ELECTRIC COMPRESSOR MOTOR, ELECTRIC COMPRESSOR PROVIDED WITH SAME, AND METHOD FOR MANUFACTURING ELECTRIC COMPRESSOR MOTOR

摘要

Provided is an electric compressor motor having bridge parts spanning between teeth in an inner core, in which cogging torque and torque ripples are reduced as much as possible. A stator 21 is configured from an inner core 26 in which the tips of adjacent teeth 27 are continuous and windings 23 are laid around the core, and an outer core 28 that couples with the outer side of the inner core to form a magnetic path. The inner core has bridge parts 29 spanning between the tips of adjacent teeth, and the outer peripheral shapes of the bridge parts are each configured in an arc A1. A rotor 24 is provided with gap-widening parts 24A in which a gap with the inner peripheral surface of the stator widens from the centers of magnetic poles towards the spaces between the magnetic poles.