| 摘要 |
PURPOSE:To improve the completeness of provision of anisotropy in axial and diametrical directions and the reliability of the junction section by injection molding a resin magnet molding material into a cavity in the magnetic field in the diametrical direction of a ring, and integrating it with an object provided with an axial magnetic anisotropy. CONSTITUTION:A ring object 8 provided with axial magnetic anisotropy is placed in the bottom of a ring-shaped cavity 9 of a metal mold. And in the magnetic field where a magnetic path in the diametrical direction of the ring is formed in combination of a magnetic material 12 and a non-magnetic material 10, a resin magnet molding material is injection molded into the cavity 9 and integrated with the object 8 provided with axial magnetic anisotropy. With this, the provision of anisotropy becomes complete both in the axial and diametrical directions, so the magnetic flux density obtained by magnetization reaches the maximum possessed by the material, and there is no peeling occurred during the use in the part provided with axial anisotropy and in the part provided with diametrical anisotropy.
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