![SPINDLE MOTOR AND DISK DRIVE APPARATUS](/abs-image/US/2013/08/08/US20130201812A1/abs.jpg.150x150.jpg)
基本信息:
- 专利标题: SPINDLE MOTOR AND DISK DRIVE APPARATUS
- 专利标题(中):主轴电机和磁盘驱动器
- 申请号:US13755860 申请日:2013-01-31
- 公开(公告)号:US20130201812A1 公开(公告)日:2013-08-08
- 发明人: Shigeharu Sumi , Toshikazu Himeno , Hongbing Du , Junichi Hashimoto , Kazuya Enokizono
- 申请人: NIDEC CORPORATION
- 申请人地址: JP Kyoto
- 专利权人: NIDEC CORPORATION
- 当前专利权人: NIDEC CORPORATION
- 当前专利权人地址: JP Kyoto
- 主分类号: H02K21/24
- IPC分类号: H02K21/24 ; G11B17/028
摘要:
A spindle motor includes a flat stator, a rotor magnet arranged above the stator, and a magnetic portion made of a ferromagnetic material. The magnetic portion is positioned lower than the stator and the magnetic portion are axially overlapped with coils. A magnetic attraction force is generated between the magnetic portion and the rotor magnet. Since the magnetic portion is positioned lower than the stator, it is possible to cause magnetic fluxes to efficiently flow between the rotor magnet and the stator. Further, the stator includes a protrusion protruded radially outward beyond an outer circumferential portion of a rotor hub. Accordingly, in a plan view, the stator is positioned radially outward of the rotor hub.
摘要(中):
主轴电动机包括平面定子,设置在定子上方的转子磁体和由铁磁材料制成的磁性部分。 磁性部分定位成低于定子,并且磁性部分与线圈轴向重叠。 在磁性部分和转子磁体之间产生磁力吸引力。 由于磁性部分位于比定子低的位置,所以可以使磁通量有效地在转子磁体和定子之间流动。 此外,定子包括突出径向向外突出于转子毂的外周部分的突起。 因此,在平面图中,定子位于转子毂的径向外侧。
公开/授权文献:
- US08867166B2 Spindle motor and disk drive apparatus 公开/授权日:2014-10-21