POSITION SENSOR, DESIGNED IN PARTICULAR FOR DETECTING A STEERING COLUMN TORSION

摘要

The invention concerns a position sensor, designed in particular for detecting a steering column torsion, consisting of a first magnetic structure including a plurality of magnets and a second magnetic structure including two ferromagnetic rings ( 6, 7 ) having a plurality of teeth ( 11, 12 ) and defining an air gap wherein is placed at least a magneto-sensitive element ( 15 ), the two magnetic structures being respectively integral with two parts in relative rotation. The invention is characterised in that the two ferromagnetic rings ( 6, 7 ) are nested and have each a substantially tubular part forming axially oriented teeth ( 11, 123 ) connected by a flux-closing zone ( 13, 14 ), the detecting air gap being delimited by said flux-closing zones.