EP4390988A1

EP4390988A1 - Electromagnetic steel plate for reactor, and reactor

Info

Publication number: EP4390988A1
Application number: EP22875362.0A
Authority: EP
Inventors: Takeshi Sato; Junichi Takada; Kenji Shimizu; Kiyotaka Sumito; Takuma KONDO; Naoki Tanaka
Original assignee: Mitsubishi Heavy Industries Thermal Systems Ltd
Current assignee: Mitsubishi Heavy Industries Thermal Systems Ltd
Priority date: 2021-09-29
Filing date: 2022-02-14
Publication date: 2024-06-26
Also published as: JP2023050197A; JP2023049412A; JP7470668B2; WO2023053478A1

Abstract

This electromagnetic steel plate for a reactor comprises: a central component including a plate-like first portion extending in a first direction, and six second portions provided integrally with the first portion and comprising three on either side in a second direction orthogonal to the first direction, the second portions protruding from the first portion and having a plate-like shape extending in the same plane as the first portion; and an outer component having an area such that, in a state in which a pair of the central components are combined such that the respective three second portions are opposed to each other, a gap between the second portions adjacent to each other can be filled, the outer component having a plate-like shape extending in the same plane as the first portion.

Description

Technical Field

The present disclosure relates to an electromagnetic steel plate for a reactor and a reactor.
Priority is claimed on Japanese Patent Application No. 2021-159130 filed on September 29, 2021 , the content of which is incorporated herein by reference.

Background Art

Reactors are widely used as electrical components for causing reactance. A reactor includes a core formed by laminating a plurality of electromagnetic steel plates and a coil composed of a wire wound around the core.
In the related art, generally, a component having a predetermined shape is obtained by performing die-cutting at the time of manufacture of a core. One core is formed by laminating a plurality of such components and then welding the components to each other (for example, PTL 1 below or PTL 2 below).

Citation List

Patent Literature

[PTL 1] Japanese Unexamined Patent Application Publication No. 2013-93921
[PTL 2]: Chinese Utility Model Registration Application No. 206194495

Summary of Invention

Technical Problem

However, in the case of the configuration of the core in the related art, a wasteful portion is likely to be formed in a case where die-cutting out of an electromagnetic steel plate is performed and thus improvement in yield is desired.
The present disclosure has been made in order to solve the above-described problem and an object thereof is to provide an electromagnetic steel plate for a reactor and a reactor with which it is possible to achieve improvement in yield.

Solution to Problem

In order to solve the above-described problem, the present disclosure provides an electromagnetic steel plate for a reactor, the plate including: a central component including a first portion that extends in a first direction and that has a plate-like shape and six second portions that are provided integrally with the first portion, that are provided such that at least three second portions are provided on each of both sides in a second direction orthogonal to the first direction, that protrude from the first portion, and each of which has a plate-like shape extending in the same plane as the first portion; and an outer component that has an area sufficient to fill a gap between the second portions adjacent to each other in a state where a pair of the central components is combined with each other such that the at least three second portions face each other and that has a plate-like shape extending in the same plane as the first portion.
The present disclosure provides an electromagnetic steel plate for a reactor, the plate including: a central component including a first portion that extends in a first direction and that has a plate-like shape and six second portions that are provided integrally with the first portion, that are provided such that at least three second portions are provided on each of both sides in a second direction orthogonal to the first direction, that protrude from the first portion, and each of which has a plate-like shape extending in the same plane as the first portion; and two outer components each including at least three third portions each of which has a plate-like shape extending in the second direction and that are provided at the same positions as the at least three second portions in the first direction and a fourth portion that connects the at least three third portions to each other in the first direction.
The present disclosure provides an electromagnetic steel plate for a reactor, the plate including: two outer components each including a first portion that extends in a first direction and that has a plate-like shape and at least three second portions that are provided integrally with the first portion, that protrude toward one side in a second direction orthogonal to the first direction, and each of which has a plate-like shape extending in the same plane as the first portion; and a central component including a third portion that has a plate-like shape extending in the first direction and that connects end portions of the at least three second portions to each other. The second portion that is part of the at least three second portions and that is positioned closest to one side in the first direction is formed to be smaller, by a predetermined length, than the other second portions in dimension in the second direction, and the central component further includes a pair of protrusion portions that protrude by the predetermined length in directions away from each other in the second direction from both end portions of the third portion.

Advantageous Effects of Invention

According to the present disclosure, it is possible to provide an electromagnetic steel plate for a reactor and a reactor with which it is possible to achieve improvement in yield.

Brief Description of Drawings

Fig. 1 is a cross-sectional view showing a configuration of a reactor according to a first embodiment of the present disclosure.
Fig. 2 is an explanatory view showing a shape at the time of die-cutting of an electromagnetic steel plate for a reactor according to the first embodiment of the present disclosure.
Fig. 3 is a cross-sectional view showing a configuration of a reactor according to a second embodiment of the present disclosure.
Fig. 4 is an explanatory view showing a shape at the time of die-cutting of an electromagnetic steel plate for a reactor according to the second embodiment of the present disclosure.
Fig. 5 is a cross-sectional view showing a configuration of a reactor according to a third embodiment of the present disclosure.
Fig. 6 is an explanatory view showing a shape at the time of die-cutting of an electromagnetic steel plate for a reactor according to the third embodiment of the present disclosure.
Fig. 7 is an explanatory view showing a shape at the time of die-cutting of another component of the electromagnetic steel plate for a reactor according to the third embodiment of the present disclosure.
Fig. 8 is an explanatory view showing the shape at the time of die-cutting of the electromagnetic steel plate for a reactor according to the third embodiment of the present disclosure and is a view showing a modification example.
Fig. 9 is an explanatory view showing the shape at the time of die-cutting of the electromagnetic steel plate for a reactor according to the third embodiment of the present disclosure and is a view showing another modification example.

Description of Embodiments

[First Embodiment]

(Configuration of Reactor)

Hereinafter, a reactor 100 and an electromagnetic steel plate 90 for a reactor according to a first embodiment of the present disclosure will be described with reference to Figs. 1 and 2.
The reactor 100 is a component used to cause reactance on an electric circuit. As shown in Fig. 1, the reactor 100 includes a core 1 and two coils (a first coil 51 and a second coil 52).

(Configuration of Core)

The core 1 is formed by laminating a plurality of plate-shaped electromagnetic steel plates 90 for a reactor in a thickness direction. The electromagnetic steel plate 90 for a reactor includes a central component 1a and a pair of outer components 1b.
The central component 1a includes a first portion 11 that extends in a first direction D1 and a plurality of (six) second portions 12 that extend in a second direction D2 orthogonal to the first direction D1. Three second portions 12 are provided at each of edges on both sides of the first portion 11 in the second direction. The second portions 12 are formed integrally with the first portion 11 and have plate-like shapes extending in the same plane as the first portion 11. In addition, the second portions 12 are separated from each other in the first direction D1 by the same dimension. Note that being "the same" means being substantially the same, and manufacturing tolerances and design errors are allowed. The same applies to the following description.
Four second portions 12 that are positioned on both sides in the first direction D1 are respectively provided at both end portions of the first portion 11 in the first direction D1. That is, the first portion 11 does not protrude to both sides in the first direction D1.
Note that a pair of second portions 12, which is part of the six second portions 12 and is positioned at the center in the first direction D1, may be smaller than the remaining second portions 12 in dimension in the second direction D2. This is because an air gap is to be formed between the pair of second portions 12 and the outer components 1b, which will be described later.
The outer component 1b connects three second portions 12 of the central component 1a to each other in the first direction D1. In other words, the outer component 1b extends in the first direction over the three second portions 12.

(Configuration of Coil)

Each of the first coil 51 and the second coil 52 is formed by winding, a plurality of times, a wire around the second portion 12 that is at the center in the first direction D1. That is, the reactor 100 includes two independent coils. As a method of winding the wire, it is possible to adopt various methods proposed so far.
In a case where the reactor 100 is to be formed, the first coil 51 and the second coil 52 are formed by winding a wire after a plurality of the central components 1a and the outer components 1b, which are formed in shapes as described above through die-cutting, are laminated in the thickness direction. Thereafter, a laminate of the central components 1a and a laminate of the outer components 1b are welded to each other so that the reactor 100 is completed.

(About Die-Cut Shape of Electromagnetic Steel Plate for Reactor)

Next, a die-cut shape of the electromagnetic steel plate 90 for a reactor will be described with reference to Fig. 2. A die (a blade) used in a case where of producing the electromagnetic steel plate 90 for a reactor through die-cutting has a shape as shown in Fig. 2. That is, the outer components 1b are in a state of being disposed in a region between the second portions 12 in a state where the second portions 12 of the central components 1a are arranged in a state of facing each other. Therefore, a dimension of the outer component 1b in the first direction D1 is two times a dimension of the second portion 12 in the second direction D2. That is, the outer component 1b is disposed to cover the area of a region surrounded by four second portions 12 of a pair of the central components 1a disposed to face each other. In addition, accordingly, a dimension (a width dimension) of the outer component 1b in the second direction D2 is the same as a distance by which the second portions 12 are separated from each other in the first direction D1.

(Action and Effect)

In the related art, generally, a component having a predetermined shape is obtained by performing die-cutting at the time of manufacture of the core 1. One core is formed by laminating a plurality of such components and then welding the components to each other. However, in the case of the configuration of the core in the related art, a wasteful portion is likely to be formed in a case where die-cutting out of an electromagnetic steel plate is performed and thus improvement in yield is desired.
According to the above-described configuration, it is possible to improve the yield of a plate material which is a material used in a case where the central component 1a and the outer components 1b are formed through die-cutting. That is, a wasteful portion can be reduced. Specifically, die-cutting can be performed in a state where the outer component 1b is disposed between the second portions 12 adjacent to each other in a state where a pair of the central components 1a is combined with each other such that the second portions 12 thereof face each other. Accordingly, improvement in yield can be achieved.
In addition, according to the above-described configuration, a dimension of the outer component 1b in the second direction D2 is two times the length of protrusion of the second portions 12. Therefore, a region formed between the second portions 12 can be used as the outer component 1b with little waste.
Furthermore, according to the above-described configuration, since a dimension of the outer component 1b in the first direction D1 is equal to a dimension by which the second portions 12 are separated from each other, the region formed between the second portions 12 can be used as the outer component 1b with less waste. Accordingly, great improvement in yield can be achieved in a case of obtaining the electromagnetic steel plate 90 for a reactor from one steel plate.
In addition, in addition to the above-described action and effect, in the reactor 100, vibration caused by excitation can be canceled out between the two coils since axial directions of the two coils are the same as each other. Particularly, in a case where the reactor 100 is operated in an interleaving manner, the phases of currents of the two coils are made different from each other. A vibration reduction effect as described above can be achieved since basic components out of the basic components and carrier components included in the currents cancel each other. Generally, a long side (that is, the outer component 1b side) of a reactor formed by using an electromagnetic steel plate is fixed to a housing by a screw or the like. However, in the case of the reactor 100 according to the present embodiment, vibration transmitted to a housing can be reduced since vibration parallel to a long side of the reactor 100 occurs.
Furthermore, in the reactor 100, each coil is accommodated inside the core 1. In other words, the size of the core 1 can be increased in comparison with a case where coils having the same size as each other are disposed to be exposed to the outside of the core 1. As a result, the length of the entire magnetic path is increased and a coupling coefficient can be suppressed to be small. Accordingly, the performance of the reactor 100 can be further improved.
The first embodiment of the present disclosure has been described above. Note that the above-described configurations can be changed and modified in various ways without departing from the gist of the present disclosure. For example, in the above-described first embodiment, an example, in which three second portions 12 are formed at each side of the central component 1a so that a total of two coils are formed, has been described. However, the number of coils can be changed to four or more depending on the design and specifications.

[Second Embodiment]

Next, a second embodiment of the present disclosure will be described with reference to Figs. 3 and 4. The same configurations as those of the first embodiment will be assigned with the same reference signs, and detailed description thereof will be omitted. As shown in Fig. 3, a reactor 200 according to the present embodiment includes a core 2 and two coils (the first coil 51 and the second coil 52).

(Configuration of Core)

As with the above-described embodiment, the core 2 is formed by laminating a plurality of plate-shaped electromagnetic steel plates 90b for a reactor in the thickness direction. The electromagnetic steel plate 90b for a reactor includes a central component 2a and a pair of outer components 2b.
The central component 2a includes a first portion 21 that extends in the first direction D1 and a plurality of (six) second portions 22 that extend in the second direction D2 orthogonal to the first direction D1. Three second portions 22 are provided at each of edges on both sides of the first portion 21 in the second direction D2. In addition, the second portions 22 are separated from each other in the first direction D1 by the same dimension.
Four second portions 22 that are positioned on both sides in the first direction D1 are respectively provided at both end portions of the first portion 21 in the first direction D1. That is, the first portion 21 does not protrude to both sides in the first direction D1.
The outer component 2b includes three third portions 23 that extend to face the three second portions 22 in the second direction D2 and a fourth portion 24 that connects the three third portions 23 to each other in the first direction D1. Accordingly, the outer component 2b has an E-like shape as a whole. One laminate of such outer components 2b is attached to each of both sides in the second direction D2 of a laminate of the central components 2a.
The length of protrusion of the second portions 22 with respect to the first portion 21 and the length of protrusion of the third portions 23 with respect to the fourth portion 24 are equal to each other. In addition, a dimension by which the second portions 22 are separated from each other and a dimension by which the third portions 23 are separated from each other are equal to each other. Furthermore, regarding a dimension by which the second portions 22 are separated from each other, the three second portions 22 are separated from each other by the same dimension. Similarly, regarding a dimension by which the third portions 23 are separated from each other, the three third portions 23 are separated from each other by the same dimension.
Note that a pair of second portions 22, which is part of the six second portions 22 and is positioned at the center in the first direction D1, may be smaller than the remaining second portions 22 in dimension in the second direction D2. Similarly, a pair of third portions 23, which is part of the six third portions 23 and is positioned at the center in the first direction D1, may be smaller than the remaining third portions 23 in dimension in the second direction D2. This is because an air gap is to be formed between the central component 2a and the outer components 2b.

(Configuration of Coil)

Each of the first coil 51 and the second coil 52 is formed by winding, a plurality of times, a wire around the second portion 22 that is at the center in the first direction D1. That is, the reactor 200 includes two independent coils. As a method of winding the wire, it is possible to adopt various methods proposed so far.

(About Die-Cut Shape of Electromagnetic Steel Plate for Reactor)

Next, a die-cut shape of the electromagnetic steel plate 90b for a reactor will be described with reference to Fig. 4. A die (a blade) used in a case of producing the electromagnetic steel plate 90b for a reactor through die-cutting has a shape as shown in Fig. 4. That is, the third portions 23 that are part of the three third portions 23 of the outer component 2b and are on outermost sides are in a state of being fitted into gaps between the second portions 22 of the central components 2a. Die-cutting is performed by continuously repeating such disposition.

(Action and Effect)

According to the above-described configuration, since the third portions 23 of the outer component 2b that are on outermost sides are disposed in a state of being fitted into gaps between the second portions 22 of the central components 2a, a probability that a wasteful portion is formed at the time of die-cutting can be reduced.
In addition, according to the above-described configuration, since a dimension of the third portion 23 in the first direction D1 is equal to a dimension by which the second portions 22 are separated from each other, a region between the second portions 22 of the central component 2a can be used with little waste.
Furthermore, in addition to the above-described action and effect, in the reactor 200, vibration caused by excitation can be canceled out between the two coils since axial directions of the two coils are the same as each other. Particularly, in a case where the reactor 200 is operated in an interleaving manner, the phases of currents of the two coils are made different from each other. A vibration reduction effect as described above can be achieved since basic components out of the basic components and carrier components included in the currents cancel each other. Generally, a long side (that is, the outer component 2b side) of a reactor formed by using an electromagnetic steel plate is fixed to a housing by a screw or the like. However, in the case of the reactor 200 according to the present embodiment, vibration transmitted to a housing can be reduced since vibration parallel to a long side of the reactor 200 occurs.
The second embodiment of the present disclosure has been described above. Note that the above-described configurations can be changed and modified in various ways without departing from the gist of the present disclosure. For example, in the above-described second embodiment, an example, in which three second portions 22 are formed at each side of the central component 2a so that a total of two coils are formed, has been described. However, the number of coils can be changed to four or more depending on the design and specifications.

[Third Embodiment]

Next, a third embodiment of the present disclosure will be described with reference to Figs. 5 to 7. The same components as those in the above-described embodiments will be given the same reference numerals, and detailed description thereof will be omitted. As shown in Fig. 5, a reactor 300 according to the present embodiment includes a core 3 and two coils (the first coil 51 and the second coil 52).

(Configuration of Core)

As with each of the above-described embodiments, the core 3 is formed by laminating a plurality of plate-shaped electromagnetic steel plates 90c for a reactor in the thickness direction. The electromagnetic steel plate 90c for a reactor includes a pair of outer components 3a and a central component 3b.
The outer component 3a includes a first portion 31 that extends in the first direction D1 and three second portions 32 that protrude from a long side of the first portion 31 in the second direction D2. The second portions 32 are separated from each other in the first direction D1 by the same dimension. A dimension in the second direction D2 of the second portion 32 (a small-size second portion 32s) that is one of the three second portions 32 and that is positioned on one side in the first direction D1 is smaller than that of the remaining two second portions 32 by a predetermined length (a unit length in the case of Fig. 5) determined in advance. The unit length mentioned herein means the width of the first portion 31 in the second direction D2. Note that only one second portion 32 that is one of the remaining two second portions 32 and that is positioned at the center in the first direction D1 can be formed to be slightly shorter than the last remaining one second portion 32 so that an air gap is formed. That is, dimensions of the three second portions 32 can be made different from each other in the second direction.
The pair of outer components 3a having such a shape is provided such that the outer components 3a are point-symmetrical with respect to the first direction D1.
The central component 3b includes a third portion 33 that extends in the first direction D1 and that connects end portions of the three second portions 32 to each other and a pair of protrusion portions 34 extending by the unit length (described above) in directions away from each other in the second direction D2 from both end portions in the first direction D1 of the third portion 33.

(Configuration of Coil)

Each of the first coil 51 and the second coil 52 is formed by winding, a plurality of times, a wire around the second portion 32 that is at the center in the first direction D1. That is, the reactor 300 includes two independent coils. As a method of winding the wire, it is possible to adopt various methods proposed so far.

(About Die-Cut Shape of Electromagnetic Steel Plate for Reactor)

Next, a die-cut shape of the electromagnetic steel plate 90c for a reactor will be described with reference to Figs. 6 and 7. A die (a blade) used in a case where of producing the electromagnetic steel plate 90c for a reactor through die-cutting has a shape as shown in Figs. 6 and 7. That is, as shown in Fig. 6, a set of two outer components 3a integrally connected to each other in the second direction D2 is disposed such that the second portions 32 on outermost sides engage with each other. At this time, the length in the second direction D2 of an outer edge of the second portion 32 of one outer component 3a that is on an outermost side and the length of protrusion in the second direction D2 of the second portion 32 of the other outer component 3a that is at the center are equal to each other and thus right and left ends of the set of two outer components 3a are aligned. Regarding a pair of two outer components 3a, the second portion 32 of one outer component 3a that is at the center is continuously coupled to the second portion 32 of the other outer component 3a that is on an outermost side. Die-cutting out of the outer components 3a is performed by continuously repeating such disposition. Note that after or at the same time as the die-cutting, two outer component 3a connected to each other are cut along a dotted line shown in Fig. 6.
As shown in Fig. 7, die-cutting is performed such that sets of the central components 3b are formed such that the protrusion portions 34 thereof face each other and a plurality of sets of the central components 3b are continuously spread in a plane.
According to the above-described configuration, the second portions 32 of the outer components 3a are disposed in a state of engaging with each other. Accordingly, a possibility of formation of a wasteful portion at the time of die-cutting can be further reduced. In addition, since the entire plane can be filled with predetermined shapes without a gap even in a case where the central component 3b is die-cut, improvement in yield can be achieved.
Furthermore, in addition to the above-described action and effect, in the reactor 300, vibration caused by excitation can be canceled out between the two coils since axial directions of the two coils are the same as each other. Particularly, in a case where the reactor 300 is operated in an interleaving manner, the phases of currents of the two coils are made different from each other. A vibration reduction effect as described above can be achieved since basic components out of the basic components and carrier components included in the currents cancel each other. Generally, a long side (that is, the outer component 3a side) of a reactor formed by using an electromagnetic steel plate is fixed to a housing by a screw or the like. However, in the case of the reactor 300 according to the present embodiment, vibration transmitted to a housing can be reduced since vibration parallel to a long side of the reactor 300 occurs.
The third embodiment of the present disclosure has been described above. Note that the above-described configurations can be changed and modified in various ways without departing from the gist of the present disclosure. For example, in the above-described third embodiment, an example, in which three second portions 32 are formed at each side of the outer component 3a so that a total of two coils are formed, has been described. However, the number of coils can be changed to four or more depending on the design and specifications.
Furthermore, as a modification example, it is also possible to remove one of the second portions 32 as shown in Fig. 8. That is, in this case, a dimension of one second portion 32 in the second direction D2 is zero. In a case where the outer component 3a is formed in such a shape, disposition (a disposition method in which the second portions 32 of which the length is zero face each other) of a die (a blade) as shown in Fig. 8 can be adopted at the time of die-cutting and thus further improvement in yield can be achieved.
In addition, as shown in Fig. 9, a dimension of one second portion 32 in the second direction D2 may be further shortened in comparison with the third embodiment. Specifically, in the third embodiment, the one second portion 32 is formed to be shortened by the unit length. However, in an example shown in Fig. 9, the one second portion 32 is formed to be shortened by twice the unit length as the predetermined length. In this case, as shown in Fig. 9, disposition of the die (the blade) becomes more efficient and further improvement in yield can be achieved.

[Appendix]

The electromagnetic steel plate 90 for a reactor and the reactor 100 described in each embodiment are understood as follows, for example.

(1) The electromagnetic steel plate 90 for a reactor according to a first aspect includes the central component 1a including the first portion 11 that extends in the first direction D1 and that has a plate-like shape and at least six second portions 12 that are provided integrally with the first portion 11, that are provided such that at least three second portions 12 are provided on each of both sides in the second direction D2 orthogonal to the first direction D1, that protrude from the first portion 11, and each of which has a plate-like shape extending in the same plane as the first portion 11 and the outer component 1b that has an area sufficient to fill a gap between the second portions 12 adjacent to each other in a state where a pair of the central components 1a is combined with each other such that the at least three second portions 12 face each other and that has a plate-like shape extending in the same plane as the first portion 11.

According to the above-described configuration, it is possible to improve the yield of a plate material which is a material used in a case where the central component 1a and the outer components 1b are formed through die-cutting. That is, a wasteful portion can be reduced. Specifically, die-cutting can be performed in a state where the outer component 1b is disposed between the second portions 12 adjacent to each other in a state where a pair of the central components 1a is combined with each other. Accordingly, improvement in yield can be achieved.
(2) In the electromagnetic steel plate 90 for a reactor according to a second aspect, a dimension of the outer component 1b in the second direction D2 may be two times a length of protrusion of the second portion 12 in the second direction D2.
According to the above-described configuration, a dimension of the outer component 1b in the second direction D2 is two times the length of protrusion of the second portions 12. Therefore, a region formed between the second portions 12 can be used as the outer component 1b with little waste.
(3) In the electromagnetic steel plate 90 for a reactor according to a third aspect, a dimension of the outer component 1b in the first direction D1 may be equal to a dimension by which the second portions 12 are separated from each other in the first direction D1.
According to the above-described configuration, since a dimension of the outer component 1b in the first direction D1 is equal to a dimension by which the second portions 12 are separated from each other, the region formed between the second portions 12 can be used as the outer component 1b with less waste.
(4) The electromagnetic steel plate 90b for a reactor according to a fourth aspect includes the central component 2a including the first portion 21 that extends in the first direction D1 and that has a plate-like shape and at least six second portions 22 that are provided integrally with the first portion 21, that are provided such that at least three second portions 22 are provided on each of both sides in the second direction D2 orthogonal to the first direction D1, that protrude from the first portion 21, and each of which has a plate-like shape extending in the same plane as the first portion 21 and two outer components 2b each including at least three third portions 23 each of which has a plate-like shape extending in the second direction D2 and that are provided at the same positions as the at least three second portions 22 in the first direction D1 and the fourth portion 24 that connects the at least three third portions 23 to each other in the first direction D1.
According to the above-described configuration, since the third portions 23 of the outer component 2b that are on outermost sides are disposed in a state of being fitted into gaps between the second portions 22 of the central components 2a, a probability that a wasteful portion is formed at the time of die-cutting can be reduced.
(5) In the electromagnetic steel plate 90b for a reactor according to a fifth aspect, a dimension of the third portion 23 in the first direction D1 may be equal to a dimension by which the second portions 22 adjacent to each other in the first direction D1 are separated from each other.
According to the above-described configuration, since a dimension of the third portion 23 in the first direction D1 is equal to a dimension by which the second portions 22 are separated from each other, a region between the second portions 22 of the central component 2a can be used with little waste.
(6) The electromagnetic steel plate 90c for a reactor according to a sixth aspect includes two outer components 3a each including a first portion 31 that extends in a first direction D1 and that has a plate-like shape and at least three second portions 32 that are provided integrally with the first portion 31, that protrude toward one side in a second direction D2 orthogonal to the first direction D1, and each of which has a plate-like shape extending in the same plane as the first portion 31 and a central component 3b including a third portion 33 that has a plate-like shape extending in the first direction D1 and that connects end portions of the at least three second portions 32 to each other. A dimension in the second direction D2 of the second portion 32 that is part of the at least three second portions 32 and that is positioned closest to one side in the first direction D1 is smaller than dimensions in the second direction D2 of the other second portions 32 by a predetermined length, and the central component 3b further includes a pair of protrusion portions 34 that protrude by the predetermined length in directions away from each other in the second direction D2 from both end portions of the third portion 33.
According to the above-described configuration, the second portions 32 of the outer components 3a are disposed in a state of engaging with each other. Accordingly, a possibility of formation of a wasteful portion at the time of die-cutting can be further reduced. In addition, improvement in yield at the time of die-cutting of the central component 3b can also be achieved.
(7) In the electromagnetic steel plate 90c for a reactor according to a seventh aspect, the dimension in the second direction D2 of the second portion 32 that is positioned closest to the one side in the first direction D1 may be zero and the protrusion portions 34 may protrude in the directions away from each other in the second direction D2 from both end portions of the third portion 33 by a length corresponding to a dimension in the second direction D2 of the second portion 32 that is positioned closest to the other side in the first direction D1.
According to the above-described configuration, the second portions 32 of which the length is zero are disposed in a state of facing each other and thus a possibility of formation of a wasteful portion at the time of die-cutting can be further reduced.
(8) The reactor 100 according to an eighth aspect includes the core 1 including a plurality of the electromagnetic steel plates 90 for a reactor according to any one of the above-described aspects that are laminated in a thickness direction and a coil (the first coil 51 and the second coil 52) including at least a wire wound around each second portion 12.
According to the above-described configuration, it is possible to provide the low-cost reactor 100 with improvement in yield of the material.

Industrial Applicability

Reference Signs List

100, 200, 300: reactor
90, 90b, 90c: electromagnetic steel plate for reactor
1, 2, 3: core
1a: central component
1b: outer component
11: first portion
12: second portion
2a: central component
2b: outer component
21: first portion
22: second portion
23: third portion
24: fourth portion
3a: outer component
3b: central component
31: first portion
32: second portion
32s: small-size second portion
33: third portion
34: protrusion portion
51: first coil
52: second coil
D1: first direction
D2: second direction

Claims

An electromagnetic steel plate for a reactor, the plate comprising:
a central component including a first portion that extends in a first direction and that has a plate-like shape and at least six second portions that are provided integrally with the first portion, that are provided such that at least three second portions are provided on each of both sides in a second direction orthogonal to the first direction, that protrude from the first portion, and each of which has a plate-like shape extending in the same plane as the first portion; and

an outer component that has an area sufficient to fill a gap between the second portions adjacent to each other in a state where a pair of the central components is combined with each other such that the at least three second portions face each other and that has a plate-like shape extending in the same plane as the first portion.
The electromagnetic steel plate for a reactor according to Claim 1,
wherein a dimension of the outer component in the second direction is two times a length of protrusion of the second portion in the second direction.
The electromagnetic steel plate for a reactor according to Claim 1 or 2,
wherein a dimension of the outer component in the first direction is equal to a dimension by which the second portions are separated from each other in the first direction.
An electromagnetic steel plate for a reactor, the plate comprising:
a central component including a first portion that extends in a first direction and that has a plate-like shape and at least six second portions that are provided integrally with the first portion, that are provided such that at least three second portions are provided on each of both sides in a second direction orthogonal to the first direction, that protrude from the first portion, and each of which has a plate-like shape extending in the same plane as the first portion; and

two outer components each including at least three third portions each of which has a plate-like shape extending in the second direction and that are provided at the same positions as the at least three second portions in the first direction and a fourth portion that connects the at least three third portions to each other in the first direction.
The electromagnetic steel plate for a reactor according to Claim 4,
wherein a dimension of the third portion in the first direction is equal to a dimension by which the second portions adjacent to each other in the first direction are separated from each other.
An electromagnetic steel plate for a reactor, the plate comprising:
two outer components each including a first portion that extends in a first direction and that has a plate-like shape and at least three second portions that are provided integrally with the first portion, that protrude toward one side in a second direction orthogonal to the first direction, and each of which has a plate-like shape extending in the same plane as the first portion; and

a central component including a third portion that has a plate-like shape extending in the first direction and that connects end portions of the at least three second portions to each other,

wherein the second portion that is part of the at least three second portions and that is positioned closest to one side in the first direction is formed to be smaller, by a predetermined length, than the other second portions in dimension in the second direction, and

the central component further includes a pair of protrusion portions that protrude by the predetermined length in directions away from each other in the second direction from both end portions of the third portion.
The electromagnetic steel plate for a reactor according to Claim 6,
wherein the dimension in the second direction of the second portion that is positioned closest to the one side in the first direction is zero, and

the protrusion portions protrude in the directions away from each other in the second direction from both end portions of the third portion by a length corresponding to a dimension in the second direction of the second portion that is positioned closest to the other side in the first direction.
A reactor comprising:
a core including a plurality of the electromagnetic steel plates for a reactor according to any one of Claims 1 to 7 that are laminated in a thickness direction; and

a coil including at least a wire wound around each second portion.