JPH01164216A - Formation of low voltage drop wire - Google Patents

Abstract

PURPOSE:To improve appearance, by inserting a power drop wire and a rubber plastic pipe respectively into through-holes of a spacer having at least two through-holes and inserting communication wires into the rubber plastic pipe at a required time. CONSTITUTION:At least two through-holes 4 are made through a spacer 3 where a power drop wire 1 is inserted through one of two through-holes and a rubber plastic pipe 2 is inserted through the other through-hole. Such spacers 3 are arranged with predetermined interval. Communication wires, e.g. conventional stranded pair wires, a a coaxial cable or an optical fiber cable, are inserted into the rubber plastic pipe 2 when it is required by a consumer thus forming a low voltage drop wire where communication wires are added to the power drop wire 1 while being separated therefrom.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of forming a low-voltage drop-in line in which a communication line is attached to a low-voltage drop-in line for electric power drawn from a low-voltage overhead power distribution line into a general residence, etc.

(Prior Art and Problems to be Solved) Currently, there are two types of electric wires that are installed in general residences: low-voltage power lines that are connected to low-voltage overhead distribution lines, and telephone lines that are connected separately. , is seriously harming fltjA.

In addition, in the future, we will be able to use systems other than telephone lines, such as automatic meter reading, data communications, and
When communication lines such as ATV and facsimile are required,
If different electric wires or cables are connected using the same method, the above-mentioned problem becomes even more serious, and furthermore, it becomes necessary to provide a stop for these electric wires in the residence.

However, these problems must be solved by technology in order to cope with the increasingly advanced information society.

(Means for Solving the Problems) The present invention provides a method for forming a low-voltage lead-in wire that solves the above-mentioned problems. The purpose is to insert a low-voltage power drop-in line, a rubber pipe, and a plastic pipe, respectively, and then insert a communication line through the rubber or plastic at a required time, and attach the communication line to the low-voltage power drop-in line at a distance.

Figure 1 is a perspective view of the method of forming a low-voltage drop-in line of the present invention before the communication line is inserted into the rubber or plastic pipe, and Figure 2 is the first view with the communication line inserted into the rubber or plastic vibrator. FIG.

In the drawings, (1) indicates a power low-voltage drop-in line consisting of a single-core insulated wire having a coating layer of polyvinyl chloride or the like on the conductor, or a multi-core insulated wire made by twisting a plurality of such insulated wires; (2) ) is a pipe made of rubber, plastic, etc., (3) is polyvinyl chloride, weather-resistant polyethylene,
This is a plastic spacer formed by molding plastic such as polypropylene.

The spacer (3) is provided with at least two insertion holes (4), one of which is provided with the power low-voltage lead-in line (1).
However, a rubber or plastic pipe (2) is inserted through the other one, and by providing such spacers (3) at regular intervals, the low-voltage power drop-in line (1) is inserted, as shown in Figure 1. ), a rubber or plastic pipe (2) is attached to it. Therefore, when a customer needs it, a necessary communication line (5
), for example, by inserting ordinary twisted-pair communication lines, coaxial cables, or optical fiber cables, etc., and attaching the communication line (5) to the low-voltage power drop-in line 0) at a distance, as shown in Figure 2. form a low-voltage drop-in line.

Such an attachment structure of the power low-voltage drop-in line (1) and the rubber or plastic pipe (2) may be constructed in advance at a factory or the like, or may be attached at the site.

The rubber or plastic pipe (2) used may be made of polyvinyl chloride, polyethylene, polypropylene, ethylene propylene rubber, neoprene rubber, etc., but as shown in Figure 3 (a) and (b), It may also have a composite structure.

Figure 3 a) and (rumored to be structural examples of rubber and plastic pipes (3) with a composite structure. Figure 3 B) are, for example, polyethylene pipes (2) reinforced with glass fiber, Kabler, etc. A layer (22) is provided, and an outer F!I (23) made of ethylene propylene rubber is provided on top of the layer (22).Furthermore, Fig. 3 (b) shows, for example, a Teflon pipe with excellent abrasion resistance in the innermost layer. (24), on which the inner layer of ethylene propylene rubber (25) and the fiber reinforced layer (22) are placed.
) and an outer layer (23) of ethylene propylene rubber are sequentially provided.

Rubber and plastic pipes with such composite structure (2)
is highly effective with improved tensile strength, compression resistance, and flexibility.

Furthermore, the spacer (3) has two through holes (4) communicating with each other, as shown in Figures (A) and (B), for example.
It has a notch (32) in one of the communicating parts, and has a structure that can be opened and closed using this as a fulcrum, and a concave part (32) in one of the opening and closing parts.
By using a retaining structure with a convex part (33) formed on the other side, installation becomes easy, especially when installing a rubber or plastic pipe (
2) is effective for attaching the shelves.

(Effects of the Invention) As explained above, according to the method of forming a low-voltage drop-in line of the present invention, it is not only possible to attach the required communication lines at the required time, but also it is possible to attach low-voltage drop-in lines for electric power and communication lines. Since it is integrated with a spacer, it does not spoil the scenery unlike the conventional method.

Furthermore, at present, low-voltage power drop-in lines and metallic communication lines (twisted-pair cables, coaxial cables) are stipulated to be installed separately due to the problem of interference, and cannot be integrated into an overhead line. However, according to the forming method of the present invention, there is no fear that the two may come into contact with each other, and it is possible to realize integration. Furthermore, in the case of optical fiber cables, there is no problem of contact with low-voltage power supply lines, but damage to the coating and breakage of the optical fiber due to contact can be prevented.

[Brief explanation of the drawing]

FIG. 1 shows rubber,
A perspective view of the communication line before it is inserted into the plastic pipe.
FIG. 2 is a sectional view taken along line XX in FIG. 1, showing a state in which a communication line is inserted into a rubber or plastic pipe. Fig. 3) and (b) are both cross-sectional views of structural examples of rubber and plastic pipes according to the present invention. Figs. 4) and (b) are explanatory diagrams of an example of a spacer according to the present invention. 1... Low-voltage power lead-in line, 2... Rubber, plastic pipe, 3... Spacer, 4... Insertion hole, 5...
・Communication line. Capture 1

Claims (1)

[Claims] (1) Insert the power low-voltage lead-in line and the rubber/plastic pipe into the insertion holes of the spacer, which has at least two insertion holes, and then insert the communication line into the rubber/plastic pipes at the required time to generate power. A method for forming a low-voltage service line, which comprises attaching a communication line at a distance from the low-voltage service line.