Energy absorption device for use between transmission element and cross beam of bumper of motor vehicle to transmit thrust at time of impact, has rectilinear and longitudinal stopper formed by junction zone of free edges of monoblock piece

摘要

The device (10) has a polygonal sectioned monoblock piece (11) formed from a pressed and folded metal flank and comprising longitudinal zones (12) that are provided with transverse corrugations (12a, 12b) and are separated by plane zones (13). The plane zones comprise rectilinear and longitudinal stoppers (14), where one of the rectilinear and longitudinal stoppers is formed by a junction zone of free edges (15, 16) of the monoblock piece. The free edges are connected together by a weld bead or a welding point or an adhesive cord. Independent claims are also included for the following: (1) a bumper for a motor vehicle, comprising a cross beam (2) a method for manufacturing an energy absorption device.