Patent ID: 8213114
Filing Date: 2012-07-03
Classification: G11B,H02K

Abstract:
1. A disk drive device comprising: a base member; a hub; a bearing unit, which is arranged on the base member and which rotatably supports the hub; and a spindle drive unit, which drives the hub to rotate, wherein the spindle drive unit includes a stator core having a salient pole, a coil that is wound around the salient pole, and a magnet that is opposed to the salient pole; wherein the hub formed of magnetic material includes an exterior cylinder portion that is engaged with the inner circumference of a recording disk, and an interior cylinder portion to which the outer circumference of the magnet is fixed; and wherein the diameter of the interior cylinder portion is larger than the diameter of the exterior cylinder portion, wherein the base member includes a wire hole through which a wire for forming the coil passes, and a concavity that is formed at a bottom surface of the base member at a position that is arranged radially outside of the outer diameter of the magnet, and wherein the wire passes through the wire hole and is arranged along the bottom surface of the base member to a wiring member to which the wire is connected at the concavity at the bottom surface of the base member.