公开(公告)号：US20230377792A1

公开(公告)日：2023-11-23

申请号：US18319548

申请日：2023-05-18

Applicant: TDK CORPORATION

Inventor： Satoshi SUGIMOTO ,  Syun ASHIZAWA

IPC: H01F27/29 ,  H01F27/28

CPC classification number: H01F27/292 ,  H01F27/2828

Abstract: A coil device includes: a core; a coil including a winding portion disposed inside the core, and a lead-out portion led out from the winding portion; and a terminal including a wire connection portion joined to the lead-out portion and disposed inside the core. The wire connection portion is disposed substantially parallel to a winding axis of the coil.

公开(公告)号：US20210272736A1

公开(公告)日：2021-09-02

申请号：US17186425

申请日：2021-02-26

Applicant: TDK CORPORATION

Inventor： Syun ASHIZAWA ,  Takahiro BANZAI ,  Riku UMEKI ,  Satoshi SUGIMOTO ,  Hitoshi SASAKI

IPC: H01F27/24 ,  H01F27/29 ,  H01F41/04

Abstract: A coil device includes a main core and a sub core. The main core includes a middle leg for winding a coil body and an outer leg connected with the middle leg via a base portion. The sub core is disposed to face the base portion across the middle leg. A gap between the middle leg and the sub core is wider than that between the outer leg and the sub core.

公开(公告)号：US20170263372A1

公开(公告)日：2017-09-14

申请号：US15446321

申请日：2017-03-01

Applicant: TDK CORPORATION

Inventor： Syun ASHIZAWA ,  Toshio TOMONARI ,  Hirohumi ASOU ,  Emi ITO

IPC: H01F27/28 ,  H01F27/29

CPC classification number: H01F27/2823 ,  H01F17/045 ,  H01F27/006 ,  H01F27/29 ,  H01F27/292

Abstract: A coil device includes a winding core with a coil portion wound by a wire and a pair of flanges respectively formed on both sides of the winding core in an axial direction. The coil portion includes a bank winding portion with double layer constituted by the wire wound around an outer circumference of the winding core and a layer winding portion with single layer constituted by the wire wound closely and adjacently to the bank winding portion along the axial direction of the winding core.