Coil component

Patent metadata

Field	Value
Publication number	US-12224105-B2
Application number	US-202117189887-A
Country	US
Kind code	B2
Filing date	Mar 2, 2021
Priority date	Mar 3, 2020
Publication date	Feb 11, 2025
Grant date	Feb 11, 2025

Abstract

Disclosed herein is a coil component that includes: a drum-shaped core including a first flange part, a second flange part, and a winding core part positioned between the first and second flange parts; a plurality of first terminal electrodes provided on the first flange part; a plurality of second terminal electrodes provided on the second flange part; and a plurality of wires wound around the winding core part, each of the plurality of wires having a first end connected to an associated one of the first terminal electrodes, and having a second end connected to an associated one of the second terminal electrodes. Each of the first and second flange parts has a tapered groove whose side surfaces are inclined. The plurality of wires are accommodated in the tapered grooves.

First claim

What is claimed is:

1. A coil component comprising:
a drum-shaped core including a first flange part, a second flange part, and a winding core part positioned between the first and second flange parts;
a plurality of first terminal electrodes provided on the first flange part;
a plurality of second terminal electrodes provided on the second flange part; and
a plurality of wires wound around the winding core part, each of the plurality of wires having a first end connected to an associated one of the first terminal electrodes, and having a second end connected to an associated one of the second terminal electrodes,
wherein each of the first and second flange parts has a tapered groove whose side surfaces are inclined,
wherein the plurality of wires are accommodated in the tapered grooves,
wherein a space factor of the plurality of wires in the tapered groove is 60% or more,
wherein the plurality of wires include first and second wires, and
wherein the first wire and the second wire contact each other inside the tapered groove.

2. The coil component as claimed in claim 1 , further comprising a plate-like core fixed to the first and second flange parts,
wherein the tapered groove is formed in a surface of each of the first and second flange parts that face the plate-like core, and
wherein the plate-like core has another groove at a position overlapping the tapered groove of each of the first and second flange parts.

3. The coil component as claimed in claim 1 ,
wherein the side surfaces of the tapered groove includes first and second side surfaces,
wherein the tapered groove has a bottom surface located between the first and second side surfaces, and
wherein a width of the bottom surface of the tapered groove is smaller than a sum of diameters of the first and second wires.

4. The coil component as claimed in claim 3 , wherein the bottom surface of the tapered groove is flat.

5. The coil component as claimed in claim 4 , wherein each of the first and second side surfaces of the tapered groove is curved.

6. A coil component comprising:
a first core including a flange part having first and second surfaces and a winding core part extending in a first direction, the first surface of the flange part having a first groove between first and second sections thereof, the second surface of the flange part being perpendicular to the first direction;
first and second terminal electrodes formed on the second surface of the flange part and arranged in a second direction perpendicular to the first direction;
a first wire wound around the winding core part and connected to the first terminal electrode via the first groove; and
a second wire wound around the winding core part and connected to the second terminal electrode via the first groove,
wherein the first groove has a bottom surface extending in the first and second directions and a first side surface located between the first section of the first surface and the bottom surface,
wherein the first side surface is inclined with respect to the bottom surface such that an angle between the bottom surface and the first side surface is an obtuse angle,
wherein a width of the bottom surface in the second direction is smaller than a sum of diameters of the first and second wires, and
wherein the first wire and the second wire contact each other inside the first groove.

7. The coil component as claimed in claim 6 , wherein at least one of the first and second wires contacts the first side surface.

8. The coil component as claimed in claim 7 ,
wherein the first groove further has a second side surface located between the second section of the first surface and the bottom surface,
wherein the second side surface is inclined with respect to the bottom surface such that an angle between the bottom surface and the second side surface is an obtuse angle,
wherein the first wires contacts the first side surface, and
wherein the second wires contacts the second side surface.

9. The coil component as claimed in claim 6 ,
wherein a second core has a second groove overlapping the first groove, and
wherein the first and second wires are pass through a through hole formed by the first and second grooves.

10. The coil component as claimed in claim 6 , wherein the bottom surface of the first groove is flat.

11. The coil component as claimed in claim 10 , wherein each of the first and second side surfaces of the first groove is curved.

Assignees

• Tdk Corp

Inventors

• Asai Yugo
• Tokiwa Aoi
• Urabe Daisuke

Classifications

• H01F27/29

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

• H01F41/0206

  Manufacturing of magnetic cores by mechanical means (magnetic cores per se H01F27/24) · CPC title

• H01F41/064

  Winding non-flat conductive wires, e.g. rods, cables or cords · CPC title

• H01F27/26

  Fastening parts of the core together; Fastening or mounting the core on casing or support (on coil H01F27/30) · CPC title

• H01F2017/0093

  Common mode choke coil · CPC title