Rotor structure and rotor structure manufacturing method

Abstract

A rotor structure and a rotor structure manufacturing method capable of suppressing magnetic flux leakage and exhibiting an excellent torque-up effect are provided. A rotor structure includes: a plurality of rotor cores and; a plurality of magnets provided in the rotor cores and by being inserted into a plurality of magnet insertion holes formed so as to penetrate in the direction of an axis line; and a shaft provided integrally with the rotor cores by being inserted into center holes of the rotor cores, wherein the rotor cores include a first rotor core in which a diameter of the center hole is approximately equal to an outer diameter of the shaft and a second rotor core in which a diameter of at least a portion of the center hole is larger than the outer diameter of the shaft and which is arranged so as to be sandwiched between two first rotor cores on the same axis, and a magnet containing material is provided in a gap between an outer circumferential surface of the shaft and an inner circumferential edge of the second rotor core.