JP2000295756A - Connection method and connection structure for power composite cable containing optical cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection method and a connection structure for a power composite cable containing an optical cable, by which the connection of the optical cable can be performed independent of the connection of a power cable, and which enables the shortening of the connection work time, and can lower the manufacture cost of a connection box. SOLUTION: A protective tube 3 for covering the connection between both power cables, and protective caps 4 and 4' for blocking both ends of this protective tube 3, on power composite cables 1 and 1' containing each optical cable, are used. The optical cable of one power composite cable 1 or 1' containing an optical cable is led out through the protective cap 4' or 4 on the other power composite cable 1' or 1 containing an optical cable, and the fellow optical cables are connected outside the protective tube 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the field of linear connection technology for power composite cables containing optical cables,
The present invention relates to a connection method and a connection structure for a power composite cable including an optical cable.

[0002]

2. Description of the Related Art FIG. 2 shows an example of connection of a conventional power composite cable containing an optical cable. A power cable connecting portion 12 of both power composite cables 11 and 11 'to be connected is protected by a protective tube 13. A cover box is formed so that both ends thereof are converged in a tapered shape so as to be in close contact with the power composite cable containing each optical cable, and a waterproofing tape 14 is applied at the mounting portion to form a connection box for the power cable connection portion 12. .

A protective tube 13 constituting a connection box is provided with a pocket 16 provided with a barrier, and in this pocket, the optical cables 15, 15 '(both optical cores) of the power composite cable containing both optical cables are connected. 17 Reference numeral 18 denotes a lid for closing an opening formed for the connection processing unit 17 in the pocket.

[0004]

FIG. 2 shows a conventional connection example of a power composite cable containing an optical cable; according to FIG. 2, the connection processing unit is a common connection box for both the power cable (power line core) and the optical cable (light core); Although it is provided in the protection tube 13, there is a drawback that the work time is extremely long and the efficiency is low because the work of connecting the power line core and the light beam core cannot be performed simultaneously in the connection box.

Further, in order to connect a precision optical cable in the connection box, it is necessary to devise a special pocket or the like in the connection box. There is a problem in point.

SUMMARY OF THE INVENTION An object of the present invention is to provide an optical cable-incorporated power composite which can connect an optical cable independently of a power cable connecting portion, shorten the connection work time, and reduce the manufacturing cost of a connection box. An object of the present invention is to provide a cable connection method and a connection structure.

[0007]

According to the present invention, there is provided a method for connecting a power composite cable with an optical cable provided by the present invention, comprising: a protective tube for covering a connection portion of both power cables; Using a protective cap that closes on the cable, pull out the optical cable in each power composite cable with optical cable through the protective cap on the other power cable with optical cable, and connect the optical cables together outside the protective tube. Become.

[0008] The connection structure of the power composite cable with an optical cable provided by the present invention comprises a protective tube for covering the connection portion of both power cables, and a protective tube on each optical composite cable with an optical cable so as to close both ends of the protective tube. The protective cap attached to the main body constitutes a connection box body, and each protective cap has a draw-out hole for pulling out the optical cable of the power composite cable including the optical cable which is the other end of the power composite cable including the optical cable to which the protective cap is to be attached. The optical cable termination box is provided outside the protection tube.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention by a connection structure of a power composite cable containing an optical cable, and a power cable connection part of both power composite cables 1 and 1 'to be connected. A protective tube 3 having a cylindrical shape is provided on the upper surface 2 and both ends of the protective tube 3 are closed with protective caps 4 and 4 'made of a rubber molded product. Waterproofing tape 5 is applied to the cables 1 and 1 ', and a waterproofing tape 5 is applied to the connecting portion between the protective tube 3 and the protective caps 4 and 4'. A junction box having a structure is formed, and the compound 6 is filled in the box.

Each of the protective caps 4 and 4 'is provided with a cylindrical draw-out hole 7 and 7' for use in drawing out an optical cable. That is, the optical cable 8 'of the power composite cable 1' with an optical cable which is the other side of the power composite cable 1 with the optical cable on the side where the cable is provided passes through the lead hole 7, and the optical cable 8 'of the side where the cable is provided is inserted into the draw hole 7'. Through the optical cable 8 of the power composite cable 1 including the optical cable, which is the other end of the power composite cable 1 'including the optical cable, the optical cables 8 and 8' thus drawn out are connected in the dedicated optical cable termination box 9. Is what you do.

Now, a description will be given of an assembling method of such a connection structure. First, before connecting, a protective cap 4 is inserted into one power composite cable 1 containing an optical cable, and the other power composite cable 1 'containing an optical cable, The protective cap 4 'and the protective tube 3 are inserted. Power cable: After connecting the power line core, the protection tube 3 previously inserted is moved onto the power cable connection portion 2.

Next, one optical cable 8 is passed through the lead-out hole 7 'of the protection cap 4' on the mating cable, and the other optical cable 8 'is passed through the drawing hole 7 of the protection cap 4 on the mating cable. After the respective optical cables 8, 8 'are drawn out, the two protective caps 4, 4' are fitted to the protective tube 3, and the fitting portions and the protective caps 4, 4 'are connected to the cables 1, 1'. Part of the
In addition, a waterproofing tape 5 is applied to the draw-out portions of the optical cables 8, 8 'to obtain a waterproof connection box. The connection box is filled with the compound 6.

Optical cables 8, 8 'led out
Is connected in a dedicated optical cable termination box 9. The optical cable termination box 9 is preferably installed outside the protection tube 3 and is appropriately fixed on the protection tube 3 by a support member.

According to the present embodiment having such a connection structure and a connection method, since the optical cable; the light core is drawn out to be connectable, the power cable; the power core and the optical cable can be individually connected. become,
Work time can be reduced. Also, since the optical cable drawn out to the outside can be connected with a dedicated termination box,
The main body connection box does not need to have a complicated structure, and the manufacturing cost can be reduced.

The material of the protection tube 3 is a metal or hard vinyl chloride tube. The protective caps 4 and 4 'are formed of ethylene propylene rubber or vinyl dipping. Protection tube 3 and protection cap 4,
4 'may be integral. However, in this case, the structure is such that the protection tube 3 can be divided.

[0016]

According to the present invention as described above, the connection of the optical cable can be performed independently of the power cable connection portion, the working time of the connection can be reduced, and the manufacturing cost of the connection box can be reduced. It is possible to achieve an intended object of providing a connection method and a connection structure of a power composite cable including an optical cable.

[Brief description of the drawings]

FIG. 1 is a sectional explanatory view showing an embodiment of the present invention by a connection structure of a power composite cable including an optical cable.

FIG. 2 is an explanatory sectional view showing a connection example of a conventional power composite cable with an optical cable.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1 'Power composite cable containing optical cable 2 Power cable connection part 3 Protective tube 4, 4' Protective cap 5 Waterproofing tape 6 Compound 3 Protective tube 7, 7 'Pull-out hole 8, 8' Optical cable 9 Optical cable termination box

Claims (2)

[Claims] An optical cable for each power cable including an optical cable, comprising: a protection tube for covering a connection portion of both power cables; and a protection cap for closing both ends of the protection tube on the power composite cable including each optical cable. A method of connecting an optical fiber-containing power composite cable, in which the cable is pulled out through a protective cap on the other party's optical cable-containing power composite cable, and the optical cables are connected to each other outside the protective tube. 2. A junction box main body comprising a protective tube for covering a connection portion of both power cables and a protective cap mounted on each power cable containing an optical cable so as to close both ends of the protective tube. Each of the protective caps has a draw-out hole for drawing out the optical cable of the power composite cable including the optical cable which is the other side of the power composite cable including the optical cable to which the protective cap is attached, and an optical cable termination box is provided outside the protective tube. , Connection structure of power composite cable with optical cable.