To provide a sound insulation structure which can improve sound insulation while suppressing weight increase and cost increase.SOLUTION: A sound insulating member 10 includes a mass portion 11 and a spring portion 12. The mass portions are arranged at intervals with respect to an outer panel 5 which separates an internal space of the vehicle body from outside, and have a planar shape at least in part. A plurality of spring portions are arranged on the side facing the outer panel of the mass portion. The spring portion has a hollow membrane material 14 having airtightness and flexibility, and gas 15 sealed inside the membrane material. The membrane material has a first stepped portion 14b and a second stepped portion 14c formed in a stepped manner with respect to the arrangement direction of the outer panel and the mass portion.SELECTED DRAWING: Figure 6

    【課題】重量増加、コストの上昇を抑えつつ、遮音性を高めることのできる遮音構造を提供する。【解決手段】遮音部材10は、マス部11と、バネ部12とを備える。マス部は、車体の内部空間と外部とを区画するアウターパネル5に対して間隔をあけて配置され、少なくとも一部に平面形状を有する。バネ部は、マス部においてアウターパネルに対向する側に複数配置されている。バネ部は、気密性及び可撓性を有した中空の膜材14と、膜材の内部に封入されたガス15とを有する。膜材は、アウターパネルとマス部の配列方向に対して段つき形成された第1段付き部14b及び第2段付き部14cを有する。【選択図】図6


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    Title :

    SOUND INSULATION STRUCTURE


    Additional title:

    遮音構造


    Contributors:

    Publication date :

    2020-09-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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