JP2792371B2 - Musical instrument keyboard device - Google Patents
Musical instrument keyboard deviceInfo
- Publication number
- JP2792371B2 JP2792371B2 JP4321235A JP32123592A JP2792371B2 JP 2792371 B2 JP2792371 B2 JP 2792371B2 JP 4321235 A JP4321235 A JP 4321235A JP 32123592 A JP32123592 A JP 32123592A JP 2792371 B2 JP2792371 B2 JP 2792371B2
- Authority
- JP
- Japan
- Prior art keywords
- key
- fulcrum
- contact
- musical instrument
- keyboard device
- 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 - Fee Related
Links
Landscapes
- Electrophonic Musical Instruments (AREA)
Description
【0001】[0001]
【産業上の利用分野】この発明は電子ピアノ等の楽器の
鍵盤装置に関し、特に鍵の演奏時における摩擦及び雑音
を低減するように改良したものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard device for a musical instrument such as an electronic piano, and more particularly to an improved keyboard device for reducing friction and noise when playing keys.
【0002】[0002]
【従来の技術】従来における楽器の鍵盤装置として、特
公平1−28956号公報(以下、第1従来例とい
う。)及び特公昭45−8828号公報(以下、第2従
来例という。)にそれぞれ開示されているものがある。2. Description of the Related Art Japanese Patent Publication No. 1-28956 (hereinafter referred to as "first conventional example") and Japanese Patent Publication No. Sho 45-8828 (hereinafter referred to as "second conventional example") respectively show conventional keyboard devices for musical instruments. Some have been disclosed.
【0003】前者の第1従来例のものは、鍵の後端部下
面に設けた略L字状の係合突起を鍵支持部材に穿設した
係合孔に係合し、前記鍵を前記鍵支持部材に前記係合突
起と前記係合孔縁部との当接部を支点として上下方向に
回動自在に支持し、この支点部と案内部材とによって前
記鍵の左右方向及びローリング方向(鍵の前後方向に沿
う軸線を中心として回転する方向)の動きを抑制したも
のである。In the first conventional example, a substantially L-shaped engaging projection provided on the lower surface of a rear end portion of a key is engaged with an engaging hole formed in a key support member, and the key is engaged with the key. The key support member is rotatably supported in a vertical direction with a contact portion between the engagement protrusion and the edge of the engagement hole as a fulcrum, and the fulcrum portion and the guide member allow the key to move in the left-right direction and in the rolling direction ( (In the direction of rotation about an axis along the front-rear direction of the key).
【0004】また、後者の第2従来例のものは、鍵の後
端部と鍵支持部材とを左右方向(水平方向)に沿う1本
の接触線を有する線接触状態及び左右方向略中間部に1
つの接触点を有する点接触状態で接触させることによ
り、前記鍵を前記鍵支持部材に前記接触部を支点として
上下方向に回動自在に支持し、この支点部と案内部材と
によって前記鍵の左右方向及びローリング方向の動きを
抑制したものである。In the second prior art, the rear end of the key and the key support member are arranged in a line contact state having one contact line extending in the left-right direction (horizontal direction) and at a substantially middle portion in the left-right direction. 1 in
The key is contacted in a point contact state having two contact points, so that the key is rotatably supported on the key support member in the vertical direction with the contact portion as a fulcrum. The movement in the direction and the rolling direction is suppressed.
【0005】[0005]
【発明が解決しようとする課題】上述した第1従来例の
ものは、支点部で鍵の左右方向及びローリング方向の動
きを抑制すると共に、案内部材でも鍵の左右方向とロー
リング方向の動きを抑制している。このため、鍵自体の
そり・ねじれ、案内部材の傾斜・ねじれ或は係合突起の
ゆがみ等、構成部品の加工精度や取付精度にわずかな誤
差があっても、鍵が案内部材に曲げ力を作用させてしま
い、雑音を発生すると共に、鍵が円滑に動作せず、鍵の
タッチ感(操作感)が悪くなる。また、鍵の下面と係合
突起との間の寸法と、鍵支持部材の板厚寸法とが正確に
一致しないため、係合突起と係合孔との係合部に隙間が
生じて、がたつくことによって、雑音を発生する。The first prior art described above suppresses the movement of the key in the left-right direction and the rolling direction at the fulcrum, and the guide member also suppresses the movement of the key in the left-right direction and the rolling direction. doing. For this reason, even if there is a slight error in the processing accuracy or mounting accuracy of the component parts, such as warping or twisting of the key itself, inclination / twisting of the guide member, or distortion of the engagement protrusion, the key exerts a bending force on the guide member. This causes noise to be generated, the key does not operate smoothly, and the touch feeling (operating feeling) of the key deteriorates. In addition, since the dimension between the lower surface of the key and the engagement projection does not exactly match the thickness of the key support member, a gap is formed in the engagement portion between the engagement projection and the engagement hole, and the backlash is generated. This generates noise.
【0006】更に、第2従来例のものは、鍵の左右方向
へのずれを吸収し得るように構成されていないため、鍵
をずれたままセットすると、押鍵時にがたつきが生じた
部分において雑音を発生する。また、線接触部は左右方
向に沿う1本の接触線を有する線接触状態のため、鍵の
ローリング方向への動きを抑制するための案内部材が必
要であり、それだけ鍵の摩擦部が多くなり、鍵が円滑に
動作せず、鍵のタッチ感が悪くなる。Further, since the second conventional example is not configured to absorb the shift of the key in the left-right direction, if the key is set with the key shifted, a portion of the key which is loose when the key is pressed is generated. Generates noise. In addition, since the line contact portion is a line contact state having one contact line along the left and right direction, a guide member for suppressing the movement of the key in the rolling direction is necessary, and the friction portion of the key increases accordingly. However, the key does not operate smoothly and the touch feeling of the key deteriorates.
【0007】この発明は上記事情に鑑みてなされたもの
で、鍵の演奏時における鍵側支点部と鍵支持部材側支点
部との摩擦及び雑音を低減した楽器の鍵盤装置を提供す
ることを目的とするものである。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a keyboard device for a musical instrument in which friction and noise between a key-side fulcrum and a key-supporting member-side fulcrum during playing of a key are reduced. It is assumed that.
【0008】[0008]
【課題を解決するための手段】斯かる目的を達成するた
め請求項1記載の構成は、鍵支持部材に設けられた支点
部に鍵に設けられた支点部を押圧手段で押圧した状態で
互いに当接係合させ、これら両支点部の互いに当接した
部位を支点として前記鍵を上下方向に回動自在にすると
共に、前記鍵を鍵復帰手段により上方に回動付勢してな
る楽器の鍵盤装置において、前記両支点部のいずれか一
方の支点部を球面凸状とし且つ他方の支点部を開口端側
に向かうに従い漸次拡開する壁面を有する凹状とし、前
記両支点部の接触状態が前記球面凸状の同一円周上に複
数の接触点を有する点接触となる如く構成したことを特
徴とするものである。In order to achieve the above object, according to the first aspect of the present invention, a fulcrum provided on a key support member is pressed against a fulcrum provided on a key by pressing means. The key is rotatable up and down with the portions of these fulcrum portions in contact with each other as a fulcrum, and the key is urged upward by key return means. In the keyboard device, one of the fulcrum portions is formed into a spherical convex shape and the other fulcrum portion is formed into a concave shape having a wall surface that gradually expands toward the opening end, and the contact state between the two fulcrum portions is reduced. The present invention is characterized in that a point contact having a plurality of contact points on the same circumference of the spherical convex shape is provided.
【0009】また、同じく請求項2記載の構成は、鍵支
持部材に設けられた支点部に鍵に設けられた支点部を押
圧手段で押圧した状態で互いに当接係合させ、これら両
支点部の互いに当接した部位を支点として前記鍵を上下
方向に回動自在にすると共に、前記鍵を鍵復帰手段によ
り上方に回動付勢してなる楽器の鍵盤装置において、前
記両支点部のいずれか一方の支点部を球面凸状とし且つ
他方の支点部の先端を前記球面凸状の同一円周上に複数
の接触点をもって点接触する部位を有する形状としたこ
とを特徴とするものである。また、同じく請求項3記載
の構成は、鍵支持部材に設けられた支点部に鍵に設けら
れた支点部を押圧手段で押圧した状態で互いに当接係合
させ、これら両支点部の互いに当接した部位を支点とし
て前記鍵を上下方向に回動自在にすると共に、前記鍵を
鍵復帰手段により上方に回動付勢してなる楽器の鍵盤装
置において、前記両支点部のいずれか一方の支点部の少
なくとも一部を球面凸状とし且つ他方の支点部の先端を
前記球面凸状の同一円周上に接触点をもって点接触する
部位を有する形状としたことを特徴とするものである。 Further, according to the second aspect of the present invention, the fulcrum provided on the key is pressed against the fulcrum provided on the key support member by the pressing means so as to abut and engage with each other. In the keyboard device of a musical instrument in which the key is rotatable in the up and down direction with the parts abutting on each other as a fulcrum and the key is urged upward by key return means, One of the fulcrum portions is formed into a spherical convex shape, and the tip of the other fulcrum portion is formed into a shape having a portion that makes a point contact with a plurality of contact points on the same circumference of the spherical convex shape. . In addition, the same applies to claim 3.
The configuration of the key is provided on the fulcrum provided on the key support member.
Abut on each other with the fulcrum parts pressed by the pressing means.
And these two fulcrum parts contact each other as fulcrum.
To allow the key to rotate freely in the vertical direction,
Keyboard arrangement of musical instrument that is biased upward by key return means
At least one of the fulcrum portions
At least a part shall be spherically convex and the tip of the other fulcrum shall be
Point contact with the contact point on the same circumference of the spherical convex shape
It is characterized by having a shape having a portion.
【0010】[0010]
【作用】請求項1記載の楽器の鍵盤装置は、鍵支持部材
側の支点部及び鍵側の支点部のいずれか一方の支点部が
球面凸状で、他方の支点部が開口端側に向かうに従い漸
次拡開する壁面を有する凹状であるから、前記両支点部
の接触状態が前記球面凸状の同一円周上に複数の接触点
を有する点接触となる。このため鍵は鍵盤として使用す
る動きの範囲で上下、左右及びロ−リング方向にそれぞ
れ動くことができる。According to the first aspect of the present invention, one of the fulcrum portion on the key support member side and the fulcrum portion on the key side has a spherical convex shape, and the other fulcrum portion faces the open end side. Therefore, the contact state between the two fulcrum portions is a point contact having a plurality of contact points on the same circumference of the spherical convex shape. For this reason, the key can move up and down, left and right, and rolling directions within the range of movement used as a keyboard.
【0011】[0011]
【実施例】以下、本発明の実施例を図面に基づき説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【0012】(第1実施例)図1は本発明の第1実施例
に係る楽器の鍵盤装置の要部縦断面図であり、同図中、
1は金属板等からなる鍵盤フレ−ムで、その上面には多
数の鍵(白鍵と黒鍵)が互いに平行に並べた状態で配設
されるが、図1においては1つの鍵(白鍵)2のみが図
示されている。この鍵2は合成樹脂製で、下面が開口す
る断面略コ字状をなしている。(First Embodiment) FIG. 1 is a longitudinal sectional view of a main part of a musical instrument keyboard apparatus according to a first embodiment of the present invention.
Reference numeral 1 denotes a keyboard frame made of a metal plate or the like, on the upper surface of which a number of keys (white keys and black keys) are arranged in parallel with each other, but in FIG. Only key 2 is shown. The key 2 is made of synthetic resin and has a substantially U-shaped cross section with an open lower surface.
【0013】鍵盤フレ−ム1の後端縁には垂直上方に向
けて後端壁3が折曲形成されている。鍵盤フレ−ム1の
前端縁には垂直下方に向けて前端壁4が折曲形成されて
いる。この前端壁4の下端縁には水平前方に向けて水平
壁5が折曲形成されている。この水平壁5の前端縁には
垂直上方に向けて前端壁4の高さの略1/4程度の高さ
に設定された前縁壁6が折曲形成されている。A rear end wall 3 is formed at the rear end edge of the keyboard frame 1 so as to be bent vertically upward. A front end wall 4 is formed at the front end of the keyboard frame 1 so as to be bent vertically downward. A horizontal wall 5 is bent at the lower edge of the front end wall 4 toward the horizontal front. At the front end of the horizontal wall 5, a front edge wall 6, which is set to be approximately 1 / of the height of the front end wall 4 vertically upward, is bent.
【0014】鍵盤フレ−ム1の後端側上面には鍵支持部
材7が設けられている。この鍵支持部材7は、断面長方
形の細長杆状をなしており、その後面を後端壁3の前面
に密着させた状態にして鍵盤フレ−ム1の上面にセット
し、図示しないボルトにより鍵盤フレ−ム1に固定され
ている。A key support member 7 is provided on the rear upper surface of the keyboard frame 1. The key support member 7 has an elongated rod shape having a rectangular cross section, and is set on the upper surface of the keyboard frame 1 with its rear surface in close contact with the front surface of the rear end wall 3, and is set on the keyboard by bolts (not shown). Frame 1 is fixed.
【0015】鍵支持部材7の内部には、その前面におい
て開口する凹状の支点部8が長手方向に間隔を存して鍵
2と対応する数だけ(図1においては1個のみ図示)設
けられている。この鍵支持部材7側の支点部(以下、凹
状支点部という。)8は、図2、図5〜図8に示す如く
左、右側面部9,10を有し、これら左、右側面部9,
10相互間が開口端側に向かうに従い漸次拡開する如く
傾斜して、くさび効果が得られるようになっている。Inside the key support member 7, concave fulcrum portions 8 opening at the front surface thereof are provided in a number corresponding to the number of the keys 2 at intervals in the longitudinal direction (only one is shown in FIG. 1). ing. The fulcrum portion (hereinafter referred to as a concave fulcrum portion) 8 on the key support member 7 side has left and right side portions 9 and 10 as shown in FIGS.
The wedge effect is obtained by inclining so as to gradually expand as the spaces between the ten sides are closer to the opening end side.
【0016】凹状支点部8は、正面形状が図5に示す如
く上下方向に沿う長軸を有する略楕円形、平面形状が図
6に示す如く略三角形、側面形状が図7に示す如く略半
円形、図6の矢印F方向から見た形状が図8に示す如く
略楕円形となっている。このような構成の凹状支点部8
の左、右側面9,10に、図2〜図4に示す如く鍵2の
後端部に一体形成された球面よりなる凸状の支点部(以
下、凸状支点部という。)11が当接する。The concave fulcrum portion 8 has a substantially elliptical shape having a long axis along the vertical direction as shown in FIG. 5, a substantially triangular shape as shown in FIG. 6, and a substantially half shape as shown in FIG. A circular shape as viewed from the direction of arrow F in FIG. 6 is substantially elliptical as shown in FIG. The concave fulcrum portion 8 having such a configuration
2 and 4, a convex fulcrum (hereinafter referred to as a convex fulcrum) 11 composed of a spherical surface and integrally formed on the rear end of the key 2 as shown in FIGS. Touch
【0017】凹状支点部8の左、右側面9,10と凸状
支点部11との接触状態は、図2及び図4に示す如く鍵
2の長手方向軸線と直交する軸線L上に位置し且つ球面
凸状の同一円周上に2つの接触点12を有する点接触と
なっており、その両接触点12,12は互いに対向して
いる。The contact state between the left and right side surfaces 9 and 10 of the concave fulcrum 8 and the convex fulcrum 11 is located on an axis L orthogonal to the longitudinal axis of the key 2 as shown in FIGS. In addition, it is a point contact having two contact points 12 on the same circumference of a spherical convex shape, and the two contact points 12 are opposed to each other.
【0018】鍵2は、凹状支点部8の左、右側面9,1
0と、凸状支点部11との当接部位、即ち接触点12を
支点として上下方向(図3中、矢印Y方向)、左右方向
(図3中、矢印X方向)及びロ−リング方向(図3中、
矢印R方向)にそれぞれ鍵盤として使用する動きの範囲
で微小角度回動自在になっている。The key 2 is provided on the left and right side surfaces 9 and 1 of the concave fulcrum 8.
0, the contact point between the convex fulcrum 11, that is, the contact point 12, as a fulcrum, the vertical direction (arrow Y direction in FIG. 3), the horizontal direction (arrow X direction in FIG. 3), and the rolling direction ( In FIG.
In the range of movement to be used as a keyboard in the direction of arrow R), it is rotatable by a small angle.
【0019】鍵2は、板ばね(鍵復帰手段及び押圧手
段)14により上方向に回動付勢されていると共に、凸
状支点部11が凹状支点部8の左、右側面9,10に圧
接する方向(図4中、矢印Z方向)に押圧されている。
板ばね14は、図1に示す如く前端部が鍵盤フレ−ム1
の上面に設けられたばね受部材15に且つ後端部が鍵2
の後端側凹部内面に設けられたばね受部材16にそれぞ
れ係止されている。The key 2 is urged upward by a leaf spring (key return means and pressing means) 14 and has a convex fulcrum 11 on the left and right side surfaces 9 and 10 of the concave fulcrum 8. It is pressed in the pressing direction (the arrow Z direction in FIG. 4).
The leaf spring 14 has a keyboard frame 1 at the front end as shown in FIG.
The spring receiving member 15 provided on the upper surface of the
Are fixed to spring receiving members 16 provided on the inner surface of the rear end side concave portion, respectively.
【0020】鍵2の前端側の一側壁下端縁部には、略L
字状のストッパア−ム17が一体に突設されており、こ
のストッパア−ム17の垂直片部17aは、前端壁4の
前面と離間対向している。また、ストッパア−ム17の
水平片部17bは、前端壁4にその長手方向に間隔を存
して複数個(図1においては1個のみ図示)突設された
上下方向に細長いガイド孔18内を移動自在に挿通され
て、鍵盤フレ−ム1の下面側に延出されている。The lower end of one side wall of the front end of the key 2 is substantially L-shaped.
A stopper arm 17 in the shape of a letter is integrally provided to project, and the vertical piece 17a of the stopper arm 17 faces the front surface of the front end wall 4 at a distance. The horizontal piece 17b of the stopper arm 17 has a plurality of (only one is shown in FIG. 1) protrudingly provided in the front end wall 4 with a space therebetween in the longitudinal direction, and a vertically elongated guide hole 18 is provided. Is movably inserted and extends to the lower surface side of the keyboard frame 1.
【0021】各ガイド孔18の幅(左右方向の寸法)
は、ストッパア−ム17の板厚の2〜3倍に設定されて
いる。従って、互いに隣接する2つの鍵2のストッパア
−ム17の水平片部17bが1つのガイド孔18内に挿
通される。ストッパア−ム17の水平片部17bの上端
縁部は、鍵盤フレ−ム1の前端縁部下面に添装固定され
たフェルト等よりなる上限ストッパ19に当接すること
により、鍵2の上限位置が規制される。またストッパア
−ム17の水平片部17bの下端縁部は、水平壁5の上
面に添装固定されたフェルト等よりなる下限ストッパ2
0に当接するこより、鍵2の下限位置が規制される。Width of each guide hole 18 (size in the left-right direction)
Is set to be two to three times the thickness of the stopper arm 17. Therefore, the horizontal pieces 17b of the stopper arms 17 of the two keys 2 adjacent to each other are inserted into one guide hole 18. The upper end edge of the horizontal piece 17b of the stopper arm 17 contacts the upper limit stopper 19 made of felt or the like attached to the lower surface of the front edge of the keyboard frame 1 so that the upper limit position of the key 2 can be adjusted. Be regulated. The lower end edge of the horizontal piece 17b of the stopper arm 17 has a lower limit stopper 2 made of felt or the like attached and fixed to the upper surface of the horizontal wall 5.
By touching 0, the lower limit position of the key 2 is regulated.
【0022】鍵2の凹部内面にはスイッチ押圧部材(ア
クチュエータ)21が一体に突設されている。このスイ
ッチ押圧部材21の下端部は、鍵盤フレ−ム1に突設さ
れた挿通孔22内を移動自在に挿通されて、鍵スイッチ
アッセンブリ23の内方に延出している。そして、鍵2
を板ばね14の付勢力に抗して下方に押圧すると、スイ
ッチ押圧部材21によって鍵スイッチアッセンブリ23
のスイッチ部(図示省略)が押圧されて閉成することに
より、発音制御回路(図示省略)が駆動し、当該押圧し
た鍵2に対応する音階の音を発生するものである。A switch pressing member (actuator) 21 is integrally protruded from the inner surface of the concave portion of the key 2. The lower end of the switch pressing member 21 is movably inserted through an insertion hole 22 protruding from the keyboard frame 1 and extends inside the key switch assembly 23. And key 2
Is pressed downward against the urging force of the leaf spring 14, the switch pressing member 21 causes the key switch assembly 23 to be pressed.
When a switch (not shown) is pressed and closed, a sound control circuit (not shown) is driven to generate a sound of a scale corresponding to the pressed key 2.
【0023】鍵スイッチアッセンブリ23は、鍵盤フレ
−ム1の下面に配設されている。また、鍵盤フレ−ム1
の前端縁側上面には、鍵2と対応する数の案内部材24
が突設されている。この案内部材24は、鍵2の凹部内
に嵌合されて該鍵2の上下方向の動きを案内すると共に
鍵2の左右方向及びロ−リング方向の動きを規制するも
のである。The key switch assembly 23 is disposed on the lower surface of the keyboard frame 1. In addition, keyboard frame 1
Of guide members 24 corresponding to the number of keys 2
Is protruding. The guide member 24 is fitted into the concave portion of the key 2 to guide the vertical movement of the key 2 and to restrict the horizontal and rolling movements of the key 2.
【0024】以上の構成において、凹状支点部8の左、
右側面9,10と凸状支点部11との接触状態が球面凸
状の同一円周上に2つの接触点12を有する点接触であ
るから、鍵2は鍵盤として使用する動きの範囲で接触点
12を支点に上下、左右及びロ−リング方向にそれぞれ
微小角度回動することができる。この場合、特に鍵2の
主たる動きの方向である上下方向に対する摩擦が小さ
い。In the above configuration, the left of the concave fulcrum 8
Since the contact state between the right side surfaces 9, 10 and the convex fulcrum portion 11 is a point contact having two contact points 12 on the same circumference of a spherical convex shape, the key 2 contacts within the range of movement used as a keyboard. With the point 12 as a fulcrum, it can be turned by a small angle in the vertical and horizontal directions and the rolling direction. In this case, the friction in the vertical direction, which is the main movement direction of the key 2, is particularly small.
【0025】従って、鍵2側の凸状支点部11と鍵支持
部材7側の凹状支点部8とは、左右対称位置にある接触
点12で接触しているだけで、鍵2の鍵盤として使用す
る動きの範囲で上下、左右及びロ−リング方向への動き
を許容しているから、摩擦部が少なくなって鍵2の動き
が円滑になり、鍵2のタッチ感が良好となると共に、雑
音を発生しない。Therefore, the convex fulcrum portion 11 on the key 2 side and the concave fulcrum portion 8 on the key support member 7 contact only at the contact point 12 which is symmetrical to the left and right, and are used as a keyboard for the key 2. The movement in the up, down, left, right, and rolling directions is permitted within the range of the movement of the key 2, so that the friction portion is reduced, the movement of the key 2 is smooth, the touch feeling of the key 2 is improved, and the noise is improved. Does not occur.
【0026】また、凹状支点部8の左、右側面9,10
は、その相互間が開口端側に向かうに従い漸次拡開する
如く傾斜し、しかも板ばね14により凸状支点部11が
凹状支点部8の左、右側面9,10に押圧されているこ
とによるくさび効果で、両支点部8,11相互間に隙間
が発生しないため、がたつくことがなく、雑音を発生し
ないと共に、自動調芯される。The left and right side surfaces 9 and 10 of the concave fulcrum 8
This is due to the fact that the fulcrum 11 is inclined so that it gradually expands toward the opening end, and the convex fulcrum 11 is pressed against the left and right side surfaces 9 and 10 of the concave fulcrum 8 by the leaf spring 14. Due to the wedge effect, no gap is generated between the two fulcrum portions 8 and 11, so that there is no play, no noise is generated, and automatic alignment is performed.
【0027】なお、案内部材24と鍵内壁とに間隙を設
けるか、案内部材24の周囲をエラストマ等の弾性体で
包むようにすれば鍵支点自体は鍵2の左右方向への動き
を抑制していないので、ガタツキのない横揺れ鍵盤が実
現できる。これによって鍵2を左右方向に微妙に動かす
と、ビブラ−ト、トレモロ、バン、リヴァ−ブ等の変調
効果を得る演奏を可能とした鍵盤への適用が容易とな
る。この場合は、案内部材24の、鍵2の両側壁内面に
当接する部位に、横揺れセンサとして、ポリエステルフ
ィルムをベ−スにした銀電極と感圧フィルムとからなる
感圧センサを貼着し、適宜厚みの弾性シートを巻着すれ
ばよい。感圧センサは感圧ゴムであっても良い。If a gap is provided between the guide member 24 and the inner wall of the key or if the periphery of the guide member 24 is wrapped with an elastic body such as an elastomer, the key fulcrum itself suppresses the movement of the key 2 in the left-right direction. Since there is no key, a rolling keyboard without rattling can be realized. Thus, when the key 2 is delicately moved in the left-right direction, it is easy to apply the present invention to a keyboard capable of performing a modulation effect such as vibrato, tremolo, van, and reverb. In this case, a pressure-sensitive sensor composed of a silver electrode based on a polyester film and a pressure-sensitive film is attached as a roll sensor to a portion of the guide member 24 that comes into contact with the inner surface of each side wall of the key 2. What is necessary is just to wind an elastic sheet of an appropriate thickness. The pressure sensor may be pressure sensitive rubber.
【0028】また、凹状支点部8の形状としては、図6
中、G部分が直線、或は放物線、楕円の一部等の曲線、
図5及び図8中、H部分が放物線、円、楕円、双曲線等
の曲線、図7中、J部分が放物線等の曲線による組み合
わせの3次曲面を有する形状であればよい。The shape of the concave fulcrum 8 is shown in FIG.
Medium, G part is a straight line, or a curve such as a parabola or a part of an ellipse,
5 and 8, the H portion may have a shape having a cubic surface formed by a combination of curves such as a parabola, a circle, an ellipse, and a hyperbola, and the J portion in FIG.
【0029】なお、鍵復帰手段として、専用のスプリン
グ又は重りを設けても良い。Incidentally, a dedicated spring or weight may be provided as the key return means.
【0030】[第2実施例]次に本発明の第2実施例を
図9に基づき説明する。なお、本実施例において上述し
た第1実施例と同一部分については、図面に同一符号を
付して説明する。[Second Embodiment] Next, a second embodiment of the present invention will be described with reference to FIG. In the present embodiment, the same parts as those in the first embodiment described above will be described by attaching the same reference numerals to the drawings.
【0031】図9は本発明の第2実施例に係る楽器の鍵
盤装置における凹状支点部と凸状支点部の非係合状態を
示す傾斜図である。本実施例において第1実施例と異な
る点は、鍵2の後端面に第1実施例と同様の凹状支点部
8を設けると共に、鍵支持部材7の前面に第1実施例と
同様の球面凸状支点部11を設けたことである。FIG. 9 is a perspective view showing a state in which the concave fulcrum and the convex fulcrum are not engaged in the keyboard device of the musical instrument according to the second embodiment of the present invention. The present embodiment is different from the first embodiment in that a concave fulcrum 8 similar to that of the first embodiment is provided on the rear end face of the key 2 and a spherical projection similar to that of the first embodiment is provided on the front surface of the key support member 7. The fulcrum portion 11 is provided.
【0032】なお、本実施例におけるその他の構成及び
作用効果は、上述した第1実施例と同一であるから、そ
の説明を省略する。The other configuration, operation, and effect of the present embodiment are the same as those of the first embodiment, and therefore the description thereof is omitted.
【0033】[第3実施例]次に本発明の第3実施例を
図10に基づき説明する。なお、本実施例において上述
した第1実施例と同一部分については、図面に同一符号
を付して説明する。[Third Embodiment] Next, a third embodiment of the present invention will be described with reference to FIG. In the present embodiment, the same parts as those in the first embodiment described above will be described by attaching the same reference numerals to the drawings.
【0034】図10は本発明の第3実施例に係る楽器の
鍵盤装置における凹状支点部と凸状支点部の係合状態を
示す斜視図である。本実施例において第1実施例と異な
る点は、次の事項である。即ち、第1実施例における鍵
支持部材7の前面が上側を向くようにして該鍵支持部材
7を鍵盤フレ−ム1の後端側上面に取り付け、該鍵支持
部材7の上面に第1実施例と同様の凹状支点部8を設け
る。また、鍵2の後端側下面に第1実施例と同様の球面
凸状11を設ける。また、第1のコイルばねよりなる鍵
復帰手段14により鍵2を上方に回動付勢すると共に、
第2のコイルばねよりなる押圧手段25により鍵2の後
端側下面を、球面凸状支点部11が凹状支点部8に圧接
する方向(図中、矢印Z方向)に押圧する。FIG. 10 is a perspective view showing the engaged state of the concave fulcrum and the convex fulcrum in the keyboard device of the musical instrument according to the third embodiment of the present invention. This embodiment is different from the first embodiment in the following points. That is, the key support member 7 in the first embodiment is mounted on the rear end upper surface of the keyboard frame 1 so that the front surface of the key support member 7 faces upward, and the first embodiment is mounted on the upper surface of the key support member 7. A concave fulcrum 8 similar to the example is provided. Further, a spherical convex 11 similar to that of the first embodiment is provided on the lower surface on the rear end side of the key 2. Further, the key 2 is urged upward by the key return means 14 comprising a first coil spring,
The lower surface on the rear end side of the key 2 is pressed by a pressing means 25 composed of a second coil spring in a direction in which the spherical convex fulcrum portion 11 comes into pressure contact with the concave fulcrum portion 8 (the arrow Z direction in the figure).
【0035】なお、本実施例におけるその他の構成及び
作用効果は、上述した第1実施例と同一であるから、そ
の説明を省略する。The other constructions, functions and effects of this embodiment are the same as those of the above-described first embodiment, and the description thereof will be omitted.
【0036】[第4実施例]次に本発明の第4実施例を
図11に基づき説明する。なお、本実施例において上述
した第1実施例と同一部分については、図面に同一符号
を付して説明する。[Fourth Embodiment] Next, a fourth embodiment of the present invention will be described with reference to FIG. In the present embodiment, the same parts as those in the first embodiment described above will be described by attaching the same reference numerals to the drawings.
【0037】図11は本発明の第4実施例に係る楽器の
鍵盤装置における凹状支点部と凸状支点部の係合状態を
示す斜視図である。本実施例において第1実施例と異な
る点は、鍵支持部材7の凹状支点部8を略半球面にする
と共に、鍵2の凸状支点部11を両端面が球状凸面とさ
れた断面円形状の短軸杆体にて構成したことである。こ
の凸状支点部11は、その軸線を鍵2の長手方向軸線と
直交する方向に向けて、その略中間部が鍵2の後端面に
固定されている。凸状支点部11は、その軸線を水平に
向けて、その両端面中央部が凹状支点部8の内壁面にそ
れぞれ1点で接触している。そして、これらの接触点1
2を支点として鍵2が、鍵盤として使用する動きの範囲
で上下、左右及びロ−リング方向に微小角度回動する。FIG. 11 is a perspective view showing an engagement state between a concave fulcrum and a convex fulcrum in a keyboard device for a musical instrument according to a fourth embodiment of the present invention. This embodiment is different from the first embodiment in that the concave fulcrum portion 8 of the key support member 7 has a substantially hemispherical surface and the convex fulcrum portion 11 of the key 2 has a circular cross section in which both end surfaces are spherical convex surfaces. Of the short-axis rod. The convex fulcrum portion 11 has its axis oriented in a direction orthogonal to the longitudinal axis of the key 2, and a substantially intermediate portion thereof is fixed to the rear end face of the key 2. The convex fulcrum 11 has its axis oriented horizontally, and the center of both end surfaces thereof is in contact with the inner wall surface of the concave fulcrum 8 at one point. And these contact points 1
With the fulcrum 2 as a fulcrum, the key 2 is rotated by a small angle in the vertical and horizontal directions and the rolling direction within the range of movement used as a keyboard.
【0038】なお、本実施例におけるその他の構成及び
作用効果は、上述した第1実施例と同一であるから、そ
の説明を省略する[第5実施例]次に本発明の第5実施
例を図12〜図15に基づき説明する。なお、本実施例
において上述した第1実施例と同一部分には、図面に同
一符号を付して説明する。The other structure, operation, and effect of this embodiment are the same as those of the first embodiment, and the description thereof is omitted. [Fifth Embodiment] Next, the fifth embodiment of the present invention will be described. This will be described with reference to FIGS. In the present embodiment, the same parts as those in the first embodiment described above will be described by attaching the same reference numerals to the drawings.
【0039】図12は本発明の第5実施例に係る楽器の
鍵盤装置の要部縦断面図である。本実施例において第1
実施例と異なる点は、凹状支点部8を正三角錐形状と
し、この凹状支点部8と球面凸状支点部11とが図15
に示す如く3つの接触点12で接触するようにしたこと
である。そして、鍵2は、鍵盤として使用する動きの範
囲で3つの接触点12を支点として、図14に示す如く
上下、左右及びロ−リング方向にそれぞれ微小角度回動
する。FIG. 12 is a longitudinal sectional view of a main part of a keyboard device for a musical instrument according to a fifth embodiment of the present invention. In this embodiment, the first
The difference from the embodiment is that the concave fulcrum 8 has a regular triangular pyramid shape, and the concave fulcrum 8 and the spherical convex fulcrum 11 are shown in FIG.
As shown in FIG. 3, the contact is made at three contact points 12. Then, the key 2 is rotated by a small angle in up, down, left, right, and rolling directions with the three contact points 12 as fulcrums in the range of movement used as a keyboard, as shown in FIG.
【0040】なお、本実施例における支点部回り以外の
構成は、上述した第1実施例と同一であるから図面に同
一符号を付してその説明を省略するが、本実施例の支点
構造の作用効果は、第1実施例と少し異なる。即ち第1
実施例の支点部における摩擦は極めて小さいが、本実施
例にあっては、これと同等かわずかに大きい安定した摩
擦を有する。The structure other than the vicinity of the fulcrum in this embodiment is the same as that of the first embodiment described above. The operation and effect are slightly different from those of the first embodiment. That is, the first
Although the friction at the fulcrum portion of the embodiment is extremely small, the present embodiment has a stable friction equal to or slightly larger than this.
【0041】この小さく安定した摩擦によって鍵の行き
帰り(押離鍵)で指に受ける反力に差を持たせる(鍵の
ストローク−反力特性にヒステリシスを持たせる)こと
ができ、押し込む時の手ごたえを与えつつ、押し込んだ
状態の保持がしやすい鍵盤になる。このことにより残っ
た指で別の鍵盤を押し込む方へ神経が集中できる。この
ように意図的にヒステリシスを設けたい場合に上記のわ
ずかな、しかも安定した摩擦力をグリスなどを使わない
で実現するのに、支点もしくは支点近傍(3点の場合は
真の支点位置からわずかにずれている)に摺動機構を設
けるのが好都合となる。By this small and stable friction, a difference can be made in the reaction force received by the finger when the key goes back and forth (key press and release) (hysteresis is given to the stroke-reaction characteristic of the key), and the response when the key is pressed down It is a keyboard that is easy to hold in the pressed state while giving the key. This allows the nerve to concentrate on pushing another key with the remaining finger. In order to achieve the above-mentioned slight and stable frictional force without using grease when intentionally providing hysteresis in this way, a fulcrum or near a fulcrum (in the case of three points, a slight distance from the true fulcrum position) It is convenient to provide a sliding mechanism at the position.
【0042】[第6実施例]次に本発明の第6実施例を
図16に基づき説明する。本実施例は上述した第5実施
例と同様の正三角錐形状の凹状支点部8を鍵2の後端部
に、球面凸状支点部11を鍵支持部材7に設けたもの
で、その他の構成及び作用効果は、第5実施例と同一で
あるから、その説明を省略する。Sixth Embodiment Next, a sixth embodiment of the present invention will be described with reference to FIG. In the present embodiment, a concave fulcrum 8 of a regular triangular pyramid shape is provided at the rear end of the key 2 and a spherical convex fulcrum 11 is provided on the key support member 7 as in the fifth embodiment described above. The functions and effects are the same as those of the fifth embodiment, and the description thereof is omitted.
【0043】[第7実施例]次に本発明の第7実施例を
図17及び図18に基づき説明する。本実施例は、鍵支
持部材7の凹状支点部8を、鍵支持部材7の前後面にお
いて開口し且つ前面側から後面側に従い漸次拡開する壁
面を有するテ−パ状の貫通孔とする。そして、鍵2の後
端部の球面凸状支点部11を、凹状支点部8内にその後
面開口部側から嵌合し、鍵2を鍵復帰バネ14の押圧手
段により図17中、矢印Z方向に押圧したものである。Seventh Embodiment Next, a seventh embodiment of the present invention will be described with reference to FIGS. In this embodiment, the concave fulcrum portion 8 of the key support member 7 is a tapered through hole having a wall surface which is open at the front and rear surfaces of the key support member 7 and gradually expands from the front side to the rear side. Then, the spherical convex fulcrum 11 at the rear end of the key 2 is fitted into the concave fulcrum 8 from the rear opening side, and the key 2 is pressed by the pressing means of the key return spring 14 in FIG. Direction.
【0044】本実施例においても、鍵2は、鍵盤として
使用する動きの範囲で、複数の接触点12を支点に、上
下、左右及びロ−リング方向に微小角度でそれぞれ回動
する。Also in this embodiment, the key 2 is rotated by a small angle in the vertical and horizontal directions and the rolling direction around the plurality of contact points 12 within the range of movement used as a keyboard.
【0045】なお、本実施例におけるその他の構成及び
作用効果は上述した第1もしくは第5実施例と同一であ
るから、その説明を省略する。The other configuration, operation and effect of this embodiment are the same as those of the above-described first or fifth embodiment, and the description thereof will be omitted.
【0046】[第8実施例]次に本発明の第8実施例を
図19に基づき説明する。本実施例は、図示しない鍵支
持部材に設けた凹状支点部8を内端側に向かうに従い小
径となる壁面を有する略円錐形状(略すり鉢形状)と
し、鍵2に設けた凸状支点部11を球面凸状としたもの
である。[Eighth Embodiment] Next, an eighth embodiment of the present invention will be described with reference to FIG. In the present embodiment, a concave fulcrum 8 provided on a key support member (not shown) is formed into a substantially conical shape (substantially mortar shape) having a wall surface whose diameter becomes smaller toward the inner end side, and a convex fulcrum 11 provided on the key 2. Are spherically convex.
【0047】そして、凹状支点部8に凸状支点部11を
図示しない押圧手段により図中、矢印Z方向に押圧した
状態で当接させることにより、その接触部が凸状支点部
11の同一円周上に多数の接触点12を有する点接触状
態となり、これらの接触点12を支点に鍵2が、鍵盤と
して使用する動きの範囲で上下、左右及びロ−リング方
向に微小角度でそれぞれ回動する。The convex fulcrum portion 11 is brought into contact with the concave fulcrum portion 8 by being pressed in a direction indicated by an arrow Z in the drawing by a pressing means (not shown) so that the contact portion has the same circle as the convex fulcrum portion 11. A point contact state having a large number of contact points 12 on the circumference is established, and the key 2 is rotated around the contact points 12 at minute angles in the vertical, horizontal, and rolling directions within the range of movement used as a keyboard. I do.
【0048】なお、本実施例におけるその他の構成及び
作用効果は、上述した第1もしくは第5実施例と同一で
あるから、その説明を省略する。The other structure, operation, and effect of this embodiment are the same as those of the above-described first or fifth embodiment, and the description thereof will be omitted.
【0049】[第9実施例]次に本発明の第9実施例を
図20に基づき説明する。本実施例は、鍵2に設けた凸
状支点部11を球面凸状とし、図示しない鍵支持部材に
設けた凹状支点部8を前記球面の最大径より小さな内径
の円筒面とし、鍵2側の凸状支点部11を図示しない押
圧手段により図中、矢印Z方向に押圧して鍵支持部材側
の凹状支点部8に係合した時、該凹状支点部8の円筒面
の先端縁8aが、鍵2側の凸状支点部11の球面凸状の
同一円周上に複数の接触点12をもって点接触する。[Ninth Embodiment] Next, a ninth embodiment of the present invention will be described with reference to FIG. In the present embodiment, the convex fulcrum portion 11 provided on the key 2 has a spherical convex shape, and the concave fulcrum portion 8 provided on a key support member (not shown) has a cylindrical surface having an inner diameter smaller than the maximum diameter of the spherical surface. When the convex fulcrum 11 is pressed in the direction of arrow Z in the figure by a pressing means (not shown) to engage with the concave fulcrum 8 on the key support member side, the leading edge 8a of the cylindrical surface of the concave fulcrum 8 becomes A plurality of contact points 12 are point-contacted on the same spherical convex circumference of the convex fulcrum portion 11 on the key 2 side.
【0050】そして、鍵2は、鍵盤として使用する動き
の範囲で複数の接触点12を支点として上下、左右及び
ロ−リング方向にそれぞれ回動する。The key 2 rotates in the vertical and horizontal directions and the rolling direction with the plurality of contact points 12 as fulcrums within the range of movement used as a keyboard.
【0051】なお、本実施例におけるその他の構成及び
作用効果は、上述した第1もしくは第5実施例と同一で
あるから、その説明を省略する。The other structure, operation, and effect of this embodiment are the same as those of the first or fifth embodiment, and the description thereof is omitted.
【0052】[第10実施例]次に本発明の第10実施
例を図21に基づき説明する。本実施例は、鍵2に設け
た凸状支点部11を球面凸状とし、図示しない鍵支持部
材に設けた支点部26を、複数本(たとえば3本)の棒
状部材27を周方向に等間隔を存して配設して構成す
る。そして、各棒状部材27の先端部の半球面凸状部2
7aに、鍵2側の凸状支点部11を図示しない押圧手段
により図中、矢印Z方向に押圧した状態で当接させるこ
とにより、その接触部が鍵2側の凸状支点部26の球面
の同一円周上に3つの接触点12を有する点接触状態と
なり、これらの接触点12を支点に鍵2が、鍵盤として
使用する動きの範囲で上下、左右及びロ−リング方向に
微小角度でそれぞれ回動する。[Tenth Embodiment] Next, a tenth embodiment of the present invention will be described with reference to FIG. In the present embodiment, the convex fulcrum 11 provided on the key 2 has a spherical convex shape, and the fulcrum 26 provided on a key support member (not shown) is formed by connecting a plurality of (for example, three) rod-like members 27 in the circumferential direction. It is arranged and arranged with an interval. Then, the hemispherical convex portion 2 at the tip of each rod-shaped member 27 is formed.
The convex fulcrum portion 11 on the key 2 side is brought into contact with the key 7a in a state where the convex fulcrum portion 11 on the key 2 side is pressed in a direction indicated by an arrow Z in the drawing by a pressing means (not shown), so that the contact portion becomes the spherical surface of the convex fulcrum portion 26 on the key 2 side. A point contact state having three contact points 12 on the same circumference of the key 2 is used, and with these contact points 12 as fulcrums, the key 2 can be moved at small angles in the vertical and horizontal directions and the rolling direction within the range of movement used as a keyboard. Each rotates.
【0053】なお、本実施例におけるその他の構成及び
作用効果は、上述した第5実施例と同一であるから、そ
の説明を省略する。The other constructions, functions and effects of the present embodiment are the same as those of the above-described fifth embodiment, so that the description thereof will be omitted.
【0054】[0054]
【発明の効果】以上詳述した如く本発明の請求項1〜3
記載の楽器の鍵盤装置によれば、鍵支持部材側の支点部
と、鍵側の支点部との接触状態が、球面凸状の同一円周
上に複数の接触点を有する点接触となって、鍵の鍵盤と
して使用する動きの範囲で上下、左右及びロ−リング方
向への微小角度の動きを許容している。このため、鍵の
動作時における摩擦部が少なくなり、鍵の動きが円滑と
なって、鍵のタッチ感が良好になると共に、雑音を発生
しない。As described in detail above, claims 1 to 3 of the present invention.
According to the keyboard device of the described musical instrument, the contact state between the fulcrum on the key support member side and the fulcrum on the key side is a point contact having a plurality of contact points on the same circumference of a spherical convex shape. , A small angle of movement in the vertical and horizontal directions and in the rolling direction is allowed within the range of movement used as a key keyboard. For this reason, the frictional part at the time of the key operation is reduced, the key movement is smooth, the touch feeling of the key is improved, and no noise is generated.
【0055】また、本発明の請求項1〜3記載の楽器の
鍵盤装置によれば、前記両支点部は押圧手段により互い
に圧接する方向に押圧されているため、両支点部相互間
に隙間が発生しない。更に、本発明の請求項1及び2記
載の楽器の鍵盤装置によれば、支点部の先端が球面凸状
の同一円周上に複数の接触点をもって点接触するので、
自動調芯される。 The musical instrument according to claims 1 to 3 of the present invention.
According to the keyboard device, since the two fulcrum portions are pressed by the pressing means in a direction in which they are pressed against each other, no gap is generated between the two fulcrum portions. Further, claims 1 and 2 of the present invention.
According to the keyboard device of the musical instrument described above, the tip of the fulcrum part is spherical convex
Point contact with multiple contact points on the same circumference of
Automatic alignment.
【図1】本発明の第1実施例に係る楽器の鍵盤装置の要
部縦断面図である。FIG. 1 is a longitudinal sectional view of a main part of a keyboard device for a musical instrument according to a first embodiment of the present invention.
【図2】図1のA−A線に沿う断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図3】図1の装置における凹状支点部と凸状支点部の
非係合状態の斜視図である。FIG. 3 is a perspective view of the device of FIG. 1 in a state where a concave fulcrum and a convex fulcrum are not engaged.
【図4】図1の装置における凹状支点部と凸状支点部の
係合状態の要部拡大斜視図である。4 is an enlarged perspective view of a main part of the device of FIG. 1 in a state in which a concave fulcrum and a convex fulcrum are engaged with each other.
【図5】図1の装置における凹状支点部の形状を示す正
面図である。FIG. 5 is a front view showing the shape of a concave fulcrum in the device of FIG. 1;
【図6】図5のB−B線に沿う断面図である。FIG. 6 is a sectional view taken along line BB of FIG. 5;
【図7】図5のC−C線に沿う断面図である。FIG. 7 is a sectional view taken along line CC of FIG. 5;
【図8】図6のF矢視図である。FIG. 8 is a view as viewed from the direction of the arrow F in FIG. 6;
【図9】本発明の第2実施例に係る楽器の鍵盤装置にお
ける凹状支点部と凸状支点部の非係合状態の斜視図であ
る。FIG. 9 is a perspective view of the keyboard device of the musical instrument according to the second embodiment of the present invention, in which the concave fulcrum and the convex fulcrum are not engaged.
【図10】本発明の第3実施例に係る楽器の鍵盤装置に
おける凹状支点部と凸状支点部の係合状態の斜視図であ
る。FIG. 10 is a perspective view showing an engagement state between a concave fulcrum and a convex fulcrum in a keyboard device for a musical instrument according to a third embodiment of the present invention.
【図11】本発明の第4実施例に係る楽器の鍵盤装置に
おける凹状支点部と凸状支点部の係合状態の斜視図であ
る。FIG. 11 is a perspective view showing an engagement state between a concave fulcrum and a convex fulcrum in a keyboard device for a musical instrument according to a fourth embodiment of the present invention.
【図12】本発明の第5実施例に係る楽器の鍵盤装置の
要部縦断面図である。FIG. 12 is a longitudinal sectional view of a main part of a keyboard device for a musical instrument according to a fifth embodiment of the present invention.
【図13】図12のE−E線に沿う断面図である。FIG. 13 is a sectional view taken along the line EE in FIG. 12;
【図14】図12の装置における凹状支点部と凸状支点
部との非係合状態の斜視図である。FIG. 14 is a perspective view of the device of FIG. 12 in a state where a concave fulcrum and a convex fulcrum are not engaged.
【図15】図12の装置における凹状支点部と凸状支点
部との係合状態の要部拡大斜視図である。15 is an enlarged perspective view of a main part of the device shown in FIG. 12 in a state where a concave fulcrum and a convex fulcrum are engaged with each other.
【図16】本発明の第6実施例に係る楽器の鍵盤装置に
おける凹状支点部と凸状支点部の非係合状態の斜視図で
ある。FIG. 16 is a perspective view of a keyboard device of a musical instrument according to a sixth embodiment of the present invention in a state where a concave fulcrum and a convex fulcrum are not engaged.
【図17】本発明の第7実施例に係る楽器の鍵盤装置に
おける凹状支点部と凸状支点部の係合状態の要部を切欠
した平面図である。FIG. 17 is a plan view of a key portion of a keyboard device for a musical instrument according to a seventh embodiment of the present invention, in which main portions in a state where a concave fulcrum and a convex fulcrum are engaged are cut out.
【図18】図17のD−D線に沿う断面図である。FIG. 18 is a sectional view taken along the line DD in FIG. 17;
【図19】本発明の第8実施例に係る楽器の鍵盤装置に
おける鍵支持部材側の支点部と鍵側の支点部の係合状態
の要部拡大斜視図である。FIG. 19 is an enlarged perspective view of an essential part of a key device of a musical instrument keyboard device according to an eighth embodiment of the present invention, in which a fulcrum on a key support member and a fulcrum on a key are engaged.
【図20】本発明の第9実施例に係る楽器の鍵盤装置に
おける鍵支持部材側の支点部と鍵側の支点部の係合状態
の要部拡大斜視図である。FIG. 20 is an enlarged perspective view of a main part of the key device of the musical instrument keyboard device according to the ninth embodiment of the present invention, in which the fulcrum on the key support member and the fulcrum on the key are engaged.
【図21】本発明の第10実施例に係る楽器の鍵盤装置
における鍵支持部材側の支点部と鍵側の支点部の係合状
態の要部拡大斜視図である。FIG. 21 is an enlarged perspective view of an essential part of the key device of the musical instrument keyboard device according to the tenth embodiment of the present invention, in which the fulcrum on the key support member and the fulcrum on the key are engaged.
2 鍵 7 鍵支持部材 8 凹状支点部 9 凹状支点部の左側面 10 凹状支点部の右側面 11 凸状支点部 12 接触点 14 板ばね(鍵復帰手段、押圧手段) 25 押圧手段 26 鍵支持部材に設けた支点部 2 key 7 key support member 8 concave fulcrum 9 left side of concave fulcrum 10 right side of concave fulcrum 11 convex fulcrum 12 contact point 14 leaf spring (key return means, pressing means) 25 pressing means 26 key supporting member Support point provided in
Claims (3)
けられた支点部を押圧手段で押圧した状態で互いに当接
係合させ、これら両支点部の互いに当接した部位を支点
として前記鍵を上下方向に回動自在にすると共に、前記
鍵を鍵復帰手段により上方に回動付勢してなる楽器の鍵
盤装置において、前記両支点部のいずれか一方の支点部
を球面凸状とし且つ他方の支点部を開口端側に向かうに
従い漸次拡開する壁面を有する凹状とし、前記両支点部
の接触状態が前記球面凸状の同一円周上に複数の接触点
を有する点接触となる如く構成したことを特徴とする楽
器の鍵盤装置。1. A fulcrum provided on a key support member is brought into contact with each other while a fulcrum provided on a key is pressed by a pressing means, and the portions of the two fulcrum parts which abut each other are used as fulcrums. In a keyboard device for a musical instrument in which the key is rotatable vertically and the key is rotationally urged upward by key return means, one of the two fulcrum portions may be spherically convex. And the other fulcrum part is a concave shape having a wall surface that gradually expands toward the opening end side, and the contact state of the two fulcrum parts is a point contact having a plurality of contact points on the same circumference of the spherical convex shape. A keyboard device for a musical instrument, wherein the keyboard device is configured as follows.
けられた支点部を押圧手段で押圧した状態で互いに当接
係合させ、これら両支点部の互いに当接した部位を支点
として前記鍵を上下方向に回動自在にすると共に、前記
鍵を鍵復帰手段により上方に回動付勢してなる楽器の鍵
盤装置において、前記両支点部のいずれか一方の支点部
を球面凸状とし且つ他方の支点部の先端を前記球面凸状
の同一円周上に複数の接触点をもって点接触する部位を
有する形状としたことを特徴とする楽器の鍵盤装置。2. A fulcrum portion provided on a key support member is brought into abutment engagement with a fulcrum portion provided on a key in a state where the fulcrum portion provided on the key is pressed by a pressing means. In a keyboard device for a musical instrument in which the key is rotatable vertically and the key is rotationally urged upward by key return means, one of the two fulcrum portions may be spherically convex. A keyboard device for a musical instrument, characterized in that the tip of the other fulcrum portion is shaped to have a portion that makes point contact with a plurality of contact points on the same circumference of the spherical convex shape.
けられた支点部を押圧手段で押圧した状態で互いに当接Abut on each other with the fulcrum parts pressed by the pressing means
係合させ、これら両支点部の互いに当接した部位を支点Engage the two fulcrum parts,
として前記鍵を上下方向に回動自在にすると共に、前記The key is rotatable up and down, and
鍵を鍵復帰手段により上方に回動付勢してなる楽器の鍵The key of the musical instrument which is turned upward by the key return means
盤装置において、前記両支点部のいずれか一方の支点部In the panel device, one of the fulcrum portions
の少なくとも一部を球面凸状とし且つ他方の支点部の先At least a portion of the fulcrum part and the tip of the other fulcrum part
端を前記球面凸状の同一円周上に接触点をもって点接触Point contact with the contact point on the same circumference of the spherical convex end
する部位を有する形状としたことを特徴とする楽器の鍵Key of a musical instrument characterized by having a shape that has
盤装置。Panel equipment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4321235A JP2792371B2 (en) | 1992-11-05 | 1992-11-05 | Musical instrument keyboard device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4321235A JP2792371B2 (en) | 1992-11-05 | 1992-11-05 | Musical instrument keyboard device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06149231A JPH06149231A (en) | 1994-05-27 |
JP2792371B2 true JP2792371B2 (en) | 1998-09-03 |
Family
ID=18130325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4321235A Expired - Fee Related JP2792371B2 (en) | 1992-11-05 | 1992-11-05 | Musical instrument keyboard device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2792371B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3084200B1 (en) * | 2018-07-18 | 2021-06-18 | Expressive | IMPROVED HAPTICAL CONTROLLER |
-
1992
- 1992-11-05 JP JP4321235A patent/JP2792371B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH06149231A (en) | 1994-05-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5083381B2 (en) | Keyboard device | |
JP2792371B2 (en) | Musical instrument keyboard device | |
JPH09269783A (en) | Keyboard device | |
US11862134B2 (en) | Key support structure of keyboard device | |
JP2002006848A (en) | Keyboard device | |
JP2000352978A (en) | Keyboard device | |
JP2906883B2 (en) | Musical instrument keyboard device | |
JP6361154B2 (en) | Operation detection device | |
JP4715570B2 (en) | Keyboard device | |
US5959228A (en) | Key support device | |
JP2848166B2 (en) | Musical instrument keyboard device | |
JPH11265177A (en) | Keyboard device | |
JP5028908B2 (en) | Foot pedal device | |
JP3268134B2 (en) | Keyboard switch for electronic musical instrument | |
JP3299041B2 (en) | Electronic musical instrument keyboard device | |
JP2569947B2 (en) | Keyboard device | |
JP2003177755A (en) | Keyed instrument | |
JPH11242476A (en) | Keyboard device | |
JP2002189471A (en) | Keyboard device | |
JP3109432B2 (en) | Electronic musical instrument board holding structure | |
JP2007087719A (en) | Operation knob structure | |
JPH0844361A (en) | Keyboard switch of electronic musical instrument | |
JPS63125993A (en) | Keyboard for electronic musical instrument | |
JP3912415B2 (en) | Spring mechanism | |
JPH066396Y2 (en) | Keyboard device for electronic musical instruments |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313532 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080619 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090619 Year of fee payment: 11 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100619 Year of fee payment: 12 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100619 Year of fee payment: 12 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110619 Year of fee payment: 13 |
|
LAPS | Cancellation because of no payment of annual fees |