| 摘要 |
PROBLEM TO BE SOLVED: To provide a linear motor wherein effective stroke length can be taken long, deterioration of thrust force in stroke end is eliminated, a coil is not damaged, and a member is not dispersed. SOLUTION: The linear motor comprises back yokes 1 which face each other; magnets 2 stuck with inner surfaces of the back yokes 1; multiple phase coils 4 which face the magnets 2, and are wound in a flat shape and arranged and held in side-by-side in a moving direction; and side yokes 6 which magnetically couple both end portions of the back yokes 1. The magnets 2 are arranged alternately in such a manner that facing surfaces become different polarities of a single pole and adjacent magnets become different polarities. Air gap portions 7 for preventing magnetic leakage are arranged between the side yokes 6 and the magnets 2 at both ends. COPYRIGHT: (C)2004,JPO&NCIPI
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