| abstract |
(57) [Abstract] [Purpose] To facilitate the handling such as assembling and replacement of the permanent magnet for leakage magnetic flux reduction sandwiched between the Lundell-type claw-shaped magnetic poles that form a multi-pole magnetic field. [Structure] Side surfaces 3a facing each other in the circumferential direction of adjacent claw-shaped magnetic poles 3 The permanent magnet 7 was mounted in the gap between the members so that it could be inserted and removed from the axial side. As a result, the permanent magnet 7 is mounted between the claw-shaped magnets after the insertion of the permanent magnet 7 into the rotating shaft of the rotor and after the work of cutting the outer diameter of the claw-shaped magnetic pole 3 so as not to contact the stator. As a result, there is no room for the impact due to the rotary shaft insertion work to be applied to the permanent magnet, and the cleaning of the cutting waste becomes easy. Also, replacement of the permanent magnet becomes easy. |