Patent ID: 6412182
Filing Date: 2002-07-02
Classification: G01D

Abstract:
A measuring device for contactless detection of an angle of rotation a between a stator (16, 17) and a rotor (14), wherein a permanent magnet (13) is disposed on the rotor (14), wherein there is an air gap between the stator (16, 17) and rotor (14) and the stator is comprised of at least two segments (16, 17), which are separated by at least one magnetically non-conductive gap (21, 22), wherein at least one magnetic field-sensitive element (25) is disposed in at least one gap (21), wherein at least one part (17) of the stator has no magnetically conductive connection to the rotor (14), characterized in that the axle (11) of the rotor (14) has at least one region made of magnetically conductive material which extends at least from the rotor (14) to the part (16) of the stator and has a magnetically conductive connection to the rotor (14), and in that there is at least one first gap (22) between the two parts (16, 17) of the stator, which hinders the magnetic flux of the permanent magnet (15) and controls it so that it travels via at least one of the other gaps (21).