公开(公告)号：US20240282516A1

公开(公告)日：2024-08-22

申请号：US18441263

申请日：2024-02-14

Applicant: TDK CORPORATION

Inventor： Hirofumi SASAKI ,  Keigo HIGASHIDA ,  Fuyuki MIURA ,  Ryosuke IINUMA

IPC: H01F41/082 ,  H01F5/02 ,  H01F27/28 ,  H01F41/076

CPC classification number: H01F41/082 ,  H01F5/02 ,  H01F27/2828 ,  H01F41/076

Abstract: A coil device includes a winding portion having a wire spirally wound. The winding portion has at least one boundary region. The at least one boundary region divides the winding portion into divided sections along a winding axis of the winding portion.

公开(公告)号：US20240282507A1

公开(公告)日：2024-08-22

申请号：US18441214

申请日：2024-02-14

Applicant: TDK CORPORATION

Inventor： Hirofumi SASAKI ,  Fuyuki MIURA ,  Ryosuke IINUMA

IPC: H01F27/28 ,  H01F27/02 ,  H01F27/255

CPC classification number: H01F27/28 ,  H01F27/255 ,  H01F27/02

Abstract: A coil device includes: a conductor including a winding portion and a leadout portion led out from the winding portion; a first core including a center core portion disposed inside the winding portion in a radial direction and a side wall portion surrounding the winding portion; and a plate-shaped second core attached to one end of the side wall portion in an axial direction. The side wall portion has a cutout portion formed at the one end of the side wall portion in the axial direction to pass the leadout portion. The cutout portion is cut toward another end of the side wall portion in the axial direction. At least a part of the leadout portion is exposed to an outside through the cutout portion.