公开(公告)号：US20230136361A1

公开(公告)日：2023-05-04

申请号：US18088674

申请日：2022-12-26

Applicant: TDK Corporation

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

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

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：US20210391109A1

公开(公告)日：2021-12-16

申请号：US17342080

申请日：2021-06-08

Applicant: TDK Corporation

Inventor： Kosuke KUNITSUKA ,  Keigo HIGASHIDA ,  Emi ITO ,  Daisuke URABE ,  Yugo ASAI

IPC: H01F17/04 ,  H01F27/29 ,  H01F27/28 ,  H01F27/30

Abstract: Disclosed herein is a common mode filter that includes first and second wires wound in the same direction around the winding core part. The first and second wires have first to third layer winding portions, a first crossing portion positioned between the first and third layer winding portions, and a second crossing portion positioned between the second and third layer winding portions. The vertical positions of the first and second wires are reversed at least partially between the first and third layer winding portions, and the vertical positions of the first and second wires are reversed at least partially between the second and third layer winding portions.

公开(公告)号：US20220384093A1

公开(公告)日：2022-12-01

申请号：US17828335

申请日：2022-05-31

Applicant: TDK Corporation

Inventor： Hanako YOSHINO ,  Keigo HIGASHIDA ,  Daisuke URABE ,  Takashi ARASAWA ,  Yugo ASAI

IPC: H01F27/30 ,  H01F27/29

Abstract: Disclosed herein is a coil component that includes a drum core; a terminal fitting fixed respectively to the flange part of the drum core; and a wire wound around the winding core part of the drum core. The terminal fitting has a wire connecting part to which the wire is connected and a mounting part having springiness with respect to the drum core. The distance between the flange part and the mounting part is larger than the distance between the flange part and the wire connecting part.

公开(公告)号：US20210280358A1

公开(公告)日：2021-09-09

申请号：US17189887

申请日：2021-03-02

Applicant: TDK Corporation

Inventor： Yugo ASAI ,  Aoi TOKIWA ,  Daisuke URABE

IPC: H01F27/28 ,  H01F27/26 ,  H01F27/29 ,  H01F41/02 ,  H01F41/064

Abstract: Disclosed herein is a coil component that includes: a drum-shaped core including a first flange part, a second flange part, and a winding core part positioned between the first and second flange parts; a plurality of first terminal electrodes provided on the first flange part; a plurality of second terminal electrodes provided on the second flange part; and a plurality of wires wound around the winding core part, each of the plurality of wires having a first end connected to an associated one of the first terminal electrodes, and having a second end connected to an associated one of the second terminal electrodes. Each of the first and second flange parts has a tapered groove whose side surfaces are inclined. The plurality of wires are accommodated in the tapered grooves.

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.

公开(公告)号：US20210280357A1

公开(公告)日：2021-09-09

申请号：US17189854

申请日：2021-03-02

Applicant: TDK Corporation

Inventor： Yugo ASAI ,  Aoi TOKIWA ,  Daisuke URABE

IPC: H01F27/28 ,  H01F27/26 ,  H01F27/29 ,  H01F41/064

Abstract: Disclosed herein is a coil component that includes: a drum-shaped core including a flange part and a winding core part; a terminal fitting fixed to the flange part; and a wire wound around the winding core part and having an end portion connected to the terminal fitting. The flange part has an outer surface positioned on a side opposite to the winding core part. The terminal fitting has a positioning part for positioning the wire and a weld bead formed as a result of welding between the terminal fitting and the end portion of the wire. The positioning part and weld bead are both positioned on the outer surface of the flange part. The weld bead has a protruding part that does not overlap the flange part.

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：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：US20210280356A1

公开(公告)日：2021-09-09

申请号：US17189824

申请日：2021-03-02

Applicant: TDK Corporation

Inventor： Yugo ASAI ,  Aoi TOKIWA ,  Daisuke URABE

IPC: H01F27/28 ,  H01F27/26

Abstract: Disclosed herein is a coil component that includes: a drum-shaped core including first and second flange parts and a winding core part; first terminal electrodes provided on the first flange part; second terminal electrodes provided on the second flange part; a plurality of wires wound around the winding core part, each of the plurality of wires having a first end connected to an associated one of the first terminal electrodes, and having a second end connected to an associated one of the second terminal electrodes; and a plate-like core fixed to the first and second flange parts. Each of the first and second flange parts has a first groove formed in a surface facing the plate-like core. The plurality of wires are positioned in parallel to each other in each of the first grooves formed in the first and second flange parts.