The rotor structure

PROBLEM TO BE SOLVED: To reduce centrifugal force applied during rotation of a rotor by providing a pole core having claw poles projecting to mesh each other, and a reinforcing body included such that the outer circumferential surface of a magnet for reducing flux leakage from the side face of adjacent claw pole enlarges mutually. SOLUTION: A magnet 30 is provided on side faces 23c, 24c of a claw pole 23, 24, while inclining in a direction of enlarging from the center line thereof passing through the center of rotation 7p of a rotor 7 toward the outer circumferential surface 23b, 24b side and thereby no holding part is required. It is cantilevered by a reinforcing body 40 using adhesives. A centrifugal force 30E, being applied to the center of gravity 30j of the magnet 30 during rotation of the rotor 7, is absorbed by the reinforcing body 40 in the form of a moment for turning the magnet 30 and a part of the reinforcing body 40 for holding the magnet 30. Since a side face magnet body 50 turns such that the outside diameter side thereof approaches the side 23c, 24c of the claw pole, the stress becomes less than an allowable range.