公开(公告)号：US20240145151A1

公开(公告)日：2024-05-02

申请号：US18498131

申请日：2023-10-31

Applicant: TDK CORPORATION

Inventor： Masayoshi SHIMAZAKI ,  Osamu OHHATA ,  Naoto TSUKAMOTO ,  Sena YOSHINO ,  Nobuo KITAJIMA ,  Masashi GOTOH

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

CPC classification number: H01F17/04 ,  H01F27/24 ,  H01F27/2823

Abstract: Provided is a coil component including a core member and a wire wound around the core member, wherein a cross section of the core member perpendicular to a winding axis of the wire wound around the core member has a circumference shape comprising at least three first arcs and connecting lines connecting the at least three first arcs adjacent to each other, and each of the at least three first arcs has a predetermined radius and a predetermined central angle for closely contacting the wire and the core member.

公开(公告)号：US20250111982A1

公开(公告)日：2025-04-03

申请号：US18899985

申请日：2024-09-27

Applicant: TDK CORPORATION

Inventor： Katsushi YASUHARA ,  Ryoma NAKAZAWA ,  Yuji SEZAI ,  Sena YOSHINO

IPC: H01F27/255 ,  H01F27/28

Abstract: A coil component may include a core portion including a soft magnetic metal material and a winding portion including a conductor wound. The winding portion may be inside the core portion. The core portion may include a central portion and an outer portion. The central portion may be disposed in an inside diameter portion of the winding portion. The outer portion may be disposed in a portion other than the central portion. The central portion may include a first central portion and a second central portion including different materials. The second central portion may be disposed around the first central portion. H, S, and S1 may be within specific ranges, where H denotes a height of the winding portion, S denotes a sectional area of the central portion, and S1 denotes a sectional area of the first central portion.

公开(公告)号：US20230245812A1

公开(公告)日：2023-08-03

申请号：US18161332

申请日：2023-01-30

Applicant: TDK CORPORATION

Inventor： Naoto TSUKAMOTO ,  Sena YOSHINO ,  Tomohiko AIDA ,  Shigeki YANAGIDA ,  Masashi GOTOH ,  Hirofumi SASAKI ,  Hitoshi SASAKI

IPC: H01F27/255 ,  H01F41/02 ,  H01F27/28 ,  H01F27/30

CPC classification number: H01F27/255 ,  H01F41/0246 ,  H01F27/2823 ,  H01F27/306

Abstract: A coil device 1 comprises a coil 10, a T-shaped core 20 including a columnar portion 21 around which the coil 10 is disposed and a flange 22 formed at a first end 21a of the columnar portion 21 in an axial direction thereof, and an exterior body 30 covering the coil 10 and the columnar portion 21 and made of an exterior material including magnetic particles and a resin. The core 20 is provided with a recess 40 including at least one of a first recess 41 or a second recess 42. The first recess 41 extends between the first end 21a and a second end 21b of the columnar portion 21 in the axial direction. The second recess 42 extends from an inner side towards an outer side of the flange 22.