| 摘要 |
A stator portion of a spindle motor includes a substantially cup-shaped base member including a bottom portion expanding in a radial direction, and a wall portion extending upwards from an outer edge portion of the bottom portion. A circuit board is fixed to a lower surface of the base member in a position on the outer side in the radial direction and on the upper side than the bottom portion. Accordingly, the thickness of the spindle motor in the axial direction can be reduced. The base member has a through hole formed axially through the bottom portion. An opening edge portion of the base member is covered with the insulating layer. A conducting wire from a coil is drawn through the through hole, led out along the surface of the insulating layer, and connected to the circuit board positioned on the outer side in the radial direction than the bottom portion. Accordingly, the conducting wire can be led to the circuit board while the electric connection between the conducting wire and the opening edge portion can be prevented.
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