The present invention relates to a sound absorber and a wheel having the same. The sound absorber (10) 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 (10) 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 (30). 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.
SOUND ABSORBER AND WHEEL HAVING SAME
SCHALLDÄMPFER UND RAD DAMIT
AMORTISSEUR DE SON ET ROUE LE COMPRENANT
2023-07-12
Patent
Electronic Resource
English
IPC: | B60B VEHICLE WHEELS , Räder für Fahrzeuge |
Sound absorber unit and wheel having sound absorbing device
European Patent Office | 2021
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