| 摘要 |
PURPOSE:To eliminate powder dusts in a sensor container by providing a partition wall between the container of the sensor for mechanically detecting the rotary position of a rotor, and a magnetic circuit section in the rotor and stator. CONSTITUTION:Axial ends are supported by bearing blocks Ba, Bb, and a rotor R disposed with stators Sa, Sb at the periphery is formed of a shaft 2 and a magnet secured to the shaft 2. A bearing base 8 in the block Ba has a recess 12 at the opposite side surface to the rotor R side, and a rotary position detecting sensor or the rotor R is disposed in the recess. This sensor mechanically detects, and has a rotor C mounted at the end of the shaft 2 of the rotor R, and a pair of brushes 13, 14 respectively contacted with segments 19, 20 aligned in a pair of axial directions formed on the outer periphery of the rotor C. |
