To provide a structure capable of preventing plurality of core pieces from scattering in a radially outward direction while suppressing magnetic resistance of each core piece at a motor rotating unit having a plurality of core pieces.
A rotating unit 3A of a motor includes a shaft 31A, a circular plate 52A, a rotor core constituted by a plurality of core pieces 53A, and a plurality of magnets 54A arranged in a circumferential direction. The plurality of core pieces 53A and a plurality of magnets 54A are arranged alternately in the circumferential direction. The core pieces 53A and the circular plate 52A are fixed by fitting between a recessed portion provided on one of them and a protruded portion provided on the other, or fitting between a first through hole provided on the circular plate and a protruded portion provided on the core piece. Since a plurality of core pieces are fixed on the circular plate without forming a through hole in each core piece, rise in magnetic resistance at each core piece can be avoided.
SHINOHARA TOSHINOBU
YOKOKAWA CHIKA
UCHITANI YOSHIHIRO
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