公开(公告)号：US12021424B2

公开(公告)日：2024-06-25

申请号：US17607923

申请日：2020-05-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroki Sakaguchi ,  Yoshiharu Nakamura ,  Shoichi Koyama ,  Toshikiyo Kawamura ,  Kiyomi Kawamura ,  Hideyuki Taniguchi ,  Akihiko Watanabe

IPC: H02K3/18 ,  H02K1/14 ,  H02K1/24 ,  H02K3/28 ,  H02K3/52 ,  H02K15/04 ,  H02K15/095

CPC classification number: H02K3/18 ,  H02K1/146 ,  H02K1/24 ,  H02K3/28 ,  H02K3/522 ,  H02K15/045 ,  H02K15/095 ,  H02K2213/03

Abstract: A coil is configured with stacked n turns (where n is an integer of 2 or more) of spirally wound conductive wire having a rectangular cross-section. A k-th turn (where k is an integer and 1≤k≤n) of the coil has at least a straight portion and a corner portion extending from an end part of the straight portion. On an outer peripheral surface of the corner portion, there are formed at least a first bent portion bent toward an inner peripheral side and a second bent portion bent toward the outer peripheral side, and curvature C1 of the first bent portion is different from curvature C2 of second bent portion.