Height-adjustable vertical piano wheel with rotation stopping function
By introducing a fastening pin and nut structure between the screw and bushing of the upright piano wheel, the problem of the wheel's height changing during movement is solved, achieving stability and adjustability of the wheel and preventing the piano from tipping over.
Patent Information
- Application Number
- CN202423207384.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2034-12-25
AI Technical Summary
The existing height-adjustable upright piano wheels lack a de-rotation function during movement, causing the wheel screw and bushing to rotate relative to each other, resulting in a change in height and potentially causing the piano to tip over.
An adjustable height upright piano wheel with anti-rotation function was designed. By setting a fastening pin and nut structure between the wheel screw and the bushing, the threaded connection and fastening pin lock the wheel screw to prevent relative rotation between it and the bushing, ensuring that the four wheels are on the same horizontal plane.
It effectively prevents relative rotation between the wheel screw and the bushing, maintains the height stability of the wheel assembly, avoids the risk of the piano tipping over, and allows for height adjustment of the wheel assembly.
Smart Images
Figure CN223956273U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to piano technical field especially, it is vertical piano wheel with adjustable height with stop function. BACKGROUND
[0002] Piano is a kind of elegant keyboard instrument, is praised as the king of musical instruments, has wide tonal range, grand volume and rich timbre variation, can express various different musical emotions.Piano is usually composed of 88 keys, and sound is realized through the internal complex mechanical device, and the piano wheel is small-sized roller installed under the piano base, is usually made of metal or rubber material, and its main function is to facilitate people to move piano, whether the piano is transferred in different rooms in the home or is relocated at a long distance, can be realized by using the piano wheel, and simultaneously, the piano wheel can also protect the floor and piano base to some extent, reduces the abrasion that can be generated in the moving process;
[0003] The installation screw rod of the adjustable height vertical piano wheel does not have stop function in the position connected with the piano leg, in the process of moving the piano, the piano wheel rotates back and forth, drives the installation screw rod of the piano wheel and the shaft sleeve under the piano leg to rotate relatively, due to the threaded connection structure of the screw rod and the shaft sleeve, the relative height of the screw rod and the shaft sleeve changes, causes four piano wheels not to be in a plane, and seriously, the piano wheel falls off, the piano tips over, therefore, the utility model provides a vertical piano wheel with adjustable height with stop function to solve the problems in the prior art. SUMMARY
[0004] In view of the above problems, the utility model provides a vertical piano wheel with adjustable height with stop function, the vertical piano wheel with adjustable height with stop function avoids the relative rotation between the piano wheel screw rod and the piano wheel shaft sleeve to cause height change, and prevents the occurrence of accidental situation.
[0005] To achieve the purpose of the utility model, the utility model realizes the following technical scheme: a vertical piano wheel with adjustable height with stop function, including piano wheel shaft sleeve and piano wheel assembly, the middle position of the upper side of the piano wheel assembly is equipped with piano wheel screw rod, the inner side of the piano wheel shaft sleeve is equipped with shaft sleeve screw hole, the piano wheel screw rod is threadedly matched with the shaft sleeve screw hole;
[0006] The outer side of the piano wheel screw rod is equipped with nut, and the nut is threadedly matched with the piano wheel screw rod, the nut is limited below the piano wheel shaft sleeve, the lower side of the one side of the piano wheel shaft sleeve is equipped with side screw hole, and the inner side of the side screw hole is threadedly installed with fastening pin, and the inner end of the fastening pin is used to extend to the inner side of the shaft sleeve screw hole and lock the piano wheel screw rod.
[0007] Further improvement lies in that the wheel assembly comprises a wheel seat, a wheel shaft and a wheel body, the wheel shaft is arranged at the inner side of the wheel seat, and the wheel body is rotatably arranged at the outer side of the wheel shaft.
[0008] Further improvement lies in that the wheel shaft is provided with a screw head at both ends, the screw head penetrates through both ends of the wheel seat, and a locking nut is threadedly installed on the screw head.
[0009] Further improvement lies in that the wheel seat is rotatably connected with a connecting disc at the top, and the wheel screw rod is arranged at the middle position of the top of the connecting disc.
[0010] Further improvement lies in that the caliber of the locking nut is larger than the outer caliber of the wheel shaft sleeve.
[0011] Further improvement lies in that the lower side of the outer side of the wheel shaft sleeve is provided with a mounting disc, and the edge of the inner side of the mounting disc is provided with a mounting hole, and the mounting hole is provided with at least three groups.
[0012] Further improvement lies in that the wheel shaft sleeve is used for being installed through the shaft sleeve hole of the piano leg, and the mounting disc is fixed to the piano leg through the cross slot countersunk head self-tapping screw matched with the mounting hole.
[0013] The beneficial effects of the utility model are:
[0014] 1. The utility model discloses a wheel shaft sleeve is fixed to the piano leg, the wheel screw rod on the wheel assembly is threadedly installed with the shaft sleeve screw hole in the inner side of the wheel shaft sleeve, and the depth of screwing is adjusted to adjust the height of the wheel assembly, so that the four wheel assemblies are in the same horizontal plane, then only need to tighten the fastening pin, so that the inner end of the fastening pin extends to the inner side of the shaft sleeve screw hole and locks the wheel screw rod, avoids its loosening, and simultaneously, the nut is screwed to be raised on the wheel screw rod by the thread effect, and is fastened below the wheel shaft sleeve, thereby, the relative rotation between the wheel screw rod and the wheel shaft sleeve is avoided to cause the height change, and the occurrence of unexpected situation is prevented.
[0015] 2. The utility model discloses that after loosening the fastening pin and the nut, the depth of the wheel screw rod relative to the wheel shaft sleeve can be changed by rotating the wheel screw rod, and the height adjustment of the wheel assembly is realized. DRAWINGS
[0016] Figure 1 It is the front view of the utility model;
[0017] Figure 2 It is the shaft sleeve screw hole schematic view of the utility model;
[0018] Figure 3 It is the mounting disc schematic view of the utility model.
[0019] 1, pin block axle sleeve; 2, pin block screw; 3, axle sleeve screw hole; 4, nut; 5, side screw hole; 6, fastening pin; 7, wheel seat; 8, wheel axle; 9, wheel body; 10, locking nut; 11, connecting disc; 12, mounting disc; 13, mounting hole. DETAILED DESCRIPTION
[0020] In order to deepen the understanding of the utility model, the utility model will be further described in the following combined with examples, and the examples are only used to explain the utility model and do not constitute the limitation of the protection scope of the utility model.
[0021] Example one
[0022] According to Figure 1 , 2 , 3, the example proposes a height-adjustable vertical piano pin block with anti-rotation function, which comprises a pin block axle sleeve 1 and a pin block assembly, a pin block screw 2 is arranged at the middle position of the upper side of the pin block assembly, the inner side of the pin block axle sleeve 1 is provided with an axle sleeve screw hole 3, and the pin block screw 2 is threadedly matched with the axle sleeve screw hole 3.
[0023] The outer side of the pin block screw 2 is provided with a nut 4, the nut 4 is threadedly matched with the pin block screw 2, the nut 4 is limited below the pin block axle sleeve 1, the lower side of one side of the pin block axle sleeve 1 is provided with a side screw hole 5, a fastening pin 6 is threadedly installed in the inner side of the side screw hole 5, and the inner end of the fastening pin 6 is used to extend to the inner side of the axle sleeve screw hole 3 and lock the pin block screw 2. When in use, the pin block axle sleeve 1 is fixed to the piano leg, the pin block screw 2 on the pin block assembly is threadedly installed in the axle sleeve screw hole 3 in the inner side of the pin block axle sleeve 1, the depth of screwing is adjusted to adjust the height of the pin block assembly, so that the four pin block assemblies are in the same horizontal plane, then the fastening pin 6 is tightened, so that the inner end of the fastening pin 6 extends to the inner side of the axle sleeve screw hole 3 and locks the pin block screw 2, avoiding loosening, at the same time, the nut 4 is screwed on the pin block screw 2 to rise up, and is fastened below the pin block axle sleeve 1, thereby avoiding the relative rotation between the pin block screw 2 and the pin block axle sleeve 1 to change the height.
[0024] The pin block assembly comprises a wheel seat 7, a wheel axle 8 and a wheel body 9, the wheel axle 8 is arranged in the inner side of the wheel seat 7, and the wheel body 9 is rotatably arranged in the outer side of the wheel axle 8. Both ends of the wheel axle 8 are provided with screw heads, the screw heads penetrate out of both ends of the wheel seat 7, and a locking nut 10 is threadedly installed on the screw head. When in use, the wheel body 9 is installed on the wheel axle 8, the screw heads at both ends of the wheel axle 8 penetrate out of both ends of the wheel seat 7, and are locked through the locking nut 10.
[0025] The upper rotary connection of the wheel seat 7 is provided with a connecting disc 11, and the pin block 2 is arranged at the middle position of the top of the connecting disc 11. The rotary connection between the connecting disc 11 and the wheel seat 7 enables the wheel seat 7 and the inner wheel body 9 to achieve the effect of universal rotation.
[0026] The caliber of the nut 4 is larger than the outer caliber of the pin block 2. The inner end of the fastening pin 6 is extended to the inner side of the pin hole 3 and locks the pin block 2 to avoid loosening, and the nut 4 is screwed on the pin block 2 to rise up by the thread effect, so that the nut 4 can be fastened below the pin block 2 to avoid the relative rotation between the pin block 2 and the pin block 1 to change the height.
[0027] Embodiment two
[0028] According to the above Figure 1 , 2 , 3, the embodiment provides a height-adjustable upright piano pin block with a rotation stopping function, which comprises a pin block 1 and a pin block assembly, the middle position of the upper part of the pin block assembly is provided with a pin block 2, the inner side of the pin block 1 is provided with a pin hole 3, and the pin block 2 is threadedly matched with the pin hole 3.
[0029] The outer side of the pin block 2 is provided with a nut 4, the nut 4 is threadedly matched with the pin block 2, the nut 4 is limited below the pin block 1, the lower side of one side of the pin block 1 is provided with a side pin hole 5, the inner side of the side pin hole 5 is threadedly installed with a fastening pin 6, and the inner end of the fastening pin 6 is used for extending to the inner side of the pin hole 3 and locking the pin block 2. In use, the pin block 1 is fixed to the piano leg, the pin block 2 on the pin block assembly is threadedly installed with the pin hole 3 on the inner side of the pin block 1, the depth of screwing is adjusted to adjust the height of the pin block assembly, so that the four pin block assemblies are in the same horizontal plane, then only the fastening pin 6 needs to be tightened, so that the inner end of the fastening pin 6 extends to the inner side of the pin hole 3 and locks the pin block 2 to avoid loosening, and the nut 4 is screwed on the pin block 2 to rise up by the thread effect and is fastened below the pin block 1, so that the relative rotation between the pin block 2 and the pin block 1 is avoided to change the height.
[0030] The lower side of the outer side of the pin block 1 is provided with a mounting disc 12, and the edge of the inside of the mounting disc 12 is provided with a mounting hole 13, and the mounting hole 13 is provided with three groups. The pin block 1 is used for being installed through the pin hole of the piano leg, and the mounting disc 12 is fixed to the piano leg through the mounting hole 13 and a cross slot countersunk head self-tapping screw. In use, the pin block 1 is installed through the pin hole of the piano leg, and the cross slot countersunk head self-tapping screw is fixed to the piano leg.
[0031] The height-adjustable piano wheel with anti-rotation function fixes the piano wheel shaft sleeve 1 to the piano leg, and screws the piano wheel screw rod 2 on the piano wheel assembly with the shaft sleeve screw hole 3 inside the piano wheel shaft sleeve 1, and adjusts the depth of the screwing to adjust the height of the piano wheel assembly, so that the four piano wheel assemblies are in the same horizontal plane, then only need to tighten the fastening pin 6, so that the inner end of the fastening pin 6 extends to the inside of the shaft sleeve screw hole 3 and locks the piano wheel screw rod 2, avoids loosening, at the same time, the nut 4 is screwed to rise on the piano wheel screw rod 2 by the threaded action, and is fastened below the piano wheel shaft sleeve 1, thereby, the relative rotation between the piano wheel screw rod 2 and the piano wheel shaft sleeve 1 is avoided to change the height, and the accidental situation is prevented. At the same time, after loosening the fastening pin 6 and the nut 4, the depth of the piano wheel screw rod 2 relative to the piano wheel shaft sleeve 1 can be changed by rotating the piano wheel screw rod 2, and the height adjustment of the piano wheel assembly is realized.
[0032] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and the utility model will have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. An adjustable height upright piano pinblock with anti-rotation function, comprising a pinblock shaft sleeve (1) and a pinblock assembly, characterized in that: The middle position above the wheel assembly is provided with a wheel screw (2), the inner side of the wheel shaft sleeve (1) is provided with a sleeve screw hole (3), the wheel screw (2) is threadedly matched with the sleeve screw hole (3); The outer side of the wheel screw (2) is provided with a nut (4), and the nut (4) is threadedly matched with the wheel screw (2), the nut (4) is limited below the wheel shaft sleeve (1), the lower side of one side of the wheel shaft sleeve (1) is provided with a side screw hole (5), and the inner side of the side screw hole (5) is threadedly installed with a fastening pin (6), the inner end of the fastening pin (6) is used for extending to the inner side of the sleeve screw hole (3) and locking the wheel screw (2).
2. The height-adjustable stand piano dolly with anti-rotation function according to claim 1, characterized in that: The wheel assembly comprises a wheel seat (7), a wheel shaft (8) and a wheel body (9), the wheel shaft (8) is arranged on the inner side of the wheel seat (7), and the wheel body (9) is rotatably arranged on the outer side of the wheel shaft (8).
3. The height adjustable vertical piano dolly with anti-rotation function according to claim 2, characterized in that: Both ends of the wheel shaft (8) are provided with screw heads, and the screw heads pass through both ends of the wheel seat (7), and the screw heads are threadedly installed with locking nuts (10).
4. The height-adjustable stand piano dolly with anti-rotation function according to claim 3, characterized in that: The upper side of the wheel seat (7) is rotatably connected with a connecting disc (11), and the wheel screw (2) is arranged at the middle position of the top of the connecting disc (11).
5. The height adjustable piano pin of claim 1, wherein: The caliber of the nut (4) is larger than the outer caliber of the wheel shaft sleeve (1).
6. The height adjustable piano pinblock with anti-rotation function of claim 1, wherein: The lower side of the outer side of the wheel shaft sleeve (1) is provided with a mounting disc (12), and the edge of the inner side of the mounting disc (12) is provided with a mounting hole (13), and the mounting hole (13) is provided with at least three groups.
7. The height adjustable piano pinblock with anti-rotation function as claimed in claim 6, wherein: The wheel shaft sleeve (1) is used for being installed through the sleeve hole of the foot, and the mounting disc (12) is fixed to the foot through the cross slot countersunk head self-tapping screw matched with the mounting hole (13).