Patent ID: 8878525

Claim:
A position detector for detecting a position of a detecting-subject, comprising: a stationary portion; a magnetic flux generating portion provided to one of the detecting-subject and the stationary portion; a yoke provided to the other of the detecting-subject and the stationary portion, the yoke being made of magnetic material and being shaped tubular around the magnetic flux generating portion, the yoke having a magnetic flux introducing portion which is close to the magnetic flux generating portion so that magnetic flux generated by the magnetic flux generating portion flows thereinto; and a magnetism detecting portion arranged at a position relative to the magnetic flux generating portion, the magnetism detecting portion outputting a signal which corresponds to a magnetic flux density and a magnetic flux angle generated between the magnetic flux introducing portion and the magnetic flux generating portion, wherein the magnetism detecting portion has a magnetic sensing surface which senses a magnetism along a direction vertical to a direction of the magnetic flux generated by the magnetic flux generating portion.