JPH09180550A - Layout method for electric wire, and cable - Google Patents

Layout method for electric wire, and cable

Info

Publication number
JPH09180550A
JPH09180550A JP33869095A JP33869095A JPH09180550A JP H09180550 A JPH09180550 A JP H09180550A JP 33869095 A JP33869095 A JP 33869095A JP 33869095 A JP33869095 A JP 33869095A JP H09180550 A JPH09180550 A JP H09180550A
Authority
JP
Japan
Prior art keywords
electric wire
electric
cable
electric wires
wires
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.)
Pending
Application number
JP33869095A
Other languages
Japanese (ja)
Inventor
Masao Sasagawa
▲正▼男 笹川
Tomoyuki Sugitani
知幸 杉谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Wiring Systems Ltd
Original Assignee
Sumitomo Wiring Systems Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Wiring Systems Ltd filed Critical Sumitomo Wiring Systems Ltd
Priority to JP33869095A priority Critical patent/JPH09180550A/en
Publication of JPH09180550A publication Critical patent/JPH09180550A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To effectively restrain the occurrence of electromagnetic induction in the other electric wire or a cable despite the frequency of an electric current flowing in the electric wire, and without providing a special magnetic field shielding layer. SOLUTION: This cable is arranged of a first electric wire where an electric current, varying in point of time, is flowing; and a second electric wire where an electric current having a reverse direction to the electric current flowing in the first electric wire, is flowing. At this time, the first electric wire is divided into two electric wires having conductors C1 and C2 respectively, and the second electric wire is divided into two electric wires having conductors C1' and C2' respectively; and also the respective electric wires are arranged so that the mating divided first and second electric wires can be positioned orthogonally, and the like, to make mating magnetic fields, formed by electric currents flowing in the respective electric wires, can be canceled.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、磁界の漏えいを抑
制するための電線の配置方法、及び当該方法に基づいて
電線が配置されたケーブルに関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire arranging method for suppressing leakage of a magnetic field, and a cable in which electric wires are arranged based on the method.

【0002】[0002]

【従来の技術】一般に、ケーブル内の導体に電流が流さ
れると、この電流に起因して磁界が発生する。その原理
を図9(a)(b)に基づいて説明する。この図は、導
体Cの周囲に絶縁体Iが配された第1絶縁電線と、導体
C´の周囲に絶縁体I´が配された第2絶縁電線とが対
撚されたケーブルの模式図である。図において、導体C
の一方の端末と導体C´の一方の端末とに交流電源Eが
接続され、上記導体Cの他方の端末と導体C´の他方の
端末とに負荷Zが接続されている。
2. Description of the Related Art Generally, when a current is passed through a conductor in a cable, a magnetic field is generated due to the current. The principle will be described based on FIGS. 9 (a) and 9 (b). This figure is a schematic diagram of a cable in which a first insulated wire in which an insulator I is arranged around a conductor C and a second insulated wire in which an insulator I ′ is arranged around a conductor C ′ are twisted in pairs. Is. In the figure, conductor C
The AC power source E is connected to one end of the conductor C ′ and the other end of the conductor C ′, and the load Z is connected to the other end of the conductor C and the other end of the conductor C ′.

【0003】この電気回路において、ある特定の時点で
上記導体Cを電流iが図9(a)の左から右(同図
(b)では手前から奥)に向かって流れ、導体C´を電
流i´が同図(a)の右から左(同図(b)では奥から
手前)に向かって流れているとすると、各電線の中心か
ら距離rだけ離れた位置には同図(b)に示すような磁
界h,h´が形成され、両磁界h,h´は互いに強めら
れてその合成磁界Hは磁界h,h´の2倍となる。具体
的に、各磁界h,h´,Hの大きさは次式で表される。
In this electric circuit, a current i flows from the left to the right in FIG. 9 (a) (from the front to the back in FIG. 9 (b)) in the conductor C at a certain point in time, and the current flows in the conductor C '. If i'flows from the right to the left in the figure (a) (from the back to the front in the figure (b)), it is shown in the figure (b) at a position r away from the center of each wire. Magnetic fields h and h'as shown in FIG. 2 are formed, and both magnetic fields h and h'are strengthened with each other so that the combined magnetic field H becomes twice the magnetic fields h and h '. Specifically, the magnitude of each magnetic field h, h ′, H is expressed by the following equation.

【0004】[0004]

【数1】h=h´=i/(2πr) H=2h 従って、上記ケーブルが、例えば電気自動車用電源ケー
ブルのように、大電流が時間的に変化しながら流される
(例えば交流が流される)ケーブルであると、その周辺
に強磁界が形成され、かつ当該強磁界が時間的に変化す
ることとなる。ここで、上記ケーブルの近傍に他の電線
やケーブルが配線されていると、当該他の電線やケーブ
ルの導体に上記強磁界によって大きな電流が誘導(すな
わち電磁誘導)され、雑音やノイズが引き起こされるお
それがある。
## EQU1 ## h = h '= i / (2πr) H = 2h Therefore, like the power cable for an electric vehicle, a large current is passed through the cable while changing with time (for example, an alternating current is passed). ) If it is a cable, a strong magnetic field is formed around it, and the strong magnetic field changes with time. Here, when another electric wire or cable is laid near the cable, a large current is induced (that is, electromagnetic induction) in the conductor of the other electric wire or cable by the strong magnetic field, which causes noise or noise. There is a risk.

【0005】そこで従来は、上記のような電磁誘導によ
る弊害を防ぐ手段として、上記他の電線やケーブルに磁
界遮断手段を設けるといった対策が施されている。図1
0にその一例を示す。図示のケーブルでは、導体Cと絶
縁体Iとからなる絶縁電線が対撚され、その周囲に被覆
4が配されている。そして、上記対撚電線のすぐ外側
に、銅、アルミニウム等の導体線の編組や金属箔等から
なる金属層2が円筒状に配され、この金属層2を接地す
ることにより、静電誘導に対する防護が図られるととも
に、この金属層2と被覆4との間に鉄等からなる磁性体
層(具体的には磁性テープ巻層や磁性編組)6が設けら
れることにより、外部からの磁界侵入が阻止され、当該
磁界による磁気誘導に対する防護が図られている。
Therefore, conventionally, as a means for preventing the above-mentioned harmful effects due to electromagnetic induction, measures have been taken such as providing magnetic field interruption means on the other electric wires and cables. FIG.
An example is shown in 0. In the illustrated cable, an insulated electric wire including a conductor C and an insulator I is twisted in pairs, and a coating 4 is arranged around the twisted pair. A metal layer 2 made of a braid of conductor wires such as copper and aluminum or a metal foil is arranged in a cylindrical shape just outside the twisted pair electric wire, and grounding the metal layer 2 prevents electrostatic induction. A magnetic layer 6 (specifically, a magnetic tape winding layer or a magnetic braid) 6 made of iron or the like is provided between the metal layer 2 and the coating 4 so as to protect the magnetic field from the outside. Blocked and protected against magnetic induction by the magnetic field.

【0006】[0006]

【発明が解決しようとする課題】図10に示されるケー
ブルにおいて、その外部に形成される誘導磁界の変化の
周波数をf(Hz)とすると、この磁界が内部の導体Cに
磁気誘導を引き起こすのを防ぐために最低必要な磁性体
層6の厚み寸法tmin(mm)は、比透磁率が100の鉄の
場合、次式で与えられる。
In the cable shown in FIG. 10, if the frequency of the change of the induced magnetic field formed outside the cable is f (Hz), this magnetic field causes magnetic induction in the conductor C inside. The minimum required thickness t min (mm) of the magnetic layer 6 for preventing the above is given by the following equation in the case of iron having a relative magnetic permeability of 100.

【0007】[0007]

【数2】t=15.9/√f 従って、f= 100Hz のとき tmin=1.59mm f= 1kHz のとき tmin=0.50mm f=100kHz のとき tmin=0.05mm f= 1MHz のとき tmin=0.016mm となる。[Number 2] t = 15.9 / vf Thus, when f = 100Hz t min = 1.59mm f = 1kHz when t min = 0.50mm f = 100kHz when t min = 0.05mm f = 1MHz when t min = It will be 0.016 mm.

【0008】これらの数値から理解できるように、外部
磁界の変化の周波数が低いほど、磁性体層6に大きな厚
み寸法が要求される。
As can be understood from these numerical values, the lower the frequency of change of the external magnetic field, the larger the thickness dimension of the magnetic layer 6 is required.

【0009】しかしながら、電線やケーブルに十分な可
撓性を与え、また上記磁性体層6によって完全円筒状に
絶縁電線を包む必要があることを考慮すると、磁性体層
6の厚み寸法を 0.5mm 以上にすることは事実上困難で
ある。従って、1kHz 以下の周波数で変化する磁界に対
しては磁気遮断の効果がほとんど期待できないことにな
る。実際、電気鉄道に並設されているいわゆる電磁遮蔽
ケーブルでは、通常使用される商用周波数領域(約60H
z)において、遮断係数(遮断層がないときの被誘導電
圧に対する遮断層がある時の被誘導電圧の比)を30%
以下に抑えることは非常に困難であることが確認されて
いる。
However, considering that it is necessary to give the wire or cable sufficient flexibility and to wrap the insulated wire in the complete cylindrical shape with the magnetic layer 6, the thickness of the magnetic layer 6 is 0.5 mm. It is practically difficult to do the above. Therefore, the magnetic blocking effect can hardly be expected for a magnetic field changing at a frequency of 1 kHz or less. In fact, in so-called electromagnetic shielded cables that are installed in parallel on electric railways, the commercial frequency range that is normally used (about 60H
In z), the cutoff coefficient (ratio of the induced voltage when there is a blocking layer to the induced voltage when there is no blocking layer) is 30%.
It has been confirmed that it is extremely difficult to keep the amount below.

【0010】また、高周波領域の磁界は遮蔽できるとい
えども、上記磁性体層6を付加する分だけケーブルの重
量及び径が大きくなり、可撓性も低くなる欠点は解消さ
れ得ない。
Although the magnetic field in the high frequency region can be shielded, the drawback that the weight and the diameter of the cable are increased by the addition of the magnetic layer 6 and the flexibility is lowered cannot be solved.

【0011】以上は、被誘導側のケーブルに磁性体層6
を設けた場合を説明したが、誘導側のケーブルに磁性体
層6を設ける場合についても同様である。すなわち、ケ
ーブル内で発生した磁界をケーブル外に漏えいさせない
目的で当該ケーブルに磁性体層6を設ける場合も、当該
磁界の周波数が低い場合には、この磁界の漏えいを効果
的に抑制することはできず、他の電線やケーブルに電磁
誘導を引き起こすことは十分に防止できないことにな
る。
The above is the magnetic layer 6 on the cable on the guided side.
Although the case where the magnetic layer 6 is provided has been described, the same applies to the case where the magnetic layer 6 is provided on the cable on the induction side. That is, even when the magnetic layer 6 is provided on the cable for the purpose of preventing the magnetic field generated in the cable from leaking to the outside of the cable, it is possible to effectively suppress the leakage of the magnetic field when the frequency of the magnetic field is low. It is impossible to prevent electromagnetic induction in other electric wires or cables.

【0012】[0012]

【課題を解決するための手段】本発明者等は、上記課題
を解決するための手段として、上記のような磁界遮蔽層
の使用によって磁界の侵入や漏えいを防ぐのではなく、
電線の特殊な配置によって磁界同士を打消し合わせ、合
成磁界そのものを消滅もしくは低減させる手段に想到
し、本発明に至った。
Means for Solving the Problems As a means for solving the above-mentioned problems, the present inventors do not prevent the invasion and leakage of the magnetic field by using the magnetic field shielding layer as described above.
The present invention has been devised as a means for canceling or reducing the magnetic fields by a special arrangement of the electric wires to eliminate or reduce the synthetic magnetic field itself, and arrived at the present invention.

【0013】すなわち、本発明は、時間的に変動する電
流が流される第1電線と、この第1電線に流される電流
と逆向きの電流が流される第2電線とを配置する方法で
あって、上記第1電線及び第2電線をそれぞれ複数本に
分割し、かつ各電線を流れる電流により形成される磁界
同士が相殺されるように各電線を配置する電線の配置方
法である。
That is, the present invention is a method of arranging a first electric wire through which a time-varying electric current is passed and a second electric wire through which a current in the opposite direction to the current passed through the first electric wire is passed. The first electric wire and the second electric wire are each divided into a plurality of electric wires, and the electric wires are arranged such that magnetic fields formed by currents flowing through the electric wires are offset from each other.

【0014】また本発明は、時間的に変動する電流が流
される第1電線と、この第1電線に流される電流と逆向
きの電流が流される第2電線と、これら第1電線及び第
2電線を覆う被覆とを備えたケーブルにおいて、上記第
1電線及び第2電線をそれぞれ複数本に分割し、かつ各
電線を流れる電流により形成される磁界同士が相殺され
るように各電線を配置したものである。
Further, according to the present invention, a first electric wire in which a time-varying electric current is passed, a second electric wire in which an electric current in the opposite direction to the electric current passed in the first electric wire is passed, and the first electric wire and the second electric wire In a cable provided with a cover for covering the electric wires, the first electric wire and the second electric wire are each divided into a plurality of pieces, and the electric wires are arranged so that magnetic fields formed by currents flowing through the electric wires cancel each other out. It is a thing.

【0015】これらの構成によれば、各電線を流れる電
流によって形成される磁界同士が打消し合い、その合成
磁界自体が消滅もしくは低減されるので、特にケーブル
に磁界遮蔽層を設けなくても、他の電線やケーブルに磁
気誘導が発生するのを防ぐことができる。
According to these structures, the magnetic fields formed by the currents flowing through the electric wires cancel each other out, and the combined magnetic field itself disappears or is reduced. Therefore, even if the magnetic field shielding layer is not provided on the cable, It is possible to prevent magnetic induction from occurring in other electric wires and cables.

【0016】より具体的には、上記第1電線及び第2電
線をそれぞれ2本ずつに分割し、分割された第1電線同
士が対角に位置しかつ分割された第2電線同士が対角に
位置するように各電線を配置すればよい。これにより、
各電線において形成される磁界同士は有効に相殺され
る。
More specifically, each of the first electric wire and the second electric wire is divided into two parts, the divided first electric wires are diagonally located, and the divided second electric wires are diagonally arranged. It suffices to arrange the electric wires so that they are located at. This allows
The magnetic fields formed in each wire effectively cancel each other out.

【0017】その原理を図1(a)(b)を例にとって
説明する。図において、第1電線は、導体C1及び絶縁
体I1をもつ絶縁電線と、導体C2及び絶縁体I2をも
つ絶縁電線とに分割され、交流電源Eの一方の端子Aと
負荷Zの一方の端子Bとの間に並列に配されている。従
って、両絶縁電線には電流iが分流し、電線同士の抵抗
が同等であるとするとi/2ずつ電流が流れることにな
る。また、第2電線も、導体C1´及び絶縁体I1´を
もつ絶縁電線と、導体C2´及び絶縁体I2´をもつ絶
縁電線とに分割され、交流電源Eの他方の端子A´と負
荷Zの他方の端子B´との間に並列に配されており、両
絶縁電線に電流がi/2ずつ流れる状態となっている。
The principle will be described with reference to FIGS. 1A and 1B as an example. In the figure, the first electric wire is divided into an insulated electric wire having a conductor C1 and an insulator I1 and an insulated electric wire having a conductor C2 and an insulator I2, and one terminal A of the AC power source E and one terminal of the load Z. It is arranged in parallel with B. Therefore, the current i is shunted to both insulated wires, and if the resistances of the wires are equal, a current flows by i / 2. The second electric wire is also divided into an insulated electric wire having the conductor C1 ′ and the insulator I1 ′ and an insulated electric wire having the conductor C2 ′ and the insulator I2 ′, and the other terminal A ′ of the AC power source E and the load Z. Are arranged in parallel with the other terminal B ′ of the above, and a current flows in both insulated wires by i / 2.

【0018】このように第1電線及び第2電線をそれぞ
れ2分割し、かつ、図1(b)に示すように2本の第1
電線同士が対角に位置し、かつ2本の第2電線同士が対
角に位置するように各電線を配すると、導体C1を流れ
る電流と導体C1´を流れる電流とによって形成される
磁界(同図下向きの磁界)h/2と、導体C2を流れる
電流と導体C2´を流れる電流とで形成される磁界(同
図上向きの磁界)h/2とが相殺されるとともに、導体
C1を流れる電流と導体C2´を流れる電流とで形成さ
れる磁界(同図左向きの磁界)h/2と、導体C2を流
れる電流と導体C1´を流れる電流とで形成される磁界
(同図右向きの磁界)h/2とが相殺されることとな
り、全電線の合成磁界はほとんど0になる。
In this way, the first electric wire and the second electric wire are each divided into two, and as shown in FIG.
When the electric wires are arranged so that the electric wires are diagonally positioned and the two second electric wires are diagonally positioned, a magnetic field formed by a current flowing through the conductor C1 and a current flowing through the conductor C1 ′ ( The downward magnetic field h / 2 in the figure and the magnetic field (upward magnetic field) h / 2 formed by the current flowing in the conductor C2 and the current flowing in the conductor C2 'are offset and flow in the conductor C1. A magnetic field h / 2 formed by an electric current and a current flowing through the conductor C2 ′ (a magnetic field facing left in the figure) and a magnetic field formed by a current flowing through the conductor C2 and a current flowing through the conductor C1 ′ (a magnetic field facing right in the figure). ) H / 2 is canceled out, and the combined magnetic field of all electric wires becomes almost zero.

【0019】このように、2本の第1電線と2本の第2
電線とからなる電線群で磁界同士が相殺されるので、こ
の電線群を複数組組み合わせてケーブルを構成してもよ
い。
Thus, two first electric wires and two second electric wires
Since the magnetic fields cancel each other out in the electric wire group including the electric wires, a plurality of electric wire groups may be combined to form a cable.

【0020】この場合、有効な磁界相殺作用を得るに
は、各電線群において電線相互の位置関係が崩れないよ
うに配慮することが好ましい。具体的には、各々の電線
群において電線同士を撚り合わせたり、各々の電線群に
おいて電線同士を固定する固定部材を備えたり、各電線
の断面形状を中心角が90°の扇形とし、その平面部同
士が当接する状態で各電線を配置したりする手段が好適
である。
In this case, in order to obtain an effective magnetic field canceling action, it is preferable to take care so that the positional relationship between the wires in each wire group is not broken. Specifically, the electric wires in each electric wire group are twisted together, or a fixing member for fixing the electric wires in each electric wire group is provided, or the cross-sectional shape of each electric wire is a fan shape with a central angle of 90 °, and its plane A means for arranging the electric wires in a state where the parts are in contact with each other is suitable.

【0021】また、上記電線群同士を撚り合わせてもよ
く、この場合には、各電線を均等に電流が流れるように
構成する(すなわち全電線の抵抗が均等となるように構
成する)のが好ましい。具体的には、全電線における導
体断面積を等しくし、各電線のケーブル断面内での相対
位置関係が長さ方向に均等となるように配置し、かつ全
電線の長さが略同等となるように電線群同士を撚り合わ
せるようにすればよく、そのためには、中心に芯材を配
し、この芯材の外周面上で電線群同士を撚り合わせる手
段が有効である。また、全電線を均等に電流が流れるよ
うにすべく、各電線のインピーダンスが均等化されるよ
うに各電線の導体断面積を設定するようにしてもよい。
Further, the above-mentioned electric wire groups may be twisted together, and in this case, it is preferable that the electric currents flow through the electric wires evenly (that is, the resistances of all the electric wires are equal). preferable. Specifically, the conductor cross-sectional areas of all the wires are made equal, and the relative positions of the wires in the cable cross-section are arranged so as to be uniform in the length direction, and the lengths of all the wires are substantially equal. As described above, the wire groups may be twisted together. For that purpose, a means in which a core material is arranged at the center and the wire groups are twisted on the outer peripheral surface of the core material is effective. Further, the conductor cross-sectional area of each electric wire may be set so that the impedance of each electric wire is equalized so that the electric current flows evenly through all the electric wires.

【0022】上記ケーブルの端末処理形態としては、全
ての第1電線の端末を共通の第1端子部材に接続し、全
ての第2電線の端末を共通の第2端子部材に接続すると
ともに、上記第1端子部材と第2端子部材とを両端子部
材間に絶縁材を介在させた状態で一体化したものが好ま
しい。この構造によれば、全電線の端末を一括処理で
き、かつ、第1端子部材と第2端子部材との間に介在す
る絶縁材によって両端子間の短絡を確実に防止できる。
As the terminal treatment form of the cable, the terminals of all the first electric wires are connected to the common first terminal member, the terminals of all the second electric wires are connected to the common second terminal member, and It is preferable that the first terminal member and the second terminal member are integrated with each other with an insulating material interposed therebetween. According to this structure, the terminals of all the electric wires can be collectively processed, and the insulating material interposed between the first terminal member and the second terminal member can surely prevent a short circuit between both terminals.

【0023】[0023]

【発明の実施の形態】本発明の第1の実施の形態を図2
(a)に示す。ここに示す電線群11では、第1電線
が、導体C1と絶縁体I1とを有する絶縁電線と、導体
C2と絶縁体I2とを有する絶縁電線とに分割され、第
2電線が、導体C1´と絶縁体I1´とを有する絶縁電
線と、導体C2´と絶縁体I2´とを有する絶縁電線と
に分割されており、全導体の断面積は全て等しく設定さ
れている。そして、第1電線の分割線同士が対角に位置
し(図では上下に位置し)、第2電線の分割線同士も対
角に位置する(図では左右に位置する)状態で、各電線
が配置され、かつ撚り合わされており、その外側が被覆
14で覆われることにより、電線同士の相対位置が固定
されている。
FIG. 2 shows a first embodiment of the present invention.
(A). In the electric wire group 11 shown here, the first electric wire is divided into an insulated electric wire having the conductor C1 and the insulator I1 and an insulated electric wire having the conductor C2 and the insulator I2, and the second electric wire is the conductor C1 ′. And an insulator I1 'and an insulated wire having a conductor C2' and an insulator I2 ', and the cross-sectional areas of all conductors are set to be equal. Then, the dividing lines of the first electric wire are diagonally located (upper and lower in the figure), and the dividing lines of the second electric wire are also diagonally located (left and right in the figure), and each electric wire is Are arranged and twisted together, and the outer sides of the wires are covered with the coating 14, whereby the relative positions of the electric wires are fixed.

【0024】各電線への交流電源及び負荷の接続形態は
前記図1に示したものと同等であり、分割された2本の
第1電線は、上記図1における交流電源Eの一方の端子
Aと負荷Zの一方の端子Bとの間に並列に配され、分割
された2本の第2電線は、交流電源Eの他方の端子A´
と負荷Zの他方の端子B´との間に並列に配されてい
る。
The connection form of the AC power source and the load to each electric wire is the same as that shown in FIG. 1, and the two divided first electric wires are one terminal A of the AC power source E in FIG. The two second electric wires, which are arranged in parallel between the terminal B and one terminal B of the load Z and are divided, are the other terminals A ′ of the AC power source E.
And the other terminal B ′ of the load Z are arranged in parallel.

【0025】この電線群11によれば、導体C1,C2
に同じ方向に同等の電流が流されるとともに、導体C1
´,C2´に上記導体C1,C2とは逆方向に同等の電
流が流されることにより、前記図1で説明したように、
各導体を流れる電流により形成される磁界同士が相殺さ
れ、その合成磁界はほとんど0になる。従って、特に磁
界遮蔽層をケーブル内に設けなくても、このケーブルの
近傍に配された電線やケーブルに磁気誘導を引起こすの
を防ぐことができる。
According to this wire group 11, the conductors C1 and C2 are
An equal current is applied in the same direction, and the conductor C1
As described above with reference to FIG. 1, the same current flows in the opposite direction to the conductors C1 and C2, through ′ and C2 ′.
The magnetic fields formed by the currents flowing through the conductors cancel each other out, and the combined magnetic field becomes almost zero. Therefore, even if a magnetic field shielding layer is not provided in the cable, it is possible to prevent magnetic induction in an electric wire or a cable arranged near the cable.

【0026】上記電線群11は、そのまま単独でケーブ
ルとして用いることが可能であるが、第2の実施の形態
として図3に示すように、上記電線群11を複数本束ね
て互いに撚り合わせ、その外側を被覆(外部保護被覆)
12で覆って多芯ケーブル10として構成してもよい。
この場合も、各電線群11における導体C1,C2に同
じ方向から同等の電流を流し、これと逆の方向から導体
C1´,C2´に同等の電流を流すことにより、磁界相
殺作用を得ることができる。
The electric wire group 11 can be used alone as a cable as it is, but as shown in FIG. 3 as a second embodiment, a plurality of the electric wire groups 11 are bundled and twisted together. External coating (external protective coating)
It may be covered with 12 to form the multi-core cable 10.
Also in this case, the magnetic field canceling effect can be obtained by causing the conductors C1 and C2 in each electric wire group 11 to flow the same current from the same direction and to flow the same current to the conductors C1 ′ and C2 ′ from the opposite direction. You can

【0027】なお、この多芯ケーブル10では、必ずし
も4本の電線束を被覆11で覆う必要はないが、良好な
磁界相殺作用を維持するには、各電線群11において電
線同士の配置が崩れないように工夫を施すことが好まし
い。具体的には、図2(b)に示すように、4本の電線
同士を押え巻テープ16で束ねたり、同図(c)に示す
ように、各電線の断面形状を中心角が90°の扇形と
し、その平面部同士を当接させた状態で撚り合わせたり
する手段が有効である。
In this multi-core cable 10, it is not always necessary to cover the bundle of four electric wires with the coating 11, but in order to maintain a good magnetic field canceling action, the arrangement of the electric wires in each electric wire group 11 collapses. It is preferable to devise it so that it does not exist. Specifically, as shown in FIG. 2 (b), four electric wires are bundled with a holding tape 16, or as shown in FIG. 2 (c), the cross-sectional shape of each electric wire has a central angle of 90 °. It is effective to use a fan shape and twist the flat parts in a state where the flat parts are in contact with each other.

【0028】第3の実施の形態を図4に基づいて説明す
る。
The third embodiment will be described with reference to FIG.

【0029】本発明において、上記磁界相殺作用を安定
して得るには、全導体を流れる電流の大きさを全て等し
くする(換言すれば全導体のインピーダンスを全て等し
くする)ことが好ましい。しかし、前記図3に示したよ
うに電線群11をケーブル半径方向に積層した状態で撚
り合わせた場合、各導体の撚り込み長さはケーブル中心
からの半径距離rが大きいほど大きくなるため、各導体
の断面積が相互等しいとすると、半径方向外側に配され
る導体の抵抗が半径方向内側に配される導体の抵抗より
も大きくなり、その分、半径方向外側の導体を流れる電
流が半径方向内側の導体を流れる電流よりも小さくな
る。このように各導体によって流れる電流がばらつく
と、多芯ケーブル10全体として良好な磁界相殺作用が
安定して得られにくくなる。
In the present invention, in order to stably obtain the above-mentioned magnetic field canceling action, it is preferable that all the currents flowing through all the conductors have the same magnitude (in other words, all the impedances of all the conductors have the same impedance). However, as shown in FIG. 3, when the electric wire group 11 is twisted in a laminated state in the cable radial direction, the twisted length of each conductor increases as the radial distance r from the cable center increases. Assuming that the conductors have the same cross-sectional area, the resistance of the conductors arranged on the outer side in the radial direction becomes larger than the resistance of the conductor arranged on the inner side in the radial direction. It is smaller than the current flowing through the inner conductor. If the current flowing through each conductor varies in this way, it becomes difficult to stably obtain a good magnetic field canceling action for the multi-core cable 10 as a whole.

【0030】そこで、図4に示すケーブルでは、ケーブ
ル中心に芯材18が配され、この芯材18の外周面上で
複数(図例では4つ)の電線群11同士が撚り合わされ
た状態で、その外側が被覆20で覆われている。このケ
ーブルによれば、各電線群11の半径位置が全て等しい
ので、全導体の長さを等しくでき、従って、全導体の断
面積を等しく設定することにより、全導体に電流を均等
に流すことができ、より安定した磁界相殺作用を得るこ
とができる。
Therefore, in the cable shown in FIG. 4, a core material 18 is arranged at the center of the cable, and a plurality of (four in the illustrated example) electric wire groups 11 are twisted on the outer peripheral surface of the core material 18. , Its outside is covered with a coating 20. According to this cable, since the radial positions of all the electric wire groups 11 are all the same, the lengths of all the conductors can be made equal. Therefore, by setting the cross-sectional areas of all the conductors to be equal, the current can be evenly applied to all the conductors. Therefore, a more stable magnetic field canceling action can be obtained.

【0031】さらに導体の本数を増やしたい場合には、
第4の実施の形態として図5に示すように、前記図4に
示したケーブルを複数本組み合わせ、これらのケーブル
を芯材22の外周面上で互いに撚り合わせることによ
り、多数組の電線群(図例では16組の電線群)11を
全て同じ長さにしながら配置できる。
To further increase the number of conductors,
As shown in FIG. 5 as a fourth embodiment, a plurality of cables shown in FIG. 4 are combined, and these cables are twisted together on the outer peripheral surface of the core material 22 so that a large number of electric wire groups ( In the illustrated example, 16 sets of electric wire groups 11 can be arranged while all having the same length.

【0032】なお、図4や図5に示した電線配置が都合
上できない場合、すなわち全導体の長さを等しくできな
い場合には、その長さに応じて導体の断面積を異なら
せ、最終的に全導体の抵抗が等しくなるように(すなわ
ちインピーダンスが等しくなるように)すればよい。
When the electric wire layout shown in FIGS. 4 and 5 cannot be done conveniently, that is, when the lengths of all the conductors cannot be made equal, the cross-sectional areas of the conductors are made different according to the lengths, and finally, Then, the resistances of all conductors should be equal (that is, the impedances should be equal).

【0033】具体的には、以下の要領で各導体の断面積
を設定できる。まず、各導体の撚り中心からの半径距離
をr、撚りピッチをPとすると、この1撚りピッチPに
導体が撚り込まれている長さLは、理論上次式で表され
る。
Specifically, the cross-sectional area of each conductor can be set in the following manner. First, assuming that the radial distance from the twist center of each conductor is r and the twist pitch is P, the length L in which the conductor is twisted in this one twist pitch P is theoretically expressed by the following equation.

【0034】[0034]

【数3】L=√{P2+(2πr)2} 一方、各導体の固有の抵抗率をρ、断面積をSとする
と、撚りピッチ単位の各導体の抵抗Rは、次式で表され
る。
[Equation 3] L = √ {P 2 + (2πr) 2 } On the other hand, if the intrinsic resistivity of each conductor is ρ and the cross-sectional area is S, the resistance R of each conductor in twist pitch units is given by the following equation. To be done.

【0035】[0035]

【数4】R=ρL/S よって、各導体の撚りピッチ単位の抵抗を全てRo とす
るための各導体断面積は、次式から求めることができ
る。
## EQU00004 ## R = .rho.L / S Therefore, the cross-sectional area of each conductor for making all the resistance of each conductor in the twist pitch unit Ro can be obtained from the following equation.

【0036】[0036]

【数5】S=ρL/Ro =ρ√{P2+(2πr)2}/R
o ところで、本発明のケーブルを例えば前記図1に示した
電気回路に導入するには、全第1電線の導体C1,C2
の一端を交流電源Eの端子Aに共通接続し、他端を負荷
Zの端子Bに共通接続し、全第2電線の導体C1´,C
2´の一端を交流電源Eの端子A´に共通接続し、他端
を負荷Zの端子B´に共通接続することにより、ケーブ
ル全体をあたかも1往復用の2導体のみを備えたかのよ
うな構成にする必要がある。そのための結線形態の例を
図6(a)(b)に示す。
## EQU5 ## S = ρL / Ro = ρ√ {P 2 + (2πr) 2 } / R
By the way, in order to introduce the cable of the present invention into the electric circuit shown in FIG. 1, for example, the conductors C1 and C2 of all the first electric wires are used.
Is commonly connected to the terminal A of the AC power supply E and the other end is commonly connected to the terminal B of the load Z, and the conductors C1 ', C of all the second electric wires are connected.
One end of 2'is commonly connected to the terminal A'of the AC power source E, and the other end is commonly connected to the terminal B'of the load Z, so that the entire cable is configured as if only two conductors for one round trip were provided. Need to An example of a connection form for that purpose is shown in FIGS.

【0037】同図(a)では、第1電線及び第2電線が
2n本(nは自然数)に分割されたケーブルにおいて、
第1電線を構成する全ての導体C1,C2,…,C2n
の両端が直接端子A,Bに共通接続され、第2電線を構
成する全ての導体C1´,C2´,…,C2n´の両端
が直接端子A´,B´に共通接続されている。これに対
し、同図(b)では、第1電線を構成する導体のうち、
導体C1,C3,…,C2n-1がグループG1に一旦まと
められ、これらと対角の位置に各々配される導体C2,
C4,…,C2nがグループG2にまとめられてから、両
グループG1,G2の両端が端子A,Bに接続される一
方、第2電線を構成する導体のうち、導体C1´,C3
´,…,C2n-1´がグループG1´に一旦まとめられ、
これらと対角の位置に各々配される導体C2´,C4
´,…,C2n´がグループG2´にまとめられてから、
両グループG1´,G2´の両端が端子A´,B´に接
続されている。いずれの結線形態を採用しても、ケーブ
ル途中部分、すなわち各電線が前記図1等に示したよう
に配置されている部分では、上述の磁界相殺作用を得る
ことが可能である。
In FIG. 3A, in a cable in which the first electric wire and the second electric wire are divided into 2n pieces (n is a natural number),
All conductors C1, C2, ..., C2n forming the first electric wire
, Both ends are directly connected to the terminals A and B, and both ends of all the conductors C1 ′, C2 ′, ..., C2n ′ forming the second electric wire are directly connected to the terminals A ′ and B ′. On the other hand, in the figure (b), among the conductors forming the first electric wire,
The conductors C1, C3, ..., C2n-1 are once grouped into a group G1, and conductors C2 are arranged diagonally with respect to them.
, C2n are combined into a group G2, both ends of both groups G1 and G2 are connected to terminals A and B, while conductors C1 'and C3 among the conductors forming the second electric wire.
', ..., C2n-1' are once grouped into group G1 ',
Conductors C2 'and C4 arranged diagonally to these
After ', ..., C2n' are grouped into group G2 ',
Both ends of both groups G1 'and G2' are connected to terminals A'and B '. Regardless of which wiring form is adopted, the above-mentioned magnetic field canceling action can be obtained in the middle part of the cable, that is, in the part where the respective electric wires are arranged as shown in FIG.

【0038】図7及び図8は、上記図6(b)の結線形
態を採用した場合に好適なケーブル端子の構造の一例を
示したものである。
FIG. 7 and FIG. 8 show an example of a structure of a cable terminal suitable when the connection form of FIG. 6 (b) is adopted.

【0039】この端子構造は、図8(a)に示すような
第1端子部材30と、同図(b)に示すような金属製の
第2端子部材30´とを備え、両端子部材30,30´
は全体が金属で一体に成形されている。
This terminal structure comprises a first terminal member 30 as shown in FIG. 8 (a) and a metallic second terminal member 30 'as shown in FIG. 8 (b). , 30 '
Is entirely made of metal and integrally molded.

【0040】第1端子部材30は、前記グループG1を
構成する電線の全端末がまとめて挿入されて圧着接続さ
れる角筒状の圧着接続部31と、前記グループG2を構
成する電線の全端末がまとめて挿入されて圧着接続され
る角筒状の圧着接続部32とが対角に配置され、両者が
連結ブリッジ36を介して一体に連結されたものであ
り、上記圧着接続部32から先方に端子接続片34が延
設されている。
The first terminal member 30 has a rectangular tube-shaped crimp connection portion 31 into which all the terminals of the wires forming the group G1 are collectively inserted and crimp-connected, and all the terminals of the wires forming the group G2. And the cylindrical tubular crimp connection portions 32, which are collectively inserted and crimp-connected, are diagonally arranged, and both are integrally connected via a connecting bridge 36. The terminal connecting piece 34 is extended to the.

【0041】同様に、第2端子部材30´は、前記グル
ープG1´を構成する電線の全端末がまとめて挿入され
て圧着接続される角筒状の圧着接続部31´と、前記グ
ループG2´を構成する電線の全端末がまとめて挿入さ
れて圧着接続される角筒状の圧着接続部32´とが対角
に配置され、両者が連結ブリッジ36´を介して一体に
連結されたものであり、上記圧着接続部32´から先方
に端子接続片34´が延設されている。
Similarly, in the second terminal member 30 ', all the ends of the electric wires forming the group G1' are collectively inserted and crimp-connected, and the group G2 '. All the ends of the electric wires that form the above are inserted diagonally and crimp-connecting portions 32 'in the shape of a rectangular tube to be crimp-connected, and both are integrally connected via a connecting bridge 36'. There is a terminal connection piece 34 'extending from the crimp connection 32'.

【0042】そして、図7に示すように、両端子接続片
34,34´が並んだ状態、すなわち、両連結ブリッジ
36,36´を前後に位置をずらして交差させた状態
で、4つの圧着接続部31,32,31´,32´が矩
形の4頂点に相当する位置に並ぶように両端子部材3
0,30´の形状が設定されており、この状態で両端子
部材30,30´間に絶縁材料からなる絶縁スペーサ4
0を介在させながら(すなわち両端子部材30,30´
同士を離間させながら)両端子部材30,30´が一体
化されている。
Then, as shown in FIG. 7, with the two terminal connecting pieces 34, 34 'arranged side by side, that is, with the two connecting bridges 36, 36' crossed with their front and rear positions displaced, four crimps are made. Both terminal members 3 so that the connecting portions 31, 32, 31 ', 32' are aligned at the positions corresponding to the four vertices of the rectangle.
The shapes of 0 and 30 'are set, and in this state, the insulating spacer 4 made of an insulating material is provided between both terminal members 30 and 30'.
0 (that is, both terminal members 30, 30 ')
Both terminal members 30, 30 'are integrated (while separating each other).

【0043】この構造において、上記端子接続片34を
前記図1に示した端子A(端子B)に接続し、端子接続
片34´を同図の端子A´(端子B´)に接続すること
により、上述の磁界相殺作用を得ることができる。この
構造では、ケーブル10の端末を単一の端子ブロックと
して構成できるので、その取扱いが容易であり、しか
も、両端子部材30,30´間に絶縁スペーサ40を介
在させることにより、両端子部材30,30´同士の短
絡を確実に防止することが可能となっている。
In this structure, the terminal connecting piece 34 is connected to the terminal A (terminal B) shown in FIG. 1, and the terminal connecting piece 34 'is connected to the terminal A' (terminal B ') shown in FIG. As a result, the above-mentioned magnetic field cancellation effect can be obtained. In this structure, since the end of the cable 10 can be configured as a single terminal block, it is easy to handle, and the insulating spacer 40 is interposed between the both terminal members 30 and 30 ', so that both terminal members 30 , 30 'can be reliably prevented from being short-circuited.

【0044】なお、本発明において、2分割された第1
電線と同じく2分割された第2電線(すなわち4本の電
線)同士は必ずしも撚り合わせなくてもよく、直線状態
のまま相互束ねるだけの構成としても、上記磁界相殺作
用を得ることが可能である。
In the present invention, the first divided into two parts.
Similarly to the electric wires, the second electric wires divided into two (that is, the four electric wires) do not necessarily have to be twisted together, and the magnetic field canceling action can be obtained even if the two electric wires are simply bundled in a linear state. .

【0045】[0045]

【発明の効果】以上のように本発明は、時間的に変動す
る電流が流される第1電線と、この第1電線に流される
電流と逆向きの電流が流される第2電線とをそれぞれ複
数本に分割し、かつ各電線を流れる電流により形成され
る磁界同士が相殺されるように各電線を配置するように
したものであるので、各電線を流れる電流の周波数にか
かわらず、また特に磁気遮蔽層を設けることなく、他の
電線やケーブルに磁気誘導を引き起こすのを効果的に抑
制することができる。
As described above, according to the present invention, a plurality of first electric wires through which a time-varying electric current flows and a plurality of second electric wires through which a current in the opposite direction to the electric current flowing through the first electric wire are respectively provided. The wires are arranged so that the magnetic fields formed by the currents flowing through the wires cancel each other out. It is possible to effectively suppress magnetic induction in other electric wires or cables without providing a shielding layer.

【0046】より具体的に、上記第1電線及び第2電線
をそれぞれ2本ずつに分割し、分割された第1電線同士
が対角に位置しかつ分割された第2電線同士が対角に位
置するように各電線を配置したものによれば、各電線で
形成される磁界を有効に相殺でき、他の電線等での磁気
誘導の発生を確実に防ぐことができる。
More specifically, each of the first electric wire and the second electric wire is divided into two pieces, the divided first electric wires are diagonally located, and the divided second electric wires are diagonally arranged. By arranging the electric wires so as to be positioned, it is possible to effectively cancel the magnetic field formed by the electric wires, and it is possible to reliably prevent generation of magnetic induction in other electric wires or the like.

【0047】そして、上記2本の第1電線と2本の第2
電線とからなる電線群を複数組み合わせることにより、
全体として大電流を流すことのできるケーブルを得るこ
とができる。
Then, the above two first electric wires and two second electric wires
By combining multiple electric wire groups consisting of electric wires,
It is possible to obtain a cable that can carry a large current as a whole.

【0048】このケーブルにおいて、各々の電線群にお
いて電線同士を撚り合わせたり、各々の電線群において
電線同士を固定する固定部材を備えたり、各電線の断面
形状を中心角が90°の扇形とし、その平面部同士が当
接する状態で各電線を配置したりすることにより、電線
相互の位置関係を確実に保持して良好な磁界相殺効果を
維持することができる。
In this cable, the electric wires in each electric wire group are twisted together, a fixing member for fixing the electric wires in each electric wire group is provided, and the cross-sectional shape of each electric wire is a fan shape having a central angle of 90 °, By arranging the electric wires in a state where the flat portions are in contact with each other, the positional relationship between the electric wires can be surely maintained and a good magnetic field cancellation effect can be maintained.

【0049】また、上記電線群同士を撚り合わせる場
合、全電線における導体断面積を等しくし、かつ全電線
の長さが略同等となるような相対位置関係で電線群同士
を撚り合わせたり、全電線を均等に電流が流れるように
各電線の導体断面積を設定したりすることにより、より
安定した磁界相殺効果を得ることができる。前者の場
合、中心に芯材を配し、この芯材の外周面上で電線群同
士を撚り合わせる手段をとることにより、1撚りピッチ
あたりの各電線の撚り込み長さを確実に同等にできる。
When the above wire groups are twisted together, the wire groups may be twisted in a relative positional relationship such that the conductor cross-sectional areas of all the wires are equal and the lengths of all the wires are substantially equal. A more stable magnetic field cancellation effect can be obtained by setting the conductor cross-sectional area of each electric wire so that the electric current flows evenly through the electric wire. In the former case, by arranging a core member in the center and taking a means of twisting the wire groups on the outer peripheral surface of the core member, the twisted length of each wire per twist pitch can be surely made equal. .

【0050】また、ケーブルの端子構造として、全ての
第1電線の端末を共通の第1端子部材に接続し、全ての
第2電線の端末を共通の第2端子部材に接続するととも
に、上記第1端子部材と第2端子部材とを両端子部材間
に絶縁材を介在させた状態で一体化したものによれば、
全電線の端末を一括処理できてその取扱いを容易にする
ことができ、しかも、第1端子部材と第2端子部材との
間に介在する絶縁材によって両端子間の短絡を確実に防
止できる効果が得られる。
As the cable terminal structure, the terminals of all the first electric wires are connected to the common first terminal member, the terminals of all the second electric wires are connected to the common second terminal member, and According to one in which the first terminal member and the second terminal member are integrated with the insulating material interposed between the two terminal members,
An effect that terminals of all electric wires can be collectively processed and handled easily, and a short circuit between both terminals can be reliably prevented by an insulating material interposed between the first terminal member and the second terminal member Is obtained.

【図面の簡単な説明】[Brief description of the drawings]

【図1】(a)は本発明の原理を説明するための斜視
図、(b)は同原理を説明するための正面図である。
1A is a perspective view for explaining the principle of the present invention, and FIG. 1B is a front view for explaining the principle.

【図2】(a)は本発明の第1の実施の形態を示す断面
図、(b)は電線群同士を押え巻テープで固定した状態
を示す断面図、(c)は各電線の形状を扇形に設定した
ものを示す断面図である。
2A is a cross-sectional view showing the first embodiment of the present invention, FIG. 2B is a cross-sectional view showing a state in which electric wire groups are fixed by a holding tape, and FIG. 2C is a shape of each electric wire. FIG. 4 is a cross-sectional view showing a fan-shaped configuration.

【図3】本発明の第2の実施の形態を示す断面図であ
る。
FIG. 3 is a sectional view showing a second embodiment of the present invention.

【図4】本発明の第3の実施の形態を示す断面図であ
る。
FIG. 4 is a sectional view showing a third embodiment of the present invention.

【図5】本発明の第4の実施の形態を示す断面図であ
る。
FIG. 5 is a sectional view showing a fourth embodiment of the present invention.

【図6】(a)(b)は本発明にかかるケーブルでの結
線形態を示す説明図である。
6 (a) and 6 (b) are explanatory views showing a connection form of a cable according to the present invention.

【図7】本発明にかかるケーブルの端子構造の一例を示
す斜視図である。
FIG. 7 is a perspective view showing an example of a terminal structure of a cable according to the present invention.

【図8】(a)は上記端子構造を構成する第1端子部材
の斜視図、(b)は第2端子部材の斜視図である。
FIG. 8A is a perspective view of a first terminal member constituting the terminal structure, and FIG. 8B is a perspective view of a second terminal member.

【図9】(a)は従来の電線配置の一例を示す斜視図、
(b)は同配置により形成される磁界を示す正面図であ
る。
9A is a perspective view showing an example of a conventional electric wire arrangement, FIG.
(B) is a front view showing a magnetic field formed by the same arrangement.

【図10】従来の磁界遮蔽層付ケーブルの一例を示す断
面図である。
FIG. 10 is a cross-sectional view showing an example of a conventional cable with a magnetic field shielding layer.

【符号の説明】[Explanation of symbols]

10 ケーブル 11 電線群 12,14,20,24 被覆 16 押え巻テープ 18,22 芯材 30 第1端子部材 30´ 第2端子部材 40 絶縁スペーサ C1,C2 第1電線の導体 C1´,C2´ 第2電線の導体 10 cable 11 electric wire group 12, 14, 20, 24 coating 16 holding tape 18, 22 core material 30 first terminal member 30 'second terminal member 40 insulating spacer C1, C2 conductor C1', C2 'of the first electric wire Conductor of 2 electric wires

Claims (13)

【特許請求の範囲】[Claims] 【請求項1】 時間的に変動する電流が流される第1電
線と、この第1電線に流される電流と逆向きの電流が流
される第2電線とを配置する方法であって、上記第1電
線及び第2電線をそれぞれ複数本に分割し、かつ各電線
を流れる電流により形成される磁界同士が相殺されるよ
うに各電線を配置することを特徴とする電線の配置方
法。
1. A method of arranging a first electric wire through which a time-varying electric current flows and a second electric wire through which a current in a direction opposite to the electric current flowing through the first electric wire is arranged. An electric wire arranging method, wherein each of the electric wire and the second electric wire is divided into a plurality of pieces, and the electric wires are arranged so that magnetic fields formed by currents flowing through the electric wires cancel each other.
【請求項2】 請求項1記載の電線の配置方法におい
て、上記第1電線及び第2電線をそれぞれ2本ずつに分
割し、分割された第1電線同士が対角に位置しかつ分割
された第2電線同士が対角に位置するように各電線を配
置することを特徴とする電線の配置方法。
2. The electric wire arranging method according to claim 1, wherein each of the first electric wire and the second electric wire is divided into two pieces, and the divided first electric wires are diagonally positioned and divided. An electric wire arranging method, wherein each electric wire is arranged so that the second electric wires are diagonally positioned.
【請求項3】 時間的に変動する電流が流される第1電
線と、この第1電線に流される電流と逆向きの電流が流
される第2電線と、これら第1電線及び第2電線を覆う
被覆とを備えたケーブルにおいて、上記第1電線及び第
2電線をそれぞれ複数本に分割し、かつ各電線を流れる
電流により形成される磁界同士が相殺されるように各電
線を配置したことを特徴とするケーブル。
3. A first electric wire through which a time-varying current is passed, a second electric wire through which a current in the opposite direction to the current passed through the first electric wire is passed, and the first electric wire and the second electric wire are covered. In a cable provided with a coating, each of the first electric wire and the second electric wire is divided into a plurality of pieces, and the electric wires are arranged so that magnetic fields formed by currents flowing through the electric wires cancel each other out. And the cable.
【請求項4】 請求項3記載のケーブルにおいて、上記
第1電線及び第2電線をそれぞれ2本ずつに分割し、分
割された第1電線同士が対角に位置しかつ分割された第
2電線同士が対角に位置するように各電線を配置したこ
とを特徴とするケーブル。
4. The cable according to claim 3, wherein each of the first electric wire and the second electric wire is divided into two, and the divided first electric wires are diagonally positioned and divided. A cable characterized by arranging the electric wires so that they are diagonally located.
【請求項5】 請求項4記載のケーブルにおいて、2本
の第1電線と2本の第2電線とからなる電線群を複数組
備えたことを特徴とするケーブル。
5. The cable according to claim 4, wherein a plurality of sets of electric wire groups each including two first electric wires and two second electric wires are provided.
【請求項6】 請求項5記載のケーブルにおいて、各々
の電線群において電線同士を撚り合わせたことを特徴と
するケーブル。
6. The cable according to claim 5, wherein the electric wires in each electric wire group are twisted together.
【請求項7】 請求項5または6記載のケーブルにおい
て、各々の電線群において電線同士を固定する固定部材
を備えたことを特徴とするケーブル。
7. The cable according to claim 5, further comprising a fixing member for fixing the electric wires in each electric wire group.
【請求項8】 請求項5〜7のいずれかに記載のケーブ
ルにおいて、各電線の断面形状を中心角が90°の扇形
とし、その平面部同士が当接する状態で各電線を配置し
たことを特徴とするケーブル。
8. The cable according to any one of claims 5 to 7, wherein the cross-sectional shape of each electric wire is a fan shape having a central angle of 90 °, and the electric wires are arranged so that their flat portions are in contact with each other. Characteristic cable.
【請求項9】 請求項5〜8のいずれかに記載のケーブ
ルにおいて、上記電線群同士を撚り合わせたことを特徴
とするケーブル。
9. The cable according to claim 5, wherein the electric wire groups are twisted together.
【請求項10】 請求項9記載のケーブルにおいて、全
電線の導体断面積を等しくし、かつ、全電線の長さが略
同等となるように電線群同士を撚り合わせたことを特徴
とするケーブル。
10. The cable according to claim 9, wherein the electric wire groups are twisted so that the conductor cross-sectional areas of all the electric wires are equal and the lengths of all the electric wires are substantially equal. .
【請求項11】 請求項10記載のケーブルにおいて、
中心に芯材を配し、この芯材の外周面上で電線群同士を
撚り合わせたことを特徴とするケーブル。
11. The cable according to claim 10, wherein
A cable characterized in that a core material is arranged in the center, and wire groups are twisted together on the outer peripheral surface of the core material.
【請求項12】 請求項9記載のケーブルにおいて、全
電線を均等に電流が流れるように各電線の導体断面積を
設定したことを特徴とするケーブル。
12. The cable according to claim 9, wherein a conductor cross-sectional area of each electric wire is set so that an electric current flows evenly through all the electric wires.
【請求項13】 請求項3〜12のいずれかに記載のケ
ーブルにおいて、全ての第1電線の端末を共通の第1端
子部材に接続し、全ての第2電線の端末を共通の第2端
子部材に接続するとともに、上記第1端子部材と第2端
子部材とを両端子部材間に絶縁材を介在させた状態で一
体化したことを特徴とするケーブル。
13. The cable according to claim 3, wherein the terminals of all the first electric wires are connected to a common first terminal member, and the terminals of all the second electric wires are common second terminals. A cable which is connected to a member and is integrated with the first terminal member and the second terminal member with an insulating material interposed between the both terminal members.
JP33869095A 1995-12-26 1995-12-26 Layout method for electric wire, and cable Pending JPH09180550A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33869095A JPH09180550A (en) 1995-12-26 1995-12-26 Layout method for electric wire, and cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33869095A JPH09180550A (en) 1995-12-26 1995-12-26 Layout method for electric wire, and cable

Publications (1)

Publication Number Publication Date
JPH09180550A true JPH09180550A (en) 1997-07-11

Family

ID=18320547

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33869095A Pending JPH09180550A (en) 1995-12-26 1995-12-26 Layout method for electric wire, and cable

Country Status (1)

Country Link
JP (1) JPH09180550A (en)

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Publication number Priority date Publication date Assignee Title
WO2005024851A1 (en) * 2003-09-02 2005-03-17 Sumitomo (Sei) Steel Wire Corp. Covered wire and automobile-use wire harness
US7230186B2 (en) 2003-09-02 2007-06-12 Sumitomo (Sei) Steel Wire Corp. Covered wire and automobile-use wire harness
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WO2005059926A1 (en) * 2003-12-17 2005-06-30 Advantest Corporation Coaxial cable, twist pair cable, coaxial cable unit, test device, and cpu system
US7098647B2 (en) 2003-12-17 2006-08-29 Advantest Corporation Coaxial cable unit, test apparatus, and CPU system
JP2008146916A (en) * 2006-12-07 2008-06-26 Tatsuta Electric Wire & Cable Co Ltd Low noise cable
JP2012079436A (en) * 2010-09-30 2012-04-19 Yazaki Corp Wire core bundle and communication cable having the same
JP5229381B2 (en) * 2010-10-15 2013-07-03 トヨタ自動車株式会社 Motor lead and motor coil
US10290392B2 (en) 2012-07-05 2019-05-14 Green ELMF Cables Ltd. Electric cables having self-protective properties and immunity to magnetic interferences
US9787066B2 (en) 2012-11-01 2017-10-10 Green ELMF Cables Ltd. Methods and arrangements for attenuating magnetic fields of electrical cabinets
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US10204716B2 (en) 2013-03-05 2019-02-12 Yaroslav Andreyevich Pichkur Electrical power transmission system and method
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