Title:
FLUID DYNAMIC PRESSURE BEARING DEVICE, METHOD FOR MANUFACTURING MOTOR, AND FLUID DYNAMIC PRESSURE BEARING DEVICE
Document Type and Number:
Japanese Patent JP2005054818
Kind Code:
A
Abstract:
To provide a fluid dynamic pressure bearing device which can prevent the deterioration of the accuracy caused by the assembling and can cope with the reduction of the core inner diameter due to the miniaturization of a motor, a method for manufacturing the motor, and the fluid dynamic pressure bearing device.
The fluid dynamic pressure bearing device is provided with a rotating shaft 2 fixed to a yoke 5 having a permanent magnet 6, a sleeve 1, which is fitted to the rotating shaft 2 and to which a dynamic pressure generating groove is formed, and a case 12 being the case, to which the sleeve 1 is fitted, and fixed to a circuit board 8 to which a stator core 7 is mounted.
Inventors:
MASUDA HIROMASA
Application Number:
JP2003206081A
Publication Date:
March 03, 2005
Filing Date:
August 05, 2003
Export Citation:
Assignee:
CANON KK
CANON PRECISION INC
CANON PRECISION INC
International Classes:
F16C17/02; F16C43/02; H02K5/16; H02K7/08; H02K15/14; H02K29/00; (IPC1-7): F16C17/02; F16C43/02; H02K5/16; H02K7/08; H02K15/14; H02K29/00
Attorney, Agent or Firm:
Kazunobu Sera
Yoshiyuki Kawaguchi
Mayuko Wakuda
Yoshiyuki Kawaguchi
Mayuko Wakuda
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