Nidec Corporation

Junichi Uno

Takeshi Honda

Yasuaki Nakahara

Takayuki Migita

Keisuke Saito

Hisashi Fujihara

Hiroshi Kitagaki

Tsuyoshi Nakamura

Takashi Shiraishi

A method of manufacturing a rotor core, the method including laminating first laminated steel plates in an axial direction. The first laminated steel plates each include a plurality of flake portions arranged in a circumferential direction with gaps between each other and a plurality of protrusions protruding radially outward from an outer side surface of a base portion and each having at least a portion located in the gap between the flake portions. The method further includes fixing the base portions to each other and fixing the flake portions to each other. The method further includes removing the protrusions of the laminated steel plates radially outward.

Rotor core with concave portions between flake portions and base portions with dimensions

A rotor includes a rotor core including laminated thin plate cores. A single thin plate core includes an inner plate portion defining a portion of an inner core portion and outer plate portions defining a portion of an outer core portion. At least some of the laminated thin plate cores include a connecting portion. A number of connecting portion is one or a plurality, and, when the number of connecting portions is a plurality, the connecting portions at positions other than both left and right sides of each other in a circumferential direction, and, in plan view, the thin plate core includes the connecting portion at a position different from that of a connecting portion in another thin plate core adjacent in an axial direction.

Rotor, motor, and rotor manufacturing method

Growing community of inventors

Kyoto, Japan

Junichi Uno