JP4975960B2 - Optical cable - Google Patents

Optical cable Download PDF

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JP4975960B2
JP4975960B2 JP2004355170A JP2004355170A JP4975960B2 JP 4975960 B2 JP4975960 B2 JP 4975960B2 JP 2004355170 A JP2004355170 A JP 2004355170A JP 2004355170 A JP2004355170 A JP 2004355170A JP 4975960 B2 JP4975960 B2 JP 4975960B2
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optical
cord
optical cable
sheath
present
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JP2006099032A (en
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源 田村
圭寿 岡部
匡広 坂本
真 赤坂
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SEI Optifrontier Co Ltd
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SEI Optifrontier Co Ltd
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本発明は床面や壁面にステップルを用いて配線することができる光ケーブルに 関する。   The present invention relates to an optical cable that can be wired on a floor surface or wall surface using a staple.

従来の光ケーブルはテンションメンバーの両側部に光コードを並列させ、これらの外周部をトラック状となるようにシースで覆っている。   In the conventional optical cable, optical cords are arranged in parallel on both sides of the tension member, and the outer peripheral portion thereof is covered with a sheath so as to form a track shape.

このため、床面や壁面にステップルを用いて配線しようとすると、ステップルが光コードに圧力を加えて、光コードの光ファイバ心線に悪影響をおよぼすため、このような使用はできないという欠点があった。
特開平９−２４３８８３ For this reason, if you attempt to wire the floor or wall using a staple, the staple will apply pressure to the optical cord and adversely affect the optical fiber core of the optical cord. It was.
Japanese Patent Laid-Open No. 9-243883

本発明は以上のような従来の欠点に鑑み、ステップルを用いて配線しても光コードの光ファイバ心線に外圧が加わるのを効率よく阻止することができ、ステップル配線が可能な光ケーブルを提供することを目的としている。   The present invention provides an optical cable capable of efficiently preventing external pressure from being applied to the optical fiber core of the optical cord even if wiring is performed using a staple, in view of the above-described conventional drawbacks. The purpose is to do.

本発明の前記ならびにそのほかの目的と新規な特徴は次の説明を添付図面と照らし合わせて読むと、より完全に明らかになるであろう。
ただし、図面はもっぱら解説のためのものであって、本発明の技術的範囲を限定するものではない。 The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are for explanation only and do not limit the technical scope of the present invention.

上記目的を達成するために、本発明は少なくとも1本以上の光コードと、この少なくとも1本以上の光コードの両側部に並列するように配置されたテンションメンバーと、このテンションメンバーと前記少なくとも1本以上の光コードの外周部を、該少なくとも1本以上の光コードの位置する上下部位の両方あるいは一方が凹部状となるように覆うシースとからなり、前記シースは軸に垂直な断面が長方形状に形成され、前記凹部は軸に垂直な断面が台形状に形成され、前記光コードが光ファイバ心線と、この光ファイバ心線の外周部を覆う抗張力繊維層と、この抗張力繊維層の外周部を覆う被覆層とで構成され、前記テンションメンバーがステップルに対するケーブルとしての剛性を持たせるために直径が０．６ｍｍ以上の抗張力体と、この抗張力体の外周部を覆う被覆層とで構成され、前記光コードの径が前記抗張力体の径よりも大きくして光ケーブルを構成している。 To achieve the above object, the present invention provides at least one or more optical cords, a tension member arranged in parallel on both sides of the at least one optical cord, the tension member and the at least one optical cord. A sheath that covers the outer periphery of at least one optical cord so that at least one or both of the upper and lower portions where the at least one optical cord is positioned are recessed, and the sheath has a rectangular cross section perpendicular to the axis The concave portion has a trapezoidal cross section perpendicular to the axis, the optical cord includes an optical fiber core, a tensile fiber layer covering the outer periphery of the optical fiber core, and the tensile fiber layer. A tension layer having a diameter of 0.6 mm or more in order to provide the tension member with rigidity as a cable with respect to the staple. An optical cable is configured with a coating layer covering the outer periphery of the force body, and the diameter of the optical cord is larger than the diameter of the strength member.

以下の説明から明らかなように、本発明にあっては次に列挙する効果が得られる。   As will be apparent from the following description, the present invention has the following effects.

（１）少なくとも1本以上の光コードと、この少なくとも1本以上の光コードの両側部に並列するように配置されたテンションメンバーと、このテンションメンバーと前記少なくとも1本以上の光コードの外周部を、該少なくとも1本以上の光コードの位置する上下部位の両方あるいは一方が凹部状となるように覆うシースとからなり、前記シースは軸に垂直な断面が長方形状に形成され、前記凹部は軸に垂直な断面が台形状に形成され、前記光コードが光ファイバ心線と、この光ファイバ心線の外周部を覆う抗張力繊維層と、この抗張力繊維層の外周部を覆う被覆層とで構成され、前記テンションメンバーがステップルに対するケーブルとしての剛性を持たせるために直径が０．６ｍｍ以上の抗張力体と、この抗張力体の外周部を覆う被覆層とで構成され、前記光コードの径が前記抗張力体の径よりも大きくしているので、金属製あるいは合成樹脂材でカバーしたステップルで配線しても、ステップルからの圧力を両側部のテンションメンバーの外周部のシースで受けるとともに、少なくとも１本以上の光コードの上下部位の両方あるいは一方の凹部状部位が逃がしの役目をして、光コードの光ファイバ心線に悪影響をおよぼす圧力が加わるのを防止することができる。
したがって、ステップル配線を行なうことができる。 (1) At least one or more optical cords, a tension member arranged in parallel to both sides of the at least one or more optical cords, and an outer peripheral portion of the tension member and the at least one or more optical cords A sheath that covers both or one of the upper and lower portions where the at least one optical cord is positioned so that a concave portion is formed, and the sheath is formed in a rectangular shape in a cross section perpendicular to the axis, A cross section perpendicular to the axis is formed in a trapezoidal shape, and the optical cord includes an optical fiber core, a tensile fiber layer covering the outer periphery of the optical fiber core, and a covering layer covering the outer periphery of the tensile fiber layer. A tension member having a diameter of 0.6 mm or more and a covering layer covering an outer peripheral portion of the tension member so that the tension member has rigidity as a cable for the staple. Since the diameter of the optical cord is larger than the diameter of the strength member, the pressure from the staples can be applied to the outer periphery of the tension members on both sides even if wiring is performed with a metal or synthetic resin covered staple. In addition to being received by the sheath of the part, at least one or more of the upper and lower portions of the optical cord or one of the concave portions serves as a relief to prevent pressure from exerting an adverse effect on the optical fiber core of the optical cord can do.
Therefore, it is possible to carry out the staple wiring.

（２）前記（１）によって、シースの上部が凹部状で配線すれば、ステップルの打ち込みでステップルの中央部が窪んでも、該ステップルの中央部の窪みをシースの上部の凹部状部位で吸収できる。
したがって、従来と同様なステップルの打ち込み操作で配線を行なうことができる。 (2) According to the above (1), if the upper part of the sheath is wired in a concave shape, even if the central part of the staple is depressed by driving the staple, the concave part in the central part of the staple can be absorbed by the concave part of the upper part of the sheath. .
Therefore, wiring can be performed by the same stapling operation as in the prior art.

（３）前記（１）によって、少なくとも１本以上の光コードの位置する上下部位の両方あるいは一方が凹部状となるようにシースを形成するだけでよいので、構造が簡単で、容易に実施することができる。 (3) According to the above (1), it is only necessary to form the sheath so that at least one or both of the upper and lower parts where one or more optical cords are positioned have a concave shape. be able to.

（４）前記（１）によって、光コードの外径寸法よりも大きいテンションメンバーを用いることにより、より光コードの光ファイバ心線に外部圧力が加わるのを効率よく阻止することができる。 (4) By using the tension member larger than the outer diameter size of the optical cord according to (1), it is possible to efficiently prevent external pressure from being applied to the optical fiber core of the optical cord.

以下、図面に示す本発明を実施するための最良の形態により、本発明を詳細に説明する。   Hereinafter, the present invention will be described in detail with reference to the best mode for carrying out the invention shown in the drawings.

図１ないし図４に示す本発明を実施するための最良の第１の形態において、１はステップル配線が可能な本発明の光ケーブルで、この光ケーブル１は少なくとも１本以上、本発明を実施するための形態では１本の光コード２と、この光コード２の両側部に並列するように配置されたテンションメンバー３、３と、このテンションメンバー３、３と前記光コード２の外周部を、該光コード２の位置する上下部位の両方が凹部４、４状となるように覆うシース５とで構成されている。   In the best mode for carrying out the present invention shown in FIGS. 1 to 4, reference numeral 1 denotes an optical cable of the present invention capable of stepping wiring, and at least one optical cable 1 is used for carrying out the present invention. In this embodiment, one optical cord 2, tension members 3, 3 arranged so as to be parallel to both sides of the optical cord 2, and the outer peripheral portions of the tension members 3, 3 and the optical cord 2, The upper and lower portions where the optical cord 2 is located are configured by a sheath 5 that covers the recesses 4 and 4 so as to form a shape.

前記光コード２は光ファイバ心線６と、この光ファイバ心線６の外周部を覆う抗張力繊維層７と、この抗張力繊維層７の外周部を覆う被覆層８とで構成されている。
なお、本発明を実施するための形態では光コード２として光ファイバ心線６そのもの、またはその外周部を一層以上の被覆層で覆ったものを使用しても良い。 The optical cord 2 includes an optical fiber 6, a tensile fiber layer 7 that covers the outer periphery of the optical fiber 6, and a coating layer 8 that covers the outer periphery of the tensile fiber layer 7.
In the embodiment for carrying out the present invention, the optical cord 2 may be the optical fiber core 6 itself, or the outer periphery thereof covered with one or more coating layers.

前記テンションメンバー３、３は前記光コード２の外径寸法とほぼ同じ外径寸法となるように形成されたもので、鋼線やＦＲＰ等の抗張力体９と、この抗張力体９の外周部を覆う被覆層１０とで構成されている。
なお、前記テンションメンバー３、３の抗張力体９、９の直径寸法はステップルに対するケーブルとしての剛性を持たせるために０．６ｍｍ以上のものを使用
すると良い。 The tension members 3 and 3 are formed so as to have substantially the same outer diameter as that of the optical cord 2. A tensile body 9 such as a steel wire or FRP and an outer peripheral portion of the tensile body 9 are provided. It is comprised with the coating layer 10 to cover.
The diameter members 9 and 9 of the tension members 3 and 3 may have a diameter of 0.6 mm or more in order to provide rigidity as a cable with respect to the staple.

前記シース５は難燃ＰＥ等で長方形状に形成され、光コード２の位置する上下部位には台形状の凹部４、４が形成されるとともに、両端部のほぼ中央部には切り裂き用のＶ字状の切り欠部１１、１１が形成されている。   The sheath 5 is formed of a flame-retardant PE or the like in a rectangular shape, and trapezoidal concave portions 4 and 4 are formed in the upper and lower portions where the optical cord 2 is located. Character-shaped notches 11 and 11 are formed.

上記構成の光ケーブル１は図３に示すようにステップル１２で配線されても、図４に示すようにシース５にステップル１２の押し圧力が加わっても、テンションメンバー３、３の抗張力体９、９およびシース５の光コード２の位置している上下部位の凹部４、４部位へ圧力を逃がし、光コード２の光ファイバ心線６に圧力が加わるのを防止することができる。
また、ステップル１２の中央部がステップル打ち込み機によって光ケーブル１方向へ撓んでも、該撓み部がシース５の凹部４内に入り込むため、光コード２の光ファイバ心線６に圧力が加わったりするのを確実に阻止することができる。
［発明を実施するための異なる形態］ Even if the optical cable 1 having the above configuration is wired with the staple 12 as shown in FIG. 3 or the pressing force of the staple 12 is applied to the sheath 5 as shown in FIG. 4, the tensile members 9 and 9 of the tension members 3 and 3 are used. In addition, pressure can be released to the upper and lower concave portions 4 and 4 of the sheath 5 where the optical cord 2 is positioned, and pressure can be prevented from being applied to the optical fiber core 6 of the optical cord 2.
Even if the central portion of the staple 12 is bent in the direction of the optical cable 1 by the staple driving machine, the bent portion enters the concave portion 4 of the sheath 5, so that pressure is applied to the optical fiber core wire 6 of the optical cord 2. Can be reliably prevented.
[Different forms for carrying out the invention]

次に、図５ないし図３０に示す本発明を実施するための異なる形態および本発明者が考えた光ケーブルにつき説明する。なお、これらの本発明を実施するための異なる形態および本発明者が考えた光ケーブルの説明に当って、前記本発明を実施するための最良の第１の形態と同一構成部分には同一符号を付して重複する説明を省略する。   Next, different modes for carrying out the present invention shown in FIGS. 5 to 30 and optical cables considered by the present inventor will be described. In the description of these different forms for carrying out the present invention and the optical cable considered by the present inventor, the same components as those in the first preferred embodiment for carrying out the present invention are denoted by the same reference numerals. A duplicate description will be omitted.

図５および図６に示す本発明者が考えた光ケーブルの形態において、前記本発明を実施するための最良の第１の形態と主に異なる点は、両側部が円弧形状となるシース５Ａにした点で、このような形状のシース５Ａを用いた光ケーブル１Ａにしても良い。   5 and 6, the optical cable configuration considered by the present inventor is mainly different from the first embodiment for carrying out the present invention in that the sheath 5A has arcuate sides. In this regard, the optical cable 1A using the sheath 5A having such a shape may be used.

図７および図８に示す本発明者が考えた光ケーブルの形態において、前記本発明を実施するための最良の第１の形態と主に異なる点は、光コード２の外径寸法よりも大きな外径寸法のテンションメンバー３Ａ、３Ａを用いた点で、このようなテンションメンバー３Ａ、３Ａを用いて構成した光ケーブル１Ｂにしても良い。   7 and 8, the optical cable configuration considered by the present inventor is mainly different from the first preferred embodiment for carrying out the present invention in that an outer diameter larger than the outer diameter size of the optical cord 2 is used. An optical cable 1B configured using such tension members 3A and 3A may be used in that the diameter-sized tension members 3A and 3A are used.

図９および図１０に示す本発明を実施するための第２の形態において、前記本発明を実施するための最良の第１の形態と主に異なる点は、２本の光コード２、２を並列させた点で、このように構成した光ケーブル１Ｃにしても、前記本発明を実施するための最良の第１の形態と同様な作用効果が得られる。   The second embodiment for carrying out the present invention shown in FIGS. 9 and 10 is mainly different from the best first embodiment for carrying out the present invention in that two optical cords 2 and 2 are used. Even in the optical cable 1 </ b> C configured in this way, the same effect as that of the best first embodiment for carrying out the present invention can be obtained in the point of being arranged in parallel.

図１１および図１２に示す本発明者が考えた光ケーブルの形態において、前記本発明を実施するための最良の第１の形態と主に異なる点は、３本の光コード２、２、２を並列させた点で、このように構成した光ケーブル１Ｄにしてもよい。   11 and 12, the optical cable form considered by the present inventor is mainly different from the first preferred embodiment for carrying out the present invention in that three optical cords 2, 2, 2 are connected. The optical cable 1 </ b> D configured in this way may be used in terms of being arranged in parallel.

図１３および図１４に示す本発明者が考えた光ケーブルの形態において、前記本発明を実施するための最良の第１の形態と主に異なる点は、４本の光コード２、２、２、２を並列させた点で、このように構成した光ケーブル１Ｅにしても良い。   13 and 14, the optical cable considered by the present inventor is mainly different from the first preferred embodiment for carrying out the present invention in that four optical cords 2, 2, 2, The optical cable 1E configured as described above may be used in that the two are arranged in parallel.

図１５および図１６に示す本発明者が考えた光ケーブルの形態において、前記本発明を実施するための最良の第１の形態と主に異なる点は、６本の光コード２、２、２、２、２、２の中央部と両側部にテンションメンバー３、３、３が位置するように並列させ、３本並列された光コード２、２、２および２、２、２の上下部位に凹部４、４および４、４が位置するシース５Ｂで覆った点で、このように構成した光ケーブル１Ｆにしても良い。   15 and FIG. 16, the optical cable considered by the present inventor mainly differs from the first preferred embodiment for carrying out the present invention in that six optical cords 2, 2, 2, The tension members 3, 3, 3 are juxtaposed so that the tension members 3, 3, 3 are positioned at the center and both sides of the two, 2, 2, and the concave portions are formed in the upper and lower parts of the three optical cords 2, 2, 2 The optical cable 1 </ b> F configured in this way may be used in that it is covered with the sheath 5 </ b> B in which 4, 4 and 4, 4 are located.

図１７および図１８に示す本発明者が考えた光ケーブルの形態において、前記本発明を実施するための最良の第１の形態と主に異なる点は、光コード２の外径寸法とテンションメンバー３Ｂ、３Ｂの外径寸法がほぼ同一で、かつ光コード２の光ファイバ心線６の直径とテンションメンバー３Ｂ、３Ｂの抗張力体９Ａの直径とをほぼ同じ寸法にしたものを用いた点で、このように構成した光ケーブル１Ｇにしてもよい。   17 and 18, the optical cable form considered by the inventor is mainly different from the first preferred embodiment for carrying out the present invention in that the outer diameter dimension of the optical cord 2 and the tension member 3 </ b> B are different. 3B, the outer diameter of the optical cord 2 is substantially the same, and the diameter of the optical fiber core 6 of the optical cord 2 and the diameter of the tensile member 9A of the tension members 3B, 3B are substantially the same. The optical cable 1G configured as described above may be used.

図１９および図２０に示す本発明者が考えた光ケーブルの形態において、前記本発明を実施するための最良の第１の形態と主に異なる点は、上面にだけ凹部４を形成したシース５Ｃを用いた点で、このように凹部４を形成したシース５Ｃを用いて構成した光ケーブル１Ｈは、配線時に凹部４を上面に位置させればよい。   19 and 20, the optical cable configuration considered by the present inventor is mainly different from the first preferred embodiment for carrying out the present invention in that a sheath 5 </ b> C having a recess 4 only on the upper surface is provided. The optical cable 1H configured by using the sheath 5C in which the recesses 4 are formed in this way is only required to position the recesses 4 on the upper surface during wiring.

図２１および図２２に示す本発明者が考えた光ケーブルの形態において、前記本発明を実施するための最良の第１の形態と主に異なる点は、光コード２の両側部に隙間を介して並列するようにテンションメンバー３、３を配置するとともに、このテンションメンバー３、３と光コード２の外周部を覆うシース５Ｄを光コード２の両側部とテンションメンバー３、３との間に圧力吸収隙間１３、１３を有するように設けた点で、このように構成された光ケーブル１Ｉにしてもよい。
シース５Ｄの圧力吸収隙間１３、１３によって、ステップル１２の押し圧力が光コード２の光ファイバ心線６に加わるのを効率良く阻止することができる。 21 and FIG. 22 is different from the first preferred embodiment for carrying out the present invention in the form of the optical cable considered by the present inventor as shown in FIG. 21 and FIG. The tension members 3 and 3 are arranged in parallel, and a sheath 5D that covers the tension members 3 and 3 and the outer periphery of the optical cord 2 absorbs pressure between both side portions of the optical cord 2 and the tension members 3 and 3. The optical cable 1I configured in this way may be used in that the gaps 13 and 13 are provided.
The pressure absorbing gaps 13 and 13 of the sheath 5D can efficiently prevent the pressing force of the staple 12 from being applied to the optical fiber core 6 of the optical cord 2.

図２３および図２４に示す本発明者が考えた光ケーブルの形態において、前記図２１および図２２に示す形態と主に異なる点は、光コード２の移動を阻止できるように圧力吸収隙間１３、１３の上下部に弧状の突起部５ａ、５ａ、５ａ、５ａ、を形成したシース５Ｅを用いた点で、このように構成された光ケーブル１Ｊにしてもよく、シース５Ｅ内での光コード２の移動を効率良く防止することができる。   23 and FIG. 24, the optical cable configuration considered by the present inventor is mainly different from the configuration shown in FIG. 21 and FIG. 22 in that the pressure absorbing gaps 13 and 13 can prevent the optical cord 2 from moving. The optical cable 1J configured as described above may be used in that the sheath 5E having the arc-shaped protrusions 5a, 5a, 5a, and 5a formed on the upper and lower portions may be used. Can be efficiently prevented.

図２５および図２６に示す本発明者が考えた光ケーブルの形態において、前記図２１および図２２に示す形態と主に異なる点は、シース５Ｄの圧力吸収隙間１３、１３に発泡樹脂等のクッション材１４、１４を充填した点で、このように構成された光ケーブル１Ｋにしてもよく、シース５Ｄ内での光コード２の移動を効率良く防止することができる。   25 and FIG. 26, the optical cable form considered by the present inventor is mainly different from the form shown in FIG. 21 and FIG. 22 in that the pressure absorbing gaps 13 and 13 of the sheath 5D have cushioning materials such as foamed resin. The optical cable 1K configured as described above may be used in that the 14 and 14 are filled, and the movement of the optical cord 2 in the sheath 5D can be efficiently prevented.

図２７および図２８に示す本発明者が考えた光ケーブルの形態において、前記本発明を実施するための最良の第１の形態と主に異なる点は、テンションメンバー３、３間に光ファイバテープ心線を光コード２Ａとして用いた点で、このように構成された光ケーブル１Ｌにしてもよい。   27 and 28, the optical cable form considered by the present inventor is mainly different from the first preferred embodiment for carrying out the present invention in that an optical fiber tape core is provided between the tension members 3 and 3. The optical cable 1L configured in this way may be used in that the line is used as the optical cord 2A.

図２９および図３０に示す本発明を実施するための第３の形態において、前記本発明を実施するための最良の第１の形態と主に異なる点は、テンションメンバー３、３間に光ファイバテープ心線２ａの外周部を抗張力繊維２ｂおよび被膜層２ｃで覆った光ファイバテープコードを光コード２Ｂとして用いた点で、このように構成された光ケーブル１Ｍにしても、前記本発明を実施するための最良の第１の形態と同様な作用効果が得られる。   The third embodiment for carrying out the present invention shown in FIGS. 29 and 30 is mainly different from the best first embodiment for carrying out the present invention in that an optical fiber is provided between the tension members 3 and 3. The optical fiber tape cord in which the outer peripheral portion of the tape core wire 2a is covered with the tensile strength fiber 2b and the coating layer 2c is used as the optical cord 2B, and thus the present invention is carried out even with the optical cable 1M configured as described above. Therefore, the same effects as those of the best first embodiment can be obtained.

なお、前記本発明を実施するための各形態では光ファイバ心線６、抗張力繊維層７、被覆層８で構成された光コード２を用いたが、本発明はこれに限らず、光ファイバ心線６そのもの、またはその外周部を１層以上の被覆層で覆ったものであれば、どんな構造のものであってもよい。   In each of the embodiments for carrying out the present invention, the optical cord 2 composed of the optical fiber core 6, the tensile fiber layer 7, and the covering layer 8 is used. However, the present invention is not limited to this, and the optical fiber core is not limited thereto. Any structure may be used as long as the wire 6 itself or the outer periphery thereof is covered with one or more coating layers.

本発明は光ケーブルを製造する産業で利用される。   The present invention is used in the industry for manufacturing optical cables.

本発明を実施するための最良の第１の形態の斜視図。1 is a perspective view of the best first embodiment for carrying out the present invention. 図１の２−２線に沿う拡大断面図。The expanded sectional view which follows the 2-2 line of FIG. 本発明を実施するための最良の第１の形態の配線状態の説明図。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 図３の４−４線に沿う拡大断面図。The expanded sectional view which follows the 4-4 line of FIG. 本発明者が考えた光ケーブルの斜視図。The perspective view of the optical cable which this inventor considered. 図５の６−６線に沿う拡大断面図。The expanded sectional view which follows the 6-6 line of FIG. 本発明者が考えた光ケーブルの異なる形態の斜視図。The perspective view of the different form of the optical cable which this inventor considered. 図７の８−８線に沿う拡大断面図。The expanded sectional view which follows the 8-8 line of FIG. 本発明を実施するための第２の形態の斜視図。The perspective view of the 2nd form for implementing this invention. 図９の１０−１０線に沿う拡大断面図。The expanded sectional view which follows the 10-10 line of FIG. 本発明者が考えた光ケーブルの異なる形態の斜視図。The perspective view of the different form of the optical cable which this inventor considered. 図１１の１２−１２線に沿う拡大断面図。The expanded sectional view which follows the 12-12 line of FIG. 本発明者が考えた光ケーブルの異なる形態の斜視図。The perspective view of the different form of the optical cable which this inventor considered. 図１３の１４−１４線に沿う拡大断面図。The expanded sectional view which follows the 14-14 line of FIG. 本発明者が考えた光ケーブルの異なる形態の斜視図。The perspective view of the different form of the optical cable which this inventor considered. 図１５の１６−１６線に沿う拡大断面図。The expanded sectional view which follows the 16-16 line of FIG. 本発明者が考えた光ケーブルの異なる形態の斜視図。The perspective view of the different form of the optical cable which this inventor considered. 図１７の１８−１８線に沿う拡大断面図。The expanded sectional view which follows the 18-18 line of FIG. 本発明者が考えた光ケーブルの異なる形態の斜視図。The perspective view of the different form of the optical cable which this inventor considered. 図１９の２０−２０線に沿う拡大断面図。The expanded sectional view which follows the 20-20 line of FIG. 本発明者が考えた光ケーブルの異なる形態の斜視図。The perspective view of the different form of the optical cable which this inventor considered. 図２１の２２−２２線に沿う拡大断面図。FIG. 22 is an enlarged sectional view taken along line 22-22 in FIG. 本発明者が考えた光ケーブルの異なる形態の斜視図。The perspective view of the different form of the optical cable which this inventor considered. 図２３の２４−２４線に沿う拡大断面図。FIG. 24 is an enlarged sectional view taken along line 24-24 in FIG. 本発明者が考えた光ケーブルの異なる形態の斜視図。The perspective view of the different form of the optical cable which this inventor considered. 図２５の２６−２６線に沿う拡大断面図。FIG. 26 is an enlarged sectional view taken along line 26-26 in FIG. 本発明者が考えた光ケーブルの異なる形態の斜視図。The perspective view of the different form of the optical cable which this inventor considered. 図２７の２８−２８線に沿う拡大断面図。The expanded sectional view which follows the 28-28 line | wire of FIG. 本発明を実施するための第３の形態の斜視図。The perspective view of the 3rd form for carrying out the present invention. 図２９の３０−３０線に沿う拡大断面図。The expanded sectional view which follows the 30-30 line of FIG.

１、１Ａ、〜１Ｍ：光ケーブル、
２、２Ａ、２Ｂ：光コード、
３、３Ａ、３Ｂ：テンションメンバー、
４：凹部、 ５、５Ａ〜５Ｄ：シース、
６：光ファイバ心線、 ７：抗張力繊維層、
８：被覆層、 ９、９Ａ：抗張力体、
１０：被覆層、 １１：切り欠部、
１２：ステップル、 １３：圧力吸収隙間
１４：クッション材。 1, 1A to 1M: optical cable,
2, 2A, 2B: optical cord,
3, 3A, 3B: tension members,
4: Recess, 5, 5A to 5D: sheath,
6: Optical fiber core wire, 7: Tensile fiber layer,
8: Coating layer, 9, 9A: Tensile body,
10: coating layer, 11: notch,
12: Steple, 13: Pressure absorption gap 14: Cushion material.

Claims (4)

少なくとも1本以上の光コードと、この少なくとも1本以上の光コードの両側部に並列するように配置されたテンションメンバーと、このテンションメンバーと前記少なくとも1本以上の光コードの外周部を、該少なくとも1本以上の光コードの位置する上下部位の両方あるいは一方が凹部状となるように覆うシースとからなり、前記シースは軸に垂直な断面が長方形状に形成され、前記凹部は軸に垂直な断面が台形状に形成され、前記光コードが光ファイバ心線と、この光ファイバ心線の外周部を覆う抗張力繊維層と、この抗張力繊維層の外周部を覆う被覆層とで構成され、前記テンションメンバーがステップルに対するケーブルとしての剛性を持たせるために直径が０．６ｍｍ以上の抗張力体と、この抗張力体の外周部を覆う被覆層とで構成され、前記光コードの径が前記抗張力体の径よりも大きいことを特徴とする光ケーブル。 At least one or more optical cords, a tension member arranged to be parallel to both sides of the at least one or more optical cords, and an outer peripheral portion of the tension member and the at least one or more optical cords, The sheath includes a sheath that covers at least one or both of the upper and lower portions where one or more optical cords are positioned so as to form a recess. The sheath has a rectangular cross section perpendicular to the axis, and the recess is perpendicular to the axis. A cross section is formed in a trapezoidal shape, the optical cord is composed of an optical fiber core, a tensile fiber layer covering the outer periphery of the optical fiber core, and a covering layer covering the outer periphery of the tensile fiber layer, In order for the tension member to have rigidity as a cable with respect to the staple, the tension member is composed of a strength member having a diameter of 0.6 mm or more and a covering layer covering the outer periphery of the strength member. The optical cable is characterized in that the diameter of the optical cord is larger than the diameter of the strength member. 光コードは、２心以上の光ファイバテープコードであることを特徴とする請求項１に記載の光ケーブル。 The optical cable according to claim 1, wherein the optical cord is an optical fiber tape cord having two or more cores. テンションメンバーはステップルに対するケーブルとしての剛性を持たせるために直径が０．６ｍｍ以上の金属製抗張力体を用いたものが使用されていることを特徴とする請求項１、２いずれかに記載の光ケーブル。 3. The optical cable according to claim 1, wherein the tension member is made of a metal strength member having a diameter of 0.6 mm or more in order to give rigidity as a cable to the staple. . シースの形状は、光コードの位置する上下部位の両方あるいは一方が凹部状であり、凹部底部の幅が、該少なくとも1本以上の光コードの幅以上となるように覆うように形成されていることを特徴とする請求項１、２いずれかに記載の光ケーブル。 The shape of the sheath is formed so that both or one of the upper and lower parts where the optical cord is located are concave, and the width of the bottom of the concave is equal to or larger than the width of the at least one optical cord. An optical cable according to any one of claims 1 and 2.
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