JP2019009262A - Reactor and composite reactor - Google Patents

Abstract

A reactor and a composite reactor that can be downsized are provided. A flat reactor includes a reactor body (10) having a core (11) and a coil (12) and a resin case (20) that houses the reactor body (10). The resin case 20 has an accommodating portion 21 that accommodates the reactor body 10 therein, and a protruding portion 22 that protrudes outward from the accommodating portion 21 . The projecting portion 22 is provided with a fixing portion 221 that further projects from the projecting portion 22 and fixes the reactor 1 to an installation target, and a recessed portion 222 in which the fixing portion 221 of another reactor 1 is fitted. there is [Selection drawing] Fig. 2

Description

  The present invention relates to a reactor and a composite reactor using the reactor.

  The reactor is used in various electric devices, and includes a reactor main body having a core and a coil wound around the core, and a case for housing the reactor main body. The case is provided with a fixing portion that is fixed to the installation target of the reactor by screw fastening or the like. The coil is electrically connected to an external device using lead wiring.

JP 2011-071485 A

  Conventional reactors have a vertical structure in consideration of ease of assembly, such as viewing from the top or assembling sequentially from the bottom. That is, the lead wire housed in the case so that the longitudinal direction of the reactor body is perpendicular to the installation target and electrically connected to the coil end portion by welding or the like is also drawn out in that direction. It was. Therefore, when there is no space in the height direction with respect to the installation target, it is difficult to arrange a conventional reactor.

  Therefore, there is a problem that the installation area increases although it is possible to reduce the height by arranging the reactor body in a face-down configuration and making it flat as a whole without changing the shape of the reactor body. In particular, when a plurality of reactors are installed, each reactor unit is installed by screwing or the like, so that a space for fixing by screwing or the like is individually required, and the problem of increasing the installation area becomes significant. Thus, there is a trade-off relationship between a reduction in height and a reduction in installation area, and it has been difficult to achieve both.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a reactor and a composite reactor that can be reduced in size.

  The reactor according to the present invention is a flat reactor, and includes a reactor main body having a core and a coil, and a resin case that accommodates the reactor main body, and the resin case accommodates the reactor main body therein. A projecting portion projecting outward from the housing portion, the projecting portion further projecting from the projecting portion, and a fixing portion for fixing the reactor to an installation target, and the other reactor And a first recess into which the fixed portion is fitted.

  The composite reactor of the present invention includes a plurality of the reactors, wherein the fixed portion is fitted in the first recess of the other reactor, and the reactors are arranged adjacent to each other.

  Further, the composite reactor of the present invention is arranged with a flat reactor on each side of the regular planar regular polygon in the center, and the reactor includes a reactor main body having a core and a coil, a resin case that houses the reactor main body, A fixing portion that fixes the reactor to an installation target, and the resin case includes an accommodating portion that accommodates the reactor main body and a protruding portion that protrudes outward from the accommodating portion, and the protruding portion The portion is provided with the fixing portion that is further protruded from the protruding portion, and a first recess into which the fixing portion of the other reactor is fitted, and the protruding portion is provided between the reactor main body. It is characterized by being provided in.

  ADVANTAGE OF THE INVENTION According to this invention, the reactor and composite reactor which can be reduced in size can be obtained.

1 is an overall perspective view of a composite reactor according to a first embodiment. It is the whole reactor perspective view concerning a 1st embodiment. It is a disassembled perspective view of the reactor which concerns on 1st Embodiment. It is an upper surface side perspective view of a resin case. It is a bottom side perspective view of a resin case. It is a schematic plan view of the composite reactor which concerns on other embodiment. It is a schematic plan view of the composite reactor which concerns on other embodiment, (a) shows the case where there are three reactors, and (b) shows the case where there are four reactors. It is a schematic plan view of the composite reactor which concerns on other embodiment, (a) shows the case where there are three reactors, (b) shows the case where there are four reactors, and (c) shows the case where there are five reactors.

  Hereinafter, a reactor and a composite reactor according to an embodiment of the present invention will be described with reference to the drawings.

[1. First Embodiment]
[1-1. Constitution]
FIG. 1 is an overall perspective view of the composite reactor according to the first embodiment. FIG. 2 is an overall perspective view of the reactor according to the first embodiment. As shown in FIGS. 1 and 2, the composite reactor of the present embodiment includes a plurality (four in this case) of flat reactors 1 having the same configuration, and one reactor 1 is combined adjacent to another reactor 1. As a result, an annular shape is formed. Here, the annular outer shape is an approximately octagonal shape in plan view, and the composite reactor is generally flat.

  The composite reactor is installed and fixed on an installation target such as a metal case so that the axis of the annular center hole is perpendicular to the installation plane. In the present embodiment, the composite reactor is accommodated in a metal case (not shown), fixed to the case by a fixing portion 221 described later, and filled with a filler in a gap in the case and solidified. Thus, the composite reactor is fixed to the case. As the filler, a resin that is relatively soft and has high thermal conductivity is suitable for ensuring heat dissipation performance of the reactor 1 and reducing vibration propagation from the reactor 1 to the case. Moreover, it is preferable that a filler has insulation.

  FIG. 3 is an exploded perspective view of the reactor 1 according to the first embodiment. As shown in FIG.2 and FIG.3, the reactor 1 is flat as a whole, the reactor main body 10 which has the core 11 and the coil 12, the resin case 20 which accommodates the reactor main body 10, and terminal 30a, 30b. Prepare.

  In this specification, the z-axis direction shown in the drawings is the “upper” side, and the opposite direction is the “lower” side. In describing the configuration of each member, “lower” is also referred to as “bottom” or “back”. “Upper” and “lower” refer to the positional relationship of each component of the reactor, and do not indicate the positional relationship or direction when the reactor 1 is mounted on an actual machine to be installed. The z-axis direction may be referred to as the height direction, and the x and y-axis directions may be referred to as the horizontal direction.

  The core 11 is an annular or columnar magnetic body. As the magnetic body constituting the core 11, a ferrite core, a dust core, a laminated steel plate, a wound iron core, or the like can be used. Here, the core 11 is a dust core and has an annular shape.

  Specifically, the core 11 includes a plurality of core members 11a and 11b. The core member 11a has an I shape and is a middle leg on which the coil 12 is mounted. The cross-sectional shape of the core member 11a in the z-axis direction has a substantially rectangular shape that is substantially the same as the outer shape of the air core portion of the coil 12. The core member 11b has a substantially O-shape, and is provided adjacent to three with a common air core shaft. The core 11 has a core member 11a inserted in the center of the core member 11b, the entire shape is a θ shape, and the θ-shaped core 11 is placed sideways with respect to the installation target surface of a composite reactor such as a metal case. Lay down and placed with the longitudinal direction horizontal. Therefore, the core 11 is flat as a whole.

  The coil 12 is composed of a conductive member. In this embodiment, the coil 12 is formed by winding a copper foil via an insulating material such as insulating paper or insulating film. That is, the coil 12 is formed by interposing an insulating material between copper foils. However, the wire rod and winding method of the coil 12 are not limited to the configuration of the present embodiment, and may be in other forms.

  The coil 12 has a length in the winding axis direction that is shorter than the length in any direction (x-axis direction, y-axis direction) orthogonal to the winding axis direction, and is generally flat. The coil 12 has a winding axis disposed along the z-axis direction, is attached to a core member 11a serving as a middle leg through an insulating member such as an insulating film, and is inserted into the core member 11b. An insulating member 13 such as an insulating film is wound around the coil 12, and the coil 12 and the core member 11b are insulated.

  The ends 12a and 12b of the coil 12 are drawn upward, and are electrically connected to the terminals 30a and 30b via the connecting portion 14 including solder.

  FIG. 4 is a top perspective view of the resin case. FIG. 5 is a bottom perspective view of the resin case. As shown in FIGS. 4 and 5, the resin case 20 is a case made of resin. As the resin, for example, a resin such as an epoxy resin, an unsaturated polyester resin, a urethane resin, BMC (Bulk Molding Compound), PPS (Polyphenylene Sulfide), or PBT (Polybutylene Terephthalate) can be used.

  The resin case 20 includes an accommodating portion 21 that accommodates the reactor main body 10 and a protruding portion 22 that protrudes outward from the accommodating portion 21. In the present embodiment, the accommodating portion 21 has a quadrangular shape in plan view, and the protruding portion 22 has a generally triangular shape in plan view. The protrusions 22 are provided on both sides of the housing part 21 facing each other, and the resin case 20 has a substantially hexagonal shape when viewed in plan.

  The accommodating part 21 covers the periphery of the reactor body 10. In addition, the accommodating portion 21 is provided with openings 21 a to 21 c that communicate with the internal space of the accommodating portion 21. That is, the accommodating portion 21 is provided with an opening 21 a for accommodating the reactor main body 10 and openings 21 b and 21 c for exposing the reactor main body 10 at the side and bottom of the resin case 20.

  Specifically, the opening 21a is provided at a position to be an outer side portion of the annular composite reactor, and has a size that allows the reactor main body 1 to be taken in and out. The opening 21b is provided at a position on the inner side of the composite reactor so as to face the opening 21a. The opening 21b is slightly smaller than the opening 21a and has a size such that the reactor body 1 cannot be taken in and out. The opening 21 c is provided at the bottom of the resin case 20. The reactor body 10 is housed in the housing portion 21 from the opening 21a with the long side perpendicular to the winding axis of the coil 12 being directed toward the center of the annular composite reactor. In this state, the reactor body 10 is opened from the openings 21b and 21c. Is exposed.

  The protruding portion 22 is a portion that fixes the reactor 1 to the installation target and is joined to another reactor 1. In the present embodiment, the protruding portion 22 is provided with protruding portions 22 a and 22 b on both sides of the accommodating portion 21 for a single reactor 1. Further, the protruding portion 22 has a joint portion 220 that is a portion to be joined to another reactor 1. Here, the joint 220 of the protrusions 22a and 22b is joined to the joint 220 of the protrusions 22b and 22a of the other reactors 1. The protruding portion 22a is provided with a fixing portion 221 and the protruding portion 22b is provided with a concave portion 222.

  The fixing part 221 fixes the reactor 1 to an installation target such as a metal case. Here, one fixing portion 221 is provided for each reactor. The fixed part 221 has a cylindrical shape. Here, as for the fixed part 221, the part protruded from the protrusion part 22a has a partial cylindrical shape. The partial cylindrical shape is a shape in which a cross section perpendicular to the z-axis direction forms a part of a circle and extends in the z-axis direction. Here, the fixing portion 221 is provided to extend in the height direction outside the reactor main body 10 or the housing portion 21, and protrudes further outward in the plan view semicircular from the substantially triangular projection portion 22 a in plan view. The part which protruded from the protrusion part 22a of the fixing | fixed part 221 by embodiment is a semi-cylinder shape. The fixing portion 221 is provided with a screw hole 221a, and a fixing member such as a screw is inserted into the screw hole 221a, and the reactor 1 is fixed to the installation target by screw fastening or the like.

  The recess 222 has a partial cylindrical recess that is the same as the outer shape of the fixing portion 221 of the other reactor 1, and the fixing portion 221 of the other reactor 1 is fitted therein. Here, the recess of the recess 222 has a semi-cylindrical shape.

  As described above, the fixing portion 221 is fitted into the recess 222 of the other reactor 1, so that the outer surfaces of the fixing portion 221 and the recess 222 constitute a part of the joint portion 220 to be joined to the other reactor 1. Here, the joint portion 220 is a surface including one side of the projecting portions 22a and 22b having a substantially triangular shape in plan view. When combining the reactors 1, the joint portions 220 of the different reactors 1 may be joined with an adhesive.

  The joint portion 220 is provided with a projection 223 that protrudes outside the reactor body 10 or the housing portion 21 and a recess 224 into which the projection 223 of another reactor 1 is fitted. Specifically, a pair of protrusions 223 and recesses 224 are provided at the joints 220 of the protrusions 22a and the protrusions 22b, respectively. In the protrusion 22 a, the protrusion 223 is provided at the lower end of the joint 220, and the recess 224 is provided at the upper end opposite to the protrusion 223. In the protrusion 22 b, the protrusion 223 is provided at the upper end of the joint 220, and the recess 224 is provided at the lower end opposite to the protrusion 223. Here, the protrusion 223 and the recess 224 extend in the horizontal direction (xy plane).

  Further, the protruding portion 22b is provided with a snap piece 225 to be hooked on the other reactor 1, and the protruding portion 22a is provided with a concave portion 226 on which the snap piece 225 of the other reactor 1 is hooked. The snap piece 225 is a plate-like body whose tip is thicker than the base, is provided to extend outward adjacent to the recess 222, and has elasticity at the thin portion. The recess 226 has a recess into which the snap piece 225 of another reactor 1 is fitted, and is provided around the fixed portion 220. Here, the snap piece 225 and the recessed part 226 are provided in the center part of the height direction so as to be orthogonal to the horizontal direction. The snap piece 225 is fitted into the recess 226 of the other reactor 1 using elasticity.

  Terminal blocks 227 and 228 on which the terminals 30 a and 30 b are installed are provided on the upper surface of the resin case 20, more specifically on the upper surface of the housing portion 21. The terminals 30a and 30b are metal plates that are refracted in two steps in a staircase shape, and are provided with a screw hole 31 connected to an external device at one end. The terminal blocks 227 and 228 include a table 229 on which a flat plate portion having the screw holes 31 of the terminals 30a and 30b is placed, and a grip portion 230 that holds a long plate portion continuing from the flat plate portion. The grip portion 230 has a pair of protrusions having an L-shaped cross section, and the terminals 30a and 30b are fitted between the protrusions. The terminals 30a and 30b are placed on the terminal blocks 227 and 228 so that the terminals 30a and 30b are gripped by the gripping portion 230, and the ends of the terminals 30a and 30b opposite to the screw holes 31 are the ends 12a and 12b of the coil 12. Are electrically connected via a connecting portion 14 including solder.

  Each part 221 to 230 is a resin that constitutes the resin case 20 and is formed continuously with the resin of the resin case 20. That is, the resin case 20 and the portions 221 to 230 can be integrally formed by injection molding.

[1-2. Action / Effect]
(1) The reactor 1 of this embodiment is a flat reactor, Comprising: The reactor main body 10 which has the core 11 and the coil 12, and the resin case 20 which accommodates the reactor main body 10 were provided. The resin case 20 includes an accommodating portion 21 that accommodates the reactor main body 10 and a protruding portion 22 that protrudes outward from the accommodating portion 21. And it is provided so that it may protrude further from the protrusion part 22, and the fixing | fixed part 221 which fixes the reactor 1 to installation object may be provided in the protrusion part 22, and the recessed part 222 in which the fixing | fixed part 221 of the other reactor 1 is fitted. did.

  Thereby, the composite reactor formed by arranging a plurality of the reactors 1 adjacent to each other can be reduced in size.

  That is, since the reactor 1 of this embodiment has a flat overall shape, the composite reactor can be reduced in height. On the other hand, the projecting portions 22a and 22b are provided, and the projecting portions 22a and 22b are provided with the fixing portion 221 and the recessed portion 222 so that the space is shared between the fixing of the reactor 1 to the installation target and the coupling with the other reactor 1. Therefore, the installation area in the horizontal direction can be reduced.

  That is, the conventional reactor has a fixed structure on the outside of the reactor main body. For example, when two reactors are arranged adjacent to each other, the two fixed structures are adjacent between the reactors. However, in this embodiment, by adopting a configuration in which the fixed portion 221 and the concave portion 222 are fitted together, it is possible to save space and to provide a structure that is connected to another reactor 1 separately. In addition, the connection with other reactors 1 can be strengthened.

  In addition, since a composite reactor can be configured by combining a plurality of reactors 1 according to the present embodiment, it is not necessary to prepare a large and complicated mold for producing the composite reactor, and the mold structure can be simplified. Manufacturing cost can be reduced.

  Thus, according to this reactor 1, the fixing | fixed part 221 is engage | inserted by the recessed part 222 of the other reactor 1, and it can comprise the composite reactor by which reactors 1 mutually adjoin, and the fixing | fixed part 221 is comprised. However, the composite reactor whose whole shape comprises a cyclic | annular shape can be obtained by being engage | inserted by the recessed part 222 of the other reactor 1. FIG.

(2) The protrusion 22 is provided with a protrusion 223 that further protrudes from the protrusion 22 and a recess 224 into which the protrusion 223 of another reactor 1 is fitted. Thereby, the connection relationship between reactors 1 can be strengthened. Here, since the protrusion 223 and the recess 224 extend in the horizontal direction, the reactors 1 can be prevented from shifting in the height direction, and the coupling relationship in the height direction can be strengthened.

  In addition, the projection 223 and the recess 224 are provided in a pair at the joint 220 to be joined to the other reactor 1, the projection 223 is provided at the upper end or the lower end of the joint 220, and the recess 224 is the projection 223 of the joint 220. It was made to provide at the lower end or the upper end on the opposite side. Thereby, since the distance between the protrusion 223 and the recess 224 can be increased in the height direction, the coupling relationship in the height direction can be stabilized.

(3) The protrusion 22 is provided with a snap piece 225 whose tip is thicker than the base and hooked on the other reactor 1 and a recess 226 on which the snap piece 225 of the other reactor 1 is hooked. Thereby, the coupling | bonding relationship between reactors, especially the coupling | bonding relationship of a horizontal direction can be strengthened.

(4) The fixing portion 221 has a cylindrical shape, and the concave portion 222 has a cylindrical recess. Here, since the fixing portion 221 and the concave portion 222 extend in the height direction, the horizontal coupling relationship can be stabilized.

  In addition, when only one fixing part 221 is provided for each reactor 1 as in the present embodiment, the fixing force is sufficient for the installation target compared to the case where a plurality of the fixing parts 221 are provided, although sufficient fixing force is provided. Will decline. However, since the fixing portion 221 is fitted in the concave portion 222 and is coupled to another reactor 1, and the other reactor 1 also has a fixing force by the fixing portion 221, the reactor 1 alone has one fixing portion 221. Super fixing force can be obtained. It can also be said that the protrusions 223, the recesses 224, the snap pieces 225, and the recesses 226 have a structure capable of obtaining a fixing force exceeding one of the fixing portions 221.

(5) The resin case 20 is provided with openings 21a to 21c communicating with the internal space of the accommodating portion 21 on the side portion or the bottom portion. Thereby, the heat of the reactor main body 10 can be released to the outside by the openings 21a to 21c themselves. Moreover, a filler can be made to enter the inside of the accommodating part 21 from opening 21a-21c, and the core 11 and the coil 12 can be connected with a metal case continuously through a filler. That is, a path for radiating heat generated by the reactor main body 10 to the metal case can be formed by the filler. Thus, heat dissipation can be improved by at least one of the openings 21a to 21c.

(6) Terminals 227 and 228 on which the terminals 30a and 30b are arranged are provided on the upper surface of the resin case 20 with the terminals 30a and 30b electrically connected to the ends 12a and 12b of the coil 12, and the resin case 20 It was made to form continuously with resin of resin case 20 with resin to constitute. Thereby, it becomes unnecessary to draw out wiring from the ends 12a and 12b of the coil 12, and the reactor 1 as a whole can be downsized. Further, since the terminal blocks 227 and 228 can be formed by injection molding, the number of manufacturing steps can be reduced as compared with a case where a terminal block is provided separately.

[2. Other Embodiments]
The present invention is not limited to the first embodiment, and includes other embodiments described below. Moreover, the present invention also includes a form in which the first embodiment and the following other embodiments are all or any combination thereof. Furthermore, various omissions, replacements, and modifications can be made to these embodiments without departing from the scope of the invention, and modifications thereof are also included in the present invention. In addition, the following other embodiment demonstrates a different part from 1st Embodiment, attaches | subjects the same code | symbol about the same part as 1st Embodiment, and abbreviate | omits description.

(1) In 1st Embodiment, although the partial shape which protruded from the protrusion part 22a of the fixing | fixed part 221 was made into semi-cylindrical shape, it is good also as a shape which made a part of square tube shape protrude from the protrusion part 22a. In this case, the concave shape of the concave portion 222 is also a shape that follows the fixed portion 221.

(2) In the first embodiment, the protrusion 223 and the recess 224 are provided so as to extend in the horizontal direction, but may be provided so as to extend in the height direction. Thereby, it is possible to prevent the reactor 1 from shifting in the horizontal direction.

(3) In the first embodiment, the shape of the core 11 is substantially θ shape, but it may be annular, and the shape of the core members 11a and 11b is not particularly limited as long as the annular core 11 can be formed. For example, the core members 11a and 11b may be I-shaped, C-shaped, U-shaped, E-shaped, J-shaped, or the like.

(4) In 1st Embodiment, although the composite reactor was made into cyclic | annular shape, it is not limited to this. For example, as shown in FIG. 6, a zigzag shape may be used. The shape of the composite reactor can be matched to fit a limited space.

(5) In the first embodiment, the projecting portions 22 are provided on both sides of the accommodating portion 21, but the projecting portions 22 may be provided so as to project toward the annular hole. In this case, only one protrusion 22 is required for each resin case 20. For example, as shown in FIG. 7A, when a composite reactor is configured with three reactors 1, the triangle is divided into three triangular regions, each region is provided with a protruding portion 22, and the protruding portion 22 has a fixed portion 221, The recess 222, the protrusion 223, and the recess 224 may be provided. As shown in FIG. 7B, when a composite reactor is configured with four reactors 1, a quadrilateral is divided into four triangular regions, each region is provided with a protruding portion 22, and the protruding portion 22 has a fixed portion 221 and a recessed portion 222. Further, the protrusion 223 and the recess 224 may be provided. The same applies to any number of reactors 1.

(6) The composite reactor of the first embodiment can also be understood as follows. That is, the reactor 1 is the same as that of the first embodiment, and is a composite reactor in which the flat reactor 1 is arranged on each side of the central regular polygon in plan view, and the protruding portion 22 is provided between the reactor main bodies 1. It can also be taken as. That is, as shown in FIGS. 8A to 8C, the protruding portion 22 is provided in the gap S between the reactor bodies 10 arranged in an annular shape, and the fixing portion 221 and the recessed portion 222 are provided in the protruding portion 22. Anyway. Since a structure that serves as both fixing and coupling by the fixing portion 221 and the concave portion 222 is provided between the reactor bodies 10 arranged in an annular shape, the overall size can be reduced.

DESCRIPTION OF SYMBOLS 1 Reactor 10 Reactor main body 11 Core 11a, 11b Core member 12 Coil 12a, 12b End part 13 Insulating member 14 Connection part 20 Resin case 21 Storage part 21a-21c Opening 22 Protrusion part 22a, 22b Protrusion part 220 Joining part 221 Fixing part 221a Screw hole 222 Recess 223 Protrusion 224 Recess 225 Snap piece 226 Recess 227, 228 Terminal block 229 Base 230 Grip portion 30a, 30b Terminal 31 Screw hole

Claims (12)

A flat reactor,
A reactor body having a core and a coil;
A resin case for housing the reactor body;
With
The resin case has an accommodating portion that accommodates the reactor body inside, and a protruding portion that protrudes outward from the accommodating portion,
In the protrusion,
A protruding portion provided to further protrude from the protruding portion, and fixing the reactor to an installation target;
A first recess into which the fixed portion of the other reactor is fitted, and
Reactor characterized by. In the protrusion,
A protrusion further protruding from the protrusion,
A second recess into which the projection of the other reactor is fitted, and
The reactor according to claim 1. The protrusion and the second recess extend in a horizontal direction;
The reactor according to claim 2. The projection and the second recess are provided in a pair in a joint portion to be joined to the other reactor,
The protrusion is provided on the upper end or the lower end of the joint,
The second recess is provided at a lower end or an upper end opposite to the protrusion of the joint;
The reactor according to claim 3. In the protrusion,
The tip is thicker than the base, and a snap piece to be hooked on the other reactor,
A third recess into which the snap piece of the other reactor is hooked, and
The reactor in any one of Claims 1-4 characterized by these. The fixed part has a partial cylindrical shape protruding from the protruding part,
The first recess has a partially cylindrical recess;
The reactor according to any one of claims 1 to 5. The fixing portion and the first recess extend in a height direction;
The reactor according to claim 6. The resin case is provided with an opening communicating with the internal space of the housing part at a side part or a bottom part,
The reactor in any one of Claims 1-4 characterized by these. Comprising a terminal electrically connected to the end of the coil;
On the upper surface of the resin case, a terminal block for arranging the terminals is formed continuously with the resin of the resin case with a resin constituting the resin case,
The reactor according to any one of claims 1 to 8. A plurality of reactors according to any one of claims 1 to 9,
The fixing portion is fitted into the first recess of the other reactor, and the reactors are arranged adjacent to each other;
A composite reactor characterized by The fixed portion is fitted into the first recess of the other reactor, so that the overall shape forms an annular shape,
The composite reactor according to claim 10. A flat reactor is arranged on each side of the regular regular polygon in plan view,
The reactor is
A reactor body having a core and a coil;
A resin case for housing the reactor body;
A fixing portion for fixing the reactor to an installation target;
With
The resin case has an accommodating portion that accommodates the reactor body inside, and a protruding portion that protrudes outward from the accommodating portion,
In the protrusion,
The fixing portion provided to further protrude from the protruding portion;
A first recess into which the fixed portion of the other reactor is fitted, and
The protrusion is provided between the reactor bodies,
A composite reactor characterized by

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