A vehicle wheel guard of the present invention includes a sound absorption material formed of multiple layers of polyurethane foam having different levels of density, and upper and lower base materials placed in upper and lower parts of the sound absorption material, wherein the sound absorption material can have a structure in which second polyurethane foam different in density from first polyurethane foam is interposed between layers of the first polyurethane foam having the same density, or can have a structure in which layers of the first to third polyurethane foam having density becoming gradually lower while going upward are stacked. The vehicle wheel guard can also include the third polyurethane foam having the same density as the first polyurethane foam, provided in the second polyurethane foam. The first polyurethane foam has density higher than that of the second polyurethane foam, and the structure can be stacked at least once. Therefore, the present invention is capable of preventing noise and vibrations from being conveyed to the interior of a vehicle.

    본 발명의 차량용 휠 가드는 서로 다른 밀도를 갖는 다층의 폴리우레탄 발포체로 구성된 흡음재 및 상기 흡음재 상, 하부에 배치되는 상, 하부 기재를 포함하되, 상기 흡음재는 동일한 밀도를 갖는 제1폴리우레탄 발포체사이에 상기 제1폴리우레탄 발포체와는 다른 밀도를 갖는 제2폴리우레탄 발포체가 개재된 구조물을 갖거나 또는 상측으로 갈수록 밀도가 감소하는 제1 내지 제3폴리우레탄 발포체가 적층된 구조물을 가질 수 있다. 상기 자동차용 휠 가드는 상기 제2폴리우레탄 발포체내부에 구비되는, 상기 제1폴리우레탄 발포체와 동일한 밀도를 갖는 제3폴리우체탄 발포체를 더 포함할 수 있다. 상기 제1폴리우레탄 발포체가 상기 제2폴리우레탄 발포체보다 높은 밀도를 갖으며, 상기 구조물이 1회이상 적층될 수 있다.


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    Title :

    Wheel guard for vehicles


    Additional title:

    자동차용 휠 가드


    Contributors:
    YOOK YEONG SOO (author) / KO EUN JONG (author) / KIM JAE CHOUL (author) / KIM MIN SU (author) / AHN BYUNG IL (author)

    Publication date :

    2022-05-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / 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 / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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