Piano top cover hinge

Abstract

The utility model discloses a piano top cover hinge, which relates to the technical field of piano hinges, and comprises a hinge piece I, a hinge piece II and a hinge shaft, one end of the hinge piece I and one end of the hinge piece II are respectively provided with a clamping groove I and a clamping groove II, a plurality of mounting holes I are formed in the clamping groove I, and a plurality of limiting blocks I are fixedly mounted in the clamping groove I; a plurality of second mounting holes are formed in the second clamping grooves, a plurality of second clamping blocks are fixedly mounted in the second clamping grooves, a hinge shaft is arranged between the first hinge piece and the second hinge piece, the hinge shaft comprises two threaded shaft bodies, the outer walls of the threaded shaft bodies are sleeved with gaskets, the threaded shaft bodies are sleeved with nuts, and one ends of the nuts abut against the gaskets; a worker firstly clamps the first rectangular base plate and the second rectangular base plate which accord with the first clamping groove and the second clamping groove in the first clamping groove and the second clamping groove, and then a plurality of bolts are installed, so that the first rectangular base plate and the second rectangular base plate increase the friction force effect on the bolts at the same time, the operation steps can be effectively reduced, the installation efficiency is improved, and the applicability is further improved.

Description

Technical Field

[0001] This utility model relates to the field of piano hinge technology, specifically to a piano top cover hinge. Background Technology

[0002] A piano is mainly composed of mechanical devices such as keyboard, action, hammers, dampers, strings, and pedals. The piano lid is an important part of the piano's outer shell. The piano lid can prevent dust and debris from entering the piano and prevent them from falling on key components such as strings and action, thereby affecting the normal operation and sound quality of the piano. At the same time, it can also prevent accidental collisions from damaging internal parts to a certain extent. The piano lid is connected to the back post by a lid hinge.

[0003] In existing piano lid hinge technology, when the hinge pieces are spliced ​​together by bolts or screws, shims of the appropriate size are usually not installed, resulting in weak installation tightness. Compared with hinge structures with shims, the maintenance cycle is shorter, which increases the number of maintenance times and has great limitations. At the same time, when installing multiple parts, the installation method of each part needs to be repeated many times, which affects installation efficiency and has poor applicability. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a piano top cover hinge to overcome the above-mentioned technical problems existing in the prior art.

[0005] A piano top cover hinge includes a hinge plate 1, a hinge plate 2, and a hinge shaft. One end of the hinge plate 1 and the hinge plate 2 are respectively provided with a slot 1 and a slot 2. The slot 1 has several mounting holes 1 and several limiting blocks 1 are fixedly installed therein. The slot 2 has several mounting holes 2 and several locking blocks 2 are fixedly installed therein. A hinge shaft is provided between the hinge plate 1 and the hinge plate 2. The hinge shaft includes two threaded shafts. A washer is fitted onto the outer wall of each threaded shaft, and a nut is threaded onto it. One end of the nut abuts against the washer. Rectangular pad 1 and rectangular pad 2 are respectively provided in the slot 1 and the slot 2.

[0006] The inner wall dimensions of the first rectangular pad and the first slot are the same, and the inner wall dimensions of the second rectangular pad and the second slot are the same.

[0007] Preferably, one end of the hinge piece one is provided with hinge sleeve one and hinge sleeve two, and one end of the hinge piece two is provided with hinge sleeve three, and the inner wall dimensions of hinge sleeve one, hinge sleeve two and hinge sleeve three are the same.

[0008] Preferably, the hinge shaft further includes a main shaft body, which is inserted inside the first hinge sleeve, the second hinge sleeve, and the third hinge sleeve, and the third hinge sleeve is rotatably sleeved on the main shaft body.

[0009] Preferably, the two threaded shafts are respectively inserted into the first hinge sleeve and the second hinge sleeve, and one end of each of the two washers abuts against the first hinge sleeve and the second hinge sleeve.

[0010] Preferably, one end of hinge piece one and hinge piece two are respectively provided with label sticker one and label sticker two.

[0011] Preferably, a locking block is fixedly installed at one end of both hinge sleeve one and hinge sleeve two, and a stop block is fixedly installed at one end of hinge sleeve three.

[0012] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0013] This invention provides a piano top cover hinge. Through the mutual cooperation of a nut, a threaded shaft, a washer, and hinge sleeves one, two, and three, the nut, after being fitted onto the threaded shaft, engages with hinge sleeves one and two, compressing the washer and increasing friction. In a vibrating environment, this friction helps prevent the screw from loosening, extending the equipment's lifespan, reducing the frequency of piano repairs, and improving usability.

[0014] This utility model provides a piano top cover hinge. Through the mutual cooperation between hinge plate one, hinge plate two, slot one, slot two, mounting hole one, mounting hole two, limit block one, and limit block two, the operator first inserts rectangular pad one and rectangular pad two that conform to slot one and slot two into slot one and slot two, and then installs several bolts. This allows rectangular pad one and rectangular pad two to simultaneously increase the friction of multiple bolts, effectively reducing operation steps, thereby improving installation efficiency and further enhancing applicability. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram illustrating the explosion effect of this utility model;

[0018] Figure 4 for Figure 3 An enlarged schematic diagram of part A in the middle;

[0019] Figure 5 This is a three-dimensional structural diagram of a portion of the present invention;

[0020] Figure 6This is a three-dimensional structural diagram of rectangular pad one and rectangular pad two in this utility model.

[0021] In the picture:

[0022] 1. Hinge plate one; 101. Hinge sleeve one; 102. Hinge sleeve two; 103. Locking block; 104. Locking groove one; 105. Mounting hole one; 106. Limiting block one; 107. Label sticker one; 2. Hinge plate two; 201. Hinge sleeve three; 202. Abutting block; 203. Locking groove two; 204. Mounting hole two; 205. Locking block two; 206. Label sticker two; 3. Hinge shaft; 301. Main shaft body; 302. Threaded shaft body; 303. Washer; 304. Nut; 4. Rectangular pad one; 5. Rectangular pad two. Detailed Implementation

[0023] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments:

[0024] like Figure 1-6 As shown, this utility model provides a piano top cover hinge, including a hinge plate 1, a hinge plate 2, and a hinge shaft 3. One end of the hinge plate 1 and the hinge plate 2 is respectively provided with a slot 104 and a slot 203. The slot 104 has several mounting holes 105 and several limiting blocks 106 are fixedly installed therein. The slot 203 has several mounting holes 204 and several locking blocks 205 are fixedly installed therein. A hinge shaft 3 is provided between the hinge plate 1 and the hinge plate 2. The hinge shaft 3 includes two threaded shafts 302. A washer 303 is fitted onto the outer wall of each threaded shaft 302, and a nut 304 is threaded onto it. One end of the nut 304 abuts against the washer 303. One end of the hinge plate 1 is provided with a hinge sleeve 101 and a hinge sleeve 202. Hinge sleeve 201 is provided at one end of hinge sleeve 2. The inner wall dimensions of hinge sleeve 101, hinge sleeve 202 and hinge sleeve 301 are the same. A locking block 103 is fixedly installed at one end of hinge sleeve 101 and hinge sleeve 202. A stop block 202 is fixedly installed at one end of hinge sleeve 301. Hinge shaft 3 also includes main shaft body 301. Main shaft body 301 is inserted into hinge sleeve 101, hinge sleeve 202 and hinge sleeve 301. Hinge sleeve 301 is rotatably sleeved on main shaft body 301. Two threaded shafts 302 are respectively inserted into hinge sleeve 101 and hinge sleeve 202. One end of two washers 303 abuts against hinge sleeve 101 and hinge sleeve 202 respectively. Rectangular pad 1 4 and rectangular pad 2 5 are respectively provided in the locking groove 1 104 and locking groove 203.

[0025] The inner wall dimensions of rectangular pad 4 and slot 104 are the same, and the inner wall dimensions of rectangular pad 5 and slot 203 are the same.

[0026] When it is necessary to disassemble hinge piece 1 and hinge piece 2, the operator turns the two nuts 304 one after the other, then removes the washer 303, and removes the hinge shaft 3 by pulling. By setting the washer 303, the washer 303 can increase the friction. In a vibrating environment, this friction helps to prevent the screw from loosening, extend the service life of the equipment, reduce the frequency of piano maintenance, and improve applicability.

[0027] Hinge piece 1 is attached to a piano top cover. Then, a rectangular pad 4, suitable for slot 104, is inserted into slot 104 and slidably fitted onto several limiting blocks 106. Bolts are then threadedly connected to mounting holes 105 and the piano top cover to quickly install hinge piece 1. Next, hinge piece 2 is attached to the piano top cover. Then, rectangular pad 5 is inserted into slot 203 in the same way. Finally, bolts are installed on the piano top cover through several mounting holes 204, with one end of the bolt abutting against rectangular pad 5. By simultaneously increasing the friction of multiple bolts, the number of operation steps can be effectively reduced, thereby improving installation efficiency and further enhancing applicability.

[0028] like Figure 2 As shown, in one embodiment, one end of hinge piece 1 and hinge piece 2 is provided with label sticker 107 and label sticker 206, respectively.

[0029] When installing the equipment on the piano lid, the production staff can engrave reminders such as installation instructions or correct installation positions on label 107 and label 206 in advance. This makes it easier for the staff to quickly connect the equipment to the piano lid during installation, making it highly applicable.

[0030] The working principle of the piano's top cover hinge will be explained in detail below:

[0031] When installing the equipment on the piano top cover, the production staff can first engrave installation instructions or correct installation positions on labels 107 and 206. This will make it easier for the staff to quickly align the equipment with the piano top cover during installation. Hinge piece 1 is attached to a piano top cover. Then, a rectangular pad 4 that fits into slot 104 is inserted into slot 104. The rectangular pad 4 is slidably fitted onto several limit blocks 106. Then, the bolts are threaded to the mounting holes 105 and the piano top cover to quickly install hinge piece 1. Next, hinge piece 2 is attached to the piano top cover. Then, rectangular pad 25 is inserted into slot 203 in the same way. Finally, the bolts are installed on the piano top cover through several mounting holes 204, with one end of the bolt abutting against rectangular pad 25.

[0032] When it is necessary to disassemble hinge piece 1 and hinge piece 2, the operator turns the two nuts 304 one after the other, then removes the washer 303, and removes the hinge shaft 3 by pulling. By setting the washer 303, the washer 303 can increase the friction. In a vibrating environment, this friction helps to prevent the screw from loosening, extend the service life of the equipment, reduce the frequency of piano maintenance, and improve applicability.

[0033] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A piano top cover hinge, comprising hinge plate one (1), hinge plate two (2) and hinge shaft (3), characterized in that: One end of the hinge piece 1 (1) and the hinge piece 2 (2) are respectively provided with a slot 1 (104) and a slot 2 (203). The slot 1 (104) is provided with a plurality of mounting holes 1 (105) and a plurality of limiting blocks 1 (106) are fixedly installed. The slot 2 (203) is provided with a plurality of mounting holes 2 (204) and a plurality of locking blocks 2 (205) are fixedly installed. A hinge shaft (3) is provided between the hinge piece 1 (1) and the hinge piece 2 (2). The hinge shaft (3) includes two threaded shafts (302). The outer wall of the threaded shafts (302) is fitted with a washer (303) and a nut (304) is threadedly connected. One end of the nut (304) abuts against the washer (303). A rectangular pad 1 (4) and a rectangular pad 2 (5) are respectively provided in the slot 1 (104) and the slot 2 (203). The inner wall dimensions of the first rectangular pad (4) and the first slot (104) are the same, and the inner wall dimensions of the second rectangular pad (5) and the second slot (203) are the same.

2. The piano top cover hinge according to claim 1, characterized in that: One end of the hinge piece 1 (1) is provided with hinge sleeve 1 (101) and hinge sleeve 2 (102), and one end of the hinge piece 2 (2) is provided with hinge sleeve 3 (201). The inner wall dimensions of hinge sleeve 1 (101), hinge sleeve 2 (102) and hinge sleeve 3 (201) are the same.

3. A piano top cover hinge according to claim 2, characterized in that: The hinge shaft (3) also includes a main shaft body (301), which is inserted inside the hinge sleeve one (101), hinge sleeve two (102) and hinge sleeve three (201), and the hinge sleeve three (201) is rotatably sleeved on the main shaft body (301).

4. A piano top cover hinge according to claim 2, characterized in that: The two threaded shafts (302) are respectively inserted into the first hinge sleeve (101) and the second hinge sleeve (102), and one end of the two gaskets (303) abuts against the first hinge sleeve (101) and the second hinge sleeve (102).

5. A piano top cover hinge according to claim 1, characterized in that: One end of the hinge piece 1 (1) and the hinge piece 2 (2) are respectively provided with label sticker 1 (107) and label sticker 2 (206).

6. A piano top cover hinge according to claim 2, characterized in that: A locking block (103) is fixedly installed at one end of the first hinge sleeve (101) and the second hinge sleeve (102), and a stop block (202) is fixedly installed at one end of the third hinge sleeve (201).

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