Power steering system with steering column retractable according to an improved backward stroke by means of a through inductive sensor

Abstract

A power steering system for a motor vehicle, having a steering column integrating an upper shaft and an intermediate shaft rotatably linked and movable in translation relative to one another, an upper tube and a lower tube rotatably linked and movable in translation relative to one another, the upper shaft being movable in rotation and linked in translation within the upper tube, and an assist module integrating an output shaft linked in rotation with the intermediate shaft via a torsion bar, a reducer having a worm screw driven by an assist motor and which meshes on a worm wheel linked to the output shaft; and an angle measuring device having an inductive sensor carried by an annular support having a central orifice dimensioned so as to let the upper tube pass, a lower target securely mounted around the output shaft and an upper target.