To provide a sound absorption structure that can easily increase sound absorption in low frequency range while maintaining a compact structure.SOLUTION: A sound absorption structure 10 comprises a plurality of sound-absorbing layers 20 having, for one layer, a counter wall 30 that is positioned opposite to a noise source S, and a plurality of resonance conduits 43 that are aligned in a width direction of a counter wall surface 31 of the counter wall 30 and have conduit lengths different from each other. The plurality of sound-absorbing layers 20 are stacked in contact with each other in a plane direction T of the facing wall surface 31 of the facing wall 30. In each of sound absorbing layers 21, 22, 23, the plurality of resonance conduits 43 are each partitioned from each of adjacent other resonance conduits 43 by a partition wall 41, with one of the conduits closed in a waveguide direction C and the other open.SELECTED DRAWING: Figure 1

    【課題】コンパクトな構成としつつ低音域での吸音力を容易に高められる吸音構造体を提供する。【解決手段】吸音構造体10は、騒音発生源Sに対向配置される対向壁30と、対向壁30の対向壁面31の幅方向に並んで配置されるとともに互いに管路長が異なる複数の共鳴管路43と、を一の層に対して有する複数の吸音層20を備える。複数の吸音層20は、対向壁30の対向壁面31の面直方向Tにて相互に接触した状態で積層されている。各吸音層21、22、23は、複数の共鳴管路43が、隣接する他の共鳴管路43との間が区画壁41で区画されるとともに管路の導波方向Cでの一方が閉塞され他方が開口されている。【選択図】図1


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    Titel :

    SOUND ABSORPTION STRUCTURE


    Weitere Titelangaben:

    吸音構造体


    Beteiligte:
    SAMATA MOEMI (Autor:in) / TOYOSHIMA KENICHI (Autor:in) / MIURA SUSUMU (Autor:in)

    Erscheinungsdatum :

    10.11.2023


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B62D MOTOR VEHICLES , Motorfahrzeuge




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