Protection device for pedestrians in event of front collision with automobile comprises arm extending bonnet rear, which rotates on vehicle structure, connected by electrically controlled fixings

摘要

The automobile bonnet (1) is extended in its rear part by a carrying arm (2) which rotates on the vehicle structure (3) about a principal axis (23) perpendicular to the vehicle longitudinal direction. Connections (4,5) fixing the bonnet on front part of the arm can be controlled electrically so as to selectively be presented in a passive protection state (Ep) in which the degrees of freedom between the bonnet and the arm are zero, or in an active protection state (Ea) in which the connections cause a rotation of the bonnet relative to the arm about a secondary axis (24) located towards the vehicle front.