気体動圧軸受、モータ、ファンモータおよび直列式ファンモータ

Japanese Patent JP7400249

B2

To provide a structure for supporting a gas dynamic pressure bearing even if applied with a force in an axial direction.SOLUTION: A gas dynamic pressure bearing has a shaft 31 having a shaft dynamic pressure part 315, and a sleeve 25 having a sleeve dynamic pressure part 255 opposing the shaft dynamic pressure part via a clearance in a radial direction. A thrust bearing 5 which can be positioned in an axial direction by a rotation-side magnet 311 supported to the shaft, and a first fixed-side magnet 251 and a second fixed-side magnet 261 which are supported to the sleeve is arranged at one side in an axial direction. The rotation-side magnet is formed into a cylindrical shape extending in the axial direction, and has a different magnetic pole in the axial direction. The first fixed-side magnet is formed into a cylindrical shape extending in the axial direction, opposes the fixed-side magnet via a clearance in the radial direction, and has a magnetic pole different from the magnetic pole of the rotation-side magnet in the radial direction. The second fixed-side magnet is located at one side in the axial direction rather than the rotation-side magnet, and opposes the rotation-side magnet with a clearance in the axial direction.SELECTED DRAWING: Figure 3

WO/2001/077401	COATING INSTALLATION
JP2002173838	SPINDLE DEVICE IN COVERING MACHINE

Kento Tamaoka
Kazuhiko Fukushima
Shun Hirano

JP2019141537A

December 19, 2023

July 31, 2019

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Nidek Co., Ltd.

F16C32/04; F16C17/08; F16C17/10; H02K7/08; H02K7/09; H02K7/14

JP2018189105A
JP57097918A
JP63190928A
JP5083455U
JP2005532516A
JP2016157103A
JP2003166534A
JP11325074A
JP6010623U
JP2008106938A
JP2008106705A
JP3092597U

US20030141773

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