JPH0143683Y2 - - Google Patents
Info
- Publication number
- JPH0143683Y2 JPH0143683Y2 JP1984025666U JP2566684U JPH0143683Y2 JP H0143683 Y2 JPH0143683 Y2 JP H0143683Y2 JP 1984025666 U JP1984025666 U JP 1984025666U JP 2566684 U JP2566684 U JP 2566684U JP H0143683 Y2 JPH0143683 Y2 JP H0143683Y2
- Authority
- JP
- Japan
- Prior art keywords
- water
- optical fiber
- fibers
- cable
- waterproof
- 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
- 239000013307 optical fiber Substances 0.000 claims description 28
- 239000000835 fiber Substances 0.000 claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 239000002250 absorbent Substances 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 229920003043 Cellulose fiber Polymers 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 229920000271 Kevlar® Polymers 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 150000001734 carboxylic acid salts Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000004761 kevlar Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004264 Petrolatum Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010559 graft polymerization reaction Methods 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229940066842 petrolatum Drugs 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000011041 water permeability test Methods 0.000 description 1
Description
【考案の詳細な説明】
〔技術分野〕
本考案は防水型光フアイバケーブルの構造に係
わる。[Detailed Description of the Invention] [Technical Field] The present invention relates to the structure of a waterproof optical fiber cable.
光フアイバとその長期信頼性保持のため、屋外
のきびしい環境下、特に水分や湿気の及ぶ恐れの
ある所で使用する場合には、その水分から守るた
めに防水性のコンパウンドを光フアイバの周囲に
配して、水の侵入を防ぐ。
To maintain the long-term reliability of optical fibers, when using them outdoors in harsh environments, especially in areas where there is a risk of moisture or humidity, a waterproof compound should be applied around the optical fibers to protect them from moisture. to prevent water from entering.
またケーブルに障害が発生して水が侵入した場
合には、ケーブル内の長手方向に水が伝わるのを
防水性コンパウンドにより最小限にくい止める必
要がある。 Furthermore, in the event that a failure occurs in the cable and water intrudes, it is necessary to use a waterproof compound to minimize the transmission of water in the longitudinal direction of the cable.
一般にこれらの防水性コンパウンドとして、ペ
トロタム系ジエリーやポリブテン系のジエリー、
そして鉱油にゴムを膨潤溶解させたゲル状のジエ
リーなどが使用されている。 Generally, these waterproof compounds include petrolatum-based jewelry, polybutene-based jewelry,
Gel-like jewelry made by swelling and dissolving rubber in mineral oil is also used.
またセルロースやでんぷんの表面にグラフト重
合させた吸水性を大きく改質した超吸水性粉末や
吸水性無機化合物粉末などを充填することも考え
られる。 It is also conceivable to fill the surface of cellulose or starch with super-absorbent powder or water-absorbing inorganic compound powder that has been graft-polymerized and has greatly improved water absorption.
しかしながら、前記のジエリーを使用する方法
では、ジエリーを液体状態にして圧入するため
に、高温にして溶解すること、更にポンプで圧入
する注入装置が必要であり、高温にすることか
ら、ケーブルコアへの熱の影響、更に注入作業時
のジエリーの「べたつき」による取扱いの因難さ
などに問題がある。そしてこのジエリーの「べた
つき」は光フアイバなどの接続時にも種々の溶剤
等でぬぐい取る必要があるなど作業性にも問題が
ある。前述の粉末を使用する方法も、粉体を取扱
うため、作業環境保護の観点がら防じん設備が必
要であり、また粉体をケーブルコア内の細部に均
一に充填することを技術的にむつかしい問題であ
る。 However, in the above-mentioned method of using jewelry, in order to make the jewelry into a liquid state and press fit it into the cable core, it is necessary to melt the jewelry at a high temperature and to use an injection device to press fit it in with a pump. Problems include the effects of heat and the difficulty of handling due to the stickiness of the jewelry during injection work. The "stickiness" of this jewelry also poses problems in workability, as it is necessary to wipe it off with various solvents when connecting optical fibers. The above-mentioned method using powder also requires dust prevention equipment from the viewpoint of protecting the working environment since powder is handled, and it is technically difficult to uniformly fill the details of the cable core with powder. be.
本考案は以上説明したような従来の光フアイバ
に対する防水構成の欠点を補う新しい防水構成を
備える防水型光フアイバケーブルにあり、単心ま
たは複数の光フアイバの周囲に、ケブラー繊維や
炭素繊維などの補強用テンシヨンメンバを配した
光フアイバケーブルに防水特性を付与する手段と
して、吸水性の連続長繊維を前述の補強用テンシ
ヨンメンバとともに用い、特に、ケーブルの製造
上および接続時の光フアイバの取扱い性にすぐれ
た防水型光フアイバケーブルを提供するものであ
る。
The present invention is a waterproof optical fiber cable with a new waterproof structure that compensates for the drawbacks of the conventional waterproof structure of optical fibers as explained above. As a means of imparting waterproof properties to optical fiber cables equipped with reinforcing tension members, water-absorbing continuous long fibers are used together with the above-mentioned reinforcing tension members. The present invention provides a waterproof optical fiber cable that is easy to handle.
第１図は単心の光フアイバを対象とする本考案
実施例の断面図である。
FIG. 1 is a sectional view of an embodiment of the present invention intended for a single-core optical fiber.
図において４は光フアイバであり、３は光フア
イバ４の外側に配された高吸水性の連続長繊維を
示し、２はその外側に配された補強用テンシヨン
メンバであり、５は最外側に配された外被であ
る。 In the figure, 4 is an optical fiber, 3 is a highly water-absorbent continuous long fiber placed on the outside of the optical fiber 4, 2 is a reinforcing tension member placed on the outside, and 5 is the outermost side. It is the outer covering placed on the
第２図は複数心の光フアイバを対象とする本考
案実施例の断面図である。 FIG. 2 is a sectional view of an embodiment of the present invention intended for multi-core optical fibers.
図において複数の単心光フアイバ４間に高吸水
性連続長繊維３と補強用テンシヨンメンバ２がそ
れぞれ独立し、または混在して配され、これら複
数の単心光フアイバ４の外側にも高吸水性連続長
繊維３と補強用テンシヨンメンバ２が独立し、ま
たは混在して配される。そしてその外側に外被５
が被ぶせられる。 In the figure, highly water-absorbent continuous long fibers 3 and reinforcing tension members 2 are arranged between a plurality of single-core optical fibers 4, either independently or in a mixed manner. The water absorbent continuous long fibers 3 and the reinforcing tension member 2 are arranged independently or in a mixed manner. And on the outside there is a jacket 5
is covered.
この場合、ケーブル断面内での高吸水性連続長
繊維３と補強用テンシヨンメンバ２の断面比（占
積率）は透水性と引張強度の観点から高吸水性連
続長繊維の占積率を30〜70％とするのが適当であ
る。 In this case, the cross-sectional ratio (space factor) of the super-absorbent continuous filaments 3 and the reinforcing tension member 2 in the cross section of the cable is based on the space factor of the super-absorbent continuous filaments from the viewpoint of water permeability and tensile strength. It is appropriate to set it at 30 to 70%.
前記のように用いられる高吸水性連続長繊維の
例として、セルロース繊維にカルボン酸塩をグラ
フト重合して得られる吸水性能20〜50倍を示すセ
ルロース繊維があり、これを種々のサイズ、例え
ば400〜2000デニールに束ねて、所要本数をテン
シヨンメンバとともに光フアイバケーブル内に光
フアイバを包むように密に配するものである。こ
の種の吸水性繊維は引張強度として１〜10ｇ／デ
ニールをもつもので、それ自体テンシヨンメンバ
の働きを示す。 An example of the highly water-absorbent continuous fibers used as described above is cellulose fibers, which are obtained by graft polymerizing carboxylic acid salts to cellulose fibers and have a water absorption capacity of 20 to 50 times. The required number of optical fibers are bundled into ~2000 deniers and arranged closely together with a tension member so as to wrap the optical fibers within the optical fiber cable. This type of water-absorbing fiber has a tensile strength of 1 to 10 g/denier and itself functions as a tension member.
0.9mmφのナイロン被覆光フアイバ心の周囲に、
セルロース繊維にカルボン酸塩をグラフト重合し
て改質した吸水性能約50倍（ｇ−吸水量／ｇ−吸
水繊維）の吸水性繊維400デニールを８〜10本密
に縦添えし、その周囲にケブラ−繊維（商品名）
1420デニールを４〜６本配して最外層をPVCで
被覆した光フアイバケーブル（外径３mm）を試作
した。この透水性を調べるために更に、ケブラ−
繊維を入れない前述の吸水性連続長繊維だけで光
フアイバを包んだPVCケーブルを作り、これに
より約１ｍ長のサンプルを採取して垂直に保持
し、上部より水高約１ｍの水圧を与えるようにし
て注水して１時間保持した。
Around the 0.9mmφ nylon coated optical fiber core,
8 to 10 400-denier water-absorbing fibers with a water-absorbing performance of about 50 times (g-water absorption/g-water absorption fiber) modified by graft polymerization of a carboxylic acid salt to cellulose fibers are closely attached vertically, and the surrounding area is Kevlar fiber (product name)
We prototyped an optical fiber cable (outer diameter 3 mm) with 4 to 6 1420 denier fibers and the outermost layer covered with PVC. In order to investigate this water permeability, Kevlar
We made a PVC cable wrapped around an optical fiber using only the aforementioned water-absorbing continuous long fibers without adding any fibers, and used this to collect a sample approximately 1 m in length, hold it vertically, and apply water pressure from the top to a water height of approximately 1 m. Then, water was added and held for 1 hour.
その結果、下部よりの水の滴下はみられず、充
分防水機能を有することが判明した。なおこの防
水特性は吸水性連続長繊維の吸水能に依存する
が、種々評価したところでは、約20倍以上の吸水
能を示すもので光フアイバを充分密に包んでやれ
ば、前述の透水試験をパスすることがわかつた。 As a result, no water dripping from the bottom was observed, and it was found that the product had sufficient waterproof function. This waterproof property depends on the water absorption capacity of the water-absorbing continuous filament, but various evaluations have shown that it has a water absorption capacity of about 20 times or more, and if the optical fiber is wrapped tightly enough, it will not pass the water permeability test mentioned above. I found out that it passes.
以上説明したように、本考案によれば光フアイ
バの周囲を吸水性連続長繊維で包むことにより、
侵入した水が光フアイバに沿つて、その長手方向
に伝わることが防げ、しかも通常のドライケーブ
ルの形態で構成されるので、光フアイバの接続時
にも、ジエリー使用の場合のように、溶剤を使用
してのぬぐい去りも不要であり、作業性に優れて
いる。
As explained above, according to the present invention, by wrapping the optical fiber with water-absorbing continuous filaments,
This prevents intruding water from being transmitted along the length of the optical fiber, and since it is constructed in the form of a normal dry cable, it is no longer necessary to use a solvent when connecting the optical fiber, unlike when using jewelry. There is no need to wipe it off, and it has excellent workability.
第１図、第２図はそれぞれ本考案の実施例を示
す。
１……外被、２……補強用テンシヨンメンバ、
３……高吸水性連続長繊維、４……光フアイバ
（単心または複数心）。
FIG. 1 and FIG. 2 each show an embodiment of the present invention. 1... Outer covering, 2... Reinforcing tension member,
3...Super absorbent continuous long fiber, 4...Optical fiber (single core or multiple cores).
Claims (1)
に補強用テンシヨンメンバを配し、その最外層に
外被を施した光フアイバケーブルにおいて、吸水
率約20倍以上の高吸水性連続長繊維の、ケーブル
断面内での占積率を前記テンシヨンメンバと連続
長繊維に対し30〜70％にして、単心または複数の
光フアイバを包んでなる防水型光フアイバケーブ
ル。 Optical fiber cables include a single fiber or multiple optical fibers, a reinforcing tension member is placed around them, and a sheath is applied to the outermost layer. , a waterproof optical fiber cable comprising a single core or a plurality of optical fibers wrapped with a space factor in the cross section of the cable of 30 to 70% relative to the tension member and the continuous long fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2566684U JPS60140011U (en) | 1984-02-23 | 1984-02-23 | waterproof fiber optic cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2566684U JPS60140011U (en) | 1984-02-23 | 1984-02-23 | waterproof fiber optic cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60140011U JPS60140011U (en) | 1985-09-17 |
| JPH0143683Y2 true JPH0143683Y2 (en) | 1989-12-19 |
Family
ID=30520939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2566684U Granted JPS60140011U (en) | 1984-02-23 | 1984-02-23 | waterproof fiber optic cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60140011U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5866257B2 (en) * | 2012-05-29 | 2016-02-17 | 東亜建設工業株式会社 | Manufacturing method of concrete wet curing sheet |
| US10444460B2 (en) * | 2017-04-11 | 2019-10-15 | Ofs Fitel, Llc | Compact horizontal backbone cables for premises optical cabling applications |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS518137U (en) * | 1974-07-03 | 1976-01-21 |
-
1984
- 1984-02-23 JP JP2566684U patent/JPS60140011U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS518137U (en) * | 1974-07-03 | 1976-01-21 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60140011U (en) | 1985-09-17 |
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