| 摘要 |
PURPOSE:To fasten an MR device tightly so as to avoid the variation of a gap between an FG magnet and the MR device in a brushless motor even if the plate thickness of a stator yoke is small and, further, reduce the cost of the motor and shorten the assembly process of the motor. CONSTITUTION:An MR holder 4 which holds an MR device which generates a signal having a frequency proportional to the speed of revolution of a rotor is fastened to a stator yoke 5 with a rivet 11. Or, a part of the MR holder 4 is fastened to the stator yoke 5 by its plastic deformation. |
