| 摘要 |
PROBLEM TO BE SOLVED: To provide an outer rotor type motor which can generate high output by enhancing cooling effects without enlarging the whole motor. SOLUTION: The outer rotor type motor 30 is provided with a base plate 32, a rotary shaft 36 freely rotatably provided in the base plate 32 via bearings 34,37, a stator 40 arranged on the base plate 32, and a rotor yoke 38 to which a magnet 46 positioned outside the stator 40 is provided and which is connected to the rotary shaft 36. It is characterized in that one or a plurality of ventilating holes 50,52 are formed in each of the base plate 32 and the rotor yoke 38. COPYRIGHT: (C)2004,JPO
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