A center plate that can be adjusted in deformation

Abstract

The present application relates to a kind of adjustable deformation middle disc, including piano middle disc, adjustable panel and pull rod, the adjustable panel is installed in the piano middle disc, the pull rod is installed on the adjustable panel, one end and middle part of the pull rod are docked with adjustable panel by welding portion, the other end is docked with adjustable panel using telescopic structure, when telescopic structure is lengthened, make the both ends of adjustable panel bend downwards, to control the both ends of piano middle disc bend upwards, when telescopic structure is contracted, make the middle part of adjustable panel bend downwards, to make the middle part of piano middle disc bend downwards.The present application has the characteristics such as simple structure, easy to install, adjustment speed, without changing the overall structure of piano middle disc, eliminate the problem of middle disc deformation.

Description

Technical Field

[0001] This invention relates to the field of piano component technology, and in particular to an adjustable and deformable center plate. Background Technology

[0002] Today, most pianos on the market use a wooden center plate. Manufacturers try their best to reinforce the center plate and reduce warping. Even so, some center plates still warp for various reasons. For warped center plates, piano maintenance personnel have almost no way to correct them; they can only adjust the action and keyboard settings to reduce the impact of warping, sacrificing some touch. If the warping exceeds the adjustment parameters, the center plate needs to be replaced.

[0003] To solve the above problems, a new mid-plate structure needs to be designed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a deformable center plate. Based on the traditional wooden center plate, a metal strip with adjustable curvature is embedded along the length direction. When the center plate deforms, the curvature of the metal strip can be adjusted by wrench to increase the internal stress of the center plate in the opposite direction of deformation, thereby eliminating the deformation of the center plate.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: an adjustable and deformable middle plate is provided, including a piano middle plate, an adjustable panel, and a pull rod. The adjustable panel is installed inside the piano middle plate, and the pull rod is installed on the adjustable panel. One end and the middle of the pull rod are connected to the adjustable panel through a welding part, and the other end is connected to the adjustable panel through a telescopic structure. When the telescopic structure extends, the two ends of the adjustable panel bend downward, thereby controlling the two ends of the piano middle plate to bend upward. When the telescopic structure retracts, the middle of the adjustable panel bends downward, thereby causing the middle of the piano middle plate to bend downward.

[0006] In this technical solution, an adjustable panel is installed inside the piano's center plate. The bending of the adjustable panel is used to adjust the piano's center plate and eliminate center plate deformation. At the same time, a pull rod is installed to make the adjustable panel bend. One end of the pull rod is a telescopic structure, and the other end and the middle are welded to the adjustable panel, thereby realizing the bending of the adjustable panel.

[0007] As a supplement to this technical solution, the adjustable panel includes a base plate and an adjusting threaded housing. The adjusting threaded housing is installed on the base plate, and an adjusting nut mounting cavity is formed between the base plate and the adjusting threaded housing. An adjusting nut is rotatably installed in the adjusting nut mounting cavity. The telescopic structure of the pull rod adopts a threaded rod structure, which is inserted into the adjusting nut mounting cavity and forms a threaded connection with the internal thread on one end of the adjusting nut.

[0008] By setting a base plate as the deformation body, it is ensured that there will be no permanent damage after deformation. At the same time, an adjusting nut mounting cavity is set to facilitate the installation of the adjusting thread. The telescopic structure is realized by adjusting the thread and thread rod structure. The deformation characteristics of the adjustable panel can be controlled by increasing or decreasing the length of the tie rod.

[0009] As a supplement to this technical solution, an adjustment hole is provided at the end of the adjusting nut mounting cavity opposite to the pull rod position. The adjustment hole is provided to facilitate the worker to rotate the adjusting nut.

[0010] As a supplement to this technical solution, the piano center plate is provided with a reserved adjustment space that communicates with the adjustment hole. The reserved adjustment space is provided to facilitate the insertion of the screw and the rotation of the adjustment nut by the screw.

[0011] As a supplement to this technical solution, copper washers are installed at both ends of the adjusting nut mounting cavity, which abut against both ends of the adjusting nut. By adding copper washers, the adjusting nut is supported, preventing the adjusting nut from damaging the adjusting nut mounting cavity.

[0012] As a supplement to this technical solution, the other end of the adjusting nut is provided with a hexagonal inner hole, which is used to facilitate the worker to rotate the adjusting nut.

[0013] Beneficial effects: This invention relates to an adjustable and deformable middle plate. By setting an adjustable panel inside the piano middle plate, the bending of the adjustable panel can adjust the piano middle plate and eliminate middle plate deformation. At the same time, by installing a pull rod, the adjustable panel can be bent. One end of the pull rod is a telescopic structure, and the other end and the middle part are welded to the adjustable panel, thereby realizing the bending of the adjustable panel. It has the characteristics of simple structure, convenient installation, fast adjustment speed, and eliminating the problem of middle plate deformation without changing the overall structure of the piano middle plate. Attached Figure Description

[0014] Figure 1 This is a structural view of the present invention;

[0015] Figure 2 This is a structural view of the adjustable panel described in this invention;

[0016] Figure 3 This is the present invention. Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This is a structural view of the adjustable panel when the pull rod of the present invention is retracted;

[0018] Figure 5 This is a structural view of the adjustable panel when the pull rod of the present invention is extended.

[0019] Diagram: 1. Piano center plate, 2. Adjustable panel, 3. Pull rod, 4. Welded part, 5. Reserved adjustment space, 6. Screw, 7. Base plate, 8. Adjusting nut, 9. Adjusting thread housing, 10. Threaded rod structure, 11. Adjusting nut mounting cavity, 12. Copper washer, 13. Adjusting hole, 14. Hexagonal inner hole. Detailed Implementation

[0020] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0021] Embodiments of the present invention relate to an adjustable and deformable middle plate, such as... Figure 1 As shown in Figure 3, the piano includes a middle plate 1, an adjustable panel 2, and a lever 3. The adjustable panel 2 is installed inside the middle plate 1, and the lever 3 is installed on the adjustable panel 2. One end and the middle of the lever 3 are connected to the adjustable panel 2 through a welding part 4, and the other end is connected to the adjustable panel 2 through a telescopic structure. When the telescopic structure extends, the two ends of the adjustable panel 2 bend downward, thereby controlling the two ends of the middle plate 1 to bend upward. When the telescopic structure retracts, the middle of the adjustable panel 2 bends downward, thereby causing the middle of the middle plate 1 to bend downward.

[0022] In this technical solution, an adjustable panel 2 is set inside the piano middle plate 1, so that the bending of the adjustable panel 2 can adjust the piano middle plate 1 and eliminate the deformation of the middle plate. At the same time, a pull rod 3 is installed to make the adjustable panel 2 bend. One end of the pull rod 3 is a telescopic structure, and the other end and the middle part are welded to the adjustable panel 2, thereby realizing the bending of the adjustable panel 2.

[0023] As a supplement to this technical solution, the adjustable panel 2 includes a base plate 7 and an adjusting threaded housing 9. The adjusting threaded housing 9 is installed on the base plate 7, and an adjusting nut mounting cavity 11 is formed between the base plate 7 and the adjusting threaded housing 9. An adjusting nut 8 is rotatably installed in the adjusting nut mounting cavity 11. The telescopic structure of the pull rod 3 adopts a threaded rod structure 10. The threaded rod structure 10 is inserted into the adjusting nut mounting cavity 11 and forms a threaded connection with the internal thread on one end of the adjusting nut 8.

[0024] By setting the base plate 7 as the deformation body, it is ensured that it will not be permanently damaged after deformation. At the same time, the adjusting nut mounting cavity 11 is set to facilitate the installation of the adjusting thread 8. The telescopic structure is realized by adjusting the thread 8 and the thread rod structure 10. The deformation characteristics of the adjustable panel 2 can be controlled by increasing or decreasing the length of the pull rod 3.

[0025] As a supplement to this technical solution, an adjustment hole 13 is provided at the end of the adjusting nut mounting cavity 11 opposite to the position of the pull rod 3. The adjustment hole 13 is provided to facilitate the worker to rotate the adjusting nut 8.

[0026] As a supplement to this technical solution, the piano middle plate 1 is provided with a reserved adjustment space 5 that communicates with the adjustment hole 13. The reserved adjustment space 5 is provided to facilitate the insertion of the screw 6 and the rotation of the adjustment nut 8 by the screw 6.

[0027] As a supplement to this technical solution, copper washers 12 are installed at both ends of the adjusting nut mounting cavity 11, which abut against both ends of the adjusting nut 8. By adding copper washers 12, the adjusting nut 8 is supported, preventing the adjusting nut 8 from damaging the adjusting nut mounting cavity 11.

[0028] As a supplement to this technical solution, the other end of the adjusting nut 8 is provided with a hexagonal inner hole 14, which is used to facilitate the worker to rotate the adjusting nut 8.

[0029] Example

[0030] When the center of the piano's middle plate 1 is concave or both ends are upturned, the adjustable panel 2 needs to be bent to resemble... Figure 4 As shown, the worker inserts the screw 6 into the reserved adjustment space 5. The bent adjustment head of the screw 6 passes through the adjustment hole 13 and connects with the hexagonal inner hole 14. Then, the screw 6 is rotated, causing the screw 6 to drive the adjustment nut 8 to rotate. The adjustment nut 8 extends the threaded rod structure 10 through the threaded structure, increasing the overall length of the pull rod 3. The adjustable panel 2 is bent through the welding part 4, and the overall bending of the piano center plate 1 is corrected by bending the adjustable panel 2.

[0031] When the two ends of the piano's center plate 1 sink, rotate screw 6 in the opposite direction to make the adjustable panel 2 appear as shown. Figure 5 The same state is achieved, thus restoring the middle plate of the piano to its original state.

[0032] 1. This method can correct the deformation of the piano's middle plate to a certain extent, eliminate the influence of the middle plate deformation on the tuning parameters, and thus ensure the piano's touch.

[0033] 2. The metal strip for adjusting curvature is embedded inside the center plate, and the adjustment hole is placed in a concealed position, so it does not affect the appearance of the piano.

[0034] 3. The method for adjusting the curvature is very simple and easy to operate;

[0035] 4. Extend the service life of the piano.

[0036] The above provides a detailed description of an adjustable and deformable disc provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A midsole that can be adjusted for deformation, characterized by: Including piano middle disc (1), adjustable panel (2) and pull rod (3), the piano middle disc (1) is installed with adjustable panel (2), the adjustable panel (2) is installed with pull rod (3), one end and middle part of pull rod (3) are connected with adjustable panel (2) through welding part (4), the other end is connected with adjustable panel (2) using telescopic structure, when telescopic structure is lengthened, the both ends of adjustable panel (2) are bent downwards, so as to control the both ends of piano middle disc (1) are bent upwards, when telescopic structure is contracted, the middle part of adjustable panel (2) is bent downwards, so as to make the middle part of piano middle disc (1) is bent downwards, the adjustable panel (2) includes bottom plate (7) and adjusting screw thread shell (9), the bottom plate (7) is installed with adjusting screw thread shell (9), the bottom plate (7) and adjusting screw thread shell (9) form adjusting nut mounting cavity (11), the adjusting nut mounting cavity (11) is rotatably installed with adjusting nut (8), the telescopic structure of pull rod (3) adopts screw rod structure (10), the screw rod structure (10) is inserted into adjusting nut mounting cavity (11) and is connected with the inner thread on one end of adjusting nut (8) to form thread joint, the adjusting nut mounting cavity (11) is provided with adjusting hole (13) at the position opposite to pull rod (3), the piano middle disc (1) is provided with reserved adjusting space (5) communicated with adjusting hole (13).

2. The adjustable deformation center disc of claim 1, wherein: The both ends of adjusting nut mounting cavity (11) are installed with copper gasket (12) toping with both ends of adjusting nut (8).

3. The adjustable deformable center disc of claim 1, wherein: The other end of adjusting nut (8) is internally provided with hexagonal hole (14).

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