发明名称 |
DISK DRIVE DEVICE PROVIDED WITH LUBRICANT-FILLED FLUID DYNAMIC BEARING |
摘要 |
In a disk drive device, a hub has an outer circumferential wall portion configured to hold a recording disk. A base member has a cylindrical portion, whose central axis is the rotation axis of the hub, on a surface on the side of the hub. A fluid dynamic bearing holds a lubricant and rotatably supports the hub relative to the base member. A ring-shaped attraction plate including a magnetic material is fixed to the base member and faces a magnet in the axial direction. The outer circumferential wall portion is configured such that the outer circumferential wall portion surrounds the attraction plate and that the range of the outer circumferential wall portion in the axial direction overlaps with the range of the attraction plate in the axial direction.
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申请公布号 |
US2011181986(A1) |
申请公布日期 |
2011.07.28 |
申请号 |
US20100969194 |
申请日期 |
2010.12.15 |
申请人 |
ALPHANA TECHNOLOGY CO., LTD. |
发明人 |
KODAMA MITSUO;KUROKAWA YOSHIO |
分类号 |
G11B5/60 |
主分类号 |
G11B5/60 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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