| 摘要 |
PURPOSE:To obtain a stable and high thrust, by arranging the magnetic pole surface of coils in the direction at the right angle to the moving direction of a coil frame moving in one direction, and permanent magnets via a space, confronted with each other, and by arranging yokes forming the permanent magnets and a closed magnetic circuit. CONSTITUTION:A coil frame 1 is fitted on a moving unit 14 movable in the directions of arrow heads X. The frame 1 is provided with coils 6, 7 discharging magnetic flux in the direction at the right angle to the moving direction, and magnetic flux is focused by magnetic flux focusing yokes 9, 10. Outside and inside the coil frame 1, a pair of yokes 3, 4 are arranged via a space, and on the yoke 3, at the sections confronting the coils 6, 7, permanent magnets 2a-2d having a magnetic collector yoke 13 are fitted. When current is made to flow to the coils 6, 7, then orthogonal components 5, 8 are generated, and between the components and the permanent magnets 2a-2d, an attracting force and a repulsion force according to the current directions are generated. By this method, magnetic efficiency is improved, and a stable and high thrust is generated.
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