Patent ID: 7880360

Claim:
A stator assembly comprising: a laminated core comprising a plurality of salient poles; and an insulator attached on the laminated core from only one axial end side of the laminated core, the insulator comprising: a plate portion having an outer shape corresponding to a projected planar geometry of the laminated core; a plurality of cover walls for covering the salient poles of the laminated core, the cover walls having a height greater than a thickness of the laminated core and disposed on a side surface of the plate portion along an outer shape line of the plate portion; and at least one projection which has a height smaller than a difference between the height of the cover walls and the thickness of the laminated core, and which is disposed on the side surface of the plate portion having the cover walls and is located to make contact with a part of a surface of the one axial end side of the laminated core.