JP2008205153A - Transformer - Google Patents

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JP2008205153A
JP2008205153A JP2007038994A JP2007038994A JP2008205153A JP 2008205153 A JP2008205153 A JP 2008205153A JP 2007038994 A JP2007038994 A JP 2007038994A JP 2007038994 A JP2007038994 A JP 2007038994A JP 2008205153 A JP2008205153 A JP 2008205153A
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winding
groove
transformer
grooves
hole
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JP4973230B2 (en
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Wataru Tabata
亘 田畑
Chiaki Tatsuoka
千秋 立岡
Tsukasa Suzuki
司 鈴木
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a transformer whose heat dissipating characteristics are improved by providing bulkheads, which separate grooves for winding at the outer periphery of a bobbin, with slits. <P>SOLUTION: In order to achieve its purpose, the transformer includes a bobbin 16, provided on the circumference with a plurality of grooves for windings 12, 13 and venting grooves 21, 22 while having a through hole 15, first and second wirings 11, 13 which are wound around the wiring grooves 12, 13 and a magnetic core 17 inserted into the through hole 15 while the venting grooves 21, 22 are arranged at the end side of the bobbin 16 with respect to the wiring grooves 12, 13 and the bulkheads 23, 24, which separate the venting grooves 21, 22 from the winding grooves 12, 13, are provided with the slits 25, 26 in the rising direction of the bulkheads 23, 24. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は各種電子機器に使用されるトランスに関するものである。   The present invention relates to a transformer used in various electronic devices.

トランスは各種電子機器、通信機器に多く使用されており、特にディスプレイ用電源回路等に用いられる共振トランスの用途においては、薄型化と共に放熱性の良さが要求されている。   Transformers are widely used in various electronic devices and communication devices. Particularly in applications of resonant transformers used in display power supply circuits and the like, thinness and good heat dissipation are required.

ここで従来のトランスの分解斜視図を図１１に、断面図を図１２に示す。第１の巻線１を巻回した第１の巻線溝２と、第２の巻線３を巻回した第２の巻線溝４とを外周に設け、貫通孔５を有したボビン６を備えている。そして磁心７の磁脚８をボビン６の貫通孔５の両側からそれぞれ挿入し、磁気ギャップ９を隔て磁脚８を対向させて配置することで、トランス１０を構成していた。   FIG. 11 is an exploded perspective view of a conventional transformer, and FIG. 12 is a cross-sectional view of the conventional transformer. A bobbin 6 having a first winding groove 2 wound with a first winding 1 and a second winding groove 4 wound with a second winding 3 on the outer periphery and having a through hole 5 It has. The transformer 10 is configured by inserting the magnetic legs 8 of the magnetic core 7 from both sides of the through-hole 5 of the bobbin 6 and arranging the magnetic legs 8 facing each other with the magnetic gap 9 therebetween.

なお、この出願の発明に関する先行技術文献情報としては例えば特許文献１が知られている。
特開２０００−３５７６１７号公報 For example, Patent Document 1 is known as prior art document information relating to the invention of this application.
JP 2000-357617 A

従来のトランスにおいては、第１の巻線１および第２の巻線３で発生した熱は、第１の巻線１および第２の巻線３の外周部に相当する露出部から放出されるものが大きな割合を占めていた。   In the conventional transformer, heat generated in the first winding 1 and the second winding 3 is released from an exposed portion corresponding to the outer peripheral portions of the first winding 1 and the second winding 3. Things accounted for a large percentage.

しかしながら、第１の巻線１および第２の巻線３を発熱させる要因である漏れ磁束（図示せず）は、主に磁気ギャップ９や磁脚８の近傍、特に磁気ギャップ９の近傍において発生するため、第１の巻線１および第２の巻線３の磁脚８側である内周側での発熱量が大きいものであった。   However, leakage magnetic flux (not shown), which is a factor that causes the first winding 1 and the second winding 3 to generate heat, is mainly generated in the vicinity of the magnetic gap 9 and the magnetic leg 8, particularly in the vicinity of the magnetic gap 9. Therefore, the amount of heat generated on the inner circumference side, which is the magnetic leg 8 side, of the first winding 1 and the second winding 3 is large.

そのため、従来のトランスは、発熱量の大きい内周側で発生した熱を放出し難く、放熱性が低いものであった。   Therefore, the conventional transformer is difficult to release the heat generated on the inner peripheral side where the heat generation amount is large, and has low heat dissipation.

そこで本発明は、放熱特性を向上させることを目的とするものである。   Therefore, the present invention aims to improve heat dissipation characteristics.

そしてこの目的を達成するために、外周に複数の巻線溝と通気溝とを設け、貫通孔を有したボビンと、前記巻線溝に巻回した第１、第２の巻線と、前記貫通孔に挿入した磁心とを備え、前記通気溝は前記巻線溝に対し前記ボビン端部側に配置し、前記通気溝と前記巻線溝を隔てる隔壁には、この隔壁の屹立方向にスリットを設けたことを特徴としたものである。   In order to achieve this object, a plurality of winding grooves and ventilation grooves are provided on the outer periphery, a bobbin having a through hole, first and second windings wound around the winding groove, A magnetic core inserted into the through hole, the ventilation groove is disposed on the bobbin end side with respect to the winding groove, and a partition that separates the ventilation groove and the winding groove is slit in an upright direction of the partition It is characterized by having provided.

本発明によれば、ボビン外周の巻線溝を隔てる隔壁にスリットを設けたことによって、放熱特性が向上するものである。   According to the present invention, the slits are provided in the partition walls separating the winding grooves on the outer periphery of the bobbin, thereby improving the heat dissipation characteristics.

以下、本発明の一実施形態におけるトランスを、図面を用いて説明する。図１に示す如く、第１の巻線１１を巻回した第１の巻線溝１２と、第２の巻線１３を巻回した第２の巻線溝１４とを外周に備え、貫通孔１５を有したボビン１６を設ける。そして磁心１７の磁脚１８をボビン１６の貫通孔１５の両側からそれぞれ挿入し、図２に示す如く磁気ギャップ１９を隔て対向させて配置することで、図１に示すトランス２０を構成していた。この図においては磁心１７をＥ字型磁心を組み合わせるものとしているが、コ字型磁心（図示せず）を組み合わせて、一方の磁脚（図示せず）を貫通孔１５に挿入しても構わない。   Hereinafter, a transformer according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a first winding groove 12 around which the first winding 11 is wound and a second winding groove 14 around which the second winding 13 is wound are provided on the outer periphery, and the through hole A bobbin 16 having 15 is provided. Then, the magnetic legs 18 of the magnetic core 17 are inserted from both sides of the through-hole 15 of the bobbin 16, and arranged so as to face each other with a magnetic gap 19 therebetween as shown in FIG. 2, thereby constituting the transformer 20 shown in FIG. . In this figure, the magnetic core 17 is combined with an E-shaped magnetic core, but one of the magnetic legs (not illustrated) may be inserted into the through-hole 15 by combining a U-shaped magnetic core (not illustrated). Absent.

ここで、図２に示す第１の通気溝２１および第２の通気溝２２を、貫通孔１５の軸方向において、第１の巻線溝１２および第２の巻線溝１４に対しボビン１６の端部側に配置している。   Here, the first ventilation groove 21 and the second ventilation groove 22 shown in FIG. 2 are arranged in the axial direction of the through-hole 15 with respect to the first winding groove 12 and the second winding groove 14. It is arranged on the end side.

そして、図１に示す第１の通気溝２１と第１の巻線溝１２とを隔てる隔壁２３、および第２の通気溝２２と第２の巻線溝１４とを隔てる隔壁２４にはスリット２５，２６を設けている。   Then, the partition wall 23 that separates the first ventilation groove 21 and the first winding groove 12 and the partition wall 24 that separates the second ventilation groove 22 and the second winding groove 14 shown in FIG. , 26 are provided.

また、スリット２５，２６は、通気溝２１，２２における断面図である図３に示す如く隔壁２３，２４の屹立方向に設けるのが、図１に示すボビン１６の成型における作業性や容易性を考慮した上で最も好ましい。   In addition, the slits 25 and 26 are provided in the upright direction of the partition walls 23 and 24 as shown in FIG. 3 which is a cross-sectional view of the ventilation grooves 21 and 22, so that workability and ease in molding the bobbin 16 shown in FIG. It is most preferable after consideration.

上記構成の本実施形態におけるトランスについて、以下その作用および効果を説明する。図２に示すように、トランスの動作時には磁心１７や、特に磁気ギャップ１９から漏洩する漏れ磁束により、第１の巻線１１および第２の巻線１３が発熱し易くなる。この発熱量は、漏れ磁束の多く存在する第１の巻線１１および第２の巻線１３の磁心１７側、即ち内周側において大きくなるものである。   The operation and effect of the transformer of the present embodiment having the above configuration will be described below. As shown in FIG. 2, the first winding 11 and the second winding 13 are likely to generate heat due to leakage magnetic flux leaking from the magnetic core 17 and particularly the magnetic gap 19 during operation of the transformer. This amount of heat generation increases on the magnetic core 17 side, that is, the inner peripheral side of the first winding 11 and the second winding 13 where a large amount of leakage magnetic flux exists.

そこで、図３に示すように隔壁２３，２４の屹立方向にスリット２５，２６を設けることにより、第１の巻線１１および第２の巻線１３の内周側が、図２に示す通気溝２１，２２側で部分的に露出することとなり、漏れ磁束に起因する発熱による熱を放出しやすくなる。   Therefore, as shown in FIG. 3, by providing slits 25 and 26 in the upright direction of the partition walls 23 and 24, the inner peripheral side of the first winding 11 and the second winding 13 is connected to the ventilation groove 21 shown in FIG. , 22 partly exposed, and it becomes easy to release heat due to heat generation caused by leakage magnetic flux.

さらに、図２に示す第１の通気溝２１および第２の通気溝２２は貫通孔１５を軸とする周回方向に設けていて、通気溝２１，２２にはその周回方向に通気を妨げる障害がないため、第１の巻線１１および第２の巻線１３から放出された熱を流出させ易くすることとなる。   Further, the first ventilation groove 21 and the second ventilation groove 22 shown in FIG. 2 are provided in the circumferential direction with the through hole 15 as an axis, and the ventilation grooves 21 and 22 have an obstacle that prevents ventilation in the circumferential direction. Therefore, the heat released from the first winding 11 and the second winding 13 can be easily discharged.

これらのことから、トランスの温度が過度に上昇することによるトランス自身の信頼性の低下や、この熱の放射に伴う周囲のデバイスに及ぼす悪影響を抑制することもできるものである。   From these facts, it is possible to suppress a decrease in reliability of the transformer itself due to an excessive increase in the temperature of the transformer and an adverse effect on surrounding devices due to the radiation of this heat.

ここで、図３におけるスリット２５，２６は隔壁２３，２４とほぼ同等の幅としたが、図４に示す如く隔壁２３，２４よりも、スリット２５，２６の幅の方が大きい状態となっても構わない。当然ながら、この状態は放熱性がより効果的に発揮できるものであり、隔壁２３，２４の強度が保てるものであれば、隔壁２３，２４は狭い幅であることに問題はない。   Here, although the slits 25 and 26 in FIG. 3 have substantially the same width as the partition walls 23 and 24, the slits 25 and 26 have a larger width than the partition walls 23 and 24 as shown in FIG. It doesn't matter. Naturally, in this state, heat dissipation can be more effectively exhibited, and there is no problem that the partition walls 23 and 24 have a narrow width as long as the strength of the partition walls 23 and 24 can be maintained.

また、図５に示す如くスリット２５，２６の深さは深いほど放熱の効果は大きくなることから、スリット２５，２６の下部方向は巻線溝底面２７まで達するものがより望ましい。   Further, as the depth of the slits 25 and 26 increases as the depth of the slits 25 and 26 increases, it is more desirable that the lower direction of the slits 25 and 26 reaches the bottom surface 27 of the winding groove.

これは、先にも述べたように第１の巻線１１および第２の巻線１３は、より内周側で発熱量が大きくなることから、最も発熱量の大きくなる最内周側まで、第１の巻線１１および第２の巻線１３を露出させることで放熱効果を大きくするものである。よってスリット２５，２６の深さは深ければ深いほど放熱の効果が大きくなるものである。   As described above, since the first winding 11 and the second winding 13 have a larger amount of heat generation on the inner peripheral side, the innermost winding side where the amount of heat generation is the largest is Exposing the first winding 11 and the second winding 13 increases the heat dissipation effect. Therefore, the deeper the slits 25 and 26, the greater the heat dissipation effect.

さらに、巻線溝底面２７を直線状とせずに、概ね貫通孔１５の周回方向の波状にすることや、あるいは巻線溝底面２７に貫通孔１５の軸方向に底部溝（図示せず）を設け、スリット２５，２６の巻線溝底面２７に連結するのもよい。これにより、第１の巻線１１および第２の巻線１３の最内周側の放熱効果をより大きくすることができる。   Further, the winding groove bottom surface 27 is not made straight, but is generally waved in the circumferential direction of the through hole 15, or a bottom groove (not shown) is formed in the winding groove bottom surface 27 in the axial direction of the through hole 15. It may be provided and connected to the winding groove bottom surface 27 of the slits 25 and 26. Thereby, the heat dissipation effect on the innermost peripheral side of the first winding 11 and the second winding 13 can be further increased.

また、図２に示すように、第１の巻線１１と第２の巻線１３との間には、これらを隔てる中間隔壁２８を設け、さらにこの中間隔壁２８の頂部には貫通孔１５を軸として周回する方向に隔壁溝２９を設けることにより、放熱の効果を持たせるのもよい。第１の巻線１１と第２の巻線１３との間に、それらを隔てる何らかを備えることは絶縁性の確保等の観点から通常に行われるものであるが、中間隔壁２８が位置する部位は第１の巻線１１と第２の巻線１３とから発せられる熱が集中し易い部分でもある。   As shown in FIG. 2, an intermediate partition wall 28 is provided between the first winding 11 and the second winding 13, and a through hole 15 is formed at the top of the intermediate partition wall 28. It is also possible to provide a heat dissipation effect by providing the partition groove 29 in a direction that circulates as an axis. The provision of something separating the first winding 11 and the second winding 13 is usually performed from the viewpoint of ensuring insulation, but the intermediate partition wall 28 is located. The portion is also a portion where heat generated from the first winding 11 and the second winding 13 tends to concentrate.

よって、中間隔壁２８の頂部に隔壁溝２９を設けることにより中間隔壁２８の表面積を大きくし、加えて通気性を良くすることにより、放熱性を向上させることが可能となる。   Therefore, by providing the partition groove 29 at the top of the intermediate partition wall 28, the surface area of the intermediate partition wall 28 is increased, and the air permeability is improved, thereby improving the heat dissipation.

また図６に示す如く、第１の巻線１１と第２の巻線１３との間には、これらを隔てる２つ以上の中間隔壁３０を設け、複数の中間隔壁３０の間には絶縁溝３１を設けることにより、上記の放熱の効果を更に向上させることが可能となる。これは、中間隔壁３０が複数となることにより、中間隔壁３０の表面積を非常に大きく得ることが可能となるため、放熱の効果が向上するものである。   In addition, as shown in FIG. 6, two or more intermediate partitions 30 are provided between the first winding 11 and the second winding 13, and an insulating groove is provided between the plurality of intermediate partitions 30. By providing 31, it becomes possible to further improve the effect of the heat dissipation. This is because the surface area of the intermediate partition wall 30 can be made very large by providing a plurality of intermediate partition walls 30, so that the heat dissipation effect is improved.

ここで、図１に示す第１の巻線１１および第２の巻線１３と磁心１７との絶縁性を高める対策としてボビン１６と磁心１７は図７に示す如く、ケース３２を介して組み合わせる方法がある。   Here, as a measure for enhancing the insulation between the first winding 11 and the second winding 13 and the magnetic core 17 shown in FIG. 1, the bobbin 16 and the magnetic core 17 are combined through a case 32 as shown in FIG. There is.

この場合、ケース３２に開口部３３を設けることにより放熱性を向上させることは一般的であるが、放熱性を向上させる手段として図２に示す中間隔壁２８の隔壁溝２９に対し、図８に示す如く嵌合状態とする凸部３４をケース３２の内面側に設ける。そして、隔壁溝２９と凸部３４とを少なくともそれらの一部において密着状態とし、嵌合することにより第１の巻線１１および第２の巻線１３から発せられた熱は、中間隔壁２８から凸部３４へ、そして凸部３４からケース３２へと熱の伝導が行われ易くなる。   In this case, it is common to improve the heat dissipation by providing the opening 33 in the case 32. However, as a means for improving the heat dissipation, the partition groove 29 of the intermediate partition 28 shown in FIG. As shown in the drawing, a convex portion 34 that is fitted is provided on the inner surface side of the case 32. Then, heat generated from the first winding 11 and the second winding 13 by fitting the partition groove 29 and the convex portion 34 at least in a part thereof and fitting them from the intermediate partition 28 Heat conduction is easily performed to the convex portion 34 and from the convex portion 34 to the case 32.

その結果、ケース３２を備えた場合においても放熱性を間接的な形態で確保することができるものである。   As a result, even when the case 32 is provided, heat dissipation can be ensured in an indirect form.

この隔壁溝２９と凸部３４とを少なくともそれらの一部において密着状態とし、嵌合することは上記の効果を得ると同時に、第１の巻線１１と第２の巻線１３との沿面距離を長くし、耐電圧に対する効果を有するものでもある。   When the partition groove 29 and the projecting portion 34 are brought into close contact with each other at least in a part thereof and are fitted, the creeping distance between the first winding 11 and the second winding 13 is obtained at the same time as obtaining the above effect. This also has an effect on withstand voltage.

ケース３２を介して組み合わせる方法としては、図６に示す複数の中間隔壁３０の間の絶縁溝３１に対し、図９に示す如く嵌合する凸部３５をケース３２の内面側に設ける。   As a method of combining through the case 32, a convex portion 35 that fits as shown in FIG. 9 is provided on the inner surface side of the case 32 with respect to the insulating grooves 31 between the plurality of intermediate partitions 30 shown in FIG. 6.

そして、絶縁溝３１と凸部３５とを少なくともそれらの一部において密着状態とし、嵌合することにより第１の巻線１１および第２の巻線１３から発せられた熱は、中間隔壁３０から凸部３５へ、そして凸部３５からケース３２へと熱の伝導が行われ易くなる。   Then, heat generated from the first winding 11 and the second winding 13 by fitting the insulating groove 31 and the convex portion 35 in at least a part thereof and fitting them from the intermediate partition wall 30. Heat conduction is easily performed to the convex portion 35 and from the convex portion 35 to the case 32.

その結果、ケース３２を備えた場合においても放熱性を間接的な形態で確保することができるものである。   As a result, even when the case 32 is provided, heat dissipation can be ensured in an indirect form.

この絶縁溝３１と凸部３５とを少なくともそれらの一部において密着状態とし、嵌合することは上記の効果を得ると同時に、第１の巻線１１と第２の巻線１３との沿面距離を長くし、耐電圧に対する効果を有するものでもある。しかもこの場合、絶縁溝３１は第１の巻線１１と第２の巻線１３との配置を離れた状態にすることで十分な幅を得ることも可能であるので、中間隔壁３０の幅を十分に確保できる関係で凸部３５のＤ寸法（図９）を大きくすることも可能となる。この結果、絶縁溝３１と凸部３５とを少なくともそれらの一部において密着状態とできる領域も大きくすることが可能となるので、より熱の伝導が行われ易くなり、的確に放熱性を間接的な形態で確保することができるものである。   When the insulating groove 31 and the convex portion 35 are brought into close contact with each other and are fitted, the above-described effect is obtained, and at the same time, the creepage distance between the first winding 11 and the second winding 13 This also has an effect on withstand voltage. In addition, in this case, the insulating groove 31 can obtain a sufficient width by disposing the first winding 11 and the second winding 13 apart from each other. It is also possible to increase the D dimension (FIG. 9) of the convex portion 35 in a sufficiently secure relationship. As a result, it is possible to increase a region where the insulating groove 31 and the convex portion 35 can be in close contact with each other at least in a part thereof, so that heat conduction is facilitated and accurate heat dissipation is indirectly achieved. Can be ensured in various forms.

さらに図１０に示す如く、３つの中間隔壁３０を設けることで上記の場合と同様の経路により第１の巻線１１および第２の巻線１３から発せられた熱は、ケース３２へと熱の伝導が行われ易くなる。その結果、放熱性の間接的な形態での確保が一段と容易となるものである。当然ながら、第１の巻線１１と第２の巻線１３との沿面距離を長くし、耐電圧に対する効果を有するものでもある。   Further, as shown in FIG. 10, by providing the three intermediate partition walls 30, the heat generated from the first winding 11 and the second winding 13 through the same path as in the above case is transferred to the case 32. Conduction is facilitated. As a result, it is much easier to ensure heat dissipation in an indirect form. Naturally, the creepage distance between the first winding 11 and the second winding 13 is increased, and this has an effect on the withstand voltage.

本発明のトランスは、放熱性を良くすることによりトランスおよび周囲のデバイスの温度上昇を抑制する効果を有し、トランスを使用の各種電子回路において有用である。   The transformer of the present invention has an effect of suppressing the temperature rise of the transformer and surrounding devices by improving heat dissipation, and is useful in various electronic circuits using the transformer.

本発明のトランスの一実施形態を示す分解斜視図The exploded perspective view showing one embodiment of the transformer of the present invention 本発明のトランスの一実施形態を示す貫通孔の軸方向の断面図Sectional drawing of the axial direction of the through-hole which shows one Embodiment of the trans | transformer of this invention 本発明のトランスの一実施形態を示す貫通孔の軸と垂直方向の断面図Sectional drawing perpendicular to the axis | shaft of a through-hole which shows one Embodiment of the transformer of this invention 本発明のトランスの一実施形態を示す貫通孔の軸と垂直方向の断面図Sectional drawing perpendicular to the axis | shaft of a through-hole which shows one Embodiment of the transformer of this invention 本発明のトランスの一実施形態を示す貫通孔の軸と垂直方向の断面図Sectional drawing perpendicular to the axis | shaft of a through-hole which shows one Embodiment of the transformer of this invention 本発明のトランスの一実施形態を示す貫通孔の軸方向の拡大断面図The expanded sectional view of the axial direction of the through-hole which shows one Embodiment of the transformer of this invention 本発明のトランスの一実施形態を示す斜視図The perspective view which shows one Embodiment of the trans | transformer of this invention 本発明のトランスの一実施形態を示す貫通孔の軸と垂直方向の拡大断面図The expanded sectional view of the direction perpendicular to the axis of the through hole showing one embodiment of the transformer of the present invention 本発明のトランスの一実施形態を示す貫通孔の軸と垂直方向の拡大断面図The expanded sectional view of the direction perpendicular to the axis of the through hole showing one embodiment of the transformer of the present invention 本発明のトランスの一実施形態を示す貫通孔の軸と垂直方向の断面図Sectional drawing perpendicular to the axis | shaft of a through-hole which shows one Embodiment of the transformer of this invention 従来のトランスの分解斜視図Exploded perspective view of a conventional transformer 従来のトランスの断面図Cross section of a conventional transformer

符号の説明Explanation of symbols

１１ 第１の巻線
１２ 第１の巻線溝
１３ 第２の巻線
１４ 第２の巻線溝
１５ 貫通孔
１６ ボビン
１７ 磁心
１８ 磁脚
２１ 第１の通気溝
２２ 第２の通気溝
２３，２４ 隔壁
２５，２６ スリット DESCRIPTION OF SYMBOLS 11 1st winding 12 1st winding groove 13 2nd winding 14 2nd winding groove 15 Through-hole 16 Bobbin 17 Magnetic core 18 Magnetic leg 21 1st ventilation groove 22 2nd ventilation groove 23, 24 Bulkhead 25, 26 Slit

Claims (6)

外周に複数の巻線溝と通気溝とを設け、貫通孔を有したボビンと、
前記巻線溝に巻回した第１、第２の巻線と、
前記貫通孔に挿入した磁心とを備え、
前記通気溝は前記巻線溝に対し前記ボビン端部側に配置し、
前記通気溝と前記巻線溝を隔てる隔壁には、
この隔壁の屹立方向にスリットを設けた
トランス。 A bobbin having a plurality of winding grooves and ventilation grooves on the outer periphery and having a through hole;
First and second windings wound in the winding groove;
A magnetic core inserted into the through hole,
The ventilation groove is disposed on the bobbin end side with respect to the winding groove,
In the partition wall separating the ventilation groove and the winding groove,
Transformer with slits in the vertical direction of this partition. スリットの下部は、
第１、第２の巻線の最内周側にまで延伸した
請求項１に記載のトランス。 The bottom of the slit
The transformer according to claim 1, wherein the transformer extends to the innermost peripheral side of the first and second windings. 第１の巻線を巻回した第１の巻線溝と、第２の巻線を巻回した第２の巻線溝との間には中間隔壁を配置し、
前記中間隔壁の頂部には貫通孔を周回する方向の隔壁溝を設けた
請求項１に記載のトランス。 An intermediate partition wall is disposed between the first winding groove wound with the first winding and the second winding groove wound with the second winding,
The transformer according to claim 1, wherein a partition groove in a direction around the through hole is provided at a top portion of the intermediate partition. 第１の巻線を巻回した第１の巻線溝と、第２の巻線を巻回した第２の巻線溝との間には複数の中間隔壁を配置し、
この複数の中間隔壁の間には絶縁溝を設けた
請求項１に記載のトランス。 A plurality of intermediate partitions are arranged between the first winding groove wound with the first winding and the second winding groove wound with the second winding,
The transformer according to claim 1, wherein an insulating groove is provided between the plurality of intermediate partitions. ボビンと第１、第２の巻線とを覆う外装ケースを設け、
この外装ケースは隔壁溝に嵌合する凸部を有する
請求項３に記載のトランス。 An exterior case that covers the bobbin and the first and second windings is provided,
The transformer according to claim 3, wherein the outer case has a convex portion that fits into the partition groove. ボビンと第１、第２の巻線とを覆う外装ケースを設け、
この外装ケースは絶縁溝に嵌合する凸部を有する
請求項４に記載のトランス。 An exterior case that covers the bobbin and the first and second windings is provided,
The transformer according to claim 4, wherein the outer case has a convex portion that fits into the insulating groove.
JP2007038994A 2007-02-20 2007-02-20 Trance Expired - Fee Related JP4973230B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8289120B2 (en) 2010-02-17 2012-10-16 Kabushiki Kaisha Toshiba Electronic component, vehicle and electronic apparatus
JP2017163052A (en) * 2016-03-10 2017-09-14 株式会社ダイヘン Coil bobbin, coil, and transformer including the same
JP2019021869A (en) * 2017-07-21 2019-02-07 Tdk株式会社 Coil device

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PL3221872T3 (en) * 2014-11-21 2020-11-16 Abb Power Grids Switzerland Ag Electrical insulation system and electromagnetic induction device comprising the same

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JPS61166516U (en) * 1985-04-04 1986-10-16
JPH0313720U (en) * 1989-06-27 1991-02-12
JPH09306760A (en) * 1996-05-20 1997-11-28 Hitachi Media Electron:Kk High-voltage transformer
JP2000228318A (en) * 1999-02-04 2000-08-15 Matsushita Electric Ind Co Ltd Converter transformer
JP2001237125A (en) * 2000-02-24 2001-08-31 Tdk Corp Coil bobbin and transformer
JP2003086434A (en) * 2001-06-29 2003-03-20 Tabuchi Electric Co Ltd Electromagnetic inductor
JP2006147885A (en) * 2004-11-19 2006-06-08 Minebea Co Ltd High voltage transformer

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JPS50103478U (en) * 1974-01-28 1975-08-26
JPS61166516U (en) * 1985-04-04 1986-10-16
JPH0313720U (en) * 1989-06-27 1991-02-12
JPH09306760A (en) * 1996-05-20 1997-11-28 Hitachi Media Electron:Kk High-voltage transformer
JP2000228318A (en) * 1999-02-04 2000-08-15 Matsushita Electric Ind Co Ltd Converter transformer
JP2001237125A (en) * 2000-02-24 2001-08-31 Tdk Corp Coil bobbin and transformer
JP2003086434A (en) * 2001-06-29 2003-03-20 Tabuchi Electric Co Ltd Electromagnetic inductor
JP2006147885A (en) * 2004-11-19 2006-06-08 Minebea Co Ltd High voltage transformer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8289120B2 (en) 2010-02-17 2012-10-16 Kabushiki Kaisha Toshiba Electronic component, vehicle and electronic apparatus
JP2017163052A (en) * 2016-03-10 2017-09-14 株式会社ダイヘン Coil bobbin, coil, and transformer including the same
JP2019021869A (en) * 2017-07-21 2019-02-07 Tdk株式会社 Coil device

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