JPS6051809A - Fire-proof optical fiber - Google Patents
Fire-proof optical fiberInfo
- Publication number
- JPS6051809A JPS6051809A JP58160046A JP16004683A JPS6051809A JP S6051809 A JPS6051809 A JP S6051809A JP 58160046 A JP58160046 A JP 58160046A JP 16004683 A JP16004683 A JP 16004683A JP S6051809 A JPS6051809 A JP S6051809A
- Authority
- JP
- Japan
- Prior art keywords
- tubular body
- fire
- optical fiber
- gas
- 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
- 239000013307 optical fiber Substances 0.000 title claims abstract description 26
- 230000003287 optical effect Effects 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 10
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 33
- 229910052751 metal Inorganic materials 0.000 claims description 33
- 230000009970 fire resistant effect Effects 0.000 claims description 12
- 239000011241 protective layer Substances 0.000 claims description 9
- 239000011253 protective coating Substances 0.000 claims description 8
- 230000035515 penetration Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000003365 glass fiber Substances 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 16
- 239000000835 fiber Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4436—Heat resistant
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
Description
【発明の詳細な説明】
〔技術分野Ｊ
本発明は、ＪＩＳ−Ａ−１３０４に定める火災温度曲線
に準じて３０分間に温度を８ｊＯ”Ｃまで−にげて加熱
しても、その間の通信が確保できるようにした耐火光ケ
ーブルに関するものである。[Detailed Description of the Invention] [Technical Field J] The present invention provides a method for preventing communication during heating even if the temperature is reduced to 8jO"C in 30 minutes in accordance with the fire temperature curve specified in JIS-A-1304. This relates to fire-resistant optical cables that can be secured.
（従来技術〕
本発明者は、第１図に示すように金属層状体１内に光フ
アイバ心線２を収容した光クープルについて耐火性の実
験をした。この場合、光フアイバ心線２としては、通常
使用されている光ファイバ３の外周にナイロン等の熱可
塑性樹脂よりなる保護被覆４を設けたものを用いた。(Prior Art) The present inventor conducted a fire resistance experiment on an optical couple in which a coated optical fiber 2 was housed in a metal layered body 1 as shown in FIG. A commonly used optical fiber 3 in which a protective coating 4 made of a thermoplastic resin such as nylon was provided around the outer periphery was used.
このよう１．ｆ光ケーブルのある箇所を部分的に約８４
０℃で加熱したところ、その加熱箇所に２ｊ応した位置
の熱可塑性樹脂からなる保護破誓４は融けて樹脂のがた
まり＝Ｉ Ａ、−ｊ Ａとなって金属管状体ｉ内を塞い
た。その結果塞がれた部分の間のガス圧が上がり最悪の
場合、金属管状体１か破裂し、その際に光ファイバ、３
が破断されることもあった。さらに、光ファイバ：３が
破断ぜずとも加熱を始めてから１３０分後の伝送損失の
増加が約１．０２ｄ１３ もあることがわかった。Like this 1. Partially the part where the f optical cable is about 84
When heated at 0°C, the protective seal 4 made of thermoplastic resin at the heated location 2j melted and formed a resin clump = I A, -j A, which blocked the inside of the metal tubular body i. . As a result, the gas pressure between the blocked parts increases, and in the worst case, the metal tubular body 1 ruptures, and in that case, the optical fiber 3
was sometimes broken. Furthermore, it was found that the transmission loss increased by about 1.02d13 130 minutes after heating started even though the optical fiber 3 did not break.
前記光ケーブルの他に、最近耐火光ケーブルとして、光
ファイバをガラス繊維だけで保護して金属パイプ内に収
容したものも提案されているが、このような耐火光ケー
ブルは切断や接続時等の取扱いがめんどうであるという
欠点かあつ ブこ 。In addition to the above-mentioned optical cables, fire-resistant optical cables in which optical fibers are protected only by glass fibers and housed in metal pipes have recently been proposed, but such fire-resistant optical cables are difficult to handle when cutting or connecting. The drawback is that it is.
前記問題に鑑み本発明の目的は、１１火性能に優れ、か
つ取扱いが容易な耐火光ケーブルを提供することにある
。In view of the above problems, it is an object of the present invention to provide a fire-resistant optical cable that has excellent fire resistance and is easy to handle.
前記目的を達成すべく本発明の第１発明の耐火光ケーブ
ルは、保護層０を有−１−る尤ファイバ心線と、加熱を
受けたとき内部のガスを解放することのできる１１通部
を有し、前記光ファイ・・ノＬ・線を収容する金属管状
体とからなるものでル。In order to achieve the above object, the fireproof optical cable of the first aspect of the present invention includes a fiber core having a protective layer 0 and 11 through which internal gas can be released when heated. and a metal tubular body for accommodating the optical fiber.
す、第２発明の耐火光ケーブルは、保護破切を有する尤
ファイバ・し・線と、加熱を受けたとき内部のガスを解
放することの・できる貫通部を有し、ｎｆｆ記光ファイ
バ心線を収容する金属管状体と、該金属管状体の外周に
設けられ、前記ガスの解放を阻害しない樹脂からなる保
護層とからなるものである。The fire-resistant optical cable of the second invention has a fiber wire having a protective break and a penetration part capable of releasing internal gas when heated, and has an optical fiber core wire according to NFF. A protective layer is provided around the outer periphery of the metal tubular body and is made of a resin that does not inhibit the release of the gas.
１発明の実施例〕 本発明の実施例を図を参照して詳細に）ｒＢべろ。1 Example of the invention] Examples of the present invention will be described in detail with reference to the drawings).
第２図は本発明の第１発明の一実施例の多１祝図である
。第２図が示すように第１発明の耐火光ケープ／Ｌは、
管壁に内面と外面を貫通する複数の内部ガスＩＱ’ｒ放
用の貫通孔１０を有する金属管状体１の内部に光ファイ
バ３にガラス繊維強化熱硬化性樹脂からなる保護被覆４
を破粒ぜしめた光フアイバ心線２を収容したものである
１、ここで前記金属管状体１は予め複数のｊ′Ｊ通孔１
゜を有する金属条を管状に成形し、その合せ目を溶接し
たものてもよいし、溶接しないものでもよい。但し、前
記金属管状体１に槻（成約強度を必要とする場合は溶接
した方がＩｆましい。また単に前記貫通孔１０を有する
金属条を丸めて端部を重ね合せて作ったものでもよい。FIG. 2 is a multi-day drawing of an embodiment of the first invention of the present invention. As shown in FIG. 2, the fireproof light cape/L of the first invention is
A protective coating 4 made of glass fiber-reinforced thermosetting resin is attached to an optical fiber 3 inside a metal tubular body 1 having a plurality of through holes 10 for discharging internal gas IQ'r passing through the inner and outer surfaces of the tube wall.
The metal tubular body 1 has a plurality of j'J through holes 1 in advance.
It may be formed by forming a metal strip having an angle into a tubular shape and welding the seams, or it may not be welded. However, it is preferable to weld the metal tubular body 1 to the metal tubular body 1 (if construction strength is required).Also, it may be made by simply rolling the metal strip having the through hole 10 and overlapping the ends. .
また、金属条の合せ目を溶接しない場合、ｋ）るいは単
に端部を重ね合せたものにあっては、該合せ目あるいは
重ね合せ部より内部ガスを外ｉ′τ１１に解放すること
ができるので第２図に示した」、うな貫通孔１０を設け
ずどもよい。いうまでもないことであるが、この場合前
記合せ目あるいは毛ね合せ部が接着されていてはならな
い。さらに前記金属管状体１に波伺を施すと可撓性が向
−４ニするため、この耐火光ケーブルを配線したり、あ
るいは複数本撚り合せて太いケーブルとする場合有利で
ある。In addition, if the joints of metal strips are not welded, or if the ends are simply overlapped, internal gas can be released to the outside from the joints or overlapped parts. Therefore, it is not necessary to provide the through hole 10 shown in FIG. Needless to say, in this case, the seams or bristles must not be glued together. Further, when the metal tubular body 1 is corrugated, its flexibility increases by -4, which is advantageous when wiring this fireproof optical cable or twisting a plurality of cables together to form a thick cable.
第２図のものは１本の光フアイバ心線２しか収容してい
ないが複数本であっても、Ｊいし、庄た金属製絶Ｈ導体
との複合集合体てあ−）ても、］−い。The one in Figure 2 accommodates only one optical fiber core 2, but even if there are multiple optical fibers, or if it is a composite assembly with a J or a metal conductor, - Yes.
第、３図、第４図は本発明の第２発明の一実施例及び他
の実施例を示す。第：３図か示す、Ｌ′）に第２発明の
１制火光り′−プルは、内部にＦＭ数本の光フアイバ心
線２の集合体５を収容した第２図に示ずよ５な貫通孔１
０を有する金属管状体１の外周に、高温にさらされたら
気化したり等する樹脂よりなる保護層６を被覆したもの
でｋ）る。3 and 4 show one embodiment of the second invention and other embodiments of the present invention. Figure 3: The first fire control light pull of the second invention is shown in Figure 3 (L'), which houses an assembly 5 of several FM optical fibers 2 inside. Through hole 1
The outer periphery of a metal tubular body 1 having a 0.0 temperature is coated with a protective layer 6 made of a resin that evaporates when exposed to high temperatures.
この保護層６はケーブルが部分的に８ 、Ｉ ｏ ”ｃ
、： Ｖｔ二加熱されたとき、溶けたり、気化したり等
して金属管状体１の内部から貫通孔１０を通し−（外部
へ逃げ、１−うど−Ｊ−るガスの解放を阻害しプｊ（・
ものである。また第４図は第２図のような貫通孔１０を
設けていない金属条を重ね合せ部１１を有するように丸
め−（金属管状体１としたものである。This protective layer 6 covers the cable partially 8, I o ”c
,: Vt2 When heated, it melts, vaporizes, etc. and escapes from the inside of the metal tubular body 1 through the through hole 10 to the outside, inhibiting the release of the gas. j(・
It is something. In addition, FIG. 4 shows a metal strip 1 without a through hole 10 as shown in FIG. 2 rolled up so as to have an overlapping portion 11.
この場合重ね合せ部１１は金属条同志か接着されていな
いので加熱されて金属管状体１の内部のガス圧が」二が
ると内部のガスはこの市ね合せ部１１かも逃げだすこと
ができる。In this case, since the metal strips are not bonded to each other in the overlapped portion 11, when the gas pressure inside the metal tubular body 1 decreases due to heating, the internal gas can also escape from the overlapped portion 11.
尚、九−ノアイバ３の保護被り４＋、Ｉノーｊロン等の
熱呵’ｊＮｊ ＋’ｌ樹脂て、（りつ−（も、ｌ、いが
、この場合は８４０ ”（ＩＦ加熱されイ、と多：Ｉニ
ーの分ＩＷガスを発生すイ、のて′ｌ” ｈ戊′１５′
状体１の内部ガス圧力か十かり易い１、そこて第２図で
説明した、１、うにカラス繊オイ１ｄｒ＋ｉ （ｌ善り
（硬化性樹脂で保護被覆４を形成すると５常ｉ！ｌｌ’
ｌての保１穫効果か大ぎいだし］−でなく高温下にあっ
ても１．二の保護被覆４はガラス繊灯１を多く含んでい
一〇分解ガスを発生する樹脂−［１：が比較的少１．仁
いので内部のガス圧上夕（は少なくて済むので好ましい
。また金属管状体１０拐質としてはステンレス等の鉄系
のものが１制熱性に優れているので好ましい。In addition, the protective cover of 9-Noaiba 3 is 4+, and the heat-resistant resin such as INOJ-Ron is 840 '' (IF heated, Multi: Generate IW gas for I knee.
The internal gas pressure of the shaped body 1 is easy to rise. Therefore, as explained in FIG.
1. Even under high temperatures, it has a great effect on all crops. The second protective coating 4 contains a large amount of glass fiber lamp 1, and has a relatively small amount of resin that generates decomposition gas. It is preferable because it is thin and requires less internal gas pressure. Also, as the material of the metal tubular body 10, iron-based materials such as stainless steel are preferable because they have excellent heat control properties.
このような本発明の耐火光ケーブルにあってはｓ ４
（１”（：に加熱されても金属管状体内部の分解ガスを
含めたガスは、１）１■記管状体の１゛１通部を通して
外部へ容易に解放さＪするので金属管状体内部のガス圧
か異常に上昇することはない。よって金属管状体が破裂
したり、光ファイノ（が破断することもない。また本発
明によれば光ファイバの伝送損失の増加はごくわ１゛か
てＡするいさら（（二本発明のものけ光ファイバの保護
被覆としてガラス繊維を用いたものも７］でシているか
、−ｒ）１にガラス繊維だけからなるものてはｌ：Ｉ：
＜熱硬化性樹脂にＪ、′）で固めであるため、カラ７、
繊眉１だりからなるものより取扱いか容易である。In such a fireproof optical cable of the present invention, s4
Even if heated to 1" (:), the gases inside the metal tubular body, including the decomposed gas, are easily released to the outside through the 1"1 passage of the tubular body described in 1). The gas pressure of the optical fiber will not rise abnormally.Therefore, the metal tubular body will not rupture or the optical fiber will not break.Furthermore, according to the present invention, the increase in transmission loss of the optical fiber will be negligible. In addition, ((2) The optical fiber of the present invention using glass fiber as a protective coating is also shown in 7], -r) 1. In the case of using only glass fiber, l:I:
<J,') is hardened with thermosetting resin, so color 7,
It is easier to handle than one consisting of only one thin eyebrow.
尚、本発明の第１発明である金属管状体の外周に保護被
覆を有しない耐火光ケーブルは、どちらかというと該耐
火光ケーブルを他の電力線等と複合して用いたり、ある
いは複数本撚り合せてさらに太いケーブルとしその外周
に保護層を設けるものに適し、前記金属管状体の外周に
保護層を設し］た第２発明はそのもの自身１１’、＋体
で使用−４る場合とか、湿気の多い場所で使う場合に適
し２ているが、この使用法に限定されるものではｉｃ
Ｉ、−、。Incidentally, the first invention of the present invention, which is a fire-resistant optical cable that does not have a protective coating on the outer periphery of the metal tubular body, is more likely to be used in combination with other power lines, etc., or by twisting a plurality of cables together. Furthermore, the second invention is suitable for a thick cable and a protective layer is provided on the outer periphery of the metal tubular body, and the second invention is suitable for use in cases where the protective layer is provided on the outer periphery of the metal tubular body. IC is suitable for use in many places, but is not limited to this usage.
I,-,.
１発明の効果１
以上述べた７１：うに本発明の耐火光ケーブルは耐熱性
に優れかつ接続時等の取扱いか容易でル）る。1 Effect of the Invention 1 As stated above, the fire-resistant optical cable of the present invention has excellent heat resistance and is easy to handle during connection.
４ し１而の筒中な説明
第１１ノｌ＆ｊ従来の九ケーブルか加かノーを受けたと
きの状態を示ず４断面図、第２図ｉｔ一本発明の第１発
明の一実施例を示すｊ゛・１祝図、第３図は本発明の第
２発明の一実施例を示４−断面図、第４図１、よ同じく
第２発明の別の実施例を示−・ｊ断面図である。4 Detailed explanation of the present invention No. 11 No. 1 & j No. 4 sectional view showing the state when the conventional nine cables are applied or not, and Fig. 2 shows an embodiment of the first invention of the present invention. Figure 3 shows one embodiment of the second invention of the present invention, and Figure 41 shows another embodiment of the second invention. It is.
１ 金属管状体、２・光フアイバ心線、３・・尤ファイ
バ、４−保護被覆、５ 光ファイバ尼・線の集合体、６
・保護層、Ｉ Ｏ−ｊ！４通孔、１１・重ね合せ部。1 Metal tubular body, 2. Optical fiber core wire, 3.. fiber, 4. protective coating, 5. optical fiber wire, 6.
・Protective layer, I O-j! 4 holes, 11 overlapping parts.
Claims (5)
たどき内部のガスを解放することのできる貫通部を有し
、前記光フアイバ心線を収 ：容する金属管状体とから
なることを特徴とする耐火光ケーブル。(1) Consists of a cored optical fiber having a protective layer ω, and a metal tubular body that houses the cored optical fiber and has a penetration part that can release internal gas when heated. A fire-resistant optical cable characterized by:
する複数の貫通孔であることを特徴とする特許請求の範
囲第１項記載の耐火光ケーブル。(2) The fire-resistant optical cable according to claim 1, wherein the penetration portion is a plurality of through holes passing through the inner and outer surfaces of the metal tubular body.
であることを特徴とする特許請求の範囲第１項記載の耐
火光ケーブル。(3) The fire-resistant optical cable according to claim 1, wherein the penetrating portion is a metal strip-shaped portion of the metal elongated body.
らなることを特徴とする特許請求の範囲第１項記載耐火
光ケーブル。(4) The fire-resistant optical cable according to claim 1, wherein the protective coating is made of a glass fiber-reinforced thermosetting resin.
たとき内部のガスを解放することのできる貫通部を有し
、前記光ファイバ、シ・線を収容する金属管状体と、該
金属管状体の外周ｋＣ設けられ、前記ガスの解放を阻害
しない樹脂からなる保護層とからなることを特徴とする
耐火光ケーブル。(5) An optical fiber core wire having a protective coating, a metal tubular body having a penetration part capable of releasing internal gas when heated and housing the optical fiber or wire, and the metal A fire-resistant optical cable characterized by comprising a protective layer formed on the outer circumference of the tubular body and made of a resin that does not inhibit the release of the gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58160046A JPS6051809A (en) | 1983-08-31 | 1983-08-31 | Fire-proof optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58160046A JPS6051809A (en) | 1983-08-31 | 1983-08-31 | Fire-proof optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6051809A true JPS6051809A (en) | 1985-03-23 |
Family
ID=15706748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58160046A Pending JPS6051809A (en) | 1983-08-31 | 1983-08-31 | Fire-proof optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6051809A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE36790E (en) * | 1988-08-01 | 2000-07-25 | Jincks; Danny C. | Multicolor emergency vehicle light |
-
1983
- 1983-08-31 JP JP58160046A patent/JPS6051809A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE36790E (en) * | 1988-08-01 | 2000-07-25 | Jincks; Danny C. | Multicolor emergency vehicle light |
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