JPH0648679Y2 - Self-supporting cable - Google Patents
Self-supporting cableInfo
- Publication number
- JPH0648679Y2 JPH0648679Y2 JP2781489U JP2781489U JPH0648679Y2 JP H0648679 Y2 JPH0648679 Y2 JP H0648679Y2 JP 2781489 U JP2781489 U JP 2781489U JP 2781489 U JP2781489 U JP 2781489U JP H0648679 Y2 JPH0648679 Y2 JP H0648679Y2
- Authority
- JP
- Japan
- Prior art keywords
- cable
- axis
- self
- bending
- drum
- 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 - Lifetime
Links
- 238000005452 bending Methods 0.000 description 7
- 238000004804 winding Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Description
【考案の詳細な説明】 [産業上の利用分野] この考案は、自己支持型ケーブルに関するもので、特に
ケーブル部内のテンションメンバの配置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a self-supporting cable, and more particularly to the arrangement of tension members in a cable section.
[従来の技術] 第2図に自己支持型ケーブルの一例を示す。[Prior Art] FIG. 2 shows an example of a self-supporting cable.
10はケーブルの全体で、ケーブル部20と支持線30とから
なる。Reference numeral 10 denotes the entire cable, which includes a cable portion 20 and a supporting wire 30.
ケーブル部20は;スロット22内に複数本(たとえば2
本)のテンションメンバ24a,24bを互いに平行にかつ離
して埋設し、スロット溝内に光フアイバ26、通信線28を
収容したものである。The cable portion 20 is a plurality of cables (for example, 2 in the slot 22).
The tension members 24a and 24b of the present invention are embedded in parallel with each other and separated from each other, and the optical fiber 26 and the communication line 28 are accommodated in the slot groove.
また支持線30は;テンションメンバ32を有し、ケーブル
部20の外側にケーブル部20から離れて配置され、かつ共
通のシース34を施されている。Further, the support wire 30 has a tension member 32, is arranged outside the cable portion 20 apart from the cable portion 20, and is provided with a common sheath 34.
なお、以下の説明の都合上、ケーブル部20と支持線30の
中心を通る線をY軸、ケーブル部20の中心を通りかつY
軸に直角な線をX軸ということにする。For convenience of description below, a line passing through the centers of the cable portion 20 and the support wire 30 is the Y axis, and passes through the center of the cable portion 20 and is Y.
The line perpendicular to the axis is called the X axis.
[考案が解決しようとする課題] 第3図に、上記のケーブル10をドラム40に巻きつけた場
合を模型的に示した。[Problems to be Solved by the Invention] FIG. 3 schematically shows a case in which the cable 10 is wound around the drum 40.
42は巻胴、44は側板である。42 is a winding drum, and 44 is a side plate.
またケーブル10の巻きつけ(曲げ)の中心軸を46で示し
た(この曲げの中心軸46はドラム40の中心軸と一致す
る)。The central axis of winding (bending) of the cable 10 is indicated by 46 (the central axis 46 of this bending coincides with the central axis of the drum 40).
この種のケーブルは、上記のようにX軸方向の幅よりも
Y軸方向の幅(高さ)の方が大きい。そのため、ドラム
40に巻くとき、第3図のように、Y軸と曲げの中心軸46
とが平行になる。As described above, this type of cable has a larger width (height) in the Y-axis direction than in the X-axis direction. Therefore, the drum
When wound around 40, as shown in Fig. 3, Y axis and bending center axis 46
And become parallel.
この状態が、ケーブル10として曲がり易くかつ安定する
からである。This is because the cable 10 is easily bent and stable in this state.
しかし、ケーブル10がこのような状態で巻かれると、次
の点が問題となる。However, when the cable 10 is wound in such a state, the following points become a problem.
(1) 曲げの中立面はY軸を通るので、その内側のテ
ンションメンバ24aが縮む方向に力を受る。(1) Since the neutral surface of the bending passes through the Y axis, the tension member 24a inside the bending surface receives a force in a contracting direction.
そのため、テンションメンバ24aがスロット22の外に突
出して、ケーブル破壊を起すことがある。Therefore, the tension member 24a may protrude to the outside of the slot 22 and cause cable breakage.
(2) ドラム40に巻くとき、テンションメンバ24a,b
に加わる圧縮および引張りの力を開放しようとして、ケ
ーブル10が矢印48の方向に回転して、ねじれを生ずる。(2) When wound on the drum 40, tension members 24a, 24b
The cable 10 rotates in the direction of arrow 48 in an attempt to release the compressive and tensile forces on it, causing a twist.
この考案は、上記のような問題の無い、曲げ特性のよい
自己支持型ケーブルの提供を目的とするものである。The object of the present invention is to provide a self-supporting cable having good bending characteristics and free from the above problems.
[課題を解決するための手段] 第1図のように、 たとえば2本のテンションメンバ24,24bを、ケーブル部
20と支持線30の中心を通るY軸上に配置すること、 を特徴とする。[Means for Solving the Problem] As shown in FIG. 1, for example, two tension members 24 and 24b are connected to the cable section.
It is arranged on the Y-axis passing through the centers of 20 and the support line 30.
[その説明] 従来の第2図の場合と比べてみれば分るように、断面図
で見るとき、支持線30はそのままにしておいて、ケーブ
ル部20だけを90度回転させたものである。[Explanation] As can be seen from comparison with the conventional case of FIG. 2, when viewed in a sectional view, the supporting wire 30 is left as it is and only the cable portion 20 is rotated by 90 degrees. .
それ以外の部分は、従来と変らない。Other parts are the same as before.
[考案の作用効果] ドラム40に巻つける場合などのように、ケーブル10を曲
げる時、上記のように、曲げの中心軸46とY軸が平行に
なる。[Advantageous effects of the invention] When the cable 10 is bent such as when it is wound around the drum 40, the bending center axis 46 and the Y axis are parallel to each other as described above.
しかし本考案の場合は上記のように、たとえば2本のテ
ンションメンバ24a,24bはY軸上に配置してあるので、
曲げの中心軸46から等距離にあり、かつケーブル10の曲
がりの中立面上にある。However, in the case of the present invention, as described above, for example, since the two tension members 24a and 24b are arranged on the Y axis,
It is equidistant from the center axis of bending 46 and on the neutral plane of the bend of the cable 10.
そのため、テンションメンバ24a,24bに圧縮や引張りの
力は加わらない。Therefore, no compression or tension force is applied to the tension members 24a and 24b.
したがって、曲げたとき、テンションメンバがスロット
から突出したり、ケーブルがねじれたりするということ
が無くなる。Therefore, when bent, the tension member does not project from the slot and the cable is not twisted.
第1図はこの考案の実施例の説明図、 第2図は従来技術の説明図、 第3図は従来のケーブルをドラムに巻いた状態の模式
図。 10:ケーブル、20:ケーブル部 22:スロット 24a,24b:テンションメンバ 26:光フアイバ、28:通信線 30:支持線、32:テンションメンバ 34:シース、40:ドラム 42:巻胴、44:側板 46:曲げの中心軸、48:矢印FIG. 1 is an explanatory view of an embodiment of the present invention, FIG. 2 is an explanatory view of a conventional technique, and FIG. 3 is a schematic view of a conventional cable wound on a drum. 10: Cable, 20: Cable part 22: Slot 24a, 24b: Tension member 26: Optical fiber, 28: Communication line 30: Support line, 32: Tension member 34: Sheath, 40: Drum 42: Winding drum, 44: Side plate 46: central axis of bending, 48: arrow
Claims (1)
して支持線を配置しかつ共通のシースを施すとともに、
前記ケーブル部にも複数本のテンションメンバを互いに
平行にかつ離して設けた自己支持型ケーブルにおいて、 前記テンションメンバを、前記ケーブル部と支持線の中
心を通るY軸上に配置した、自己支持型ケーブル。1. A support wire is arranged outside the cable portion away from the cable portion and a common sheath is provided, and
A self-supporting cable in which a plurality of tension members are provided in the cable portion in parallel with each other and at a distance from each other. cable.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2781489U JPH0648679Y2 (en) | 1989-03-11 | 1989-03-11 | Self-supporting cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2781489U JPH0648679Y2 (en) | 1989-03-11 | 1989-03-11 | Self-supporting cable |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02119314U JPH02119314U (en) | 1990-09-26 |
JPH0648679Y2 true JPH0648679Y2 (en) | 1994-12-12 |
Family
ID=31250639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2781489U Expired - Lifetime JPH0648679Y2 (en) | 1989-03-11 | 1989-03-11 | Self-supporting cable |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0648679Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013065625A1 (en) * | 2011-11-04 | 2013-05-10 | 株式会社フジクラ | Self-supporting optical fiber cable and mid-span access method |
-
1989
- 1989-03-11 JP JP2781489U patent/JPH0648679Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH02119314U (en) | 1990-09-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |