common mode choke

Abstract

Provided is a common mode choke coil that can reduce the number of parts. In the common mode choke coil, two bus bars are connected, and are arranged so that one bus bar is routed around one side of a magnetic core, and the other bus bar is routed around two bus bars that are adjacent to the one side and extend in a direction that is orthogonal to the one side. The two bus bars are assembled so that the other bus bar overlaps the one bus bar closer than the one bus bar.

Description

Technical Field

[0001] This invention relates to a common-mode choke. Background Technology

[0002] Patent document 1 discloses the following structure: relative to the top and bottom sides of the magnetic core, the busbars are arranged in an S-shaped detour around the four sides of the cross-section of the magnetic core to suppress the enlargement of the magnetic core.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2021-118476 Summary of the Invention

[0004] However, in the aforementioned Patent Document 1, when the busbars are arranged in a manner that surrounds the four sides of the magnetic core, because the busbars are arranged in a manner that surrounds the magnetic core, they cannot be assembled unless they are divided into three or more parts, resulting in an increase in the number of parts.

[0005] The present invention was made in view of the above, and its object is to provide a common mode choke that can reduce the number of parts.

[0006] In the common-mode choke of the present invention, two busbars are connected and configured such that one busbar meanders around one side of the magnetic core and the other busbar meanders around the side adjacent to the first side and extending in a direction perpendicular to it. The two busbars are overlapped and assembled in such a way that the other busbar is closer to the end of the first busbar than the first busbar and is different from the end of the connection portion.

[0007] Invention Effects

[0008] According to the present invention, the number of parts can be reduced. Attached Figure Description

[0009] Figure 1 This is a perspective view showing a schematic structure of a common-mode choke according to an embodiment of the present invention.

[0010] Figure 2 From Figure 1 Arrow A shows the top view.

[0011] Figure 3 From Figure 1 Arrow B shows the side view.

[0012] Figure 4 yes Figure 1 CC-line sectional view.

[0013] Figure 5 yes Figure 2 DD-line sectional view.

[0014] Figure 6 It is a schematic representation Figure 2 The diagram shows the effect of the DD line section view. Detailed Implementation

[0015] Hereinafter, a common-mode choke according to an embodiment of the present invention will be described with reference to the accompanying drawings. Furthermore, the constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art, or substantially the same constituent elements.

[0016] [Structure of common mode choke]

[0017] Figure 1 This is a perspective view showing a schematic structure of a common-mode choke according to an embodiment of the present invention. Figure 2 From Figure 1 Arrow A shows the top view. Figure 3 From Figure 1 Arrow B shows the side view. Figure 4 yes Figure 1 CC-line sectional view. Figure 5 yes Figure 2 DD-line sectional view. Additionally, in Figures 1-5 In this example, the horizontal direction is defined as the X direction, the direction orthogonal to the X direction on the same plane is defined as the Y direction, and the direction orthogonal to both the X and Y directions is defined as the Z direction.

[0018] Figures 1-5 The common-mode choke 1 shown has a magnetic core 100 and four busbars 200, 300, 400, and 500. Furthermore, busbars 200 and 300 are paired together, and busbars 400 and 500 are also paired together. That is, the common-mode choke 1 has two sets of busbars.

[0019] The magnetic core 100 has a through hole 600 and is cubic in shape. Two busbars 200 and 400 are arranged through this through hole 600. In one embodiment, an example with busbars 200 and 400 is shown, but the embodiment is not limited to this example; for example, there may be more than one busbar. Furthermore, the magnetic core 100 may be cuboid in shape, a cube with R-shaped markings at its four corners, or other shapes.

[0020] The busbar 200 is arranged in a circuitous manner on the upper edge 101, which is one side of the magnetic core 100, and passes through the through hole 600 of the magnetic core 100. The busbar 200 has three outer surface portions 201, 202, and 203 and a through portion 204. The three outer surface portions 201, 202, and 203 are arranged along the upper edge 101 of the three outer surfaces of the magnetic core 100. The through portion 204 is disposed in the through hole 600 of the magnetic core 100. That is, the busbar 200 is arranged on the magnetic core 100 by longitudinal winding.

[0021] The busbar 300 is configured to be adjacent to the upper edge 101, which is one side of the magnetic core 100, and to meander around the right side 102, which is the side extending in a direction perpendicular to it. The busbar 300 has three outer surface portions 301, 302, and 303. The busbar 300 has a connecting portion 700 that is joined by welding or the like to one end 301a of the outer surface portion 301 of the busbar 200 to the end 204a of the through portion 204 of the busbar 200. Moreover, the busbar 300 is assembled on top of the busbar 200 with its end 201a closer to the end of the busbar 200 than the end 201a of the busbar 200. Specifically, the busbar 300 is assembled on top of the busbar 200 with its end 201a closer to the end of the busbar 200 than the end 201a of the busbar 200 and different from the end 201a on the connecting portion 700 side, thereby forming the connecting portion 700. That is, the busbar 300 is configured to be wound on the magnetic core 100.

[0022] The busbar 400 is arranged in a circuitous manner on the lower edge 103 of one side of the magnetic core 100 and passes through the through hole 600 of the magnetic core 100. The busbar 400 has three outer surface portions 401, 402, and 403 and a through portion 404. The three outer surface portions 401, 402, and 403 are arranged along the right side 102 of the outer surface of the magnetic core 100. The through portion 404 is disposed in the through hole 600 of the magnetic core 100. That is, the busbar 400 is arranged on the magnetic core 100 by longitudinal winding.

[0023] The busbar 500 is configured to be adjacent to the lower edge 103, which is one side of the magnetic core 100, and to meander around the left side 104, which is the side extending in a direction perpendicular to it. Furthermore, the busbar 500 has three outer surface portions 501, 502, and 503. The busbar 500 has a connecting portion 800 that is joined by welding or the like to one end 501a of the outer surface portion 501 of the busbar 400 to the end 404a of the through portion 404 of the busbar 400. Moreover, the busbar 500 is overlapped and assembled with the busbar 400 at an end 401a closer to the end of the busbar 400 than the end 401a of the busbar 400. Specifically, the busbar 500 is overlapped and assembled with the busbar 400 at an end 401a closer to the end of the busbar 400 than the end 401a of the busbar 400 and at an end 401a different from the connecting portion 800 side, thereby forming the connecting portion 800. That is, the busbar 500 is configured by transverse winding on the magnetic core 100.

[0024] like Figure 5 and Figure 6 As shown, when the common-mode choke 1 constructed in this way winds the busbars 200, 300, 400, and 500 around the magnetic core 100, the magnetic circuit length L1 can be reduced (see reference) by winding within a narrow projected area. Figure 5 And thus improve efficiency. Moreover, such as... Figure 6As shown, the common-mode choke 1, by setting a magnetic field on one surface, can suppress heat generation, thereby achieving further miniaturization of the magnetic core 100. Furthermore, by making the common-mode choke 1 nearly square, the magnetic circuit length L1 of the magnetic core can be shortened (see reference). Figure 5 This is done in the same way as arranging the same two conventional busbars side by side within the through hole 600 of the magnetic core 100.

[0025] According to one embodiment described above, in the connection portion 700 of two busbars 200 and 300, which are configured such that one busbar 200 meanders around one side of the magnetic core 100 and the other busbar 300 meanders around the side that is adjacent to one side and extends in a direction perpendicular to it, the two busbars are overlapped and assembled in such a way that the other busbar 300 is closer to the first busbar 200, thus reducing the number of parts.

[0026] Furthermore, according to one embodiment, when the common-mode choke 1 is wound around the busbars 200, 300, 400, and 500 of the magnetic core 100, the magnetic circuit length L1 can be reduced (see reference) by winding it within a narrow projected area. Figure 5 This improves efficiency.

[0027] Further effects or variations can be readily derived by those skilled in the art. The invention is not limited to the specific details and representative embodiments shown and described above. Therefore, various modifications can be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.

[0028] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, these are merely illustrative examples. Those skilled in the art can implement the present invention in other ways by making various modifications and improvements, starting with the manner described in the disclosure section of this invention.

[0029] Symbol Explanation

[0030] 1-Common mode choke, 100-Magnetic core, 200, 300, 400, 500-Busline, 600-Through hole, 700, 800-Connecting part.

Claims

1. A common-mode choke, characterized in that, In the connection between two busbars, configured such that one busbar meanders around one side of the magnetic core, and the other busbar meanders around an edge adjacent to said one side and extending in a direction perpendicular to it, The two busbars are assembled in such a way that the other busbar is closer to the end of the first busbar than the first busbar and is different from the end of the connecting part.

2. The common-mode choke according to claim 1, characterized in that, The two busbars have two sets. One of the busbars in the group is configured to meander around the top of the magnetic core and pass through the through-hole of the magnetic core. The other bus in the group is configured to meander to the right of the magnetic core. In another group, one of the busbars is configured to meander beneath the magnetic core and penetrate through the core's through-hole. The other bus in the other group is configured to meander to the left of the magnetic core.

3. The common-mode choke according to claim 1, characterized in that, The magnetic core is cubic in shape.

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