Permanent magnet motor, drive unit integrated type permanent magnet type motor and method of manufacturing the permanent magnet type motor

摘要

According to the present invention, a permanent magnet type motor integrated with a driving device capable of compatibly achieving compactness, high output, low vibration and low noise is obtained. The permanent magnet motor has a stator iron core whose teeth protrude radially inwardly from an annular core back, are arranged in the circumferential direction, armature windings mounted on the stator iron core, and stator iron cores are fitted A rotor having a rotor iron core and a permanent magnet, each of the armature windings being composed of a plurality of coils wound intensively around the teeth, 0.122 (t 2 + t 3) / r 4 (t 2 + t 3) / r 4 where t 2 is the thickness of the core back, t 3 is the thickness of the frame and r 4 is the outer radius of the frame, where the inner circumferential ends of adjacent teeth are connected by a connecting portion, 0.202 is satisfied.