The present invention relates to a perforated plate having an improved shape of perforated holes to increase sound absorption and insulation efficiency and durability and a composite panel for sound absorption and insulation using the same. A perforated plate according to one embodiment of the present invention is a perforated plate used for a composite panel for sound absorption and insulation and comprises: a base part in the form of a plate; a first bent part bent in a predetermined area of the base part and extending obliquely to form a plurality of first perforated holes perforated in a thickness direction in the predetermined area of the base part; and a second bent part bent from the first bent part and extending obliquely to form second perforated holes extending from the first perforated holes, wherein the second bent part is bent to have a smaller angle to the base part than an angle of the first bent part to the base part.

    본 발명은 타공홀의 형상을 개선하여 흡차음 효율 및 내구성을 증대시킬 수 있는 타공판재 및 이를 이용한 흡차음 복합판재에 관한 것이다. 본 발명의 일 실시형태에 따른 타공판재는 흡차음용 복합판재에 사용되는 타공판재로서, 판재 형태의 베이스부와; 상기 베이스부의 소정 영역에서 두께방향으로 타공되어 형성되는 다수의 제 1 타공홀을 형성하도록 상기 베이스부의 소정 영역에서 절곡되어 경사지게 연장되는 제 1 절곡부와; 상기 제 1 타공홀에 연장되는 제 2 타공홀을 형성하도록 상기 제 1 절곡부에서 절곡되어 경사지게 연장되되, 상기 베이스부와 이루는 각도가 상기 제 1 절곡부가 상기 베이스부와 이루는 각도보다 작은 각도를 이루도록 절곡되는 제 2 절곡부를 포함한다.


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    Title :

    HOLEY PLATE AND COMPOSITE PANEL FOR SOUND ABSOPTION AND SOUND INSULATION USING THE SAME


    Additional title:

    타공판재 및 이를 이용한 흡차음 복합판재


    Contributors:
    SIM JAE GI (author) / KIM HONG JAE (author) / RYU JONG HYUN (author)

    Publication date :

    2021-06-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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