A height-adjustable music stand

Abstract

This utility model relates to the field of piano auxiliary tools technology, and discloses a height-adjustable music stand, including a back plate. A hanging piece that mates with the upper edge of the music stand is mounted on the rear surface of the back plate, and a movable tray is mounted on the front surface of the back plate. The two sides of the movable tray are slidably locked to the two sides of the back plate. A ratchet is provided at the center of the side edge of the back plate. The movable tray slides and engages with the ratchet by a latch on the movable tray, allowing for height adjustment and locking along the length of the ratchet. This device allows for height adjustment by manually operating the latch, and has a wide adjustment range to meet the needs of users of different heights, from children to adults, while ensuring the stability of the music stand.

Description

Technical Field

[0001] This utility model relates to the field of piano auxiliary tools technology, and particularly to the field of piano music stands, specifically a height-adjustable piano music stand. Background Technology

[0002] Currently, in the field of piano performance and teaching, the music stand is a core auxiliary device used to hold sheet music and assist performers in reading the score. Its structural rationality directly affects the performer's posture and playing experience. In existing technology, commercially available piano music stands generally adopt a fixed height design and lack the function of adjusting the viewing angle, which has significant technical defects. For children who receive piano lessons from a young age, the fixed height of music stands is unsuitable for their growing bodies due to their rapid growth spurt. As children grow taller, their cervical spine must maintain an unnatural forward-leaning or offset position for extended periods to accurately read the music, leading to a continuous increase in pressure on the cervical spine with age. This problem extends beyond children; for adult pianists as well, fixed-height and fixed-angle music stands are equally unsuitable for varying heights and postures. Prolonged use can easily lead to cervical muscle strain, increasing the risk of occupational diseases such as cervical spondylosis and frozen shoulder, seriously impacting the performer's health and long-term career. Market research and existing technology searches reveal that, to date, the global piano auxiliary equipment market lacks piano music stands that can adjust for different reading postures and accommodate people of varying heights. Existing fixed-structure piano music stands can no longer meet performers' demands for technological upgrades that prioritize health and comfort. There is an urgent need to propose an improved piano music stand technology solution that can address these technical issues. Summary of the Invention

[0003] To address the problem of the non-adjustable height of music stands used for holding sheet music in pianos, this invention provides a height-adjustable music stand.

[0004] This utility model is achieved using the following technical solution: A height-adjustable music stand includes a back plate, a hanging piece that mates with the upper edge of the music stand on the rear surface of the back plate, and a movable tray on the front surface of the back plate. The two sides of the movable tray are slidably engaged with the two sides of the back plate. A ratchet is provided at the center of the side edge of the back plate. The movable tray is slidably engaged with the side edge of the back plate, and the height of the movable tray can be adjusted and locked along the length of the ratchet by engaging or disengaging with a latch on the movable tray.

[0005] During implementation, the back panel is provided with mutually perpendicular reinforcing ribs on its rear surface to enhance the structural rigidity and bending resistance of the back panel itself and prevent deformation of the back panel.

[0006] The back surface of the back panel is fitted with a hanger that mates with the upper edge of the music stand. The hanger includes a hanging plate that snaps onto the back surface of the back panel, enabling a movable connection between the hanger, the back panel, and the hook. The hanging plate has a hook that mates with the upper edge of the music stand, allowing direct hooking onto the piano music stand, providing a wide range of fit. The back panel has corner braces that are fixed to the hooks, providing a rigid connection between the back panel and the hooks, distributing the overall weight, and enhancing the connection strength. The back surface of the back panel has a pair of oppositely arranged slots. The two sides of the hanging plate are snapped into the slots. The two sides of the hanging plate have notches for entering the slots. The notches are adapted to the shape and size of the slot openings to guide the hanging plate into the slots for sliding and quick assembly / disassembly. Above the two slots on the back surface of the back panel, there is a fixed limiting groove. The inner wall of the limiting groove abuts against the upper surface of the hanging plate, restricting the upward displacement of the hanging plate on the back panel and constraining the hanger in three directions (up, left, and right) to prevent the hanging plate from falling off the back panel during use.

[0007] The front surface of the back plate is equipped with a movable support plate, which includes a support plate upright plate. The bottom of the support plate upright plate is fixed with a support plate base plate for carrying the sheet music. The support plate base plate has a horizontally extending structure and directly supports the weight of the bottom of the sheet music. The edge of the support plate base plate is provided with a flange to restrict the sliding of the sheet music. The edge of the support plate upright plate is provided with a support plate side plate. The two sides of the movable support plate and the two sides of the back plate can be locked and slidably engaged.

[0008] A ratchet is provided in the center of the side edge of the back plate. The ratchet is located in the center of the side edge of the back plate, and the tooth tip is lower than the side surface. This prevents the ratchet tooth tip from protruding from the side surface of the back plate, prevents mechanical interference between the side plate and the tooth tip when the moving pallet slides, and reduces wear on the tooth tip caused by collision, thus extending the service life of the ratchet. A limiting protrusion is provided at the bottom of the side edge of the back plate to prevent the moving pallet from slipping off completely from the bottom of the back plate.

[0009] The movable pallet is slidably engaged with the side of the back plate, and the height of the movable pallet can be adjusted and locked along the length of the ratchet by engaging or disengaging with the latches on the movable pallet; specifically, the side plate of the pallet wraps around the side edge of the pallet upright plate, and the side plate of the pallet is provided with a latch.

[0010] The latch includes an integrated operating end and a locking end. The operating end and the locking end are rotatably mounted on the side of the tray via a rotating shaft. A return torsion spring is sleeved on the outside of the rotating shaft. One end of the return torsion spring abuts against the moving tray, and the other end abuts against the operating end of the latch. The locking end engages in the tooth groove of the ratchet rack.

[0011] Furthermore, guide wheels are rotatably installed between the folded edge of the pallet side plate and the pallet upright plate. There are at least two guide wheels, which are distributed at intervals at the upper and lower ends of the latch along the height direction of the pallet upright plate. The wheel surface of the guide wheel abuts against the side surface of the back plate, assisting in moving the pallet to slide along the side of the back plate.

[0012] In use, align the hanger on the back surface of the back plate with the upper edge of the music stand, press the operating end of the movable latch to disengage the latch from the groove of the ratchet rack, at which point the movable tray is unlocked and can slide along the side of the back plate. The height of the movable tray can be adjusted by sliding it up and down. During movement, the guide wheel on the inner side of the tray rolls against the side surface of the back plate, assisting the tray to slide smoothly and avoid jamming. Release the press on the operating end of the latch, the reset torsion spring rebounds, and drives the latch to reset around the pivot, so that the locking end re-engages into the groove of the ratchet rack at the current position, completing the height locking of the movable tray.

[0013] When you need to carry this device, press the operating end of the movable lock to remove the movable tray from the back plate. Lay the back plate flat and push the hook to move the hanging plate synchronously. The upper surface of the hanging plate will separate from the inner wall of the limiting groove on the rear surface of the back plate, releasing the constraint of the limiting groove on the upper end of the hanging plate. Continue to slide the hanging plate, and the locking parts on both sides of the hanging plate will slide out along the locking groove until the locking notch and the locking groove coincide. Remove the hanging plate together with the hook to completely disassemble the device for easy carrying.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This utility model provides a height-adjustable music stand. Through the cooperation of a latch and a ratchet rack, the movable tray has numerous adjustment levels, precisely matching the player's subtle needs for music score height, achieving fine-tuned height adjustment. The locking effect is excellent, ensuring the stability of the music score support. Users can adjust the height manually without additional tools, and the wide adjustment range caters to users of different heights, from children to adults, further enhancing the device's practicality and applicability. It effectively solves the problem of existing fixed-height music stands being unable to accommodate people of different heights, preventing continuous stress on the cervical spine caused by prolonged head tilting or bending while reading music. It provides good protection for the learner's and user's posture, helping players maintain a natural and healthy body posture during long performances or practice. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing the front and side views of the present invention.

[0016] Figure 2 This is a schematic diagram of the rear side view of the present invention.

[0017] Figure 3This diagram illustrates the installation of the hanging component in this utility model.

[0018] Figure 4 This diagram illustrates the installation of the latch in this invention.

[0019] Figure 5 This is an exploded view of the latch in this utility model.

[0020] Figure 6 This diagram illustrates the installation of the ratchet rack in this invention.

[0021] Figure 7 This is a schematic diagram showing the structure of the card slot and the limiting stop slot in this utility model.

[0022] In the diagram: 1. Back plate; 2. Slot; 3. Ratchet; 4. Guide wheel; 5. Moving pallet; 501. Pallet upright plate; 502. Pallet bottom plate; 503. Pallet side plate; 5031. Folded edge; 6. Lock; 601. Operating end; 602. Engaging end; 603. Rotating shaft; 604. Reset torsion spring; 7. Angle brace; 8. Reinforcing rib; 9. Hanging plate; 10. Hook; 11. Limiting groove; 12. Notch. Detailed Implementation

[0023] The specific embodiments of this utility model will now be described with reference to the accompanying drawings.

[0024] A height-adjustable music stand, such as Figures 1-7 As shown: It includes a back plate 1, and the rear surface of the back plate 1 is provided with mutually perpendicular reinforcing ribs 8.

[0025] The back surface of the back plate 1 is equipped with a hanger that mates with the upper edge of the spectrometer. The hanger includes a hanging plate 9 that is snapped onto the back surface of the back plate 1, enabling the hanger to be movably connected to the back plate 1 and the hook 10. The hanging plate 9 is fixed with a hook 10 that mates with the upper edge of the spectrometer. The back plate 1 is provided with corner braces 7 that are fixed to the hook 10. The corner braces 7 are grid-shaped and rigidly connect the back plate 1 and the hook 10. The back surface of the back plate 1 is provided with a pair of oppositely arranged slots 2. The two sides of the hanging plate 9 are snapped into the slots 2. The two sides of the hanging plate 9 are provided with notches 12 for entering the slots 2. The notches 12 are adapted to the shape and size of the slots 2. The back surface of the back plate 1 is fixed above the two slots 2 with a limiting groove 11. The inner wall of the limiting groove 11 abuts and engages with the upper end face of the hanging plate 9. The limiting groove 11 restricts the upward displacement of the hanging plate 9 on the back plate 1 and constrains the hanger in the three directions of up, left, and right to prevent the hanging plate 9 from falling off the back plate 1 during use.

[0026] A movable support plate 5 is installed on the front surface of the back plate 1. The movable support plate 5 includes a support plate upright plate 501. A support plate base plate 502 for carrying the sheet music is fixed to the bottom of the support plate upright plate 501. The support plate base plate 502 has a horizontally extending structure and directly supports the bottom weight of the sheet music. The edge of the support plate base plate 502 is provided with a flange to restrict the sliding of the sheet music. The edge of the support plate upright plate 501 is provided with a support plate side plate 503. The two sides of the movable support plate 5 are locked and slidably engaged with the two sides of the back plate 1.

[0027] A ratchet 3 is provided in the center of the side edge of the back plate 1. In this embodiment, the ratchet 3 is integrally formed with the back plate 1. The ratchet 3 is located in the center of the side edge of the back plate 1, and the tooth tip is lower than the side surface to reduce the wear of the tooth tip caused by collision. That is, the ratchet 3 can be formed by engraving. A limiting protrusion is provided at the bottom of the side edge of the back plate 1 to prevent the movable tray 5 from slipping off, so as to avoid the movable tray 5 from completely slipping off the bottom of the back plate 1.

[0028] The movable pallet 5 is slidably engaged with the side of the back plate 1, and is engaged or disengaged with the ratchet 3 by the latch 6 provided on the movable pallet 5, so as to realize the height adjustment and locking of the movable pallet 5 along the length direction of the ratchet 3; specifically, the pallet side plate 503 wraps around the side edge of the pallet upright plate 501, and the pallet side plate 503 is provided with the latch 6.

[0029] The latch 6 includes an integrally formed operating end 601 and a locking end 602. The operating end 601 and the locking end 602 are rotatably mounted on the side of the tray via a rotating shaft 603. In this embodiment, a pair of rotating shaft 603 mounting protrusions are provided on the side plate 503 of the tray, and a through hole is opened between the two rotating shaft 603 mounting protrusions. The locking end 602 of the latch 6 cooperates with the ratchet 3. A return torsion spring 604 is sleeved on the outside of the rotating shaft 603. One end of the return torsion spring 604 abuts against the movable tray 5, and the other end abuts against the operating end 601 of the latch 6. The locking end 602 is engaged in the tooth groove of the ratchet 3.

[0030] Furthermore, a guide wheel 4 is rotatably installed between the folded edge 5031 of the pallet side plate 503 and the pallet upright plate 501. In this embodiment, there are four guide wheels 4, which are arranged in pairs at the upper and lower ends of the latch 6. The wheel surface of the guide wheel 4 abuts against the side surface of the back plate 1 to assist in moving the pallet 5 to slide along the side of the back plate 1.

[0031] In use, the hanger on the back surface of the back plate 1 is installed in conjunction with the upper edge of the music stand. Press the operating end 601 of the movable latch 6 to disengage the engaging end 602 of the latch 6 from the tooth groove of the ratchet 3. At this time, the movable support plate 5 is unlocked and can slide along the side of the back plate 1. The height of the movable support plate 5 can be adjusted by sliding it up and down. During the movement, the guide wheel 4 on the inner side of the support plate side plate 503 rolls against the side surface of the back plate 1 to assist the support plate to slide smoothly and avoid jamming. Release the press on the operating end 601 of the latch 6, and the reset torsion spring 604 returns, driving the latch 6 to reset around the rotating shaft 603, so that the engaging end 602 re-engages into the tooth groove of the ratchet 3 at the current position, thus completing the height locking of the movable support plate 5.

[0032] When this device needs to be carried, press the operating end 601 of the movable lock 6 to remove the movable tray 5 from the back plate 1, lay the back plate 1 flat, push the hook 10 to drive the hanging plate 9 to move synchronously, the upper end of the hanging plate 9 separates from the inner wall of the limiting groove 11 on the rear surface of the back plate 1, release the constraint of the limiting groove 11 on the upper end of the hanging plate 9, continue to slide the hanging plate 9, the locking parts on both sides of the hanging plate 9 slide out along the locking groove 2 until the locking notch 12 and the locking groove 2 overlap, remove the hanging plate 9 together with the hook 10, completely disassemble the device for easy carrying.

[0033] The scope of protection claimed by this utility model is not limited to the specific embodiments described above. Moreover, for those skilled in the art, this utility model can have various modifications and alterations. Any modifications, improvements, and equivalent substitutions made within the concept and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A height-adjustable music stand, comprising a back panel (1), characterized in that: The back plate (1) is equipped with a hanging piece that matches the upper edge of the spectrometer, and the front surface of the back plate (1) is equipped with a movable support plate (5). The two sides of the movable support plate (5) are slidably locked to the two sides of the back plate (1). The back plate (1) has a ratchet (3) at the center of its side edge. The movable tray (5) is slidably engaged with the side of the back plate (1). The movable tray (5) is engaged or disengaged from the ratchet (3) by a latch (6) on the movable tray (5), thereby achieving height adjustment and locking of the movable tray (5) along the length of the ratchet (3).

2. The height-adjustable music stand according to claim 1, characterized in that: The movable tray (5) includes a tray upright (501), a tray base plate (502) for carrying sheet music is fixed to the lower side of the tray upright (501), a tray side plate (503) is provided on the edge of the tray upright (501), the tray side plate (503) wraps around the side edge of the tray upright (501), and a latch (6) is provided on the tray side plate (503). The latch (6) includes an integrally set operating end (601) and a locking end (602). The operating end (601) and the locking end (602) are rotatably mounted on the side of the tray via a rotating shaft (603). A reset torsion spring (604) is sleeved on the outside of the rotating shaft (603). One end of the reset torsion spring (604) abuts against the movable tray (5), and the other end abuts against the operating end (601) of the latch (6). The locking end (602) is engaged in the tooth groove of the ratchet rack (3).

3. The height-adjustable music stand according to claim 2, characterized in that: A guide wheel (4) is rotatably installed between the folded edge (5031) of the pallet side plate (503) and the pallet upright plate (501). The wheel surface of the guide wheel (4) abuts against the side surface of the back plate (1) to assist the pallet (5) in sliding along the side of the back plate (1).

4. The height-adjustable music stand according to claim 3, characterized in that: At least two guide wheels (4) are provided, and the guide wheels (4) are distributed at intervals at the upper and lower ends of the latch (6) along the height direction of the support plate (501).

5. A height-adjustable music stand according to claim 2, characterized in that: The ratchet (3) is located at the center of the side of the back plate (1), and the tooth tip is lower than the side surface; the bottom of the side of the back plate (1) is provided with a limiting protrusion to prevent the movable support plate (5) from slipping.

6. The height-adjustable music stand according to claim 1, characterized in that: The hanging device includes a hanging plate (9) that is snapped onto the rear surface of the back plate (1), and a hook (10) that engages with the upper edge of the spectrometer is fixed on the hanging plate (9).

7. A height-adjustable music stand according to claim 6, characterized in that: The back plate (1) has a pair of opposite slots (2) on its rear surface. The two sides of the hanging plate (9) are fitted into the slots (2). The back surface of the back plate (1) is fixed above the two slots (2) with a limiting groove (11). The inner wall of the limiting groove (11) abuts against the upper surface of the hanging plate (9).

8. A height-adjustable music stand according to claim 6, characterized in that: The back plate (1) is provided with a corner brace (7) that is fixed to the hook (10).

9. A height-adjustable music stand according to claim 1, characterized in that: The back plate (1) has mutually perpendicular reinforcing ribs (8) on its rear surface.

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