To increase a sound absorption efficiency of a sound absorption member which absorbs noise outside a vehicle, invading from an extractor opening and transmitting in a cabin.SOLUTION: There are provided: a ventilation opening 88 for discharging air in cabins 2,3 to the outside of the cabins, in an interior wall 8 of the cabin 3; and an extractor opening 14 for discharging discharged air to the outside of the cabins 2,3 to the outside of a vehicle, in an exterior wall 6 of a vehicle body. A ventilation space 30 for communicating the ventilation opening 88 and the extractor opening 14 is provided between the cabin interior wall 8 and the vehicle body exterior wall 6, and a sound absorption member 20 extending between the ventilation opening 88 and the extractor opening 14 is arranged in the ventilation space 30. There are formed closed cross section ventilation passages 24A,25A whose cross sections in a direction orthogonal to a direction in which the sound absorption member 20 extends becomes closed cross sections surrounded by the sound absorption member 20 in the whole circumferences.SELECTED DRAWING: Figure 3

    【課題】エキストラクタ開口から侵入し、車室内に伝播する車外の騒音を吸音する吸音部材の吸音効率を高めること。【解決手段】車室3の内壁8に、車室2,3の空気を車室外へ排出する通気用開口88が設けられ、車体の外壁6に、車室2,3外へ排出した空気を車外へ排出するエキストラクタ開口14が設けられ、車室内壁8と車体外壁6との間には、通気用開口88とエキストラクタ開口14とを連通する通気空間30が設けられ、通気空間30には、通気用開口88とエキストラクタ開口14との間に延びる吸音部材20が配設され、該吸音部材20が延びる方向に直交する方向の断面が該吸音部材20によって全周が囲まれた閉断面となる閉断面通気経路24A,25Aを形成した。【選択図】図3


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    Title :

    SOUND ABSORPTION STRUCTURE OF VEHICLE


    Additional title:

    車両の吸音構造


    Contributors:

    Publication date :

    2018-12-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B62D MOTOR VEHICLES , Motorfahrzeuge



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