MOTOR VEHICLE VENTILATION CLOSURE FLAP WITH LOW AERAULIC SIGNATURE

摘要

A shutter for a ventilation duct for a motor vehicle is disclosed. The shutter extends longitudinally along an axis of rotation, and includes an upstream part and a downstream part which are connected by a rib at which the axis of rotation is located. The upstream and downstream parts have ends situated on both sides of a plane P which passes via said axis of rotation, such as to allow one of the ends of the shutter to be overlapped by the other end of a similar shutter disposed in an adjacent manner. A longitudinal cavity extends along the axis of rotation and passes through the upstream and/or the downstream part. The upstream and/or downstream part(s) are provided with a cavity situated in the projecting front surface of the rib and of the end of the other part.