Crossmember for a vehicle dashboard provided with a reinforcing back brace made of a fibrous composite

摘要

The invention relates to a vehicle dashboard crossmember (2) including a crossbar which extends lengthwise along a generatrix line (G) that is directed substantially along the width of the vehicle body and transversely relative to the direction of travel of said vehicle, as well as at least one connection flange (3, 4) designed to enable said crossbar (2) to be attached to said body, said crossbar (2) consisting, over at least a portion of the length thereof, of a load-bearing web (10) that has a side wall (11) rounded about said generatrix line (G) so as to have, in a cross-section perpendicular to the generatrix line, a first arm (12) and a second arm (13) that are connected to one another via a common connection portion (14) and which thus define a cavity (15), and of a reinforcing brace (20) made of a fibrous composite material.

主权项

1. A dashboard crossmember for a vehicle, said crossmember comprising:
a crossbar which extends lengthwise according to a generating line (G), intended to be oriented according to the width of the vehicle body, transverse to the driving direction of said vehicle, at least one mounting flange designed for mounting said crossbar to the body of said vehicle, wherein said crossbar is formed, at least over a portion of its length, by a first part forming a carrier core and by a second part different from the first part and which forms a rigid reinforcing brace; said carrier core comprising a side wall bulging around said generating line (G) so as to present, in a section perpendicular to the generating line, a first branch and a second branch which are connected to each other by a common connecting part and which border a cavity; said reinforcing brace connecting the first branch of said carrier core with the second branch of said carrier core, said reinforcing brace being made from fibrous composite material containing fibers arranged in a matrix, and wherein the rigid reinforcing brace covers at approximately 25% to 50% of a length (L2) of the crossbar.