JPS6151714A - Extension preventing wavy sheathed cable - Google Patents
Extension preventing wavy sheathed cableInfo
- Publication number
- JPS6151714A JPS6151714A JP17222584A JP17222584A JPS6151714A JP S6151714 A JPS6151714 A JP S6151714A JP 17222584 A JP17222584 A JP 17222584A JP 17222584 A JP17222584 A JP 17222584A JP S6151714 A JPS6151714 A JP S6151714A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- metal tube
- corrugated
- sheathed cable
- corrugated metal
- 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
Links
Landscapes
- Insulated Conductors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は伸出防止形波付がい装ケーブルに関する。[Detailed description of the invention] [Industrial application field] The present invention relates to an anti-extension corrugated armored cable.
電線ケーブルの機械的強度を向上させる目的で金属かい
装が用いられているが、このかい装が平清な金属管であ
る場合にはケーブルの可撓性がそこなわれるため、一般
に平滑金属管に波付加工を施してなる波付金属管を用い
てかい装となしいる。Metal sheathing is used to improve the mechanical strength of electric wire cables, but if the sheath is a plain metal tube, the flexibility of the cable will be impaired, so it is generally used as a smooth metal tube. The shell is made of a corrugated metal tube that has been processed with corrugations.
このように平滑な金属管に波付加工を施こすことにより
波付金属管とした場合には可撓性が向上する他に横方向
の圧縮強度も向上させることが出来るが、長さ方向の引
張強度が低下しケーブルの引入れ時に金属かい襞部分の
みが伸出してしまうことがあり不都合である。In this way, by applying corrugation to a smooth metal tube, it is possible to improve the flexibility and compressive strength in the lateral direction when making a corrugated metal tube. This is disadvantageous because the tensile strength decreases and only the metal paddle portion extends when the cable is pulled in.
本発明の目的は上記問題を解決し、波付金属管かい装の
有する長手方向の引張強度を補ったケーブルを提供する
ことである。SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and provide a cable that compensates for the longitudinal tensile strength of the corrugated metal tube sheathing.
本発明によれば絶縁層を有する導体上の波付金属かい装
上にケーブルの長手方向に収縮する残留応力を有する防
食層を設ける。According to the present invention, a corrosion protection layer having a residual stress that contracts in the longitudinal direction of the cable is provided on a corrugated metal sheathing on a conductor having an insulating layer.
このようにケーブルの長手方向に収縮するような残留応
力を有する防食層を設けることにより、ケーブルの長手
方向に引張力を加えた場合の金属かい装の伸出しが防食
層による収縮力により相殺される。By providing an anti-corrosion layer with residual stress that causes it to contract in the longitudinal direction of the cable, the elongation of the metal sheath when a tensile force is applied in the longitudinal direction of the cable is offset by the contraction force of the anti-corrosion layer. Ru.
図は本発明の一実施例の断面図である。 The figure is a sectional view of one embodiment of the present invention.
図において夫々導体１を絶縁体２で被覆してなる３本の
線心を撚り合せ、任意の介在物３でそれらの周囲の空間
に充填し、その外周に押え巻テープ４を巻き付け、更に
その外周に内部シース５を設けてケーブルを形成する。In the figure, three wire cores each made of a conductor 1 covered with an insulator 2 are twisted together, the space around them is filled with an arbitrary inclusion 3, a pressure tape 4 is wrapped around the outer periphery, and the An inner sheath 5 is provided around the outer periphery to form a cable.
このケーブル上に波付金属管かい装６を設けその上に防
食層７を設けている。A corrugated metal tube sheath 6 is provided on this cable, and an anti-corrosion layer 7 is provided thereon.
防食層７は例えば体積膨張率の大きい適当な材料を用い
て押出し成形により形成することが出来その押出時に引
落量を大きくして長手方向の収縮残留応力を与えるよう
にしてもよい。The anti-corrosion layer 7 can be formed by extrusion using, for example, a suitable material with a large coefficient of volumetric expansion, and the amount of drawdown may be increased during extrusion to provide shrinkage residual stress in the longitudinal direction.
また、この防食層を半チューブ押出あるいはチューブ押
出により波のすきまに充填させるようにして形成しても
よい。Alternatively, the anticorrosive layer may be formed by half-tube extrusion or tube extrusion to fill the gaps between waves.
本発明によれば波形がい装の長手方向の伸出しが防止さ
れ、従来ケーブル布設時に端末部において行われている
導体とかい装の機械的固定作業が不要となりケーブル取
扱い上極めて有利であると共に防食作用も有する。According to the present invention, extension of the corrugated sheath in the longitudinal direction is prevented, and the mechanical fixing work of the conductor and sheath, which is conventionally performed at the terminal part when laying the cable, becomes unnecessary, which is extremely advantageous in handling the cable, and also prevents corrosion. It also has an effect.
図は本発明の一実施例の断面図である。
１・・・導体、２・・・絶縁体、３・・・介在、４・・
・押え巻テープ、５・・・内部シース、６・・・波付金
属かい装、肛
坏
／＋ （４４本）
／２（ＪＦ！！ｊｉ体）
ど３（全左）
、６ （浪イ寸奎為がｔ＋Ｅ艮）
−７（Ｍ会層〕The figure is a sectional view of one embodiment of the present invention. 1...Conductor, 2...Insulator, 3...Intervening, 4...
・Pressure winding tape, 5...inner sheath, 6...corrugated metal sheath, anus/+ (44 pieces) /2 (JF!!ji body) Do3 (all left), 6 (Namii) -7 (M group)
Claims (1)
順序で設け、更に上記波付金属管保護層上に、ケーブル
長手方向に収縮する内部残留応力を有する防食層を押出
被覆により設けて成る伸出防止形波付がい装ケーブル。 ２ 前記絶縁層と前記波付金属管保護層との間に内部シ
ースを更に有することを特徴とする特許請求の範囲第１
項記載の伸出防止形波付がい装ケーブル。[Scope of Claims] 1. A conductor having an insulating layer and a corrugated metal tube protective layer are provided in that order, and an anticorrosion layer having internal residual stress that contracts in the longitudinal direction of the cable is further provided on the corrugated metal tube protective layer. An anti-extension corrugated armored cable made of extruded coating. 2. Claim 1 further comprising an inner sheath between the insulating layer and the corrugated metal tube protective layer.
Stretch-prevention corrugated armored cable as described in Section 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17222584A JPS6151714A (en) | 1984-08-18 | 1984-08-18 | Extension preventing wavy sheathed cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17222584A JPS6151714A (en) | 1984-08-18 | 1984-08-18 | Extension preventing wavy sheathed cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6151714A true JPS6151714A (en) | 1986-03-14 |
Family
ID=15937915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17222584A Pending JPS6151714A (en) | 1984-08-18 | 1984-08-18 | Extension preventing wavy sheathed cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6151714A (en) |
-
1984
- 1984-08-18 JP JP17222584A patent/JPS6151714A/en active Pending
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