JPS63153296U - - Google Patents
Info
- Publication number
- JPS63153296U JPS63153296U JP4544287U JP4544287U JPS63153296U JP S63153296 U JPS63153296 U JP S63153296U JP 4544287 U JP4544287 U JP 4544287U JP 4544287 U JP4544287 U JP 4544287U JP S63153296 U JPS63153296 U JP S63153296U
- Authority
- JP
- Japan
- Prior art keywords
- keyboard
- chassis
- tension spring
- tension
- fulcrum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Description
図面は本考案に係る電子楽器の鍵盤機構の１実
施例を示すもので、第１図は縦断面図、第２図は
要部斜視図、第３図ａ，ｂ，ｃは作用説明図、第
４図、第５図は押鍵特性曲線を示すグラフである
。
１…鍵盤、２，３…軸受溝、４，５…支点軸、
６…シヤーシ、７…隙間、８…引張ばね、９…ア
クシヨン部材、Ｐ…ばね８の引張線、Ｑ…直線。
The drawings show one embodiment of the keyboard mechanism of an electronic musical instrument according to the present invention, in which Fig. 1 is a longitudinal cross-sectional view, Fig. 2 is a perspective view of the main part, Fig. 3 a, b, and c are explanatory views of the operation. FIGS. 4 and 5 are graphs showing key press characteristic curves. 1... Keyboard, 2, 3... Bearing groove, 4, 5... Fulcrum shaft,
6... Chassis, 7... Gap, 8... Tension spring, 9... Action member, P... Tensile line of spring 8, Q... Straight line.
Claims (1)
，３と回動可能に嵌合する支点軸４，５をシヤー
シ６に隙間７をおいて設け、支点軸４，５間のシ
ヤーシ６と鍵盤１との間に引張ばね８を介装し、
さらに鍵盤１を下方より押上げるアクシヨン部材
９をシヤーシ６へ鍵盤操作に応じて回動可能に軸
支し、鍵盤１の操作により移動する引張ばね８の
引張線Ｐが前記支点軸々心とシヤーシ側ばね支点
を結ぶ直線Ｑを鍵盤操作時に横切るように構成さ
れる電子楽器の鍵盤機構。 Horizontal bearing grooves 2 provided on the left and right sides of the rear end of the keyboard 1
, 3 are rotatably fitted to the chassis 6 with a gap 7 therebetween, and a tension spring 8 is interposed between the chassis 6 and the keyboard 1 between the fulcrum shafts 4 and 5.
Furthermore, an action member 9 that pushes up the keyboard 1 from below is pivotably supported on the chassis 6 so as to be rotatable in accordance with the keyboard operation, and the tension line P of the tension spring 8 that moves when the keyboard 1 is operated is connected to the center of the fulcrum shaft and the chassis 6. A keyboard mechanism for an electronic musical instrument configured to cross a straight line Q connecting side spring supports when operating the keyboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4544287U JPS63153296U (en) | 1987-03-27 | 1987-03-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4544287U JPS63153296U (en) | 1987-03-27 | 1987-03-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63153296U true JPS63153296U (en) | 1988-10-07 |
Family
ID=30864181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4544287U Pending JPS63153296U (en) | 1987-03-27 | 1987-03-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63153296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008241885A (en) * | 2007-03-26 | 2008-10-09 | Yamaha Corp | Keyboard device for electronic musical instrument |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6070491A (en) * | 1983-09-27 | 1985-04-22 | ヤマハ株式会社 | Keyboard unit for electronic musical instrument |
-
1987
- 1987-03-27 JP JP4544287U patent/JPS63153296U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6070491A (en) * | 1983-09-27 | 1985-04-22 | ヤマハ株式会社 | Keyboard unit for electronic musical instrument |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008241885A (en) * | 2007-03-26 | 2008-10-09 | Yamaha Corp | Keyboard device for electronic musical instrument |
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