Patent ID: 8179015
Filing Date: 2012-05-15
Classification: H02K

Abstract:
1. A dynamoelectric 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, said dynamoelectric machine further comprising: 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 recessed into an axially inner opening edge portion of said interfitting groove on said yoke portions; a magnet holding seat that is disposed in said trough portion by being fitted into said interfitting groove such that radial movement is restricted, and that holds said permanent magnet; and a rotation arresting portion that is disposed so as to project axially outward from a flange portion of said bobbin, wherein said rotation arresting portion is housed inside a space that is constituted by said rotation arresting portion housing recess portion and said magnet holding seat such that rotation of said bobbin around said shaft is restricted.