WO2020105469A1 - Réacteur - Google Patents

Réacteur

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Publication number
WO2020105469A1
WO2020105469A1 PCT/JP2019/043822 JP2019043822W WO2020105469A1 WO 2020105469 A1 WO2020105469 A1 WO 2020105469A1 JP 2019043822 W JP2019043822 W JP 2019043822W WO 2020105469 A1 WO2020105469 A1 WO 2020105469A1
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WO
WIPO (PCT)
Prior art keywords
case
portions
bottom plate
winding
holding members
Prior art date
Application number
PCT/JP2019/043822
Other languages
English (en)
Japanese (ja)
Inventor
健人 小林
浩平 吉川
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2020105469A1 publication Critical patent/WO2020105469A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F37/00—Fixed inductances not covered by group H01F17/00

Definitions

  • Patent Document 1 discloses a coil, a magnetic core in which the coil is arranged, a case that houses a combination of the coil and the magnetic core, and a sealing that fills the case and seals at least a part of the combination.
  • a reactor including a resin portion is disclosed.
  • the stay is arranged on the upper surface of the outer core portion of the magnetic core exposed from the coil, and both ends of the stay are fixed to the mounting portions of the case with screws, whereby the combination can be fixed to the case. Have been described.
  • Patent Document 2 a reactor structure in which a frame-shaped insulator disposed between the coil and the outer core portion is provided with a hook-shaped convex portion, and a concave portion for catching the convex portion is provided on the bottom surface of the case.
  • the protrusion provided on the frame-shaped insulator of the reactor is fitted into the recess on the bottom surface of the case and hooked to prevent the reactor from falling out of the case.
  • an extending portion that is bifurcated and extends toward a corner portion of the case is integrally formed at an end face intervening portion that is interposed between the coil and the outer core portion, and a tip end portion thereof is formed. Describes a reactor having a fixing part. In the reactor described in Patent Document 3, the combination is fixed to the case by fastening the fixed portion of the end face intervening portion to the mounting portion of the case with a fastening member.
  • the reactor of the present disclosure is A coil having a pair of windings arranged in parallel, A magnetic core arranged inside and outside the winding portion, A pair of holding members arranged so as to face each end surface of the both winding portions, A case for accommodating a combination including the coil, the magnetic core and the holding member; A sealing resin portion filled in the case,
  • the case is A bottom plate on which the combination is placed, A side wall portion surrounding the periphery of the combination, Opposing the bottom plate portion, having a rectangular opening in plan view,
  • the combination is housed in the case so that the parallel direction of the winding parts is orthogonal to the bottom plate part,
  • Each of the holding members has a convex portion that projects from the facing surface that faces the bottom plate portion,
  • the bottom plate portion has a concave portion into which the convex portion fits, The convex portion is fitted into the concave portion while the stress due to the contraction of the case is applied.
  • FIG. 1 is a schematic partial cross-sectional view of the reactor of the first embodiment as seen from the front.
  • FIG. 2 is a schematic partial cross-sectional view of the reactor according to the first embodiment as viewed from the side surface.
  • FIG. 3 is a schematic exploded front view of the combined body.
  • FIG. 4 is a schematic bottom view of the holding member.
  • FIG. 5 is a schematic front view showing a state after the holding member is molded.
  • FIG. 6 is an explanatory diagram of a process of manufacturing the reactor of the first embodiment and shows a process of housing the combined product in a case.
  • FIG. 7: is explanatory drawing which shows the fitting state of the convex part and the concave part of the reactor which concerns on Embodiment 1 at normal temperature.
  • FIG. 8 is an explanatory diagram of a process of manufacturing the reactor according to the first embodiment, and illustrates a process of filling the case with the sealing resin portion.
  • an object of the present disclosure is to provide a reactor that is small in size, can be positioned so that the combination does not move with respect to the case, and can prevent the combination from falling out of the case.
  • the reactor according to the present disclosure is small in size, can be positioned so that the combined body does not move with respect to the case, and can prevent the combined body from falling out of the case.
  • the reactor according to the embodiment of the present disclosure is A coil having a pair of windings arranged in parallel, A magnetic core arranged inside and outside the winding portion, A pair of holding members arranged so as to face each end surface of the both winding portions, A case for accommodating a combination including the coil, the magnetic core and the holding member; A sealing resin portion filled in the case,
  • the case is A bottom plate on which the combination is placed, A side wall portion surrounding the periphery of the combination, Opposing the bottom plate portion, having a rectangular opening in plan view,
  • the combination is housed in the case so that the parallel direction of the winding parts is orthogonal to the bottom plate part,
  • Each of the holding members has a convex portion that projects from the facing surface that faces the bottom plate portion,
  • the bottom plate portion has a concave portion into which the convex portion fits, The convex portion is fitted into the concave portion while the stress due to the contraction of the case is applied.
  • the combination is fixed to the case by fitting the convex portion provided on the facing surface of each holding member facing the bottom plate portion of the case and the concave portion provided on the bottom plate portion. Therefore, in the reactor of the present disclosure, unlike the reactors described in Patent Documents 1 and 3, it is not necessary to provide a mounting portion for mounting the stay and a mounting portion for fastening the fixing portion of the end face intervening portion in the case. Therefore, in the reactor of the present disclosure, the case can be downsized, and in turn, the reactor can be downsized. In addition, in the reactor of the present disclosure, since the case is not provided with the attachment portion, the gap between the combination and the side wall portion of the case can be made smaller. Therefore, the heat of the combined body can be easily radiated to the case, and the heat radiation performance can be improved. Further, in the reactor of the present disclosure, since the stay can be omitted, the number of parts is small and the manufacturing cost can be reduced.
  • the combination is housed in the case so that the parallel directions of both winding parts of the coil are orthogonal to the bottom plate part of the case.
  • this arrangement form is referred to as a vertically stacked type.
  • the combination is housed in the case such that the parallel direction of both winding parts is parallel to the bottom plate part of the case.
  • this arrangement form is referred to as a flat type.
  • the reactor of the present disclosure can reduce the area of the bottom plate portion and can save the installation area. Further, in the case of the vertically stacked type, as compared with the flat type, it is possible to secure a large opposing area between both winding parts and the case, and the case can be efficiently used as a heat dissipation path. Therefore, the heat of the coil can be easily dissipated to the case, and the heat dissipation can be further improved.
  • the convex portion of each holding member is fitted into the concave portion of the bottom plate portion of the case in a state where stress due to contraction of the case is applied.
  • the convex portion is constrained by the concave portion, and the combined body can be fixed to the case. Therefore, the reactor of the present disclosure can position the combination so that the combination does not move with respect to the case by restraining the convex portion to the recess, and it is possible to prevent the combination from falling out of the case.
  • the combination is positioned so as not to move with respect to the case, so that the combination can be maintained at an appropriate position.
  • the shape of the convex portion viewed from the axial direction may be circular.
  • the shape of the convex portion is circular, it is easy to fit the convex portion into the concave portion.
  • the gate trace is provided on the convex portion, so that the electrical insulation of the holding member can be improved.
  • the holding member forming the combination may be formed by injection molding.
  • a gate is arranged at a position where a convex portion of the holding member is formed.
  • the packing density tends to be high in the part far from the gate and low in the part close to the gate, depending on the molding conditions.
  • the magnetic core has an inner core portion arranged inside each of the winding portions and a pair of outer core portions arranged outside of the winding portions, A mold resin portion covering at least a part of the outer peripheral surface of the outer core portion, The mold resin part may be interposed between the inner peripheral surface of the winding part and the inner core part.
  • the coil and the magnetic core can be integrated while integrally holding the inner core portion and the outer core portion. Therefore, the coil and the magnetic core can be handled as one body.
  • FIG. 1 The reactor 1A of the first embodiment will be described with reference to FIGS. 1 to 8. 1 and 2, the case 5 and the sealing resin portion 6 are shown in cross section in order to make the internal structure of the reactor 1A easy to understand.
  • the combination 10 in the case 5 shows the appearance as viewed from the front, and the case 5 and the sealing resin portion 6 show a cross section cut along a plane parallel to the front.
  • the combined body 10 in the case 5 shows the appearance as seen from the side surface, and the case 5 and the sealing resin portion 6 show a cross section cut along a plane parallel to the side surface.
  • the bottom plate portion 51 side of the case 5 is referred to as the bottom, and the side opposite to the bottom plate portion 51 side, that is, the opening 55 side is referred to as the top.
  • This vertical direction corresponds to the vertical direction on the paper surface of FIG.
  • the vertical direction is the depth direction of the case 5, in other words, the height direction.
  • the direction orthogonal to the height direction and along the long side of the case 5, that is, the left-right direction on the paper surface of FIG. 1 is defined as the length direction.
  • the direction orthogonal to the height direction and along the short side of the case 5, that is, the left-right direction on the paper surface of FIG. 2 is defined as the width direction.
  • the reactor 1A of the first embodiment includes a coil 2, a magnetic core 3, holding members 41 and 42, a case 5, and a sealing resin portion 6.
  • the coil 2 has a pair of winding parts 21 and 22 arrange
  • the magnetic core 3 has inner core portions 31 and 32 arranged inside the winding portions 21 and 22, and an outer core portion 33 arranged outside the winding portions 21 and 22.
  • the holding members 41 and 42 are arranged so as to face the respective end surfaces of the winding portions 21 and 22.
  • the case 5 houses the combination 10 including the coil 2, the magnetic core 3, and the holding members 41 and 42.
  • the combination 10 of this example includes the mold resin portion 8.
  • the sealing resin portion 6 is filled in the case 5.
  • each holding member 41, 42 has a convex portion 411, 421, and the bottom plate portion 51 of the case 5 is formed with a concave portion 511, 512 into which the convex portion 411, 421 fits. .. Then, the convex portions 411 and 421 are fitted into the concave portions 511 and 512 in a state where the stress due to the contraction of the case 5 is applied.
  • the configuration of the reactor 1A will be described in detail.
  • the coil 2 has a pair of winding parts 21 and 22, as shown in FIG.
  • the winding portions 21 and 22 are each formed by winding a winding in a spiral shape. Both winding portions 21 and 22 are arranged in parallel so that their axes are parallel to each other.
  • the axial directions of the winding parts 21 and 22 coincide with the length direction described above, that is, the left-right direction of the paper surface of FIG.
  • both winding parts 21 and 22 may be formed by one continuous winding, or each winding part 21 and 22 may be formed by winding separate windings.
  • both winding parts 21 and 22 are formed by one continuous winding, for example, after forming one winding part 21, the winding is bent and folded at the other end side, and the other winding part is formed. 22 may be formed.
  • each winding part 21 and 22 with a separate winding after forming each winding part 21 and 22 with a separate winding, the ends of the windings are connected to each other on the other end side of each winding part 21 and 22. Connection may be made by a joining method such as welding, pressure bonding, soldering, or brazing.
  • the ends of the windings on one end side of the winding parts 21 and 22 are drawn out of the case 5, and terminal fittings (not shown) are attached to the ends thereof.
  • An external device (not shown) such as a power supply is connected to the terminal fitting.
  • FIG. 1 only the winding portions 21 and 22 are shown, and the end portions of the winding and the like are omitted.
  • the winding may be a coated wire having a conductor wire and an insulating coating.
  • the constituent material of the conductor wire include copper.
  • the constituent material of the insulating coating include resins such as polyamide-imide.
  • the covered wire include a covered rectangular wire having a rectangular cross section and a covered round wire having a circular cross section.
  • Both winding parts 21 and 22 are composed of windings having the same specifications, and have the same shape, size, winding direction, and number of turns.
  • the winding portions 21 and 22 are square tube-shaped edgewise coils obtained by edgewise winding a coated rectangular wire.
  • the winding parts 21 and 22 have a rectangular tubular shape.
  • the shape of the winding portions 21 and 22 is not particularly limited, and may be, for example, a cylindrical shape, an elliptic cylindrical shape, an oblong cylindrical shape, or the like.
  • the specifications of the windings forming the winding portions 21 and 22 and the shapes and sizes of the winding portions 21 and 22 may be different.
  • the end faces of the winding parts 21 and 22 as viewed from the axial direction are rectangular. That is, the winding portions 21 and 22 have four flat surfaces and four corner portions. The corners of the winding parts 21 and 22 are rounded. Since the outer peripheral surfaces of the winding portions 21 and 22 are substantially flat surfaces, the winding portions 21 and 22 and the case 5 can be made to face each other. Therefore, it is easy to secure a large facing area between the winding portions 21 and 22 and the case 5. In addition, it is easy to uniformly reduce the distance between the winding parts 21 and 22 and the case 5.
  • the parallel direction of both winding parts 21 and 22 is orthogonal to the bottom plate part 51 of the case 5, and the axial direction of both winding parts 21 and 22 is the length of the case 5. It is arranged along the direction. That is, the both winding portions 21 and 22 are arranged so as to be stacked in the height direction of the case 5. In FIG. 1, one winding portion 21 is arranged on the bottom plate portion 51 side of the case 5, and the other winding portion 22 is arranged on the opening 55 side of the case 5.
  • the magnetic core 3 has inner core portions 31 and 32 and a pair of outer core portions 33.
  • the inner core portions 31 and 32 are arranged inside the winding portions 21 and 22, respectively.
  • the outer core portion 33 is arranged outside the winding portions 21 and 22.
  • the inner core portions 31 and 32 may have axial end portions protruding from the winding portions 21 and 22.
  • the outer core portion 33 is provided so as to connect the ends of the inner core portions 31 and 32 to each other.
  • the outer core portions 33 are arranged so as to sandwich the inner core portions 31 and 32 from both ends.
  • the magnetic core 3 shown in FIG. 1 is formed in an annular shape by connecting the respective end surfaces of the inner core portions 31 and 32 and the inner end surface 33e of the outer core portion 33 to each other. A magnetic flux flows through the magnetic core 3 when the coil 2 is excited to form a closed magnetic circuit.
  • the shapes of the inner core portions 31 and 32 are substantially corresponding to the inner peripheral shapes of the winding portions 21 and 22. There is a gap between the inner peripheral surfaces of the winding portions 21 and 22 and the outer peripheral surfaces of the inner core portions 31 and 32. The gap is filled with a resin that forms the mold resin portion 8 described later.
  • the shape of the inner core portions 31 and 32 is a quadrangular prism shape, specifically, a rectangular pillar shape.
  • the end surface shape of the inner core portions 31 and 32 as viewed in the axial direction is rectangular.
  • the corner portions of the inner core portions 31 and 32 are rounded along the corner portions of the winding portions 21 and 22.
  • the inner core portions 31 and 32 have the same shape and size.
  • both ends of the inner core portions 31 and 32 project from the end faces of the winding portions 21 and 22. Ends protruding from the winding portions 21 and 22 are also included in the inner core portions 31 and 32. Both ends of the inner core portions 31 and 32 protruding from the winding portions 21 and 22 are inserted into through holes 43 of holding members 41 and 42 described later, as shown in FIG.
  • each of the inner core portions 31 and 32 is composed of one columnar core piece.
  • Each core piece constituting the inner core portions 31 and 32 has a length substantially equal to the entire length of the winding portions 21 and 22 in the axial direction. That is, no gap material is provided on the inner core portions 31 and 32.
  • the inner core portions 31 and 32 may be composed of a plurality of core pieces and a gap material interposed between adjacent core pieces.
  • the shape of the outer core portion 33 is not particularly limited as long as it is a shape that connects the ends of the inner core portions 31 and 32 to each other. As shown in FIG. 3, the outer core portion 33 has an inner end surface 33e facing the respective end surfaces of the inner core portions 31 and 32. In this example, the outer core portion 33 has a rectangular parallelepiped shape. Both outer core portions 33 have the same shape and size. Each outer core portion 33 is composed of one columnar core piece.
  • the inner core portions 31 and 32 and the outer core portion 33 are formed of a molded body containing a soft magnetic material.
  • soft magnetic materials include metals such as iron and iron alloys and non-metals such as ferrite.
  • the iron alloy is, for example, an Fe-Si alloy or an Fe-Ni alloy.
  • the molded body containing the soft magnetic material include powder composed of the soft magnetic material, that is, a compacted body formed by compression molding the soft magnetic powder, and a composite material formed by dispersing the soft magnetic powder in a resin.
  • the composite material is obtained by filling a mold with a raw material obtained by mixing and dispersing soft magnetic powder in an unsolidified resin and curing the resin.
  • the compacted body has a higher proportion of the soft magnetic powder in the core piece than in the composite material. By adjusting the content of the soft magnetic powder in the resin, the composite material can easily control the magnetic characteristics such as relative permeability and saturation magnetic flux density.
  • Soft magnetic powder is an aggregate of soft magnetic particles.
  • the soft magnetic particles may be coated particles having an insulating coating on the surface thereof.
  • the constituent material of the insulating coating include phosphate.
  • the resin of the composite material is, for example, thermosetting resin such as epoxy resin, phenol resin, silicone resin, urethane resin, polyphenylene sulfide (PPS) resin, polyamide (PA) resin, liquid crystal polymer (LCP), polyimide (PI).
  • the resin include thermoplastic resins such as resins and fluororesins.
  • Examples of the PA resin include nylon 6, nylon 66, nylon 9T and the like.
  • the resin of the composite material may contain a filler. The heat dissipation of the composite material can be improved by containing the filler.
  • oxides such as alumina, silica and magnesium oxide, nitrides such as silicon nitride, aluminum nitride and boron nitride, and ceramics such as carbides such as silicon carbide and non-magnetic powders such as carbon nanotubes can be used.
  • the constituent material of the inner core portions 31 and 32 and the constituent material of the outer core portion 33 may be the same or different.
  • the inner core portions 31 and 32 and the outer core portion 33 may be made of a composite material, and the materials and the contents of the soft magnetic powders may be different.
  • the inner core portions 31 and 32 are made of a composite material.
  • the outer core portion 33 is composed of a powder compact. Further, the magnetic core 3 of this example does not have a gap material.
  • the holding members 41 and 42 are members that are arranged so as to face the respective end surfaces of the winding portions 21 and 22.
  • the holding members 41 and 42 of this example ensure electrical insulation between the coil 2 having the winding portions 21 and 22 and the magnetic core 3 having the inner core portions 31 and 32 and the outer core portion 33. Further, the holding members 41 and 42 hold the positioning state of the coil 2 and the magnetic core 3.
  • each holding member 41, 42 The basic structure of each holding member 41, 42 is the same.
  • the outer appearance of the holding members 41 and 42 as viewed from the side has a rectangular frame shape.
  • the outer peripheral surface of each holding member 41, 42 is substantially flat.
  • Each of the holding members 41 and 42 has a flat facing surface 45 that faces the bottom plate portion 51 of the case 5.
  • the holding members 41, 42 ensure electrical insulation between the winding parts 21, 22 and the outer core part 33. As shown in FIG. 3, the holding members 41 and 42 are interposed between the end surfaces of the winding portions 21 and 22 and the inner end surface 33e of the outer core portion 33.
  • a pair of through holes 43 is formed in each of the holding members 41 and 42. The ends of the inner core portions 31 and 32 are inserted into the respective through holes 43.
  • the shape of the through hole 43 is substantially corresponding to the outer peripheral shape of the end portions of the inner core portions 31 and 32.
  • the four corners of the through hole 43 are formed along the corners of the outer peripheral surfaces of the inner core portions 31 and 32.
  • the inner core portions 31 and 32 are held in the through hole 43 by the four corners of the through hole 43.
  • a gap is partially formed between the outer peripheral surface of the inner core portions 31 and 32 and the inner peripheral surface of the through hole 43 in a state where the end portions of the inner core portions 31 and 32 are inserted. It is provided to be done. This gap communicates with the gap between the inner peripheral surfaces of the winding portions 21 and 22 and the outer peripheral surfaces of the inner core portions 31 and 32.
  • Each of the holding members 41, 42 is formed so as to surround at least a part of the outer peripheral surface of the outer core portion 33, and a recess 44 is formed inside thereof. As shown in FIG. 3, the inner end surface 33e side of the outer core portion 33 is fitted into the recess 44. In this example, the recess 44 is provided so that a gap is partially formed between the outer peripheral surface of the outer core portion 33 and the inner peripheral surface of the recess 44 in a state where the outer core portion 33 is fitted. There is. As shown in FIG. 2, this gap is filled with a resin forming a mold resin portion 8 described later. Each outer core portion 33 and each holding member 41, 42 are integrated by the mold resin portion 8.
  • the holding members 41 and 42 of this example are configured such that the gap between the outer core portion 33 and the recess 44 and the gap between the inner core portions 31 and 32 and the through hole 43 described above communicate with each other. There is. By communicating these gaps, it is possible to introduce the resin forming the mold resin portion 8 between the winding portions 21 and 22 and the inner core portions 31 and 32 when forming the mold resin portion 8 described later. Is possible.
  • each holding member 41, 42 has an inner interposition part (not shown) protruding from the peripheral part of the through hole 43 toward the inside of the winding parts 21, 22.
  • the inner interposition part is inserted between the winding parts 21 and 22 and the inner core parts 31 and 32.
  • the inner interposition portion holds the winding portions 21 and 22 and the inner core portions 31 and 32 with a space therebetween, and secures electrical insulation between the winding portions 21 and 22 and the inner core portions 31 and 32. To do.
  • the inner core portions 31, 32 are positioned by inserting the respective end portions of the inner core portions 31, 32 into the through holes 43 of the holding members 41, 42 with respect to the holding members 41, 42. To be done. Further, as shown in FIG. 3, the outer core portion 33 is positioned by fitting the inner end surface 33e side of the outer core portion 33 into the recesses 44 of the holding members 41 and 42. Further, the winding portions 21 and 22 are positioned by the inner interposition portion. As a result, the holding members 41 and 42 hold the coil 2 having the winding portions 21 and 22 and the magnetic core 3 having the inner core portions 31 and 32 and the outer core portion 33 in a positioned state.
  • the holding members 41 and 42 have convex portions 411 and 421 protruding from the facing surface 45 that faces the bottom plate portion 51 of the case 5.
  • the respective convex portions 411, 421 are fitted into the respective concave portions 511, 512 formed on the bottom plate portion 51 of the case 5 described later.
  • each holding member 41, 42 at least one convex portion 411, 421 may be provided, and a plurality thereof may be provided.
  • the number of the convex portions 411 and 421 in each of the holding members 41 and 42 may be the same or different.
  • one convex portion 411, 421 is provided on the facing surface 45 of each holding member 41, 42, respectively.
  • the shapes of the convex portions 411 and 421 are not particularly limited.
  • the shape of the convex portions 411 and 421 viewed from the axial direction may be circular, elliptical, elliptical, polygonal, or the like.
  • the oval shape includes a so-called race track shape.
  • Examples of the polygonal shape include a triangular shape, a rectangular shape, a trapezoidal shape, and a hexagonal shape.
  • the shapes of the protrusions 411 and 421 may be the same or different. In this example, as shown in FIG. 4, each of the convex portions 411 and 421 has a circular shape.
  • the sizes of the convex portions 411 and 421 are set so that the convex portions 411 and 421 are not damaged when they are fitted into concave portions 511 and 512 formed in the bottom plate portion 51 of the case 5 described later.
  • the sizes of the protrusions 411 and 421 refer to the length and width of the protrusions 411 and 421.
  • the length of the convex portions 411 and 421 is indicated by L 4 .
  • the width of the convex portions 411 and 421 is indicated by W 4 .
  • the length and width of the protrusions 411 and 421 are, for example, 4 mm or more, and further 5 mm or more.
  • the size of the convex portions 411 and 421 is not particularly limited as long as it is equal to or smaller than the size of the facing surface 45.
  • the upper limit of the length and width of the convex portions 411 and 421 is, for example, 16 mm or less.
  • the heights of the convex portions 411 and 421 may be such that they can fit with the concave portions 511 and 512.
  • the height of the convex portions 411 and 421 is indicated by T 4 .
  • the height of the convex portions 411 and 421 is, for example, 0.5 mm or more, and further 0.6 mm or more.
  • the height of the convex portions 411 and 421 is not particularly limited as long as it is equal to or less than the thickness of the bottom plate portion 51, but is, for example, 4 mm or less, and further 2 mm or less.
  • the height of the protrusions 411 and 421 is equal to the length from the facing surface 45 to the tip along the axial direction.
  • the size and height of each convex portion 411, 421 may be the same or different.
  • the protrusions 411 and 421 have the same size and height. Specifically, the diameter of the circle when the protrusions 411 and 421 are viewed from the axial direction is 8 mm, and the height of the protrusions 411 and 421 is 1 mm.
  • the sizes of the convex portions 411 and 421 are uniform along the height direction, that is, the axial direction.
  • the holding members 41 and 42 are made of an electrically insulating material.
  • a resin is typically used as the electrically insulating material.
  • thermosetting resins such as epoxy resin, phenol resin, silicone resin, urethane resin, unsaturated polyester resin, PPS resin, PA resin, LCP, PI resin, fluororesin, polytetrafluoroethylene (PTFE)
  • the resin include thermoplastic resins such as resins, polybutylene terephthalate (PBT) resins, and acrylonitrile-butadiene-styrene (ABS) resins.
  • the resin forming the holding members 41, 42 may contain a filler.
  • the heat dissipation of the holding members 41 and 42 can be improved.
  • the filler the same fillers as those used for the composite material described above can be used.
  • the linear expansion coefficient of the holding members 41 and 42 is preferably larger than the linear expansion coefficient of the case 5 described later. This is because when the reactor 1A is used, the individual projections 411, 421 of the holding members 41, 42 fitted in the recesses 511, 512 of the bottom plate 51 are caused by the temperature rises of the combined body 10 and the case 5, respectively. This is to prevent it from coming out of 512.
  • the holding members 41 and 42 are made of PPS resin. The linear expansion coefficient of this PPS resin is about 49 ⁇ 10 ⁇ 6 / ° C.
  • the holding members 41 and 42 of this example are formed by injection molding.
  • the protrusions 411 and 421 are provided with the gate marks 46.
  • the gate mark 46 is shown by cross hatching.
  • the gate is arranged at a position where the convex portions 411 and 421 of the holding members 41 and 42 are formed.
  • burrs 47 that are continuous with the protrusions 411 and 421 are formed in the post-molding state of the holding members 41 and 42 molded using such a molding die. The burr 47 shown in FIG.
  • the holding members 41 and 42 are manufactured.
  • the gate traces 46 formed by removing the burrs 47 are provided on the end faces of the protrusions 411 and 421.
  • the gate traces 46 are provided on the convex portions 411 and 421, so that the reliability of the portions that come into contact with the winding portions 21 and 22 that require electrical insulation can be improved.
  • the packing density is high in the part far from the gate and low in the part close to the gate.
  • the mold resin portion 8 covers at least a part of the outer peripheral surface of the outer core portion 33, and is interposed between the inner peripheral surfaces of the winding portions 21 and 22 and the inner core portions 31 and 32. To be done.
  • the molding resin portion 8 integrally holds the inner core portions 31 and 32 and the outer core portion 33, and includes the coil 2 having the winding portions 21 and 22, the inner core portions 31 and 32, and the outer core portion 33.
  • the magnetic core 3 is integrated. Therefore, the coil 2 and the magnetic core 3 can be handled as one body. Further, the mold resin portion 8 integrates each outer core portion 33 and each holding member 41, 42.
  • the coil 2, the magnetic core 3, and the holding members 41 and 42 are integrated by the mold resin portion 8, and the combined body 10 can be handled as an integrated body.
  • the outer peripheral surfaces of the wound portions 21 and 22 are not covered with the mold resin portion 8 and are exposed from the mold resin portion 8.
  • the mold resin part 8 only needs to be able to integrally hold the inner core parts 31, 32 and the outer core part 33. Therefore, the mold resin portion 8 may be formed so as to cover at least the outer peripheral surfaces of the inner core portions 31 and 32 along the circumferential direction of the end portions. That is, the mold resin portion 8 does not have to extend to the central portion in the axial direction of the inner core portions 31 and 32. Considering the function of the mold resin portion 8 that integrally holds the inner core portions 31 and 32 and the outer core portion 33, the forming range of the mold resin portion 8 is sufficiently close to the end portions of the inner core portions 31 and 32. Is. Of course, the mold resin portion 8 may extend to the central portion in the axial direction of the inner core portions 31 and 32. In this case, the mold resin portion 8 covers the outer peripheral surfaces of the inner core portions 31 and 32 over the entire length and is formed from one outer core portion 33 to the other outer core portion 33.
  • the resin forming the mold resin portion 8 may be the same as the resin forming the holding members 41 and 42 described above.
  • the mold resin part 8 may contain the above-mentioned filler.
  • the mold resin portion 8 is made of PPS resin.
  • the case 5 accommodates the combined body 10 including the coil 2, the magnetic core 3, and the holding members 41 and 42.
  • the case 5 can protect the combination 10 mechanically and from the external environment.
  • the protection from the external environment improves the corrosion resistance of the combination 10.
  • the case 5 of this example is made of a metal material.
  • the metal case 5 has a higher thermal conductivity than the resin, and the heat of the combined body 10 is easily radiated to the outside via the case 5. Therefore, it contributes to the improvement of the heat dissipation of the combination 10.
  • the case 5 has a bottom plate portion 51, a side wall portion 52, and an opening portion 55.
  • the bottom plate portion 51 is a flat plate member on which the combined body 10 is placed.
  • the side wall portion 52 is a frame-shaped member that surrounds the periphery of the combined body 10.
  • the case 5 is a bottomed cylindrical container in which a storage space for the combined body 10 is formed by the bottom plate portion 51 and the side wall portion 52, and an opening 55 is formed on the side facing the bottom plate portion 51.
  • the bottom plate portion 51 and the side wall portion 52 are integrally formed.
  • the height of the side wall portion 52 that is, the height of the case 5 is higher than the height of the combined body 10.
  • the bottom plate portion 51 has a rectangular flat plate shape.
  • the side wall portion 52 has a rectangular frame shape.
  • the inner bottom surface of the bottom plate portion 51 on which the combined body 10 is placed and the inner peripheral surface of the side wall portion 52 are substantially flat.
  • the opening 55 has a rectangular shape in plan view when the case 5 is viewed from above.
  • the length of the case 5 is, for example, 80 mm or more and 120 mm or less, and further 90 mm or more and 115 mm or less.
  • the width of the case 5 is, for example, 40 mm or more and 80 mm or less, and further 55 mm or more and 70 mm or less.
  • the height of the case 5 is, for example, 80 mm or more and 150 mm or less, and further 90 mm or more and 135 mm or less.
  • the length of the case 5 refers to the length in the left-right direction of the paper surface of FIG.
  • the width of the case 5 refers to the length in the left-right direction of the paper surface of FIG.
  • the height of the case 5 refers to the length in the vertical direction of the paper surface of FIG.
  • the length is larger than the width and the height is larger than the width. That is, the area obtained by the length ⁇ width of the case 5 is smaller than the area obtained by the length ⁇ height of the case 5.
  • the area obtained by the length ⁇ width of the case 5 corresponds to the area of the bottom plate portion 51.
  • the above area obtained by the length ⁇ height of the case 5 corresponds to the area of the side wall portion 52 on the front or back side.
  • the combined body 10 is housed in the case 5 such that the parallel direction of the winding parts 21 and 22 is orthogonal to the bottom plate part 51. That is, the arrangement form of the combined body 10 is a vertically stacked type. In the combined body 10 shown in FIG. 1, the axial directions of the winding parts 21 and 22 are arranged along the length direction of the case 5. When the arrangement form of the combined body 10 is the vertically stacked type, the installation area of the combined body 10 with respect to the bottom plate portion 51 can be made smaller than that of the flat type. In the flat type, the combination is housed in the case such that the parallel direction of both winding parts is parallel to the bottom plate part.
  • the length of the combined body 10 along the direction orthogonal to both the parallel direction of the two winding parts 21 and 22 and the axial direction of the both winding parts 21 and 22 is equal to that of the two winding parts 21 and 22. Shorter than the length of the combination 10 along the parallel direction. That is, in the case of the vertically stacked type, since the width of the combined body 10 is smaller than that of the flat type, the installation area of the combined body 10 can be reduced. Therefore, when the arrangement of the combined body 10 is a vertically stacked type, the area of the bottom plate portion 51 is small, and the installation area of the reactor 1A can be saved.
  • the case 5 can be efficiently used as a heat dissipation path. Therefore, the heat of the coil 2 is easily dissipated to the case 5, and the heat dissipation of the combination 10 can be improved.
  • the distance between the combination 10 and the side wall portion 52 is, for example, 0.5 mm or more and 1 mm or less.
  • the distance between the combined body 10 and the side wall portion 52 here means the distance between the outer peripheral surfaces of the holding members 41 and 42 and the inner peripheral surface of the side wall portion 52. This is because the members closest to the side wall portion 52 in the combined body 10 are the holding members 41 and 42.
  • the distance is 0.5 mm or more, it is easy to fill the raw material resin, which will be the sealing resin portion 6 described later, between the combined body 10 and the side wall portion 52.
  • the distance when the distance is 1 mm or less, the case 5 can be downsized. Further, when the distance is 1 mm or less, the distance between the winding portions 21 and 22 and the side wall portion 52 can be reduced, and the heat dissipation of the combined body 10 can be improved.
  • the bottom plate portion 51 of the case 5 has concave portions 511 and 512 into which the convex portions 411 and 421 of the holding members 41 and 42 fit.
  • two recesses 511 and 512 are provided in the bottom plate portion 51 so as to correspond to the protrusions 411 and 421 of the holding members 41 and 42.
  • the shapes and sizes of the concave portions 511 and 512 are not particularly limited as long as the convex portions 411 and 421 can be fitted therein. Therefore, the opening shape of the concave portions 511 and 512 may be the same as or different from the shape of the convex portions 411 and 421. If the opening shape of the concave portions 511 and 512 is the same as the shape of the convex portions 411 and 421, the convex portions 411 and 421 and the concave portions 511 and 512 can be easily brought into close contact with each other. In other words, the convex portions 411 and 421 and the concave portions 511 and 512 easily come into surface contact with each other. In this example, the opening shape of the concave portions 511 and 512 is the same circular shape as the shape of the convex portions 411 and 421.
  • the depth of the concave portions 511 and 512 is not particularly limited as long as it is equal to or higher than the height of the convex portions 411 and 421. If the depths of the recesses 511, 512 are equal to or more than the heights of the protrusions 411, 421, when the combined body 10 is placed on the bottom plate portion 51, the facing surfaces 45 of the holding members 41, 42 are placed on the bottom plate portion 51. Can be contacted. Therefore, the combination 10 can be stably installed in the case 5.
  • the upper limit of the depth of the recesses 511 and 512 is equal to or less than the thickness of the bottom plate portion 51, for example, 4 mm or less, and further 2 mm or less.
  • the convex portions 411 and 421 are fitted into the concave portions 511 and 512 in a state where the stress due to the contraction of the case 5 is applied. Thereby, the convex portions 411 and 421 are constrained by the concave portions 511 and 512, and the combined body 10 can be fixed to the case 5.
  • the state in which the stress due to the contraction of the case 5 acts specifically means the state in which the stress that the bottom plate portion 51 tries to contract due to the thermal contraction acts.
  • the convex portions 411, 421 come into contact with the concave portions 511, 512, and the outer peripheral surfaces of the convex portions 411, 421 are pressed against the inner peripheral surfaces of the concave portions 511, 512, so that the convex portions 411, 421 become concave portions 511. , 512.
  • the case 5 is made of a non-magnetic metal material.
  • non-magnetic metals include aluminum and its alloys, magnesium and its alloys, copper and its alloys, silver and its alloys, and austenitic stainless steel. These metals have relatively high thermal conductivity. Therefore, the case 5 can be used as a heat dissipation path, and the heat of the combination 10 can be efficiently dissipated to the outside. Therefore, the heat dissipation of the combination 10 can be improved. Further, the higher the linear expansion coefficient of the case 5, the easier the stress due to the contraction of the case 5 described above. The linear expansion coefficient of Case 5 at 20 ° C. or higher and 200 ° C.
  • the case 5 is made of aluminum.
  • the coefficient of linear expansion of aluminum is about 24 ⁇ 10 ⁇ 6 / ° C.
  • the metal case 5 can be manufactured by die casting.
  • the recesses 511 and 512 of the bottom plate portion 51 can be easily formed by integrally molding during die casting.
  • the case 5 of this example is formed by die casting, and recesses 511 and 512 are integrally formed in the bottom plate portion 51 at the time of die casting.
  • the sealing resin portion 6 is filled in the case 5 and covers at least a part of the combined body 10.
  • the encapsulation resin part 6 can protect the combination 10 mechanically and from the external environment. The protection from the external environment improves the corrosion resistance of the combination 10.
  • the sealing resin portion 6 is filled up to the opening end of the case 5, and the entire combined body 10 is embedded in the sealing resin portion 6.
  • the sealing resin portion 6 is interposed between the coil 2 and the case 5.
  • the sealing resin portion 6 is interposed between the winding portions 21 and 22 and the side wall portion 52.
  • the resin of the sealing resin portion 6 examples include thermosetting resins such as epoxy resin, urethane resin, silicone resin and unsaturated polyester resin, and thermoplastic resins such as PPS resin.
  • the sealing resin portion 6 is made of epoxy resin. The higher the thermal conductivity of the sealing resin portion 6, the more preferable. This is because it is easy to transfer the heat of the coil 2 to the case 5.
  • the thermal conductivity of the sealing resin portion 6 is, for example, 1 W / m ⁇ K or more, more preferably 1.5 W / m ⁇ K or more, and particularly preferably 2 W / m ⁇ K or more.
  • the sealing resin part 6 may contain the above-mentioned filler.
  • an adhesive layer (not shown) may be provided between the combined body 10 and the bottom plate portion 51.
  • the combined layer 10 can be firmly fixed to the case 5 by the adhesive layer.
  • the adhesive layer may be formed between the one winding portion 21 and the bottom plate portion 51 of the combined body 10.
  • the adhesive layer may be made of an electrically insulating resin.
  • the electrically insulating resin forming the adhesive layer include thermosetting resins such as epoxy resin, silicone resin and unsaturated polyester resin, and thermoplastic resins such as PPS resin and LCP.
  • the adhesive layer may contain the filler described above.
  • the adhesive layer may be formed by using a commercially available adhesive sheet or applying a commercially available adhesive.
  • the reactor 1A can be manufactured by a manufacturing method including the following first to third steps. First step. Step of preparing combination 10 and case 5 Second step. Step of storing combination 10 in case 5 Third step. Step of forming the sealing resin portion 6 in the case 5
  • the combination 10 and the case 5 are prepared.
  • the combined body 10 is manufactured by assembling the coil 2, the magnetic core 3, and the holding members 41 and 42.
  • the mold resin portion 8 is formed, and the coil 2, the magnetic core 3 and the holding members 41 and 42 are integrated by the mold resin portion 8.
  • the mold resin portion 8 is formed so as to cover the outer peripheral surface of the outer core portion 33 while the positioning state of the coil 2 and the magnetic core 3 is held by the holding members 41 and 42.
  • a part of the resin forming the mold resin portion 8 has a gap between the outer core portion 33 and the concave portion 44 and a gap between the inner core portions 31 and 32 and the through hole 43. And the space between the winding portions 21 and 22 and the inner core portions 31 and 32. Therefore, the mold resin portion 8 is formed so as to be interposed between the winding portions 21 and 22 and the inner core portions 31 and 32.
  • the size of the recesses 511, 512 of the bottom plate 51 is smaller than the size of the projections 411, 421 of the holding members 41, 42 at room temperature.
  • the normal temperature here means a range of 25 ° C. ⁇ 5 ° C.
  • S 5 indicates the size, specifically the length, of the recesses 511 and 512 at room temperature.
  • L 4 indicates the size, specifically, the length of the convex portions 411 and 421 at room temperature.
  • the distance between the recesses 511 and 512 of the bottom plate portion 51 is smaller than the distance between the protrusions 411 and 421 of the holding members 41 and 42.
  • D 5 indicates the distance between the concave portions 511 and 512 at room temperature.
  • D 4 indicates the distance between the convex portions 411 and 421 at room temperature.
  • the interval between the recesses 511 and 512 is based on the center of the bottom plate portion 51 in the lengthwise direction when the side closer to the center is the inner side and the opposite side, that is, the side farther from the center is the outer side. 512, the distance between the outer sides.
  • the interval between the convex portions 411 and 421 of each holding member 41 and 42 is the combination 10 and more specifically, the center in the length direction of the winding portions 21 and 22 is the reference, and the side close to the center is the inside.
  • the case 5 is made of aluminum, and the holding members 41, 42 are made of PPS resin.
  • the linear expansion coefficient of the holding members 41 and 42 is larger than the linear expansion coefficient of the case 5.
  • the linear expansion coefficient of the PPS resin, which is a constituent material of the holding members 41 and 42, is about 49 ⁇ 10 ⁇ 6 / ° C.
  • the linear expansion coefficient of aluminum, which is the constituent material of the case 5, is about 24 ⁇ 10 ⁇ 6 / ° C.
  • the combination 10 is stored in the case 5.
  • the convex portions 411 and 421 of the holding members 41 and 42 are fitted into the concave portions 511 and 512 of the bottom plate portion 51 by shrink fitting.
  • the protrusions 411 and 421 of the holding members 41 and 42 are aligned with the recesses 511 and 512 of the bottom plate 51. Fit in.
  • the combination body 10 is not heated and is kept at room temperature. The size of the recesses 511 and 512 during heating becomes larger than that at room temperature due to thermal expansion of the bottom plate portion 51 of the case 5.
  • S 50 indicates the size, specifically, the length of the recesses 511 and 512 during heating. That is, at the time of heating, S 50 > S 5 is satisfied.
  • the size of the concave portions 511 and 512 at the time of heating is set to be larger than the size of the convex portions 411 and 421. That is, S 50 > L 4 is satisfied.
  • the gap between the concave portions 511 and 512 becomes wider than that at the normal temperature, and becomes equal to or larger than the gap between the convex portions 411 and 421. That is, as shown in FIG.
  • the heating temperature of the case 5 may be, for example, 60 ° C. or higher and 100 ° C. or lower. In this example, the heating temperature of the case 5 is 80 ° C.
  • FIG. 7 shows a fitting state of the convex portions 411 and 421 and the concave portions 511 and 512 at room temperature.
  • the outside of the convex portions 411 and 421, that is, the left side of the convex portion 411 in FIG. 7 and the right side of the convex portion 421 are pressed to the outside of the concave portions 511 and 512, that is, the left side of the concave portion 511 and the right side of the concave portion 512 in FIG. ..
  • the convex portions 411 and 421 are restrained by the concave portions 511 and 512, and the combined body 10 is fixed to the case 5.
  • the sealing resin portion 6 is formed inside the case 5. Specifically, as shown in FIG. 8, in a state where the combination body 10 is housed in the case 5, the raw material resin 60 to be the sealing resin portion 6 shown in FIG. 1 is filled to form the sealing resin portion 6. .. To fill the raw material resin 60, as shown in FIG. 8, the injection nozzle 65 is inserted into the gap between the combined body 10 and the side wall portion 52, and the molten raw material resin 60 is injected from the injection nozzle 65. For filling the raw material resin 60, it is preferable that the case 5 accommodating the combination 10 is placed in a vacuum tank and the raw material resin 60 is injected in a vacuum state. Thereby, it is possible to suppress the occurrence of voids in the sealing resin portion 6.
  • the position of the combination body 10 may shift when the raw material resin 60 is filled. Can be prevented.
  • the raw material resin 60 is filled in the case 5, the raw material resin 60 is solidified to form the sealing resin portion 6 as shown in FIG.
  • the raw material resin 60 may be solidified under appropriate conditions.
  • the case 5 is placed in a heating furnace and heated at 120 ° C. for 2 hours. After the raw material resin 60 is solidified, it is cooled to room temperature.
  • the reactor 1A can be manufactured as described above. At room temperature of the reactor 1A, as described above with reference to FIG. 7, the convex portions 411, 421 are fitted into the concave portions 511, 512 while the stress due to the contraction of the case 5, specifically, the bottom plate portion 51 is applied. ing. In the reactor 1A, whether or not the convex portions 411, 421 are fitted in the concave portions 511, 512 while the stress due to the contraction of the bottom plate portion 51 of the case 5 is applied can be determined as follows. First, the sealing resin portion 6 is removed. The sealing resin portion 6 can be removed by dissolving only the sealing resin portion 6 with a solvent. With the sealing resin portion 6 not present, the case 5 is fixed and the combined body 10 is pulled.
  • the temperature may rise to about 180 ° C.
  • both the convex portions 411 and 421 and the concave portions 511 and 512 thermally expand.
  • the linear expansion coefficient of the holding members 41 and 42 is larger than that of the case 5. Therefore, during use, the convex portions 411 and 421 also thermally expand following the thermal expansion of the concave portions 511 and 512. Therefore, during use, the state in which the convex portions 411 and 421 are tightened in the concave portions 511 and 512 can be maintained. That is, the individual convex portions 411 and 421 do not come out of the concave portions 511 and 512.
  • the holding members 41, 42 provided with the protrusions 411, 421 are provided.
  • the space is about to expand.
  • the distance between the holding members 41 and 42 mainly depends on the linear expansion coefficient of the inner core portions 31 and 32.
  • the distance between the concave portions 511 and 512 may be wider than the distance between the convex portions 411 and 421, or the distance between the convex portions 411 and 421 may be larger than the distance between the concave portions 511 and 512. Attempts to spread can occur.
  • the combination 10 is fixed to the case 5 by fitting the convex portions 411, 421 of the holding members 41, 42 and the concave portions 511, 512 of the bottom plate portion 51 of the case 5. Therefore, in the reactor 1A, it is not necessary to provide the case 5 with a mounting portion for mounting a stay or the like. Therefore, the case 5 can be downsized, and the reactor 1A can be downsized. In addition, since the case 5 is not provided with the mounting portion, the gap between the combined body 10 and the side wall portion 52 of the case 5 can be reduced. Therefore, the heat of the combination 10 is easily radiated to the case 5, and the heat dissipation of the combination 10 can be improved. Therefore, the reactor 1A is also excellent in heat dissipation. Further, in the reactor 1A, the stay can be omitted, so that the number of parts can be reduced and the manufacturing cost can be reduced.
  • the installation area of the combined body 10 can be reduced. Therefore, the area of the bottom plate portion 51 of the case 5 can be reduced, and the installation area of the reactor 1A can be saved.
  • the convex portions 411, 421 of the holding members 41, 42 are fitted into the concave portions 511, 512 of the bottom plate portion 51 in a state where the stress due to the contraction of the case 5, specifically, the bottom plate portion 51 is applied. There is. As a result, the convex portions 411, 421 are constrained by the concave portions 511, 512, the combined body 10 can be positioned so as not to move with respect to the case 5, and the combined body 10 can be prevented from falling out of the case 5. In the reactor 1A, the combined body 10 is positioned so as not to move with respect to the case 5, so that the combined body 10 can be maintained at an appropriate position.
  • the reactor 1A can be used as a component of a circuit that performs a voltage boosting operation or a voltage dropping operation.
  • the reactor 1A can be used as, for example, various converters, components of power conversion devices, and the like.
  • Examples of the converter include an in-vehicle converter mounted on a vehicle such as a hybrid vehicle, a plug-in hybrid vehicle, an electric vehicle, and a fuel cell vehicle, typically a DC-DC converter, an air conditioner converter, and the like.
  • the reactor 1A may be installed so that the opening 55 of the case 5 faces downward, for example.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

La présente invention concerne un réacteur pourvu : d'une bobine ayant une paire de parties d'enroulement disposées en parallèle ; de noyaux magnétiques agencés à l'intérieur et à l'extérieur des parties d'enroulement ; d'une paire d'éléments de maintien agencés de façon à s'opposer aux surfaces d'extrémité respectives des parties d'enroulement ; d'un boîtier pour stocker un ensemble comprenant la bobine, les noyaux magnétiques et les éléments de maintien ; et d'une partie de résine d'étanchéité avec laquelle le boîtier est rempli. Le boîtier a une partie de plaque inférieure, une partie de paroi latérale et une partie d'ouverture ayant une forme rectangulaire dans une vue en plan, l'ensemble est stocké dans le boîtier de telle sorte que la direction parallèle des parties d'enroulement est orthogonale à la partie de plaque inférieure, chacun des éléments de maintien a une partie saillante qui fait saillie à partir d'une surface opposée opposée à la partie de plaque inférieure, la partie de plaque inférieure a une partie en creux dans laquelle la partie saillante s'ajuste, et la partie saillante est ajustée dans la partie évidée dans un état dans lequel une contrainte due à la contraction du boîtier agit.
PCT/JP2019/043822 2018-11-19 2019-11-08 Réacteur WO2020105469A1 (fr)

Applications Claiming Priority (2)

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JP2018216887A JP2020088046A (ja) 2018-11-19 2018-11-19 リアクトル
JP2018-216887 2018-11-19

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WO2020105469A1 true WO2020105469A1 (fr) 2020-05-28

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005183885A (ja) * 2003-12-24 2005-07-07 Concorde Denshi Kogyo:Kk リアクトル
JP2006147853A (ja) * 2004-11-19 2006-06-08 Fuji Koki Corp 電磁弁
JP2008198981A (ja) * 2007-01-18 2008-08-28 Denso Corp 電力変換装置及びその製造方法
JP2010021448A (ja) * 2008-07-11 2010-01-28 Sumitomo Electric Ind Ltd リアクトル構造体
JP2017028142A (ja) * 2015-07-24 2017-02-02 株式会社オートネットワーク技術研究所 リアクトル、およびリアクトルの製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005183885A (ja) * 2003-12-24 2005-07-07 Concorde Denshi Kogyo:Kk リアクトル
JP2006147853A (ja) * 2004-11-19 2006-06-08 Fuji Koki Corp 電磁弁
JP2008198981A (ja) * 2007-01-18 2008-08-28 Denso Corp 電力変換装置及びその製造方法
JP2010021448A (ja) * 2008-07-11 2010-01-28 Sumitomo Electric Ind Ltd リアクトル構造体
JP2017028142A (ja) * 2015-07-24 2017-02-02 株式会社オートネットワーク技術研究所 リアクトル、およびリアクトルの製造方法

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