JPH0485494U - - Google Patents
Info
- Publication number
- JPH0485494U JPH0485494U JP12953890U JP12953890U JPH0485494U JP H0485494 U JPH0485494 U JP H0485494U JP 12953890 U JP12953890 U JP 12953890U JP 12953890 U JP12953890 U JP 12953890U JP H0485494 U JPH0485494 U JP H0485494U
- Authority
- JP
- Japan
- Prior art keywords
- leaf spring
- lid
- metal fitting
- keyboard
- pressing
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Electrophonic Musical Instruments (AREA)
- Casings For Electric Apparatus (AREA)
Description
第１図はこの考案による鍵盤蓋の開閉機構の一
実施例の要部を示す斜視図、第２図は鍵盤蓋の回
動位置に基づく作用状態を示す側面図、第３図は
第２図の作用状態における鍵盤蓋への負荷図、第
４図は従来の鍵盤蓋の開閉機構を示す側面図であ
る。
図において、１……ケース、２……奥屋根、３
……鍵盤蓋、４……ステー、５……ばね押圧金具
、６……ストツパー、７……板ばね、８……摩擦
部材、９……受け金具、である。
Fig. 1 is a perspective view showing the main parts of an embodiment of the keyboard lid opening/closing mechanism according to this invention, Fig. 2 is a side view showing the operating state based on the rotational position of the keyboard lid, and Fig. 3 is the same as Fig. 2. FIG. 4 is a side view showing a conventional keyboard lid opening/closing mechanism. In the diagram, 1... Case, 2... Back roof, 3
... Keyboard lid, 4 ... Stay, 5 ... Spring pressing fitting, 6 ... Stopper, 7 ... Leaf spring, 8 ... Friction member, 9 ... Receiving metal fitting.
Claims (1)
に蝶着された鍵盤蓋において、 一端が鍵盤蓋の裏面に取着され、他端を後方に
延設してばね押圧金具を有するステーと、 閉蓋状態で前記ばね押圧金具の後方で、一端が
奥屋根裏面またはケース内面に取着されて任意角
度で折曲する自由端の表面に摩擦部材を貼着して
なる板ばねと、 該板ばねの自由端の端部裏面に近接して前記ケ
ースに植設した受け金具とからなり、 鍵盤蓋の開閉動作途中では前記ステーの回動に
伴うばね押圧金具により板ばねを押圧し、該板ば
ねを受け金具に圧接することにより、板ばねを片
持ち支持より２点支持に移行して反力を増大させ
、該板ばねの反力と前記摩擦部材の摩擦力とを鍵
盤蓋に弾性付与して自重による落下を減殺し、閉
蓋直前では前記受け金具は板ばねの押圧を離脱し
て鍵盤蓋への負荷を解除するようにしたことを特
徴とする鍵盤蓋の開閉機構。[Scope of claim for utility model registration] A keyboard lid rotatably hinged to the back roof fixed to the rear of the top of the case, with one end attached to the back of the keyboard lid and the other end extending rearward. A stay having a spring pressing metal fitting, and a friction member attached to the surface of a free end that is bent at an arbitrary angle with one end attached to the back surface of the rear roof or the inner surface of the case behind the spring pressing metal fitting when the lid is closed. and a receiving metal fitting installed in the case in close proximity to the back surface of the free end of the leaf spring. By pressing the leaf spring and pressing the leaf spring against the receiving metal fitting, the leaf spring is shifted from cantilever support to two-point support to increase the reaction force, and the reaction force of the leaf spring and the friction of the friction member are increased. The keyboard is characterized in that the force is imparted to the keyboard lid with elasticity to reduce falling due to its own weight, and just before the lid is closed, the receiving fitting releases the pressure of the leaf spring to release the load on the keyboard lid. Lid opening/closing mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990129538U JPH0743756Y2 (en) | 1990-11-30 | 1990-11-30 | Keyboard lid opening / closing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990129538U JPH0743756Y2 (en) | 1990-11-30 | 1990-11-30 | Keyboard lid opening / closing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0485494U true JPH0485494U (en) | 1992-07-24 |
| JPH0743756Y2 JPH0743756Y2 (en) | 1995-10-09 |
Family
ID=31876937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990129538U Expired - Lifetime JPH0743756Y2 (en) | 1990-11-30 | 1990-11-30 | Keyboard lid opening / closing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0743756Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4711821U (en) * | 1971-03-08 | 1972-10-12 | ||
| JPS5998492U (en) * | 1982-12-23 | 1984-07-03 | ヤマハ株式会社 | Keyboard lid opening/closing mechanism for keyboard instruments |
-
1990
- 1990-11-30 JP JP1990129538U patent/JPH0743756Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4711821U (en) * | 1971-03-08 | 1972-10-12 | ||
| JPS5998492U (en) * | 1982-12-23 | 1984-07-03 | ヤマハ株式会社 | Keyboard lid opening/closing mechanism for keyboard instruments |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0743756Y2 (en) | 1995-10-09 |
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