JP2007328186A - Musical sound device and method of manufacturing musical sound device - Google Patents

Musical sound device and method of manufacturing musical sound device Download PDF

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JP2007328186A
JP2007328186A JP2006160054A JP2006160054A JP2007328186A JP 2007328186 A JP2007328186 A JP 2007328186A JP 2006160054 A JP2006160054 A JP 2006160054A JP 2006160054 A JP2006160054 A JP 2006160054A JP 2007328186 A JP2007328186 A JP 2007328186A
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sound
soundboard
contact
musical
electromagnetic
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Kenji Kamata
健二 鎌田
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Kawai Musical Instr Mfg Co Ltd
株式会社河合楽器製作所
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<P>PROBLEM TO BE SOLVED: To provide a musical sound device in which an electromagnetic drive body is brought into contact with and separated from an acoustic board and electronic sound can be emitted, and which prevents sound quality deterioration of sound emitted from the acoustic board, when emitting acoustic sound. <P>SOLUTION: When the electronic sound is emitted, an electromagnetic drive unit (electromagnetic drive body) 21 and a contact body 8 is biased to the acoustic board 1 by a biasing leaf spring (biasing body) 5, and the acoustic board 1 is vibrated according to a musical signal by the electromagnetic unit 21 and sound is emitted. When emitting the acoustic sound, a linking wire (separation body) 2 is drawn by an attaching/detaching lever (separation body) 35, and the electromagnetic unit 21 and the contact body 8 are separated from the acoustic board 1, and thereby, the sound is not deteriorated, since the sound of the acoustic board 1 is not transmitted to the contact body 8. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本件発明は、楽音装置または楽音装置の生産方法に関し、特に、楽器の響板を振動させて、この響板から楽音を発音・放音させるものに関し、楽器の響板を振動させる電磁駆動体の取り付けに関する。   The present invention relates to a musical sound device or a production method of a musical sound device, and more particularly to a device that vibrates a soundboard of a musical instrument and generates and emits a musical sound from the soundboard. Regarding installation.

従来、このような響板(振動板)を振動させるものでは、ボルト、または木ねじなどでピアノの響板に電磁駆動体を固定し、この電磁駆動体に楽音信号を送り込んで、電磁駆動体ではなく、響板を振動させて、この響板から楽音を発音・放音させている。このような響板はフレームなどの取付け部材に取り付けられていた。   Conventionally, in the case of vibrating such a soundboard (diaphragm), an electromagnetic driving body is fixed to a piano soundboard with bolts or wood screws, and a musical sound signal is sent to the electromagnetic driving body. Instead, the soundboard is vibrated, and musical sounds are emitted and emitted from this soundboard. Such a soundboard is attached to an attachment member such as a frame.

実開昭55−112985号公報Japanese Utility Model Publication No. 55-112985 特開平8−146949号公報JP-A-8-146949 特開平8−111896号公報JP-A-8-111896 特開平4−156799報JP-A-4-156799 特開昭53−69624号公報JP-A-53-69624 特開平4−56996号公報JP-A-4-56996 特開平5−80748号公報Japanese Patent Laid-Open No. 5-80748 特開平5−73039報JP 5-73039 A

しかしながら、このような響板(振動板)を電磁駆動体の駆動部分で駆動してみると、電磁駆動体が響板にぶつかって、響板に傷をつけてしまうことがあった。また、このような電磁駆動体を響板に取り付ける際にも、ボルトや木ねじが響板を傷つけてしまうことがあった。   However, when such a soundboard (diaphragm) is driven by the drive portion of the electromagnetic drive body, the electromagnetic drive body may hit the soundboard and damage the soundboard. In addition, when such an electromagnetic driving body is attached to the soundboard, bolts or wood screws may damage the soundboard.

上記目的を達成するために、本件発明は、電磁駆動体の駆動部分に接合され、響板に当接可能であるか、または響板に接合され、上記電磁駆動体の駆動部分に当接可能な、当該響板より硬度が低く、当該響板よりたわみが大きく、当該響板より柔らかい当接部材を備えた。また、本件発明は、上記に加えて、電磁駆動体を上記響板に対して付勢する付勢体を備えた。   In order to achieve the above object, the present invention is joined to the drive portion of the electromagnetic drive body and can contact the soundboard, or can be joined to the soundboard and contact the drive portion of the electromagnetic drive body. In addition, a contact member having lower hardness than the sound board, greater deflection than the sound board, and softer than the sound board is provided. In addition to the above, the present invention further includes a biasing body that biases the electromagnetic driving body against the soundboard.

さらに、本件発明は、上記に加えて、この付勢体の付勢に抗して、上記電磁駆動体を移動させ、上記響板に当接していた上記当接部材を当該響板から離間させるか、または上記電磁駆動体の駆動部分に当接していた上記当接部材を当該駆動部分から離間させ、さらにこの離間状態を保持し、その上この保持状態を解除して上記当接を許容する離間体とを備えた。   Furthermore, in addition to the above, the present invention moves the electromagnetic drive body against the biasing of the biasing body and separates the contact member that has been in contact with the soundboard from the soundboard. Alternatively, the contact member that has been in contact with the drive portion of the electromagnetic drive body is separated from the drive portion, and the separated state is maintained, and the retained state is released to allow the contact. And a separating body.

これにより、響板には響板より硬度が低く、当該響板より柔らかい当接部材が当接し、電磁駆動体が直接響板に当接しないので、電磁駆動体が響板にぶつかって、響板に傷をつけてしまうことがなくなる。そして、響板と電磁駆動体との間に、当該響板より硬度(硬さ)が低く柔らかい接合部材が介在されるので、響板と電磁駆動体とがぶつかりあって「ビリビリ」とか「ガリガリ」といったような共振による異常振動/異常音が発生してしまうことがなくなり、響板から発せられる楽音がクリアになり、響板から放音される音質が劣化しなくなる。   As a result, the sound board has a lower hardness than the sound board and a softer contact member than the sound board, and the electromagnetic drive body does not directly contact the sound board. The board will not be damaged. And since a soft joining member having a lower hardness (hardness) than the soundboard is interposed between the soundboard and the electromagnetic drive body, the soundboard and the electromagnetic drive body collide with each other, so The abnormal vibration / abnormal sound due to the resonance such as “is not generated”, the musical sound emitted from the soundboard is cleared, and the sound quality emitted from the soundboard is not deteriorated.

多大な解析の結果、以下のことが判明した。電磁駆動体は周囲の空気を振動させない「無音振動」を起こし、響板は周囲の空気を振動させる「有音振動」を起こす。無音振動物体が有音振動物体に比べて、材質が硬く形状が小さく重量が重ければ、両者を密着接合させても両者の間に共振/共鳴は生じない。ところが、無音振動の電磁駆動体は有音振動の響板に比べて、形状は小さいが、材質はともに硬く重量もともに重い。そうすると、両者の間に共振/共鳴が生じてしまう。両者の間に、両者より柔らかくたわみが大きい当接部材を介在させれば、このような共鳴/共振は生じなくなった。   As a result of extensive analysis, the following was found. The electromagnetic drive causes “silent vibration” that does not vibrate the surrounding air, and the soundboard causes “sound vibration” that vibrates the surrounding air. If the silent vibration object is harder and has a smaller shape and a heavier weight than the sound vibration object, resonance / resonance does not occur between the two even if they are closely bonded. However, the silent vibration electromagnetic drive body is smaller in shape than the sound vibration soundboard, but the material is both hard and heavy. Then, resonance / resonance occurs between the two. If a contact member that is softer and more flexible than the both is interposed between the two, such resonance / resonance does not occur.

周囲の空気に振動エネルギーを与える有音振動に有音振動が共振/共鳴する場合には、両有音振動に空気の振動がからみあって、間に当接部材を介在させても共鳴/共振が無くならない。これに対して、一方が無音振動であれば、両振動が振動する空気を介して共鳴/共振が起きず、当接部材によって両者の共鳴/共振が十分に無くなる。   When the audible vibration resonates / resonates with the audible vibration that gives vibration energy to the surrounding air, the resonance / resonance does not occur even if the aeration member is entangled between the two audible vibrations and an abutment member is interposed therebetween. It will not disappear. On the other hand, if one side is silent vibration, resonance / resonance does not occur via the air in which both vibrations vibrate, and the contact member sufficiently eliminates both resonance / resonance.

「音を放射する」硬い響板と、「音を放射しない」硬い電磁駆動体の駆動部分との間に、柔らかい当接部材が介在されているので、響板から放射される「音」に対して、電磁駆動体の駆動部分の「無音振動」が悪影響を与えてしまい、響板からの音が変質されてしまうことがなくなる。   A soft abutment member is interposed between the hard sound board that radiates sound and the drive part of a hard electromagnetic drive that does not radiate sound. On the other hand, the “silent vibration” of the drive part of the electromagnetic drive body has an adverse effect, and the sound from the soundboard is not altered.

また、響板と電磁駆動体との間には響板より硬度が低く柔らかい当接部材が介在され、しかも電磁駆動体が響板に付勢されて押し付けられるので、ボルトや木ねじなどで電磁駆動体を響板に固定しなくて済み、響板を傷つけて響板の音響特性を不用意に変えてしまうことがなくなり、響板から放音される音質が劣化しなくなる。   In addition, a soft abutment member that is lower in hardness than the soundboard is interposed between the soundboard and the electromagnetic drive body, and the electromagnetic drive body is urged against and pressed against the soundboard. There is no need to fix the body to the soundboard, and the sound characteristics of the soundboard will not be inadvertently changed by damaging the soundboard, and the sound quality emitted from the soundboard will not deteriorate.

さらに、離間体によって電磁駆動体を響板に当接させたり離間させたりできるので、複数種類の楽音からなる楽音信号を響板から楽音として放射させたり、これを行なわないようにしたりできる。この場合、響板から電磁駆動体を離間できるので、楽器を通常のアコースティックな状態で使用して、響板を振動させて放音させても、電磁駆動体までが振動して響板からの音が異質なものになってしまうことがなく、響板から放音される音質が劣化しない。   Furthermore, since the electromagnetic driving body can be brought into contact with or separated from the sound board by the separated body, a musical sound signal composed of a plurality of types of musical sounds can be emitted from the sound board as musical sounds, or this can be avoided. In this case, since the electromagnetic drive body can be separated from the soundboard, even if the instrument is used in a normal acoustic state and the soundboard is vibrated and released, the electromagnetic drive body vibrates and the soundboard The sound does not become heterogeneous, and the sound quality emitted from the soundboard does not deteriorate.

また、電磁駆動体が響板に向かって付勢されれば、電磁駆動体の駆動部分の振動が響板に抜けなく伝達され、駆動部分の振動に響板が円滑に追随し、響板の音質が悪くなることがない。これが、逆の付勢であると、電磁駆動体の駆動部分と響板と当接体との間に瞬間的に隙間ができて、駆動部分の振動に響板が円滑に追随できず、響板の音質が劣化してしまう。   Further, when the electromagnetic driving body is urged toward the soundboard, the vibration of the driving part of the electromagnetic driving body is transmitted to the sounding board without coming off, and the sounding board smoothly follows the vibration of the driving part, Sound quality does not deteriorate. If this is the reverse bias, there is an instantaneous gap between the drive part of the electromagnetic drive body and the sound board and the contact body, and the sound board cannot follow the vibration of the drive part smoothly. The sound quality of the board will deteriorate.

さらに、この柔らかい当接部材が響板に当接したり離間されたりするので、楽器を通常演奏するアコースティック発音時には、電磁駆動体の駆動部分(場合によって当接部材も)を響板から離間できて、響板の音振動が電磁駆動体の駆動部分に伝わって、響板からの音が変質してしまうことがない。   In addition, since this soft abutting member abuts on or is separated from the soundboard, the drive portion of the electromagnetic driving body (in some cases also the abutting member) can be separated from the soundboard during acoustic sounding that normally plays a musical instrument. The sound vibration of the soundboard is not transmitted to the drive part of the electromagnetic drive body, and the sound from the soundboard is not altered.

(1)響板1
響板1は、木製の方形板状であり、電子ピアノ、電子オルガン、消音ピアノなどの、電子楽器またはアコースティック楽器またはこれらの結合楽器といった、実際の楽器の響板である。この響板1は、振動されて音を放射する。この響板1の材質は、乾燥されたまたは水分を含んだ木材または樹脂が含浸された、含浸されていない木材、合板、集成材、ガラスまたは硬質樹脂(アクリル)などであり、たわみが少なく、たわみ度が小さく、剛度が大きく、剛体に近い。
(1) Soundboard 1
The sound board 1 is a wooden square plate shape, and is a sound board of an actual musical instrument such as an electronic musical instrument, an acoustic musical instrument, or a combination musical instrument thereof such as an electronic piano, an electronic organ, and a mute piano. The sound board 1 is oscillated to emit sound. The sound board 1 is made of unimpregnated wood, plywood, laminated wood, glass or hard resin (acrylic), which is impregnated with dry or moisture-containing wood or resin, and has little deflection, The degree of deflection is small, the rigidity is large, and it is close to a rigid body.

この響板1は、通常のアコースティックなピアノ・オルガンなどの鍵盤楽器、消音ピアノ、電子ピアノ、電子オルガンなどの電子的な鍵盤楽器に使われる木材と同じものが用いられる。なお、チェロ、バイオリンなどの弦楽器の前板、裏板、側板、胴、指板など、木琴・太鼓などの打楽器の発音体、膜、胴などの木製部分などと同じ材質でもよい。   The sound board 1 is made of the same wood as that used for a keyboard instrument such as a normal acoustic piano or organ, or an electronic keyboard instrument such as a mute piano, electronic piano, or electronic organ. The same material as the front plate, back plate, side plate, torso, fingerboard, etc. of string instruments such as cello and violin, percussion instrument such as xylophone and drum, and wooden parts such as membrane and torso may be used.

上記響板1の材質は、アルミニウム、ステンレス、鉄、チタン、マグネシウム、真鍮、プラチナまたはこれらの合金、冷間圧延鋼板などの鋼板、ガラス、硬質樹脂(アクリル)などでもよい。なお、フルート、オーボエなどの管楽器の管、本体など、シンバル、トライアングルなどの打楽器の発音体、胴などの金属製部分などと同じ材質でもよい。   The material of the soundboard 1 may be aluminum, stainless steel, iron, titanium, magnesium, brass, platinum or an alloy thereof, a steel plate such as a cold rolled steel plate, glass, hard resin (acrylic), or the like. Note that the same material may be used for the tube and body of wind instruments such as flutes and oboe, the sounding body of percussion instruments such as cymbals and triangles, and the metal parts such as the trunk.

ところで、響板1は平坦で、表面は平面になっている。したがって、これら響板1から発音・放音される音は平面波となり、球面波の場合に比べて、耳の位置によって左右の耳に音圧の差が生じることがないし、広い範囲にわたって音像位置が一定位置で形成されることができ、響板1に対する耳の位置がかなりずれても、左右の耳に音圧の差を感じないし、音像がずれない。   By the way, the soundboard 1 is flat and the surface is flat. Therefore, the sound produced and emitted from these soundboards 1 is a plane wave, and there is no difference in sound pressure between the left and right ears depending on the position of the ears, compared to the case of a spherical wave, and the sound image position is wide over a wide range. Even if the position of the ear with respect to the soundboard 1 is considerably deviated, a difference in sound pressure between the left and right ears is not felt, and the sound image does not deviate.

このような響板1は、複数に分離され、それぞれがほぼ水平方向/ほぼ横向きに延びるようにそろって配置され、それぞれから高音、中音、低音が放射されれば、高音、中音、低音がほぼ垂直方向/ほぼ縦向きに並んで配置され、しかもこれら各音が平面波なので、各高音、中音、低音につき、耳の位置が左右にずれても上下にずれても、左右の耳に音圧の差を感じにくいし、耳の位置によって 音像位置がずれることがなく、聴覚上違和感が生じない。   Such a soundboard 1 is divided into a plurality of parts and arranged so as to extend substantially horizontally / sideways, and if high, medium, and low sounds are radiated from each, high, medium, and low sounds are provided. Are arranged side by side in almost vertical / vertical direction, and each sound is a plane wave. It is difficult to feel the difference in sound pressure, and the position of the sound image does not shift depending on the position of the ear, so that there is no sense of incongruity in hearing.

このような響板1は、水平方向の左右両端が楽器のフレーム、骨組など楽器本体に固定されており、両端が節となり中央部分が腹となって振動し、周囲の空気を振動させて発音する。なお、響板1…がほぼ垂直方向/ほぼ縦向きに延びるように横に並んで配置されてもよいが、そうすると、高音、中音、低音の各音域の左右の耳への音圧に差が生じるし、各音域の音像位置も耳の位置によってずれることとなり、聴覚上違和感が生じる。   Such a soundboard 1 is fixed to a musical instrument body such as a frame of a musical instrument or a frame at the left and right ends in the horizontal direction, vibrates with both ends as nodes and a central portion as a belly, and vibrates surrounding air. To do. The soundboards 1 may be arranged side by side so as to extend in a substantially vertical direction / a substantially vertical direction. However, in this case, a difference in sound pressure to the left and right ears in each of the high, medium, and low ranges is obtained. In addition, the sound image position of each sound range is also shifted depending on the position of the ear, resulting in a sense of incongruity in hearing.

(2)楽器の全体構造
図1は楽器の全体構造を示す。この楽器はアコースティックなアップライトピアノ31の例である。上記響板1は、このアップライトピアノ31の背面側に取り付けられている。アップライトピアノ31の底板32の左側の上面には電磁駆動ユニット(電磁駆動体)21が取り付けられ、この響板1の内面(裏面)の下左側(図1で左側)に対向して接合され当接されている。
(2) Overall structure of musical instrument FIG. 1 shows the overall structure of the musical instrument. This musical instrument is an example of an acoustic upright piano 31. The soundboard 1 is attached to the back side of the upright piano 31. An electromagnetic driving unit (electromagnetic driving body) 21 is attached to the upper surface on the left side of the bottom plate 32 of the upright piano 31 and is joined to the lower left side (left side in FIG. 1) of the inner surface (back side) of the soundboard 1. It is in contact.

また、上記響板1の内面(裏面)の中央には、音を放射するツィータ(スピーカー)33が接合され取付けされている。アップライトピアノ31の鍵盤の下の棚34の下面中央には着脱レバー(離間体)35が取り付けられ、この着脱レバー35と上記電磁駆動ユニット21とには連結ワイヤー(離間体)2が連結されている。   In addition, a tweeter (speaker) 33 that emits sound is joined and attached to the center of the inner surface (back surface) of the soundboard 1. A detachable lever (spacer) 35 is attached to the center of the bottom surface of the shelf 34 under the keyboard of the upright piano 31, and a linking wire (spacer) 2 is coupled to the detachable lever 35 and the electromagnetic drive unit 21. ing.

この着脱レバー(離間体)35を引くと、連結ワイヤー2が引かれ、電磁駆動ユニット21の振動板(駆動部分)23が響板1から離間される。着脱レバー(離間体)35を解放すると、連結ワイヤー2が復帰され、電磁駆動ユニット21の振動板(駆動部分)23が響板1に当接して接合される。   When this detachable lever (spacer) 35 is pulled, the connecting wire 2 is pulled, and the diaphragm (drive portion) 23 of the electromagnetic drive unit 21 is separated from the soundboard 1. When the detachable lever (spacer) 35 is released, the connecting wire 2 is restored, and the diaphragm (drive portion) 23 of the electromagnetic drive unit 21 is brought into contact with and joined to the soundboard 1.

上記棚34の下面の右側には、音源ユニット36が取り付けられている。上記底板32の上面の右側には、アンプボックス37が取り付けられている。音源ユニット36からの複数種類の楽音からなる楽音信号のうち、フィルタ処理によって低音成分(中音成分も含む)が抽出されて上記電磁駆動ユニット21に送られ、当該楽音信号のうち、フィル処理によって高音成分が抽出されて上記ツィータ33に送られ楽音が発音/放射される。   A sound source unit 36 is attached to the right side of the lower surface of the shelf 34. An amplifier box 37 is attached to the right side of the upper surface of the bottom plate 32. Of the musical tone signal composed of a plurality of types of musical sounds from the sound source unit 36, a bass component (including a middle tone component) is extracted by filtering and sent to the electromagnetic drive unit 21. A high-frequency component is extracted and sent to the tweeter 33 to generate / radiate a musical tone.

この高音部分は、複数種類の楽音からなる楽音信号のうち、2kHz付近以上の周波数の楽音がフィルタによって抽出される。これにより、高音部分は、電磁駆動ユニット21を通じて響板1から放射せず、ツィータ33から直接放射されるので、高音の減衰が少なくなる。   For the high-pitched portion, a musical tone having a frequency of about 2 kHz or higher is extracted by a filter from musical tone signals composed of a plurality of types of musical tones. As a result, the treble portion is not radiated from the soundboard 1 through the electromagnetic drive unit 21, but is radiated directly from the tweeter 33, so that the treble attenuation is reduced.

(3)電磁駆動ユニット(電磁駆動体)21の取付け構造
図2及び図3は、上記電磁駆動ユニット(電磁駆動体)21の取付け構造を示す。上記響板1はアップライトピアノ31の背面の支柱(骨組)3に固定されている。上記アップライトピアノ31の底板32の上面左側には、断面が「L」字状の板状の取付け具4がボルトまたは木ねじなどで固定されている。
(3) Attachment structure of electromagnetic drive unit (electromagnetic drive body) 21 FIGS. 2 and 3 show the attachment structure of the electromagnetic drive unit (electromagnetic drive body) 21. FIG. The soundboard 1 is fixed to a column (frame) 3 on the back of the upright piano 31. On the left side of the upper surface of the bottom plate 32 of the upright piano 31, a plate-shaped fixture 4 having a cross section of an “L” shape is fixed with a bolt or a wood screw.

このボルトまたは木ねじを緩めて、この取付け具4は前後または左右(水平方向)に位置調整可能となっている。これにより、当接体8が経年変化によって厚さが変化したり、縮んだり、膨張したりしても、響板1への最適な当接位置に調節できる。   By loosening the bolt or the wood screw, the position of the fixture 4 can be adjusted in the front-rear direction or the left-right direction (horizontal direction). As a result, even if the thickness of the contact body 8 changes, shrinks, or expands due to aging, the contact body 8 can be adjusted to the optimal contact position with the soundboard 1.

この取付け具4の縦の面の奥側つまり響板1側には、付勢板バネ(付勢体)5が取り付けられている。この付勢板バネ5は、帯状の板バネがすり鉢型または富士山型に成型され、その両端がボルトまたは木ねじなどで取付け具4に固定されている。   An urging plate spring (biasing body) 5 is attached to the rear side of the vertical surface of the fixture 4, that is, the soundboard 1 side. The urging leaf spring 5 is a belt-like leaf spring formed into a mortar shape or a Mt. Fuji shape, and both ends thereof are fixed to the fixture 4 with bolts or wood screws.

この付勢板バネ5の頂部には、上記電磁駆動ユニット21がボルト6などで取付けられている。この付勢板バネ5によって、電磁駆動ユニット21が上記響板1に向かって/対して付勢される。   The electromagnetic drive unit 21 is attached to the top of the urging plate spring 5 with a bolt 6 or the like. The urging plate spring 5 urges the electromagnetic drive unit 21 toward / to the soundboard 1.

このボルト6は、「コ」字状の連結具7及び上記付勢板バネ5の頂部を貫通して電磁駆動ユニット21に螺合螺着される。電磁駆動ユニット21の外形は円柱状の本体ケース22とこの本体ケース22の下面に設けられている円形の平坦な振動板23とからなっている。   The bolt 6 passes through the top of the “U” -shaped connector 7 and the biasing plate spring 5 and is screwed to the electromagnetic drive unit 21. The external shape of the electromagnetic drive unit 21 includes a cylindrical main body case 22 and a circular flat diaphragm 23 provided on the lower surface of the main body case 22.

この振動板23の中央には、円板状の当接体8が接合され両面テープまたは接着剤などで接着されている。この両面テープまたは接着剤は、円板状の当接体8の円形の奥面の周縁に沿って取り付けられている。この当接体8の直径は例えば80mm、厚さは例えば10mmほどである。   A disc-shaped contact body 8 is bonded to the center of the vibration plate 23 and bonded with a double-sided tape or an adhesive. This double-sided tape or adhesive is attached along the periphery of the circular back surface of the disk-shaped contact body 8. The diameter of the contact body 8 is, for example, 80 mm, and the thickness is, for example, about 10 mm.

このように当接体8の周縁だけで振動板23に接着されているから、当接体8が響板1に当接したときの響板1への当接面と、電磁駆動ユニット21の振動板23への当接面とにおける、音響伝達/振動伝達の特性を同じまたは近似したものにでき、響板1から放音される音質が劣化しなくなり、両面テープまたは接着剤の使用量を少なくできる。   As described above, since only the periphery of the contact body 8 is adhered to the diaphragm 23, the contact surface to the soundboard 1 when the contact body 8 contacts the soundboard 1, and the electromagnetic drive unit 21. The sound transmission / vibration transmission characteristics on the contact surface to the diaphragm 23 can be made the same or approximate, the sound quality emitted from the soundboard 1 is not deteriorated, and the amount of double-sided tape or adhesive used is reduced. Less.

上記当接体8の直径/大きさは、電磁駆動ユニット21の振動板23の直径/大きさより小さい。これにより、当接体8が振動板23の周縁からはみ出さない。もしはみ出ると、このはみ出し部分の音響伝達/振動伝達の特性と、はみ出ていない部分の音響伝達/振動伝達の特性とが異なってしまい、当接体8全体の音響伝達/振動伝達の特性が均一とならず、音の反射が起きたり、この反射で少々の共振が起きたりしてしまう。振動板23より小さい当接体8ならば、このようなことは起きず、響板1から放音される音質が劣化しなくなる。   The diameter / size of the contact body 8 is smaller than the diameter / size of the diaphragm 23 of the electromagnetic drive unit 21. Thereby, the contact body 8 does not protrude from the peripheral edge of the diaphragm 23. If it protrudes, the sound transmission / vibration transmission characteristics of the protruding portion and the sound transmission / vibration transmission characteristics of the non-extrusion portion are different, and the sound transmission / vibration transmission characteristics of the entire contact body 8 are uniform. Otherwise, sound reflection occurs, and a little resonance occurs due to this reflection. If the contact body 8 is smaller than the diaphragm 23, this does not occur, and the sound quality emitted from the soundboard 1 does not deteriorate.

(4)楽音装置の生産方法
以上のような楽音装置の生産方法または電磁駆動ユニット21付きの楽器の生産方法は以下の通りである。
(a)当接体8を電磁駆動ユニット21の振動板23に接着/接合させる。
(b)取付け具4に、電磁駆動ユニット21、付勢板バネ5、連結具7を、ボルト6で固定するとともに、連結ワイヤー2の一端を取付け具4に挿通させて連結具7に固定する。
(4) Production method of musical sound device The production method of the musical sound device as described above or the production method of the musical instrument with the electromagnetic drive unit 21 is as follows.
(A) The contact body 8 is bonded / joined to the diaphragm 23 of the electromagnetic drive unit 21.
(B) The electromagnetic drive unit 21, the urging plate spring 5, and the connector 7 are fixed to the fixture 4 with bolts 6, and one end of the connection wire 2 is inserted into the fixture 4 and fixed to the connector 7. .

(c)当接体8が響板1に当接/離間が可能なように(b)の取付け具4を楽器に固定し、着脱レバー35を楽器に固定する。
(d)ツィータ33、音源ユニット36、アンプボックス37を楽器に取り付ける。
このうち、(a)の工程は、(b)の工程の後に行なってもよい。また(d)の工程は、(c)、(b)または(a)の工程の前に行なってもよい。
(C) The attachment 4 in (b) is fixed to the musical instrument and the detachable lever 35 is fixed to the musical instrument so that the abutting body 8 can contact / separate the soundboard 1.
(D) The tweeter 33, the sound source unit 36, and the amplifier box 37 are attached to the musical instrument.
Among these, you may perform the process of (a) after the process of (b). The step (d) may be performed before the step (c), (b) or (a).

上記電磁駆動ユニット21、連結ワイヤー2、取付け具4、付勢板バネ5、連結具7、当接体8、ツィータ33、着脱レバー35、音源ユニット36、アンプボックス37の全部または一部の取付けは、いったん生産された楽器に対して、後から付加する形で取り付けられるが、楽器の生産と同時に取付けられてもよい。   Attachment of all or part of the electromagnetic drive unit 21, the connecting wire 2, the attaching tool 4, the biasing leaf spring 5, the connecting tool 7, the contact body 8, the tweeter 33, the detachable lever 35, the sound source unit 36, and the amplifier box 37. Is attached to the instrument once produced in a form to be added later, but may be attached simultaneously with the production of the instrument.

(4)着脱レバー(離間体)35及び連結ワイヤー(離間体)2
図4は、上記着脱レバー(離間体)35を示す。この着脱レバー35は、回動部11と握り部12とからなっている。回転部11は上記アップライトピアノ31の棚34の下面に回動可能に取り付けられており、握り部12は、この回動部11に一体となって、この回動部11から突出している。
(4) Detachable lever (spacer) 35 and connecting wire (spacer) 2
FIG. 4 shows the detachable lever (spacer) 35. The detachable lever 35 includes a rotating part 11 and a grip part 12. The rotating portion 11 is rotatably attached to the lower surface of the shelf 34 of the upright piano 31, and the grip portion 12 is integrated with the rotating portion 11 and protrudes from the rotating portion 11.

上記回動部11の周面に、上記連結ワイヤー2の一端が固定されている。この回動部11の横の棚34の下面には、保持突起13が設けられており、この保持突起13に握り部12が係合可能となっている。連結ワイヤー2の他端は、上記「L」字状の取付け具4を貫通し、上記「コ」字状の連結具7の2つの先端の間に連結固定されている。   One end of the connecting wire 2 is fixed to the circumferential surface of the rotating portion 11. A holding projection 13 is provided on the lower surface of the horizontal shelf 34 of the rotating portion 11, and the grip portion 12 can be engaged with the holding projection 13. The other end of the connecting wire 2 passes through the “L” -shaped attachment 4 and is connected and fixed between the two ends of the “U” -shaped connector 7.

図2に示すように、上記着脱レバー35の握り部12を、付勢板バネ5の付勢に抗して回すと、連結ワイヤー2が引かれ、電磁駆動ユニット21及び振動板23が移動され、響板1に当接していた当接体8が響板1から離間される。握り部12を、保持突起13に係合させると、この離間状態が保持される。   As shown in FIG. 2, when the grip portion 12 of the detachable lever 35 is turned against the bias of the biasing plate spring 5, the connecting wire 2 is pulled, and the electromagnetic drive unit 21 and the diaphragm 23 are moved. The contact body 8 that has been in contact with the soundboard 1 is separated from the soundboard 1. When the grip portion 12 is engaged with the holding projection 13, this separated state is held.

図3に示すように、握り部12を、保持突起13から外して、上記保持状態を解除すると、付勢板バネ5の付勢によって電磁駆動ユニット21及び振動板23が復動され、付勢板バネ5の付勢によって当接体8の響板1への接合及び当接が許容される。   As shown in FIG. 3, when the grip portion 12 is removed from the holding projection 13 and the holding state is released, the electromagnetic drive unit 21 and the diaphragm 23 are moved back by the biasing of the biasing plate spring 5, and the biasing is performed. The urging of the leaf spring 5 allows the abutment body 8 to join and abut on the soundboard 1.

このように、響板1と電磁駆動ユニット21との間には響板1より硬度が低く柔らかい当接体8が介在され、しかも電磁駆動ユニット21が響板1に付勢されて押し付けられるので、ボルトや木ねじなどで電磁駆動ユニット21を響板1に固定しなくて済み、響板1を傷つけて響板1の音響特性を不用意に変えてしまうことがなくなる。   As described above, the soft contact member 8 having a lower hardness than the soundboard 1 is interposed between the soundboard 1 and the electromagnetic drive unit 21, and the electromagnetic drive unit 21 is urged and pressed against the soundboard 1. The electromagnetic drive unit 21 does not need to be fixed to the soundboard 1 with bolts or wood screws, and the sound characteristics of the soundboard 1 are not inadvertently changed by damaging the soundboard 1.

さらに、着脱レバー35及び連結ワイヤー2によって電磁駆動ユニット21または/及び当接体8を響板1に当接させたり離間させたりできるので、複数種類の楽音からなる楽音信号を響板1から楽音として放射させたり、これを行なわないようにしたりできる。   Furthermore, since the electromagnetic drive unit 21 and / or the contact body 8 can be brought into contact with or separated from the soundboard 1 by the detachable lever 35 and the connecting wire 2, a sound signal consisting of a plurality of types of music sounds can be obtained from the soundboard 1. Can be radiated or not be done.

この場合、電磁駆動ユニット21または/及び当接体8を響板1から離間できるので、楽器を通常のアコースティックな状態で使用して、響板1を振動させて放音させても、電磁駆動ユニット21、振動板23または/及び当接体8までが振動して響板1からの音が異質なものになってしまうことがない。   In this case, since the electromagnetic drive unit 21 and / or the contact body 8 can be separated from the soundboard 1, even if the instrument is used in a normal acoustic state and the soundboard 1 is vibrated to emit sound, the electromagnetic drive The unit 21, the diaphragm 23 and / or the contact body 8 do not vibrate and the sound from the soundboard 1 does not become different.

上記着脱レバー35の握り部12を、保持突起13から解放した、図4の位置には、電源スイッチ38が設けられている。この電源スイッチ38のオン/オフによって、上記音源ユニット36、アンプボックス37の電源が投入されたり、切られたりする。   A power switch 38 is provided at a position in FIG. 4 where the grip 12 of the detachable lever 35 is released from the holding projection 13. By turning on / off the power switch 38, the sound source unit 36 and the amplifier box 37 are turned on or off.

したがって、電磁駆動ユニット21及び振動板23が当接体8とともに響板1へ当接すると、これに連動して音源ユニット36、アンプボックス37の電源が投入され、上記楽音信号の発生、増幅及び響板1からの放音が可能となる。   Accordingly, when the electromagnetic drive unit 21 and the diaphragm 23 come into contact with the soundboard 1 together with the contact body 8, the sound source unit 36 and the amplifier box 37 are turned on in conjunction with this to generate, amplify, and Sound emission from the soundboard 1 is possible.

また、電磁駆動ユニット21及び振動板23が当接体8とともに響板1から離間すると、これに連動して音源ユニット36、アンプボックス37の電源が切られ、上記楽音信号の発生、増幅及び響板1からの放音が禁止される。   Further, when the electromagnetic drive unit 21 and the diaphragm 23 are separated from the soundboard 1 together with the contact body 8, the sound source unit 36 and the amplifier box 37 are turned off in conjunction with this, and the generation, amplification and sound of the above-mentioned tone signal are performed. Sound emission from the plate 1 is prohibited.

したがって、この楽器のアコースティック演奏時には、音源ユニット36、アンプボックス37などの電子発音手段/楽音信号発生手段が作動しなくなり、不用意な発音がなされなくなる。なお、アンプボックス37から電磁駆動ユニット21及びツィータ33への接続線にオン/オフスイッチが介在され、このオン/オフスイッチが上記電源スイッチ38によって切り換えられてもよい。   Therefore, during the acoustic performance of this musical instrument, electronic sound generation means / musical sound signal generation means such as the sound source unit 36 and the amplifier box 37 do not operate, and inadvertent sound generation is not performed. An on / off switch may be interposed in the connection line from the amplifier box 37 to the electromagnetic drive unit 21 and the tweeter 33, and the on / off switch may be switched by the power switch 38.

(5)当接体8
上記当接体8の材質は、発泡ウレタン製、ウレタンエラストマー製、スチレン系ポリマー、エポキシ、塩化ビニール、酢酸ビニール、合成ゴムなどの可撓性のある軟質樹脂製、布、紙、パルプなどで、密度は690kg/m3、25%圧縮強さは1.06Mpa、引張り強度は2.67Mpa、伸びは150%、引裂強度は8.60N/mm、圧縮永久歪みは7.6%である。
(5) Contact body 8
The material of the contact body 8 is made of urethane foam, urethane elastomer, styrenic polymer, epoxy, vinyl chloride, vinyl acetate, synthetic rubber or other flexible soft resin, cloth, paper, pulp, etc. The density is 690 kg / m @ 3, the 25% compressive strength is 1.06 Mpa, the tensile strength is 2.67 Mpa, the elongation is 150%, the tear strength is 8.60 N / mm, and the compression set is 7.6%.

この当接体8は、上記響板1または振動板23(電磁駆動ユニット21)より、密度は小さく、25%圧縮強さは小さく、引張り強度は小さく、伸びは大きく、引裂強度は小さく、圧縮永久歪みは大きい。   The contact body 8 has a density smaller than that of the sound board 1 or the diaphragm 23 (electromagnetic drive unit 21), 25% compression strength is small, tensile strength is small, elongation is large, tear strength is small, compression The permanent set is large.

上記当接体8は、上記響板1または振動板23より硬度(硬さ)が低く、当該響板1または振動板23より柔らかい。振動板23は、上記響板1より硬度(硬さ)が高く、当該響板1より硬いか、または上記響板1とほぼ同じ硬度で、当該響板1とほぼ同じ硬さである。   The contact body 8 is lower in hardness (hardness) than the soundboard 1 or the diaphragm 23 and is softer than the soundboard 1 or the diaphragm 23. The diaphragm 23 has a higher hardness (hardness) than the soundboard 1 and is harder than the soundboard 1 or substantially the same hardness as the soundboard 1 and substantially the same hardness as the soundboard 1.

このような硬度(硬さ)は、一定荷重で圧子を押し込み、その深さ、荷重をくぼみの面積で割った値で表わされる。場合によって、この硬度(硬さ)は、上記密度、25%圧縮強さ、引張り強度、伸び、引裂強度、圧縮永久歪みのいずれか、またはこれらの一部または全部の加算値/乗算値などで表わされる。   Such hardness (hardness) is expressed by a value obtained by pressing the indenter with a constant load and dividing the depth and load by the area of the recess. In some cases, this hardness (hardness) is one of the above-mentioned density, 25% compression strength, tensile strength, elongation, tear strength, compression set, or a partial or total addition value / multiplication value thereof. Represented.

このような当接体8の硬度(硬さ)は、上記響板1または振動板23の硬度(硬さ)の2/3乃至1/10、望ましくは1/2乃至1/5、より望ましくは1/3乃至1/4とされる。これにより、響板1と当接体8とがぶつかりあって共振による異常振動/異常音が発生してしまうことがなくなり、響板1から発せられる楽音がクリアになり、響板1から放音される音質が劣化しなくなる。   The hardness (hardness) of the contact body 8 is 2/3 to 1/10, preferably 1/2 to 1/5, more preferably the hardness (hardness) of the soundboard 1 or the diaphragm 23. Is 1/3 to 1/4. As a result, the sound board 1 and the contact body 8 do not collide with each other and abnormal vibration / abnormal sound due to resonance is not generated, and the musical sound emitted from the sound board 1 is cleared, and sound is emitted from the sound board 1. The sound quality that is played will not deteriorate.

この当接体8の硬度(硬さ)の値と、上記響板1または振動板23の硬度(硬さ)の値とが、近いと、振動板23から響板1への振動/音の伝達損失が大きくなるが、響板1と振動板23との共振による異常振動/異常音が少なくなり、響板1から放音される音質が劣化しなくなる。これらの値の差が大きくなると、振動板23から響板1への振動/音の伝達損失が小さくなるが、響板1と振動板23との共振による異常振動/異常音が増えて、響板1から放音される音質が劣化する。   When the hardness (hardness) value of the contact body 8 is close to the hardness (hardness) value of the soundboard 1 or the diaphragm 23, vibration / sound from the diaphragm 23 to the soundboard 1 is reduced. Although transmission loss increases, abnormal vibration / abnormal sound due to resonance between the soundboard 1 and the diaphragm 23 is reduced, and the sound quality emitted from the soundboard 1 is not deteriorated. When the difference between these values increases, the vibration / sound transmission loss from the diaphragm 23 to the soundboard 1 decreases, but abnormal vibration / abnormal sound due to resonance between the soundboard 1 and the diaphragm 23 increases, and the sound. The sound quality emitted from the plate 1 is deteriorated.

上記響板1の固有振動数と振動板23の固有振動数とは、同形同大において、ほぼ同じまたは近似している。また、上記当接体8の固有振動数と上記響板1または振動板23の固有振動数とは、同形同大において、数倍または大きく異なっている。   The natural frequency of the soundboard 1 and the natural frequency of the diaphragm 23 are substantially the same or approximate in the same shape and size. Further, the natural frequency of the contact body 8 and the natural frequency of the soundboard 1 or the diaphragm 23 are several times or greatly different in the same shape and size.

また、上記当接体8の固有振動数は、選択する材質よっては、無いこともある。このような各部材の固有振動数は、各部材に力が働かないときでも減衰がない振動周波数である。この固有振動数そのもの、またはこの固有振動数付近で共振が起きる。この固有振動数は、上記部材の材質によって変化するし、部材の大きさ、幅、厚さ、形状によっても変化するので、固有振動数を対比するときは、同形同大で対比する必要がある。   The natural frequency of the contact body 8 may not be present depending on the material selected. Such a natural frequency of each member is a vibration frequency that does not attenuate even when no force is applied to each member. Resonance occurs at or near this natural frequency. This natural frequency varies depending on the material of the member, and also varies depending on the size, width, thickness, and shape of the member. Therefore, when comparing the natural frequency, it is necessary to compare with the same shape and the same size. is there.

(6)電磁駆動ユニット21の構造
電磁駆動ユニット21の外形は円柱状の本体ケース22とこの本体ケース22の下面に設けられている円形の平坦な振動板23とからなっている。この振動板23及び本体ケース22は金属または硬質樹脂からなり、たわみが少なく、たわみ度が小さく、剛度が大きく、剛体に近い。電磁駆動ユニット21の中にはコイルと磁石とが内蔵され、上記本体ケース22及び振動板23の一方にコイルが連結され他方に磁石が連結される。
(6) Structure of Electromagnetic Drive Unit 21 The external shape of the electromagnetic drive unit 21 is composed of a cylindrical main body case 22 and a circular flat diaphragm 23 provided on the lower surface of the main body case 22. The diaphragm 23 and the main body case 22 are made of metal or hard resin, have a small amount of deflection, a small degree of deflection, a large stiffness, and are close to a rigid body. A coil and a magnet are built in the electromagnetic drive unit 21, and the coil is connected to one of the main body case 22 and the diaphragm 23 and the magnet is connected to the other.

上記コイルに複数種類の楽音からなる楽音信号が流れると、コイルに生じる磁界と磁石の磁界との相互作用によって、コイルまたは磁石が振動/駆動/変位し、本体ケース22に対して振動板23が振動/駆動/変位する。本体ケース22つまりコイルと磁石のうち一方を、上記響板1より重い上記底板32(取付け具4)など楽器本体側に固定し、振動板23つまり他方を上記響板1に直接または上記当接体8を介して当接(接合/取付け/連結/接着/固定を含む)させる。   When a musical sound signal composed of a plurality of types of musical sounds flows through the coil, the coil or magnet vibrates / drives / displaces due to the interaction between the magnetic field generated in the coil and the magnetic field of the magnet, and the diaphragm 23 moves relative to the body case 22. Vibrate / drive / displace. One of the main body case 22, that is, the coil and the magnet, is fixed to the instrument main body side such as the bottom plate 32 (attachment 4) heavier than the sound board 1, and the vibration plate 23, that is, the other is directly or against the sound board 1. It abuts (including joining / attaching / connecting / adhering / fixing) via the body 8.

これにより、楽器本体に対して振動板23及び響板1の方を電磁駆動させて振動させることができる。電磁駆動ユニット21は、スピーカーとは異なり、それ自体は発音/放音せず、接合された他の物体を電磁駆動させて振動させ発音/放音させるものである。このような電磁駆動ユニット11…は、特開平8−146949号公報、特開平8−111896号公報などに開示されている。   Thereby, the diaphragm 23 and the soundboard 1 can be vibrated by electromagnetically driving the instrument body. Unlike the speaker, the electromagnetic drive unit 21 does not sound / sound itself, and causes other joined objects to be electromagnetically driven to vibrate and sound / sound. Such electromagnetic drive units 11 are disclosed in Japanese Patent Laid-Open Nos. 8-146949 and 8-111896.

上記振動板23と響板1と当接体8の両面は、共にほぼ平坦で互いにほぼ平行になっており、当接体8の厚さもほぼ均一である。ほぼ平行であれば、平面のほか、球面、円筒面、その他の湾曲した面、多面体の面であってもよい。このように平行/厚さ均一であれば、振動板23から響板1への音響伝達/振動伝達の特性が均一となって、響板1から放音される音質が劣化しなくなる。なお、場合によって、振動板23と響板1とは平行でなくてもよい。   Both surfaces of the diaphragm 23, the soundboard 1 and the contact body 8 are substantially flat and substantially parallel to each other, and the thickness of the contact body 8 is also substantially uniform. As long as it is substantially parallel, it may be a plane, a spherical surface, a cylindrical surface, other curved surfaces, or a polyhedral surface. If the parallel / thickness is uniform in this way, the characteristics of sound transmission / vibration transmission from the diaphragm 23 to the soundboard 1 become uniform, and the sound quality emitted from the soundboard 1 does not deteriorate. In some cases, the diaphragm 23 and the soundboard 1 may not be parallel.

上記電磁駆動体ユニット21の振動板23はスピーカーのコーンや平板振動板などと異なり、重量があって駆動させるのにパワーのある信号が供給され、それ自体は音を出すものではなく、響板1といった他の物体に振動を伝えて音を出させるものである。   The diaphragm 23 of the electromagnetic driver unit 21 is different from a speaker cone, a plate diaphragm, or the like, and is supplied with a signal having power to drive due to its weight. The vibration is transmitted to other objects such as 1 to make a sound.

上記電磁駆動体ユニット21の振動板23自身は音を放射しないので、音の放射にあたっては、電磁駆動体ユニット21の振動板23からの発生音も考慮する必要がなくなり、響板1からの発生音だけを考慮すればよく、楽音装置全体からの発生音の分析・解析が容易になる。なお、電磁駆動体ユニット21の振動板23自身からも音が放射されてもよい。   Since the diaphragm 23 itself of the electromagnetic driver unit 21 does not radiate sound, it is not necessary to consider the sound generated from the diaphragm 23 of the electromagnetic driver unit 21 when emitting the sound. Only the sound needs to be considered, and the analysis and analysis of the sound generated from the entire musical sound device becomes easy. Note that sound may also be emitted from the diaphragm 23 itself of the electromagnetic driver unit 21.

ここで、音を放射するには、振動する物体の周囲の空気を振動させなくてならない。したがって、響板1は周囲の空気を振動(有音振動)させるが、電磁駆動体ユニット21の振動板23は周囲の空気を振動させず(無音振動)、当接体8を介して、響板1を振動(有音振動)させるのみである。   Here, in order to emit sound, the air around the vibrating object must be vibrated. Accordingly, the sound board 1 vibrates the surrounding air (sound vibration), but the vibration plate 23 of the electromagnetic drive unit 21 does not vibrate the surrounding air (silent vibration), and the sound is transmitted through the contact body 8. Only the plate 1 is vibrated (sound vibration).

周囲の空気に対して振動のエネルギーを伝えることができない材質/形状/重量のとき無音振動となり、周囲の空気に対して振動のエネルギーを伝えることができる材質/形状/重量のとき有音振動となる。したがって、同じ振動を与えても、有音振動には空気抵抗がある分だけ、無音振動の振動形態とは差異が生じる。   Silent vibration occurs when the material / shape / weight cannot transmit vibration energy to the surrounding air, and sound vibration occurs when the material / shape / weight transmits vibration energy to the surrounding air. Become. Therefore, even if the same vibration is applied, the sound vibration is different from the vibration form of the silent vibration due to the air resistance.

多大な解析の結果、無音振動物体が有音振動物体に比べて、材質が硬く形状が小さく重量が重ければ、両者を密着接合させても両者の間に共振/共鳴は生じない。ところが、無音振動の電磁駆動体ユニット21の振動板23は有音振動の響板1に比べて、形状は小さいが、材質はともに硬く重量もともに重い。そうすると、両者の間に共振/共鳴が生じてしまう。両者の間に、両者より柔らかくたわみが大きい当接体8を介在させれば、このような共鳴/共振は生じなくなった。   As a result of extensive analysis, if the silent vibration object is harder, smaller in shape and heavier than the sound vibration object, resonance / resonance does not occur between them even if they are tightly bonded. However, the diaphragm 23 of the silent vibration electromagnetic drive unit 21 is smaller in shape than the sound diaphragm 1 of the sound vibration, but the material is both hard and heavy. Then, resonance / resonance occurs between the two. If a contact body 8 that is softer and more flexible than the both is interposed between the two, such resonance / resonance does not occur.

当接体8の形状は両者より小さいが、大きくてもよいし、当接体8の重量は両者より小さいが、大きくてもよい。なお、周囲の空気に振動エネルギーを与える有音振動に有音振動が共振/共鳴する場合には、両有音振動に空気の振動がからみあって、間に当接体8を介在させても共鳴/共振が無くならない。これに対して、一方が無音振動であれば、両振動が振動する空気を介して共鳴/共振が起きず、当接体8によって両者の共鳴/共振が十分に無くなる。   The shape of the contact body 8 is smaller than both, but may be larger, and the weight of the contact body 8 is smaller than both, but may be larger. When the sonic vibration resonates / resonates with the sonic vibration that gives vibration energy to the surrounding air, the vibration of the air is entangled with both audible vibrations, and even if the abutment 8 is interposed therebetween, the resonance occurs. / Resonance is not lost. On the other hand, if one of the vibrations is silent, resonance / resonance does not occur through the air in which both vibrations vibrate, and the contact member 8 sufficiently eliminates the resonance / resonance between the two.

(7)他の実施の形態
本件発明は上記実施例に限定されず、本件発明の趣旨を逸脱しない範囲で種々変更可能である。例えば、上記当接体8は、電磁駆動ユニット21の振動板23に接着(接合/取付け/連結/固定を含む)される代わりに、響板1の方に接着されてもよい。この場合、当接体8に対して、電磁駆動ユニット21の振動板23が当接したり離間したりする。
(7) Other Embodiments The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, the contact body 8 may be bonded to the soundboard 1 instead of being bonded (including joining / attaching / connecting / fixing) to the diaphragm 23 of the electromagnetic drive unit 21. In this case, the diaphragm 23 of the electromagnetic drive unit 21 contacts or separates from the contact body 8.

上記当接体8は複数に分割されてもよく、この複数の当接体8の厚さ・長さ・幅・大きさが異なっていてもよいし、当接体8の厚さは均一でなくてもよく、形状は方形、多角形、環状円形、環状多角形など円形以外でもよい。上記当接体8は省略されてもよいし、電磁駆動ユニット21の振動板23より大きくてはみ出ていてもよいし、振動板23と同じ大きさでもよい。   The contact body 8 may be divided into a plurality of parts, and the plurality of contact bodies 8 may have different thicknesses, lengths, widths and sizes, and the contact body 8 has a uniform thickness. The shape may be omitted, and the shape may be other than a circle such as a square, a polygon, an annular circle, and an annular polygon. The contact body 8 may be omitted, may protrude beyond the diaphragm 23 of the electromagnetic drive unit 21, or may be the same size as the diaphragm 23.

上記ツィータ33は、スピーカーでもよいし、小型の電磁駆動ユニットでも良いし、省略されてもよい。付勢板バネ(付勢体)5は、電磁駆動ユニット21を響板1へ押し付けているが、電磁駆動ユニット21を響板1へ引っ張ってもよい。この場合、電磁駆動ユニット21を引っ張る1つまたは複数の弾性体が支柱3と電磁駆動ユニット21との間に架け渡される。   The tweeter 33 may be a speaker, a small electromagnetic drive unit, or may be omitted. The biasing plate spring (biasing body) 5 presses the electromagnetic drive unit 21 against the soundboard 1, but the electromagnetic drive unit 21 may be pulled toward the soundboard 1. In this case, one or more elastic bodies that pull the electromagnetic drive unit 21 are bridged between the support column 3 and the electromagnetic drive unit 21.

上記連結ワイヤー2は棒のようなもので、電磁駆動ユニット21を響板1に向かって押し付けるものでもよい。この場合、付勢板バネ5は、電磁駆動ユニット21を、響板1に向かってではなく取付け具4に向かって付勢する。そして、付勢板バネ5は、電磁駆動ユニット21と取付け具4との間において両者を引き合うように付勢する。   The connecting wire 2 is like a rod, and may press the electromagnetic drive unit 21 toward the soundboard 1. In this case, the urging plate spring 5 urges the electromagnetic drive unit 21 not toward the soundboard 1 but toward the fixture 4. The urging plate spring 5 urges the electromagnetic drive unit 21 and the fixture 4 to attract each other.

本件発明の装置を取り付ける楽器は、アップライトピアノのほか、グランドピアノでもよい。この場合、響板1はほぼ垂直方向/ほぼ縦向きではなくほぼ水平方向/ほぼ横向きに配置されるので、電磁駆動ユニット21及び取付け具4もほぼ横向き/ほぼ水平方向向きにされて取り付けられる。   The musical instrument to which the apparatus of the present invention is attached may be a grand piano in addition to an upright piano. In this case, the soundboard 1 is arranged in a substantially horizontal / substantially horizontal direction instead of a substantially vertical / substantially vertical direction, so that the electromagnetic drive unit 21 and the fixture 4 are also mounted in a substantially horizontal / substantially horizontal direction.

付勢板バネ(付勢体)5による電磁駆動ユニット21の付勢は、取付け具4に向かってより、響板1に向かっての方がよい。なぜなら、電磁駆動ユニット21が響板1に押し付けられれば、電磁駆動ユニット21の振動が響板1に抜けなく伝達され、響板1の音質が悪くなることがない。   The biasing of the electromagnetic drive unit 21 by the biasing plate spring (biasing body) 5 is better toward the soundboard 1 than toward the fixture 4. This is because if the electromagnetic drive unit 21 is pressed against the soundboard 1, the vibration of the electromagnetic drive unit 21 is transmitted to the soundboard 1 without falling out, and the sound quality of the soundboard 1 does not deteriorate.

逆に、電磁駆動ユニット21が取付け具4に押し付けられれば、電磁駆動ユニット21の振動板23の当接体8と響板1とが瞬間的に離間してしまうことが生じ、電磁駆動ユニット21の振動が響板1に伝わるときに抜けが生じてしまい、響板1の音質が悪くなることがある。   On the contrary, if the electromagnetic drive unit 21 is pressed against the fixture 4, the contact body 8 of the diaphragm 23 of the electromagnetic drive unit 21 and the soundboard 1 may be momentarily separated from each other. When the vibration is transmitted to the soundboard 1, the sound may be lost, and the sound quality of the soundboard 1 may be deteriorated.

上記響板1が複数の場合には、複数の電磁駆動ユニット21、連結ワイヤー2、取付け具4、付勢板バネ5、連結具7、当接体8、着脱レバー35または/及びツィータ33が複数の響板1それぞれに設けられる。この場合、複数の連結ワイヤー2が1つの着脱レバー35に連結されても良い。   When there are a plurality of soundboards 1, a plurality of electromagnetic drive units 21, connection wires 2, attachments 4, urging plate springs 5, connection members 7, contact bodies 8, detachable levers 35 and / or tweeters 33 are provided. Provided in each of the plurality of soundboards 1. In this case, a plurality of connecting wires 2 may be connected to one detachable lever 35.

電磁駆動ユニット21及び取付け具4の取付け位置は、響板1の端部ではなく、中央に近いところまたは中央でも良いし、ツィータ33は響板1の中央ではなく、端部に近いところまたは端部に近いところでも良い。電磁駆動ユニット21及び取付け具4またはツィータ33は、1つの響板1に複数取り付けられてもよい。この場合、電磁駆動ユニット21及び取付け具4またはツィータ33は、響板1の両端部の互いに対称な位置に取り付けられる。   The mounting position of the electromagnetic drive unit 21 and the fixture 4 may not be at the end of the soundboard 1 but at the center or near the center, and the tweeter 33 is not at the center of the soundboard 1 but near or at the end. It may be close to the department. A plurality of electromagnetic drive units 21 and attachments 4 or tweeters 33 may be attached to one soundboard 1. In this case, the electromagnetic drive unit 21 and the fixture 4 or the tweeter 33 are attached to symmetrical positions at both ends of the soundboard 1.

着脱レバー(離間体)35には、電磁駆動ユニット21を響板1に着脱させる連結ワイヤー(離間体)2のほか、消音ピアノの消音/発音を切り換えるための切換ワイヤーも連結されても良い。この場合、消音ピアノの発音時(アコーステック発音時)には、電磁駆動ユニット21の振動板23が響板1から離間され、消音ピアノの消音時(電子発音時)には、電磁駆動ユニット21の振動板23が響板1に当接される。   In addition to the connecting wire (separating body) 2 for attaching and detaching the electromagnetic drive unit 21 to / from the soundboard 1, the detachable lever (separating body) 35 may also be connected to a switching wire for switching between mute / sound generation of the silencer piano. In this case, the diaphragm 23 of the electromagnetic drive unit 21 is separated from the soundboard 1 when the mute piano is sounded (acoustic sound is generated), and the electromagnetic drive unit 21 is sounded when the mute piano is muffled (electronic sound). The diaphragm 23 is brought into contact with the soundboard 1.

この消音ピアノの消音時(電子発音時)でも、さらに電気的に切り換えられ、音源ユニット36からの楽音信号が電磁駆動ユニット21に送られるか、若しくはヘッドフォン(図示せず)または外部スピーカー(図示せず)へ送られる。   Even when the mute piano is muted (electronically sounded), it is further electrically switched, and a musical tone signal from the sound source unit 36 is sent to the electromagnetic drive unit 21, or headphones (not shown) or an external speaker (not shown). Z)).

上記複数種類の楽音からなる楽音信号は、複数種類の楽器、音色、音高または/及びタッチの楽音の信号からなっており、ポリフォニックに発音される楽音の信号であり、低音、中音、高音の各周波数帯域の楽音が含まれている。このような楽音信号には、楽器の弦自体、管自体、打自体の部分の楽音の信号ほか、響板部分の楽音の信号も含まれるが、弦自体、管自体、打自体の部分の楽音の信号のみでもよいし、響板部分の楽音の信号のみでもよい。   The musical tone signal composed of plural types of musical tones is composed of plural types of musical instruments, timbres, tone pitches and / or touch musical tone signals, and is a tone signal that is polyphonically generated. The tone of each frequency band is included. Such musical tone signals include the musical tone signal of the instrument string itself, the pipe itself, and the percussion part, as well as the musical tone signal of the soundboard part. Or only the sound signal of the soundboard part.

(8)他の発明の効果
[2]上記当接部材の大きさは電磁駆動体の駆動部分の大きさより小さいことを特徴とする請求項1記載の楽音装置。これにより、当接体が電磁駆動体の駆動部分の周縁からはみ出さない。もしはみ出ると、このはみ出し部分の音響伝達/振動伝達の特性と、はみ出ていない部分の音響伝達/振動伝達の特性とが異なってしまい、当接体全体の音響伝達/振動伝達の特性が均一とならず、響板から放音される音質が劣化する。
(8) Effects of other inventions
[2] The musical sound device according to [1], wherein the size of the contact member is smaller than the size of the drive portion of the electromagnetic drive body. Thereby, the contact body does not protrude from the periphery of the drive portion of the electromagnetic drive body. If it protrudes, the characteristics of the sound transmission / vibration transmission of the protruding part will be different from the characteristics of the sound transmission / vibration transmission of the part that does not protrude, and the sound transmission / vibration transmission characteristics of the entire contact body will be uniform. In other words, the sound quality emitted from the soundboard deteriorates.

[3]上記響板には音を放射する放音体/ツィータが当該響板から離間しないように接合され、 上記複数種類の楽音からなる楽音信号のうち、低音成分が上記電磁駆動体に送られ、当該楽音信号のうち、高音部分が上記放音体に送られることを特徴とする請求項1または2記載の楽音装置。これにより、高音は、電磁駆動体を通じて響板から放射せず、放音体/ツィータから直接放射されるので、高音の減衰が少なくなる。 [3] A sound emitting body / tweeter that emits sound is joined to the soundboard so as not to be separated from the soundboard, and a low-frequency component of the sound signal composed of the plurality of types of music sounds is sent to the electromagnetic driving body. The musical tone apparatus according to claim 1 or 2, wherein a high pitch portion of the musical tone signal is sent to the sound emitting body. As a result, treble is not radiated from the soundboard through the electromagnetic driving body, but is radiated directly from the sound emitting body / tweeter, so that attenuation of the high sound is reduced.

[4]上記電磁駆動体の駆動部分の表面と、上記響板の表面とはほぼ平行であり、上記当接部材の厚さはほぼ均一であり、 上記電磁駆動体の駆動部分または/及び上記響板は上記響板よりたわみが小さく、 上記電磁駆動体の駆動部分自身は音を放射しないことを特徴とする請求項1、2または3記載の楽音装置。 [4] The surface of the drive portion of the electromagnetic drive body and the surface of the soundboard are substantially parallel, and the thickness of the contact member is substantially uniform, and / or the drive portion of the electromagnetic drive body and / or the above-mentioned 4. The musical sound device according to claim 1, wherein the soundboard has a smaller deflection than the soundboard, and the drive portion of the electromagnetic drive body does not emit sound.

このように平行であれば、電磁駆動体の駆動部分から響板への音響伝達/振動伝達の特性が均一となって、響板から放音される音質が劣化しなくなる。また、電磁駆動体の駆動部分自身は音を放射しないので、音の放射にあたっては、連結部材からの発生音を考慮する必要がなくなるし、電磁駆動体の駆動部分からの発生音も考慮する必要がなくなり、響板からの発生音だけを考慮すればよく、楽音装置全体からの発生音の分析・解析が容易になる。   If parallel in this way, the characteristics of sound transmission / vibration transmission from the drive portion of the electromagnetic driving body to the soundboard become uniform, and the sound quality emitted from the soundboard does not deteriorate. In addition, since the driving part of the electromagnetic driving body itself does not radiate sound, it is not necessary to consider the sound generated from the connecting member when emitting the sound, and it is also necessary to consider the sound generated from the driving part of the electromagnetic driving body. Therefore, only the sound generated from the soundboard needs to be considered, and analysis and analysis of the sound generated from the entire musical sound device becomes easy.

[5]上記響板は、ほぼ水平方向に延びており、複数の響板がほぼ垂直方向に並んで配置されていることを特徴とする請求項1、2、3または4記載の楽音装置。これにより、各響板からの各音の発生体が縦に並んで配置され、しかもこれら各音が平面波なので、各音ごとにつき、耳の位置が左右にずれても上下にずれても、左右の耳に音圧の差を感じにくいし、耳の位置によって 音像位置がずれることがなく、聴覚上違和感が生じないし、たとえ上記異常振動/異常音が発生しても左右の耳に音圧の差として感じられず、この異常振動/異常音が目立たず、響板から放音される音質が劣化しなくなる。 [5] The musical sound device according to [1], [2], [3], or [4], wherein the soundboard extends in a substantially horizontal direction, and a plurality of soundboards are arranged side by side in a substantially vertical direction. As a result, the sound generators from each soundboard are arranged vertically, and each sound is a plane wave, so that for each sound, the position of the ear is shifted left and right or up and down. It is difficult to feel the difference in sound pressure between the ears, the sound image position does not shift depending on the position of the ears, and there is no sense of incongruity in hearing. The abnormal vibration / abnormal sound is not noticeable as a difference, and the sound quality emitted from the soundboard does not deteriorate.

[6]上記電磁駆動体および当接部材を響板から離間または上記電磁駆動体を当接部材及び響板から離間させるときには、上記楽音信号の上記放音体への送り込みを禁止する、上記電磁駆動体および当接部材を響板に当接または上記電磁駆動体を当接部材及び響板に当接させるときには、上記楽音信号の上記放音体への送り込みを許容する切換手段をさらに備えていることを特徴とする請求項3、4または5記載の楽音装置。 [6] When the electromagnetic driving body and the abutting member are separated from the soundboard or when the electromagnetic driving body is separated from the abutting member and the soundboard, the electromagnetic signal is prohibited from being sent to the sound emitting body. When the driving body and the abutting member are brought into contact with the soundboard or when the electromagnetic driving body is brought into contact with the abutting member and the soundboard, switching means for allowing the musical sound signal to be sent to the sound emitting body is further provided. 6. A musical sound device according to claim 3, 4 or 5.

[7]上記電磁駆動体および当接部材を響板から離間または上記電磁駆動体を当接部材及び響板から離間させるときには、上記楽音信号の電磁駆動体への送り込みを禁止する、上記電磁駆動体および当接部材を響板に当接または上記電磁駆動体を当接部材及び響板に当接させるときには、上記楽音信号の電磁駆動体への送り込みを許容する切換手段をさらに備えていることを特徴とする請求項1、2、3、4または5記載の楽音装置。 [7] The electromagnetic drive, wherein when the electromagnetic drive body and the contact member are separated from the soundboard or the electromagnetic drive body is separated from the contact member and the soundboard, the musical sound signal is prohibited from being sent to the electromagnetic drive body. When the body and the abutting member are brought into contact with the soundboard or when the electromagnetic driving body is brought into contact with the abutting member and the soundboard, switching means for allowing the musical sound signal to be sent to the electromagnetic driving body is further provided. The musical sound device according to claim 1, 2, 3, 4 or 5.

[8]振動されて音を放射する楽器の響板と、複数種類の楽音からなる楽音信号を機械的変化に変換して、楽器の響板を駆動させて音を放射させる電磁駆動体と、を用いて、 上記響板より硬度が低く、当該響板より柔らかい当接部材を、上記電磁駆動体の駆動部分に接合させて上記響板に当接可能とさせるか、または上記響板に接合させて上記電磁駆動体の駆動部分に当接可能とさせ、 上記電磁駆動体を上記響板に対して付勢する付勢体を取り付け、 この付勢体の付勢に抗して、上記電磁駆動体を移動させ、上記響板に当接していた上記当接部材を当該響板から離間させるか、または上記電磁駆動体の駆動部分に当接していた上記当接部材を当該駆動部分から離間させ、さらにこの離間状態を保持し、その上この保持状態を解除して上記当接を許容する離間体を取り付けることを特徴とする楽音装置の生産方法。 [8] An instrument sound board that oscillates and emits sound, an electromagnetic drive that converts a musical sound signal composed of multiple types of musical sounds into mechanical changes, and drives the instrument sound board to emit sound, A contact member that is lower in hardness than the soundboard and softer than the soundboard is bonded to the drive portion of the electromagnetic driving body so as to be able to contact the soundboard, or is bonded to the soundboard. The electromagnetic drive body is made contactable with the drive portion, and a biasing body that biases the electromagnetic drive body against the soundboard is attached, and the electromagnetic drive body is resisted against the biasing of the biasing body. The drive body is moved, and the contact member that is in contact with the soundboard is separated from the soundboard, or the contact member that is in contact with the drive portion of the electromagnetic drive body is separated from the drive portion. In addition, the separated state is held, and further, the held state is released to The method of producing musical sound and wherein the attaching the spacing member to permit.

[9]上記当接部材の硬度(硬さ)は、上記響板、電磁駆動体の駆動部分の硬度(硬さ)の2/3乃至1/10、望ましくは1/2乃至1/5、より望ましくは1/3乃至1/4であることを特徴とする請求項1、2、3、4、5または6記載の楽音装置。これにより、響板と電磁駆動体の駆動部分とがぶつかりあって共振による異常振動/異常音が発生してしまうことがなくなり、響板から発せられる楽音がクリアになり、響板から放音される音質が劣化しなくなる。 [9] The hardness (hardness) of the abutting member is 2/3 to 1/10, preferably 1/2 to 1/5 of the hardness (hardness) of the driving portion of the soundboard and electromagnetic driving body. 7. The musical tone device according to claim 1, wherein the musical tone device is more preferably 1/3 to 1/4. As a result, the sound board and the drive part of the electromagnetic drive body do not collide, and abnormal vibration / abnormal sound due to resonance does not occur, and the musical sound emitted from the sound board is cleared and emitted from the sound board. Sound quality will not deteriorate.

電磁駆動体が響板に当接されたり離間されたりして、電子発音ができるとともに、アコースティック発音時の響板から放音される音質が劣化されない。電子発音時には、電磁駆動ユニット(電磁駆動体)21及び当接体8は付勢板バネ(付勢体)5によって響板1に付勢され、電磁駆動ユニット21によって響板1が楽音信号に基づいて振動・発音される。アコースティック発音時には、着脱レバー(離間体)35によって連結ワイヤー(離間体)2が引かれ、電磁駆動ユニット21及び当接体8が響板1から離間され、響板1の音が当接体8に伝わらず響音1の音が劣化しない。   The electromagnetic driving body is brought into contact with or separated from the sound board, so that electronic sound can be generated and the sound quality emitted from the sound board during acoustic sound generation is not deteriorated. At the time of electronic sound generation, the electromagnetic drive unit (electromagnetic drive body) 21 and the contact body 8 are urged to the sound board 1 by the urging plate spring (bias body) 5, and the sound drive board 21 turns the sound board 1 into a musical tone signal. Based on vibration and sound. At the time of acoustic sounding, the connecting wire (spacer) 2 is pulled by the detachable lever (spacer) 35, the electromagnetic drive unit 21 and the contact body 8 are separated from the soundboard 1, and the sound of the soundboard 1 is heard from the contact body 8. The sound of the sound 1 is not deteriorated.

アップライトピアノ31の楽器の全体構造を示す。The overall structure of the instrument of the upright piano 31 is shown. 電磁駆動ユニット(電磁駆動体)21の取付け構造を示し、当接体8が響板1から離間される状態を示す。The attachment structure of the electromagnetic drive unit (electromagnetic drive body) 21 is shown, and the state in which the contact body 8 is separated from the soundboard 1 is shown. 電磁駆動ユニット(電磁駆動体)21の取付け構造を示し、当接体8が響板1に当接される状態を示す。The attachment structure of the electromagnetic drive unit (electromagnetic drive body) 21 is shown, and the state in which the contact body 8 is in contact with the soundboard 1 is shown. 当接体8の響板1への離間/当接を切り換える、着脱レバー(離間体)35を示す。An attachment / detachment lever (separation body) 35 that switches the separation / contact of the contact body 8 to the soundboard 1 is shown.

符号の説明Explanation of symbols

1…響板、2…連結ワイヤー(離間体)、
3…支柱、4…取付け具、
5…付勢板バネ(付勢体)、6…ボルト、
7…連結具、8…当接体(当接部材)、
11…回動部、12…握り部、
13…保持突起、21…電磁駆動ユニット(電磁駆動体)、
22…本体ケース、23…振動板(駆動部分)、
31…アップライトピアノ、32…底板、
33…ツィータ(スピーカー)(放音体)、34…棚、
35…着脱レバー(離間体)、36…音源ユニット、
37…アンプボックス、38…電源スイッチ(切換手段)。
1 ... sound board, 2 ... connecting wire (spacer),
3 ... post, 4 ... mounting tool,
5 ... Biasing leaf spring (biasing body), 6 ... Bolt,
7 ... connector, 8 ... contact body (contact member),
11 ... rotating part, 12 ... grip part,
13 ... Holding projection, 21 ... Electromagnetic drive unit (electromagnetic drive body),
22 ... Main body case, 23 ... Diaphragm (drive part),
31 ... upright piano, 32 ... bottom plate,
33 ... tweeter (speaker) (sounding body), 34 ... shelf,
35 ... Detachable lever (spacer), 36 ... Sound source unit,
37 ... Amplifier box, 38 ... Power switch (switching means).

Claims (7)

振動されて音を放射する楽器の響板と、
複数種類の楽音からなる楽音信号を機械的変化に変換して、上記楽器の響板を駆動させて音を放射させる電磁駆動体と、
この電磁駆動体の駆動部分に接合され、上記響板に当接可能であるか、または上記響板に接合され、上記電磁駆動体の駆動部分に当接可能な、当該響板よりたわみが多く、当該響板より柔らかい当接部材と、
上記電磁駆動体を上記響板に対して付勢する付勢体と、
この付勢体の付勢に抗して、上記電磁駆動体を移動させ、上記響板に当接していた上記当接部材を当該響板から離間させるか、または上記電磁駆動体の駆動部分に当接していた上記当接部材を当該駆動部分から離間させ、さらにこの離間状態を保持し、その上この保持状態を解除して上記当接を許容する離間体とを備えたことを特徴とする楽音装置。
An instrument soundboard that oscillates and emits sound,
An electromagnetic driving body that converts a musical sound signal composed of multiple types of musical sounds into a mechanical change, and drives the soundboard of the musical instrument to emit sound;
Bonded to the drive part of this electromagnetic drive and can contact the soundboard, or joined to the soundboard and can contact the drive part of the electromagnetic drive more flexure than the soundboard A contact member softer than the soundboard;
An urging body for urging the electromagnetic driving body against the soundboard;
The electromagnetic driving body is moved against the urging force of the urging body, and the contact member that has been in contact with the soundboard is separated from the soundboard, or the drive portion of the electromagnetic drive body is The contact member that has been in contact is spaced apart from the drive portion, and is further provided with a separate body that maintains the separated state and releases the retained state to allow the contact. Musical device.
上記当接部材の大きさは電磁駆動体の駆動部分の大きさより小さいことを特徴とする請求項1記載の楽音装置。   2. A musical sound device according to claim 1, wherein the size of the contact member is smaller than the size of the driving portion of the electromagnetic driving body. 上記響板には音を放射する放音体が当該響板から離間しないように接合され、
上記複数種類の楽音からなる楽音信号のうち、低音成分が上記電磁駆動体に送られ、当該楽音信号のうち、高音部分が上記放音体に送られることを特徴とする請求項1または2記載の楽音装置。
A sound emitting body that emits sound is joined to the soundboard so as not to be separated from the soundboard,
The low frequency component is sent to the electromagnetic driving body among the musical tone signals composed of the plurality of types of musical sounds, and the high pitched portion of the musical tone signal is sent to the sound emitting body. Musical sound device.
上記電磁駆動体の駆動部分の表面と、上記響板の表面とはほぼ平行であり、上記当接部材の厚さはほぼ均一であり、
上記電磁駆動体の駆動部分または/及び上記響板は上記響板よりたわみが小さく、
上記電磁駆動体の駆動部分自身は音を放射しないことを特徴とする請求項1、2または3記載の楽音装置。
The surface of the drive part of the electromagnetic drive body and the surface of the soundboard are substantially parallel, and the thickness of the contact member is substantially uniform,
The driving portion of the electromagnetic driving body and / or the soundboard has a smaller deflection than the soundboard,
4. A musical sound device according to claim 1, wherein the driving portion of the electromagnetic driving body does not emit sound.
上記響板は、ほぼ水平方向に延びており、複数の響板がほぼ垂直方向に並んで配置されていることを特徴とする請求項1、2、3または4記載の楽音装置。   5. The musical sound device according to claim 1, wherein the soundboard extends in a substantially horizontal direction, and a plurality of soundboards are arranged side by side in a substantially vertical direction. 上記電磁駆動体および当接部材を響板から離間または上記電磁駆動体を当接部材及び響板から離間させるときには、上記楽音信号の上記放音体への送り込みを禁止する、上記電磁駆動体および当接部材を響板に当接または上記電磁駆動体を当接部材及び響板に当接させるときには、上記楽音信号の上記放音体への送り込みを許容する切換手段をさらに備えていることを特徴とする請求項3、4または5記載の楽音装置。   When the electromagnetic drive body and the contact member are separated from the soundboard, or when the electromagnetic drive body is separated from the contact member and the soundboard, the electromagnetic drive body is prohibited from being sent to the sound emitting body. When the contact member is brought into contact with the sound board or the electromagnetic driving body is brought into contact with the contact member and the sound board, switching means for allowing the musical sound signal to be sent to the sound emitting body is further provided. 6. A musical sound device according to claim 3, 4 or 5. 振動されて音を放射する楽器の響板と、複数種類の楽音からなる楽音信号を機械的変化に変換して、楽器の響板を駆動させて音を放射させる電磁駆動体と、を用いて、
上記響板より硬度が低く、当該響板より柔らかい当接部材を、上記電磁駆動体の駆動部分に接合させて上記響板に当接可能とさせるか、または上記響板に接合させて上記電磁駆動体の駆動部分に当接可能とさせ、 上記電磁駆動体を上記響板に対して付勢する付勢体を取り付け、 この付勢体の付勢に抗して、上記電磁駆動体を移動させ、上記響板に当接していた上記当接部材を当該響板から離間させるか、または上記電磁駆動体の駆動部分に当接していた上記当接部材を当該駆動部分から離間させ、さらにこの離間状態を保持し、その上この保持状態を解除して上記当接を許容する離間体を取り付けることを特徴とする楽音装置の生産方法。
A sound board of a musical instrument that emits sound by vibration, and an electromagnetic driver that converts a musical sound signal composed of multiple types of musical sounds into a mechanical change and drives the sound board of the musical instrument to emit sound. ,
An abutting member having a hardness lower than that of the soundboard and softer than the soundboard can be joined to the drive portion of the electromagnetic driving body so as to be able to contact the soundboard, or can be joined to the soundboard and the electromagnetic wave An urging body that urges the electromagnetic driving body against the soundboard is attached, and the electromagnetic driving body is moved against the urging force of the urging body. The contact member that has been in contact with the soundboard is separated from the soundboard, or the contact member that has been in contact with the drive portion of the electromagnetic driving body is separated from the drive portion, and this A method for producing a musical sound device, comprising: maintaining a separated state; and attaching a separating body that releases the retained state and allows the contact.
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