| 摘要 |
PROBLEM TO BE SOLVED: To provide a linear actuator capable of reducing the manufacturing cost by reducing the number of permanent magnets and also reducing the magnets in size. SOLUTION: Permanent magnets 14, 15 and 16, 17 are cut at arbitrary positions in the axial direction of an iron member of a yoke 12. The permanent magnets 14 and 15 are cut at the intermediate parts in the axial direction of the iron member of the yoke 12. The permanent magnets 14 and 15 are cut by the same amounts in the same shapes. The permanent magnets 16 and 17 are cut at the intermediate parts in the axial direction of the iron member of the yoke 12. The permanent magnets 16 and 17 are cut by the same amounts in the same shapes. The permanent magnets 14 and 15 have the same shapes and amounts. COPYRIGHT: (C)2006,JPO&NCIPI
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