Sound absorber and wheel having same
US11951778B2 · kind B2 · utility
0Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2020 |
| Grant date | Apr 9, 2024 |
| Priority date | — |
| Expiry date | Apr 23, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60B2900/133
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A sound absorber is configured as a rectangular hexahedral box and forms a porous double-layer Helmholtz resonance sound absorbing structure, at the same time, the sound absorber in the form of a box forms a structural resonance sound absorbing device itself, and the first-order natural mode frequency of the device is identical to that of a wheel air chamber. When the box-type sound absorbing structure is assembled in a wheel, double functions of absorbing acoustic resonance of the wheel air chamber under the organic combination of Helmholtz resonance sound absorption and structural resonance sound absorption can be realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.