公开(公告)号：US20240321499A1

公开(公告)日：2024-09-26

申请号：US18588237

申请日：2024-02-27

Applicant: TDK CORPORATION

Inventor： Toshiyuki HORIKAWA ,  Shinichiro KOKUBO ,  Ryoji ONO

IPC: H01F27/08 ,  H01F27/26 ,  H01F27/28 ,  H01F27/32

CPC classification number: H01F27/08 ,  H01F27/263 ,  H01F27/2823 ,  H01F27/323

Abstract: A coil device including a first winding unit around which a first wire is wound, a second winding unit around which a second wire is wound, a middle leg core disposed radially inside the first winding portion and the second winding portion, an outer leg core disposed radially outside the first winding unit and the second winding unit, and a first combining core coupling the middle leg core with the outer leg core. At least one of an inner circumferential surface of the first winding portion and an inner circumferential surface of the second winding portion is in contact with an outer circumferential surface of the middle leg core.