US 11,973,386 B2
Rotary electric machine and method of manufacturing rotary electric machine
Kenji Nakayama, Hitachinaka (JP); Ryoji Kobayashi, Hitachinaka (JP); and Yuichiro Baba, Hitachinaka (JP)
Assigned to Hitachi Astemo, Ltd., Hitachinaka (JP)
Appl. No. 17/056,830
Filed by HITACHI AUTOMOTIVE SYSTEMS, LTD., Hitachinaka (JP)
PCT Filed Mar. 29, 2019, PCT No. PCT/JP2019/013965
§ 371(c)(1), (2) Date Nov. 19, 2020,
PCT Pub. No. WO2019/225156, PCT Pub. Date Nov. 28, 2019.
Claims priority of application No. 2018-099159 (JP), filed on May 23, 2018.
Prior Publication US 2021/0203204 A1, Jul. 1, 2021
Int. Cl. H02K 3/34 (2006.01); H02K 3/28 (2006.01); H02K 15/10 (2006.01)
CPC H02K 3/34 (2013.01) [H02K 3/28 (2013.01); H02K 15/105 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A rotary electric machine comprising insulating paper that is arranged in an annular shape for use between segment conductors for insulation between the segment conductors at coil ends of the segment conductors that form stator windings of the rotary electric machine, a developed shape of the insulating paper being a substantially fan shape, wherein
in the insulating paper arranged in the annular shape, a circumference of an annular opening of the insulating paper on a tip side of the coil end is formed to be long, a circumference of an annular opening of the insulating paper on a stator end face side on an opposite side is formed to be short, the insulating paper is formed to be inclined from the tip side of the coil end to the stator end face side with respect to an axial direction of the stator, and the insulating paper has a notch at an end portion on the stator end face side; and
a thickness of the insulating paper on the stator end face is equal to or less than one sheet thereof.