| 摘要 |
PURPOSE: A spindle motor is provided to control pollution generated by the leaked lubricant fluid by inserting the leaked lubricant fluid into the inside again with a centrifugal force. CONSTITUTION: A sleeve(120) rotatably supports a shaft(130). The sleeve is fixed at a base member(110). A rotor hub(140) is combined with the shaft. An extended wall unit(142) of the rotor hub forms an interface between the lubricant fluid and the air with an outer circumference surface of the sleeve. An outer circumference of the extended wall unit prevents the leaked lubricant fluid from scattering to the outside by using one end unit of a protrusion unit(112) in the base member.
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