ISOTROPIC BOND MAGNET, ELECTRIC MOTOR ELEMENT, ELECTRIC MOTOR AND DEVICE

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PROBLEM TO BE SOLVED : To provide a bond magnet having a high magnetic characteristic and an electric motor element having the same. SOLUTION : An electric motor element 14 has a substantially cylindrical stator 1 and a rotor 2 which is rotatably held inside the stator 1. A shaft hole 3 is provided at the center of the rotor 2, and the rotor 2 and a shaft (not shown) are fixed to each other while the shaft is inserted in the shaft hole 3. The stator 1 includes a stator core 7 having a substantially cylindrical yoke portion 4 and teeth portions 5 extending to the inside of the yoke portion 4, and a wound body 6 obtained by winding an insulated wire around each teeth portion 5. The rotor 2 has a cylindrical rotor core 9 and bond magnet portions 10 in plural holes 11 formed in the circumferential direction of the rotor 2. The bond magnet portion includes at least isotropic rare earth magnet powder, anisotropic Sm-Fe-N-based magnet powder and binder resin. SELECTED DRAWING : Figure 1 COPYRIGHT : (C)2017, JPO&INPIT