| 摘要 |
<p>PROBLEM TO BE SOLVED: To maintain fastening strength between a bearing holder and a spacer even if an inner peripheral face of the bearing holder is deformed.SOLUTION: A bearing section 24 includes: a first bearing 241; and a second bearing 242 positioned lower than the first bearing 241. A spacer 25 is positioned between the first bearing 241 and the second bearing 242 in an axial direction. A beading holder 23 includes: a stator press-fitting region to which a stator is press-fitted; a mounting plate press-fitting region to which a mounting plate 21 is press-fitted; and a spacer press-fitting region to which the spacer 25 is press-fitted. Either of ends in the axial direction of the spacer press-fitting region is positioned between a lower end of the stator press-fitting region and an upper end of the mounting plate press-fitting region in the axial direction. In such a structure, movement in the axial direction is suppressed in the ends of the spacer between the region to which the stator of the bearing holder 23 is press-fitted and the region to which the mounting plate is press-fitted and fastening strength between the spacer 25 and the bearing holder 23 is secured.</p> |
