JPH0515235U - Switch mechanism - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a switch mechanism that is inexpensive, has a simple structure, and is easy to assemble. [Structure] As shown in FIG. 3, the movable contact 1 has a plurality of holes 6 formed along a center line 5 of a rectangular non-conductive film 4 having elasticity, and two adjacent holes 6 and 6 are formed. A conductive member 8 such as a conductive foil is provided on the lower surface of the center of the sandwiched strip 7.
The strip-shaped piece 7 is attached between a pair of positioning members on a substrate (not shown) in a state of being curved upward. When the central portion of the strip 7 is pushed down from above by the pressing member, the central portion is bent at once in the opposite direction, and the conductive member 8 comes into contact with, for example, two contacts on the substrate, at which time the finger obtains a click.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a switch mechanism suitable for use in electronic musical instruments, electronic toys, and the like.

[0002]

[Prior Art]

 Conventionally, in electronic musical instruments and the like that use a large number of switches, a large number of switches have been prepared and arranged side by side on a substrate.

[0003]

[Problems to be solved by the device]

 The above-described conventional electronic musical instruments and the like have the problems that they are expensive because a large number of switches are used and that it takes time to install the switches.

An object of the present invention is to obtain a switch mechanism that solves the above problems.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention forms a plurality of holes along the center line of an elastic rectangular non-conductive film, and forms a central part of a strip between two adjacent holes. A movable contact having a conductive member disposed on the lower surface, a pair of positioning members arranged at intervals narrower than the width of the film in the direction perpendicular to the center line, and a plurality of contacts positioned between the pair of positioning members. And a pressing member that is located above the movable contact and presses down the central portion of the strip of the movable contact. The movable contact is warped upward between the pair of positioning members of the substrate. When the central part of the strip is pushed down by the pressing member, the curvature of the central part is inverted and the conductive member comes into contact with the contact.

[0006]

[Action]

 A plurality of strips are formed on a non-conductive film having elasticity by forming a plurality of holes, and a conductive member is arranged in the central portion of the strips to form a movable contact between a pair of positioning members of a substrate. It can be easily mounted with it warped upward. When the central part of the strip is pressed by the pressing member, the central part is bent downward at a time when the predetermined amount is pressed, and the conductive member comes into contact with a plurality of contact points to give the pressed finger a click feeling.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. The drawing shows a switch mechanism applied to an electronic musical instrument. In the drawings, 1 is a movable contact, 2 is a substrate, and 3 is a key. As shown in FIG. 3, the movable contact 1 has a plurality of holes 6 formed at equal intervals along a center line 5 of a non-conductive film 4 made of, for example, plastic and having a constant width. A conductive member 8 such as a conductive plate or a conductive foil is adhered to the lower surface of the central portion of the strip-shaped piece 7, respectively. The substrate 2 is, for example, a keyboard frame, on which a pair of positioning members 9, 9 are provided at intervals smaller than the width of the non-conductive film 4. Each positioning member 9 has a length substantially equal to the length of the non-conductive film 4, or is composed of a plurality of positioning member units arranged at regular intervals.

A plurality of, for example, two contacts 10 are formed on the substrate 2 between the pair of positioning members 9, 9 at the same intervals as the intervals of the plurality of strips 7, 7 by, for example, print printing. The movable contact 1 is attached between the pair of positioning members 9, 9 of the substrate 2 in a state of being bent upward in an arc shape, and the conductive member 8 faces the plurality of contacts 10. Each of the plurality of keys 3 has a pressing member 11 below the key 3, is mounted on the substrate 2 so as to be positioned on the strip 7, and can be tilted by a flexible portion 12 thereof. Incidentally, 13 is an upper lid of the musical instrument case.

When the key 3 is depressed from the key-released state shown in FIG. 1 to the key-depression completed state shown in FIG. 2, the strip 7 of the non-conductive film 4 of the movable contact 1 is pressed by the pressing member 11. Then, it starts to bend downward, and when it bends to some extent, it is reversed at once and the conductive member 8 comes into contact with the two contact points 10, and the finger feels a click. Thus, the two contacts are connected by the conductive member 8.

[0010]

[Effect of the device]

 INDUSTRIAL APPLICABILITY Since the present invention has the above-described configuration, it is inexpensive and simple in configuration, and is easy to assemble, and the operation of the switch provides a click feeling, and is suitable for use in, for example, electronic musical instruments. ..

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention applied to an electronic musical instrument.

FIG. 2 is a side view of the embodiment in the key-depressed state.

FIG. 3 is a perspective view of a part of the movable contact according to the above embodiment.

[Explanation of symbols]

 1 movable contact 2 substrate 3 key 4 non-conductive film 5 centerline 6 hole 7 strip 8 conductive member 9 positioning member 10 contact 11 pressing member

Claims (2)

[Scope of utility model registration request] 1. A plurality of holes are formed along a center line of an elastic square non-conductive film, and a conductive member is arranged on a lower surface of a central portion of a strip sandwiched by two adjacent holes. A movable contact, a substrate having a pair of positioning members arranged at intervals narrower than the width of the film in the direction perpendicular to the center line of the film, and a plurality of contacts located between the pair of positioning members; and a substrate above the movable contact. And a pressing member that pushes down the central portion of the strip of the movable contact downward, the movable contact is mounted between the pair of positioning members of the substrate in a state of being curved upward, and the strip of the strip is formed by the pressing member. The switch mechanism, wherein when the central part of the is pressed, the curvature of the central part is reversed and the conductive member comes into contact with the contact. 2. The pressing member is attached to a key, and a gap between a plurality of strips sandwiched between a plurality of holes of the non-conductive film is equal to a gap between the keys. Switch mechanism.