JPH0347598U

JPH0347598U -

Info

Publication number: JPH0347598U
Application number: JP10922289U
Authority: JP
Priority date: 1989-09-19
Filing date: 1989-09-19
Publication date: 1991-05-02

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例の可動接点部材を
示す断面図、第２図は同じくその可動接点部材の
下面図、第３図は同じくその固定接点を示す説明
図、第４図ａ，ｂ，ｃは同じくそのそれぞれ異な
る作動状態を示す説明図、第５図はこの考案の他
の可動接点の配置例を示す説明図、第６図はこの
考案の他の固定接点の形状例を示す説明図、第７
図はこの考案を適用した電子楽器の鍵盤構成の一
例を示す断面図、第８図はこの考案を適用した電
子楽器の鍵盤構成の他の例を示す要部断面図、第
９図は従来の電子楽器のキースイツチを例示する
断面図である。１，２１……鍵（操作子）、２……鍵盤フレー
ム、３……板ばね、６……固定基板、７……可動
接点部材、８……第１可動接点、９ａ，９ｂ……
第２可動接点、１１……第１固定接点、１２ａ，
１２ｂ……第２固定接点。 FIG. 1 is a sectional view showing a movable contact member according to an embodiment of the invention, FIG. 2 is a bottom view of the movable contact member, FIG. 3 is an explanatory view showing the fixed contact, and FIGS. b and c are explanatory diagrams showing the respective different operating states, Fig. 5 is an explanatory diagram showing another arrangement example of the movable contacts of this invention, and Fig. 6 shows an example of the shape of another fixed contact of this invention. Explanatory diagram, 7th
The figure is a sectional view showing an example of the keyboard structure of an electronic musical instrument to which this invention is applied, FIG. 8 is a sectional view of main parts showing another example of the keyboard structure of an electronic musical instrument to which this invention is applied, and FIG. FIG. 2 is a cross-sectional view illustrating a key switch of an electronic musical instrument. DESCRIPTION OF SYMBOLS 1, 21... Key (operator), 2... Keyboard frame, 3... Leaf spring, 6... Fixed board, 7... Movable contact member, 8... First movable contact, 9a, 9b...
Second movable contact, 11...first fixed contact, 12a,
12b...Second fixed contact.

Claims

[Scope of Claim for Utility Model Registration] A movable contact member made of a flexible elastic member disposed on a fixed substrate, which integrates a dome-shaped movable part that is pressed and driven by an actuator of a musical tone control operator; a small first movable contact provided in the center of the inner surface of the movable portion of the contact member; a second movable contact having the same shape as the first movable point and provided at the same height higher than the first movable contact from the substrate, corresponding to the first movable contact and the second movable contact; A key switch for an electronic musical instrument, comprising a first fixed contact and a second fixed contact provided on the fixed substrate.