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
UNDERRUN PROTECTOR
アンダーランプロテクタ
2019-06-20
Patent
Electronic Resource
Japanese
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
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|UNDERRUN PROTECTOR ATTACHMENT STRUCTURE AND UNDERRUN PROTECTOR BRACKET
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