JPS5844491Y2 - shielded cable - Google Patents
shielded cableInfo
- Publication number
- JPS5844491Y2 JPS5844491Y2 JP16043180U JP16043180U JPS5844491Y2 JP S5844491 Y2 JPS5844491 Y2 JP S5844491Y2 JP 16043180 U JP16043180 U JP 16043180U JP 16043180 U JP16043180 U JP 16043180U JP S5844491 Y2 JPS5844491 Y2 JP S5844491Y2
- Authority
- JP
- Japan
- Prior art keywords
- wire
- cable
- core
- conductive elastomer
- shielded cable
- 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.)
- Expired
Links
Landscapes
- Insulated Conductors (AREA)
Description
【考案の詳細な説明】 本考案は、遮蔽付ケーブルに関するものである。[Detailed explanation of the idea] The present invention relates to a shielded cable.
従来の遮蔽付ケーブルは第1図に示す如く導体1上に絶
縁体2を施してなる線心10を撚り合わせし、その上に
銅線編組4およびシース8を施した構造が一般的である
。A conventional shielded cable generally has a structure in which a wire core 10 consisting of a conductor 1 and an insulator 2 is twisted together, and a copper wire braid 4 and a sheath 8 are provided on top of the twisted wire core 10, as shown in Fig. 1. .
しかし、このような構造では、次のようにいくつかの欠
点、改善を要する点がある。However, such a structure has several drawbacks and points that require improvement as described below.
(1)例えば、ダム、港湾土木、施設等の歪を測定する
歪計用ケーブルとして使用される場合などに、このケー
ブルはコンクリート内、地中等に埋設して使用する場合
があるが、このような場合、従来のケーブル構造ではシ
ースの外傷あるいはシースをとおしてケーブル内部に入
った水が銅線編組または撚り合わせの介在物3を介して
長さ方向に走行し、やがて絶縁抵抗が低下し測定不能に
なる等の問題があった。(1) For example, when used as a strain meter cable to measure strain in dams, port civil engineering, facilities, etc., this cable may be buried in concrete, underground, etc. In such cases, in the conventional cable structure, damage to the sheath or water entering the cable through the sheath travels in the length direction through the copper wire braid or stranded inclusion 3, and the insulation resistance eventually decreases, making it difficult to measure. There were problems such as becoming disabled.
(2)小サイズケーブルに於いては、ケーブル延線時の
張力で導体が断線しやすい等の問題があった。(2) In small size cables, there were problems such as the conductor being easily broken due to the tension when the cable was stretched.
本考案の目的は、前記した従来技術の欠点を解消し、耐
水性、耐張力、電気特性に優れた新規な遮蔽付ケーブル
を提供することにある。An object of the present invention is to eliminate the drawbacks of the prior art described above and to provide a novel shielded cable with excellent water resistance, tensile strength, and electrical properties.
すなわち、本発明の要旨は、線心撚合体上に導電性エラ
ストマーを充実被覆せしめて、耐水性をよくし絶縁抵抗
の低下を防ぐと共に、高抗張力性補強繊維芯を中心にそ
の回りに導電素線を横巻きしてなるドレンワイヤを上記
導電性エラストマーの表面付近に直線状に縦添えせしめ
て耐張力性を大巾に向上させ、かつ電気的バランスを保
つように考えた構造にある。In other words, the gist of the present invention is to thoroughly cover the twisted wire cores with a conductive elastomer to improve water resistance and prevent a decrease in insulation resistance, and to provide conductive elements around the high tensile strength reinforcing fiber core. The structure is such that a drain wire made of horizontally wound wire is vertically attached in a straight line near the surface of the conductive elastomer to greatly improve the tensile strength and maintain electrical balance.
なお、上記に謂う高抗張力性補強繊維として具体的には
、たとえば芳香族系ポリアミド繊維が用いられる。Specifically, aromatic polyamide fibers are used as the above-mentioned high tensile strength reinforcing fibers.
また、導電素線としては、たとえば銅線(含む銅合金線
)あるいはアルミニウム線(含むアルミニウム合金線)
などが用いられる。In addition, as conductive wires, for example, copper wires (including copper alloy wires) or aluminum wires (including aluminum alloy wires)
etc. are used.
次に本考案の一実施例を添付図面に基づいて説明すると
、第2図に示すように、導体1上にゴム・プラスチック
絶縁体2を施してなる線心10を所要本数撚り合わせし
め、その周上に導電性エラストマー7を充実被覆せしめ
、さらに該導電性エラストマー7の表面付近に、抗張力
性補強繊維芯5を中心にその回りに導電素線6を横巻き
してなるドレンワイヤ9を直線状に縦添えせしめ、さら
にその周上にゴム・プラスチックシース8を施せしめて
なる。Next, an embodiment of the present invention will be explained based on the attached drawings. As shown in FIG. A conductive elastomer 7 is fully coated on the circumference, and a drain wire 9 formed by horizontally wrapping a conductive wire 6 around a tensile strength reinforcing fiber core 5 is placed near the surface of the conductive elastomer 7 in a straight line. The rubber/plastic sheath 8 is applied on the circumference of the rubber/plastic sheath 8.
この構造に於いて、導電性エラストマー7は、撚合体上
に充実被覆せしめられる共に、シース8に対して密着一
体化せしめられる。In this structure, the conductive elastomer 7 is fully coated on the twisted body and is closely integrated with the sheath 8.
このため、従来構造に比べ耐水性は著しく向上する。Therefore, water resistance is significantly improved compared to the conventional structure.
また、この導電性エラストマー7は全長に亙ってドレン
ワイヤ9と接触する構造となっているためケーブル端末
でドレンワイヤ9を接地する事によって、従来ケーブル
以上の非常に優れた遮蔽効果を得る事が出来る。Furthermore, since the conductive elastomer 7 is structured to be in contact with the drain wire 9 over its entire length, by grounding the drain wire 9 at the end of the cable, it is possible to obtain a much better shielding effect than with conventional cables. .
一方、このドレンワイヤ9は、導電性エラストマー7の
表面付近に配置して、人が手でケーブルをつかみ引張っ
た時把持されやすいようにし、張力を補強繊維芯5が負
担出来るようにしである。On the other hand, this drain wire 9 is arranged near the surface of the conductive elastomer 7 so that it can be easily grasped when a person grasps the cable by hand and pulls it, so that the tension can be borne by the reinforcing fiber core 5.
また、ドレンワイヤ9が線心10と一諸に撚り合わせら
れた場合には、ドレンワイヤ9と各線心10の幾何学的
配置は常に一定となり、電気的にアンバランスを生じる
事となる(即ち、この場合にはドレンワイヤと隣接する
線心においては十分なる遮蔽効果を期待できるものの、
ドレンワイヤから離れた線心においては遮蔽効果は必ず
しも十分とは言い難い時がある。In addition, when the drain wire 9 and the wire cores 10 are twisted together, the geometrical arrangement of the drain wire 9 and each wire core 10 is always constant, resulting in electrical imbalance (i.e., this In some cases, a sufficient shielding effect can be expected in the core adjacent to the drain wire, but
There are times when the shielding effect cannot be said to be sufficient for the wire core located far from the drain wire.
)が、本実施例のケーブルでは線心撚合体に対してドレ
ンワイヤを直線状に縦添えしてなるため、各線心はいず
れもドレンワイヤに対して適宜隣接することになり、従
って電気的にバランスのとれた構造となる。) However, in the cable of this example, the drain wire is vertically attached to the wire core twisted body in a straight line, so each wire core is appropriately adjacent to the drain wire, so that electrical balance is maintained. It becomes a solid structure.
なお、本考案ケーブルに於いて、絶縁体、導電性エラス
トマーおよびシースの材質はケーブルが使用される環境
、要求条件に最も適した材質のものを選定する事が出来
る。In the cable of the present invention, the materials for the insulator, conductive elastomer, and sheath can be selected to be the most suitable for the environment and requirements in which the cable is used.
例えば、石油備畜用施設の歪を測定する場合などケーブ
ルを油中で使用しなければならない場合などでは、耐油
性のよいニトリルゴムをベースにしたエラストマーを選
定する事によって、その目的を充分達成出成る。For example, in cases where the cable must be used in oil, such as when measuring strain in oil stockpiling facilities, selecting an elastomer based on nitrile rubber with good oil resistance can satisfactorily achieve the purpose. It will come out.
以上のように、本考案によれば、次のような顕著な効果
が得られる。As described above, according to the present invention, the following remarkable effects can be obtained.
(1)導電性エラストマーを充実に被覆し、すき間のな
い構造なので耐水性が極めてよい。(1) It is fully coated with conductive elastomer and has a structure with no gaps, so it has extremely good water resistance.
(2)高抗張力な補強繊維を有するドレンワイヤを用い
るため、耐張力にすぐれ布設時の張力に充分耐え得るケ
ーブルである。(2) Since a drain wire having high tensile strength reinforcing fibers is used, the cable has excellent tensile strength and can sufficiently withstand the tension during installation.
(3)ドレンワイヤは線心撚合体の外側に配置しである
ため、人手で容易に把持出来る。(3) Since the drain wire is arranged outside the wire core twisted body, it can be easily grasped by hand.
(4)ドレンワイヤは直線状に縦添えしであるため、電
気的バランスが保たれる。(4) Since the drain wire is arranged vertically in a straight line, electrical balance is maintained.
(5)銅線等の編組遮蔽に比べ、導電性エラストマー遮
蔽は弾性体であるため屈曲特性に優れている。(5) Compared to braided shields such as copper wire, conductive elastomer shields are elastic and have excellent bending properties.
第1図は、従来の遮蔽付ケーブルの断面図、第2図は、
本考案遮蔽付ケーブルの一実施例を示す断面図である。
1:導体、2:絶縁体、3:介在、4:銅線編組、5:
抗張力性補強繊維芯、6:導電素線、7:導電性エラス
トマー、8:シース、9:ドレンワイヤ、10:線心。Figure 1 is a cross-sectional view of a conventional shielded cable, and Figure 2 is a cross-sectional view of a conventional shielded cable.
FIG. 1 is a sectional view showing an embodiment of the shielded cable of the present invention. 1: Conductor, 2: Insulator, 3: Interposition, 4: Copper wire braid, 5:
Tensile reinforcing fiber core, 6: conductive wire, 7: conductive elastomer, 8: sheath, 9: drain wire, 10: wire core.
Claims (1)
に導電性エラストマーを充実被覆せしめ、さらにその周
上にシースを被覆せしめてなるものにおいて、上記導電
性エラストマーの充実被覆層の表面付近に、抗張力性補
強繊維芯を中心にその回りに導電素線を横巻きしてなる
ドレンワイヤを直線状に縦添えせしめてなることを特徴
とする遮蔽付ケーブル。A conductive elastomer is fully coated on the periphery of a wire core twisted body formed by twisting a plurality of insulated wire cores, and a sheath is further coated on the periphery, in which the conductive elastomer solid coating layer is A shielded cable characterized by having a drain wire, which is made of a tensile strength reinforcing fiber core and horizontally wound conductive wires wound horizontally around the core, attached vertically in a straight line near the surface of the cable.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16043180U JPS5844491Y2 (en) | 1980-11-10 | 1980-11-10 | shielded cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16043180U JPS5844491Y2 (en) | 1980-11-10 | 1980-11-10 | shielded cable |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5783614U JPS5783614U (en) | 1982-05-24 |
JPS5844491Y2 true JPS5844491Y2 (en) | 1983-10-08 |
Family
ID=29519417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16043180U Expired JPS5844491Y2 (en) | 1980-11-10 | 1980-11-10 | shielded cable |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5844491Y2 (en) |
-
1980
- 1980-11-10 JP JP16043180U patent/JPS5844491Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5783614U (en) | 1982-05-24 |
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