Patent ID: 8099746

Claim:
A motor comprising: a stationary unit; a bearing mechanism; a rotary unit supported by the bearing mechanism at the upper side of the stationary unit for rotation about a center axis with respect to the stationary unit; and a chucking device provided above the rotary unit for engagement with a central hole of a storage disk, wherein the rotary unit includes a substantially cylindrical closed-top rotor yoke provided with a cover portion extending around the chucking device and designed to allow the storage disk to be directly or indirectly mounted thereto and a removal-preventing member fixed to the cover portion to prevent removal of the rotary unit from the stationary unit, the removal-preventing member made of metal, the cover portion including an upper surface, a lower surface and a plurality of through-holes formed therethrough, the removal-preventing member including a removal-preventing portion positioned below and near a portion of the stationary unit or the bearing mechanism, an upper fixing portion having a plurality of upper protrusions inserted into the through-holes of the cover portion and bent toward the upper surface of the cover portion and a lower fixing portion making direct or indirect contact with the lower surface of the cover portion and cooperating with the upper fixing portion to fix the position of the removal-preventing portion in a direction parallel or substantially parallel to the center axis.