JP6388770B2 - Winding parts - Google Patents

Winding parts Download PDF

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JP6388770B2
JP6388770B2 JP2014008345A JP2014008345A JP6388770B2 JP 6388770 B2 JP6388770 B2 JP 6388770B2 JP 2014008345 A JP2014008345 A JP 2014008345A JP 2014008345 A JP2014008345 A JP 2014008345A JP 6388770 B2 JP6388770 B2 JP 6388770B2
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coil
cover
winding
dam
bottom plate
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JP2015138817A (en
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佐野　哲也
哲也 佐野
祐二 井田
祐二 井田
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FDK Corp
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FDK Corp
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本発明は、チョークコイルやトランス等の磁場を発生させるコイルと磁路を構成するコアとを備えた巻線部品に関するものである。   The present invention relates to a winding component including a coil that generates a magnetic field, such as a choke coil and a transformer, and a core that forms a magnetic path.

ＦＡ機器や車載用の各種電子・電気機器類に組み込まれるチョークコイルやリアクトル等の巻線部品のうち、特に電力が１ｋＷ以上の電源装置に用いられるものにあっては、１０Ａ〜１５０Ａといった大きな電流が流れることから、例えば下記特許文献１に見られるように、電気抵抗値を小さくして発熱を抑制すべく、平角銅線をエッジワイズ巻きしたコイルが多く用いられている。   Among winding components such as choke coils and reactors incorporated in FA devices and various electronic and electric devices for vehicles, especially those used for power supply devices with power of 1 kW or more, a large current of 10 A to 150 A For example, as shown in Patent Document 1 below, a coil in which a rectangular copper wire is edgewise wound is often used to reduce the electric resistance value and suppress heat generation.

ところで、このような平角銅線を用いた大電流仕様のコイルにあっては、使用時に当該コイルが発熱源となって、部品温度が過度に高くなり、この結果特性の低下や製品寿命の短縮化を招く恐れがあることから、何らかの発熱量の抑制手段あるいは放熱手段を講じる必要がある。   By the way, in such a large current specification coil using a rectangular copper wire, the coil becomes a heat source during use, and the component temperature becomes excessively high. As a result, the characteristics are deteriorated and the product life is shortened. Therefore, it is necessary to take some heat generation suppression means or heat dissipation means.

そこで、下記特許文献２においては、フランジ付きボビン組立体の巻胴部の外周に巻線を設け、上記巻胴部の軸線方向に沿って配置した注形用放熱ベースに前記ボビン組立体を前記フランジ部分にて嵌合し、前記注形用放熱ベースに絶縁性樹脂を注形して、前記巻線下部のみが前記絶縁性樹脂に浸るようにするとともに、磁気コアを前記巻胴部内側に挿置した大電流チョークコイルが提案されている。   Therefore, in the following Patent Document 2, a winding is provided on the outer periphery of the winding body portion of the flanged bobbin assembly, and the bobbin assembly is placed on the casting heat dissipation base disposed along the axial direction of the winding body portion. Fitting at the flange portion, casting an insulating resin on the casting heat dissipation base so that only the lower part of the winding is immersed in the insulating resin, and the magnetic core is placed inside the winding drum An inserted large current choke coil has been proposed.

上記大電流チョークコイルによれば、巻線で発生した熱を、絶縁性樹脂を介して注形用放熱ベースに逃がすことができるという効果が得られる。   According to the large current choke coil, an effect is obtained that the heat generated in the winding can be released to the casting heat dissipation base via the insulating resin.

特開２０１３−４２０２７号公報JP 2013-42027 A 実開平７−７１２３号公報Japanese Utility Model Publication No. 7-7123

しかしながら、上記従来の大電流チョークコイルは、巻胴部の軸線を当該チョークコイルの取付面と平行に配置した、所謂横型の巻線部品であるために、絶縁性樹脂を介して巻胴部に沿って配置した注形用放熱ベースに放熱させることができるものの、コイルの軸線を取付面と直交させた、所謂縦型の巻線部品に対しては、コイルの端部が当該巻線部品の軸線方向の上下部から引き出される構成になるために、上記構成を適用することができない。このため、通常縦型の巻線部品においては、コイル断面積を大きくして発熱量を抑制する構成が採用されているが、大型化を招くという問題点があった。   However, since the conventional large current choke coil is a so-called horizontal winding component in which the axis of the winding drum portion is arranged in parallel with the mounting surface of the choke coil, the winding drum portion is interposed via an insulating resin. Although heat can be radiated to the casting heat radiation base arranged along the coil, the end of the coil is connected to the winding component of the so-called vertical winding component in which the axis of the coil is perpendicular to the mounting surface. Since the configuration is drawn from the upper and lower portions in the axial direction, the above configuration cannot be applied. For this reason, in a normal vertical winding component, a configuration is adopted in which the coil cross-sectional area is increased to suppress the amount of heat generation, but there is a problem in that the size is increased.

また、上記大電流チョークコイルにおいては、巻線下部のみが絶縁性樹脂に浸るように充填しているために、空気中にある巻線上部からの放熱を効率的に行うことができないという欠点もあった。   In addition, since the large current choke coil is filled so that only the lower part of the winding is immersed in the insulating resin, there is a disadvantage that heat radiation from the upper part of the winding in the air cannot be efficiently performed. there were.

本発明は、上記事情に鑑みてなされたものであり、縦型で用いる場合にも、コイルからの発熱を効率的に外部に放熱させることができ、よって熱による特性の低下や製品寿命の短縮化を抑止することができる巻線部品を提供することを課題とするものである。   The present invention has been made in view of the above circumstances, and even when used in a vertical type, the heat generated from the coil can be efficiently dissipated to the outside, so that the characteristics are reduced by heat and the product life is shortened. It is an object of the present invention to provide a winding component that can be prevented from being made.

上記課題を解決するため、請求項１に記載の本発明に係る巻線部品は、平角線をエッジワイズ巻きすることによって形成されたコイルと、このコイルが収納された絶縁用のカバーと、このカバーの端部開口に配置された絶縁用のキャップと、これらカバーおよびキャップの周囲を囲繞するように配置されて閉磁路を形成するコアとを備えてなり、上記カバーは、上記コイルが載置される底板と、上記コイルの外周を囲繞する筒状の外壁部と、上記コイルの内周に挿入される筒状の内壁部とを有する有底二重筒体状に形成され、かつ上記外壁部と内壁部との間に絶縁性樹脂が充填され、上記外壁部には上記外壁部の径方向外方に突出する堰部が形成され、上記堰部は上記堰部以外の上記外壁部よりも高さ寸法が小さく形成され、上記コイルは、上記底板側の端部が上記堰部に沿うように屈曲されて上記端部開口から外方に引き出され、上記引き出された底板側の端部と上記コイルの上端部から引き出された端部とが上記堰部の上縁に配置されていることを特徴とするものである。 In order to solve the above problems, a winding component according to the present invention described in claim 1 includes a coil formed by edgewise winding a rectangular wire, an insulating cover in which the coil is housed, An insulating cap disposed at an end opening of the cover, and a core that is disposed so as to surround the cover and the cap to form a closed magnetic circuit, and the coil is placed on the cover A bottom plate, a cylindrical outer wall portion surrounding the outer periphery of the coil, and a cylindrical inner wall portion inserted into the inner periphery of the coil, and the outer wall An insulating resin is filled between the outer wall portion and the inner wall portion, and a dam portion protruding radially outward of the outer wall portion is formed on the outer wall portion, and the dam portion is formed from the outer wall portion other than the dam portion. also height is formed small, the coil is End of the serial bottom plate side is bent along the above weir portion is drawn outward from the end opening, and the end portion drawn out from an upper end of the end portion and the coil of the pulled-out bottom plate side Is arranged at the upper edge of the weir portion .

また、請求項２に記載の発明は、請求項１に記載の発明において、上記カバー、キャップおよびコアが、筒状のケース内に上記コアを端部の開口部に露出させて収納されていることを特徴とするものである。   According to a second aspect of the present invention, in the first aspect of the present invention, the cover, the cap, and the core are accommodated in a cylindrical case with the core exposed at the opening of the end. It is characterized by this.

さらに、請求項３に記載の発明は、上記絶縁性樹脂が、シリコン系樹脂であることを特徴とするものである。   Furthermore, the invention described in claim 3 is characterized in that the insulating resin is a silicon-based resin.

請求項１〜３のいずれかに記載の発明によれば、コイルを収納する二重筒体状のカバーに底板を形成して環状のカップ形状に構成し、その内部に絶縁性樹脂を注入することにより、コイルの平角線間およびコイルとカバーの内外壁部との間に上記絶縁性樹脂を充填することができるために、コイルからの発熱を、上記絶縁性樹脂を介してカバーから外部に放熱することができる。   According to the invention described in any one of claims 1 to 3, a bottom plate is formed on a double-cylindrical cover that houses a coil to form an annular cup shape, and an insulating resin is injected therein. Therefore, since the insulating resin can be filled between the rectangular wires of the coil and between the coil and the inner and outer wall portions of the cover, the heat generated from the coil is transferred from the cover to the outside via the insulating resin. It can dissipate heat.

しかも、コイルの底板側の端部を、カバーの外壁部に沿うように屈曲してカバーの端部開口から外方に引き出しているために、外壁部におけるコイルの軸線方向の長さ寸法を大きく設定することができ、この結果コイルの略全長を上記絶縁性樹脂で覆うことができる。よって、縦型で用いる場合にも、コイルからの発熱を効率的に外部に放熱させることができ、よって熱による特性の低下や製品寿命の短縮化を抑止することができる。   Moreover, since the end of the coil on the bottom plate side is bent along the outer wall portion of the cover and pulled out from the end opening of the cover, the length of the coil in the axial direction of the outer wall portion is increased. As a result, the substantially entire length of the coil can be covered with the insulating resin. Therefore, even when used in a vertical type, the heat generated from the coil can be efficiently radiated to the outside, so that deterioration of characteristics and shortening of the product life due to heat can be suppressed.

さらに、請求項２に記載の発明のように、上記カバー、キャップおよびコアをケース内に収納する場合に、上記ケースを筒状に形成して、上記コアを端部のケースの開口部に露出されば、この巻線部品を取り付ける際に、取付面にコアを当接させることにより、放熱性を一層高めることができる。   Further, when the cover, the cap and the core are stored in the case as in the invention described in claim 2, the case is formed in a cylindrical shape, and the core is exposed to the opening of the case at the end. Then, when attaching this winding component, heat dissipation can be further enhanced by bringing the core into contact with the attachment surface.

なお、上記絶縁性樹脂としては、請求項３に記載の発明のように、弾性が高く、よって注入・硬化時や使用時の熱膨張によっても周囲の部品に過度の応力を発生させないシリコン系の樹脂が好適である。   In addition, as the insulating resin, as in the invention according to claim 3, it is highly elastic, and therefore, a silicon-based resin that does not generate excessive stress in surrounding parts even during thermal expansion during injection / curing or use. Resins are preferred.

本発明の巻線部品の一実施形態を示す平面視した斜視図である。It is the perspective view seen from the plane which shows one Embodiment of the winding components of this invention. 上記巻線部品の底面視した斜視図である。It is the perspective view which looked at the bottom of the above-mentioned winding component. 上記巻線部品の構成要素を示す分解斜視図である。It is a disassembled perspective view which shows the component of the said winding components. 上記巻線部品のカバー内にコイルを収納した状態を示す斜視図である。It is a perspective view which shows the state which accommodated the coil in the cover of the said winding components. 図４のカバー内に絶縁性樹脂を充填した状態を示す斜視図である。It is a perspective view which shows the state which filled the insulating resin in the cover of FIG.

図１〜図５は、本発明に係る巻線部品を、チョークコイルに適用した一実施形態を示すものである。
このチョークコイルは、図３に示すように、コイル１と、このコイル１が収納された絶縁用のカバー２と、このカバー２の図中上端部に形成される開口部に配置された絶縁用のキャップ３と、カバー２およびキャップ３の周囲を囲繞するように配置されて閉磁路を形成する一対の蝶型コア４と、これらカバー２、キャップ３および蝶型コア４を収納するケース５とから概略構成されたものである。 1 to 5 show an embodiment in which a winding component according to the present invention is applied to a choke coil.
As shown in FIG. 3, the choke coil includes a coil 1, an insulating cover 2 in which the coil 1 is housed, and an insulating member disposed in an opening formed at the upper end of the cover 2 in the figure. A cap 3, a pair of butterfly cores 4 that are arranged so as to surround the cover 2 and the periphery of the cap 3 to form a closed magnetic circuit, and a case 5 that houses the cover 2, the cap 3, and the butterfly core 4. Is a schematic configuration.

ここで、コイル１は、平角銅線をエッジワイズ巻きすることによって形成されたもので、両端部１ａ、１ｂが平面視において交差する位置から接線方向に直線状に引き出されている。また、カバー２は、中央に円形の孔部が穿設された略円環板状の底板６と、この底板６の外周部に立設されてコイル１の外周を軸線方向に覆う外壁部７と、上記孔部に立設された円筒状の内壁部８とが一体に形成された有底二重筒状のものである。   Here, the coil 1 is formed by edgewise winding a rectangular copper wire, and is drawn out linearly in a tangential direction from a position where both end portions 1a and 1b intersect in a plan view. The cover 2 has a substantially annular plate-like bottom plate 6 with a circular hole formed in the center, and an outer wall portion 7 that stands on the outer periphery of the bottom plate 6 and covers the outer periphery of the coil 1 in the axial direction. And the cylindrical inner wall part 8 standingly arranged by the said hole part is a thing with a bottomed double cylinder shape formed integrally.

そして、カバー２の外壁部７は、コイル１の軸線方向の長さ寸法よりも僅かに大きい高さ寸法に形成されるとともに、上記コイル１の両端部１ａ、１ｂが配置される位置に、径方向外方に突出する堰部７ａが形成されている。この堰部７ａは、外壁部７よりも僅かに高さ寸法が小さく形成されており、その下端部は底板６よりも下方に位置する底板６ａによって塞がれている。   And the outer wall part 7 of the cover 2 is formed in the height dimension slightly larger than the length dimension of the axial direction of the coil 1, and it is a diameter in the position where the both ends 1a and 1b of the said coil 1 are arrange | positioned. A weir portion 7a protruding outward in the direction is formed. The dam portion 7 a is formed to have a slightly smaller height than the outer wall portion 7, and its lower end is closed by a bottom plate 6 a located below the bottom plate 6.

なお、底板６ａは、底板６よりも蝶型コア４の背板４ａの厚さ寸法だけ下方に配置されており、図２に示すように、底面視において上記背板４ａの側面のＶ字形状に一致する形状に形成されている。また、底板６ａと径方向に対向する位置にも、底板６ａと同じ高さ位置であって、かつ同様に上記背板４ａの側面のＶ字形状に一致する形状を備えた底板６ｂが形成されている。さらに、このカバー２においては、外壁部７の外周部に、一対の円弧板状のマグネット９が挿入される装着部７ｂが形成されている。   The bottom plate 6a is disposed below the bottom plate 6 by the thickness dimension of the back plate 4a of the butterfly core 4. As shown in FIG. 2, the bottom plate 6a has a V-shape on the side surface of the back plate 4a in the bottom view. It is formed in a shape that matches. In addition, a bottom plate 6b having the same height as the bottom plate 6a and having a shape corresponding to the V-shape of the side surface of the back plate 4a is also formed at a position facing the bottom plate 6a in the radial direction. ing. Further, in the cover 2, a mounting portion 7 b into which a pair of arc plate-shaped magnets 9 are inserted is formed on the outer peripheral portion of the outer wall portion 7.

上記構成からなるカバー２内に、図３および図４に示すように、コイル１が内外壁部７、８間に挿入されることにより収納されている。そして、コイル１の上端部から引き出された端部１ａは、堰部７ａの上縁から外方に引き出されている。他方、コイルの下端部から引き出された端部１ｂは、外壁部７の堰部７ａに沿うように上方に屈曲されて、同様に堰部７ａの上縁から外方に引き出されている。   As shown in FIGS. 3 and 4, the coil 1 is accommodated in the cover 2 having the above-described configuration by being inserted between the inner and outer wall portions 7 and 8. And the edge part 1a pulled out from the upper end part of the coil 1 is pulled out outward from the upper edge of the dam part 7a. On the other hand, the end portion 1b drawn from the lower end portion of the coil is bent upward along the dam portion 7a of the outer wall portion 7, and similarly drawn out from the upper edge of the dam portion 7a.

そして、このケース２内には、シリコン系の絶縁性樹脂１０が充填・硬化されている。具体的には、絶縁性樹脂１０は、外壁部７および堰板７ａと内壁部８との間において底板６、６ａ、６ｂから堰板７ａの上縁付近の高さ寸法まで充填されている。これにより、コイル１は、上端部の１ターンを残した略全長にわたって平角線間および内外周部が、絶縁性樹脂１０によって覆われている。   The case 2 is filled and cured with a silicon-based insulating resin 10. Specifically, the insulating resin 10 is filled between the outer wall portion 7 and the dam plate 7a and the inner wall portion 8 to the height dimension near the upper edge of the dam plate 7a from the bottom plates 6, 6a, 6b. As a result, the coil 1 is covered with the insulating resin 10 between the rectangular wires and the inner and outer peripheral portions over substantially the entire length leaving one turn at the upper end.

以上のように、コイル１が収納されるとともに絶縁性樹脂１０が充填されたケース２の上端開口に、キャップ３が配置されている。このキャップ３は、中央部に挿通孔３ａが形成された円環板状の部材で、外径がカバー２の外壁部７の外径と略等しく、かつ内径がカバー２の内壁部８の外径と略等しい寸法に形成されている。また、キャップ３の上面には、蝶型コア４の背部４ａの側面が係合する一対のＶ字状の案内板３ｂが立設されている。   As described above, the cap 3 is disposed in the upper end opening of the case 2 in which the coil 1 is accommodated and the insulating resin 10 is filled. The cap 3 is an annular plate-like member having an insertion hole 3 a formed in the center, and has an outer diameter substantially equal to the outer diameter of the outer wall 7 of the cover 2 and an inner diameter of the outer wall 8 of the cover 2. It is formed in the dimension substantially equal to the diameter. In addition, a pair of V-shaped guide plates 3 b that are engaged with the side surfaces of the back portion 4 a of the butterfly core 4 are erected on the upper surface of the cap 3.

そして、これらカバー２およびキャップ３の周囲を囲繞するようにして、一対の上記蝶型コア４が配置されている。この蝶型コア４は、カバー２の底板６またはキャップ３と当接する平板状の背部４ａと、この背部４ａの長手方向の両端部に一体成形されて外壁部７に沿って配置される外足４ｂと、これら外足４ｂ間の中央に一体成形されてカバー２の内壁部８内に挿入される円柱状の中足４ｃとから構成されたものである。   The pair of butterfly cores 4 is disposed so as to surround the cover 2 and the cap 3. The butterfly core 4 includes a flat plate-like back portion 4a that comes into contact with the bottom plate 6 or the cap 3 of the cover 2, and an outer leg that is integrally formed at both ends in the longitudinal direction of the back portion 4a and arranged along the outer wall portion 7. 4b and a cylindrical middle leg 4c that is integrally formed at the center between the outer legs 4b and is inserted into the inner wall portion 8 of the cover 2.

これら一対の蝶型コア４は、中足４ｃがキャップ３の挿通孔３ａまたはカバー２の底板６から内壁部８内に挿入され、互いの先端部を当接させるか、あるいは所定のギャップを形成して配置されている。また、外足４ｂは、中足４ｃよりも短い寸法に形成されており、これら外足４ｂ間にカバー２の装着部７ｂに挿入された上記マグネット９が介装されている。   In the pair of butterfly cores 4, the middle leg 4 c is inserted into the inner wall portion 8 from the insertion hole 3 a of the cap 3 or the bottom plate 6 of the cover 2, and the tips of each other are brought into contact with each other or a predetermined gap is formed. Are arranged. Further, the outer leg 4b is formed to be shorter than the middle leg 4c, and the magnet 9 inserted into the mounting portion 7b of the cover 2 is interposed between the outer legs 4b.

さらに、下側の蝶型コア４は、背部４ａがケース２の底板６ａ、６ｂ間に挿入されて、その端面を底板６ａ、６ｂの表面と略同一平面上に位置させて配置されるとともに、上側の蝶型コア４は、背部４ａをキャップ３の案内板３ｂ間に係合させて配置されている。そして、これらカバー２、キャップ３およびコア４の積層体が、絶縁性樹脂からなるケース５内に挿入されている。   Further, the lower butterfly core 4 is disposed with the back portion 4a inserted between the bottom plates 6a and 6b of the case 2 and its end surface positioned substantially on the same plane as the surfaces of the bottom plates 6a and 6b. The upper butterfly core 4 is disposed with the back portion 4 a engaged between the guide plates 3 b of the cap 3. And the laminated body of these covers 2, the cap 3, and the core 4 is inserted in the case 5 which consists of insulating resin.

このケース５は、上記積層体の外周を軸線方向に覆うとともに、両端部が開口した外観略筒状の壁部であって、その軸線方向の長さが上記積層体における軸線方向の長さと略等しくなるように形成されている。これにより、上記積層体は、ケース５の両端開口部に蝶型コア４の背部４ａを露出させて収納されている。   The case 5 is an outer appearance substantially cylindrical wall portion that covers the outer periphery of the laminated body in the axial direction and has both ends opened, and the length in the axial direction is substantially the same as the axial length in the laminated body. It is formed to be equal. Thereby, the laminated body is accommodated in the opening portions at both ends of the case 5 with the back portion 4a of the butterfly core 4 exposed.

また、ケース２の堰部７ａが配置される位置の高さ寸法は、堰部７ａと略等しい寸法に形成されている。そして、このケース５の外周部には、このチョークコイルを図示されない機器類の取付面に固定するための取付部１１が設けられている。   Moreover, the height dimension of the position where the dam part 7a of the case 2 is arrange | positioned is formed in the dimension substantially equal to the dam part 7a. A mounting portion 11 for fixing the choke coil to a mounting surface of equipment (not shown) is provided on the outer peripheral portion of the case 5.

以上の構成からなるチョークコイルによれば、コイル１を収納する二重筒体状のカバーを、底板６、６ａ、６ｂを形成することにより環状のカップ形状に形成し、その内部にシリコン系の絶縁性樹脂１０を注入することにより、コイル１の平角線間およびコイル１とカバー２の内外壁部６、７、７ａとの間に絶縁性樹脂１０を充填しているために、コイル１からの発熱を、絶縁性樹脂１０を介してカバー２およびケース５から当該チョークコイルを取り付ける筐体や空中へと放熱することができる。   According to the choke coil having the above configuration, the double cylindrical cover for housing the coil 1 is formed into an annular cup shape by forming the bottom plates 6, 6a, 6b, and a silicon-based cover is formed inside the cover. By injecting the insulating resin 10, the insulating resin 10 is filled between the rectangular wires of the coil 1 and between the coil 1 and the inner and outer wall portions 6, 7, 7 a of the cover 2. Can be dissipated through the insulating resin 10 from the cover 2 and the case 5 to the casing or the air to which the choke coil is attached.

しかも、コイル１の底板６、６ａ側の端部１ｂを、カバー２の外壁部７における堰部７ａに沿うように上方に屈曲して、堰部７ａの上縁から外方に引き出しているために、外壁部７における堰部７ａの高さ寸法を大きく設定することができる。この結果、コイル１の略全長を絶縁性樹脂１０によって覆うことができ、よって縦型で用いる場合にも、コイル１からの発熱を効率的に外部に放熱させることができる。   Moreover, the end 1b on the bottom plate 6, 6a side of the coil 1 is bent upward along the dam 7a in the outer wall 7 of the cover 2 and pulled out from the upper edge of the dam 7a. Moreover, the height dimension of the weir part 7a in the outer wall part 7 can be set large. As a result, the substantially entire length of the coil 1 can be covered with the insulating resin 10, so that heat generated from the coil 1 can be efficiently radiated to the outside even when the coil 1 is used in a vertical shape.

さらに、カバー２、キャップ３および蝶型コア４からなる積層体を収納するケース５を、筒状に形成することにより、その開口部から蝶型コア４の背板４ａを露出さているために、当該ケース５に設けた取付部１１を用いてこのチョークコイルを取り付ける際に、相手側の取付面に蝶型コア４の背板４ａを当接させることにより、放熱性を一層高めることができる。   Furthermore, since the case 5 that houses the laminated body including the cover 2, the cap 3, and the butterfly core 4 is formed in a cylindrical shape, the back plate 4 a of the butterfly core 4 is exposed from the opening thereof. When the choke coil is mounted using the mounting portion 11 provided on the case 5, the heat dissipation can be further enhanced by bringing the back plate 4a of the butterfly core 4 into contact with the mating mounting surface.

ちなみに、本発明者等が同一の寸法形状のチョークコイルであって、ケース２内に絶縁性樹脂１０を充填したものと、充填しないものとの使用時の温度を計測して比較したところ、ケース２内に絶縁性樹脂１０を充填したものは、充填しないものよりもコイル１の温度が４０％低下した。   By the way, when the inventors measured the temperature at the time of use of the choke coil of the same size and shape, in which the insulating resin 10 was filled in the case 2 and the case where it was not filled, the case was compared. When the insulating resin 10 was filled in 2, the temperature of the coil 1 was 40% lower than that without filling.

したがって、上記チョークコイルによれば、コイル１が発する熱によって特性が低下したり、あるいは製品寿命が短縮化したりすることを効果的に抑止することができる。   Therefore, according to the choke coil, it is possible to effectively prevent the characteristics from being deteriorated by the heat generated by the coil 1 or the product life from being shortened.

なお、上記実施形態においては、本発明に係る巻線部品をチョークコイルに適用した場合についてのみ説明したが、本発明はこれに限定されるものではなく、例えばトランス等の他の巻線部品にも同様に適用することが可能である。   In the above embodiment, only the case where the winding component according to the present invention is applied to a choke coil has been described. However, the present invention is not limited to this, and other winding components such as a transformer are used. Can be similarly applied.

１ コイル
１ａ、１ｂ 端部
２ ケース
３ キャップ
４ 蝶型コア
６ 底板
７ 外壁部
７ａ 堰部（外壁部）
８ 内壁部
１０ 絶縁性樹脂 DESCRIPTION OF SYMBOLS 1 Coil 1a, 1b End part 2 Case 3 Cap 4 Butterfly core 6 Bottom plate 7 Outer wall part 7a Weir part (outer wall part)
8 Inner wall 10 Insulating resin

Claims (3)

平角線をエッジワイズ巻きすることによって形成されたコイルと、このコイルが収納された絶縁用のカバーと、このカバーの端部開口に配置された絶縁用のキャップと、これらカバーおよびキャップの周囲を囲繞するように配置されて閉磁路を形成するコアとを備えてなり、
上記カバーは、上記コイルが載置される底板と、上記コイルの外周を囲繞する筒状の外壁部と、上記コイルの内周に挿入される筒状の内壁部とを有する有底二重筒体状に形成され、かつ上記外壁部と内壁部との間に絶縁性樹脂が充填され、
上記外壁部には上記外壁部の径方向外方に突出する堰部が形成され、
上記堰部は上記堰部以外の上記外壁部よりも高さ寸法が小さく形成され、
上記コイルは、上記底板側の端部が上記堰部に沿うように屈曲されて上記端部開口から外方に引き出され、上記引き出された底板側の端部と上記コイルの上端部から引き出された端部とが上記堰部の上縁に配置されていることを特徴とする巻線部品。 A coil formed by edgewise winding a rectangular wire, an insulating cover in which the coil is accommodated, an insulating cap disposed in an end opening of the cover, and the periphery of the cover and the cap A core that is arranged to surround and forms a closed magnetic circuit,
The cover has a bottomed double cylinder having a bottom plate on which the coil is placed, a cylindrical outer wall part surrounding the outer periphery of the coil, and a cylindrical inner wall part inserted into the inner periphery of the coil Formed in a body shape and filled with an insulating resin between the outer wall portion and the inner wall portion ,
The outer wall portion is formed with a dam portion protruding outward in the radial direction of the outer wall portion,
The dam part is formed smaller in height than the outer wall part other than the dam part,
The coil is bent so that the end on the bottom plate side is along the dam portion, and is drawn outward from the end opening, and is drawn out from the drawn end on the bottom plate side and the upper end of the coil. A winding component, wherein an end portion is disposed on an upper edge of the dam portion . 上記カバー、キャップおよびコアは、筒状のケース内に上記コアを端部の開口部に露出させて収納されていることを特徴とする請求項１に記載の巻線部品。   The winding part according to claim 1, wherein the cover, the cap, and the core are housed in a cylindrical case with the core exposed in an opening at an end. 上記絶縁性樹脂は、シリコン系樹脂であることを特徴とする請求項１または２に記載の巻線部品。   The winding component according to claim 1, wherein the insulating resin is a silicon-based resin.
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