| 摘要 |
PURPOSE: A spindle motor is provided to improve a bond extraction power of a stator and a rotor by fixing and supporting a bond of a sleeve and a hub. CONSTITUTION: A spindle motor comprises the following steps: a sleeve (22) accommodates a shaft, and supports the shaft rotatably; the shaft is combined in a central part of a hub (12) integrally; the hub is combined in a top of an axial direction of the shaft; a protruding portion (12a) is formed in a lower part of an axial direction of the hub; a stopper (60) fixes and supports the hub in a lower part of the axial direction by being inserted into an inner side of the protruding portion; and more than at least one slot is formed to the axial direction in 'an inner side of the protruding portion combined with the stopper'.
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