Energy absorbing beam for bumper of motor vehicle, has semi-shells respectively comprising walls with free edges, which form regulation unit regulating displacement of fluid in compartments based on impact for absorbing maximum energy

摘要

The beam (1) has a body formed of two semi-shells (10, 20), and a closed internal space (30) containing incompressible fluid, formed by gel, provided between the shells. The shells respectively comprise vertical walls (11, 21), and compartments (31) are defined between the walls in the space. The walls respectively have free edges, which form a regulation unit regulating the displacement of the fluid in the compartments based on an impact for absorbing maximum energy.