JP2003322727A - Cable, with connector attached thereto and wire- inserting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical fiber that facilitates insertion of a cable without damaging a cable-constituting material, by fitting a reinforcing tube-mounted connector to the tip end of an indoor cable suitable for floor wiring and by connecting a sleeve holder and an untwisting piece to the tip end of the connector. <P>SOLUTION: This is an optical fiber cable (1) with a connector assembled at the tip end, having a drawing end (10) in which an attachable/detachable sleeve holder (3), fitted to the lock portion (2a) of the connector (2), is detachably connected to a wire-inserting tool. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber cable and a cord used for advanced information communication in a building or a home.

[0002]

2. Description of the Related Art In recent years, the construction of optical subscriber line networks has progressed, and optical cables and optical cords have come to be used on the floors of office buildings. In this case, in the premises wiring, each floor in the building is vertically connected by a trunk premises cable, terminated in a cabinet on each floor, and connected to a floor wiring cable (indoor cable) in the cabinet. And
This floor wiring cable is connected to the optical cord with a connector on one end in the optical rosette, and ONU (Optical Network
Unit) and media converters and other optical terminal equipment were connected by connectors.

The concept of laying an optical cable on each floor of the office building as described above and further bringing an optical fiber to the periphery of each person's personal computer (F
In order to realize TTD (Fiber To The Desktop), many wiring members, that is, various cables and a connection cabinet for connecting them are required. However, in different office buildings of various shapes, it is not appropriate to realize wiring with the same article structure because various restrictions and regulations occur when laying optical cables.

In particular, the optical cord with a one-end connector is fusion-spliced with the floor wiring cable in the optical rosette. Therefore, wiring work such as fusion work was required. The reason for using this optical rosette is mainly conversion to the connector and protection of the connecting portion and accommodation of extra length. Due to the purpose of storing this extra length, there was a limit to the miniaturization of the rosette. On the other hand, the optical cord with a connector on one end that comes out of the rosette is inferior in lateral pressure characteristics to the cable for floor wiring.
It couldn't be used on a long length. Therefore, the optical rosette had to be installed around the personal desk, and it was not always satisfactory in terms of installation location and method.

As a method of solving such a problem, it is possible to directly attach a connector to the floor wiring cable, but since the floor wiring cable has a structure including a steel wire tension member, it has a large bending rigidity and an optical termination. Problems occur in handling near the equipment.

Furthermore, these cables are also restricted by the laying method. When wiring directly inside the wall or under the floor,
Since it is practically impossible to replace these cables, new cables must be laid, and the installation site is limited, so sufficient construction cannot be performed. Further, since the plastic pipe for laying a telephone line and the like has a limited inner diameter, it is very difficult to newly pass the existing telephone line while leaving it.

By the way, conventionally, there is no cable or cord with a connector attached to a terminal, and when a cable or cord without a connector is pulled in, a steel wire or a reinforcing member disposed as a tension member is reinforced by untwisting. The line was connected by connecting a tool to the fiber and pulling it. However, in the case where a cable with a connector attached is also run, it is an issue to consider where to hold the tension for laying the cable when pulling in, and the tension may damage the cable components such as the connector. It was

[0008]

SUMMARY OF THE INVENTION According to the present invention, a reinforcing tube is attached to the end of an indoor cable suitable for floor wiring and is attached to a connector. It is an object of the present invention to provide an optical fiber that can be passed without damaging the cable constituent material in the case of the above. Another object of the present invention is to provide a wiring method using the above-mentioned optical fiber, in which a cable constituent material is not damaged.

[0009]

SUMMARY OF THE INVENTION In order to solve the above problems, the inventors of the present invention have a connector-equipped cable that can be wired to an equipment terminal without the need for a post-wiring connector in an existing pipe and an optical fiber rosette. It was found that the above object can be achieved by developing the towing end structure and the towing method, and based on this finding, the present invention has been accomplished.

That is, the present invention relates to (1) a cable having a connector attached to a terminal, which is detachably connected to a threading tool which is a detachable sleeve holder attached to a lock portion of the connector. An optical fiber cable having a pulling end, (2) a cable in which a connector is attached to the terminal, a) a cable portion made of a core fiber, a tension member, and a thermoplastic resin coating covering these, b) a cord portion composed of the core fiber, a protective tube covering the core fiber, a reinforcing fiber arranged on the outer periphery of the protective tube and a reinforcing tube covering the reinforcing fiber, and c) the cable part and the cord part. Disposed between the core fiber, the protective tube of the cord portion covering the core fiber, and the outer side of the protective tube. The optical fiber cable according to item (1), comprising: a tension member of the cable portion, a reinforcing fiber of the cable portion arranged outside the tension member, and a conversion portion formed of a pipe covering these. ) The optical fiber cable according to any one of (1) and (2), characterized in that the cable portion directly covers the two tension members and the single-core optical fiber, and (4) above. There are multiple terminals to which connectors are attached, and when these connectors are arranged on the same plane, there is a step in the longitudinal direction so that the connectors do not hit each other. The end is attached,
Other connectors are characterized in that they are integrated with a tear-off string fiber by a heat-shrinkable tube (1).
To (3), the optical fiber cable according to any one of (1) to (4), and the optical fiber cable according to any one of (5) (1) to (4). It is intended to provide a method of passing the wire.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the optical fiber cable of the present invention will be described with reference to the drawings. In addition, in each of the following drawings, the same reference numerals indicate the same parts. Figure 1 (a)
FIG. 1 is an exploded view showing a terminal portion of an optical fiber cable with a connector of the present invention in a plan view, and FIG. 1B is an exploded view showing a terminal portion of an optical fiber cable with a connector of the present invention in a side view. Is. As shown in FIG. 1, a connector 2 is attached to an end portion of an optical fiber in an optical fiber cable 1 with a connector of the present invention. The tow end 10 is attached to the connector 2. The towed end 10 comprises a sleeve holder 3, a sleeve 4, a protective cap 6, a string 7 and an untwist 8. The sleeve holder 3 used for the adapter used for connecting the connectors to each other so that the ferrule 4 is inserted is mounted on the lock portion 2a of the connector 2, and the sleeve 5 used for the adapter is fitted to the sleeve holder 3 A protective cap 6 is attached to the sleeve 5 to prevent dust from adhering to the fiber. A string 7 tied to a twist back 8 is sandwiched between the connector 2 and the sleeve holder 3.

The connector 2 may be of any shape as long as it is attached to an optical fiber cord terminal and is used for optical connection with a device or a connector. For example, in FIG. 1, an F04 connector (SC connector) defined by JIS C 5973 is attached. The shape of the sleeve holder 3 is determined according to the respective shapes of the connector 2, the ferrule 4 and the sleeve 5. Also,
The material of the sleeve holder 3 is not particularly limited, but JI
Anything that conforms to the F04 connector and adapter specified in S C 5973 and has the same performance,
It is preferably made of synthetic resin. The sleeve holder 3 can be removed from the lock portion 2a of the connector by applying a constant tension.

The sleeve 5 is similar to the sleeve holder in that
Anything can be used as long as it has the same performance as the SC connector and adapter conforming to JIS C 5973, and the dimensions are J
According to ISC 5973. The material of the sleeve 5 is preferably phosphor bronze, and more preferably zirconia. The protection cap 6 is made of rubber, for example. The thickness of the string 7 is not particularly limited, but may be any thickness that does not hinder the attachment of the connector 2 and the sleeve holder 3. The material of the string 7 is not particularly limited, but the breaking strength thereof may be 68.6 N or more. This is the connection strength of the connector, and when a tensile force higher than this is applied, the connector is released and the connector can be protected. The untwisting 8 should not exceed the maximum vertical or horizontal dimension of the connector and the maximum diameter dimension of the wire passing tool described below. A wire passing tool is attached to the twist back 8. The threading tool may be directly attached to the untwisting member 8 or may be indirectly attached via a string or the like. Here, the wire passing tool refers to a rod made of carbon, FRP, plastic, metal or the like, for example, Jet Line Tiger (trade name) manufactured by Marvell.

A method of assembling the pulling end of the optical fiber cable of the present invention will be described with reference to FIG. Figure 2
8A to 8D are respectively assembly views of the pulling end of the optical fiber cable of the present invention. First, the sleeve holder 3 and the twist back 8 are tied with the string 7 (FIG. 2). The string 7 is wound and tied around the sleeve insertion portion 3a of the sleeve holder 3. Furthermore, a string for pulling is tied to the untwisting part 8. The sleeve holder 3 is attached to the lock portion (not shown) of the connector 2 so that the ferrule 4 can be inserted (FIG. 2). Sleeve holder 3 to protect the tip of connector 2
Then, the sleeve 5 is fitted into the sleeve (FIG. 2). Further, a protective cap 6 is attached to a sleeve (not shown) to prevent dust from adhering to the optical fiber. In this way, the pulling end 10 is attached to the connector 2 (FIG. 2).

The pulling end of the optical fiber cable with a connector produced in this manner is tied to the tip of a general wire-conducting tool that has been pre-wired in the pipe, and the optical fiber cable with the connector is drawn by pulling it in. Pass through the inside,
Optical fiber wiring can be performed. The optical fiber cable of the present invention is directly connected to the optical terminal equipment without using an indoor termination box such as an optical rosette. The present invention is
It is suitable for single-core optical connectors.

The present invention can also be applied to an optical fiber cable in which a cable portion having a large bending rigidity and a cord portion having a small bending rigidity are switched before and after the conversion portion. Here, the large bending rigidity means that the cable is so rigid that a certain amount of force is required to bend it. Low flexural rigidity means that the cable is flexible enough to be bent freely.

FIG. 3 is a front view of an indoor optical fiber cable with a connector. Cable 3 as shown in FIG.
Reference numeral 1 includes a cable portion 32 having a large bending rigidity, a cord portion 33 having a small bending rigidity, and a conversion portion 34. Although not shown in the drawing, a core fiber runs through the cable 31.

Here, the bending rigidity is JIS C6851.
It was measured by the hardness (flexural rigidity) specified in paragraph 19. Among the methods specified in this, 19.5 method E1
It can be concretely expressed by the following equation based on the results obtained according to 7C. Hardness B = Fπr ² (N · m ² ) F: Measured force (N) r: Cable bending radius (m) Specifically, it is preferable that the bending rigidity is small, the hardness expressed by the above formula. (Bending rigidity) is 2 × 10 ⁻⁴ (N · m ² ) or less. The bend radius of the cable is 0.03 m, which is the allowable bend radius of the fiber. High flexural rigidity means that the hardness (flexural rigidity) expressed by the above formula is 6 × 10.
^-4 (N · m ² ) or more. The bend radius of the cable is 0.03 m, which is the allowable bend radius of the fiber. It is preferable that the cable portion having high bending rigidity has a hardness B three times or more that of the cord portion having small bending rigidity.
Further, a connector 35 can be arranged at the tip of the cable 31 on the cord portion 33 side. Therefore, without providing a connection box for connector conversion such as a rosette,
It is possible to convert a cable having a large bending rigidity into a cord having a small bending rigidity and connect the cable to the optical terminal device.

FIG. 4 is an enlarged sectional view of the cable portion 32 shown in FIG. The cable portion 32 is the core fiber 4
1, tension member 42 and thermoplastic resin coating 43
Consists of. A quartz optical fiber, a plastic optical fiber, or the like is used for the core wire 41. The number of propagation modes may be single mode (SM) or multimode. The outer diameter of the core wire 41 is not particularly limited, but is 0.25
˜0.55 mm is preferable, and 0.25 to 0.5 mm is more preferable.

The tension member 42 includes steel wire or fiber reinforced plastic (FRP (Fiber Reinforced Plast).
ic)) etc. are used. Aramid FRP as FRP
Glass fiber reinforced plastic (GFRP) and the like are preferable. The outer diameter of the tension member 42 is not particularly limited, but is preferably 0.1 to 1.0 mm, and 0.4 to 0.7 m.
m is more preferred.

A flame-retardant resin is used for the thermoplastic resin coating 43, and preferably a polyethylene-based flame-retardant non-halogen material or polyvinyl chloride is used. Cable part 3
The structure of No. 2 is not limited, but for example, as shown in FIG. 4, a core wire 41 is arranged in the center, and two tension members are arranged around the core wire 41, and these are covered with a thermoplastic resin. It has a structure in which it is collectively covered with 43. The outer diameter of the cable portion 32 is not particularly limited, but 1.3
× 2.8-2.0 × 4.0 mm is preferable, 1.5 ×
More preferably, it is 3.0 to 1.8 × 3.8 mm.

FIG. 5 is an enlarged sectional view of the cord portion 33 shown in FIG. The cord portion 33 includes the core fiber 41, the protective tube 51, the reinforcing fiber 52, and the reinforcing tube 53.
Consists of. The reinforcing fibers 52 are densely arranged in the clearance between the protective tube 51 and the reinforcing tube 53. Protective tube 5
Reference numeral 1 is for protecting the core wire 41, for example, nylon or the like is used. The outer diameter of the protective tube 51 is not particularly limited, but is preferably 0.6 to 1.5 mm, and 0.7 to 1.
2 mm is more preferable. The inner diameter of the protection tube 51 needs to be a thickness that allows the core wire 41 to pass therethrough,
0.3-0.6 mm is preferable and 0.3-0.4 mm is more preferable. The reinforcing fiber 52 needs to have toughness, but may be softer than the tension member 42, and aramid fiber or the like is preferable. The fiber diameter is not particularly limited, but the tensile strength is 20 g / d or more and the tensile elastic modulus is 80.
It is preferable to use at least three 0 g / d or more.

The reinforcing tube 53 is made of a flame-retardant resin, preferably a polyethylene-based flame-retardant non-halogen material, polyvinyl chloride, or the like. As shown in FIG. 5, for example, the cord portion 33 has a structure in which the core wire 41 is covered with a protective tube 51, several reinforcing fibers 52 are arranged around the protective tube 51, and these are covered with a reinforcing tube 53. It has a broken structure. The outer diameter of the cord portion 33 is not particularly limited, but is preferably 1.5 to 3.0 mm and 1.8 to 2.
5 mm is more preferable.

FIG. 6 is an enlarged vertical sectional view of the conversion unit 34 shown in FIG. The conversion part 34 is located between the cable part 32 and the cord part 33 and has a large bending rigidity.
2 is a portion for converting the cord portion 33 having a small bending rigidity. The conversion part 34 includes a core fiber 41, a tension member 42, a protective tube 51, a reinforcing fiber 52, and a pipe 6.
It consists of 1. The pipe 61 is preferably a SUS pipe (stainless steel pipe). The outer diameter of the pipe 61 is not particularly limited, but is preferably 3.5 to 6.5 mm and 4.0.
-6.0 mm is more preferable, the length is 20-40 mm, and 25-35 mm is more preferable.

As shown in FIG. 6, for example, the converting portion 34 has a structure in which the core fiber 41 is covered with a protective tube 51, the tension member 42 is arranged outside the protective tube 51, and the reinforcing fiber 52 is a tension member. It is arranged outside 42 and has a structure in which these are covered with a pipe 61. Further, a glass semicircular member (not shown) is provided in the pipe 61.
Also, a reinforcing portion including the heat shrinkable tube 63 may be provided. Specifically, the reinforcing fibers 52 arranged as described above.
Etc. are covered with a heat-shrinkable tube 63 together with a glass semicircular member (not shown), and these are covered with a pipe 61. Both ends of the pipe 61 may be closed by boots 64, and the inside of the pipe may be cured by using an adhesive. The adhesive used at this time is preferably an epoxy adhesive.

The above-mentioned optical fiber cable in which the cable portion having a large bending rigidity and the cord portion having a small bending rigidity are switched before and after the conversion portion can be manufactured, for example, according to the following manufacturing process. (1) Disconnection of the cable 32 and the cord 33 (2) Annealing of the cord 33 (3) Removal of the sheath 43 of the cable 32 (4) Removal of the sheath 53 of the cord 33 (5) Insertion of components and fiber passage (6) Heat Shrink (7) Pipe installation

Next, a preferred mode of manufacturing the optical fiber cable shown in FIG. 3 according to the above steps will be described in more detail. First, the cable 32 and the cord 33 are cut to the length of the designated dimension, and the cord 33 is annealed (steps (1) and (2)). Next, the coating 43 of the cable 32 is stripped to a specified size, the core fiber 41 and the tension member 42 are exposed, and the tension member 42 is removed.
Cut to a length that fits in (step (3)). The reinforcing tube 53 of the cord 33 is stripped off, and the protective tube 51 and the reinforcing fiber 52 are exposed so that the length fits in the conversion section 34 (step (4)). Next, as shown in FIG. 7, the boot 64 is inserted into the cord 33, the boot 64, the pipe 61 and the heat shrinkable tube 63 are inserted into the cable 32, and the core tube fiber derived from the cable 32 is inserted into the protective tube 51 derived from the cord 33. The tension member 42 derived from the cable 32 is arranged outside the protection tube 51 derived from the cord 33, and the cord 3 is disposed outside the tension member 42 derived from the cable 32.
The reinforcing fibers 52 derived from 3 are arranged (step (5)).

Thereafter, as shown in FIG. 8, the joint portion between the cable 32 and the cord 33 is placed on a glass semicircular member (not shown) and covered with a heat-shrinkable tube 63, and the tube 6
Heat shrinks 3 (step (6)). After the heat shrinkage, the adhesive is applied to the surface of the heat shrinkable tube 63,
The pipe 61 is attached so as to cover the both ends, and both ends of the pipe are sealed by the boots 64 to complete the process (step (7)).

Next, the case of passing an optical fiber cable having a plurality of terminals to which connectors are attached will be described. When there are a plurality of terminals to which the connector is attached, if the terminals are integrated, they may be close to the inner diameter of the pipe to be passed to protect the connector when passing the wire, and there is a possibility that the wire cannot be passed at the bent portion. Therefore, when these connectors are arranged on the same plane, attach the towing end to the longest end connector among the connectors that are attached with a step in the longitudinal direction so that the connectors do not hit each other, and tear the other connectors apart. By integrating the cord-like fibers with the heat-shrinkable tube, it is possible to prevent external damage to the inner wall of the conduit and the connector, which is accompanied by deterioration of optical characteristics.

FIG. 9 shows a partially transparent plan view of the pulling end of the optical fiber cable with a connector when the number of terminals to which the connector is attached is two. In FIG. 9, the heat-shrinkable tube 71 is shown as a transparent view. As shown in FIG. 9, the connectors 2b and 2c are attached with a step in the longitudinal direction so that the connectors do not hit each other when they are arranged on the same plane. Of these connectors,
The pulling end 75 is attached to the longest end connector 2b, and the other connector 2c is integrated with the tearing string fiber 72 by the heat shrink tube 71. Tear-like fiber 72 for tearing
Is arranged so as to penetrate the heat shrinkable tube 71 in the longitudinal direction, and the heat shrinkable tube 71 is used when the connector 2c is taken out.
Used for tearing. Tear-like fiber 72 for tearing
The thickness is not particularly limited, and the material is preferably aramid fiber, polyester fiber or the like.

The wire passing method of the present invention and the conventional method will be described with reference to FIG. FIG. 10 is an explanatory diagram showing a wire passing method of the present invention and a conventional wire passing method. Conventionally, there is no cable or cord with a connector attached to a terminal, and the cable with a connector has not been drawn into a conduit. Therefore, the cable 8 without connector
When pulling 5 into the conduit 82, the wire-cutting tool 83 is tied to the steel wire or the reinforcing fiber arranged as the tension member 86 via the untwisting 84, and the wire-cutting tool 83 is pulled. Optical fiber cable 85 by
Was running on the line. On the other hand, the wire passing method of the present invention uses the lock function of the connector of the cable 81 with a connector to lock the connector (not shown).
A pulling end 90 is attached to the cable 81 with a connector by attaching a sleeve holder (not shown) to the cable holder, a wire passing tool 83 is tied to the sleeve holder via a twist back 84, and the wire passing tool 83 is pulled. The optical fiber cable 85 is passed by. By adopting such a tow end structure, it is possible to retract without enlarging the tow end structure, and when a certain tension is applied, the lock is released and there is also a safety function to prevent damage to the cable component material. Have.

[0032]

The present invention will be described in more detail based on the following examples, but the invention is not intended to be limited thereto.

A. Fabrication of optical fiber cable Optical fiber cable 31 shown in FIG.
Was manufactured and the terminal was assembled as shown in FIG.

[0034]

[Table 1]

In the cable portion 32, a silica step type single mode (SM) fiber is used as the core fiber 41, one colored core wire having an outer diameter of 0.25 mm is used, and both ends of the core wire are used. Place the two tension members 42,
A cable which was collectively covered with the thermoplastic resin 43 was used. For the cord portion 33, a nylon tube having an outer diameter of 0.9 mm is used as the protective tube 51, and the reinforcing fiber 52
Three Kevlar (trade name) were used as. The outer diameter of the reinforcing tube 53 is 2 mm. The conversion unit 34 includes
A heat-shrinkable tube 63 is used, an epoxy adhesive (Hi Super 30 (trade name, manufactured by Cemedine Co., Ltd.)) is used as an adhesive, and a pipe 61 has an outer diameter of 5 mm and a length of 32 m.
m SUS stainless steel pipe was used.

First, the coating 43 of the cable 32 was peeled off to expose the core fiber 41, and then the coating portion 43 of the cable 32 was cut with a nipper so that the tension member 42 was exposed by 5 mm. Next, the reinforcement tube 53
Peel 5 mm and cut Kevlar fiber 52 leaving about 5 mm.
Next, the core fiber 41 is passed through the nylon tube 51, and the tension member 4 is placed outside the nylon tube 51.
2 was arranged, and the Kevlar fiber 52 was arranged outside the tension member 42. Further, these were placed on a glass semicircular member (not shown) and then passed through a heat-shrinkable tube 63 to heat-shrink the tube. After heat-shrinking, an adhesive was applied to the heat-shrinkable tube 63, and the SUS pipe 61 and the boot 64 were loaded and brought into close contact with each other.

After the SC connector was attached to the tip of the cord portion, the pulling end was installed. First, the sleeve holder and the untwist were tied with a string, and the string was tied around the sleeve insertion portion of the sleeve holder. Furthermore, a string for pulling was tied to untwist. Next, attach this sleeve holder to the lock part of the connector so that the ferrule can be inserted,
A sleeve was fitted in the sleeve holder to protect the tip of the connector. Further, a protective cap was attached to the sleeve to prevent dust from adhering to the optical fiber.

B. A Jet line tiger (trade name, manufactured by Marvell) was passed through the line conduit, and the pulling end of the optical fiber cable with a connector produced at this tip was tied. By pulling the Jet line tiger, the optical fiber cable with connector could be passed through the conduit.

C. When the tension at which the sleeve holder was released from the lock portion of the connector was measured during tension measurement, it was found that the lock was released when a laying tension of over 68.6 N was applied.

[0040]

According to the present invention, a reinforcing cable is attached to the end of an indoor cable suitable for floor wiring and attached to a connector, and a cord having good handleability around the equipment can be formed and connection to the equipment is possible without fusion splicing. It is possible to provide an optical fiber cable. That is, it is possible to inexpensively perform optical wiring to a device by converting a wiring cable with a connector without providing an indoor termination box for connector conversion such as a rosette. Also, by installing the tow end on the connector attached to the terminal, it is possible to pass the cable without damaging the cable constituent material when passing the cable, which can reduce the construction cost and further the freedom of wiring. The degree improves.

[Brief description of drawings]

FIG. 1 (a) is an exploded view showing a plan view of a terminal portion of an optical fiber cable with a connector of the present invention,
FIG. 1B is an exploded view showing a side view of a terminal portion of the optical fiber cable with a connector of the present invention.

FIG. 2 is an assembly drawing of the pulling end of the optical fiber cable of the present invention.

FIG. 3 is a front view of an indoor optical fiber cable with a connector.

FIG. 4 is an enlarged cross-sectional view of the cable portion 32 shown in FIG.

5 is an enlarged cross-sectional view of the cord portion 33 shown in FIG.

6 is an enlarged vertical cross-sectional view of the conversion unit 34 shown in FIG.

FIG. 7 is a diagram showing one step of a manufacturing process of the optical fiber cable shown in FIG.

FIG. 8 is a diagram showing one step of a manufacturing process of the optical fiber cable shown in FIG.

FIG. 9 is a partially transparent plan view of the pulling end of the optical fiber cable with a connector when the number of terminals to which the connector is attached is two.

FIG. 10 is an explanatory diagram showing a wire passing method of the present invention and a conventional wire passing method.

[Explanation of symbols]

1 optical fiber cable 2, 2b, 2c connector 2a Lock part 3 Sleeve holder 3a Sleeve insertion part 4 ferrules 5 sleeve 6 Protective cap 7 strings 8 untwist 10, 75, 90 Tow end 71 heat shrink tube 72 Tear-shaped fiber for tearing Cable with 81 connector 82 conduit 83 Wire passing tools 84 Untwist

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2H001 FF06 FF07 FF08                 2H038 CA63 CA74                 5G363 AA07 BA10 DB35 DB37                 5G375 AA18 DA19

Claims (5)

[Claims] 1. A cable having a connector attached to a terminal, the cable having a pulling end detachably connected to a wire passage tool attached to a detachable sleeve holder attached to a lock portion of the connector. And optical fiber cable. 2. A cable having a connector attached to the terminal comprises: a) a cable portion made of a core fiber, a tension member and a thermoplastic resin coating covering these, and b) the core fiber, the core fiber. A protective tube covering the protective tube, a cord portion composed of a reinforcing fiber arranged on the outer periphery of the protective tube and a reinforcing tube covering the reinforcing fiber, and c) between the cable portion and the cord portion, the core fiber, A protective tube for the cord portion covering the core fiber, a tension member for the cable portion arranged outside the protective tube, a reinforcing fiber for the cable portion arranged outside the tension member, and a conversion portion consisting of a pipe covering these The optical fiber cable according to claim 1, wherein the optical fiber cable comprises: 3. The optical fiber cable according to claim 1, wherein the cable portion directly covers the two tension members and the single-core optical fiber with an outer cover. 4. There are a plurality of terminals to which the connector is attached, and among the connectors attached with a step in the longitudinal direction so that the connectors do not hit each other when they are arranged on the same plane. 4. The pulling end is attached to the connector at the longest end of the above, and the other connectors are integrated with the tearing string-like fiber by a heat shrinkable tube.
An optical fiber cable according to item. 5. A wiring method, wherein the cable according to any one of claims 1 to 4 is drawn into a conduit and wired.