PROBLEM TO BE SOLVED: To provide a bumper beam that acquires sufficient energy absorption performance when a collision load in an oblique direction is inputted to an end part in a vehicle width direction.SOLUTION: A bumper beam 12 made of fiber-reinforced resin to be arranged along a vehicle width direction comprises a bumper beam main body 13 including a continuous fiber-reinforced resin layer having glass continuous fibers oriented in the vehicle width direction and in a direction orthogonal to the vehicle width direction and coupled with thermoplastic resin. On outer faces in a longitudinal direction of both end parts in the width direction of the main body 13 is provided an impact absorption portion 31 constituted of a honeycomb cell 31a having a shaft line extending in the longitudinal direction and a first reinforcement rib 31b supported from inside in the vehicle width direction. When a collision load F' in an oblique direction is inputted to an outer end part in the vehicle width direction of the bumper beam 12, the honeycomb cell 31a which receives the collision load first can be broken by pressure so as to absorb collision energy, and further so as to inhibit falling of the first reinforcement rib 31b toward inside in the vehicle width direction, which can accelerate the honeycomb cell 31a to be broken by pressure in the longitudinal direction so as to enhance collision energy absorption effect.SELECTED DRAWING: Figure 3
【課題】車幅方向端部に斜め方向の衝突荷重が入力したときに充分なエネルギー吸収性能を得るバンパービームの提供。【解決手段】車幅方向に沿って配置される繊維強化樹脂製のバンパービーム12が、ガラス連続繊維を車幅方向とそれに直交する方向とに配向して熱可塑性樹脂で結合した連続繊維強化樹脂層を含むバンパービーム本体13を備え、本体13の車幅方向両端部の前後方向外面に、前後方向に延びる軸線を有するハニカムセル31aと、車幅方向内側から支える第1補強リブ31bとからなる衝撃吸収部31を設け、バンパービーム12の車幅方向外端部に斜め方向の衝突荷重F′が入力したときに、最初に衝突荷重を受けるハニカムセル31aが圧壊して衝突エネルギーを吸収することができ、しかも第1補強リブ31bの車幅方向内側への倒れを阻止することで、ハニカムセル31aの前後方向の圧壊を促進して衝突エネルギーの吸収効果を高めることができる。【選択図】図3
BUMPER BEAM FOR AUTOMOBILE
自動車用バンパービーム
2016-05-23
Patent
Electronic Resource
Japanese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |