Patent ID: 9118234
Filing Date: 2015-08-25
Classification: H02K

Abstract:
1. A stator comprising: a core having a plurality of annularly arranged tooth portions; and an insulator disposed on an end portion of the core, the insulator having an annular wall portion extending in a direction departing from the core, with a protrusion protruding radially outward across an entire circumference of the wall portion, and the protrusion being provided on an outer circumferential surface of the wall portion, the core having recesses formed along an axial direction thereof at respective portions of an outer circumferential surface of the core which correspond to the plurality of tooth portions, and the protrusion being arranged so that gaps are created at respective positions corresponding to portions between the tooth portions, each of the gaps is situated between a part of the protrusion and the end portion of the core, and the gaps are formed to extend around at least a majority of a circumference of the core.