Patent ID: 8552605

Claim:
A dynamo-electric machine comprising: a casing that includes: a first housing portion that includes an engaging part; and a second housing portion that includes an engaging part, wherein the engaging part of the second housing portion is axially snap-fitted to the engaging part of the first housing portion to couple the second housing portion to one end part of the first housing portion; a plurality of permanent magnets that are fixed to an inner peripheral surface of the first housing portion and are spaced from one after another in a circumferential direction; an armature that is rotatably placed radially inward of the plurality of permanent magnets; and a plurality of spacers, each of which is circumferentially placed between and is press-fitted between corresponding adjacent two of the plurality of permanent magnets, wherein each of the plurality of spacers axially contacts a corresponding contact part of the second housing portion to limit axial movement of the corresponding contact part of the second housing portion toward the spacer; each of the plurality of spacers includes a limiting portion, which is engaged to the inner peripheral surface of the first housing portion to limit the axial movement of the corresponding contact part of the second housing portion toward the spacer; and the limiting portion of each of the plurality of spacers extends axially from and is tilted radially outwardly from an axial end part of the spacer, which is axially opposite from the second housing portion.