JP2012234875A - Winding component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems of large line capacity and significant deterioration in high frequency characteristics of a conventional winding component using rectangular wire, which are caused by a narrow spacing between conductors due to close winding of insulation-coated conducting wire and by the large area of facing surfaces of neighboring conducting wires.SOLUTION: A winding component is made by an alpha-wound or edgewise-wound conducting wire having a rectangular cross section with insulation coating applied on its surface. Projecting portions are formed on at least one of the surfaces which face each other in the overlapping direction of the conducting wire. Thereby, the line capacity is reduced and high frequency characteristics are enhanced.

Description

本発明は、平角線を用い、この平角線を巻線した巻線部品に関する。   The present invention relates to a winding component using a rectangular wire and wound with the rectangular wire.

巻線と巻線の間の不要な隙間を少なくすることができ、巻線の断面に占める導体の割合（占積率）を大きくすることができることから、巻線部品の巻線に、断面が円形の丸線の代わりに、断面が四角形状の平角線を用いられている。
平角線は、断面が円形状の銅線からなる母線を伸線ダイスに通して、所定の断面積になるまで引き抜き加工し、圧延ローラにて断面が四角形状に圧延される。そして、焼鈍の後に、ポリウレタン等の絶縁被覆を塗布、乾燥し、最後に加温して絶縁被覆を焼付けている。 Unnecessary gaps between the windings can be reduced, and the proportion of the conductor (space factor) in the winding cross section can be increased. Instead of a circular round line, a rectangular wire with a square cross section is used.
The flat wire is drawn by drawing a bus bar made of a copper wire having a circular cross section through a wire drawing die until a predetermined cross sectional area is obtained, and the cross section is rolled into a square shape by a rolling roller. After the annealing, an insulating coating such as polyurethane is applied and dried, and finally heated to burn the insulating coating.

特開平６−３０２２３７号公報JP-A-6-302237

図４は、従来の巻線部品の実施例を示す図である。図４（ａ）は、巻線として、断面が四角形状の導線５１を用い、この導線５１の幅方向に巻いた、所謂エッジワイズ巻きした巻線部品５０ａを示し、図４（ｂ）は図４（ａ）の断面図を示す。
図４（ｃ）は巻線として、断面が四角形状の導線５１を用い、この導線５１の厚さ方向に巻いた、所謂アルファ巻きした巻線部品５０ｂを示し、図４（ｄ）は図４（ｃ）の断面図を示す。
この導線５１は、断面が略四角形状の導体５２を厚さｄ_０の絶縁被覆５３で被覆して導線としたものが用いられる。図４（ｂ）と図４（ｄ）に示すように、平角線を用いた導線５１で巻線部品を作製した場合は、巻線の導体と導体との間の間隔は２ｄ_０となる。 FIG. 4 is a diagram showing an example of a conventional winding component. FIG. 4A shows a so-called edgewise-wound winding component 50a wound in the width direction of the conducting wire 51 using a conducting wire 51 having a quadrangular cross section as a winding, and FIG. Sectional drawing of 4 (a) is shown.
FIG. 4C shows a so-called alpha-winding winding component 50b in which a conducting wire 51 having a square cross section is used as a winding and wound in the thickness direction of the conducting wire 51, and FIG. Sectional drawing of (c) is shown.
The conductor 51, which cross section is a conductor to cover the substantially rectangular conductor 52 with an insulating coating 53 of thickness d ₀ is used. As shown in FIG. 4 (d) 4 and (b), when manufactured winding parts lead 51 using a flat wire, the spacing between the conductors and the conductor of the winding becomes 2d _0.

一般的に巻線部品において、巻線の導体と導体との間隔が近いと、隣接する巻線の間の線間容量が増加し、高周波特性が劣化する。特に平角線を用いた巻線部品では、導線が密着して巻かれるために導体間の距離が近いことと、隣接する巻線の対向面の面積が広いこと、とにより線間容量が大きくなる傾向にある。そのため、平角線を用いた巻線部品では高周波特性の劣化が大くなるという問題があった。
被覆の厚みを厚くすることで、巻線の導体と導体との間隔を広げることも可能だが、被覆の厚さの限界は３０μｍ程度である。また、被覆の厚さは樹脂を複数回塗布することで厚くするので、コストが増加する。さらに、巻線部品の端末部は、他の部品と電気的に接続するために被覆を剥離する必要があるが、被覆が厚くなることで剥離が難しくなるという問題も生じる。
本発明の目的は、線間容量を低減して高周波特性の向上した巻線部品を提供することを目的とする。 Generally, in a winding component, when the distance between the conductors of the windings is close, the line capacity between adjacent windings increases and the high frequency characteristics deteriorate. In particular, in a winding component using a rectangular wire, the conductive wire is tightly wound, so that the distance between the conductors is short, and the area of the facing surface of the adjacent winding is large, resulting in an increase in line capacitance. There is a tendency. For this reason, there is a problem in that the high frequency characteristics are greatly deteriorated in the winding component using the rectangular wire.
Although it is possible to increase the gap between the conductors of the winding by increasing the thickness of the coating, the limit of the thickness of the coating is about 30 μm. Moreover, since the thickness of the coating is increased by applying the resin a plurality of times, the cost increases. Further, the terminal part of the winding part needs to be peeled off in order to be electrically connected to other parts, but there is also a problem that peeling becomes difficult as the covering becomes thick.
An object of the present invention is to provide a winding component having improved high-frequency characteristics by reducing line capacitance.

上記の問題を解決するために、本発明の巻線部品は、
断面が四角形状の導体の表面に絶縁被覆された導線をアルファ巻きまたはエッジワイズ巻きした巻線部品において、
前記導体の巻線が重なる方向の、少なくとも１表面に凸部を設け、
前記導体との間に生じる線間容量を低減した
ことを特徴とする。 In order to solve the above problem, the winding component of the present invention is:
In a winding component in which a conductor with an insulation coating on the surface of a conductor having a square cross section is alpha or edgewise wound,
Protrusions are provided on at least one surface in the direction in which the conductor windings overlap,
The line capacitance generated between the conductor and the conductor is reduced.

本発明の巻線部品によれば、
安価な構造で、絶縁被覆された導線の導体間の距離を部分的に離間させることができる。その結果、線間容量を低減することができ、高周波特性を向上させることが可能となる。 According to the winding component of the present invention,
With an inexpensive structure, the distance between the conductors of the insulated wire can be partially separated. As a result, the line capacitance can be reduced and the high frequency characteristics can be improved.

本発明の一実施例を示す斜視図である。It is a perspective view which shows one Example of this invention. 平角導線の製造方法を説明する図である。It is a figure explaining the manufacturing method of a flat conducting wire. 導体の別の例である。It is another example of a conductor. 従来の巻線部品を説明する図である。It is a figure explaining the conventional winding components.

以下図面を用いて本発明の一実施例の巻線部品を説明する。
図１（ａ）は本発明の一実施例を示す斜視図であり、図１（ｂ）は図１（ａ）の巻線部品に用いる導線を説明する図であり、図１（ｃ）は図１（ａ）の巻線部品の断面図の一部を示す。
図１（ａ）に示すように、コイル部品１０は、巻線として断面が略四角形状の導線１２を絶縁被覆１３で被覆した導線１１を用い、この導線を厚さ方向に巻いた、所謂アルファ巻きしたものである。
図１（ｂ）に示すように、導線１１は、導体１２の巻線の重なる方向の対向する表面に、複数の凸部１４を有し、外周を絶縁被覆１３で被覆されている。
図１（ｃ）に示すように、導線１１が巻線されると、導体１２の巻線と巻線の間の間隔は、凸部１４のある部分の間では２ｄ_１であり、凸部１４のない部分の間では２ｄ_２である。
したがって、導体１２の対向する距離の一部が離される。その結果、線間容量を低減できる。なお、凸部１４の幅ｗを小さくすることにより、離される部分の面積を大きくでき、線間容量を小さくできる。 A winding component according to an embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 (a) is a perspective view showing an embodiment of the present invention, FIG. 1 (b) is a diagram for explaining a conducting wire used for the winding component of FIG. 1 (a), and FIG. A part of sectional drawing of the coil | winding components of Fig.1 (a) is shown.
As shown in FIG. 1 (a), the coil component 10 uses a conducting wire 11 in which a conducting wire 12 having a substantially rectangular cross section as a winding is covered with an insulating coating 13, and this conducting wire is wound in the thickness direction, so-called alpha It is a roll.
As shown in FIG. 1B, the conducting wire 11 has a plurality of convex portions 14 on the opposing surfaces in the direction in which the windings of the conductor 12 overlap, and the outer periphery is covered with an insulating coating 13.
As shown in FIG. 1C, when the conducting wire 11 is wound, the interval between the windings of the conductor 12 is 2d ₁ between the portions where the convex portions 14 are present, and the convex portions 14 between portion without the a 2d _2.
Accordingly, a part of the opposing distance of the conductor 12 is separated. As a result, the line capacity can be reduced. In addition, by reducing the width w of the convex portion 14, the area of the separated portion can be increased, and the line-to-line capacitance can be reduced.

図２は断面が略四角形状の平角導線を製造方法の一部を説明する図である。
断面が円形状の銅線からなる母線を四角形状の孔が設けられた伸線ダイスに複数回通して、断面形状を略四角形状にするととともに、徐々に断面積を小さくし、所定の断面積になるまで引き抜き加工して、断面が略四角形状の平角導線２１を製造する。
そして、図２に示すように、平角導線２１を外周表面に複数の凹部２６を設けた圧延ローラ２５で圧延する。これにより、平角導線の表面に複数の凸部１４が形成された平角導線１２が得られる。
その後、平角導線１２にポリウレタン等の絶縁被覆を複数回塗布し所望の厚さの絶縁被膜を得る。上記した実施例ではアルファ巻のコイル部品であったが、言うまでもなくエッジワイズ巻きであってもよい。 FIG. 2 is a view for explaining a part of a method for producing a rectangular conducting wire having a substantially rectangular cross section.
A cross section of the bus bar made of copper wire having a circular cross section is passed through a wire drawing die provided with a square hole to make the cross section substantially rectangular, and the cross sectional area is gradually reduced to a predetermined cross sectional area. The flat lead wire 21 having a substantially square cross section is manufactured by drawing until it becomes.
And as shown in FIG. 2, the flat conducting wire 21 is rolled with the rolling roller 25 which provided the several recessed part 26 in the outer peripheral surface. Thereby, the flat conducting wire 12 in which the some convex part 14 was formed in the surface of the flat conducting wire is obtained.
Thereafter, an insulating coating such as polyurethane is applied to the flat conducting wire 12 a plurality of times to obtain an insulating coating having a desired thickness. In the embodiment described above, the coil component is an alpha winding, but needless to say, an edgewise winding may be used.

図３は、導体に別の凸部を設けた一実施例を示す斜視図である。
図３（ａ）は、島状の凸部１４ａを設けた導体１２ａを示し、図３（ｂ）は導体の長さ方向とは斜めに凸部１4ｂを設けた導体１２ｂを示し、図３（ｃ）は網状の凸部１４ｃを設けた導体１２ｃを示す。
このような凸部の形状は、圧延ローラの表面の凹凸の形状を変えるだけでよい。また、図３に示すように、凸部を設ける面は、平角線の一方の面だけでもよい。なお、凸部の上にさらに別の凸部を設けてもよい。 FIG. 3 is a perspective view showing an embodiment in which another convex portion is provided on the conductor.
3A shows the conductor 12a provided with the island-shaped convex portions 14a, and FIG. 3B shows the conductor 12b provided with the convex portions 14b obliquely with respect to the length direction of the conductor. c) shows a conductor 12c provided with a net-like convex portion 14c.
The shape of such a convex part only needs to change the shape of the unevenness on the surface of the rolling roller. Moreover, as shown in FIG. 3, the surface which provides a convex part may be only one surface of a flat wire. In addition, you may provide another convex part on a convex part.

以上述べたように、本発明の巻線部品によれば、簡易な方法で巻線部品の線間容量を、小さくすることができる。さらに、凸部により導体の表面積が増え、高周波における表皮効果の低減も期待できる。   As described above, according to the winding component of the present invention, the line capacity of the winding component can be reduced by a simple method. Furthermore, the surface area of the conductor is increased by the convex portion, and a reduction in skin effect at high frequencies can be expected.

巻線部品 １０、５０ａ、５０ｂ
導線 １１、５１
導体 １２、１２ａ、１２ｂ、１２ｃ、５２
絶縁被膜 １３、５３
凸部 １４、１４ａ、１４ｂ、１４ｃ
圧延ローラ ２５
凹部 ２６ Winding parts 10, 50a, 50b
Conductor 11, 51
Conductor 12, 12a, 12b, 12c, 52
Insulating coating 13, 53
Convex part 14, 14a, 14b, 14c
Rolling roller 25
Recess 26

Claims (4)

断面が四角形状の導体の表面に絶縁被覆された導線をアルファ巻きまたはエッジワイズ巻きした巻線部品において、
前記導体の巻線が重なる方向の、少なくとも１表面に凸部を設け、
前記導体との間に生じる線間容量を低減した
ことを特徴とする巻線部品。 In a winding component in which a conductor with an insulation coating on the surface of a conductor having a square cross section is alpha or edgewise wound,
Protrusions are provided on at least one surface in the direction in which the conductor windings overlap,
A winding component characterized in that a line capacitance generated between the conductor and the conductor is reduced. 前記複数の凸部は、前記１表面の裏面にも形成されている
ことを特徴とする請求項１記載の巻線部品。 The winding component according to claim 1, wherein the plurality of convex portions are also formed on the back surface of the one surface. 前記複数の凸部は、網状に形成されている
ことを特徴とする請求項１乃至２記載の巻線部品。 The winding component according to claim 1, wherein the plurality of convex portions are formed in a net shape. 前記複数の凸部は、島状に形成されている
ことを特徴とする請求項１乃至２記載の巻線部品。 The winding component according to claim 1, wherein the plurality of convex portions are formed in an island shape.

Images