Coil component

Patent metadata

Field	Value
Publication number	US-2020105464-A1
Application number	US-201916575071-A
Country	US
Kind code	A1
Filing date	Sep 18, 2019
Priority date	Sep 28, 2018
Publication date	Apr 2, 2020
Grant date	—

Abstract

A coil component includes a core that includes a core part having a first end portion and a second end portion; and a first wire and a second wire that are wound around the core part from the first end portion to the second end portion in substantially helical shapes so as to have substantially the same number of turns. The first wire is wound so as to form a first layer that contacts the peripheral surface of the core part, the second wire is wound such that at least part of the second wire forms a second layer on the outside of the first layer, and a first coil length formed by the first wire is longer than a second coil length formed by the second wire.

First claim

What is claimed is:

1 . A coil component comprising:
a core including a core part having a first end portion and a second end portion; and a first wire and a second wire that are wound around the core part from the first end portion to the second end portion in substantially helical shapes so as to have substantially identical numbers of turns; wherein the first wire is wound so as to form a first layer that contacts a peripheral surface of the core part, the second wire is wound such that at least part of the second wire forms a second layer on the outside of the first layer, and a first coil length formed by the first wire is longer than a second coil length formed by the second wire.

2 . The coil component according to claim 1 , wherein in the first wire, there is a turn where a gap is formed by leaving a space between that turn and an adjacent turn of the first wire.

3 . The coil component according to claim 1 , wherein in a direction from the first end portion to the second end portion of the core part, there is a part in which the first wire is wound such that a gap is not formed between adjacent turns and a part in which the first wire is wound such that a gap is formed between adjacent turns.

4 . The coil component according to claim 1 , wherein in the first wire, a plurality of parts are provided in which the first wire is wound such that gaps are formed between adjacent turns.

5 . The coil component according to claim 1 , wherein the first wire is wound such that a gap is formed between at least either of two adjacent turns on the first end portion side and two adjacent turns on the second end portion side.

6 . The coil component according to claim 1 , wherein the first wire is wound such that a gap is formed between all adjacent turns.

7 . The coil component according to claim 6 , wherein spaces between the adjacent turns are uniform.

8 . The coil component according to claim 2 , wherein in a direction from the first end portion to the second end portion of the core part, there is a part in which the first wire is wound such that a gap is not formed between adjacent turns and a part in which the first wire is wound such that a gap is formed between adjacent turns.

9 . The coil component according to claim 2 , wherein in the first wire, a plurality of parts are provided in which the first wire is wound such that gaps are formed between adjacent turns.

10 . The coil component according to claim 2 , wherein the first wire is wound such that a gap is formed between at least either of two adjacent turns on the first end portion side and two adjacent turns on the second end portion side.

11 . The coil component according to claim 2 , wherein the first wire is wound such that a gap is formed between all adjacent turns.

12 . The coil component according to claim 11 , wherein spaces between the adjacent turns are uniform.

Assignees

• Murata Manufacturing Co

Inventors

• Kobayashi Kohei
• Moriya Shizuka
• Nakamura Yuki

Classifications

• H01F2017/0093

  Common mode choke coil · CPC title

• H01F17/045

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

• H01F27/29

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

• H01F27/2823 Primary

  Wires (H01F27/2866 takes precedence) · CPC title

• H01F17/06

  with core substantially closed in itself, e.g. toroid · CPC title