公开(公告)号：US20190228901A1

公开(公告)日：2019-07-25

申请号：US16236562

申请日：2018-12-30

Applicant: TDK Corporation

Inventor： Yugo ASAI ,  Tsutomu KOBAYASHI ,  Daisuke URABE ,  Hiroshi SUZUKI ,  Emi ITO ,  Toshio TOMONARI

IPC: H01F27/28 ,  H03H7/09 ,  H03H1/00 ,  H01F17/04 ,  H01F27/06

Abstract: Disclosed herein is a common mode filter that includes a winding core part and first and second wires wound in a same direction around the winding core part. The first and second wires constitute a first winding block on one endmost side in an axial direction of the winding core part, a second winding block on other endmost side in the axial direction of the winding core part, and a third winding block positioned between the first and second winding blocks. The second winding block is a winding block at an odd-numbered position counted from the first winding block. The first and second wires cross each other in an area between the first and third winding blocks and in an area between the second and third winding blocks.

公开(公告)号：US20180097497A1

公开(公告)日：2018-04-05

申请号：US15723392

申请日：2017-10-03

Applicant: TDK Corporation

Inventor： Tsutomu KOBAYASHI ,  Toshio TOMONARI ,  Emi ITO ,  Yuma KOMAYA

IPC: H03H7/09

CPC classification number: H03H7/09 ,  H01F17/045 ,  H01F19/08 ,  H01F27/2828 ,  H03H1/0007 ,  H03H7/425 ,  H03H7/427 ,  H03H2001/0035

Abstract: Disclosed herein is a differential mode filter that includes first and second terminal electrodes provided on a first flange part of a core, and first and second wires wound around a winding core part of the core in an opposite direction to each other and connected respectively to the first and second terminal electrodes. The first and second wires cross each other on the winding core part to form a plurality of crossing portions that include first, second, and third crossing portions that are first, second, and third occurrences counting from the one end of the first and second wires, respectively. A first crossing angle between the first and second wires at the first crossing portion is larger than at least one of second and third crossing angles between the first and second wires at the second and third portions, respectively.

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.