JPH03129998U

JPH03129998U -

Info

Publication number: JPH03129998U
Application number: JP3890590U
Authority: JP
Priority date: 1990-04-11
Filing date: 1990-04-11
Publication date: 1991-12-26

Description

[Brief explanation of drawings]

第１図は本考案の１実施例を示す断面図、第２
Ａ図は第１図に示す鍵とハンマーアームの取付部
位を示す分解斜視図、第２Ｂ図は錘荷重と鍵の変
位量との関係を示す特性図、第３図は本考案の第
２実施例を示す断面図、第４図は第３図の鍵とハ
ンマーアームの取付部位を示す平面図、第５図は
本考案の第３実施例を示す断面図である。１……鍵盤シヤーシ、１ａ……上鍵盤シヤーシ
、１ｂ……下鍵盤シヤーシ、２……鍵、３……ハ
ンマーアーム、４……鍵支持部、１１，１２……
嵌合突起、１３……鍵本体、１４……取付部、１
５，１６……支軸、１９……溝、２０，２１……
側壁、２２，２３……嵌合孔、４５，４６……取
付片、４７……支軸。 Fig. 1 is a sectional view showing one embodiment of the present invention;
Figure A is an exploded perspective view showing the attachment part of the key and hammer arm shown in Figure 1, Figure 2B is a characteristic diagram showing the relationship between the weight load and the displacement of the key, and Figure 3 is the second implementation of the present invention. FIG. 4 is a plan view showing the attachment portion of the key and hammer arm of FIG. 3, and FIG. 5 is a sectional view showing a third embodiment of the present invention. 1...Keyboard chassis, 1a...Upper keyboard chassis, 1b...Lower keyboard chassis, 2...Key, 3...Hammer arm, 4...Key support, 11, 12...
Fitting protrusion, 13... Key body, 14... Mounting part, 1
5, 16... Support shaft, 19... Groove, 20, 21...
Side wall, 22, 23... Fitting hole, 45, 46... Mounting piece, 47... Support shaft.

Claims

[Scope of claims for utility model registration] (1) In the key support part provided on the keyboard chassis,
A key is rotatably held in the vertical direction, and a substantially central part is rotatably supported by the key support part, and one end of the key comes into contact with a part of the key, and when the key is pressed down, the key is rotated. A keyboard device comprising a hammer arm that rotates about a key support part as a fulcrum. (2) The keyboard device according to claim (1), wherein a pivot point of the key and a pivot point of the hammer arm are arranged on the same axis of the key support portion. (3) The keyboard device according to claim (1), further comprising musical tone characteristic indicating means for indicating the characteristic of a musical tone to be generated in response to a key depression operation of the key. (4) The keyboard device according to claim (3), wherein the musical tone characteristic indicating means instructs the characteristic of the musical tone to be generated in response to a rotational operation of the hammer arm.