Foldable electric piano

Abstract

The utility model discloses a foldable electric piano, which relates to the technical field of electric pianos and comprises a main body and a key module, the key module is positioned in the main body and is rotatably connected with the main body through a movable shaft, and folding shafts extending into the main body are fixed on two sides of the key module. The folding shaft is locked through the fastening wheels, when the key module is not used, the two sets of fastening wheels are manually unscrewed at the moment, then the key module is driven to rotate and be folded by 90 degrees along the movable shaft, the key module is rotated to the vertical angle from the horizontal angle, and the key module is folded and stored in the main body. Meanwhile, the folding shaft is locked relative to the main body again through the fastening wheel, so that the folded key sub-module is kept stable, the key sub-module is folded when not in use, the key sub-module does not occupy a large space volume, the problem that the key sub-module is damaged due to accidental impact of an external object can be avoided, the use effect is good, and the service life of the key sub-module is prolonged. And meanwhile, the service life of the key submodule is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric pianos, in particular to a foldable electric piano. Background Art

[0002] The electric piano is mainly composed of a keyboard, a touch system, a sound source system, speakers, a control panel and pedals. The keyboard has white keys and black keys, and its material and feel are crucial to the playing experience. The touch system is used to detect the strength and speed of the keys and convert them into electronic signals. The sound source system is the key to sound production. In the early days, it was an analog circuit, but now digital sampling or physical modeling technology is mostly used. The speakers play sound, and their quality and power affect the sound effect. There are usually three pedals, and their functions are similar to those of traditional piano pedals, which play a role in volume control, sustain, etc. These structural parts work together to realize the playing function and sound performance of the electric piano.

[0003] Existing digital pianos generally do not have a folding function, which means that when the digital piano is not in use, its overall volume cannot be effectively reduced, thus occupying a large space. The key part of the digital piano is in an exposed state when not in use. Even if the key part is protected by a protective cover, if the external impact is strong, this part is also very susceptible to accidental impact from external objects and may be damaged. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a foldable electric piano to solve the technical problem that the electric piano in the prior art does not have a folding function and the key part of the electric piano not only takes up space but also may be accidentally hit by external objects and damaged when not in use.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a foldable electric piano, comprising a main body and a key submodule, wherein the key submodule is located inside the main body and is rotatably connected thereto via a movable shaft, and movable holes are provided on both sides of the main body to cooperate with the movable shaft;

[0006] Both sides of the key module are fixed with folding shafts extending into the interior of the main body. The outer sides of the two sets of folding shafts are fixed with connecting bolts that pass through the main body. The interior of the fastening wheel is provided with internal threads that match the connecting bolts. Both sides of the main body are provided with arc-shaped grooves, and the inner ends of the arc-shaped grooves are slidably connected to the folding shafts. The cross-section of the folding shafts is "T"-shaped.

[0007] The outer sides of the two groups of connecting bolts are both threadedly connected to fastening wheels, the bottom end of the interior of the main body is slidably connected to a protection plate, both sides of the protection plate are fixed with damping sliders extending into the interior of the main body, and both sides of the interior of the main body are provided with damping grooves that cooperate with the damping sliders;

[0008] The two groups of folding shafts are elastically connected to two groups of elastic heads, and the two groups of elastic heads and the folding shafts are elastically connected via springs;

[0009] A first positioning hole and a second positioning hole are provided inside the arc groove on both sides of the main body. The first positioning hole and the second positioning hole are matched with the elastic head, and the first positioning hole and the second positioning hole are in different directions.

[0010] By adopting the above technical solution, the folding axis is locked by the fastening wheel, and then the user can play through the key sub-module. When not in use, the two sets of fastening wheels are manually loosened, and then the key sub-module is driven to rotate and fold ninety degrees along the movable axis, from a horizontal angle to a vertical angle, so that the key sub-module is folded and stored inside the main body. At the same time, the folding axis is locked relative to the main body again by the fastening wheel, so that the folded key sub-module remains stable. As can be seen from the above, the key sub-module is folded when not in use, which not only does not take up a large space volume, but also avoids the problem of damage to the key sub-module caused by accidental impact of external objects. The use effect is better and the service life of the key sub-module is increased at the same time.

[0011] Furthermore, a rubber ring is fixed on the inner side of the fastening wheel.

[0012] By adopting the above technical solution, when the fastening wheel is tightened and squeezed on the side of the main body, the rubber ring increases the friction between the rubber ring and the main body, thereby improving the overall stability.

[0013] Furthermore, the ends of the connecting bolts are all fixed with a blocking ring extending into the interior of the fastening wheel, and a matching groove that matches the blocking ring is opened on one side of the interior of the fastening wheel.

[0014] By adopting the above technical solution, the shielding ring plays a role in shielding the external thread of the connecting bolt, preventing external impurities from entering the thread groove and affecting its use. At the same time, when the fastening wheel is rotated, the shielding ring can passively extend into the matching groove and will not affect the rotation of the fastening wheel.

[0015] To sum up, the present invention mainly has the following beneficial effects: the present invention locks the folding axis through the fastening wheel, and then the user can play through the key sub-module. When not in use, the two sets of fastening wheels are manually loosened, and then the key sub-module is driven to rotate and fold ninety degrees along the movable axis, from a horizontal angle to a vertical angle, so that the key sub-module is folded and stored inside the main body. At the same time, the folding axis is locked relative to the main body again by the fastening wheel, so that the folded key sub-module remains stable. As can be seen from the above, the key sub-module is folded when not in use, which not only does not take up a large space volume, but also avoids the problem of damage to the key sub-module caused by accidental impact of external objects. The use effect is better and the service life of the key sub-module is increased at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model in an expanded state;

[0017] Figure 2 For this utility model Figure 1 A magnified view of point A;

[0018] Figure 3 This is a schematic structural diagram of the key submodule of the utility model;

[0019] Figure 4 This is an enlarged sectional view of the local structure of the utility model;

[0020] Figure 5 This is an enlarged cross-sectional view of the local structure of the utility model;

[0021] Figure 6 This is an enlarged view of the structure of the protection plate of the utility model;

[0022] Figure 7 It is a partial structural diagram of the main body of the utility model;

[0023] Figure 8 For this utility model Figure 7 Enlarged view of point B;

[0024] Figure 9 It is a structural schematic diagram of the utility model in a folded state.

[0025] In the figure: 1. Main body; 2. Key module; 3. Movable shaft; 4. Folding shaft; 5. Connecting bolt; 6. Fastening wheel; 7. Internal thread; 8. Rubber ring; 9. Shielding ring; 10. Matching groove; 11. Elastic head; 12. Spring; 13. Arc groove; 14. First positioning hole; 15. Second positioning hole; 16. Movable hole; 17. Protective plate; 18. Damping slider; 19. Damping slide groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] The following describes an embodiment of the present invention based on its overall structure.

[0028] A foldable electric piano, such as Figure 1-9As shown, it includes a main body 1 and a key submodule 2. The key submodule 2 is located inside the main body 1 and is rotatably connected to the main body 1 through a movable shaft 3. Active holes 16 that cooperate with the movable shaft 3 are opened on both sides of the main body 1.

[0029] Folding shafts 4 extending into the interior of the main body 1 are fixed on both sides of the key module 2. Connecting bolts 5 penetrating the main body 1 are fixed to the outside of both sets of folding shafts 4. Internal threads 7 are provided inside the fastening wheel 6 to match the connecting bolts 5. Arc grooves 13 are provided on both sides of the main body 1, and the inner ends of the arc grooves 13 are slidably connected to the folding shafts 4. The cross-section of the folding shafts 4 is "T"-shaped.

[0030] When not in use, the two sets of fastening wheels 6 are manually loosened, and then the key submodule 2 is driven to rotate and fold 90 degrees along the movable axis 3, from a horizontal angle to a vertical angle, so that the key submodule 2 is folded and stored inside the main body 1. At the same time, the folding axis 4 is locked relative to the main body 1 again by the fastening wheels 6, so that the folded key submodule 2 remains stable;

[0031] As can be seen from the above, the key submodule 2 is folded when not in use, which not only does not occupy a large space volume, but also avoids the problem of damage to the key submodule 2 caused by accidental impact of external objects, has a good use effect, and at the same time increases the service life of the key submodule 2;

[0032] The outer sides of the two sets of connecting bolts 5 are both threadedly connected to the fastening wheels 6. A protective plate 17 is slidably connected to the bottom end of the main body 1. Damping sliders 18 extending into the interior of the main body 1 are fixed on both sides of the protective plate 17. Damping slides 18 are also provided on both sides of the main body 1 to cooperate with the damping sliders 18.

[0033] Two sets of elastic heads 11 are elastically connected inside the two sets of folding shafts 4, and the two sets of elastic heads 11 and the folding shafts 4 are elastically connected via springs 12;

[0034] A first positioning hole 14 and a second positioning hole 15 are formed inside the arc groove 13 on both sides of the main body 1 , and both the first positioning hole 14 and the second positioning hole 15 match the elastic head 11 , and the first positioning hole 14 and the second positioning hole 15 face different directions.

[0035] See also Figure 4 and Figure 5 A rubber ring 8 is fixed on the inner side of the fastening wheel 6. By setting the above structure, the utility model increases the friction between the rubber ring 8 and the main body 1 when the fastening wheel 6 is tightened and squeezed on the side of the main body 1, thereby improving the overall stability.

[0036] See also Figure 4 and Figure 5The ends of the connecting bolts 5 are fixed with a shielding ring 9 extending to the inside of the fastening wheel 6, and a matching groove 10 that matches the shielding ring 9 is opened on one side of the inside of the fastening wheel 6. The utility model sets the above structure, in which the shielding ring 9 plays a shielding role on the external thread of the connecting bolt 5, preventing external impurities from entering the thread groove and affecting its use. At the same time, when the fastening wheel 6 is rotated, the shielding ring 9 can passively extend into the matching groove 10 without affecting the rotation of the fastening wheel 6.

[0037] The working principle of the utility model is as follows: when in use, the key submodule 2 is connected to an external power supply device through a power line, thereby providing power to the key submodule 2. An adjustment button is provided on the top of the key submodule 2, which can change the playing mode of the key submodule 2 to provide richness of playing;

[0038] The folding shaft 4 is locked by the fastening wheel 6, and the user can then play the keyboard through the key submodule 2. The fastening wheel 6 and the connecting bolt 5 are threadedly connected by an internal thread 7, and a rubber ring 8 is fixed on the inside of the fastening wheel 6. When the fastening wheel 6 is tightened and squeezed against the side of the main body 1, the rubber ring 8 increases the friction between the main body 1 and improves the overall stability.

[0039] When not in use, the two sets of fastening wheels 6 are manually loosened, and then the key submodule 2 is driven to rotate and fold 90 degrees along the movable axis 3, from a horizontal angle to a vertical angle, so that the key submodule 2 is folded and stored inside the main body 1. At the same time, the folding axis 4 is locked relative to the main body 1 again by the fastening wheels 6, so that the folded key submodule 2 remains stable;

[0040] As can be seen from the above, the key submodule 2 is folded when not in use, which not only does not occupy a large space volume, but also avoids the problem of damage to the key submodule 2 caused by accidental impact of external objects, has a good use effect, and at the same time increases the service life of the key submodule 2;

[0041] Furthermore, two sets of elastic heads 11 are elastically provided inside the folding shaft 4, wherein the elastic heads 11 can penetrate into the positioning hole for pre-support under the action of the spring 12;

[0042] Specifically, when the key submodule 2 is in a horizontally unfolded state, the two sets of elastic heads 11 are inserted into the two sets of first positioning holes 14; when the key submodule 2 is in a vertically folded state, the two sets of elastic heads 11 are inserted into the two sets of second positioning holes 15;

[0043] As can be seen from the above, when the key submodule 2 is rotated from the unfolded state to the folded state, the two sets of elastic heads 11 are disengaged from the first positioning holes 14 and then inserted into the second positioning holes 15 for pre-positioning support. At this time, the user can tighten the two sets of fastening wheels 6 again in turn. Similarly, when the key submodule 2 is rotated from the folded state to the unfolded state, the two sets of elastic heads 11 are disengaged from the second positioning holes 15 and then inserted into the first positioning holes 14 for pre-positioning support. At this time, the user can similarly tighten the two sets of fastening wheels 6 again in turn, making the overall fastening operation more convenient and easier to use.

[0044] Finally, when the key submodule 2 is folded, the protective plate 17 is manually pushed to slide the protective plate 17 from bottom to top, so that the protective plate 17 slides to the outside of the key submodule 2 to protect the key submodule 2;

[0045] Specifically, the two sides of the protection plate 17 and the main body 1 are slidably connected by two sets of damping sliders 18. With the cooperation of the damping slide grooves 19, the protection plate 17 can remain stable at any position when not subjected to external force, and will not slide and fall due to its own gravity, thereby improving the protection effect of the key sub-module 2.

[0046] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A foldable electric piano, comprising a main body (1) and a key submodule (2), characterized in that: The key submodule (2) is located inside the main body (1) and is rotatably connected thereto via a movable shaft (3), and movable holes (16) matching the movable shaft (3) are provided on both sides of the main body (1); Both sides of the key submodule (2) are fixed with folding shafts (4) extending into the interior of the main body (1), the outer sides of the two groups of folding shafts (4) are fixed with connecting bolts (5) penetrating the main body (1), the outer sides of the two groups of connecting bolts (5) are threadedly connected with fastening wheels (6), the bottom end of the interior of the main body (1) is slidably connected with a protective plate (17), the interior of the two groups of folding shafts (4) are elastically connected with two groups of elastic heads (11), and the two groups of elastic heads (11) and the folding shafts (4) are elastically connected via springs (12).

2. The foldable digital piano according to claim 1, characterized in that: Arc grooves (13) are provided on both sides of the main body (1), and the inner ends of the arc grooves (13) are slidably connected to the folding shaft (4), and the cross section of the folding shaft (4) is "T"-shaped.

3. The foldable digital piano according to claim 2, characterized in that: A first positioning hole (14) and a second positioning hole (15) are provided on both sides of the interior of the main body (1), and are located inside the arc-shaped groove (13). The first positioning hole (14) and the second positioning hole (15) are both matched with the elastic head (11), and the first positioning hole (14) and the second positioning hole (15) are oriented in different directions.

4. The foldable digital piano according to claim 1, wherein: The interior of the fastening wheel (6) is provided with an internal thread (7) that matches the connecting bolt (5), and a rubber ring (8) is fixed on the inner side of the fastening wheel (6).

5. The foldable digital piano according to claim 1, wherein: The ends of the connecting bolts (5) are fixed with shielding rings (9) extending into the interior of the fastening wheel (6), and a matching groove (10) matching with the shielding ring (9) is provided on one side of the interior of the fastening wheel (6).

6. The foldable digital piano according to claim 1, wherein: Damping sliders (18) extending into the interior of the main body (1) are fixed on both sides of the protection plate (17), and damping sliding grooves (19) matching the damping sliders (18) are provided on both sides of the interior of the main body (1).

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