Hinge mechanism for a vehicle seat, and a seat fitted with such a mechanism

摘要

A hinge mechanism comprises a moving cheek-plate having a circular set of teeth and a stationary cheek-plate carrying first and second toothed slugs that slide radially in order to engage the set of teeth. The first slug normally slides without circumferential clearance over the stationary cheek-plate while the second slug slides with clearance between two guides that diverge towards the set of teeth so as to co-operate with them to form two wedge-shaped spaces that receive two wedges projecting from either side of the second slug.