Foldable and portable violoncello box
By designing a foldable cello case structure and dustproof mechanism, the problem of inconvenience caused by the inability to fold traditional cello cases has been solved, thus improving the portability and protection of the case.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 南昌职业大学
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional cello cases cannot be folded, resulting in them taking up a lot of space when not in use, making them inconvenient to carry and transport.
A foldable and portable cello case has been designed. The case can be folded and unfolded by the cooperation of guide strips and guide grooves between the body box and the body cover, and between the head box and the head cover. It is also equipped with a dustproof mechanism and a carrying strap structure to enhance the convenience of carrying and the protection performance.
It effectively reduces the space occupied by the instrument case when not in use, making it easy to carry and transport, while providing good dustproof and protective functions, thus improving the convenience and safety of users.
Smart Images

Figure CN224137889U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of musical instrument technology, and in particular to a foldable and portable cello case. Background Technology
[0002] A cello case is a container specifically designed to protect cellos. It is mainly used to provide reliable protection for cellos during transportation and storage. As a relatively expensive and intricately constructed musical instrument, the cello has high requirements for its storage and handling environment. The cello case has certain shockproof, moisture-proof, and pressure-resistant properties, which can effectively prevent the cello from being damaged by collisions, scratches, and changes in humidity.
[0003] Traditional cello cases consist of a sturdy outer shell made of wood or hard plastic, providing a basic protective framework for the cello. The interior is lined with soft foam or velvet to cushion and secure the cello, preventing it from shifting inside. They also feature handles and locks for easy carrying and to ensure the safety of the contents. However, in practice, the weight of a cello makes carrying it by hand tiring and inconvenient for long periods. Current technology adds shoulder straps to the case, allowing users to carry the cello on their back, reducing the fatigue. However, in practice, the fixed structure of the case prevents it from folding, resulting in a large space-consuming case when the cello is not in use, making it difficult to carry and transport. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a foldable and portable cello case, which aims to improve the problem that the existing case has a relatively fixed overall structure and cannot be folded, resulting in the case taking up a lot of space when the cello is not in use, which is not conducive to carrying and transportation.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a foldable and portable cello case, including a body box, a body cover rotatably connected to the top of the body box, a headstock box slidably connected to the right side of the inner wall of the body box, a headstock cover rotatably connected to the top of the headstock box, two guide strips fixedly connected to adjacent sides of the body box and the body cover, two guide grooves formed on opposite sides of the headstock box and the headstock cover, multiple guide strips slidably connected to corresponding guide grooves, and protective pads provided at the bottom of the inner walls of both the body box and the headstock box. Two hollow rods are fixedly connected to the top right side of the guitar body cover. Insert rods are slidably connected to the inner walls of both hollow rods. Limiting plates are fixedly connected to the middle of the outer walls of both insert rods. Springs are fixedly connected to the tops of both limiting plates. The tops of both springs are fixedly connected to the corresponding hollow rods. Two slots are opened on the top left side of the headstock cover. The two insert rods are slidably connected to the corresponding slots. A fixing component is provided on the outer wall of the guitar body box. A dustproof mechanism is provided at the bottom of the guitar body box to prevent impurities from entering the guitar body box.
[0006] As a further description of the above technical solution:
[0007] The dustproof mechanism includes a rotating rod, the outer wall of which is rotatably connected to the bottom right end of the piano body box. A dustproof plate is fixedly connected to the outer wall of the rotating rod. Magnets are fixedly connected to the upper and lower sides of the outer wall of the dustproof plate. A second magnet is fixedly connected to the right side of the outer wall of the piano body cover.
[0008] As a further description of the above technical solution:
[0009] The fixing component includes multiple hooks, the outer walls of which are respectively fixedly connected to the front side of the outer walls of the body cover and the headstock cover. Multiple latches are fixedly connected to the front side of the outer walls of the body cover and the headstock cover, and the multiple hooks are respectively engaged with the corresponding latches.
[0010] As a further description of the above technical solution:
[0011] The bottom of the instrument case is fixedly connected to the front and back sides with shoulder straps, and the outer walls of the two shoulder straps are provided with adjustment buckles.
[0012] As a further description of the above technical solution:
[0013] A handle is fixedly connected to the front side of the outer wall of the instrument body box, and the surface of the handle is treated with anti-slip treatment.
[0014] As a further description of the above technical solution:
[0015] Both of the two insertion rods are fixedly connected to the same connecting handle at their tops, and the outer walls of the connecting handle are rounded around all sides.
[0016] As a further description of the above technical solution:
[0017] A nameplate is fixedly connected to the top of the outer wall of the instrument body cover, and the surface of the nameplate is treated with wear resistance.
[0018] As a further description of the above technical solution:
[0019] A soft pad is fixedly connected to the bottom of the instrument box, and the surface of the soft pad has multiple ventilation holes.
[0020] This utility model has the following beneficial effects:
[0021] 1. In this utility model, the guide strips of the body box and the body cover, and the guide grooves of the headstock box and the headstock cover cooperate with each other, so that the user can easily push the headstock box to slide along the guide strips in the guide grooves, thereby realizing the folding and unfolding of the case in the length direction. This effectively solves the problem that the case cannot be folded due to its fixed overall structure, which results in a large space occupation when not in use and is not conducive to carrying and transportation.
[0022] 2. In this utility model, the rotating rod and the rotating connection structure at the bottom of the cello body provide a rotating basis for the dustproof plate, allowing it to flexibly change position. Combined with the adsorption cooperation between the magnet on the dustproof plate and the magnet on the bottom of the cello body and the magnet on the right side of the outer wall of the cello body cover, an effective dustproof function is achieved, protecting the cello from dust and improving the protective performance of the cello case. Attached Figure Description
[0023] Figure 1 This is a perspective view of the foldable and portable cello case proposed in this utility model.
[0024] Figure 2 This is a front view of the foldable and portable cello case proposed in this utility model.
[0025] Figure 3 This is a partial structural diagram of the foldable and portable cello case proposed in this utility model.
[0026] Figure 4 This is a partial structural exploded view of the foldable and portable cello case proposed in this utility model.
[0027] Figure 5 This is a schematic diagram of the dustproof mechanism of the foldable and portable cello case proposed in this utility model.
[0028] Figure 6 A schematic diagram of the insertion rod of the foldable and portable cello case proposed in this utility model;
[0029] Figure 7 This is a schematic diagram of the ventilation holes in the foldable and portable cello case proposed in this utility model.
[0030] Legend:
[0031] 1. Body box; 2. Dustproof mechanism; 201. Rotating rod; 202. Dustproof plate; 203. Magnet one; 204. Magnet two; 3. Body cover; 4. Headstock box; 5. Headstock cover; 6. Guide bar; 7. Guide groove; 8. Protective pad; 9. Hollow rod; 10. Insert rod; 11. Limiting plate; 12. Spring; 13. Slot; 14. Hook; 15. Buckle; 16. Strap; 17. Adjustment buckle; 18. Handlebar; 19. Connecting handle; 20. Nameplate; 21. Soft pad; 22. Vent hole. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] Reference Figure 3 , Figure 4 and Figure 6This utility model provides an embodiment of a foldable and portable cello case, including a body box 1, which serves as the main body of the case and provides space for the cello body, ensuring its stable placement. A body cover 3 is rotatably connected to the top of the body box 1 for easy insertion and removal of the cello. A headstock box 4 is slidably connected to the right side of the inner wall of the body box 1 for holding the cello head. A headstock cover 5 is rotatably connected to the top of the headstock box 4, allowing it to be opened or closed to protect the cello head placed inside. Two guide strips 6 are fixedly connected to adjacent sides of the body box 1 and the body cover 3 to guide the sliding of the headstock box 4. The path is designed so that the headstock 4 has a fixed trajectory during sliding. Two guide grooves 7 are provided on the opposite sides of both the headstock 4 and the headstock cover 5. Multiple guide strips 6 are slidably connected to the corresponding guide grooves 7. This sliding connection allows the headstock 4 to slide smoothly on the guide strips 6, completing the folding and unfolding of the case. Protective pads 8 are provided at the bottom of the inner walls of both the body case 1 and the headstock 4. These pads act as a buffer when the cello is placed inside the body case 1 and headstock 4, preventing direct contact between the body and headstock and the bottom of the case, thus preventing damage. Two hollow rods 9 are fixedly connected to the top right side of the body cover 3, providing sliding space for the insertion rod 10, allowing it to move up and down within it. The inner walls of the hollow rod 9 are slidably connected with insert rods 10. The insert rods 10 cooperate with the slots 13 to achieve a fixed connection between the body cover 3 and the headstock cover 5, ensuring the stability of the case during carrying and transportation. The outer walls of the two insert rods 10 are fixedly connected with limiting plates 11, which limit the movement range of the insert rods 10 and prevent them from coming out of the hollow rods 9. The tops of the two limiting plates 11 are fixedly connected with springs 12, and the tops of the two springs 12 are fixedly connected to the corresponding hollow rods 9, providing elastic force to the insert rods 10 so that they can remain inserted into the slots 13 when no external force is applied. The top left side of the headstock cover 5 has two slots 13, and the two insert rods 10 are slidably connected to the corresponding slots 13. The elastic force of the spring 12 controls the insertion and disengagement of the insertion rod 10 in the slot 13. The outer wall of the body box 1 is provided with a fixing component, and the bottom of the body box 1 is provided with a dustproof mechanism 2 to prevent impurities from entering the body box 1. The fixing component includes multiple hooks 14, which are convenient to be connected with the latches 15 on the front side of the outer wall of the body box 1 and the head box 4. The outer walls of the multiple hooks 14 are respectively fixedly connected to the front side of the outer wall of the body cover 3 and the head cover 5. Multiple latches 15 are fixedly connected to the front side of the outer wall of the body box 1 and the head box 4. The multiple hooks 14 are respectively engaged with the corresponding latches 15. Through the engagement of the hooks 14 and the latches 15, the connection between the various parts of the body box is further ensured to be tight, providing reliable protection for the cello.
[0034] Specifically, the body case 1, as the main part, provides storage space for the cello body. The body cover 3, which is rotatably connected to the top of the body case 1, can be opened or closed by rotating, facilitating the insertion and removal of the cello. The headstock case 4, which is slidably connected to the right side of the inner wall of the body case 1, and the headstock cover 5, which is rotatably connected to the top of the headstock case 4, together form the space for storing the cello headstock. This split design provides the basis for folding the case. The guide strip 6 fixed on one side of the body case 1 and the body cover 3, and the guide groove 7 opened on the other side of the headstock case 4 and the headstock cover 5, cooperate with each other. When the case needs to be folded, the headstock case... 4 can slide along the guide bar 6 in the guide groove 7, so that the headstock box 4 moves closer to the body box 1, thereby realizing the folding of the case in the length direction, which greatly reduces the space occupied. The hollow rod 9, the insert rod 10, the limiting plate 11 and the spring 12 on the top right side of the body cover 3 work together with the slot 13 opened on the top left side of the headstock cover 5. When the body cover 3 and the headstock cover 5 are connected, under the elastic force of the spring 12, the insert rod 10 is inserted into the slot 13 to fix the body cover 3 and the headstock cover 5, ensuring that the case effectively protects the cello. The hook 14 and the latch 15 can easily and quickly open and close the case.
[0035] Reference Figure 5 and Figure 7 The dustproof mechanism 2 includes a rotating rod 201, which connects and supports the dustproof plate 202 and provides a base for its rotation. The outer wall of the rotating rod 201 is rotatably connected to the bottom right end of the piano body box 1. The dustproof plate 202 is fixedly connected to the outer wall of the rotating rod 201. As a component that directly blocks dust, it can move to different positions under the drive of the rotating rod 201 to achieve the dustproof function. Magnets 1 203 are fixedly connected to the upper and lower sides of the outer wall of the dustproof plate 202. Magnets 1 203 attract each other with other magnetic components using magnetism to fix the position of the dustproof plate 202 and enhance its dustproof effect. Magnet 2 204 is fixedly connected to the right side of the outer wall of the piano body cover 3. After the piano body box is folded, it interacts with the upper magnet 1 203 and the magnet 2 204 on the right side of the outer wall of the piano body cover 3 to further stabilize the fit between the dustproof plate 202 and the piano body cover 3.
[0036] Specifically, when not folded, the dust cover 202 is attached to the bottom of the body box 1 by the magnet 203 on top, and is in close contact with the body box 1. After the body cover 3 is slid into the body box 1, the dust cover 202 is rotated to make it fit with the headstock box 4. After the dust cover 202 fits with the headstock box 4, the magnet 203 can be attracted by the magnet 204, so that the dust cover 202 fits tightly with the headstock box 4, blocking the opening on the right side of the body box 1 and the headstock box 4 to prevent dust from entering.
[0037] Reference Figure 1 , Figure 2 and Figure 4The bottom of the body case 1 is fixedly connected to the front and back sides with shoulder straps 16, allowing the user to carry the case on their back for easy carrying. The outer wall of each shoulder strap 16 is provided with an adjustment buckle 17 to adjust the length of the shoulder strap 16. The outer wall of the body case 1 is fixedly connected to the front side with a handle 18, which makes it easy for the user to carry the case. The surface of the handle 18 is treated with anti-slip to prevent the case from slipping when carried.
[0038] Specifically, the carrying strap 16 allows the user to carry the violin case on their back for easy portability. The adjustment buckle 17 located in the middle of the outer wall of the carrying strap 16 can adjust the length of the carrying strap 16 according to the user's height, body type and carrying comfort requirements. The handle 18, which is fixedly connected to the front of the outer wall of the violin case 1 and has an anti-slip surface, makes it easy for the user to carry the violin case. The anti-slip treatment increases the friction between the hand and the handle 18, preventing the violin case from slipping when carried, and ensuring safe and convenient carrying.
[0039] Reference Figure 1 , Figure 3 and Figure 7 Both insert rods 10 are fixedly connected to the same connecting handle 19 at their tops. By pulling the connecting handle 19, the spring force of the spring 12 is overcome, and the insert rod 10 is disengaged from the slot 13. The outer walls of the connecting handle 19 are all rounded. A nameplate 20 is fixedly connected to the top of the outer wall of the body cover 3. The surface of the nameplate 20 is treated with wear resistance so that the relevant information of the piano case can be clearly marked for a long time. A soft pad 21 is fixedly connected to the bottom of the piano case 1. It can cushion and reduce shock when placed. The surface of the soft pad 21 has multiple ventilation holes 22 to facilitate air circulation and prevent the piano body from being damaged by moisture.
[0040] Specifically, when the piano lid needs to be opened, the lifting connector 19 overcomes the spring force of the spring 12, causing the insert 10 to disengage from the slot 13. The nameplate 20 on the top of the outer wall of the piano body cover 3 is treated with wear-resistant material, which can clearly mark the relevant information of the piano case for a long time. The soft pad 21 at the bottom of the piano body case 1 and the ventilation holes 22 on the surface can cushion and reduce shock when placed. The ventilation holes 22 facilitate air circulation and prevent the piano body from being damaged by moisture.
[0041] Working principle: When the cello case needs to be folded to reduce space, first take the cello out of the case, then engage the body box 1 with the body cover 3, and engage the head box 4 with the head cover 5. Pull the two insert rods 10 upwards so that the limiting plate 11 compresses the spring 12, and the insert rods 10 are pulled out from the slot 13. Due to the cooperation of the guide strip 6 fixed on one side of the body box 1 and the body cover 3, and the guide groove 7 opened on the other side of the head box 4 and the head cover 5, the user can push the head box 4 so that it slides along the guide strip 6 in the guide groove 7 and moves closer to the body box 1, realizing the folding of the case in the length direction. When it needs to be unfolded, pull the insert rods 10 upwards again, and then move the head box 4 and the head cover 5 to the right. When they move to the slot 13 and correspond to the insert rods 10, the insert rods 10 push the limiting plate 11 and the insert rods 10 downwards under the action of the spring 12, so that the insert rods 10 are inserted into the slot 13, thus fixing the head box 4.
[0042] When the guitar case is not folded, the dustproof mechanism 2 is in a ready and effective dustproof state. The rotating rod 201 is rotatably connected to the bottom right end of the guitar body case 1, providing a basis for the rotation of the dustproof plate 202. Magnets 203 are fixedly connected to the upper and lower sides of the outer wall of the dustproof plate 202. In the initial state, the top magnet 203 attracts the bottom of the guitar body case 1, making the dustproof plate 202 tightly adhere to the bottom of the guitar body case 1. When the guitar case needs to be folded and the headstock 4 is slid into the guitar body case 1, the dustproof plate 202 is rotated. Due to the connection of the rotating rod 201, the dustproof plate 202 can rotate around it. After rotation, the dustproof plate 202 adheres to the guitar body cover 3. At this time, the magnet 203 on the dustproof plate 202 attracts the magnet 204 fixedly connected to the right side of the outer wall of the guitar body cover 3. Under the action of magnetic force, the dustproof plate 202 is tightly attached to the guitar body cover 3, successfully blocking the opening on the right side of the guitar body case 1 and the guitar body cover 3, which can effectively block dust.
[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. Foldable portable cello case comprising a body case (1), characterized in that: The top of the body box (1) is rotatably connected to the body cover (3), the right side of the inner wall of the body box (1) is slidably connected to the headstock box (4), the top of the headstock box (4) is rotatably connected to the headstock cover (5), two guide strips (6) are fixedly connected to the adjacent side of the body box (1) and the body cover (3), two guide grooves (7) are opened on the opposite side of the headstock box (4) and the headstock cover (5), and multiple guide strips (6) are slidably connected to the corresponding guide grooves (7). Protective pads (8) are provided at the bottom of the inner wall of the body box (1) and the headstock box (4), and two hollow rods (9) are fixedly connected to the top right side of the body cover (3). The inner walls of the two hollow rods (9) are slidably connected with insert rods (10), the middle of the outer walls of the two insert rods (10) are fixedly connected with limit plates (11), the tops of the two limit plates (11) are fixedly connected with springs (12), the tops of the two springs (12) are fixedly connected to the corresponding hollow rods (9), the top left side of the headstock cover (5) has two slots (13), the two insert rods (10) are slidably connected to the corresponding slots (13), the outer wall of the body box (1) is provided with a fixing component, the bottom of the body box (1) is provided with a dustproof mechanism (2), the dustproof mechanism (2) is used to prevent impurities from entering the body box (1).
2. The collapsible portable cello case of claim 1, wherein: The dustproof mechanism (2) includes a rotating rod (201). The outer wall of the rotating rod (201) is rotatably connected to the bottom right end of the piano body box (1). A dustproof plate (202) is fixedly connected to the outer wall of the rotating rod (201). A magnet (203) is fixedly connected to the upper and lower sides of the outer wall of the dustproof plate (202). A magnet (204) is fixedly connected to the right side of the outer wall of the piano body cover (3).
3. The foldable and portable cello case according to claim 1, characterized in that: The fixing component includes multiple hooks (14), the outer walls of the multiple hooks (14) are respectively fixedly connected to the front side of the outer wall of the body cover (3) and the head cover (5), and multiple latches (15) are fixedly connected to the front side of the outer wall of the body box (1) and the head box (4), and the multiple hooks (14) are respectively engaged with the corresponding latches (15).
4. The collapsible portable cello case of claim 1, wherein: The bottom front and back sides of the body box (1) are fixedly connected with a strap (16), and an adjustment buckle (17) is provided in the middle of the outer wall of each of the two straps (16).
5. The collapsible portable cello case of claim 1, wherein: A handle (18) is fixedly connected to the front side of the outer wall of the piano body box (1), and the surface of the handle (18) is treated with anti-slip treatment.
6. The collapsible portable cello case of claim 1, wherein: The top of each of the two insertion rods (10) is fixedly connected to the same connecting handle (19), and the outer walls of the connecting handle (19) are all rounded.
7. The collapsible portable cello case of claim 1, wherein: A nameplate (20) is fixedly connected to the top of the outer wall of the instrument body cover (3), and the surface of the nameplate (20) is treated with wear resistance.
8. The collapsible portable cello case of claim 1, wherein: The bottom of the piano body box (1) is fixedly connected to a soft pad (21), and the surface of the soft pad (21) is provided with multiple ventilation holes (22).