| 摘要 |
PROBLEM TO BE SOLVED: To provide an efficient induction generator which is suitable for, for example, a generator motor for an automobile, by optimizing the arrangement of a coil and a magnet and by minimizing an energy loss caused by the friction at rotation of a rotor. SOLUTION: There are provided a cylindrical housing comprising a coil inside, and a rotor which comprises a permanent magnet and rotates in the housing. The rotor is provided with a disc-like base extending in the radial direction of the housing and an extension part extending vertically from the base. The extension part is composed of a plurality of annular parts spaced from each other in the radial direction of the housing. The inner peripheral surface and/or outer peripheral surface of each annular part is attached with the permanent magnet. The coil is disposed in the gap between the extension parts of the housing. At the position opposed to the magnet at the innermost peripheral surface and the outermost peripheral surface of the extension part, the permanent magnet having the polarity opposite to that magnet is disposed. COPYRIGHT: (C)2004,JPO
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