| 摘要 |
PURPOSE: A spindle motor is provided to form a curved unit on a cover, thereby preventing oil from being exposed to the outside when external force or shock is existed. CONSTITUTION: A cover(190) seals injected oil and covers a lower part of a sleeve(150). The cover is fixed to inner periphery of the lower part of the sleeve. A curved unit is protruded to the lower part of the sleeve for a shaft direction of a rotation shaft in a center unit of the cover. When the rotation shaft is upwardly and downwardly moved by external force, the oil is received to an oil receiving groove(151) of the sleeve. The oil receiving groove provides damping effect for movement of the oil.
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