发明名称 |
Hydrodynamic bearing and apparatus for driving polygonal mirror using the same |
摘要 |
A hydrodynamic bearing having an improved air discharging path for discharging air from the bearing when a shaft is inserted into the bearing, and an apparatus for driving a polygonal mirror using the hydrodynamic bearing. The hydrodynamic bearing includes: a bearing housing having a hollow portion filled with oil, and first and second stepped mounting recesses formed at one end of the hollow portion; a thrust plate installed in the first mounting recess so that one surface of the thrust plate is in contact with one end of the shaft, for supporting the shaft in a thrust direction, a diameter of the thrust plate being smaller than that of the first mounting recess: a first air discharging path formed at the thrust plate and/or the first mounting recess, for discharging air out of an inside of the bearing housing; a cap installed in the second mounting recess, for supporting a lower portion of the thrust plate; and a second air discharging path formed at the cap for communicating with the first air discharging path through a space between the thrust plate and the first mounting recess to discharge outwardly the air transferred from the first air discharging path. |
申请公布号 |
US2005213858(A1) |
申请公布日期 |
2005.09.29 |
申请号 |
US20050081078 |
申请日期 |
2005.03.16 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
YOU JE-HWAN;KIM HYUN-SURK |
分类号 |
F16C32/06;F16C17/10;F16C33/10;G02B26/12;H02K5/16;H02K7/08;(IPC1-7):F16C32/06 |
主分类号 |
F16C32/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|