Stator, motor and stator manufacturing method

Abstract

A stator comprising a stator core and a coil, the stator core having an annular core back centered on an axis, and a plurality of teeth protruding axially from one side of the core back and arranged circumferentially, and a plurality of slots arranged circumferentially between adjacent teeth in the plurality of teeth, the coil being located in the plurality of slots, and the stator core having a steel plate laminated radially, the core back having a plurality of grooves recessed axially and extending radially outward from the radially inner side of the core back, and when the stator core is viewed axially, the center line of the grooves is parallel to the center line of the grooves.

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