Patent ID: 8952586
Filing Date: 2015-02-10
Classification: H02K,Y10T

Abstract:
1. A structure comprising: a base having a shaft tube, wherein the shaft tube has an inner diameter, an opening end and a closed end opposite to the opening end, with the inner diameter defined by an inner circumferential wall of the shaft tube, with a deformable portion extending axially from an inner annular shoulder portion to the opening end, with the inner annular shoulder portion extending radially outward of the inner circumferential wall and having an inner periphery and an outer periphery opposite to the inner periphery, with a thickness of the shaft tube defined between the inner circumferential wall and an outer circumferential wall opposite to the inner circumferential wall, with a radial thickness of the deformable portion being smaller than the thickness of the shaft tube, with the deformable portion deformable from a receiving position to a deformed position, and with the deformable portion in the receiving position having a size equal to or larger than the inner diameter, with the deformable portion in the deformed position having a reduced size less than the inner diameter; and a stator unit fitted to the outer circumferential wall of the shaft tube and having an insulation sleeve and a pressing portion, with an end of the pressing portion having an annular corner radially arranged between the inner periphery and the outer periphery of the inner annular shoulder portion, and with the annular corner of the pressing portion abutting against the deformable portion and deforming the deformable portion from the receiving position to the deformed position.