key 10 is normally located at the position indicated by the solid line, and when the key is pressed, it is at the position indicated by the dashed-dotted line. Therefore, the actuator 11 disposed at one end of the key 10 rises as the key is pressed.

On the other hand, a metal elastic body 13 is disposed on the frame 12, and a keyboard switch 14 is disposed on the lower surface of this metal elastic body 13.

FIG. 3 is an enlarged view of the main part of FIG. 2. Keyboard switch 1
4 is polyester film 15, conductor paste 16.1
7 and spacers (nonconductor paste) 18 and 19. Spacers 18 and 19 are conductive paste 16
A space 20 is formed between the conductive pastes 16 and 17, and the conductive pastes 16 and 17 are made non-conductive. Further, the polyester film 15 sandwiches the conductor paste 16.degree. 17 and the spacers 18, 19 to form the keyboard switch into a film layer fIY+ structure.

Here, when the actuator 11 rises as a result of pressing a key on the keyboard, this actuator 11 rises as shown in FIG.
deforms the polyester film 15 and the conductive paste 17 in the space 20 formed in the switch 14 to bring the conductive paste 17 into contact with the conductive paste 16,
When it rises further, the metal elastic body 13 is bent. The overstroke of the key 10 is absorbed by the curvature of the metal elastic body 13.

FIG. 5 is a top view of the metal elastic body 13 shown in -.
The figure is a perspective view of the actuator 11. As is clear from the figure, the elastic metal body 13 has two leaves 1.3.
a and 13b are formed, and the actuator 11 is formed with two stepped contact portions 11a and llb. These two glue sheets 713a, 13b and the two contact portions 11a, llb of the actuator 11 are for detecting the key pressing speed. That is, the contact portion 11a
is a keyboard switch (not shown) disposed on the leaf 13a.
A key depression is detected based on the time it takes for the contact portion 11b to turn on the keyboard switch provided on the leaf 13b after turning on the key. Further, this key pressing speed Jri is used to control the volume.

7 to 9 show other embodiments of a switch device for an electronic musical instrument keyboard to which the layered plane switch according to the present invention is applied. FIG. 7 shows an embodiment in which the actuator 11 moves down in response to a key press. In this case, it goes without saying that the keyboard switch 14 is arranged on the upper surface of the metal elastic body 13.

FIG. 8 shows an embodiment in which the actuator 1] is fixed to the frame 21, and the metal elastic body 13 on which the keyboard switch 14 is disposed is disposed on the key [0].

Moreover, FIG. 9 shows an embodiment in which a resin foam body 22 is used instead of the metal elastic body. In this case, when the actuator 11 rises, the keyboard switch 14 is turned on, and when the actuator 11 rises further, this overstroke is absorbed by the deformation of the resin foam 22 disposed within the frame 23.

In addition, in FIGS. 7 to 9, the same reference numerals are given to parts that perform the same operations as in FIG. 3. Also,
In the above embodiments, the keyboard switch is supported by the elastic body in all cases, but the actuator may be supported by the elastic body, and both the keyboard switch and the actuator may be supported by the elastic body. 1j
1 shi is fine.

FIG. 10 is a developed view showing the structure of the layered planar switch of the present invention, and FIG. 11 is a sectional view taken along the line A in FIG.
, 24b, 24c, and 24d are one set (leaves corresponding to one key), and a plurality of sets of leaves are formed in the longitudinal direction of the polyester film 21. In addition, the leaf 24a
, 24b.

24c and 24d are located at symmetrical positions with respect to the broken line portion 25. Further, as shown in FIG. 11, a conductor paste 26 and a spacer 27 are provided on the left leaf, a conductor paste 28 is provided on the right leaf, and wiring to each conductor paste is provided on the polyester film 24. A pattern 29 is also formed.

The polyester film 24 thus formed is bent at the broken line portion 25 to form a keyboard switch 14 as shown in FIG. Note that the bent polyester film 24 has the same shape as the metal elastic body 13 shown in FIG. 3.

Therefore, the metal leaf and the keyboard switch can be easily assembled, and the switch can be made flat.

Note that the metal elastic body 30 is not limited to the shape shown in FIG. 3, but may have leaves 30a and 30b of the metal elastic body 30 facing each other, as shown in FIG. 12, for example. Incidentally, in the above embodiments, the case where the layered planar switch of the present invention is applied to a keyboard switch of an electronic musical instrument has been described.
Of course, it can be similarly applied to switches of other devices other than electronic musical instruments. [Effects of the Invention] As explained below, according to the present invention (111 is a small and easy to assemble device) The present invention can be applied to a switch in which a large number of switch sections are arranged in a predetermined arrangement, and the above-mentioned effects become particularly remarkable.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an example of a conventional keyboard switch device, FIG. 2 is a cross-sectional side view showing an embodiment in which a layered plane switch according to the present invention is applied to an electronic musical instrument keyboard switch device, and FIG. is an enlarged view of the main part of Fig. 2, Fig. 4 is an enlarged view of the main part of Fig. 2 showing the switch operation, Fig. 5 is a plan view showing an example of an elastic metal body, and Fig. 6 is an example of an actuator. 7, 8, and 9 are side views showing other embodiments in which the layered plane switch according to the present invention is applied to a switch device for an electronic musical instrument keyboard, and FIG. 10 is a side view showing the present invention. A developed view showing 114 structures of a layered planar switch,
FIG. 11 is a sectional view taken along the line AA in FIG. 10, and FIG. 12 is a bottom view showing another example of the elastic metal body. 10...Key, 11...Actuator, 12.21
．． 23...Frame, 13.30...Metal elastic body,]4...Keyboard switch, 15.24...Polyester film, 16.1
7,26.28...Conductor paste, 18.19.27
···Spacer. 28 Title of the Invention: Plain Plane Switch and its Manufacturing Method 3; Relationship with the Amendment Case Patent Applicant: Yamaha Corporation 4, Agent (104) 2-11-2 Ginza, Chuo-ku, Tokyo, I September 2, 1962

Claims (3)

[Claims] (1) A first conductive layer, a second conductive layer disposed opposite to the first conductive layer, and a predetermined gap between the first conductive layer and the second conductive layer. a spacer inserted between the first conductive layer and the second conductive layer to form a flexible and insulating spacer that is bent in two and sandwiching the first conductive layer and the second conductive layer; A layered planar switch with a single layer of film. (2) a second conductive layer disposed opposite to the first conductive layer; and a first conductive layer arranged to form a predetermined gap between the first conductive layer and the second conductive layer. a spacer inserted between the first conductive layer and the second conductive layer; A flexible and flexible material having notches formed between opposing portions of the first conductive layer and the second conductive layer so that the portions of the conductive layer and the second conductive layer can be deformed independently, respectively. A layered plane switch comprising a single piece of insulating film. (3) a first step of forming a first conductive layer and a second conductive layer on a single flexible and insulating film; A method for manufacturing a layered planar switch, comprising: a second step of bending the film in a corresponding manner to form a switch portion at a facing portion of the first conductive layer and the second conductive layer.