| 摘要 |
PURPOSE:To obtain high thrust with small current, by enabling movable steel pieces divided into two to slide against a stationary section consisting of a magnet and a coil, and by including a gap between the movable steel pieces, in a closed magnetic circuit against the magnetic flux of the coil. CONSTITUTION:Coils 14, 15 wound up on bobbins 12, 13 with a permanent magnet 11 put between them and magnetized in the thickness direction are arranged, and are surrounded by stator yokes 16, 17, to organize a stationary section 10. A movable section 20 is organized with two movable steel pieces 21, 22 and a movable base 23. A gap G is set between the movable steel pieces 21, 22. By the permanent magnet 11, constant magnetic flux BM1, BM2 are always generated and the respective coils 14, 15 are surrounded. When direct current is applied to terminals 18, 19, then magnetic flux BC is generated, and the direction depends on current. The magnetic flux BM1, BM2, and BC is added or deducted, and the movable section 20 is propelled in the directions X, Y. The movable range is set by the width W of the permanent magnet 11. By this method, near the gap G, the energy of the coils 14, 15 is almost concentrated, and the movable section is strongly propelled. |
