Patent ID: 9071107
Filing Date: 2015-06-30
Classification: H02K,Y10T

Abstract:
1. A rotor unit for a rotating electrical machine comprising: an annular rotor core including laminated steel sheets that are laminated in a vertical direction; a plurality of magnets arranged in a circumferential direction around the rotor core; and a holder made of resin that is arranged to hold the plurality of magnets; wherein the holder includes a plurality of partitioning portions that extends in the vertical direction along an outer peripheral surface of the rotor core, and a coupling portion that connects the plurality of partitioning portions; the rotor core and the holder are made of insert molded material so as to be fixed together; a portion of resin that defines the holder is present between the plurality of steel sheets that defines the rotor core in the outer peripheral surface of the rotor core; one of the plurality of magnets is press-fitted into a pair of the plurality of partitioning portions that are mutually adjacent; each of the plurality of partitioning portions includes: an inner peripheral surface of the wall portion includes an inclined surface that gradually approaches the outer peripheral surface of the rotor core as the inclined surface extends downward in the vertical direction from an upper end of the rotor core in the vertical direction.