发明名称 |
FLUID BEARING DEVICE, METHOD OF MANUFACTURING THE SAME, AND DISK DRIVE DEVICE |
摘要 |
Provided is a fluid bearing device with a hub part having high molding precision and dimensional stability and capable of being produced at low cost. An annular gate (14) is formed at a portion of a cavity (15) corresponding to an outer peripheral edge portion of a lower end surface (10c1) of a flange part (10c), and a molten resin (P) is filled into the cavity (15) through the annular gate (14) to form a hub part (10) made of resin. The hub part (10) molded by the injection molding exhibits a radial resin orientation through an entire periphery thereof. Further, an annular gate trace (16) is formed at the outer peripheral edge portion of the lower end surface (10c1) of the flange part (10c) of the hub part (10).
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申请公布号 |
US2009284866(A1) |
申请公布日期 |
2009.11.19 |
申请号 |
US20060066597 |
申请日期 |
2006.09.11 |
申请人 |
NTN CORPORATION |
发明人 |
ITO KENJI;ITO FUYUKI |
分类号 |
G11B17/02;B29C45/14;B32B37/12;F16C32/06 |
主分类号 |
G11B17/02 |
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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