Coil component

Patent metadata

Field	Value
Publication number	US-11232898-B2
Application number	US-201816228643-A
Country	US
Kind code	B2
Filing date	Dec 20, 2018
Priority date	Oct 5, 2015
Publication date	Jan 25, 2022
Grant date	Jan 25, 2022

Abstract

A 0.5-displacement region in which a first wire and a second wire are displaced by 0.5 turns from each other, and a 1.5-displacement region in which the first wire and the second wire are displaced by 1.5 turns in an opposite direction to a 0.5-displacement region are distributed along an axis direction on a winding core portion. The sum of the number of turns of the second wire located in the 0.5-displacement region being twice or more and five times or less than the sum of the number of turns of the second wire located in the 1.5-displacement region.

First claim

The invention claimed is:

1. A coil component comprising:
a core including a winding core portion which has a first end portion and a second end portion opposite to the first end portion; and
a first wire and a second wire helically wound around the winding core portion with substantially a same number of turns as each other, the first wire is wound in a state of constituting a first layer being in contact with a circumferential surface of the winding core portion, and the second wire is wound in a state of mostly constituting a second layer on an outside of the first layer and a part of the second wire in the second layer is fitted into a recess portion formed between adjacent turns of the first wire,
wherein the second wire is wound in a state where a gap is formed with respect to the adjacent turns in a shift region, and
wherein the shift region is between a first region having a first displacement between the first wire and the second wire and a second region having a second displacement different from the first displacement between the first wire and the second wire.

2. The coil component according to claim 1 ,
wherein when a number of turns of each of the first wire and the second wire counted from the first end portion side is expressed by n, and n being a natural number,
an (n+1)-th turn of the first wire is wound in a state where a gap is formed with respect to the n-th turn of the first wire in the shift region,
an n-th turn of the second wire is wound in a state where a gap is formed with respect to the (n−1)-th turn of the second wire in the shift region, and
an (n+1)-th turn of the second wire is wound in a state where a gap is formed with respect to the n-th turn of the second wire in the shift region.

3. The coil component according to claim 2 ,
wherein the n-th turn and (n+1)-th turn of the second wire is wound in a state of being in contact with the circumferential surface of the winding core portion.

4. The coil component according to claim 1 ,
wherein when a number of turns of each of the first wire and the second wire counted from the first end portion side is expressed by n, and n being a natural number,
an n-th turn of the second wire is wound in a state where a gap is formed with respect to the n-th turn of the first wire in the shift region.

5. The coil component according to claim 1 ,
wherein the second wire intersects with the first wire at two points in the shift region.

6. The coil component according to claim 1 ,
wherein the shift region is a region for shifting between a 0.5-displacement region in which the first wire and the second wire are displaced by 0.5 turns from each other and a 1.5-displacement region in which the first wire and the second wire are displaced by 1.5 turns from each other.

7. A coil component comprising:
a core including a winding core portion which has a first end portion and a second end portion opposite to the first end portion; and
a first wire and a second wire helically wound around the winding core portion with substantially a same number of turns as each other, the first wire is wound in a state of constituting a first layer being in contact with a circumferential surface of the winding core portion, and the second wire is wound in a state of mostly constituting a second layer on an outside of the first layer and a part of the second wire in the second layer is fitted into a recess portion formed between adjacent turns of the first wire,
wherein the first wire is wound in a state where a gap is not formed between adjacent turns thereof and the second wire is wound in a state where a gap is formed between adjacent turns thereof in a shift region, and
wherein the shift region is between a first region having a first displacement between the first wire and the second wire and a second region having a second displacement different from the first displacement between the first wire and the second wire.

8. The coil component according to claim 7 ,
wherein the second wire intersects with the first wire at two points in the shift region.

9. The coil component according to claim 7 ,
wherein the shift region is a region for shifting between a 0.5-displacement region in which the first wire and the second wire are displaced by 0.5 turns from each other and a 1.5-displacement region in which the first wire and the second wire are displaced by 1.5 turns from each other.

10. A coil component comprising:
a core including a winding core portion which has a first end portion and a second end portion opposite to the first end portion; and
a first wire and a second wire helically wound around the winding core portion with substantially a same number of turns as each other, the first wire is wound in a state of constituting a first layer being in contact with a circumferential surface of the winding core portion, and the second wire is wound in a state of mostly constituting a second layer on an outside of the first layer and a part of the second wire in the second layer is fitted into a recess portion formed between adjacent turns of the first wire,
wherein the second wire is wound in a state where a gap is formed with respect to the adjacent turns in a first shift region,
wherein the first wire is wound in a state where a gap is not formed between adjacent turns thereof and the second wire is wound in a state where a gap is formed between adjacent turns thereof in a second shift region, and
wherein the first shift region is between a first region having a first displacement between the first wire and the second wire and a second region having a second displacement different from the first displacement between the first wire and the second wire.

11. The coil component according to claim 10 ,
wherein when a number of turns of each of the first wire and the second wire counted from the first end portion side is expressed by n, and n being a natural number,
an (n+1)-th turn of the first wire is wound in a state where a gap is formed with respect to the n-th turn of the first wire in the first shift region,
an n-th turn of the second wire is wound in a state where a gap is formed with respect to the (n−1)-th turn of the second wire in the first shift region, and
an (n+1)-th turn of the second wire is wound in a state where a gap is formed with respect to the n-th turn of the second wire in the first shift region.

12. The coil component according to claim 11 ,
wherein the n-th turn and (n+1)-th turn of the second wire is wound in a state of being in contact with the circumferential surface of the winding core portion.

13. The coil component according to claim 10 ,
wherein when a number of turns of each of the first wire and the second wire counted from the first end portion side is expressed by n, and n being a natural number,
an n-th turn of the second wire is wound in a state where a gap is formed with respect to the n-th turn of the first wire in the first shift region.

14. The coil component according to claim 10 ,
wherein the second wire intersects with the first wire at two points in each of the first shift region and the second shift region.

15. The coil component according to claim 10 ,
wherein each of the first shift region and the second shift region is a region for shifting between a 0.5-displacement region in which the first wire and the second wire are displaced by 0.5 turns from each other and a 1.5-displacement region in which the first wire and the second wire are displaced by 1.5 turns from each other.

Assignees

• Murata Manufacturing Co

Inventors

• Miyamoto Masashi
• Yamamoto Shigeto
• Yamaguchi Kentaro

Classifications

• H01F17/045 Primary

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

• H01F27/006

  with special arrangement or spacing of turns of the winding(s), e.g. to produce desired self-resonance · CPC title

• H01F27/2823

  Wires (H01F27/2866 takes precedence) · CPC title

• H01F27/24

  Magnetic cores · CPC title

• H01F27/34 Primary

  Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields · CPC title