Patent ID: 8582233
Filing Date: 2013-11-12
Classification: G11B,H02K

Abstract:
1. A spindle motor which is for use in a disk drive apparatus which includes a housing including a base member and a cover member, the spindle motor comprising: a stationary portion; and a rotating portion which is rotatably supported with respect to the stationary portion; wherein the stationary portion includes: the rotating portion includes a sleeve portion including an inner circumferential surface which defines a bearing hole penetrating in an axial direction; the stationary shaft is disposed in the bearing hole; a gap is defined between an outer circumferential surface of the stationary shaft and an inner circumferential surface of the sleeve portion; the gap is filled with lubricating oil; a dynamic pressure generating groove array is provided in at least one of the outer circumferential surface of the stationary shaft and the inner circumferential surface of the sleeve portion to define the gap; the stationary shaft includes: the base member includes a fixing portion arranged to directly or indirectly fix the cover member.