To provide an underrun protector of which weight saving can be promoted without reducing impact absorption performance.SOLUTION: This underrun protector has: a bumper beam 2 of a hollow square cross section of which both ends are opened; a thick part 4 formed at four corners of an opening 3 of the bumper beam 2; a cap screw hole 5 which is formed on the thick part 4 from the opening 3 so as not to penetrate an inner face of the bumper beam 2; and an end cap 8 which is mounted to the opening 3 of the bumper beam 2 by a bolt 6 which is screwed into the cap screw hole 5, has a convexed fitting part 7 which is inserted in the opening 3, and tightly closes the opening 3. When the bumper beam 2 receives an impact and is deformed, a part of an impact load F is absorbed by a repulsive force R2 of air which is compressed in association with reduction in an internal volume of the bumper beam 2.SELECTED DRAWING: Figure 1

    【課題】衝撃吸収性能を落とすことなく軽量化を推進できるアンダーランプロテクタを提供する。【解決手段】両端が開口された中空四角断面のバンパービーム2と、バンパービーム2の開口3の四隅に形成された厚肉部4と、厚肉部4に開口3からバンパービーム2の内面に貫通しないように形成されたキャップネジ穴5と、キャップネジ穴5にネジ込まれたボルト6でバンパービーム2の開口3に装着され、開口3に差し入れられる凸状の嵌合部7を有し、開口3を密閉するエンドキャップ8とを備え、バンパービーム2が衝撃を受けて変形したとき、バンパービーム2の内部容積の減少に伴って圧縮される空気の反発力R2によって衝撃荷重Fの一部を吸収する。【選択図】図1


    Access

    Download


    Export, share and cite



    Title :

    UNDERRUN PROTECTOR


    Additional title:

    アンダーランプロテクタ


    Contributors:

    Publication date :

    2019-06-20


    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



    UNDERRUN PROTECTOR ATTACHMENT STRUCTURE, UNDERRUN PROTECTOR BRACKET, AND UNDERRUN PROTECTOR

    YAMADA SHOJI / UKITA HIROYUKI / SERIZAWA HISANOBU | European Patent Office | 2016

    Free access

    UNDERRUN PROTECTOR

    YAMAGUCHI TETSUO / SERIZAWA HISANOBU / YAMADA SHOJI et al. | European Patent Office | 2019

    Free access

    UNDERRUN PROTECTOR

    SERIZAWA HISANOBU / YAMADA SHOJI / YAMAGUCHI TETSUO et al. | European Patent Office | 2019

    Free access

    UNDERRUN PROTECTOR ATTACHMENT STRUCTURE AND UNDERRUN PROTECTOR BRACKET

    YAMADA SHOJI / UKITA HIROYUKI / SERIZAWA HISANOBU | European Patent Office | 2016

    Free access

    Underrun Protector

    CHANDRASEKARAN SENTHIVINAYAGAM | European Patent Office | 2024

    Free access