REDUCTION GEARBOX FOR A PLAY-FREE JOINT, ESPECIALLY FOR ADJUSTING VARIOUS PARTS OF A MOTOR VEHICLE SEAT

摘要

Speed-reducing mechanism characterised in that each planet gear (15) has on its central axis a cylindrical bearing surface (16) (internal or external) designed to centre itself on and react with a complementary cylindrical bearing surface (21) (external or internal, respectively) provided on a star-shaped planet-gear support (20) which, owing to the material from which it is made and its design, has sufficient elasticity in order constantly to press the teeth of the planet gears into the teeth of their respective disc, thus making it possible to take up the play inherent in the manufacture of this type of mechanism and also making it possible to absorb, without degradation, such excess loads as may arise, for example in the course of the use of the speed-reducing mechanism as an articulation for a vehicle seat. …IMAGE…