JPH118918A - Method of wiring cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the method of wiring cables for improving the merit of the use of cables, solving the convergence of cables directly under a cable wiring rack or those inside the case wiring rack, making the handling of cables inside the cable wiring rack easy, and reducing the size of the cable wring rack. SOLUTION: Cable piping, 1 bundling one or more conducts, are laid to the inside of the cable wiring rack in advance. Then, a cable 3 is laid to a predetermined stage inside the rack. When the wiring of a cable 3 is required, the cable 3 is inserted though the inside of the conduit 2 and wired. The cable 3 can be wired, without converging at the under part of the inside of the cable wiring rack. Since each of the cables 3 is wired independently, wiring can be made with a suitable length so that then is no necessity for making the cable length unnecessarily long.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable wiring method for wiring a cable on a cable wiring frame formed in a plurality of stages.

[0002]

2. Description of the Related Art FIG. 9 is an explanatory view of an example of a method for wiring cables in a conventional cable distribution rack. In the figure, 51
Is a step, 52 is a cable bundle, and 53 is a surplus portion. The cable wiring rack is provided with a plurality of steps 51 for wiring each communication body (cable). From the outside to the cable distribution rack, a plurality of cables are bundled and laid as a single cable bundle 52. Then, the cable bundle 52 is put into the cable distribution rack from the lower end of the cable distribution rack, and each cable constituting the cable bundle 52 is placed in a predetermined step 5.
Route to 1

At this time, since the cables are laid in advance in units of the cable bundle 52, it is not known at which stage 51 and at which position each cable in the cable bundle 52 will be wired until the wiring is performed. To increase the cable length. The extra cable is subjected to extra length processing in the extra length portion 53 after wiring. However, this extra length 5
3, the cable is congested, so that there is a problem that extra space is required in the cable distribution rack.

Further, since a cable bundle 52 in which a large number of cables are assembled in advance is laid, if the demand is less than expected, an extra cable will be laid, resulting in an extra cost. Also, for example, in 1996
As described in the Surface Electronics and Information Communication Society Communication Society Conference, Masao Tachikura et al., B-971 "Management and Operation of Optical Distribution Facilities in the Office", a database is required to manage unused cables. However, a great deal of labor was required for its management and operation. Although it is conceivable to lay a cable bundle 52 in which one or a small number of cables are gathered as needed, by laying a new cable bundle 52 sequentially, a large number of cable bundles 52 can be placed immediately below the cable distribution rack. Is expected to be congested.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and improves the efficiency of use of a cable, as well as congestion of a cable immediately below a cable wiring rack and reduction of a cable in the cable wiring rack. An object of the present invention is to provide a cable wiring method that solves congestion, facilitates handling of cables in a cable distribution rack, and can reduce the size of the cable distribution rack.

[0006]

According to a first aspect of the present invention, there is provided a cable wiring method, wherein a cable pipe is laid to the inside of the cable wiring rack. If necessary, a cable is sent through the cable pipe, and the cable is routed to the cable distribution rack.

According to a second aspect of the present invention, in the cable wiring method according to the first aspect, a plurality of conduits for accommodating a cable are bundled as the cable piping. It is.

According to a third aspect of the present invention, there is provided the cable wiring method according to the first aspect, wherein a plurality of pipes for accommodating a cable are integrally formed as the cable pipe. It is assumed that.

According to a fourth aspect of the present invention, in the cable wiring method according to the second or third aspect, an end surface of the cable pipe in the cable wiring rack is formed to be oblique or stepped. It is assumed that.

According to a fifth aspect of the present invention, in the cable wiring method according to the first aspect, a cable having a conduit for accommodating only one cable is used as the cable piping. .

According to a sixth aspect of the present invention, in the cable wiring method according to any one of the second to fifth aspects, the pipeline is extended to a position near any one of the stages of the cable wiring rack. It is characterized by being laid.

[0012]

FIG. 1 is a conceptual diagram showing an embodiment of a cable wiring method according to the present invention. In the figure, 1 is a cable pipe, 2 is a conduit, 3 is a cable, 4 is a step, and 5 is a cable anchor. The cable pipe 1 has at least one pipe 2
Are bundled. The cable pipe 1 is laid beforehand in the cable distribution rack. Here, cable piping 1
Although only one cable pipe 1 is shown, a large number of cable pipes 1 can be laid in order to provide as many pipe lines 2 as possible to transmit cables to be routed on a cable distribution rack.
At the point where cable routing is required,
The cable 3 is passed through the pipeline 2 inside. Then, it may be routed to the corresponding stage 4, cut and wired. Note that the cable 3 may be various communication lines such as an electric wire, an optical cable, or a composite cable.

By laying the cable pipes 1 in advance in the cable wiring rack in this way, even if the cable 3 is laid when the wiring becomes necessary, congestion can occur at the lower part of the cable wiring rack. Absent. In addition, since the cable 3 can be taken out and wired in the cable distribution rack, the work of specifying and routing the cable 3 can be easily performed. Such improvement in workability is also effective during work such as reconnection of wiring. Furthermore, if the cable pipe 1 is configured to have a plurality of conduits 2, the storage efficiency is improved as compared to the case where the conduits 2 are laid one by one.

Further, since wiring is performed for each cable 3, wiring can be performed with a required length for each cable 3. Therefore, the extra length can be minimized, and there is no need to provide a space for processing the extra length in the cable distribution rack, and the cable distribution rack can be downsized.

Further, since only a required amount of the cable 3 needs to be passed according to the demand, the cable 3 can be laid efficiently and economically. In addition, the unnecessary cables 3 can be collected together with the elimination of the demand, the work is easy, and the management burden of unused cables can be eliminated. In particular, in a configuration in which one cable 3 passes through one conduit 2, it is easy to pass the cable 3 according to demand, and management of the passed cable 3 is also easy. In addition, even when the demand is extinguished, the cables 3 are not entangled by the multi-laying, and the cables 3 can be easily collected.

In the example shown in FIG. 1, the cable piping 1 has a plurality of conduits 2. Each of the pipelines 2 extends from an end of the cable piping 1 in the cable distribution rack to a predetermined stage 4. By laying the pipeline 2 to the predetermined step 4 in this way, the transmitted cable 3 can be reliably laid to the predetermined step 4 and congestion with other existing cables 3 in the cable distribution rack. Wiring can be performed without performing. This makes it possible to easily perform the wiring work in the cable wiring rack.

FIG. 2 is a conceptual diagram showing a modification of the embodiment of the cable wiring method according to the present invention. In the figure, 6 is a connector, and 7 is a new pipeline. In the example shown in FIG. 2, the cable pipe 1 is drawn into the cable distribution rack, and its end is installed in the cable distribution rack. And cable 3
When it becomes necessary to lay the new pipe 7, a new pipe 7 is connected to the pipe 2 exposed at the end of the cable pipe 1 by using, for example, a connector 6, and the new pipe 7 is connected to a predetermined pipe. It may be configured to pipe up to the stage 4. In the configuration shown in FIG. 1, each pipeline 2 and the stage 4 in the cable distribution rack are associated from the beginning, but in the configuration shown in FIG. 2, the stage 4 for laying the cable 3 is specified later. Then, a new pipeline 7 may be laid, and the degree of freedom in laying the cable 3 and using the pipeline 2 can be increased.

FIG. 3 is a conceptual diagram showing another modification of the embodiment of the cable wiring method of the present invention. In the example shown in FIG. 3, an example is shown in which a plurality of cable pipes 1 are drawn into a cable distribution rack, and the cable pipes 1 are laid up to corresponding stages 4. When such a cable pipe 1 is laid, the cables 3 laid using the respective pipelines 2 are laid out neatly, so that the workability can be further improved.

FIGS. 4 to 7 are sectional views showing an example of a cable pipe used in the cable wiring method of the present invention. In the figure, 11 is a tensile member, 12 is a sheath, 13
Is a porous tube, and 14 is a hollow hole. The cable pipe 1 shown in FIG.
1 and a sheath 12 is provided on the outer periphery. As a specific example, a small-diameter pipe made of high-density polyethylene having an inner diameter of 2 mm and an outer diameter of 3.2 mm is used as the pipe 2, and eight pipes 2 are gathered around a central member having the tensile strength member 11, and then a nonwoven fabric is used. A holding roll was applied, and a flame-retardant polyethylene was sheathed as the sheath 12 with a coating thickness of 2 mm. Pipe line 2
A straight vertical attachment around the center member, pitch 700m
and twisted in one direction. Considering the passage of the cable 3, it is considered that a structure in which the pipes 2 are gathered around the central body while the pipes 2 are vertically aligned vertically so as to minimize the frictional resistance is the best. In the case where the diameter of the cable pipe 1 is small and the diameter of the center member for twisting the pipe 2 is small, even if the cable pipe 1 is twisted to such an extent that there is no hindrance in order to impart flexibility to the cable pipe 1. Good. The number of the pipelines 2 to be assembled is not limited to the eight shown in FIG. 4, but may be one or more, or any number. Further, the pipeline 2 is not limited to a single layer, and may be overlapped with two or more layers.

The cable piping 1 shown in FIGS. 5 to 7
Is a porous tube 13 having a number of hollow holes 14 therein.
And a sheath 12 is provided on the outside thereof. This hollow hole 14 becomes the conduit 2. The cable piping 1 shown in FIG. 5 and FIG.
Are shown, and examples are shown in which the hollow holes 14 are arranged in parallel and radially, respectively. Further, in the cable piping 1 shown in FIG. 7, an example is shown in which a tensile member 11 is inserted into the center of a perforated tube. As a specific example, the porous tube 13 is obtained by extruding and molding high-density polyethylene. In the configuration shown in FIG. 5 and FIG.
It is obtained by coating a flame-retardant polyethylene while vertically attaching a steel wire having a diameter of 1 mm to be the tensile strength member 11. The inner diameter of the hollow hole 14 of the porous tube 13 is 2 mm in diameter.
Degree. The diameters of the hollow holes 14 do not need to be all the same, but may be any size as required.

A cable 3 transmission experiment was performed using such a cable pipe 1. In the experiment, a thin cable having an outer diameter of 1 mm was used as the cable 3 by applying aramid fibers vertically around a core wire having a diameter of 0.25 mm and coating with PBT (polybutylene terephthalate) resin. 30 m was pushed into the pipe line 2 of the pipe 1 to pass through the pipe. The friction between the polyethylene and the PBT was small, and the wiring, which is usually performed by pulling, was able to push the entire length of the cable with a low pushing force of 100 g or less in this experiment.

FIG. 8 is a schematic view showing an example of the shape of the end of the cable pipe. The end of the cable pipe 1 in the cable distribution frame may be cut, for example, diagonally. For example, in the case of the cable pipe 1 as shown in FIG. 4, the end is as shown in FIG. Also, for example, in the cable pipe 1 as shown in FIG.
It becomes as shown in. If you cut diagonally like this,
Internal pipe 2 at different positions in the longitudinal direction of cable pipe 1
Cut ends are arranged. Therefore, the cable 3 sent to the pipeline 2 can be taken out from a different position on the end face of the cable pipe 1, so that the cable 3 after the sending can be easily gripped, and the inside of the cable wiring rack can be easily handled. Can be.

Actually, the end of the cable pipe 1 was cut obliquely, and the passed cable 3 was grasped and guided by hand, and was drawn to a predetermined position on the cable distribution rack. Even with the cable 3 sent to the pipeline 2 on the back side of the cable pipe 1, the cable 3 was specified, and the specified cable could be easily grasped from the end of the cable pipe 1. As described above, when the cable is led to the cable wiring rack and wiring is performed, the extra length may be minimized, and the extra length processing and the space for the extra length processing are unnecessary.

The transmission of the cable 3 may be performed from the cable wiring rack side to the outside or from the outside to the cable wiring rack. If a connector is attached to one end of the cable 3 in advance, wiring on the cable wiring rack or connection to an external device can be easily performed. If the connector is small,
It is also possible to transmit the inside of the pipeline 2 with the connector at the top. By attaching the connector in advance in this way, the on-site connection work can be reduced.

[0025]

As is apparent from the above description, according to the present invention, in a cable wiring method for laying a cable on a cable wiring rack formed of a plurality of stages, a cable pipe is laid to the inside of the cable wiring rack. By keeping
Even if the cable is laid when it becomes necessary, congestion does not occur at the lower part of the cable wiring frame as in the related art. In addition, since the cable can be taken out and wired in the cable distribution frame, the work of specifying and routing the cable can be easily performed. Such improvement in workability is also effective during work such as reconnection of wiring.

Further, by arranging the cable in the cable pipe when it becomes necessary, the cable can be routed in a necessary amount according to the demand, so that the cable can be laid efficiently and economically. While being able to
The use efficiency of the cable can be improved. Also,
Cables that are no longer needed can be removed with the elimination of demand, the work is easy, and the burden of managing unused cables can be eliminated.

Further, since wiring is performed for each cable, wiring can be performed with a required length for each cable. for that reason,
The extra length can be minimized, and there is no need to provide a space for processing the extra length in the cable distribution rack, and the cable distribution rack can be downsized.

As the above-mentioned cable piping, for example, a bundle of a plurality of pipelines for accommodating a cable as in the invention of claim 2 is used, or as in the invention of claim 3, A cable in which a plurality of conduits for accommodating a cable are integrally formed can be used. By using such a cable pipe having a plurality of conduits,
Compared to the case where the pipes are laid one by one, the pipes can be laid at a higher density in the cable wiring rack, and the storage efficiency of the pipes can be improved. In these cable pipes, for example, the end face in the cable distribution frame is formed obliquely or stepwise as in the invention described in claim 4, so that the cables passed through each conduit are dispersed on the end face. The cable can be easily taken out from the position, and each cable can be easily arranged.

The conduit in the cable piping is, for example, as set forth in claim 5
As in the invention described in (1), a pipe that accommodates only one cable may be used, and by adopting such a pipe,
Cables can be easily routed. Also, 1
By using one cable in the pipeline, the manageability of the cable is improved, and the entanglement of cables when multiple cables are laid is eliminated, so that the cables that were laid easily can be easily collected when the demand has disappeared. can do.

Further, as in the invention according to claim 6,
The pipeline in the cable piping can be laid to each level of the cable distribution rack, preventing the cables in the cable distribution rack from being congested and having the effect of easily performing new cable routing work. is there.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing an embodiment of a cable wiring method according to the present invention.

FIG. 2 is a conceptual diagram showing a modification of the embodiment of the cable wiring method of the present invention.

FIG. 3 is a conceptual diagram showing another modification of the embodiment of the cable wiring method of the present invention.

FIG. 4 is a sectional view showing an example of a cable pipe used in the cable wiring method of the present invention.

FIG. 5 is a cross-sectional view showing another example of a cable pipe used in the cable wiring method of the present invention.

FIG. 6 is a cross-sectional view showing still another example of a cable pipe used in the cable wiring method of the present invention.

FIG. 7 is a cross-sectional view showing still another example of the cable piping used in the cable wiring method of the present invention.

FIG. 8 is a schematic view showing an example of a shape of an end of a cable pipe.

FIG. 9 is an explanatory diagram of an example of a cable wiring method in a conventional cable wiring rack.

[Explanation of symbols]

1 ... cable piping, 2 ... pipeline, 3 ... cable, 4 ... step,
5 ... cable anchor, 6 ... connector, 7 ... new pipeline,
11 ... tensile strength body, 12 ... sheath, 13 ... perforated tube,
14 ... hollow hole.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeru Tanaka 1-chome, Taya-cho, Sakae-ku, Yokohama-shi, Kanagawa Prefecture Sumitomo Electric Industries, Ltd. Yokohama Works

Claims (6)

[Claims] In a method of wiring a cable in a cable wiring rack formed in a plurality of stages, a cable pipe is laid to the inside of the cable wiring rack, and a cable is sent through the cable pipe as necessary, and A cable wiring method characterized by wiring to a cable wiring rack. 2. The method according to claim 1, wherein a bundle of a plurality of conduits for accommodating a cable is used as the cable piping. 3. The cable wiring method according to claim 1, wherein a plurality of pipes for accommodating a cable are integrally formed as the cable pipe. 4. The cable wiring method according to claim 2, wherein an end surface of the cable pipe in the cable wiring rack is formed obliquely or stepwise. 5. The cable wiring method according to claim 1, wherein a cable having a conduit for accommodating only one cable is used as the cable piping. 6. The cable wiring method according to claim 2, wherein the pipeline is laid to a position near any one of the stages of the cable wiring rack.