公开(公告)号：US20210225580A1

公开(公告)日：2021-07-22

申请号：US17144383

申请日：2021-01-08

Applicant: TDK CORPORATION ,  TDK KOREA CORPORATION

Inventor： Hiroyuki IWATA ,  Kiyofumi FUJIWARA ,  Sepung KI ,  Chihu AN

IPC: H01F27/29 ,  H01F27/28 ,  H01F27/24

Abstract: A coil device including a magnetic core having a winding core around which a wire is wound to form a coil, and four terminal electrodes attached to an outer end surface of a flange formed at an end of the winding core along a winding axis. A recess is formed on the outer end surface of the flange, and each of the terminal electrodes includes a first rising piece loosely entering the recess, and a mounting piece integrally formed with the first rising piece and adhered to the outer end surface of the flange.

公开(公告)号：US20220406514A1

公开(公告)日：2022-12-22

申请号：US17846804

申请日：2022-06-22

Applicant: TDK CORPORATION

Inventor： Hiroyuki IWATA ,  Kiyofumi FUJIWARA

IPC: H01F27/28 ,  H01F27/29 ,  H01F27/24 ,  H01F27/34

Abstract: A coil device includes a magnetic core, a first wire and a second wire, and a first terminal electrode and a second terminal electrode. The magnetic core includes a winding core portion and a flange portion. A first end of the first wire is connected to a first wire-joint portion of the first terminal electrode. A first end of the second wire is connected to a second wire-joint portion of the first terminal electrode. A second end of the first wire is connected to a first wire joint portion of the second terminal electrode. A second end of the second wire is connected to a second wire-joint portion of the second terminal electrode. The first wire-joint portion and the second wire-joint portion are arranged away from each other. The first wire-joint portion and the second wire joint portion are arranged away from each other.

公开(公告)号：US20210304943A1

公开(公告)日：2021-09-30

申请号：US17209761

申请日：2021-03-23

Applicant: TDK CORPORATION ,  TDK KOREA CORPORATION

Inventor： Kiyofumi FUJIWARA ,  Hiroyuki IWATA ,  Eietsu ABE ,  Sepung KI ,  Chihu AN

IPC: H01F17/04 ,  H01F27/29 ,  H01F27/28

Abstract: The present invention provides a coil device which includes two coil elements in the same device and achieves an improved wire occupancy. The coil device includes a core including a winding core, and a winding wire part of which a first wire and a second wire are wound in a plurality of layers around the winding core, wherein the winding wire part includes a first part in which the first wire and the second wire of a same turn are wound adjacent to each other on a same layer, and a second part in which the first wire and the second wire of a same turn are wound in different layers without being adjacent to each other.

公开(公告)号：US20160217919A1

公开(公告)日：2016-07-28

申请号：US15003602

申请日：2016-01-21

Applicant: TDK CORPORATION

Inventor： Hiroyuki IWATA ,  Nobuo TAKAGI ,  Hiroyuki ABE ,  Koji SHIMURA

IPC: H01F27/29 ,  H01F27/28

CPC classification number: H01F27/29 ,  H01F17/045 ,  H01F27/306

Abstract: A coil device includes a magnetic core and terminal electrodes. The terminal electrodes include attachment pieces, wire connection rising pieces, connection pieces, and fillet forming pieces. The wire connection rising pieces are integrally risen from one ends in a longitudinal direction of the attachment pieces along a side surface in the X-axis direction of a flange. The connection pieces are integrally formed with upper end sides of the wire connection rising pieces and have welded balls connected to lead parts of a wire by laser welding. The fillet forming pieces are integrally risen from one ends in a lateral direction crossing the longitudinal direction of the attachment pieces along a side surface in the Y-axis direction of the flange. Laser shielding members are arranged between the welded balls and the flange of a magnetic core.

Abstract translation: 线圈装置包括磁芯和端子电极。 端子电极包括附件，线连接升降件，连接件和圆角成形件。 线连接升降件沿着凸缘的X轴方向的侧面从连接片的纵向方向的一端整体上升。 连接件与电线连接升降件的上端侧整体形成，并且通过激光焊接将焊接球连接到导线的引线部分。 圆角成形片沿着与凸缘的Y轴方向的侧面沿着与安装片的长度方向交叉的横向的一端一体地升起。 激光屏蔽构件设置在焊接球和磁芯的凸缘之间。