US 6,712,411 B2 · Bumper device for vehicles and bumper stay

Abstract

A bumper device can reduce a weight of a reinforcement member more than a weight of a conventional reinforcement member while sufficiently absorbing a given impact energy. A size “b” between both side mounting portions where the reinforcement member is mounted on a stay is set greater than a size “a” between both side longitudinal wall portions of a side frame, both outer longitudinal walls of the stay are inclined such that both outer longitudinal walls are opened toward the reinforcement member, and the distance between the inner longitudinal walls is set substantially equal to the distance between the both side longitudinal wall portions of the side frame.

Claims5

Dependent claims

A bumper stay being arranged between a reinforcement member extending in the widthwise direction of a vehicle and a side frame at a vehicle body side,

the bumper stay being formed of an extruded member made of aluminum alloy material, and includes a front wall portion and a rear wall portion which extend in the widthwise direction of the vehicle and are spaced apart from each other and at least four ribs which connect the front and rear wall portions, the ribs form at least three hollow portions, the front wall portion is longer than the rear wall portion in the widthwise direction of the vehicle and thus forming mounting lugs for the reinforcement member at both sides thereof, and the at least four ribs including at least two inner ribs inclined inwardly and at least two outer ribs inclined outwardly, the distance between the two inner ribs adjacent the rear wall portion being substantially equal to a width between longitudinally extending side wall portions of the side frame.

Dependencies are inferred from the claim text.

Bumper device for vehicles and bumper stay

Life of this patent

Bumper device for vehicles and bumper stay

Life of this patent

Abstract

Claims5