摘要 |
PROBLEM TO BE SOLVED: To realize simplification of constitution, the extension of the service lifetime of a machine, and the energy saving of holding energy, by eliminating mechanical friction and a holding current required for holding electromagnetic force in an actuator. SOLUTION: The actuator has the following characteristics: permanent magnets (5), (6) are provided to the surface of tip iron core parts of stator pieces (1), (2) of a comb-like stator iron core (9); windings (10), (11) are provided to an iron core leg part between the permanent magnet of the stator piece iron core and a common iron core (3); and a permanent magnet, which has a polarity different from that of the stator side, is provided on a movable element iron core (4) via the clearance (8) to the stator, in which the permanent magnets (5) and (6) are made to have the same polarity, only at a position opposite to either of the stator permanent magnets (5), (6). COPYRIGHT: (C)2005,JPO&NCIPI
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