Patent ID: 7543865

Claim:
A vehicle bumper device, comprising: a bumper cover; a crash box adapted to be connected to a vehicle; a bumper reinforcement connected via a mounting plate member to the crash box provided along a width direction of the vehicle between the crash box and the bumper cover, the bumper reinforcement including: an impact surface; wherein the impact surface comprises a planar upper range portion and a planar lower range portion at respective end regions of the impact surface, the upper range portion and the lower range portion being spaced a first distance away from the vehicle, and an adjacent stepped intermediate range portion in a central region of the impact surface, and having a planar outer end plate member, the planar outer end plate member being spaced a second distance away from the vehicle, the second distance being greater than the adjacent first distance of the upper and lower range portions; an upper plate member extending in a vehicle length direction substantially transverse with respect to the mounting plate member; a lower plate member extending in the vehicle length direction substantially transverse with respect to the mounting plate member; an upward sloping plate extending between the upper range portion of the impact surface and the upper plate member, the upward sloping plate making a first obtuse angle relative to the upper range portion of the impact surface to define a first ridge, the upward sloping plate making a second obtuse angle relative to the upper plate member to define a second ridge, a thickness of the upward sloping plate being greater than a thickness of the upper range portion of the impact surface; a downward sloping plate extending between the lower range portion of the impact surface and the lower plate member, the downward sloping plate making a third obtuse angle relative to the lower range portion of the impact surface to define a third ridge, the downward sloping plate making a fourth obtuse angle relative to the lower plate member to define a fourth ridge, a thickness of the downward sloping plate being greater than a thickness of the lower range portion of the impact surface; and a reinforcing plate member extending between the central portion of the impact surface and the mounting plate member.