Energy absorbing device for bumper assembly

摘要

An energy absorbing device for a bumper assembly of a vehicle includes a plunger. A deformable wall extends along an axis and defines a cavity for receiving the plunger during relative movement between the plunger and the deformable wall resulting from impact between the bumper assembly and another object. A ledge is fixed to the deformable wall and extends between the cavity and the plunger for collapsing the deformable wall into the cavity. The deformable wall collapses inwardly to eliminate material stack up to accommodate packaging restraints in the design of the bumper assembly.

主权项

1. An energy absorbing device for a bumper assembly of a vehicle, the energy absorbing device comprising:
a plunger; a deformable wall extending along an axis and defining a cavity for receiving the plunger and configured to plastically deform during relative movement between the plunger and the deformable wall; a ledge fixed to the deformable wall and extending between the cavity and the plunger for collapsing the deformable wall into the cavity; and an outer case receiving the deformable wall for coupling the deformable wall to the vehicle, the outer case being cylindrical and extending entirely around a perimeter of the deformable wall.