Patent ID: 6225727
Filing Date: 2001-05-01
Classification: H02K

Abstract:
A rotor for a dynamo-electric machine comprising:a rotor coil comprising wire wound onto a bobbin for generating magnetic flux by passing an electric current through said wire;a first pole core body disposed so as to cover said rotor coil formed with a plurality of first claw-shaped magnetic poles evenly spaced around a circumferential portion thereof being magnetized by said magnetic flux;a second pole core body disposed facing said first pole core body having second claw-shaped magnetic poles spaced so as to intermesh between said first claw-shaped magnetic poles;a first magnetic body secured to only said first pole core body of said first and second pole core bodies, the first magnetic body being magnetized in directions reducing magnetic flux leakage with said second claw-shaped magnetic poles at each side surface of said first claw-shaped magnetic poles; anda second magnetic body secured to only said second pole core body of said first and second pole core bodies, wherein the first and second magnetic bodies are separated by an air gap and the second magnetic body is magnetized in directions reducing magnetic flux leakage with said first claw-shaped magnetic poles at each side surface of said second claw-shaped magnetic poles, wherein said air gap extends substantially along the entire length of the first and second claw-shaped magnetic poles of said first and second pole core bodies.