JP3177611B2 - Manufacturing method of hollow litz wire - Google Patents
Manufacturing method of hollow litz wireInfo
- Publication number
- JP3177611B2 JP3177611B2 JP33298893A JP33298893A JP3177611B2 JP 3177611 B2 JP3177611 B2 JP 3177611B2 JP 33298893 A JP33298893 A JP 33298893A JP 33298893 A JP33298893 A JP 33298893A JP 3177611 B2 JP3177611 B2 JP 3177611B2
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- JP
- Japan
- Prior art keywords
- twisting
- twist
- strand
- twisted
- pitch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Description
【０００１】[0001]
【産業上の利用分野】本発明はリッツ線の製造方法に関
し、更に詳しくは高周波用途のトランスやチョークの巻
線材、機器内の配線材として好適な中空リッツ線の製造
方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a litz wire, and more particularly to a method for manufacturing a hollow litz wire suitable for use as a winding material for transformers and chokes for high frequency applications and as a wiring material in equipment.
【０００２】[0002]
【従来の技術】従来より高周波領域における交流抵抗を
低減するために、絶縁細線、又は束線を複数本撚合せて
なるリッツ線が使用されている。通常３段階の撚工程か
ら成る複合撚リッツ線の製造方法は、絶縁細線を複数本
撚合せて孫撚線とする第１の工程（孫撚工程）、孫撚線
を複数本撚合せて子撚線とする第２の工程（子撚工
程）、子撚線を複数本撚合せて親撚線とする第３の工程
（親撚工程）から成り立っている。得られた複合撚リッ
ツ線の最終断面形状は真円状で、個々のセグメントの形
状は該リッツ線の軸中心に対し均等に分割された扇形状
が軸中心に均等に分割されていることが望ましい。そこ
で、中心部に１本、その周囲に６本の素線束を配置構成
する同心撚によりリッツ線の真円度を高めている。ま
た、複合撚リッツ線の撚の安定性を考慮し第１の工程
（孫撚工程）、第２の工程（子撚工程）、第３の工程
（親撚工程）の撚方向を交互（第１の工程右→第２の工
程左→第３の工程右、または第１の工程左→第２の工程
右→第３の工程左）に変えて製造するのが一般的であ
る。さらに、従来のリッツ線の製造では撚線を構成する
素線の長さが撚ピッチの約２％となるような撚を行う。
すなわち、約２％の撚込み率で撚合せを行うことから、
撚ピッチは仕上外径の約１０倍になっている。2. Description of the Related Art Conventionally, in order to reduce AC resistance in a high frequency region, a litz wire formed by twisting a plurality of insulated thin wires or bundled wires has been used. The method of manufacturing a composite twisted litz wire, which usually includes three stages of twisting, comprises a first step (twisting a plurality of insulated thin wires into a grandchild strand), and a stranding of a plurality of grandchild strands. It comprises a second step of forming a stranded wire (child twisting step) and a third step of twisting a plurality of child stranded wires into a parent twisted wire (parent twisting step). The final cross-sectional shape of the obtained composite twisted litz wire is a perfect circle, and the shape of each segment is such that a fan shape equally divided with respect to the axis center of the litz wire is equally divided with respect to the axis center. desirable. Therefore, the roundness of the litz wire is increased by concentric twisting in which one wire bundle is arranged at the center portion and six wire bundles are arranged therearound. In addition, in consideration of the stability of the twist of the composite twisted litz wire, the twist direction of the first step (the child twisting step), the second step (the child twisting step), and the third step (the parent twisting step) is alternately changed (the first twisting step). In general, the manufacturing is performed in the order of (first process right → second process left → third process right or first process left → second process right → third process left). Furthermore, in the production of the conventional litz wire, twisting is performed such that the length of the strands constituting the twisted wire is about 2% of the twist pitch.
That is, since twisting is performed at a twist rate of about 2%,
The twist pitch is about 10 times the finished outer diameter.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
リッツ線を高周波で動作するトランスやチョーク等の巻
線材や高周波電流が流れる配線材として用いた場合、周
波数の増加と共に中心導体と回りの導体との近接効果の
影響により交流抵抗は大きくなり、トランスやチョーク
等の損失の増加を招くことになる。従来の７本撚構成の
リッツ線は、中心の素線束が回りの素線束より短いの
で、中心の素線束の抵抗値は回りの素線束の抵抗値に比
べて低周波領域において小さいが、高周波領域において
は近接効果の影響により大きくなる。したがって、従来
のリッツ線を高周波領域で使用する場合には様々な問題
があり、改善すべき点が多い。そこで、高周波での電気
抵抗を減らす目的で、リッツ線の中心部の素線束を無く
した中空リッツ線が提案された。しかし、素線束の撚合
せ本数を単に７本から６本に減らし従来の方法で撚合せ
た場合には、中心部への素線の部分的あるいは全体的な
落ち込みがあったり撚が不安定になるため、リッツ線に
よじれやひきつれが生じトランスやチョーク等の巻線に
供する断面形状が円形な中空リッツ線は得られなかっ
た。However, when the conventional litz wire is used as a winding material such as a transformer or a choke operating at a high frequency or a wiring material through which a high-frequency current flows, as the frequency increases, the center conductor and the surrounding conductors become larger. The effect of the proximity effect causes the AC resistance to increase, resulting in an increase in loss of a transformer, a choke, and the like. In the conventional litz wire having a seven-strand configuration, the center wire bundle is shorter than the surrounding wire bundle. Therefore, the resistance value of the center wire bundle is smaller in the low frequency region than the resistance value of the surrounding wire bundle, In the region, it becomes larger due to the influence of the proximity effect. Therefore, when the conventional litz wire is used in a high frequency region, there are various problems, and there are many points to be improved. Therefore, for the purpose of reducing the electrical resistance at high frequencies, a hollow litz wire has been proposed in which the element bundle at the center of the litz wire is eliminated. However, if the number of twisted strands is simply reduced from seven to six and the strands are twisted by the conventional method, the strands partially or entirely fall into the center or the twist becomes unstable. Therefore, the litz wire was twisted or cracked, and a hollow litz wire having a circular cross section for use in winding of a transformer or a choke could not be obtained.
【０００４】本発明は、上記従来技術が有する各種の問
題点を解決するためになされたものであり、その目的
は、高周波増加による近接効果の影響を抑え、高周波領
域でのトランスやチョークの巻線における損失を低減さ
せると共に、外径を小形化できる中空リッツ線の製造方
法を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned various problems of the prior art, and an object of the present invention is to suppress the influence of a proximity effect due to an increase in high frequency and to reduce the effect of a transformer or choke in a high frequency region. An object of the present invention is to provide a method for manufacturing a hollow litz wire that can reduce the loss in the wire and can reduce the outer diameter.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
めに第１の発明は、複数本の絶縁細線で構成されたリッ
ツ線の製造工程において、複数本の絶縁細線を第１の撚
方向で撚合せる第１の工程（孫撚工程）と、第１の工程
で得られた孫撚線の複数本を、孫撚線のピッチが孫撚工
程時の撚ピッチより多きくなる撚戻しを加えながら第１
の工程の撚方向と同じ第２の撚方向で撚合せる第２の工
程（子撚工程）と、第２の工程で得られた子撚線の複数
本を、前記孫撚線のピッチが孫撚工程時の撚ピッチより
２０〜５０％、子撚線のピッチが子撚工程時の撚ピッチ
より４０〜６０％小さくなる撚込みがあるようピッチを
設定した撚戻し条件により、撚戻しを加えながら第２の
工程の撚方向と反対の第３の撚方向で撚合せる第３の工
程（親撚工程）により、子撚線に扇形の形状を形成させ
ると共に、親撚線の中心部に空隙を形成させる中空リッ
ツ線の製造方法である。According to a first aspect of the present invention, in a manufacturing process of a litz wire composed of a plurality of insulated thin wires, a plurality of insulated thin wires are connected in a first twisting direction. The first step (the grandchild twisting step) of twisting and the untwisting of the plurality of the grandchild strands obtained in the first step, in which the pitch of the grandchild strand is larger than the twist pitch in the grandchild stranding step First while adding
A second step (child twisting step) of twisting in the same second twist direction as the twist direction of the step, and a plurality of the child twisted wires obtained in the second step, wherein the pitch of the grandchild strand is Twisting is applied under the twisting conditions in which the pitch is set so that there is a twist that is 20 to 50% smaller than the twist pitch in the twisting step and the pitch of the strand wire is 40 to 60% smaller than the twist pitch in the stranding step. In the third step (parent twisting step) of twisting in the third twisting direction opposite to the twisting direction of the second step, a fan-shaped shape is formed in the child twisted wire, and a gap is formed in the center of the parent twisted wire. Is a method for producing a hollow litz wire.
【０００６】第２の発明は、複数本の絶縁細線で構成さ
れたリッツ線の製造工程において、第１の工程（孫撚工
程）の撚方向と第２の工程（子撚工程）の撚方向は同一
方向（第１の工程右撚り，第２の工程右撚り、または第
１の工程左撚り，第２の工程左撚り）、第３の工程（親
撚工程）の撚方向は第２の工程の撚方向とは反対方向
（第２の工程右撚り，第３の工程左撚り、または第２の
工程左撚り，第３の工程右撚り）に撚合せる中空リッツ
線の製造方法である。According to a second aspect of the present invention, in a manufacturing process of a litz wire composed of a plurality of insulated thin wires, a twisting direction of a first step (a grandchild twisting step) and a twisting direction of a second step (a child twisting step). Are in the same direction (first step right twist, second step right twist, or first step left twist, second step left twist), and the twist direction in the third step (parent twist step) is the second direction. This is a method for manufacturing a hollow litz wire that is twisted in a direction opposite to the twisting direction of the step (right twist in the second step, left twist in the third step, or left twist in the second step, right twist in the third step).
【０００７】第３の発明は、複数本の絶縁細線で構成さ
れたリッツ線の製造工程において、第１の工程（孫撚工
程）で製造した孫撚線の撚ピッチが孫撚線の仕上外径の
１２〜６０倍、第２の工程（子撚工程）で製造した子撚
線の撚ピッチが子撚線の仕上外径の１３〜５０倍であ
り、第３の工程（親撚工程）で製造した親撚線の撚ピッ
チが親撚線の仕上外径の８〜１２倍になるように撚ピッ
チを設定した中空リッツ線の製造方法である。According to a third aspect of the present invention, in the process of manufacturing a litz wire composed of a plurality of insulated thin wires, the twist pitch of the grandchild strand produced in the first step (grandchild stranding step) is different from the finish of the grandchild strand. 12 to 60 times the diameter, the twist pitch of the strand twisted wire manufactured in the second step (the stranding step) is 13 to 50 times the finished outer diameter of the strand strand, and the third step (the parent twisting step) This is a method for manufacturing a hollow litz wire in which the twist pitch is set such that the twist pitch of the parent twisted wire manufactured in step 1 is 8 to 12 times the finished outer diameter of the parent twisted wire.
【０００８】第４の発明は、複数本の絶縁細線で構成さ
れたリッツ線の製造工程において、第１の工程（孫撚工
程）で孫撚線を製造した後、第２の工程（子撚工程）で
撚合せる前記孫撚線の本数と第３の工程（親撚工程）で
撚合せる子撚線の本数が、それぞれ６本である中空リッ
ツ線の製造方法である。In a fourth aspect of the present invention, in a process for manufacturing a litz wire composed of a plurality of insulated thin wires, after a grandchild strand is manufactured in a first step (grandchild twisting step), a second step (child stranding) is performed. This is a method for manufacturing a hollow litz wire in which the number of the grandchild strands to be twisted in the step (3) and the number of child strands to be twisted in the third step (the parent twisting step) are respectively six.
【０００９】[0009]
【作用】上記構成によれば、本発明は、リッツ線の撚工
程において行われる撚り戻しに注目することにより、各
撚工程のより方向と撚ピッチの最適条件を見出だし中空
リッツ線の製造を可能にした。According to the above construction, the present invention focuses on the untwisting performed in the litz wire twisting step, finds the optimum conditions of the twist direction and twist pitch in each twisting step, and starts manufacturing the hollow litz wire. Made it possible.
【００１０】複合撚中空リッツ線は、複数本の絶縁細
線、又は束線を撚合せる工程を経て製造される。この撚
合せ工程において、撚合せがなされる絶縁細線又は束線
（以下素線と呼ぶ）は、撚方向と同方向の撚の力を受け
る。すなわち、撚を受ける方向にねじれが伝播して行
き、素線にも撚りが加えられる。例えば、右撚を行う場
合には右撚が、左撚を行う場合には左撚が素線に対して
撚が加えられることになる。[0010] The composite twisted hollow litz wire is manufactured through a process of twisting a plurality of insulated thin wires or bundled wires. In this twisting step, the insulated thin wires or bundles (hereinafter referred to as strands) to be twisted receive a twisting force in the same direction as the twisting direction. That is, the twist propagates in the direction in which the twist is received, and the strand is also twisted. For example, when performing right-handed twisting, right-handed twisting is performed, and when performing left-handed twisting, left-handed twist is added to the strand.
【００１１】撚合せ工程中で素線に撚が加わると、撚上
がったリッツ線は、素線の歪みのためにカールしやすく
なる。そこでこれを防止するために、素線の撚戻しが行
われる。一般に複合撚リッツ線における撚戻しは、撚合
せ工程中で行われている。すなわち、素線をリッツ線の
撚方向と逆の方向に撚った後、複数本の素線を撚合せリ
ッツ線とする工程を一工程で行う。特殊な場合を除い
て、素線の撚戻し数（または撚戻しピッチ）とリッツ線
の撚合せ数（又は撚ピッチ）を等しく設定する。撚戻し
数と撚合せ数の比が１対１ということは、リッツ線の撚
合せ後、素線に歪みを残さないためである。When twisting is applied to the strand during the twisting step, the twisted litz wire tends to curl due to distortion of the strand. Then, in order to prevent this, twisting of the strand is performed. Generally, untwisting in a composite twisted litz wire is performed during a twisting process. That is, after the strands are twisted in a direction opposite to the twisting direction of the litz wire, a process of turning a plurality of strands into a twisted litz wire is performed in one step. Except in special cases, the number of twists (or twist pitches) of strands and the number of twists (or twist pitches) of litz wires are set equal. The reason that the ratio of the number of twists to the number of twists is 1 to 1 is that no distortion is left in the strand after the litz wire is twisted.
【００１２】素線の撚戻しは、撚合すリッツ線の撚に対
し逆方向の撚を行うということであり、素線が撚線なら
ば撚戻しによって撚が戻る場合と、逆に撚込まれる場合
がある。撚合せ方向が素線の撚方向と同じであれば素線
は撚戻され、撚合せ方向が素線の撚方向と逆であれば素
線は撚込まれることになる。但しこれは撚戻しが行われ
ている過程での状態である。撚戻し数と撚合せ数とを１
対１で撚った場合、素線の撚数（又は撚ピッチ）は撚戻
しにより変化するが、リッツ線に撚合されることにより
撚戻し前の撚数（撚ピッチ）に戻るため、最終的には素
線の撚数（又は撚ピッチ）は変化しない。[0012] Twisting of the strand is to twist the wire in the opposite direction to the twist of the litz wire to be twisted. May be If the twisting direction is the same as the twisting direction of the strand, the strand is untwisted. If the twisting direction is opposite to the twisting direction of the strand, the strand is twisted. However, this is a state in which twisting is being performed. The number of twists and the number of twists are 1
When twisted one-to-one, the number of twists (or twist pitch) of the strand changes due to untwisting, but it returns to the number of twists (twist pitch) before untwisting by being twisted into the litz wire. Typically, the number of twists (or twist pitch) of the strand does not change.
【００１３】撚ピッチＰ0 （mm）の撚線とは、長さＰ0
に１回の撚がある撚線であり、１０００mmでは、１００
０／Ｐ0 回撚られていることになる。今、撚ピッチＰ0
の左撚線を撚ピッチＰ1 の左撚に変えるには、Ｐ0 ＞Ｐ
1 の場合、１０００mmあたり、１０００×（１／Ｐ1 −
１／Ｐ0 ）回左撚を加えればよい。より具体的にはＰ0
＝１７mmをＰ1 ＝１５mmに変えるには、先ずＰ0 ＝１７
mmは、１０００mmあたり、１０００／１７＝５８．８５
左回転した撚であり、Ｐ1 ＝１５mmは１０００mmあた
り、１０００／１５＝６６．６７左回転した撚である。
従って撚ピッチＰ0 を撚ピッチＰ1 の左撚に変えるには
１０００×（１／Ｐ1 −１／Ｐ0 ）＝６６．６７−５
８．８５＝７．８５回であり、７．８５回左撚を加えれ
ばよいこととなる。A stranded wire having a twist pitch P 0 (mm) is a length P 0
Is a stranded wire that has one twist.
0 / P 0 is twisted. Now, twist pitch P 0
Left to change the twisted a twist to twist the left of the pitch P 1 is of, P 0> P
In the case of 1 , 1000 × (1 / P 1 −
1 / P 0 ) turns may be added. More specifically, P 0
To change P = 17 mm to P 1 = 15 mm, first, P 0 = 17
mm is 1000/17 = 58.85 per 1000 mm
Twisted counterclockwise rotation, P 1 = 15 mm is a counterclockwise twist per 1000 mm per 1000/15 = 66.67.
Thus the change in the twisting left pitch P 1 twisting the twisting pitch P 0 is 1000 × (1 / P 1 -1 / P 0) = 66.67-5
8.85 = 7.85 times, which means that the left-handed twist may be added 7.85 times.
【００１４】またＰ0 ＜Ｐ1 の場合、１０００mmあた
り、１０００×（１／Ｐ0 −１／Ｐ1 ）回右撚を行い撚
戻すことになる。すなわちＰ0 ＝１７mmをＰ1 ＝２０mm
に変えるには、Ｐ1 ＝２０mmは、１０００mmあたり、１
０００／２０＝５０回転した撚であり、またＰ0 ＝１７
mmの１０００mmあたりの回転数は５８．５８回であるか
ら、Ｐ1 ＝２０mmはＰ0 ＝１７mmに対して、１０００×
（１／Ｐ0 −１／Ｐ1 ）＝５０−５８．８５＝−８．８
２回転多く左回転しているから、右に８．８２回右撚を
行い撚戻すことになる。If P 0 <P 1 , right twisting is performed 1000 × (1 / P 0 −1 / P 1 ) times per 1000 mm, and twisting is performed. That is, P 0 = 17 mm and P 1 = 20 mm
To change to, P 1 = 20mm is, per 1000mm, 1
000/20 = twisted 50 turns, and P 0 = 17
Because mm Rotation per 1000mm of a 58.58 times, P 1 = 20 mm for the P 0 = 17mm, 1000 ×
(1 / P 0 −1 / P 1 ) = 50−58.85 = −8.8
Since it has been rotated counterclockwise two more turns, it will be right-twisted to the right 8.82 times and twisted back.
【００１５】さらに左撚線を右撚線に変えるには、先ず
右撚に撚って左撚を無くし、更に右へ撚込むことにな
る。Further, in order to change the left twisted wire to the right twisted wire, first, the right twist is performed, the left twist is eliminated, and the twist is further twisted to the right.
【００１６】撚ピッチＰ0 の左撚線複数本を、撚戻し数
と撚合せ数を１対１で撚ピッチＰ1 の左撚リッツ線に撚
合せた場合、撚戻しを受けた時のピッチと、撚合せ後の
撚ピッチは以下の通りである。The twist left stranded wire a plurality of pitch P 0, twist back number and twisted so when combined twisting to left twisting litz wire pitch P 1 twisting the number of one-to-one twisting pitch when subjected to back And the twist pitch after twisting are as follows.
【００１７】撚ピッチＰ0 の左撚線は、撚戻しにより１
／Ｐ1 回の右撚を受けるのでピッチは（１／Ｐ0 −１／
Ｐ1 ）-1に変化する。そして撚合せにより１／Ｐ1 回左
撚を受けるので、撚合せ後の撚ピッチは（１／Ｐ0 ＋１
／Ｐ1 −１／Ｐ1 ）-1＝Ｐ0 となり、左撚線の撚ピッチ
Ｐ0 は変化しない。The left twisted wire having a twist pitch P 0 is 1
/ P After receiving one turn, the pitch is (1 / P 0 −1 /
P 1 ) changes to -1 . Then, since the left-handed twist is received 1 / P 1 times by twisting, the twist pitch after twisting is (1 / P 0 +1).
/ P 1 −1 / P 1 ) −1 = P 0 , and the twist pitch P 0 of the left stranded wire does not change.
【００１８】また、撚ピッチＰ0 の左撚線複数本を、撚
戻し数と撚合せ数を１対１で撚ピッチＰ1 の右撚リッツ
線に撚合せた場合、撚戻しを受けた時のピッチと、撚合
せ後の撚ピッチは以下の通りである。When a plurality of left twisted wires having a twist pitch P 0 are twisted into a right twisted litz wire having a twist pitch P 1 with the number of untwists and the number of twists being one to one, And the twist pitch after twisting are as follows.
【００１９】撚ピッチＰ0 の左撚線は、撚戻しにより１
／Ｐ1 回の左撚を受け撚込まれるのでピッチは（１／Ｐ
0 ＋１／Ｐ1 ）-1に変化する。そして撚合せにより１／
Ｐ1 回右撚を受け撚込まれるので、撚ピッチは（１／Ｐ
0 ＋１／Ｐ1 −１／Ｐ1 ）-1＝Ｐ0 となり、この場合も
左撚線の撚ピッチＰ0 は変化しない。The left twisted wire having a twist pitch P 0 is 1
/ P 1 times of the receiving twisting pitch because the written to the left twist is (1 / P
0 + 1 / P 1) changes to -1. And by twisting 1 /
Since the written response to twist the P 1 times right twist, the twisting pitch (1 / P
0 + 1 / P 1 -1 / P 1) -1 = P 0 , and the pitch P 0 twisted in this case also the left stranded wire does not change.
【００２０】さて、複合撚リッツ線で、そのリッツ線の
中心部に空隙を形成させるためには、各撚工程における
撚方向、撚ピッチ及び撚戻しを考慮した撚条件の設定が
重要である。In the composite twisted litz wire, in order to form a gap in the center of the litz wire, it is important to set twisting conditions in consideration of the twist direction, twist pitch, and untwist in each twisting step.
【００２１】本発明の中空リッツ線を製造するための撚
条件は、複数本の素線を撚合せてなる第１の工程（孫撚
工程）と第２の工程（子撚工程）の撚方向を同一方向
（第１の工程右撚り，第２の工程右撚り、または第１の
工程左撚り，第２の工程左撚り）にする。そして第２の
工程と第３の工程（親撚工程）の撚方向を反対方向（第
２の工程右撚り，第３の工程左撚り、または第２の工程
左撚り，第３の工程右撚り）に撚合にすることにある。
これは、第２の工程で、第１の工程と同一方向に撚合せ
ると、孫撚線と子撚線の構成を撚戻しによりある程度崩
れやすくしておき、第３の工程の親撚で、反対方向に撚
合せることにより、子撚線が扇形の形状を形成しやすく
なるためである。The twisting conditions for producing the hollow litz wire of the present invention are as follows: the twisting direction of the first step (child twisting step) and the second step (child twisting step) of twisting a plurality of strands. In the same direction (right twist in the first step, right twist in the second step, or left twist in the first step, left twist in the second step). Then, the twist directions of the second step and the third step (parent twisting step) are opposite to each other (right twist in the second step, left twist in the third step, left twist in the second step, right twist in the third step). ).
This is because, in the second step, when twisting in the same direction as in the first step, the configuration of the grandchild strand and the child strand is made to be easily broken to some extent by untwisting. This is because twisting in the opposite direction makes it easier for the strand wire to form a fan-shaped shape.
【００２２】この複合撚中空リッツ線の中心の空隙を、
高い真円度に保つためには、各撚工程において必要以上
のねじれを防ぐために、最適な撚戻しを行う必要があ
る。The gap at the center of the composite twisted hollow litz wire is
In order to maintain high roundness, it is necessary to perform optimal untwisting in each twisting step to prevent unnecessarily twisting.
【００２３】そこで本発明は、第１の工程（孫撚工程）
で製造した孫撚線を撚戻しを加えながら撚合せる第２の
工程（子撚工程）及び第２の工程で製造した子撚線を撚
戻しを加えながら撚合せる第３の工程（親撚工程）の撚
戻しの条件として、第２工程で孫撚線のピッチが、孫撚
工程のピッチより大きくなる撚戻しを加え、第３の親撚
工程で孫撚線のピッチが孫撚工程のピッチより２０〜５
０％、子撚線のピッチが子撚工程時の撚ピッチより４０
〜６０％小さくなる撚戻しがあるように撚ピッチを設定
することにより、また、第１の工程（孫撚工程）で製造
した孫撚線の撚ピッチが孫撚線の仕上外径の１２〜６０
倍、第２の工程（子撚工程）で製造した子撚線の撚ピッ
チが子撚線の仕上外径の１３〜５０倍であり、第３の工
程（親撚工程）で製造した親撚線の撚ピッチが親撚線の
仕上外径の８〜１２倍になるように撚ピッチを設定する
ことにより、撚上がった複合撚リッツ線は、中心部の空
隙の真円度が高い中空リッツ線を得ることができる。Therefore, the present invention relates to a first step (child twisting step).
The second step (child twisting step) of twisting the grandchild strand manufactured in the above (twisting step) and the third step of twisting the child twisted wire manufactured in the second step while twisting (parent twisting step) The conditions for the untwisting are as follows: in the second step, the pitch of the grandchild strand is larger than the pitch of the grandchild stranding step, and in the third parent twisting step, the pitch of the grandchild strand is the pitch of the grandchild stranding step. More than 20-5
0%, the pitch of the stranding wire is 40 times the twisting pitch in the stranding process
By setting the twist pitch so that there is a twist unwinding of about 60%, the twist pitch of the grandchild strand produced in the first step (grandchild stranding step) is 12 to the finishing outer diameter of the grandchild strand. 60
Double, the twist pitch of the child strand produced in the second step (child stranding step) is 13 to 50 times the finished outer diameter of the child strand, and the parent strand produced in the third step (parent stranding step) By setting the twist pitch so that the twist pitch of the wire is 8 to 12 times the finished outer diameter of the parent twisted wire, the twisted composite twisted litz wire has a hollow round litz with a high roundness of the center void. You can get a line.
【００２４】一方、上記撚ピッチの設定範囲を外した場
合には、中心部へ素線が落ち込み、中空状態を形成でき
なくなりまた撚状態が不均一となり部分的に線の弛みや
浮きが発生するため、撚構成の安定した真円度の良好な
複合撚リッツ線は得られない。On the other hand, if the twist pitch is out of the set range, the wire drops into the center, making it impossible to form a hollow state, and the twist state becomes non-uniform, and the wire is partially loosened or floated. Therefore, a composite twisted litz wire having a stable twist configuration and a good roundness cannot be obtained.
【００２５】[0025]
【実施例】以下本発明の好適実施例を添付図面に基づい
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
【００２６】図１は本発明の中空リッツ線の製造方法の
概要を示す略図であり、図１（ａ）は、左撚している状
態を示す第１の工程（孫撚工程）の略図、図１（ｂ）は
左撚している状態を示す第２の工程（子撚工程）の略
図、図１（ｃ）は右撚している状態を示す第３の工程
（親撚工程）の略図である。FIG. 1 is a schematic view showing an outline of a method for manufacturing a hollow litz wire of the present invention, and FIG. 1 (a) is a schematic view of a first step (a grandchild twisting step) showing a left-twisted state. FIG. 1B is a schematic view of a second step (child twisting step) showing a left-twisted state, and FIG. 1C is a schematic view of a third step (parent twisting step) showing a right-twisted state. It is a schematic diagram.
【００２７】図２（ａ）は、本発明の製造に用いる絶縁
細線の詳細断面図を示し、図２（ｂ）は本発明の製造方
法で得られた中空リッツ線の一例を示す断面図を示した
もので、また図３は、本発明の実施例４の中空リッツ線
Ａと比較例１の中空リッツ線Ｂの交流抵抗の測定結果を
示すグラフである。FIG. 2A is a detailed sectional view of an insulated thin wire used in the production of the present invention, and FIG. 2B is a sectional view showing an example of a hollow litz wire obtained by the production method of the present invention. FIG. 3 is a graph showing the measurement results of the AC resistance of the hollow litz wire A of Example 4 of the present invention and the hollow litz wire B of Comparative Example 1.
【００２８】先ず図２（ａ）に示すように、絶縁細線３
は、導体１の外周に絶縁被膜２を設けたものからなり、
図２（ｂ）に示すように中空リッツ線６は、絶縁細線３
を撚合せて孫撚線４とし、この孫撚線４を撚合せて子撚
線５とし、この子撚線５を円周方向に整列するように撚
合せて親撚線（リッツ線６）としたもので、中心に円形
の空隙ｋが形成される。First, as shown in FIG.
Consists of a conductor 1 provided with an insulating coating 2 on the outer periphery thereof,
As shown in FIG. 2B, the hollow litz wire 6 is
Are twisted into a grandchild wire 4, the grandchild wire 4 is twisted into a child strand 5, and the child strands 5 are twisted so as to be aligned in the circumferential direction, and a parent strand (Litz wire 6) Thus, a circular gap k is formed at the center.
【００２９】さて図１（ａ）の第１工程（孫撚工程）に
おいて、１０は絶縁細線３が巻かれた巻枠、１１ａは孫
撚線４を巻き取る巻枠であり、巻枠１０は図では３個示
した、例えば２８個設けられ、２８本の絶縁細線３を繰
り出されて撚合されるようになっている。孫撚線４を巻
き取る巻枠１１ａは、絶縁細線３の撚合せ中に、Ｚａ0
方向に回転され、撚合わされた孫撚線４はＺａ1 方向に
撚りがかけられながら巻枠１１ａに巻き取られる。In the first step (grandchild twisting step) of FIG. 1A, reference numeral 10 denotes a bobbin on which the insulating fine wire 3 is wound, 11a denotes a bobbin for winding the grandchildren 4, and the bobbin 10 In the figure, three wires, for example, 28 wires are provided, and 28 insulated thin wires 3 are drawn out and twisted. The winding frame 11a for winding the grand strand wire 4 is Za0 during twisting of the insulating thin wire 3.
Is twisted in the Z1 direction and wound around the bobbin 11a while being twisted in the Za1 direction.
【００３０】図１（ｂ）の第２工程（子撚工程）におい
て、孫撚線４を貯溜した巻枠１１ｂからの孫撚線４（図
では３本示しているが例えば６本）を繰り出し、図示し
ていないが固定されたダイスでまとめてから撚合せて子
撚線５とし巻枠１２ｂに巻き取る。この際、巻枠１２ｂ
は、第１の工程の巻枠１１ａの回転方向Ｚａ0 と同じＺ
ｂ0 方向に回転され、また孫撚線４を繰り出す巻枠１１
ｂはＺｂ1 方向に回転され、孫撚線４はＺｂ4 方向に、
同じく子撚線５もＺｂ5 方向に撚り戻されながら巻枠１
２ｂに巻き取られる。In the second step (child twisting step) of FIG. 1B, the grandchild strands 4 (three in the figure are shown, for example, six) are fed from the bobbin 11b in which the grandchild strands 4 are stored. Although not shown, they are put together with a fixed die and then twisted into a twisted strand 5 to be wound around a winding frame 12b. At this time, the winding frame 12b
Is the same Z as the rotation direction Za0 of the bobbin 11a in the first step.
The bobbin 11 which is rotated in the direction of b0 and also feeds the grandchild strand 4
b is rotated in the Zb1 direction, the grandchild strand 4 is rotated in the Zb4 direction,
Similarly, the strand 5 is twisted back in the Zb5 direction while the
2b.
【００３１】図１（ｃ）の第３工程（親撚工程）におい
て、子撚線５を貯溜した巻枠１２ｃからの子撚線５（図
では３本示しているが例えば６本）を繰り出し固定され
たダイスでまとめてから撚合せて親撚線６とし巻枠１３
ｃに巻き取る。この際、巻枠１３ｃは、第１の工程の巻
枠１１ａの回転方向ＺＡ0 、第２の工程の巻枠１１ｂの
回転方向Ｚｂ0 と逆のｒ0 方向に回転され、また子撚線
５を繰り出す巻枠１２ｃは、巻枠１３ｃの回転方向ｒ0
と同じｒ1 方向に回転され、子撚線５はｒ5 方向に、同
じく親撚線５もｒ5 方向に撚られながら巻枠１３ｃに巻
き取られる。In the third step (parent twisting step) of FIG. 1C, the child twisted wires 5 (three in the figure are shown, for example, six) are fed from the winding frame 12c storing the child twisted wires 5. After being bundled with a fixed die, they are twisted to form a stranded parent wire 6 and a bobbin 13
Wind up to c. At this time, the winding frame 13c is rotated in the direction r0 opposite to the rotation direction ZA0 of the winding frame 11a in the first step and the rotation direction Zb0 of the winding frame 11b in the second step. The frame 12c has a rotation direction r0 of the winding frame 13c.
The secondary strand 5 is wound in the r5 direction, and the parent strand 5 is wound in the r5 direction while being twisted in the r5 direction.
【００３２】以上において、図１（ａ）の巻枠１１ａの
Ｚａ0 方向の回転数とｒa の巻取速度で、第１工程の撚
ピッチ（左撚）が設定され、図１（ｂ）の巻枠１２ｂの
Ｚｂ0 方向の回転とｒｂの巻取速度とダイスで、子撚線
５の第２の工程の撚ピッチ（左撚）が設定されると共
に、巻枠１１ｂのＺｂ1 方向の回転で孫撚線４の撚戻し
時のピッチが設定され、さらに、巻枠１３ｃのｒ0 方向
の回転とダイスで、第３工程の撚ピッチ（右撚）が設定
されると共に、巻枠１２ｃのｒ1 方向の回転数とｒc 巻
取速度で、孫撚線４と子撚線５が撚戻しされた時のピッ
チが設定される。これら巻枠１１ａ，１１ｂ，１２ｃ，
１３ｃの回転数とｒa ，ｒb ，ｒc の巻取速度は、第２
の工程で孫撚線４が、第１の工程のピッチより２０〜５
０％撚戻されるように、また第３の工程で子撚線５が第
２の工程のピッチより４０〜６０％撚込みされるよう設
定することで良好な中空リッツ線６が製造できることに
なる。In the above, the twist pitch (left twist) in the first step is set by the rotation speed of the winding frame 11a in the Za0 direction and the winding speed of ra in FIG. The twist pitch (left-hand twist) of the second step of the child strand 5 is set by the rotation of the frame 12b in the Zb0 direction, the winding speed of rb, and the die, and the rotation of the winding frame 11b in the Zb1 direction is performed by the sub-twist. The pitch at the time of untwisting of the wire 4 is set, and the twist pitch (right-handed twist) of the third step is set by the rotation of the bobbin 13c in the r0 direction and the dice, and the rotatable rotation of the bobbin 12c in the r1 direction. The pitch at which the grandchild strand 4 and the child strand 5 are unwound is set by the number and the rc winding speed. These winding frames 11a, 11b, 12c,
13c and the winding speed of ra, rb, rc
In the step, the grandchild strand 4 is shifted by 20 to 5 from the pitch in the first step.
Good hollow litz wire 6 can be manufactured by setting it so that it is twisted back by 0% and the strand wire 5 is twisted 40 to 60% in the third step from the pitch of the second step. .
【００３３】次に表１に示した実施例１〜５と参考例１
〜６と比較例１，２を説明する。Next, Examples 1 to 5 and Reference Example 1 shown in Table 1 were used.
6 and Comparative Examples 1 and 2 will be described.
【００３４】[0034]
【表１】 [Table 1]
【００３５】[0035]
【表２】 [Table 2]
【００３６】この表１における第１〜第３工程の撚ピッ
チの設定は表２の通りである。The setting of the twist pitch in the first to third steps in Table 1 is as shown in Table 2.
【００３７】実施例１ 0.10mmφの銅導体１の外周に２種のポリウレタン被膜２
を設けた絶縁細線（2UEW 0.1mm ）３（図２（ａ））を
２８本用い、第１の工程の撚ピッチを１０mmとして、巻
枠１１ａをＺａ0 方向に４５０ rpmの回転で孫撚線４の
撚ピッチが１０mmとなるように回転数を100 回／ｍとし
て撚合せて孫撚線４として巻枠１１ａに巻取速度４．５
ｍ／min で巻き取った。この孫撚線４の外径は０．７mm
であった。Example 1 Two types of polyurethane coatings 2 were formed on the outer periphery of a copper conductor 1 of 0.10 mmφ.
Using 28 insulated wires (2 UEW 0.1 mm) 3 (FIG. 2 (a)) provided with a twisting pitch of 10 mm in the first step, the winding frame 11a is rotated at 450 rpm in the Za0 direction, and the sub-strand wire 4 is used. At a rotation speed of 100 turns / m so that the twisting pitch of the wire becomes 10 mm, and a winding speed of 4.5 is wound on the bobbin 11a as the grandchild wire 4.
It was wound at m / min. The outer diameter of this grandchild strand 4 is 0.7 mm
Met.
【００３８】次に第１の工程で得られ、巻枠１１ｂに貯
溜された孫撚線４の６本を第２の工程で、巻枠１１ｂか
ら繰り出し、縦型撚線機を用い、子撚線５の巻枠１２ｂ
をＺｂ0 方向に回転速度４５０ rpmの回転で、子撚線５
の撚ピッチが２７mmとなるように回転数を３７回／ｍと
して撚合せ、子撚線５として巻枠１２ｂに巻取速度１
２．２ｍ／min で巻き取った。この際、孫撚線４が貯溜
された巻枠１１ｂがＺｂ1 方向に回転させて撚戻しを行
った。この撚戻しは、孫撚線４の撚戻し時の撚ピッチが
１５．８mmとなるように巻枠１１ｂを回転させた。Next, in the second step, six grandchild strands 4 obtained in the first step and stored in the winding form 11b are unwound from the winding form 11b, and are twisted using a vertical twisting machine. Reel 12b of wire 5
At a rotation speed of 450 rpm in the Zb0 direction,
At a rotation speed of 37 times / m so that the twist pitch becomes 27 mm.
The film was wound at 2.2 m / min. At this time, the winding frame 11b in which the grandchild strand 4 was stored was rotated in the Zb1 direction to perform the untwisting. In this untwisting, the bobbin 11b was rotated so that the twist pitch at the time of untwisting the grandchild strand 4 was 15.8 mm.
【００３９】この第２の工程で得られた子撚線５の仕上
げ外径は、１．７mmであった。The finished outer diameter of the strand wire 5 obtained in the second step was 1.7 mm.
【００４０】第２の工程で得られた巻枠１２ｃに貯溜さ
れた子撚線５の６本を、それぞれ巻枠１２ｃから繰り出
し、縦型撚線機を用い、巻枠１３ｃをｒ0 方向に回転速
度４５０ rpmで回転させ、親撚線６の撚ピッチが４０mm
となるように回転数を２５回／ｍとして撚合せて親撚線
（中空リッツ線）６とし、巻枠１３ｃに巻取速度１８ｍ
／min で巻き取った。この際、子撚線５を貯溜した巻枠
１２ｃをｒ1 方向に回転させて撚戻しを行った。なお撚
戻し時の孫撚線４のピッチは０．８mm、子撚線５のピッ
チは１６．１mmとなるようにした。Six of the strands 5 stored in the reel 12c obtained in the second step are fed out from the reel 12c, and the reel 13c is rotated in the r0 direction using a vertical stranding machine. Rotate at a speed of 450 rpm, the twist pitch of the parent twisted wire 6 is 40 mm
Twisted at a rotation speed of 25 times / m so as to obtain a parent stranded wire (hollow litz wire) 6 and a winding speed of 18 m on a winding frame 13c.
/ Min. At this time, the winding frame 12c storing the strands 5 was rotated in the r1 direction to perform the untwisting. At the time of untwisting, the pitch of the grandchild strand 4 was set to 0.8 mm, and the pitch of the child strand 5 was set to 16.1 mm.
【００４１】実施例２〜５は表１，表２に従い、第１〜
３の各工程において、撚ピッチ及び撚戻しピッチ、回転
数及び巻取速度を変え、その他は実施例１と同様にして
中空リッツ線を製造した。In Examples 2 to 5, according to Tables 1 and 2,
In each step of 3, the hollow litz wire was manufactured in the same manner as in Example 1 except that the twist pitch and the untwist pitch, the number of rotations and the winding speed were changed.
【００４２】参考例１〜６，比較例１，２ 参考例１〜６及び比較例１，２については表１，表２に
従い、上記第１〜３工程において撚方向、撚ピッチ、回
転数及び巻取速度を変え、その他は実施例１と同様にし
て複合撚リッツ線を製造した。参考例１〜４は、第１，
２の工程の撚方向が同一方向であり、第３の工程が第２
の方向と反対方向である。また参考例５は第２の工程の
撚方向が第１の撚方向と反対方向であり、第２，３の工
程の撚方向は同一方向である。参考例６は第１〜３の各
工程において撚方向が全て同じものである。Reference Examples 1 to 6, Comparative Examples 1 and 2 Reference Examples 1 to 6 and Comparative Examples 1 and 2 were conducted according to Tables 1 and 2 in the first to third steps in the twist direction, twist pitch, rotation speed, A composite twisted litz wire was manufactured in the same manner as in Example 1 except that the winding speed was changed. Reference Examples 1 to 4
The twisting direction of the second step is the same direction, and the third step is the second direction.
In the opposite direction. In Reference Example 5, the twist direction in the second step is opposite to the first twist direction, and the twist directions in the second and third steps are the same. In Reference Example 6, the twist directions are all the same in each of the first to third steps.
【００４３】また比較例１，２は第１〜３の各工程にお
いて撚方向を順次変えて撚合せているものである。In Comparative Examples 1 and 2, twisting is performed by sequentially changing the twist direction in each of the first to third steps.
【００４４】特性試験 表１は実施例１〜５，参考例１〜６及び比較例１，２で
得られた複合撚リッツ線について中空状態と外観を観察
した結果を示している。Characteristics Test Table 1 shows the results of observing the hollow state and appearance of the composite twisted litz wires obtained in Examples 1 to 5, Reference Examples 1 to 6 and Comparative Examples 1 and 2.
【００４５】複合撚リッツ線の中空状態は、それぞれの
リッツ線の試料を樹脂に埋め込み、固めた後、切断し、
その切断面を研磨し、断面を顕微鏡にて観察して判定し
た。判定基準としては子撚線が複合撚リッツ線の中心部
分に空隙ができているものを良とした。一方親撚線の構
成崩れ、複合撚リッツ線の中心部分を埋めてしまい、複
合撚リッツ線の中心に空隙のないものを悪いとした。ま
た複合撚リッツ線の外観については、撚の状態が均一で
あるものを良とし、撚の状態が不均一であり、部分的に
線の弛みや浮きが見られるものを悪いとした。The hollow state of the composite twisted litz wire is obtained by embedding a sample of each litz wire in a resin, hardening the resin, and cutting the resin.
The cut surface was polished, and the cross section was observed under a microscope to make a judgment. As a criterion, one in which a void was formed in the center portion of the composite twisted litz wire was regarded as good. On the other hand, the structure of the parent twisted wire was broken and the center portion of the compound twisted litz wire was filled, and the wire having no void at the center of the compound twisted litz wire was evaluated as bad. Regarding the appearance of the composite twisted litz wire, a wire having a uniform twisted state was rated good, and a wire having a non-uniform twisted state, in which the wire was partially loosened or lifted, was rated poor.
【００４６】表１から判るように本発明の実施例１〜５
は中空状態、外観が共に良好であったが、参考例１〜６
及び比較例１，２は、中空状態、外観のどちらか一方又
は両方とも悪いことが判る。As can be seen from Table 1, Examples 1 to 5 of the present invention
Was good in both the hollow state and the appearance, but Reference Examples 1 to 6
Also, it can be seen that in Comparative Examples 1 and 2, either one or both of the hollow state and the appearance are bad.
【００４７】表１に示した仕上径と第１〜３の撚ピッチ
は、第１の工程（孫撚工程）で製造した孫撚線の撚ピッ
チが孫撚線の仕上外径の１２〜６０倍、第２の工程（子
撚工程）で製造した子撚線の撚ピッチが子撚線の仕上外
径の１３〜５０倍になるよう、第３の工程（親撚工程）
で製造した親撚線の撚ピッチが親撚線の仕上外径の８〜
１２倍になるように撚ピッチを設定する。The finishing diameter and the first to third twist pitches shown in Table 1 are obtained by setting the twist pitch of the grandchild strand produced in the first step (grandchild stranding step) to 12 to 60 times the finishing outer diameter of the grandchild strand. The third step (parent twisting step) such that the twist pitch of the strand twisted wire produced in the second step (child twisting step) is 13 to 50 times the finished outer diameter of the strand twisted wire.
The twist pitch of the parent stranded wire manufactured in the above is 8 to the finish outer diameter of the parent stranded wire.
The twist pitch is set to be 12 times.
【００４８】また表１より第２の工程での孫撚線の撚戻
し時のピッチが大きく、かつ第３の工程での孫撚線の撚
込みで孫撚線のピッチが、第１工程の撚ピッチより２０
〜５０％の範囲が良く、かつ第３の工程での子撚線のピ
ッチが子撚工程の撚ピッチより４０〜６０％の範囲が良
い。すなわち、参考例３は、第２の工程での孫撚線の撚
戻し時のピッチが小さく不適であり、参考例６，比較例
１，２は、第３の工程での孫撚線の撚込みで孫撚線のピ
ッチが、第１工程の撚ピッチより２０〜５０％の範囲に
入らず不適であり、また参考例１，２は、第３の工程で
の子撚線のピッチが子撚工程の撚ピッチより４０〜６０
％の範囲に入らず不適でありいずれも中空状態が悪くな
る。また参考例５，６は、第３の工程での子撚線のピッ
チが子撚工程の撚ピッチより６％と小さく外観形状も悪
くなる。Further, from Table 1, the pitch at the time of untwisting of the descendant strand in the second step is large, and the pitch of the descendant strand is increased by the twisting of the descendant strand in the third step. Twist pitch 20
It is preferable that the pitch of the twisted wire in the third step is 40 to 60% of the twist pitch of the twisting step. That is, in Reference Example 3, the pitch at the time of untwisting the descendant strand in the second step is small and unsuitable, and in Reference Example 6, Comparative Examples 1 and 2, the strand of the descendant strand is twisted in the third step. As a result, the pitch of the grandchild strand is not suitable because it does not fall within the range of 20 to 50% of the twist pitch in the first step, and in Reference Examples 1 and 2, the pitch of the child strand in the third step is smaller. 40-60 from the twist pitch in the twisting process
%, Which is unsuitable and the hollow state is worse. Further, in Reference Examples 5 and 6, the pitch of the twisted wire in the third step is 6% smaller than the twist pitch in the twisting step, and the external shape is deteriorated.
【００４９】次に図３に示した交流抵抗の測定結果につ
いて説明する。Next, the measurement results of the AC resistance shown in FIG. 3 will be described.
【００５０】この交流抵抗の測定には、第１〜３の工程
の撚ピッチが同じである実施例４の複合リッツ線Ａと比
較例１のリッツ線Ｂをもちいた。For the measurement of the AC resistance, the composite litz wire A of Example 4 and the litz wire B of Comparative Example 1 having the same twist pitch in the first to third steps were used.
【００５１】先ず、実施例４の複合撚リッツ線Ａは、第
１の工程（撚ピッチ１７mm）で得た孫撚線を第１の工程
と同一方向に撚合わせる第２の工程（撚ピッチ４８mm）
において、撚戻しを行うことにより、孫撚線の撚ピッチ
は２６．３mmに変化し一旦粗くなる。そして、複数本の
孫撚線は撚合せによって撚戻し前の撚ピッチ１７mmに戻
される。この撚戻し、撚合せの過程で孫撚構成は崩さ
れ、不安定な状態になっている。さらに第２の工程と反
対方向に撚合せる第３の工程（撚ピッチ４０mm）では、
撚戻しによって撚込まれ孫撚線のピッチは１１．９mm
に、子撚線のピッチは２１．８mmに変化し前に比べて細
かくなる。そして、複数本の子撚線の撚合せによって、
撚戻し前に撚ピッチ（孫撚線の撚ピッチ１７mm，子撚線
の撚ピッチ４８mm）に戻される。この時孫撚線は第２の
工程において、不安定になっているので、子撚線構成が
崩れ、子撚線は扇形形状になるが、親撚線構成は崩れ難
く撚の状態が均一で安定である。扇形形状を形成するこ
とにより安定した中空構造が得られ、撚の状態が均一で
外観が良くなり、また図３に示すように高周波領域での
交流抵抗の増加を低減できる。First, the composite twisted litz wire A of Example 4 was obtained by twisting the grandchild strand obtained in the first step (twist pitch 17 mm) in the same direction as the first step (twist pitch 48 mm). )
By performing the untwisting, the twist pitch of the grandchild strand changes to 26.3 mm and once becomes coarse. Then, the plurality of grandchild strands are returned to a twist pitch of 17 mm before untwisting by twisting. During the process of twisting back and twisting, the configuration of the grandchild twist is broken and the state is unstable. In the third step (twist pitch 40 mm) of twisting in the opposite direction to the second step,
The pitch of the grandson strand is 11.9mm.
In addition, the pitch of the strand wire changes to 21.8 mm, which is finer than before. And by twisting multiple strands,
Before the untwisting, the wire is returned to the twist pitch (twist pitch of the grand strand wire: 17 mm, twist pitch of the child strand wire: 48 mm). At this time, since the grandchild strand is unstable in the second step, the child strand configuration is collapsed, and the child strand has a fan shape, but the parent strand configuration is hard to collapse and the twisted state is uniform. It is stable. By forming a sector shape, a stable hollow structure can be obtained, the twist state is uniform and the appearance is improved, and as shown in FIG. 3, an increase in AC resistance in a high frequency region can be reduced.
【００５２】次に、比較例１の複合リッツ線Ｂは、第１
の工程（撚ピッチ１７mm）で得た孫撚線を第１の工程と
反対方向に撚合わせる第２の工程（撚ピッチ４８mm）に
おいて撚戻しを行うことにより、孫撚線のピッチは１
２．５mmに変化し一旦細かくなる。そして、複数本の孫
撚線は撚合せによって撚戻し前のピッチ１７mmに戻され
るが、孫撚構成は崩れ難くなる。さらに第２の工程と反
対方向に撚合せる第３の工程（撚ピッチ４０mm）では撚
戻しにより撚込まれ、孫撚線のピッチは２９．５mmに、
子撚線のピッチは２１．８mmに変化し撚戻し前に比べて
細かくなる。そして複数本の子撚線の撚合せによって、
撚戻し前の撚ピッチ（孫撚線の撚ピッチ１７mm，子撚線
の撚ピッチ４８mm）に戻される。この時孫撚構成と子撚
構成は崩れ難いので、子撚線が扇形形状を形成しない。
そのため外観は良いが、安定した中空構造が得られず、
高周波領域での交流抵抗の増加も低減もできない。Next, the composite litz wire B of Comparative Example 1
In the second step (twist pitch 48 mm) of twisting the grandchild strand obtained in the step (twist pitch 17 mm) in the opposite direction to the first step, the pitch of the grandchild strand is 1
It changes to 2.5mm and becomes fine once. Then, the plurality of grandchild strands are returned to the pitch of 17 mm before the untwisting by twisting, but the grandchild strand configuration is hard to collapse. Further, in the third step (twist pitch 40 mm) of twisting in the opposite direction to the second step, twisting is performed by untwisting, and the pitch of the grandchild strand is 29.5 mm.
The pitch of the twisted strand changes to 21.8 mm, which is finer than before twisting. And by twisting multiple strands,
It is returned to the twist pitch before twisting (twist pitch of the grandchild strand 17 mm, twist pitch of the child strand 48 mm). At this time, since the grandchild strand configuration and the child strand configuration are not easily collapsed, the child strand does not form a fan shape.
Therefore, the appearance is good, but a stable hollow structure cannot be obtained.
Neither increase nor decrease of the AC resistance in the high frequency range is possible.
【００５３】このように複合撚リッツ線の交流抵抗につ
いては図３から明らかなように実施例４の中空リッツ線
Ａは比較例１の複合撚リッツ線Ｂと比較して、１００ｋ
Ｈｚ近傍において交流抵抗値で約３５％の低減効果が見
られ、本発明の効果が顕著に現れていることが分かる。
従って、本発明により得られた中空リッツ線を高周波コ
イルの巻線として使用することにより、その電力損失を
大幅に低減することが可能となる。As can be seen from FIG. 3, the alternating-current resistance of the composite twisted litz wire of the fourth embodiment is different from that of the hollow twisted litz wire B of the first comparative example by 100 k.
In the vicinity of Hz, the effect of reducing the AC resistance value by about 35% is seen, and it is understood that the effect of the present invention is remarkably exhibited.
Therefore, by using the hollow litz wire obtained by the present invention as a winding of a high-frequency coil, it is possible to greatly reduce the power loss.
【００５４】[0054]
【発明の効果】本発明の中空リッツ線の製造方法は、従
来のリッツ線の製造方法では得られなかった中空リッツ
線の製造を可能にするものであり、トランスやチョーク
に用いた場合に、高周波領域での巻線による損失の低減
や、機器の小形化に寄与し、産業に寄与するところ極め
て大である。The method for manufacturing a hollow litz wire according to the present invention makes it possible to manufacture a hollow litz wire which cannot be obtained by the conventional method for manufacturing a litz wire. It contributes to reduction of loss due to windings in a high frequency region and downsizing of equipment, which greatly contributes to industry.
【図１】本発明の中空リッツ線の製造方法における製造
工程を示す図である。FIG. 1 is a view showing a manufacturing process in a method for manufacturing a hollow litz wire of the present invention.
【図２】本発明で得られた中空リッツ線の一例を示す断
面図である。FIG. 2 is a sectional view showing an example of a hollow litz wire obtained by the present invention.
【図３】本発明で得られた中空リッツ線と比較例の複合
撚リッツ線の交流抵抗の測定結果のグラフを示す図であ
る。FIG. 3 is a diagram showing a graph of measurement results of AC resistance of a hollow litz wire obtained by the present invention and a composite twisted litz wire of a comparative example.
１ 導体 ３ 絶縁細線 ４ 孫撚線 ５ 子撚線 ６ 親撚線（中空リッツ線） １０，１１，１２，１３ 巻枠 DESCRIPTION OF SYMBOLS 1 Conductor 3 Insulated fine wire 4 Son strand 5 Child strand 6 Parent strand (hollow litz wire) 10, 11, 12, 13 Reel
───────────────────────────────────────────────────── フロントページの続き (72)発明者 上原 正丈 長野県上田市大字大屋300番地 東京特 殊電線株式会社 上田工場内 (72)発明者 山本 克彦 東京都千代田区内幸町一丁目１番６号 日本電信電話株式会社内 (72)発明者 近藤 康博 茨城県日立市日高町５丁目１番１号 日 立電線株式会社日高工場内 (72)発明者 長崎 博行 新潟県白根市能登410 理研電線株式会 社 技術研究所内 (56)参考文献 特開 平５−174638（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01B 13/02 H01B 7/00 - 7/02 H01B 7/30 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masatake Uehara 300 Oya, Ueda-shi, Nagano Pref. Tokyo Special Electric Cable Co., Ltd. Ueda Plant (72) Inventor Katsuhiko Yamamoto 1-6-1 Uchisaiwaicho, Chiyoda-ku, Tokyo Japan Inside Telegraph and Telephone Corporation (72) Inventor Yasuhiro Kondo 5-1-1 Hidaka-cho, Hitachi City, Ibaraki Prefecture Inside Hidaka Plant, Hitachi Cable Corporation (72) Inventor Hiroyuki Nagasaki 410 Noto, Shirane-shi, Niigata Prefecture RIKEN Electric Wire Co., Ltd. (56) References JP-A-5-174638 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01B 13/02 H01B 7/ 00-7/02 H01B 7/30
Claims (4)
の製造工程において、複数本の絶縁細線を第１の撚方向
で撚合せる第１の工程（孫撚工程）と、第１の工程で得
られた孫撚線の複数本を、孫撚線のピッチが孫撚工程時
の撚ピッチより大きくなる撚戻しを加えながら第１の工
程の撚方向と同じ第２の撚方向で撚合せる第２の工程
（子撚工程）と、第２の工程で得られた子撚線の複数本
を、前記孫撚線のピッチが孫撚工程時の撚ピッチより２
０〜５０％、子撚線のピッチが子撚工程時の撚ピッチよ
り４０〜６０％小さくなる撚込みがあるようピッチを設
定した撚戻し条件により、撚戻しを加えながら第２の工
程の撚方向と反対の第３の撚方向で撚合せる第３の工程
（親撚工程）により、子撚線に扇形の形状を形成させる
と共に、親撚線の中心部に空隙を形成させることを特徴
とする中空リッツ線の製造方法。In a manufacturing process of a litz wire composed of a plurality of insulated thin wires, a first step of twisting a plurality of insulated thin wires in a first twisting direction (a grandchild twisting step), and a first step Are twisted in the second twist direction, which is the same as the twist direction in the first step, while applying the untwisting in which the pitch of the descendant strands is larger than the twist pitch in the grandchild twisting step In the second step (child twisting step), a plurality of the child twisted wires obtained in the second step are separated by two times from the twist pitch in the grandchild twisting step.
Twisting in the second step is performed while twisting is performed under twisting conditions in which the pitch is set so that there is a twist of 0 to 50%, and the pitch of the twisted strand is 40 to 60% smaller than the twist pitch in the twisting step. In the third step of twisting in the third twisting direction opposite to the direction (parent twisting step), a fan-shaped shape is formed in the child twisted wire, and a void is formed in the center of the parent twisted wire. Of manufacturing hollow litz wire.
の製造工程において、第１の工程（孫撚工程）の撚方向
と第２の工程（子撚工程）の撚方向は同一方向、第３の
工程（親撚工程）の撚方向は第２の工程の撚方向とは反
対方向に撚合せることを特徴とする請求項１記載の中空
リッツ線の製造方法。2. In a manufacturing process of a litz wire composed of a plurality of insulated thin wires, a twisting direction of a first step (a grandchild twisting step) and a twisting direction of a second step (a child twisting step) are the same. 2. The method for manufacturing a hollow litz wire according to claim 1, wherein the twisting direction in the third step (parent twisting step) is twisted in a direction opposite to the twisting direction in the second step.
の製造工程において、第１の工程（孫撚工程）で製造し
た孫撚線の撚ピッチが孫撚線の仕上外径の１２〜６０
倍、第２の工程（子撚工程）で製造した子撚線の撚ピッ
チが子撚線の仕上外径の１３〜５０倍であり、第３の工
程（親撚工程）で製造した親撚線の撚ピッチが親撚線の
仕上外径の８〜１２倍になるように撚ピッチを設定した
ことを特徴とする請求項１又は２記載の中空リッツ線の
製造方法。3. In a manufacturing process of a litz wire composed of a plurality of insulated thin wires, the twist pitch of the grandchild strand manufactured in the first step (grandchild stranding step) is 12 to the finishing outer diameter of the grandchild strand. 60
Double, the twist pitch of the child strand produced in the second step (child stranding step) is 13 to 50 times the finished outer diameter of the child strand, and the parent strand produced in the third step (parent stranding step) 3. The method for producing a hollow litz wire according to claim 1, wherein the twist pitch is set such that the twist pitch of the wire is 8 to 12 times the finished outer diameter of the parent twisted wire.
の製造工程において、第１の工程（孫撚工程）で孫撚線
を製造した後、第２の工程（子撚工程）で撚合せる前記
孫撚線の本数と第３の工程（親撚工程）で撚合せる子撚
線の本数が、それぞれ６本であることを特徴とする請求
項１、２又は３記載の中空リッツ線の製造方法。4. In a manufacturing process of a litz wire composed of a plurality of insulated thin wires, after a grandchild strand is manufactured in a first step (children twisting step), a strand is formed in a second step (child twisting step). The hollow litz wire according to claim 1, 2 or 3, wherein the number of the grandchild strands to be combined and the number of the child strands to be twisted in the third step (parent twisting step) are respectively six. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33298893A JP3177611B2 (en) | 1993-12-27 | 1993-12-27 | Manufacturing method of hollow litz wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33298893A JP3177611B2 (en) | 1993-12-27 | 1993-12-27 | Manufacturing method of hollow litz wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07192560A JPH07192560A (en) | 1995-07-28 |
| JP3177611B2 true JP3177611B2 (en) | 2001-06-18 |
Family
ID=18261052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33298893A Expired - Fee Related JP3177611B2 (en) | 1993-12-27 | 1993-12-27 | Manufacturing method of hollow litz wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3177611B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008021495A (en) * | 2006-07-12 | 2008-01-31 | Matsushita Electric Ind Co Ltd | Heating apparatus |
| JP6052645B2 (en) * | 2016-02-04 | 2016-12-27 | 日立金属株式会社 | Vehicle cable |
| JP6233731B2 (en) * | 2016-11-25 | 2017-11-22 | 日立金属株式会社 | Vehicle cable |
| JP6459096B2 (en) * | 2017-10-20 | 2019-01-30 | 日立金属株式会社 | Vehicle cable and vehicle |
| EP3703077B1 (en) * | 2017-10-26 | 2022-03-09 | Furukawa Electric Co., Ltd. | Carbon nanotube composite wire, carbon nanotube-coated electric wire, and wire harness |
| EP3703079B1 (en) * | 2017-10-26 | 2022-03-09 | Furukawa Electric Co., Ltd. | Carbon nanotube composite wire, carbon nanotube-coated electric wire, and wire harness, robot wiring, and overhead line |
-
1993
- 1993-12-27 JP JP33298893A patent/JP3177611B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07192560A (en) | 1995-07-28 |
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