| 摘要 |
There is provided a linear motor in which the number of armature windings can be reduced, and an armature iron core can be readily fixed to a member for supporting the armature iron core. Each of three inductors 1 A to 1 C is so arranged that a tooth row 7 therein is located on each side thereof in a width direction thereof orthogonal to a moving direction of an armature 3 . The three inductors are arranged spaced apart from each other by a predetermined spacing in the width direction. An armature iron core 9 of the armature 3 includes four magnetic pole portions 15 A to 15 D and three yoke portions 17 A to 17 , and is constituted by a plurality of electromagnetic steel plates laminated in the moving direction of the armature 3 . The four magnetic pole portions 15 A to 15 D are arranged in parallel and spaced apart from each other by a predetermined spacing so that each of the three inductors 1 A to 1 C is positioned within the spacing. Each of permanent magnet rows 11 A to 11 F is arranged on an opposed surface 21 of each magnetic pole portion. The three yoke portions 17 A to 17 C extend in the moving direction of the armature 3 and magnetically couples the adjacent two magnetic pole portions 15 A and 15 B, 15 B and 15 C, and 15 C and 15 D, respectively. Three armature windings 13 A to 13 C are wound around the yoke portions 17 A to 17 C, respectively.
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