JP2003323178A - Key depression detection apparatus for keyboard instrument - Google Patents
Key depression detection apparatus for keyboard instrumentInfo
- Publication number
- JP2003323178A JP2003323178A JP2003052750A JP2003052750A JP2003323178A JP 2003323178 A JP2003323178 A JP 2003323178A JP 2003052750 A JP2003052750 A JP 2003052750A JP 2003052750 A JP2003052750 A JP 2003052750A JP 2003323178 A JP2003323178 A JP 2003323178A
- Authority
- JP
- Japan
- Prior art keywords
- key
- sensor holder
- sensor
- base member
- depression
- 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】本発明は、鍵盤楽器の楽音発
生のために、鍵の押鍵状態を検出する押鍵検出装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key-depression detecting device for detecting a key-depression state of a key in order to generate a musical sound of a keyboard instrument.
【０００２】[0002]
【従来の技術】アコースティックピアノは、弦の振動を
響板に伝えて音響放射を行なう。これに消音機能を持た
せたものは、鍵やこれに連動するハンマ等の動作をセン
サにより検出して、その動作に対応して楽音信号を発す
る。演奏者は、増幅された楽音信号をヘッドホン等によ
り聴くことによって、近隣者に迷惑を掛けることなく演
奏を行なうことができる。2. Description of the Related Art An acoustic piano transmits the vibration of a string to a soundboard to emit sound. The one with a muffling function detects a motion of a key or a hammer interlocked with this with a sensor and emits a musical tone signal corresponding to the motion. By listening to the amplified musical tone signal through headphones or the like, the performer can perform the performance without disturbing the neighbors.
【０００３】アコースティックピアノの内、グランドピ
アノは、中高音では、３本の弦が同音に張弦され、これ
らが１つのハンマで同時に打たれる。そして、ソフトペ
ダルが踏まれると、鍵と連動するアクションが鍵配列方
向に（奏者の左右方向）僅かにずれ、１つのハンマが２
本の弦しか打たなくなり、これにより弱音化が図られ
る。このため、アクションは、ピアノの棚板上の筬（お
さ）の上に支持されている。筏は、鍵と連動するアクシ
ョンを載せる鍵フレームの１種であり、ソフトペダルと
連動して鍵配列方向に往復動する。この動作を円滑にす
べく、筬は、鍵配列方向とこれに直交する方向とに延び
る部材による枠構造をなす。In the grand piano of the acoustic pianos, three strings are stretched to the same tone in the middle and high pitches, and these strings are struck simultaneously by one hammer. When the soft pedal is depressed, the action interlocking with the keys is slightly shifted in the key arrangement direction (the player's left-right direction), and one hammer is 2
Only the strings of a book are struck, which reduces the sound. Therefore, the action is supported on a reed on the piano shelf. A raft is a type of key frame that carries an action that interlocks with a key, and reciprocates in the key array direction in conjunction with a soft pedal. In order to make this operation smooth, the reed has a frame structure with members extending in the key arrangement direction and a direction orthogonal to the key arrangement direction.
【０００４】消音機能を有するグランドピアノでは、例
えば、筬にセンサホルダを固定し、各鍵に設けた板状の
キーシャッタと協働するフォトインタラプタをセンサホ
ルダに取り付けた押鍵検出装置が用いられる。この装置
によると、鍵の動作時にキーシャッタにより遮られて変
化する光量をフォトインタラプタが感知して、鍵の動作
を検出し、これに基づいて楽音信号が発せられる。セン
サホルダは、センサ保持位置を決めるので、鍵配列に正
確に対応して位置決めされなければならず、ピアノ組み
立て工程において、その位置決めを慎重に行なうのに手
間を要していた。特に、筬は、前述のように枠構造を有
しており、センサホルダの取り付け箇所が枠組位置に制
限されるので、筬の枠寸法が異なる毎に異なる取付け孔
の設定や治具が必要であった。In a grand piano having a sound deadening function, for example, a key press detecting device is used in which a sensor holder is fixed to a reed and a photo interrupter which cooperates with a plate-shaped key shutter provided for each key is attached to the sensor holder. . According to this device, the photo interrupter senses the amount of light that is blocked by the key shutter and changes when the key is operated, detects the key operation, and based on this, a tone signal is emitted. Since the sensor holder determines the sensor holding position, it has to be positioned accurately corresponding to the key arrangement, and it has been time-consuming to carefully perform the positioning in the piano assembly process. In particular, the reed has the frame structure as described above, and since the mounting location of the sensor holder is limited to the frame assembly position, it is necessary to set different mounting holes and jigs for different reed frame dimensions. there were.
【０００５】また、既存のグランドピアノに、消音機能
を持たせるために、後から消音機構を取り付けることが
ある。この場合には、各々のピアノの設計仕様に合わせ
た取り付け作業が必要であり、センサホルダの取り付け
に多大の手間を要していた。Further, a sound deadening mechanism may be attached later in order to provide a sound deadening function to an existing grand piano. In this case, it is necessary to carry out the mounting work according to the design specifications of each piano, and it takes a lot of time and labor to mount the sensor holder.
【０００６】アップライトピアノにおいても、消音機能
付きのものは、例えば、棚板（鍵フレーム）上にセンサ
ホルダを固定し、各鍵に設けたキーシャッタと協働する
フォトインタラプタをセンサホルダに取り付けた押鍵検
出装置が用いられる。この場合も、センサホルダは、セ
ンサ保持位置を決めるので、鍵配列に正確に対応して位
置決めされなければならず、ピアノ組み立て工程におい
て、その位置決めに手間を要していた。In an upright piano with a sound deadening function, for example, a sensor holder is fixed on a shelf (key frame), and a photo interrupter which cooperates with a key shutter provided for each key is attached to the sensor holder. A key depression detection device is used. Also in this case, since the sensor holder determines the sensor holding position, the sensor holder must be positioned accurately in correspondence with the key arrangement, and it takes a lot of time to position it in the piano assembly process.
【０００７】また、既存のアップライトピアノに、後か
ら消音機構を取り付ける場合には、各々のピアノの設計
仕様に合わせた取り付け作業が必要であり、センサホル
ダの取り付けに多大の手間を要していた。Further, when a muffling mechanism is to be attached to an existing upright piano later, it is necessary to perform an attaching work in accordance with the design specifications of each piano, which requires a great deal of labor to attach the sensor holder. It was
【０００８】この他、電気的音源を主とする電子鍵盤楽
器においても、鍵フレーム上にセンサホルダを固定し、
各鍵と協働するセンサをセンサホルダに取り付けた押鍵
検出装置が用いられる。この場合も、センサホルダは、
鍵配列に正確に対応して位置決めされなければならず、
組み立て工程において、その位置決めに手間を要してい
た。In addition to this, also in an electronic keyboard musical instrument mainly having an electric sound source, the sensor holder is fixed on the key frame,
A key-depression detecting device in which a sensor that cooperates with each key is attached to a sensor holder is used. Also in this case, the sensor holder
Must be positioned exactly corresponding to the key layout,
In the assembling process, it took a lot of time to position it.
【０００９】[0009]
【発明が解決しようとする課題】本発明は、これら従来
技術の問題を解決し、消音機構のためのセンサホルダの
正確な位置決めを簡便に行なうことができる鍵盤楽器の
押鍵検出装置を提供することを目的とする。SUMMARY OF THE INVENTION The present invention solves these problems of the prior art and provides a key-depression detecting device for a keyboard instrument, which can easily perform accurate positioning of a sensor holder for a sound deadening mechanism. The purpose is to
【００１０】[0010]
【課題を解決するための手段】本発明の前記目的は、鍵
フレームと鍵との間に配置され、鍵の押鍵状態を検出す
る鍵盤楽器の押鍵検出装置であって、各鍵に対応して設
けられ押鍵に伴う鍵の動作状態を検出するキーセンサ
と、配列された鍵を下方から支持する鍵フレームの上に
配置されて鍵配列方向に延び、前記キーセンサを保持す
るセンサホルダと、前記鍵フレームに固定される基部部
材と、該基部部材に装着され前記センサホルダを鍵配列
方向及び鍵長手方向の少なくとも一方に位置調節可能に
結合する取付け部材とを備えたことを特徴とする鍵盤楽
器の押鍵検出装置により達成される。The above object of the present invention is a key press detecting device for a keyboard musical instrument, which is arranged between a key frame and a key and detects the key pressing state, and which corresponds to each key. A key sensor that is provided to detect the operating state of the key accompanying key depression, a sensor holder that is arranged on the key frame that supports the arranged keys from below and extends in the key arrangement direction, and that holds the key sensor. A keyboard comprising: a base member fixed to the key frame; and a mounting member that is mounted on the base member and that couples the sensor holder so that its position can be adjusted in at least one of a key arrangement direction and a key longitudinal direction. This is achieved by the key press detecting device of the musical instrument.
【００１１】[0011]
【作用】本発明によれば、キーセンサを保持するセンサ
ホルダは、基部部材に装着される取付け部材を介して鍵
配列方向及び鍵長手方向の少なくとも一方に位置調節可
能に結合される。したがって、鍵フレームに先ず基部部
材を固定し、これに取付け部材を装着してセンサホルダ
を結合すれば、結合後に鍵配列方向及び／又は鍵長手方
向に位置調節ができる。その結果、ピアノ組立工程にお
いては、組み付けを先ず行ない、その後に微調整を行な
うことができるので、センサホルダの正確な位置決めを
簡便に行なうことができる。また、既存のピアノに消音
機構を取り付ける場合にも、設計仕様に合わせるための
位置調節をセンサホルダの結合構造を利用して行なうこ
とができるので、正確な位置決めを極めて簡便に行なう
ことができる。According to the present invention, the sensor holder holding the key sensor is connected to the base member via the mounting member so as to be positionally adjustable in at least one of the key arrangement direction and the key longitudinal direction. Therefore, if the base member is first fixed to the key frame, the mounting member is attached to the base member, and the sensor holder is coupled, the position can be adjusted in the key arrangement direction and / or the key longitudinal direction after the coupling. As a result, in the piano assembling process, since the assembling can be performed first and the fine adjustment can be performed thereafter, the accurate positioning of the sensor holder can be easily performed. Further, even when the sound deadening mechanism is attached to the existing piano, the position adjustment to match the design specifications can be performed by utilizing the coupling structure of the sensor holder, so that accurate positioning can be performed very easily.
【００１２】前記センサホルダは、キーセンサを保持す
るケース本体と、該ケース本体下端部から鍵長手方向に
広がるように対をなす脚部とを有し、前記取付け部材は
該脚部と結合する構成とすることができる。これによ
り、キーセンサの脚部を利用した構造で、前記押鍵検出
装置を実現することができる。The sensor holder has a case main body for holding the key sensor, and a pair of legs extending from the lower end of the case main body in the longitudinal direction of the key, and the mounting member is connected to the leg. Can be Thus, the key press detecting device can be realized with a structure using the leg portion of the key sensor.
【００１３】前記取付け部材は、対をなす前記脚部より
長く鍵長手方向に延びる下部材と、該下部材の両端部か
ら折り返し部を経て該下部材にほぼ平行に延びる上部材
とを備え、前記センサホルダの脚部をこれら上部材及び
下部材の間に挟持するように構成することができる。こ
れにより、センサホルダの脚部と、取付け部材の上部材
及び下部材とによる簡単な構造で前記押鍵検出装置を実
現することができる。The mounting member includes a lower member extending in the key longitudinal direction longer than the pair of legs, and an upper member extending from both ends of the lower member substantially parallel to the lower member through folded portions. The leg portion of the sensor holder may be sandwiched between the upper member and the lower member. Thus, the key press detecting device can be realized with a simple structure including the leg portion of the sensor holder and the upper and lower members of the mounting member.
【００１４】前記取付け部材はさらに、対をなす前記脚
部を上下から挟持する挟持部を有し、さらに、前記基部
部材と前記挟持部との間の間隔を広げ又は狭める方向に
付勢するばねと、該ばねの付勢力に抗して前記間隔を保
持する調整ねじとを備えた構成とすることができる。こ
れにより、ばねに抗して調整ねじで基部部材と挟持部と
の間隔を調整することができ、キーセンサの高さ及び傾
斜の調整をも簡便に行なうことができる。The mounting member further has a holding portion for holding the pair of legs from above and below, and further, a spring for urging in a direction of widening or narrowing the gap between the base member and the holding portion. And an adjusting screw for holding the distance against the biasing force of the spring. Accordingly, the distance between the base member and the holding portion can be adjusted by the adjusting screw against the spring, and the height and the inclination of the key sensor can be easily adjusted.
【００１５】[0015]
【実施の形態】以下、本発明の実施形態について添付図
面を参照しつつ説明する。説明に用いる図面において
は、同一又は同種の部分に同じ番号を付して説明を省略
することがある。Embodiments of the present invention will be described below with reference to the accompanying drawings. In the drawings used for the description, the same or similar parts may be denoted by the same reference numerals and the description thereof may be omitted.
【００１６】図１は、本発明に係る押鍵検出装置を装着
したグランドピアノの一部を断面で示す側面図である。
押鍵検出装置１は、グランドピアノの棚板Ｂ上の筬Ａ上
において鍵Ｋとの間に設けられる。この例では、筬Ａ
が、配列された鍵を下方から支持する鍵盤フレームに該
当する。押鍵検出装置１から発せられた音響信号は、電
子音源装置Ｓに伝えられ、処理された信号はコントロー
ラＣに送られる。奏者はコントローラＣに接続したヘッ
ドホンＨ等の発音体から楽音を聴くことができる。ま
た、奏者は、コントローラＣを操作することにより、音
量や音色等の調節乃至選択を行なうことができる。FIG. 1 is a side view showing a cross section of a part of a grand piano equipped with a key depression detecting device according to the present invention.
The key depression detecting device 1 is provided between the key K and the reed A on the shelf B of the grand piano. In this example, reed A
Corresponds to the keyboard frame that supports the arranged keys from below. The acoustic signal emitted from the key press detecting device 1 is transmitted to the electronic sound source device S, and the processed signal is sent to the controller C. The player can listen to a musical sound from a sounding body such as headphones H connected to the controller C. In addition, the player can operate the controller C to adjust or select the volume and tone color.
【００１７】図２は、押鍵検出装置１が筬Ａと鍵に取り
付けられた状態を示している。筬Ａ上には、鍵配列方向
に延びるセンサホルダ２が配置されている。センサホル
ダ２は、各鍵に対応した位置にキーセンサ取付け孔２０
を備えている。取付け孔２０には、図５に示すキーセン
サ３が取り付けられる。筬Ａの２本の長手方向部材は、
両端部を筬妻Ａ１、中間部を筬中貫Ａ２で連結されてい
る。これらの筬妻Ａ１及び筬中貫Ａ２に、基部部材４が
取り付けられる。図３は、筬中貫Ａ２に基部部材４が取
り付けられた状態を示している。基部部材４は、取付け
状態において鍵に沿う方向に延びる支持部４０と、支持
部４０の両端から直交して筬中貫Ａ２の上面に延びる固
定部４１とを備え、全体としてほぼＣ字形をなしてい
る。固定部４１は、図３及び図４に示すように、ビス４
２により筬中貫Ａ２に固定される。この例では、支持部
４０が固定部４１より低い位置にあり、両部分の移行部
は、垂直方向にこれらを連結している。このように、支
持部４１を低くすることにより、センサホルダ２の取付
け位置を低くすることができ、筬と鍵との間隙に納めや
すくなる。なお、支持部４０及び固定部４１は、次に述
べる取付け部材を筬（鍵盤フレーム）に支持できれば、
上記以外の種々の形状とすることもできる。基部部材４
は、同様にして、筬妻Ａ１にも取り付けられる。また、
センサホルダがキーセンサを保持する形態としては、上
記のようにセンサホルダ２にキーセンサ３を直接取り付
ける他、両者の間に他の部材を介在させる等、種々の形
態とすることができる。FIG. 2 shows a state in which the key depression detecting device 1 is attached to the reed A and the key. A sensor holder 2 extending in the key arrangement direction is arranged on the reed A. The sensor holder 2 has a key sensor mounting hole 20 at a position corresponding to each key.
Is equipped with. The key sensor 3 shown in FIG. 5 is attached to the attachment hole 20. The two longitudinal members of reed A are
Both ends are connected by a reed girder A1, and the middle part is connected by a reed center penetrating A2. The base member 4 is attached to the reed girder A1 and the reed inner piercing A2. FIG. 3 shows a state in which the base member 4 is attached to the reed center piercing A2. The base member 4 includes a support portion 40 that extends in the direction along the key in the mounted state, and a fixed portion 41 that extends orthogonally from both ends of the support portion 40 to the upper surface of the reed piercing A2, and has a substantially C-shape as a whole. There is. As shown in FIGS. 3 and 4, the fixing portion 41 includes screws 4
It is fixed to the reed center pierce A2 by 2. In this example, the support part 40 is located lower than the fixed part 41, and the transition parts of both parts vertically connect them. In this way, by lowering the support portion 41, the mounting position of the sensor holder 2 can be lowered, and it becomes easy to fit it in the gap between the reed and the key. In addition, the support portion 40 and the fixed portion 41, if the mounting member described below can be supported on the reed (keyboard frame),
It is also possible to have various shapes other than the above. Base member 4
Is similarly attached to the reed wife A1. Also,
As a form in which the sensor holder holds the key sensor, various forms can be adopted such as directly attaching the key sensor 3 to the sensor holder 2 as described above or interposing another member between the two.
【００１８】図４〜図７に示すように、基部部材４の支
持部４０上には、取付け部材５が装着され、取付け部材
５によりセンサホルダ２が取り付けられる。センサホル
ダ２は、キーセンサを保持するケース本体２０と、該ケ
ース本体下端部から鍵長手方向に広がるように対をなす
脚部２１とを有している。取付け部材５は、一対の脚部
２１より長く鍵長手方向に延びる下部材５０と、該下部
材の両端部から折り返し部５１を経て該下部材にほぼ平
行に延びる上部材５２とを備えている。センサホルダの
脚部２１は、これら上部材５２及び下部材５０の間に挟
持される。前述のように、センサホルダ２には、各鍵の
下面に取り付けられるキーシャッタに対応して、鍵と同
じ数のキーセンサ取付け孔２０が設けられている。取付
け孔２０の間隔は、複数並ぶ鍵の間隔と等しい。したが
って、取付け孔２０にキーセンサ３を取り付けるだけ
で、複数のキーセンサ３をキーシャッタに対して容易且
つ正確に位置決めすることができる。As shown in FIGS. 4 to 7, the mounting member 5 is mounted on the supporting portion 40 of the base member 4, and the sensor holder 2 is mounted by the mounting member 5. The sensor holder 2 has a case main body 20 that holds the key sensor, and a pair of legs 21 that extend from the lower end of the case main body in the key longitudinal direction. The mounting member 5 includes a lower member 50 that extends longer than the pair of legs 21 in the key longitudinal direction, and an upper member 52 that extends from both ends of the lower member through the folded-back portions 51 and substantially parallel to the lower member. . The leg portion 21 of the sensor holder is sandwiched between the upper member 52 and the lower member 50. As described above, the sensor holder 2 is provided with the same number of key sensor mounting holes 20 as the keys, corresponding to the key shutters mounted on the lower surface of each key. The interval between the mounting holes 20 is equal to the interval between a plurality of keys arranged side by side. Therefore, only by mounting the key sensor 3 in the mounting hole 20, the plurality of key sensors 3 can be easily and accurately positioned with respect to the key shutter.
【００１９】取付け部材５は、基部部材４の支持部４０
に圧縮コイルばね６０を介し、ビス６１を用いて取り付
けられる。支持部４０及び上部材５２には、ビス６１を
遊嵌する貫通孔が形成され、下部材５０にはビス６１に
螺合するねじ孔が形成されている。したがって、ばね６
０のばね力に抗してビス６１を締め付けることにより、
取付け部材５を支持部４０に接近させることができ、逆
の操作で離反させることができる。これらの操作によ
り、取付け部材５を介してセンサホルダ２の高さ及び傾
斜を調節することできる。The mounting member 5 is a support portion 40 of the base member 4.
It is attached using a screw 61 via a compression coil spring 60. A through hole into which the screw 61 is loosely fitted is formed in the support portion 40 and the upper member 52, and a screw hole into which the screw 61 is screwed is formed in the lower member 50. Therefore, the spring 6
By tightening the screw 61 against the spring force of 0,
The mounting member 5 can be brought close to the support portion 40, and can be separated by the reverse operation. By these operations, the height and inclination of the sensor holder 2 can be adjusted via the mounting member 5.
【００２０】取付け部材５の上部材５２と下部材５０と
の間に挿入されたセンサホルダ２の脚部２１は、ビス６
２により強く挟持され得る。このため、上部材５２に
は、ビス６２を遊嵌する貫通孔が形成され、下部材５０
にはビス６２に螺合するねじ孔が形成されている。ま
た、ビス６２を緩めることにより、センサホルダ２の位
置を鍵配列方向に位置調節することができる。なお、下
部材５０の下面の一部にはプリント基板Ｐを取付けるた
めのフック５３が設けられている（図６）。また、支持
部４０に設けられたビス６１挿通用の孔を鍵長手方向
（鍵配列方向に直交する方向）に長い長孔とすることに
より、センサホルダの位置を鍵長手方向に調節可能とす
ることができる。これにより、消音ピアノにおけるピア
ノ奥行き方向の取付け及び位置調節が容易となる。セン
サホルダの位置を鍵長手方向に調節可能とするには、他
に種々の形態を採用することができ、例えば、取付け部
材５の下部材５０及び上部材５２に設けられたビス６１
用の孔を鍵長手方向に長い長孔とし、ビス６１を上部材
５２の上面でナットにより固定するようにしてもよい。
センサホルダ２に取り付けられた複数のキーセンサ３の
間隔は、キーセンサ取付け孔２０の間隔によって決ま
る。したがって、ビス６２を緩めてセンサホルダ２を移
動しても、キーセンサ３は、その間隔を保ちつつ、セン
サホルダ２と一体的に移動することになる。これによ
り、キーセンサ３を、鍵配列に正確に対応させた位置に
容易に微調整することができる。The leg portion 21 of the sensor holder 2 inserted between the upper member 52 and the lower member 50 of the mounting member 5 has a screw 6
2 can be clamped more strongly. Therefore, the upper member 52 is formed with a through hole into which the screw 62 is loosely fitted, and the lower member 50 is formed.
Is formed with a screw hole that is screwed into the screw 62. Further, by loosening the screw 62, the position of the sensor holder 2 can be adjusted in the key arrangement direction. A hook 53 for mounting the printed circuit board P is provided on a part of the lower surface of the lower member 50 (FIG. 6). Further, the position of the sensor holder can be adjusted in the key lengthwise direction by making the hole for inserting the screw 61 provided in the support portion 40 long in the key lengthwise direction (direction orthogonal to the key arrangement direction). be able to. This facilitates attachment and position adjustment in the piano depth direction in the sound deadening piano. In order to adjust the position of the sensor holder in the longitudinal direction of the key, various other forms can be adopted. For example, screws 61 provided on the lower member 50 and the upper member 52 of the mounting member 5 can be used.
The hole for use may be a long hole in the longitudinal direction of the key, and the screw 61 may be fixed to the upper surface of the upper member 52 with a nut.
The intervals between the plurality of key sensors 3 attached to the sensor holder 2 are determined by the intervals between the key sensor attachment holes 20. Therefore, even if the screw 62 is loosened and the sensor holder 2 is moved, the key sensor 3 is moved integrally with the sensor holder 2 while maintaining the interval. As a result, the key sensor 3 can be easily finely adjusted to a position accurately corresponding to the key arrangement.
【００２１】以上の構成を有する押鍵検出装置１は、次
のようにしてグランドピアノに装着される。先ず、グラ
ンドピアノの筬Ａの筬妻Ａ１及び筬中貫Ａ２の各々に基
部部材４を取り付ける。一方、キーセンサ３を装着した
センサホルダ２には、脚部２１を上部材５２及び下部材
５０の間に挟むようにして取付け部材５を組み付けてお
く。そして、基部部材４の支持部４０上にばね６０を介
在させて取付け部材５をビス６１により固定する。この
とき、センサホルダ２の高さ及び傾斜を適切にするよう
に、ビス６１の螺合の程度を調節する。これは、例え
ば、棚板上の鍵盤アッセンブリを、下方からビス６１の
操作ができる程度手前に引出し、黒鍵を操作しながらそ
のキーシャッタを基準として行なうことができる。この
状態では、まだビス６２を締めていないので、センサホ
ルダ２は取付け部材５に対して自由に移動することがで
きる。したがって、センサホルダ２の位置を鍵配列に対
して正確に調節することができる。その後、ビス６２を
締結してセンサホルダを固定する。このようにして、押
鍵検出装置１は、容易に且つ正確に筬Ａ上に取り付けら
れる。The key-depression detecting device 1 having the above structure is mounted on the grand piano as follows. First, the base member 4 is attached to each of the reed girder A1 and the reed center pierce A2 of the reed A of the grand piano. On the other hand, the mounting member 5 is assembled to the sensor holder 2 having the key sensor 3 mounted thereon such that the leg portion 21 is sandwiched between the upper member 52 and the lower member 50. Then, the mounting member 5 is fixed by screws 61 on the supporting portion 40 of the base member 4 with the spring 60 interposed. At this time, the screwing degree of the screw 61 is adjusted so that the height and the inclination of the sensor holder 2 are appropriate. This can be performed, for example, by pulling out the keyboard assembly on the shelf plate from the lower side to the extent that the screw 61 can be operated and operating the black key while using the key shutter as a reference. In this state, the screw 62 is not yet tightened, so that the sensor holder 2 can freely move with respect to the mounting member 5. Therefore, the position of the sensor holder 2 can be adjusted accurately with respect to the key arrangement. Then, the screw 62 is fastened to fix the sensor holder. In this way, the key-depression detection device 1 can be easily and accurately mounted on the reed A.
【００２２】図８は、本発明に係る押鍵検出装置におけ
るセンサホルダ取付け構造の他の例を示している。この
例では、取付け部材５ａの下部材５０ａと上部材５２ａ
とが分離されている。上部材５２ａの一端はセンサホル
ダ２の脚部２１を押さえる。上部材５２ａの他端は、脚
部２１の厚さ分が肉厚とされ、ビス６２の締結時に水平
状態が保たれるようになっている。この肉厚部は、下部
材に設けてもよいし、両部材から分離したスペーサとし
てもよい。他の構成は、前述の取付け部材５と同じであ
る。この取付け部材５ａを用いた場合は、下部材５０ａ
を基部部材４に取付け、その上にセンサホルダ２を載
せ、その上から上部材５２ａをビス６２で装着して、セ
ンサホルダ２の脚部２１を挟持するという順で組立を行
なうこともできる。FIG. 8 shows another example of the sensor holder mounting structure in the key press detecting device according to the present invention. In this example, the lower member 50a and the upper member 52a of the mounting member 5a are
And are separated. One end of the upper member 52a presses the leg portion 21 of the sensor holder 2. The other end of the upper member 52a has a thickness corresponding to the thickness of the leg portion 21 and is kept horizontal when the screw 62 is fastened. This thick portion may be provided on the lower member or may be a spacer separated from both members. Other configurations are the same as those of the attachment member 5 described above. When this mounting member 5a is used, the lower member 50a
It is also possible to attach the base member 4 to the base member 4, mount the sensor holder 2 on the base member 4, mount the upper member 52a from above with the screw 62, and clamp the leg portion 21 of the sensor holder 2 in this order.
【００２３】図９及び図１０は、本発明に係る押鍵検出
装置におけるセンサホルダ取付け構造のさらに他の例を
示している。この例では、取付け部材５ｂは、下部材５
０ｂのみで構成されている。そして、センサホルダ２ｂ
には、長孔２２ｂが適宜の間隔をおいて設けられてい
る。この構造によれば、取付け部材５ｂを基部部材４に
取付け、その上にセンサホルダ２ｂを載せ、長孔２２ｂ
を利用して、センサホルダ２ｂを鍵配列方向の適切な位
置に調節し、ビス６２を締結して固定する。長孔の位置
を適宜の位置に又は多数設けておくことにより、種々の
寸法の筬への取付けが可能となる。この他、センサホル
ダは前述のような両側の脚部から中央部が***した断面
形状のものに代えて、平板状に形成することもできる。
図１１は、平板状センサホルダの例を示している。この
場合は、図示のように、センサホルダ２ｃと取付け部材
５ｃを構成する下部材５０ｃとの間にスペーサ５４を設
けてキーセンサの収容空間を形成するのが望ましい。図
１１では、右側のスペーサ５４を断面で示している。こ
の例では、ビス６２を通す筒状のスペーサ５４を挿入し
ている。このように、センサホルダは、必要に応じて種
々の形状とすることができる。9 and 10 show still another example of the sensor holder mounting structure in the key press detecting device according to the present invention. In this example, the mounting member 5b is the lower member 5
It is composed of only 0b. And the sensor holder 2b
Slots 22b are provided at appropriate intervals. According to this structure, the attachment member 5b is attached to the base member 4, the sensor holder 2b is placed on the attachment member 5b, and the elongated hole 22b is formed.
Using, the sensor holder 2b is adjusted to an appropriate position in the key arrangement direction, and the screw 62 is fastened and fixed. By providing the long holes at appropriate positions or in a large number, it is possible to attach to the reeds of various sizes. In addition, the sensor holder may be formed in a flat plate shape, instead of the sectional shape in which the central portion is raised from the leg portions on both sides as described above.
FIG. 11 shows an example of a flat sensor holder. In this case, as shown in the drawing, it is desirable to provide a spacer 54 between the sensor holder 2c and the lower member 50c constituting the mounting member 5c to form a key sensor housing space. In FIG. 11, the spacer 54 on the right side is shown in cross section. In this example, a cylindrical spacer 54 through which the screw 62 is inserted is inserted. Thus, the sensor holder can have various shapes as required.
【００２４】特に、グランドピアノの場合は、筬中貫の
平面位置の形態がメーカーにより、或いは各メーカーの
機種により、様々である。これに対し、上記各実施形態
に係る押鍵検出装置によれば、センサホルダの位置を基
部部材の高さ方向、鍵配列方向及び鍵長手方向に自由に
調節できるので、幅広い形態に対応することができる。In particular, in the case of a grand piano, the form of the plane position of the reed center pier varies depending on the manufacturer or the model of each manufacturer. On the other hand, according to the key press detecting device of each of the above-described embodiments, the position of the sensor holder can be freely adjusted in the height direction of the base member, the key arrangement direction, and the key longitudinal direction, so that it can be applied to a wide range of forms. You can
【００２５】以上は、本発明をグランドピアノに取り付
ける場合を例にとって説明したが、同様にして、アップ
ライトピアノや、電子鍵盤楽器にも取り付けることがで
きる。特に、アップライトピアノの棚板が、上下両面の
板材と内部の中桟とで形成されている場合は、センサホ
ルダに固定部材を取り付ける箇所が限られる。しかし、
本発明に係る押鍵検出装置を用いれば、鍵配列方向及び
／又は鍵長手方向への位置合わせが可能なので、取付け
を簡便且つ正確に行なうことができる。また、他の構造
の棚板を有したアップライトピアノや電子鍵盤楽器にお
いても、基部部材の取付け後に、センサホルダを鍵配列
方向に位置調節できるので、組み付けと位置調節とを分
離して行なうことができ、その結果、組立が迅速となる
という利点が得られる。Although the present invention has been described by taking the case where the present invention is attached to the grand piano as an example, the present invention can be similarly attached to an upright piano or an electronic keyboard instrument. In particular, when the shelf plate of the upright piano is formed by the plate members on the upper and lower surfaces and the inner crosspiece, the location where the fixing member is attached to the sensor holder is limited. But,
When the key depression detecting device according to the present invention is used, the key arrangement can be performed in the key arrangement direction and / or the key longitudinal direction, so that the attachment can be performed easily and accurately. Also, in upright pianos and electronic keyboard musical instruments having shelf boards of other structures, the position of the sensor holder can be adjusted in the key arrangement direction after the base member is attached. Therefore, assembly and position adjustment should be performed separately. As a result, which has the advantage of speeding up the assembly.
【００２６】[0026]
【発明の効果】本発明によれば、キーセンサを保持する
センサホルダは、基部部材に装着される取付け部材を介
して鍵配列方向及び／又は鍵長手方向に位置調節可能に
結合される。したがって、鍵フレームに先ず基部部材を
固定し、これに取付け部材を装着してセンサホルダを結
合すれば、結合後に鍵配列方向及び／又は鍵長手方向に
位置調節ができる。その結果、鍵盤楽器組立工程におい
ては、組み付けを先ず行ない、その後に微調整を行なう
ことができるので、センサホルダの正確な位置決めを簡
便に行なうことができる。また、既存の鍵盤楽器に消音
機構を取り付ける場合にも、設計仕様に合わせるための
位置調節をセンサホルダの結合構造を利用して行なうこ
とができるので、正確な位置決めを極めて簡便に行なう
ことができる。According to the present invention, the sensor holder for holding the key sensor is coupled to the base member via the mounting member so as to be positionally adjustable in the key arrangement direction and / or the key longitudinal direction. Therefore, if the base member is first fixed to the key frame, the mounting member is attached to the base member, and the sensor holder is coupled, the position can be adjusted in the key arrangement direction and / or the key longitudinal direction after the coupling. As a result, in the keyboard musical instrument assembling process, since the assembling can be performed first and the fine adjustment can be performed thereafter, the accurate positioning of the sensor holder can be easily performed. Further, even when a sound deadening mechanism is attached to an existing keyboard instrument, since the position adjustment to match the design specifications can be performed by utilizing the coupling structure of the sensor holder, accurate positioning can be performed extremely easily. .
【図１】 本発明に係る押鍵検出装置を装着したグラン
ドピアノの例を一部断面で示す側面図である。FIG. 1 is a side view showing an example of a grand piano equipped with a key depression detecting device according to the present invention in a partial cross section.
【図２】 図１に示した押鍵検出装置及びこれを取り付
けた筬を示す平面図である。FIG. 2 is a plan view showing the key press detecting device shown in FIG. 1 and a reed to which the key pressing detector is attached.
【図３】 図２の要部を拡大して示す平面図である。FIG. 3 is an enlarged plan view showing a main part of FIG.
【図４】 図３のIV-IV線に沿う断面図である。FIG. 4 is a sectional view taken along line IV-IV in FIG.
【図５】 図３のV-V線に沿う断面図である。5 is a cross-sectional view taken along line VV of FIG.
【図６】 図５に示す部分を分解して示す図である。FIG. 6 is an exploded view of the portion shown in FIG.
【図７】 図３に示すセンサホルダ取付け構造の斜視図
である。FIG. 7 is a perspective view of the sensor holder mounting structure shown in FIG.
【図８】 センサホルダ取付け構造の他の例を示す側面
図である。FIG. 8 is a side view showing another example of the sensor holder mounting structure.
【図９】 センサホルダ取付け構造のさらに他の例を示
す側面図である。FIG. 9 is a side view showing still another example of the sensor holder mounting structure.
【図１０】 図９の平面図である。FIG. 10 is a plan view of FIG.
【図１１】 センサホルダ取付け構造のさらに他の例を
示す側面図である。FIG. 11 is a side view showing still another example of the sensor holder mounting structure.
１…押鍵検出装置、 ２，２ｂ，２ｃ…センサホルダ、
３…キーセンサ、 ４…基部部材、 ５，５ａ，５
ｂ，５ｃ…取付け部材、 ２１…脚部、 ５０，５０
ａ，５０ｂ，５０ｃ…下部材、 ５２，５２ａ…上部
材、 ６０…ばね1 ... Key press detecting device, 2, 2b, 2c ... Sensor holder,
3 ... Key sensor, 4 ... Base member, 5, 5a, 5
b, 5c ... Mounting member, 21 ... Leg part, 50, 50
a, 50b, 50c ... lower member, 52, 52a ... upper member, 60 ... spring
Claims (5)
押鍵状態を検出する鍵盤楽器の押鍵検出装置であって、 各鍵に対応して設けられ押鍵に伴う鍵の動作状態を検出
するキーセンサと、 配列された鍵を下方から支持する鍵フレームの上に配置
されて鍵配列方向に延び、前記キーセンサを保持するセ
ンサホルダと、 前記鍵フレームに固定される基部部材と、 該基部部材に装着され前記センサホルダを鍵配列方向及
び鍵長手方向の少なくとも一方に位置調節可能に結合す
る取付け部材とを備えたことを特徴とする鍵盤楽器の押
鍵検出装置。1. A key-depression detecting device for a keyboard instrument, which is arranged between a key frame and a key and detects a key-depressed state of a key, the key-depressing device being provided corresponding to each key. A key sensor for detecting a state, a sensor holder arranged on a key frame that supports arranged keys from below and extending in the key arrangement direction, and holding the key sensor, a base member fixed to the key frame, A key-depression detecting device for a keyboard instrument, comprising: a mounting member that is mounted on the base member and that couples the sensor holder so as to be positionally adjustable in at least one of a key arrangement direction and a key longitudinal direction.
保持されていることを特徴とする請求項１に記載の押鍵
検出装置。2. The key pressing detection device according to claim 1, wherein a plurality of the sensors are held by the sensor holder.
するケース本体と、該ケース本体下端部から鍵長手方向
に広がるように対をなす脚部とを有し、前記取付け部材
は該脚部と結合することを特徴とする請求項１又は２に
記載の押鍵検出装置。3. The sensor holder has a case main body for holding a key sensor, and a pair of legs extending from the lower end of the case main body in the longitudinal direction of the key, and the mounting member is connected to the legs. The key pressing detection device according to claim 1 or 2, characterized in that.
り長く鍵長手方向に延びる下部材と、該下部材の両端部
から折り返し部を経て該下部材にほぼ平行に延びる上部
材とを備え、前記センサホルダの脚部をこれら上部材及
び下部材の間に挟持するように構成されていることを特
徴とする請求項３に記載の押鍵検出装置。4. The mounting member includes a lower member that extends in the key longitudinal direction longer than the pair of legs, and an upper member that extends from both ends of the lower member substantially parallel to the lower member through folded-back portions. The key pressing detection device according to claim 3, further comprising: a leg portion of the sensor holder configured to be sandwiched between the upper member and the lower member.
上下から挟持する挟持部を有し、さらに、前記基部部材
と前記挟持部との間の間隔を広げ又は狭める方向に付勢
するばねと、該ばねの付勢力に抗して前記間隔を保持す
る調整ねじとを備えたことを特徴とする請求項３又は４
に記載の押鍵検出装置。5. The mounting member has a sandwiching portion that sandwiches the pair of legs from above and below, and further urges in a direction to widen or narrow a gap between the base member and the sandwiching portion. 5. A spring and an adjusting screw for holding the gap against the biasing force of the spring.
The key-depression detection device described in 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003052750A JP4092566B2 (en) | 2002-03-01 | 2003-02-28 | Key-press detection device for keyboard instruments |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002056354 | 2002-03-01 | ||
| JP2002-56354 | 2002-03-01 | ||
| JP2003052750A JP4092566B2 (en) | 2002-03-01 | 2003-02-28 | Key-press detection device for keyboard instruments |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003323178A true JP2003323178A (en) | 2003-11-14 |
| JP4092566B2 JP4092566B2 (en) | 2008-05-28 |
Family
ID=29552210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003052750A Expired - Fee Related JP4092566B2 (en) | 2002-03-01 | 2003-02-28 | Key-press detection device for keyboard instruments |
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| Country | Link |
|---|---|
| JP (1) | JP4092566B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100896175B1 (en) * | 2008-09-30 | 2009-05-11 | 주식회사 미드무로 | Keyboard action sensing device for keyboard musical instrument |
| US8977510B2 (en) | 2011-12-15 | 2015-03-10 | Lg Chem, Ltd. | System and method for determining charging and discharging power levels for a battery pack |
| US9387773B2 (en) | 2012-12-30 | 2016-07-12 | Lg Chem, Ltd. | System and method for derating a power limit associated with a battery pack |
| CN107481698A (en) * | 2016-05-27 | 2017-12-15 | 易弹信息科技（上海）有限公司 | A kind of adapter structure, adaptation method and a kind of fingerboard adaptive device |
-
2003
- 2003-02-28 JP JP2003052750A patent/JP4092566B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100896175B1 (en) * | 2008-09-30 | 2009-05-11 | 주식회사 미드무로 | Keyboard action sensing device for keyboard musical instrument |
| US8977510B2 (en) | 2011-12-15 | 2015-03-10 | Lg Chem, Ltd. | System and method for determining charging and discharging power levels for a battery pack |
| US9387773B2 (en) | 2012-12-30 | 2016-07-12 | Lg Chem, Ltd. | System and method for derating a power limit associated with a battery pack |
| CN107481698A (en) * | 2016-05-27 | 2017-12-15 | 易弹信息科技（上海）有限公司 | A kind of adapter structure, adaptation method and a kind of fingerboard adaptive device |
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