String striking machine structure of vertical piano

Abstract

The utility model discloses a string striking machine structure of a vertical piano, which comprises a key unit, a linkage device assembly, a sound making module and a string striking assembly which are arranged on a piano frame, the linkage device assembly is in transmission connection with the string striking assembly through a transmission mechanism, and the key unit is in linkage fit with the linkage device assembly. The string striking assembly is driven to be relatively close to or far away from the string; the piano key unit comprises a key rod with the middle portion rotationally arranged on the piano frame, the key rod comprises a pressing end and a jacking end, the jacking end is fixedly provided with a staple bolt column, the linkage device assembly comprises a linkage rod rotationally arranged on the piano frame and an adjusting block arranged on the linkage rod, and a height adjusting mechanism is arranged between the adjusting block and the linkage rod. The height adjusting mechanism is used for adjusting the distance height between the adjusting block and the linkage rod. The sound production and sound production response are rapid, and the noise is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of piano parts, in particular to an action structure of an upright piano. Background Art

[0002] Because the piano has a unique wide range of tones, beautiful timbre and unique playing performance, it is deeply loved by music lovers. With the development of society, the market demand for upright pianos is increasing. The hammer action is the core playing mechanism of each piano that produces the string movement. The player makes the piano produce different melodies by playing the keyboard connected to the hammer action.

[0003] The existing Chinese patent with the announcement number CN200947342Y discloses a double-action string mechanism for an upright piano, including a hammer assembly, a jack device, a connecting rod assembly, a tuning, and a back stop. The hammer assembly includes a turner, a hoe, a hammer, and a hammer handle. The connecting rod assembly includes a linkage lever and a stopper. The jack device includes a jack and a jack protrusion. The jack and the hammer assembly's turner have a mutually attractive magnetic device. A pad is provided next to the jack device to limit the movement of the jack device. By pressing the key, the pin is lifted and hits the linkage lever to rotate, thereby driving the hammer to hit the string to produce sound.

[0004] However, the above-mentioned upright piano has the following disadvantages: like most upright pianos on the market, the sound is generated by pressing the key and using the lever principle to drive the pin at the other end to push up and drive the linkage lever to rotate, thereby driving the hammer to strike the string. The impact distance between the pin and the linkage lever cannot be adjusted. When the rotation center of the key, the rotation center of the linkage lever, and the impact point of the pin and the linkage lever are not on the same plane, the key travel in the process of pressing the key to achieve the sound of the string will become longer, and the purpose of quickly feedback from pressing the key to the hammer hitting the string to produce sound cannot be achieved. In addition, noise is easily generated when receiving the sound, which urgently needs to be improved. Utility Model Content

[0005] The utility model aims to provide an action structure of an upright piano, which has the effects of rapid sounding and damping responses and effective reduction of noise.

[0006] The above-mentioned technical purpose of the present utility model is achieved through the following technical solutions: A string-acting mechanism structure of an upright piano, including a key unit, a linkage assembly, a sound-damping module and a string-acting assembly arranged on a piano frame, the linkage assembly and the string-acting assembly are connected by a transmission mechanism, the key unit and the linkage assembly cooperate with each other to drive the string-acting assembly and the string-acting assembly to be relatively close to or away from the strings, the key unit includes a key rod whose middle part is rotatably arranged on the piano frame, the key rod includes a pressing end and a lifting end, and the lifting end is fixed with a pin column, the linkage assembly includes a linkage rod rotatably arranged on the piano frame and an adjustment block arranged on the linkage rod, a height adjustment mechanism is provided between the adjustment block and the linkage rod, and the height adjustment mechanism is used to adjust the spacing height between the adjustment block and the linkage rod.

[0007] By adopting the above technical solution, the height adjustment mechanism can be used to manually adjust the distance between the linkage rod and the adjustment block during assembly, so that when the piano is in a stationary state, the rotation center of the key unit, the rotation center of the linkage rod, and the impact point between the key unit and the linkage rod are adjusted to the same plane, so that the key unit is in the shortest pressing stroke position, and finally the string striking assembly can strike the strings in the shortest time when the key unit is pressed. In addition, when the key unit is lifted, the damper module can quickly dampen the strings, preventing the damper module from failing to respond quickly and pressing the strings to generate residual noise when the key unit is lifted. The piano has the effect of rapid sound production and damping response and effectively reducing noise generation.

[0008] The present invention is further configured as follows: the height adjustment mechanism includes an adjustment bolt threadedly connected to the linkage rod; the adjustment block is adapted to open a first threaded hole corresponding to the adjustment bolt; and the adjustment bolt is threadedly engaged with the first threaded hole.

[0009] By adopting the above technical solution, the adjusting block can be driven relatively closer to or farther away from the linkage rod by screwing the adjusting bolt, thereby achieving adjustment of the distance between the adjusting block and the linkage rod.

[0010] The present invention is further configured as follows: an anti-dropout piece is installed at the end of the adjusting bolt, and the adjusting bolt is anti-dropout matched with the adjusting block through the anti-dropout piece.

[0011] By adopting the above technical solution, the anti-slip component can effectively prevent the adjusting bolt from being separated from the adjusting block during the screwing adjustment process.

[0012] The present invention is further configured as follows: the anti-slip component includes an anti-slip portion and a threaded connection portion; the end of the adjusting bolt is provided with a second threaded hole corresponding to the threaded connection portion; and the threaded connection portion is threadedly connected to the second threaded hole.

[0013] By adopting the above technical solution, the anti-slip component is detachably connected to the adjusting bolt by means of a threaded connection, thereby facilitating the disassembly, assembly and replacement of the adjusting bolt on the linkage rod and the adjusting block.

[0014] The present invention is further configured such that the first threaded hole and the second threaded hole have opposite thread rotation directions.

[0015] The present invention is further configured as follows: a guide structure is provided between the adjustment block and the linkage rod, and the adjustment block is guided to rise and fall relative to the linkage rod by the guide structure.

[0016] By adopting the above technical solution, the setting of the guide structure makes the adjustment block relatively fixed relative to the linkage rod when the adjustment bolt is screwed, so that the adjustment block can only move up and down relative to the linkage rod when the adjustment bolt is screwed.

[0017] The present invention is further configured as follows: the guide structure includes a guide column integrally provided on the adjustment block; the linkage rod is provided with a guide hole corresponding to the guide column; the guide column is in guiding cooperation with the guide hole.

[0018] By adopting the above technical solution, when the adjusting bolt is screwed, the adjusting block is driven relatively close to or away from the linkage rod. At this time, the guide column slides axially in the guide hole corresponding to the linkage rod, thereby realizing the lifting and lowering adjustment of the adjusting block relative to the linkage rod.

[0019] The present invention is further configured as follows: the linkage rod is fixed with a guide sleeve made of polytetrafluoroethylene material, and the guide hole is opened on the guide sleeve.

[0020] By adopting the above technical solution, polytetrafluoroethylene has good wear resistance and moisturizing properties, which can improve the sliding smoothness between the guide column and the guide sleeve.

[0021] The present invention is further configured as follows: a locking structure is provided between the adjusting bolt and the linkage rod, and when the height adjustment mechanism is adjusted to cause the adjusting block to move relative to the linkage rod to a predetermined distance, the adjusting bolt and the linkage rod are driven to remain locked by the locking structure.

[0022] By adopting the above technical solution, when the adjusting bolt is screwed to a predetermined position relative to the linkage rod, the locking structure can be used to lock and fix the adjusting bolt and the linkage rod to prevent the adjusting bolt from accidentally rotating relative to the linkage rod, which would cause the distance between the adjusting block and the linkage rod to change.

[0023] The utility model is further configured as follows: the locking structure includes a locking bolt arranged along the length direction of the linkage rod, the linkage rod is provided with a third threaded hole corresponding to the locking bolt, and the locking bolt is threadedly engaged with the third threaded hole to make the locking bolt press against or move away from the adjusting bolt.

[0024] By adopting the above technical solution, when the locking bolt is screwed into the third threaded hole so that the end of the bolt is pressed against the side wall of the adjusting bolt, the pressing force between the end of the locking bolt and the side wall of the adjusting bolt is utilized to achieve locking and preventing rotation between the locking bolt and the linkage rod.

[0025] In summary, the present invention has the following beneficial effects:

[0026] An adjusting block is provided at the bottom of the linkage rod, and a height adjusting mechanism is provided between the adjusting block and the linkage rod. The height adjusting mechanism is used to adjust the distance between the adjusting block and the linkage rod, so that the distance between the linkage rod and the adjusting block can be manually adjusted during the assembly process. When the piano is in a stationary state, the rotation center of the key unit, the rotation center of the linkage rod, and the impact point between the key unit and the linkage rod are adjusted to the same plane, so that the key unit is in the shortest pressing stroke position, and finally the string striking assembly can strike the strings in the shortest time when the key unit is pressed. In addition, when the key unit is lifted to press, the sound damping module can quickly dampen the strings, preventing the sound damping module from failing to respond quickly and pressing the strings to generate residual noise when the key unit is lifted. The piano has the effects of rapid sound production and sound damping response and effectively reducing noise generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall structural diagram of the first specific embodiment of the present utility model.

[0028] Figure 2 This utility model Figure 1 A partial enlarged view of area A in the middle.

[0029] Figure 3 This utility model Figure 2 A partial enlarged view of area B in the middle.

[0030] Figure 4 It is a partial cross-sectional view of the second specific embodiment of the present utility model.

[0031] Figure 5 It is a partial cross-sectional view of the third specific embodiment of the present utility model.

[0032] In the figure: 1. key unit; 11. key rod; 111. pressing end; 112. lifting end; 1121. clamping post; 12. middle gear; 2. linkage assembly; 21. linkage rod; 21a. guide hole; 21b. third threaded hole; 21c. internal threaded hole; 211. guide sleeve; 22. adjusting block; 22a. first threaded hole; 221. guide post; 23. locking bolt; 3. muffler module; 31. muffler rod; 32. muffler head; 33. flat head felt; 4. string striking assembly; 41. hammer; 42. hammer handle; 43. string felt; 5. adjusting bolt; 5a. second threaded hole; 51. anti-slip block; 511. anti-slip part; 512. threaded connection part; 61. ejector rod; 62. hammer; 63. ejector rod spring; 64. coupling shaft bracket. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings. Specific embodiment 1

[0035] An action structure of an upright piano, such as Figure 1 As shown, it includes a key unit 1, a linkage assembly 2, a damper module 3 and a striking assembly 4 arranged on a piano frame; wherein the damper module 3 includes a damper rod 31, a damper head 32 and a flat sound head felt 33, and the striking assembly 4 includes a hammer handle 42, a string hammer 41 and a string felt 43, and also includes a top rod 61, a rotary hammer 62, a top rod 61 spring and a coupling shaft bracket 64. The linkage assembly 2 and the striking assembly 4 are connected by a transmission mechanism, and the key unit 1 and the linkage assembly 2 cooperate to drive the striking assembly 4 and the striking assembly Component 4 is relatively close to or away from the strings; the key unit 1 includes a key rod 11 rotatably arranged on the middle position 12 of the piano frame, the key rod 11 includes a pressing end 111 and a lifting end 112, the lifting end 112 is fixed with a pin column 1121, the linkage assembly 2 includes a linkage rod 21 rotatably arranged on the piano frame and an adjusting block 22 arranged on the linkage rod 21, a height adjustment mechanism is provided between the adjusting block 22 and the linkage rod 21, and the height adjustment mechanism is used to adjust the distance height between the adjusting block 22 and the linkage rod 21.

[0036] like Figure 1-3As shown, the height adjustment mechanism includes an adjusting bolt 5 threadedly connected to the linkage rod 21, and the linkage rod 21 is provided with an internal threaded hole 21c corresponding to the adjusting bolt 5. The adjusting thread is threadedly connected to the internal threaded hole 21c, and the adjusting block 22 is adapted to have a first threaded hole 22a corresponding to the adjusting bolt 5. The adjusting bolt 5 is threadedly matched with the first threaded hole 22a. By screwing the adjusting bolt 5, the adjusting block 22 can be driven relatively close to or away from the linkage rod 21, thereby adjusting the distance between the adjusting block 22 and the linkage rod 21; an anti-slip piece is installed at the end of the adjusting bolt 5, and the adjusting bolt 5 is threadedly engaged with the first threaded hole 22a. Cooperating with the anti-slipping part of the adjusting block 22, the anti-slipping part can effectively prevent the adjusting bolt 5 from being separated from the adjusting block 22 during the screwing and adjustment process; the anti-slipping part includes an anti-slipping part 511 and a threaded connection part 512, and a second threaded hole 5a is provided at the end of the adjusting bolt 5 corresponding to the threaded connection part 512, and the threaded connection part 512 is threadedly connected to the second threaded hole 5a. The anti-slipping part is detachably connected to the adjusting bolt 5 by means of a threaded connection, so as to facilitate the disassembly and replacement of the adjusting bolt 5 on the linkage rod 21 and the adjusting block 22; the threaded rotation direction of the first threaded hole 22a is opposite to that of the second threaded hole 5a.

[0037] The basic working principle of the present invention is as follows: an adjustment block 22 is provided at the bottom of the linkage rod 21, and a height adjustment mechanism is provided between the adjustment block 22 and the linkage rod 21. The height adjustment mechanism is used to adjust the distance between the adjustment block 22 and the linkage rod 21, so that the distance between the linkage rod 21 and the adjustment block 22 can be manually adjusted during the assembly process. When the piano is in a stationary state, the rotation center of the key unit 1, the rotation center of the linkage rod 21, and the impact point between the key unit 1 and the linkage rod 21 are adjusted to the same plane, so that the key unit 1 is in the shortest depression stroke position, and finally the string striking assembly 4 can strike the strings in the shortest time when the key unit 1 is pressed. In addition, when the key unit 1 is lifted to press, the damper module 3 can quickly damp the strings, preventing the damper module 3 from failing to quickly respond and press the strings to generate residual noise when the key unit 1 is lifted. The piano has the effect of rapid sound production and damping response and effectively reducing noise. Specific embodiment 2

[0039] An action structure of an upright piano, such as Figure 4As shown, the difference between this embodiment and the specific embodiment 1 is that a guide structure is provided between the adjustment block 22 and the linkage rod 21, and the adjustment block 22 is guided to rise and fall relative to the linkage rod 21 through the guide structure. The setting of the guide structure makes the adjustment block 22 relatively stop relative to the linkage rod 21 when the adjustment bolt 5 is screwed, so that the adjustment block 22 can only move up and down relative to the linkage rod 21 when the adjustment bolt 5 is screwed; the guide structure includes a guide column 221 integrally provided on the adjustment block 22, and the linkage rod 21 is provided with a guide hole 21a corresponding to the guide column 221. 1 is guided and matched with the guide hole 21a. When the adjusting bolt 5 is screwed, the adjusting block 22 is driven to move relatively closer to or away from the linkage rod 21. At this time, the guide column 221 slides axially in the corresponding guide hole 21a of the linkage rod 21, thereby realizing the lifting and lowering adjustment of the adjusting block 22 relative to the linkage rod 21. The linkage rod 21 is fixedly provided with a guide sleeve 211 made of polytetrafluoroethylene material. The guide hole 21a is formed in the guide sleeve 211. Polytetrafluoroethylene has good wear resistance and moisturizing properties, which can improve the sliding smoothness between the guide column 221 and the guide sleeve 211.

[0040] The other structures of this embodiment are the same as those of the first embodiment and will not be described again here. Specific embodiment three

[0042] An action structure of an upright piano, such as Figure 5 As shown, the difference between this embodiment and the specific embodiment 2 is that a locking structure is provided between the adjusting bolt 5 and the linkage rod 21. When the height adjustment mechanism is adjusted to make the adjusting block 22 move relative to the linkage rod 21 to a predetermined distance, the adjusting bolt 5 and the linkage rod 21 are locked by the locking structure. When the adjusting bolt 5 is screwed to a predetermined position relative to the linkage rod 21, the locking structure can be used to achieve locking and fixing between the adjusting bolt 5 and the linkage rod 21, preventing the adjusting bolt 5 from accidentally rotating relative to the linkage rod 21, resulting in the adjustment block 22 and the linkage rod 21 being locked. The situation where the spacing changes; the locking structure includes a locking bolt 23 arranged along the length direction of the linkage rod 21, and the linkage rod 21 is provided with a third threaded hole 21b corresponding to the locking bolt 23. The locking bolt 23 is threadedly matched with the third threaded hole 21b, so that the locking bolt 23 is pressed against or away from the adjusting bolt 5. When the locking bolt 23 is screwed into the third threaded hole 21b so that the end of the bolt is pressed against the side wall of the adjusting bolt 5, the pressing force between the end of the locking bolt 23 and the side wall of the adjusting bolt 5 is used to realize the locking and rotation prevention between the locking bolt 23 relative to the linkage rod 21.

[0043] The other structures of this embodiment are the same as those of the second embodiment and will not be described again here.

[0044] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. A string-acting mechanism structure for an upright piano, comprising a key unit (1), a linkage assembly (2), a damper module (3) and a string-acting assembly (4) arranged on a piano frame, wherein the linkage assembly (2) and the string-acting assembly (4) are connected to each other via a transmission mechanism, and the key unit (1) and the linkage assembly (2) are linked to each other to drive the string-acting assembly (4) and the string-acting assembly (4) to move relatively close to or away from the strings, characterized in that: The keyboard unit (1) comprises a key rod (11) whose middle part is rotatably arranged on the piano frame, the key rod (11) comprises a pressing end (111) and a lifting end (112), the lifting end (112) is fixed with a clamping pin (1121), the linkage assembly (2) comprises a linkage rod (21) rotatably arranged on the piano frame and an adjusting block (22) arranged on the linkage rod (21), a height adjusting mechanism is provided between the adjusting block (22) and the linkage rod (21), and the height adjusting mechanism is used to adjust the height of the spacing between the adjusting block (22) and the linkage rod (21).

2. The action structure of an upright piano according to claim 1, characterized in that: The height adjustment mechanism comprises an adjustment bolt (5) threadedly connected to the linkage rod (21); the adjustment block (22) is adapted to open a first threaded hole (22a) corresponding to the adjustment bolt (5); and the adjustment bolt (5) is threadedly engaged with the first threaded hole (22a).

3. The action structure of an upright piano according to claim 2, characterized in that: An anti-dropout piece is installed at the end of the adjusting bolt (5), and the adjusting bolt (5) is anti-dropout matched with the adjusting block (22) through the anti-dropout piece.

4. The action structure of an upright piano according to claim 3, wherein: The anti-slip component comprises an anti-slip portion (511) and a threaded connection portion (512); a second threaded hole (5a) is provided at the end of the adjusting bolt (5) corresponding to the threaded connection portion (512); and the threaded connection portion (512) is threadedly connected to the second threaded hole (5a).

5. The action structure of an upright piano according to claim 4, characterized in that: The first threaded hole (22a) and the second threaded hole (5a) have opposite thread rotation directions.

6. The action structure of an upright piano according to claim 1, wherein: A guide structure is provided between the adjustment block (22) and the linkage rod (21), and the adjustment block (22) is guided to rise and fall relative to the linkage rod (21) by the guide structure.

7. The action structure of an upright piano according to claim 6, characterized in that: The guide structure comprises a guide column (221) integrally provided on the adjustment block (22); the linkage rod (21) is provided with a guide hole (21a) corresponding to the guide column (221); and the guide column (221) is in guiding cooperation with the guide hole (21a).

8. The action structure of an upright piano according to claim 7, wherein: The linkage rod (21) is fixedly provided with a guide sleeve (211) made of polytetrafluoroethylene material, and the guide hole (21a) is opened on the guide sleeve (211).

9. The action structure of an upright piano according to claim 2, wherein: A locking structure is provided between the adjusting bolt (5) and the linkage rod (21); when the height adjustment mechanism is adjusted to cause the adjusting block (22) to move relative to the linkage rod (21) to a predetermined distance, the adjusting bolt (5) and the linkage rod (21) are locked by the locking structure.

10. The action structure of an upright piano according to claim 9, characterized in that: The locking structure includes a locking bolt (23) arranged along the length direction of the linkage rod (21); the linkage rod (21) is provided with a third threaded hole (21b) corresponding to the locking bolt (23); the locking bolt (23) is threadedly engaged with the third threaded hole (21b), so that the locking bolt (23) is pressed against or away from the adjusting bolt (5).

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