ROTOR AND PERIPHERAL DRIVE FAN PROVIDED WITH THE SAME
To provide a rotor in which a permanent magnet is brought close to the outer peripheral surface of a rotor core to improve the performance as a motor and secure the strength of a magnet slot.SOLUTION: A rotor includes a rotor core 11 including an outer peripheral surface 13 centered on the axis of r...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide a rotor in which a permanent magnet is brought close to the outer peripheral surface of a rotor core to improve the performance as a motor and secure the strength of a magnet slot.SOLUTION: A rotor includes a rotor core 11 including an outer peripheral surface 13 centered on the axis of rotation, and a plurality of magnet slots 12 circumferentially arranged about the axis of rotation, and a permanent magnet 16 inserted into each of the magnet slots 12. When t is the thickness of the thinnest portion of the rotor core 11 along the radial direction from the outer peripheral surface 13 to the magnet slot 12, and L is the length of the magnet slot 12 along the circumferential direction, 2≤L/t≤10 is satisfied.SELECTED DRAWING: Figure 5
【課題】永久磁石を回転子コアの外周面に接近させてモータとしての性能を高めるとともに、磁石スロットの強度を確保することができる回転子を提供する。【解決手段】回転軸線を中心とする外周面１３と、回転軸線を中心として円周方向に配列された複数の磁石スロット１２と、を有する回転子コア１１と、各磁石スロット１２に挿入された永久磁石１６と、を備え、外周面１３から磁石スロット１２までの半径方向に沿った回転子コア１１の最も薄い部分の厚さをｔ、磁石スロット１２の円周方向に沿った長さをＬとしたとき、２≦Ｌ／ｔ≦１０とされている。【選択図】図５ |
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