WO2015159673A1 - Dispositif électronique - Google Patents

Dispositif électronique Download PDF

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Publication number
WO2015159673A1
WO2015159673A1 PCT/JP2015/059143 JP2015059143W WO2015159673A1 WO 2015159673 A1 WO2015159673 A1 WO 2015159673A1 JP 2015059143 W JP2015059143 W JP 2015059143W WO 2015159673 A1 WO2015159673 A1 WO 2015159673A1
Authority
WO
WIPO (PCT)
Prior art keywords
core
resin
case
spacer
coils
Prior art date
Application number
PCT/JP2015/059143
Other languages
English (en)
Japanese (ja)
Inventor
辰哉 上松
Original Assignee
株式会社 豊田自動織機
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 豊田自動織機 filed Critical 株式会社 豊田自動織機
Publication of WO2015159673A1 publication Critical patent/WO2015159673A1/fr

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Classifications

    • 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
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • 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

  • an induction device such as a reactor or a transformer having a core having a plurality of legs and a plurality of coils wound respectively on the legs and an induction device housed inside and filled with a resin
  • the present invention relates to an electronic device provided with a case.
  • the electronic device described in Patent Document 1 includes a core having a plurality of legs, and a plurality of induction devices such as a reactor and a transformer each having a plurality of coils wound around each leg, and a metal for housing the induction device It is equipped with a case made of The induction device is fixed to the case by a resin (potting resin) filled in the case. And while insulation with each coil and a case is ensured by resin, the heat from induction apparatus is thermally radiated to a case through resin, and the temperature rise of an induction apparatus is suppressed.
  • potting resin potting resin
  • An object of the present invention is to provide an electronic device capable of reducing the amount of resin filled in a case.
  • An electronic device to solve the above problems includes: a core having a plurality of legs; and an induction device having a plurality of coils wound around the legs, a case for accommodating the induction device, and filling the case And a resin spacer disposed in a gap between the coils adjacent to each other in the radial direction.
  • the disassembled perspective view which shows the reactor apparatus in 1st Embodiment.
  • the longitudinal cross-sectional view of the induction instrument of FIG. FIG. 3 is an exploded perspective view of the induction device of FIG. 2;
  • FIG. 2 is a cross-sectional plan view of the induction device of FIG. 1;
  • the longitudinal cross-sectional view of the electronic device containing the induction apparatus of FIG. The disassembled perspective view of the guidance apparatus in 2nd Embodiment.
  • the disassembled perspective view of the guidance instrument in 3rd Embodiment.
  • the reactor device 10 includes an induction device 11 and a case 12 for housing the induction device 11.
  • the induction device 11 has two cores, ie, a first core 21 and a second core 22, and two coils, ie, a first coil 31 and a second coil 32.
  • the case 12 has a bottomed elliptical cylindrical shape and is made of metal (made of aluminum in the present embodiment).
  • the induction device 11 is housed in the case 12 such that the first core 21 is located between the second core 22 and the bottom of the case 12.
  • the first core 21 and the second core 22 are U-shaped cores.
  • the first core 21 and the second core 22 are magnetic members and are formed of dust cores.
  • the first core 21 includes a flat plate portion 21 a having a substantially rectangular flat plate shape and a plurality of leg portions. The plurality of leg portions extend from the other end of the flat plate portion 21 a toward the second core 22 from a cylindrical first leg portion 21 b extending toward the second core 22 from one end in the longitudinal direction of the flat plate portion 21 a. And an extending cylindrical second leg 21c.
  • the first core 21 has first side surfaces 21 d located at both ends in the longitudinal direction of the flat plate portion 21 a and second side surfaces 21 f located at both ends in the lateral direction of the flat portion 21 a.
  • the pair of second side surfaces 21 f extend in parallel to each other along the longitudinal direction of the flat plate portion 21 a.
  • Each first side surface 21d is connected to the pair of second side surfaces 21f, and bulges out gradually from the pair of second side surfaces 21f in the longitudinal direction of the flat plate portion 21a.
  • the second core 22 includes a flat plate portion 22 a having a substantially rectangular flat plate shape and a plurality of leg portions.
  • the plurality of leg portions extend from the other end of the flat plate portion 22 a toward the first core 21 from the other end in the longitudinal direction of the flat plate portion 22 a, and toward the first core 21.
  • an extending cylindrical second leg 22c is also included.
  • the second core 22 has first side surfaces 22d located at both ends in the longitudinal direction of the flat plate portion 22a and second side surfaces 22f located at both ends in the lateral direction of the flat portion 22a.
  • the pair of second side surfaces 22f extend in parallel to each other along the longitudinal direction of the flat plate portion 22a.
  • Each first side face 22d is connected to the pair of second side faces 22f and bulges away from the pair of second side faces 22f in the longitudinal direction of the flat plate portion 22a.
  • the first core 21 has the same shape as the second core 22. Further, in the first and second cores 21 and 22, the end faces in the extending direction of the first legs 21b and 22b face each other, and the end faces in the extending direction of the second legs 21c and 22c face each other It is arranged to be.
  • a gap plate 13 is interposed between the end surfaces of the first legs 21b and 22b and between the end surfaces of the second legs 21c and 22c.
  • Each gap plate 13 is a nonmagnetic material (for example, ceramic), and is formed in a disk shape having the same outer diameter as the first legs 21b and 22b and the second legs 21c and 22c.
  • the gap plate 13 forms a gap between the end faces of the first legs 21b and 22b and between the end faces of the second legs 21c and 22c.
  • a first bobbin 41 as a bobbin is attached to the first core 21, and a second bobbin 42 as a bobbin is attached to the second core 22.
  • the first bobbin 41 and the second bobbin 42 are made of resin.
  • the first bobbin 41 and the second bobbin 42 are formed of polyphenylene sulfide resin (PPS resin).
  • the first bobbin 41 has a flat plate portion 41a, a cylindrical first cylindrical portion 41b projecting from the flat plate portion 41a, and a cylindrical second cylindrical portion 41c projecting from the flat plate portion 41a.
  • the first leg portion 21b of the first core 21 is inserted into the first cylindrical portion 41b, and the second leg portion 21c of the first core 21 is inserted into the second cylindrical portion 41c.
  • the second bobbin 42 has a flat plate portion 42a, a cylindrical first cylindrical portion 42b projecting from the flat plate portion 42a, and a cylindrical second cylindrical portion 42c projecting from the flat plate portion 42a.
  • the first leg 22b of the second core 22 is inserted into the first tubular portion 42b, and the second leg 22c of the second core 22 is inserted into the second tubular portion.
  • the flat plate portion 41 a of the first bobbin 41 has the same outer shape as the flat plate portion 42 a of the second bobbin 42.
  • the first coil 31 has an annular shape, and is wound around the first cylindrical portions 41b and 42b into which the first legs 21b and 22b are inserted.
  • the second coil 32 has an annular shape, and is wound around the second cylindrical portions 41c and 42c into which the second legs 21c and 22c are inserted.
  • the first and second coils 31 and 32 are formed by edgewise bending a single conductive plate, and the tip of the first coil 31 is the tip of the second coil 32 and the connecting portion 33.
  • the first coil 31 wound on the first legs 21b and 22b that is, the first cylindrical portions 41b and 42b
  • the second legs 21c and 22c that is, the second cylindrical portions 41c and 42c
  • the second coil 32 and the coiled second coil 32 are disposed radially adjacent to each other, and a connecting portion 33 is provided in a gap between the coils 31 and 32.
  • the winding direction of the first coil 31 is different from the winding direction of the second coil 32.
  • the first and second coils 31 and 32 may be integrally formed by edgewise bending a single conductive plate.
  • the pair of spacers 51 having a substantially trapezoidal shape in plan view are integrated with the first bobbin 41 so that they project from the flat plate portion 41 a of the first bobbin 41 in the thickness direction of the flat plate portion 41 a. Are formed.
  • Each spacer 51 is disposed in a gap between the first coil 31 and the second coil 32.
  • the spacer 51 is made of resin.
  • the spacer 51 is formed of polyphenylene sulfide resin (PPS resin) which is the same material as the first and second bobbins 41 and 42.
  • Each spacer 51 extends from the side edge extending in the longitudinal direction of the flat plate portion 41a in a direction perpendicular to the upper surface of the flat plate portion 41a, that is, the lower bottom portion 51a extending in the thickness direction of the flat plate portion 41a And an upper bottom portion 51b extending in the thickness direction of the flat plate portion 41a.
  • Each spacer 51 has a pair of curved portions 51c extending so as to curve in an arc from both side edges of the lower bottom portion 51a in the longitudinal direction to both side edges of the upper bottom portion 51b in the longitudinal direction.
  • the curved portion 51 c extends along the outer peripheral surfaces of the first coil 31 and the second coil 32, and contacts the outer peripheral surfaces of the first coil 31 and the second coil 32.
  • each spacer 51 has an extending portion 51 d which is continuous with the lower bottom portion 51 a, the upper bottom portion 51 b and the pair of curved portions 51 c and extends along the flat plate portion 42 a of the second bobbin 42.
  • Each extending portion 51 d contacts the flat plate portion 42 a of the second bobbin 42.
  • the upper bottom portions 51b of the spacer 51 are disposed to face each other, and a space 33k in which the connecting portion 33 is disposed is formed between the upper bottom portions 51b.
  • the case 12 has an inner circumferential surface 12 a formed along the outer shape of the induction device 11. Specifically, the inner circumferential surface 12 a of the case 12 is formed along the outer shape of the flat plate portions 41 a and 42 a of the first and second bobbins 41 and 42.
  • a part of the induction device 11 is covered by a resin 29 filled in the case 12.
  • the resin 29 is made of a resin (for example, epoxy resin) different from the first bobbin 41 and the second bobbin 42.
  • the resin 29 ensures insulation between the coils 31 and 32 and the case 12.
  • the induction device 11 is thermally coupled to the case 12 via the resin 29. Then, the heat from the induction device 11 is dissipated to the case 12 through the resin 29.
  • the first coil 31 wound around the first legs 21 b and 22 b and the second coil 32 wound around the second legs 21 c and 22 c are disposed adjacent to each other in the radial direction.
  • Each spacer 51 is disposed in a gap between the first coil 31 and the second coil 32. Therefore, it is not necessary to fill the gap between the adjacent first and second coils 31 and 32 with the resin 29 filled in the case 12. As a result, the amount of the resin 29 filled in the case 12 is smaller than in the case where the spacer 51 is not present in the gap between the adjacent first and second coils 31 and 32.
  • a part of the first coil 31 and a part of the second coil 32 are in contact with the pair of spacers 51, that is, each spacer 51 is in contact with a part of the coils 31 and 32 adjacent to the spacer 51. Therefore, the heat generated from the first and second coils 31 and 32 is transmitted to the first core 21 through the spacers 51. Then, the heat transmitted to the first core 21 is dissipated to the case 12, whereby the temperature rise of the induction device 11 is suppressed.
  • the spacer 51 is disposed in the gap between the first coil 31 and the second coil 32. According to this, when the resin 29 is filled in the case 12, it is not necessary to fill the gap between the adjacent first and second coils 31 and 32 with the resin 29. Therefore, the amount of the resin 29 filled in the case 12 can be reduced as compared with the case where the spacer 51 is not present in the gap between the adjacent first and second coils 31 and 32. Since the material cost of the resin 29 is high with respect to the material cost of the spacer 51, the material cost can be suppressed by reducing the weight of the resin 29. Further, since the time until the resin 29 is filled in the gap can be reduced, the manufacturing cost can be suppressed.
  • Each spacer 51 is integrally formed on the first bobbin 41. According to this, when the first bobbin 41 is molded, the respective spacers 51 can be molded simultaneously with the first bobbin 41, so that the reactor device 10 can be easily manufactured.
  • the inner circumferential surface 12 a of the case 12 is formed along the outer shape of the induction device 11. According to this, the gap between the case 12 and the induction device 11 can be reduced, and the amount of the resin 29 filled in the case 12 can be reduced.
  • the pair of spacers 51 may be integrally formed with the first core 21 so as to protrude from the first core 21 in the thickness direction.
  • each spacer 51 can be simultaneously molded with the first core 21 by using two kinds of materials of magnetic powder mixed resin and resin, so that the reactor device 10 can be easily manufactured. it can.
  • the flat plate portion 41 a of the first bobbin 41 is formed with a notch 41 k along the outer shape of the corresponding spacer 51.
  • the first bobbin 41, the second bobbin 42, the first core 21 and the second core 22 are separated between the adjacent first and second coils 31, 32.
  • the first bobbin 41, the second bobbin 42, the first core 21, and the second core are disposed in the entire gap between the adjacent first and second coils 31, 32.
  • One spacer 51 separate from 22 may be disposed.
  • the spacer 51 may further have a lower bottom 51a instead of the upper bottom 51b.
  • a recess 33a having a shape corresponding to the connecting portion 33 needs to be formed in a portion overlapping with the connecting portion 33.
  • the number of the spacers 51 may not be two, and may be at least one.
  • the first core 21 may have a shape different from that of the second core 22.
  • the first coil 31 and the second coil 32 may have an elliptical ring shape or a square ring shape.
  • the induction device 11 may have the first coil 31 and the second coil 32 wound around one core.
  • the induction device 11 may have three or more cores. In each of the above embodiments, the induction device 11 may have three or more coils.
  • the case 12 may have, for example, a bottomed square box shape.
  • the resin 29 may be a urethane resin or a silicone resin.
  • the first bobbin 41 and the second bobbin 42 may be formed of a resin other than polyphenylene sulfide resin (PPS resin).
  • the first coil 31 and the second coil 32 may be wound round wires.
  • the resin 29 may cover the entire induction device 11.
  • the induction device 11 may be a device other than a reactor (for example, a transformer).

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)

Abstract

L'invention concerne un dispositif électronique qui comprend un dispositif inductif, un boîtier et un élément d'espacement. Le dispositif inductif comprend un noyau et une pluralité de bobines. Le noyau comporte une pluralité de pattes autour desquelles sont enroulées les bobines respectives. Le boîtier contient le dispositif inductif et est rempli d'une résine. L'élément d'espacement comprend une résine et est positionné dans un espace formé entre des bobines radialement adjacentes.
PCT/JP2015/059143 2014-04-16 2015-03-25 Dispositif électronique WO2015159673A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-084874 2014-04-16
JP2014084874A JP5835396B2 (ja) 2014-04-16 2014-04-16 電子機器

Publications (1)

Publication Number Publication Date
WO2015159673A1 true WO2015159673A1 (fr) 2015-10-22

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Application Number Title Priority Date Filing Date
PCT/JP2015/059143 WO2015159673A1 (fr) 2014-04-16 2015-03-25 Dispositif électronique

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JP (1) JP5835396B2 (fr)
TW (1) TW201603062A (fr)
WO (1) WO2015159673A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108370176B (zh) * 2015-12-16 2021-02-09 三菱电机株式会社 定子、定子的制造方法、电动机及空调装置
JP2017139397A (ja) * 2016-02-05 2017-08-10 スミダコーポレーション株式会社 磁性部品
JP7482639B2 (ja) 2020-02-03 2024-05-14 ダイヤゼブラ電機株式会社 リアクトル及びリアクトル用のボビン

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007108201A1 (fr) * 2006-03-17 2007-09-27 Tamura Corporation Element et structure destines a fixer un noyau
JP2009099596A (ja) * 2007-10-12 2009-05-07 Sumitomo Electric Ind Ltd リアクトルおよびその製造方法
JP2009246220A (ja) * 2008-03-31 2009-10-22 Sumitomo Electric Ind Ltd リアクトルおよびリアクトル用ボビン
WO2014045868A1 (fr) * 2012-09-24 2014-03-27 住友電気工業株式会社 Réacteur, convertisseur, dispositif de conversion de puissance et procédé de fabrication de réacteur

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6050024B2 (ja) * 2012-04-27 2016-12-21 Ｎｅｃトーキン株式会社 リアクトル
JP2014067758A (ja) * 2012-09-24 2014-04-17 Sumitomo Electric Ind Ltd リアクトル、コンバータ、及び電力変換装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007108201A1 (fr) * 2006-03-17 2007-09-27 Tamura Corporation Element et structure destines a fixer un noyau
JP2009099596A (ja) * 2007-10-12 2009-05-07 Sumitomo Electric Ind Ltd リアクトルおよびその製造方法
JP2009246220A (ja) * 2008-03-31 2009-10-22 Sumitomo Electric Ind Ltd リアクトルおよびリアクトル用ボビン
WO2014045868A1 (fr) * 2012-09-24 2014-03-27 住友電気工業株式会社 Réacteur, convertisseur, dispositif de conversion de puissance et procédé de fabrication de réacteur

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JP2015204448A (ja) 2015-11-16
JP5835396B2 (ja) 2015-12-24
TW201603062A (zh) 2016-01-16

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