Stator core, stator, rotating electric machine, electric power steering device, stator manufacturing method, rotating electric machine manufacturing method, electric power steering device manufacturing method

摘要

Teeth group that fits inside the annular yoke portion (11b) and the inner side of the annular yoke portion (11b), and that is joined together by the thin-walled connecting portion (11a1) at both ends on the inner circumferential side of the adjacent teeth (11a2). (11a) and a stator core (11) constituting a stator (10) of a rotating electric machine having a slot for accommodating a stator winding (12), and the annular yoke portion (11b) has an inner circumference The surface is provided with V-shaped groove portions (11b1) extending in the axial direction of the stator (10) and having a cross section perpendicular to the axial direction opening on the inner side of the stator core (11) at equal intervals. 11a) is a fitting portion (11a3) having a wedge-shaped cross section perpendicular to the axial direction in which each tooth (11a2) is fitted along the groove. ) Provided with a stator core (11) That.