| 摘要 |
A bumper system (20) for vehicles includes a B-shaped tubular bumper beam (21) with top (23) and bottom (24) mid-walls defining a channel (25) in its front surface (26). A polymeric energy absorber (22) has multiple box-shaped sections (27) that abut the front surface (26) of the bumper beam 921) and further includes rearwardly-extending nose sections (28) that extend into the channel (25). The nose sections (28) include collapse-controlling kick walls (30,31) that lie along the top (23) and bottom (24) mid-walls and that are connected to the box-shaped sections (27). Upon impact by an object against the bumper system (20), the kick walls (30),31) press into the top (23) and bottom (24) midwalls, resulting in a consistent and controlled collapse of the energy absorber (22) and tubes of the bumper beam (21).
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