To provide a sound insulation panel for an automobile, that is suitable for reducing the weight of the sound insulation panel, expanding the frequency band which can insulate sound, and improving the sound insulation performance, as well as, that has excellent deformability (three-dimensional degree of freedom) capable of flexibly coping with the three-dimensional unevenness of the surface when the sound insulation panel is installed on the surface that requires sound insulation of an automobile.SOLUTION: A sound insulation panel S1 for an automobile comprises: a sound absorbing panel material P1 forming a sound absorbing layer 1; a surface panel material P2 forming a surface layer 2 on the sound absorbing layer; and a plurality of elastic bodies E forming an elastic layer 3 between the sound absorbing layer and the surface layer. The sound absorbing panel material comprises: a plurality of accommodating space portions 4 deformably provided along the unevenness of a surface requiring sound insulation of the automobile, and opened toward the surface panel material. A portion in a range facing an opening of the accommodating space in the surface panel material functions as a first vibrating film 5. Each elastic body E has a recess 6 arranged in the accommodating space, and a bottom of the recess functions as a second vibrating film 7.SELECTED DRAWING: Figure 1

    【課題】遮音パネルの軽量化、遮音可能な周波数帯の拡張、遮音性能の向上を図るのに好適で、かつ、自動車の遮音を要する面に設置したときの該面の立体的な凹凸に柔軟に対応し得る変形性(立体的自由度)に優れた自動車用遮音パネルを提供する。【解決手段】自動車用遮音パネルS1は、吸音層1を形成する吸音パネル材P1と、吸音層上に表面層2を形成する表面パネル材P2と、吸音層と表面層との間に弾性層3を形成する複数の弾性体Eと、を備え、吸音パネル材は、自動車の遮音を要する面の凹凸に沿って変形可能に設けられるとともに、表面パネル材に向って開口した複数の収容空間部4を有し、表面パネル材は、収容空間部の開口と対向する範囲が第1の振動膜4として機能し、各弾性体Eは、収容空間部内に配置される凹部6を有し、該凹部の底が第2の振動膜7として機能する。【選択図】図1


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    Title :

    SOUND INSULATION PANEL FOR AUTOMOBILE


    Additional title:

    自動車用遮音パネル


    Contributors:

    Publication date :

    2021-09-27


    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 / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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