JP2003066292A - Optical fiber cable - Google Patents
Optical fiber cableInfo
- Publication number
- JP2003066292A JP2003066292A JP2001258851A JP2001258851A JP2003066292A JP 2003066292 A JP2003066292 A JP 2003066292A JP 2001258851 A JP2001258851 A JP 2001258851A JP 2001258851 A JP2001258851 A JP 2001258851A JP 2003066292 A JP2003066292 A JP 2003066292A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- fiber cable
- twisted
- cable
- twist
- 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 42
- 239000000872 buffer Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000004804 winding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、光ファイバテープ
心線をケーブル化した光ファイバケーブルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber cable in which an optical fiber tape core wire is formed into a cable.
【0002】[0002]
【従来の技術】通信線路などに用いられる光ファイバケ
ーブルは、多数の光ファイバを集合させて、強度をもた
せた構造をしている。例えば図1に示すように、従来の
光ファイバケーブル1は、積層された複数の光ファイバ
テープ心線2を一方向に捻回し、前記光ファイバテープ
心線2の外周を一方向に捻回された緩衝体3(例えばプ
ラスチックヤーンなどの紐状物)で覆ったケーブルコア
と、該ケーブルコアの外側に配置された抗張力体4と
を、熱可塑性樹脂からなる外被5で被覆して形成されて
いる。2. Description of the Related Art An optical fiber cable used for a communication line or the like has a structure in which a large number of optical fibers are assembled to give strength. For example, as shown in FIG. 1, a conventional optical fiber cable 1 twists a plurality of laminated optical fiber tape core wires 2 in one direction and twists the outer circumference of the optical fiber tape core wires 2 in one direction. Formed by covering a cable core covered with a cushioning body 3 (for example, a string-like material such as a plastic yarn) and a tensile strength body 4 arranged outside the cable core with a jacket 5 made of a thermoplastic resin. ing.
【0003】[0003]
【発明が解決しようとする課題】上述の光ファイバケー
ブル1の製造には、複数の光ファイバテープ心線2を一
方向に捻回する集合機と、その外周に緩衝体3を一方向
に捻回する集合機とを要する。しかしながら、これら2
台の集合機はそれぞれ、送り出しおよび巻き取りドラム
を回転させるもので、製造設備費用が高くなるという問
題があった。In order to manufacture the above-mentioned optical fiber cable 1, a plurality of optical fiber ribbons 2 are twisted in one direction, and a buffer 3 is twisted in one direction on the outer periphery thereof. It requires a turning machine. However, these two
There is a problem in that the cost of manufacturing equipment increases because each of the gathering machines of the table rotates the sending and winding drums.
【0004】[0004]
【課題を解決するための手段】本発明は上記問題点を解
決すべくなされたもので、請求項1記載の発明ば、複数
本の光ファイバテープ心線の外周を緩衝体で覆ったケー
ブルコアと抗張力体とを外被で被覆してなる光ファイバ
ケーブルにおいて、前記光ファイバテープ心線はSZ撚
りに捻回されていることを特徴とするものである。ま
た、請求項2記載の発明は、請求項1記載の発明におい
て、前記緩衝体はSZ撚りに捻回されていることを特徴
とするものである。ここで、SZ撚りとは、長手方向に
撚り方向が右撚りと左撚りに周期的に変わる撚り方であ
る。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems. According to the invention of claim 1, a cable core in which the outer circumference of a plurality of optical fiber ribbons is covered with a buffer body. In an optical fiber cable in which the and the tensile strength member are covered with an outer jacket, the optical fiber ribbon is twisted into an SZ twist. The invention according to claim 2 is characterized in that, in the invention according to claim 1, the buffer body is twisted into an SZ twist. Here, the SZ twisting is a twisting method in which the twisting direction in the longitudinal direction periodically changes to right twisting and left twisting.
【0005】請求項1記載の発明によれば、複数本の光
ファイバテープ心線はSZ撚りに捻回されており、光フ
ァイバテープ心線の集合機は、回転を要しない送り出し
および巻き取りドラムと、中間で集合ダイスを左右に交
互回転させて撚りを与えるSZ反転機とからなる。した
がって、この集合機は、従来の一方向に捻回する(送り
出しおよび巻き取りドラムが回転する)集合機に比して
安価でり、製造設備費用が低下する。また、請求項2記
載の発明によれば、複数本の光ファイバテープ心線とそ
の外周上の緩衝体のいずれもSZ撚りに捻回されてお
り、したがって、いずれの集合機も、従来の一方向に捻
回する集合機に比して安価であり、製造設備費用が一層
低下する。According to the first aspect of the present invention, the plurality of optical fiber ribbons are twisted into the SZ twist, and the optical fiber ribbon assembling machine is a feeding and winding drum that does not require rotation. And an SZ reversing machine that alternately twists the assembly die to the left and right to impart twist. Therefore, this assembly machine is less expensive than a conventional assembly machine that twists in one direction (the delivery and take-up drum rotates), and the manufacturing equipment cost is reduced. Further, according to the invention of claim 2, all of the plurality of optical fiber ribbons and the buffers on the outer periphery thereof are twisted into SZ twists. It is cheaper than a collective machine that twists in the direction, and the manufacturing equipment cost is further reduced.
【0006】[0006]
【発明の実施の形態】以下、本発明にかかる光ファイバ
ケーブルの実施の形態を従来技術の説明に用いた図1に
より説明する。図1において、光ファイバケーブル1
は、積層された6本の4心光ファイバテープ心線2をS
Z撚りで捻回し、前記捻回された光ファイバテープ心線
2の外周を、緩衝体3で一方向に捻回して覆ったケーブ
ルコアと、該ケーブルコアの外側に配置された抗張力体
4と、前記ケーブルコアと抗張力体4とを被覆する熱可
塑性樹脂からなる外被5で構成されている。本実施形態
が従来例と異なる特徴的なことは、積層された光ファイ
バテープ心線2がSZ撚りで捻回していることである。
なお、本実施形態の横断面形状は、従来の光ファイバケ
ーブルの横断面形状と変わるところはない。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of an optical fiber cable according to the present invention will be described with reference to FIG. In FIG. 1, an optical fiber cable 1
Is a stack of six 4-fiber optical fiber ribbons 2
A cable core, which is twisted with a Z twist, and the outer circumference of the twisted optical fiber tape core wire 2 is twisted and covered in one direction by a buffer body 3, and a tensile strength member 4 disposed outside the cable core. The outer sheath 5 is made of a thermoplastic resin and covers the cable core and the strength member 4. This embodiment is different from the conventional example in that the laminated optical fiber ribbons 2 are twisted by SZ twist.
The cross-sectional shape of this embodiment is no different from the cross-sectional shape of the conventional optical fiber cable.
【0007】本実施形態は、回転を要しない送り出しお
よび巻き取りドラムと、中間で集合ダイスを左右に交互
回転させて撚りを与えるSZ反転機とからなる集合機を
用いて、光ファイバテープ心線2をSZ撚りで捻回する
ため、従来の一方向に捻回する集合機に比して、集合機
の設備費用が低下する。In this embodiment, an optical fiber ribbon is used by using an assembling machine including a feeding and winding drum that does not require rotation and an SZ reversing machine that alternately twists a collecting die in the middle to the left and right to provide twisting. Since 2 is twisted by SZ twist, the equipment cost of the gathering machine is lower than that of the conventional gathering machine twisted in one direction.
【0008】また、上記実施形態では、緩衝体3は一方
向に捻回されていたが、緩衝体3も光ファイバテープ心
線2と同様に、SZ撚りで捻回されていてもよい。その
場合、2台の集合機の設備費用がともに低下する。Further, in the above-mentioned embodiment, the buffer 3 is twisted in one direction, but the buffer 3 may be twisted by SZ twisting like the optical fiber ribbon 2. In that case, the equipment costs of the two aggregation machines are both reduced.
【0009】上記実施形態の光ファイバケーブル1につ
いて、伝送特性、機械特性、温度特性を評価したとこ
ろ、光ファイバテープ心線2の積層体および緩衝体3が
一方向撚りで捻回されている従来の光ファイバケーブル
に比して、遜色のない良好な結果を得ることができた。When the transmission characteristics, mechanical characteristics, and temperature characteristics of the optical fiber cable 1 of the above-mentioned embodiment were evaluated, it was found that the laminated body of the optical fiber tape core wire 2 and the buffer body 3 were twisted by unidirectional twisting. It was possible to obtain good results comparable to those of the optical fiber cable of.
【0010】なお、本発明は上記実施形態に限定される
ことなく、例えば、抗張力体4の本数は2本以外でもよ
く、また、光ファイバテープ心線2の積層体は複数本で
もよい。The present invention is not limited to the above embodiment, and for example, the number of tensile strength members 4 may be other than two, and the number of laminated members of the optical fiber ribbon 2 may be plural.
【0011】[0011]
【発明の効果】以上説明したように請求項1記載の発明
によれば、光ファイバテープ心線はSZ撚りに捻回され
ているため、従来の一方向に捻回されている場合に比し
て、製造設備費用が低下するという優れた効果がある。
また、請求項2記載の発明によれば、光ファイバテープ
心線と緩衝体のいずれもがSZ撚りに捻回されているた
め、製造設備費用が一層低下するという優れた効果があ
る。As described above, according to the first aspect of the present invention, the optical fiber ribbon is twisted in the SZ twist, and therefore, compared with the conventional twist in one direction. Therefore, there is an excellent effect that the manufacturing equipment cost is reduced.
According to the second aspect of the present invention, since both the optical fiber ribbon and the buffer body are twisted into the SZ twist, there is an excellent effect that the manufacturing equipment cost is further reduced.
【図1】光ファイバケーブルの断面図である。FIG. 1 is a cross-sectional view of an optical fiber cable.
1 光ファイバケーブル 2 光ファイバテープ心線 3 緩衝体 4 抗張力体 5 外被 1 optical fiber cable 2 Optical fiber ribbon 3 buffer 4 Strength member 5 jacket
Claims (2)
緩衝体で覆ったケーブルコアと抗張力体とを外被で被覆
してなる光ファイバケーブルにおいて、前記光ファイバ
テープ心線はSZ撚りに捻回されていることを特徴とす
る光ファイバケーブル。1. An optical fiber cable comprising a cable core having a plurality of optical fiber ribbons coated with a buffer material on the outer periphery thereof and a tensile strength body coated with a jacket, wherein the optical fiber ribbons are SZ twisted. An optical fiber cable characterized by being twisted.
ことを特徴とする請求項1記載の光ファイバケーブル。2. The optical fiber cable according to claim 1, wherein the buffer body is twisted into an SZ twist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001258851A JP2003066292A (en) | 2001-08-29 | 2001-08-29 | Optical fiber cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001258851A JP2003066292A (en) | 2001-08-29 | 2001-08-29 | Optical fiber cable |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2003066292A true JP2003066292A (en) | 2003-03-05 |
Family
ID=19086304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001258851A Pending JP2003066292A (en) | 2001-08-29 | 2001-08-29 | Optical fiber cable |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2003066292A (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58217445A (en) * | 1982-06-10 | 1983-12-17 | Nippon Telegr & Teleph Corp <Ntt> | Method and device for producing optical fiber cable |
JPS61101916A (en) * | 1984-10-23 | 1986-05-20 | 住友電気工業株式会社 | Manufacture of multilayer taped-like cable |
JPH0279008A (en) * | 1988-09-14 | 1990-03-19 | Furukawa Electric Co Ltd:The | Production of optical fiber cable |
JPH11295570A (en) * | 1998-04-10 | 1999-10-29 | Furukawa Electric Co Ltd:The | Optical fiber cable |
JP2001194567A (en) * | 2000-01-11 | 2001-07-19 | Sumitomo Electric Ind Ltd | Optical fiber cable |
JP2001201675A (en) * | 2000-01-17 | 2001-07-27 | Furukawa Electric Co Ltd:The | Optical fiber cable |
-
2001
- 2001-08-29 JP JP2001258851A patent/JP2003066292A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58217445A (en) * | 1982-06-10 | 1983-12-17 | Nippon Telegr & Teleph Corp <Ntt> | Method and device for producing optical fiber cable |
JPS61101916A (en) * | 1984-10-23 | 1986-05-20 | 住友電気工業株式会社 | Manufacture of multilayer taped-like cable |
JPH0279008A (en) * | 1988-09-14 | 1990-03-19 | Furukawa Electric Co Ltd:The | Production of optical fiber cable |
JPH11295570A (en) * | 1998-04-10 | 1999-10-29 | Furukawa Electric Co Ltd:The | Optical fiber cable |
JP2001194567A (en) * | 2000-01-11 | 2001-07-19 | Sumitomo Electric Ind Ltd | Optical fiber cable |
JP2001201675A (en) * | 2000-01-17 | 2001-07-27 | Furukawa Electric Co Ltd:The | Optical fiber cable |
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Legal Events
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Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20080701 |
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