To efficiently absorb and attenuate, in a manner stable for a long time period, load noises generated between a tire and a road surface and emitted in an undercover direction.SOLUTION: A vehicular sound absorption structure includes a unit storage space 11a, an undercover main body 4a, front side frames 15, and sound absorption components 21. A power unit P/U of a vehicle M is stored in the unit storage space 11a. The undercover main body 4a covers at least the lower surface of the unit storage space 11a. The front side frames 15 are placed at respective sides of the unit storage space 11a in a vehicle widthwise direction. The sound absorption components 21 are placed at respective sides of the unit storage space 11a in the vehicle widthwise direction in such a way that respective upper ends are positioned below the respective side frames 15. A hole 4d is formed in the undercover main body 4a at an intersection portion where at least internal grounding ends of tires 2l and 2r are linearly connected to the respective sound absorption components 21.SELECTED DRAWING: Figure 5

    【課題】タイヤと路面との間で発生しアンダカバー方向へ放射されるロードノイズを、長期的に安定して効率良く吸音し減衰させることができるようにする。【解決手段】車両の吸音構造は、ユニット収容空間11aとアンダカバー本体部4aとフロントサイドフレーム15と吸音部21とを備える。ユニット収容空間11aに車両MのパワーユニットP/Uが収容され、アンダカバー本体部4aは少なくともユニット収容空間11aの下面を覆い、フロントサイドフレーム15はユニット収容空間11aの車幅方向両側に配設され、吸音部21はユニット収容空間11aの車幅方向両側であって上端がフロントサイドフレーム15の下方に配置されており、アンダカバー本体部4aの、少なくともタイヤ2l,2rの内側の接地端と吸音部21とを直線的に結んだ際の交差部分に孔部4dが設けられている。【選択図】図5


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    Title :

    VEHICULAR SOUND ABSORPTION STRUCTURE


    Additional title:

    車両の吸音構造


    Contributors:

    Publication date :

    2023-02-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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