| 摘要 |
PURPOSE:To reduce magnetic flux leaking to the outside remarkably by adjoining an N pole and an S pole to the surface section of a permanent magnet material consisting of ferrite, plastics or the like and magnetizing the N pole and the S pole. CONSTITUTION:The figure represents a constitutional diagram in which an N pole and an S pole are adjoined to the surface section of a ferrite magnet composed of barium, strontium or the like magnetized or a permanent magnet 5 consisting of plastics, in which the inside of the resin of polyamide or the like is filled with the ferrite magnet, and magnetized. According to the constitution, leakage flux 6 generated from the N pole is absorbed to the adjacent S pole, and magnetix flux leaking to sections except a section in the vicinity of a magnetizing surface section is reduced remarkably. When another magnetically soft material as a material to be attracted is attracted and a closed magnetic circuit is formed, attracting force is not minimized even in the case of this constitution, and there is no trouble when the constitution is used as an attracting tool.
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