| 摘要 |
PROBLEM TO BE SOLVED: To provide a linear motor the efficiency of which is improved and the manufacture of which is made easier. SOLUTION: A linear motor is constituted of prism-like inner and outer yokes 1 and 3 which are respectively formed by laminating rectangular sheet metals 2 and 4 having high permeability upon another, coils 12 wound around the central electrodes of three magnetic poles 6, 7, and 8 so as to alternately form different magnetic poles in the laminating direction of the sheet metals 4 of the outer yokes 3, yoke blocks 10 constituted by facing the surfaces of the outer yokes 3 having the magnetic poles to the inner yokes 1 through prescribed spaces, a plate-like base which holds one set of yoke blocks 10 in a facing state, and movable sections 13 which are constituted by holding a pair of plate-like permanent magnets 14 and 15 in the spaces 9 between the inner yokes 1 and outer yokes 3 at prescribed intervals in the axial direction so that the directions of magnetization of the magnets 14 and 15 may become opposite to each other. Therefore, the efficiency of the linear motor can be improved by reducing the iron loss and, at the same time, the manufacture of the motor becomes easier and the manufacturing cost of the motor is reduced.
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