JP2005129473A - Air cable - Google Patents

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Publication number
JP2005129473A
JP2005129473A JP2003396352A JP2003396352A JP2005129473A JP 2005129473 A JP2005129473 A JP 2005129473A JP 2003396352 A JP2003396352 A JP 2003396352A JP 2003396352 A JP2003396352 A JP 2003396352A JP 2005129473 A JP2005129473 A JP 2005129473A
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Prior art keywords
conductor
air cable
air
insulator
groove
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JP2003396352A
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Japanese (ja)
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Tetsuo Okutsu
哲雄 奥津
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an air cable usable for multiple purposes because of its flexibility, whereby an action electrostatic capacity is reduced by making the spacing of a conductor (bare conductor) longer than usual by providing a groove, and line resistance is also reduced. <P>SOLUTION: This air cable is structured so that the groove is spirally provided in a rod-shaped insulating material, and the conductor is supported in midair in the groove part through a support part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、屈曲性のあるエアケーブルに関するものである。  The present invention relates to a flexible air cable.

従来の技術としては、パイプ内に絶縁ガス(SF6)を充填し、支持材を介し中空に導体を支持する低静電容量ケーブルがある。(特許文献1参照)  As a conventional technique, there is a low capacitance cable in which an insulating gas (SF6) is filled in a pipe and a conductor is supported in a hollow via a support material. (See Patent Document 1)

実開平6−43940号公報  Japanese Utility Model Publication No. 6-43940

しかし、上記のような形態では屈曲性をもたせることは非常に困難である。
また、導体同士が密に接しているため作用静電容量は大きく、すべての導体が裸導体ではないため低誘電体損を期待できず、絶縁被服のある導体においては絶縁体の比誘電率に左右され誘電体損が増大する。
このことは裸導体のみで多導体を構成できない構造であることに起因するものである。
また、絶縁ガスを使用するため、屋内配線等で汎用性を持たすことは困難であり、一般的な使用においては限定されるのが現状である。
本発明は上記の問題点に鑑みなされたもので、導体(裸導体)の線間距離を溝を設けることで通常より長くすることにより作用静電容量の低減、線路抵抗が減少すると共に、屈曲性があるため多目的に使用できるエアケーブルを提供することを目的とする。
However, it is very difficult to provide flexibility in the above-described form.
In addition, since the conductors are in close contact with each other, the working capacitance is large, and since all the conductors are not bare conductors, low dielectric loss cannot be expected. Depends on the dielectric loss.
This is due to the structure in which a multiconductor cannot be formed with only a bare conductor.
In addition, since insulating gas is used, it is difficult to have versatility in indoor wiring or the like, and it is currently limited in general use.
The present invention has been made in view of the above problems, and by making the distance between conductors (bare conductors) longer than usual by providing grooves, the working electrostatic capacity is reduced, the line resistance is reduced, and bending is performed. The purpose is to provide an air cable that can be used for multiple purposes.

上記課題を解決する本発明は、棒状絶縁体に螺旋状に溝を設け、その溝部分に支持部を介し、導体を中空に支持する構造とすること。また、螺旋状の複数の溝を平行に適宜間隔にて設け、それぞれの溝に導体を配置し線間の絶縁性能も有する構造とすること。棒状絶縁体の中心に直線状の導体を持つこと。さらに、螺旋状の溝を絶縁体で覆い、さらにシースを被せ、中空部には乾燥空気を封入してなること。導体が裸導体であること。棒状絶縁体が屈曲性を有してなること。その上、螺旋状の導体と中心導体が適宜間隔で離隔していることを特徴とする。  The present invention that solves the above-mentioned problems has a structure in which a groove is spirally formed in a rod-like insulator, and the conductor is supported in a hollow state via a support portion in the groove portion. In addition, a plurality of spiral grooves should be provided in parallel at appropriate intervals, and a conductor should be placed in each groove to provide insulation between lines. Have a straight conductor in the center of the rod-shaped insulator. Furthermore, the spiral groove should be covered with an insulator, covered with a sheath, and the hollow portion should be filled with dry air. The conductor is a bare conductor. The rod-shaped insulator is flexible. In addition, the spiral conductor and the center conductor are separated at an appropriate interval.

1)、構造上、導体(裸導体)の線間距離が適宜間隔にて溝を設けることにより通常のケーブルよりも長くなるため作用静電容量の低減、導体(裸導体)の気中絶縁による誘電体損の低減によってケーブルの静電容量を低くすることが可能となる。これにより線路抵抗が減少する。
2)、螺旋状の構造によってインダクタンスが上昇するため高調波電流の低減が期待でき、中心導体においては逆に静電容量を大きく、インダクタンスが低くなる状態であるから高調波等ノイズを逃がすための接地線としての効果を期待できる。つまり、1本のケーブルで相反する2つの要素が得られることとなる。
3)、従来は不可能であった屈曲性のある気中絶縁ケーブルが実現する。
4)、従来の技術に比べ大幅な規模の縮小化。
1) Due to the structure, the distance between the conductors (bare conductors) becomes longer than that of a normal cable by providing grooves at appropriate intervals, thereby reducing the working electrostatic capacity and the air insulation of the conductors (bare conductors). By reducing the dielectric loss, the capacitance of the cable can be lowered. This reduces the line resistance.
2) Since the inductance rises due to the spiral structure, a reduction in harmonic current can be expected. On the contrary, the center conductor has a large capacitance and a low inductance, so that noise such as harmonics can be released. The effect as a grounding wire can be expected. That is, two conflicting elements can be obtained with one cable.
3) A flexible air-insulated cable that has been impossible in the past is realized.
4) Significant reduction in scale compared to conventional technology.

エアケーブル1は、平行な螺旋状に2つの溝2aを切った棒状絶縁体2(屈曲性を有するポリエチレン等)の溝2a・2aに支持部3(ポリエチレン等の比誘電率の低い素材)を介し、導体4(裸導体)を支持部3以外どこにも接しないよう中空に浮かしてある。
また、2本の導体4が平行な螺旋状に巻きついている構造を示している。
さらに、棒状絶縁体2中心部にも3本目の導体5を存在させている。
溝2a・2aを含め外周部を絶縁体の層6で覆う。
このとき溝2a・2aの空間(中空部2bを形成し、乾燥空気を封入する)を維持することが肝要である。
最外周部はPVCあるいはポリエチレン等によるシース7によって仕上げるものとする。
The air cable 1 has a support 3 (a material having a low relative dielectric constant such as polyethylene) in the grooves 2a and 2a of a rod-like insulator 2 (flexible polyethylene or the like) in which two grooves 2a are cut in parallel spirals. Therefore, the conductor 4 (bare conductor) is floated in a hollow so as not to contact anywhere other than the support portion 3.
Further, a structure in which two conductors 4 are wound in parallel spirals is shown.
Further, a third conductor 5 is also present at the center of the rod-like insulator 2.
The outer periphery including the grooves 2a and 2a is covered with an insulating layer 6.
At this time, it is important to maintain the space of the grooves 2a and 2a (the hollow portion 2b is formed and the dry air is enclosed).
The outermost periphery is finished with a sheath 7 made of PVC or polyethylene.

なお、支持部3は、長方形帯状の上部に係止溝3a1を形成してなる支持本体3aと、押え板3bとから構成され、導体4(裸導体)を係止溝3a1に係止させ、押え板3bにて抜止するものである。  The support part 3 is composed of a support body 3a formed with a locking groove 3a1 in the upper part of a rectangular band and a presser plate 3b, and the conductor 4 (bare conductor) is locked to the locking groove 3a1, The presser plate 3b is used for retaining.

上記エアケーブルの使用例として業務音響の分野での活用が期待される。
ケーブルの特性によって素材(音)の出力が変わってしまうというほど厳密な分野であり、本発明はそのような用途において多大な効果を発揮すると期待できる。
As an example of the use of the air cable, it is expected to be used in the field of business sound.
The field is so strict that the output of the material (sound) changes depending on the characteristics of the cable, and the present invention can be expected to exert a great effect in such applications.

別の使用例として一般産業用途への応用が考えられる。
なお、支持部3は上記実施例に限定せず、同様な機能を有するものであれば他の形態でもよい。
As another example of use, application to general industrial use can be considered.
In addition, the support part 3 is not limited to the said Example, Other forms may be sufficient as long as it has the same function.

本発明のエアケーブルの一実施例を示す側面図。  The side view which shows one Example of the air cable of this invention. 本発明のエアケーブルの一実施例を示す断面図。  Sectional drawing which shows one Example of the air cable of this invention. 本発明のエアケーブルの一実施例を示す斜視図。  The perspective view which shows one Example of the air cable of this invention.

符号の説明Explanation of symbols

1−−−エアケーブル
2−−−絶縁体
2a−−溝
3−−−支持部
4−−−導体(裸導体)
5−−−中心導体
6−−−絶縁層
7−−−シース(被覆)
1 --- Air cable 2 --- Insulator 2a--Groove 3 --- Supporting section 4 --- Conductor (bare conductor)
5 --- Center conductor 6 --- Insulating layer 7 --- Sheath (cover)

Claims (7)

棒状絶縁体に螺旋状に溝を設け、その溝部分に支持部を介し、導体を中空に支持する構造とすることを特徴とするエアケーブル。  An air cable characterized in that a rod-like insulator is provided with a spiral groove, and a conductor is supported in a hollow space through a support portion in the groove portion. 螺旋状の複数の溝を平行に適宜間隔にて設け、それぞれの溝に導体を配置し線間の絶縁性能も有する構造とすることを特徴とする請求項1記載のエアケーブル。  The air cable according to claim 1, wherein a plurality of spiral grooves are provided in parallel at appropriate intervals, and a conductor is disposed in each of the grooves to have an insulation performance between lines. 棒状絶縁体の中心に直線状の導体を持つことを特徴とする請求項1又は2記載のエアケーブル。  The air cable according to claim 1 or 2, wherein a linear conductor is provided at the center of the rod-like insulator. 螺旋状の溝を絶縁体で覆い、さらにシースを被せ、中空部には乾燥空気を封入してなることを特徴とする請求項1、2又は3記載のエアケーブル。  4. The air cable according to claim 1, wherein the spiral groove is covered with an insulator, covered with a sheath, and the hollow portion is filled with dry air. 導体が裸導体であることを特徴とする請求項1、2、3又は4記載のエアケーブル。  The air cable according to claim 1, 2, 3, or 4, wherein the conductor is a bare conductor. 棒状絶縁体が屈曲性を有してなることを特徴とする請求項1、2、3、4又は5記載のエアケーブル。  6. The air cable according to claim 1, 2, 3, 4, or 5, wherein the rod-like insulator has flexibility. 螺旋状の導体と中心導体が適宜間隔で離隔していることを特徴とする請求項1、2、3、4、5又は6記載のエアケーブル。  The air cable according to claim 1, 2, 3, 4, 5 or 6, wherein the spiral conductor and the center conductor are separated at an appropriate interval.
JP2003396352A 2003-10-21 2003-10-21 Air cable Pending JP2005129473A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003396352A JP2005129473A (en) 2003-10-21 2003-10-21 Air cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003396352A JP2005129473A (en) 2003-10-21 2003-10-21 Air cable

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JP2005129473A true JP2005129473A (en) 2005-05-19

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JP2003396352A Pending JP2005129473A (en) 2003-10-21 2003-10-21 Air cable

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113362998A (en) * 2021-06-18 2021-09-07 江苏华能电缆股份有限公司 High-sealing smooth load-bearing detection cable for digital oil field

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113362998A (en) * 2021-06-18 2021-09-07 江苏华能电缆股份有限公司 High-sealing smooth load-bearing detection cable for digital oil field

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