JP2015026867A - Induction apparatus - Google Patents

Induction apparatus Download PDF

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JP2015026867A
JP2015026867A JP2014222743A JP2014222743A JP2015026867A JP 2015026867 A JP2015026867 A JP 2015026867A JP 2014222743 A JP2014222743 A JP 2014222743A JP 2014222743 A JP2014222743 A JP 2014222743A JP 2015026867 A JP2015026867 A JP 2015026867A
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core
housing
coil
type core
substrate
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セルゲイ モイセエフ
Serguei Moisseev
セルゲイ モイセエフ
靖弘 小池
Yasuhiro Koike
靖弘 小池
裕明 浅野
Hiroaki Asano
裕明 浅野
公教 尾崎
Kiminori Ozaki
公教 尾崎
津坂 昌功
Masanori Tsusaka
昌功 津坂
慎平 迫田
Shinpei Sakota
慎平 迫田
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Toyota Industries Corp
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Toyota Industries Corp
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Priority to JP2014222743A priority Critical patent/JP2015026867A/en
Publication of JP2015026867A publication Critical patent/JP2015026867A/en
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Abstract

PROBLEM TO BE SOLVED: To provide an induction apparatus which makes stress due to a difference in linear expansion coefficients of a coil and a coil holder less likely to be applied to the core and the coil holder.SOLUTION: A transformer 10 includes: a housing 20; coils C1, C2 disposed in the housing 20 and held by an insulation substrate 33; and a core 40 disposed in the housing 20 and having portions around which the coils C1 and C2 are wound. The core 40 and the insulation substrate 33 are separately fixed to the housing 20. Copper plates 31, 32 are bonded to both surfaces of the insulation substrate 33, and the primary coil C1 composed of the copper plate 31 and the secondary coil C2 composed of the copper plate 32 are held therein.

Description

本発明は、誘導機器に関するものである。   The present invention relates to an induction device.

特許文献1に記載のトランスにおいては、プリント基板の表面に導電パターンからなるコイルが形成されるとともに、このプリント基板のコイル領域の上にサブ基板が配置されている。サブ基板の表面に導電パターンからなるコイルが形成され、このコイルの領域においてコアがプリント基板とサブ基板を挟持して両面から対向するようにプリント基板に取り付けられている。   In the transformer described in Patent Document 1, a coil made of a conductive pattern is formed on the surface of a printed board, and a sub-board is disposed on the coil area of the printed board. A coil made of a conductive pattern is formed on the surface of the sub-board, and the core is attached to the printed board so as to face the both sides of the printed board and the sub-board in this coil area.

実開平6−9111号公報Japanese Utility Model Publication No. 6-9111

コアをプリント基板に直接取り付けるため、コアとプリント基板の線膨張係数の違いによる応力がコアおよびプリント基板に加わり破壊される虞がある。
本発明の目的は、コアとコイル保持具の線膨張係数の違いによる応力がコアおよびコイル保持具に加わりにくい誘導機器を提供することにある。
Since the core is directly attached to the printed circuit board, stress due to the difference in linear expansion coefficient between the core and the printed circuit board may be applied to the core and the printed circuit board, causing damage.
An object of the present invention is to provide an induction device in which stress due to a difference in linear expansion coefficient between a core and a coil holder is not easily applied to the core and the coil holder.

上記課題を解決する誘導機器は、筐体と、前記筐体内に配置され、コイル保持具により保持されたコイルと、前記筐体内に配置され、前記コイルが巻回される部位を有するコアと、を備え、前記筐体の内部底面には、複数の突起が形成され、前記コアは、前記複数の突起により位置決めされており、前記コアと前記コイル保持具とは別々に筐体に固定されているとともに、前記コイル保持具は前記複数の突起に対して離間している。   An induction device that solves the above problems includes a housing, a coil that is disposed in the housing and held by a coil holder, a core that is disposed in the housing and has a portion around which the coil is wound, A plurality of protrusions are formed on the inner bottom surface of the housing, the core is positioned by the plurality of protrusions, and the core and the coil holder are separately fixed to the housing. And the coil holder is spaced from the plurality of protrusions.

上記の誘導機器によれば、筐体内において、コイル保持具により保持されたコイルと、コイルが巻回される部位を有するコアとが配置されている。ここで、コアとコイル保持具とが別々に筐体に固定されている。これにより、コアとコイル保持具とが直接取り付けられていないため、コアとコイル保持具の線膨張係数の違いによる応力がコアおよびコイル保持具に加わりにくい。   According to said induction | guidance | derivation apparatus, the coil hold | maintained by the coil holder and the core which has a site | part by which a coil is wound are arrange | positioned in a housing | casing. Here, the core and the coil holder are separately fixed to the housing. Thereby, since the core and the coil holder are not directly attached, stress due to the difference in linear expansion coefficient between the core and the coil holder is not easily applied to the core and the coil holder.

上記の誘導機器において、前記筐体の内部底面には、前記複数の突起よりも上方に達する固定用部材が前記複数の突起よりも外周側に配置され、前記固定用部材の上面に、前記コイル保持具が固定されていてもよい。   In the induction device, a fixing member that extends above the plurality of protrusions is disposed on an outer peripheral side of the plurality of protrusions on an inner bottom surface of the casing, and the coil is formed on an upper surface of the fixing member. The holding tool may be fixed.

また、上記の誘導機器において、前記筐体は、上面が開口した箱型をなしており、前記筐体の開口には、当該開口を塞ぐように蓋材が取付けられ、前記筐体に取付けられた前記蓋材が前記コアを下方に付勢することで、前記コアが前記筐体に固定されていてもよい。   Further, in the above induction device, the housing has a box shape with an upper surface opened, and a lid is attached to the opening of the housing so as to close the opening, and is attached to the housing. In addition, the core may be fixed to the casing by the lid member urging the core downward.

上記の誘導機器によれば、コアとコイル保持具の線膨張係数の違いによる応力がコアおよびコイル保持具に加わりにくい。   According to said induction | guidance | derivation apparatus, the stress by the difference in the linear expansion coefficient of a core and a coil holder is hard to apply to a core and a coil holder.

(a)は第1の実施形態におけるトランスの平面図、(b)は(a)のA−A線での縦断面図。(A) is a top view of the trans | transformer in 1st Embodiment, (b) is a longitudinal cross-sectional view in the AA line of (a). (a)は第1の実施形態の変形例におけるトランスの平面図、(b)は(a)のA−A線での縦断面図。(A) is a top view of the trans | transformer in the modification of 1st Embodiment, (b) is a longitudinal cross-sectional view in the AA of (a). (a)は第2の実施形態におけるトランスの平面図、(b)は(a)のA−A線での縦断面図、(c)は(a)のB−B線での縦断面図。(A) is a top view of the transformer in 2nd Embodiment, (b) is a longitudinal cross-sectional view in the AA line of (a), (c) is a longitudinal cross-sectional view in the BB line of (a). . (a)は第2の実施形態の変形例におけるトランスの平面図、(b)は(a)のA−A線での縦断面図、(c)は(a)のB−B線での縦断面図。(A) is a top view of the transformer in the modification of 2nd Embodiment, (b) is a longitudinal cross-sectional view in the AA line of (a), (c) is in the BB line of (a). FIG.

(第1の実施形態)
以下、本発明をトランスに具体化した第1の実施形態を図面に従って説明する。
図1に示すように、誘導機器としてのトランス10は、筐体20と、一次コイルC1と二次コイルC2と、コア40を備えている。筐体20は、上面が開口した箱型をなしている。
(First embodiment)
Hereinafter, a first embodiment in which the present invention is embodied in a transformer will be described with reference to the drawings.
As shown in FIG. 1, a transformer 10 as an induction device includes a housing 20, a primary coil C <b> 1, a secondary coil C <b> 2, and a core 40. The housing 20 has a box shape with an upper surface opened.

筐体20内には、厚銅基板30とコア40が配置されている。ここで、厚銅基板30を用いて一次コイルC1と二次コイルC2を構成しており、厚銅基板30の銅板31により一次コイルC1が、銅板32により二次コイルC2が構成されている。そして、コア40に一次コイルC1と二次コイルC2が巻かれている。   A thick copper substrate 30 and a core 40 are disposed in the housing 20. Here, the primary coil C <b> 1 and the secondary coil C <b> 2 are configured using the thick copper substrate 30, the primary coil C <b> 1 is configured by the copper plate 31 of the thick copper substrate 30, and the secondary coil C <b> 2 is configured by the copper plate 32. A primary coil C1 and a secondary coil C2 are wound around the core 40.

厚銅基板30は、第1の銅板31と第2の銅板32と絶縁性基板33とからなる。絶縁性基板33の一方の面である上面には第1の銅板31が接着されている。この第1の銅板31には、一次コイルC1がパターニングされている。また、絶縁性基板33は、例えば、ガラス・エポキシ樹脂よりなる。   The thick copper substrate 30 includes a first copper plate 31, a second copper plate 32, and an insulating substrate 33. A first copper plate 31 is bonded to the upper surface, which is one surface of the insulating substrate 33. A primary coil C1 is patterned on the first copper plate 31. The insulating substrate 33 is made of, for example, glass / epoxy resin.

絶縁性基板33の他方の面である下面には第2の銅板32が接着されている。この第2の銅板32には、二次コイルC2がパターニングされている。このように、一次コイルC1と二次コイルC2は、コイル保持具としての絶縁性基板33により保持されている。   A second copper plate 32 is bonded to the lower surface which is the other surface of the insulating substrate 33. A secondary coil C <b> 2 is patterned on the second copper plate 32. Thus, the primary coil C1 and the secondary coil C2 are hold | maintained by the insulating board | substrate 33 as a coil holder.

コア40としてE−I型コアを用いており、E−I型コアはE型コア41とI型コア42により構成されている。E型コア41は、長方形の板状をなし水平方向に延設された本体部41aと、本体部41aの一方の面(下面)の中央部から突出する中央磁脚41bと、本体部41aの一方の面(下面)の端部から突設する両側磁脚41c,41dとからなる。中央磁脚41bおよび両側磁脚41c,41dはその断面が長方形をなしている。   An EI type core is used as the core 40, and the EI type core includes an E type core 41 and an I type core 42. The E-shaped core 41 has a rectangular plate-like body part 41a extending in the horizontal direction, a central magnetic leg 41b projecting from the center part of one surface (lower surface) of the body part 41a, and the body part 41a. It consists of both magnetic leg 41c, 41d which protrudes from the edge part of one surface (lower surface). The cross section of the center magnetic leg 41b and the both side magnetic legs 41c and 41d is rectangular.

I型コア42は、長方形の板状をなし、水平方向に延設されている。そして、E型コア41の中央磁脚41bの先端面とI型コア42の上面とが突き合わされるとともに、E型コア41の両側磁脚41c,41dの先端面とI型コア42の上面とが突き合わされる。これによりE−I型コアが構成され、閉磁路が形成される。   The I-type core 42 has a rectangular plate shape and extends in the horizontal direction. The front end surface of the center magnetic leg 41b of the E-type core 41 and the upper surface of the I-type core 42 are abutted with each other, and the front end surfaces of both side magnetic legs 41c and 41d of the E-type core 41 and the upper surface of the I-type core 42 are Are matched. As a result, an EI type core is formed, and a closed magnetic circuit is formed.

厚銅基板30の絶縁性基板33の中央部には、E型コア41の中央磁脚41bが通る貫通孔34が形成されている。厚銅基板30の第1の銅板31による一次コイルC1は、絶縁性基板33の貫通孔34を中心として1本の導体による渦巻き形状をなし、これによりE型コア41の中央磁脚41bに複数ターン巻回される。同様に、厚銅基板30の第2の銅板32による二次コイルC2は、絶縁性基板33の貫通孔34を中心として1本の導体による渦巻き形状をなし、これによりE型コア41の中央磁脚41bに複数ターン巻回される。このようにコア40は、一次コイルC1と二次コイルC2が巻回される部位としての中央磁脚41bを有している。   A through hole 34 through which the central magnetic leg 41 b of the E-type core 41 passes is formed at the center of the insulating substrate 33 of the thick copper substrate 30. The primary coil C1 by the first copper plate 31 of the thick copper substrate 30 has a spiral shape with one conductor centering on the through hole 34 of the insulating substrate 33, whereby a plurality of primary coils C1 are formed on the central magnetic leg 41b of the E-type core 41. Turned around. Similarly, the secondary coil C <b> 2 by the second copper plate 32 of the thick copper substrate 30 has a spiral shape with one conductor centering on the through hole 34 of the insulating substrate 33, thereby the central magnet of the E-type core 41. A plurality of turns are wound around the legs 41b. Thus, the core 40 has the center magnetic leg 41b as a site | part by which the primary coil C1 and the secondary coil C2 are wound.

また、厚銅基板30の絶縁性基板33には、E型コア41の両側磁脚41cが通る貫通孔35、および、E型コア41の両側磁脚41dが通る貫通孔36が形成されている。
なお、厚銅基板30の絶縁性基板33の貫通孔34,35,36はE型コア41の脚部(中央磁脚41b、両側磁脚41c,41d)よりも大きくなっている。
The insulating substrate 33 of the thick copper substrate 30 is formed with a through hole 35 through which both side magnetic legs 41 c of the E type core 41 pass and a through hole 36 through which both side magnetic legs 41 d of the E type core 41 pass. .
The through holes 34, 35, and 36 of the insulating substrate 33 of the thick copper substrate 30 are larger than the legs of the E-type core 41 (central magnetic legs 41b and both-side magnetic legs 41c and 41d).

筐体20は、上面が開口した箱型をなしており、アルミよりなる。筐体20における内部底面にはI型コア42が載置されている。筐体20の内部底面には突起21a,21b,21c,21dが形成され、突起21a,21b,21c,21dによりI型コア42が位置決めされている。詳しくは、I型コア42の延設方向におけるI型コア42の一端面側に突起21a,21bが配置され、I型コア42の他端面側に突起21c,21dが配置されており、I型コア42の短辺側側面と一端面側の突起21a,21bおよび他端面側の突起21c,21dとが接触することによりI型コア42が位置決めされている。   The housing 20 has a box shape with an upper surface opened, and is made of aluminum. An I-type core 42 is placed on the inner bottom surface of the housing 20. Projections 21a, 21b, 21c, and 21d are formed on the inner bottom surface of the housing 20, and the I-type core 42 is positioned by the projections 21a, 21b, 21c, and 21d. Specifically, the protrusions 21a and 21b are arranged on one end face side of the I-type core 42 in the extending direction of the I-type core 42, and the protrusions 21c and 21d are arranged on the other end face side of the I-type core 42. The I-type core 42 is positioned by contacting the short side surface of the core 42 with the projections 21a and 21b on the one end surface side and the projections 21c and 21d on the other end surface side.

筐体20の内部底面におけるI型コア42よりも外周側において厚銅基板固定用部材50が配置されている。厚銅基板固定用部材50は四角枠状をなし、筐体20の内部底面にI型コア42を囲む状態で固定されている。   A thick copper substrate fixing member 50 is arranged on the outer peripheral side of the inner bottom surface of the housing 20 relative to the I-type core 42. The thick copper substrate fixing member 50 has a rectangular frame shape and is fixed to the inner bottom surface of the housing 20 so as to surround the I-type core 42.

厚銅基板固定用部材50の上面に厚銅基板30が載置されている。厚銅基板30の絶縁性基板33を貫通するネジ60が厚銅基板固定用部材50に螺入され、このネジ60により厚銅基板30が厚銅基板固定用部材50に固定されている。このようにして厚銅基板30はネジ止めされ、厚銅基板30の絶縁性基板33が筐体20に固定されている。   The thick copper substrate 30 is placed on the upper surface of the thick copper substrate fixing member 50. A screw 60 that penetrates the insulating substrate 33 of the thick copper substrate 30 is screwed into the thick copper substrate fixing member 50, and the thick copper substrate 30 is fixed to the thick copper substrate fixing member 50 by this screw 60. In this way, the thick copper substrate 30 is screwed, and the insulating substrate 33 of the thick copper substrate 30 is fixed to the housing 20.

このとき、I型コア42よりも上方に離間した状態で厚銅基板30が位置し、厚銅基板30の絶縁性基板33の貫通孔34にE型コア41の中央磁脚41bが通される。また、厚銅基板30の第1の銅板31による一次コイルC1はE型コア41の本体部41aの下面と空隙(空気層)を介して離間している。絶縁性基板33の第2の銅板32による二次コイルC2はI型コア42の上面と空隙(空気層)を介して離間している。   At this time, the thick copper substrate 30 is positioned in a state of being spaced above the I-type core 42, and the central magnetic leg 41 b of the E-type core 41 is passed through the through hole 34 of the insulating substrate 33 of the thick copper substrate 30. . Further, the primary coil C <b> 1 by the first copper plate 31 of the thick copper substrate 30 is separated from the lower surface of the main body 41 a of the E-type core 41 via a gap (air layer). The secondary coil C2 formed by the second copper plate 32 of the insulating substrate 33 is separated from the upper surface of the I-type core 42 via a gap (air layer).

図1(b)に示すように、筐体20における上面開口部には蓋材70が開口部を塞ぐように取り付けられ、蓋材70は自身のばね力F1によりE型コア41を下方に付勢している。これにより、E型コア41がI型コア42の上に載置された状態を保持している。即ち、コア40は上下から押さえることで筐体20に固定されている。   As shown in FIG. 1B, a lid member 70 is attached to the upper surface opening of the housing 20 so as to close the opening, and the lid member 70 attaches the E-type core 41 downward by its own spring force F1. It is fast. As a result, the E-type core 41 is held on the I-type core 42. That is, the core 40 is fixed to the housing 20 by pressing from above and below.

なお、図1(b)に示す蓋材70は、図1(a)においては省略している。
厚銅基板30の絶縁性基板33の貫通孔36の一方の面がE型コア41の両側磁脚41dと接触している。これにより、E型コア41の水平方向は厚銅基板30の絶縁性基板33と突き当てて位置決めされている。コア40と厚銅基板30(絶縁性基板33)は別々に筐体20に固定されている。即ち、コア40は厚銅基板30の絶縁性基板33に直接取り付けられていない。一次コイルC1および二次コイルC2と、コア40との間に形成された空隙(空気層)により、一次コイルC1および二次コイルC2とコア40の間に断熱と絶縁が図られている。
The lid member 70 shown in FIG. 1 (b) is omitted in FIG. 1 (a).
One surface of the through hole 36 of the insulating substrate 33 of the thick copper substrate 30 is in contact with both side magnetic legs 41 d of the E-type core 41. As a result, the horizontal direction of the E-type core 41 is positioned against the insulating substrate 33 of the thick copper substrate 30. The core 40 and the thick copper substrate 30 (insulating substrate 33) are fixed to the housing 20 separately. That is, the core 40 is not directly attached to the insulating substrate 33 of the thick copper substrate 30. Heat insulation and insulation are achieved between the primary coil C1 and the secondary coil C2 and the core 40 by a gap (air layer) formed between the primary coil C1 and the secondary coil C2 and the core 40.

次に、このように構成したトランス10の作用を説明する。
トランス10を組み立てる際には、筐体20と、厚銅基板30と、E型コア41と、I型コア42と、蓋材70とを用意する。このとき、筐体20には突起21a〜21dと厚銅基板固定用部材50が固定されている。
Next, the operation of the transformer 10 thus configured will be described.
When assembling the transformer 10, the housing 20, the thick copper substrate 30, the E-type core 41, the I-type core 42, and the lid member 70 are prepared. At this time, the protrusions 21 a to 21 d and the thick copper substrate fixing member 50 are fixed to the housing 20.

そして、筐体20の内部底面にI型コア42を配置する。このとき、突起21a,21b,21c,21dによりI型コア42が位置決めされる。
続いて、筐体20の内部における厚銅基板固定用部材50の上に厚銅基板30を載置し、ネジ60により厚銅基板30を厚銅基板固定用部材50に固定する。
Then, the I-type core 42 is disposed on the inner bottom surface of the housing 20. At this time, the I-type core 42 is positioned by the protrusions 21a, 21b, 21c, and 21d.
Subsequently, the thick copper substrate 30 is placed on the thick copper substrate fixing member 50 inside the housing 20, and the thick copper substrate 30 is fixed to the thick copper substrate fixing member 50 with the screws 60.

さらに、I型コア42の上にE型コア41を配置する。つまり、厚銅基板30の貫通孔34にE型コア41の中央磁脚41bが、厚銅基板30の貫通孔35に両側磁脚41cが、厚銅基板30の貫通孔36に両側磁脚41dが、それぞれ通る状態でI型コア42の上にE型コア41を配置する。   Further, the E-type core 41 is disposed on the I-type core 42. That is, the central magnetic leg 41 b of the E-shaped core 41 is formed in the through hole 34 of the thick copper substrate 30, the double magnetic legs 41 c are formed in the through hole 35 of the thick copper substrate 30, and the double magnetic legs 41 d are formed in the through hole 36 of the thick copper substrate 30. However, the E-type core 41 is arranged on the I-type core 42 in a state where each passes through.

そして、筐体20の上面開口部に蓋材70を取り付ける。この蓋材70によるばね力F1によりE型コア41が下方に付勢され、E型コア41がI型コア42の上に載置された状態で保持される。   Then, the lid member 70 is attached to the upper surface opening of the housing 20. The E-type core 41 is biased downward by the spring force F <b> 1 by the lid member 70, and the E-type core 41 is held in a state of being placed on the I-type core 42.

このようにしてトランス10を組み立てた後、トランス10の一次コイルC1、二次コイルC2に電流を流す。通電に伴い一次コイルC1(第1の銅板31)、二次コイルC2(第2の銅板32)が発熱する。この熱は大気に逃がされる。また、コア40の熱については、I型コア42から筐体20に逃がされる。よって、一次コイルC1および二次コイルC2の放熱経路とコア40の放熱経路が独立している。   After assembling the transformer 10 in this way, a current is passed through the primary coil C1 and the secondary coil C2 of the transformer 10. With energization, the primary coil C1 (first copper plate 31) and the secondary coil C2 (second copper plate 32) generate heat. This heat is released to the atmosphere. Further, the heat of the core 40 is released from the I-type core 42 to the housing 20. Therefore, the heat dissipation path of the primary coil C1 and the secondary coil C2 and the heat dissipation path of the core 40 are independent.

また、コア40の線膨張係数と絶縁性基板33の線膨張係数は異なるが、コア40と厚銅基板30(絶縁性基板33)とが別々に筐体20に固定されているため、コア40と絶縁性基板33の線膨張係数の違いによる応力がコア40および絶縁性基板33に加わりにくい。   Further, although the linear expansion coefficient of the core 40 and the linear expansion coefficient of the insulating substrate 33 are different, the core 40 and the thick copper substrate 30 (insulating substrate 33) are separately fixed to the housing 20, and therefore the core 40 Stress due to the difference in linear expansion coefficient between the insulating substrate 33 and the insulating substrate 33 is hardly applied to the core 40 and the insulating substrate 33.

上記実施形態によれば、以下のような効果を得ることができる。
(1)コア40と、コイル保持具としての絶縁性基板33とを別々に筐体20に固定したので、コア40と絶縁性基板33とが直接取り付けられていないため、コア40と絶縁性基板33の線膨張係数の違いによる応力がコア40および絶縁性基板33に加わりにくい。
According to the above embodiment, the following effects can be obtained.
(1) Since the core 40 and the insulating substrate 33 as a coil holder are separately fixed to the housing 20, the core 40 and the insulating substrate 33 are not directly attached. Stress due to the difference in the linear expansion coefficient of 33 is hardly applied to the core 40 and the insulating substrate 33.

(2)コイル保持具は基板(絶縁性基板33)であり、基板(絶縁性基板33)の少なくとも一方の面にコイルが保持されているので、コイルを保持する上で好ましい。つまり、基板を用いてコイルを容易に保持することができる。   (2) The coil holder is a substrate (insulating substrate 33), and the coil is held on at least one surface of the substrate (insulating substrate 33), which is preferable for holding the coil. That is, the coil can be easily held using the substrate.

本実施形態の変形例を説明する。
図2に示すように、二次コイルC2とI型コア42との間に熱伝導部材80,81を介在させている。熱伝導部材80,81は、絶縁性を有するとともに熱抵抗の小さな材料よりなる。例えば、熱伝導部材80,81として、放熱シートやグリースを用いる。
A modification of this embodiment will be described.
As shown in FIG. 2, heat conducting members 80 and 81 are interposed between the secondary coil C <b> 2 and the I-type core 42. The heat conducting members 80 and 81 are made of a material having insulating properties and low thermal resistance. For example, a heat radiating sheet or grease is used as the heat conducting members 80 and 81.

このように、二次コイルC2とI型コア42との間に熱伝導部材80,81を介在させることにより、二次コイルC2に発生した熱を、熱伝導部材80,81を介してI型コア42に容易に逃がすことができる。   Thus, by interposing the heat conductive members 80 and 81 between the secondary coil C2 and the I-type core 42, the heat generated in the secondary coil C2 is transferred to the I-type via the heat conductive members 80 and 81. The core 42 can be easily escaped.

つまり、I型コア42とコイルC2との間が確実に確保される構成であり、放熱性シート等の熱伝導部材80,81を使用して、I型コア42に積極的に熱を逃がすことができる。   In other words, the space between the I-type core 42 and the coil C2 is reliably ensured, and heat is actively released to the I-type core 42 by using the heat conducting members 80 and 81 such as a heat radiating sheet. Can do.

(第2の実施形態)
次に、本発明をトランスに具体化した第2の実施形態を図面に従って説明する。
図3に示す本実施形態のトランス100も、筐体110を放熱部材として用いており、トランスに発生した熱を筐体110に逃がすようにしている。特に、本実施形態では、長尺状のコア130の長辺側側面の外側で、コイル保持具としての絶縁性基板123を筐体110に固定している。
(Second Embodiment)
Next, a second embodiment in which the present invention is embodied in a transformer will be described with reference to the drawings.
The transformer 100 of the present embodiment shown in FIG. 3 also uses the casing 110 as a heat radiating member, and the heat generated in the transformer is released to the casing 110. In particular, in this embodiment, the insulating substrate 123 as a coil holder is fixed to the housing 110 outside the long side surface of the long core 130.

以下、詳しく説明する。
図3において、コア130としてE−I型コアを用いており、コア130はE型コア131とI型コア132からなる。I型コア132を図3(b),(c)に二点鎖線で示し、図3(a)では省略している。
This will be described in detail below.
In FIG. 3, an EI type core is used as the core 130, and the core 130 includes an E type core 131 and an I type core 132. The I-type core 132 is indicated by a two-dot chain line in FIGS. 3B and 3C and is omitted in FIG.

厚銅基板120は、第1の銅板121と第2の銅板122と絶縁性基板123とからなる。絶縁性基板123の一方の面である上面には第1の銅板121が接着され、第1の銅板121に一次コイルC10がパターニングされている。絶縁性基板123の他方の面である下面には第2の銅板122が接着され、第2の銅板122に二次コイルC11がパターニングされている。   The thick copper substrate 120 includes a first copper plate 121, a second copper plate 122, and an insulating substrate 123. A first copper plate 121 is bonded to the upper surface, which is one surface of the insulating substrate 123, and the primary coil C <b> 10 is patterned on the first copper plate 121. A second copper plate 122 is bonded to the lower surface, which is the other surface of the insulating substrate 123, and the secondary coil C <b> 11 is patterned on the second copper plate 122.

筐体110は、上面が開口した箱型をなしている。筐体110の内面底部にE型コア131が配置されている。E型コア131は、長方形の板状をなし水平方向に延設された本体部131aと、本体部131aの一方の面(上面)の中央部から突出する中央磁脚131bと、本体部131aの一方の面(上面)の端部から突設する両側磁脚131c,131dとからなる。また、中央磁脚131bは円柱状をなしている。I型コア132も、E型コア131の本体部131aと同様に、長方形の板状をなし水平方向に延設されている。   The housing 110 has a box shape with an upper surface opened. An E-type core 131 is disposed on the inner bottom of the housing 110. The E-shaped core 131 has a rectangular plate shape extending in the horizontal direction, a central magnetic leg 131b protruding from the central portion of one surface (upper surface) of the main body portion 131a, and the main body portion 131a. It consists of both magnetic legs 131c and 131d protruding from the end of one surface (upper surface). The central magnetic leg 131b has a cylindrical shape. Similarly to the main body 131a of the E-type core 131, the I-type core 132 has a rectangular plate shape and extends in the horizontal direction.

筐体110はアルミよりなる。筐体110の内部底面において厚銅基板載置部111,112が突設されている。厚銅基板載置部111,112は、E型コア131の本体部131aの延設方向に対して直交する方向においてE型コア131の中央磁脚131bを挟んだ位置に形成され、厚銅基板載置部111,112は円弧状をなしている。厚銅基板載置部111の上面111aおよび厚銅基板載置部112の上面112aは、平坦、且つ高さが同一である。   The casing 110 is made of aluminum. Thick copper substrate mounting portions 111 and 112 project from the inner bottom surface of the housing 110. The thick copper substrate mounting portions 111 and 112 are formed at positions sandwiching the central magnetic leg 131b of the E type core 131 in a direction orthogonal to the extending direction of the main body portion 131a of the E type core 131. The mounting portions 111 and 112 have an arc shape. The upper surface 111a of the thick copper substrate mounting portion 111 and the upper surface 112a of the thick copper substrate mounting portion 112 are flat and have the same height.

筐体110の厚銅基板載置部111,112の上面111a,112aには厚銅基板120が載置されている。厚銅基板120の絶縁性基板123は図示しないネジにより筐体110の厚銅基板載置部111,112に固定されている(ネジ止めされている)。   A thick copper substrate 120 is placed on the upper surfaces 111 a and 112 a of the thick copper substrate placement portions 111 and 112 of the housing 110. The insulating substrate 123 of the thick copper substrate 120 is fixed (screwed) to the thick copper substrate mounting portions 111 and 112 of the housing 110 by screws (not shown).

厚銅基板120の絶縁性基板123の中央部には、E型コア131の中央磁脚131bが通る貫通孔124が形成されている。厚銅基板120の第1の銅板121による一次コイルC1は、絶縁性基板123の貫通孔124を中心として1本の導体による渦巻き形状をなし、これによりE型コア131の中央磁脚131bに複数ターン巻回される。同様に、厚銅基板120の第2の銅板122による二次コイルC2は、絶縁性基板123の貫通孔124を中心として1本の導体による渦巻き形状をなし、これによりE型コア131の中央磁脚131bに複数ターン巻回される。   A through-hole 124 through which the central magnetic leg 131 b of the E-type core 131 passes is formed in the central portion of the insulating substrate 123 of the thick copper substrate 120. The primary coil C1 formed by the first copper plate 121 of the thick copper substrate 120 has a spiral shape with one conductor centering on the through hole 124 of the insulating substrate 123, whereby a plurality of coils are formed on the central magnetic leg 131b of the E-type core 131. Turned around. Similarly, the secondary coil C <b> 2 by the second copper plate 122 of the thick copper substrate 120 has a spiral shape with one conductor centering on the through hole 124 of the insulating substrate 123, and thereby the central magnet of the E-type core 131. A plurality of turns are wound around the legs 131b.

筐体110の内部底面には突起113a,113b,113c,113dが形成され、突起113a,113b,113c,113dによりE型コア131が位置決めされている。詳しくは、E型コア131の本体部131aの延設方向におけるE型コア131の本体部131aの一端面側に突起113a,113bが配置され、E型コア131の本体部131aの他端面側に突起113c,113dが配置されており、E型コア131の本体部131aの短辺側側面と一端面側の突起113a,113bおよび他端面側の突起113c,113dとが接触することによりE型コア131が位置決めされている。   Projections 113a, 113b, 113c, and 113d are formed on the inner bottom surface of the housing 110, and the E-type core 131 is positioned by the projections 113a, 113b, 113c, and 113d. Specifically, the protrusions 113a and 113b are arranged on one end surface side of the main body portion 131a of the E type core 131 in the extending direction of the main body portion 131a of the E type core 131, and on the other end surface side of the main body portion 131a of the E type core 131. The projections 113c and 113d are arranged, and the E-type core 131 is brought into contact with the projections 113a and 113b on one end surface side and the projections 113c and 113d on the other end surface side of the main body 131a of the E-type core 131. 131 is positioned.

図3(b)に示すように、筐体110における上面開口部には蓋材140が開口部を塞ぐように取り付けられ、蓋材140は自身のばね力F10によりI型コア132を下方に付勢している。これにより、I型コア132がE型コア131の上に載置された状態を保持している。即ち、コア130は上下から押さえることで固定されている。なお、図3(b)に示す蓋材140は図3(a),(c)では省略している。   As shown in FIG. 3B, the lid member 140 is attached to the upper surface opening of the housing 110 so as to close the opening, and the lid member 140 attaches the I-type core 132 downward by its own spring force F10. It is fast. As a result, the I-type core 132 is held on the E-type core 131. That is, the core 130 is fixed by pressing from above and below. 3B is omitted in FIGS. 3A and 3C.

上記実施形態によれば、以下のような効果を得ることができる。
絶縁性基板123を筐体110に固定する際に、長尺状のコア130の長辺側側面の外側において絶縁性基板123を筐体110に固定することができる。
According to the above embodiment, the following effects can be obtained.
When fixing the insulating substrate 123 to the casing 110, the insulating substrate 123 can be fixed to the casing 110 outside the long side surface of the long core 130.

本実施形態の変形例を説明する。
図4(a),(c)に示すように、二次コイルC11と筐体110との間に熱伝導部材150,151を介在させている。熱伝導部材150,151は、絶縁性を有するとともに熱抵抗の小さな材料よりなる。例えば、熱伝導部材150,151として、放熱シートやグリースを用いる。なお、二次コイルC11と筐体110との距離を短くするために、筐体110の底部における二次コイルC11と対向する部位を二次コイルC11に近づくように厚肉にしている。
A modification of this embodiment will be described.
As shown in FIGS. 4A and 4C, heat conducting members 150 and 151 are interposed between the secondary coil C <b> 11 and the housing 110. The heat conducting members 150 and 151 are made of a material having insulating properties and low thermal resistance. For example, a heat radiating sheet or grease is used as the heat conducting members 150 and 151. In order to shorten the distance between the secondary coil C11 and the housing 110, a portion facing the secondary coil C11 at the bottom of the housing 110 is thickened so as to approach the secondary coil C11.

このようにすると、二次コイルC11に発生した熱を、熱伝導部材150,151を介して筐体110に容易に逃がすことができる。
実施形態は前記に限定されるものではなく、例えば、次のように具体化してもよい。
In this way, the heat generated in the secondary coil C11 can be easily released to the housing 110 via the heat conducting members 150 and 151.
The embodiment is not limited to the above, and may be embodied as follows, for example.

・第1の実施形態でも、第2の実施形態のように筐体とコイルとの間に熱伝導部材を設けてもよい。
・第1の実施形態、第2の実施形態とも、コアとコイルの間、および、筐体とコイルの間に熱伝導部材を設けてもよい。
-In 1st Embodiment, you may provide a heat conductive member between a housing | casing and a coil like 2nd Embodiment.
-In both 1st Embodiment and 2nd Embodiment, you may provide a heat conductive member between a core and a coil and between a housing | casing and a coil.

・上記実施形態では基板(厚銅基板30,120)の両面にコイルを配置したが、一方の面にのみコイルを配置してもよい。
・上記実施形態では絶縁性基板の表面に銅板を接着した厚銅基板30,120を用いたが、これに限るものではなく、銅の板に代わりアルミの板を絶縁性基板の表面に接着したものを用いてもよい。また、厚銅基板に代わりプリント基板を用いてもよい。
In the above embodiment, the coils are arranged on both surfaces of the substrate (thick copper substrates 30, 120), but the coils may be arranged only on one surface.
In the above embodiment, the thick copper substrates 30 and 120 in which the copper plate is bonded to the surface of the insulating substrate are used. However, the present invention is not limited to this, and an aluminum plate is bonded to the surface of the insulating substrate instead of the copper plate. A thing may be used. Further, a printed board may be used instead of the thick copper board.

・厚銅基板(やプリント基板)に代わり、コイルを樹脂で成形したものを用いてもよい。つまり、コイル保持具として樹脂を用いて、樹脂によりコイルを保持してもよい。
・基板の固定のためにネジ止めとしたが、ネジ止め以外のやり方で基板を固定してもよい。
-Instead of a thick copper substrate (or printed circuit board), a coil formed of resin may be used. That is, resin may be used as a coil holder and the coil may be held by resin.
-Although screwing was used for fixing the substrate, the substrate may be fixed by a method other than screwing.

・誘導機器としてトランスに適用したが、リアクトルに適用してもよい。具体的には、例えば、絶縁性基板の一方の面に第1のコイルを、また、絶縁性基板の他方の面に第2のコイルを配置し、さらに、第1のコイルと第2のコイルを電気的に接続してリアクトルを構成する。   -Although applied to a transformer as an induction device, it may be applied to a reactor. Specifically, for example, the first coil is disposed on one surface of the insulating substrate, the second coil is disposed on the other surface of the insulating substrate, and further, the first coil and the second coil are disposed. Are connected to form a reactor.

10…トランス、20…筐体、30…厚銅基板、31…第1の銅板、32…第2の銅板、33…絶縁性基板、40…コア、41…E型コア、42…I型コア、50…厚銅基板固定部材、70…蓋体、80…熱伝導部材、81…熱伝導部材、100…トランス、110…筐体、111…厚銅基板載置部、112…厚銅基板載置部、120…厚銅基板、121…第1の銅板、122…第2の銅板、123…絶縁性基板、130…コア、131…E型コア、132…I型コア、150…熱伝導部材、151…熱伝導部材、C1…一次コイル、C2…二次コイル、C10…一次コイル、C11…二次コイル。   DESCRIPTION OF SYMBOLS 10 ... Transformer, 20 ... Housing, 30 ... Thick copper substrate, 31 ... First copper plate, 32 ... Second copper plate, 33 ... Insulating substrate, 40 ... Core, 41 ... E type core, 42 ... I type core 50 ... Thick copper substrate fixing member, 70 ... Lid, 80 ... Heat conduction member, 81 ... Heat conduction member, 100 ... Transformer, 110 ... Housing, 111 ... Thick copper substrate placement part, 112 ... Thick copper substrate mounting Place: 120 ... Thick copper substrate, 121 ... First copper plate, 122 ... Second copper plate, 123 ... Insulating substrate, 130 ... Core, 131 ... E type core, 132 ... I type core, 150 ... Heat conducting member , 151... Heat conducting member, C1... Primary coil, C2... Secondary coil, C10... Primary coil, C11.

Claims (3)

筐体と、
前記筐体内に配置され、コイル保持具により保持されたコイルと、
前記筐体内に配置され、前記コイルが巻回される部位を有するコアと、
を備え、
前記筐体の内部底面には、複数の突起が形成され、
前記コアは、前記複数の突起により位置決めされており、
前記コアと前記コイル保持具とは別々に筐体に固定されているとともに、前記コイル保持具は前記複数の突起に対して離間していることを特徴とする誘導機器。
A housing,
A coil disposed in the housing and held by a coil holder;
A core disposed within the housing and having a portion around which the coil is wound;
With
A plurality of protrusions are formed on the inner bottom surface of the housing,
The core is positioned by the plurality of protrusions;
The core device and the coil holder are separately fixed to a casing, and the coil holder is separated from the plurality of protrusions.
前記筐体の内部底面には、前記複数の突起よりも上方に達する固定用部材が前記複数の突起よりも外周側に配置され、
前記固定用部材の上面に、前記コイル保持具が固定されていることを特徴とする請求項1に記載の誘導機器。
On the inner bottom surface of the housing, a fixing member that reaches above the plurality of protrusions is disposed on the outer peripheral side of the plurality of protrusions,
The induction device according to claim 1, wherein the coil holder is fixed to an upper surface of the fixing member.
前記筐体は、上面が開口した箱型をなしており、
前記筐体の開口には、当該開口を塞ぐように蓋材が取付けられ、
前記筐体に取付けられた前記蓋材が前記コアを下方に付勢することで、前記コアが前記筐体に固定されていることを特徴とする請求項1又は2に記載の誘導機器。
The housing has a box shape with an open top surface,
A lid is attached to the opening of the housing so as to close the opening,
The induction device according to claim 1, wherein the core is fixed to the casing by the lid member attached to the casing biasing the core downward.
JP2014222743A 2014-10-31 2014-10-31 Induction apparatus Pending JP2015026867A (en)

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