| 摘要 |
PROBLEM TO BE SOLVED: To provide a permanent magnet type electromagnetic driving device which has a high thrust and improves reproduction accuracy of an outputted acceleration waveform or displacement waveform.SOLUTION: The permanent magnet type electromagnetic driving device comprises a fixed part and a movable part. The fixed part includes: a pair of permanent magnet bodies formed by aligning and fixing a plurality of block-like neodymium magnets 16a on one-side surfaces of magnetic substance plates 11, 12, and assembled in such a manner that pole faces of the neodymium magnets oppose each other; a pair of yokes 13, 14 which are provided to be interposed between both ends of the pair of magnetic substance plates; a pair of magnetic shunt plates which are mounted so as to cover all the pole faces of the plurality of aligned neodymium magnets; and a center magnetic pole body 15 formed from a magnetic substance material bridging the pair of yokes. The movable part includes a movable wire ring 42 assembled to include the center magnetic pole body and is combined with the fixed part so as to be vibrated in a reciprocative manner by interaction of a current which flows to the movable wire ring, and magnetic fluxes generated by the pair of permanent magnet bodies. |
