OIL DYNAMIC-PRESSURE BEARING, MOTOR, AND DISK UNIT

摘要

PROBLEM TO BE SOLVED: To provide an oil dynamic-pressure bearing, a motor, and a disc device, capable of achieving compactness or thinness.

SOLUTION: This oil dynamic-pressure bearing B is composed of at least two bearings B1 and B2. Each of the bearings B1 and B2 has a bearing inner end on the closer side to a bearing rotation axis or a bearing center and a bearing outer end on the farther side from the bearing rotation axis or the bearing center part. The bearing inner end and the bearing outer end are respectively connected to a taper seal part. The taper seal part is communicated with outside air. The bearings B1 and B2 are different from each other in the direction from the bearing inner end to the bearing outer end. The taper seal part connected to the bearing inner end of one bearing B21 and the taper seal part connected to the bearing inner end of the other bearing B2 is a common single taper seal part.

COPYRIGHT: (C)2006,JPO&NCIPI