Patent ID: 8324782
Filing Date: 2012-12-04
Classification: H02K

Abstract:
1. A rotary electric machine comprising: a rotor comprising: a stator that is disposed so as to surround an outer circumference of said rotor; and a permanent magnet that is disposed in said trough portion so as to face an inner circumferential surface near a tip end of said claw-shaped magnetic pole portions, wherein said rotary electric machine further comprises: an interfitting groove that is disposed in a bottom portion of said trough portion so as to have a groove direction that is axial and so as to extend axially outward from axially inside; a rotation arresting portion housing recess portion that is formed on an axially inner opening edge portion of said interfitting groove on said yoke portions; a magnet holding seat comprising: a rotation arresting portion that is disposed so as to project axially outward from a flange portion of said bobbin; wherein said magnet holding seat comprises a stepped portion that is formed by setting back an axially inner end surface of said interfitting portion axially outward relative to an axially inner end surface of said magnet holding portion; wherein said bobbin is mounted to said rotor such that said rotation arresting portion is housed in a space that is formed by said rotation arresting portion housing recess portion and said stepped portion so as to restrict circumferential movement; and wherein said permanent magnet is made into a quadrangular prism that has a rectangular bottom surface, and is held by said magnet holding seat by placing said bottom surface on an upper surface of said magnet holding portion, and fixing to said magnet holding seat a cover that is mounted from radially outside to restrict circumferential, axial, and radial movement.