| 摘要 |
PURPOSE: A motor is provided to prevent, without increasing an area, a rotor from rising together with a disk when the disk is detached from the motor. CONSTITUTION: A motor comprises a rotating shaft(11) having a groove with a predetermined width and depth; a rotating shaft support member arranged at the lower end of a bearing housing(19) so as to support the rotating shaft; a spacer(18) arranged at the inner surface of the bearing housing in such a manner that the spacer has a predetermined height from the top of the rotating shaft support member and an inner diameter larger than the outer diameter of the rotating shaft; and a washer(20) arranged on the spacer, wherein the washer has an inner diameter smaller than the outer diameter of the rotating shaft and larger than the inner diameter of the rotating shaft.
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