MOTOR VEHICLE VALANCE PANEL STRUCTURE

The invention relates to a valance panel structure (1) including a first (10) and second shell (20) extending in a longitudinal direction and assembled such as to form a hollow body and including an inner reinforcement (30) inside said hollow body. The inner reinforcement (30) includes three planar walls (32, 34, 36) arranged two-by-two at right angles or substantially at right angles such as to form an approximately Z-shaped cross-section, a longitudinal free edge (33) of a first planar wall (32) being inserted between two assembled securing rims (16a, 22a) of the first and second shells, at least on one portion of the length of said securing rims, a third planar wall (36) which is parallel or substantially parallel to the first wall (32) being applied against the bottom wall (12) of the first shell and attached to same.