JPS63228103A - Method for laying optical cable with connector within the same floor - Google Patents

Abstract

PURPOSE:To permit an operation with high reliability by winding a cable with connectors on a reel to protect the cable and laying the cable by passing a shaft into the central hole of the reel, holding this shaft and towing and turning the reel along a laying route. CONSTITUTION:Two pieces of disks 3 provided with slits 4, 5 having two kinds of diameters concentrically and joint parts 6 partially are disposed to face each other to form the reel 2 having a winding frame for the optical cable 1. The optical cable 1 of a prescribed length attached with the connectors 8 at both ends is wound on this reel. Laying of the optical cable 1 between A and B is executed by holding the winding terminal to a photoelectric device side, holding the shaft 71 passed through the shaft hole 7 and laying the cable to a final point B along the prescribed route while unwinding the cable together with the reel 2. The surplus length is made to remain as it is on the reel 2 and the beginning end of the winding on the outside surface of the disks 3 is unwound for a required length and the connector 8 is connected to the photoelectric device on the connection side at the end point B of the laying. The operation with the high reliability is thereby permitted and the method for housing the surplus length at the end point of the laying is simplified.

Description

[Detailed Description of the Invention] [Summary] The present invention relates to a method for laying optical cables with connectors on the same floor to be connected between optoelectronic devices. Since the cable is laid while moving, it can be easily and reliably carried out regardless of individual differences.Additionally, there is no need to provide a special treatment section for processing the excess length at the end of the cable. This is a method of installation that can simplify the process.

[Industrial application field]

The present invention relates to a method for laying optical cables with connectors on the same floor to connect optoelectronic devices.

In order to maintain the transmission characteristics of optical fiber over a long period of time, the optical fiber is coated with a reinforcing material that minimizes stresses such as tension, twisting, and bending to form an optical cable.Allowable values are also specified depending on the reinforcing structure. There is.

The equipment racks used for optical multiplex transmission systems are large.

Moreover, it is a high-density mounting rack device, and a large number of racks are installed in multiple rows on the same floor.

The optical cable with connector that connects this rack equipment is
The laying route has many curved parts and is long and short, and the laying work must be carried out with careful attention to the above-mentioned points, and a simple laying method is desired.

[Conventional technology]

The conventional installation method involves untying cables with connectors bundled in a ring shape and pulling the cables beyond the specified value.

The cables were installed between the connecting racks to avoid bending the cables.

In addition, the extra length of the cables resulting from installation was absorbed by bundling them into a ring shape without twisting the cables beyond the allowable bending dimension.

[Problem that the invention seeks to solve]

However, in the conventional installation method, (1) the installation worker's attention is often relied on to avoid excessive tension and twisting, and the reliability of the work is unreliable.

(2) It is necessary to provide a section to absorb the excess length generated at the end point of the cable.

There were drawbacks such as.

The present invention aims to solve the above-mentioned problems and proposes a new method for installing an optical cable with a connector, which uses a cable wound on a reel and is simple and easy to install.

[Means for solving problems]

When installing an optical cable with a connector to connect optoelectronic devices with each other, an optical cable with a connector of a predetermined length wound around a reel is provided with means for reducing the outer diameter of the reel, and one end is connected to the optoelectronic device. hold it on the side,
While rewinding the reel, the cable is laid by rotationally moving along a predetermined route, and the excess length generated at the end of the cable is left on the reel to be absorbed, and the free outer diameter of the reel is reduced to reduce the length of the photoelectron of the other party. This problem is solved by the method of laying an optical cable with a connector on the same floor according to the present invention, in which the optical cable with a connector is housed and fixed in a cable housing part between devices or in the vicinity thereof.

[For production]

In other words, since the optical cable wound on the reel is unwound and laid, it can be easily and reliably installed without any individual differences.
In addition, processing of excess length at the end point of the laying becomes easy and the purpose is achieved.

Cables with connectors are protected by being wrapped around a reel, and installation is carried out by passing a shaft through the center hole of this reel and pulling the cable along the installation route by holding this shaft. It can be laid easily and without twisting.

To dispose of the excess length that occurs at the end of the installation, leave it unwound on the reel, protect it and absorb it, and store and fix the entire reel in a cable accommodation section within or near the optoelectronic equipment, and provide a special disposal section. There's no need.

In addition, the reel has an outer diameter that matches the maximum storage length,
After the optical cable is laid, only the extra length is wound into six parts, and the outside diameter of the winding becomes small, leaving most of the winding frame as a useless empty outside diameter part.

Therefore, in order to eliminate this empty outer diameter portion, the reel is provided with means for reducing and varying the outer diameter.

This variable means can be carried out, for example, by providing intermittent slit circles of various diameters concentrically on the outer diameter of the reel, passing the slit circles of a predetermined diameter through the reel, cutting off the outer periphery of the slit circle, and reducing the outer diameter. After installation, a necessary part is left to protect the extra length, and the outer diameter is reduced to make it easier to handle and store as a small reel.

In this way, when laying optical cables with connectors, it is possible to perform highly reliable work without applying excessive tension or twisting, and without relying on the attentiveness of the installer. There is also no need to provide a special treatment section (,
It can be absorbed into the reel as it is, and the outer diameter can be reduced to simplify the storage method.

Explain.

FIG. 1 shows an embodiment of the present invention, and FIG. 2 shows a laying method according to the present invention.

The diameter of the winding 6 is equal to or larger than the minimum bending type of the optical cable 1, and the optical cable l is made by facing two discs 3, each of which has concentric slits 4 and 5 of two different diameters and partially has a joining part 6. An optical cable 1 of a predetermined length, which is assembled at a factory and has connectors 8 at both ends, is wound around a reel 2 having a reel 2 formed thereon.

The starting end of the winding is passed through the disk 3 on one side and pulled out to the outer surface for a certain length, and is twisted while being held by a plurality of tongues 9 provided on the outer surface of the disk 3 for holding the optical cable 1. Let's hold it.

A shaft hole 7 is provided through the central shaft of the reel 2.

To lay the optical cable 1 between the ASBs, as shown in Fig. 2, at the starting point A, hold the end of the winding on the optoelectronic device side, hold the shaft 71 passed through the shaft hole 7, and unwind the reel 2 together. , the cable is rotated along a predetermined route and the cable is laid to the end point B.

At the end point B of the installation, the remaining length is left unwound on the reel 2, and the starting end of the winding, which is spirally held on the outer surface of the disc 3, is unwound to the required length and the connector 8 is connected to the optoelectronic device to be connected. Connect.

At this time, most of the winding frame of the reel 2 is a wasteful empty outer diameter part, so leaving the part necessary to protect the extra length and connecting part 6 (the third part) of the slit circle 4 or 5. 2
The reel 2 is made smaller by cutting the outer periphery (X-marked part in the figure) with nippers or the like, thereby making it easier to store, and storing the extra length of the optical cable 1 together with the reel 2.

This example is for a single-core optical cable with a diameter of about 3 m, and the minimum bending diameter is 6011. The reel 2, which is made of an assembled synthetic resin molded product, has 6 windings with a diameter of 7 all, and an outer diameter of 17 (Ml).
A disc 3 is provided with two slit circles 4.5 of 10.13 cm concentrically, and four types of reels 2 with an interval of 3,6,9, and 12 m are used to respectively connect the optical cable 1. It accommodates windings with a maximum length of 6,11,16,21 m-t, and the spacing is determined by replacing and assembling the winding core, in order to standardize parts and enable widespread use.

The starting end of the winding accommodated on the outer surface of the disk 3 on one side is 80 cm, and the maximum extra length of accommodation due to cutting of the joint 6 of the slit circles 4 and 5 after installation is as shown in the following table depending on the spacing.

The above embodiment is just an example, and the structural dimensions and number of cores of the optical cable as well as the dimensions of each part of the reel may be designed according to the application, and the reel outer diameter reduction variable structure and winding start end accommodation structure are also limited to the above. It's not a thing.

〔Effect of the invention〕

As described above, the method for laying an optical cable with a connector according to the present invention prevents excessive tension and twisting of the optical cable.

It does not cause bending and does not depend on the attentiveness of the installer.
Highly reliable work can be achieved, and there is no need to provide a special treatment section to process the excess length at the end of the laying process.The excess length can be absorbed into the reel as it is, and the outer diameter can be reduced to simplify the storage method. , - Stone can fulfill the effect of killing two birds.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the present invention, and FIG. 2 shows a laying method according to the present invention. In the figure, 1 is an optical cable, 2 is a reel, 3 is a disk, 4.5 is a slit circle, 6 is a joint,
7 is a shaft hole, 8 is a connector, 9 is a tongue piece, and 71 is a shaft. $fe:a14t=Yokakubanari 56, 112 drawings

Claims (1)

[Claims] A reel (1) provided with a means for reducing and varying the outer diameter of the reel (1) in installation for connecting optoelectronic devices with an optical cable (1) with a connector.
2) A predetermined length of the optical cable with the connector (1
), one end is held on the optoelectronic device side, and while rewinding the reel (2), it is rotated along a predetermined route to perform the laying, and the extra length generated at the end point of the laying is transferred to the reel (2) as it is. A method for laying an optical cable with a connector in the same floor, characterized in that the optical cable with a connector is absorbed by the reel (2), the free outer diameter of the reel (2) is reduced, and the optical cable is housed and fixed in the optoelectronic device of the other party or a cable housing part in the vicinity thereof. .