发明名称 |
Spindle motor and hard disk drive including the same |
摘要 |
There are provided a spindle motor and a hard disk drive including the same. The spindle motor includes: a sleeve installed on a base member and having a circulation hole; a shaft inserted into the sleeve; a rotor hub installed on an upper end portion of the shaft; and a thrust member installed in an installation groove formed in an upper portion of the sleeve and forming a connection part, the connection part allowing the circulation hole to be in communication with a sealing part formed by the sleeve and the rotor hub and having a liquid-vapor interface disposed therein, wherein the connection part is formed between the sleeve and the thrust member in a circumferential direction, and at least any one part of the connection part has a radial gap wider than that of another part thereof in the circumferential direction. |
申请公布号 |
US8896962(B2) |
申请公布日期 |
2014.11.25 |
申请号 |
US201313945566 |
申请日期 |
2013.07.18 |
申请人 |
Samsung Electro-Mechanics Co., Ltd. |
发明人 |
Kim Duck Young |
分类号 |
G11B19/20 |
主分类号 |
G11B19/20 |
代理机构 |
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代理人 |
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主权项 |
1. A spindle motor comprising:
a sleeve fixedly installed on a base member and having a circulation hole formed in an axial direction; a shaft rotatably inserted into the sleeve; a rotor hub fixedly installed on an upper end portion of the shaft in the axial direction; and a thrust member installed in an installation groove formed in an upper portion of the sleeve in the axial direction and forming a connection part at the time of being installed in the installation groove, the connection part allowing the circulation hole to be in communication with a sealing part formed by the sleeve and the rotor hub and having a liquid-vapor interface disposed therein, wherein the connection part is formed between the sleeve and the thrust member in a circumferential direction, and at least any one part of the connection part has a radial gap wider than that of another part thereof in the circumferential direction. |
地址 |
Suwon KR |