| 摘要 |
PURPOSE:To reduce the number of parts and to decrease the number of assembling by projecting a bearing retaining and sensor bearer at a rotor side, and mounting a sensor at the end of the rotor side. CONSTITUTION:A bracket 7 axially opposed to the lower portion 5a of a winding 5 is projected to the rotor side from the bottom 7a at a bearing retaining and sensor bearer 7b for receiving a bearing 11. A sensor 8 is mounted at the end of a rotor side of the bearer 7b. It is held that the bearing 11 is disposed nearer to the rotor from the bottom 7a of the brakcet axially opposed to the lower portion 5a of the winding 5, and the leakage magnetic flux from a magnet 3 is flowed by the bearer 7b of the bracket 7 having a magnetic permeability higher than the air to the end 7c nearest to the rotor. |
