公开(公告)号：US20200013545A1

公开(公告)日：2020-01-09

申请号：US16483376

申请日：2018-01-15

Applicant: TDK CORPORATION

Inventor： Hideomi TAKAHASHI ,  Toshifumi KOMACHI ,  Toshio TOMONARI

IPC: H01F27/34 ,  H01F27/245 ,  H01F27/28 ,  H01F27/29

Abstract: An object of the present invention is to provide a coil component in which leakage of magnetic flux from a magnetic gap is reduced. A coil component includes: a drum-shaped core 20 having a winding core part 30 with a gap G formed therein and first and second flange parts 31 and 32; a plate-like core 40 fixed to the first and second flange parts 31 and 32; and wires W1 to W3 wound around the winding core part 30 and each having one end connected to a terminal electrode provided on the first flange part 31 and the other end connected to a terminal electrode provided on the second flange part 32. According to the present invention, the gap G formed in the winding core part 30 functions as a magnetic gap, and magnetic flux leaking from the magnetic gap is shielded by the plate-like core 40. Thus, even when the magnetic gap is provided to reduce a tolerance due to characteristic variation of a magnetic material, it is possible to solve the problem that other electronic components are affected by the leakage magnetic flux.

公开(公告)号：US20190333685A1

公开(公告)日：2019-10-31

申请号：US16394209

申请日：2019-04-25

Applicant: TDK CORPORATION

Inventor： Shuhei SOMEYA ,  Tasuku MIKOGAMI ,  Yuichi ANZAI ,  Hideomi TAKAHASHI

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

Abstract: Disclosed herein is a coil component that includes: a first core having a mounting surface and a coil placing surface positioned opposite to the mounting surface; a lower coil placed on the coil placing surface such that a coil axis of the lower coil extends substantially perpendicular to the coil placing surface, the lower coil having one end drawn to a first area of the mounting surface and other end drawn to a second area of the mounting surface; and an upper coil substantially coaxially stacked on the lower coil, the upper coil having one end drawn to a third area of the mounting surface and other end drawn to a fourth area of the mounting surface. The lower coil is greater in a coil diameter than the upper coil.