| 摘要 |
PROBLEM TO BE SOLVED: To provide an outer rotor type motor which secures specified thrust force without using a thrust magnet and also is inexpensive and is stable in property since it suppresses the temperature rise within a rotor frame. SOLUTION: The roof of a rotor frame 2 includes a through hole 12, and the vicinity of the through hole 12 includes a vane 3 for exhaust or air intake, and also the periphery of the rotor frame 2 is extended in the radial direction of the motor, at a specified air-gap 4 from a board 1 thereby generating thrust force. COPYRIGHT: (C)2008,JPO&INPIT
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