To provide a vehicular silencer enabling improvement a function thereof which is exerted.SOLUTION: A vehicular silencer 1 includes: a sound insulation material layer 10 which has a first surface 11 and a second surface 12 at the opposite side of the first surface 11, and is formed of elastic material 70; and an acoustic absorption material layer 20 formed of material 80 having a void V1 and joined to the second surface 12. The sound insulation material layer 10 comprises: a function portion 30 which includes a protrusion portion 40 protruding toward the opposite side of the acoustic absorption material layer 20, on the first surface 11 and a shape changing portion 50 existing at a position corresponding to the protruding portion 40, on the second surface 12; and a general portion 60 positioned around the function portion 30. The shape changing portion 50 is formed in at least either shape of a convex shape and a concave shape. A thickness of at least a part of the function portion 30 is different from a thickness T1 of the general portion 60.SELECTED DRAWING: Figure 2

    【課題】発揮する機能を高めることが可能な車両用サイレンサーを提供する。【解決手段】車両用サイレンサー1は、第一の面11、及び、該第一の面11とは反対側の第二の面12を有し弾性を示す材料70で成形された遮音材層10と、空隙V1を有する材料80で形成され第二の面12に接合された吸音材層20と、を含む。遮音材層10は、第一の面11において吸音材層20とは反対側へ突出した突出部40と、第二の面12において突出部40に対応する位置に存在する形状変更部50と、を含む機能部30と、該機能部30の周囲にある一般部60と、を備える。形状変更部50は、凸状と凹状の少なくとも一方の形状である。機能部30の少なくとも一部の厚さは、一般部60の厚さT1とは異なる。【選択図】図2


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    Title :

    VEHICULAR SILENCER, AND, MANUFACTURING METHOD THEREOF


    Additional title:

    車両用サイレンサー、及び、その製造方法


    Contributors:

    Publication date :

    2023-08-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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