| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic gear device capable of increasing a reduction ratio without increasing a size of the device in a direction parallel with a rotational shaft.SOLUTION: A first inner gear 5 of a magnetic gear device 1 comprises a first inside cylinder 31 coaxially coupled with a first rotational shaft 3 and a plurality of first magnet pieces 32 attached to an outer peripheral part of the first inside cylinder 31. A second inner gear 6 comprises a second inside cylinder 41 having a cylinder hole in which the first inner gear 5 is arranged, a plurality of second magnet pieces 42 attached to an inner peripheral part of the second inside cylinder 41 and a plurality of third magnet pieces 43 attached to an outer peripheral part of the second inside cylinder 41. An outer gear 7 comprises an outside cylinder 51 having a cylinder hole in which the second inner gear 6 is arranged and a plurality of fourth magnet pieces 52 attached to an inner peripheral part of the outside cylinder 51. A plurality of first magnetic teeth parts 8 are arranged between the plurality of first magnet pieces 32 and the plurality of second magnet pieces 42. A plurality of second magnetic teeth parts 9 are fixed on the second rotational shaft 4 and arranged between the plurality of third magnet pieces 43 and the plurality of fourth magnet pieces 52. |
