JP2007178563A - Single suspension cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a single suspension cable that greatly facilitates installation of an optical drop cable which is added to an existing optical fiber cable. <P>SOLUTION: In the single suspension cable 1, there are arranged, in parallel with a prescribed interval, the suspension cable 1 having a jacket 3 and an optical drop cable 4 having a jacket 8, wherein the catenary 1 is provided with hanger members 10 for hanging the optical drop cable, having prescribed spaces apart. Cable through-holes 10a where the optical drop cable 4 is put through are independently provided to the hanger members 10. The optical drop cable 4 is installed in a manner loosely inserted in the cable through-holes 10a of the hanger members 10, in the structure of the single suspension cable. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a one-line suspension line for laying an additional optical drop cable on an existing optical fiber cable for a trunk line.

  Conventionally, a self-supporting optical fiber cable has a main body of a supporting line and an optical fiber cable for a trunk line, and when this is suspended in the air, both ends of the supporting line are fixed to a power pole. The main body of the optical fiber cable can be held. In this self-supporting optical fiber cable, since the support wire and the main body of the optical fiber cable are integrated using a connecting member, it is not necessary to install the support wire alone, and the installation is only required once. Such an optical fiber cable is shown in Japanese Patent Laid-Open No. 2000-338376.

  However, in the above-described conventional optical fiber cable, a plurality of optical fiber cables are accommodated in the trunk optical fiber cable. However, the recent spread of optical communication, particularly the rapid use of optical fiber cables in the Internet. Along with this increase, it has been necessary to lay an additional optical drop cable at the location of the existing optical fiber cable, not just with the existing optical fiber cable. However, there is a restriction on the laying of communication cables, and only one suspension line can be laid between utility poles, and an additional optical drop cable has to be integrated with the existing trunk optical fiber cable.

In order to solve this problem, there has been a cable erection method using a spiral hanger as shown in Japanese Patent Application Laid-Open No. 2004-80999. This cable erection method is a cable erection method for laying a new cable together with the existing cable on an existing cable hanger erected on a spiral hanger, and has a guide that can hold the existing cable inside The tow rope is extended by moving the means along the existing cable while passing through the spiral hanger, and after connecting the new cable to the tip of the tow rope, the new cable is fed out. However, the new cable is installed in the hanger by winding up the tow rope.
JP 2000-338376 A JP 2004-80999 A

  However, in the conventional cable erection method described above, a spiral hanger member is attached to an existing cable, and an additional optical drop cable is inserted through this hanger member. Installation is very time consuming, and the cost of the hanger member is not low. As a result, this construction method is expensive.

  The present invention has been made in view of the above-described conventional problems, and a member to be used is inexpensive, and a single-stranded suspension line that can very easily lay an optical drop cable to be added to an existing optical fiber cable is provided. It is to provide.

  In order to solve the above-described problems, the present invention provides a hanging line having an outer skin and an optical drop cable having an outer skin arranged in parallel at a predetermined interval, and a hanger member for suspending the optical drop cable on the hanging line is provided at a predetermined interval. In the monolithic hanging wire, the hanger member is provided with a cable through hole for penetrating the optical drop cable independently, and the optical drop cable is disposed in a loosely fitted state in the cable through hole. .

  Further, in the present invention, the hanging line having the outer skin and the optical drop cable having the outer skin are arranged in parallel at a predetermined interval, and the hanger member for hanging the optical drop cable on the hanging line is provided at the predetermined interval. The hanger member is independently provided with a cable through-hole for penetrating the optical drop cable, the optical drop cable is loosely fitted in the cable through-hole, and an introduction line for indexing the optical drop cable is provided. It is characterized by being inserted through the cable through hole of the hanger member.

  Furthermore, the present invention is a single-lined hanging line in which a hanging line having a hull and an optical drop cable having a hull are arranged in parallel at a predetermined interval, and a hanger member for hanging the optical drop cable on the hanging line is provided at a predetermined interval. Before laying the suspension line, the hanger member is previously fixed to the suspension line through the suspension line through hole and fixed at a predetermined interval, the introduction line is penetrated through the through hole of the hanger member, and when installing an additional optical drop cable, The optical drop cable is inserted into the cable through hole of the hanger member by connecting the optical drop cable to one end of the introduction line after laying a suspension line and pulling out the other end of the introduction line. is there.

  The hull of the hanging line used for the one-line hanging line of the present invention is made of a commonly used synthetic resin. For example, it forms integrally with a hanger part by the covering extrusion molding by polyethylene resin.

  Since the present invention is configured as described above, when an additional optical drop cable is laid on an existing cable, it is only necessary to insert the additional optical drop cable into the cable through hole of the hanger member by an introduction line. There is no need to install a new hanger member or the like, the work can be done very easily and in a short time, and the cost for laying work can be greatly reduced.

  In addition, since the hanger member used in the present invention is an inexpensive material such as polyethylene and has a relatively simple structure, the cost of the single member can be reduced, and the cost of the laying operation can be reduced and the cost can be greatly reduced Down is possible.

  Furthermore, the present invention can be used as it is when the optical drop cable is laid next, once the unifying suspension line is attached to the existing cable, and the installation work of a new unifying member can be omitted. Therefore, it is possible to reduce the cost of laying work as well as the cost of the monolithic member.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The best mode of a monolithic hanging line and its laying method according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a monolithic suspension line of the present invention, a sectional view taken along line XX of FIG. 1, FIG. 3 is an enlarged sectional view showing an optical drop cable used for the monolithic suspension line of FIG. FIG. 5 is a process diagram illustrating a method for laying the single-hung suspension line in FIG. 1.

  As shown in FIG. 1 or FIG. 2, the one-line suspension line according to the present invention includes a suspension line 1 having a support core line 2 and an outer skin 3, and a drop cable 4 arranged in parallel at a predetermined interval. Hanger members 10 for suspending 4 are provided at predetermined intervals. The hanger member 10 is disposed so as to be integrated with the suspension line 1 at a predetermined interval, and the drop cable 4 is disposed in a state of loosely fitting into the cable through hole 10b.

  The suspension wire 1 of this single-stranding suspension wire uses a core wire 2 in which a plurality of steel wires or the like are twisted, and is formed by coating extrusion molding that covers the core wire 2 with a synthetic resin such as polyethylene serving as the outer skin 3. It has a sufficient strength when it is fictitious. And the hanger member 10 is also shape | molded from synthetic resin materials, such as polyethylene, and is integrated with this suspension wire 1 by molding.

  Further, as shown in FIG. 3, the drop cable 4 includes a support wire 5 formed of steel wire or the like, and an optical fiber portion formed of tensile strength wires 6 and 6 and an optical fiber core wire 7, such as polyethylene or polyvinyl chloride. These are integrated with the outer skin 8 and extruded by a thermoplastic resin such as. A cut is formed in the outer sheath 8 so that the optical fiber core wire 7 and the tensile strength wire 6 can be easily separated.

  As shown in FIG. 4, the optical drop cable 4 configured in this manner is branched from the trunk cable 11 by a branch closure 12, suspended from the suspension line 1, and drawn into a general subscriber's house 13. is there. In the house 13, the optical drop cable 4 is one in which the support wire 5 is disconnected and only the optical fiber portion is wired indoors and connected to an optical connection device 14 such as a personal computer.

A method for laying the single-hung suspension line constructed as described above will be described.
First, as shown in FIG. 1, a hanger member 10 is integrated into a predetermined position by molding at a hanging line 1 manufactured by extrusion molding or the like at a manufacturing factory or the like. And as shown to Fig.3 (a), the introduction line 9 for letting the optical drop cable 4 pass is inserted in the cable through-hole 10a of the hanger member 10 integrated with the suspension line 1. FIG.

  Next, as shown in FIG. 3 (b), the original optical drop cable 4 is inserted into the cable through hole 10 b of the hanger member 10 using the introduction line 9 before the suspension line 1 is laid, as shown in FIG. deep. Further, as shown in FIG. 3C, the introduction line 9 is inserted again into the cable through hole 10 a of the hanger member 10 for laying the additional optical drop cable 4.

  Next, as shown in FIG. 4, the suspension line 1 fitted with the optical drop cable 4 is wired to the utility poles 15, 15, the optical drop cable 4 is inserted into the hanger member 10, and the drop drop closure 16 is attached to the retracted position. It will be pulled into the original general subscriber's house 13.

  Further, when the installation work of the optical drop cables 4 'and 4' occurs in the additional houses 13 'and 13' after the completion of the installation work of the home 13 of the general subscriber, it is added by the procedure shown in FIG. Will be laid.

  As described above, the one-line suspension line 1 of the present invention can be used to lay an additional optical drop cable very easily by inserting the additional optical cable through the insertion portion 11 of the hanger member 10 into the existing optical drop cable 4. It is. And since this hanger member 10 is a molded product of a synthetic resin material having a relatively simple structure, its component cost is also low, and it can be made low even when combined with construction costs.

  Moreover, once the single-hung suspension line of the present invention is attached, the number of optical drop cables to be added is not limited to one, and two or three can be added. And even in that case, since it is not necessary to add a new hanger member 10, cost and labor can be significantly reduced.

  In addition, this invention is not limited to embodiment mentioned above, Of course, various aspects are possible within a claim. For example, the shape, material, etc. can of course be selected as appropriate. For example, the shape of the through-hole of the hanger member can be variously formed according to the shape of the hanging line and the optical drop cable.

FIG. 1 is a perspective view showing a monolithic hanging line according to the present invention. It is XX sectional drawing of FIG. It is sectional drawing which shows the optical drop cable used for the single-hung hanging line of FIG. It is a schematic diagram which shows the laying state of the single-hung hanging line of FIG. It is process drawing explaining the laying method of the unification hanging line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suspension wire 2 Core wire 3 Outer skin 4 Optical drop cable 5 Support wire 6 Tensile wire 7 Optical fiber core wire 8 Outer skin 9 Lead wire 10 Hanger member 10a Through-hole 11 Trunk cable 12 Branching drop closure 13 Housing 14 Optical connection equipment 15 Electric pole 16 For dropping Drop closure

Claims (3)

In the monolithic hanging line in which a hanging line having a hull and an optical drop cable having a hull are arranged in parallel at a predetermined interval, and a hanger member for hanging the optical drop cable on the hanging line is provided at a predetermined interval,
The said hanger member is provided with the cable through-hole which penetrates the said optical drop cable independently, and is arrange | positioned in the state in which the said optical drop cable is loosely fitted in this cable through-hole, The single line hanging characterized by the above-mentioned. In the monolithic hanging line in which a hanging line having a hull and an optical drop cable having a hull are arranged in parallel at a predetermined interval, and a hanger member for hanging the optical drop cable on the hanging line is provided at a predetermined interval,
The hanger member is independently provided with a cable through-hole for penetrating the optical drop cable, and the optical drop cable is loosely fitted in the cable through-hole, and an introduction line for indexing the optical drop cable is provided. A monolithic hanging line that is inserted into the cable through hole of the hanger member. In the monolithic hanging line in which a hanging line having a hull and an optical drop cable having a hull are arranged in parallel at a predetermined interval, and a hanger member for hanging the optical drop cable on the hanging line is provided at a predetermined interval,
Before laying the suspension line, the hanger member is previously fixed to the suspension line through the suspension line through hole and fixed at a predetermined interval, and the introduction line is penetrated through the through hole of the hanger member, and when installing an additional optical drop cable, The optical drop cable is inserted into the cable through hole of the hanger member by connecting the optical drop cable to one end of the introduction line after laying a suspension line and pulling out the other end of the introduction line. Hanging line.

Images