Patent ID: 6933649

Claim:
A motor having a rotation axis comprising: a stator core stack formed by laminating a plurality of straight core and curling the straight core circularly, having a core back outer peripheral surface of the core back constituting a circular outer peripheral surface of the stator core stack, laminated teeth protruding radially inwardly from the core back, and a pare of end surfaces situated at both end of the stator core stack and adjoining and opposing each other; the straight core comprising a plurality of core pieces linked with adjoining the core pieces at linking portions forming a row of the core pieces, the linking portions being deformable so as to aligned the core pieces disposed circularly, and end edges formed at both end of the row, which constitute the end surfaces when the straight core form the stator core stack; a windings wound on said laminated teeth of the stator core stack; a cylindrical housing having a section of an approximately circular inner peripheral surface, a diameter of the circular inner peripheral surface of the section being slightly smaller than the diameter of the outer peripheral surface of the stator core stack; and wherein: the stator core stack is disposed in the section of the cylindrical housing, and a bar-like member is press-fitted between the end surfaces and expands the diameter of the stator core stack slightly, so as to contact the outer peripheral surface of the stator core stack on the inner peripheral surface of the section of the cylindrical housing.