Patent ID: 6879150

Claim:
A magnetic position sensor comprising: a first member and a second member forming an air gap therebetween, the first and second members being fixed together, at least one of the first member and the second member comprising first and second stators having different sizes and different shapes and concentrically arranged around a same center; a permanent magnet arranged in the air gap so as to relatively rotate with respect to the first member and the second member, and opposing to each of the first member and the second member; a magnetic flux detecting element arranged in at least one of the first member and the second member, which detects a change of magnetic flux and outputs a magnetic flux signal based on the detected change of magnetic flux; and a rotor to which the permanent magnet is mounted, and capable of rotating around a predetermined axis, wherein widths of the first member and the second member in a thrust direction of the rotor have at least a length equal to or more than a sum of a width of the permanent magnet in the thrust direction of the rotor and a displacement amount in the thrust direction of the rotor.