Patent ID: 8243384

Claim:
A motor of a disk drive apparatus comprising: a stationary portion; and a rotating portion supported to be rotatable with respect to the stationary portion; wherein the rotating portion includes: a shaft arranged to extend along a central axis extending in a vertical direction; a rotor holder including an upper cover portion arranged to spread radially away from the central axis, and a cylindrical portion arranged to extend downward from a radially outer end portion of the upper cover portion; a rotor magnet fixed to an inner circumferential surface of the cylindrical portion of the rotor holder; and a turntable arranged above the rotor holder to support a disk directly or indirectly; the stationary portion includes: a bearing portion arranged to rotatably support the shaft; and an armature arranged radially opposite the rotor magnet; the rotor holder includes a first through hole defined in a center thereof, and an inner circumferential surface defining the first through hole and arranged to be in contact with an outer circumferential surface of the shaft; the turntable includes a second through hole defined in a center thereof, and an inner circumferential surface defining the second through hole and arranged to be in contact with the outer circumferential surface of the shaft; the upper cover portion includes a plurality of fixing holes arranged to extend in the vertical direction therethrough; the turntable includes a plurality of fixing projections arranged to extend through the fixing holes beyond a lower surface of the upper cover portion to be in contact with the lower surface of the upper cover portion; and each of the fixing projections includes a base end portion arranged at a level higher than that of an upper end portion of a corresponding one of the fixing holes, and the fixing projection is arranged to be elastically deformable in a radial direction above the upper end portion of the corresponding fixing hole.