Rod-shaped knocking structure for piano vibration playing test

Abstract

The utility model discloses a rod-shaped knocking structure for a piano vibration playing test, which comprises a movable rod, a knocking block is arranged at the front end of the movable rod, two stepped knocking surfaces are arranged at the bottom of the knocking block, the higher knocking surface is a black key knocking surface, and the lower knocking surface is a white key knocking surface; the two knocking faces are sequentially arranged in the length direction of the movable rod, and in the two knocking faces, the black key knocking face is closer to the front end of the movable rod. The movable rod is rotatably installed on the piano vibration playing machine, and when the front end of the movable rod rotates downwards, the knocking block is driven to conduct knocking action. The knocking block is hinged to the front end of the movable rod, and the knocking face can be close to the horizontal state along with rotation of the knocking block under the action of gravity. According to the utility model, black keys and white keys of the piano can be knocked at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of pianos, in particular to a rod-shaped striking structure for piano vibration testing. Background Art

[0002] After the piano is manufactured, it needs to be tested for vibration, that is, the piano keys are randomly struck with the help of a striking structure. The piano keys are divided into black keys and white keys, and there is a certain difference in the height of the black keys and the white keys. The ordinary striking structure generally only strikes the black keys or only strikes the white keys, which leads to a large number of striking structures required on the piano vibration machine and a complicated structure. Improvements are proposed for this. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a rod-shaped striking structure for piano vibration testing, which can strike the black keys and white keys of the piano at the same time.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a rod-shaped striking structure for piano vibration testing, comprising a movable rod, a striking block is arranged at the front end of the movable rod, and the bottom of the striking block has two stepped striking surfaces, wherein the higher striking surface is the black key striking surface, and the lower striking surface is the white key striking surface; the two striking surfaces are arranged in sequence along the length direction of the movable rod, and of the two striking surfaces, the black key striking surface is closer to the front end of the movable rod; the movable rod is rotatably mounted on the piano vibration machine, and when the front end of the movable rod rotates downward, it drives the striking block to perform a striking action.

[0005] Furthermore, the knocking block is hingedly mounted on the front end of the movable rod, and under the action of gravity, the knocking surface can approach a horizontal state as the knocking block rotates.

[0006] Furthermore, a balance bar is provided on the knocking block, and the balance bar can rotate synchronously with the knocking block; two elastic parts are relatively provided on the movable rod, and the balance bar is clamped between the two elastic parts; when the balance bar rotates, the elastic part is squeezed, and the elastic part is deformed under force to limit the rotation range of the knocking block.

[0007] Furthermore, elastic rubber layers are respectively provided on the white key striking surface and the black key striking surface.

[0008] Furthermore, the elastic rubber layer is covered with a felt layer.

[0009] Beneficial effects: The rod-shaped striking structure for piano vibration test of the utility model has the following beneficial effects:

[0010] 1) There are two stepped striking surfaces on the striking block, and the two striking surfaces strike the black keys and white keys of the piano respectively;

[0011] 2) The striking block is hinged at the front end of the movable rod. Under the action of gravity, the striking block will rotate, so that the two striking surfaces rotate to a nearly horizontal state, increasing the contact area between the keys and the striking surfaces when striking, and not easily damaging the keys. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a schematic diagram of the movable rod being installed on the piano recital machine;

[0013] Attached Figure 2 This is a schematic diagram of the structure of the knocking block. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings.

[0015] As attached Figures 1 to 2 The rod-shaped striking structure for piano vibration test comprises a movable rod 1, a striking block 2 is arranged below the front end of the movable rod 1, and the bottom of the striking block 2 has two stepped striking surfaces 3, wherein the higher striking surface 3 is the black key striking surface 301, and the lower striking surface 3 is the white key striking surface 302. Figure 1 As shown in , the two striking surfaces 3 are arranged in sequence along the length direction of the movable rod 1, and of the two striking surfaces 3, the black key striking surface 301 is closer to the front end of the movable rod 1. When the movable rod 1 drives the striking block 2 to perform a striking action, the black key striking surface 301 is opposite to the black keys of the piano, and the white key striking surface 302 is opposite to the white keys of the piano, so after the striking block 2 falls, the striking block 2 can strike the black keys and white keys of the piano at the same time.

[0016] The movable rod 1 is rotatably mounted on the piano recital machine 4, and the front end of the movable rod 1 rotates downward to drive the striking block 2 to perform a striking action. Figure 1 In one embodiment shown in , the middle part of the movable rod 1 is hinged on the piano resonator 4, and the rear end of the movable rod 1 is provided with a roller 9, and the piano resonator 4 is provided with an eccentric wheel 10, which is driven to rotate by a motor and connected to the roller 9. When the eccentric wheel 10 rotates, it drives the rear end of the movable rod 1 to rise and fall back and forth, so that the striking block 2 at the front end of the movable rod 1 can continuously perform the striking action. A reset spring 11 is also provided on the piano resonator 4, and the upper end of the reset spring 11 presses on the movable rod 1 to keep the roller 9 and the eccentric wheel 10 in contact.

[0017] The striking block 2 is hingedly mounted at the front end of the movable rod 1. Under the action of gravity, the striking surface 3 can approach a horizontal state as the striking block 2 rotates, so that the striking surface 3 is also close to a horizontal state when striking the keys. In addition, during the striking process, the striking block 2 can also rotate, so that the contact area between the striking surface 3 and the keys is larger, making it less likely to damage the keys.

[0018] The striking block 2 is provided with a balance bar 5, which can rotate synchronously with the striking block 2. Two elastic members 6 are relatively provided on the movable rod 1, and the balance bar 5 is sandwiched between the two elastic members 6. When the balance bar 5 rotates, the elastic member 6 is squeezed, and the elastic member 6 is deformed by force to limit the rotation range of the striking block 2. If the balance bar 5 is not provided, after the movable rod 1 is continuously shaken up and down, the striking block 2 is also likely to produce a large left and right shaking, and when the striking block 2 falls, the part other than the striking surface 3 of the striking block 2 may contact the piano keys, causing damage to the keys.

[0019] The white key striking surface 302 and the black key striking surface 301 are respectively provided with an elastic rubber layer 7, and the elastic rubber layer 7 is covered with a felt layer 8, which also has a certain elasticity. With the cooperation of the elastic rubber layer 7 and the felt layer 8, the impact during striking can be absorbed, and the striking block 2 is not likely to cause damage to the keys during striking.

[0020] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A rod-shaped striking structure for piano vibration testing, characterized in that: The movable rod (1) comprises a striking block (2) at the front end of the movable rod (1); the bottom of the striking block (2) comprises two stepped striking surfaces (3), wherein the higher striking surface (3) is a black key striking surface (301), and the lower striking surface (3) is a white key striking surface (302); the two striking surfaces (3) are arranged in sequence along the length direction of the movable rod (1), and of the two striking surfaces (3), the black key striking surface (301) is closer to the front end of the movable rod (1); The movable rod (1) is rotatably mounted on the piano recital machine (4), and when the front end of the movable rod (1) rotates downward, it drives the striking block (2) to perform a striking action.

2. The rod-shaped striking structure for piano vibration test according to claim 1, characterized in that: The knocking block (2) is hingedly mounted on the front end of the movable rod (1), and under the action of gravity, the knocking surface (3) can approach a horizontal state as the knocking block (2) rotates.

3. The rod-shaped striking structure for piano vibration test according to claim 2, characterized in that: The knocking block (2) is provided with a balancing rod (5), and the balancing rod (5) can rotate synchronously with the knocking block (2); two elastic members (6) are arranged opposite to each other on the movable rod (1), and the balancing rod (5) is sandwiched between the two elastic members (6); when the balancing rod (5) rotates, it squeezes the elastic member (6), and after the elastic member (6) is deformed by force, the rotation range of the knocking block (2) is limited.

4. The rod-shaped striking structure for piano vibration test according to claim 1, characterized in that: The white key striking surface (302) and the black key striking surface (301) are respectively provided with elastic rubber layers (7).

5. The rod-shaped striking structure for piano vibration test according to claim 4, characterized in that: The elastic rubber layer (7) is covered with a felt layer (8).

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