Cello tailpiece fastening fitting

Abstract

The utility model discloses a kind of cello tail button fastening fittings, including cello body and the tail button of being set to the tail end of cello body, the tail button is hollow structure, and the inside of one end of tail button movably plugs in tail needle, and the one end of tail button away from cello body is equipped with stud, the outside of tail needle movably sheathed has screwing part, the one end of screwing part close to stud is equipped with annular locking groove, the inner wall of annular locking groove and the outer wall of stud thread cooperation, the end of annular locking groove movably is equipped with stress block, the inside of the one end of screwing part away from stud is equipped with opening, and the inside of opening is movably connected with clamping block along the radial direction of screwing part. The cello tail button fastening fitting, the cooperation of stud, screwing part, annular locking groove, stress block, clamping block, guide slot, guide block, push rod set by setting, can be conveniently connected and fixed between tail needle and tail button, the adjustment of tail needle is facilitated, simultaneously with tail button is detachably set, can be independently maintained, and it is convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of musical instrument accessories, and in particular to a cello tailpiece fastening accessory. Background Technology

[0002] Currently, the fastening of cello tailpieces mainly relies on traditional structural designs. The common form is that the tailpiece itself is made of hardwood with a conical hole machined in the center. The tailpiece is fixed by the friction between its conical end and the wooden hole wall. Although there are some improved solutions, such as integrating a simple locking knob mechanism on the upper end of the tailpiece, these locking structures are usually rigidly connected and fixed as a whole with the tailpiece itself or the wooden tailpiece body, and cannot be disassembled or replaced separately.

[0003] However, the wooden tail button hole is prone to wear and expansion due to changes in environmental humidity, long-term friction, or improper installation, leading to failure of the taper fit. The tail pin is very easy to slip or even retract on its own, which seriously affects the stability of playing. Secondly, some locking mechanisms are integrated with the tail button or tail pin. Once the locking function fails or the tail button hole is worn and needs repair, it is often necessary to disassemble and replace the entire tail button along with the locking component. This is not only complicated and inconvenient to operate, increasing maintenance costs and time, but the disassembly process itself carries the risk of damaging the key load-bearing structure at the bottom of the instrument—the wood of the bottom post.

[0004] Therefore, it is necessary to propose a cello tailpiece fastening accessory to solve the above problems. Utility Model Content

[0005] The main purpose of this utility model is to provide a cello tailpiece fastening accessory that can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A cello tailpiece fastening accessory includes a cello body and a tailpiece located at the tail end of the cello body. The tailpiece has a hollow structure. A tailpiece pin is movably inserted into the inner side of one end of the tailpiece. A stud is installed at the end of the tailpiece away from the cello body. A screwing component is movably sleeved on the outer side of the tailpiece. An annular locking groove is provided at the end of the screwing component near the stud. The inner wall of the annular locking groove is threaded with the outer wall of the stud. A force-bearing block is movably provided at the end of the annular locking groove. An opening is provided on the inner side of the end of the screwing component away from the stud. A clamping block is movably connected to the inner side of the opening along the radial direction of the screwing component. A guide groove is provided at one end of the clamping block. A push rod extending to the inner side of the opening is provided at one end of the force-bearing block, and a guide block that movably guides the push rod away from the force-bearing block.

[0007] Preferably, a second elastic element is provided between the side of the force-bearing block near the opening and the inner wall of the annular locking groove, and the second elastic element is used to reset the force-bearing block.

[0008] Preferably, one end of the clamping block is provided with a rubber pad, which is used to abut against the outer wall of the tail needle.

[0009] Preferably, the cello body has a fastening hole at the tail end, and the end of the tail button facing away from the stud has a bottom post head that matches the fastening hole, with the outer wall of the bottom post head threadedly engaging with the inner wall of the fastening hole.

[0010] Preferably, a groove is provided on the outer periphery of the end of the bottom post away from the stud, a reinforcing member is movably provided on the inner side of the groove, a first elastic member is provided between one side of the reinforcing member and the inner wall of the groove, and when the first elastic member is in the reset state, one end of the reinforcing member protrudes from the side wall of the bottom post.

[0011] Preferably, the reinforcing member is annular, and the side of the reinforcing member away from the first elastic member is uniformly surrounded by balls, which are movably disposed on the inner side wall of the reinforcing member.

[0012] Compared with the prior art, this utility model provides a cello tailpiece fastening accessory, which has the following beneficial effects: This cello tailpiece fastening accessory, through the cooperation of studs, screws, annular locking grooves, force-bearing blocks, clamping blocks, guide grooves, guide blocks, and push rods, facilitates the connection and fixation between the tailpiece and the tailpiece, making it easy to adjust the tailpiece. At the same time, it is detachable from the tailpiece, allowing for separate maintenance and inspection, making it convenient to operate and increasing its practicality. The tailpiece fastening fitting for this cello features a base head and a fastening hole that increase the stability between the tailpiece and the cello body. The reinforcement and the first elastic element further enhance the stability between the tailpiece and the cello body, reducing the possibility of the base head and the fastening hole becoming loose. The ball bearings also reduce friction. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural diagram of the tail button and cello body of this utility model in a disassembled state; Figure 3 This is a structural diagram of the tail pin, tail button, and screwing parts of this utility model in their disassembled state; Figure 4 This is a structural diagram of the reinforcement component and the bottom column head of this utility model in a disassembled state; Figure 5 This is a cross-sectional structural diagram of the screwing component of this utility model.

[0014] In the diagram: 1. Cello body; 2. Tailpin; 3. Tail button; 4. Tightening component; 5. Fastening hole; 6. Base pin; 7. Stud; 8. Reinforcing component; 9. Annular locking groove; 10. Ball bearing; 11. First elastic element; 12. Groove; 13. Opening; 14. Clamping block; 15. Rubber pad; 16. Guide groove; 17. Guide block; 18. Force-bearing block; 19. Push rod; 20. Second elastic element. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] like Figure 1-5 As shown, a cello tailpiece fastening accessory includes a cello body 1 and a tailpiece 3 located at the tail end of the cello body 1. Specifically, the tail end of the cello body 1 has a fastening hole 5. The end of the tailpiece 3 facing away from the stud 7 has a bottom post 6 that matches the fastening hole 5. The outer wall of the bottom post 6 is threaded into the inner wall of the fastening hole 5. The tailpiece 3 has a hollow structure. A tailpiece pin 2 is movably inserted into the inner side of one end of the tailpiece 3. The stud 7 is installed at the end of the tailpiece 3 away from the cello body 1. A screwing component 4 is movably sleeved on the outside of the tailpiece pin 2, and the screwing component 4 is close to the stud 7. One end of the screw 4 is provided with an annular locking groove 9. The inner wall of the annular locking groove 9 is threaded with the outer wall of the stud 7. The end of the annular locking groove 9 is movably provided with a force-bearing block 18. The inner side of the end of the screw 4 away from the stud 7 is provided with an opening 13. The inner side of the opening 13 is movably connected with a clamping block 14 along the radial direction of the screw 4. One end of the clamping block 14 is provided with an inclined guide groove 16. One end of the force-bearing block 18 is provided with a push rod 19 extending to the inner side of the opening 13. The end of the push rod 19 away from the force-bearing block 18 is provided with a guide block 17 that is movably guided and cooperates with the guide groove 16.

[0017] To facilitate the reset of the second elastic element 20, a second elastic element 20 is provided between the side of the force block 18 near the opening 13 and the inner wall of the annular locking groove 9. The second elastic element 20 is preferably a spring.

[0018] To avoid damage to the tail needle 2, a rubber pad 15 is provided at one end of the clamping block 14. The rubber pad 15 is used to abut against the outer wall of the tail needle 2.

[0019] To increase the stability between the tailpiece 3 and the cello body 1, a groove 12 is provided on the outer periphery of the end of the bottom post 6 away from the stud 7. A reinforcing member 8 is movably provided on the inner side of the groove 12. A first elastic member 11 is provided between one side of the reinforcing member 8 and the inner wall of the groove 12. The first elastic member 11 is preferably a spring. When the first elastic member 11 is in the reset state, one end of the reinforcing member 8 protrudes from the side wall of the bottom post 6. In order to reduce the friction between the reinforcing member 8 and the inner wall of the fastening hole 5, a ball bearing 10 is evenly arranged around the side of the reinforcing member 8 away from the first elastic member 11. The ball bearing 10 is movably disposed on the inner side of the side wall of the reinforcing member 8.

[0020] It should be noted that this utility model is a cello tailpiece fastening accessory. In use, the bottom post 6 at one end of the tailpiece 3 is screwed into the fastening hole 5. As the bottom post 6 enters, the protruding reinforcement 8 at one end of the bottom post 6 contacts the inner wall of the fastening hole 5. The reinforcement 8 then gradually compresses the first elastic element 11. The ball bearing 10 reduces the friction between the reinforcement 8 and the inner wall of the fastening hole 5. The first elastic element 11 generates a counterforce, thereby increasing the friction between the bottom post 6 and the fastening hole 5. To ensure stability between holes 5, the tail needle 2 is inserted into the tail button 3. The screwing part 4 is then placed on the tail needle 2. After adjusting the position of the tail needle 2, the annular locking groove 9 at one end of the screwing part 4 is aligned with the stud 7. The screwing part 4 is then screwed, and the end of the stud 7 will press against the force block 18. The force block 18 drives the guide block 17 to move through the push rod 19. Under the action of the guide groove 16, the clamping block 14 moves. The clamping block 14 clamps the outer wall of the tail needle 2 through the rubber pad 15 at one end.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cello tailpiece fastening accessory, comprising a cello body (1) and a tailpiece (3) disposed at the tail end of the cello body (1), characterized in that: The tail button (3) has a hollow structure. A tail pin (2) is movably inserted into the inner side of one end of the tail button (3). A stud (7) is installed at the end of the tail button (3) away from the cello body (1). A screwing part (4) is movably sleeved on the outside of the tail pin (2). An annular locking groove (9) is provided at the end of the screwing part (4) near the stud (7). The inner wall of the annular locking groove (9) is threaded with the outer wall of the stud (7). A force-bearing block (18) is movably provided at the end of the annular locking groove (9). An opening (13) is provided on the inner side of the end of the screwing part (4) away from the stud (7). A clamping block (14) is movably connected to the inner side of the opening (13) along the radial direction of the screwing part (4). A guide groove (16) is provided at one end of the clamping block (14). A push rod (19) extending to the inner side of the opening (13) is provided at one end of the force block (18). A guide block (17) is provided on the end of the push rod (19) away from the force block (18) to move and guide the guide groove (16).

2. The cello tailpiece fastening accessory according to claim 1, characterized in that: A second elastic element (20) is provided between the side of the force block (18) near the opening (13) and the inner wall of the annular locking groove (9). The second elastic element (20) is used to reset the force block (18).

3. The cello tailpiece fastening accessory according to claim 1, characterized in that: One end of the clamping block (14) is provided with a rubber pad (15), which is used to abut against the outer wall of the tail needle (2).

4. The cello tailpiece fastening accessory according to claim 1, characterized in that: The cello body (1) has a fastening hole (5) at the tail end, and the tail button (3) has a bottom pin (6) that is adapted to the fastening hole (5) at the end facing away from the stud (7). The outer wall of the bottom pin (6) is threadedly engaged with the inner wall of the fastening hole (5).

5. A cello tailpiece fastening accessory according to claim 4, characterized in that: The bottom post (6) has a groove (12) on the outer periphery of the end away from the stud (7). A reinforcing member (8) is movably provided on the inner side of the groove (12). A first elastic member (11) is provided between one side of the reinforcing member (8) and the inner wall of the groove (12). When the first elastic member (11) is in the reset state, one end of the reinforcing member (8) protrudes from the side wall of the bottom post (6).

6. A cello tailpiece fastening accessory according to claim 5, characterized in that: The reinforcing member (8) is annular, and a ball bearing (10) is uniformly arranged around the side of the reinforcing member (8) away from the first elastic member (11), and the ball bearing (10) is movably arranged inside the side wall of the reinforcing member (8).

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