JPH0449796Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a push button switch used as a tone setting switch of an electronic musical instrument.

[Prior Art] Fig. 5 is a front view showing the configuration of a conventional push button switch of this type, Fig. 6 is a perspective view of the push button switch shown in Fig. 5, and Fig. 7 is a sectional view of the push button switch shown in Fig. 5. It is. The push button switch 2 shown in these figures includes a rectangular parallelepiped-shaped operating section 4, a skirt section 5 that goes around and is connected to the lower part of each side of the operating section 4, and a skirt section 5 that is joined to the skirt section 5 and connected to the lower part of the operating section 4. A bottom plate portion 6 having a rectangular opening is integrally molded from a rubber material. Furthermore, a conductive contact rubber 7 is provided at the center of the lower surface of the operating section 4, as shown in FIG. This contact rubber 7 is normally separated from the printed circuit board 1, but when the push button switch 2 is pressed in the direction of arrow A shown in FIG.
However, the two independent contacts of the switch circuit formed on the printed circuit board 1 are brought into contact with the bridge and made conductive. Furthermore, when the finger pressure is released, the elastic skirt 5 returns to its original state due to its repulsive force. In addition,
3 in FIG. 5 is a panel of the main body of the electronic musical instrument. The push button switch described above is integrally molded using rubber, but a configuration as shown in FIG. 8 is also known. In this figure, reference numeral 7 denotes a plastic rectangular parallelepiped operating section having a protrusion 7a, and a bowl-shaped rubber 8 is attached to the center of the lower surface of the operating section 7. Contact rubber is applied inside this rubber 8, and normally the board 1
I am careful not to touch it. Then, when the operating part 7 is pressed in the direction of arrow A1, the two contact parts on the board 1 become conductive, similar to the one in FIG. 5, and when the pressure is released, the repulsive force of the rubber 8 restores the original state. return.

[Problem to be solved by the invention] By the way, the push-button switches shown in FIGS. The problem was that it was difficult to install.

This invention was developed against this background, and the object of this invention is to provide a push button switch that is suitable for being attached to a corner of a panel of an electronic musical instrument, etc.

[Means for Solving the Problems] This invention provides a push button switch configured by integrally molding an operating portion, a bottom plate portion, and a skirt portion connecting the operating portion and the bottom plate portion with an elastic member. The device is characterized in that the width of the portion is narrowed, and the operation portion and the bottom plate portion are integrally molded in a shape that is very close to each other.

[Function] According to the above configuration, when the pressing surface of the L-shaped operating portion is pressed, the operating portion rotates about the corner of the L-shape as a fulcrum. This allows the contact rubber to
It passes through the rectangular opening in the bottom plate and moves up and down, making the contacts on the board conductive.

In addition, since the push button part is L-shaped, its surface can be used as part of the external design, and is particularly suitable for attaching to a corner of a panel.

[Example] Hereinafter, an example of this invention will be described with reference to the drawings. 1 and 2 are a side view and a sectional view of a push button switch according to this invention.

The push button switch shown in these figures has a bottom plate portion 10.
and the skirt parts 11a to 11c and the operation part 12,
It is integrally formed from rubber material. Operation unit 12
has a substantially L-shaped cross section, and a bottom part is the bottom plate 10.
When the push button switch is attached to the panel of an electronic musical instrument, the surface C that is pressed is horizontal, and the surface B facing the front of the electronic musical instrument is vertical. Here, the side having the L-shaped surface C on which finger pressure is applied will be referred to as the horizontal portion, and the side having the other surface B will be referred to as the vertical portion. In addition, conductive contact rubber 1 is placed in the center of the lower surface of the horizontal part as shown in Figure 2.
3 is installed. Skirt portion 11a-1
1c is joined to the lower portions of three sides, that is, both sides of the horizontal portion of the operation unit 12 and the side between them, that is, the side opposite to the surface B. Skirt portions 11a on both sides,
11c is wide at one end and becomes narrower toward the corner of the L-shape. Further, the skirt portion 11b has a substantially rectangular shape. The bottom plate 10 is joined to the lower part of the skirt part 11 and has a rectangular opening in the center. When the operating portion 12 is pressed, the contact rubber 13 is configured to pass through the rectangular opening. When the push-button switch configured in this way is attached to a board on which two contacts are formed and the operating section 12 is pressed in the direction of arrow A2, the operating section 12 rotates about the point S at the corner of the L-shape as a fulcrum. This lowers the contact rubber 13, bringing the two contacts on the board into contact with the bridge and making them conductive. and,
When the finger pressure is released, the elastic skirt 11 returns to its original state due to its repulsive force.

By the way, the above-mentioned push button switch is usually formed as a plurality of pieces. Figure 3 shows a push button switch unit 14 that has four switches integrally molded.
, a substrate 15 on which a contact pattern is formed, and a panel 16 of an electronic musical instrument in which four holes are hollowed out into which each operating section 12 of the push button switch unit 14 is inserted.
FIG. Attach the board 15 to the bottom plate 18 of the push button switch unit 14,
Furthermore, it is attached to the panel 16. In this way, the pushbutton switch unit 14 can be connected to the panel 16.
When mounted on the panel 16, holes are pre-drilled in the corners of the panel 16 at the same spacing as the push button switches, making positioning easy. Moreover,
As shown in FIG. 4, the push button switch unit 14 mounted in this manner has its surface B facing the front, so that it becomes part of the external design of the electronic musical instrument body, and a unique design effect can be obtained.

[Effects of the Invention] As explained above, according to this invention, the lower part of the operating section is shaped very close to the bottom plate, so that it can be attached to a corner of the panel of an electronic musical instrument. In this case, the surface of the operating section can be used as part of the external design, which has the effect of increasing the degree of freedom in design. Further, according to this invention, there is an effect that the skirt portion can be reduced to three sides, whereas conventionally four sides were required.

[Brief explanation of the drawing]

FIG. 1 is a side view of a push button switch according to this invention, FIG. 2 is a sectional view of the same push button switch, and FIG. 3 is a push button switch unit 14 in which four switches are integrally molded, and a substrate 15 on which contacts are formed. A perspective view of the panel 16 of the electronic musical instrument to which the push-button switch unit 14 is attached, seen from the back, FIG. 4 is a partially enlarged perspective view of the push-button switch attached to the electronic musical instrument body, and FIG. 5 is a perspective view of the conventional push-button switch. 6 is a perspective view of the push button switch, FIG. 7 is a sectional view of the push button switch, and FIG. 8 is a front view of a conventional push button switch using a plastic operating portion 7. DESCRIPTION OF SYMBOLS 10... Bottom plate part, 11a-11c... Skirt part, 12... Operation part, 13... Contact rubber.

Claims (1)

[Scope of utility model registration request] In a push button switch configured by integrally molding an operating part, a bottom plate part, and a skirt part connecting the operating part and the bottom plate part, the width of a part of the skirt part is narrowed to separate the operating part and the bottom plate part. A push button switch characterized by being integrally molded in a shape that is very close to each other.