Piano hammer head bonding device

Abstract

The utility model relates to the technical field of piano maintenance, and discloses a piano hammer head bonding device which comprises a base and supporting plates fixed on two sides of the top of the base, and further comprises a rotating rod arranged on one side of each supporting plate, one end of the rotating rod is fixedly connected with a fixed shell, and a bidirectional threaded rod is arranged in an inner cavity of the fixed shell; according to the utility model, through the cooperation of the bidirectional threaded rod and the sleeve with the positioning mechanism, the hammer head and the felt can be extruded, so that the connection part is more fit, the operation is more convenient, the adhesion effect is also improved, and meanwhile, under the cooperation of the positioning block and the connecting frame, the fixed shell can be conveniently rotated, and the operation is more convenient. Therefore, a worker can fix the hammer head and the felt by using a nail after drilling when sticking the hammer head and the felt, the operation is more convenient, the sticking efficiency of the hammer head is also improved, and the problems that the sticking effect is poor and the efficiency is lower when the conventional hammer head is stuck are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of piano maintenance, in particular to a piano hammer sticking device. Background Technique

[0002] In a piano, the function of the hammer is to strike the strings to make them vibrate. The hammer core has a certain hardness, the hammer handle has good toughness, and the density of the hammer felt is relatively uniform and elastic, which can make the tone more perfect. The traditional piano is provided with keys. By striking the keys, the hammer triggers the strings to make a sound. The hammer is one of the most important components on the piano. The hardness transition and elasticity from the first hammer to the eighty-eighth hammer are very important.

[0003] However, after long-term use of the existing piano, the felt on the surface of the hammer will crack, which will affect the accuracy of the sound. Moreover, when it gets damp, the felt will separate from the hammer, resulting in the need to replace the felt. Currently, most of the work is done manually by staff to apply glue to the hammer and the felt and then fix them. Before the glue solidifies, the staff needs to press the felt to make it fit better with the hammer, which is rather cumbersome. Then, after waiting for the glue to solidify, holes are drilled in the felt and nails are used to fix the felt and the hammer again, with low efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide a piano hammer sticking device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A piano hammer sticking device, including a base and support plates fixed on both sides of its top, further including:

[0006] A rotating rod arranged on one side of the support plate. One end of the rotating rod is fixedly connected with a fixed shell. A bidirectional threaded rod is arranged in the inner cavity of the fixed shell. Both sides of the surface of the bidirectional threaded rod are bolted with sleeves. A positioning mechanism is installed on the top of the sleeve.

[0007] A connecting frame fixed to the other end of the rotating rod. A positioning rod is fixedly connected to one side of the support plate. A compression spring is fixedly connected to the surface of the positioning rod. The other end of the compression spring is fixedly connected with a positioning block. A pushing mechanism is installed on the surface of the support plate.

[0008] Preferably, the positioning mechanism includes a connecting plate rotating on the top of the sleeve and positioning rollers fixed on both sides of its top. A protective sleeve is sleeved on the surface of the positioning roller.

[0009] Preferably, the pushing mechanism includes a pushing frame sliding on one side of the support plate and a limiting groove opened on one side of the support plate. It further includes a limiting block sliding on the inner wall of the limiting groove and a fixed frame fixed to the bottom of the pushing frame.

[0010] Preferably, one side of the pushing frame is designed with an inclined structure. The surface of the pushing frame is slidably connected to the surface of the positioning block. The cross-sectional shapes of the limiting groove and the limiting block are both designed as T-shaped structures.

[0011] Preferably, the other end of the bidirectional threaded rod is fixedly connected with a bearing seat, and the other side of the bearing seat is fixedly connected to the inner wall of the fixed shell.

[0012] Preferably, the inner cavity of the connecting frame is designed as a cross-shaped structure, and the surface of the positioning block is slidably connected to the inner wall of the connecting frame.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] Through the cooperation of the bidirectional threaded rod, the sleeve and the positioning mechanism, the present utility model can extrude the hammer and the felt, so that the connection part is more fitting. This is not only relatively convenient, but also improves the adhesion effect. At the same time, with the cooperation of the positioning block and the connecting frame, it is convenient to rotate the fixed shell, so that the staff can drill holes and use nails to fix when adhering the hammer and the felt. This is not only relatively convenient, but also improves the adhesion efficiency of the hammer. And with the cooperation of the positioning block and the pushing mechanism, it is convenient to limit the fixed shell, solving the problems of poor adhesion effect and low efficiency when the existing hammer is adhered. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structure schematic diagram of the present utility model;

[0016] Figure 2 is a partial three-dimensional sectional structure schematic diagram of the present utility model;

[0017] Figure 3 is a partial three-dimensional sectional structure schematic diagram of the present utility model from another perspective;

[0018] Figure 4 is a partial three-dimensional structure schematic diagram of the present utility model.

[0019] In the figure: 1, base; 2, support plate; 3, rotating rod; 4, fixed shell; 5, bidirectional threaded rod; 6, sleeve; 7, positioning mechanism; 71, connecting plate; 72, positioning roller; 73, protective sleeve; 8, connecting frame; 9, positioning rod; 10, compression spring; 11, positioning block; 12, pushing mechanism; 121, pushing frame; 122, limiting groove; 123, limiting block; 124, fixed frame; 13, bearing seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4As shown in the figure, a device for gluing a piano hammer includes a base 1. On both sides of the top of the base 1, there are fixed connection support plates 2. On one side of the support plate 2, there is a rotating rod 3. The other end of the rotating rod 3 penetrates to the other side of the support plate 2 and is rotatably connected to the inner wall of its penetration. One end of the rotating rod 3 is fixedly connected with a fixed shell 4. Inside the fixed shell 4, there is a bidirectional threaded rod 5. One end of the bidirectional threaded rod 5 penetrates to the outside of the fixed shell 4 and is rotatably connected to the inner wall of its penetration. One end of the bidirectional threaded rod 5 is fixedly connected with a handle. Under this effect, it can make it more convenient and labor-saving for the staff to rotate the bidirectional threaded rod 5. On both sides of the surface of the bidirectional threaded rod 5, there are bolt-connected sleeves 6. The other end of the bidirectional threaded rod 5 is fixedly connected with a bearing seat 13. The other side of the bearing seat 13 is fixedly connected with the inner wall of the fixed shell 4. Under this effect, it can limit the bidirectional threaded rod 5 when it rotates, so that the bidirectional threaded rod 5 will not easily have a large amplitude of jitter when rotating, effectively improving the stability of the bidirectional threaded rod 5 when rotating. The surface of the sleeve 6 is slidably connected with the inner wall of the fixed shell 4. Under this effect, it can guide the sleeve 6 when it moves, so that the sleeve 6 will not rotate when it moves under the thread on the surface of the bidirectional threaded rod 5, effectively improving the stability of the sleeve 6 when moving. The top of the sleeve 6 is provided with a positioning mechanism 7. The positioning mechanism 7 is used in cooperation with the sleeve 6. Under this effect, it can move the position of the positioning mechanism 7 when the sleeve 6 moves, so that the positioning mechanism 7 presses the felt and the hammer, thereby improving the accuracy of fixing the felt and the hammer, and avoiding the felt and the hammer not being well-fitted during gluing, which affects the gluing effect. The other end of the rotating rod 3 is fixedly connected with a connecting frame 8. The inner cavity of the connecting frame 8 is designed in a cross-shaped structure. On one side of the support plate 2, there is a positioning rod 9 fixedly connected. On the surface of the positioning rod 9, there is a compression spring 10 fixedly connected. The other end of the compression spring 10 is fixedly connected with a positioning block 11. The surface of the positioning block 11 is slidably connected with the inner wall of the connecting frame 8. Under this effect, when the fixed shell 4 rotates, the connecting frame 8 will rotate accordingly, and under the action of the positioning block 11, it can limit the connecting frame 8, so that the fixed shell 4 will not easily rotate again after rotation. And when it is necessary to rotate the fixed shell 4, only need to take out the positioning block 11 from the inner cavity of the connecting frame 8. On the surface of the support plate 2, there is a pushing mechanism 12. The pushing mechanism 12 can push the two positioning blocks 11, so that the two positioning blocks 11 can move simultaneously, thus facilitating the staff to rotate the fixed shell 4.

[0022] The positioning mechanism 7 includes a connecting plate 71, the bottom of which is rotatably connected to the top of the sleeve 6, and positioning rollers 72 are fixedly connected to both sides of the top of the connecting plate 71. The positioning roller 72 is designed as a T-shaped structure, and a protective sleeve 73 is provided on the surface of the positioning roller 72. The protective sleeve 73 is made of rubber material, under which the felt and the hammer can be squeezed against each other during adhesion, thereby improving the adhesion effect on the felt and the hammer, and the felt will not be damaged due to the material of the protective sleeve 73, which effectively improves the adhesion effect on the felt and the hammer, and the protective sleeve 73 can also be rotated actively according to the shape of the felt and the hammer under the rotatable action of the connecting plate 71, so that the force applied to the felt and the hammer is more uniform.

[0023] The pushing mechanism 12 includes a pushing frame 121, the surface of the pushing frame 121 is slidably connected to the surface of the support plate 2, one side of the pushing frame 121 is of an inclined structural design, the surface of the pushing frame 121 is slidably connected to the surface of the positioning block 11, one side of the support plate 2 is provided with a limiting groove 122, the inner wall of the limiting groove 122 is slidably connected to the limiting block 123, one side of the limiting block 123 is fixedly connected to the pushing frame 121, and the cross-sectional shapes of the limiting groove 122 and the limiting block 123 are both T-shaped structural designs, under this action, the pushing frame 121 can be pushed. When the frame 121 moves, the limit groove 122 and the limit block 123 cooperate with each other to guide the pushing frame 121, and the pushing frame 121 can also be limited by the shape of the limit groove 122 and the limit block 123, so that the limit block 123 will not easily detach from the inside of the limit groove 122. The bottom of the pushing frame 121 is fixedly connected to a fixing frame 124, and the fixing frame 124 is a U-shaped structure design. Under this function, the two pushing frames 121 can be connected, which is convenient for moving the two pushing frames 121 at the same time.

[0024] Working principle: first, coat the felt and the hammer with glue and place them on the top of the fixed shell 4, then rotate the bidirectional threaded rod 5 so that it drives the connecting plate 71 and the protective sleeve 73 to move through the sleeve 6 under the action of the bolt, so as to squeeze the felt and the hammer, so that the connection between the felt and the hammer is more fitted, then the staff moves the fixing frame 124 to drive the pushing frame 121 to push the positioning block 11 to move, so that it is out of the inner cavity of the connecting frame 8, then rotate the fixed shell 4 ninety degrees, then release the fixing frame 124, and under the action of the compression spring 10, the positioning block 11 will be embedded in the interior of the connecting frame 8 again to limit the fixed shell 4, then the staff drills holes in the felt and the hammer and fixes them with nails, and after the nails are fixed, wait for the glue to solidify and remove the felt and the hammer.

[0025] It should be noted that, in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0026] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A piano hammer gluing device, comprising a base (1) and support plates (2) fixed to both sides of its top, characterized in that, Further included are: A rotating rod (3) arranged on one side of the support plate (2). One end of the rotating rod (3) is fixedly connected with a fixed shell (4). A bidirectional threaded rod (5) is arranged in the inner cavity of the fixed shell (4). Both sides of the surface of the bidirectional threaded rod (5) are bolted with sleeves (6). A positioning mechanism (7) is installed on the top of the sleeve (6). A connecting frame (8) fixed to the other end of the rotating rod (3). A positioning rod (9) is fixedly connected to one side of the support plate (2). A compression spring (10) is fixedly connected to the surface of the positioning rod (9). The other end of the compression spring (10) is fixedly connected with a positioning block (11). A pushing mechanism (12) is installed on the surface of the support plate (2).

2. The piano hammer gluing device according to claim 1, characterized in that: The positioning mechanism (7) includes a connecting plate (71) rotating on the top of the sleeve (6) and positioning rollers (72) fixed to both sides of its top. A protective sleeve (73) is sleeved on the surface of the positioning roller (72).

3. The piano hammer gluing device according to claim 1, characterized in that: The pushing mechanism (12) includes a pushing frame (121) sliding on one side of the support plate (2) and a limiting groove (122) opened on one side of the support plate (2). It also includes a limiting block (123) sliding on the inner wall of the limiting groove (122) and a fixed frame (124) fixed to the bottom of the pushing frame (121).

4. A piano hammer gluing device according to claim 3, characterized in that: One side of the pushing frame (121) is designed with an inclined structure. The surface of the pushing frame (121) is slidably connected with the surface of the positioning block (11). The cross-sectional shapes of the limiting groove (122) and the limiting block (123) are both designed as T-shaped structures.

5. The piano hammer gluing device according to claim 1, wherein: The other end of the bidirectional threaded rod (5) is fixedly connected with a bearing seat (13). The other side of the bearing seat (13) is fixedly connected with the inner wall of the fixed shell (4).

6. The piano hammer sticking device according to claim 1, characterized in that: The inner cavity of the connecting frame (8) is designed as a cross-shaped structure. The surface of the positioning block (11) is slidably connected with the inner wall of the connecting frame (8).

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