# US 2018/0322996 A1 · Magnetic coupling coil component

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- Number: US 2018/0322996 A1
- Document ID: US20180322996A1
- Status: Published application
- Kind: A1
- Application number: 15/937,137
- Filed: 2018-03-27
- Published: 2018-11-08
- Earliest claimed: 2017-05-02
- Assignees: Taiyo Yuden Co., Ltd.
- Applicants: Taiyo Yuden Co., Ltd.
- Inventors: Satoshi KOBAYASHI; Tomoo KASHIWA
- Web page: https://patentgrep.com/patent/US20180322996A1

## CPC

- H01F 27/24: Magnetic cores
- H01F 17/045: {with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core}
- H01F 27/2823: {Wires (H01F27/2866 takes precedence)}
- H01F 27/2828: {Construction of conductive connections, of leads}
- H01F 27/292: {Surface mounted devices}
- H01F 27/324: {Insulation between coil and core, between different winding sections, around the coil; Other insulation structures}
- H01F 27/38: Auxiliary core members; Auxiliary coils or windings
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES

## Abstract

One object of the present invention is to provide a magnetic coupling coil component having a coupling coefficient that can be readily adjusted. A coil component according to one embodiment of the present invention includes: a drum core including a winding core, a first flange, and a second flange, the first flange being provided on one axial end of the winding core, the second flange being provided on another axial end of the winding core; a spacer provided on a surface of the winding core between the first flange and the second flange, the spacer being separate from the winding core; a first winding wire wound around the winding core between the first flange and the spacer; and a second winding wire wound around the winding core between the second flange and the spacer.

## Claims

### Claim 1

A coil component, comprising:
a drum core including a winding core, a first flange, and a second flange, the first flange being provided on one axial end of the winding core, the second flange being provided on another axial end of the winding core;
a spacer provided on a surface of the winding core between the first flange and the second flange, the spacer being separate from the winding core;
a first winding wire wound around the winding core between the first flange and the spacer; and
a second winding wire wound around the winding core between the second flange and the spacer.

### Claim 2 (depends on 1)

The coil component of claim 1, wherein the spacer is made of a flexible member.

### Claim 3 (depends on 1)

The coil component of claim 1, wherein at least a part of the spacer is made of an insulating sheet.

### Claim 4 (depends on 3)

The coil component of claim 3, wherein the insulating sheet has a band shape.

### Claim 5 (depends on 3)

The coil component of claim 3, wherein the insulating sheet is provided on the drum core so as to extend along an axial direction of the winding core.

### Claim 6 (depends on 3)

The coil component of claim 3, wherein
one end of the insulating sheet is fixed to the first flange, and another end of the insulating sheet is fixed to the second flange,
the first winding wire is wound around the winding core with the insulating sheet interposed therebetween, and
the second winding wire is wound around the winding core with the insulating sheet interposed therebetween.

### Claim 7 (depends on 1)

The coil component of claim 1, wherein the spacer is a ring fitted around the winding core.

### Claim 8 (depends on 7)

The coil component of claim 7, wherein the ring is made of an insulating material.

### Claim 9 (depends on 7)

The coil component of claim 7, wherein the ring is made of a magnetic material.

### Claim 10 (depends on 7)

The coil component of claim 7, wherein the ring is positioned eccentrically to the winding core.

### Claim 11 (depends on 1)

The coil component of claim 1, further comprising an insulating exterior portion provided around the winding core so as to cover at least a part of the winding wires,
wherein the spacer includes a part of the exterior portion.