Patent ID: 7656069

Claim:
A dynamoelectric machine comprising: a rotor comprising: a pole core having: a boss portion; a pair of yoke portions that are disposed so as to extend radially outward from two axial end edge portions of said boss portion; and a plurality of claw-shaped magnetic pole portions that are disposed so as to extend axially alternately from each of said pair of yoke portions, and that are arranged circumferentially so as to intermesh with each other, said pole core being fixed to a shaft that is inserted through a center axial position of said boss portion; a field coil that is housed inside a space that is surrounded by said boss portion, said pair of yoke portions, and said plurality of claw-shaped magnetic pole portions; and a pair of fans that are fixed to two axial end surfaces of said pole core, said dynamoelectric machine further comprising: a permanent magnet holding portion that is disposed integrally so as to project from said yoke portion, said permanent magnet holding portion facing an inner circumferential surface near a tip end of said claw-shaped magnetic pole portion; a cylindrical magnet holding aperture that is disposed through said permanent magnet holding portion so as to have an aperture center that is oriented in an axial direction, and that has an axial opening that faces said inner circumferential surface near said tip end of said claw-shaped magnetic pole portion; a resin magnet loading portion that is formed so as to have a cylindrical body that can fit together with said magnet holding aperture, and that is disposed so as to project integrally on said fan such that a central axis of said cylindrical body is oriented in an axial direction so as to correspond to said magnet holding aperture; and a permanent magnet that is insert-molded into said magnet loading portion, wherein said fan is fixed to said pole core by fitting said magnet loading portion together with said magnet holding aperture.