| 摘要 |
PURPOSE:To provide the magnet device, having a resin magnet formed by filling the mixture of magnet powder and resin into a continuous yoke disusing a sintered magnet method, in which the attraction force per unit weight can be improved. CONSTITUTION:An attachment 1 is formed by an endlessly-shaped yoke 2 and a resin magnet part 4. The traverse cross section of the yoke 2 is formed in U-shape, and it is composed of mutually opposing wall parts 21 and 22 and an interconnected wall part 25. A mixed material, consisting of rare-earth magnet powder and resin, is put in between the opposing wall parts 21 and 22 of the yoke 2, and a resin magnet part 4 is formed. A magnetic path P1, which passes the opposing wall part 22 on the outer circumferential side of the attachment 1, and the magnetic path P2, which passes the opposing wall part 21 on the inner circumferential side of the attachment 1, are endlessly formed corresponding to the endlessly shaped yoke 2 when viewed in horizontal state of the attachment 1. |
