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.

公开(公告)号：US20240120147A1

公开(公告)日：2024-04-11

申请号：US18480547

申请日：2023-10-04

Applicant: TDK CORPORATION

Inventor： Masaru KUMAGAI ,  Shinichiro KOKUBO ,  Ge LI

IPC: H01F27/32 ,  H01F27/28 ,  H01F27/30

CPC classification number: H01F27/325 ,  H01F27/2823 ,  H01F27/306

Abstract: A flat coil comprises a coil main portion having a flat shape; a lead portion drawn out from the coil main portion; and a heat-dissipating portion provided to the coil main portion at a location different from where the lead portion is drawn out from the coil main portion, the heat-dissipating portion meeting the coil main portion at a predetermined angle.