公开(公告)号：US20230187124A1

公开(公告)日：2023-06-15

申请号：US18077729

申请日：2022-12-08

Applicant: TDK CORPORATION

Inventor： Kiho HWANG ,  Satoshi SHINBO ,  Toshiyuki HORIKAWA

IPC: H01F27/32 ,  H01F27/24 ,  H01F38/08

CPC classification number: H01F27/325 ,  H01F27/24 ,  H01F38/08

Abstract: A coil device including a bobbin, a first wire having a first coil part wound around the bobbin, a second wire having a second coil part wound around the bobbin, and cores and installed to the bobbin. Main inner leg sections and of the cores and are arranged at the inside of the first coil part and the second coil part. First sub-inner leg sections and of the cores and are arranged at the inside of the first coil part and an outside of the second coil part. Second sub-inner leg sections and of the cores and are arranged at the inside of the second coil part and at an outside of the first coil part.

公开(公告)号：US20170352474A1

公开(公告)日：2017-12-07

申请号：US15683157

申请日：2017-08-22

Applicant: TDK Corporation

Inventor： Masaaki IWAKURA ,  Katsuhiro ISHIGAKI ,  Hiroshi MAEDA ,  Satoshi SHINBO ,  Nobuo KITAJIMA

IPC: H01F27/32 ,  H01F5/02 ,  H01F27/28

CPC classification number: H01F27/325 ,  H01F5/02 ,  H01F27/2823 ,  H01F2005/022

Abstract: A coil device includes a bobbin, a first winding part, and a second winding part. A partition portion is formed on an outer peripheral surface of the bobbin. The first winding part is wound around the outer peripheral surface at one side of the partition portion. The second winding part is wound around the outer peripheral surface at the other side of the partition portion and has an inner winding layer and an outer winding layer located farther to the outer peripheral surface at the other side than the inner winding layer.