| 摘要 |
A non-contact driving motor capable of keeping its non-contact state irrespective of its start-up or stoppage condition, thereby obtaining a semi-permanent durability. The motor including a housing, a sleeve extending upwardly from the housing, a stator assembly fitted around the sleeve, a vertical shaft rotatably inserted in the sleeve, a rotor assembly including a rotor case coupled to an upper end of the shaft, and an annular driving magnet attached to an outer peripheral end of the rotor case in such a fashion that it faces the stator assembly, an annular first magnet attached to an inner peripheral surface of the sleeve at an upper end of the sleeve, an annular second magnet attached to an outer peripheral surface of the shaft in such a fashion that it faces the first magnet in a horizontal direction, a disc-shaped third magnet fitted around a lower end of the shaft, a disc-shaped fourth magnet attached to the inner peripheral surface of the sleeve above the third magnet in such a fashion that it faces the third magnet in a vertical direction, and a disc-shaped fifth magnet attached to a cap covering the lower end of the sleeve beneath the third magnet in such a fashion that it faces the third magnet in a vertical direction.
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