Patent ID: 9103330
Filing Date: 2015-08-11
Classification: F04B,F04D,G11B

Abstract:
1. A motor comprising: a rotating portion; and a stationary portion arranged to support the rotating portion such that the rotating portion is rotatable about a central axis; wherein the rotating portion includes a shaft and a rotor magnet; the stationary portion includes: the stator includes a stator core and coils; the substantially cylindrical bushing includes: the mounting plate includes: an axial lower end of the fixing cylindrical portion of the mounting plate is arranged at an axial level lower than that of an axial lower end of a bushing press-fit area an inner circumferential surface of the fixing cylindrical portion and an outer circumferential surface of the bushing cylindrical portion are in contact with each other; and at least one of an axial lower end of a sleeve fixing area and an axial lower end of a radial gap is arranged at an axial level higher than that of an axial upper end of the bushing press-fit area, wherein the sleeve fixing area is an area where an outer circumferential surface of the sleeve and an inner circumferential surface of the bushing cylindrical portion are in contact with each other, and wherein the radial gap is defined between an inner circumferential surface of the sleeve and an outer circumferential surface of the shaft such that the sleeve supports the shaft.