公开(公告)号：US09709092B2

公开(公告)日：2017-07-18

申请号：US15123524

申请日：2015-05-11

Applicant: NIDEC COPAL ELECTRONICS CORPORATION

Inventor： Takahiro Kikuchi ,  Takeshi Hijiya ,  Toshiya Uchida

IPC: F16C17/02 ,  F16C32/06 ,  F16C35/02 ,  G02B26/12 ,  H02K5/16 ,  H02K7/08

CPC classification number: F16C32/0685 ,  F16C17/02 ,  F16C17/026 ,  F16C32/0417 ,  F16C32/0603 ,  F16C32/0614 ,  F16C35/02 ,  F16C2370/20 ,  F16C2380/26 ,  G02B26/12 ,  G02B26/121 ,  H02K5/16 ,  H02K5/165 ,  H02K7/08 ,  H02K7/086

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.