Patent ID: 7053518

Claim:
A rotor for a dynamo-electric machine comprising a rotating shaft, a field winding, and first and second rotor cores, wherein each of the first and second rotor core includes a cylindrical portion, a disk portion and a plurality of magnetic poles, the cylindrical portion of each of the first and second rotor cores is fixed to the rotating shaft and the field winding is disposed on the cylindrical portions of the first and second rotor cores, the disk portion of each of the first and second rotor cores is provided so as to extend from the cylindrical portion in a radial direction, the plurality of magnetic poles of each of the first and second rotor cores extend from the disk portion in an axial direction so as to form spaces between each of adjacent magnetic poles, each of the plurality of magnetic poles of the first rotor core extends to a corresponding one of the spaces between adjacent magnetic poles of the second rotor core, and each of the plurality of magnetic poles of the second rotor core extends to a corresponding one of the spaces between adjacent magnetic poles of the first rotor core, wherein the rotor further comprises a plurality of first deformation preventing members of non-magnetic material, each of the first deformation preventing members is attached to a corresponding one of magnetic poles of the first rotor core, each of the first deformation preventing members includes a pair of elongated portions, each of the elongated portions is pressed against a side wall of a corresponding one of the magnetic poles of the second rotor core at a predetermined pressing force.