Long-service-life key facilitating accurate multi-dimensional parameter adjustment
By introducing press-end adjustment screws and middle adjustment screws into the keys, the problems of loosening, increasing noise and high maintenance costs during use of traditional keys are solved, and the precise adjustment of key parameters and the extension of service life are achieved.
Patent Information
- Application Number
- CN202421500334.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-06-28
AI Technical Summary
During use, traditional keys are loose, noise increases, and feel worse due to thinning hole walls and changes in the shape of the wool felt during the use, making the maintenance cost high and it is difficult to accurately adjust the parameters.
A long-life key including a pressing end adjustment screw, a middle lower adjustment screw, and a middle upper adjustment screw is designed. Through these adjustment screws, the clearance between the limit pin and the hole wall is adjusted to achieve accurate multi-dimensional adjustment of the key parameters.
High-precision adjustment of the keys is achieved, reducing shaking and noise, increasing damping and feel, reducing maintenance costs and extending service life.
Smart Images
Figure CN222927193U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a key, in particular to a long-life key which is convenient for accurately adjusting parameters in multiple dimensions. Background Art
[0002] In a narrow sense, a piano generally refers to a grand piano, and in a broad sense, it refers to a keyboard instrument; in a narrow sense, a key generally refers to a piano keyboard, and in a broad sense, it refers to the keyboard of a keyboard instrument. The key of the utility model is the keyboard of a keyboard instrument in a broad sense, and of course, it is also more suitable as the key of a piano.
[0003] As Figure 1 and Figure 2 shown, the basic structure of a single traditional key includes a traditional button 2 for manual pressing and a key seat 1 for installing the traditional button 2. Both the traditional button 2 and the key seat 1 are strip-shaped. The horizontal traditional button 2 is located above the horizontal key seat 1. A convex platform 3 protruding upward is provided in the middle section of the key seat 1. A convex strip 7 protruding upward is provided on the upper surface of the convex platform 3. The length direction of the convex strip 7 is perpendicular to the length direction of the key seat 1. The radial cross-section of the convex strip 7 is an inverted "V" shape, and its top corner contacts the lower surface of the middle part of the traditional button 2. In this way, the pressing end (one of the two ends of the traditional button 2) of the traditional button 2 can move up and down a small distance in the direction of rotating around the convex strip 7. When pressing the pressing end of the traditional button 2 with hand, the linkage end (the other end of the two ends of the traditional button 2) of the traditional button 2 will move upward and push up a linkage (not shown in the figure), and the linkage drives a hammer (not shown in the figure) to strike a string (not shown in the figure) to emit a piano sound; a vertical traditional pressing-end waist-shaped hole 8 (the waist-shaped hole is also called a flat-shaped hole) is provided at a position near the pressing end of the traditional button 2. The upper end of the traditional pressing-end waist-shaped hole 8 does not penetrate the upper surface of the traditional button 2. A vertical traditional middle waist-shaped hole 4 is provided in the upper part of the middle section of the traditional button 2, and a vertical traditional middle limiting round hole 5 is provided in the lower part of the middle section of the traditional button 2. A vertical pressing-end limiting pin 9 (generally a flat-shaped pin) is provided at a position on the key seat 1 below the traditional pressing-end waist-shaped hole 8. The middle upper section of the pressing-end limiting pin 9 is located in the traditional pressing-end waist-shaped hole 8. A vertical middle limiting pin 6 (a round pin) is provided at a position on the key seat 1 below the traditional middle limiting round hole 5. The lower end of the middle limiting pin 6 is located on the convex strip 7, and the middle upper section of the middle limiting pin 6 is located in the traditional middle limiting round hole 5 and the traditional middle waist-shaped hole 4. The cooperation between the middle limiting pin 6 and the traditional middle limiting round hole 5 realizes the limiting rotation function of the traditional button 2. The cooperation between the middle limiting pin 6 and the traditional middle waist-shaped hole 4, and the cooperation between the pressing-end limiting pin 9 and the traditional pressing-end waist-shaped hole 8 jointly realize the limiting vertical movement function of the pressing end of the traditional button 2. There are various closely related cooperation factors such as shaking, damping, noise, and friction life between the middle limiting pin 6 and the hole walls of the traditional middle limiting round hole 5 and the middle waist-shaped hole 4, and between the pressing-end limiting pin 9 and the hole walls of the traditional pressing-end waist-shaped hole 8.
[0004] As Figure 1 and Figure 2 shown, the above traditional keys have the following structural defects and effect defects: The middle limit pin 6 and the hole wall of the traditional middle limit round hole 5 achieve the effects of meeting the movement needs of the traditional key 2, reducing shaking, and increasing damping through the design of the clearance size. Therefore, the requirement for the clearance size is relatively high, which will increase the processing cost. Between the middle limit pin 6 and the hole wall of the traditional middle waist-shaped hole 4, and between the pressing end limit pin 9 and the hole wall of the traditional pressing end waist-shaped hole 8, the effects of meeting the movement needs of the traditional key 2, reducing shaking, increasing damping, and reducing noise are achieved through the design of the clearance size and filling with wool felt. After using for a period of time, the hole walls of the traditional middle limit round hole 5, the traditional middle waist-shaped hole 4, and the traditional pressing end waist-shaped hole 8 will become thinner, the hole size will increase, the clearance between each hole and the corresponding limit pin will increase, and there is no restorability, resulting in the loosening of the traditional key 2, a worse feel when playing the piano, and an increase in noise. Moreover, since the traditional key 2 is a wooden key, its friction life is relatively small (that is, the number of friction times without deformation is less), and the above problems are more serious; at the same time, the wool felt will also show obvious shape changes during long-term use and the temperature and humidity changes brought about by seasonal changes, which will also cause the above problems. During subsequent maintenance, since the corresponding hole diameters of the traditional key 2 have increased, it is impossible to adjust parameters such as damping and noise through the clearances between the middle limit pin 6 and the hole walls of the traditional middle limit round hole 5 and the traditional middle waist-shaped hole 4, and between the pressing end limit pin 9 and the hole wall of the traditional pressing end waist-shaped hole. And it is very difficult to achieve precise adjustment simply by increasing the wool felt. Therefore, these problems can often only be solved by directly replacing the entire traditional key 2, resulting in a high maintenance cost, and it is also difficult to find suitable keys to replace for some pianos with a small market stock. Summary of the Invention
[0005] The purpose of the present invention is to provide a long-life key that is more convenient for subsequent maintenance, has a longer friction life, and is convenient for precisely adjusting parameters in multiple dimensions in order to solve the above problems.
[0006] The present invention realizes the above purpose through the following technical solutions:
[0007] A long-life key for facilitating precise multi-dimensional parameter adjustment, comprising a long-strip-shaped key and a long-strip-shaped key seat. The horizontal key is located above the horizontal key seat. A vertical pressing-end waist-shaped hole is provided at a position on the key near its pressing end. A vertical pressing-end limiting pin is provided at a position on the key seat below the pressing-end waist-shaped hole. The middle and upper section of the pressing-end limiting pin is located within the pressing-end waist-shaped hole. A vertically penetrating middle waist-shaped hole is provided in the middle section of the key. A vertical middle limiting pin is provided on the upper surface of the middle section of the key seat. The long-life key for facilitating precise multi-dimensional parameter adjustment further comprises a pressing-end adjusting screw, a middle-lower adjusting screw, a middle-lower adjusting block, a middle-lower mounting screw, a middle-upper adjusting screw, a middle-upper adjusting block, and a middle-upper mounting screw. A horizontally penetrating pressing-end adjusting screw hole is provided on the hole wall of the pressing-end waist-shaped hole. The pressing-end adjusting screw is placed within the pressing-end adjusting screw hole. The middle-lower adjusting block is located between the lower part of the middle section of the key and the upper part of the middle section of the key seat. The screw rod of the middle-lower mounting screw passes through the lower mounting through hole on the middle-lower adjusting block from bottom to top and is connected to the lower mounting screw hole on the lower surface of the middle section of the key. A vertically penetrating adjusting-block circular through hole is provided on the middle-lower adjusting block, and a horizontally penetrating middle-lower adjusting screw hole is provided on the hole wall of the adjusting-block circular through hole. The middle-lower adjusting screw is placed within the middle-lower adjusting screw hole. The middle-upper adjusting block is located above the middle section of the key. The screw rod of the middle-upper mounting screw passes through the upper mounting through hole on the middle-upper adjusting block from top to bottom and is connected to the upper mounting screw hole on the upper surface of the middle section of the key. A vertically penetrating adjusting-block waist-shaped through hole is provided on the middle-upper adjusting block, and a horizontally penetrating middle-upper adjusting screw hole is provided on the hole wall of the adjusting-block waist-shaped through hole. The middle-upper adjusting screw is placed within the middle-upper adjusting screw hole. The middle limiting pin sequentially passes through the adjusting-block circular through hole, the middle waist-shaped hole, and the adjusting-block waist-shaped through hole from bottom to top.
[0008] Preferably, for facilitating installation and adjustment operations, there are two pressing-end adjusting screw holes which are respectively located on the opposite side hole walls in the width direction of the pressing-end waist-shaped hole, and the two pressing-end adjusting screws are respectively placed within the two pressing-end adjusting screw holes; there are four middle-lower adjusting screw holes which are evenly distributed on the outer peripheral hole wall of the adjusting-block circular through hole, and the four middle-lower adjusting screws are respectively placed within the four middle-lower adjusting screw holes; there are two middle-upper adjusting screw holes which are respectively located on the opposite side hole walls in the width direction of the adjusting-block waist-shaped through hole, and the two middle-upper adjusting screws are respectively placed within the two middle-upper adjusting screw holes.
[0009] Preferably, in order to be assembled in cooperation with the middle waist-shaped hole on the button and facilitate the installation of two middle lower adjusting screws, the middle lower adjusting block is a strip-shaped block and the length direction thereof is the same as the length direction of the button. The two lower installation through holes are respectively located outside the opposite sides of the circular through hole of the adjusting block and are distributed in the length direction of the middle lower adjusting block. The two lower installation screw holes are respectively located outside the opposite sides in the length direction of the middle waist-shaped hole. The screw rods of the two middle lower installation screws respectively pass through the two lower installation through holes from bottom to top and are connected to the two lower installation screw holes. Transversely penetrating screw through holes are respectively provided on the side hole walls of the two lower installation through holes far away from the circular through hole of the adjusting block.
[0010] Preferably, in order to reduce the vertical gap between the button and the key seat, a sunken groove recessed upward is provided at the position corresponding to the middle lower adjusting block on the lower surface of the middle section of the button, and the middle lower adjusting block is placed in the sunken groove.
[0011] Preferably, in order to be assembled in cooperation with the middle waist-shaped hole on the button, the middle upper adjusting block is a strip-shaped block and the length direction thereof is the same as the length direction of the button. The two upper installation through holes are respectively located outside the opposite sides in the length direction of the waist-shaped through hole of the adjusting block and are distributed in the length direction of the middle upper adjusting block. The two upper installation screw holes are respectively located outside the opposite sides in the length direction of the middle waist-shaped hole. The screw rods of the two middle upper installation screws respectively pass through the two upper installation through holes from top to bottom and are connected to the two upper installation screw holes; the two upper installation screw holes and the two lower installation screw holes are respectively vertically corresponding, and the vertically corresponding upper installation screw hole and lower installation screw hole can be independent of each other or connected into one body.
[0012] Preferably, in order to facilitate the adjustment of the relative positions between the middle lower adjusting block and the button and between the middle upper adjusting block and the button to further improve the adjustment accuracy of relevant parameters, both the lower installation through hole and the upper installation through hole are waist-shaped through holes and the length direction thereof is the same as the length direction of the button.
[0013] Preferably, in order to improve the flexibility of the relative movement between the button and the key seat, a convex platform protruding upward is provided on the upper surface of the middle section of the key seat. A convex strip protruding upward is provided on the upper surface of the convex platform. The length direction of the convex strip is perpendicular to the length direction of the key seat. The lower end of the middle limit pin is located on the convex strip.
[0014] Preferably, in order to improve the wear resistance of the button, the lower middle adjustment block and the upper middle adjustment block to improve the friction life and service life, and at the same time to improve the wear resistance and service life of each adjusting screw and facilitate application, the button is a resin carbon fiber composite button, the lower middle adjustment block and the upper middle adjustment block are both resin carbon fiber composite blocks, the pressing end adjustment screw, the lower middle adjustment screw and the upper middle adjustment screw are all polytetrafluoroethylene screws without nuts and their outer end faces are provided with tool changing grooves.
[0015] The beneficial effects of the utility model are:
[0016] The utility model increases the pressing end adjusting screw, the middle lower adjusting screw, the middle lower adjusting block, the middle upper adjusting screw and the middle upper adjusting block. When maintenance is needed after a period of use, the gap between the pressing end limit pin and the pressing end adjusting screw is reduced by adjusting the pressing end adjusting screw, the gap between the middle limit pin and the middle lower adjusting screw is reduced by adjusting the middle upper adjusting screw, and the gap between the middle limit pin and the middle upper adjusting screw is reduced by adjusting the middle upper adjusting screw. Finally, the purpose of reducing the gap between each limit pin and the corresponding adjusting screw is achieved through each adjusting screw, thereby realizing the fine adjustment function of each parameter of the piano key, reducing the shaking between the key and the key seat and the noise, increasing the damping and improving the feel of playing the piano, realizing high-precision adjustment function without replacing the key, meeting the needs of users, greatly reducing the maintenance cost compared with replacing the entire key, significantly increasing the service life and reducing the difficulty of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the traditional piano keys before assembly, which is a perspective structure;
[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the traditional piano keys after assembly;
[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the long-life piano keys before assembly, which are convenient for accurate multi-dimensional parameter adjustment according to the utility model, and is a perspective structure;
[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the long-life piano keys after assembly, which are convenient for accurate multi-dimensional adjustment of parameters according to the utility model;
[0021] Figure 5 yes Figure 3 Enlarged view of "A". DETAILED DESCRIPTION
[0022] The utility model is further described below in conjunction with the accompanying drawings:
[0023] like Figures 3 - 5As shown in the figure, the long-life key for facilitating accurate multi-dimensional parameter adjustment of the present utility model includes a long-strip-shaped key 10, a long-strip-shaped key seat 1, a pressing-end adjusting screw 25, a middle-lower adjusting screw 21, a middle-lower adjusting block 18, a middle-lower mounting screw 22, a middle-upper adjusting screw 14, a middle-upper adjusting block 12, and a middle-upper mounting screw 11. The horizontal key 10 is located above the horizontal key seat 1. A vertical pressing-end waist-shaped hole 23 is provided at a position on the key 10 near its pressing end (one end of the key 10). The upper end of the pressing-end waist-shaped hole 23 does not penetrate through the upper surface of the key 10. The linkage end (the other end of the key 10) of the key 10 is used to cooperate with a linkage (not shown in the figure). A vertical pressing-end limit pin 9 is provided at a position on the key seat 1 below the pressing-end waist-shaped hole 23. The middle-upper section of the pressing-end limit pin 9 is located within the pressing-end waist-shaped hole 23. A vertically penetrating middle waist-shaped hole 16 is provided in the middle section of the key 10. A vertical middle limit pin 6 is provided on the upper surface of the middle section of the key seat 1. A horizontally penetrating pressing-end adjusting screw hole 24 is provided on the hole wall of the pressing-end waist-shaped hole 23. The pressing-end adjusting screw 25 is placed within the pressing-end adjusting screw hole 24. The middle-lower adjusting block 18 is located between the lower part of the middle section of the key 10 and the upper part of the middle section of the key seat 1. The screw rod of the middle-lower mounting screw 22 passes through the lower mounting through hole 20 (the lower surface is a countersunk hole) on the middle-lower adjusting block 18 from bottom to top and then is connected to the lower mounting screw hole 28 on the lower surface of the middle section of the key 10. A vertically penetrating adjusting block circular through hole 19 is provided on the middle-lower adjusting block 18, and a horizontally penetrating middle-lower adjusting screw hole 29 is provided on the hole wall of the adjusting block circular through hole 19. The middle-lower adjusting screw 21 is placed within the middle-lower adjusting screw hole 29. The middle-upper adjusting block 12 is located above the middle section of the key 10. The screw rod of the middle-upper mounting screw 11 passes through the upper mounting through hole 15 (the upper surface is a countersunk hole) on the middle-upper adjusting block 12 from top to bottom and then is connected to the upper mounting screw hole 27 on the upper surface of the middle section of the key 10. A vertically penetrating adjusting block waist-shaped through hole 13 is provided on the middle-upper adjusting block 12, and a horizontally penetrating middle-upper adjusting screw hole 26 is provided on the hole wall of the adjusting block waist-shaped through hole 13. The middle-upper adjusting screw 14 is placed within the middle-upper adjusting screw hole 26. The middle limit pin 6 passes through the adjusting block circular through hole 19, the middle waist-shaped hole 16, and the adjusting block waist-shaped through hole 13 from bottom to top. Note: The above key is one, and an actual musical instrument such as a piano has multiple keys.
[0024] As Figures 3 - 5 shown, the present utility model also discloses the following various more optimized specific structures:
[0025] For the convenience of installation and adjustment operations, there are two pressing-end adjusting screw holes 24, which are respectively located on the opposite side hole walls in the width direction of the pressing-end waist-shaped hole 23. Two pressing-end adjusting screws 25 are respectively placed in the two pressing-end adjusting screw holes 24; there are four middle-bottom adjusting screw holes 29, which are evenly distributed on the outer peripheral hole wall of the adjusting block circular through hole 19. Four middle-bottom adjusting screws 21 are respectively placed in the four middle-bottom adjusting screw holes 29; there are two middle-top adjusting screw holes 26, which are respectively located on the opposite side hole walls in the width direction of the adjusting block waist-shaped through hole 13. Two middle-top adjusting screws 14 are respectively placed in the two middle-top adjusting screw holes 26.
[0026] In order to be assembled in a matching manner with the middle waist-shaped hole 16 on the key 10 and facilitate the installation of two of the middle-bottom adjusting screws 21, the middle-bottom adjusting block 18 is a strip-shaped block, and its length direction is the same as the length direction of the key 10. Two lower mounting through holes 20 are respectively located on the opposite sides outside the adjusting block circular through hole 19 and are distributed in the length direction of the middle-bottom adjusting block 18. Two lower mounting screw holes 28 are respectively located on the opposite sides outside in the length direction of the middle waist-shaped hole 16. The screw rods of two middle-bottom mounting screws 22 respectively pass through the two lower mounting through holes 20 from bottom to top and are connected to the two lower mounting screw holes 22. Transversely penetrating screw through holes 30 are respectively provided on the side hole walls of the two lower mounting through holes 20 far away from the adjusting block circular through hole 19.
[0027] In order to reduce the vertical gap between the key 10 and the key seat 1, a downwardly concave sinking groove 17 is provided at the position corresponding to the middle-bottom adjusting block 18 on the lower surface of the middle section of the key 10, and the middle-bottom adjusting block 18 is placed in the sinking groove 17.
[0028] In order to be assembled in a matching manner with the middle waist-shaped hole 16 on the key 10, the middle-top adjusting block 12 is a strip-shaped block, and its length direction is the same as the length direction of the key 10. Two upper mounting through holes 15 are respectively located on the opposite sides outside in the length direction of the adjusting block waist-shaped through hole 13 and are distributed in the length direction of the middle-top adjusting block 12. Two upper mounting screw holes 27 are respectively located on the opposite sides outside in the length direction of the middle waist-shaped hole 16. The screw rods of two middle-top mounting screws 11 respectively pass through the two upper mounting through holes 15 from top to bottom and are connected to the two upper mounting screw holes 27; the two upper mounting screw holes 27 and the two lower mounting screw holes 28 are respectively vertically corresponding, and the vertically corresponding upper mounting screw holes 27 and lower mounting screw holes 28 can be independent of each other or connected into one body.
[0029] In order to facilitate the adjustment of the relative positions between the middle-bottom adjusting block 18 and the key 10 and between the middle-top adjusting block 12 and the key 10 to further improve the adjustment accuracy of relevant parameters, both the lower mounting through holes 20 and the upper mounting through holes 15 are waist-shaped through holes, and their length directions are the same as the length direction of the key 10.
[0030] In order to improve the flexibility of relative movement between the key 10 and the key base 1, an upwardly protruding boss 3 is provided on the middle section of the key base 1, and an upwardly protruding convex strip 7 is provided on the boss 3. The length direction of the convex strip 7 is perpendicular to the length direction of the key base 1, and the lower end of the middle limit pin 6 is located on the convex strip 7.
[0031] In order to improve the wear resistance of the button 10, the lower middle adjustment block 18 and the upper middle adjustment block 12 to improve the friction life and service life, and at the same time to improve the wear resistance and service life of each adjustment screw and facilitate application, the button 10 is a resin carbon fiber composite button, the lower middle adjustment block 18 and the upper middle adjustment block 12 are both resin carbon fiber composite blocks, the pressing end adjustment screw 25, the lower middle adjustment screw 21 and the upper middle adjustment screw 14 are all polytetrafluoroethylene screws without nuts and their outer end faces are provided with a tool change groove, and the above-mentioned resin carbon fiber composite material is preferably composed of 85% by mass ABS resin and 15% by mass carbon fiber.
[0032] like Figures 3 - 5 As shown, when playing the piano, the pressing end of the key 10 is pressed by hand, and the linkage end of the key 10 will move upward and lift the linkage (not shown in the figure), and the linkage drives the hammer (not shown in the figure) to hit the string (not shown in the figure) to produce piano sound. When maintenance is required after a period of use, the gap between the pressing end limit pin 9 and the pressing end adjustment screw 25 is reduced by adjusting the pressing end adjustment screw 25, the gap between the middle limit pin 6 and the middle lower adjustment screw 21 is reduced by adjusting the middle lower adjustment screw 21, and the gap between the middle limit pin 6 and the middle upper adjustment screw 14 is reduced by adjusting the middle upper adjustment screw 14, and finally the purpose of reducing the gap between each limit pin and the corresponding adjustment screw is achieved through each adjustment screw, thereby realizing the fine adjustment function of each parameter of the piano key, reducing the shaking between the key 10 and the keybed 1 and reducing the noise, increasing the damping and improving the feel of playing the piano, and realizing the high-precision adjustment function without replacing the key 10, meeting the needs of users, greatly reducing the maintenance cost compared to replacing the entire key 10, and significantly increasing the service life and reducing the difficulty of maintenance.
[0033] Note: The key base 1, boss 3, middle limit pin 6, convex strip 7, pressing end limit pin 9 in the above-mentioned specific implementation manner respectively correspond to the key base 1, boss 3, middle limit pin 6, convex strip 7, pressing end limit pin 9 in the background technology content and have the same structure, so the same marking numbers and component names are used; the key 10, circular through hole 19 of the adjustment block, and waist-shaped hole 23 of the pressing end in the above-mentioned specific implementation manner respectively correspond to the traditional key 2, traditional middle limit circular hole 5, and traditional waist-shaped hole 8 in the background technology content, but the structure has undergone important changes or adaptive changes, so different marking numbers and component names are used; the middle waist-shaped hole 16 and the waist-shaped through hole 13 of the adjustment block in the above-mentioned specific implementation manner correspond to the traditional middle waist-shaped hole 4 in the background technology content after being connected to each other, but the structure has undergone important changes, so different marking numbers and component names are used.
[0034] The above embodiments are only preferred embodiments of the present utility model and are not limitations on the technical solutions of the present utility model. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present utility model.
Claims
1. A long-life piano key that is convenient for accurate multi-dimensional parameter adjustment, comprising a long strip key and a long strip keybed, wherein the horizontal key is located above the horizontal keybed, a vertical pressing end waist-shaped hole is provided on the key near its pressing end, a vertical pressing end limit pin is provided on the keybed below the pressing end waist-shaped hole, the middle and upper sections of the pressing end limit pin are located in the pressing end waist-shaped hole, a vertical through middle waist-shaped hole is provided in the middle section of the key, and a vertical middle limit pin is provided on the middle section of the keybed, characterized in that: The long-life piano key that is convenient for precise multi-dimensional adjustment of parameters also includes a pressing end adjusting screw, a middle lower adjusting screw, a middle lower adjusting block, a middle lower mounting screw, a middle upper adjusting screw, a middle upper adjusting block and a middle upper mounting screw. The hole wall of the pressing end waist-shaped hole is provided with a horizontally penetrating pressing end adjusting screw hole, the pressing end adjusting screw is placed in the pressing end adjusting screw hole, the middle lower adjusting block is located between the lower middle section of the key and the upper middle section of the key seat, the screw rod of the middle lower mounting screw passes through the lower mounting through hole on the middle lower adjusting block from bottom to top and is connected to the lower mounting screw hole below the middle section of the key, the middle lower adjusting block is provided with a vertically penetrating adjusting block circular through hole and the adjusting A transversely penetrating middle lower adjusting screw hole is provided on the hole wall of the circular through hole of the segment block, and the middle lower adjusting screw is placed in the middle lower adjusting screw hole, and the middle upper adjusting block is located above the middle section of the button, and the screw rod of the middle upper mounting screw passes through the upper mounting through hole on the middle upper adjusting block from top to bottom and is connected with the upper mounting screw hole on the middle section of the button, a vertically penetrating adjusting block waist-shaped through hole is provided on the middle upper adjusting block, and a transversely penetrating middle upper adjusting screw hole is provided on the hole wall of the adjusting block waist-shaped through hole, and the middle upper adjusting screw is placed in the middle upper adjusting screw hole, and the middle limit pin passes through the circular through hole of the adjusting block, the middle waist-shaped hole and the waist-shaped through hole of the adjusting block in sequence from bottom to top.
2. The long-life piano key that facilitates accurate multi-dimensional parameter adjustment according to claim 1, characterized in that: There are two adjusting screw holes at the pressing end, which are respectively located on the hole walls on the opposite sides in the width direction of the waist-shaped hole at the pressing end, and the two adjusting screws at the pressing end are respectively placed in the two adjusting screw holes at the pressing end; there are four lower middle adjusting screw holes, which are respectively evenly distributed on the outer peripheral hole walls of the circular through hole of the adjusting block, and the four lower middle adjusting screws are respectively placed in the four lower middle adjusting screw holes; there are two upper middle adjusting screw holes, which are respectively located on the hole walls on the opposite sides in the width direction of the waist-shaped through hole of the adjusting block, and the two upper middle adjusting screws are respectively placed in the two upper middle adjusting screw holes.
3. The long-life piano key that facilitates accurate multi-dimensional parameter adjustment according to claim 2, characterized in that: The middle lower adjustment block is a strip block and its length direction is the same as the length direction of the button. The two lower mounting through holes are respectively located outside the opposite sides of the circular through hole of the adjustment block and are distributed in the length direction of the middle lower adjustment block. The two lower mounting screw holes are respectively located outside the opposite sides of the length direction of the middle waist-shaped hole. The screw rods of the two middle lower mounting screws pass through the two lower mounting through holes from bottom to top and are connected to the two lower mounting screw holes. The two lower mounting through holes are provided with transversely penetrating screw through holes on the side hole wall away from the circular through hole of the adjustment block.
4. The long-life piano key that facilitates accurate multi-dimensional parameter adjustment according to claim 3, characterized in that: A recessed groove that is recessed upwards is provided at a position below the middle section of the button corresponding to the lower middle adjusting block, and the lower middle adjusting block is placed in the recessed groove.
5. The long-life piano key that facilitates accurate multi-dimensional parameter adjustment according to claim 2, characterized in that: The middle upper adjustment block is a bar block and its length direction is the same as the length direction of the button. The two upper mounting through holes are respectively located outside the waist-shaped through hole of the adjustment block on opposite sides in the length direction and are distributed in the length direction of the middle upper adjustment block. The two upper mounting screw holes are respectively located outside the waist-shaped hole in the middle on opposite sides in the length direction. The screw rods of the two middle upper mounting screws pass through the two upper mounting through holes from top to bottom and are connected with the two upper mounting screw holes.
6. The long-life piano key that facilitates accurate multi-dimensional parameter adjustment according to any one of claims 1 to 5, characterized in that: The lower mounting through hole and the upper mounting through hole are both waist-shaped through holes, and the length direction thereof is the same as the length direction of the key.
7. The long-life piano key that facilitates accurate multi-dimensional parameter adjustment according to any one of claims 1 to 5, characterized in that: An upwardly protruding boss is provided on the middle section of the key seat, an upwardly protruding convex strip is provided on the boss, the length direction of the convex strip is perpendicular to the length direction of the key seat, and the lower end of the middle limiting pin is located on the convex strip.
8. The long-life piano key that facilitates accurate multi-dimensional parameter adjustment according to any one of claims 1 to 5, characterized in that: The button is a resin carbon fiber composite material button, the middle lower adjustment block and the middle upper adjustment block are both resin carbon fiber composite material blocks, the pressing end adjustment screw, the middle lower adjustment screw and the middle upper adjustment screw are all polytetrafluoroethylene screws without nuts and their outer end faces are provided with tool changing grooves.