JPH0472286U - - Google Patents
Info
- Publication number
- JPH0472286U JPH0472286U JP11584390U JP11584390U JPH0472286U JP H0472286 U JPH0472286 U JP H0472286U JP 11584390 U JP11584390 U JP 11584390U JP 11584390 U JP11584390 U JP 11584390U JP H0472286 U JPH0472286 U JP H0472286U
- Authority
- JP
- Japan
- Prior art keywords
- lid
- opening
- spring
- closing
- torsion coil
- 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
- 238000010586 diagram Methods 0.000 description 1
Description
第１図、第２図及び第３図は本考案の実施例に
おける、鍵盤楽器の蓋開閉装置の断面図、第４図
は操作部蓋の拡大斜視図、第５図は操作部蓋の角
度θと開閉動作時の力Ｐの関係を表した特性曲線
図、第６図は従来の鍵盤楽器の全体斜視図、第７
図及び第８図は従来の鍵盤楽器の蓋開閉装置の断
面図である。
１……操作パネル、２……操作部蓋、３……蓋
支点、４……バネ取付金具、５……蓋可動板、６
……ねじりコイルバネ。
Figures 1, 2, and 3 are cross-sectional views of a lid opening/closing device for a keyboard instrument according to an embodiment of the present invention, Figure 4 is an enlarged perspective view of the operating unit lid, and Figure 5 is an angle of the operating unit lid. Characteristic curve diagram showing the relationship between θ and force P during opening/closing operation. Figure 6 is an overall perspective view of a conventional keyboard instrument. Figure 7
8 and 8 are cross-sectional views of a conventional lid opening/closing device for a keyboard instrument. 1... Operation panel, 2... Operation unit lid, 3... Lid fulcrum, 4... Spring mounting bracket, 5... Lid movable plate, 6
...Torsion coil spring.
Claims (1)
、前記操作部蓋の開閉支点より後方に連結した蓋
可動板と、前記蓋可動板の後端部に形成したバネ
案内軸と、前記バネ案内軸にコイル中心を保持さ
れたねじりコイルバネと、操作部蓋の開閉動作角
度の２等分線上に位置して前記開閉支点からの回
動半径距離が前記ねじりコイルバネのコイル中心
までの距離より短い距離となる位置に形成された
バネ作用軸とから成り、前記ねじりコイルバネの
固定腕を前記蓋可動板に掛け、一方の作用腕を前
記バネ作用軸に掛けたとき、前記作用腕の略先端
に、バネ力を増加させるフツクを形成したことを
特徴とする鍵盤楽器の蓋開閉装置。 an operating unit lid having an opening/closing fulcrum at the rear of the operating panel; a movable lid plate connected to the rear of the opening/closing fulcrum of the operating unit lid; a spring guide shaft formed at the rear end of the movable lid plate; and the spring guide. A torsion coil spring whose coil center is held on the shaft, and a rotation radius distance from the opening/closing fulcrum that is located on the bisector of the opening/closing operation angle of the operation unit lid and is shorter than the distance to the coil center of the torsion coil spring. and a spring acting shaft formed at a position such that when the fixed arm of the torsion coil spring is hung on the lid movable plate and one working arm is hung on the spring acting shaft, approximately at the tip of the working arm, A lid opening/closing device for a keyboard instrument, characterized in that a hook is formed to increase spring force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11584390U JPH0472286U (en) | 1990-11-02 | 1990-11-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11584390U JPH0472286U (en) | 1990-11-02 | 1990-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0472286U true JPH0472286U (en) | 1992-06-25 |
Family
ID=31863646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11584390U Pending JPH0472286U (en) | 1990-11-02 | 1990-11-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0472286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001013955A (en) * | 1999-06-30 | 2001-01-19 | Kawai Musical Instr Mfg Co Ltd | Keyboard lid device for keyboard instruments |
-
1990
- 1990-11-02 JP JP11584390U patent/JPH0472286U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001013955A (en) * | 1999-06-30 | 2001-01-19 | Kawai Musical Instr Mfg Co Ltd | Keyboard lid device for keyboard instruments |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0472286U (en) | ||
| JPH0544463Y2 (en) | ||
| JPS5924876U (en) | A device to prevent clothing from getting caught in the opening of the hinge in a door-type clothes dance. | |
| JPS61158896U (en) | ||
| JPH0544465Y2 (en) | ||
| JPS59115074U (en) | Lid opening/closing mechanism | |
| JPH0199382U (en) | ||
| JPH0336037U (en) | ||
| JPS60152777U (en) | Arm cover device for vehicle sliding door | |
| JPS6374636U (en) | ||
| JPS5988622U (en) | Operation lid opening/closing device | |
| JPS6294269U (en) | ||
| JPS60162297U (en) | Swing angle adjustment device | |
| JPS6125462U (en) | Open/close lid lock position adjustment device | |
| JPH0383973U (en) | ||
| JPH0428578U (en) | ||
| JPH02127415U (en) | ||
| JPH0281889U (en) | ||
| JPS62110475U (en) | ||
| JPH0271045U (en) | ||
| JPH02105078U (en) | ||
| JPH02126224U (en) | ||
| JPS6369028U (en) | ||
| JPS6296472U (en) | ||
| JPH0281888U (en) |