Patent ID: 9350209
Filing Date: 2016-05-24
CPC Classification: H02K,Y10T

Claim Text:
1. A stator of an electric motor which is provided with a tooth, a unit coil which is attached to said tooth so as to surround an outer circumferential surface of said tooth, and a coil fastening part which is arranged in a gap between an end face at the outer circumferential surface of said tooth and an inner circumferential surface of said unit coil, wherein said coil fastening part can be turned inside said gap about its axis of rotation and has a noncircular shape cross-section which is vertical to said axis of rotation, said coil fastening part has a cross-section with a first dimension which is represented by a first line segment which intersects said axis of rotation and a second dimension which is represented by a second line segment which intersects said axis of rotation and is different from said first line segment and which is larger than said first dimension, said coil fastening part can be turned about said axis of rotation so as to move between a first position at which said first line segment is aligned with a height direction of said gap vertical to said end face of said tooth and a second position at which said second line segment is aligned with a height direction of said gap, and said coil fastening part pushes against said end face of said tooth and said inner circumferential surface of said unit coil at said second position whereby said unit coil is fastened to said tooth.