| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor structure with which the positioning of a motor bearing is made easy, and leakage of lubricating oil is prevented at low cost. SOLUTION: The motor structure 2 includes a stator 21, the bearing 22, a rotating shaft 23, magnetic fluid 24, a first magnet ring 25, and a second magnet ring 26. The stator 21 has a holding space 21a. The bearing 22 has a shaft hole 221 and is provided in the holding space 21a of the stator 21. The rotating shaft 23 is inserted into the shaft hole 221 of the bearing 22, and there exists a gap, between the inner wall 222 of the shaft hole 221 and the rotating shaft 23. The magnetic fluid 24 is filled in a gap between the bearing 22 and the rotating shaft 23. The first magnet ring 25 is provided annularly at a peripheral edge of the rotating shaft 23. The second magnet ring 26 is provided annularly, outside the first magnet ring 25 and generates a magnetic force with the first magnet ring 25. COPYRIGHT: (C)2007,JPO&INPIT
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