Fluid dynamic bearing, motor, and optical deflector
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United States of America Patent
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Jul 18, 2017
Issued Date -
N/A
app pub date -
May 11, 2015
filing date -
May 12, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Provided are a fluid dynamic bearing, a motor, and an optical deflector, for which a fixed shaft can be attached with little axial eccentricity. The bearing (10) is equipped with a fixed shaft (11), a sleeve (20) provided so as to be capable of rotating around the fixed shaft (11), dynamic pressure generating sections (22, 23) provided in the sleeve (20), and a lower case (30) for securing the lower end (11a) of the fixed shaft (11). In addition, the bearing is equipped with a retaining case (40), which has a chuck (52) that retains the upper end (11b) of the fixed shaft (11) secured by the lower case (30), and which can be secured to the lower case (30) in a state that does not generate pressure causing the axial center of the fixed shaft (11) to move.
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