US 12,294,256 B2
Stator and method of manufacturing stator
Keita Miyashita, Tokyo (JP); Hideki Shigematsu, Tokyo (JP); Yasuyuki Kimura, Tokyo (JP); and Yuichi Hosoda, Tokyo (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Feb. 21, 2022, as Appl. No. 17/676,251.
Claims priority of application No. 2021-054847 (JP), filed on Mar. 29, 2021.
Prior Publication US 2022/0311318 A1, Sep. 29, 2022
Int. Cl. H02K 15/085 (2006.01); H02K 1/16 (2006.01); H02K 3/12 (2006.01); H02K 3/32 (2006.01)
CPC H02K 15/085 (2013.01) [H02K 1/16 (2013.01); H02K 3/12 (2013.01); H02K 3/32 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A stator comprising: a stator core having a plurality of slots; and a plurality of segment coils, each of which is to be inserted into the slots and has an insulating film,
the plurality of segment coils each including an inclined portion that protrudes from the slot to an outside in an axial direction of the stator core and is bent obliquely in a circumferential direction of the stator core, and a rising portion formed by bending a tip end side of the inclined portion to rise in the axial direction of the stator core, the rising portions that are adjacent to each other in a radial direction of the stator core being joined to each other,
wherein each of the plurality of segment coils includes:
first peeled portions each in which the insulating film facing the circumferential direction of the stator core is peeled in a lengthwise direction from a tip end of the rising portion toward the inclined portion; and
second peeled portions each in which the insulating film facing the radial direction of the stator core is peeled in the lengthwise direction from the tip end of the rising portion toward the inclined portion,
the first peeled portions are on edgewise surfaces having a first line width, and the second peeled portions are on flatwise surfaces having a second line width that is greater than the first line width,
the first peeled portions and the second peeled portions are arranged in different planes, the first peeled portions are each a surface facing the circumferential direction of the stator core, and the second peeled portions are each a surface facing the radial direction of the stator core, and
a peeling length of the first peeled portion is longer than a peeling length of the second peeled portion.