| 摘要 |
<p>A spindle motor according to an embodiment of the present invention includes: a shaft which is a driving axle of the center of a motor; a sleeve receiving and supporting the shaft to be able to rotate as fluid; a base with a core mounted thereon, which is formed on the lower part of the shaft and protrudes to the upper part of the shaft while supporting the shaft; and a hub coupled to the shaft, wherein a curved part of which an external end is bent toward the lower side of the shaft is formed and a magnet is formed inside the curved part to face the core. One or more circulation units are formed to allow fluids to communicate with the upper and lower surfaces of the sleeve, and a foreign material storage unit is formed in a middle part of the circulation unit.</p> |
