Magnet rotor

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PROBLEM TO BE SOLVED : To provide a magnet rotor which has versatility and improved characteristics and can maintain high quality, by inserting magnets having lengths which are shorter than the lengths of the margins of housing holes, having margins formed in chorded states with respect to the circular arc which forms the outside diameter of an iron core into the housing holes. SOLUTION : A rotor is constituted, by inserting plate-shape magnets 3a into housing holes 2a, formed through the iron core 1a of the rotor, in the axial direction in parallel with an axial hole 9 by clearance fitting, press-fitting, etc., and covering both ends of the core 1a in the axial direction, by fixing end plates to both ends with a plurality of caulking pins, passed through the core 1a in the axial direction. Although the magnets 3a are rare-earth-type magnets which are magnetically oriented in parallel with the direction of the poles and so magnetized that the adjacent magnets mutually have differing polarities, the magnets 3a can be magnetized sufficiently at both end sections in the oriented direction, when the magnets 3a are magnetized by making a magnetizing current flow, because the magnets 3a are buried near the outer periphery of the core 1a. Therefore, a rotor which has versatility and improved characteristics and can maintain high quality can be obtained.