| 摘要 |
An objective of the present invention is to provide a noise-reducing wheel for a vehicle which has a sound-absorbing material on an outer surface of a wheel supporting a tire to distribute and support the weight of a vehicle and a hub portion coming in contact with a rim to block noise produced by coming in contact with a road surface and noise produced in a lower side of the vehicle from transferring into the vehicle through the wheel to improve riding comfort and provide a comfortable indoor space. Specifically, another objective of the present invention is to provide a noise-reducing wheel for a vehicle which has polyurethane foam formed by foaming as a sound absorbing material to use a conventional foaming technique of polyurethane foam to easily manufacture the sound absorbing material and block noise from transferring through the wheel to improve riding comfort and provide a comfortable indoor space. Also, another objective of the present invention is to provide a noise-reducing wheel for a vehicle which uses the polyurethane foam with a density of 200-300 g/m^3 to foam and form the sound absorbing material in a thickness of 3-4 mm to increase a blocking effect of noise entering an indoor space through the tire in comparison to a weight increase. |
