To provide a vehicular molded ceiling material which can adjust sound absorption performance according to sound absorption properties different depending on vehicles.SOLUTION: Vehicular molded ceiling materials 10, 20 each have a planar base material layer 2 containing a porous core material 6 and a skin material 4 laminated on a plane on a cabin inner side of the base material layer 2, and comprises ventilation control mechanisms 5, 21 constituted to be capable of adjusting a ventilation amount ventilating from a plane on a cabin inner side of the skin material 4 to the base material layer 2. Sound generated in the cabin can be absorbed by the base material layer 2 via the ventilation control mechanisms 5, 21. The ventilation control mechanisms 5, 21 increase a ventilation amount into the base material layer 2 in the case of raising a sound absorption coefficient and decreases the ventilation amount into the base material layer 2 in the case of lowering the sound absorption coefficient. Thus, the vehicular molded ceiling materials 10, 20 equipped with a ventilation control function can be constituted, so that the sound absorption coefficients of the vehicular molded ceiling materials 10, 20 can be adjusted according to sound absorption properties different depending on vehicles.SELECTED DRAWING: Figure 1

    【課題】車両によって異なる吸音特性に応じて、吸音性能を調整できる車両用成形天井材を提供する。【解決手段】車両用成形天井材10,20は、多孔質の芯材6を含んだ面形状の基材層2と、基材層2の車室内側の面に積層された表皮材4とを有し、表皮材4の車室内側の面から基材層2に向けて通気する通気量を調整可能に構成される通気コントロール機構5,21を備える。車室内で発生する音は通気コントロール機構5,21を介して、基材層2によって吸音され得る。通気コントロール機構5,21は、吸音率を上げる場合には基材層2への通気量を増やし、吸音率を下げる場合には基材層2への通気量を減らすことができる。これにより、通気コントロール機能を備えた車両用成形天井材10,20を構成することができ、車両によって異なる吸音特性に応じて車両用成形天井材10,20の吸音率を調整できる。【選択図】図1


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    Title :

    VEHICULAR MOLDED CEILING MATERIAL


    Additional title:

    車両用成形天井材


    Contributors:

    Publication date :

    2024-10-31


    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 / 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



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