JPS6321028Y2 - - Google Patents
Info
- Publication number
- JPS6321028Y2 JPS6321028Y2 JP1982025543U JP2554382U JPS6321028Y2 JP S6321028 Y2 JPS6321028 Y2 JP S6321028Y2 JP 1982025543 U JP1982025543 U JP 1982025543U JP 2554382 U JP2554382 U JP 2554382U JP S6321028 Y2 JPS6321028 Y2 JP S6321028Y2
- Authority
- JP
- Japan
- Prior art keywords
- spring
- repetition lever
- screw member
- lever spring
- shaft rod
- 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.)
- Expired
Links
- 229920003002 synthetic resin Polymers 0.000 claims description 4
- 239000000057 synthetic resin Substances 0.000 claims description 4
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
Landscapes
- Stringed Musical Instruments (AREA)
- Auxiliary Devices For Music (AREA)
- Milling, Drilling, And Turning Of Wood (AREA)
- Springs (AREA)
Description
【考案の詳細な説明】
この考案はグランドピアノにおいてレピテイシ
ヨンレバースプリングの強さを簡単な手段によつ
て調節できるようにした調整装置に関する。[Detailed Description of the Invention] This invention relates to an adjusting device that allows the strength of a repetition lever spring in a grand piano to be adjusted by a simple means.
一般にグランドタイプのピアノアクシヨンで
は、第１図に示すようにレピテイシヨンレバース
プリング１の中央コイル部１ａをウイツペン２上
に直立させたポスト３に枢支し、その湾曲上端部
１ｂをレピテイシヨンレバー４の下面に設けたみ
ぞ部４ａの底面に当接させると共に下端部１ｃを
ジヤツク５の枢支部近傍に挿入係止させ、ウイツ
ペンヒール２ａを介して鍵からエネルギーが伝達
された際には、一方でレピテイシヨンレバー４を
持ち上げ、他方ではジヤツク５をハンマーシヤン
ク７のローラ６の下部へ引き戻すようにしてい
る。 In general, in a grand type piano action, the central coil part 1a of the repetition lever spring 1 is pivotally supported on a post 3 that stands upright on the lever spring 2, and its curved upper end part 1b is connected to the repetition lever spring 1, as shown in Fig. 1. When the lower end 1c is inserted and locked in the vicinity of the pivot portion of the jack 5, and the energy is transmitted from the key via the opening heel 2a, On the one hand, the repetition lever 4 is raised, and on the other hand the jack 5 is pulled back to the bottom of the roller 6 of the hammershank 7.
そのため、レピテイシヨンレバースプリング１
のばね力が強過ぎると鍵盤タツチが悪くなり、ま
た、弱過ぎると鍵盤タツチが悪くなるばかりでな
く、ジヤツク５がローラ６の下部へ入り込めなく
なつて連打ができなくなる恐れがある。 Therefore, the repetition lever spring 1
If the spring force is too strong, the touch on the keyboard will be poor, and if it is too weak, not only will the touch on the keyboard be poor, but the jack 5 may not be able to enter the lower part of the roller 6, making it impossible to play repeatedly.
このように、レピテイシヨンレバースプリング
１のばね力の如何はピアノの演奏に大きく影響す
るので、これを微細に調整する必要があるが、従
来ではコイル部１ａとレピテイシヨンレバー４に
当接している上端部１ｂとの間の部分をワイヤベ
ンダーなどで曲げたり、伸ばしたりして調整して
おり、このような作業を間隔狭く多数並列された
アクシヨンごとに行うことは甚だ厄介で、不均一
になり易く、作業者の熟練を必要としている。 In this way, the spring force of the repetition lever spring 1 has a great influence on the performance of the piano, so it is necessary to finely adjust it. The adjustment is made by bending or stretching the part between the upper end 1b and the upper end 1b using a wire bender, etc., and it is extremely troublesome to perform such work for each of the many parallel actions with narrow intervals, and the unevenness may occur. It is easy to cause damage and requires the skill of the operator.
そこで、この考案は上記の欠点を改良すべくな
されたもので、レピテイシヨンレバーの前方位置
に下半部をやや小径の軸杆部としたねじ部材を上
方からその軸杆部を下側に突出させて螺合し、レ
ピテイシヨンレバースプリングの上端部には耐摩
耗性で潤滑性の合成樹脂材からなる環状のこまを
前後方向に摺動可能にかつ着脱可能に取付け、ま
た、このこまをねじ部材の軸杆部に回動可能にか
つ嵌め外し可能に嵌挿して、スプリングの強さを
容易に調節できるようにすると共に調整用こまの
取付けと交換が簡単にできる調整装置を提供する
ものである。 Therefore, this invention was made in order to improve the above-mentioned drawbacks.The screw member whose lower half is a shaft rod portion of a slightly smaller diameter is placed in the front position of the repetition lever. An annular top made of wear-resistant and lubricating synthetic resin is attached to the upper end of the repetition lever spring so that it can slide in the front and back direction and can be attached and removed. To provide an adjusting device which allows the strength of a spring to be easily adjusted by rotatably and removably fitting into the shaft part of a screw member, and also allows easy attachment and replacement of an adjusting piece. It is something.
第２図ないし第４図イ，ロはこの考案の一実施
例を示すものであり、ウイツペン２上のポスト３
に枢支されたレピテイシヨンレバー４の前方位置
すなわちポスト３への枢支部とジヤツク５の上端
挿入部との中間位置に下半部をやや小径の軸杆部
８ａとしたねじ部材８が上方から軸杆部８ａを下
側に突出させて螺合されており、一方ポスト３に
中央コイル部１ａが枢支されたレピテイシヨンレ
バースプリング１の上端部１ｂは後方に向つて水
平にＵ字状に折曲げられ、そこには弗素系樹脂ま
たはポリアセタール樹脂のように耐摩耗性と潤滑
性を備えた合成樹脂からなるみぞ形環状のこま９
が、みぞ部９ａにより嵌め外し自在に取付けら
れ、そのこま９は上記ねじ部材８の軸杆部８ａに
回動可能にそして嵌め外し可能に嵌挿され、その
上面はレピテイシヨンレバースプリング１のばね
力によつてねじ部材８のねじ部と軸杆部８ａとの
境界段部に当接している。 Figures 2 to 4 A and B show an embodiment of this invention, in which the post 3 on the Uitzpen 2 is
At the forward position of the repetition lever 4 which is pivoted to the post 3, that is, at the intermediate position between the pivot part to the post 3 and the upper end insertion part of the jack 5, there is a screw member 8 whose lower half is a shaft part 8a with a slightly smaller diameter. The upper end portion 1b of the repetition lever spring 1, with the central coil portion 1a pivotally supported on the post 3, extends horizontally in a U-shape toward the rear. A groove-shaped annular top 9 made of a synthetic resin with wear resistance and lubricity, such as fluorine resin or polyacetal resin, is bent into a shape.
is removably attached to the groove portion 9a, and the top 9 is rotatably and removably fitted into the shaft rod portion 8a of the screw member 8, and its upper surface is connected to the repetition lever spring 1. Due to the spring force, it is brought into contact with the boundary step between the threaded portion of the screw member 8 and the shaft portion 8a.
そこで、ドライバーなどの工具をねじ部材８の
頭部に係合させて、これをねじ込むように回動さ
せれば、こま９を介してレピテイシヨンレバース
プリング１の上端部１ｂが押下げられ、スプリン
グ１の曲り角度が狭められてそれだけばね力が強
まり、またねじ部材８を逆方向に回動させれば、
レピテイシヨンレバースプリング１の曲り角度が
広くなりそれだけばね力が緩和される。 Therefore, when a tool such as a screwdriver is engaged with the head of the screw member 8 and rotated to screw it in, the upper end 1b of the repetition lever spring 1 is pushed down via the top 9. If the bending angle of the spring 1 is narrowed, the spring force becomes stronger, and if the screw member 8 is rotated in the opposite direction,
The bending angle of the repetition lever spring 1 becomes wider, and the spring force is alleviated accordingly.
その際、こま９はねじ部材８の軸杆部８ａに回
動可能に嵌め込まれると共にスプリング上端部１
ｂに前後方向に摺動可能に取付けられているた
め、こま９は脱落することなく、また、各部材が
引つかかつたりせず、ばね力の調整が円滑に行わ
れる。 At this time, the top 9 is rotatably fitted into the shaft portion 8a of the screw member 8, and the spring upper end portion 1
Since the top 9 is attached so as to be slidable in the front-rear direction, the top 9 does not fall off, each member does not get stuck, and the spring force can be adjusted smoothly.
また、第５図および第６図イ，ロは他の実施例
を示すものであり、このもののこま９は上記のも
のと材質を同じくし、ねじ部材８の小径軸杆部８
ａに回動可能にそして嵌め外し可能に嵌挿される
が、一側に通孔の向きを直交させた耳片９a′を有
する環状体をなし、その耳片９a′を通孔を介して
レピテイシヨンレバースプリング１の直線状の上
端部１ｂに挿通することにより前後方向に摺動可
能にかつ着脱可能に取付けられており、スプリン
グ１のばね力の調整に当たつての機能は上述の例
と変りがない。 5 and 6A and 6B show other embodiments, in which the top 9 is made of the same material as the above-mentioned one, and the small diameter shaft portion 8 of the screw member 8 is
A is rotatably and removably fitted into the hole, and has an annular body having a lug 9a' on one side with the direction of the through hole orthogonal to the other. By inserting it into the linear upper end 1b of the stationary lever spring 1, it is slidably and detachably attached in the front and rear direction, and the function of adjusting the spring force of the spring 1 is as described in the above example. There is no difference.
以上のようにこの考案では、ねじ部材によつて
レピテイシヨンレバースプリングの強さを調整す
るようにしたので、その調整作業がやり易く微細
に行われ、そして、ねじ部材の下半部を小径の軸
杆部となし、この軸杆部に、レピテイシヨンレバ
ースプリングの上端部に前後方向に摺動可能にか
つ着脱可能に取付けた滑りのよい合成樹脂製のこ
まを回動可能にかつ嵌め外し自在に嵌挿し、その
上面を軸杆部とねじ部の境界段部に当接させたの
で、スプリング強さの調整作業を無理なく円滑に
行うことができ、また、ピアノの演奏時にもねじ
部材に対するレピテイシヨンレバースプリングの
相対移動が滑らかで雑音を生じる恐れなく、しか
も、ねじ部材は大径の頭部を上に小径の軸杆部を
下にしてレピテイシヨンレバーに取付けられるの
で、ピアノアクシヨンの組立後でも自由に取付け
ることができ、組立て易く、そして、こまが損傷
したり摩耗したりした際にはスプリングを下方へ
曲げながら軸杆部から外すことにより新しいもの
と簡単に交換することができる。 As described above, in this invention, the strength of the repetition lever spring is adjusted using the screw member, so the adjustment work can be done easily and finely, and the lower half of the screw member has a small diameter. A slippery synthetic resin top, which is detachably attached to the upper end of the repetition lever spring and slidable in the front-rear direction, is rotatably fitted into the shaft rod. Since it is removably inserted and its upper surface is in contact with the boundary step between the shaft rod and the threaded part, the spring strength can be adjusted easily and smoothly. The relative movement of the repetition lever spring with respect to the member is smooth and there is no risk of noise generation, and the screw member can be attached to the repetition lever with the large diameter head on top and the small diameter shaft part on the bottom. It can be installed freely even after the piano action has been assembled, making it easy to assemble, and when the top becomes damaged or worn, it can be easily replaced with a new one by bending the spring downward and removing it from the stem. can do.
第１図は従来のグランドピアノアクシヨンの側
面図。第２図はこの考案の一実施例の一部切断側
面図。第３図はねじ部材の側面図。第４図イはそ
のこまの側面図。同図ロはこまとスプリングの取
付状態を示す平面図。第５図は変更例の一部切断
側面図。第６図イはそのこまとスプリングの取付
状態を示す平面図。同図ロはその側面図。
図中、１……レピテイシヨンレバースプリン
グ、１ａ……コイル部、１ｂ……上端部、２……
ウイツペン、３……ポスト、４……レピテイシヨ
ンレバー、５……ジヤツク、６……ローラ、８…
…ねじ部材、８ａ……軸杆部、９，９′……こま、
９ａ……みぞ部、９a′……耳片。
Figure 1 is a side view of a conventional grand piano action. FIG. 2 is a partially cutaway side view of one embodiment of this invention. FIG. 3 is a side view of the screw member. Figure 4 A is a side view of the top. Figure B is a plan view showing the state in which the top and spring are attached. FIG. 5 is a partially cutaway side view of a modified example. FIG. 6A is a plan view showing how the top and spring are attached. Figure b is a side view. In the figure, 1... Repetition lever spring, 1a... Coil part, 1b... Upper end part, 2...
Witness pen, 3...post, 4...repetition lever, 5...jack, 6...roller, 8...
...screw member, 8a...shaft rod part, 9, 9'...top,
9a... groove, 9a'... ear piece.
Claims (1)
やや小径の軸杆部８ａとしたねじ部材８を上方か
らその軸杆部８ａを下側に突出させて螺合し、レ
ピテイシヨンレバースプリング１の上端部１ｂに
は耐摩耗性で潤滑性の合成樹脂材からなる環状の
こま９，９′を前後方向に摺動可能にかつ着脱可
能に取付け、また、該こま９，９′を上記ねじ部
材８の軸杆部８ａに回動可能にかつ嵌め外し可能
に嵌挿し、その上面を上記スプリング１のばね力
によつてねじ部材８のねじ部と軸杆部８ａの境界
段部に当接させてなるグランドピアノのレピテイ
シヨンレバースプリングの調整装置。 A screw member 8 whose lower half has a slightly small diameter shaft part 8a is screwed into the front position of the repetition lever 4 with the shaft part 8a protruding downward from above, and the repetition lever spring 1 Annular pieces 9, 9' made of a wear-resistant and lubricating synthetic resin material are attached to the upper end portion 1b so as to be slidable in the front-rear direction and detachable. It is rotatably and removably fitted into the shaft rod portion 8a of the member 8, and its upper surface is brought into contact with the boundary step between the threaded portion of the screw member 8 and the shaft rod portion 8a by the spring force of the spring 1. Grand piano repetition lever spring adjustment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2554382U JPS58131096U (en) | 1982-02-26 | 1982-02-26 | Repetition lever spring adjustment device for grand pianos |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2554382U JPS58131096U (en) | 1982-02-26 | 1982-02-26 | Repetition lever spring adjustment device for grand pianos |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58131096U JPS58131096U (en) | 1983-09-05 |
| JPS6321028Y2 true JPS6321028Y2 (en) | 1988-06-10 |
Family
ID=30037511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2554382U Granted JPS58131096U (en) | 1982-02-26 | 1982-02-26 | Repetition lever spring adjustment device for grand pianos |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58131096U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6464868B2 (en) * | 2015-03-25 | 2019-02-06 | ヤマハ株式会社 | Support assembly and keyboard device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4528925Y1 (en) * | 1970-01-14 | 1970-11-07 |
-
1982
- 1982-02-26 JP JP2554382U patent/JPS58131096U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4528925Y1 (en) * | 1970-01-14 | 1970-11-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58131096U (en) | 1983-09-05 |
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