公开(公告)号：US20250118483A1

公开(公告)日：2025-04-10

申请号：US18901644

申请日：2024-09-30

Applicant: TDK CORPORATION

Inventor： Taichi WATANABE ,  Tatsuya SATO ,  Yugo ASAI

IPC: H01F27/29 ,  H01F27/30

Abstract: A coil device includes a winding section comprised of a wound wire, a core, and a terminal fitting attached to the flange portion. The core includes a winding core portion provided with the winding section and a flange portion formed at an end of the winding core portion in its axial direction. The terminal fitting includes a main body portion disposed on an outer end surface of the flange portion, a mounting portion continuing to the main body portion and bending from the outer end surface toward a mounting surface of the flange portion, and a wire connection portion continuing to the main body portion and bending from the outer end surface toward a side surface of the flange portion. The mounting portion includes a plurality of mounting pieces arranged with at least one gap. The main body portion is adhered on the outer end surface by adhesive.

公开(公告)号：US20240212919A1

公开(公告)日：2024-06-27

申请号：US18542964

申请日：2023-12-18

Applicant: TDK CORPORATION

Inventor： Taichi WATANABE ,  Tatsuya SATO ,  Yugo ASAI ,  Daisuke URABE ,  Keigo HIGASHIDA ,  Hanako YOSHINO ,  Takashi ARASAWA

IPC: H01F27/28 ,  H01F27/29 ,  H01F27/30

CPC classification number: H01F27/2828 ,  H01F27/29 ,  H01F27/306

Abstract: A coil device includes a coil, a core, and a terminal fitting. The coil includes a winding portion and a lead portion led out from the winding portion. The core includes a winding core portion provided with the winding portion and a flange portion formed at an end in a first direction parallel to an axis of the winding core portion. The terminal fitting is provided with an engagement portion for engaging with the flange portion. The flange portion includes a first side surface located on one side in a second direction parallel to a mounting surface of the flange portion and a second side surface located on the other side in the second direction. The engagement portion is disposed from the first side surface to the second side surface and connected to the lead portion.