Detector of the angular position of a rotating toothed disc or ring.

摘要

1. Detector device for determining the angular position of a reference mark on a disk (1) or a ring provided with teeth (3) and fast with a rotary shaft of a machine or a motor, in particular a motor vehicle combustion engine which includes a magnetic sensor (4) disposed close to the teeth (3) and in which these teeth have a singular zone, characterized in that the singular zone comprises a machined (5') cup shape extending over a width substantially equal to that of two of the teeth and three hollows of the set of teeth and having a marked minimum (8) in the middle.