A bumper assembly includes a bumper beam and a fin supported by the bumper beam. The fin extends along an axis from a proximate end proximate to the bumper beam to a distal end distal to the bumper beam. The fin has a sinuous cross section and a thickness each normal to the axis. The thickness at the distal end is less than the thickness at the proximate end.

A lower stiffener is provided for a bumper of a vehicle. The lower stiffener is mounted on a lower portion of a bumper beam or a front end module (FEM) carrier of the vehicle. The lower stiffener includes a pair of core portions formed by extending in a width direction of the vehicle in an elongated loop shape corresponding to a shape of the bumper of the vehicle, and arranged parallel to each other at a regular interval. A pair of molding portions surrounds the core portions, respectively and a connection portion connects and integrates the pair of molding portions with each other.

A bumper assembly includes a bumper beam and a fin supported by the bumper beam. The fin extends along an axis from a proximate end proximate to the bumper beam to a distal end distal to the bumper beam. The fin has a sinuous cross section and a thickness each normal to the axis. The thickness at the distal end is less than the thickness at the proximate end.

A bumper assembly includes a bumper beam and a fin supported by the bumper beam. The fin has a proximate end proximate to the bumper beam and a distal end distal to the bumper beam and an axis extending from the proximate end to the distal end. The fin has a sinuous shape in a cross section normal to the axis.

A bumper assembly includes a bumper elongated along a first axis. The bumper assembly includes a first energy absorbing device extending from the bumper, the first energy absorbing device having a second axis perpendicular to the first axis, the first energy absorbing device being elastically deformable along the second axis. The bumper assembly includes a second energy absorbing device within the first energy absorbing device and being shorter than the first energy absorbing device.

A bumper assembly for a motor vehicle includes an energy absorber providing a variable stiffness for different displacements. The energy absorber includes a skin portion attached to a bumper beam, a rib pivotally attached to an end of the skin portion and a reinforced element attached to an end of the rib. The rib is movable from a first position that provides a first stiffness for a first displacement to a second position providing a second stiffness greater than the first stiffness over a second displacement.

A bumper assembly includes a bumper beam and a fin supported by the bumper beam. The fin has a proximate end proximate to the bumper beam and a distal end distal to the bumper beam and an axis extending from the proximate end to the distal end. The fin has a sinuous shape in a cross section normal to the axis.

A strengthening structure of a vehicle is provided that comprises a base having a first plurality of cutouts and relief members disposed across the base. Each relief member includes a cross section having a plurality of corners forming a plurality of inner and outer angles, a distal end, and an open proximal end in communication with one of the first plurality of cutouts.

An energy-absorbing assembly includes a housing and a plurality of discrete energy-absorbing elements. The housing includes a first wall and a second wall. The first wall and the second wall are spaced apart from one another to at least partially define an interior compartment. Each element of the plurality of energy-absorbing elements includes a polymer and a plurality of reinforcing fibers. The plurality of energy-absorbing elements is at least partially disposed within the interior compartment and fixed to the housing. Each energy-absorbing element of the plurality of energy-absorbing elements includes an elongated hollow structure extending between a first end and a second end. Each elongated hollow structure defines a longitudinal axis extending nonparallel to at least one of the first wall and the second wall. In various alternative aspects, each energy-absorbing element may include a transverse wall.

To improve the safety of passengers of a motor vehicle and road users in the case of a head-on collision, a deformation element is provided and includes a crossmember holder for mounting to a crossmember and a bumper plate that can be positioned next to a bumper of a motor vehicle. The deformation element is characterized in that a centrifugal force-operated release element for adjusting and locking the distance of the crossmember holder from the bumper plate is provided between the bumper plate and the crossmember holder. A first distance of the bumper plate from the crossmember holder, starting from a normal position, is greater in a first position than a distance in a second position.