| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To increase an output efficiently by effectively using permanent magnets and magnetic materials constituting a rotor. <P>SOLUTION: The rotor 11 is formed of a plurality of magnet electrodes 31 and a rotor frame 33 formed of a non-magnetic material that accommodates these magnet electrodes 31. The plurality of magnet electrodes 31 accommodated in the rotor frame 33 is arranged so as to be adjacent with each other in the circumferential direction via radial-direction ribs 34. Each magnet electrode 31 is provided with a permanent magnet piece 41 of a roughly fan-shaped plate shape magnetized in the thickness direction (direction parallel to that of axis of rotation O) and a pair of magnetic material members 42, 42 of roughly fan-shaped plate shapes which sandwich the permanent magnet piece 41 from both sides of the thickness direction. A plurality of through-holes 42a which pass through the magnetic material members in the direction parallel to that of the axis of rotation O are provided in the vicinity of both ends of the circumferential direction of the magnetic material members 42. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
