A vehicular compartment sound proofing structure includes a partition member 12 that partitions the vehicular compartment, a sound absorbing layer 14 having spaces therein, an air impermeable layer 30 made of air impermeable material, and a compressed fiber layer 32A mainly formed of a compressed mass of fibers. Connection strength between the compressed fiber layer 32A and the air impermeable layer 30 is lower than connection strength between the air impermeable layer 30 and the sound absorbing layer 14. Accordingly, antiresonance arises between resonance due to the resonance transmission and resonance by stretching of the sound absorbing layer 14 (refer to 10A). This improves insertion loss in the middle frequency band and soundproofing performance with respect to sound in the middle frequency band is improved.


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    Titel :

    VEHICULAR COMPARTMENT SOUNDPROOFING STRUCTURE


    Beteiligte:
    NAGANO MASAHIRO (Autor:in) / WATANABE YUJI (Autor:in) / KAWAMURA HIROSHI (Autor:in)

    Erscheinungsdatum :

    07.08.2025


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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