JPH0810052A - Music stand support equipment for keyboard musical instrument - Google Patents

Abstract

PURPOSE:To provide a music stand equipment for a keyboard music instrument, which holds a music stand firmly for enhancing safety when it is out of use, comes close to a player in position, is easy to make a note on a sheet of music paper when it is in use, and concurrently simple in constitution. CONSTITUTION:When a music stand 4 is not in use where it is fallen down over a base stand 1, a pin 8 acting as a rotation fulcrum is out of a place close to the keyboard side end section 1a of the base stand 1, and it is prevented from being rotated in the vertical direction. Meanwhile, the music stand 4 is slid to the keyboard side, it is rotated counterclockwise so as to be erected in a state that the pin 8 is positioned at a place close to the keyboard side end section 1a, an engaging section 9a is engaged with an engaged section 9b, the music stand is thereby kept at a rotated and erected condition, therefore, the music stand 4 is erected so as to be supported over a music stand support stand 3, and as a result, it is in a condition ready for use.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a musical score plate supporting device for a keyboard musical instrument, which is provided in a keyboard musical instrument such as an electronic piano and supports the musical score plate by inclining it at a predetermined angle.

[0002]

2. Description of the Related Art Conventionally, as a music plate supporting device for a keyboard musical instrument of this type, Japanese Utility Model Publication No. 53-2041 (hereinafter referred to as the first
It is disclosed in JP-A-63-22892 (hereinafter referred to as the second conventional example).

In the first conventional example, when the musical score plate is supported at an angle set in advance, when the musical score plate is manually raised to the keyboard side (player side), the support slides in the guide member. While standing up together with the music board. Then, when the music plate is raised up to the maximum where the support locking portion reaches the lower end edge of the guide member, the music locking plate is returned in the direction opposite to the upright direction. The music score plate is held in a locked state while being brought into contact with, and the music plate is supported on the top plate while being inclined at a predetermined angle. Further, when the engaging portion of the support is removed from the engaging portion, the music score plate is folded on the top plate in a state of being folded and overlapped with the support.

In the second conventional example, when the musical score plate is tilted at a predetermined angle and is supported, if the musical score plate is manually raised to the keyboard side, the other rotating member causes the musical score plate to stand up. The music score plate is tilted at a predetermined angle and supported on the top plate by rotating in conjunction with one of the rotary members and contacting the stopper with the upper surface of the fixing member from the middle. Also, tilt the music plate to the keyboard side until one of the rotating members stops rotating,
Next, when the music plate is tilted to the anti-keyboard side, it is possible to rotate one of the rotating members to the anti-keyboard side, and when the other rotating member is completely tilted and tilted to the back on the top, one of the The rotating member overlaps with the fixed member, and the music score plate is folded on the top plate.

[0005]

However, in both the above-mentioned first and second conventional examples, the music score plate is unstable because it freely moves, especially in the unused state (folded state). Therefore, there is a problem that the musical score plate wobbles when the keyboard musical instrument is conveyed while being laid sideways.

Further, in both the above-mentioned first and second conventional examples, when the music score plate is inadvertently raised (in a state in which it is neither raised nor folded), the standing state is not locked. In addition, there is a problem that when a child or the like plays on a keyboard instrument and comes into contact with the musical score plate, the musical score plate may fall and cause an unexpected injury.

Further, in both the above-mentioned first and second conventional examples, since the musical score plate in use is erected and supported on the top plate, the position of the musical score plate in use is far from the player. However, there is a problem that it is inconvenient when the performer writes a memo on the score.

The present invention has been made in view of the above-mentioned problems of the above-mentioned conventional technique, and an object of the present invention is to prevent the score plate from moving in a non-use state and to ensure safety. Another object of the present invention is to provide a music scoreboard support device for a keyboard musical instrument which is high in height, the position of the music scoreboard in the state of use is closer to the player, it is easy to write notes on the music score, and the configuration is simple.

[0009]

In order to achieve the above-mentioned object, a musical score plate supporting device for a keyboard musical instrument according to a first aspect of the present invention is a musical score plate, a base on which the musical score plate is mounted, and the base. And a musical score plate support placed between the keyboard and a keyboard lower than the base via a step, and the musical score plate provided on the base and moved toward the keyboard side and the opposite keyboard side. A guide portion that freely guides and a slide that is provided at an intermediate portion of the back surface of the music score plate and that is slidably engaged with the guide portion toward the keyboard side and the non-keyboard side and is also rotatable in the vertical direction. And a musical score plate holding portion that holds the musical score plate in a used state.The musical score plate rotates vertically only when its rotation fulcrum is located near the keyboard side end of the base. Is acceptable,
The musical score plate is rotated downward, and then is slid toward the opposite keyboard side so that the musical score plate is put down on the base to be in an unused state and slid toward the keyboard side, and then upward. It is characterized in that when it is rotated, it is erected and supported on the music plate support stand to be in a use state.

In order to achieve the same object, the musical score plate holding portion is provided on the musical score plate support base and an engaging portion provided on an end portion on the keyboard side of the sliding portion of the musical score plate. It is preferable that the musical score plate comprises an engaged portion that is engageable with and disengageable from the engaging portion when the musical score plate is in a used state.

Further, in order to achieve the same object, either one of the engaging portion and the engaged portion is biased in the engaging direction by a spring, and either the musical score plate or the musical score plate supporting base is urged. It is desirable that the engagement state can be released by a release operator provided on one side.

In order to achieve the same object, the music score plate holding portion is rotatably provided so as to be capable of undulating on a back surface middle portion of the music score plate and is supported by a spring in a standing direction. When the music score plate is in a use state, the support leg stands up between the music score plate and the base by the urging force of the spring, and the music score plate is in an unused state. At this time, it is desirable that the support leg be in a lying position between the music plate and the base against the biasing force of the spring.

Further, in order to achieve the same purpose, it is desirable to provide the music score plate support with a music score stopper for stopping a music score leaning against the music score plate in use.

Here, in order to make the above description of "rotating the music plate upward and downward" clearer, it is defined as follows. "Rotating upward" means rotating upward so as to lift the upper free end in use, and similarly "rotating downward" means upper free end in use. It means to rotate downward so that it falls down. The same applies to the following when this description is adopted.

[0015]

In the musical instrument plate supporting apparatus for a keyboard instrument according to the present invention, when the musical instrument plate is placed on the base and is in a non-use state, the rotation fulcrum thereof is near the end of the base on the keyboard side. Since it is located, its vertical rotation is blocked. For this reason,
When the music plate is not in use, it is securely fixed and does not move, which is highly safe.

Further, the musical score plate in the unused state is slid to the keyboard side so that the pivotal fulcrum thereof is located near the keyboard side end of the base, and the musical score plate is rotated and erected in the upward direction. By holding the rotation standing state by the holding part,
The musical score plate is erected and supported on the musical score plate support stand to be in use. As a result, the position of the music plate in the use state becomes closer to the player.

Further, by rotating the musical score plate in the used state downward and then sliding the musical score plate to the opposite side of the keyboard, the musical score plate is laid on the base and placed in a non-use state.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) First, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing the configuration of a musical score plate support device for a keyboard instrument according to a first embodiment of the present invention, in which reference numeral 1 is a base (top plate) of a keyboard instrument such as an electronic piano, Between the base 1 and a keyboard (not shown) lower than the base 1, a music plate support base 3 is arranged via a vertical step 2. The keyboard is arranged on the lower left side of the front end of the music score plate support 3 in the figure. 4 is a music plate for leaning a music score (not shown), which is the base 1 when not in use
It is laid on top (indicated by a chain double-dashed line in the figure) and is erected and supported on the music plate support base 3 (indicated by a solid line in the figure) during use.

On the upper surface of the base 1, there are provided a pair of guide portions 5 provided at a predetermined interval in the left-right direction and having a predetermined length in the front-rear direction (left-right direction in the drawing). The guide portion 5 is an elongated metal plate member having an L-shaped cross section having a length extending from a keyboard side (player side) end portion (a left end portion in the drawing) 1a of the base 1 to a substantially middle portion in the front-rear direction. And is fixed to the base 1 with screws or the like. A slit 6 is formed from one end portion (left end portion in the drawing) 5a of the guide portion 5 to a substantially middle portion in the longitudinal direction. One end 5 of the guide part 5
The letter a is slightly protruded toward the keyboard side from the keyboard side end portion 1a of the base 1, and is bent downward. Therefore, the music score plate 4 can be linearly moved up and down by the length of the slit 6 located at the bent portion. This is the engagement portion 9a and the engaged portion 9 of the music score plate holding portion 9 described later.
This is for making it possible to freely engage and disengage with b.

In addition, a pair of slide portions 7 are provided at an intermediate portion of the back surface of the music plate 4 with a predetermined interval in the key disposing direction of the keyboard and a predetermined length in the front-rear direction (left-right direction in the drawing). There is. The slide portion 7 is made of an elongated metal plate member having a U-shaped cross section, and is fixed to the music score plate 4 with screws or the like.

One end portion (left end portion in the figure) 7a of both side walls of the slide portion 7 is inserted into the slit 6 of the guide portion 5 through the pin 8 in the front-back direction, that is, from the keyboard side (player side). It is engaged slidably toward the keyboard side (counter-player side) and its opposite side, and rotatable in the up-down direction (counterclockwise and clockwise in the figure).

The musical score plate 4 is provided only when the pin 8 which is the pivot point thereof is located near the keyboard side end 1a of the base 1, that is, when the pin 8 is located on the keyboard side end of the slit 6 (the left side end in the figure). (Part) 6a is allowed to rotate in the vertical direction only. Further, the music plate 4 is laid on the base 1 by turning downward (clockwise in the figure) about the pin 8 and sliding toward the counter keyboard side (right side in the figure). Not used (state indicated by broken line in the figure)
Becomes Further, the music plate 4 is erected upright (counterclockwise in the drawing) about the pin 8 as a fulcrum to be erected and supported on the music plate support base 3 to be in a use state (state of a solid line in the drawing). Become.

The musical score plate 4 is held in use by a musical score plate holding section 9. The musical score plate holding portion 9 is provided on the musical score plate support base 3 and an engaging portion 9a composed of a convex portion provided on the keyboard side end portion 4a of the musical score plate 4 with respect to the slide portion 7 and the engaging portion 9a. And an engaged portion 9b, which is a concave portion that engages with and disengages with. The engaging portion 9a is formed by fixing a plate member to the back surface of the keyboard side end portion 4a of the musical score plate 4 with screws or the like. The engaged portion 9b is formed by fitting and fixing a member having a U-shaped cross section in a fitting groove on the music score plate support 3. When the musical score plate 4 is put into use, the engaging portion 9a is engaged with the engaged portion 9b.
The musical score plate 4 is held in a used state by engaging with. The music score plate support 3 is provided with a music score stopper 10 for stopping a music score (not shown) leaning against the music score plate 4 in use.

Next, the operation of the musical score plate supporting device of the keyboard musical instrument of the present embodiment having the above-mentioned structure will be described.

First, the operation for changing the musical score plate 4 from the non-use state shown by the two-dot chain line in the figure to the use state shown by the solid line will be described. Hold the upper end 4b of the musical score plate 4 in the unused state by hand and slide it to the left side in the drawing on the keyboard side.
Then, the pin 8 which is the pivot of the music plate 4 is inserted into the slit 6
When the pin 8 is moved toward the player and is located near the keyboard-side end 1a of the base 1, rotation about the pin 8 of the music plate 4 is allowed. Therefore, the music plate 4 is rotated upward (counterclockwise in the figure) about the pin 8 so that the pin 8 moves through the bent portion of the slit 6 toward the keyboard side end portion 6a. While the music plate 4 linearly moves downward, the guided portion 4 on the back surface of the music plate 4
While c is guided by the outer guide surface 5b of the guide portion 5, the engaging portion 9a automatically engages with the engaged portion 9b as the c moves. At this time, since the guided portion 4c is guided to the guide surface 5b by gravity only by releasing the hand at the time when the turning operation starts, the engaging portion 9a automatically moves to the engaged portion 9b. Engage. As a result, as shown by the solid line in the figure, the musical score plate 4 is held in a use state in which it is erected and supported on the musical score plate support base 3 in a state inclined at a predetermined angle. The musical score is leaned against the musical score plate 4 thus used, and the musical score stopped by the musical score stopper 10 does not move.

Next, an operation for setting the musical score plate 4 in the used state to the non-used state will be described. By holding the musical score plate 4 in use by hand and moving it upward, the engagement between the engaging portion 9a and the engaged portion 9b is released. Then, the pin 8 reaches the bent portion of the slit 6 and the end portion 1 of the base 1 on the keyboard side.
When located in the vicinity of a, rotation with the pin 8 of the music plate 4 as a rotation fulcrum is allowed. Therefore, the musical score plate 4 is rotated downward (clockwise in the figure) about the pin 8 and slid to the right in the figure on the opposite keyboard side. Then, the pin 8 moves in the slit 6, and when the pin 8 is positioned at the end 6b of the slit 6 on the side opposite the keyboard, the music plate 4 is prevented from sliding, and the music plate 4 falls down on the base 1. It is placed and is in an unused state. In the non-use state, even if the pin 8 of the musical score plate 4 and the smooth surface of the slit 6 are in contact with each other and the rotational force is applied to the musical score plate 4, the end of the guide surface 5b on the keyboard side or the end on the opposite side of the keyboard is Since the contact with the surface of the music plate 4 is prevented, the rotation of the music plate 4 around the pin 8 is prevented, and the music plate 4 is held in an unused state and does not move unnecessarily, which is safe.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a block diagram showing a configuration of a music plate support device for a keyboard instrument according to a second embodiment of the present invention. In FIG. 2, 11 is a base (top plate) of a keyboard instrument such as an electronic piano, Between the base 11 and a keyboard (not shown) lower than the base 11, a music plate support 13 is disposed via a vertical step 12. Reference numeral 14 is a musical score plate for leaning a musical score (not shown), which is laid down on the base 11 when not in use (indicated by a chain double-dashed line in the figure) and is erected and supported on the musical score plate support 13 during use ( The solid line in the figure).

A pair of guide portions 15 are provided on the upper surface of the base 11 with a predetermined interval in the left-right direction and a predetermined length in the front-rear direction (left-right direction in the drawing). The guide portion 15 is composed of an elongated metal plate member having an L-shaped cross section having a length extending from the keyboard side end portion 11a of the base 11 to a substantially middle portion in the front-rear direction, and is fixed to the base 11 by screws or the like. . A slit 16 is formed from one end portion 15a of the guide portion 15 to a substantially middle portion in the length direction.

A pair of slide portions 17 are provided in the middle portion of the back surface of the music plate 14 with a predetermined interval in the key disposition direction of the keyboard and a predetermined length in the front-rear direction (left-right direction in the drawing).
Is provided. The slide portion 17 is made of a slender metal plate member having a U-shaped cross section, and the music score plate 14 is formed by screws or the like.
It is fixed to.

Then, it is slidable in the front-rear direction with respect to the slit 16 of the guide portion 15 through the pins 18 provided at the one end portions 17a of both side walls of the slide portion 17, and is freely rotatable in the vertical direction in the state of FIG. Is engaged with.

That is, the musical score plate 14 is allowed to rotate in the vertical direction only when the pin 18, which is the fulcrum of rotation, is located near the keyboard-side end 11a of the base 11. Also, the music plate 1
4 is laid down on the base 11 by rotating downward with the pin 18 as a fulcrum and sliding toward the opposite keyboard side, and is in an unused state (state of two-dot chain line in the figure). . Further, the musical score plate 14 is erected and supported on the musical score plate support base 13 by rotating upward with the pin 18 as a fulcrum, and is brought into a use state (a solid line state in the drawing).

The musical score plate 14 is held in use by a musical score plate holding portion 19. The music plate holding portion 19 is provided with an engaging portion 19a formed of a recessed portion provided on the keyboard side end portion 14a with respect to the sliding portion 17 of the music sheet 14 and with the music plate supporting base 13 and the engaging portion 19a. And an engaged portion 19b formed of a convex portion that engages with and disengages freely. The engaging portion 19
Reference symbol a is a groove having a U-shaped cross section formed on the keyboard side end portion 14a of the musical score plate 14. The engaged portion 19b is formed by a protrusion provided on the upper surface of the tip of a rotating member 21 provided on the music score plate support 13 so as to be rotatable in the up-down direction (left-right direction in the drawing) about the shaft 20. Become. The rotating member 21 is rotationally biased by a spring 22 in a direction (counterclockwise direction in the drawing) in which the protrusion, which is the engaged portion 19b, engages with the engaging portion 19a.

When the musical score plate 14 is put into use,
The musical score plate 14 is held in a used state by the engagement of the engaging portion 19a and the engaged portion 19b. Rotating member 21
A release button (release operator) 23 is provided on the
By pressing the release button 23, the rotating member 21 is rotated in the clockwise direction in the figure against the urging force of the spring 22, so that the engaging portion 19a and the engaged portion 19b are engaged with each other. It can be released. Music stand support 1
3 is provided with a musical score stopper 24 for stopping a musical score (not shown) leaning against the musical score plate 14 in use.

Next, the operation of the musical score plate support device of the keyboard musical instrument of the present embodiment having the above-mentioned structure will be described.

First, the operation for changing the musical score plate 14 from the non-use state shown by the two-dot chain line in the figure to the use state shown by the solid line will be described. The upper end 1 of the music plate 14 in the unused state
Hold 4b by hand and slide it to the left in the figure on the keyboard side. Then, the pin 18, which is the fulcrum of rotation of the music plate 14, moves in the slit 16, and the pin 18 moves to the base 11.
When it is located near the keyboard side end 11a, rotation about the pin 18 of the music plate 14 is allowed. Therefore, the music plate 14 is rotated upward (counterclockwise in the figure) about the pin 18, and the engaging portion 19a engages with the engaged portion 19b at the rotational end position. As a result, as shown by the solid line in the figure, the musical score plate 14 is held in a use state in which it is erected and supported on the musical score plate support base 13 in a state inclined at a predetermined angle. The musical score is thus leaned against the musical score plate 14 which has been used in this way, and the musical score which has been leaned against does not shift due to the musical score stopper 24.

Next, an operation for setting the musical score plate 14 in the used state to the non-used state will be described. Release button 2
By pressing 3, the engaging portion 19a and the engaged portion 19
Disengage from b. In this state, the musical score plate 14 in use is held by hand and rotated downward (clockwise in the drawing) about the pin 18 and slid to the right in the drawing on the opposite keyboard side. Then, the pin 18 has the slit 1
6 and when the pin 18 is positioned at the end 16b of the slit 16 on the side opposite the keyboard, the music plate 14 is prevented from sliding, and the music plate 14 is laid down on the base 11 and is not used. It becomes a state. In the non-use state, the anti-keyboard side of the music scoreboard 14 is in contact with the guide portion 15 from the pin 18, so that the rotation of the music scoreboard 14 around the pin 18 is prevented, and the music scoreboard 14 is kept in the nonuse condition. It is safe because it doesn't move in a flood.

According to this embodiment, the engaging portion 19a and the engaged portion 19b are automatically engaged by the urging force of the spring 22, so that the engaging operation can be performed easily and reliably.

(Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a block diagram showing a configuration of a music plate support device for a keyboard instrument according to a third embodiment of the present invention, and FIG. 4 is a view taken in the direction of arrow A in FIG. In both figures,
Reference numeral 25 denotes a base (top plate) of a keyboard musical instrument such as an electronic piano. Between the base 25 and a keyboard (not shown) lower than the base 25, a music plate support base is provided via a vertical step 26. 27 are provided. Reference numeral 28 is a musical score plate for leaning a musical score (not shown), which is laid down on the base 25 when not in use (indicated by a chain double-dashed line in the figure) and used during operation.
It is erected and supported on the top (state shown by a solid line in FIGS. 3 and 4).

On the upper surface of the base 25, a predetermined interval is provided in the direction in which the keys of the keyboard are arranged, and the front-rear direction (the left-right direction in the drawing).
Is provided with a pair of guide portions 29 having a predetermined length. The guide portion 29 is composed of an elongated metal plate member having an L-shaped cross section having a length extending from the keyboard side end portion 25a of the base 25 to a substantially middle portion in the front-rear direction, and is fixed to the base 25 by screws or the like. . A slit 30 is formed from one end 29a of the guide portion 29 over substantially the entire length direction. Further, a rack 31 is formed on one side of the guide portion 29 along the longitudinal direction thereof. In addition, a pair of slide portions 32 having a predetermined distance in the left-right direction and having a predetermined length in the front-rear direction (left-right direction in the drawing) are provided in an intermediate portion of the back surface of the music plate 28. The slide portion 32 is made of a bracket-shaped member and is fixed to the music score plate 28 with screws or the like.

Both ends of the shaft 33, which is inserted between the both side walls of the pair of slide parts 32, are slidable in the slits 30 of the guide part 29 in the front-rear direction and vertically about the shaft 33. Is rotatably engaged with. Further, pinions 34 are rotatably attached to both ends of the shaft 33, and these pinions 34 are provided in mesh with a rack 31 on one side of the guide portion 29.

The musical score plate 28 has a pin 3 which is a fulcrum of its rotation.
Only when 3 is located near the keyboard-side end 25a of the base 25, vertical rotation is permitted. The music board 28 is
By rotating downward with the pin 33 as a fulcrum and sliding toward the counter keyboard side, the pin 33 is laid down on the base 25 to be in an unused state (a state indicated by a chain double-dashed line in the figure).
Further, the musical score plate 28 is erected and supported on the musical score plate support base 27 by being rotated upward with the pin 33 as a fulcrum to be in a usable state (a solid line state in the drawing).

Further, the musical score plate 28 is held in the used state while the musical score plate holding portion 35 stands up while maintaining the usable state. The music score plate holding portion 35 is composed of support legs 35a rotatably provided so as to be undulated on the back surface of the intermediate portion of the music score plate 28, that is, the back surface on the side opposite the keyboard from the slide portion 29. One end of the support leg 35a is rotatably attached to the back surface of the music plate 28 by a shaft 36, and is urged to rotate in one direction (counterclockwise direction in FIG. 4) by a spring 37. The music score plate support 27 is provided with a music score stopper 38 for stopping a music score (not shown) leaning against the music score plate 28 in use.

Next, the operation of the music plate support device of the keyboard musical instrument of this embodiment having the above-mentioned structure will be described.

First, the operation of changing the musical score plate 28 from the unused state shown by the two-dot chain line in the figure to the used state shown by the solid line will be described. The upper end 2 of the music plate 28 in the unused state
Hold 8b by hand and slide it to the left in the figure on the keyboard side. Then, the shaft 3 which is the fulcrum of rotation of the music plate 28
3 moves in the slit 30, and both pinions 34 rotate while meshing with the rack 31. Axis 33 is slit 30
Keyboard side end 30a, that is, the keyboard side end 25a of the base 25
When it is located in the vicinity, rotation about the shaft 33 of the music plate 28 as a rotation fulcrum is allowed. Therefore, when the musical score plate 28 is rotated upward (counterclockwise in the drawing) about the shaft 33, both support legs 35a are rotated in one direction by the biasing force of the spring 37 in accordance with the rotation. , A state of standing upright between the base 25 and the music plate 28 (state of solid line in FIGS. 3 and 4)
Becomes Then, the keyboard side end 28a of the music plate 28 comes into contact with the music plate support base 27 at the upper end position of rotation about the shaft 33 of the music plate 28, and the music plate 28 is indicated by the solid line in FIG. As shown in the figure, it is held in a use state in which it is erected and supported in a state of being inclined at a predetermined angle on the music plate support base 27. The musical score is leaned against the musical score plate 28 thus used, and the musical score stopped by the musical score stopper 38 does not move.

Next, an operation for setting the musical score plate 28 in the used state to the non-used state will be described. Both support legs 35
A is rotated in the other direction against the biasing force of the spring 37. In this state, the musical score plate 28 in use is held by hand and rotated downward (clockwise in the figure) about the shaft 33, and further, it is slid to the right side in the figure on the anti-keyboard side. . Then, the shaft 33 moves in the slit 30, and both pinions 34 rotate while meshing with the rack 31. The shaft 33 is the end 30 of the slit 30 on the side opposite to the keyboard.
When located at position b, the music plate 28 is prevented from sliding, and the music plate 14 is laid down on the base 11 and is in an unused state. In the non-use state, both support legs 35a resist the urging force of the spring 37 due to the gravity of the music score plate 28.
And the base 25 is in a lying position. In such a non-use state, since the non-keyboard side of the shaft 33 of the music plate 28 is in contact with the guide portion 29, the shaft 3 of the music plate 28 is in contact.
It is safe because rotation about 3 is blocked, it is kept in an unused state, and it does not move unnecessarily.

According to this embodiment, since both supporting legs 34a are rotated in one direction by the urging force of the spring 37 to automatically hold the musical score plate 28 in the used state, the used state of the musical score plate 28 is maintained. The operation can be performed easily and surely. Further, when the music plate 28 is slid, both pinions 34 are moved to the rack 3.
Since it rotates while meshing with 1, the musical score plate 28 slides smoothly.

(Other Embodiments) The present invention is not limited to the above embodiments. For example, as shown in FIG. 5, a structure of sliding and rotating the music stand may be embedded on the top plate 1. 5 is a view D in FIG.
The cross-sectional structure seen from the rear at the position of -D is shown by the embedded structure. In the figure, the same numbers as in FIG. 1 are assigned and the description thereof is omitted. Note that FIG.
Reference numeral 5d denotes a screw for abutting the horizontal mounting portion 5c of the guide portion 5 on the upper surface of the groove 1b formed by engraving the upper surface of the base 1 and screwing the screw from above, and 7c denotes a horizontal surface 7b of the slide portion 7. Is a flat head screw for fixing the to the music plate 4.

With the embedded structure as shown in FIG. 5, even if an infant or the like accidentally rides on the base 1 and plays, the limbs and the like can never be injured, and a very safe keyboard instrument can be provided. A music plate support device is realized.

Furthermore, the present invention is not limited to the various embodiments described above, and it goes without saying that various modifications may be made without departing from the spirit of the invention.

[0051]

As described above in detail, according to the musical score plate supporting device of the keyboard musical instrument of the present invention, when the musical score plate is laid down on the base and is in an unused state, its rotation fulcrum is Since it is located near the keyboard side end of the base, it is prevented from rotating in the vertical direction. Therefore, when the musical score plate is not in use, it is securely fixed and does not move, which is highly safe and has a simple structure.

Also, by sliding the music plate to the keyboard side,
The musical score plate is made to be a musical score by holding the rotational fulcrum in a state in which it is located near the keyboard-side end of the base and rotating and standing it counterclockwise, and holding the rotating standing state by the musical score plate holding portion. It stands up on the plate support and is ready for use.
As a result, the position of the musical score plate in the use state becomes closer to the player, and it is easy to write notes on the musical score.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a music plate support device for a keyboard instrument according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a music plate support device for a keyboard instrument according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a music plate support device for a keyboard instrument according to a third embodiment of the present invention.

FIG. 4 is a view on arrow A in FIG.

FIG. 5 is a sectional view for explaining a music plate support device for a keyboard instrument according to a fourth embodiment of the present invention.

[Explanation of symbols]

 1 Base 2 Step 3 Music score plate support 4 Music score plate 5 Guide part 7 Slide part 9 Music score plate holding part 9a Engagement part 9b Engaged part 10 Music score stop 11 Base 12 Step part 13 Music score plate support 14 Music score Plate 15 Guide Part 17 Sliding Part 19 Musical Plate Retaining Part 19a Engaging Part 19b Engaged Part 24 Musical Stop 25 Base Stand 26 Step 27 Musical Plate Support 28 Musical Plate 29 Guide Part 32 Sliding Part 35 Musical Plate Holding Part 35a Support leg 37 Spring 38 Music score stop

Claims (5)

[Claims] 1. A music board and a base on which the music board is placed,
A music plate support base disposed via a step between the base and a keyboard lower than the base, and the music plate provided on the base and placed on the keyboard side and the non-keyboard side. A guide part that is movably guided toward the music score plate, and a guide part that is provided at an intermediate part of the back surface of the music plate and that is slidably engaged with the guide part toward the keyboard side and the non-keyboard side and is rotatable in the vertical direction. It consists of a slide part that fits and a music plate holding part that holds the music plate in a used state.The music plate moves vertically only when its rotation fulcrum is located near the keyboard side end of the base. Is allowed to rotate, the musical score plate is rotated downward, and then is slid toward the opposite keyboard side so that the musical score board is laid down on the base to be in an unused state and directed toward the keyboard side. After sliding, it is supported upright on the music plate support by rotating it upward. Music rack supporting device keyboard instrument, characterized by the use state Te. 2. The musical score plate holding portion is provided on an engaging portion provided on an end portion of the musical score plate closer to the keyboard than the slide portion of the musical score plate, and is provided on the musical score plate support base, and sets the musical score plate in a used state. 2. A music scoreboard support device for a keyboard instrument according to claim 1, further comprising: an engaged portion that engages with the engaging portion in a detachable manner. 3. One of the engaging portion and the engaged portion is biased in the engaging direction by a spring, and a release operator provided on one of the musical score plate and the musical score plate support is used. The musical score plate supporting device for a keyboard instrument according to claim 2, wherein the engaged state can be released. 4. The music score plate holding portion includes a support leg that is rotatably provided so as to be capable of undulating on a back surface middle portion of the music score plate and is biased by a spring in a standing direction. When in use, the support leg stands up between the music plate and the base by the biasing force of the spring, and when the music plate is not in use, the support leg is 2. The musical score plate supporting device for a keyboard instrument according to claim 1, wherein the musical score plate supporting device is in a lying position between the musical score plate and the base against the biasing force of a spring. 5. The music plate support device for a keyboard instrument according to claim 1, wherein the music plate support base is provided with a music score stopper for stopping a music score leaning against the music plate in use. .