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Common mode choke coil and manufacturing method thereof

A technology of common mode choke coil and manufacturing method, which is applied in the direction of inductance/transformer/magnet manufacturing, transformer/inductor coil/winding/connection, inductor, etc., can solve problems such as mode conversion, and achieve suppression mode conversion, The effect of suppressing

Active Publication Date: 2018-11-23
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, in existing common mode choke coils, there is a problem of generating mode conversion

Method used

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  • Common mode choke coil and manufacturing method thereof
  • Common mode choke coil and manufacturing method thereof
  • Common mode choke coil and manufacturing method thereof

Examples

Experimental program
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Embodiment Construction

[0051] (For the structure of the common mode choke coil, refer to figure 1 as well as figure 2 )

[0052]A common mode choke coil 1 according to an embodiment will be described with reference to the drawings. Hereinafter, the direction in which the central axis of the core portion 14 extends is defined as the x-axis direction. In addition, the direction along the long side of the flange portion 16 when viewed from the x-axis direction is defined as the y-axis direction, and the direction along the short side of the flange portion 16 is defined as the z-axis direction. In addition, the x-axis, the y-axis, and the z-axis are orthogonal to each other.

[0053] like figure 1 As shown, the common mode choke coil 1 includes an iron core 12 , winding wires 20 and 21 , and external electrodes 22 to 25 . like figure 2 As shown, the common mode choke coil 1 is roughly divided into a starting wire side region α (first region) serving as a starting winding end of the winding wir...

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Abstract

An object of the present invention is to provide a common mode choke coil capable of suppressing occurrence of mode conversion, and a method of manufacturing the same. Common mode choke coil 1 includes an iron core having winding core portion 14 , winding wire 20 , and winding wire 21 . The start-side area α extends from one end A of the winding wire 20 in contact with the winding core 14 to a position B, and the end-side area β extends from the other end C of the winding wire 21 in contact with the winding core 14 to a position D. The winding wire 20 is located on the negative side of the x-axis direction relative to the winding wire 21 of the same winding number in the starting wire side area α, and is wound around the winding core 14 so as to sandwich the winding wire 21 in the ending wire side area β. The wire 21 is located on the positive side in the x-axis direction with respect to the winding wire 21 having the same turn number in the end-side area β, and is wound around the winding core 14 so as to sandwich the winding wire 20 in the starting-side area α. The number of windings of the winding wires 20 and 21 and the number of windings of the winding wires 20 and 21 so as to be in contact with the winding core portion 14 are the same.

Description

technical field [0001] The present invention relates to a common mode choke coil and a manufacturing method thereof. Background technique [0002] As a conventional common mode choke coil, the common mode choke coil described in Patent Document 1 is known. In such a common mode choke coil (hereinafter referred to as a conventional common mode choke coil), such as Figure 23 As shown, two conducting wires are wound in parallel on a core portion extending in the x-axis direction. In addition, the conventional common mode choke coil has a first region in which the other lead wire is wound around the core portion so as to sandwich the other lead wire, and the one lead wire is wound so as to sandwich the other lead wire. It is wound around the second area of ​​the core portion. This is to prevent a part of the differential mode signal from passing through the common mode choke coil by making the number of turns of the conductors in the first region and the second region the sam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F17/04H01F27/28H01F41/066
CPCH01F17/045H01F27/006H01F2017/0093H01F41/073H01F41/069H01F27/2823H01F27/29
Inventor 山北高之
Owner MURATA MFG CO LTD
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