| 主权项 |
1. A motor comprising:
a stationary portion including a base portion, a bearing cup portion, a shaft, and a stator; and a rotating portion including a sleeve portion, a rotor hub extending radially outward from the sleeve portion, and a rotor magnet fixed to the rotor hub; wherein the shaft includes a shaft portion and a flange portion extending radially outward from an outer circumferential surface of the shaft portion; the sleeve portion includes a bearing hole configured to accommodate at least a portion of the shaft; the bearing cup portion includes a cylindrical wall surrounding an outer circumference of the sleeve portion, and a plate portion in a shape of a circular or annular plate and extending radially inward from an inner circumferential surface of the cylindrical wall; the flange portion includes a first flange surface which is a cylindrical surface extending in an axial direction and facing radially outward, and a second flange surface which is a circular or annular surface extending radially from the first flange surface; the plate portion includes a first plate surface which is a cylindrical surface extending in the axial direction and facing radially inward, and a second plate surface which is a circular or annular surface extending radially from the first plate surface; the first flange surface and the first plate surface are positioned opposite to each other to define a first adhesive portion, the first adhesive portion including an adhesive therein; the second flange surface and the second plate surface are positioned opposite to each other to define a second adhesive portion, the second adhesive portion including an adhesive therein; the adhesive in the first adhesive portion is continuous with the adhesive in the second adhesive portion; and the first plate surface extends axially upward higher than the second plate surface and towards an axial middle portion of the shaft. |
