| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic type gear device that can be assembled into a device of a tight-sealed structure and perform an efficient high rate rotational speed conversion.SOLUTION: A magnetic type gear device comprises: a first member 6 having nsets of first magnet sets 12 composed of two permanent magnet pieces of their magnetization directions opposite to each other equally spaced apart in a circumferential direction and fixed at a first cylindrical yoke 11 made of magnetic material; a second member 7 having nsets of second magnet sets 14 composed of two permanent magnet pieces of their magnetization directions opposite to each other equally spaced apart in a circumferential direction and fixed at a second cylindrical yoke 15 made of magnetic material; and a third member 8 having the number of nof tooth profile members 13 made of magnetic material equally spaced apart in a circumferential direction at a cylindrical holder made of non-magnetic material. The magnetic type gear device also comprises a second transmission 2 at an inside region of an inner circumferential surface of the second yoke 15 of the second member 7 so as to convert a rotational speed of the second member 7.SELECTED DRAWING: Figure 1 |
