JP2006294829A - Reactor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reactor in which assembling workability can be enhanced while preventing misregistration of coils. <P>SOLUTION: In the reactor 1, the core 3 is constituted by bonding a plurality of magnetic bodies 11a-11f and a plurality of gaps 13a-13f, and tubular resin members 7A and 7B are interposed between the core 3 and coils 5A and 5B in order to enhance assembling workability of the reactor 1 and to prevent misregistration of the coils 5A and 5B. The coils 5A and 5B are coated to completely cover the portion of the core 3 where the gaps 13a-13f are interposed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a positioning structure for a coil of a reactor.

  Although the reactor is configured with the core coil on the exterior, it is difficult to form the coil so that the inner peripheral cross-sectional shape of the coil closely matches the cross-sectional shape of the core due to the influence of the spring back of the coil wire. .

  For this reason, conventionally, an undesired gap is generated between the core and the coil, and as a result, it is necessary to assemble the core and attach the coil with insufficient positioning between the core and the coil. There are problems that it is difficult to perform the work and that the coil is liable to be displaced.

  Therefore, the problem to be solved by the present invention is to provide a reactor that can improve the assembly workability of the reactor and prevent the coil from being displaced.

  In order to solve the above-mentioned problem, in the invention of claim 1, in the reactor, the core, the coil sheathed on the core, the core and the coil are interposed between the core and the coil. Positioning means made of a resin material to be positioned.

  According to a second aspect of the present invention, in the reactor according to the first aspect of the invention, the portion of the core where the coil is sheathed has a substantially cylindrical shape along the magnetic path, and the positioning means is substantially It is a substantially cylindrical resin member having a small internal cavity.

  According to a third aspect of the present invention, in the reactor according to the first or second aspect of the present invention, a gap is inserted in the core, and the coil covers a portion of the core where the gap is inserted. The exterior.

  According to a fourth aspect of the present invention, in the reactor according to the first aspect of the present invention, the core is interposed between the magnetic bodies and a plurality of magnetic bodies arranged along a magnetic path. And at least a part of the outer edge portion of the magnetic body has at least one gap projecting outward from the outer peripheral surface of the magnetic body on both sides, and the coil includes a portion where the gap of the core is inserted. The positioning means is a resin member having a substantially cylindrical shape, and is projected from the outer peripheral surface of the magnetic body on both sides at the outer edge portion of the gap. A groove portion into which the portion is fitted is provided.

  According to a fifth aspect of the present invention, in the reactor according to the first aspect of the present invention, the core is interposed between a plurality of magnetic bodies arranged along a magnetic path and the magnetic body, and the insertion portion thereof. And at least a part of the outer edge of the magnetic body is retracted inwardly from the outer peripheral surface of the magnetic body on both sides, and the coil is a part in which the gap of the core is inserted The positioning means is a resin member having a substantially cylindrical shape, and the outer peripheral portion of the gap in the insertion portion of the gap is disposed on both sides of the inner peripheral surface of the resin member. Protrusions that fit into the portions retracted from the outer peripheral surface of the magnetic body are provided.

  According to a sixth aspect of the present invention, in the reactor according to the fourth or fifth aspect of the present invention, the resin member is constituted by a plurality of divided parts divided by a divided surface along the magnetic path.

  According to a seventh aspect of the present invention, in the reactor according to the first aspect of the present invention, the positioning means is made of a curable resin provided between the core and the coil.

  According to the first aspect of the present invention, the positioning means is made of a resin material by inserting the positioning means made of a resin material between the core and the coil. Thus, the cross-sectional shape can be easily fitted by the cross-sectional shape of the inner periphery of the coil. For this reason, it is possible to assemble the reactor in a state where the core and the coil are sufficiently positioned. As a result, it is possible to improve the assembling workability of the reactor and prevent the coil from being displaced.

  Moreover, the insulation between a coil and a core can be improved by the positioning means which consists of resin materials.

  According to the second aspect of the present invention, since the resin member can be mounted only by inserting the portion where the coil of the core is sheathed into the substantially cylindrical resin member having the substantially hollow internal cavity, the resin member Can be constituted by an integrally molded product, and the assembly process of the reactor can be simplified.

  According to the third aspect of the present invention, since the coil is packaged so as to cover the portion where the gap of the core is inserted, leakage magnetic flux at the gap insertion portion can be suppressed.

  According to the fourth aspect of the present invention, in the groove portion provided on the inner peripheral surface of the substantially cylindrical resin member which is the positioning means, the portion protruding from the outer peripheral surface of the magnetic body on both sides at the outer edge portion of the gap is provided. Since it is the structure to fit, a reactor can be assembled in the state which performed positioning with respect to the magnetic path direction of a core, a resin member, and a coil more reliably.

  Moreover, since the coil is packaged so as to cover the portion where the core gap is inserted, leakage magnetic flux at the gap insertion portion can be suppressed.

  According to the fifth aspect of the present invention, the convex portion provided on the inner peripheral surface of the substantially cylindrical resin member that is the positioning means is the outer edge of the gap in the insertion portion of the core gap in the outer edge portion of the gap. Since the part fits into the part retracted from the outer peripheral surface of the magnetic body on both sides, the core of the resin member and the coil are positioned more reliably in the magnetic path direction, and the reactor Assembly can be performed.

  In addition, the thickness of the resin member can be reduced to the extent that there is no groove, compared to a configuration in which a convex portion is provided on the core side and a groove portion is provided on the resin member side. Can be improved.

  Moreover, since the coil is packaged so as to cover the portion where the core gap is inserted, leakage magnetic flux at the gap insertion portion can be suppressed.

  According to invention of Claim 6, since the resin member is comprised by the several division | segmentation part divided | segmented by the division surface along a magnetic path, the resin member with respect to the coil exterior part of the core which has an unevenness | corrugation in an outer peripheral surface Can be easily attached.

  According to the seventh aspect of the present invention, the core and the coil can be easily positioned by providing the curable resin as the positioning means between the core and the coil.

  Moreover, since it is not necessary to provide a space for inserting a resin member or the like between the inner peripheral surface of the coil and the core, the reactor can be reduced in size or the space factor of the coil can be improved accordingly.

<First Embodiment>
FIG. 1 is a cross-sectional view taken along a plane parallel to the magnetic path of the reactor according to the first embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line A1-A1 of the reactor of FIG. As shown in FIGS. 1 and 2, the reactor 1 includes a core 3 having a substantially toroidal shape (for example, a substantially rectangular toroidal shape), coils 5 </ b> A and 5 </ b> B sheathed on the outer periphery of the core 3, and positioning means of the present invention. And a resin member (bobbin) 7A, 7B corresponding to the above, and used for a power supply system (particularly, a boost converter) for driving a hybrid vehicle or an electric vehicle.

  The core 3 includes a plurality of (for example, six) magnetic bodies 11a to 11f (when these are collectively referred to, the reference numeral “11” is used) and at least one (for example, six) gaps 13a to 13f ( When these are collectively referred to, the reference numeral “13” is used).

  The magnetic bodies 11a and 11b having a substantially U shape in a plan view include two opposite sides of the four sides of the core 3, corner portions on both sides of the sides, and the remaining two sides (hereinafter referred to as the coil exterior portion 15A, 15B) and the remaining two sets of magnetic bodies 11c, 11d and 11e, 11f having a substantially rectangular parallelepiped shape constitute intermediate portions of the coil exterior portions 15A, 15B.

  Each of the magnetic bodies 11a to 11f is composed of a metal magnetic powder or a powder magnetic body obtained by binding a metal magnetic powder covered with a predetermined insulating film with a resin, and the powder magnetic material is formed into a predetermined mold. After filling, pressurizing and compressing, it is formed by heat treatment. In addition, in this embodiment, although the magnetic bodies 11a-11f were formed with the dust magnetic body, you may form these with a silicon steel plate.

  The gaps 13a to 13f are plate-like members having a thickness of about 1 mm and made of ceramic (alumina or the like) that is good in terms of heat resistance and linear expansion coefficient. As shown in FIG. It is inserted between the bodies 11a to 11f. The cross-sectional shape of the gaps 13a to 13f (note that this “cross-section” refers to a cross-section perpendicular to the magnetic path. The same applies hereinafter) and the cross-sectional size are the shapes of the end faces that contact the gaps 13a to 13f of the magnetic bodies 11a ( For example, a rectangle) and a size are matched. For this reason, the coil exterior parts 15A and 15B of the core 3 have a linear and slender shape along the magnetic path.

  Joining of the magnetic body 11 and the gap 13 at each gap insertion portion of the core 3 is performed as follows. That is, in each gap insertion part, as shown in FIG.3 and FIG.4, by providing the adhesive agent 23 to the outer periphery of the contact part 21 of the magnetic body 11 and the gap 13, the magnetic body 11 is provided. And the gap 13 are bonded together. As the adhesive 23, an epoxy adhesive having excellent heat resistance is used.

  More specifically, in each gap insertion portion, the adhesive 23 is applied independently (separated from each other) for each contact portion 21 located on both sides of each gap 13. As a modification, the adhesive 23 may be applied so as to cover the two contact portions 21 located on both sides of each gap 13 at a time in each gap insertion portion.

  The coils 5 </ b> A and 5 </ b> B are configured by, for example, flat wires wound edgewise and are packaged so as to cover the three gap insertion portions of the coil exterior portions 15 </ b> A and 15 </ b> B of the core 3 at a time. As a modification, the coils 5A and 5B may be configured by round wires.

  The resin members 7A and 7B are integrally formed of a resin excellent in heat resistance (for example, polyphenylene sulfide (PPS)), and the shape of the inner and outer circumferences is a narrow cylinder. The cross-sectional shape of the internal cavities of the resin members 7A and 7B is set to a shape (for example, a rectangular shape) that fits snugly around the coil exterior portions 15A and 15B of the core 3, and the cross-sectional shape of the outer peripheral portion thereof is It is set to a shape (for example, a shape in which a rectangular corner is greatly rounded) that fits snugly into the inner peripheral portions of the coils 5A and 5B.

  Such an assembly of the reactor 1A is performed as follows.

  First, as shown in FIG. 5, the coil exterior portions 15A and 15B of the core 3 are assembled (joined). That is, the magnetic bodies 11c and 11d and the gaps 13a to 13c are joined, and the magnetic bodies 11e and 11f and the gaps 13d to 13f are joined. Then, the joined bodies of the magnetic bodies 11c and 11d and the gaps 13a to 13c and the joined bodies of the magnetic bodies 11e and 11f and the gaps 13d to 13f are inserted into the resin members 7A and 7B. At this time, the coils 5A and 5B may be externally inserted into the resin members 7A and 7B before the joined body is inserted into the resin members 7A and 7B, or after the joined body is inserted into the resin members 7A and 7B. , 7B may be extrapolated.

  Subsequently, as shown in FIG. 6, both end portions of the substantially U-shaped magnetic bodies 11a and 11b are inserted into the resin members 7A and 7B, and joined to the joined body previously inserted into the resin members 7A and 7B. To do. For example, this joining operation is performed by adhering to the outer periphery of the contact portion 21 between the gaps 13a, 13c, 13d, and 13f and the magnetic members 11a and 11b through the gaps between the magnetic members 11a and 11b and the resin members 7A and 7B. It is carried out by applying the agent 23. At this time, in a state where the coils 5A and 5B are positioned by the resin members 7A and 7B, both end portions of the magnetic bodies 11a and 11b are inserted into the resin members 7A and 7B. Since it is guided by the members 7A and 7B and properly aligned so as to come into contact with the joined body, the joining work of the magnetic bodies 11a and 11b can be easily performed, and the coil 5A. , 5B can be easily positioned. As a modification, as shown in FIG. 7, a joined body of magnetic bodies 11c and 11d and gaps 13a to 13c, a joined body of magnetic bodies 11e and 11f and gaps 13d to 13f, and a substantially U-shaped magnetic body 11a. (Or 11b) may be inserted into the resin members 7A and 7B with the coil exterior portions 15A and 15B being joined together.

  As described above, according to the present embodiment, the resin members 7A and 7B are made of resin by inserting the resin members 7A and 7B between the core 3 and the coils 5A and 5B. Compared with the magnetic body 11 etc. which comprise, the cross-sectional shape can be easily fitted with the cross-sectional shape of the inner periphery of coil 5A, 5B. For this reason, the reactor 1 can be assembled in a state where the core 3 and the coils 5A and 5B are sufficiently positioned. As a result, the assembling workability of the reactor 1 is improved and the displacement of the coils 5A and 5B is prevented. I can plan.

  Further, the insulation between the coils 5A and 5B and the core 3 can be improved by inserting the resin members 7A and 7B.

  Further, since the resin members 7A and 7B can be mounted simply by inserting the coil exterior portions 15A and 15B of the core 3 into the cylindrical resin members 7A and 7B, the resin members 7A and 7B are formed of an integrally molded product. And the assembly process of the reactor 1 can be simplified.

  Moreover, since the coils 5A and 5B are packaged so as to completely cover the portion where the gaps 13a to 13f of the core 3 are inserted, the leakage magnetic flux at the gap insertion portion can be suppressed.

  Moreover, since it is the structure which adhere | attaches the magnetic body 11 and the gap 13 by providing the adhesive agent 23 to the outer periphery of the contact part 21 of the magnetic body 11 and the gap 13, to the gap length in each gap insertion part As a result, it is possible to provide a high-quality reactor 1 in which the gap length error of the core 1 is suppressed and the variation in inductance is suppressed.

Second Embodiment
8 is a cross-sectional view taken along a plane parallel to the magnetic path of the reactor according to the second embodiment of the present invention, and FIG. 9 is a cross-sectional view taken along line A2-A2 of the reactor of FIG. FIG. 11 is a perspective view of a gap insertion portion of the reactor of FIG. 8, and FIG. 11 is a cross-sectional view of the gap insertion portion of FIG. The reactor 1A in the present embodiment is substantially different from the reactor 1 in the first embodiment described above only in the configuration of the gap insertion portion of the core 3 and the resin members 7A and 7B and the related portions, and corresponds to each other. Parts are denoted by the same reference numerals and description thereof is omitted.

  In the present embodiment, as shown in FIG. 8 and FIG. 11, in each gap insertion portion of the core 3, the cross-sectional size of the gap 13 is set larger than the size of the end face of the magnetic body 11 on both sides thereof. . And in each gap insertion part, it arrange | positions so that the outer edge part of the gap 13 may protrude outward from the outer periphery of the magnetic body 11 of both sides, and the adhesive agent 23 may be the both sides of the overhang | projection part 31 of the gap 13 The gaps 13 and the magnetic bodies 11 on both sides thereof are bonded to each other surface and the outer peripheral surfaces of the end portions of the magnetic bodies 11 on both sides. For this reason, compared with the application form of the adhesive 23 in FIG. 3 described above, the adhesive area of the adhesive 23 in the vicinity of the contact portion 21 between each gap 13 and each magnetic body 11 is enlarged.

  Correspondingly, a circumferential groove portion 33 into which the flange portion 31 of the gap 13 is fitted is provided on the inner peripheral surfaces of the resin members 7A and 7B. Further, as shown in FIG. 9, the resin members 7 </ b> A and 7 </ b> B are formed by two divided parts 35 and 37 that are divided by a divided surface along the magnetic path of the core 3 (here, a divided surface parallel to the magnetic path). It is configured.

  The assembly of such a reactor 1A is performed as follows. First, a joined body of the magnetic bodies 11c and 11d and the gaps 13a to 13c and a joined body of the magnetic bodies 11e and 11f and the gaps 13d to 13f are formed, and the divided parts 35 of the resin members 7A and 7B are formed in the joined bodies. , 37 are sandwiched, and then the coils 5A, 5B are extrapolated to the combined resin members 7A, 7B. The subsequent steps (joining steps of the magnetic bodies 11a and 11b) are the same as those of the reactor 1 according to the first embodiment. Also in the present embodiment, as shown in FIG. 7 described above, the joined body of the magnetic bodies 11c and 11d and the gaps 13a to 13c, the joined body of the magnetic bodies 11e and 11f and the gaps 13d to 13f, and the substantially U-shaped The resin members 7A and 7B may be mounted in a state where the magnetic body 11a (or 11b) is bonded first.

  As described above, also in the present embodiment, substantially the same effects as those of the first embodiment are obtained except for the configuration of the gap insertion portion of the core 3 and the resin members 7A and 7B and the related portions, and the resin. Since the protruding portion 31 of the gap 13 is fitted into the circumferential groove portion 33 provided on the inner peripheral surface of the members 7A and 7B, the core 3, the resin members 7A and 7B, and the coils 5A and 5B Reactor 1A can be assembled in a state in which positioning in the magnetic path direction is more reliably performed.

  Further, since the resin members 7A and 7B are constituted by the two divided parts 35 and 37 divided by the divided surface along the magnetic path, the resin for the coil exterior portions 15a and 15b of the core 3 having the unevenness on the outer peripheral surface. The members 7A and 7B can be easily attached.

<Third Embodiment>
12 is a cross-sectional view taken along a plane parallel to the magnetic path of the reactor according to the third embodiment of the present invention, and FIG. 13 is a cross-sectional view taken along line A3-A3 of the reactor of FIG. FIG. 15 is a perspective view of the gap insertion portion of the reactor of FIG. 12, and FIG. 15 is a cross-sectional view of the gap insertion portion of FIG. The reactor 1B in the present embodiment is substantially different from the reactor 1 in the second embodiment described above in that the concave-convex relationship in the gap insertion portion of the core 3 and the resin members 7A, 7B is reversed. It is only the relevant part, and the part which respond | corresponds mutually attaches | subjects the same referential mark, and abbreviate | omits description.

  In this embodiment, as shown in FIG. 12 and FIG. 15, the cross-sectional size of the gap 13 is set smaller than the size of the end face of the magnetic body 11 on both sides of each gap insertion portion of the core 3. And in each gap insertion part, the circumferential groove part 41 is formed by the outer peripheral surface of the gap 13, and the end surface of the magnetic body 11 of the both sides of the gap 13, and the adhesive agent 23 is provided in the circumferential groove part 41 (for example, The outer peripheral surface of the gap 13 and the end surface of the magnetic body 11 in the peripheral groove portion 11 are attached to the corner at a right angle), and the gap 13 and the magnetic bodies 11 on both sides thereof are bonded. For this reason, compared with the application form of the adhesive 23 in FIG. 3 described above, the adhesive area of the adhesive 23 in the vicinity of the contact portion 21 between each gap 13 and each magnetic body 11 is enlarged.

  Corresponding to this, on the inner peripheral surfaces of the resin members 7A and 7B, there are provided convex portions 43 that are continuous in the circumferential direction and are fitted into the peripheral groove portions 41 provided in the gap insertion portions of the core 3. Further, as shown in FIG. 13, the resin members 7 </ b> A and 7 </ b> B are divided into two divided parts 45 divided by a divided surface (here, a divided surface orthogonal to the divided surface of FIG. 9) along the magnetic path of the core 3. , 47.

  Since the assembly process of reactor 1B is the same as that of the above-mentioned 2nd Embodiment, description is abbreviate | omitted.

  As described above, also in the present embodiment, substantially the same effect as that of the second embodiment described above can be obtained, and a convex portion (projecting portion 31) on the core 3 side, a resin member, as in the second embodiment. Compared to the configuration in which the groove portion (circumferential groove portion 33) is provided on the 7A, 7B side, the thickness of the resin members 7A, 7B can be reduced by the absence of the groove portion, and accordingly, the reactor 1B can be reduced in size or the coil 5A, 5B space factor can be improved.

<Fourth embodiment>
FIG. 16 is a cross-sectional view taken along a plane parallel to the magnetic path of the reactor according to the fourth embodiment of the present invention. Reactor 1C in the present embodiment is substantially different from reactor 1 in the first embodiment described above only in that curable resin 51 is used instead of resin members 7A and 7B as positioning means and its related parts. The parts corresponding to each other are denoted by the same reference numerals and the description thereof is omitted.

  In the present embodiment, as shown in FIG. 16, the core 3 and the coils 5 </ b> A and 5 </ b> B are formed by the curable resin 51 provided in the gap between the coil extrapolation portions 15 </ b> A and 15 </ b> B of the core 3 and the coils 5 </ b> A and 5 </ b> B. Is positioned and fixed.

  In the assembly of the reactor 1C in the present embodiment, for example, a joined body of the magnetic bodies 11c and 11d and the gaps 13a to 13c, and a joined body of the magnetic bodies 11e and 11f and the gaps 13d to 13f are formed. The coils 5A and 5B are extrapolated, a curable resin 51 is applied between the joined body and the coils 5A and 5B, and these are bonded together. Subsequently, both ends of the substantially U-shaped magnetic bodies 11a and 11b are connected to the coil 5A. , 5B, and an adhesive 23 is applied to bond each bonded body to the magnetic bodies 11a, 11b, and between the both ends of the magnetic bodies 11a, 11b and the coils 5A, 5B, the curable resin 51 is inserted. (As a modification, the bonded body and the magnetic bodies 11a and 11b are bonded to each other by the curable resin 51 provided between both ends of the magnetic bodies 11a and 11b and the coils 5A and 5B. May be also used as a case). Also in the present embodiment, as shown in FIG. 7 described above, the joined body of the magnetic bodies 11c and 11d and the gaps 13a to 13c, the joined body of the magnetic bodies 11e and 11f and the gaps 13d to 13f, and the substantially U-shaped In a state where the magnetic body 11a (or 11b) is bonded first, a portion of the bonded body may be inserted into the coils 5A and 5B to apply the curable resin 51.

  As described above, also in this embodiment, since the core 3 and the coils 5A and 5B are positioned by the curable resin 51, for example, the joined body of the magnetic bodies 11c and 11d and the gaps 13a to 13c and the magnetic In a state where the bodies 11e and 11f and the joined bodies of the gaps 13d to 13f are inserted into the coils 5A and 5B and positioned by the curable resin 51, the joined bodies and the magnetic bodies 11a and 11b can be joined. Therefore, the reactor 1C can be assembled in a state where the core 3 and the coils 5A and 5B are sufficiently positioned. As a result, it is possible to improve the assembly workability of the reactor 1C and prevent the coil from being displaced.

  Further, since it is not necessary to provide a space for inserting a resin member or the like between the inner peripheral surfaces of the coils 5A and 5B and the core 3, the reactor 1C can be reduced in size or the space factor of the coils 5A and 5B can be improved accordingly. Can be planned.

  Further, the presence of the curable resin 51 can improve the insulation between the coils 5 </ b> A and 5 </ b> B and the core 3.

  In addition, effects similar to those of the first embodiment described above are also obtained in terms of suppressing leakage magnetic flux at the gap insertion portion of the core 3 and suppressing variation in inductance by suppressing gap length error of the core 1. Is obtained.

  The technology according to each of the above embodiments may be applied to a transformer.

It is sectional drawing cut by the surface parallel to the magnetic path of the reactor which concerns on 1st Embodiment of this invention. It is sectional drawing along the A1-A1 line of the reactor of FIG. It is a perspective view of the gap insertion part of the reactor of FIG. It is sectional drawing of the gap insertion part of FIG. It is a figure which shows the assembly process of the reactor of FIG. It is a figure which shows the assembly process of the reactor of FIG. It is a figure which shows the modification of the assembly process of the reactor of FIG. It is sectional drawing cut by the surface parallel to the magnetic path of the reactor which concerns on 2nd Embodiment of this invention. It is sectional drawing along the A2-A2 line of the reactor of FIG. It is a perspective view of the gap insertion part of the reactor of FIG. It is sectional drawing of the gap insertion part of FIG. It is sectional drawing cut by the surface parallel to the magnetic path of the reactor which concerns on 3rd Embodiment of this invention. It is sectional drawing along the A3-A3 line of the reactor of FIG. It is a perspective view of the gap insertion part of the reactor of FIG. It is sectional drawing of the gap insertion part of FIG. It is sectional drawing cut by the surface parallel to the magnetic path of the reactor which concerns on 4th Embodiment of this invention.

Explanation of symbols

1, 1A-1C reactor 3 core 5A, 5B coil 7A, 7B resin member 11, 11a-11f magnetic body 13, 13a-13f gap 15A, 15B coil exterior part 23 adhesive 31 overhang part 33 circumferential groove part 35, 37 division Part 41 Circumferential groove part 33 Convex part 45, 47 Split part 51 Curable resin

Claims (7)

The core,
A coil sheathed on the core;
Positioning means made of a resin material that is interposed between the core and the coil and positions the core and the coil;
The reactor characterized by providing. The reactor according to claim 1,
The portion of the core where the coil is sheathed has a substantially cylindrical shape along the magnetic path,
The reactor according to claim 1, wherein the positioning means is a substantially cylindrical resin member having a substantially hollow internal cavity. In the reactor according to claim 1 or 2,
A gap is inserted in the core,
The reactor is characterized in that the coil is sheathed so as to cover a portion where the gap of the core is inserted. The reactor according to claim 1,
The core is
A plurality of magnetic bodies arranged along a magnetic path;
At least one gap that is inserted between the magnetic bodies, and at least a part of the outer edge portion of the insertion section protrudes outward from the outer peripheral surfaces of the magnetic bodies on both sides;
With
The coil is sheathed so as to cover a portion where the gap of the core is inserted,
The positioning means is a resin member having a substantially cylindrical shape,
The reactor is characterized in that a groove portion into which a portion protruding from the outer peripheral surface of the magnetic body on both sides of the outer edge portion of the gap is fitted is provided on the inner peripheral surface of the resin member. The reactor according to claim 1,
The core is
A plurality of magnetic bodies arranged along a magnetic path;
At least one gap that is inserted between the magnetic bodies, and at least a part of the outer edge portion of the insertion part is recessed inward from the outer peripheral surfaces of the magnetic bodies on both sides;
With
The coil is sheathed so as to cover a portion where the gap of the core is inserted,
The positioning means is a resin member having a substantially cylindrical shape,
The inner peripheral surface of the resin member is provided with a convex portion that fits into a portion where the outer edge portion of the gap in the insertion portion of the gap is retracted from the outer peripheral surface of the magnetic body on both sides. Characteristic reactor. In the reactor according to claim 4 or 5,
The said resin member is comprised by the some division | segmentation part divided | segmented by the division surface along the said magnetic path, The reactor characterized by the above-mentioned. The reactor according to claim 1,
The said positioning means is comprised with the curable resin provided between the said core and the said coil, The reactor characterized by the above-mentioned.

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