JP2001356773A - Keyboard device - Google Patents
Keyboard deviceInfo
- Publication number
- JP2001356773A JP2001356773A JP2000179816A JP2000179816A JP2001356773A JP 2001356773 A JP2001356773 A JP 2001356773A JP 2000179816 A JP2000179816 A JP 2000179816A JP 2000179816 A JP2000179816 A JP 2000179816A JP 2001356773 A JP2001356773 A JP 2001356773A
- Authority
- JP
- Japan
- Prior art keywords
- key
- keys
- sensor
- contact
- pressure
- 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
Landscapes
- Electrophonic Musical Instruments (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、電子ピアノなど
の鍵盤楽器における鍵盤装置に関する。The present invention relates to a keyboard device for a keyboard instrument such as an electronic piano.
【０００２】[0002]
【従来の技術】従来、電子ピアノなどの電子鍵盤楽器に
おいては、通常の押鍵後、更に鍵を押し込んだ力に応じ
て、音高や音色、音量などを変化させ、発音中の音に各
種の効果を付与し、音の表現力を高めるアフタータッチ
機能を有するものがある。図１０〜図１５はその一例を
示した図である。この電子鍵盤楽器は、図１０および図
１１に示すように、楽器ケース内に組み込まれる鍵盤シ
ャーシ１と、この鍵盤シャーシ１上に上下方向に回動可
能に取り付けられた合成樹脂製の複数の鍵２と、これら
複数の鍵２に対応して配置され、押鍵時に各鍵２によっ
て押圧されるスイッチ部材３と、押鍵後に更に各鍵２が
押し込まれる力を検出するアフタータッチ用の感圧セン
サ４とを備えている。2. Description of the Related Art Conventionally, in an electronic keyboard instrument such as an electronic piano, after a normal key is pressed, a pitch, a tone, a volume, and the like are changed according to a force of further pressing the key, and various sounds are generated. Some have an aftertouch function that imparts the effect described above and enhances the expressiveness of sound. 10 to 15 are diagrams showing an example. As shown in FIGS. 10 and 11, the electronic keyboard musical instrument includes a keyboard chassis 1 incorporated in a musical instrument case, and a plurality of keys made of a synthetic resin mounted on the keyboard chassis 1 so as to be vertically rotatable. 2, a switch member 3 arranged corresponding to the plurality of keys 2 and pressed by each key 2 when the key is pressed, and a pressure-sensitive for after touch for detecting a force of each key 2 being pressed after the key is pressed. And a sensor 4.
【０００３】複数の鍵２は、図１０に示すように、複数
の白鍵２ａと複数の黒鍵２ｂとからなっている。この場
合、黒鍵２ｂは、白鍵２ａの長さよりも短く、かつ白鍵
２ａの高さよりも高く形成されており、これ以外は白鍵
２ａとほぼ同じ構造になっている。このため、以下の説
明は白鍵２ａを基にして述べる。複数の鍵２は、図１１
に示すように、それぞれ下面側が開放された中空状に形
成され、その後部（図１１では右側部）に上下方向に弾
性変形する薄肉状の弾性変形部６が形成され、これら弾
性変形部６の後端部が鍵配列方向に連続する共通の連結
部７に白鍵２ａおよび黒鍵２ｂごとに並列に配置された
状態で連結形成され、これら連結部７が白鍵２ａおよび
黒鍵２ｂごとに重ね合わされた状態で鍵盤シャーシ１の
鍵取付部８にビス９により取り付けられている。As shown in FIG. 10, a plurality of keys 2 are composed of a plurality of white keys 2a and a plurality of black keys 2b. In this case, the black key 2b is formed to be shorter than the length of the white key 2a and higher than the height of the white key 2a, and otherwise has substantially the same structure as the white key 2a. Therefore, the following description is based on the white key 2a. The plurality of keys 2 are shown in FIG.
As shown in FIG. 3, the lower surface side is formed in a hollow shape, and a thin elastic deformation portion 6 which is elastically deformed in a vertical direction is formed at a rear portion (right side portion in FIG. 11) of the elastic deformation portion 6. The rear end is connected to a common connecting portion 7 that is continuous in the key arrangement direction in a state where the connecting portion is arranged in parallel for each of the white key 2a and the black key 2b, and these connecting portions 7 are provided for each of the white key 2a and the black key 2b. It is mounted on the key mounting portion 8 of the keyboard chassis 1 with screws 9 in an overlapping state.
【０００４】これら複数の鍵２は、それぞれ押鍵される
と、図１２に示すように、各弾性変形部６を中心に下方
向に回動し、各鍵２の中間部分に形成された２組のスイ
ッチ押圧部５がスイッチ部材３を押圧した後、各鍵２の
下端部が感圧センサ４を押圧するように構成されてい
る。この場合、鍵２は、図１１に示すように、弾性変形
部６およびスイッチ部材３の後述するドーム状の膨出部
１５の各弾性力によって押し上げられ、これにより鍵２
の前部（図１１では左側部）に設けられたＬ字状のスト
ッパ片１０が鍵盤シャーシ１のバカ孔１ａを通して鍵盤
シャーシ１の下面に設けられたフェルトなどの上限スト
ッパ１１に当接し、所定の上限位置（初期位置）に位置
規制されている。また、上限ストッパ１１の近傍に位置
する鍵盤シャーシ１上には、鍵２の横振れを防ぐ鍵ガイ
ド部１２が設けられている。When each of the keys 2 is depressed, as shown in FIG. 12, the keys 2 pivot downward about the respective elastically deforming portions 6 and are formed in the intermediate portions of the keys 2. After the set of switch pressing parts 5 presses the switch member 3, the lower end of each key 2 presses the pressure-sensitive sensor 4. In this case, as shown in FIG. 11, the key 2 is pushed up by the respective elastic forces of the elastically deforming portion 6 and the dome-shaped bulging portion 15 of the switch member 3 which will be described later.
The L-shaped stopper piece 10 provided at the front portion of the keyboard chassis 1 (the left side portion in FIG. 11) contacts the upper limit stopper 11 such as felt provided on the lower surface of the keyboard chassis 1 through the stupid hole 1a of the keyboard chassis 1, and Is restricted to the upper limit position (initial position). On the keyboard chassis 1 located near the upper limit stopper 11, a key guide portion 12 for preventing the key 2 from swaying is provided.
【０００５】スイッチ部材３は、ゴムシート１３とスイ
ッチ基板１４とを備え、鍵盤シャーシ１のほぼ中間部分
における下面に配置されている。ゴムシート１３は、鍵
２の配列方向に連続する帯状に形成され、各鍵２の２組
のスイッチ押圧部５に対応する箇所に弾性変形可能なド
ーム状の２組の膨出部１５がそれぞれ形成され、これら
膨出部１５が鍵盤シャーシ１の各貫通孔１ｂ内に下側か
ら挿入されて上方に突出している。スイッチ基板１４
は、ゴムシート１３を介して鍵盤シャーシ１の下面に取
り付けられている。これにより、スイッチ部材３は、押
鍵動作に応じてゴムシート１３の各膨出部１５がスイッ
チ押圧部５によって押圧されたときに、各膨出部１５が
順次弾性変形して、その各内部にそれぞれ設けられた各
可動接点がスイッチ基板１４に設けられた各固定接点に
時間差をもって順次接触し、これにより押鍵された鍵２
に対応するスイッチ信号を出力するように構成されてい
る。[0005] The switch member 3 includes a rubber sheet 13 and a switch board 14, and is disposed on a lower surface in a substantially intermediate portion of the keyboard chassis 1. The rubber sheet 13 is formed in a band shape continuous in the arrangement direction of the keys 2, and two sets of elastically deformable dome-shaped bulging parts 15 are provided at locations corresponding to the two sets of switch pressing parts 5 of each key 2. These bulging portions 15 are inserted into the respective through holes 1b of the keyboard chassis 1 from below and protrude upward. Switch board 14
Is attached to the lower surface of the keyboard chassis 1 via a rubber sheet 13. Accordingly, when each of the bulging portions 15 of the rubber sheet 13 is pressed by the switch pressing portion 5 in response to a key-pressing operation, each of the bulging portions 15 is sequentially elastically deformed, and each of the internal portions thereof is deformed. The movable contacts provided on the switch substrate 14 sequentially contact the fixed contacts provided on the switch substrate 14 with a time lag, and the key
Is output.
【０００６】アフタータッチ用の感圧センサ４は、押鍵
された鍵２の各スイッチ押圧部５がスイッチ部材３の各
膨出部１５を押圧した後、更に鍵２が押し込まれる力
（感圧センサ４を押圧する力）を検出するものであり、
図１０および図１１に示すように、上限ストッパ片１１
に対応する鍵盤シャーシ１の上面に各鍵２の配列方向に
沿って設けられている。この感圧センサ４は、図１３、
図１４（ａ）、および図１４（ｂ）に示すように、セン
サ基板１６上に第１、第２電極１７、１８が鍵２の長手
方向における前後に対向して配置され、これら第１、第
２電極１７、１８の前後両側（図１４（ａ）では左右両
側）にスペーサ１９が配置され、このスペーサ１９上に
感圧シート２０が第１、第２電極１７、１８の上方に離
間して配置され、この感圧シート２０上にフェルト２１
が配置された構成で、全体が鍵２の配列方向に沿う帯状
に構成されている。[0006] The pressure sensor 4 for after touching is a force (pressure-sensitive) by which the key 2 is further pressed after each switch pressing portion 5 of the pressed key 2 presses each bulging portion 15 of the switch member 3. A force that presses the sensor 4).
As shown in FIG. 10 and FIG.
Are provided along the arrangement direction of the keys 2 on the upper surface of the keyboard chassis 1 corresponding to. This pressure-sensitive sensor 4 is shown in FIG.
As shown in FIGS. 14A and 14B, first and second electrodes 17 and 18 are arranged on the sensor substrate 16 so as to face the front and rear in the longitudinal direction of the key 2. Spacers 19 are arranged on both front and rear sides (left and right sides in FIG. 14A) of the second electrodes 17 and 18, and the pressure-sensitive sheet 20 is separated above the first and second electrodes 17 and 18 on the spacer 19. The felt 21 is placed on the pressure-sensitive sheet 20.
Are arranged, and the whole is formed in a band shape along the arrangement direction of the keys 2.
【０００７】この場合、第１、第２電極１７、１８は、
図１３に示すように、それぞれほぼ櫛歯状に形成され、
これらが互いに噛み合うように配置されている。すなわ
ち、第１電極１７は、第２電極１８よりも鍵２の後部側
（図１３では上側）に位置し、鍵２の配列方向に沿って
ライン状に設けられている。この第１電極１７の所定箇
所には、第１接点部２２が鍵２の前側（同図では下側）
に向けて突出し、かつ鍵２の配列方向における各鍵２の
右端部にそれぞれ対応して設けられている。また、第２
電極１８は、第１電極１７よりも鍵２の前部側（図１３
では下側）に位置し、鍵２の配列方向に沿って第１電極
１７と平行なライン状に設けられている。この第２電極
１８の所定箇所には、第２接点部２３が鍵２の後側（同
図では上側）に向けて突出し、かつ鍵２の配列方向にお
ける各鍵２の左端部にそれぞれ対応して設けられてい
る。In this case, the first and second electrodes 17, 18 are
As shown in FIG. 13, each is formed in a substantially comb shape,
These are arranged so as to mesh with each other. That is, the first electrode 17 is located on the rear side (the upper side in FIG. 13) of the key 2 with respect to the second electrode 18 and is provided in a line along the key 2 arrangement direction. At a predetermined position of the first electrode 17, a first contact portion 22 is provided on the front side of the key 2 (the lower side in the figure).
And is provided corresponding to the right end of each key 2 in the key 2 arrangement direction. Also, the second
The electrode 18 is closer to the front of the key 2 than the first electrode 17 (FIG. 13).
(Lower side in FIG. 2), and is provided in a line parallel to the first electrode 17 along the arrangement direction of the keys 2. At a predetermined position of the second electrode 18, a second contact point 23 projects toward the rear side (upward in the figure) of the key 2 and corresponds to the left end of each key 2 in the key 2 arrangement direction. It is provided.
【０００８】また、感圧シート２０は、図示しないセン
サシートの下面に感圧層を設けた２層構造で、この感圧
層が第１、第２接点部２２、２３に接離可能に接触する
ように構成されている。また、スペーサ１９は、第１、
第２接点部２２、２３と感圧シート２０とのギャップを
規制すると共に、センサ基板１６と感圧シート２０とを
接着している。なお、フェルト２１は、スペーサ１９の
間隔よりも少し狭い幅で設けられ、鍵２の下端部によっ
て押圧されたときに、感圧シート２０を撓ませて第１、
第２接点部２２、２３に接触させるほか、鍵２の下限ス
トッパの機能をも兼ねている。The pressure-sensitive sheet 20 has a two-layer structure in which a pressure-sensitive layer is provided on the lower surface of a sensor sheet (not shown), and the pressure-sensitive layer comes into contact with the first and second contact portions 22 and 23 so that the pressure-sensitive layer can come and go. It is configured to be. In addition, the spacer 19 has a first,
The gap between the second contact portions 22 and 23 and the pressure-sensitive sheet 20 is regulated, and the sensor substrate 16 and the pressure-sensitive sheet 20 are bonded. In addition, the felt 21 is provided with a width slightly smaller than the interval between the spacers 19, and when pressed by the lower end of the key 2, the pressure-sensitive sheet 20 bends, and
In addition to contacting the second contact portions 22 and 23, it also functions as a lower limit stopper of the key 2.
【０００９】このような感圧センサ４は、図１５に示す
ように、鍵２によって感圧シート２０がフェルト２１を
介して押圧されると、その押圧力に応じて感圧シート２
０が撓んで第１、第２接点部２２、２３に接触し、その
接触面積と接触圧とに応じて第１、第２電極１７、１８
の電気抵抗（電圧）が変化し、この電気抵抗に応じた検
出信号を出力することにより、鍵２の押し込み力、つま
り感圧センサ４に対する押圧力を検出する。この場合、
感圧センサ４は、鍵２の上下方向に回動する押鍵力だけ
でなく、鍵２の捩じれ（鍵２のローリング）による鍵２
の左右方向の押鍵力をも同時に検出する。すなわち、感
圧センサ４は、鍵２の右端部によって押圧された箇所の
感圧シート２０が第１接点部２２に接触し、その接触面
積および接触圧に応じた電気抵抗と、鍵２の左端部によ
って押圧された箇所の感圧シート２０が第２接点部２３
に接触し、その接触面積および接触圧に応じた電気抵抗
との差分値により、鍵２の左右方向の押鍵力を検出して
いる。As shown in FIG. 15, when the pressure-sensitive sheet 20 is pressed by the key 2 via the felt 21 as shown in FIG.
0 bends to contact the first and second contact portions 22 and 23, and the first and second electrodes 17, 18 according to the contact area and the contact pressure.
Of the key 2, that is, the pressing force on the pressure-sensitive sensor 4 is detected by outputting a detection signal corresponding to the electric resistance. in this case,
The pressure-sensitive sensor 4 detects not only the key pressing force that rotates the key 2 in the vertical direction, but also the key 2 caused by twisting of the key 2 (rolling of the key 2).
At the same time. That is, the pressure-sensitive sensor 4 detects that the pressure-sensitive sheet 20 at the position pressed by the right end of the key 2 comes into contact with the first contact portion 22, the electrical resistance according to the contact area and the contact pressure, and the left end of the key 2. The pressure-sensitive sheet 20 at the position pressed by the second contact portion 23
The key pressing force in the left-right direction of the key 2 is detected based on the difference between the contact area and the electric resistance according to the contact pressure.
【００１０】このような電子鍵盤楽器では、鍵２が押鍵
されると、図１２に示すように、鍵２が弾性変形部６を
中心に下方に回動し、その鍵２の各スイッチ押圧部５が
スイッチ部材３の各膨出部１５を順次押圧して各可動接
点を各固定接点に時間差をもって順次接触させ、これに
よりスイッチ部材３がスイッチ信号を出力し、押鍵され
た鍵２に応じた音を発する。この後、更に鍵２が押し込
まれると、図１５に示すように、感圧センサ４が鍵２の
下端部によって押圧されて感圧センサ４の感圧シート２
０が第１、第２接点部２２、２３に接触し、これにより
鍵２の押し込み力に応じて感圧センサ４の電気抵抗が変
化し、この電気抵抗に応じた検出信号に基づいて、発音
中の音に、音高や音色、音量などを変化させる各種の効
果を付与し、音の表現力を高めている。In such an electronic keyboard instrument, when the key 2 is depressed, as shown in FIG. 12, the key 2 pivots downward around the elastically deforming portion 6, and each switch of the key 2 is pressed. The portion 5 sequentially presses each bulging portion 15 of the switch member 3 so that each movable contact sequentially contacts each fixed contact with a time lag, whereby the switch member 3 outputs a switch signal, and Emit the appropriate sound. Thereafter, when the key 2 is further depressed, the pressure-sensitive sensor 4 is pressed by the lower end of the key 2 as shown in FIG.
0 contacts the first and second contact portions 22 and 23, whereby the electric resistance of the pressure-sensitive sensor 4 changes according to the pressing force of the key 2, and the sound is generated based on a detection signal corresponding to the electric resistance. Various effects that change the pitch, tone, volume, etc., are added to the middle sound to enhance the expressiveness of the sound.
【００１１】[0011]
【発明が解決しようとする課題】ところで、このような
電子鍵盤楽器では、押鍵された鍵２が感圧センサ４を押
圧するときに、例えば、図１５において左側に位置する
白鍵２ａとその右側に隣接する黒鍵２ｂのように、各鍵
２ａ、２ｂがそれぞれ左右に傾くことなくほぼ水平に押
鍵されると、各鍵２ａ、２ｂの左右の端部に対応する箇
所の感圧シート２０がそれぞれ第１、第２接点部２２、
２３にほぼ均等に接触し、これによりその接触状態に応
じたアフタータッチデータが得られる。しかし、図１５
において右側に位置する白鍵２ａのように、その白鍵２
ａが捩じれて、例えば左下がりに傾いた状態で押鍵され
たときには、この白鍵２ａの左端部に対応する箇所の感
圧シート２０が強く押し下げられ、これに対応する第２
接点部２３に左寄りに接触することになるため、押鍵さ
れた白鍵２の左側に隣接する黒鍵２ｂの右端部に対応す
る第１接点部２２にも感圧シート２０が接触してしまう
ことがあり、このため正確なアフタータッチデータを得
ることができないという問題がある。By the way, in such an electronic keyboard instrument, when the pressed key 2 presses the pressure-sensitive sensor 4, for example, the white key 2a located on the left side in FIG. When the keys 2a and 2b are pressed substantially horizontally without tilting left and right, like the black key 2b adjacent to the right side, the pressure-sensitive sheets at the positions corresponding to the left and right ends of the keys 2a and 2b. 20 is a first and second contact portion 22, respectively.
Thus, after-touch data corresponding to the state of contact is obtained. However, FIG.
, Like the white key 2a located on the right side,
When the key a is twisted and pressed, for example, in a state of being tilted to the left, the pressure-sensitive sheet 20 at the position corresponding to the left end of the white key 2a is strongly pressed down, and the second corresponding key is pressed.
Since the contact portion 23 contacts the left side, the pressure-sensitive sheet 20 also contacts the first contact portion 22 corresponding to the right end of the black key 2 b adjacent to the left side of the pressed white key 2. Therefore, there is a problem that accurate after touch data cannot be obtained.
【００１２】この発明の課題は、押鍵された鍵によって
隣接する鍵に対応する箇所の感圧センサが受ける影響を
軽減することである。An object of the present invention is to reduce the influence of a pressed key on a pressure-sensitive sensor at a location corresponding to an adjacent key.
【００１３】[0013]
【課題を解決するための手段】この発明は、鍵盤シャー
シと、この鍵盤シャーシ上に上下方向に回動可能に設け
られた複数の鍵と、前記鍵盤シャーシ上に前記鍵の配列
方向に沿って配置され、押鍵された前記鍵の押し込み力
を検出する感圧センサとを備え、この感圧センサで検出
した検出信号に基づいて発音中の音に効果を付与する鍵
盤装置において、前記感圧センサは、前記鍵の配列方向
における前記鍵の各一端部の下側にそれぞれ対応する複
数の第１接点部を有する第１電極と、前記鍵の各他端部
の下側にそれぞれ対応する複数の第２接点部を有する第
２電極と、前記鍵の押鍵操作に応じて前記第１、第２接
点部に接離可能に接触する感圧シートとを備え、前記鍵
には、それぞれ前記感圧センサの前記第１、第２接点部
に対応する箇所を押圧するセンサ押圧部が設けられ、こ
のセンサ押圧部の下端面は、前記鍵の中心側に向けて次
第に下方に突出する傾斜状に形成されていることを特徴
とする。According to the present invention, there is provided a keyboard chassis, a plurality of keys rotatably provided on the keyboard chassis in a vertical direction, and a key array on the keyboard chassis along a direction in which the keys are arranged. A keyboard device that is disposed and detects a pressing force of the pressed key, and applies an effect to a sound being generated based on a detection signal detected by the pressure sensor. The sensor has a first electrode having a plurality of first contact portions respectively corresponding to a lower side of each end of the key in the key arrangement direction, and a plurality of electrodes corresponding to a lower side of each other end of the key. A second electrode having a second contact portion, and a pressure-sensitive sheet that comes into contact with and detaches from the first and second contact portions in response to a key pressing operation of the key. Locations corresponding to the first and second contact portions of the pressure-sensitive sensor Sensor pressing portion is provided for pressurizing, the lower end surface of the sensor pressing section is characterized by being formed in an inclined shape which gradually protrudes downwardly toward the center of the key.
【００１４】この発明によれば、押鍵された鍵が感圧セ
ンサを押圧するときに、鍵に設けられたセンサ押圧部が
感圧センサの第１接点部と第２接点部とに対応する箇所
をそれぞれ押圧すると共に、押鍵された鍵が捩じれて鍵
の配列方向に傾いても、そのセンサ押圧部の下端面が鍵
の中心側に向けて次第に下方に突出する傾斜状に形成さ
れていることにより、センサ押圧部が鍵の中心側に位置
する感圧シートを強く押し下げて第１、第２接点部に接
触させるが、鍵の端部側に位置する感圧シートを強く押
し下げることがないため、押鍵された鍵によって隣接す
る鍵に対応する第１、第２接点部に感圧シートが接触し
ないようにすることができ、これにより押鍵された鍵に
よって隣接する鍵に対応する箇所の感圧センサが受ける
影響を軽減することができる。According to the present invention, when the pressed key presses the pressure-sensitive sensor, the sensor pressing portions provided on the key correspond to the first contact portion and the second contact portion of the pressure-sensitive sensor. Even when each part is pressed, even if the pressed key is twisted and inclined in the key arrangement direction, the lower end surface of the sensor pressing part is formed in an inclined shape that gradually projects downward toward the center of the key. As a result, the sensor pressing portion strongly presses down the pressure-sensitive sheet located on the center side of the key to make contact with the first and second contact portions, but strongly presses down the pressure-sensitive sheet located on the end side of the key. Since there is no key, the pressure-sensitive sheet can be prevented from contacting the first and second contact portions corresponding to the adjacent keys by the pressed key, whereby the key pressed corresponds to the adjacent key. Reduce the effect on the pressure sensor at Can.
【００１５】この場合、請求項２に記載のごとく、前記
センサ押圧部は、前記第１接点部と前記第２接点部との
間に対応する中間部分に切欠部が設けられ、この切欠部
によって前記第１接点部に対応する第１センサ押圧部と
前記第２接点部に対応する第２センサ押圧部とに分割さ
れていることにより、各鍵に対応する第１接点部と第２
接点部との間隔が狭くても、その第１、第２接点部間に
対応する箇所の感圧シートが切欠部によって押し下げら
れることがないため、押鍵された鍵が捩じれて傾いて
も、鍵の配列方向における各鍵の左右方向の押鍵力を正
確に検出することができる。この場合には、請求項３に
記載のごとく、前記センサ押圧部は、前記鍵の配列方向
に沿って一直線状に配列されていても良く、また請求項
４に記載のごとく、前記センサ押圧部は、前記第１セン
サ押圧部と前記第２センサ押圧部とが前記鍵にそれぞれ
互い違いに設けられ、この状態で前記第１、第２センサ
押圧部が前記鍵の配列方向に沿って千鳥状に配列されて
いても良い。特に、第１、第２センサ押圧部を鍵の配列
方向に沿って千鳥状に配列した場合には、各鍵に対応す
る第１接点部と第２接点部との間隔が狭くても、押鍵時
に第１、第２センサ押圧部によって押圧された箇所の感
圧シートがこれに対応する第１、第２接点部に跨って接
触するのを大幅に軽減することができるので、押鍵され
た鍵の左右方向の押鍵力を、より一層、正確に検出する
ことができる。In this case, as described in claim 2, the sensor pressing portion is provided with a notch in an intermediate portion corresponding to between the first contact portion and the second contact portion. By being divided into a first sensor pressing portion corresponding to the first contact portion and a second sensor pressing portion corresponding to the second contact portion, a first contact portion corresponding to each key and a second sensor pressing portion are formed.
Even if the interval between the first and second contact portions is small, the pressure-sensitive sheet corresponding to the portion between the first and second contact portions is not pushed down by the notch portion. Therefore, even if the pressed key is twisted and inclined, The right and left key pressing force of each key in the key arrangement direction can be accurately detected. In this case, as described in claim 3, the sensor pressing portions may be arranged in a straight line along the arrangement direction of the keys, and as in claim 4, the sensor pressing portions may be arranged in a straight line. The first sensor pressing portion and the second sensor pressing portion are provided alternately on the key, and in this state, the first and second sensor pressing portions are staggered along the key arrangement direction. They may be arranged. In particular, when the first and second sensor pressing portions are arranged in a staggered manner along the key arrangement direction, even if the distance between the first contact portion and the second contact portion corresponding to each key is narrow, the pressing is performed. When the key is pressed, the pressure-sensitive sheet at the location pressed by the first and second sensor pressing portions can be greatly reduced from contacting over the corresponding first and second contact portions. The left and right key pressing force of the key can be detected more accurately.
【００１６】また、請求項５に記載のごとく、前記第１
電極は、前記第１接点部が前記鍵ごとに互い違いに異な
る方向に突出して設けられ、前記第２電極は、前記鍵の
長手方向における前記第１電極の前後両側に設けられ、
かつ前記第２接点部がそれぞれ前記第１電極に向けて突
出して前記第１接点部に対向した状態で設けられ、前記
センサ押圧部は、前記鍵ごとに互いに対向し合う前記第
１、第２接点部に対応して設けられ、これにより前記鍵
の配列方向に沿って千鳥状に配列されていることによ
り、各鍵に対応する第１、第２接点部が隣接する鍵に対
応する第１、第２接点部に接近しないため、押鍵された
鍵によって隣接する鍵に対応する箇所の感圧センサが、
より一層、影響を受けないようにすることができる。さ
らに、請求項６に記載のごとく、前記感圧センサは、互
いに隣接する前記鍵の間に対応する前記第１、第２接点
部間に隔壁部が設けられていることにより、押鍵された
鍵が捩じれて傾いても、これに隣接する鍵に対応する箇
所の感圧シートを隔壁部によって支持することができる
ので、押鍵された鍵によって隣接する鍵に対応する第
１、第２接点部に感圧シートが接触するのを確実に防ぐ
ことができる。[0016] According to a fifth aspect of the present invention, the first device is provided.
The electrodes are provided such that the first contact portions protrude alternately in different directions for each key, and the second electrodes are provided on both front and rear sides of the first electrode in a longitudinal direction of the key,
The second contact portions are provided so as to protrude toward the first electrode and face the first contact portion, respectively, and the sensor pressing portion is configured to face the first and second sensors facing each other for each key. The first and second contact portions corresponding to the keys are provided corresponding to the contact portions, and are arranged in a staggered manner along the arrangement direction of the keys. , Because it does not approach the second contact portion, the pressure-sensitive sensor at the position corresponding to the adjacent key by the pressed key
It can be made even more unaffected. Further, as described in claim 6, the pressure-sensitive sensor is depressed by providing a partition between the first and second contact portions corresponding to between the adjacent keys. Even if the key is twisted and tilted, the pressure-sensitive sheet at a location corresponding to the key adjacent thereto can be supported by the partition, so that the first and second contact points corresponding to the adjacent keys by the pressed key. It is possible to reliably prevent the pressure-sensitive sheet from contacting the portion.
【００１７】[0017]
【発明の実施の形態】［第１実施形態］以下、図１〜図
４を参照して、この発明の鍵盤装置の第１実施形態につ
いて説明する。なお、図１０〜図１５に示された従来例
と同一部分には同一符号を付して説明する。この鍵盤装
置は、各鍵２にそれぞれセンサ押圧部３０を設けた構造
で、これ以外は従来例とほぼ同じ構造になっている。す
なわち、センサ押圧部３０は、図１〜図３に示すよう
に、感圧センサ４の第１、第２接点部２２、２３に対応
する箇所の各鍵２の内面にそれぞれ設けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] A first embodiment of a keyboard device according to the present invention will be described below with reference to FIGS. The same parts as those in the conventional example shown in FIGS. This keyboard device has a structure in which a sensor pressing portion 30 is provided for each key 2, and has almost the same structure as the conventional example except for this. That is, as shown in FIGS. 1 to 3, the sensor pressing portion 30 is provided on the inner surface of each key 2 at a position corresponding to the first and second contact portions 22 and 23 of the pressure-sensitive sensor 4.
【００１８】各センサ押圧部３０は、図２に示すよう
に、それぞれ鍵２の内面に形成された立て板状のリブで
あり、第１接点部２２と第２接点部２３との間に対応す
るリブの中間部分に切欠部３１が設けられ、この切欠部
３１を境にして第１接点部２２に対応する第１センサ押
圧部３２と第２接点部２３に対応する第２センサ押圧部
３３とに分割されている。これら第１、第２センサ押圧
部３２、３３の各下端面は、それぞれ鍵２の中心側に向
けて次第に下方に突出する傾斜状の湾曲面３２ａ、３３
ａに形成されている。また、これら第１、第２センサ押
圧部３２、３３は、図１に示すように、鍵２の配列方向
に沿って一直線状に配列されている。この場合、第１、
第２接点部２２、２３は、各鍵２の左右の両端部から少
し鍵２の内側に位置して設けられている。これにより、
第１、第２接点部２２、２３の各中心部は、第１、第２
センサ押圧部３２、３３の各中間部にそれぞれ対応して
いる。As shown in FIG. 2, each sensor pressing portion 30 is an upright plate-like rib formed on the inner surface of the key 2, and is provided between the first contact portion 22 and the second contact portion 23. A notch 31 is provided at an intermediate portion of the rib to be formed. A first sensor pressing portion 32 corresponding to the first contact portion 22 and a second sensor pressing portion 33 corresponding to the second contact portion 23 are provided with the notch 31 as a boundary. And is divided into: The lower end surfaces of the first and second sensor pressing portions 32 and 33 are respectively inclined curved surfaces 32 a and 33 that gradually project downward toward the center of the key 2.
a. The first and second sensor pressing portions 32 and 33 are arranged in a straight line along the arrangement direction of the keys 2 as shown in FIG. In this case, the first,
The second contact portions 22 and 23 are provided slightly inside the key 2 from both left and right ends of each key 2. This allows
The respective center portions of the first and second contact portions 22 and 23 are the first and second contact portions.
It corresponds to each intermediate part of the sensor pressing parts 32 and 33, respectively.
【００１９】このような鍵盤装置では、鍵２が押鍵さ
れ、スイッチ部材３がオンして発音を開始した後、更に
鍵２が押し込まれて感圧センサ４を押圧するときに、図
４に示すように、鍵２に形成されたセンサ押圧部３０の
第１センサ押圧部３２が感圧センサ４の第１接点部２２
に対応する箇所を押圧すると共に、第２センサ押圧部３
３が第２接点部２３に対応する箇所を押圧する。この場
合、図４に示す３つの鍵２のうち、例えば、左側に位置
する白鍵２ａと中間に位置する黒鍵２ｂのように、各鍵
２ａ、２ｂが左右に傾くことなくほぼ水平に押し下げら
れると、白鍵２ａと黒鍵２ｂの各第１、第２センサ押圧
部３２、３３によって、これに対応する箇所の感圧シー
ト２０がそれぞれ押圧されて第１、第２接点部２２、２
３にほぼ均等に接触する。このときには、第１、第２セ
ンサ押圧部３２、３３の各下端面が鍵２の中心側に向け
て次第に下方に突出する傾斜状の湾曲面３２ａ、３３ａ
に形成されているので、押圧された箇所の感圧シート２
０は、第１、第２接点部２２、２３における鍵２の中心
側に強く押し付けられ、鍵２の各端部側には強く押し付
けられることがない。このため、押圧された鍵２によっ
て隣接する鍵２に対応する第１、第２接点部２２、２３
に感圧シート２０が接触しないようにすることができ
る。In such a keyboard device, after the key 2 is depressed and the switch member 3 is turned on to start sounding, when the key 2 is further depressed and the pressure-sensitive sensor 4 is depressed, as shown in FIG. As shown, the first sensor pressing portion 32 of the sensor pressing portion 30 formed on the key 2 is connected to the first contact portion 22 of the pressure-sensitive sensor 4.
And a second sensor pressing portion 3
3 presses a portion corresponding to the second contact portion 23. In this case, of the three keys 2 shown in FIG. 4, each key 2a, 2b is pushed down substantially horizontally without tilting left and right, such as a white key 2a located on the left side and a black key 2b located in the middle, for example. Then, the first and second sensor pressing portions 32 and 33 of the white key 2a and the black key 2b respectively press the corresponding pressure-sensitive sheets 20 at the corresponding portions, and the first and second contact portions 22 and 2 are pressed.
3 almost evenly. At this time, the lower end surfaces of the first and second sensor pressing portions 32 and 33 are inclined curved surfaces 32 a and 33 a that gradually project downward toward the center of the key 2.
, The pressure-sensitive sheet 2 at the pressed location
0 is strongly pressed to the center side of the key 2 in the first and second contact portions 22 and 23, and is not strongly pressed to each end side of the key 2. Therefore, the first and second contact portions 22 and 23 corresponding to the adjacent key 2 by the pressed key 2
The pressure-sensitive sheet 20 can be prevented from coming into contact with.
【００２０】また、図４において右側に位置する白鍵２
ａのように、その白鍵２ａが捩じれて、例えば左下がり
に傾いた状態で押鍵されたときには、センサ押圧部３０
の左側の第２センサ押圧部３３が感圧シート２０を第２
接点部２３に強く押し付けて広い接触面積で接触させる
が、右側の第１センサ押圧部３２は感圧シート２０を第
１接点部２２に強く押し付けないため、狭い接触面積で
接触する。このときにも、第１、第２センサ押圧部３
２、３３の各下端面が鍵２の中心側に向けて次第に下方
に突出する傾斜状の湾曲面３２ａ、３３ａに形成されて
いるので、押圧された箇所の感圧シート２０は、第１、
第２接点部２２、２３における白鍵２ａの中心側にそれ
ぞれ異なる接触面積で強く押し付けられる。このため、
特に第２センサ押圧部３３によって押圧された箇所の感
圧シート２０は、第２接点部２３ににその左端寄りに強
く押し付けられることがないので、白鍵２ａが左下がり
に傾いても、その左側に隣接する黒鍵２ｂの右端部に対
応する第１接点部２２に感圧シート２０が接触しないよ
うにすることができる。The white key 2 located on the right side in FIG.
a, when the white key 2a is twisted and pressed, for example, in a state of being tilted to the left, the sensor pressing portion 30a
The second sensor pressing portion 33 on the left side of FIG.
Although the contact portion 23 is strongly pressed to make contact with a large contact area, the first sensor pressing portion 32 on the right side does not strongly press the pressure-sensitive sheet 20 against the first contact portion 22, and thus makes contact with a small contact area. Also at this time, the first and second sensor pressing portions 3
Since the lower end surfaces of the pressure-sensitive sheets 20 and 33 are formed on the inclined curved surfaces 32 a and 33 a that gradually project downward toward the center of the key 2, the pressure-sensitive sheet 20 at the pressed position is the first and the second.
The second contact portions 22, 23 are strongly pressed against the center side of the white key 2a with different contact areas. For this reason,
In particular, since the pressure-sensitive sheet 20 at the position pressed by the second sensor pressing portion 33 is not strongly pressed toward the second contact portion 23 toward the left end thereof, even if the white key 2a is tilted to the left, The pressure-sensitive sheet 20 can be prevented from contacting the first contact portion 22 corresponding to the right end of the black key 2b adjacent to the left side.
【００２１】このように、この鍵盤装置によれば、各鍵
２が押鍵されて感圧センサ４を押圧するときに、各鍵２
が捩じれて左右に傾いても、各鍵２のセンサ押圧部３０
により感圧センサ４の第１、第２接点部２２、２３に対
応する箇所を確実に押圧することができると共に、押圧
された箇所の感圧シート２０が隣接する鍵２に対応する
第１、第２接点部２２、２３に接触しないようにするこ
とができるので、押鍵された鍵２によって隣接する鍵２
に対応する箇所の感圧センサ４が影響を受けないように
することができ、このため正確なアフタータッチデータ
を得ることができ、これにより発音中の音に各種の効果
を良好に付与することができ、より一層、音の表現力を
高めることができる。この場合、センサ押圧部３０は、
感圧センサ４の第１接点部２２と第２接点部２３との間
に対応する中間部分に切欠部３１が設けられているの
で、各鍵２に対応する第１接点部２２と第２接点部２３
との間隔が狭くても、その第１、第２接点部２２、２３
間に対応する箇所の感圧シート２０が切欠部３１によっ
て押し下げられることがないため、押鍵された鍵２の左
右方向の押鍵力を正確に検出することができる。As described above, according to this keyboard device, when each key 2 is pressed and the pressure sensor 4 is pressed, each key 2
The sensor pressing portion 30 of each key 2 is
Thus, the portions corresponding to the first and second contact portions 22 and 23 of the pressure-sensitive sensor 4 can be reliably pressed, and the pressure-sensitive sheet 20 at the pressed portion corresponds to the first and second keys 2 and 3 corresponding to the adjacent key 2. Since the second contact portions 22 and 23 can be prevented from contacting with each other, the adjacent key 2
Can be prevented from being affected by the pressure-sensitive sensor 4 at the position corresponding to the sound, and thus accurate after-touch data can be obtained. Can be further enhanced. In this case, the sensor pressing unit 30
Since the notch 31 is provided at an intermediate portion between the first contact portion 22 and the second contact portion 23 of the pressure-sensitive sensor 4, the first contact portion 22 corresponding to each key 2 and the second contact portion are provided. Part 23
, The first and second contact portions 22, 23
Since the pressure-sensitive sheet 20 at the corresponding position is not pressed down by the cutout portion 31, the key pressing force of the pressed key 2 in the left-right direction can be accurately detected.
【００２２】なお、上記第１実施形態では、第１、第２
センサ押圧部３２、３３の各下端面を鍵２の中心側に向
けて次第に下方に突出する傾斜状の湾曲面３２ａ、３３
ａに形成した場合について述べたが、これに限らず、例
えば図５において左側に位置する白鍵２ａのように、第
１、第２センサ押圧部３２、３３の各下端面を鍵２の中
心側に向けて次第に下方に突出する直線状の傾斜面３２
ｂ、３３ｂに形成しても良い。また、上記第１実施形態
では、鍵２のセンサ押圧部３０の中間部分に切欠部３１
を形成したが、これに限らず、例えば図５において中間
に位置する黒鍵２ｂのセンサ押圧部３４のように、必ず
しも切欠部を設ける必要はない。この場合にも、センサ
押圧部３４の下端面を鍵２の中心側に向けて次第に下方
に突出する湾曲状または直線状の傾斜面３４ａに形成さ
れている。In the first embodiment, the first and second
Inclined curved surfaces 32 a, 33 gradually projecting downward from the lower end surfaces of the sensor pressing portions 32, 33 toward the center of the key 2.
a, the lower end surfaces of the first and second sensor pressing portions 32 and 33 are positioned at the center of the key 2 like a white key 2a located on the left side in FIG. Linear inclined surface 32 that gradually projects downward toward the side
b, 33b. In the first embodiment, the notch 31 is provided in the middle of the sensor pressing portion 30 of the key 2.
However, the present invention is not limited to this. For example, it is not always necessary to provide a notch as in the sensor pressing portion 34 of the black key 2b located in the middle in FIG. Also in this case, the sensor pressing portion 34 is formed as a curved or linear inclined surface 34 a that gradually projects downward toward the center of the key 2.
【００２３】さらに、上記第１実施形態では、図２に示
すように、センサ押圧部３０の第１、第２センサ押圧部
３２、３３を鍵２の配列方向に沿って一直線状に配列さ
せた場合について述べたが、これに限らず、例えば図６
に示すセンサ押圧部３５のように、第１センサ押圧部３
２と第２センサ押圧部３３とを各鍵２にそれぞれ互い違
いに設け、この状態で第１、第２センサ押圧部３２、３
３を鍵２の配列方向に沿って千鳥状に配列させた構造で
も良い。このような配列のセンサ押圧部３５によれば、
各鍵２に対応する第１接点部２２と第２接点部２３との
間隔が狭くても、押鍵時に第１、第２センサ押圧部３
２、３３によって押圧された箇所の感圧シート２０がこ
れに対応する第１、第２接点部２２、２３に跨って接触
するのを大幅に軽減することができるので、押鍵された
鍵２の左右方向の押鍵力を、より一層、正確に検出する
ことができる。Further, in the first embodiment, as shown in FIG. 2, the first and second sensor pressing portions 32 and 33 of the sensor pressing portion 30 are arranged in a straight line along the key 2 arrangement direction. Although the case has been described, the present invention is not limited to this. For example, FIG.
As shown in a sensor pressing portion 35 shown in FIG.
2 and the second sensor pressing portions 33 are provided alternately on the respective keys 2, and in this state, the first and second sensor pressing portions 32, 3
A structure in which the keys 3 are arranged in a staggered manner along the key 2 arrangement direction may be used. According to the sensor pressing portion 35 having such an arrangement,
Even if the distance between the first contact portion 22 and the second contact portion 23 corresponding to each key 2 is small, the first and second sensor pressing portions 3 are pressed when the key is pressed.
Since the pressure-sensitive sheet 20 at the position pressed by the keys 2 and 33 can be greatly reduced from coming into contact with the corresponding first and second contact portions 22 and 23, the pressed key 2 Can be more accurately detected.
【００２４】［第２実施形態］次に、図７を参照して、
この発明の鍵盤装置の第２実施形態について説明する。
この場合には、図１〜図４に示された第１実施形態と同
一部分に同一符号を付して説明する。この鍵盤装置は、
感圧センサ４の第１、第２電極３６、３７の構造が第１
実施形態と異なり、これ以外は第１実施形態とほぼ同じ
構造になっている。すなわち、感圧センサ４の第１電極
３６は、鍵２の配列方向に沿ってライン状に設けられ、
その所定箇所に第１接点部３８が鍵２ごとに互い違いに
異なる方向に突出して設けられている。例えば、図７に
示すように、白鍵２ａに対応する第１接点部３８は、白
鍵２ａの後側（同図では上側）に向けて突出し、かつ白
鍵２ａの右端部に対応して設けられている。また、白鍵
２ａに隣接する黒鍵２ｂに対応する第１接点部３８は、
黒鍵２ｂの前側（同図では下側）に向けて突出し、かつ
黒鍵２ｂの右端部に対応して設けられている。[Second Embodiment] Next, referring to FIG.
A second embodiment of the keyboard device of the present invention will be described.
In this case, the same parts as those in the first embodiment shown in FIGS. This keyboard device
The structure of the first and second electrodes 36 and 37 of the pressure-sensitive sensor 4 is the first
Other than this, the structure is almost the same as that of the first embodiment. That is, the first electrode 36 of the pressure-sensitive sensor 4 is provided in a line along the arrangement direction of the keys 2,
A first contact portion 38 is provided at a predetermined location for each key 2 so as to protrude alternately in different directions. For example, as shown in FIG. 7, the first contact portion 38 corresponding to the white key 2a protrudes toward the rear side (the upper side in FIG. 7) of the white key 2a and corresponds to the right end of the white key 2a. Is provided. The first contact portion 38 corresponding to the black key 2b adjacent to the white key 2a is
The black key 2b protrudes toward the front side (the lower side in the figure) and is provided corresponding to the right end of the black key 2b.
【００２５】第２電極３７は、鍵２の長手方向における
第１電極３６の前後両側にそれぞれ第１電極３８と平行
なライン状に設けられ、その両者の所定箇所に第２接点
部３９が第１電極３６に向けて突出し、かつ各第１接点
部３８に対向した状態で設けられている。例えば、図７
に示すように、前後２つの第２電極３７のうち、第１電
極３６よりも鍵２の後側（同図では上側）に位置する第
２電極３７には、第２接点部３９が鍵２の前側（同図で
は下側）に向けて突出し、かつ白鍵２ａに対応する第１
接点部３８と平行に白鍵２ａの左端部に対応して設けら
れている。また、第１電極３６によりも鍵２の前側（同
図では下側）に位置する第２電極３７には、第２接点部
３９が鍵２の後側（同図では上側）に向けて突出し、か
つ黒鍵２ｂに対応する第１接点部３８と平行に黒鍵２ｂ
の左端部に対応して設けられている。なお、これら２つ
の第２電極３７は、鍵２の配列方向における一方の端部
同士が電気的に接続され、これにより実質的に１つの第
２電極３７に構成されている。The second electrodes 37 are provided on the front and rear sides of the first electrode 36 in the longitudinal direction of the key 2 in a line parallel to the first electrode 38, respectively. It is provided so as to protrude toward one electrode 36 and face each first contact portion 38. For example, FIG.
As shown in FIG. 5, the second contact portion 39 is provided with the key 2 on the second electrode 37 located on the rear side (upper side in FIG. 2) of the key 2 with respect to the first electrode 36 of the two front and rear second electrodes 37. Of the first key corresponding to the white key 2a.
The white key 2a is provided in parallel with the contact portion 38 so as to correspond to the left end of the white key 2a. Further, a second contact portion 39 protrudes toward the rear side (upper side in the figure) of the key 2 from the second electrode 37 located on the front side (lower side in the figure) of the key 2 than the first electrode 36. And the black key 2b in parallel with the first contact portion 38 corresponding to the black key 2b.
Is provided corresponding to the left end of the. One end of each of the two second electrodes 37 in the direction in which the keys 2 are arranged is electrically connected to each other, thereby forming substantially one second electrode 37.
【００２６】この場合、各鍵２ごとに互いに対向し合う
第１、第２接点部３８、３９は、図７に示すように、鍵
２の配列方向に沿って千鳥状に配列されている。また、
各鍵２のセンサ押圧部３０は、第１実施形態と同様、感
圧センサ４の第１接点部３８に対応する第１センサ押圧
部３２と第２接点部３９に対応する第２センサ押圧部３
３とからなり、これら第１、第２センサ押圧部３２、３
３が各鍵２ごとに互いに対向して設けられ、この状態で
鍵２の配列方向に沿って千鳥状に配列されている。すな
わち、図７に示すように、白鍵２ａのセンサ押圧部３０
は、白鍵２ａごとに対向し合う第１、第２接点部３８、
３９に対応し、第１電極３６よりも鍵２の後側（同図で
は上側）に位置している。また、黒鍵２ｂのセンサ押圧
部３０は、黒鍵２ｂごとに対向し合う第１、第２接点部
３８、３９に対応し、第１電極３６よりも鍵２の前側
（同図では下側）に位置している。これにより、各セン
サ押圧部３０は、鍵２の配列方向に沿って千鳥状に配列
されている。In this case, the first and second contact portions 38 and 39 facing each other for each key 2 are arranged in a staggered manner along the arrangement direction of the keys 2 as shown in FIG. Also,
The sensor pressing portion 30 of each key 2 has a first sensor pressing portion 32 corresponding to the first contact portion 38 of the pressure-sensitive sensor 4 and a second sensor pressing portion corresponding to the second contact portion 39, as in the first embodiment. 3
The first and second sensor pressing portions 32, 3
The keys 3 are provided so as to face each other, and are arranged in a staggered manner along the arrangement direction of the keys 2 in this state. That is, as shown in FIG. 7, the sensor pressing portion 30 of the white key 2a
Are the first and second contact portions 38 facing each other for each white key 2a,
It corresponds to the key 39 and is located on the rear side (the upper side in the figure) of the key 2 with respect to the first electrode 36. The sensor pressing portion 30 of the black key 2b corresponds to the first and second contact portions 38 and 39 facing each other for each black key 2b, and is located on the front side of the key 2 (the lower side in FIG. ) Is located. Thereby, the sensor pressing portions 30 are arranged in a staggered manner along the arrangement direction of the keys 2.
【００２７】このような鍵盤装置では、押鍵された鍵２
が感圧センサ４を押圧するときに、センサ押圧部３０の
第１、第２センサ押圧部３２、３３が感圧センサ４の第
１、第２接点部３８、３９に対応する箇所をそれぞれ押
圧するので、第１実施形態と同様の作用効果があるほ
か、特に感圧センサ４の第１、第２接点部３８、３９が
各鍵２ごとに対向して設けられ、かつこの状態で鍵２の
配列方向に沿って千鳥状に配列されているので、各鍵２
に対応する第１、第２接点部３８、３９が、隣接する鍵
２に対応する第１、第２接点部３８、３９に接近しない
ため、第１実施形態の場合よりも、押鍵された鍵２によ
って隣接する鍵２に対応する箇所の感圧センサ４が影響
を受けないようにすることができ、このため、より一
層、正確なアフタータッチデータを得ることができる。In such a keyboard device, the depressed key 2
When pressing the pressure-sensitive sensor 4, the first and second sensor pressing portions 32 and 33 of the sensor pressing portion 30 press the portions corresponding to the first and second contact portions 38 and 39 of the pressure-sensitive sensor 4, respectively. Therefore, in addition to the same operation and effect as in the first embodiment, the first and second contact portions 38 and 39 of the pressure-sensitive sensor 4 are particularly provided to face each key 2 and, in this state, the key 2 Are arranged in a zigzag pattern along the arrangement direction of
Are not approached to the first and second contact portions 38 and 39 corresponding to the adjacent key 2, so that the key is pressed more than in the first embodiment. The pressure-sensitive sensor 4 at a location corresponding to the adjacent key 2 can be prevented from being affected by the key 2, and therefore, more accurate aftertouch data can be obtained.
【００２８】［第３実施形態］次に、図８および図９を
参照して、この発明の鍵盤装置の第３実施形態について
説明する。この場合にも、図１〜図４に示された第１実
施形態と同一部分には同一符号を付して説明する。この
鍵盤装置は、感圧センサ４０の構造が第１実施形態と異
なり、これ以外は第１実施形態とほぼ同じ構造になって
いる。この感圧センサ４０は、互いに隣接する各鍵２の
間、例えば白鍵２ａと黒鍵２ｂとの間に対応する箇所に
隔壁部４１がそれぞれ設けられた構造になっている。す
なわち、隔壁部４１は、例えば、図８および図９に示す
ように、黒鍵２ｂの左端部に対応する第２接点部２３
と、その左側に隣接する白鍵２ａの右端部に対応する第
１接点部２２との間、および黒鍵２ｂの右端部に対応す
る第１接点部２２と、その右側に隣接する白鍵２ａの左
端部に対応する第２接点部２３との間に設けられてい
る。この場合、各隔壁部４１は、それぞれ剛性が高く、
押鍵された鍵２によって変形しないものであり、図９に
示すように、センサ基板１６と感圧シート２０との間に
スペーサ１９の高さとほぼ同じ高さで設けられている。[Third Embodiment] Next, a third embodiment of the keyboard device of the present invention will be described with reference to FIGS. Also in this case, the same parts as those of the first embodiment shown in FIGS. This keyboard device differs from the first embodiment in the structure of the pressure-sensitive sensor 40, and has almost the same structure as the first embodiment except for this. The pressure-sensitive sensor 40 has a structure in which partition walls 41 are respectively provided between the keys 2 adjacent to each other, for example, between the white keys 2a and the black keys 2b. That is, for example, as shown in FIGS. 8 and 9, the partition 41 is provided with the second contact 23 corresponding to the left end of the black key 2 b.
And the first contact portion 22 corresponding to the right end of the white key 2a adjacent to the left side thereof, and the first contact portion 22 corresponding to the right end of the black key 2b, and the white key 2a adjacent to the right side thereof. And the second contact portion 23 corresponding to the left end of the second contact portion. In this case, each partition 41 has high rigidity,
It is not deformed by the depressed key 2, and is provided between the sensor substrate 16 and the pressure-sensitive sheet 20 at substantially the same height as the spacer 19, as shown in FIG.
【００２９】このような鍵盤装置では、押鍵された鍵２
が感圧センサ４を押圧するときに、第１実施形態と同
様、センサ押圧部３０の第１、第２センサ押圧部３２、
３３が感圧センサ４の第１、第２接点部２２、２３に対
応する箇所をそれぞれ押圧するが、このときには、互い
に隣接する各鍵２の間に対応する箇所、つまり各鍵２の
互いに隣接する各端部間に対応する第１、第２接点部２
２、２３間に隔壁部４１が設けられていることにより、
押鍵された鍵２に対応する箇所の感圧シート２０が押圧
されても、これに隣接する鍵２に対応する箇所の感圧シ
ート２０が隔壁部４１で支持されるので、押鍵された鍵
２が捩じれて左右に傾いても、押圧された鍵２によって
隣接する鍵２に対応する第１、第２接点部２２、２３に
感圧シート２０が接触するのを確実に防ぐことができ
る。このため、押鍵された鍵２によって隣接する鍵２に
対応する箇所の感圧センサ４がまったく影響を受けない
ようにすることができる。In such a keyboard device, the depressed key 2
When pressing the pressure-sensitive sensor 4, the first and second sensor pressing portions 32 of the sensor pressing portion 30, as in the first embodiment,
33 presses the portions corresponding to the first and second contact portions 22 and 23 of the pressure-sensitive sensor 4 respectively. At this time, the portions corresponding to the portions between the keys 2 adjacent to each other, that is, the portions of the keys 2 adjacent to each other are pressed. First and second contact portions 2 corresponding between the respective end portions
Since the partition 41 is provided between 2 and 23,
Even if the pressure-sensitive sheet 20 at the position corresponding to the pressed key 2 is pressed, the pressure-sensitive sheet 20 at the position corresponding to the key 2 adjacent to the key 2 is supported by the partition wall 41, so that the key is pressed. Even if the key 2 is twisted and inclined left and right, the pressed key 2 can reliably prevent the pressure-sensitive sheet 20 from contacting the first and second contact portions 22 and 23 corresponding to the adjacent key 2. . Therefore, the pressure-sensitive sensor 4 at a location corresponding to the adjacent key 2 can be prevented from being affected by the pressed key 2 at all.
【００３０】[0030]
【発明の効果】以上説明したように、この発明によれ
ば、押鍵された鍵が感圧センサを押圧するときに、鍵に
設けられたセンサ押圧部が感圧センサの第１接点部と第
２接点部とに対応する箇所をそれぞれ押圧すると共に、
押鍵された鍵が捩じれて鍵の配列方向に傾いても、その
センサ押圧部の下端面が鍵の中心側に向けて次第に下方
に突出する傾斜状に形成されていることにより、センサ
押圧部が鍵の中心側に位置する感圧シートを強く押し下
げて第１、第２接点部に接触させるが、鍵の端部側に位
置する感圧シートを強く押し下げることがないため、押
鍵された鍵によって隣接する鍵に対応する第１、第２接
点部に感圧シートが接触しないようにすることができ、
これにより押鍵された鍵によって隣接する鍵に対応する
箇所の感圧センサが受ける影響を軽減することができ、
これにより正確なアフタータッチデータを得ることがで
きる。As described above, according to the present invention, when the pressed key presses the pressure-sensitive sensor, the sensor pressing portion provided on the key is in contact with the first contact portion of the pressure-sensitive sensor. While pressing the portions corresponding to the second contact portion, respectively,
Even if the depressed key is twisted and tilted in the key arrangement direction, the lower end surface of the sensor pressing portion is formed so as to be gradually inclined downward toward the center of the key. Presses down the pressure-sensitive sheet located on the center side of the key to make contact with the first and second contact portions, but does not strongly press down the pressure-sensitive sheet located on the end side of the key. The key can prevent the pressure-sensitive sheet from contacting the first and second contact portions corresponding to the adjacent keys,
As a result, it is possible to reduce the influence of the pressed key on the pressure-sensitive sensor at the position corresponding to the adjacent key,
As a result, accurate aftertouch data can be obtained.
【００３１】この場合、センサ押圧部は、第１接点部と
第２接点部との間に対応する中間部分に切欠部が設けら
れ、この切欠部によって第１接点部に対応する第１セン
サ押圧部と第２接点部に対応する第２センサ押圧部とに
分割されていることにより、各鍵に対応する第１接点部
と第２接点部との間隔が狭くても、その第１、第２接点
部間に対応する箇所の感圧シートが切欠部によって押し
下げられることがないため、押鍵された鍵が捩じれて傾
いても、鍵の配列方向における各鍵の左右方向の押鍵力
を正確に検出することができる。特に、センサ押圧部
は、第１センサ押圧部と第２センサ押圧部とが各鍵にそ
れぞれ互い違いに設けられ、この状態で第１、第２セン
サ押圧部が鍵の配列方向に沿って千鳥状に配列されてい
れば、各鍵に対応する第１接点部と第２接点部との間隔
が狭くても、押鍵時に第１、第２センサ押圧部によって
押圧された箇所の感圧シートがこれに対応する第１、第
２接点部に跨って接触するのを大幅に軽減することがで
きるので、押鍵された鍵の左右方向の押鍵力を、より一
層、正確に検出することができる。In this case, the sensor pressing portion is provided with a notch at an intermediate portion corresponding to between the first contact portion and the second contact portion, and the first sensor pressing portion corresponding to the first contact portion is formed by the notch. Is divided into the first and second contact portions corresponding to the keys, even if the distance between the first contact portion and the second contact portion corresponding to each key is narrow, Since the pressure-sensitive sheet corresponding to the portion between the two contact portions is not pushed down by the notch portion, even if the pressed key is twisted and tilted, the key pressing force of each key in the left and right direction in the key arrangement direction is reduced. It can be detected accurately. In particular, in the sensor pressing portion, the first sensor pressing portion and the second sensor pressing portion are provided alternately for each key, and in this state, the first and second sensor pressing portions are staggered along the key arrangement direction. If the distance between the first contact portion and the second contact portion corresponding to each key is small, the pressure-sensitive sheet at the position pressed by the first and second sensor pressing portions at the time of key pressing is arranged. Since the contact between the first and second contact portions corresponding to this can be greatly reduced, it is possible to more accurately detect the left-right pressing force of the pressed key. it can.
【００３２】また、第１電極は、第１接点部が各鍵ごと
に互い違いに異なる方向に突出して設けられ、第２電極
は、各鍵の長手方向における第１電極の前後両側に設け
られ、かつ第２接点部がそれぞれ第１電極に向けて突出
して第１接点部に対向した状態で設けられ、センサ押圧
部は、各鍵ごとに互いに対向し合う第１、第２接点部に
対応して設けられ、これにより鍵の配列方向に沿って千
鳥状に配列されていることにより、各鍵に対応する第
１、第２接点部が隣接する鍵に対応する第１、第２接点
部に接近しないため、押鍵された鍵によって隣接する鍵
に対応する箇所の感圧センサが、より一層、影響を受け
ないようにすることができる。さらに、感圧センサは、
互いに隣接する鍵の間に対応する第１、第２接点部間に
隔壁部が設けられていることにより、押鍵された鍵が捩
じれて傾いても、これに隣接する鍵に対応する箇所の感
圧シートを隔壁部によって支持することができるので、
押鍵された鍵によって隣接する鍵に対応する第１、第２
接点部に感圧シートが接触するのを確実に防ぐことがで
きる。The first electrode is provided with first contact portions protruding alternately in different directions for each key, and the second electrodes are provided on both front and rear sides of the first electrode in the longitudinal direction of each key. In addition, the second contact portions are provided so as to protrude toward the first electrode and face the first contact portion, and the sensor pressing portions correspond to the first and second contact portions facing each other for each key. The first and second contact portions corresponding to the respective keys are arranged in a staggered manner along the key arrangement direction, so that the first and second contact portions corresponding to the adjacent keys are provided. Since the keys do not approach each other, the pressure-sensitive sensor at the position corresponding to the adjacent key can be further prevented from being affected by the pressed key. In addition, the pressure sensor
Since the partition wall is provided between the first and second contact portions corresponding to between the adjacent keys, even if the pressed key is twisted and tilted, the portion corresponding to the key adjacent to this key is twisted and inclined. Since the pressure-sensitive sheet can be supported by the partition,
First and second keys corresponding to adjacent keys by a pressed key
The contact of the pressure-sensitive sheet with the contact portion can be reliably prevented.
【図１】この発明の鍵盤装置の第１実施形態における各
鍵のセンサ押圧部の配列状態を示した要部の平面図。FIG. 1 is a plan view of an essential part showing an arrangement state of a sensor pressing portion of each key in a keyboard device according to a first embodiment of the present invention.
【図２】図１のＡ−Ａ矢視における各鍵および感圧セン
サの要部を示した拡大断面図。FIG. 2 is an enlarged cross-sectional view showing each key and a main part of a pressure-sensitive sensor as viewed in the direction of arrows AA in FIG. 1;
【図３】図１に示されたセンサ押圧部の配列状態に対す
る感圧センサの第１、第２電極の対応状態を示した平面
図。FIG. 3 is a plan view showing a state in which first and second electrodes of the pressure-sensitive sensor correspond to an arrangement state of the sensor pressing portions shown in FIG. 1;
【図４】図２の状態の各鍵を押鍵したときの感圧センサ
の動作状態を示した要部の拡大断面図。FIG. 4 is an enlarged sectional view of a main part showing an operation state of the pressure-sensitive sensor when each key in the state of FIG. 2 is pressed.
【図５】第１実施形態と異なる形状の各センサ押圧部を
示した各鍵の拡大断面図。FIG. 5 is an enlarged sectional view of each key showing each sensor pressing portion having a shape different from that of the first embodiment.
【図６】第１実施形態と異なる構造および配列状態のセ
ンサ押圧部を示した平面図。FIG. 6 is a plan view showing a sensor pressing portion having a structure and an arrangement different from those of the first embodiment.
【図７】この発明の鍵盤装置の第２実施形態における各
鍵に対する感圧センサの第１、第２電極および各センサ
押圧部の対応状態を示した平面図。FIG. 7 is a plan view showing a corresponding state of first and second electrodes of a pressure-sensitive sensor and each sensor pressing portion for each key in a second embodiment of the keyboard device of the present invention.
【図８】この発明の鍵盤装置の第３実施形態における各
鍵に対する感圧センサおよび各センサ押圧部の対応状態
を示した平面図。FIG. 8 is a plan view showing a corresponding state of a pressure-sensitive sensor and each sensor pressing portion for each key in a keyboard device according to a third embodiment of the present invention.
【図９】図８のＢ−Ｂ矢視における各鍵および感圧セン
サの要部を示した拡大断面図。FIG. 9 is an enlarged cross-sectional view showing each key and a main part of the pressure-sensitive sensor as viewed in the direction of arrows BB in FIG. 8;
【図１０】鍵盤装置の平面図。FIG. 10 is a plan view of the keyboard device.
【図１１】図１０のＣ−Ｃ矢視における拡大断面図。11 is an enlarged cross-sectional view taken along the line CC in FIG.
【図１２】図１１の鍵を押鍵した状態の概略断面図。FIG. 12 is a schematic cross-sectional view showing a state where the key in FIG. 11 is depressed.
【図１３】従来の鍵盤装置において各鍵に対する感圧セ
ンサの第１、第２電極の対応状態を示した平面図。FIG. 13 is a plan view showing a corresponding state of first and second electrodes of a pressure-sensitive sensor for each key in a conventional keyboard device.
【図１４】図１３に示された従来の鍵盤装置の要部の断
面を示し、（ａ）はＤ−Ｄ矢視における感圧センサの拡
大断面図、（ｂ）はＥ−Ｅ矢視における各鍵および感圧
センサの要部を示した拡大断面図。14A and 14B are cross-sectional views of main parts of the conventional keyboard device shown in FIG. 13, wherein FIG. 14A is an enlarged cross-sectional view of the pressure-sensitive sensor as viewed in the direction of an arrow D-D, and FIG. FIG. 2 is an enlarged cross-sectional view showing a key and a main part of a pressure-sensitive sensor.
【図１５】図１４（ｂ）の状態の各鍵を押鍵したときの
感圧センサの動作状態を示した拡大断面図。FIG. 15 is an enlarged sectional view showing an operation state of the pressure-sensitive sensor when each key in the state of FIG. 14B is pressed.
１ 鍵盤シャーシ ２ 鍵 ３ スイッチ部材 ４ 感圧センサ １７、３６ 第１電極 ２２、３８ 第１接点部 １８、３７ 第２電極 ２３、３９ 第２接点部 ２０、４０ 感圧シート ３０、３４、３５ センサ押圧部 ３１ 切欠部 ３２ 第１センサ押圧部 ３３ 第２センサ押圧部 ３２ａ、３３ａ 湾曲面 ３２ｂ、３３ｂ、３４ａ 傾斜面 ４１ 隔壁部 DESCRIPTION OF SYMBOLS 1 Keyboard chassis 2 Key 3 Switch member 4 Pressure sensor 17, 36 First electrode 22, 38 First contact portion 18, 37 Second electrode 23, 39 Second contact portion 20, 40 Pressure sensitive sheet 30, 34, 35 Sensor Pressing part 31 Notch part 32 First sensor pressing part 33 Second sensor pressing part 32a, 33a Curved surface 32b, 33b, 34a Inclined surface 41 Partition part
Claims (6)
下方向に回動可能に設けられた複数の鍵と、前記鍵盤シ
ャーシ上に前記鍵の配列方向に沿って配置され、押鍵さ
れた前記鍵の押し込み力を検出する感圧センサとを備
え、この感圧センサで検出した検出信号に基づいて発音
中の音に効果を付与する鍵盤装置において、 前記感圧センサは、前記鍵の配列方向における前記鍵の
各一端部の下側にそれぞれ対応する複数の第１接点部を
有する第１電極と、前記鍵の各他端部の下側にそれぞれ
対応する複数の第２接点部を有する第２電極と、前記鍵
の押鍵操作に応じて前記第１、第２接点部に接離可能に
接触する感圧シートとを備え、 前記鍵には、それぞれ前記感圧センサの前記第１、第２
接点部に対応する箇所を押圧するセンサ押圧部が設けら
れ、このセンサ押圧部の下端面は、前記鍵の中心側に向
けて次第に下方に突出する傾斜状に形成されていること
を特徴とする鍵盤装置。1. A keyboard chassis, a plurality of keys provided on the keyboard chassis so as to be rotatable in a vertical direction, and the key pressed and arranged on the keyboard chassis along a direction in which the keys are arranged. A keyboard device that includes a pressure-sensitive sensor that detects a pressing force of a key, and that gives an effect to a sound being generated based on a detection signal detected by the pressure-sensitive sensor. A first electrode having a plurality of first contact portions respectively corresponding to a lower side of each end of the key, and a second electrode having a plurality of second contact portions respectively corresponding to a lower side of each other end of the key. A pressure-sensitive sheet that comes into contact with the first and second contact portions in a detachable manner in accordance with a key pressing operation of the key; Second
A sensor pressing portion for pressing a portion corresponding to the contact portion is provided, and a lower end surface of the sensor pressing portion is formed to be inclined so as to gradually protrude downward toward the center side of the key. Keyboard device.
記第２接点部との間に対応する中間部分に切欠部が設け
られ、この切欠部によって前記第１接点部に対応する第
１センサ押圧部と前記第２接点部に対応する第２センサ
押圧部とに分割されていることを特徴とする請求項１に
記載の鍵盤装置。2. The sensor pressing portion has a notch at an intermediate portion corresponding to a position between the first contact and the second contact, and a notch corresponding to the first contact is formed by the notch. The keyboard device according to claim 1, wherein the keyboard device is divided into one sensor pressing portion and a second sensor pressing portion corresponding to the second contact portion.
沿って一直線状に配列されていることを特徴とする請求
項１または２に記載の鍵盤装置。3. The keyboard device according to claim 1, wherein the sensor pressing portions are arranged in a straight line along the arrangement direction of the keys.
部と前記第２センサ押圧部とが前記鍵にそれぞれ互い違
いに設けられ、この状態で前記第１、第２センサ押圧部
が前記鍵の配列方向に沿って千鳥状に配列されているこ
とを特徴とする請求項２に記載の鍵盤装置。4. The sensor pressing portion, wherein the first sensor pressing portion and the second sensor pressing portion are provided alternately on the key, and in this state, the first and second sensor pressing portions are connected to the key. 3. The keyboard device according to claim 2, wherein the keyboard devices are arranged in a staggered manner along the arrangement direction.
ごとに互い違いに異なる方向に突出して設けられ、 前記第２電極は、前記鍵の長手方向における前記第１電
極の前後両側に設けられ、かつ前記第２接点部がそれぞ
れ前記第１電極に向けて突出して前記第１接点部に対向
した状態で設けられ、 前記センサ押圧部は、前記鍵ごとに互いに対向し合う前
記第１、第２接点部に対応して設けられ、これにより前
記鍵の配列方向に沿って千鳥状に配列されていることを
特徴とする請求項１または２に記載の鍵盤装置。5. The first electrode, wherein the first contact portion is provided so as to alternately protrude in a different direction for each of the keys, and the second electrode is provided on both front and rear sides of the first electrode in a longitudinal direction of the key. And the second contact portions are provided so as to protrude toward the first electrode and face the first contact portion, respectively, and wherein the sensor pressing portions are opposed to each other for each of the keys. The keyboard device according to claim 1, wherein the keyboard devices are provided corresponding to the first and second contact portions, whereby the keys are arranged in a staggered manner along the arrangement direction of the keys.
の間に対応する前記第１、第２接点部間に隔壁部が設け
られていることを特徴とする請求項１〜５のいずれかに
記載の鍵盤装置。6. The pressure-sensitive sensor according to claim 1, wherein a partition wall portion is provided between the first and second contact portions corresponding to between the keys adjacent to each other. Keyboard device according to crab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000179816A JP4207364B2 (en) | 2000-06-15 | 2000-06-15 | Keyboard device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000179816A JP4207364B2 (en) | 2000-06-15 | 2000-06-15 | Keyboard device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001356773A true JP2001356773A (en) | 2001-12-26 |
| JP4207364B2 JP4207364B2 (en) | 2009-01-14 |
Family
ID=18681018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000179816A Expired - Fee Related JP4207364B2 (en) | 2000-06-15 | 2000-06-15 | Keyboard device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4207364B2 (en) |
-
2000
- 2000-06-15 JP JP2000179816A patent/JP4207364B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP4207364B2 (en) | 2009-01-14 |
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