公开(公告)号：US20240039503A1

公开(公告)日：2024-02-01

申请号：US18379596

申请日：2023-10-12

Applicant: TDK Corporation

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

IPC: H03H7/42 ,  H01F27/28 ,  H03H7/09 ,  H03H1/00 ,  H01F27/06 ,  H01F17/04 ,  H01F27/00

CPC classification number: H03H7/427 ,  H01F27/2823 ,  H03H7/09 ,  H03H1/00 ,  H01F27/06 ,  H01F17/04 ,  H01F17/045 ,  H01F27/006 ,  H01F2017/0093

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：US20210125772A1

公开(公告)日：2021-04-29

申请号：US17141695

申请日：2021-01-05

Applicant: TDK Corporation

Inventor： Toshio TOMONARI ,  Tsutomu KOBAYASHI ,  Kazunori ARIMITSU

IPC: H01F27/28 ,  H01F17/04 ,  H01F1/047 ,  H01F27/24

Abstract: Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.

公开(公告)号：US20190172630A1

公开(公告)日：2019-06-06

申请号：US16190819

申请日：2018-11-14

Applicant: TDK CORPORATION

Inventor： Yugo ASAI ,  Tsutomu KOBAYASHI ,  Daisuke URABE ,  Hiroshi SUZUKI

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

Abstract: A coil device having excellent mode conversion property which can be suitably used as a common mode filter. The coil device has a core, a first collar part and a second collar part provided to both sides of the core in axis direction, a coil part at least having a first wire and a second wire which are wound around the core, and terminals provided to the collar parts. One lead part of the wire heading towards the coil part from the terminals, and one lead part of the wire heading towards the coil part from the second terminal are placed in close proximity at least between an inner face of the collar part and the coil part.

公开(公告)号：US20240258015A1

公开(公告)日：2024-08-01

申请号：US18633202

申请日：2024-04-11

Applicant: TDK Corporation

Inventor： Toshio TOMONARI ,  Tsutomu KOBAYASHI ,  Kazunori ARIMITSU

IPC: H01F27/28 ,  H01F1/047 ,  H01F17/04 ,  H01F27/24

CPC classification number: H01F27/2823 ,  H01F1/047 ,  H01F17/045 ,  H01F27/24 ,  H01F27/28

Abstract: Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.

公开(公告)号：US20190229697A1

公开(公告)日：2019-07-25

申请号：US16236563

申请日：2018-12-30

Applicant: TDK Corporation

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

IPC: H03H7/09 ,  H01F27/29 ,  H01F27/24

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. A predetermined one turn of the first wire crosses a predetermined one turn of the second wire a plurality of times.

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：US20230095851A1

公开(公告)日：2023-03-30

申请号：US18072845

申请日：2022-12-01

Applicant: TDK Corporation

Inventor： Toshio TOMONARI ,  Tsutomu KOBAYASHI ,  Kazunori ARIMITSU

IPC: H01F27/28 ,  H01F17/04 ,  H01F1/047 ,  H01F27/24

Abstract: Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.

公开(公告)号：US20200343035A1

公开(公告)日：2020-10-29

申请号：US16928407

申请日：2020-07-14

Applicant: TDK Corporation

Inventor： Toshio TOMONARI ,  Tsutomu KOBAYASHI ,  Kazunori ARIMITSU

IPC: H01F27/28 ,  H01F17/04 ,  H01F1/047 ,  H01F27/24

Abstract: Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.

公开(公告)号：US20170301455A1

公开(公告)日：2017-10-19

申请号：US15483099

申请日：2017-04-10

Applicant: TDK Corporation

Inventor： Tsutomu KOBAYASHI ,  Toshio Tomonari ,  Emi Ito ,  Yuma Koyama

IPC: H01F27/28 ,  H03H1/00 ,  H01F27/24

CPC classification number: H01F27/2823 ,  H01F17/045 ,  H01F19/04 ,  H01F27/24 ,  H01F2027/2838 ,  H03H1/00 ,  H03H2001/005 ,  H03H2001/0092

Abstract: Disclosed herein is a differential mode filter including a core including a winding core part, a first wire wound around the winding core part in a first winding direction, and a second wire wound around the winding core part in a second winding direction opposite to the first winding direction. The winding core part includes first and second winding surfaces. A first crossing angle between the first and second wires that cross a plurality of times on the first winding surface is smaller than that a second crossing angle between the first and second wires that cross a plurality of times on the second winding surface.