US 12,176,778 B2
Rotating electric machine and method of manufacturing rotating electric machine having filled gaps between electrical conductor wire wound to form armature coil
Yuki Takahashi, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on May 11, 2022, as Appl. No. 17/741,507.
Application 17/741,507 is a continuation of application No. PCT/JP2020/041958, filed on Nov. 10, 2020.
Claims priority of application No. 2019-204217 (JP), filed on Nov. 11, 2019.
Prior Publication US 2022/0271596 A1, Aug. 25, 2022
Int. Cl. H02K 3/42 (2006.01); H02K 3/52 (2006.01); H02K 15/095 (2006.01); H02K 15/10 (2006.01)
CPC H02K 3/42 (2013.01) [H02K 3/522 (2013.01); H02K 15/095 (2013.01); H02K 15/105 (2013.01); H02K 2203/12 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A rotating electric machine comprising:
an armature coil; and
an armature that includes the armature coil, wherein
the armature coil is formed by winding an electrical conductor wire,
the electrical conductor wire includes a plurality of element wires in a bundled state and an insulating coat covering the bundled element wires,
each of the element wires includes an electrical conductor through which electric current flows, and a fusing layer that covers a surface of the electrical conductor,
in the bundled state of the element wires, the fusing layers of the element wires are in contact with and fused to one another,
an adhesive strength between the fusing layers of the element wires and the insulating coat is lower than an adhesive strength between the electrical conductor and the fusing layer in each of the element wires,
between adjacent parts of the electrical conductor wire wound to form the armature coil, there are formed gaps due to differences in straightness between different parts of the electrical conductor wire, and
the gaps are filled with a filler.