Invention Grant
US08670209B2 Spindle motor including a fluid dynamic bearing and disk drive apparatus with same
有权
主轴电动机包括流体动力轴承和具有该动力轴承的盘驱动装置
- Patent Title: Spindle motor including a fluid dynamic bearing and disk drive apparatus with same
- Patent Title (中): 主轴电动机包括流体动力轴承和具有该动力轴承的盘驱动装置
-
Application No.: US13767205Application Date: 2013-02-14
-
Publication No.: US08670209B2Publication Date: 2014-03-11
- Inventor: Yoichi Sekii , Shuji Iwasaki
- Applicant: Nidec Corporation
- Applicant Address: JP Kyoto
- Assignee: Nidec Corporation
- Current Assignee: Nidec Corporation
- Current Assignee Address: JP Kyoto
- Agency: Keating & Bennett, LLP
- Priority: JP2012-157474 20120713
- Main IPC: G11B17/02
- IPC: G11B17/02 ; H02K7/08
Abstract:
A stationary portion of a motor includes a shaft component, an upper plate portion, and a lower plate portion. A rotating portion includes a sleeve portion which is disposed between the upper plate portion and the lower plate portion. The shaft component includes an inner shaft upper portion, an inner shaft lower portion which is located in a lower side of the inner shaft upper portion, and an outer shaft portion. The outer shaft portion is located on an outer circumferential surface of the inner shaft upper portion and an outer circumferential surface of the inner shaft lower portion. The inner shaft upper portion and the upper plate portion are preferably defined by a single monolithic member, and the inner shaft lower portion and the lower plate portion are preferably defined by a single monolithic member.
Public/Granted literature
- US20140016229A1 SPINDLE MOTOR INCLUDING A FLUID DYNAMIC BEARING AND DISK DRIVE APPARATUS WITH SAME Public/Granted day:2014-01-16
Information query
IPC分类:
