Rotor for micro-servomotor, and micro-servomotor equipped with said rotor
AssigneeKabushiki Kaisha Yaskawa Denki
InventorsShinichiro Mukai, Shojiro Mori, Mamoru Era
Life of this patent
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Abstract
A rotor for a micro-servomotor is reduced in weight and imbalance. The rotor R is provided with a molded resin member 3 having an inclined surface 3a, the resin member 3 being formed by filling an epoxy resin material between the axial end faces of permanent magnets 2 and the external peripheral surface of a shaft 1 made of magnetic material, and also provided with a groove 1b at a part of the external peripheral surface of the shaft 1 opposed to the molded member 3.
Claims19
A rotor for a micro-servomotor a stator provided with a stator coil for forming rotating magnetic field and a rotor comprising a plurality of circular arc shaped permanent magnets attached to an external peripheral surface of a shaft so as to be opposed to the stator via a magnetic gap,
- wherein the rotor further comprises molded resin members formed at both sides of the permanent magnets, each of the molded resin members having an inclined surface formed by filling resin material between an axial end face of the permanent magnets and the external peripheral surface of the shaft.
Dependencies are inferred from the claim text.