JP4535994B2 - Musical instrument holding device for keyboard instruments - Google Patents

Description

  The present invention relates to a musical score holding device for a keyboard instrument for holding a musical score placed on a music stand.

  Various types of musical instrument stand are used.For example, in an upright piano, a music stand extending in the left-right direction is attached to the back of the keyboard lid so as to extend almost horizontally forward. The music is placed on a music stand and leaned against the keyboard lid. On the other hand, the musical score includes a bookbinding type and a single piece or spread piece type. When a bookbinding type musical score is leaned against the keyboard lid as described above, the open page is easy to squeeze naturally during performance, especially when the musical score is new and no opening / closing feature is provided. It becomes difficult to open. In the case of a piece type musical score, since the musical score is thin, the musical score is bent and easily slips off from the musical score stand. For this reason, what was disclosed by patent document 1 is known as a conventional music stand assembly for avoiding such a malfunction, for example.

  This music stand assembly is applied to an electronic keyboard instrument, and is provided on the top board, extends in the left-right direction, and a music board for leaning the music score, and a music board on the top surface of the top board. It is provided and is composed of a music score holding unit for placing and holding a music score. The musical score holding unit is fitted and fixed from the lower side of the opening formed in the top plate, and includes a case body, a rotating body provided in the case body, and a lower cover on the lower side of the case body. . The rotating body includes a presser bar and a pair of bushes provided integrally on both side surfaces of one end of the presser bar. Each bush is made of short cylindrical rubber, and fits tightly into the support hole formed between the semicircular bearing concave surface of the case body and the semicircular bearing concave surface of the lower cover. ing.

  With this configuration, the presser bar rotates about the horizontal axis extending in the front-rear direction, with the bush as the center, and in a state of being flush with the top plate, the holding position horizontally accommodated in the case body, and the case body It can be rotated between a standing position where it stands up at a predetermined angle smaller than 60 °. Further, since the bush is tightly fitted in the support hole, the pressing bar is held at an arbitrary angular position within the rotation range.

  In this music stand assembly, the holding bar is usually positioned at the receiving position, the lower end of the music is placed on the music holding unit, and the music is stood against the music board. Further, if necessary, the musical score is held by rotating the pressing bar to the standing position and pressing the lower end of the musical score with the pressing bar.

  However, in the above-described conventional music stand assembly, since the music holding unit is attached by fitting into the opening, at least a space having the same size as the music holding unit is required for the attachment part. For this reason, it is difficult to attach the musical score holding unit to a musical score base having a small depth like the musical score base of the upright piano described above. Moreover, even if it is attached, the distance between the presser bar standing from the music stand and the keyboard cover becomes very narrow, so that a thick musical score cannot be placed.

  Further, in this music stand assembly, the rotation resistance of the pressing bar for holding the pressing bar at an arbitrary angular position is tightly fitted to the support hole formed between the case body and the lower cover. Secured by. For this reason, when the rotation resistance of the presser bar is reduced due to wear of the bush and the presser bar cannot be held, the holding force cannot be recovered and the bush must be replaced. Moreover, since the musical score holding unit is fitted into the opening of the top plate from the lower side, it is necessary to remove the top plate in order to replace the bush, which is complicated.

  The present invention has been made to solve such a problem, and can satisfactorily hold a musical score placed on a music stand regardless of the type of musical score, and even when a keyboard instrument is used for a long period of time. An object of the present invention is to provide a musical score holding device for a keyboard instrument that can maintain a musical score holding power.

JP 2002-258832 A

  In order to achieve this object, the invention according to claim 1 is a musical score holding device for a keyboard instrument for holding a musical score placed on the upper surface of a musical score, and is fixed to the lower surface of the musical score, A stay having a fitting hole extending in the direction and opening on the front surface, and a screw hole orthogonal to the fitting hole, a fitting portion that is rotatably fitted in the fitting hole, and a right angle from the front end of the fitting portion A holder rod that is formed in an L shape from the holding portion extending in the direction and corresponding to the screw hole of the fitting portion, and has an engaging portion at the tip portion. And a set screw that is screwed into the screw hole of the stay and that engages the engagement portion with the engagement groove to lock the holder rod.

  According to the musical score holding device for a keyboard instrument, the stay is fixed to the lower surface of the music stand, and the fitting portion of the L-shaped holder rod is rotatable in the fitting hole of the stay that opens on the front surface. It is mated. Moreover, this fitting part has the engaging groove which continues in the circumferential direction, and the engaging part of the front-end | tip part of the set screw screwed in the screw hole of the stay engages with this engaging groove. The holder rod is locked to the stay.

  Therefore, by appropriately setting the tightening degree of the set screw, the holder rod can be rotated around the fitting hole of the stay and can be held at an arbitrary angular position. For this reason, the musical score placed on the music stand can be held by the holding portion by rotating the holder rod so that the holding portion extending perpendicularly from the front end of the fitting portion extends above the music stand. Also, since the holder rod can be held at an arbitrary angle position, for example, by setting the angle position of the holder rod according to the size and thickness of the music score, thereby changing the holding position for holding the music score, Regardless of the type, the music score can be held well. Also, when not using the music score or when it is not necessary to hold the music score with the holder, turn the holder rod and tilt the holder so that the holder does not get in the way. It can be stored compactly along the side.

  Furthermore, by adjusting the tightening degree of the set screw, the rotation resistance of the holder rod can be adjusted, so that the holding force of the holder rod can be secured and an appropriate rotation resistance that allows the holder rod to be rotated smoothly without difficulty. Obtainable. For this reason, even if the holder rod is loosened due to loosening of the set screw due to long-term use of the keyboard instrument, the turning resistance can be easily recovered by simply tightening the set screw, and the holder rod can be held. You can maintain power. In addition, the stay is fixed to the underside of the music stand and the holder rod is placed on the front side of the music stand, so it can be easily attached to a music stand with a small depth, such as an upright piano. Can also be retrofitted.

  According to a second aspect of the present invention, in the musical score holding device for a keyboard musical instrument according to the first aspect, the engaging groove of the holder rod and the engaging portion of the set screw have complementary shapes.

  According to this configuration, the engaging groove of the holder rod and the engaging portion of the set screw have complementary shapes to each other, so that the engaging portion closely engages the engaging groove with no gap, thereby the holder The rod can be securely locked to the stay, and the set screw can be made difficult to loosen, thereby maintaining the holding force for a long time.

  The invention according to claim 3 is the musical score holding device for a keyboard musical instrument according to claim 1 or 2, characterized in that a cap having friction and elasticity is attached to the tip of the holding portion of the holder rod. To do.

  According to this configuration, the cap is attached to the tip of the holding portion that comes into contact with the musical score, and since this cap has friction, the frictional resistance between the musical score and the musical score can be increased, and the musical score can be prevented from slipping. Can be suppressed. Also, for example, when a music stand is attached to the keyboard lid, even if the music stand is folded by mistake while the holding portion is raised, the cap has elasticity so that damage to the keyboard lid due to contact with the holding portion is prevented. be able to.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an upright piano 2 (keyboard instrument) provided with a music score holding device 1 of the present invention. In the following description, when the upright piano 2 is viewed from the performer, the front side is “front”, the back side is “rear”, and the left and right sides are “left” and “right”, respectively. Shall be performed.

  As shown in FIG. 1, the upright piano 2 includes left and right parent plates 3 and 3, a shelf plate 4 that is horizontally fixed between the parent plates 3 and 3, and a keyboard 5 disposed on the shelf plate 4. And a keyboard cover 6 for opening and closing the keyboard 5, and a music stand 7 attached to the keyboard cover 6.

  As shown in FIG. 1, the music stand 7 has a rectangular shape extending in the left-right direction, and is attached to the rear surface of the keyboard lid 6 via the two left and right hinges 8, 8 at the rear end thereof. ing. As shown in FIG. 2, a stopper 7 a that protrudes slightly upward is integrally formed at the front end portion of the music stand 7. With this configuration, when the music stand 7 is pushed up from the placement position shown in FIG. 2, the music stand 7 rotates about the hinge 8 in the counterclockwise direction in FIG. 2, and the tip of the stopper 7 a moves to the keyboard lid 6. By abutting, the folding position is maintained. On the other hand, when the music stand 7 is pulled to the near side from this folding position, the music stand 7 is rotated in the clockwise direction, and the rear end surface of the music stand 7 abuts against the keyboard lid 6, so that it is in front of the keyboard lid 6. It is held at a mounting position extending substantially horizontally. At this placement position, the music score S is placed on the upper surface of the music stand 7 and leans against the keyboard lid 6. In this state, the music score S is normally held on the music stand 7 by the lower end of the music score S being locked to the stopper 7a.

  The music score holding device 1 according to the present invention is attached to a music score table 7. As shown in FIGS. 1 to 3, the musical score holding device 1 includes two left and right stays 11, 11, a holder rod 12 fitted to each stay 11, and a stopper for locking the holder rod 12 to the stay 11. A screw 13 and two fixing screws 14 and 14 for fixing the stay 11 to the lower surface of the music stand 7 are provided.

  The two stays 11, 11 are arranged inside the hinges 8, 8 at the front end portion of the lower surface of the music stand 7. As shown in FIGS. 3 and 4A, the stay 11 is formed in a short columnar shape, and a fitting hole 15 is formed in the upper half thereof. The fitting hole 15 has a circular cross section, opens in the front surface of the stay 11, and extends in the front-rear direction. The rear end portion of the fitting hole 15 has a taper that narrows toward the rear side. Further, as shown in FIG. 4, a screw hole 16 is formed in the stay 11. The screw hole 16 opens on the lower surface of the stay 11, extends in the vertical direction to the fitting hole 15, and is orthogonal to the fitting hole 15. Furthermore, in the center of the stay 11, two holes 17, 17 penetrating in the vertical direction are formed on both sides of the fitting hole 15. The stay 11 is fixed to the lower surface of the music stand 7 by passing the fixing screws 14 from the lower side through these holes 17 and screwing them into the music stand 7. Further, the lower end portion of the hole 17 is an accommodating portion 17a that is countersunk, and the fixing screw 14 protrudes downward from the stay 11 when the head portion of the fixing screw 14 is accommodated in the accommodating portion 17a. It is supposed not to.

  As shown in FIG. 3, the holder rod 12 is formed of a round bar, and is formed in an L shape from a fitting portion 18 extending in the front-rear direction and a holding portion 19 extending at a right angle from the front end. . The fitting portion 18 has substantially the same diameter as the fitting hole 15, and thereby is fitted in the fitting hole 15 so as to be rotatable. The rear end portion of the fitting portion 18 has substantially the same taper as the taper of the rear end portion of the fitting hole 15. Further, an engagement groove 18 a is formed in the fitting portion 18 at a position corresponding to the screw hole 16 of the stay 11. The engagement groove 18a is continuous in the circumferential direction, and a cross section along the length direction of the fitting portion 18 is formed in a U-shape as shown in FIG. This corresponds to a diameter of 16. The holding part 19 is longer than the fitting part 18, and a cap 20 made of rubber or the like having friction and elasticity is attached to the tip part.

  As shown in FIGS. 3 and 5, the set screw 13 includes a screw portion 13 a that is threaded on the outer peripheral surface, and an engagement portion 13 b that is continuous to the tip side of the screw portion 13 a and is not threaded. Has been. A hexagon hole 13c for a hexagon wrench (not shown) is formed on the lower surface of the screw portion 13a (see FIG. 6). The engaging portion 13b has a shape complementary to the engaging groove 18a of the fitting portion 18, that is, is formed in a short columnar shape having a U-shaped side surface.

  With the above configuration, by tightening the set screw 13 screwed into the screw hole 16 of the stay 11 with a hexagon wrench, the engaging portion 13b of the set screw 13 is engaged with the engaging groove 18a of the fitting portion 18 as shown in FIG. Engage closely with no gap. By this engagement, the holder rod 12 is locked to the stay 11 so as not to come out. Further, by adjusting the tightening degree of the set screw 13, the holder rod 12 can be rotated about the fitting hole 15 of the stay 11 and can be held at an arbitrary angular position. Also, by adjusting the degree of tightening, the rotation resistance of the holder rod 12 can be adjusted, so that the holding force of the holder rod 12 can be secured, and an appropriate rotation resistance that allows the holder rod 12 to be rotated smoothly without difficulty. Can be obtained.

  The music score holding device 1 having the above configuration is used as follows. As shown in FIG. 2, when using the music score S, the music stand 7 is positioned at the placement position, and when holding the music score S, the holding portion 19 of the holder rod 12 is further above the music score 7. The holder rod 12 is rotated so as to extend in the direction (solid line position in FIG. 1). Then, the music score S is placed on the music stand 7. For this reason, when the musical score S is a piece type, as shown in FIG. 2, even if the musical score S bends and its lower end is detached from the stopper 7a, the upright holding portion 19 prevents slipping down and stabilizes. Can be held. Although not shown, even when the musical score is easy to bend like a bookbinding type, the curled portion of the musical score can be prevented from coming into contact with the holding portion 19 and a desired page can be stably opened. On the other hand, when it is not necessary to hold the musical score S, the holder rod 12 is rotated and the holding portion 19 is tilted (the broken line position in FIG. 1 and FIG. 6) to bring the holding portion 19 under the music stand 7. On the side, store along it.

  As described above, according to the present embodiment, the fitting portion 18 of the L-shaped holder rod 12 is rotatably fitted in the fitting hole 15 of the stay 11 fixed to the lower surface of the music stand 7. ing. In addition, the holder rod 12 is locked to the stay 11 by engaging the engaging groove 18 a of the fitting portion 18 with the engaging portion 13 b of the set screw 13 screwed into the screw hole 16 of the stay 11. . Therefore, by appropriately setting the tightening degree of the set screw 13, the holder rod 12 can be rotated and held at an arbitrary angular position. Therefore, the musical score S placed on the upper surface of the music stand 7 can be held by the holding portion 19 by rotating the holder rod 12 so that the holding portion 19 extends above the music stand 7.

  In addition, since the holder rod 12 can be held at an arbitrary angular position, by setting the angular position of the holder rod 12 according to the size and thickness of the musical score, the musical score can be held well regardless of the type of musical score. be able to. Further, when not using the musical score or when it is not necessary to hold the musical score by the holding portion 19, the holder rod 12 is rotated and the holding portion 19 is tilted, so that the holding portion 19 is not disturbed. The music stand 7 can be stored compactly along the lower side.

  Furthermore, since the rotational resistance of the holder rod 12 can be adjusted only by adjusting the tightening degree of the set screw 13, the holder rod 12 is loosened due to loosening of the set screw 13 due to long-term use of the upright piano 2. Even in this case, it is possible to easily recover the rotational resistance by simply tightening the set screw 13 and maintain the holding force of the holder rod 12. In addition, the stay 11 is fixed to the lower surface of the music stand 7 and the holding portion 19 of the holder rod 12 is arranged on the front side of the music stand 7, so that it is easy for the music stand 7 with a small depth like the upright piano 2. It can be attached to an existing piano as a retrofit.

  Further, since the cross section of the engaging groove 18a of the holder rod 12 and the side surface of the engaging portion 13b of the set screw 13 are both formed in a U shape and have complementary shapes, the holder rod 12 is firmly attached to the stay 11. In addition to being able to be locked, it is possible to make the set screw 13 difficult to loosen and maintain the holding force thereby for a long period of time.

  Furthermore, since the rubber cap 20 is attached to the tip of the holding portion 19 that comes into contact with the musical score, the frictional resistance between the musical score and the musical score can be increased, and the musical score can be prevented from slipping. Further, even if the music stand 7 is rotated to the folding position with the holding unit 19 upright, the cap 20 can prevent the keyboard cover 6 from being damaged by the contact of the holding unit 19.

  In addition, this invention can be implemented in a various aspect, without being limited to embodiment described. For example, in the embodiment, the stay 11 is fixed to the music stand 7 attached to the keyboard lid 6 so as to be freely opened and closed. However, the present invention is not limited thereto, and is fixed to a fixed music stand attached to the upper surface of the lower roof, for example. May be. Moreover, in embodiment, although the cross-sectional shape of the engaging groove 18a of the fitting part 18 is U shape, it is not restricted to this, For example, as shown in FIG.7 (b) U-shape with R, It may be V-shaped as shown in FIG. In this case, the engaging portion 13b of the set screw 13 is formed in a U shape or V shape with an R that is complementary to the engaging groove 18a. Furthermore, in the embodiment, the cap 20 is made of rubber. However, the cap 20 is not limited to this, and may be made of a synthetic resin such as urethane.

  Furthermore, although the embodiment is an example in which the present invention is applied to an upright piano, the present invention is not limited to this, and can be applied to other types of keyboard instruments. In addition, it is possible to appropriately change details within the scope of the gist of the present invention.

It is a front view of the upright piano provided with the musical score holding | maintenance apparatus by embodiment of this invention. It is a side view of a musical score holding device. It is a disassembled perspective view of a musical score holding | maintenance apparatus. It is the (a) bottom view and (b) side view of the stay of a musical score holding | maintenance apparatus. It is sectional drawing of a musical score holding | maintenance apparatus. It is a bottom view of a musical score holding device. It is sectional drawing for showing the shape of an engaging groove.

Explanation of symbols

1 Music notation holding device 2 Upright piano (keyboard instrument)
7 Music stand 11 Stay 12 Holder rod 13 Set screw 13b Engagement part 15 Fitting hole 16 Screw hole 18 Fitting part 18a Engaging groove 19 Holding part 20 Cap S Musical score

Claims (3)

A musical score holding device for a keyboard instrument for holding a musical score placed on the upper surface of a music stand,
A stay having a fitting hole that is fixed to the lower surface of the music stand, extends in the front-rear direction, and opens to the front surface, and a screw hole orthogonal to the fitting hole,
A position corresponding to the screw hole of the fitting portion, which is formed in an L shape from a fitting portion that is rotatably fitted in the fitting hole and a holding portion that extends perpendicularly from the front end of the fitting portion. A holder rod formed with an engagement groove continuous in the circumferential direction;
A set screw for engaging the holder rod by having an engaging portion at the tip, screwed into the screw hole of the stay, and the engaging portion engaging with the engaging groove;
A musical score holding device for a keyboard instrument, comprising:   The musical score holding device for a keyboard instrument according to claim 1, wherein the engaging groove of the holder rod and the engaging portion of the set screw have complementary shapes.   The musical score holding device for a keyboard instrument according to claim 1 or 2, wherein a cap having friction and elasticity is attached to a tip of the holding portion of the holder rod.

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