| 摘要 |
PROBLEM TO BE SOLVED: To fully intercept leakage of magnetic forces from permanent magnets to the outside of various kinds of equipment having the permanent magnet. SOLUTION: In a yoke structure for equipment, incorporating the permanent magnets and having platy yokes which are arranged to surround the magnet with their surfaces being directed toward the magnets, the plate-like yokes are constituted of inner yokes which are positioned to surround the magnets with their surfaces, directed directly toward the magnets and one or a plurality of platy yokes which are superimposed upon the outer surfaces of the inner yokes and surround the magnets via the inner yokes.
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