| 摘要 |
PURPOSE: A mover is provided to be capable of reducing a cost and a size and of establishing a cost and a size freely. CONSTITUTION: An inner core is inserted in an outer core. A mover(K') is inserted between the outer core and the inner core so as to be moved. A magnet holder(50) is configured to have a cup shape of a constant outer diameter. A plurality of first permanent magnets(60) are installed so as to be spaced apart one another in a circumference direction of the magnet holder. A plurality of second permanent magnets(70) are formed with a different material from the first permanent magnets and are installed between the first permanent magnets, respectively.
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