Low-noise polyurethane tire
By using annular array wave-shaped elastic connectors and hexagonal honeycomb micro-damping chambers in the tires, the problem of high tire vibration and noise is solved, achieving low noise and shock absorption effects, and improving vehicle comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-26
- Publication Date
- 2026-03-27
AI Technical Summary
Existing polyurethane tires lack an effective cushioning structure between the rim and hub, resulting in high vibration and noise. Furthermore, the solid tire body lacks effective sound absorption and noise reduction design, affecting in-vehicle comfort.
The rim and hub are connected by multiple wave-shaped elastic connectors arranged in a ring array, and hexagonal honeycomb micro-damping chambers are set inside the solid tire carcass. The elastic connectors and micro-damping chambers work together to absorb and disperse vibration energy and reduce noise.
It effectively reduces noise caused by vibration, improves the quietness and comfort of vehicle driving, and achieves low noise effect through a multi-level noise reduction system.
Smart Images
Figure CN224044970U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of tire, especially a low noise polyurethane tire. BACKGROUND
[0002] The rim and the hub of the existing polyurethane tire are usually connected in a rigid manner, lacking effective buffering structure. During the rolling of the tire, the impact force generated by the uneven road surface will be directly transmitted to the hub through the rim, thereby causing the overall vibration of the tire. This rigid vibration will generate a large noise in the tire, and the noise level will increase significantly with the increase of the vehicle speed, seriously affecting the comfort of the driver and the passenger in the vehicle.
[0003] Secondly, the inner part of the solid polyurethane carcass is mostly solid structure or simple hollow structure, lacking effective sound absorption and noise reduction design. When the tire is rubbed with the ground and impacted, the noise generated will be reflected and propagated in the carcass, which is difficult to be effectively absorbed and dissipated, resulting in a large rolling noise of the tire. SUMMARY
[0004] The utility model aims at providing a low noise polyurethane tire, which improves the noise reduction effect of the existing polyurethane tire.
[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a low noise polyurethane tire, comprising a hub, a rim and a solid polyurethane carcass, the solid polyurethane carcass is sleeved on the outer side of the rim, the hub is arranged at the center position of the rim, the rim and the hub are connected through a plurality of elastic connecting pieces arranged in a ring array, the elastic connecting piece is in a wave shape structure, and its two ends are fixedly connected with the inner side wall of the rim and the outer side wall of the hub respectively.
[0006] Preferably, the elastic connecting piece is in a sheet structure, and two layers of elastic connecting pieces arranged in a ring array are arranged between the hub and the rim, wherein the wave bending direction of one layer of elastic connecting pieces is opposite to that of the other layer of elastic connecting pieces, and a gap is left between the two layers of elastic connecting pieces. The multiple layers of reversely bent elastic connecting pieces can cope with impact forces of different directions and sizes from multiple angles, providing more comprehensive buffering effect.
[0007] Preferably, the connection positions of the elastic connecting piece with the hub and the rim are staggered in the circumferential direction of the tire, so as to make the elastic connecting piece be inclinedly connected between the hub and the rim. The inclined connection changes the stress direction and deformation mode of the elastic connecting piece, so that it can produce more complex elastic deformation when subjected to impact force, thereby improving the shock absorption efficiency of the tire.
[0008] Preferably, a plurality of circular holes arranged in a ring array are arranged on the surface of the hub, which facilitates the installation of the tire.
[0009] Preferably, one side of the wheel hub is covered with a decorative cover, the decorative cover is shaped to match the profile of the corresponding side of the wheel hub, and the decorative cover protects the wheel hub to some extent and prevents dust and sundries from entering the interior of the wheel hub.
[0010] Preferably, the outer surface of the solid polyurethane tire body is uniformly provided with anti-skid lines, which increase the friction between the tire and the ground and improve the anti-skid performance of the tire.
[0011] Preferably, a plurality of micro shock absorption chambers are uniformly distributed along the tire circumferential direction inside the solid polyurethane tire body, and the micro shock absorption chambers are arranged in a hexagonal honeycomb structure. The porous structure of the micro shock absorption chamber can absorb and disperse vibration energy, reduce the transmission of vibration to the wheel hub, and simultaneously reflect, scatter and absorb sound waves, thereby reducing the noise generated during tire rolling.
[0012] Compared with the prior art, the utility model has the following advantages:
[0013] 1. The utility model discloses a plurality of wave-shaped elastic connecting pieces are arranged in an annular array to connect the wheel rim and the wheel hub. The wave-shaped structure endows the elastic connecting piece with good elastic buffering characteristics. During tire rolling, when the tire is impacted by the ground, the elastic connecting piece can absorb and disperse vibration energy through its elastic deformation, effectively reducing the transmission of vibration to the wheel hub, thereby reducing the noise generated by vibration.
[0014] 2. The utility model discloses that a plurality of micro shock absorption chambers arranged in a hexagonal honeycomb structure are uniformly distributed along the tire circumferential direction inside the solid polyurethane tire body. When noise is generated during tire rolling, the noise sound wave enters the interior of the solid polyurethane tire body. The porous structure of the micro shock absorption chamber can reflect, scatter and absorb sound waves multiple times, further reducing tire rolling noise. In combination with the elastic connecting piece, a multi-level noise reduction system is formed, providing a quiet and comfortable driving environment for vehicles. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 It is a schematic diagram of the overall structure of the utility model.
[0016] Fig. 2 It is a schematic diagram of the wheel rim structure of the utility model.
[0017] Fig. 3 It is a sectional view of the solid polyurethane tire body structure of the utility model.
[0018] Fig. 4 It is a sectional view of the wheel rim structure of the utility model.
[0019] The drawings show that: 1, the wheel hub; 2, the wheel rim; 3, the solid polyurethane tire body; 4, the elastic connecting piece; 5, the round hole; 6, the decorative cover; 7, the anti-skid line; 8, the micro shock absorption chamber. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.
[0021] Please refer to Figs. 1 to 4 The embodiment provides a low-noise polyurethane tire, which comprises a hub 1, a rim 2 and a solid polyurethane tire body 3, the solid polyurethane tire body 3 is sleeved on the outer side of the rim 2, the hub 1 is arranged at the center position of the rim 2, the rim 2 and the hub 1 are connected through a plurality of elastic connecting pieces 4 arranged in a ring array, the elastic connecting piece 4 is in a wave shape structure, and the two ends of the elastic connecting piece 4 are fixedly connected with the inner side wall of the rim 2 and the outer side wall of the hub 1 respectively.
[0022] When the tire encounters an impact force due to uneven road surface during driving, the impact force first acts on the solid polyurethane tire body 3 and then is transmitted to the rim 2, since the rim 2 and the hub 1 are connected through a plurality of wave-shaped elastic connecting pieces 4 arranged in a ring array, the elastic connecting piece 4 will be elastically deformed, the wave-shaped structure gives the elastic connecting piece 4 a large deformation space and elastic recovery capacity, and the elastic connecting piece 4 can absorb and disperse the vibration energy generated by the impact force, so that the vibration is not directly and quickly transmitted to the hub 1, thereby reducing the noise caused by the vibration and achieving the preliminary low-noise and shock-absorbing effect.
[0023] The elastic connecting piece 4 is in a sheet shape structure and is arranged between the hub 1 and the rim 2, and two layers of elastic connecting pieces 4 arranged in a ring array are arranged, wherein the wave bending direction of one layer of elastic connecting pieces 4 is opposite to that of the other layer of elastic connecting pieces 4, and a gap is left between the two layers of elastic connecting pieces 4.
[0024] When the tire is subjected to an impact force, the two layers of elastic connecting pieces 4 simultaneously play a role, since the wave bending directions of the two layers of elastic connecting pieces 4 are opposite, different buffering effects can be produced for vibration components in different directions, and the two layers of elastic connecting pieces 4 cooperate with each other to absorb and disperse vibration energy.
[0025] The connection positions of the elastic connecting piece 4 and the hub 1 and the connection positions of the elastic connecting piece 4 and the rim 2 are staggered in the circumferential direction of the tire, so as to make the elastic connecting piece 4 be inclinedly connected between the hub 1 and the rim 2.
[0026] When the tire is subjected to an impact force, the inclined elastic connecting piece 4 will not only produce elastic deformation in the direction perpendicular to the connection direction, but also produce a certain torsional and tensile deformation in the inclined direction, and such multi-directional deformation can more fully absorb and disperse vibration energy, compared with the vertically connected elastic connecting piece 4, the inclined connection mode can increase the deformation amount of the elastic connecting piece 4, so that the elastic connecting piece 4 can absorb more energy under the same impact force.
[0027] The hub 1 is provided with a plurality of circular holes 5 arranged in a ring array, which facilitates the installation of the hub 1.
[0028] The hub 1 is provided with a plurality of circular holes 5 arranged in a ring array, which facilitates the installation of the hub 1.
[0029] The outer surface of the solid polyurethane tire body 3 is uniformly provided with anti-skid lines 7, which increases the friction between the tire and the ground and improves the anti-skid performance of the tire.
[0030] The solid polyurethane tire body 3 is uniformly provided with a plurality of micro shock absorption chambers 8 along the circumferential direction of the tire, which are arranged in a hexagonal honeycomb structure. When the tire is subjected to an impact force, the impact force is transmitted to the inside of the solid polyurethane tire body 3, and the micro shock absorption chambers 8 will deform. The hexagonal honeycomb structure has good mechanical properties and energy absorption characteristics, which can uniformly disperse the impact force into each chamber and absorb and consume vibration energy through the deformation of the chamber. When the tire rolls and produces noise, the noise sound waves enter the inside of the micro shock absorption chambers 8 and will be reflected and scattered multiple times between the chamber walls of the hexagonal honeycomb structure. Part of the sound wave energy will be absorbed by the chamber walls, thereby reducing the intensity of the noise.
[0031] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A low noise polyurethane tire comprising a hub (1), a rim (2) and a solid polyurethane carcass (3) which is fitted on the outer side of the rim (2), the hub (1) being disposed at the center of the rim (2), characterized in that, The rim (2) and the hub (1) are connected by a plurality of elastic connectors (4) arranged in a ring array, the elastic connectors (4) are in a wave shape structure, and the two ends thereof are fixedly connected with the inner side wall of the rim (2) and the outer side wall of the hub (1) respectively.
2. The low noise polyurethane tire of claim 1, wherein, The elastic connectors (4) are in a sheet shape structure, and two layers of elastic connectors (4) arranged in a ring array are arranged between the hub (1) and the rim (2), wherein the wave bending direction of one layer of elastic connectors (4) is opposite to that of the other layer of elastic connectors (4), and a gap is left between the two layers of elastic connectors (4).
3. The low noise polyurethane tire of claim 2, wherein, The connection positions of the elastic connectors (4) with the hub (1) and the rim (2) are staggered in the circumferential direction of the tire, for tilting the elastic connectors (4) to be connected between the hub (1) and the rim (2).
4. The low noise polyurethane tire of claim 1, wherein, A plurality of circular holes (5) arranged in a ring array are arranged on the surface of the hub (1).
5. The low noise polyurethane tire of claim 1, wherein, A decorative cover (6) is arranged on one side of the hub (1), and the shape of the decorative cover (6) is adapted to the profile of the corresponding side of the hub (1).
6. The low noise polyurethane tire of claim 1, wherein, The outer surface of the solid polyurethane carcass (3) is uniformly provided with anti-skid lines (7).
7. The low noise polyurethane tire of claim 1, wherein, A plurality of micro shock absorption chambers (8) are uniformly distributed in the circumferential direction of the tire inside the solid polyurethane carcass (3), and the micro shock absorption chambers (8) are arranged in a hexagonal honeycomb structure.