| 摘要 |
PURPOSE:To facilitate timing adjustment and improve detection accuracy by providing a detection timing adjusting member of a rotary magnetic field on each magnetic pole sensor. CONSTITUTION:An adjusting member 3 (31-33) of rotary magnetic field detection timing provided on the front face of each magnetic pole sensor 2 (21-23) is provided so as to take the magnetic flux of a magnet ring 1 into each magnetic pole sensing part, fitted to a fitting plate 5 so that the rear end of the member 3 on the sensor 2 side is set as a supporting point and the other end is swung around it right and left to be shifted, and the member 3 can be positioned on the optimum position by thread fastening or adhesion. A yoke member 4 (41-43) provided on the back of each sensor 2 can increase the number of magnetic fluxes passing each sensor 2 by providing it, and hence the rotary magnetic field can be detected stably and surely. |
