公开(公告)号：US20170229230A1

公开(公告)日：2017-08-10

申请号：US15426445

申请日：2017-02-07

Applicant: TDK Corporation

Inventor： Yoshihiro KAWASAKI ,  Syun Ashizawa ,  Hirohumi Asou ,  Nobuo Takagi

IPC: H01F27/255 ,  H01F27/29 ,  H01F27/28

CPC classification number: H01F27/255 ,  H01F3/10 ,  H01F27/2823 ,  H01F27/2828 ,  H01F27/292

Abstract: Disclosed herein is a coil component that includes a drum core having a winding core and first and second flange portions provided at opposite ends of the winding core; a wire wound around the winding core; terminal electrodes provided in the first and second flange portions, the terminal electrodes being connected to ends of the wire; and a magnetic top plate made of magnetic-powder containing resin in which soft magnetic metal powder having a flat shape is mixed in binder resin, the magnetic top plate being fixed to the first and second flange portions.

公开(公告)号：US09715961B2

公开(公告)日：2017-07-25

申请号：US14947953

申请日：2015-11-20

Applicant: TDK CORPORATION

Inventor： Nobuo Takagi ,  Toshio Tomonari ,  Setu Tsuchida ,  Syun Ashizawa

IPC: H01F27/02 ,  H01F27/28 ,  H01F27/29 ,  H01F17/04

CPC classification number: H01F27/2823 ,  H01F17/045

Abstract: A pulse transformer includes a winding drum and a coil portion in which wires are wound around the winding core. The coil portion includes a first general winding area, a second general winding area, and a low density winding area. In the first general winding area, the wires are mutually closely wound around the winding core. In the second general winding area, the wires continuing from the wires of the first general winding area are mutually closely wound around the winding core. The low density winding area is formed along a winding axis of the winding core between the first general winding area and the second general winding area and has a low winding density of the wires along the winding axis.

公开(公告)号：US11967452B2

公开(公告)日：2024-04-23

申请号：US17404146

申请日：2021-08-17

Applicant: TDK CORPORATION

Inventor： Chen Wang ,  Syun Ashizawa ,  Satoshi Sugimoto

IPC: H01F27/28 ,  H01F27/02 ,  H01F27/24 ,  H01F27/32 ,  H01F41/12

CPC classification number: H01F27/327 ,  H01F27/02 ,  H01F27/24 ,  H01F27/2866 ,  H01F41/125

Abstract: A coil device includes a first conductor, a second conductor, and a core. The second conductor is disposed inside the first conductor and at least partly extending along the first conductor. The core internally arranges the first conductor and the second conductor. An insulating layer is formed at least between the first conductor and the second conductor.

公开(公告)号：USD1006754S1

公开(公告)日：2023-12-05

申请号：US29824625

申请日：2022-01-26

Applicant: TDK CORPORATION

Designer： Chen Wang ,  Syun Ashizawa ,  Satoshi Sugimoto

Abstract: FIG. 1 is a front elevational view of a coil component, showing the new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a left-side elevational view thereof;
FIG. 4 is a right-side elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a front, right-side, bottom perspective view thereof; and,
FIG. 8 is an enlarged front, right-side, bottom perspective partial view.
The broken lines depict parts of the coil component that form no part of the claimed design. The dot-dash broken lines define the bounds of the claimed design and form no part thereof.

公开(公告)号：USD997877S1

公开(公告)日：2023-09-05

申请号：US29791220

申请日：2022-01-05

Applicant: TDK Corporation

Designer： Nobuo Takagi ,  Toshio Tomonari ,  Setu Tsuchida ,  Syun Ashizawa

Abstract: FIG. 1 is a front view of a first embodiment of a coil component showing our new design;
FIG. 2 is a back view of the design shown in FIG. 1;
FIG. 3 is a left side view of the design shown in FIG. 1;
FIG. 4 is a top view of the design shown in FIG. 1;
FIG. 5 is a bottom view of the design shown in FIG. 1;
FIG. 6 is a perspective view of the design shown in FIG. 1;
FIG. 7 is a front view of a second embodiment of a coil component showing our new design;
FIG. 8 is a back view of the design shown in FIG. 7;
FIG. 9 is a left side view of the design shown in FIG. 7;
FIG. 10 is a top view of the design shown in FIG. 7;
FIG. 11 is a bottom view of the design shown in FIG. 7; and,
FIG. 12 is a perspective view of the design shown in FIG. 7.
A right side view of the design according to the first embodiment is symmetrical to FIG. 3, and is not illustrated.
A right side view of the design according to the second embodiment is symmetrical to FIG. 9, and is not illustrated.

公开(公告)号：US11322296B2

公开(公告)日：2022-05-03

申请号：US16504082

申请日：2019-07-05

Applicant: TDK CORPORATION

Inventor： Tasuku Mikogami ,  Shuhei Someya ,  Syun Ashizawa ,  Setu Tsuchida

IPC: H01F27/29 ,  H01F27/24 ,  H01F27/28

Abstract: Disclosed herein is a pulse transformer that includes first to fourth terminal electrodes provided on the first flange part, fifth to eighth terminal electrodes provided on the second flange part, first and second wires wound around the winding core part having one end connected to the first and second terminal electrodes and other end connected to the seventh and eighth terminal electrodes, and third and fourth wire wound around the winding core part having one end connected to third and fourth terminal electrodes and other end connected to the fifth and sixth terminal electrodes. A winding direction of the first and third wires is opposite to a winding direction of the second and fourth wires.

公开(公告)号：US10770219B2

公开(公告)日：2020-09-08

申请号：US15848618

申请日：2017-12-20

Applicant: TDK Corporation

Inventor： Yoshihiro Kawasaki ,  Kouyu Ohi ,  Hirohumi Asou ,  Syun Ashizawa

IPC: H01F27/30 ,  H01F27/255 ,  H01F27/29 ,  H01F27/28 ,  H01F27/26 ,  H01F5/00

Abstract: Disclosed herein is a coil component that includes a drum core having a winding core part and first and second flange parts provided on both sides of the winding core part; a wire wound around the winding core part; a plurality of terminal electrodes connected with end portions of the wire, each of the terminal electrodes being provided on an associated one of the first and second flange parts; and a top plate fixed to the first and second flange parts. The top plate includes a magnetic layer comprising magnetic powder and binder resin, and a resin layer having a smaller content of the magnetic powder than that of the magnetic layer. The resin layer is positioned between the first and second flange parts and the magnetic layer.

公开(公告)号：US20190237245A1

公开(公告)日：2019-08-01

申请号：US16253044

申请日：2019-01-21

Applicant: TDK Corporation

Inventor： Syun Ashizawa ,  Satoshi Sugimoto ,  Takahiro Banzai ,  Hitoshi Sasaki

IPC: H01F27/28 ,  H01F27/24 ,  H01F27/29 ,  H01F27/32 ,  H01F41/12

CPC classification number: H01F27/2852 ,  H01F27/24 ,  H01F27/29 ,  H01F27/324 ,  H01F41/125

Abstract: Disclosed herein is a coil component that includes a conductor plate; and a magnetic core comprising a magnetic material having conductivity, the magnetic core having a through hole into which the conductor plate is inserted. The conductor plate includes: a metal element body having a body part positioned inside the through hole and a terminal part positioned outside the through hole; a metal film formed on the terminal part, the metal film comprising a metal material having a lower melting point than the metal element body; and an insulating film formed on a surface of the body part without the metal film interposed.

公开(公告)号：US20190189331A1

公开(公告)日：2019-06-20

申请号：US15848618

申请日：2017-12-20

Applicant: TDK Corporation

Inventor： Yoshihiro KAWASAKI ,  Kouyu Ohi ,  Hirohumi Asou ,  Syun Ashizawa

IPC: H01F27/255 ,  H01F27/28 ,  H01F27/29

Abstract: Disclosed herein is a coil component that includes a drum core having a winding core part and first and second flange parts provided on both sides of the winding core part; a wire wound around the winding core part; a plurality of terminal electrodes connected with end portions of the wire, each of the terminal electrodes being provided on an associated one of the first and second flange parts; and a top plate fixed to the first and second flange parts. The top plate includes a magnetic layer comprising magnetic powder and binder resin, and a resin layer having a smaller content of the magnetic powder than that of the magnetic layer. The resin layer is positioned between the first and second flange parts and the magnetic layer.

公开(公告)号：US10210988B2

公开(公告)日：2019-02-19

申请号：US15426390

申请日：2017-02-07

Applicant: TDK Corporation

Inventor： Yoshihiro Kawasaki ,  Syun Ashizawa ,  Hirohumi Asou ,  Nobuo Takagi

IPC: H01F27/29 ,  H01F27/255 ,  H01F27/28 ,  H01F3/10

Abstract: Disclosed herein is a coil component that includes a drum core having a winding core and first and second flange portions provided at opposite ends of the winding core; a wire wound around the winding core; terminal electrodes provided in the first and second flange portions, the terminal electrodes being connected to ends of the wire; and a magnetic top plate made of magnetic-powder containing resin in which magnetic powder is mixed in binder resin, the magnetic top plate being fixed to the first and second flange portions. The magnetic top plate has a lower surface facing the first and second flange portions and an upper surface located opposite to the lower surface. The density of the binder resin is higher in a surface layer part on a side of the lower surface than in a surface layer part on a side of the upper surface.