| 摘要 |
An improved electrical rotary machine which includes a stator having either one of a permanent magnet or pole teeth, a rotor having the other of the permanent magnet or pole teeth, a ring coil wound around a coil bobbin, a yoke which forms a magnetic circuit surrounding the ring coil together with the pole teeth, a bearing for supporting a rotor shaft of the rotor, a reduction mechanism further including gears engaging a gear secured to the rotor shaft, and a case for the reduction mechanism. The yoke is formed as one unit with the case for integral construction of the coil bobbin, bearing and case.
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