Musical instrument music stand support structure

Abstract

To bring a music score plate into an appropriate posture at a position closer to a player side than a front plate.SOLUTION: A music score plate-supporting structure of a musical instrument comprises: a music score plate 20; and support mechanism parts SL, SR which movably support the music score plate 20 with respect to a front plate 16 of a musical instrument main body 101. The support mechanism parts SL, SR comprise: first rotating parts H1L, H1R which connect connecting pieces 31L, 31R and the front plate 16 in a relatively rotatable manner; and second rotating parts H2L, H2R which connect the connecting pieces 31L, 31R and the music score plate 20 in the relatively rotatable manner.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to a scoreboard support structure for musical instruments.

Background Art

[0002] Conventionally, as a scoreboard support structure for supporting a score, those applied to musical instruments such as pianos are known. For example, in Patent Documents 1, 2, and 3, the scoreboard rotates with respect to the top plate of the musical instrument body and stands upright or lies down. When the scoreboard rotates, the tip of a rod-shaped member provided on the scoreboard moves in a guide groove provided on the top plate or the like.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the scoreboard support structures disclosed in Patent Documents 1, 2, and 3 are all applied to grand pianos and do not assume application to other forms of musical instruments such as upright pianos.

[0005] One object of the present invention is to provide a scoreboard support structure for a musical instrument that can place the scoreboard in an appropriate posture at a position closer to the performer than the front plate.

Means for Solving the Problems

[0006] According to one embodiment of the present invention, the instrument comprises a music stand and a support mechanism that movably supports the music stand with respect to the front plate of the instrument body, the support mechanism comprising a connecting part for connecting the music stand and the instrument body, a first rotating part that rotatably connects the connecting part and the front plate relative to each other, and a second rotating part that rotatably connects the connecting part and the music stand relative to each other, wherein the position of the rotation center of the second rotating part is relative to the music stand. Fixed A support structure for the music stand of a musical instrument is provided. [Effects of the Invention]

[0007] According to one embodiment of the present invention, the music stand can be positioned in an appropriate posture closer to the performer than the front board. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view of a musical instrument to which a music stand support structure is applied. [Figure 2] This is a front view of the instrument. [Figure 3] This is a top view showing the music stand and its surrounding components. [Figure 4] This is a perspective view of the guide section. [Figure 5] This is a perspective view of the mechanism for supporting the music stand on the front panel. [Figure 6] This is a partial cross-sectional view of the instrument along line AA in Figure 3. [Figure 7] This is a partial cross-sectional view of the instrument along line AA in Figure 3. [Figure 8] This is a partial cross-sectional view of the instrument along line AA in Figure 3. [Modes for carrying out the invention]

[0009] Embodiments of the present invention will be described below with reference to the drawings.

[0010] Figure 1 is a perspective view of a musical instrument to which a music stand support structure according to one embodiment of the present invention is applied. This instrument 100 is an upright instrument, for example, an electronic upright piano. The instrument 100 has an instrument body 101 and a keyboard cover 14, and the keyboard section (not shown) is covered by the keyboard cover 14. Hereafter, the left-right direction of the instrument 100 will be based on the direction as seen from the performer, and the front-back direction will be defined as the performer's side being the front.

[0011] The instrument body 101 has a top plate 12, a front plate 16, a left side plate 11L and a right side plate 11R, a left decorative panel 13L and a right decorative panel 13R. The top plate 12 is provided extending from the upper end of the side plate 11L to the upper end of the side plate 11R. The front plate 16 is positioned between the front of the side plate 11L and the front of the side plate 11R. A music stand 20 is also provided movably on the instrument body 101. The music stand 20 can support sheet music, electronic pads, etc. Hereafter, sheet music, electronic pads, etc. supported by the music stand 20 will be collectively referred to as sheet music, etc. 15. In Figure 1, an electronic pad is shown as the supported sheet music, etc. 15. The music stand 20 has a back plate 21, a music stand 22, and multiple music stand holders 23. The music stand 22 supports the lower end of the sheet music, etc. 15, and the back plate 21 supports the back of the sheet music, etc. 15.

[0012] Figure 2 is a front view of the instrument 100. Figure 3 is a top view showing the music stand 20 and its surrounding components. Figure 3 shows the front plate 16, music stand 20, decorative panels 13L and 13R, as well as the guide section 60, etc. Decorative panels 13L and 13R are fixed to the front of the front plate 16 by adhesive or the like. In the left-right direction, the music stand 20 is located between decorative panels 13L and 13R.

[0013] The performer can raise or lower the music holder 23. Raising the music holder 23 prevents the lower end of the music sheet 15 placed on the music holder 22 from sliding forward. The instrument 100 also has a mechanism 200 for supporting the music board 20 on the front plate 16.

[0014] FIG. 4 is a perspective view of the guide portion 60. FIG. 5 is a perspective view of the mechanism 200. FIGS. 6 to 8 are partial cross-sectional views of the musical instrument 100 taken along the line A-A of FIG. 3.

[0015] As shown in FIG. 4, the guide portion 60 is configured in a box shape having a hollow portion 60a and is fixed to the front plate 16. The guide portion 60 has flange portions 61, 62, 63, 64, and fastening holes 65 are formed in these flange portions 61, 62, 63, 64. A hole 16a corresponding to the hollow portion 60a is formed in the front plate 16 (see FIGS. 6 to 8). With the flange portions 61 to 64 abutted against the back surface of the front plate 16 so that the hollow portion 60a and the hole 16a coincide, the flange portions 61 to 64 are fastened to the back surface of the front plate l6 by screws through the fastening holes 65. As a result, the guide portion 60 is fixed to the front plate 16 in a state where the hollow portion 60a and the hole 16a are connected.

[0016] A pair of groove members 66L and ,66R are provided in the hollow portion 60a. A pair of guide grooves 67 are formed in the groove members 66L and 66R (only the guide groove 67 of the groove member 66L is shown) (see also FIGS. 6 to 8). The guide groove ,67 of the groove member 66L and the guide groove 67 of the groove member 66R are symmetric with respect to the left and right and face each other.

[0017] As shown in FIGS. 6 to 8, a support rod 24 is fixed at a position near the lower part of the back plate 21 of the music score plate 20. One end 24a of the support rod 24 is fixed to the back surface of the back plate 21 of the music score plate 20 with screws, and the other end 24b of the support rod 24 passes through the hole 16a and is inserted into the hollow portion 60a of the guide portion 60. A pin 25 protruding in the left-right direction is fixed to the other end 24b (see also FIG. 3). The left and right tips of the pin 25 are arranged so as to engage with the guide grooves 67 of the groove members 66L and 66R. A speaker 26 is arranged below the top plate 12.

[0018] As shown in FIG. 5, the mechanism 200 is composed of a left support mechanism part SL, a right support mechanism part SR, and a bridge part 34 that connects the support mechanism part SL and the support mechanism part SR. By the mechanism 200, the music score board 20 is movable relative to the front plate 16 at least between a storage position (first position), which is the initial position, and a main use position (second position), which is mainly used for placing music scores. In FIGS. 2, 3, and 6, the music score board 20 is in the storage position, and in FIGS. 1 and 7, the music score board 20 is in the main use position.

[0019] The support mechanism part SL is configured as follows. The support mechanism part SL includes a front plate attachment part 40L, a connecting fitting 30L, and a music score board attachment part 50L. All of these are plate-shaped members made of metal. The front plate attachment part 40L includes an attachment piece 41L and a front plate side rotation shaft part 42L. The connecting fitting 30L (connecting part) includes a connecting piece 31L, a front plate side bearing part 32L, and a music score board side bearing part 33L. The music score board attachment part 50L includes an attachment piece 51L and a music score board side rotation shaft part 52L.

[0020] The front plate side rotation shaft part 42L and the front plate side bearing part 32L are connected so as to form a hinge structure, thereby forming a first rotation part H1L. Therefore, with the rotation center C1L of the first rotation part H1L as the center, the attachment piece 41L and the connecting piece 31L are relatively rotatable.

[0021] The music score board side rotation shaft part 52L and the music score board side bearing part 33L are connected so as to form a hinge structure, thereby forming a second rotation part H2L. Therefore, with the rotation center C2L of the second rotation part H2L as the center, the attachment piece 51L and the connecting piece 31L are relatively rotatable.

[0022] The support mechanism SR is configured similarly and symmetrically to the support mechanism SL. Therefore, the front plate mounting part 40R, mounting piece 41R, front plate side pivot shaft part 42R, music stand mounting part 50R, mounting piece 51R, and music stand side pivot shaft part 52R are configured similarly to the front plate mounting part 40L, mounting piece 41L, front plate side pivot shaft part 42L, music stand mounting part 50L, mounting piece 51L, and music stand side pivot shaft part 52L, respectively. In addition, the connecting fitting 30R, connecting piece 31R (connecting part), front plate side bearing part 32R, and music stand side bearing part 33R are configured similarly to the connecting fitting 30L, connecting piece 31L, front plate side bearing part 32L, and music stand side bearing part 33L, respectively.

[0023] In the support mechanism SR, the first rotating part H1R is formed by the front plate side rotating shaft part 42R and the front plate side bearing part 32R. Therefore, the mounting piece 41R and the connecting piece 31R are able to rotate relative to each other around the rotation center C1R of the first rotating part H1R. Furthermore, the second rotating part H2R is formed by the music stand side rotating shaft part 52R and the music stand side bearing part 33R. The mounting piece 51R and the connecting piece 31R are able to rotate relative to each other around the rotation center C2R of the second rotating part H2R.

[0024] Connecting pieces 31L and 31R are fixed to the left and right ends of the bridge section 34. Connecting pieces 31L and 31R are parallel. Therefore, the pivot center C1L and pivot center C1R are on the same straight line, and the pivot center C2L and pivot center C2R are on the same straight line. The pivot centers C1L and C1R and the pivot centers C2L and C2R are parallel to each other. Note that the relationship between the pivot shaft and bearing that constitute each pivot part may be reversed from the example given above.

[0025] Support mechanisms SL and SR work together to movably support the music stand 20 relative to the front plate 16. The mounting configuration of the music stand 20 and the front plate 16 is the same for both support mechanisms SL and SR.

[0026] As shown in Figures 7 and 8, the mounting piece 41L is fixed to the front surface of the front plate 16 with screws. Similarly, the mounting piece 41R is also fixed to the front surface of the front plate 16 with screws. Thus, the first rotating parts H1L and H1R connect the connecting pieces 31L and 31R to the front plate 16 so that they can rotate relative to each other. In addition, the mounting piece 51L is fixed to the back surface of the back plate 21 of the music stand 20 with screws. Similarly, the mounting piece 51R is also fixed to the back surface of the back plate 21 with screws. Thus, the second rotating parts H2L and H2R connect the connecting pieces 31L and 31R to the music stand 20 so that they can rotate relative to each other. Due to the relative rotation of the connecting pieces 31L and 31R with respect to the front plate 16 and the music stand 20, the music stand 20 can move to multiple positions, including the storage position and the main usage position, and its orientation can be changed.

[0027] As shown in Figure 8, the guide groove 67 is configured to form a closed loop. An elastic piece 69 is provided at the rear of the guide groove 67. The elastic piece 69 allows the pin 25 of the support rod 24 to pass only in the upward direction. Therefore, the pin 25 moves in the closed loop formed by the guide groove 67 in the counterclockwise direction shown in Figure 8. A downward-sloping hook portion 68 is provided in the middle of the groove portion of the upper path in the guide groove 67.

[0028] The movement of music stand 20 will be explained.

[0029] First, in the storage position (Figure 6), the pin 25 is located at the rearmost end of the guide groove 67. The pivot centers C1L and C1R of the first rotating parts H1L and H1R and the pivot centers C2L and C2R of the second rotating parts H2L and H2R are aligned in the vertical direction. The back plate 21 of the music stand 20 is parallel to the vertical direction, and the back of the back plate 21 is parallel to the front of the front plate 16. The back plate 21 is fitted between the decorative panels 13L and 13R in the left-right direction. The back of the back plate 21 faces the front of the front plate 16 from the front. The front surface 21a of the back plate 21 does not protrude forward relative to the side plates 11L and 11R.

[0030] When a performer pulls the music stand 20 forward from its storage position by holding the lower part of the music stand 20, the music stand 20 moves forward with rotation due to the rotation of the first rotating parts H1L and H1R and the second rotating parts H2L and H2R. At this time, the pin 25 follows the upper path of the guide groove 67 (a path from the rear end of the guide groove 67, via the upper side of the elastic piece 69, toward the front plate 16), and the posture of the music stand 20 changes depending on the position of the pin 25.

[0031] Eventually, when the pin 25 reaches the vicinity of the hook 68, the weight of the music stand 20 causes the pin 25 to fall into the hook 68 and stop. As shown in Figure 7, the movement of the music stand 20 is restricted in the primary position by the pin 25 getting caught in the hook 68. Therefore, even if you release your hand, the posture of the music stand 20 remains unchanged and stable.

[0032] From the primary position, if the performer pulls the music stand 20 further forward by holding the bottom of it, the music stand 20 moves further forward with rotation. As shown in Figure 8, when the pin 25 reaches the foremost part of the guide groove 67, the music stand 20 can no longer move forward. From this state, if the performer reduces the force pulling the music stand 20 forward or releases their hand from the music stand 20, the music stand 20 moves backward with rotation due to its own weight. At this time, the pin 25 follows the lower path of the guide groove 67 (the path from the foremost part of the guide groove 67 towards the underside of the elastic piece 69). Eventually, the pin 25 passes above the elastic piece 69 and reaches the rearmost part of the guide groove 67, and the music stand 20 returns to its stored position (Figure 6).

[0033] In the primary use position (Figure 7), the music stand 20 extends forward from the decorative panels 13L and 13R not only at the bottom but also at the top. Consequently, the back panel 21 is generally closer to the performer compared to the storage position. This is achieved because, in the primary use position, the rotation centers C2L and C2R of the second rotating parts H2L and H2R are located further forward in the front-to-back direction than the rotation centers C1L and C1R of the first rotating parts H1L and H1R. If the upper part of the music stand 20 were connected to the front panel 16 by a single rotating part, the lower part of the music stand 20 would simply rotate forward, and the position of the upper part of the back panel 21 would not change much, and it would not be closer to the performer. In this embodiment, since the music stand 20 is closer to the performer in the primary use position, the sheet music, etc. 15 is easier to see.

[0034] As shown in Figure 8, by making the maximum distance L2 that can be taken between the rotation centers C1L, C1R of the first rotating parts H1L, H1R and the rotation centers C2L, C2R of the second rotating parts H2L, H2R longer than the thickness B1 of the music stand 20, it becomes easy to ensure that the amount the music stand 20 protrudes is sufficient.

[0035] Furthermore, in the primary use position (Figure 7), the design ensures that, when viewed from the left or right, the front end 12a of the top plate 12 coincides with or does not protrude from the extension line L1 of the front surface 21a of the back plate 21 of the music stand 20. Therefore, even if the music stand 15 is long in the vertical direction, the top plate 12 does not get in the way, and it can be held stably.

[0036] Furthermore, in the primary use position, the lower end of the music stand 20 protrudes further forward than the upper end, allowing the music stand 15 to be placed at an appropriate angle. Thus, in order to hold the music stand 20 at an appropriate angle in the primary use position, it is desirable that the support mechanisms SL and SR connect a position on the front plate 16 that is closer to the upper end than the lower end with a position on the music stand 20 that is closer to the upper end than the lower end.

[0037] According to this embodiment, the support mechanisms SL and SR movably support the music stand 20 relative to the front plate 16 of the instrument body 101. In the support mechanisms SL and SR, the first rotating parts H1L and H1R connect the connecting pieces 31L and 31R to the front plate 16 so that they can rotate relative to each other, and the second rotating parts H2L and H2R connect the connecting pieces 31L and 31R to the music stand 20 so that they can rotate relative to each other. Since the music stand 20 and the front plate 16 are connected via two rotating parts, the first rotating part on the front plate 16 side and the second rotating part on the music stand 20 side, the music stand 20 can be positioned in an appropriate position closer to the performer than the front plate 16.

[0038] Furthermore, the pin 25 catches on the hooking part 68, stopping the music stand 20 in its primary position. In other words, the hooking part 68 acts as a movement restricting part that restricts the movement of the music stand 20 in its primary position, so that the music stand 20 can be stably maintained in an appropriate position when used in its primary position.

[0039] Furthermore, in the storage position (Figure 6), the rotation centers C1L, C1R of the first rotating parts H1L, H1R and the rotation centers C2L, C2R of the second rotating parts H2L, H2R are aligned vertically, so the back plate 21 of the music stand 20 can be placed between the decorative panels 13L, 13R. On the other hand, in the main usage position, the rotation centers C2L, C2R of the second rotating parts H2L, H2R are located further forward in the front-to-back direction than the rotation centers C1L, C1R of the first rotating parts H1L, H1R. Therefore, when in use, the music stand 20 can be extended forward significantly to bring the music, etc. 15 closer to the performer.

[0040] Furthermore, in the primary use position (Figure 7), when viewed from the left or right, the front end 12a of the top plate 12 coincides with or does not protrude from the extension line L1 of the front surface 21a of the back plate 21 of the music stand 20. Therefore, even music or other items 15 that are long in the vertical direction can be held stably.

[0041] Furthermore, since the pin 25 of the support rod 24 engages with the guide groove 67, the position of the music stand 20 can be smoothly adjusted. In addition, the guide section 60 and the support rod 24 are provided as a pair in the center of the instrument body 101 in the left-right direction (Figure 3). This also allows for smooth adjustment of the position of the music stand 20.

[0042] Although the present invention has been described in detail above based on its preferred embodiments, the present invention is not limited to these specific embodiments, and various forms that do not depart from the spirit of the invention are also included in the present invention. For example, the following modifications may be adopted.

[0043] First, the first rotating parts H1L, H1R and the second rotating parts H2L, H2R were fixed to the front plate 16 and the music stand 20 via mounting pieces 41L, 41R, respectively. However, these rotating parts may also be fixed directly to the front plate 16 and the music stand 20. In that case, the rotating parts H1L, H1R, H2L, H2R and connecting pieces 31L, 31R constitute the support mechanisms SL and SR.

[0044] The support mechanisms SL and SR have two rotating parts, one on the front plate 16 side and one on the music stand 20 side, but they may have three or more rotating parts. That is, the front plate 16 and the music stand 20 may be connected via three or more rotating parts. For example, taking the connecting piece 31L as an example, the part corresponding to the connecting piece 31L may be formed by connecting two pieces with a third rotating part. In this way, even when the pin 25 is caught on the hooking part 68, the posture (tilt angle) of the music stand 20 can be selected in a variety of ways. In this configuration, in order to ensure that the amount the music stand 20 extends forward in the main usage position is sufficient, the longest distance L2 that can be taken between the pivot center of the rotating part on the front plate 16 side and the pivot center of the rotating part on the music stand 20 side should be longer than the thickness B1 of the music stand 20.

[0045] Furthermore, the rotating parts H1L, H1R, H2L, and H2R may be configured to include torque hinge parts. That is, each rotating part may be given a torque hinge function that generates a resistance force against the force that rotates the connecting pieces 31L and 31R relative to the front plate 16 or the music stand 20. In particular, by appropriately setting the magnitude of the resistance force, the movement of the music stand 20 can be restricted at any position and orientation, and the position in which the music stand 20 remains stopped can be used as the music stand. In other words, even when the pin 25 is not in position at the hooking part 68, it is possible to place music or the like 15 on the music stand 20 and use it.

[0046] Furthermore, by increasing the magnitude of the above-mentioned resistance force and setting it appropriately, it becomes possible to maintain the music stand 20 in any position and orientation without providing the guide section 60 and the support rod 24, allowing for a wider variety of positions and orientations to be selected for the music stand 20. From this perspective, the torque hinge section plays the role of a movement restricting section that restricts the movement of the music stand 20 at the position of use.

[0047] As another example of a movement restricting mechanism when there is no torque hinge, for example, instead of the hooking mechanism 68, a support column that can be raised or lowered may be provided on the front plate 16 or the music stand 20, and the music stand 20 may be supported by the support column relative to the front plate 16.

[0048] In this embodiment, two support mechanisms, SL and SR, are provided, but there may be one support mechanism or three or more.

[0049] Furthermore, the musical instrument 100 to which the present invention applies is not limited to pianos or keyboard instruments. Nor is it limited to electronic instruments. [Explanation of Symbols]

[0050] 16 Front plate, 20 Music stand, 31L, 31R Connecting piece, 100 Instrument, 101 Instrument body, SL, SR Support mechanism, H1L, H1R First rotating part, H2L, H2R Second rotating part

Claims

1. Music stand and, It has a support mechanism that movably supports the music stand relative to the front plate of the instrument body, The aforementioned support mechanism is A connecting part for connecting the music stand and the instrument body, A first rotating part connects the aforementioned connecting part and the aforementioned front plate so that they can rotate relative to each other, A second rotating part connects the aforementioned connecting part and the music stand so that they can rotate relative to each other, It has, The position of the pivot center of the second rotating part is fixed to the music stand, forming a music stand support structure for a musical instrument.

2. The music stand is movable to at least a first position, which is the initial position, and a second position, which is primarily used as a music stand, by the relative rotation of the front plate and the connecting portion with respect to the music stand. The musical instrument music stand support structure according to claim 1, further comprising a movement restricting portion that restricts the movement of the music stand at the second position.

3. The musical instrument music stand support structure according to claim 2, wherein in the first position, the pivot center of the first rotating part and the pivot center of the second rotating part are aligned in the vertical direction, and in the second position, the pivot center of the second rotating part is located further forward in the front-to-back direction than the pivot center of the first rotating part.

4. The musical instrument music stand support structure according to claim 2 or 3, wherein, when viewed from the left or right direction, the front end of the top plate of the instrument body coincides with or does not protrude from the extension line of the front surface of the music stand at the second position.

5. In addition to the aforementioned support mechanism, A guide section having a guide groove and fixed to the instrument body, The device further comprises a support rod, one end of which is fixed to the music stand and the other end of which engages with the guide groove, The music stand support structure for a musical instrument according to any one of claims 1 to 4, wherein the position of the music stand changes as the other end of the support rod moves along the guide groove.

6. The aforementioned movement control unit is, A guide section having a guide groove and fixed to the instrument body, The music stand includes a support rod, one end of which is fixed to the music stand and the other end of which engages with the guide groove, A hooking portion is provided in the middle of the guide groove, The other end of the support rod catches on the hook, thereby restricting the movement of the music stand at the second position, as described in any one of claims 2 to 4.

7. The music stand support structure for a musical instrument according to claim 5 or 6, wherein the guide portion and the support rod are provided as a pair in the center of the instrument body in the left-right direction.

8. The music stand support structure for a musical instrument according to any one of claims 1 to 7, wherein the maximum distance that can be taken between the pivot center of the first rotating part and the pivot center of the second rotating part is longer than the thickness of the music stand.

9. The support mechanism connects a position on the front plate that is closer to the upper end than the lower end to a position on the music stand that is closer to the upper end than the lower end, according to any one of claims 1 to 8.

10. The music stand support structure for a musical instrument according to any one of claims 1 to 9, wherein the first rotating part and the second rotating part include a torque hinge part.

11. The first rotating part and the second rotating part include a torque hinge part. The music stand is movable to at least a first position, which is the initial position, and a second position, which is primarily used as a music stand, by the relative rotation of the front plate and the connecting portion with respect to the music stand. The musical instrument music stand support structure according to claim 1, wherein the first rotating part and the second rotating part generate a resistance force against a force that causes the connecting part to rotate relative to the front plate and the music stand, thereby restricting the movement of the music stand at the second position.

12. A musical instrument comprising a music stand support structure for a musical instrument as described in any one of claims 1 to 11.

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