JP2012146927A - Reactor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reactor that has a structure capable of suppressing a loss due to a leakage flux from gaps.SOLUTION: The reactor includes: a first outer core 12 having a first opposite surface 14; a second outer core 22 having a second opposite surface 24; two leg cores 32, 42 having first end faces 34, 44 connected via first gap elements 16 and second end faces 36, 46 connected via second gap elements 26, respectively; two coil bodies 40, 50; a first insulation member 52 having first hole portions 54 formed therethrough; and a second insulation member 62 having second hole portions 64 formed therethrough. The first insulation member has first coil contact projections 55 formed on a first inner surface so as to project toward the second opposite surface for contact with end portions of the coil bodies on one side, and the first insulation member has first core engagement projections 57 formed on a first outer surface so as to project away from the second opposite surface.

Description

  The present invention relates to a reactor used for an inverter circuit, an active filter circuit, and the like.

  As a reactor used for an inverter circuit, an active filter circuit, or the like, an E-shaped core with a coil wound around a central leg and a combination of an I-shaped core or two cores wound with a coil, The thing etc. which were connected by two external cores are proposed. Furthermore, a technique for adjusting the inductance characteristics of the reactor by providing a gap at the connecting portion between the cores has also been proposed. (See Patent Document 1, Patent Document 2, etc.).

JP-A-8-148353 Japanese Unexamined Patent Publication No. 2000-1000063

  In the prior art, a reactor in which a gap is provided at the connecting portion between the cores has an effect that the inductance characteristics can be easily adjusted. On the other hand, the leakage magnetic flux from the gap is linked to the current flowing through the coil, resulting in a large loss. The problem has occurred.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a reactor having a structure capable of suppressing loss due to leakage magnetic flux from a gap in a reactor in which a gap is provided in a connecting portion between cores. It is.

A reactor according to the present invention includes a first outer core having a first facing surface,
A second outer core having a second facing surface facing the first facing surface and disposed facing the first outer core;
A first end surface connected to the first opposing surface via a first gap material, and a second end surface connected to the second opposing surface via a second gap material, respectively. Two leg cores arranged opposite each other;
Including two coils wound around one of the leg cores, and two coil bodies provided corresponding to each of the leg cores;
It has a first outer surface that contacts the first opposing surface and a first inner surface that is the opposite surface of the first outer surface, and houses the first end surface of the leg core and the first gap material. A first insulating member that is formed corresponding to each of the leg cores, and that covers the first opposing surface of the first outer core except a portion corresponding to the first hole;
A second outer surface that contacts the second opposing surface and a second inner surface that is the opposite surface of the second outer surface, and stores the second end surface of the leg core and the second gap member. A second insulating member that is formed corresponding to each of the leg cores, and that covers the second facing surface of the second outer core except for a portion corresponding to the second hole; Have
A first coil that is disposed on an edge of the first hole portion on the first inner surface of the first insulating member and protrudes toward the second facing surface and contacts one end portion of the coil body. Contact protrusions are formed corresponding to the respective coil bodies,
A first core engaging protrusion is formed on the first outer surface of the first insulating member along the outer periphery of the first opposing surface and protrudes toward the opposite side of the second opposing surface. It is characterized by.

  In the reactor according to the present invention, the first gap member is accommodated in the first hole portion formed in the first insulating member, and the first coil contact protrusion formed on the edge of the first hole portion is one end of the coil body. Contact the part. In such a first insulating member, the first gap member is arranged outside the coil body, and the distance between the first gap member and the coil is secured, so that the leakage magnetic flux from the gap is linked to the current flowing through the coil. This can be effectively prevented.

  The first insulating member is positioned with respect to the first outer core by the first core engaging protrusions formed on the first outer surface and the first outer surface, and engages with the first outer core. That is, since the first core engaging protrusion is in contact with the side surface of the first outer core, and the first outer surface is in contact with the first opposing surface of the first outer core, the first insulating member is the first outer core. Is easily positioned.

  Furthermore, the first insulating member not only holds the coil body in the direction orthogonal to the direction in which the leg core extends by the first hole, but also extends by the first coil contact protrusion. The coil body is also held with respect to the direction. In addition, since the first insulating member engages with the first outer core, the positional relationship between the coil body and the leg core and the first outer core is determined, and the coil body and the leg core are determined with respect to the first outer core. Can be linked. Therefore, the reactor according to the present invention can reliably hold the coil body and has high earthquake resistance.

Further, in the reactor according to the present invention, the second inner surface of the second insulating member is disposed on an edge of the second hole portion and protrudes toward the first facing surface, and the other end of the coil body. The second coil contact protrusion that contacts the end of each of the coil bodies may be formed corresponding to each of the coil bodies,
A second core engagement protrusion is formed on the second outer surface of the second insulating member along the outer periphery of the second opposing surface and protrudes toward the opposite side of the first opposing surface. It may be.

  In such a reactor, not only the first insulating member located at one end of the coil body, but also the second insulating member located at the other end of the coil body, like the first insulating member, A second hole, a second coil contact protrusion, and a second core engagement protrusion are formed. Therefore, in addition to the first gap material, such a reactor ensures a distance between the second gap material and the coil body, and more effectively prevents the leakage magnetic flux from the gap from interlinking with the current flowing through the coil. Can be prevented.

  Further, since such a reactor can easily position and connect the coil body, the leg core and the second outer core in the same manner as the first insulating member, the second insulating member can be assembled. Is easy and has better seismic performance. In addition, the manufacturing cost can be reduced by using the second insulating member and the first insulating member as a common component.

Furthermore, in the reactor according to the present invention, the first core engagement protrusion may be continuously formed along an outer periphery of the first facing surface,
The second core engaging protrusion may be formed continuously along the outer periphery of the second facing surface.

  In such a reactor, since the first core engaging protrusion and the second core engaging protrusion are continuously formed along the outer periphery of the opposing surface of each outer core, the creeping distance between the coil and the outer core is small. Long and has good insulating properties.

FIG. 1 is a front view of a reactor according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the reactor shown in FIG. FIG. 3 is a top view and a front view of the gap member included in the reactor shown in FIGS. 1 and 2. FIG. 4 is a top view, a bottom view, a front view, and a side view of the first insulating member included in the reactor shown in FIGS. 1 and 3. FIG. 5 is a top view showing the shape of the gap material included in the reactor according to the first modification. FIG. 6 is a top view, a front view, and a side view of the first insulating member included in the reactor according to the second modification. FIG. 7 is an enlarged cross-sectional view showing a part of the cross-sectional view shown in FIG. 2 in an enlarged manner. FIG. 8 is an enlarged cross-sectional view in which a part of the reactor used as the sample 05 and the sample 06 in the embodiment is enlarged and displayed.

Embodiment FIG. 1 is a front view of a reactor 10 according to an embodiment of the present invention. The reactor 10 includes two coil bodies 40 and 50 including a cylindrical coil A38 and a coil B48, leg cores A32 and leg cores B42 through which the coil bodies A40 and coil bodies B50 are inserted, and leg cores 32. , 42 are connected to each other with the first outer core 12 and the second outer core 22 arranged above and below the reactor 10. Furthermore, the reactor 10 includes a first gap member 16 and a second gap member 26 for forming a magnetic gap between the leg cores 32 and 42 and the outer cores 12 and 22, coil bodies 40 and 50, and the outer core 12. , 22 are further provided with a first insulating member 52, a second insulating member 62, and the like that position each other.

  The first outer core 12 is disposed below the reactor 10. The first outer core 12 is disposed so as to face the second outer core 22 disposed on the top of the reactor 10, and the coils 38 and 48 and the leg portions are disposed between the first outer core 12 and the second outer core 22. Cores 32, 42, etc. are arranged. The first outer core 12 has a substantially rectangular parallelepiped shape, and the first facing surface 14 that is the upper surface of the first outer core 12 faces the second facing surface 24 that is the lower surface of the second outer core 22. Yes.

  The second outer core 22 is disposed on the top of the reactor 10. Similarly to the first outer core 12, the second outer core 22 has a substantially rectangular parallelepiped shape. The second outer core 22 has a second facing surface 24 that faces the first facing surface 14 of the first outer core 12, and is disposed facing the first outer core 12. The second outer core 22 and the first outer core 12 may have the same shape as each other, but are not particularly limited.

  Although the 1st outer core 12 and the 2nd outer core 22 are produced with soft magnetic materials, such as a metal dust material, a ferrite, and a silicon steel plate, it is not specifically limited.

  FIG. 2 is a cross-sectional view of reactor 10 shown in FIG. The leg core A32 and the leg core B42 are arranged so as to connect the first outer core 12 and the second outer core 22 via the gap members 16 and 26. The leg core A32 and the leg core B42 have a cylindrical shape and are arranged to face each other. The leg core A32 is composed of three parts including a first part 32a, a second part 32b, and a third part 32c that are separable from each other. Similarly to the leg core A32, the leg core B42 is also composed of three parts including a first part 42a, a second part 42b, and a third part 42c that are separable from each other. However, the division | segmentation number of leg part core A32 and leg part core B42 is not specifically limited.

  In the present embodiment, the leg core A32 and the leg core B42 have the same shape, but may have different shapes. The shape of the leg cores 32 and 42 is not limited to a cylindrical shape, and may be other shapes such as a polygonal column shape.

  Similarly to the first outer core 12 and the second outer core 22, the leg core A32 and the leg core B42 are also made of a metal powder material, a soft magnetic material such as ferrite or a silicon steel plate, but are not particularly limited. .

  The leg core A32 and the leg core B42 have first end faces 34 and 44 that are end faces on the first outer core 12 side, and second end faces 36 and 46 that are end faces on the second outer core 22 side. The first end surfaces 34 and 44 are connected to the first facing surface 14 of the first outer core 12 via the first gap material 16. The second end surfaces 36 and 46 are connected to the second facing surface 24 of the second outer core 22 via the second gap material 26.

  FIG. 3A is a top view of the first gap material 16, and FIG. 3B is a front view of the first gap material 16. The first gap member 16 has a disk-like outer shape. Further, the second gap material 26 has the same shape as the first gap material 16. The first gap material 16 and the second gap material 26 are made of a nonmagnetic material such as resin. Although the thickness L of the 1st gap material 16 and the 2nd gap material 26 is determined according to the inductance characteristic etc. which are required for the reactor 10, it can be about 1 mm, for example.

  As shown in FIG. 2, a coil body A40 is disposed on the outer periphery of the leg core A32. The coil body A40 includes a bobbin A39 and a coil A38. The coil A38 is wound around the leg core A32 via a bobbin A39. Similar to the leg core A32, a coil body B50 including a coil B48 and a bobbin B49 is disposed on the outer periphery of the leg core B42. The coil B48 is wound around the leg core B42 via a bobbin B49. The coil A38 and the coil B48 are manufactured by, for example, winding a conducting wire covered with an insulator, but are not particularly limited.

  The first insulating member 52 is disposed between the coil bodies 40 and 50 and the first outer core 12. The first insulating member 52 is in contact with the coil bodies 40 and 50 and the first outer core 12. Accordingly, the first insulating member 52 positions the coil bodies 40 and 50 and the leg cores 32 and 42 through which the coil bodies 40 and 50 are inserted with respect to the first outer core 12.

  The first insulating member 52 has a first inner side surface 53 that faces the center side of the reactor 10, and a first outer side surface 56 that is the opposite surface of the first inner side surface 53 and faces the outside of the reactor 10. The first outer surface 56 of the first insulating member 52 is in contact with the first facing surface 14 of the first outer core 12. The first insulating member 52 is formed with a first hole portion 54 that accommodates the first gap member 16 and the first end surfaces 34, 44 corresponding to the leg cores 32, 42. The first insulating member 52 covers the first facing surface 14 of the first outer core 12 except for the portion corresponding to the first hole 54.

  4A is a top view of the first insulating member 52, FIG. 4B is a bottom view of the first insulating member 52, FIG. 4C is a front view of the first insulating member 52, and FIG. 2 is a side view of one insulating member 52. FIG. As shown in FIG. 4A and the like, two first holes 54 are formed in the first insulating member 52, and the first holes 54 correspond to the leg cores 32 and 42, respectively. (See FIG. 2). As shown in FIG. 2, the first end surfaces 34 and 44 of the leg cores 32 and 42 and the first gap member 16 are accommodated in the first hole 54. The shape of the first hole portion 54 is similar to the cross-sectional shape of the leg cores 32 and 42, and the planar shape of the first hole portion 54 in the present embodiment is a circle.

  As shown in FIG. 4A and FIG. 4C and the like, two first coil contact protrusions 55 are formed on the first inner side surface 53 of the first insulating member 52. The 1st coil contact protrusion 55 is arrange | positioned at the edge of the 1st hole part 54, and is formed corresponding to each coil body 40 and 50 (refer FIG. 2). The first coil contact protrusion 55 has a ring shape that surrounds the edge of the first hole portion 54, and, as shown in FIG. 2, from the first inner side surface 53 to the second opposite of the second outer core 22. Projecting toward the surface 24. Further, the tips of the first coil contact protrusions 55 are in contact with one end portions 40a and 50a that are the end portions of the coil bodies 40 and 50 on the first outer core 12 side.

  As shown in FIG. 4B and FIG. 4D and the like, a first core engaging protrusion 57 is formed on the first outer surface 56 of the first insulating member 52. As shown in FIGS. 4B and 2, the first core engaging protrusion 57 is formed on the outer side of the reactor 10, that is, on the side opposite to the second facing surface 24 of the second outer core 22 from the first outer surface 56. Protrusively. Further, the first core engaging protrusion 57 is disposed along the outer periphery of the first facing surface 14 of the first outer core 12, and as shown in FIG. 7 which is a partially enlarged view of FIG. Is in contact with the side surface 15. Therefore, in the first insulating member 52, the first outer surface 56 is in contact with the first facing surface 14 of the first outer core 12, and the protrusion inner side surface 57 a of the first core engaging protrusion 57 is the side surface of the first outer core 12. 15 is engaged with the first outer core 12. As shown in FIG. 4B, the first core engaging protrusion 57 according to the present embodiment is continuously formed along the outer periphery of the first facing surface 14.

  As shown in FIG. 2, the second insulating member 62 is disposed between the coil bodies 40, 50 and the second outer core 22, and with respect to the first insulating member 52 with respect to the center portion of the reactor 10. It is arranged at a symmetrical position. The second insulating member 62 contacts or engages with the coil bodies 40, 50 and the second outer core 22, and positions the second outer core 22 with respect to the coil bodies 40, 50 and the leg cores 32, 42. To do.

  Similarly to the first insulating member 52, the second insulating member 62 includes a second inner side surface 63 facing the center side of the reactor 10, and a second outer side facing the outer side of the reactor 10 that is the opposite surface of the second inner side surface 63. Side surface 66. The second outer surface 66 is in contact with the second facing surface 24 of the second outer core 22. The second insulating member 62 is formed with second holes 64 for accommodating the second gap member 26 and the second end surfaces 36 and 46 corresponding to the leg cores 32 and 42, respectively. The second insulating member 62 covers the second facing surface 24 of the second outer core 22 except for the portion corresponding to the second hole 64.

  The shape of the second insulating member 62 is the same as that of the first insulating member 52 (see FIGS. 4A to 4D). That is, two second coil contact protrusions 65 are formed on the second inner side surface 63 of the second insulating member 62 so as to correspond to the respective coil bodies 40 and 50. The second coil contact protrusion 65 is disposed at the edge of each second hole 64 and protrudes toward the first facing surface 14, and the tip thereof is the end of the coil bodies 40, 50 on the second outer core 22 side. In contact with the other end 40b, 50b.

  Similar to the first outer surface 56 of the first insulating member 52, a second core engaging protrusion 67 is formed on the second outer surface 66 of the second insulating member 62. The second core engaging protrusion 67 protrudes toward the side opposite to the first facing surface 14 of the first outer core 12. Similarly to the first core engagement protrusion 57, the second core engagement protrusion 67 is disposed along the outer periphery of the second facing surface 24 of the second outer core 22, and is formed on the side surface 25 of the second outer core 22. Abut. Similar to the first core engagement protrusion 57, the second core engagement protrusion 67 is formed continuously along the outer periphery of the second facing surface 24. In addition, although the material of the 1st insulating member 52 and the 2nd insulating member 62 is not specifically limited, For example, it is comprised with nonmagnetic insulating materials, such as resin.

  In the reactor 10 according to the present embodiment, the gap members 16 and 26 are accommodated in the hole portions 54 and 64 of the insulating members 52 and 62, and the end portions 40 a, 40 b, 50 a and 50 b of the coil bodies 40 and 50 are included in the hole portion 54. , 64 contacts the coil contact protrusions 55, 65 formed on the edges. Therefore, in the reactor 10 having such insulating members 52 and 62, the magnetic gap formed between the leg cores 32 and 42 and the outer cores 12 and 22 can be disposed outside the coil bodies 40 and 50. it can. Thereby, the reactor 10 secures the distance between the coils 38 and 48 included in the coil bodies 40 and 50 and the magnetic gap, and the leakage magnetic flux from the magnetic gap and the coils 38 and 48 are linked to generate a loss. Can be effectively prevented. Moreover, the reactor 10 can prevent that a coil generate | occur | produces heat with generation | occurrence | production of such a loss.

  In the reactor 10 according to this embodiment, both end portions 34, 36, 44, 46 of the leg cores 32, 42 are accommodated in the holes 54, 64 of the insulating members 52, 62. Thereby, the coil bodies 40 and 50 inserted through the leg cores 32 and 42 are positioned with respect to the insulating members 52 and 62 in the left-right direction (direction perpendicular to the axial direction of the coil bodies 40 and 50). Further, the coil bodies 40, 50 are positioned in the vertical direction (the axial direction of the coils 40, 50) when the end portions 40a, 40b, 50a, 50b of the coil bodies 40, 50 are in contact with the coil contact protrusions 55, 65. Is done. Therefore, in the reactor 10 according to the present embodiment, the coil bodies 40 and 50 are easily and reliably positioned and held by the insulating members 52 and 62, so that the assembly is easy and the earthquake resistance is high.

  Further, in the reactor 10 according to the present embodiment, since the core engaging protrusions 57 and 67 protruding from the outer surfaces 56 and 66 are formed on the outer surfaces 56 and 66 of the insulating members 52 and 62, each outer core 12. , 22 and the insulating members 52, 62 are easily engaged. As a result, the outer cores 12 and 22, the leg cores 32 and 42 and the coil bodies 40 and 50 constituting the reactor 10 are securely connected by the insulating members 52 and 62, and the reactor 10 has good assemblability and seismic performance. Have

  Furthermore, in the reactor 10 according to the present embodiment, the core engaging protrusions 57 and 67 are continuously formed along the outer circumferences of the facing surfaces 14 and 24 of the outer cores 12 and 22, so that the coils 38 and 48 are formed. The creepage distance between the outer cores 12 and 22 is long, and the insulation characteristics between the coils 38 and 48 and the outer cores 12 and 22 are good.

  The reactor according to the present invention is not limited to the embodiment shown in FIGS. 1 to 4, and the shape and configuration of each member can be changed as appropriate, and a plurality of members made of the same material are integrated. Or one member can be divided into a plurality of parts. For example, the first gap member 16 shown in FIG. 2 may be integrated with the first insulating member 52, and the second gap member 26 may be integrated with the second insulating member 62. Further, the bobbin A39 and the bobbin B49 may be integrated with one or both of the first insulating member 52 and the second insulating member 62. Furthermore, in such a case, the member in which the bobbins 39 and 49 and the insulating members 52 and 62 are integrated is divided into a plurality of parts inside the coils 38 and 48 (portions corresponding to the bobbins 39 and 49). Also good.

  FIG. 5 is a top view of a first gap member 76 according to a modification, and the first gap member 76 has a ring shape. In the reactor 10 according to the embodiment, the shape of the gap material is not particularly limited. For example, the first gap material 76 shown in FIG. 5 can be used instead of the gap material 16 shown in FIG. The gap material may be integrated with the first insulating member 52 or the second insulating member 62.

  6A is a top view of the first insulating member 82 according to the second modification, FIG. 6B is a front view of the first insulating member 82, and FIG. 6C is the first view. 4 is a side view of an insulating member 82. FIG. In the reactor 10 shown in FIG. 1 and the like, the shape of the coil contact protrusion formed on the inner surface of the insulating member is not particularly limited, and examples shown in FIGS. 6A to 6C are given as one modification. It is done. A plurality of independent columnar first coil contact protrusions 85 are formed along the outer periphery of the first hole 84 on the first inner surface 83 of the first insulating member 82 according to the modification. In the reactor 10, a first insulating member 82 can be used in place of the first insulating member 52 or the second insulating member 62 shown in FIGS. In the reactor using the first insulating member 82, the first coil contact protrusion 85 is constituted by a plurality of independent pillars. Therefore, in addition to the effect of the reactor 10 described above, the leg cores 32 and 42 and the outer core 12, It is easy to release heat such as 22 and has the effect of excellent heat dissipation. The shapes of the first hole 84, the first outer surface 86, and the first core engaging protrusion 87 in the first insulating member 82 are the same as those of the first insulating member 82.

  Moreover, the first coil contact protrusions 55 and 85 shown in FIGS. 4 and 6 may be separate from the other portions of the first insulating members 52 and 82. In this case, the first coil contact protrusions 55 and 85 are installed on the first inner side surfaces 53 and 83 of the first insulating members 52 and 82 when the reactor 10 is assembled.

  EXAMPLES Hereinafter, although this invention is demonstrated based on an Example, this invention is not limited to these Examples.

  In the example, the reactor 10 shown in FIGS. 1 to 4 and 7 was prepared as the sample 01 to the sample 04, and the reactor efficiency of each sample was measured. The overall dimensions of the reactor 10 according to Sample 01 to Sample 04 were 75 mm width × 100 mm height × 45 mm depth.

  The reactor 10 according to the samples 01 to 04 is obtained by changing the protruding amounts of the first and second coil contact protrusions 55 and 65 in the first insulating member 52 and the second insulating member 62 (see FIG. 2). Thereby, the reactor 10 which concerns on the sample 01-sample 04 differs in the separation distance D (refer FIG. 7) of the gap materials 16 and 26 and the coil bodies 40 and 50 mutually. In addition, the separation distance D of four places contained in one sample was made the same, and the magnitude | size of the gap materials 16 and 26 in the 1st insulating member 52 and the 2nd insulating member 62 was 25 mm diameter x 1 mm thickness. Table 1 shows the measurement results of the separation distance D and the reactor efficiency of each of the samples 01 to 04.

  Further, as sample 05 and sample 06, as shown in FIG. 8, a reactor using an insulating member 92 on which the first and second coil contact protrusions 55 and 65 are not formed is prepared, and the reactor efficiency of each sample is measured. did. As shown in FIG. 8, in the reactors according to the sample 05 and the sample 06, at least a part of the gap members 16 and 26 are located in the coil bodies 40 and 50, and the gap members 16 and 26 and the coil bodies 40 and The separation distance D with respect to 50 is negative. The shapes of the sample 05 and the sample 06 are the same as those of the reactor 10 according to the samples 01 to 04 except that the gap distances D between the gap members 16 and 26 and the coil bodies 40 and 50 are different. Table 1 shows the measurement results of the separation distance D and the reactor efficiency of sample 05 and sample 06.

  As shown in Table 1, Sample 01 to Sample 04 having the first and second coil contact protrusions 55 and 65 include a sample 05 in which at least a part of the gap members 16 and 26 are located in the coil bodies 40 and 50, and Reactor efficiency is better than sample 06. Further, it can be seen from Table 1 that the reactor efficiency is improved as the separation distance D between the gap members 16 and 26 and the coil bodies 40 and 50 is increased. Therefore, the separation distance D is preferably 2 mm or more, and more preferably 5 mm or more, from the viewpoint of improving the reactor efficiency. However, since the reactor efficiency improvement effect per unit separation distance D tends to decrease as the separation distance D increases, the separation distance D is 5 to 10 mm from the viewpoint of achieving both reactor efficiency and reactor miniaturization. It is preferable to set the degree.

DESCRIPTION OF SYMBOLS 10 ... Reactor 12 ... 1st outer core 14 ... 1st opposing surface 16,76 ... 1st gap material 22 ... 2nd outer core 24 ... 2nd opposing surface 26 ... 2nd gap material 32 ... Leg core A
34 ... 1st end surface 36 ... 2nd end surface 38 ... Coil A
39 ... Bobbin A
40 ... Coil body A
40a ... one end 40b ... the other end 42 ... leg core B
44 ... 1st end surface 46 ... 2nd end surface 48 ... Coil B
49 ... Bobbin B
50 ... Coil body B
50a ... One end 50b ... The other end 52, 82 ... First insulating member 53, 83 ... First inner surface 54, 84 ... First hole 55, 85 ... First coil contact projection 56, 86 ... First DESCRIPTION OF SYMBOLS 1 Outer surface 57,87 ... 1st core engagement protrusion 57a ... Protrusion inner side surface 62 ... 2nd insulating member 63 ... 2nd inner surface 64 ... 2nd hole 65 ... 2nd coil contact protrusion 66 ... 2nd outer surface 67 ... Second core engagement protrusion

Claims (3)

A first outer core having a first opposing surface;
A second outer core having a second facing surface facing the first facing surface and disposed facing the first outer core;
A first end surface connected to the first opposing surface via a first gap material, and a second end surface connected to the second opposing surface via a second gap material, respectively. Two leg cores arranged opposite each other;
Including two coils wound around one of the leg cores, and two coil bodies provided corresponding to each of the leg cores;
It has a first outer surface that contacts the first opposing surface and a first inner surface that is the opposite surface of the first outer surface, and houses the first end surface of the leg core and the first gap material. A first insulating member that is formed corresponding to each of the leg cores, and that covers the first opposing surface of the first outer core except a portion corresponding to the first hole;
A second outer surface that contacts the second opposing surface and a second inner surface that is the opposite surface of the second outer surface, and stores the second end surface of the leg core and the second gap member. A second insulating member that is formed corresponding to each of the leg cores, and that covers the second facing surface of the second outer core except for a portion corresponding to the second hole; Have
A first coil that is disposed on an edge of the first hole portion on the first inner surface of the first insulating member and protrudes toward the second facing surface and contacts one end portion of the coil body. Contact protrusions are formed corresponding to the respective coil bodies,
A first core engaging protrusion is formed on the first outer surface of the first insulating member along the outer periphery of the first opposing surface and protrudes toward the opposite side of the second opposing surface. A reactor characterized by A second coil that is disposed on an edge of the second hole on the second inner surface of the second insulating member and protrudes toward the first facing surface and contacts the other end of the coil body Contact protrusions are formed corresponding to the respective coil bodies,
A second core engagement protrusion is formed on the second outer surface of the second insulating member along the outer periphery of the second opposing surface and protrudes toward the opposite side of the first opposing surface. The reactor of Claim 1 characterized by the above-mentioned. The first core engaging protrusion is continuously formed along the outer periphery of the first facing surface,
The reactor according to claim 2, wherein the second core engaging protrusion is continuously formed along an outer periphery of the second facing surface.

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