公开(公告)号：US20220399157A1

公开(公告)日：2022-12-15

申请号：US17375740

申请日：2021-07-14

Applicant: TDK CORPORATION

Inventor： Kazunori ARIMITSU ,  Nobuo KITAJIMA ,  Fuyuki MIURA ,  Takehiko NARISAWA ,  Kiichi FUJISAWA

IPC: H01F27/29 ,  H01F27/28

Abstract: A highly reliable coil device is provided. An inductor 1 includes a coil 2 formed of a flat wire, a first terminal 4a including a first wire connecting portion 42a formed with a first accommodation recessed portion 421a in which a first lead-out portion 3a of the coil 2 is accommodated, and a second terminal 4b including a second wire connecting portion 42b formed with a second accommodation recessed portion 421b in which a second lead-out portion 3b of the coil 2 is accommodated, in which the first accommodation recessed portion 421a and the second accommodation recessed portion 421b are displaced from each other along a winding axis direction of the coil 2.

公开(公告)号：US20240282510A1

公开(公告)日：2024-08-22

申请号：US18583170

申请日：2024-02-21

Applicant: TDK CORPORATION

Inventor： Kazunori ARIMITSU ,  Kiichi FUJISAWA ,  Masashi HAMA ,  Nobuo KITAJIMA ,  Fuyuki MIURA ,  Takehiko NARISAWA ,  Masanori SATO

IPC: H01F27/29 ,  H01F27/28

CPC classification number: H01F27/292 ,  H01F27/2828

Abstract: A coil device has a wound portion, a leadout portion led out from the wound portion, a terminal including a wire connecting portion connected to the leadout portion, and an element body covering the wound portion, the leadout portion and the wire connecting portion. A winding axis of the wound portion is perpendicular to a mounting facing surface of the element body. The leadout portion has a bent portion bent so as to protrude inward when viewed along the winding axis, and an inner angle of the bent portion is an obtuse angle.

公开(公告)号：US20230162906A1

公开(公告)日：2023-05-25

申请号：US17984020

申请日：2022-11-09

Applicant: TDK CORPORATION

Inventor： Kazunori ARIMITSU ,  Nobuo KITAJIMA ,  Kiichi FUJISAWA ,  Fuyuki MIURA ,  Takehiko NARISAWA ,  Makoto TAKAHASHI

IPC: H01F27/29

CPC classification number: H01F27/29

Abstract: An inductor 1 includes a coil 2 made of a flat wire, a terminal 4a including a wire connecting portion 42a connected to a lead portion 3a of the coil 2, a terminal 4b including a wire connecting portion 42b connected to a lead portion 3b of the coil 2, and a core 8 that covers the coil 2 together with the wire connecting portion 42a and the wire connecting portion 42b. The wire connecting portion 42a is positioned outside the lead portion 3a that is led out in a front-rear direction of the core 8, along a left-right direction of the core 8. The wire connecting portion 42b is positioned outside the lead portion 3b that is led out in the front-rear direction of the core 8, along the left-right direction of the core 8.

公开(公告)号：US20240282509A1

公开(公告)日：2024-08-22

申请号：US18583137

申请日：2024-02-21

Applicant: TDK CORPORATION

Inventor： Kazunori ARIMITSU ,  Kiichi FUJISAWA ,  Masashi HAMA ,  Nobuo KITAJIMA ,  Makoto TAKAHASHI ,  Katsushi YASUHARA ,  Hironobu FURUKAWA ,  Ryuya KON

IPC: H01F27/29 ,  H01F27/24

CPC classification number: H01F27/292 ,  H01F27/24

Abstract: A coil device has a wound portion, a leadout portion led out from the wound portion in a first direction, and an element body covering the wound portion and the leadout portion. A winding axis of the wound portion is perpendicular to a mounting facing surface of the element body and is displaced to a second direction opposite to the first direction with respect to a center of the element body. An outer circumferential surface of the wound portion is distorted so as to bulge outward in the first direction from the outer circumferential surface of the wound portion.

公开(公告)号：US20230162907A1

公开(公告)日：2023-05-25

申请号：US17986033

申请日：2022-11-14

Applicant: TDK CORPORATION

Inventor： Kazunori ARIMITSU ,  Nobuo KITAJIMA ,  Kiichi FUJISAWA

IPC: H01F27/29 ,  H01F41/04

CPC classification number: H01F27/29 ,  H01F41/04

Abstract: An inductor includes a coil; terminals including wire connecting portions connected to lead portions of the coil, and base portions positioned at substantially the same height as a bottom surface of the coil and holding the wire connecting portions; and a core covering the coil together with the wire connecting portions and the base portions. The base portions include main branch portions and sub branch portions. Inner edges of the main branch portions are formed with curved portions curved along an outer peripheral surface of the coil at positions separated from the outer peripheral surface of the coil, respectively. Inner edges of the sub branch portions are formed with curved portions curved along the outer peripheral surface of the coil at positions separated from the outer peripheral surface of the coil, respectively.