| 摘要 |
PROBLEM TO BE SOLVED: To provide a linear motor in which the number of armature windings can be reduced, and an armature core can easily be fixed to a member for supporting the armature core. SOLUTION: Each of three inductors 1A to 1C is so arranged that a tooth row 7 therein is located on each side thereof in the width direction thereof, orthogonal to the moving direction of an armature 3. The three inductors are arranged in parallel, and 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 15A to 15D and three yoke portions 17A to 17C, and is constituted by a plurality of electromagnetic steel plates, stacked in the moving direction of the armature 3. The four magnetic pole portions 15A to 15D are arranged in parallel and spaced apart from each other by a predetermined spacing so that each of the three inductors 1A to 1C is positioned in-between the spacing. Each of permanent magnet rows 11A to 11 F is arranged on a facing surface 21 of respective magnetic pole portion. The three yoke portions 17A to 17C extend in the moving direction of the armature 3 and magnetically couples the adjacent two magnetic pole portions (15A, 15B) (15B, 15C) (15C, 15D), respectively. Three armature windings 13A to 13C are wound around the yoke portions 17A to 17C, respectively. COPYRIGHT: (C)2006,JPO&NCIPI
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