公开(公告)号：EP4277097A1

公开(公告)日：2023-11-15

申请号：EP22849139.5

申请日：2022-06-29

Applicant: NHK Spring Co., Ltd.

Inventor： UEDA, Ryosuke ,  HIROTA, Yuji ,  OMATA, Hiromasa

IPC: H02K15/04

Abstract: The present disclosure prevents or suppresses irregularity in the tip positions of leg parts of a plurality of rectangular wire coils that are arrayed on a stator core.
This production method for a stator involves forming leg parts (42A, 42B) of rectangular wire coils (40) such that the leg part (42A) that is on one side in the circumferential direction of a stator core (14) is longer in the axial direction of the stator core (14) than the leg part (42B) that is on the other side in the circumferential direction. At each layer (46A, 46B, 46C) of every slot (16), the leg part (42B) on the one side of one rectangular wire coil is laid on the outside in the radial direction of the leg part (42B) on the other side of another rectangular wire coil. A second jig (60) is pressed against the plurality of rectangular wire coils (40) from one side in the axial direction toward the other side in the axial direction. As a result of this pressing, only the tip of the leg part (42A) on the one side of each layer (46A, 46B, 46C) is pressed against a respective step of a stepped part (52) of a first jig (50).