Spindle motor, and disk drive apparatus including the spindle motor

Patent metadata

Field	Value
Publication number	US-9047925-B2
Application number	US-201313947139-A
Country	US
Kind code	B2
Filing date	Jul 22, 2013
Priority date	Dec 27, 2010
Publication date	Jun 2, 2015
Grant date	Jun 2, 2015

Abstract

A spindle motor includes a shaft arranged to extend in an axial direction, and a base portion arranged to define a portion of a housing, and including a through hole in which the shaft is inserted. A fixing region is defined between an inner circumferential portion of the base portion and a lower portion of the shaft. The fixing region includes a press-fitting region and an adhesion region defined on a lower side of the press-fitting region and in which a seal gap is defined between the inner circumferential portion of the base portion and the lower portion of the shaft. The seal gap is arranged to gradually decrease in radial width with increasing height. The seal gap is arranged to include an adhesive arranged therein over an entire circumference thereof.

First claim

What is claimed is:

1. A spindle motor for use in a disk drive apparatus to drive a disk, the disk drive apparatus including a housing defining an interior space, the spindle motor comprising:
a stationary portion including a shaft arranged to extend in an axial direction;
a base portion arranged to define a portion of the housing, and including a through hole in which the shaft is inserted; and
a rotating portion arranged to rotate about a central axis with respect to the sta…

Assignees

• Nidec Corp

Inventors

• Sugi Takatoki
• Yoneda Tomohiro
• Kobayashi Hiroshi

Classifications

• F16C2226/12

  Mechanical Engineering · mapped topic

• F16C17/105

  Mechanical Engineering · mapped topic

• G11B33/08 Primary

  Physics · mapped topic

• F16C33/743

  Mechanical Engineering · mapped topic

• F16C2226/40

  Mechanical Engineering · mapped topic