JPS6041791Y2 - feed line - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power supply line, and particularly to a power supply line using a cable having a plurality of power supply lines within a cable sheath.

At construction sites, lights and danger signs are installed at appropriate intervals over a relatively long distance to provide lighting for night work or to display danger signs to indicate that construction is underway.

Conventionally, in order to achieve these purposes, a branch cable attached to a vinyl electric wire or the like has been equipped with a socket, a bare light bulb, or an indicator light.

When the cable length of a power supply line using construction lighting cables becomes long, the illuminance decreases due to voltage drop, etc., and in some cases, the illuminance may not turn on with a fluorescent light or the like.

In order to avoid such a voltage drop, it is conceivable to increase the size of the power supply line of the cable, but this would result in poor bending of the cable and also increase the outer diameter of the cable.

Furthermore, if the power supply line is cut, it becomes impossible to feed power beyond the cut point, which poses a problem in terms of safety.

The purpose of this invention is to eliminate these problems and provide a highly safe power supply line without voltage drop. In the power supply device, each of these power supply lines is comprised of a plurality of power supply lines arranged in parallel.

In other words, the cable used in this power supply line is 2-core, 3-core (35'3W, 1$3W, etc.), or 4-core (35'3W, etc.) depending on the type of power source at the part where it is connected to an external power source such as an outlet.
The trunk section where the waist branch line (f4W, 2i4W, etc.) is connected has one or more wire cores arranged in parallel from each core, and these are arranged inside the cable sheath. If necessary, in-phase connections are made at branches, ends, or other parts in order to balance the in-phase.

Examples will be explained below.

Fig. 1 shows a single-phase two-wire cable, and the feeder line 2 connected to the outlet 1 consists of two wires 21 and 22.
The main line portion 3 to which the branch line is connected is 211, 212, 22
Consists of 4 lines, 1,222, main lines 211, 212, 22
1 and 222 are connecting points 31 and 22 to the feeder lines 21 and 22, respectively.
32, 33, and 34 are connected.

411, 412, 421.422, 431.432 indicate branch lines, for example, branch lines 411, 41
2 are connected to main lines 212 and 222, respectively, and branch lines 421 and 422 are connected to main lines 211 and 221, respectively.

FIG. 2 is a sectional view of the feeder line 2, FIG. 3 is a sectional view of the main line 3, and 5 indicates a sheath.

In a power feed line using a cable having such a configuration, a voltage drop can be prevented, lighting defects will not occur, there is no need to thicken the power feed line that makes up the cable, and therefore,
The cable has good flexibility.

Figures 4a and b show the conventional case where only one feeder line is used.
Branch connection part 40 when there are a plurality of power supply lines according to the present invention
This indicates the condition of the connector, and it is also economical because it prevents the connection from becoming thicker.

Also, if the power supply line is divided into multiple lines like this,
Even if one of the lights is disconnected, the power supply to each light will not be stopped.

FIG. 5 shows another embodiment of the single-phase line cable. In this embodiment, the power supply line 2 connected to the outlet 1 consists of two wires 21 and 22. , the main line portion 3 to which the branch line is connected is 211, 212, 2
Consisting of six lines 13, 221, 222, 223, branch lines 41, 42, 43 .・
... are connected, and the main lines of the same phase are connected, for example, at connection point 3.
In addition to 1° 32, there are connection points 38.32, as can be seen for example at connection points 35, 36.
39 and are appropriately connected.

When using a cable with such a configuration, the same effects as in FIG. 1 can be obtained, but the degree of safety is further improved.

FIG. 6 shows yet another embodiment, showing the case of single-phase three-wire or three-phase three-wire. Each main line portion 3 to which branch lines are connected is divided into two lines.

Even when using a cable with such a configuration, the first
Similar to the embodiments shown in FIGS.

In addition, FIG. 7 shows still another embodiment, in which main lines 211, 22 provided with branch lines 44, 45, etc.
1,212,222,213°223 A mesh wire 6 made of a high tensile strength wire is disposed within a main cable 3 having a diameter of 1,212,222,213°223. The main conductor 9 having an insulating layer 8, ie, 211, 221, 212, 222, etc. in FIG. There is.

If the metsenger wire is inserted in this way, the tension can be shared and the slack can be reduced, so even if the fixing point or support point of these cables is lengthened, wire breakage will not occur. Therefore, it is also possible to take many branches, such as a danger display.

Note that the metsenger wire can also be used as a grounding wire if necessary.

In addition, the high tension wire used here includes the number of wire cores to be twisted,
The outer diameter is appropriately selected depending on the outer diameter of the core or the magnitude of tension, and the cable is constructed using tape or an intervening material to improve the connection.

In addition, same route heterogeneous connections such as 15'3W, 3$3W (3f 3W, 200V and 3, $3W100V,
1, $3W 100V and $3W 200V), etc., can easily be done by changing the power supply connection, but in general, 6-core and 7-strand Metsenger wires are preferred from the manufacturing standpoint.

Furthermore, in the case of a multi-core wire with a low tension, branching work becomes easier if the insulating layer 7 of the high-tension wire is made thicker as shown in FIG.

As described above, the power supply line of the present invention enables highly safe power supply without causing voltage drop, and has great industrial effects.

[Brief explanation of the drawing]

Figure 1 is a wiring diagram of an embodiment of the cable in the feed line of the present invention, and Figures 2 and 3 are Figures 1 A and B, respectively.
Figure 4a. b is a side view of a branch part of the cable in the conventional and inventive feeder lines, FIGS. 5, 6, and 7 are wiring diagrams of different embodiments of the cable in the inventive feeder line, and FIG. FIG. 9 is a cross-sectional view of part 0 of the figure, and FIG. 9 is a cross-sectional view of another embodiment. 1...Outlet, 2...Power line, 3
・・・・・・Main line part, 211, 212, 221, 22
2. Curve/main line, 31, 32, 33, 34... Connection point, 411. 412, 421, 422, 431, 43
2...branch line, 6...messenger wa, no.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a feeder line containing multiple cores, the main line section set for connecting branch lines at required intervals has a number of wires greater than the number of cores of the feeder line, In addition, each core of the feeder line is constructed by connecting a plurality of wires to each other, and the branch line is connected to and taken out from any one of the plurality of wires connected to each other in the main line portion. Characteristic power supply line. 2. The power feed line according to claim 1, wherein the main line portion is formed by connecting a plurality of cores of the power feed line to each other and connecting them at required intervals. 3. The power feed line according to claim 1, wherein the power feed line and the main line portion have a mesh wire in their cable sheaths.