Coil component

Patent metadata

Field	Value
Publication number	US-11424070-B2
Application number	US-201916444747-A
Country	US
Kind code	B2
Filing date	Jun 18, 2019
Priority date	Jun 19, 2018
Publication date	Aug 23, 2022
Grant date	Aug 23, 2022

Abstract

Disclosed herein is a coil component that includes: a first magnetic core extending in the first direction and around which the wires are wound; a second magnetic core having a first wall surface part covering the first magnetic core from one side in the second direction, a second wall surface part covering the first magnetic core from other side in the second direction, and a third wall surface part covering the first magnetic core from one side in the third direction; first and second terminal electrodes connected respectively to one ends of the wires and arranged in the first direction along the first wall surface part; and third and fourth terminal electrodes connected respectively to other ends of the wires and arranged in the first direction along the second wall surface part.

First claim

What is claimed is:

1. A coil component comprising:
a first magnetic core having a winding core part whose axis direction is a first direction, a first flange part provided at one end of the winding core part in the first direction, and a second flange part provided at other end of the winding core part in the first direction;
a second magnetic core having a first wall surface part covering the first magnetic core from one side in a second direction perpendicular to the first direction, a second wall surface part covering the first magnetic core from other side in the second direction, and a third wall surface part covering the first magnetic core from a further side in a third direction perpendicular to the first and second directions;
first and second wires wound around the winding core part of the first magnetic core;
first and second terminal electrodes connected respectively to one ends of the first and second wires and arranged in the first direction along the first wall surface part of the second magnetic core as viewed in the third direction; and
third and fourth terminal electrodes connected respectively to other ends of the first and second wires and arranged in the first direction along the second wall surface part of the second magnetic core as viewed in the third direction,
wherein the first and third terminal electrodes are arranged in the second direction,
wherein the second and fourth terminal electrodes are arranged in the second direction,
wherein the first wall surface part of the second magnetic core has first and second cut parts,
wherein the second wall surface part of the second magnetic core has third and fourth cut parts, and
wherein a part of the first terminal electrode is disposed in the first cut part,
wherein a part of the second terminal electrode is disposed in the second cut part,
wherein a part of the third terminal electrode is disposed in the third cut part, and
wherein a part of the fourth terminal electrode is disposed in the fourth cut part.

2. The coil component as claimed in claim 1 , wherein the first to fourth terminal electrodes are provided so as to cover the third wall surface part of the second magnetic core.

3. The coil component as claimed in claim 1 , further comprising a plate-like member covering the first magnetic core from another side in the third direction.

4. The coil component as claimed in claim 3 , wherein the plate-like member constitutes a third magnetic core.

5. The coil component as claimed in claim 4 , wherein the first and second flange parts of the first magnetic core and the third magnetic core are bonded through an adhesive containing a magnetic material.

6. The coil component as claimed in claim 3 , wherein the plate-like member is made of a non-magnetic material.

7. The coil component as claimed in claim 1 ,
wherein the winding core part of the first magnetic core has a first winding area positioned at the first flange part side as viewed from a center in the first direction and a second winding area positioned at the second flange part side as viewed from the center in the first direction, and
wherein the first and second wires are wound around the first and second winding areas, respectively.

8. The coil component as claimed in claim 7 , wherein the winding core part of the first magnetic core has a protrusion part provided at a position overlapping the center in the first direction.

9. The coil component as claimed in claim 1 , wherein the first and second flange parts of the first magnetic core and at least one of the first to third wall surface parts of the second magnetic core are bonded together through an adhesive containing a magnetic material.

10. The coil component as claimed in claim 1 , wherein each of the first to fourth terminal electrodes does not overlap the first and second flange parts in the first direction.

11. The coil component as claimed in claim 10 , wherein each of the first to fourth terminal electrodes does not overlap the first and second flange parts in the second direction.

12. The coil component as claimed in claim 1 ,
wherein a first winding area of the winding core part is sandwiched between the first and third terminal electrode in the second direction, and
wherein a second winding area of the winding core part is sandwiched between the second and fourth terminal electrode in the second direction.

13. The coil component as claimed in claim 1 , further comprising a plate-like member covering the first magnetic core from other side in the third direction,
wherein the first to fourth cut parts are covered with the plate-like member.

Assignees

• Tdk Corp

Inventors

• Someya Shuhei
• Ohi Kouyu
• Mikogami Tasuku

Classifications

• H01F17/045 Primary

  with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core · CPC title

• H01F27/292

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• H01F2017/0093

  Common mode choke coil · CPC title

• H01F27/29

  Terminals; Tapping arrangements {for signal inductances} · CPC title

• H01F27/2852

  Construction of conductive connections, of leads · CPC title