| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotor structure of a permanent magnet rotating electric machine which is improved in resistance properties for high-speed rotation, enhanced in the transmission of rotation torque, and high in productivity. SOLUTION: A rotating shaft 1 has a plurality of recessed grooves 1a extendedly formed along the axial direction on its surface, and a permanent magnet is extended in the axial direction, and formed into a shape of an arc which has the same width in the radial direction along the external peripheral surface of the rotating shaft 1. The permanent magnet includes a plurality of first magnet pieces 2 arranged between the adjacent recessed grooves 1a on the surface of the rotating shaft 1, and a plurality of second magnet pieces 3 which are extended in the axial direction, of which the external peripheral surfaces located outside the radial direction are formed into shapes of arcs having the same outside diameters as those of the first magnet pieces 2, and the radial widths are formed thick in thickness compared with those of the first magnet pieces 2, and which are arranged between the adjacent first magnet pieces 2 so as to be inserted into the recessed grooves 1a at their portions located at an axial core side. COPYRIGHT: (C)2009,JPO&INPIT |
