JP2018067675A - Coil bobbin and horizontal type transformer device - Google Patents

Coil bobbin and horizontal type transformer device Download PDF

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JP2018067675A
JP2018067675A JP2016206682A JP2016206682A JP2018067675A JP 2018067675 A JP2018067675 A JP 2018067675A JP 2016206682 A JP2016206682 A JP 2016206682A JP 2016206682 A JP2016206682 A JP 2016206682A JP 2018067675 A JP2018067675 A JP 2018067675A
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coil bobbin
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JP6696400B2 (en
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畠山　剛
Takeshi Hatakeyama
剛 畠山
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Abstract

PROBLEM TO BE SOLVED: To improve a situation such that downsizing cannot be promoted by crossover of windings of an approach route and a return route when windings are wound on a winding shaft by round trip space winding.SOLUTION: In an approach route, space winding is adopted with an interval of one or more wire diameters. On the other hand, a return route is configured such that on an upper and a lower face sides of a roller shaft section 22, a winding 50B is sequentially wound in a space between windings 50A of the approach route to be space winding with almost the same interval as the winding 50A of the approach route, and at the same time the winding 50B climbs over the winding 50A of the approach route on both side faces side of the roller shaft section 22 to intersect with the winding 50A of the approach route. On the upper and the lower faces, it is possible to avoid a situation where the windings 50A and 50B are vertically overlapped because the winding 50A of the approach route and the winding 50B of the return route are located at a position in between, resulting in promotion of downsizing.SELECTED DRAWING: Figure 1

Description

本発明は、コイルボビンおよび横型トランス装置に関し、詳しくは、巻線がスペース巻きで巻回された低背構造のコイルボビンおよび横型トランス装置に関するものである。   The present invention relates to a coil bobbin and a horizontal transformer device, and more particularly to a low-profile coil bobbin and a horizontal transformer device in which windings are wound by space winding.

近年、トランスの上下方向に薄い形状、すなわち低背のものが要求されることが多い。例えば、基板等に面実装される小型のトランス装置においては、一般的に横型（横巻型）が採用され、実装面に対して直交する方向の上下方向を薄くした、扁平なコイルボビンを用いることにより低背化を達成している。
さらに、今日では、このような形状のコイルボビンに、巻線を上下方向にどの程度薄く巻回できるかが、低背化促進のポイントとなっている。 In recent years, a thin shape in the vertical direction of the transformer, that is, a low profile is often required. For example, in a small transformer device that is surface-mounted on a substrate or the like, a horizontal type (horizontal winding type) is generally employed, and a flat coil bobbin that is thin in the vertical direction perpendicular to the mounting surface is used. To achieve a low profile.
Furthermore, today, the point of promoting the reduction in height is how thinly the winding can be wound around the coil bobbin having such a shape.

一方、トランスにおいては、巻線枠に対し、往復で一層と数えた場合、その一層分にも満たない少ない巻数の仕様においては、往路は巻線を密に巻回し、復路は直線的に引き戻すようにしたタイプのものが知られている（特許文献１を参照）。
これに対し、上述した少ない巻数の仕様において、巻線枠に対し、往復ともに間隔を空けた疎の状態で巻線を巻回するスペース巻きと称されるタイプの巻線手法も知られている。 On the other hand, in the transformer, when the winding frame is counted as one layer in a reciprocating manner, in the specification with a small number of windings that is less than that, the forward path winds the winding densely and the return path is pulled back linearly. The thing of the type which was made is known (refer patent document 1).
On the other hand, in the above-described specification with a small number of turns, there is also known a type of winding method called a space winding in which a winding is wound in a sparse state with an interval between the winding frame and the back and forth. .

特許第３８２９５７２号公報Japanese Patent No. 3829572

ところで、低背化構造が要求されるトランス装置において、上述したような往復ともにスペース巻きにより巻線を巻回するタイプを採用する場合に、往路と復路の巻線が交差する部分において厚みが２層分となるので、これによって上下方向の厚みが増してしまう。特に、トランスにおいては、１次巻線や２次巻線を巻軸上に各々複数層重ねて巻回することが一般的で、低背化の促進が図れないという問題があった。   By the way, in a transformer device that requires a low-profile structure, when adopting a type in which the winding is wound by space winding for both reciprocation as described above, the thickness is 2 at the portion where the windings of the forward path and the backward path intersect. As a result, the thickness in the vertical direction increases. In particular, in a transformer, it is common to wind a primary winding and a secondary winding with a plurality of layers stacked on a winding shaft, and there has been a problem that a reduction in height cannot be promoted.

本発明は、このような事情に鑑みなされたもので、往復スペース巻きで巻軸上に巻線を巻回する場合において、往路と復路の巻線の交差によって低背化を促進することができない、という状況を改善し得るコイルボビンおよび横型トランス装置を提供することを目的とするものである。   The present invention has been made in view of such circumstances, and in the case where the winding is wound on the winding shaft by reciprocating space winding, the reduction in height cannot be promoted by the intersection of the winding in the forward path and the return path. It is an object of the present invention to provide a coil bobbin and a horizontal transformer device that can improve the situation.

本願発明のコイルボビンは、
一対の鍔部間に、１次巻線と２次巻線の各巻線が巻回層として巻回された、上下方向に薄い断面矩形状の巻軸部を備えた横型トランス装置に用いられるコイルボビンにおいて、
前記巻線により形成される巻回層のうちの少なくとも一方が、前記巻軸部の一端側から他端側に向けて、線径１本以上の間隔を空けたスペース巻きとされ、最終巻回に係る巻線の少なくとも一部が前記鍔部に当接して巻回されるように構成された往路部と、
前記他端側から前記一端側に向けて、前記巻軸部の上下面側で前記巻線が、前記往路部の巻線同士の間のスペースに順次巻回されて、該往路部の巻線とほぼ同一間隔でスペース巻きとされるように、かつ前記巻軸部の両側面側で該往路部の巻線を乗り越えて交差するように構成された復路部からなることを特徴とするものである。
ここで、「横型トランス装置」とは、実装面に対して巻軸部の軸が平行に配されたトランスをいうものとする。 The coil bobbin of the present invention is
A coil bobbin used in a horizontal transformer device having a winding shaft portion having a thin cross-sectional rectangular shape in the vertical direction in which each winding of a primary winding and a secondary winding is wound as a winding layer between a pair of flange portions. In
At least one of the winding layers formed by the winding is a space winding with an interval of one or more wire diameters from one end side to the other end side of the winding shaft portion, and the final winding A forward path portion configured such that at least a part of the winding is wound in contact with the flange portion;
From the other end side toward the one end side, the windings are sequentially wound in the space between the windings of the forward path part on the upper and lower surfaces of the winding shaft part, and the winding of the forward path part And a return path portion configured to cross over the winding of the forward path portion on both side surfaces of the winding shaft portion so as to be wound with a space at substantially the same interval. is there.
Here, the “lateral transformer device” refers to a transformer in which the axis of the winding shaft portion is arranged in parallel to the mounting surface.

また、上述した、１次巻線と２次巻線のうちの少なくとも一方が、複数の巻回層を有し、前記１次巻線と前記２次巻線により形成される全ての巻回層のうち、少なくとも１層が、上述したコイルボビンにおける往路部と復路部の構成を備えていることが好ましい。   Further, at least one of the primary winding and the secondary winding described above has a plurality of winding layers, and all the winding layers formed by the primary winding and the secondary winding. Among these, it is preferable that at least one layer has the configuration of the forward path part and the return path part in the coil bobbin described above.

前記巻軸部に巻回される巻線と、前記巻軸部および前記鍔部の境界線とのなす角度が、前記上下面側よりも前記両側面側の方が大きい値とされていることが好ましい。
また、本願発明の横型トランス装置は、上述したいずれかのコイルボビンと、前記巻軸部内に挿入され、該コイルボビンと組み合された磁性コアとを備えたことを特徴とするものである。 The angle formed between the winding wound around the winding shaft portion and the boundary line between the winding shaft portion and the flange portion has a larger value on the both side surfaces than on the upper and lower surface sides. Is preferred.
A horizontal transformer device according to the present invention includes any one of the above-described coil bobbins and a magnetic core inserted into the winding shaft portion and combined with the coil bobbins.

本発明のコイルボビンおよび横型トランス装置によれば、１つの巻回層について、往路部においては、線径１本以上の間隔を空けたスペース巻きとされ、復路部においては、巻軸部の上下面側で前記巻線が、前記往路部の巻線同士の間のスペースに順次巻回されて、該往路部の巻線とほぼ同一間隔でスペース巻きとされるように、かつ巻軸部の両側面側で該往路部の巻線を乗り越えるようにして交差するように構成されている。   According to the coil bobbin and the horizontal transformer device of the present invention, with respect to one winding layer, a space winding with an interval of one or more wire diameters is provided in the forward path portion, and the upper and lower surfaces of the winding shaft portion in the return path portion. The windings are sequentially wound in the space between the windings of the forward path portion on the side, and are wound in a space at substantially the same interval as the windings of the forward path portion, and on both sides of the winding shaft portion It is configured so as to cross over the winding of the forward path portion on the surface side.

したがって、上下面においては往路部と復路部の巻線が互いの間に位置することで、上下方向に往路部と復路部の巻線が積み重ねられる状況を回避することができ、低背化を促進することができる。これに対し、両側面側で、往路部と復路部の巻線を交差させるようにしているので、この両側面方向には厚みが大きくなるが、この方向の厚みは、低背化を妨げる要因とはならない。   Therefore, since the windings of the forward path part and the return path part are positioned between each other on the upper and lower surfaces, it is possible to avoid the situation in which the windings of the forward path part and the backward path part are stacked in the vertical direction. Can be promoted. On the other hand, since the windings of the forward path portion and the return path portion are crossed on both side surfaces, the thickness increases in the direction of both side surfaces, but the thickness in this direction is a factor that hinders low profile. It will not be.

さらに、上述したように、上下平面では、往路部のスペース巻きの巻線間に復路部の巻線が順次配されて、復路部も往路部と略同一間隔のスペース巻きとされる。これにより、巻線の間隔が等間隔に近くなり、かつ、上下面における当該巻回層と、その下層巻回層および上層巻回層との距離が縮まり、結合力の向上につながる。
近年、結合力の向上が強く求められており、その向上する値が僅か（例えば、1/1000）であっても、要求に応じた電気的特性の向上を図り得る。本発明の横型トランスにおいては、面積の広い上下面において、均等な巻線間隔としているので、向上させ得る電気的特性について、その効果は大なるものがある。 Further, as described above, on the upper and lower planes, the windings of the return path are sequentially arranged between the windings of the space winding of the forward path, and the return path is also formed by a space winding at substantially the same interval as the forward path. Thereby, the space | interval of a coil | winding becomes close to equal intervals, and the distance of the said winding layer in an up-and-down surface, its lower layer winding layer, and an upper layer winding layer shrinks, and it leads to the improvement of a coupling force.
In recent years, there has been a strong demand for improving the bonding force, and even if the value to be improved is small (for example, 1/1000), it is possible to improve the electrical characteristics according to requirements. In the horizontal transformer of the present invention, uniform winding intervals are provided on the upper and lower surfaces having a large area, so that the effect of electrical characteristics that can be improved is significant.

本発明の実施形態に係るコイルボビンを、上面側から見た平面図（Ａ）、および正面側から見た正面図（Ｂ）を示すものである。The top view (A) which looked at the coil bobbin which concerns on embodiment of this invention from the upper surface side, and the front view (B) which looked from the front side are shown. 本発明の実施形態に係るコイルボビンにおいて、巻回軸に巻線を巻回する手法を説明するための図（手順１）であり、（Ａ）は正面図、（Ｂ）は右側面図を示すものである。In the coil bobbin which concerns on embodiment of this invention, it is a figure (procedure 1) for demonstrating the method of winding a coil | winding to a winding shaft, (A) is a front view, (B) shows a right view. Is. 本発明の実施形態に係るコイルボビンにおいて、巻回軸に巻線を巻回する手法を説明するための図（手順２）であり、（Ａ）は正面図、（Ｂ）は右側面図を示すものである。In the coil bobbin which concerns on embodiment of this invention, it is a figure (procedure 2) for demonstrating the method of winding a coil | winding to a winding axis | shaft, (A) is a front view, (B) shows a right view. Is. 本発明の実施形態に係るコイルボビンにおいて、巻回軸に巻線を巻回する手法を説明するための図（手順３）であり、（Ａ）は正面図、（Ｂ）は右側面図を示すものである。In the coil bobbin which concerns on embodiment of this invention, it is a figure (procedure 3) for demonstrating the method of winding a coil | winding to a winding shaft, (A) is a front view, (B) shows a right view. Is. 本発明の実施形態に係るコイルボビンにおいて、巻回軸に巻線を巻回する手法を説明するための図（手順４）であり、（Ａ）は正面図、（Ｂ）は右側面図を示すものである。In the coil bobbin which concerns on embodiment of this invention, it is a figure (procedure 4) for demonstrating the method of winding a coil | winding to a winding shaft, (A) is a front view, (B) shows a right view. Is. 本発明の実施形態に係るコイルボビンにおいて、巻回軸に巻線を巻回する手法を説明するための図（手順５）であり、（Ａ）は正面図、（Ｂ）は右側面図を示すものである。In the coil bobbin which concerns on embodiment of this invention, it is a figure (procedure 5) for demonstrating the method of winding a coil | winding to a winding shaft, (A) is a front view, (B) shows a right view. Is. 本発明の実施形態に係るコイルボビンにおいて、巻回軸に巻線を巻回する手法を説明するための図（手順６）であり、（Ａ）は正面図、（Ｂ）は右側面図を示すものである。In the coil bobbin which concerns on embodiment of this invention, it is a figure (procedure 6) for demonstrating the method of winding a coil | winding to a winding shaft, (A) is a front view, (B) shows a right view. Is. 本発明の実施形態に係るコイルボビンに巻回される巻線が、巻軸の面に応じて巻回角が相違する態様を示す図である。It is a figure which shows the aspect from which the winding wound by the coil bobbin which concerns on embodiment of this invention differs in a winding angle according to the surface of a winding axis.

以下、本発明の実施形態に係るコイルボビンおよび横型トランス装置について図面を参照しつつ説明する。本実施形態のコイルボビンは、例えば、車載用の横型トランス装置に適用される。
図１は、本発明の実施形態に係る横型トランスのコイルボビン２０を、上面側から見た平面図（Ａ）、および正面側から見た正面図（Ｂ）を示すものである。 Hereinafter, a coil bobbin and a horizontal transformer device according to embodiments of the present invention will be described with reference to the drawings. The coil bobbin of this embodiment is applied to, for example, a vehicle-mounted horizontal transformer device.
FIG. 1: shows the top view (A) which looked at the coil bobbin 20 of the horizontal type transformer which concerns on embodiment of this invention from the upper surface side, and the front view (B) which looked from the front side.

本実施形態のコイルボビン２０は、一対の鍔部２１Ａ、Ｂ間に、１次巻線と２次巻線の各巻線５０が巻回層として巻回された、上下方向に薄い断面矩形状の巻軸部２２を備えたものであり、さらに鍔部２１Ａ、Ｂの下方に、複数本の面実装端子４１Ａ、Ｂ（本実施形態においては各々５つずつ設けられている）を有する、鍔部２１Ａ、Ｂと一体に設けられた端子台４０Ａ、Ｂを備えたものである。   The coil bobbin 20 according to the present embodiment has a rectangular section with a thin cross section in the vertical direction, in which each winding 50 of the primary winding and the secondary winding is wound as a winding layer between the pair of flange portions 21A and 21B. A flange portion 21A having a shaft portion 22 and having a plurality of surface-mounting terminals 41A and B (five each in this embodiment, five) under the flange portions 21A and B. , B are provided with terminal blocks 40A, B integrally provided.

上記断面矩形状の巻軸部２２は中空とされており、この中空部に図示されない磁性コアを挿入し、コイルボビンと組み合わせることにより（例えば、１対のＥ型コアの中脚同士を、その先端部が該中空部内で対向するように、かつ１対のＥ型コアの両側脚同士を巻軸部２２の外部で互いに突き合わせることにより）、本実施形態に係る横型トランス装置を形成することができる。   The winding shaft portion 22 having a rectangular cross section is hollow, and a magnetic core (not shown) is inserted into the hollow portion and combined with a coil bobbin (for example, the middle legs of a pair of E-shaped cores are connected to their tips. The lateral transformer device according to the present embodiment can be formed by making the two portions of the pair of E-shaped cores face each other outside the winding shaft portion 22 so that the portions face each other in the hollow portion). it can.

以下、上記コイルボビンの構成についてより詳しく説明する。
コイルボビン２０は、図１に示されるような形状をなし、成形性、量産性、微細加工性、電気絶縁性、低廉性および機械的な強度等を考慮し、例えば、６，６−ナイロン等の絶縁性樹脂を用いて成形される。 Hereinafter, the configuration of the coil bobbin will be described in more detail.
The coil bobbin 20 has a shape as shown in FIG. 1 and takes into consideration moldability, mass productivity, fine workability, electrical insulation, low cost, mechanical strength, and the like. It is molded using an insulating resin.

また、上記コイルを構成する巻線５０は、１次巻線および２次巻線を構成するものであって、銅、アルミニウム等の線材を１層以上の絶縁皮膜によって積層被覆してなり、絶縁皮膜は、例えば、フッ素系樹脂、ナイロン、ポリエチレン、ポリプロピレン等の熱可塑性樹脂や、エチレン-プロピレン-コポリマー等の熱硬化性樹脂、さらには、他の種々の樹脂材料によって形成することができる。   Further, the winding 50 constituting the coil constitutes a primary winding and a secondary winding, and is formed by laminating and covering a wire material such as copper or aluminum with one or more insulating films. The film can be formed of, for example, a thermoplastic resin such as fluororesin, nylon, polyethylene, or polypropylene, a thermosetting resin such as ethylene-propylene-copolymer, and various other resin materials.

ところで、本実施形態のコイルボビン２０においては、上面および下面では、巻線５０が巻軸部２２に往路、復路ともにスペース巻きにより巻回されている。
なお、図１（Ａ）においては、巻軸部２２に１次巻線が巻回されている様子が示されているが、この１次巻線上に、絶縁テープを介して同心円状に巻回される２次巻線（図５を参照）についても同様の態様で巻回される。 By the way, in the coil bobbin 20 of this embodiment, the coil | winding 50 is wound by the space | wound by the winding axis | shaft part 22 by the space winding on the upper surface and the lower surface.
FIG. 1A shows a state where the primary winding is wound around the winding shaft portion 22. The primary winding is wound concentrically on the primary winding via an insulating tape. The secondary winding (see FIG. 5) is wound in the same manner.

すなわち、１つの巻線（巻回層）５０について、往路の巻線５０Ａにおいては、線径１本以上の間隔を空けたスペース巻きとされる。一方、復路の巻線５０Ｂにおいては、巻軸部２２の上下面側で巻線５０Ｂが、往路の巻線５０Ａ同士の間のスペースに順次巻回されて、往路の巻線５０Ａとほぼ同一間隔でスペース巻きとされるように、かつ巻軸部２２の両側面側で往路の巻線５０Ａを乗り越えて交差するように構成されている。
なお、往路の巻線５０Ａの最終巻回は、図１（Ａ）に示す鍔部２１Ｂに沿うように（図１（Ａ）で示された上面とは反対側の下面、および図１（Ｂ）で示された正面とは反対側の背面の各々の一部では鍔部２１Ｂの壁面に当接するようにして）なされ、この後の巻回は復路の巻線５０Ｂによる巻回となる。なお、以後の説明における両側面方向とは、図１（Ｂ）の紙面奥行方向を称するものとする。また、両側面側（両側面対向側）との用語も同様に図１（Ｂ）の紙面奥行側を称するものとする。 That is, one winding (winding layer) 50 is a space winding with an interval of one or more wire diameters in the forward winding 50A. On the other hand, in the return winding 50B, the winding 50B is sequentially wound in the space between the forward windings 50A on the upper and lower surfaces of the winding shaft portion 22, and is approximately the same interval as the forward winding 50A. And the winding shaft portion 22 is crossed over the forward winding 50A on both side surfaces.
The final winding of the forward winding 50A is performed along the flange 21B shown in FIG. 1A (the lower surface opposite to the upper surface shown in FIG. 1A) and FIG. ) And a part of each of the back surfaces opposite to the front surface shown in FIG. 4), and the subsequent winding is performed by the winding 50B on the return path. In the following description, the both side surface directions refer to the depth direction of the paper surface of FIG. Similarly, the terms “both side surfaces” (both side surfaces facing side) also refer to the depth side of FIG. 1B.

このように構成されたことにより、上下面においては図１（Ａ）に示すように、往路の巻線５０Ａと復路の巻線５０Ｂが互いの間に位置することで、上下方向に巻線５０Ａ、Ｂが積み重ねられる状況を回避することができ、低背化を促進することができる。
一方、両側面側では、図１（Ｂ）に示すように、往路の巻線５０Ａと復路の巻線５０Ｂを交差させるようにしているので、その分、両側面対向方向には厚みが大きくなる。しかし、このことによって低背化が阻害される虞はない。 With this configuration, as shown in FIG. 1 (A), the forward winding 50A and the return winding 50B are positioned between each other on the upper and lower surfaces, thereby causing the winding 50A in the vertical direction. , B can be avoided, and a reduction in height can be promoted.
On the other hand, on both sides, as shown in FIG. 1 (B), the forward winding 50A and the return winding 50B are made to intersect with each other. . However, there is no possibility that the low profile is hindered by this.

このように、横型トランス装置において往復スペース巻きを採用すると、往路の巻線５０Ａと復路の巻線５０Ｂが交差することが避けられないが、この交差を全て両側面側で行い、上下面では、往路の巻線５０Ａと復路の巻線５０Ｂの重なりがないように巻回することで低背化が促進されるようにしている。   As described above, when the reciprocating space winding is adopted in the horizontal transformer device, it is inevitable that the forward winding 50A and the backward winding 50B intersect each other. A reduction in height is promoted by winding the winding 50A in the forward path and the winding 50B in the backward path so as not to overlap.

また、上下面においては、図１（Ａ）に示されるように、往路のスペース巻きの巻線間に復路の巻線が順次配されて、復路も往路と同様のスペース巻きとされ、この結果、巻線の間隔が等間隔に近くなり、かつ、上下面における当該巻回層と、その下層巻回層および上層巻回層との距離が縮まり、巻線間の結合力を向上させることが可能となる。これにより、電気的特性を向上させることができる。   Further, on the upper and lower surfaces, as shown in FIG. 1A, the return winding is sequentially arranged between the windings of the outward space winding, and the return winding is also the same space winding as the outgoing path. The spacing between the windings is close to the same spacing, and the distance between the winding layer on the upper and lower surfaces and the lower winding layer and the upper winding layer is reduced, thereby improving the coupling force between the windings. It becomes possible. Thereby, electrical characteristics can be improved.

図２〜図７（（Ａ）は正面図、（Ｂ）は右側面図）は、上述したコイルボビン２０の巻軸部２２に巻線５０を巻回する手法を時系列的に表したものである。なお、この図２（Ａ）、（Ｂ）〜図７（Ａ）、（Ｂ）は巻線の巻回処理の流れを時系列的に説明するものであって、コイルボビン２０の形状は模式的に描かれたものであるから、図１（Ａ）、（Ｂ）のものとは、一致していない。また、巻線の巻回数についても相違している。   2 to 7 ((A) is a front view and (B) is a right side view) are time-series representations of the method of winding the winding 50 around the winding shaft portion 22 of the coil bobbin 20 described above. is there. 2A, 2B to 7A, 7B illustrate the winding process flow in time series, and the shape of the coil bobbin 20 is schematically illustrated. 1 are not consistent with those of FIGS. 1A and 1B. Further, the number of winding turns is also different.

また、この例においては、巻軸部２２上に、まず第１の１次巻線が巻回され、テープを介して2次巻線が巻回され、さらにテープを介して第２の１次巻線が巻回される。なお、
２次巻線の場合は、１次巻線とは巻線巻回の向きが逆となる（１次巻線が鍔部２１Ａ側から巻き始められるのに対し、２次巻線は鍔部２１Ｂ側から巻き始められる）が、その他は１次巻線と同様の巻回態様とされている。 In this example, the first primary winding is first wound on the winding shaft portion 22, the secondary winding is wound via a tape, and the second primary winding is further wound via the tape. Winding is wound. In addition,
In the case of the secondary winding, the winding direction is opposite to that of the primary winding (the primary winding is started from the flange 21A side, whereas the secondary winding is the flange 21B. The other windings have the same winding manner as the primary winding.

まず、第１の１次巻線の巻回は、図２に示すように、図示されない鍔部２１Ａ側の端子に接続された往路の巻線５０Ａが、鍔部２１Ａ側から鍔部２１Ｂ側に向けて巻回される（手順１）。
次に、第１の１次巻線の巻回は、図３に示すように、鍔部２１Ｂの壁面に沿って（一部当接して）巻回されて折り返され、復路の巻線５０Ｂが、鍔部２１Ｂ側から鍔部２１Ａ側に向けて巻回されて図示されない鍔部２１Ａ側の端子に接続される（手順２）。
これにより第１の１次巻線（１層目）の巻回処理が終了する。 First, as shown in FIG. 2, the winding of the first primary winding is such that the forward winding 50A connected to the terminal on the flange 21A side (not shown) moves from the flange 21A side to the flange 21B side. It is wound toward (procedure 1).
Next, as shown in FIG. 3, the winding of the first primary winding is wound along the wall surface of the flange portion 21B (partly abutting) and turned back, so that the return winding 50B is turned on. Then, it is wound from the flange portion 21B side toward the flange portion 21A side and connected to a terminal on the flange portion 21A side (not shown) (procedure 2).
Thereby, the winding process of the first primary winding (first layer) is completed.

次に、図４に示すように、巻回処理が終了した第１の１次巻線の上に巻姿を維持するためのテープ７０Ａが巻回される（手順３）。
続いて、２次巻線の巻回は、図５に示すように、図示されない鍔部２１Ｂ側の端子に接続された往路の巻線５０Ａが、鍔部２１Ｂ側から鍔部２１Ａ側に向けて巻回され、鍔部２１Ａの壁面に沿って（一部当接して）巻回されて折り返され、復路の巻線５０Ｂが、鍔部
２１Ａ側から鍔部２１Ｂ側に向けて巻回されて図示されない鍔部２１Ｂ側の端子に接続される。これにより２次巻線（２層目）の巻回処理が終了する（手順４）。 Next, as shown in FIG. 4, the tape 70 </ b> A for maintaining the winding shape is wound on the first primary winding that has been wound (step 3).
Subsequently, as shown in FIG. 5, the winding of the secondary winding is such that the outward winding 50A connected to the terminal on the flange 21B side (not shown) is directed from the flange 21B side to the flange 21A side. It is wound, wound along the wall surface of the flange portion 21A (partly contacted) and folded back, and the winding 50B of the return path is wound from the flange portion 21A side toward the flange portion 21B side. It is connected to the terminal on the side of the flange 21B that is not performed. Thereby, the winding process of the secondary winding (second layer) is completed (procedure 4).

次に、図６に示すように、巻回処理が終了した第１の１次巻線の上に巻姿を維持するためのテープ７０Ｂが巻回される（手順５）。
続いて、第２の１次巻線の巻回は、図７に示すように、図示されない鍔部２１Ａ側の端子に接続された往路の巻線５０Ａが、鍔部２１Ａ側から鍔部２１Ｂ側に向けて巻回され、鍔部２１Ｂの壁面に沿って（一部当接して）巻回されて折り返され、復路の巻線５０Ｂが、鍔部２１Ｂ側から鍔部２１Ａ側に向けて巻回されて図示されない鍔部２１Ａ側の端子に接続される。これにより第２の２次巻線（３層目）の巻回処理が終了する（手順６）。 Next, as shown in FIG. 6, the tape 70 </ b> B for maintaining the winding shape is wound on the first primary winding that has been wound (step 5).
Subsequently, as shown in FIG. 7, the winding of the second primary winding is such that the forward winding 50 </ b> A connected to the terminal on the flange 21 </ b> A (not shown) is connected from the flange 21 </ b> A side to the flange 21 </ b> B side. Is wound along the wall surface of the flange portion 21B (partly abutting) and folded, and the return winding 50B is wound from the flange portion 21B side toward the flange portion 21A side. Thus, it is connected to a terminal on the side of the flange 21A (not shown). Thereby, the winding process of the second secondary winding (third layer) is completed (procedure 6).

図２〜図７からも明らかなように、上記例においては、第１の１次巻線、２次巻線、および第２の１次巻線の順に、３層に亘り巻軸上に巻回されているが、いずれの層も、往路復路ともにスペース巻きとし、両側面でのみ往路の巻線５０Ａと復路の巻線５０Ｂが交差されるようにしているから、両側面対向方向には厚みが大幅に増加するが、上下方向には厚みの増加が抑えられている。これにより、横型トランスにおける低背化の促進を図ることができる。
なお、上述した例のように、最下層と最上層の双方を１次巻線とすることにより、巻線の結合力を向上させることができる。 As is apparent from FIGS. 2 to 7, in the above example, the first primary winding, the secondary winding, and the second primary winding are wound on the winding shaft in three layers in this order. Although each of the layers is a space winding in both the outward and return paths, the outward winding 50A and the return winding 50B are crossed only on both side surfaces. However, the increase in thickness is suppressed in the vertical direction. As a result, it is possible to promote a reduction in the height of the horizontal transformer.
In addition, as in the example described above, the coupling force of the windings can be improved by using both the lowermost layer and the uppermost layer as primary windings.

ところで、本実施形態においては、上述した両側面側でのみ、往路の巻線５０Ａと復路の巻線５０Ｂが交差するようにしているが、図１（Ａ）、（Ｂ）からも明らかなように、巻軸部２２の両側面側は上下面側と比べて面積が小さく、特に、トランスが小型のものであれば、面積の小さい、巻軸部２２の両側面側で確実に交差処理を行なうことは必ずしも容易ではない。
そこで、このような交差処理の効率化を図るために、図８（Ａ）、（Ｂ）に示すように、巻回角（巻線５０と、巻軸部２２および鍔部２１Ａ、Ｂの境界線２３（との平行線８０）とのなす角度）を上下面と両側面とで変えることが好ましい。なお、図８（Ａ）、（Ｂ）においては、説明の便宜上、巻線５０は巻線の中心線で表されている。 By the way, in the present embodiment, the forward winding 50A and the return winding 50B intersect only on the both side surfaces described above, but as apparent from FIGS. 1 (A) and 1 (B). In addition, the side surface side of the winding shaft portion 22 has a smaller area than the upper and lower surface sides. In particular, if the transformer is small, the cross-section processing is reliably performed on both side surfaces of the winding shaft portion 22 with a small area. It is not always easy to do.
Therefore, in order to increase the efficiency of such crossing processing, as shown in FIGS. 8A and 8B, the winding angle (the boundary between the winding 50 and the winding shaft portion 22 and the flange portions 21A and 21B) is shown. It is preferable to change the angle between the line 23 (and the parallel line 80) between the upper and lower surfaces and both side surfaces. In FIGS. 8A and 8B, for convenience of explanation, the winding 50 is represented by the center line of the winding.

すなわち、図８（Ａ）に示すように、上下面における巻線５０の巻回角αよりも、両側面における巻線５０の巻回角βを大きくとるように巻回することが好ましい。これにより、両側面において、往路の巻線５０Ａと復路の巻線５０Ｂを交差させる操作が容易となり、巻回工程の作業の効率化を図ることができる。   That is, as shown in FIG. 8A, it is preferable to wind the winding so that the winding angle β of the winding 50 on both side surfaces is larger than the winding angle α of the winding 50 on the upper and lower surfaces. This facilitates the operation of crossing the forward winding 50A and the return winding 50B on both side surfaces, thereby improving the efficiency of the winding process.

なお、本発明のコイルボビンおよび横型トランス装置としては、上記実施形態のものに限られるものではなく、その他の種々の態様のものを適用することができる。
例えば、上記実施形態のコイルボビンおよび横型トランス装置は、車載用各種電子機器等に用いるものとされているが、本発明のコイルボビンおよびトランス装置としては、その他の種々の装置に採用可能である。 Note that the coil bobbin and the horizontal transformer device of the present invention are not limited to those of the above-described embodiment, and various other modes can be applied.
For example, the coil bobbin and the horizontal transformer device of the above-described embodiment are used for various in-vehicle electronic devices, but the coil bobbin and the transformer device of the present invention can be used for various other devices.

また、コイルボビンの形状としては上記実施形態のものに限られるものではなく、種々の形状やタイプのものに変更が可能である。また、巻軸部に巻回される巻線の巻回数についても、実施形態で示された数に限られるものではなく、要求される仕様に応じて適宜選択することができる。   In addition, the shape of the coil bobbin is not limited to that of the above-described embodiment, and can be changed to various shapes and types. Further, the number of turns of the winding wound around the winding shaft portion is not limited to the number shown in the embodiment, and can be appropriately selected according to required specifications.

また、上記実施形態においては、１次巻線と２次巻線の何れもが、往復スペース巻きで両側面で往路と復路の巻線の交差が行われるようにしているが、１次巻線と２次巻線の一方のみが往復スペース巻きで両側面で往路と復路の巻線の交差が行われるようなタイプのものとしてもよい。
さらに、用途によっては、１次巻線と２次巻線の少なくとも一方を複数層とすることがある（上記実施形態においては、１次巻線が２層とされている）が、複数層とした１次巻線および／または２次巻線の一部の層を、往復スペース巻きで両側面で往路と復路の巻線の交差が行われるようなタイプのものとしてもよい。 In the above embodiment, both the primary winding and the secondary winding are reciprocating space windings, and the windings of the forward path and the return path are crossed on both sides. Further, only one of the secondary windings may be a reciprocating space winding, and the forward winding and the return winding may be crossed on both sides.
Furthermore, depending on the application, at least one of the primary winding and the secondary winding may have a plurality of layers (in the above-described embodiment, the primary winding has two layers). Some layers of the primary winding and / or the secondary winding may be of a type in which the forward winding and the return winding are crossed on both sides by reciprocating space winding.

また、巻軸部に巻回される巻線の形状としては、丸線、平角線やその他の種々の形状のものとすることができる。
さらに、巻線の線径、および線材や絶縁皮膜の種類としては、種々のものを採用可能である。 Moreover, as a shape of the winding wound around the winding shaft portion, a round wire, a rectangular wire, and other various shapes can be used.
Furthermore, various types of wire diameters and types of wires and insulating films can be employed.

コアについても、前述したように、２つのＥ字状のコアに限られるものではなく、断面略日字形状を構成できるものであれば、他の形状のコア要素を組み合わせたものであってもよい。また、コア要素は２つに限られるものではなく、３つ以上としてもよい。   As described above, the core is not limited to the two E-shaped cores, but may be a combination of core elements having other shapes as long as the cross-section can be formed in a substantially Japanese character shape. Good. Further, the number of core elements is not limited to two, and may be three or more.

２０ コイルボビン
２１Ａ、２１Ｂ 鍔部
２２ 巻軸部
２３ 境界線
４０Ａ、４０Ｂ 端子台
４１Ａ、４１Ｂ 面実装端子
５０ 巻線
５０Ａ 往路の巻線
５０Ｂ 復路の巻線
７０Ａ、７０Ｂ テープ
８０ 平行線 20 Coil bobbins 21A, 21B Saddle part 22 Winding shaft part 23 Boundary line 40A, 40B Terminal block 41A, 41B Surface mount terminal 50 Winding 50A Outward winding 50B Return winding 70A, 70B Tape 80 Parallel line

Claims (4)

一対の鍔部間に、１次巻線と２次巻線の各巻線が巻回層として巻回された、上下方向に薄い断面矩形状の巻軸部を備えた横型トランス装置に用いられるコイルボビンにおいて、
前記巻線により形成される巻回層のうちの少なくとも一方が、前記巻軸部の一端側から他端側に向けて、線径１本以上の間隔を空けたスペース巻きとされ、最終巻回に係る巻線の少なくとも一部が前記鍔部に当接して巻回されるように構成された往路部と、
前記他端側から前記一端側に向けて、前記巻軸部の上下面側で前記巻線が、前記往路部の巻線同士の間のスペースに順次巻回されて、該往路部の巻線とほぼ同一間隔でスペース巻きとされるように、かつ前記巻軸部の両側面側で該往路部の巻線を乗り越えて交差するように構成された復路部からなることを特徴とするコイルボビン。 A coil bobbin used in a horizontal transformer device having a winding shaft portion having a thin cross-sectional rectangular shape in the vertical direction in which each winding of a primary winding and a secondary winding is wound as a winding layer between a pair of flange portions. In
At least one of the winding layers formed by the winding is a space winding with an interval of one or more wire diameters from one end side to the other end side of the winding shaft portion, and the final winding A forward path portion configured such that at least a part of the winding is wound in contact with the flange portion;
From the other end side toward the one end side, the windings are sequentially wound in the space between the windings of the forward path part on the upper and lower surfaces of the winding shaft part, and the winding of the forward path part A coil bobbin comprising a return path portion configured to be wound in a space at substantially the same interval and to cross over the winding of the forward path portion on both side surfaces of the winding shaft portion. 請求項１に記載の、１次巻線と２次巻線のうちの少なくとも一方が、複数の巻回層を有し、前記１次巻線と前記２次巻線により形成される全ての巻回層のうち、少なくとも１層が、請求項１に記載のコイルボビンにおける往路部と復路部の構成を備えていることを特徴とするコイルボビン。   The primary winding and the secondary winding according to claim 1, wherein at least one of the primary winding and the secondary winding has a plurality of winding layers, and all the windings formed by the primary winding and the secondary winding. A coil bobbin characterized in that at least one of the rotating layers has the configuration of the forward path part and the return path part of the coil bobbin according to claim 1. 前記巻軸部に巻回される巻線と、前記巻軸部および前記鍔部の境界線とのなす角度が、前記上下面側よりも前記両側面側の方が大きい値とされていることを特徴とする請求項１または２記載のコイルボビン。   The angle formed between the winding wound around the winding shaft portion and the boundary line between the winding shaft portion and the flange portion has a larger value on the both side surfaces than on the upper and lower surface sides. The coil bobbin according to claim 1 or 2. 請求項１〜３のうちいずれか１項記載のコイルボビンと、前記巻軸部内に挿入され、該コイルボビンと組み合された磁性コアとを備えたことを特徴とする横型トランス装置。
A horizontal transformer device comprising: the coil bobbin according to claim 1; and a magnetic core inserted into the winding shaft portion and combined with the coil bobbin.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63253607A (en) * 1987-04-10 1988-10-20 Kijima:Kk Small-sized winding apparatus having parallel double-wire coil
WO2016041694A1 (en) * 2014-09-15 2016-03-24 Philips Lighting Holding B.V. Inductive electrical component with auxiliary winding
JP2016149464A (en) * 2015-02-12 2016-08-18 株式会社村田製作所 Coil component and method of manufacturing the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63253607A (en) * 1987-04-10 1988-10-20 Kijima:Kk Small-sized winding apparatus having parallel double-wire coil
WO2016041694A1 (en) * 2014-09-15 2016-03-24 Philips Lighting Holding B.V. Inductive electrical component with auxiliary winding
JP2016149464A (en) * 2015-02-12 2016-08-18 株式会社村田製作所 Coil component and method of manufacturing the same

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