Hybrid bumper assembly for a vehicle
AssigneeShape Corp.
InventorJoseph R. Matecki
Life of this patent
Estimating the term…
Abstract
A hybrid bumper assembly for a vehicle includes a steel reinforcement beam and aluminum crush cans attached to end portions of the steel reinforcement beam. The reinforcement beam has a multi-tubular shape that is formed by a high-strength steel sheet that is roll formed to provide at least two tubular portions. A crush can has an interfacing portion that is coupled to an end portion of the reinforcement beam. The end portions of the reinforcement beam and the interfacing portion of the crush cans may be configured to attach together using a select joining technology in a manner that minimizes or eliminates bimetallic or galvanic corrosion between the reinforcement beam and the crush cans.
Claims20
A hybrid bumper assembly for a vehicle, the hybrid bumper assembly comprising:
- a bumper reinforcement beam comprising a steel sheet material that forms a tubular shape having a wall section spanning along a length of the bumper reinforcement beam;
- a crush can comprising an aluminum alloy and having a tubular body and a flange at a front end of the tubular body;
- and
- a dual-material coupling feature comprising an adhesive disposed between the flange of the crush can and the wall section of the bumper reinforcement beam, the dual-material coupling feature configured to prevent galvanic corrosion between the bumper reinforcement beam and the crush can.
A hybrid bumper assembly for a vehicle, the hybrid bumper assembly comprising:
- a bumper reinforcement beam comprising a steel sheet forming at least one tubular shape that extends along a length of the bumper reinforcement beam;
- a pair of crush cans attached to opposing end portion of the bumper reinforcement beam, the pair of crush cans each comprising a tubular body and a flange extending from a front section the tubular body, the tubular body and the flange comprising an aluminum alloy;
- and
- a dual-material coupling feature comprising an adhesive disposed between the flange of each of the pair of crush cans and the steel sheet of the bumper reinforcement beam, the dual-material coupling feature configured to prevent galvanic corrosion between the bumper reinforcement beam and the pair of crush cans.
A hybrid bumper assembly for a vehicle, the hybrid bumper assembly comprising:
- a bumper reinforcement beam comprising a steel sheet forming a multi-tubular shape that extends along a length of the bumper reinforcement beam, wherein the multi-tubular shape comprises a top wall, a rear wall, and a bottom wall extending along the length of the bumper reinforcement beam;
- a crush can comprising a tubular body and a flange extending from a front section the tubular body, wherein the tubular body and the flange comprises an aluminum alloy;
- and
- an adhesive disposed between the flange of the crush can and at least one of the top wall, the rear wall, and the bottom wall of the bumper reinforcement beam, wherein the adhesive is configured to prevent galvanic corrosion between the steel sheet of the bumper reinforcement beam and the aluminum alloy of the crush can.
Dependencies are inferred from the claim text.