Patent ID: 8118351

Claim:
A motor vehicle front-end panel assembly of a type fixed to side struts and cradle extensions of a motor vehicle chassis, said assembly comprising: a plastic material structural frame comprising at least a lower cross member and vertical struts, each of said struts forming, over at least a portion of its height, a deformable energy absorption component, the assembly further comprising a plastic material bumper formed so as to match a shape of a bumper skin and arranged against the structural frame, said bumper comprising an upper cross member and a lower cross member interconnected via vertical connecting beams, the upper and lower cross members each having a central portion and two lateral portions arranged on either side of the central portion, said cross members comprising a plurality of ribs, wherein a concentration of ribs in at least one of the central portion of the upper cross member and of the lower cross member is greater than a concentration of ribs of each lateral portion of at least one of the upper cross member and of the lower cross member, wherein the vertical connecting beams have a cellular structure comprising of cells extending longitudinally through the beams and opening onto at least one of a rear face and a front face of the bumper, and each connecting beam comprises first blind cells, closed on the rear face side and open on the front face side, and second blind cells open on the rear face side and closed on the front face side.