SOUND ABSORBER UNIT AND WHEEL WITH SOUND ABSORBER DEVICE

    公开(公告)号:EP4000949A1

    公开(公告)日:2022-05-25

    申请号:EP21156443.0

    申请日:2021-02-10

    IPC分类号: B60B21/12

    摘要: The present application relates to a sound absorber unit and a vehicle wheel having a sound absorber comprising at least one sound absorber unit or at least one sound absorber module which is composed of a plurality of sound absorber units as a whole. The sound absorber unit is constructed into a box body in a hexahedron shape, a three-layer Helmholtz resonance sound absorption structure with double holes and single holes combined is formed, and meanwhile, the sound absorber unit or the sound absorber assembly forms a structural resonance sound absorber. According to the application, the double-absorption wheel air chamber sound resonance function organically combining Helmholtz resonance sound absorption and structural resonance sound absorption can be realized.

    WHEEL WITH A SOUND ABSORBING DEVICE
    3.
    发明公开

    公开(公告)号:EP4000948A1

    公开(公告)日:2022-05-25

    申请号:EP21156442.2

    申请日:2021-02-10

    IPC分类号: B60B21/12

    摘要: The application relates to a wheel with a sound absorption device, wherein the sound absorption device (10) is arranged in a wheel air chamber (30) to reduce acoustic resonance, the sound absorption device comprises two resonance sound absorption structure units which are connected in parallel, a first sound absorption frequency band of a first resonance sound absorption structure unit (10-1) and a second sound absorption frequency band of a second resonance sound absorption structure unit (10-2) are adjacent to each other or partially overlap with each other, and the resonance frequency of the wheel air chamber is contained at the adjacent part of the first sound absorption frequency band and the second sound absorption frequency band or in the overlapping area of the first sound absorption frequency band and the second sound absorption frequency band.