| 摘要 |
PROBLEM TO BE SOLVED: To provide a moving magnet linear actuator having a light moving body and a good responsiveness, and efficiently obtaining a large thrust. SOLUTION: A plurality of magnet components are disposed on the periphery of the rod-shaped moving body, and magnetized in the direction perpendicular to the axial direction of the rod-shaped moving body. The magnet component includes: a first permanent magnet facing an air-cored coil; a second permanent magnet magnetized in the direction parallel to the first permanent magnet, and facing the air-cored coil so as to have magnetic poles opposite to the first permanent magnet; a first magnetic material having a base for assembling the first permanent magnet, and fixed to the rod-shaped moving body through a nonmagnetic material; a second magnetic material having a base for assembling the second permanent magnet, and fixed to the rod-shaped moving body through the nonmagnetic material; and an auxiliary magnet disposed so as to approach magnetic poles opposite to the magnetic poles on the base side of the first and second permanent magnets, and fixed to the rod-shaped moving body through the nonmagnetic material. COPYRIGHT: (C)2008,JPO&INPIT
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