| 摘要 |
PROBLEM TO BE SOLVED: To provide a linear motor which has a pole structure of a pole pitch of a large generating thrust and suitable for a reduction in size, low manufacturing and assembling costs of a permanent magnet and in which the change of a cogging force or the thrust can be reduced. SOLUTION: The linear motor comprises an armature 11 having an armature winding 15 wound on the teeth 13 of an armature core 12 and a plurality of poles 16 disposed at the distal end of the teeth 13, and an inductor 2 having inductor teeth (the pitch of the inductor teeth:λ) opposed to the armature 11 via a magnetic air gap (g), in such a manner that the armature 11 is used as a movable element and the inductor 2 is used as a stator. In the motor, the poles 16 are constituted of rugged-like permanent magnets 17b, 17c. The pitch of the protrusions of the permanent magnet is set equally to the inductor teeth pitchλ. As the permanent magnets 17b, 17c, one set of two permanent magnets having different magnetizing directions are combined and disposed at the distal ends of the teeth 13.
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