JP3773584B2 - Fiber optic tape cable - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical fiber tape cable in which a plurality of optical fiber strands are arranged in parallel.
[0002]
[Prior art]
Conventionally, in this type of optical fiber tape, the outer layer is formed in a fixed state so that a plurality of optical fiber strands are arranged in parallel.
[0003]
[Problems to be solved by the invention]
Conventional fiber optic tape has a fixed outer layer of a plurality of optical fiber strands, so there is no problem with wiring in a straight line state. There was a drawback of increasing optical loss.
[0004]
In view of the above-described conventional drawbacks, the present invention is an optical fiber tape cable that is easy to wire and can prevent a large force from being applied to the optical fiber during wiring, and can efficiently prevent optical loss of the optical fiber. The purpose is to provide.
[0005]
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.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides an optical fiber cable body formed by S-twisting, Z-twisting or SZ-twisting a plurality of optical fiber tapes in which adjacent outer layers of a plurality of parallel optical fiber strands are fixed at a predetermined interval. And the optical fiber tape cable is comprised by the protective layer which covers the outer peripheral part of this optical fiber cable main body.
[0007]
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
[0009]
In the first embodiment of the present invention shown in FIGS. 1 to 4, reference numeral 1 denotes an optical fiber tape of the present invention, and this optical fiber tape 1 includes a plurality of parallel optical fibers, in this embodiment, eight optical fiber strands 2, Fix two, two, two, two, two, two and the eight parallel optical fiber strands 2, 2, 2, 2, 2, 2, 2, 2 using a laminate material at predetermined intervals. And the aligned portion 3.
[0010]
The optical fiber 2 includes an optical fiber 4, an ultraviolet curable resin layer 5 that covers the outer periphery of the optical fiber 4, a first coating layer 6 that covers the outer periphery of the ultraviolet curable resin layer 5, and the first coating layer. 6 is a flexible thermoplastic resin having a Young's modulus of 5 to 100 N / mm2, such as polyvinyl chloride. The second coating layer 7 is made of a semi-cured or cured thermoplastic resin having a Young's modulus of 200 to 500 N / mm2, such as polyvinyl chloride.
The optical fiber 2 may have a simple structure constituted by an optical fiber 4 and an ultraviolet curable resin layer 5 covering the outer periphery of the optical fiber 4.
[0011]
As shown in FIG. 3, the optical fiber tape 1 having the above configuration has eight optical fiber strands 2, 2, 2, 2, 2, 2, 2 fixed in a parallel state at the alignment unit 3. As shown in FIG. 4, the eight optical fiber strands 2, 2, 2, 2, 2, 2, 2 between 3 are in a parallel state without being fixed. Make the necessary wiring.
[0012]
Different Embodiments of the Invention
Next, different embodiments of the present invention shown in FIGS. 5 to 28 will be described. In the description of the different embodiments of the present invention, the same components as those in the first embodiment of the present invention are denoted by the same reference numerals, and redundant description is omitted.
[0013]
In the second embodiment of the present invention shown in FIGS. 5 to 8, the main difference from the first embodiment of the present invention is a plurality, and in this embodiment, eight optical fiber strands 2, 2 are used. 2, 2, 2, 2, 2 is configured in this way in that it uses an alignment portion 3 A that is fixed using a laminate material at a predetermined interval so as to form parallel gaps 9, 9. Even in the case of the optical fiber tape 1A, the same effects as those of the first embodiment of the present invention can be obtained.
[0014]
In the third embodiment of the present invention shown in FIGS. 9 to 12, the main difference from the first embodiment of the present invention is that eight optical fiber strands 2, 2, 2, 2, The optical fiber tape 1B constructed in this way is used in the first embodiment of the present invention in that it uses the alignment portion 3B in which 2, 2, 2, 2 are fixed at predetermined intervals using the laminate sheets 10, 10. The same effect as the form can be obtained.
[0015]
The fourth embodiment of the present invention shown in FIGS. 13 to 16 is mainly different from the first embodiment of the present invention in that eight optical fiber strands 2, 2, 2, 2, Even if the optical fiber heart tape 1C configured in this way is used, the optical fiber her tape 1C of the present invention is used in that the alignment portion 3C is used in which 2, 2, 2, 2 are fixed at predetermined intervals using an adhesive or welding. The same effect as the embodiment can be obtained.
[0016]
In the fifth embodiment of the present invention shown in FIGS. 17 to 20, the main difference from the first embodiment of the present invention is that one tension member 11 is interposed in the central portion. In the optical fiber tape 1D configured in this way, the same effects as those of the first embodiment of the present invention can be obtained in that the alignment portions 3D that are arranged in parallel and fixed at a predetermined interval are formed.
In addition, the tension member 11 may be arrange | positioned at both sides as needed, and the number to be used can also be used according to the intended purpose.
[0017]
The sixth embodiment of the present invention shown in FIGS. 21 to 23 is an S twist, Z twist or SZ twist capable of accommodating a plurality of optical fiber tapes 1 according to the first embodiment of the present invention. A plurality of tape storage grooves 16 formed in the state are stored in a plurality of slot rods 17 formed in the outer peripheral portion, in this embodiment, four, and the outer peripheral portion is covered with the tape 12, and then the outer periphery of the tape 12 is covered. The optical fiber tape cable 15 configured as described above may be used.
[0018]
24 to 26, the seventh embodiment of the present invention is mainly different from the sixth embodiment of the present invention in that five optical fiber tapes 1, 1, 1, 1, 1 are stored in tape storage grooves 16, 16, 16, 16, 16 formed in S-twisted, Z-twisted or SZ-twisted state, and stored in pipe 18 to protect the outer periphery. Even in the optical fiber tape cable 15A configured as described above, the same effect as that of the sixth embodiment of the present invention can be obtained in that the layer 14 is covered.
[0019]
In the eighth embodiment of the present invention shown in FIG. 27, the main difference from the seventh embodiment of the present invention is that the inner periphery of the pipe 18 whose outer periphery is covered with a protective layer or the like as required. The five optical fiber tapes 1, 1, 1, 1, 1 are S-twisted, Z-twisted or SZ-twisted on the surface and fixed with an adhesive so that the optical fiber tape cable 15B configured in this way is obtained. Thus, the space in the pipe 18 can be used when the optical fiber tape 1 is attached to the pipe 18, so that the operation can be easily performed.
[0020]
In the ninth embodiment of the present invention shown in FIG. 28, the main difference from the fourth embodiment of the present invention is that four parallel optical fiber strands 2, 2, 2, 2 are connected with an adhesive or The optical fiber heart tape 1E formed in this manner is not non-woven in that the optical fiber heart tape 1E is formed so that the alignment portion 3C fixed by welding and the non-alignment portion have substantially the same length. Both ends of the non-aligned part are cut so that the aligned part remains, and the optical fiber wires 2, 2, 2, 2 of one non-aligned part are respectively covered with the reinforcing tube 19, and the connector of the connector fitting member 20 is attached to the tip part. Attaching the connector 22 to be fitted to the fitting portion 21, and covering the alignment portion 3C and the non-alignment portion up to the optical fiber strands 2, 2, 2, 2 near the tip of the other non-alignment portion with a reinforcing tube 23, Guide pins 24, 24 at the tip It can be used connector 25 connected by determined state as connectors for optical fibers hard tape 1E is attached.
[0021]
In the above-described embodiment of the optical fiber tape of the present invention, the one using eight or four optical fiber strands 2 has been described. However, the present invention is not limited to this, and a plurality of two, 12, 16, etc. An optical fiber may be used.
[0022]
【The invention's effect】
As is clear from the above description, the present invention has the following effects.
[0023]
(1) An optical fiber cable body formed by S-twisting, Z-twisting or SZ-twisting a plurality of optical fiber tapes in which adjacent outer layers of a plurality of parallel optical fiber strands are fixed at a predetermined interval, and an outer periphery of the optical fiber cable body Since the optical fiber strands arranged in parallel between the aligned portions are independent, the shining can be easily and easily performed at the time of wiring.
Therefore, since stress or load more than necessary is not applied to the optical fiber at the time of the fin wiring, it is possible to efficiently prevent the optical loss of the optical fiber from increasing.
[0024]
(2) According to the above (1), a plurality of optical fiber strands can be reliably held in a parallel state by the alignment portions formed at predetermined intervals.
Therefore, handling is easy and can be performed easily.
[0025]
(3) According to the above (1), since the structure is simple, it can be easily manufactured.
[0026]
(4) In claim 2, the same effects as in the above (1) to (3) can be obtained.
[Brief description of the drawings]
FIG. 1 is a plan view of a first embodiment of the present invention.
FIG. 2 is a front view of the first embodiment of the present invention.
3 is an enlarged cross-sectional view taken along line 3-3 in FIG.
4 is an enlarged cross-sectional view taken along line 4-4 of FIG.
FIG. 5 is a plan view of a second embodiment of the present invention.
FIG. 6 is a front view of a second embodiment of the present invention.
7 is an enlarged cross-sectional view taken along line 7-7 in FIG.
8 is an enlarged sectional view taken along line 8-8 in FIG.
FIG. 9 is a plan view of a third embodiment of the present invention.
FIG. 10 is a front view of a third embodiment of the present invention.
11 is an enlarged sectional view taken along line 11-11 in FIG. 9;
12 is an enlarged sectional view taken along line 12-12 of FIG.
FIG. 13 is a plan view of a fourth embodiment of the present invention.
FIG. 14 is a front view of a fourth embodiment of the present invention.
15 is an enlarged cross-sectional view taken along the line 15-15 in FIG.
16 is an enlarged cross-sectional view taken along the line 16-16 in FIG.
FIG. 17 is a plan view of a fifth embodiment of the present invention.
FIG. 18 is a front view of a fifth embodiment of the present invention.
FIG. 19 is an enlarged cross-sectional view taken along line 19-19 of FIG.
20 is an enlarged sectional view taken along 20-20 in FIG.
FIG. 21 is a plan view of a sixth embodiment of the present invention.
FIG. 22 is a front view of a sixth embodiment of the present invention.
FIG. 23 is an enlarged cross-sectional view of a main part taken along the line 23-23 in FIG.
FIG. 24 is a plan view of a seventh embodiment of the present invention.
FIG. 25 is a front view of a seventh embodiment of the present invention.
26 is an essential part enlarged cross-sectional view taken along the line 26-26 in FIG. 24;
FIG. 27 is an explanatory diagram of an eighth embodiment of the present invention.
FIG. 28 is an explanatory diagram of a ninth embodiment of the present invention.
[Explanation of symbols]
1, 1A, 1B, 1C, 1D, 1E: optical fiber tape,
2: Fiber optic wire,
3, 3A, 3B, 3C, 3D: alignment part,
4: Optical fiber, 5: UV curable resin layer,
6: 1st coating layer, 7: 2nd coating layer,
8: coating layer, 9: gap
10: Laminate sheet, 11: Tension member,
12: Tape,
14, 14A: protective layer,
15, 15A: optical fiber tape cable,
16: Tape storage groove 17, 17A: Slot rod,
18: Pipe, 19: Reinforcement tube,
20: Connector fitting member, 21: Connector fitting part,
22: Connector, 23: Reinforcement tube,
24: Guide pin, 25: Connector.

Claims (2)

  Covers an optical fiber cable body formed by S-twisting, Z-twisting or SZ-twisting a plurality of optical fiber tapes in which adjacent outer layers of a plurality of parallel optical fiber strands are fixed at a predetermined interval, and an outer periphery of the optical fiber cable body An optical fiber tape cable comprising a protective layer.   An optical fiber cable body formed by arranging a plurality of optical fiber tapes in which a plurality of optical fiber strands and at least one tension member are arranged in parallel and adjacent outer layers are fixed at a predetermined interval by S twisting, Z twisting or SZ twisting, An optical fiber tape cable comprising a protective layer covering an outer periphery of an optical fiber cable body.

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