Patent ID: 11923726
Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A stator core-for a rotating electric machine of an axial gap type, the stator core comprising:
a body portion formed by a compaction-molded body of soft magnetic powder whose surfaces are coated with insulating films, wherein
the body portion is provided with one or a plurality of through holes,
the body portion includes
a plate-shaped yoke having one surface and a back surface crossing an axial direction of the rotating electric machine, and
a plurality of tooth portions protruding along the axial direction from the one surface,

the one or plurality of through holes penetrate along the axial direction from the one surface to the back surface, and
in a cross-section of the yoke along one plane or each of a plurality of planes including an axis of the rotating electric machine and a center line of the one or plurality of through holes, a proportion of a sectional area based on a contour of the one or plurality of through holes in a sectional area based on an outer contour of the yoke is 50 percent or less.