US 11,955,854 B2
Armature and manufacturing method of armature
Kiyotaka Koga, Nishio (JP); Takahiro Kobuchi, Kariya (JP); and Takashi Kato, Anjo (JP)
Assigned to AISIN CORPORATION, Kariya (JP)
Appl. No. 17/273,107
Filed by AISIN CORPORATION, Kariya (JP)
PCT Filed Nov. 6, 2019, PCT No. PCT/JP2019/043383
§ 371(c)(1), (2) Date Mar. 3, 2021,
PCT Pub. No. WO2020/095920, PCT Pub. Date May 14, 2020.
Claims priority of application No. 2018-211083 (JP), filed on Nov. 9, 2018.
Prior Publication US 2021/0344243 A1, Nov. 4, 2021
Int. Cl. H02K 3/12 (2006.01); H02K 3/48 (2006.01); H02K 15/00 (2006.01)
CPC H02K 3/12 (2013.01) [H02K 3/48 (2013.01); H02K 15/0068 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An armature comprising:
an armature core provided with a plurality of slots extending in an axial direction;
a plurality of first segment conductors disposed on one side of the armature core in the axial direction and including a first leg portion that extends to the other side of the armature core in the axial direction;
a plurality of second segment conductors disposed on the other side of the armature core in the axial direction and including a second leg portion that extends to the one side of the armature core in the axial direction; and
a coil portion including a joint portion in which at least a part of a first surface that is provided on a tip end portion side of each first leg portion of the plurality of first segment conductors and that is provided so as to extend along the axial direction, and at least a part of a second surface that is provided on a tip end portion side of each second leg portion of the plurality of second segment conductors and that is provided so as to extend along the axial direction are joined in one of the slots or on an outer side of one of the slots in the axial direction, wherein
the first leg portion has a first leg portion body portion and a first surface side part that is provided with the first surface and that has a thickness in a radial direction smaller than a thickness of the first leg portion body portion in the radial direction,
the second leg portion has a second leg portion body portion and a second surface side part that is provided with the second surface and that has a thickness in the radial direction smaller than a thickness of the second leg portion body portion in the radial direction,
in the radial direction, a thickness of the joint portion is equal to or more than a thickness of a part other than the joint portion,
in the plurality of first segment conductors and the plurality of second segment conductors disposed side by side in one of the slots in the radial direction, a minimum value of a dimensional variation range of a total thickness of the joint portion in the radial direction is equal to or more than a maximum value of a dimensional variation range of a total thickness in the radial direction of a part in which the first surface and the second surface are not provided,
a minimum value of a dimensional variation range of a thickness of the first surface side part in the radial direction among the plurality of first segment conductors disposed in one of the slots is equal to or more than half of a maximum value of a dimensional variation range of a thickness of the first leg portion body portion among the plurality of first segment conductors disposed in one of the slots, and
a minimum value of a dimensional variation range of a thickness of the second surface side part in the radial direction among the plurality of second segment conductors disposed in one of the slots is equal to or more than half of a maximum value of a dimensional variation range of a thickness of the second leg portion body portion among the plurality of second segment conductors disposed in one of the slots.