JP2010145934A

JP2010145934A - Music score plate-supporting structure of musical instrument

Info

Publication number: JP2010145934A
Application number: JP2008325687A
Authority: JP
Inventors: Akito Oba; 聡斗大庭; Masahiro Nagayama; 昌弘長山
Original assignee: Yamaha Corp
Current assignee: Yamaha Corp
Priority date: 2008-12-22
Filing date: 2008-12-22
Publication date: 2010-07-01
Anticipated expiration: 2028-12-22
Also published as: JP5212083B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a music score plate-supporting structure capable of reducing the size of an opening part penetrated by a supporting tool which is formed in a musical instrument body or the like and capable of improving the appearance of the musical instrument. <P>SOLUTION: The music score plate-supporting structure includes: a music score plate 40 which can rotate centering on a rotation supporting point 41; a supporting rod 60 in which a music score plate side connection part 61 at one end 60a thereof is rotatably connected to the music score plate 40 and a body-side connection part 62 at the other end 60b is connected movably to a guideway 51 of a guide member 50 of a body part 10; and a sound board 30 which has an opening part 33 to which the supporting rod 60 is penetrated and is arranged between the music score plate 40 and a guide member 50. When the music score plate 40 is in a falling state, the body side connection part 62 of the supporting rod 60 is arranged rearward and downward rather than to the side of the music score plate-side connection part 61 based on the rotation supporting point 41, and a stop part 55 in the falling state which stops the body side connection part 62 provided in the guide part 50 is located rearward rather than to a rear end of the opening part 33. Therefore, the depth dimension of the opening part 33 is made small. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、ピアノなどの鍵盤楽器に取り付けた譜面板の支持に用いて好適な楽器の譜面板支持構造に関する。 The present invention relates to a musical score board support structure suitable for use in supporting a musical score board attached to a keyboard musical instrument such as a piano.

従来、例えば特許文献１に示すように、鍵盤楽器に取り付けた譜面板を支持するための譜面板支持構造がある。特許文献１に記載の譜面板支持構造は、譜面板の下方の左右に設けたガイド部材で譜面板下端に設けた軸部をガイドすることで、譜面板を立設姿勢と倒伏姿勢とに切り換えて支持可能としている。また、この支持構造において、軸部を多段階に停止させる複数のストッパー部をガイド部に形成すれば、譜面板の立設角度を多段階に調節可能となる。
特開２００５−１８１９０５号公報 Conventionally, as shown in Patent Document 1, for example, there is a music board support structure for supporting a music board attached to a keyboard instrument. The music board support structure described in Patent Document 1 switches the music board between a standing posture and a lying posture by guiding the shaft provided at the lower end of the music plate with guide members provided on the left and right of the music board. Can be supported. Further, in this support structure, if a plurality of stopper portions for stopping the shaft portion in multiple stages are formed in the guide portion, the standing angle of the musical score plate can be adjusted in multiple stages.
JP 2005-181905 A

ところで、このような譜面板支持構造では、楽器本体の内外に設置したガイド部材と譜面板との間に介在する外装部材（外装板）に、譜面板とガイド部材とを繋ぐための開口部が形成されている。この開口部は、楽器の外観の一部をなすうえ、開口部を覗き込むようにした場合、ガイド部材など楽器の内部構造の一部が外から見えることもある。そのため、特に高級感が求められる上位機種の鍵盤楽器においては、開口部を出来るだけ小さくして目立たないようにすることが望ましい。 By the way, in such a music board support structure, an opening for connecting the music board and the guide member to an exterior member (exterior board) interposed between the guide member installed inside and outside the musical instrument body and the music board is provided. Is formed. In addition to forming a part of the appearance of the musical instrument, the opening part may see a part of the internal structure of the musical instrument such as a guide member from the outside when the opening part is looked into. For this reason, it is desirable to make the opening as small as possible so that it is not particularly noticeable in high-end keyboard instruments that require a high-class feeling.

ところが、特許文献１に記載された譜面板支持構造では、ガイド部材の案内路は、譜面板の軸部を開口部の直下の該開口部と平行な面（外装板と平行な面）内でのみ直線移動させるように形成されている。この構造では、軸部の移動方向（この場合は、楽器本体の前後方向）における開口部の長さ寸法を軸部の移動寸法とほぼ同じかそれ以上としなければならない。これにより、開口部の奥行寸法が大きくなるため、開口部が目立ち易くなり、楽器の良好な外観が損なわれるおそれがあった。 However, in the musical score plate support structure described in Patent Document 1, the guide path of the guide member is such that the shaft portion of the musical score plate is parallel to the opening portion directly below the opening portion (a surface parallel to the exterior plate). It is formed to move only in a straight line. In this structure, the length of the opening in the direction of movement of the shaft (in this case, the longitudinal direction of the instrument body) must be approximately the same as or greater than the size of movement of the shaft. As a result, the depth of the opening is increased, so that the opening is easily noticeable, and the good appearance of the musical instrument may be impaired.

本発明は上述の点に鑑みてなされたものでありその目的は、譜面板の傾斜角度を調節可能でありながら、楽器本体などに形成する開口部の寸法を小さくでき、楽器の外観を良好にできる譜面板支持構造を提供することにある。 The present invention has been made in view of the above points, and its purpose is to make it possible to reduce the size of the opening formed in the instrument body and the like, while improving the inclination angle of the musical score board, and to improve the appearance of the instrument. The object is to provide a musical score board support structure.

上記課題を解決するための本発明は、楽器本体（１０）に対して支点（４１）を中心に回動することで、立設姿勢と倒伏姿勢との間で傾斜角度を変更可能な譜面板（４０）と、一端（６０ａ）に設けた譜面板側連結部（６１）が譜面板（４０）に対して回動可能に連結され、他端（６０ｂ）に設けた本体側連結部（６２）が楽器本体（１０）に対して移動可能に連結されており、該本体側連結部（６２）の移動により、譜面板（４０）の傾斜角度を切り換えて支持可能な長尺状の支持具（６０）と、楽器本体（１０）に設けられ、支持具（６０）の本体側連結部（６２）を移動可能に係合させるガイド部（５０）と、ガイド部（５０）に設けた本体側連結部（６２）の移動を案内する案内路（５１）と、譜面板（４０）を立設姿勢で支持する際に案内路（５１）の途中で本体側連結部（６２）を係止するためのストッパー部（５６，５７）と、支持具（６０）を貫通させる開口部（３３）を有し、譜面板（４０）とガイド部（５０）との間に配置される中間部材（３０）と、を備える楽器の譜面板支持構造であって、譜面板（４０）が倒伏状態のとき、支点（４１）を基準として支持具（６０）の本体側連結部（６２）が譜面板側連結部（６１）よりも後方かつ下方に配置され、かつ、ガイド部（５０）に設けられた本体側連結部（６２）を停止させる倒伏時停止部（５５）は、開口部（３３）の後端（３３ａ）よりも後側に位置するように構成したことを特徴とする。なお、ここでの括弧内の符号は、後述する実施形態の対応する構成要素の符号を本発明の一例として示したものである。 The present invention for solving the above-mentioned problems is a musical score plate capable of changing an inclination angle between a standing posture and a lying posture by rotating about a fulcrum (41) with respect to the musical instrument body (10). (40) and the musical score board side connecting portion (61) provided at one end (60a) are rotatably connected to the musical score plate (40), and the main body side connecting portion (62) provided at the other end (60b). ) Is movably connected to the musical instrument main body (10), and a long support tool that can be supported by switching the inclination angle of the musical score plate (40) by the movement of the main body side connecting portion (62). (60), a guide part (50) provided on the instrument main body (10) and movably engaged with the main body side connecting part (62) of the support (60), and a main body provided on the guide part (50) The guide path (51) for guiding the movement of the side connecting portion (62) and the musical score board (40) are supported in a standing posture. Have a stopper part (56, 57) for locking the main body side connecting part (62) in the middle of the guide path (51), and an opening part (33) for penetrating the support tool (60). (40) and an intermediate member (30) disposed between the guide portion (50), and a musical score plate support structure for a musical instrument, and when the musical score plate (40) is in a lying state, the fulcrum (41) The main body side connecting portion (62) of the support (60) is disposed rearward and lower than the musical score plate side connecting portion (61), and the guide side (50) is provided with the main body side connecting portion ( 62), the inclining stop portion (55) is configured to be positioned on the rear side of the rear end (33a) of the opening portion (33). In addition, the code | symbol in parenthesis here has shown the code | symbol of the corresponding component of embodiment mentioned later as an example of this invention.

本発明にかかる譜面板支持構造によれば、譜面板が倒伏状態のとき、譜面板の回動支点を基準として、支持具はその一端の譜面板側連結部から他端の本体側連結部に向かって後側に延び、かつ、本体側連結部が位置するガイド部材の倒伏時停止部が開口部の後端よりも後側に配置されている。これにより、支点から開口部に向かう前後方向における開口部の寸法（開口部の奥行寸法）を小さくすることが可能となる。したがって、本体側連結部の移動により譜面板の傾斜角度を調節可能としながらも、楽器本体などに形成する開口部の寸法を小さくできる。これにより、楽器の外観の一部をなす開口部、あるいは該開口部から見える楽器本体の内部構造を目立たなくできるので、楽器の外観を良好にすることができる。 According to the music board support structure according to the present invention, when the music board is in a lying state, the support tool is moved from the music board side connecting portion at one end to the main body side connecting portion at the other end with reference to the rotation fulcrum of the music plate. The stop portion at the fall of the guide member that extends rearward toward the main body side connecting portion is disposed behind the rear end of the opening. This makes it possible to reduce the size of the opening in the front-rear direction from the fulcrum to the opening (depth of the opening). Accordingly, it is possible to reduce the size of the opening formed in the musical instrument main body while allowing the inclination angle of the musical score plate to be adjusted by moving the main body side connecting portion. Thereby, since the opening part which makes a part of the external appearance of a musical instrument, or the internal structure of the musical instrument main body visible from this opening part can be made inconspicuous, the external appearance of a musical instrument can be made favorable.

また、この譜面板支持構造では、譜面板（４０）を倒伏姿勢から立設姿勢に移行させる際、支持具（６０）の本体側連結部（６２）を支点（４１）に近い前側かつ開口部（３３）に近い上側に向かって移動させるように形成するとよい。これによれば、譜面板の姿勢を倒伏姿勢から立設姿勢に切り換える際、支持具がその長手方向に沿って移動するようになるので、開口部における支持具の位置（支点を基準とする前後方向の位置）の移動量を少なくできる。したがって、開口部の寸法を小さくすることが可能となる。 Further, in this musical score plate support structure, when the musical score plate (40) is shifted from the lying posture to the standing posture, the main body side connecting portion (62) of the support tool (60) is located on the front side and the opening portion close to the fulcrum (41). It is good to form so that it may move toward the upper side near (33). According to this, when changing the posture of the music board from the lying posture to the standing posture, the support tool moves along its longitudinal direction, so the position of the support tool in the opening (before and after the fulcrum as a reference) The amount of movement in the direction) can be reduced. Therefore, it is possible to reduce the size of the opening.

また、上記の譜面板支持構造では、ガイド部（５０）のストッパー部（５６，５７）は、倒伏時停止部（５５）よりも支点（４１）に近い前側かつ開口部（３３）に近い上側の位置に設けるとよい。これによれば、譜面板を倒伏姿勢から立設姿勢に移行させる際、倒伏時停止部からストッパー部に移動する本体側連結部が支持具の長手方向に沿って移動するようになる。したがって、開口部内における支持具の位置（支点を基準とする前後方向の位置）の移動量を少なく抑えながらも、譜面板の立設角度の変化量を大きく取ることが可能となるので、譜面板の立設角度の調節が行い易くなる。 Further, in the musical score plate support structure described above, the stopper portions (56, 57) of the guide portion (50) are closer to the front side closer to the fulcrum (41) and closer to the opening portion (33) than to the stop portion (55) when lying down. It is good to provide in the position. According to this, when the musical score plate is shifted from the lying posture to the standing posture, the main body side connecting portion that moves from the lying stop portion to the stopper portion moves along the longitudinal direction of the support. Therefore, it is possible to make a large change in the standing angle of the music board while suppressing the movement of the position of the support tool in the opening (the position in the front-rear direction with respect to the fulcrum) as small as possible. It becomes easy to adjust the standing angle.

また、上記の譜面板支持構造では、ストッパー部（５６，５７）は、譜面板（４０）を異なる複数の立設角度で支持可能となるように複数箇所に設けられており、該複数箇所のストッパー部（５６，５７）は、対応する譜面板（４０）の立設角度が大きい程、支点（４１）に近い前側かつ開口部（３３）に近い上側に配置するとよい。これによれば、譜面板の立設角度を複数段階に調節可能となるので、譜面板の使い勝手を向上させることができる。加えて、支持具の本体側連結部が支点に向かって移動するようになるので、開口部内における支持具の位置（支点を基準とする前後方向の位置）の移動量を少なく抑えながら、譜面板の立設角度の変化量を大きくすることが可能となる。したがって、譜面板の立設角度の調節が行い易くなる。 Further, in the above-described music board support structure, the stopper portions (56, 57) are provided at a plurality of locations so as to be able to support the music plate (40) at a plurality of different standing angles. The stopper portions (56, 57) are preferably arranged on the front side near the fulcrum (41) and on the upper side near the opening (33) as the standing angle of the corresponding musical score plate (40) is larger. According to this, since the standing angle of the music score board can be adjusted in a plurality of stages, the usability of the music score board can be improved. In addition, since the connecting part on the main body side of the support tool moves toward the fulcrum, the music score board is kept while keeping the movement amount of the support tool in the opening (the position in the front-rear direction relative to the fulcrum) small. It is possible to increase the amount of change in the standing angle. Therefore, it becomes easy to adjust the standing angle of the musical score plate.

また、上記の譜面板支持構造では、案内路（５１）は、本体側連結部（６２）に設けた突起状の係合部（６２ａ）を案内する壁面（５１ａ）を有しており、案内路（５１）におけるストッパー部（５７）に対向する壁面（５１ａ）には、ストッパー部（５７）に向かって突出する誘導壁（５９）を設けるとよい。これによれば、案内路を移動する突起状の係合部をストッパー部へ確実に導入できるようになる。したがって、譜面板を所定の立設角度で確実にロックできるようになり、譜面板の使い勝手が向上する。 In the musical score plate support structure described above, the guide path (51) has a wall surface (51a) for guiding the protruding engaging portion (62a) provided in the main body side connecting portion (62). A guide wall (59) protruding toward the stopper portion (57) may be provided on the wall surface (51a) facing the stopper portion (57) in the path (51). According to this, it becomes possible to reliably introduce the protrusion-like engaging portion that moves along the guide path into the stopper portion. Therefore, the music score board can be reliably locked at a predetermined standing angle, and the usability of the music score board is improved.

また、上記の譜面板支持構造では、支持具（６０）は、譜面板（４０）の回動方向に対する幅方向の中間を支持する単一の棒状部材（６０）であり、ガイド部（５０）は、支持具（６０）の一方の側部のみに設けるとよい。これによれば、支持具及びガイド部を一つずつ設ければよいので、譜面板支持構造の部品点数を少なくでき、楽器の製造コストを抑えることができる。 In the musical score plate support structure, the support tool (60) is a single bar-like member (60) that supports the middle of the width direction with respect to the rotation direction of the musical score plate (40), and the guide portion (50). Is preferably provided only on one side of the support (60). According to this, since it is only necessary to provide one support tool and one guide part, the number of parts of the music board support structure can be reduced, and the manufacturing cost of the musical instrument can be suppressed.

本発明にかかる楽器の譜面板支持構造によれば、譜面板の立設角度を良好に調節可能でありながら、楽器本体などに形成する開口部の寸法を小さくできるので、楽器の外観を良好にできる。 According to the musical score board support structure of the musical instrument according to the present invention, it is possible to reduce the size of the opening formed in the musical instrument main body and the like while the angle of the musical score board can be satisfactorily adjusted. it can.

以下、添付の図面を参照して本発明の実施形態を詳細に説明する。図１は、本発明の一実施形態にかかる譜面板支持構造を備えたグランドピアノ型の外観を有する電子ピアノを示す図で、電子ピアノの本体部（楽器本体）１０を一部分解した状態で示す分解斜視図である。また、図２は、電子ピアノの本体部１０に取り付けた譜面板４０及びその支持構造を示す概略側断面図である。以下の説明では、電子ピアノの本体部１０における演奏者側を手前側あるいは前側、演奏者側と反対側を後側と称し、後述する鍵盤１３が備える鍵１３ａの配列方向を横方向あるいは左右方向と称す。また、上下というときは、図１に示す状態での本体部１０の上下方向を示すものとする。さらに、各部材における向きや方向を示す場合も、各部材を本体部１０に取り付けた状態での本体部１０の向きで示す。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a view showing an electronic piano having a grand piano-type appearance provided with a music board support structure according to an embodiment of the present invention, and shows a partially disassembled body portion (instrument body) 10 of the electronic piano. It is a disassembled perspective view. FIG. 2 is a schematic sectional side view showing the musical score board 40 attached to the main body 10 of the electronic piano and its supporting structure. In the following description, the player side in the main body 10 of the electronic piano is referred to as the front side or the front side, and the side opposite to the player side is referred to as the rear side, and the arrangement direction of the keys 13a provided on the keyboard 13 described later is the horizontal direction or the horizontal direction. Called. Moreover, when it says up and down, it shall show the up-down direction of the main-body part 10 in the state shown in FIG. Furthermore, also when showing the direction and direction in each member, it shows with the direction of the main-body part 10 in the state which attached each member to the main-body part 10.

本実施形態の譜面台支持構造は、電子ピアノの本体部１０に対して回動可能に取り付けられた譜面板４０と、譜面板４０を立設姿勢と倒伏姿勢とに切り換えて支持可能な支持棒（長尺状の支持具）６０と、本体部１０に設けた支持棒６０を移動可能に係合させるガイド部材（ガイド部）５０と、譜面板４０とガイド部材５０との間に配された本体部１０の外装部品である響板（中間部材）３０とを備えている。響板３０には、支持棒６０を貫通させる開口部３３が形成されている。以下、譜面板支持構造の各部の構成を順に説明する。 The music stand support structure of this embodiment includes a music plate 40 that is rotatably attached to the main body 10 of the electronic piano, and a support bar that can be supported by switching the music plate 40 between a standing posture and a lying posture. (Long support) 60, a guide member (guide portion) 50 for movably engaging the support bar 60 provided on the main body 10, and the musical score plate 40 and the guide member 50. A soundboard (intermediate member) 30 that is an exterior part of the main body 10 is provided. The soundboard 30 is formed with an opening 33 through which the support rod 60 passes. Hereinafter, the configuration of each part of the music board support structure will be described in order.

本体部１０の手前側には、複数の鍵１３ａが配列された鍵盤１３が設置されており、鍵盤１３の後側には、本体部１０の両側面を囲む横側板１２，１２と後端を囲む後側板１１とによって画成された収納部１４が設けられている。収納部１４の上部は開口１４ａになっている。開口１４ａには、一辺を支点として上下に回動することで開閉可能な大屋根が設置されるが、図１では、大屋根の図示を省略している。 A keyboard 13 in which a plurality of keys 13 a are arranged is installed on the front side of the main body 10, and lateral plates 12 and 12 surrounding the both side surfaces of the main body 10 and the rear end are provided on the rear side of the keyboard 13. A storage portion 14 defined by the surrounding rear side plate 11 is provided. The upper part of the storage part 14 is an opening 14a. In the opening 14a, a large roof that can be opened and closed by rotating up and down with one side as a fulcrum is installed, but the illustration of the large roof is omitted in FIG.

収納部１４内の後側には、図示しないスピーカボックスが設置されており、スピーカボックスの上部には、中板２０が設置されている。そして、収納部１４におけるスピーカボックスの手前側には、左右の横側板１２，１２間に架け渡された二本の角柱状の支持部材２３，２４が設置されている。支持部材２３，２４は、前後に所定間隔で互いに平行に設置されている。支持部材２３，２４の長手方向の中央、すなわち収納部１４の横方向の中央には、ガイド部材５０を取り付けてなるガイド部材取付体４６が設置されている。ガイド部材取付体４６は、支持部材２３，２４間に架け渡されたガイド部材取付具４５にガイド部材５０を取り付けた構成である。ガイド部材５０及びガイド部材取付体４６の詳細については後述する。また、支持部材２３，２４の両側近傍には、響板３０の上方に設置される装飾台３１，３１を取り付けるための装飾台取付具３２，３２が設置されている。装飾台取付具３２は、支持部材２３と支持部材２４の間に架け渡された略棒状の部材で、上方に突出する小突起状の固定片３２ａを有している。 A speaker box (not shown) is installed on the rear side of the storage unit 14, and an intermediate plate 20 is installed on the upper portion of the speaker box. Two prismatic support members 23, 24 are installed between the left and right lateral plates 12, 12 on the front side of the speaker box in the storage unit 14. The support members 23 and 24 are installed in parallel to each other at a predetermined interval in the front and rear direction. A guide member attachment body 46 to which a guide member 50 is attached is installed at the center in the longitudinal direction of the support members 23, 24, that is, at the center in the lateral direction of the storage portion 14. The guide member mounting body 46 has a configuration in which a guide member 50 is mounted on a guide member mounting tool 45 spanned between the support members 23 and 24. Details of the guide member 50 and the guide member mounting body 46 will be described later. Further, in the vicinity of both sides of the support members 23, 24, decorative base mounting tools 32, 32 for mounting the decorative bases 31, 31 installed above the soundboard 30 are installed. The decoration base fixture 32 is a substantially rod-like member that is bridged between the support member 23 and the support member 24, and has a small protrusion-like fixing piece 32a that protrudes upward.

収納部１４における中板２０の手前側には、支持部材２３，２４及びガイド部材取付体４６の上部を覆う響板（中間部材）３０が設置されている。響板３０に設けた開口部３３は、その長手方向が本体部１０の前後方向に向かう略長方形状の小貫通穴からなり、響板３０の横方向の中央に形成されている。譜面板４０は、響板３０の上面側における開口部３３に対応する位置に設置される。また、響板３０の両側には、装飾台取付具３２の固定片３２ａを貫通させるための貫通穴３４が形成されている。 A soundboard (intermediate member) 30 that covers the upper portions of the support members 23 and 24 and the guide member mounting body 46 is installed on the front side of the intermediate plate 20 in the storage unit 14. The opening 33 provided in the soundboard 30 is formed of a substantially rectangular small through hole whose longitudinal direction is directed in the front-rear direction of the main body 10, and is formed at the center in the lateral direction of the soundboard 30. The musical score plate 40 is installed at a position corresponding to the opening 33 on the upper surface side of the soundboard 30. In addition, on both sides of the soundboard 30, through holes 34 are formed for allowing the fixing pieces 32 a of the decoration base mounting tool 32 to pass therethrough.

図２に示すように、譜面板４０は、その下端４０ａに設けた回動支点４１が響板３０の手前側端部に対応する位置で支持部材２３に対して回動自在に支持されている。回動支点４１には、譜面板４０の下端４０ａを支持部材２３に対して回動自在に取り付ける蝶番４１ａが設けられている。したがって、譜面板４０は、下端４０ａの回動支点４１を中心として上端４０ｂが上下に回動することで、響板３０に沿って回動支点４１の後側に倒される倒伏姿勢と、響板３０の面（水平面）に対して所定角度を成した状態で斜めに立接される立設姿勢とを取ることが可能である。 As shown in FIG. 2, the musical score plate 40 is rotatably supported with respect to the support member 23 at a position where a rotation fulcrum 41 provided at the lower end 40 a thereof corresponds to the front end portion of the soundboard 30. . The rotation fulcrum 41 is provided with a hinge 41a for attaching the lower end 40a of the music score plate 40 to the support member 23 so as to be rotatable. Therefore, the musical score board 40 has a lying posture in which the upper end 40b is turned up and down around the rotation fulcrum 41 of the lower end 40a, and the sound board is tilted to the rear side of the rotation fulcrum 41 along the sound board 30. It is possible to take an upright posture that is obliquely erected in a state of forming a predetermined angle with respect to 30 planes (horizontal plane).

なお、譜面板４０の下端４０ａに設けた蝶番４１ａは、蝶番取付具２５を介して支持部材２３に取り付けられており、響板３０には当接していない。すなわち、回動支点４１の蝶番４１ａあるいは蝶番取付具２５と響板３０との間には、僅かな隙間が設けられている。これにより、譜面板４０やその支持構造が電子ピアノの演奏時における響板３０の振動に影響を及ぼさないようになっている。また、譜面板４０の上端４０ｂ近傍の下面４０ｄ側には、倒伏姿勢の譜面板４０と響板３０との衝突を防止するためのクッション材４２が取り付けられている。 The hinge 41 a provided at the lower end 40 a of the music score board 40 is attached to the support member 23 via the hinge attachment 25 and does not contact the soundboard 30. That is, a slight gap is provided between the hinge 41 a of the rotation fulcrum 41 or the hinge fitting 25 and the soundboard 30. Thereby, the musical score board 40 and its support structure do not affect the vibration of the soundboard 30 during the performance of the electronic piano. Further, a cushion material 42 for preventing a collision between the musical score board 40 in the lying posture and the sound board 30 is attached to the lower surface 40d side near the upper end 40b of the musical score board 40.

また、譜面板４０の上面４０ｃには、譜面を支持するための譜面受け４３けが設けられている。譜面受け４３は、譜面板４０の上面４０ｃの下端４０ａよりも若干上方の位置に取り付けられた板状の部材であり、譜面板４０の幅方向の略全体に渡る細長い板状に形成されている。譜面受け４３は、譜面板４０の上面４０ｃに蝶番４３ａで回動自在に取り付けられており、譜面板４０の上面４０ｃに対して略直交する開位置と、譜面板４０の上面４０ｃに沿う閉位置との間で回動可能となっている。 In addition, the top surface 40c of the music score plate 40 is provided with 43 music score supports for supporting the music score. The musical score holder 43 is a plate-like member attached at a position slightly above the lower end 40 a of the upper surface 40 c of the musical score board 40, and is formed in an elongated plate shape that extends over substantially the entire width of the musical score board 40. . The musical score holder 43 is rotatably attached to the upper surface 40c of the musical score plate 40 by a hinge 43a, and is in an open position substantially orthogonal to the upper surface 40c of the musical score plate 40 and a closed position along the upper surface 40c of the musical score plate 40. It is possible to rotate between.

また、譜面板４０を支持する支持棒６０は、響板３０の開口部３３を貫通しており、一端６０ａが響板３０の上方（譜面板４０側）に突出し、他端６０ｂが響板３０の下方（ガイド部材５０側）に突出している。そして、一端６０ａに設けた譜面板側連結部６１が譜面板４０の下面４０ｄに連結され、他端６０ｂに設けた本体側連結部６２が本体部１０側のガイド部材５０に連結されている。なお、支持棒６０の一端６０ａは、譜面板４０の下面４０ｄにおける幅方向の中央で上下方向の中央より若干下側の位置に連結されている。 Further, the support bar 60 that supports the musical score board 40 passes through the opening 33 of the soundboard 30, one end 60 a protrudes above the soundboard 30 (the music score board 40 side), and the other end 60 b is the soundboard 30. Projecting downward (guide member 50 side). And the musical score board side connection part 61 provided in the one end 60a is connected with the lower surface 40d of the musical score board 40, and the main body side connection part 62 provided in the other end 60b is connected with the guide member 50 on the main body part 10 side. One end 60a of the support bar 60 is connected to a position slightly below the center in the vertical direction at the center in the width direction on the lower surface 40d of the musical score plate 40.

図３（ａ）乃至（ｃ）は、ガイド部材取付体４６を示す図で、（ａ）は、ガイド部材取付体４６の平面図、（ｂ）は、（ａ）のＡ−Ａ矢視断面図、（ｃ）は、ガイド部材取付体４６の斜視図である。また、図３（ｄ）は、支持棒６０を示す斜視図である。図３（ａ）乃至（ｃ）に示すように、ガイド部材取付具４５は、支持部材２３，２４間に架け渡される細長い略薄板状の部材で、長手方向の両端にはそれぞれ、支持部材２３，２４に対して固定される固定部４５ａが設けられている。固定部４５ａは、ネジ（図２参照）４５ｂを締結固定するためのネジ穴からなる。 3A to 3C are views showing the guide member mounting body 46, where FIG. 3A is a plan view of the guide member mounting body 46, and FIG. 3B is a cross-sectional view taken along line AA in FIG. FIG. 4C is a perspective view of the guide member mounting body 46. FIG. 3D is a perspective view showing the support rod 60. As shown in FIGS. 3A to 3C, the guide member attachment 45 is a long and thin plate-like member spanned between the support members 23 and 24, and the support member 23 is provided at both ends in the longitudinal direction. , 24 is fixed. The fixing portion 45a includes a screw hole for fastening and fixing a screw (see FIG. 2) 45b.

また、ガイド部材取付具４５の長手方向の中間には、上面側が開口する凹形状の収納部４７が設けられている。収納部４７には、略矩形の板状に形成されたガイド部材５０が収納されている。ガイド部材５０は、収納部４７の左側の側面に沿う位置に収納されており、ガイド部材５０の右側には、ガイド部材５０の厚みと同等の幅寸法を有する隙間４７ａが形成されている。隙間４７ａには、支持棒６０が挿入されるようになっている。また、隙間４７ａを挟んでガイド部材５０と反対側の面、すなわち収納部４７の右側の内面には、ガイド部材５０で案内される支持棒６０を摺接させる摺接部４８が設けられている。摺接部４８は、収納部４７の右側の内壁に付した表面の摺動性が良好なシート材などで構成されている。摺接部４８が支持棒６０に接していることで、後述するガイド部材５０の案内路５１に係合する支持棒６０の係合突起６２ａが案内路５１から抜け出ることを防止できる。 Further, in the middle of the guide member attachment 45 in the longitudinal direction, a concave storage portion 47 having an upper surface opened is provided. The storage portion 47 stores a guide member 50 formed in a substantially rectangular plate shape. The guide member 50 is stored at a position along the left side surface of the storage portion 47, and a gap 47 a having a width dimension equivalent to the thickness of the guide member 50 is formed on the right side of the guide member 50. The support rod 60 is inserted into the gap 47a. Further, a slidable contact portion 48 for slidably contacting the support rod 60 guided by the guide member 50 is provided on the surface opposite to the guide member 50 across the gap 47a, that is, the inner surface on the right side of the storage portion 47. . The slidable contact portion 48 is made of a sheet material having good surface slidability attached to the inner wall on the right side of the storage portion 47. Since the sliding contact portion 48 is in contact with the support bar 60, it is possible to prevent the engagement protrusion 62 a of the support bar 60 that engages with a guide path 51 of the guide member 50 described later from coming out of the guide path 51.

一方、図３（ｄ）に示す支持棒６０は、直線棒状の部材で、一端６０ａの譜面板側連結部６１には、譜面板４０の下面４０ｄに回動自在に連結される軸部６１ａを備えている。また、支持棒６０の他端６０ｂの本体側連結部６２は、該他端６０ｂの左側面６０ｃに形成した略円柱状の小突起からなる係合突起６２ａを備えている。係合突起６２ａは、ガイド部材５０の案内路５１に係合する。これにより、本体側連結部６２が案内路５１に沿って移動することで、開口部３３から上方（譜面板４０側）へ突出する支持棒６０の突出長さ及び角度が変化し、支持棒６０で支持された譜面板４０の傾斜角度が変化するようになっている。 On the other hand, the support bar 60 shown in FIG. 3 (d) is a straight bar-like member, and the music plate-side connecting portion 61 at one end 60a is provided with a shaft portion 61a that is rotatably connected to the lower surface 40d of the music plate 40. I have. The main body side connecting portion 62 of the other end 60b of the support bar 60 includes an engaging protrusion 62a formed of a substantially cylindrical small protrusion formed on the left side surface 60c of the other end 60b. The engagement protrusion 62 a engages with the guide path 51 of the guide member 50. As a result, the main body side connecting portion 62 moves along the guide path 51, whereby the protruding length and angle of the support bar 60 protruding upward (from the musical score plate 40 side) from the opening 33 change, and the support bar 60. The inclination angle of the musical score board 40 supported by the above is changed.

図４は、ガイド部材５０の詳細構成を示す図で、（ａ）は、右側面（案内路５１の形成面）
５０ａから見た平面図、（ｂ）は、斜視図である。ガイド部材５０の右側面５０ａに形成された案内路５１は、支持棒６０の係合突起６２ａを案内する壁面５１ａで構成された通路で、ガイド部材５０の上面５０ｂの前側に設けた初期挿入口５２からガイド部材５０の前側の下端を経て後側の下端まで略Ｌ字状に形成された導入路５３と、ガイド部材５０の後側の下端を始点及び終点として、手前側の上方に向かってループ状に形成された循環路５４とを備えている。 FIG. 4 is a diagram showing a detailed configuration of the guide member 50, and FIG. 4A is a right side surface (formation surface of the guide path 51).
The top view seen from 50a, (b) is a perspective view. A guide path 51 formed on the right side surface 50 a of the guide member 50 is a passage formed by a wall surface 51 a that guides the engagement protrusion 62 a of the support rod 60, and an initial insertion port provided on the front side of the upper surface 50 b of the guide member 50. An introduction path 53 formed in a substantially L shape from 52 to the lower end on the rear side from the lower end on the front side of the guide member 50, and toward the upper side on the near side with the lower end on the rear side of the guide member 50 as the start point and the end point And a circulation path 54 formed in a loop shape.

循環路５４は、ガイド部材５０の後側の下端に設けた倒伏時停止部５５から第１上昇路５４ａを経て第１ストッパー部５６に連通している。第１上昇路５４ａは、図４（ａ）の前側（譜面板４０の回動支点４１側）かつ上側（開口部３３側）に向かうよう斜め上方に延びている。循環路５４はさらに、第１ストッパー部５６から第２上昇路５４ｂを経て第２ストッパー部５７に連通している。第２上昇路５４ｂは、図４（ａ）の前側（譜面板４０の回動支点４１側）かつ上側（開口部３３側）に向かうよう斜め上方に延び、その後前側に向かって横方向に延びている。循環路５４はさらに、第２ストッパー部５７から下降路５４ｃを経て導入路５３に合流してから倒伏時停止部５５に戻るようになっている。下降路５４ｃは、図４（ａ）の後側（譜面板４０の回動支点４１と反対側）かつ下側（開口部３３と反対側）に向かうよう斜め下方に延びている。 The circulation path 54 communicates with the first stopper portion 56 via the first ascending path 54 a from the overturn stop portion 55 provided at the lower end on the rear side of the guide member 50. The first ascending path 54a extends obliquely upward toward the front side (the rotation fulcrum 41 side of the musical score plate 40) and the upper side (opening 33 side) in FIG. The circulation path 54 further communicates with the second stopper part 57 from the first stopper part 56 through the second ascending path 54b. The second ascending path 54b extends obliquely upward toward the front side (the rotation fulcrum 41 side of the musical score plate 40) and the upper side (opening 33 side) of FIG. 4A, and then extends laterally toward the front side. ing. Further, the circulation path 54 joins the introduction path 53 from the second stopper part 57 via the descending path 54c, and then returns to the stop section 55 when lying down. The descending path 54c extends obliquely downward toward the rear side (opposite side of the rotation fulcrum 41 of the musical score plate 40) and the lower side (opposite side of the opening 33) in FIG.

また、導入路５３と合流した後の倒伏時停止部５５の直前位置には、案内路５１の断面に配された弾性片からなる戻り防止部５８が形成されている。戻り防止部５８により、循環路５４における係合突起６２ａの逆行が防止されるようになっている。 In addition, a return preventing portion 58 made of an elastic piece arranged on the cross section of the guide path 51 is formed at a position immediately before the inclining stop section 55 after joining the introduction path 53. The return preventing portion 58 prevents the engagement protrusion 62 a from going backward in the circulation path 54.

第１ストッパー部５６は、第１上昇路５４ａの上端５４ｄに対して下側かつ後側（斜め下側）に向かって窪んだ形状の部位で、第１上昇路５４ａを進行した係合突起６２ａが上端５４ｄから落ち込んで第１ストッパー部５６に係止されるようになっている。また、第２ストッパー部５７は、第２上昇路５４ｂの前端５４ｅに対して下側かつ後側（斜め下側）に向かって窪んだ形状の部位で、第２上昇路５４ｂを進行した係合突起６２ａが前端５４ｅから落ち込んで第２ストッパー部５７に係止されるようになっている。また、案内路５１における第２ストッパー部５７に対向する壁面５１ａには、第２ストッパー部５７に向かって突出する突起状の誘導壁５９が設けられている。すなわち、第２ストッパー部５７の斜め上方に配置された誘導壁５９は、下側かつ後側に向かって突出しており、第２上昇路５４ｅの前端５４ｅから落ち込む係合突起６２ａを第２ストッパー部５７へ押し込むように誘導可能な部位である。なお、第２ストッパー部５７を出た係合突起６２ａは、一度前側かつ上側に戻った後、下降路５４ｃに導入されるようになっている。 The first stopper portion 56 is a portion that is recessed downward and rearward (obliquely downward) with respect to the upper end 54d of the first ascending path 54a, and the engaging protrusion 62a that has advanced through the first ascending path 54a. Falls from the upper end 54d and is locked to the first stopper portion 56. Further, the second stopper portion 57 is a portion that is recessed toward the lower side and the rear side (obliquely lower side) with respect to the front end 54e of the second ascending path 54b, and has engaged with the second ascending path 54b. The protrusion 62a falls from the front end 54e and is locked to the second stopper portion 57. In addition, a protruding guide wall 59 that protrudes toward the second stopper portion 57 is provided on the wall surface 51 a of the guide path 51 that faces the second stopper portion 57. That is, the guide wall 59 disposed obliquely above the second stopper portion 57 protrudes downward and rearward, and the engaging protrusion 62a that drops from the front end 54e of the second ascending path 54e is provided in the second stopper portion. It is a site that can be guided to be pushed into 57. The engaging protrusion 62a that has come out of the second stopper portion 57 is once introduced back into the descending path 54c after returning to the front side and the upper side.

また、図２に示すように、本体部１０の前後方向において、開口部３３とガイド部材５０は、それら一部が重なった状態で、ガイド部材５０が開口部３３の後端３３ａよりも後側まで配置されている。したがって、支持棒６０の本体側連結部６２を案内する案内路５１も、開口部３３の後端３３ａよりも後側の位置まで及んでいる。 In addition, as shown in FIG. 2, in the front-rear direction of the main body 10, the opening 33 and the guide member 50 are located on the rear side of the rear end 33 a of the opening 33 in a state where the openings 33 and the guide member 50 partially overlap each other. It is arranged until. Therefore, the guide path 51 that guides the main body side connecting portion 62 of the support rod 60 also extends to a position behind the rear end 33 a of the opening 33.

次に、上記構成の譜面板支持構造を用いて行なう譜面板４０の角度調整について説明する。図５は、当該角度調整の動作を説明するための図である。同図（ａ）は、譜面板４０が倒伏姿勢の状態を示している。このとき、譜面板４０は、響板３０に沿って略水平に倒された状態となっており、支持棒６０の係合突起（本体側連結部）６２ａが案内路５１の倒伏時停止部５５に位置している。この状態で、開口部３３からガイド部５０側に出る支持棒６０が譜面板４０の回動支点４１に対して開口部３３より後側に延び、係合突起６２ａが位置する倒伏時停止部５５が開口部３３の後端３３ａよりも後側に配置された状態になる。 Next, the angle adjustment of the musical score board 40 performed using the musical score board support structure of the said structure is demonstrated. FIG. 5 is a diagram for explaining the angle adjustment operation. FIG. 5A shows a state in which the music score board 40 is in a lying posture. At this time, the musical score plate 40 is in a state of being tilted substantially horizontally along the soundboard 30, and the engagement protrusion (main body side connecting portion) 62 a of the support bar 60 is the stop portion 55 at the time of falling down of the guide path 51. Is located. In this state, the support bar 60 that protrudes from the opening 33 toward the guide part 50 extends to the rear side of the opening 33 with respect to the rotation fulcrum 41 of the musical score plate 40, and the fall stop part 55 where the engaging protrusion 62 a is located Is disposed on the rear side of the rear end 33a of the opening 33.

また、この譜面板４０の倒伏状態では、支持棒６０は、その長手方向が譜面板４０の下面４０ｄと略平行ではなく、譜面板側連結部６１より本体側連結部６２の方が上下方向の位置が低くなるように譜面板４０に対して角度を成した状態、すなわち、譜面板側連結部６１から本体側連結部６２に向かって次第に譜面板４０の下面４０ｄとの離間距離が大きくなるように角度を成した状態で配置される。さらに、この譜面板４０の倒伏状態では、ガイド部材５０から上方に突出する支持棒４０の譜面板側連結部６１は、響板３０の開口部３３の内部（響板３０の板厚の範囲内）に位置する。 In the lying state of the musical score plate 40, the support bar 60 is not substantially parallel to the lower surface 40 d of the musical score plate 40 in the longitudinal direction, and the main body side coupling portion 62 is more vertically oriented than the musical score plate side coupling portion 61. A state in which the position is lowered with respect to the music score plate 40, that is, the distance from the lower surface 40 d of the music score plate 40 gradually increases from the music score plate side coupling portion 61 toward the main body side coupling portion 62. Are arranged in an angled state. Further, when the musical score board 40 is in a lying state, the musical score board side connecting portion 61 of the support bar 40 protruding upward from the guide member 50 is located inside the opening 33 of the sound board 30 (within the thickness range of the sound board 30). ).

上記の倒伏姿勢において、譜面板４０の上端４０ｂを手などで上方へ引き起こすと、譜面板４０の上昇に伴い支持棒６０が開口部３３から斜め前上方へ引き出されるように移動する。これにより、支持棒６０の係合突起６２ａが倒伏時停止部５５から出て第１上昇路５４ａを進行する。その後、係合突起６２ａは、第１上昇路５４ａの上端５４ｄから落下し、第１ストッパー部５６に係止される。このとき、図５（ｂ）に示すように、支持棒６０で支持された譜面板４０が響板３０（水平面）に対して第１の角度θ₁を成した状態で立設される。この状態で、開位置の譜面受け４３に譜面を載せることで、譜面板４０を使用することができる。 When the upper end 40b of the musical score plate 40 is raised upward by hand in the above lying posture, the support bar 60 moves so as to be drawn obliquely forward and upward from the opening 33 as the musical score plate 40 rises. As a result, the engagement protrusion 62a of the support rod 60 comes out of the fall stop portion 55 and travels through the first ascending path 54a. Thereafter, the engaging protrusion 62 a falls from the upper end 54 d of the first ascending path 54 a and is locked to the first stopper portion 56. At this time, as shown in FIG. 5B, the musical score plate 40 supported by the support rod 60 is erected in a state where the first angle θ ₁ is formed with respect to the soundboard 30 (horizontal plane). In this state, the musical score board 40 can be used by placing the musical score on the musical score holder 43 in the open position.

また、図５（ｂ）に示す状態（第１の角度θ１で立設された状態）の譜面板４０の上端４０ｂを持ち上げてさらに手前側に起こすと、この場合も、譜面板４０の上昇に伴い支持棒６０が開口部３３から斜め前上方へ引き出されるように移動する。これにより、支持棒６０の係合突起６２ａが第１ストッパー部５６を出て第２上昇路５４ｂを進行する。その後、係合突起６２ａは、第２上昇路５４ｂの前端５４ｅから落下し、第２ストッパー部５７に係止される。これにより、図５（ｃ）に示すように、支持棒６０で支持された譜面板４０が響板３０に対して第２の角度θ₂（θ₁＜θ₂）を成した状態で立設される。 Further, if the upper end 40b of the musical score plate 40 in the state shown in FIG. 5B (the state where it is erected at the first angle θ1) is lifted and raised further toward the front side, the musical score plate 40 is also lifted. Accordingly, the support bar 60 moves so as to be drawn obliquely forward and upward from the opening 33. As a result, the engaging protrusion 62a of the support rod 60 exits the first stopper portion 56 and advances through the second ascending path 54b. Thereafter, the engaging protrusion 62 a falls from the front end 54 e of the second ascending path 54 b and is locked to the second stopper portion 57. As a result, as shown in FIG. 5C, the musical score plate 40 supported by the support bar 60 is erected in a state where the second angle θ ₂ (θ ₁ <θ ₂ ) is formed with respect to the soundboard 30. Is done.

このように、立設姿勢の譜面板４０を異なる複数の角度で支持可能とする第１ストッパー部５６と第２ストッパー部５７とを設けたことで、譜面板４０の立設角度を複数段階に調節可能となり、譜面板４０の使い勝手を向上させることができる。また、第２ストッパー部５７は、第１ストッパー部５６よりも回動支点４１に近い手前側かつ上側に位置している。これにより、開口部３３における支持棒６０の移動量を少なく抑えながらも、譜面板４０の立設角度の変化量を大きくすることが可能である。したがって、譜面板４０の立設角度の調節が行い易くなる。なお、ここでは、案内路５１に二段のストッパー部５６，５７を設けた場合を示したが、ストッパー部は、三段以上を設けることも可能である。 Thus, by providing the first stopper portion 56 and the second stopper portion 57 that can support the musical score plate 40 in the standing posture at a plurality of different angles, the standing angle of the musical score plate 40 is set in a plurality of stages. Adjustment becomes possible, and the usability of the music board 40 can be improved. Further, the second stopper portion 57 is located closer to the upper side and closer to the rotation fulcrum 41 than the first stopper portion 56. Thereby, it is possible to increase the amount of change in the standing angle of the musical score plate 40 while suppressing the movement amount of the support bar 60 in the opening 33 to a small extent. Therefore, it becomes easy to adjust the standing angle of the musical score plate 40. Although the case where the two-stage stopper portions 56 and 57 are provided in the guide path 51 is shown here, the stopper portion can be provided with three or more steps.

また、係合突起６２ａが第２ストッパー部５７に係止される際、係合突起６２ａを第２ストッパー部５７に導くための誘導壁５９により、係合突起６２ａが第２ストッパー部５７を通過することを防止できるので、係合突起６２ａが第２ストッパー部５７に確実に係合するようになる。したがって、譜面板４０を所定の立設角度（θ₂）で確実にロックでき、譜面板４０の使い勝手が向上する。 Further, when the engaging protrusion 62 a is locked to the second stopper portion 57, the engaging protrusion 62 a passes through the second stopper portion 57 by the guide wall 59 for guiding the engaging protrusion 62 a to the second stopper portion 57. Therefore, the engagement protrusion 62a can be reliably engaged with the second stopper portion 57. Therefore, the music score board 40 can be reliably locked at a predetermined standing angle (θ ₂ ), and the usability of the music score board 40 is improved.

また、図５（ｃ）に示す状態（第２の角度θ₂で立設された状態）の譜面板４０の上端４０ｂをさらに手前上方へ引くと、譜面板４０の手前側への回動に伴い支持棒６０が引き上げられて斜め上方へ移動する。これにより、支持棒６０の係合突起６２ａが第２ストッパー部５７を出て下降路５４ｃに導入される。その後、譜面板４０の上端４０ｂを後側下方へ戻せば、係合突起６２ａが下降路５４ｃを進行する。そして、係合突起６２ａが戻り防止部５８を越えて倒伏時停止部５５に戻ったとき、譜面板４０は、図５（ａ）の倒伏姿勢に戻る。なお、交換やメンテナンスに伴う譜面板４０の取り外しを行なう場合は、戻り防止部５８を越える前の係合突起６２ａを導入路５３に導くことで、係合突起６２ａを初期挿入口５２から取り出して、支持棒６０をガイド部材５０から取り外すことができる。譜面板４０を取り付ける際は、これとは逆に、初期挿入口５２から挿入した係合突起６２ａを導入路５３を経由して循環路５４へ導くようにする。 Further, when the upper end 40b of the musical score plate 40 in the state shown in FIG. 5C (the state where it is erected at the second angle θ ₂ ) is further pulled upward, the musical score plate 40 is rotated to the front side. Accordingly, the support bar 60 is pulled up and moved obliquely upward. As a result, the engagement protrusion 62a of the support bar 60 exits the second stopper portion 57 and is introduced into the descending path 54c. Thereafter, when the upper end 40b of the music score plate 40 is returned downward to the rear side, the engaging projection 62a advances in the descending path 54c. When the engaging protrusion 62a passes over the return preventing portion 58 and returns to the falling stop portion 55, the musical score plate 40 returns to the lying posture shown in FIG. When the musical score plate 40 is removed due to replacement or maintenance, the engaging protrusion 62a is removed from the initial insertion port 52 by guiding the engaging protrusion 62a before the return preventing portion 58 to the introduction path 53. The support rod 60 can be removed from the guide member 50. On the contrary, when the musical score plate 40 is attached, the engaging protrusion 62 a inserted from the initial insertion port 52 is guided to the circulation path 54 via the introduction path 53.

以上説明したように、本実施形態の譜面板支持構造によれば、譜面板４０が倒伏状態のとき、係合突起６２ａが位置する倒伏時停止部５５が回動支点４１から見て開口部３３の後端３３ａよりも後側の位置となるようにしたので、開口部３３での支持棒６０の位置の移動量を少なく抑えることができる。これにより、開口部３３の寸法を小さくすることが可能となる。したがって、電子ピアノの外観の一部をなす開口部３３、あるいは該開口部３３から見える本体部１０の内部構造を目立たなくでき、楽器の外観を良好にすることができる。 As described above, according to the musical score plate support structure of the present embodiment, when the musical score plate 40 is in the lying down state, the falling stop portion 55 where the engaging projection 62a is located is viewed from the rotation fulcrum 41 and the opening 33 Since the position is located on the rear side of the rear end 33a, the amount of movement of the position of the support rod 60 in the opening 33 can be suppressed to a small amount. As a result, the size of the opening 33 can be reduced. Therefore, the opening 33 which forms a part of the appearance of the electronic piano or the internal structure of the main body 10 seen from the opening 33 can be made inconspicuous, and the appearance of the musical instrument can be improved.

また、本実施形態では、ガイド部材５０の案内路５１は、支持棒６０の係合突起６２ａが譜面板４０の下面４０ｄに向かう向き及び該下面４０ｄから遠ざかる向きへ進退移動するように形成されている。これにより、譜面板４０を立設姿勢と倒伏姿勢とに移行させる際、回動する譜面板４０の下面４０ｄ（詳細には、譜面板側連結部６１）に向かう向き（あるいは、回動支点４１に近い前側かつ開口部３３に近い上側に向かう向き）及び該下面４０ｄから遠ざかる向きへ支持棒６０が進退移動するので、開口部３３内での支持棒６０の位置の移動量を少なくできる。したがって、開口部３３の寸法を小さくすることが可能となる。 In the present embodiment, the guide path 51 of the guide member 50 is formed so that the engagement protrusion 62a of the support bar 60 moves forward and backward in a direction toward the lower surface 40d of the musical score plate 40 and in a direction away from the lower surface 40d. Yes. As a result, when the music score board 40 is shifted between the standing posture and the lying posture, the direction (or the rotation fulcrum 41) toward the lower surface 40d (specifically, the music score board side connecting portion 61) of the music score plate 40 that rotates. The support bar 60 moves forward and backward in a direction away from the lower surface 40d), and the amount of movement of the position of the support bar 60 in the opening 33 can be reduced. Accordingly, the size of the opening 33 can be reduced.

また、本実施形態では、支持棒６０は、譜面板４０の回動方向に対する幅方向の中央を支持する単一の支持棒６０とし、ガイド部材５０を支持棒６０の一方の側部のみに設置している。したがって、支持棒６０及びガイド部材５０を各１個ずつ設ければよいので、譜面板支持構造の部品点数を少なくでき、電子ピアノの製造コストを抑えることができる。 In the present embodiment, the support bar 60 is a single support bar 60 that supports the center of the musical score plate 40 in the width direction with respect to the rotation direction, and the guide member 50 is installed only on one side of the support bar 60. is doing. Therefore, since only one support bar 60 and one guide member 50 are provided, the number of parts of the music board support structure can be reduced, and the manufacturing cost of the electronic piano can be suppressed.

以上本発明の実施形態を説明したが、本発明は上記実施形態に限定されるものではなく、特許請求の範囲、及び明細書と図面に記載された技術的思想の範囲内において種々の変形が可能である。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible.

本発明の一実施形態にかかる譜面板支持構造を備えた電子ピアノの本体部を示す分解斜視図である。It is a disassembled perspective view which shows the main-body part of the electronic piano provided with the musical score board support structure concerning one Embodiment of this invention. 電子ピアノの本体部に取り付けた譜面板及びその支持構造を示す概略側断面図である。It is a schematic sectional side view which shows the musical score board attached to the main-body part of an electronic piano, and its support structure. ガイド部材取付体及び支持棒を示す図で、（ａ）は、ガイド部材取付体の平面図、（ｂ）は、（ａ）のＡ−Ａ矢視断面図、（ｃ）は、ガイド部材取付体の斜視図、（ｄ）は、支持棒の斜視図である。It is a figure which shows a guide member attachment body and a support rod, (a) is a top view of a guide member attachment body, (b) is AA arrow sectional drawing of (a), (c) is guide member attachment. The perspective view of a body and (d) are perspective views of a support bar. ガイド部材を示す図で、（ａ）は、案内路が形成された右側面の平面図、（ｂ）は、右側面から見た斜視図である。It is a figure which shows a guide member, (a) is a top view of the right side in which the guide path was formed, (b) is the perspective view seen from the right side. 譜面板支持構造の動作を説明するための図である。It is a figure for demonstrating operation | movement of a musical score board support structure.

Explanation of symbols

１０本体部
１３鍵盤
３０響板（中間部材）
３３開口部
４０譜面板
４０ｄ下面
４１回動支点
４１ａ蝶番
４５ガイド部材取付具
４６ガイド部材取付体
４７収納部
４７ａ隙間
４８摺接部
５０ガイド部材
５１案内路
５１ａ壁面
５２初期挿入口
５３導入路
５４循環路
５４ａ第１上昇路
５４ｂ第２上昇路
５４ｃ下降路
５５倒伏時停止部
５６第１ストッパー部
５７第２ストッパー部
５８戻り防止部
５９誘導壁
６０支持棒
６０ａ一端
６０ｂ他端
６０ｃ左側面
６１譜面板側連結部
６１ａ回動軸
６１ａ軸部
６２本体側連結部
６２ａ係合突起 10 Main body 13 Keyboard 30 Sound board (intermediate member)
33 Opening portion 40 Musical plate 40d Lower surface 41 Rotating fulcrum 41a Hinge 45 Guide member attachment 46 Guide member attachment body 47 Storage portion 47a Gap 48 Sliding contact portion 50 Guide member 51 Guide passage 51a Wall surface 52 Initial insertion port 53 Introduction passage 54 Circulation Road 54a First ascending path 54b Second ascending path 54c Descent path 55 Stopping portion 56 when falling down First stopper portion 57 Second stopper portion 58 Return preventing portion 59 Guide wall 60 Support rod 60a One end 60b Other end 60c Left side surface 61 Side connection portion 61a Rotating shaft 61a Shaft portion 62 Main body side connection portion 62a Engagement protrusion

Claims

A musical score board that can change the inclination angle between the standing posture and the lying posture by rotating around the fulcrum with respect to the instrument body,
The music plate side connecting portion provided at one end is rotatably connected to the music plate, and the main body side connecting portion provided at the other end is movably connected to the instrument body. A long support device that can be supported by switching the inclination angle of the music score plate by moving the connecting portion;
A guide portion provided in the instrument body and movably engaged with the main body side connection portion of the support; a guide path for guiding the movement of the main body side connection portion provided in the guide portion; and the musical score plate A stopper portion for locking the main body side connecting portion in the middle of the guide path when supporting the device in a standing posture,
An intermediate member disposed between the musical score plate and the guide portion, having an opening for penetrating the support;
A music board support structure for a musical instrument comprising:
When the musical score plate is in a lying state, the main body side connecting portion of the support is arranged behind and below the musical score plate side connecting portion with respect to the fulcrum, and the main body is provided in the guide portion. A musical score plate support structure for a musical instrument, wherein the inclining stop portion for stopping the side connecting portion is located behind the rear end of the opening.

The guide path of the guide portion faces the main body side connection portion of the support toward the front side close to the fulcrum and the upper side close to the opening when the music plate is shifted from the lying down posture to the standing posture. The musical score plate support structure according to claim 1, wherein the musical score plate support structure is formed so as to be moved.

3. The instrument according to claim 1, wherein the stopper portion of the guide portion is provided at a position closer to the front side closer to the fulcrum and closer to the opening than the stop portion when lying down. Music board support structure.

The stopper portions are provided at a plurality of locations so as to be able to support the music plate at a plurality of different standing angles, and the stopper portions at the plurality of locations have a larger standing angle of the corresponding music plate. 4. The musical score plate support structure according to claim 3, wherein the musical score plate support structure is disposed so as to be positioned on the front side near the fulcrum and on the upper side near the opening.

The guide path has a wall surface that guides a projecting engaging portion provided in the main body side connecting portion,
The musical score plate support according to any one of claims 1 to 4, wherein a guide wall protruding toward the stopper portion is provided on a wall surface of the guide path facing the stopper portion. Construction.

The support is a single bar-like member that supports the middle of the width direction with respect to the rotation direction of the music plate,
The musical score plate support structure according to any one of claims 1 to 5, wherein the guide portion is provided only on one side of the support.