Piano tuning damper

Abstract

An assembly for damping the string sets of a piano, comprising a mounting assembly for mounting to a keybed (1, fig. 1), a mounting housing 6 rotatably mounted on the mounting assembly, and a damping

Description

TECHNICAL FIELD The present invention belongs to the field of piano dampers, and particularly relates to a piano tuning damper. BACKGROUND Regular tuning keeps a piano in good intonation state and timbre, guarantees its performance, and prolongs the service life of the piano. Piano temperament adjustment is a process of performing adjustment tone by tone and string by string, and most of the tones from middle and treble registers of the piano are produced by unison string sets each consisting of three strings. During temperament adjustment, it is necessary to damp the strings that do not need to be adjusted at a given moment, preventing them from producing unnecessary sounds, so as not to interfere with the tones of the string that is being adjusted and affect hearing perception during temperament adjustment. In the prior art, the unison string sets are damped with a damping tape which is mainly inserted into a spacing between one unison string set and another unison string set. The damping tape should not be inserted too tightly or too loosely in a string column, but should be inserted moderately. If inserted too tightly, the strings may be excessively squeezed and affects the already tuned pitch; and if inserted too loosely, the damping tape may fall off the string column when the strings are struck. Therefore, the force applied for inserting the damping tape should be moderate, based on a level that the strings will not fall off for a while after being struck. Tuning staff need to manually fold the damping tape and insert the same into the spacing between one unison string set and another unison string set on the string column. In actual operations, the thickness of the folded damping tape cannot be guaranteed to be fully consistent, the situation that the damping tape is inserted too tightly or too loosely still exists, and the whole process of mounting the damping tape is time-consuming and laborious. During the tuning process, there is also the process of repeatedly inserting the damping tape into the spacing between one unison string set and another unison string set. In addition, during tuning, only the middle string of the same unison string set can be tuned first. Based on this, further improvements are needed for damping methods or tools of piano tuning. SUMMARY A purpose of the present invention is to propose a piano tuning damper, for solving problems in 1 the prior art that a mounting process of damping tapes is tedious, operations are time-consuming and laborious, and tension of strings is poorly controlled during piano tuning. To achieve the above purpose, the present invention adopts the following technical solution: a piano tuning damper, including a mounting assembly, a mounting housing, and a damping mechanism, where the mounting assembly is detachably mountable on a keybed of a piano, the mounting housing is rotatably disposed on the mounting assembly, the damping mechanism is disposed on the mounting housing, the damping mechanism includes a plurality of damping units is arranged to be in one-to-one correspondence with unison string sets and a trigger member, each damping unit includes a first damping claw, a second damping claw, and a third damping claw, the first damping claw, the second damping claw, and the third damping claw extend out from a rectangular hole formed at a lower end of the mounting housing, the first damping claw, the second damping claw, and the third damping claw are arranged to be in one-to-one correspondence with a primary string, a middle string, and a secondary string in each unison string set, the first damping claw is configured to perform damping on the primary string in the unison string set, the second damping claw is configured to perform damping on the middle string in the unison string set, the third damping claw is configured to perform damping on the secondary string in the unison string set, each damping unit further includes two first adjustment mechanisms and a second adjustment mechanism, one of the first adjustment mechanisms is configured to adjust the first damping claw, the other one of the first adjustment mechanisms is configured to adjust the third damping claw, and the second adjustment mechanism is configured to adjust the second damping claw; when the trigger member drives the first adjustment mechanism corresponding to the first damping claw, the first adjustment mechanism enables the first damping claw to release the damping of the primary string; when the trigger member drives the first adjustment mechanism corresponding to the third damping claw, the first adjustment mechanism enables the third damping claw to release the damping of the secondary string; and when the trigger member drives the second adjustment mechanism, the second adjustment mechanism enables the second damping claw to release the damping of the middle string. As a further description of the above technical solution: the mounting assembly includes an outer clamping plate and an inner clamping plate, a sliding shaft is disposed on the inner clamping plate, an end portion of the mounting housing is provided with a first sliding base, the first sliding base is slidably disposed on the sliding shaft, a guiding shaft is disposed on the outer clamping plate, 2 the inner clamping plate is slidably disposed on the guiding shaft, an end portion of the guiding shaft, away from the outer clamping plate, is provided with a limiting end head, a first spring is sleeved on the guiding shaft, the first spring is located between the limiting end head and the inner clamping plate, a first adjustment bolt is fixedly disposed on the inner clamping plate, the first adjustment bolt is disposed on the outer clamping plate in a penetrating manner, an adjustment nut is disposed on the first adjustment bolt in a threaded manner, an end surface of the adjustment nut is in contact with an outer side surface of the outer clamping plate, and the outer clamping plate and the inner clamping plate are configured to be clamped onto a reinforcing rib of the keybed of the piano. As a further description of the above technical solution: one end of the mounting housing, away from the mounting assembly, is provided with a second sliding base, a second adjustment bolt is disposed on the second sliding base in a threaded fit manner, a magnetic suction head is disposed at a lower end of the second adjustment bolt, and the magnetic suction head is configured to be attracted onto the keybed of the piano. As a further description of the above technical solution: the first damping claw includes a connecting portion, a damping portion, and an adaptive trigger portion, the damping portion is a semi-arc plate, the connecting portion, the damping portion, and the adaptive trigger portion are sequentially and smoothly connected to form a "W" shape as a whole, the first damping claw has a same structure as the third damping claw, mounting plates in one-to-one correspondence with the damping units are disposed in the mounting housing, the first damping claw, the second damping claw, and the third damping claw are disposed on the mounting plate, an upper end of the connecting portion of the first damping claw is disposed on a lower surface of the mounting plate in a spherical joint manner, two mounting rods are disposed below the mounting plate, one of the mounting rods is located between the second damping claw and the first damping claw, the other one of the mounting rods is located between the second damping claw and the third damping claw, a tension spring is disposed between a lower end of the mounting rod and a lower end of the connecting portion, the second damping claw includes a damping press head and a telescopic rod, a sliding tube is disposed on the lower surface of the mounting plate, an upper end of the telescopic rod is slidably disposed in the sliding tube, the damping press head is fixedly disposed at a lower end of the telescopic rod, and a second spring is disposed in the sliding tube. As a further description of the above technical solution: a damping cushion layer made of a felt 3 material is disposed at the damping portion and the damping press head, respectively. As a further description of the above technical solution: the first adjustment mechanism includes an adjustment rod, a trigger plate, and a driving head, the adjustment rod is sidably disposed on the mounting plate in a penetrating manner, the driving head is fixedly disposed at a lower end of the adjustment rod, the driving head corresponds to the connecting portion, the trigger plate is fixedly disposed at an upper end of the adjustment rod, a third spring is sleeved on the adjustment rod, the third spring is located between the trigger plate and the mounting plate, a blocking ring is further disposed on the adjustment rod, the blocking ring is disposed below the mounting plate, and the trigger member corresponds to the trigger plate. As a further description of the above technical solution: the second adjustment mechanism differs from the first adjustment mechanisms in that a driving fork is disposed at a lower end of the adjustment rod of the second adjustment mechanism, a support rod is disposed below the mounting plate, an end portion of the driving fork is rotatably disposed at the lower end of the adjustment rod, a driving shaft is disposed on the telescopic rod, the driving fork is provided with a waist-shaped hole, a lever is disposed at a lower end of the support rod, and both the lever and the driving shaft are disposed in the waist-shaped hole. As a further description of the above technical solution: a support plate is disposed in the mounting housing, the support plate is disposed in a length direction of the mounting housing, the mounting plate is slidably disposed below the support plate, the support plate is provided with an avoidance moving hole, the adjustment rod penetrates into the avoidance moving hole, fin plates are disposed at four corners of the mounting plate, the support plate is provided with a sliding hole, the fin plates slide in the sliding hole, and an elastic piece is disposed between two adjacent mounting plates. As a further description of the above technical solution: the mounting housing is provided with an elongated hole, the trigger member is slidably disposed in the elongated hole, the elongated hole is located above the trigger plate, a connecting flange is disposed on the mounting housing, a toggle sliding block is slidably disposed on the mounting housing, the toggle sliding block is snap-fitted with the connecting flange, the trigger member is disposed on a lower surface of the toggle sliding block, the trigger member is an inverted trapezoidal block, and the trigger member corresponds to the trigger plate. In summary, by adopting the above technical solution, the present invention has the following beneficial effects: (1) The piano tuning damper provided by the present application can perform damping on all unison string sets quickly and accurately, is convenient, fast, and accurate in mounting process, has high efficiency, and exerts uniform damping force to each string. (2) Due to the action of nuts on the keybed, all strings are located in the same plane and the strings of the same unison string set are parallel to each other, whereas various unison string sets cannot be guaranteed to be parallel to each other, so that the first damping claw and the third damping claw that are connected in a spherical joint manner can rotate adaptively to adapt to two unison string sets with an included angle. (3) The mounting plates slidably disposed on the support plate can automatically adapt to the spacing between two unison string sets under the action of the adaptive trigger portion, making it possible to ensure adaptive and accurate damping of all the strings during mounting. (4) Since there is an included angle between adjacent unison string sets, the mounting housing rotatably disposed on the mounting assembly can be rotated to ensure that included angles between the mounting housing and all the unison string sets are as close to a vertical state as possible, and the problems that the mounting housing is vertical to a certain unison string set while having too small included angles with other unison string sets, making the damping units fail to perform well damping on corresponding unison string sets can be avoided. BRIEF DESCRIPTION OF DRAWINGS FIG. lisa front view of a state-of-use diagram of the present invention; FIG. 2 is a stereostructural schematic diagram of the present invention, in which a keybed of a piano is not shown, but unison string sets are shown; FIG. 3 is a partial sectional state diagram of a stereostructural schematic diagram of the present invention; FIG. 4 is an enlarged view at A in FIG. 3; FIG. 5 is a stereostructural schematic diagram of a toggle sliding block and a trigger member of the present invention; FIG. 6 is a front view of a damping unit of the present invention; FIG. 7 is a side view of a damping unit of the present invention; and 5 FIG. 8 is a stereostructural schematic diagram of a damping unit of the present invention. Illustrations: 1. keybed; 2. reinforcing rib; 3. primary string; 4. middle string; 5. secondary string; 6. mounting housing; 7. first sliding base; 8. second sliding base; 9. elongated hole; 10. third spring; 11. support plate; 12. mounting plate; 13. avoidance moving hole; 14. fin plate; 15. sliding shaft; 16. outer clamping plate; 17. inner clamping plate; 18.guiding shaft; 19. limiting end head; 20. first spring; 21. first adjustment bolt; 22. adjustment nut; 23. second adjustment bolt; 24. magnetic suction head; 25. damping unit; 26. trigger member; 27. first damping claw; 28. second damping claw; 29. third damping claw; 30. connecting portion; 31. damping portion; 32. adaptive trigger portion; 33. damping press head; 34. telescopic rod; 35. damping cushion layer; 36. mounting rod; 37. tension spring; 38. sliding tube; 39. adjustment rod; 40. trigger plate; 41. driving head; 42. blocking ring; 43. driving fork; 44. support rod; 45. driving shaft; 46. waist-shaped hole; 47. lever; 48. toggle sliding block. DETAILED DESCRIPTION OF EMBODIMENTS The technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Apparently, the embodiments described are merely some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative labor shall fall within the scope of protection of the present invention. Referring to FIG. 1 to FIG. 8, the present invention provides a technical solution of a piano tuning damper: A piano tuning damper, including a mounting assembly, a mounting housing 6, and a damping mechanism, where the mounting housing 6 is a rectangular tube made of a stainless steel material, two ends of the mounting housing are provided with a sealed end cover, respectively, one end of the mounting housing 6 is provided with a first sliding base 7, the other end thereof is provided with a second sliding base 8, an upper end of the mounting housing 6 is provided with an elongated hole 9, front and rear edges of an upper surface of the mounting housing 6 are provided with connecting flanges in a length direction of the mounting housing, a lower end of the mounting housing 6 is provided with a rectangular hole, a support plate 11 is disposed in the mounting housing 6, the support plate 11 is disposed in a length direction of the mounting housing 6, a plurality of mounting 6 plates 12 are slidably disposed below the support plate 11, the support plate 11 is provided with an avoidance moving hole 13, fin plates 14 are disposed at four corners of the mounting plate 12, the support plate 11 is provided with a sliding hole, the fin plates 14 slide in the sliding hole, and an elastic piece is disposed between two adjacent mounting plates 12. The mounting housing 6 is rotatably disposed on the mounting assembly, the mounting assembly is detachably mounted on a keybed 1 of a piano, the mounting assembly includes an outer clamping plate 16 and an inner clamping plate 17, a sliding shaft 15 is disposed on the inner clamping plate 17, the first sliding base 7 is slidably disposed on the sliding shaft 15, a guiding shaft 18 is disposed on the outer clamping plate 16, the inner clamping plate 17 is slidably disposed on the guiding shaft 18, an end portion of the guiding shaft 18, away from the outer clamping plate 16, is provided with a limiting end head 19, a first spring 20 is sleeved on the guiding shaft 18, the first spring 20 is located between the limiting end head 19 and the inner clamping plate 17, a first adjustment bolt 21 is fixedly disposed on the inner clamping plate 17, the first adjustment bolt 21 is disposed on the outer clamping plate 16 in a penetrating manner, an adjustment nut 22 is disposed on the first adjustment bolt 21 in a threaded manner, an end surface of the adjustment nut 22 is in contact with an outer side surface of the outer clamping plate 16, and the outer clamping plate 16 and the inner clamping plate 17 are configured to be clamped onto a reinforcing rib 2 of the keybed 1 of the piano. A second adjustment bolt 23 is disposed on the second sliding base 8 in a threaded fit manner, a magnetic suction head 24 is disposed at a lower end of the second adjustment bolt 23, and the magnetic suction head 24 is configured to be attracted onto the keybed 1 of the piano. The damping mechanism is disposed on the mounting housing 6, the damping mechanism includes a plurality of damping units 25 in one-to-one correspondence with the unison string sets and a trigger member 26, the damping units 25 are in one-to-one correspondence with the mounting plates 12, each damping unit 25 includes a first damping claw 27, a second damping claw 28, and a third damping claw 29, the first damping claw 27, the second damping claw 28, and the third damping claw 29 are disposed on the mounting plate 12, the first damping claw 27, the second damping claw 28, and the third damping claw 29 extend out from a rectangular hole formed at a lower end of the mounting housing 6, the first damping claw 27, the second damping claw 28, and the third damping claw 29 are in one-to-one correspondence with a primary string 3, a middle string 4, and a secondary string 5 in each unison string set, the first damping claw 27 is configured to 7 perform damping on the primary string 3 in the unison string set, the second damping claw 28 is configured to perform damping on the middle string 4 in the unison string set, and the third damping claw 29 is configured to perform damping on the secondary string 5 in the unison string set. The first damping claw 27 has a same structure as the third damping claw 29, the first damping claw 27 includes a connecting portion 30, a damping portion 31, and an adaptive trigger portion 32, the damping portion 31 is a semi-arc plate, the connecting portion 30, the damping portion 31, and the adaptive trigger portion 32 are sequentially and smoothly connected to form a "W" shape as a whole, the second damping claw 28 includes a damping press head 33 and a telescopic rod 34, and a damping cushion layer 35 made of a felt material is disposed at the damping portion 31 and the damping press head 33, respectively. An upper end of the connecting portion (30) of the first damping claw (27) is disposed on a lower surface of the mounting plate (12) in a spherical joint manner, two mounting rods (36) are disposed below the mounting plate (12), one of the mounting rods (36) is located between the second damping claw (28) and the first damping claw (27), the other one of the mounting rods (36) is located between the second damping claw (28) and the third damping claw (29), a tension spring (37) is disposed between a lower end of the mounting rod (36) and a lower end of the connecting portion (30), a sliding tube (38) is disposed on the lower surface of the mounting plate (12), an upper end of the telescopic rod (34) is slidably disposed in the sliding tube (38), the damping press head (33) is fixedly disposed at a lower end of the telescopic rod (34), and a second spring is disposed in the sliding tube (38). Each damping unit 25 further includes two first adjustment mechanisms and a second adjustment mechanism, one of the first adjustment mechanisms is configured to adjust the first damping claw 27, the other one of the first adjustment mechanisms is configured to adjust the third damping claw 29, and the second adjustment mechanism is configured to adjust the second damping claw 28; the first adjustment mechanism includes an adjustment rod 39, a trigger plate 40, and a driving head 41, the adjustment rod 39 is sidably disposed on the mounting plate 12 in a penetrating manner, the adjustment rod 39 is penetrated into the avoidance moving hole 13, the driving head 41 is fixedly disposed at a lower end of the adjustment rod 39, the driving head 41 corresponds to the connecting portion 30, the trigger plate 40 is fixedly disposed at an upper end of the adjustment rod 39, a third spring 10 is sleeved on the adjustment rod 39, the third spring 10 is located between the 8 trigger plate 40 and the support plate 11, a blocking ring 42 is further disposed on the adjustment rod 39, the blocking ring 42 is disposed below the mounting plate 12, and the trigger member 26 corresponds to the trigger plate 40. The second adjustment mechanism differs from the first adjustment mechanisms in that a driving fork 43 is disposed at a lower end of the adjustment rod 39 of the second adjustment mechanism, a support rod 44 is disposed below the mounting plate 12, an end portion of the driving fork 43 is rotatably disposed at the lower end of the adjustment rod 39, a driving shaft 45 is disposed on the telescopic rod 34, the driving fork 43 is provided with a waist-shaped hole 46, a lever 47 is disposed at a lower end of the support rod 44, and both the lever 47 and the driving shaft 45 are disposed in the waist-shaped hole 46. A toggle sliding block 48 is slidably disposed on the mounting housing 6, the toggle sliding block 48 is snap-fitted with the connecting flange, the trigger member 26 is disposed on a lower surface of the toggle sliding block 48, the trigger member 26 is an inverted trapezoidal block, and the trigger member 26 corresponds to the trigger plate 40. When the trigger member 26 drives the first adjustment mechanism corresponding to the first damping claw 27, the first adjustment mechanism enables the first damping claw 27 to release the damping of the primary string 3, when the trigger member 26 drives the first adjustment mechanism corresponding to the third damping claw 29, the first adjustment mechanism enables the third damping claw 29 to release the damping of the secondary string 5, and when the trigger member 26 drives the second adjustment mechanism, the second adjustment mechanism enables the second damping claw 28 to release the damping of the middle string 4. Operating principles: when the piano is tuned, the damper provided by the present application is first mounted on the keybed 1 of the piano, allowing all the damping units 25 to simultaneously complete the damping of the unison string sets corresponding thereto. First, the toggle sliding block 48 drives the trigger member 26 to slide as a whole to the rightmost end of mounting housing 6, then a gap between the inner clamping plate 17 and the outer clamping plate 16 is enabled to be aligned with the reinforcing rib 2 of the keybed 1, and then pressing is performed towards the keybed 1. In this process, the first spring 20 is compressed, and then the inner clamping plate 17 and the outer clamping plate 16 are locked by the first adjustment bolt 21. Then, the second adjustment bolt 23 is adjusted, so that the mounting housing 6 moves as a whole towards the keybed 1 and the unison string sets. When the damping unit 25 is not in contact with the unison string set, the first damping 9 claw 27 and the third damping claw 29 move closer to each other under the action of the tension spring 37. After the adaptive trigger portion 32 of the first damping claw 27 and the third damping claw 29 comes into contact with the primary string 3 and the secondary string 5, the first damping claw 27 and the third damping claw 29 move away from each other. Subsequently, during this process, the first damping claw 27 and the third damping claw 29 move closer to each other again, allowing the primary string 3 and the secondary string 5 to enter the damping portion 31. At this point, the damping press head 33 of the second damping claw 28 also presses against the middle string 4, so as to complete the damping of all unison string sets. When tuning, the toggle sliding block 48 is moved, enabling the trigger member 26 on the toggle sliding block 48 to sequentially drive the adjustment rod 39 corresponding to each unison string set, so that the third spring 10 is compressed, thus sequentially driving: the damping of the primary string 3 performed by the first damping claw 27, specifically, the trigger member 26 presses down the trigger plate 40, the driving head 41 corresponding to the first damping claw 27 drives the first damping claw to rotate, enabling the damping portion 31 of the first damping claw to move away from the primary string 3; the damping of the middle string 4 performed by the second damping claw 28, specifically, the trigger member 26 presses down the trigger plate 40, the adjustment rod 39 corresponding to the second damping claw 28 moves downwards, driving the driving fork 43 to rotate and lift up the telescopic rod 34, the second spring is compressed, and the damping press head 33 moves away from the middle string 4; and the damping of the secondary string 5 performed by the third damping claw 29, specifically, the trigger member 26 presses down the trigger plate 40, the driving head 41 corresponding to the third damping claw 29 drives the third damping claw 29 to rotate, enabling the damping portion 31 of the third damping claw to move away from the secondary string 5. When tuning, all the unison string sets are tuned sequentially from right to left based on an order that the primary string 3 is first tuned, the middle string 4 is then tuned, and the secondary string 5 is finally tuned. After completing the tuning, the mounting assembly is enabled to release the clamping of the reinforcing rib 2 of the keybed 1, and the damper provided by the present application is removed as a whole. The above is only preferred specific implementations of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitution or modification io made by those skilled in the art within the technical scope disclosed by the present invention and in accordance with the technical solution of the present invention and inventive concepts thereof shall be covered within the scope of protection of the present invention. 11

Claims

1. A piano tuning damper, comprising a mounting assembly, a mounting housing (6), and a damping mechanism, wherein the mounting assembly is detachably mountable on a keybed (1) of a piano, the mounting housing (6) is rotatably disposed on the mounting assembly, and the damping mechanism is disposed on the mounting housing (6); the damping mechanism comprises a plurality of damping units (25) and a trigger member (26), and each damping unit (25) is arranged to be in one-to-one correspondence with a corresponding unison string set of the piano, each damping unit (25) comprises a first damping claw (27), a second damping claw (28), and a third damping claw (29); the first damping claw (27), the second damping claw (28), and the third damping claw (29) are arranged to be in one-to-one correspondence with a primary string (3), a middle string (4), and a secondary string (5) in the unison string set; the trigger member (26) is disposed on, and slidably movable along, the mounting housing (6) from one side of the piano to the other side; when the mounting assembly is mountable on the keybed (1) of the piano, all damping units (25) are arranged to simultaneously complete damping of all string sets in which the first, second and third damping claws (27, 28, 29) in the damping units (25) are arranged to contact respective primary, middle and secondary strings (3, 4, 5); wherein the trigger member (26) is driven to move along the mounting housing (6), where the trigger member (26) is arranged to sequentially release the damping of the primary string (3) performed by the first damping claw (27), the damping of the secondary string (5) performed by the third damping claw (29), and the damping of the middle string (4) performed by the second damping claw (28) in each unison string set; and the trigger member (26) is arranged to move from one side of the piano to the other side to sequentially release the damping of all the string sets; wherein each damping unit (25) further comprises two first adjustment mechanisms and a second adjustment mechanism, wherein one of the first adjustment mechanisms is configured to adjust the first damping claw (27), the other one of the first adjustment mechanisms is configured to adjust the third damping claw (29), and the second adjustment mechanism is configured to adjust the second damping claw (28); when the trigger member (26) drives the first adjustment mechanism corresponding to the first damping claw (27), the first adjustment mechanism enables the first damping claw (27) to release the damping of the primary string (3), when the trigger member (26) drives the first adjustment mechanism corresponding to the third damping claw (29), the first adjustment mechanism enables the third damping claw (29) to release the damping of the secondary string (5), and when the triggermember (26) drives the second adjustment mechanism, the second adjustment mechanism enables the second damping claw (28) to release the damping of the middle string (4).

2. The piano tuning damper according to claim 1, wherein the mounting assembly comprises an outer clamping plate (16) and an inner clamping plate (17), a sliding shaft (15) is disposed on the inner clamping plate (17), an end portion of the mounting housing (6) is provided with a first sliding base (7), the first sliding base (7) is slidably disposed on the sliding shaft (15), a guiding shaft (18) is disposed on the outer clamping plate (16), the inner clamping plate (17) is slidably disposed on the guiding shaft (18); an end portion of the guiding shaft (18), away from the outer clamping plate (16), is provided with a limiting end head (19); a first spring (20) is sleeved on the guiding shaft (18), and wherein the first spring (20) is located between the limiting end head (19) and the inner clamping plate (17); a first adjustment bolt (21) is fixedly disposed on the inner clamping plate (17), the first adjustment bolt (21) is disposed on the outer clamping plate (16) in a penetrating manner; an adjustment nut (22) is disposed on the first adjustment bolt (21) in a threaded manner, an end surface of the adjustment nut (22) is in contact with an outer side surface of the outer clamping plate (16), and the outer clamping plate (16) and the inner clamping plate (17) are configured to be clamped onto a reinforcing rib (2) of the keybed (1) of the piano.

3. The piano tuning damper according to claim 2, wherein one end of the mounting housing (6), away from the mounting assembly, is provided with a second sliding base (8); a second adjustment bolt (23) is disposed on the second sliding base (8) in a threaded fit manner, a magnetic suction head (24) is disposed at a lower end of the second adjustment bolt (23), and the magnetic suction head (24) is configured to be attracted onto the keybed (1) of the piano.

4. The piano tuning damper according to claim 1, wherein the first damping claw (27) comprises of a connecting portion (30), a damping portion (31), and an adaptive trigger portion (32); the damping portion (31) is a semi-arc plate; the connecting portion (30), the damping portion (31), and the adaptive trigger portion (32) are sequentially and smoothly connected to form a "W" shape as a whole, the first damping claw (27) has a same structure as the third damping claw (29), mounting plates (12) in one-to-one correspondence with the damping units (25) are disposed in the mounting housing (6), the first damping claw (27), the second damping claw (28), and the third damping claw (29) are disposed on the mounting plate (12); an upper end of the connecting portion (30) of the first damping claw (27) is disposed on a lower surface of the mounting plate (12) in a spherical jointmanner; two mounting rods (36) are disposed below the mounting plate (12), wherein one of the mounting rods (36) is located between the second damping claw (28) and the first damping claw (27), the other one of the mounting rods (36) is located between the second damping claw (28) and the third damping claw (29); a tension spring (37) is disposed between a lower end of the mounting rod (36) and a lower end of the connecting portion (30); the second damping claw (28) comprises a damping press head (33) and a telescopic rod (34); a sliding tube (38) is disposed on the lower surface of the mounting plate (12), wherein an upper end of the telescopic rod (34) is slidably disposed in the sliding tube (38); the damping press head (33) is fixedly disposed at a lower end of the telescopic rod (34), and a second spring is disposed in the sliding tube (38).

5. The piano tuning damper according to claim 4, wherein a damping cushion layer (35) made of a felt material is disposed at the damping portion (31) and the damping press head (33), respectively.

6. The piano tuning damper according to claim 4, wherein the first adjustment mechanism comprises an adjustment rod (39), a trigger plate (40), and a driving head (41); the adjustment rod (39) is sidably disposed on the mounting plate (12) in a penetrating manner; the driving head (41) is fixedly disposed at a lower end of the adjustment rod (39); the driving head (41) corresponds to the connecting portion (30); the trigger plate (40) is fixedly disposed at an upper end of the adjustment rod (39); a third spring (10) is sleeved on the adjustment rod (39), and the third spring (10) is located between the trigger plate (40) and the mounting plate (12); a blocking ring (42) is further disposed on the adjustment rod (39), and the blocking ring (42) is disposed below the mounting plate (12); and the trigger member (26) corresponds to the trigger plate (40).

7. The piano tuning damper according to claim 6, wherein the second adjustment mechanism differs from the first adjustment mechanisms in that a driving fork (43) is disposed at a lower end of the adjustment rod (39) of the second adjustment mechanism; a support rod (44) is disposed below the mounting plate (12); an end portion of the driving fork (43) is rotatably disposed at the lower end of the adjustment rod (39); a driving shaft (45) is disposed on the telescopic rod (34); the driving fork (43) is provided with a waist-shaped hole (46); a lever (47) is disposed at a lower end of the support rod (44), and both the lever (47) and the driving shaft (45) are disposed in the waist-shaped hole (46).

8. The piano tuning damper according to claim 6, wherein a support plate (11) is disposed in the mounting housing (6), wherein the support plate (11) is disposed in a length direction of the mounting housing (6); the mounting plate (12) is slidably disposed below the support plate (11), andthe support plate (11) is provided with an avoidance moving hole (13); the adjustment rod (39) penetrates into the avoidance moving hole (13); fin plates (14) are disposed at four corners of the mounting plate (12); the support plate (11) is provided with a sliding hole, wherein the fin plates (14) slide in the sliding hole, and an elastic piece is disposed between two adjacent mounting plates (12).

9. The piano tuning damper according to claim 6, wherein that the mounting housing (6) is provided with an elongated hole (9), and the trigger member (26) is slidably disposed in the elongated hole (9); the elongated hole (9) is located above the trigger plate (40); a connecting flange is disposed on the mounting housing (6); a toggle sliding block (48) is slidably disposed on the mounting housing (6), and the toggle sliding block (48) is snap-fitted with the connecting flange; the trigger member (26) is disposed on a lower surface of the toggle sliding block (48), and wherein the trigger member (26) is an inverted trapezoidal block, and the trigger member (26) corresponds to the trigger plate (40).IntellectualPropertyOfficeApplication GB2502519.8Search report under Section 17 of the Patents Act 1977Date search completed: 08 July 2025Claims searched: 1-10International classificationSubclass and subgroup Valid from G10C3 / 00 01 / 01 / 2019 G10C3 / 10 01 / 01 / 2019 G10C3 / 166 01 / 01 / 2019 G10C9 / 00 01 / 01 / 2019Field of searchWorldwide search of patent documents classified in the following areas of the IPC:G10C, G10D, G10G, Y10SDatabases used in the preparation of this search report:INTERNET; SEARCH-PATENTDocuments considered to be relevantPatent literatureCategory Relevant Document of relevanceclaimsIntellectual Property Office is an operating name of the Patent Officewww.gov.uk / ipoA - US 3183761 ACLAUDE P VAN OOYEN, see whole documentA - US 2019 / 0272808 A1 KK KAWAI GAKKI SEISAKUSHO, see whole document A - US 5467679 A SCHMIDT, see whole documentCategoriesLetter or DescriptionsymbolX Document indicating lack of novelty or inventive step.Y Document indicating lack of inventive step, if combined with anotherdocument of the same category.& Member of the same patent family. A Document indicating technological background. P Document published on or after the priority date but before the fling date of the present application.EEarlier application published on or after the filing date of the present application.

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