JP4541348B2 - Fiber optic cable - Google Patents

Fiber optic cable Download PDF

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JP4541348B2
JP4541348B2 JP2006331643A JP2006331643A JP4541348B2 JP 4541348 B2 JP4541348 B2 JP 4541348B2 JP 2006331643 A JP2006331643 A JP 2006331643A JP 2006331643 A JP2006331643 A JP 2006331643A JP 4541348 B2 JP4541348 B2 JP 4541348B2
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optical fiber
fiber cable
cable
notch
coating layer
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JP2008145656A (en
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浩二 中原
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Fujitsu Telecom Networks Ltd
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Description

本発明は光ファイバーケーブルに関し、詳しくは公差を考慮することなく余長処理が可能な光ファイバーケーブルに関する。   The present invention relates to an optical fiber cable, and more particularly, to an optical fiber cable that can perform extra length processing without considering tolerances.

特許文献１に開示されるように、従来、光通信機器等の筐体内で光ファイバーケーブルのルート強制及び余長処理を行う際に、ケーブルクランプ（クリップ）が広く使用されている。
即ち、光ファイバーケーブルのルートを強制するため、所定のケーブルルートに沿ってプリント配線板に取付穴を設けてこれらにケーブルクランプを挿着し、或いは両面テープでプリント配線板上にケーブルクランプを貼着して、ケーブルクランプに光ファイバーケーブルを挿通させている。 As disclosed in Patent Document 1, conventionally, a cable clamp (clip) has been widely used when performing route forcing and extra length processing of an optical fiber cable in a housing of an optical communication device or the like.
In other words, in order to force the route of the optical fiber cable, mounting holes are provided in the printed wiring board along the predetermined cable route and the cable clamp is inserted into these, or the cable clamp is attached on the printed wiring board with double-sided tape. The optical fiber cable is inserted through the cable clamp.

そして、複数のケーブルクランプをプリント配線板上に円形に配置し、これらに光ファイバーケーブルを巻回して余長処理を行っているが、光ファイバーケーブルは曲げ半径が小さくなるほど通信特性に影響するため、光ファイバーケーブルの仕様（種類）によって最小曲げ半径が決まっている。
このため、ケーブルクランプを使用する場合、最小曲げ半径を考慮してプリント配線板にケーブルクランプを取り付け、これに光ファイバーケーブルを巻回して最小曲げ半径を確保していた。 A plurality of cable clamps are arranged in a circle on a printed wiring board, and an optical fiber cable is wound around these to perform extra length processing. However, the optical fiber cable affects the communication characteristics as the bend radius becomes smaller. The minimum bend radius is determined by the specification (type) of the cable.
For this reason, when a cable clamp is used, a cable clamp is attached to a printed wiring board in consideration of a minimum bending radius, and an optical fiber cable is wound around the printed wiring board to ensure a minimum bending radius.

また、昨今では、上述の如きケーブルクランプに代え、特許文献２に開示されるように光通信機器等の筐体内に余長処理構造を設けて、光ファイバーケーブルの余長処理を可能とした技術が提案され、広く使用されている。
実開昭６３−８７０５号公報 特開２００３−２７９７５４号公報 Recently, instead of the cable clamp as described above, as disclosed in Patent Document 2, an extra length processing structure is provided in a housing of an optical communication device or the like to enable extra length processing of an optical fiber cable. Proposed and widely used.
Japanese Utility Model Publication No. 63-8705 JP 2003-279754 A

しかし乍ら、従来、ケーブルクランプを用いて余長処理を行う場合、最小曲げ半径げ半径を考慮し乍ら、巻き取りに工夫を凝らして長さを調整しているため、手間と時間がかかっているのが実情であった。
また、ケーブル製造時の精度も必要とされ、このため、光ファイバーケーブルの長さ交差を厳しくすることから歩留まりが悪化してコストがアップし、更にまた、最小曲げ半径を確保しつつ、例えば発熱体の部品に接触しないように余長処理を行ったり光ファイバーケーブルを複雑に曲げることが難しいのが実情であった。 However, in the past, when extra length processing was performed using a cable clamp, taking into account the minimum bending radius, the length was adjusted by taking up the winding, so it took time and effort. It was the actual situation.
In addition, accuracy in cable manufacturing is also required. For this reason, since the length crossing of the optical fiber cable is made strict, the yield is deteriorated and the cost is increased, and further, for example, a heating element is secured while ensuring a minimum bending radius. The actual situation is that it is difficult to perform extra length processing so as not to contact these parts or to bend the optical fiber cable in a complicated manner.

一方、特許文献２の如く筐体内に余長処理構造を設ける従来例は、筐体の構造が複雑化し、筐体の製造に当たりコストがかかってしまう不具合があった。
本発明は斯かる実情に鑑み案出されたもので、公差を考慮することなく余長処理が可能な光ファイバーケーブルを提供することを目的とする。 On the other hand, the conventional example in which the extra length processing structure is provided in the casing as in Patent Document 2 has a problem that the casing structure is complicated and the manufacturing cost of the casing is high.
The present invention has been devised in view of such circumstances, and an object thereof is to provide an optical fiber cable capable of extra length processing without considering tolerances.

斯かる目的を達成するため、請求項１に係る発明は、コアとクラッドからなる心線を被覆層で被覆した光ファイバーケーブルに於て、前記被覆層の外周面に、湾曲状に凹んでケーブル径と略等しい幅寸法を有し、当該幅寸法よりもケーブルの長手方向に長尺な平面視楕円形状の切欠きを、周方向に９０°または１８０°の間隔を空けてケーブルの長手方向に沿って交互に複数設けて、前記被覆層の外形形状を波形に形成したことを特徴とする。
そして、請求項２に係る発明は、請求項１に記載の光ファイバーケーブルに於て、前記切欠きは、光ファイバーケーブルを固定する係止部材の係止部であることを特徴とする。 To achieve such object, the invention according to claim 1, cable diameter core wire comprising a core and a clad At a fiber optic cable coated with a coating layer, on the outer peripheral surface of the coating layer, recessed in a curved shape A notch having an elliptical shape in plan view that is longer in the longitudinal direction of the cable than the width dimension, and extending along the longitudinal direction of the cable with an interval of 90 ° or 180 ° in the circumferential direction. A plurality of the coating layers are alternately provided, and the outer shape of the coating layer is formed in a waveform.
The invention according to claim 2 is the optical fiber cable according to claim 1, characterized in that the notch is a locking portion of a locking member for fixing the optical fiber cable.

各請求項に係る発明によれば、実装時のテンションによって高さを含めた所謂３Ｄで余長処理が行われるため、光ファイバーケーブルの公差を考慮することなく余長処理が可能となり、この結果、公差がラフになることで歩留まりが良好となってコストダウンが図れる。
また、被覆層（光ファイバーケーブル）を波形形状にすることで、従来に比し光ファイバーケーブルを自在に曲げることが可能となるため、通信特性を損なうことなく複雑な余長処理、例えば、発熱体の部品に接触しないような余長処理が可能となる。 According to the invention according to each claim, since the extra length processing is performed in so-called 3D including the height by the tension at the time of mounting, the extra length processing is possible without considering the tolerance of the optical fiber cable. The rough tolerances improve yield and reduce costs.
In addition, since the coating layer (optical fiber cable) has a corrugated shape, the optical fiber cable can be bent freely as compared with the conventional one. Therefore, complicated extra length processing without deteriorating communication characteristics, for example, heating element Extra length processing that does not come into contact with components is possible.

そして、請求項２に係る発明によれば、切欠きに係止部材を係止させることで光ファイバーケーブルのズレを規制することができる利点を有する。 In the invention according to claim 2 has the advantage that can be regulated deviation of the optical fiber cable by engaging the locking member in the notch.

以下、本発明の実施形態を図面に基づいて詳細に説明する。
図１は請求項１及び請求項２の第一実施形態に係る光ファイバーケーブルを示し、図中、１はコアとクラッドからなる心線３を周知の樹脂材料からなる被覆層５で被覆した光ファイバーケーブルで、図示するように光ファイバーケーブル１は、被覆層５の外周面に、湾曲状に凹んでケーブル径と略等しい幅寸法を有し、且つ当該幅寸法よりも光ファイバーケーブル１の長手方向に長尺な平面視楕円形状の切欠き７が、被覆層５の周方向に１８０°の間隔を空けて光ファイバーケーブル１の軸方向に沿って交互に複数形成されて、被覆層５の外形形状が波形に形成されている。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an optical fiber cable according to the first embodiment of claim 1 and claim 2. In FIG. 1, reference numeral 1 denotes an optical fiber cable in which a core 3 made of a core and a clad is covered with a coating layer 5 made of a known resin material. As shown in the figure, the optical fiber cable 1 has a width dimension that is recessed in a curved shape on the outer peripheral surface of the covering layer 5 and substantially equal to the cable diameter, and is longer in the longitudinal direction of the optical fiber cable 1 than the width dimension. A plurality of notches 7 having an elliptical shape in plan view are alternately formed along the axial direction of the optical fiber cable 1 with an interval of 180 ° in the circumferential direction of the coating layer 5 , and the outer shape of the coating layer 5 has a waveform. Is formed.

そして、切欠き７は心線３に達しない深さに設定され、心線３は被覆層５の波形形状に拘わらず直線状に配線されている。
而して、前記切欠き７は、図４及び図５に示す光ファイバーケーブル１Ａ製造後の後加工で、以下の如く形成される。
尚、ここでいう光ファイバーケーブル１Ａとは、前記切欠き７が被覆層５に形成される以前のものをいう。 The notch 7 is set to a depth that does not reach the core wire 3, and the core wire 3 is wired linearly regardless of the corrugated shape of the coating layer 5.
Thus, the notch 7 is formed as follows in the post-processing after the optical fiber cable 1A shown in FIGS. 4 and 5 is manufactured.
Here, the optical fiber cable 1 </ b> A here refers to a cable before the notch 7 is formed in the coating layer 5.

図４及び図５に於て、９，１１は、光ファイバーケーブル１Ａが挿通可能な間隙を空けて周面１３，１５が対向する上下一対の円盤状のローラで、図示するように両ローラ９，１１は、光ファイバーケーブル１Ａの挿通方向に沿って矢印方向へ回転し、また、両ローラ９，１１は、回転駆動時に任意の手段で加熱されるようになっている。
更に、両ローラ９，１１の周面１３，１５には、夫々、前記切欠き７を形成する４個の平面視楕円形状且つ断面円弧状の突起１７が周方向に９０°の間隔を空けて突設されており、図４に示すようにローラ９側の突起１７とローラ１１側の突起１７は、位相を４５°ずらして配置されている。 4 and 5, reference numerals 9 and 11 denote a pair of upper and lower disk-shaped rollers facing the circumferential surfaces 13 and 15 with a gap through which the optical fiber cable 1A can be inserted. 11 rotates in the direction of the arrow along the insertion direction of the optical fiber cable 1A, and both rollers 9 and 11 are heated by an arbitrary means during rotation driving.
Further, on the peripheral surfaces 13 and 15 of both the rollers 9 and 11, four projections 17 having an elliptical shape in section and an arcuate section forming the notch 7 are spaced apart by 90 ° in the circumferential direction. As shown in FIG. 4, the protrusion 17 on the roller 9 side and the protrusion 17 on the roller 11 side are arranged with a phase shifted by 45 °.

そして、図示するように両ローラ９，１１間に光ファイバーケーブル１Ａを挿通させると、突起１７が光ファイバーケーブル１Ａの被覆層５に当接するようになっており、斯様にローラ９，１１間に光ファイバーケーブル１Ａを挿通させてローラ９，１１を矢印方向へ回転させると、突起１７は、当接する部位の樹脂製の被覆層５を熱で柔らかくして、被覆層５の外周に前記切欠き７を被覆層５の周方向に１８０°の間隔を空けて光ファイバーケーブル１Ａの軸方向に交互に形成していくようになっている。そして、既述したように切欠き７は心線３に達しない深さに形成されており、図２及び図３に示すように、例えば光ファイバーケーブル１をプリント基板１９上に周知のケーブルクランプ（係止部材）２１を用いて余長処理する際に、切欠き７がケーブルクランプ２１の係止部として機能するようになっている。   As shown in the figure, when the optical fiber cable 1A is inserted between the rollers 9 and 11, the protrusion 17 comes into contact with the coating layer 5 of the optical fiber cable 1A. When the cable 1A is inserted and the rollers 9 and 11 are rotated in the direction of the arrow, the protrusion 17 softens the resin coating layer 5 at the contacted portion with heat so that the notch 7 is formed on the outer periphery of the coating layer 5. The coating layers 5 are alternately formed in the axial direction of the optical fiber cable 1A at intervals of 180 ° in the circumferential direction. As described above, the notch 7 is formed to a depth that does not reach the core wire 3, and as shown in FIGS. 2 and 3, for example, the optical fiber cable 1 is placed on the printed circuit board 19 with a well-known cable clamp ( When the extra length processing is performed using the locking member 21, the notch 7 functions as a locking portion of the cable clamp 21.

本実施形態に係る光ファイバーケーブル１はこのように構成されているから、図２及び図３に示すように切欠き７を左右方向に向け乍ら、切欠き７にケーブルクランプ２１を係止して光ファイバーケーブル１をプリント基板１９上に配線（余長処理）すると、光ファイバーケーブル１は実装時のテンションによって左右方向に波打ち、或いは図示しないが、テンションがかかって光ファイバーケーブル１が引っ張られてストレート状に伸び、公差を吸収する。   Since the optical fiber cable 1 according to the present embodiment is configured in this way, the cable clamp 21 is locked to the notch 7 while the notch 7 is turned in the left-right direction as shown in FIGS. When the optical fiber cable 1 is wired on the printed circuit board 19 (excess length processing), the optical fiber cable 1 is waved in the left-right direction due to the tension at the time of mounting, or although not shown, the optical fiber cable 1 is pulled and stretched straightly. Elongates and absorbs tolerances.

また、図示しないが切欠き７を上下方向に向け乍ら、切欠き７に別形状のケーブルクランプを係止して光ファイバーケーブル１をプリント基板１９上に配線（余長処理）すると、光ファイバーケーブル１は実装時のテンションによって上下方向に波打ち、或いはテンションがかかって光ファイバーケーブル１が引っ張られてストレート状に伸び、公差を吸収する。   Although not shown, when the notch 7 is turned up and down, a cable clamp of another shape is locked to the notch 7 and the optical fiber cable 1 is wired on the printed circuit board 19 (excess length processing), the optical fiber cable 1 Is waved in the vertical direction by the tension at the time of mounting, or the optical fiber cable 1 is pulled by tension and stretched straight to absorb the tolerance.

このように本実施形態は、被覆層５に前記形状からなる切欠き７を１８０°の間隔を空けて交互に形成して被覆層５（光ファイバーケーブル１）の外形形状を波形形状にすることで、実装時のテンションによって高さを含めた所謂３Ｄで余長処理が行われるため、光ファイバーケーブル１の公差を考慮することなく余長処理が可能となり、この結果、公差がラフになることで歩留まりが良好となってコストダウンが図れる。
As described above, in the present embodiment, the notches 7 having the above-described shape are alternately formed in the covering layer 5 with an interval of 180 ° so that the outer shape of the covering layer 5 (optical fiber cable 1) is a corrugated shape. Since the extra length processing is performed in so-called 3D including the height by the tension at the time of mounting, the extra length processing is possible without considering the tolerance of the optical fiber cable 1, and as a result, the yield becomes rough due to the rough tolerance. Can be reduced and cost can be reduced.

また、斯様に被覆層５（光ファイバーケーブル１）の外形形状を波形形状にすることで、従来に比し光ファイバーケーブル１を自在に曲げることが可能となるため、図６に示すように最小曲げ半径（例えば、Ｒ１６）を確保し乍ら、光ファイバーケーブル１の通信特性を損なうことなく複雑な余長処理、例えば、発熱体の部品に接触しないような余長処理が可能となった。
そして、切欠き７にケーブルクランプ２１を係止させることで、光ファイバーケーブル１のズレを規制することができる利点を有する 。 In addition, since the outer shape of the coating layer 5 (optical fiber cable 1) is corrugated as described above, the optical fiber cable 1 can be bent more freely than in the prior art. While ensuring the radius (for example, R16), it is possible to perform a complicated extra length process without impairing the communication characteristics of the optical fiber cable 1, for example, an extra length process that does not contact the components of the heating element.
Then, by locking the cable clamp 21 in the notch 7, there is an advantage that the deviation of the optical fiber cable 1 can be regulated.

図７は請求項１及び請求項２の第二実施形態に係る光ファイバーケーブルを示し、本実施形態は、前記切欠き７と同一形状の切欠き７を被覆層５の周方向に９０°宛変位して被覆層５（光ファイバーケーブル１-1）の軸方向に形成することで、被覆層５（光ファイバーケーブル１-1）の外形形状を波形に形成したものである。
そして、本実施形態に於ても、前記切欠き７は、図８及び図９に示す光ファイバーケーブル１Ａ製造後の後加工で、以下の如く形成される。 FIG. 7 shows an optical fiber cable according to the second embodiment of claims 1 and 2. In this embodiment, the notch 7 having the same shape as the notch 7 is displaced by 90 ° in the circumferential direction of the coating layer 5. By forming the coating layer 5 (optical fiber cable 1-1) in the axial direction, the outer shape of the coating layer 5 (optical fiber cable 1-1) is formed into a waveform.
Also in the present embodiment, the notch 7 is formed as follows by post-processing after manufacturing the optical fiber cable 1A shown in FIGS.

図８及び図９に示すように本実施形態は、既述した上下一対の円盤状のローラ９，１１に加え、これらと同方向に回転する同一形状，同一構造の左右一対のローラ２３，２５をローラ９，１１間に配置して、４個のローラ９，１１，２３，２５を９０°の間隔を空けて十字状に配置している。そして、図９に示すようにローラ９→ローラ２３→ローラ１１→ローラ２５→ローラ９へと反時計回りに、夫々の周面１３，２７，１５，２９に突設した突起１７が位相を２２．５°ずらして配置されている。   As shown in FIGS. 8 and 9, this embodiment is not limited to the pair of upper and lower disk-shaped rollers 9 and 11 described above, and a pair of left and right rollers 23 and 25 having the same shape and the same structure rotating in the same direction as these. Are arranged between the rollers 9, 11, and the four rollers 9, 11, 23, 25 are arranged in a cross shape with an interval of 90 °. Then, as shown in FIG. 9, the projections 17 projecting on the respective peripheral surfaces 13, 27, 15, 29 in the counterclockwise direction of roller 9 → roller 23 → roller 11 → roller 25 → roller 9 have a phase of 22 .5 ° shifted.

そして、図示するようにローラ９，１１，２３，２５間に光ファイバーケーブル１Ａを挿通させると、突起１７が光ファイバーケーブル１Ａの被覆層５に当接するようになっており、斯様にローラ９，１１，２３，２５間に光ファイバーケーブル１Ａを挿通させてローラ９，１１，２３，２５を矢印方向へ回転させると、突起１７が当接する部位の被覆層５を熱で柔らかくして、被覆層５の外周に前記切欠き７を被覆層５の周方向に９０°宛変位して光ファイバーケーブル１Ａの軸方向に形成していくようになっている。   As shown in the figure, when the optical fiber cable 1A is inserted between the rollers 9, 11, 23, 25, the protrusion 17 comes into contact with the coating layer 5 of the optical fiber cable 1A. , 23, 25, the optical fiber cable 1A is inserted and the rollers 9, 11, 23, 25 are rotated in the direction of the arrow. On the outer periphery, the notch 7 is displaced by 90 ° in the circumferential direction of the coating layer 5 and formed in the axial direction of the optical fiber cable 1A.

本実施形態に係る光ファイバーケーブル１-1はこのように構成されているから、図１０に示すように切欠き７にケーブルクランプ２１を適宜係止して光ファイバーケーブル１-1をプリント基板１９上に配線（余長処理）すると、光ファイバーケーブル１-1は実装時のテンションによって上下方向及び左右方向に波打ち、或いは図示しないが、テンションがかかって光ファイバーケーブル１-1が引っ張られて伸び、公差を吸収する。 Since the optical fiber cable 1-1 according to the present embodiment is configured as described above, the cable clamp 21 as appropriate and engaged in on a printed circuit board 19 of the optical fiber cables 1-1 in the notch 7 as shown in FIG. 10 When wiring (excess length processing), the optical fiber cable 1-1 corrugates in the vertical and horizontal directions depending on the tension at the time of mounting, or although not shown, the optical fiber cable 1-1 is stretched and stretched by tension and absorbs tolerances To do.

このように本実施形態によっても、被覆層５の周方向に切欠き７を９０°宛変位させて被覆層５（光ファイバーケーブル１-1）の軸方向に設けて被覆層５（光ファイバーケーブル１-1）の外形形状を波形形状にすることで、実装時のテンションによって高さを含めた所謂３Ｄで余長処理が可能となるため、光ファイバーケーブル１-1の公差を考慮することなく余長が可能となり、この結果、公差がラフになることで歩留まりが良好となってコストダウンが図れることとなった。 Thus, also in this embodiment, the notch 7 is displaced 90 ° in the circumferential direction of the covering layer 5 and provided in the axial direction of the covering layer 5 (optical fiber cable 1-1) to provide the covering layer 5 (optical fiber cable 1−). By making the outer shape of 1) corrugated, the extra length can be processed in so-called 3D including the height by the tension at the time of mounting, so the extra length can be reduced without considering the tolerance of the optical fiber cable 1-1. As a result, since the tolerance becomes rough, the yield is improved and the cost can be reduced.

また、本実施形態によれば、図１の光ファイバーケーブル１に比し更に変形自在に曲げることが可能となるため、より複雑な余長処理が可能となる利点を有する。 Further, according to this embodiment, since it is possible to bend more freely deformed compared to the optical fiber cable 1 of Figure 1, to have a benefit of a more complicated extra length handling it becomes possible.

請求項１及び請求項２の第一実施形態に係る光ファイバーケーブルの平面図である。It is a top view of the optical fiber cable which concerns on 1st embodiment of Claim 1 and Claim 2 . 光ファイバーケーブルを余長処理した平面図である。It is the top view which processed the extra length of the optical fiber cable. ケーブルクランプとプリント基板の断面図である。It is sectional drawing of a cable clamp and a printed circuit board. 図１に示す光ファイバーケーブルの製造方法の説明図である。It is explanatory drawing of the manufacturing method of the optical fiber cable shown in FIG. 図１に示す光ファイバーケーブルの製造方法の説明図である。It is explanatory drawing of the manufacturing method of the optical fiber cable shown in FIG. 光ファイバーケーブルを余長処理した平面図である。It is the top view which processed the extra length of the optical fiber cable. 請求項１及び請求項２の第二実施形態に係る光ファイバーケーブルの平面図である。It is a top view of the optical fiber cable which concerns on 2nd embodiment of Claim 1 and Claim 2 . 図７に示す光ファイバーケーブルの製造方法の説明図である。It is explanatory drawing of the manufacturing method of the optical fiber cable shown in FIG. 図７に示す光ファイバーケーブルの製造方法の説明図である。It is explanatory drawing of the manufacturing method of the optical fiber cable shown in FIG. 光ファイバーケーブルを余長処理した平面図である。It is the top view which processed the extra length of the optical fiber cable.

符号の説明Explanation of symbols

１，１Ａ，１-1 光ファイバーケーブル
３ 心線
５ 被覆層
７ 切欠き
９，１１，２３，２５ ローラ
１３，１５，２７，２９ 周面
１７ 突起
１９ プリント基板
２１ ケーブルクランプ 1, 1A, 1-1 optical fiber cable 3 core wire 5 coating layer 7 notch 9, 11, 23, 25 roller 13, 15, 27, 29 peripheral surface 17 protrusion 19 printed circuit board 21 cable clamp

Claims (2)

コアとクラッドからなる心線を被覆層で被覆した光ファイバーケーブルに於て、
前記被覆層の外周面に、湾曲状に凹んでケーブル径と略等しい幅寸法を有し、当該幅寸法よりもケーブルの長手方向に長尺な平面視楕円形状の切欠きを、周方向に９０°または１８０°の間隔を空けてケーブルの長手方向に沿って交互に複数設けて、前記被覆層の外形形状を波形に形成したことを特徴とする光ファイバーケーブル。 In an optical fiber cable in which a core consisting of a core and a clad is covered with a coating layer,
On the outer peripheral surface of the covering layer, a notch having an elliptical shape in plan view that is concave in a curved shape and has a width dimension substantially equal to the cable diameter and is longer in the longitudinal direction of the cable than the width dimension is 90 in the circumferential direction. An optical fiber cable, wherein a plurality of the coating layers are alternately provided along the longitudinal direction of the cable at intervals of ° or 180 °, and the outer shape of the coating layer is formed in a waveform. 前記切欠きは、光ファイバーケーブルを固定する係止部材の係止部であることを特徴とする請求項１に記載の光ファイバーケーブル。 The notches, fiber optic cable according to claim 1, wherein the locking portion der Rukoto of the locking member for fixing the optical fiber cable.
JP2006331643A 2006-12-08 2006-12-08 Fiber optic cable Expired - Fee Related JP4541348B2 (en)

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