JPH08153419A - Power feeding and distributing method to standardized building and distributing wire therefor - Google Patents

Abstract

PURPOSE: To eliminate the branching connection in a constructing site and facilitate the winding on a drum. CONSTITUTION: A main line 1 and a branched line 2 are arranged in parallel to each other, the insulating layers of both the lines 1, 2 are partially peeled at a fixed pitch to electrically connect both the lines to each other in the peeled part, and a mold insulating coating 9 is further applied thereto. Such a distributing wire is laid along a main line route, the branched line 2 is cut in a proper position of the above pitch, the cut branched line 2(S) is peeled and branched from the main line 1, and the resulting branched line (S) is led to a target 10 to be fed and distributed. This wire has no trouble when wound on a drum because the main line 1 and the branched line 2 are properly integrated together and juxtaposed over the whole length.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] The present invention contributes to labor saving in power supply and distribution work for buildings such as high-rise apartments, newly developed shopping streets, and underground malls where houses and shops are lined up at regular intervals. The present invention relates to a power distribution method and a power distribution wire.

[0002]

2. Description of the Related Art As shown in FIG. 9, for example, trays are used for supplying / distributing electricity to houses or stores T or lighting fixtures arranged at regular intervals such as high-rise apartments, newly developed shopping malls, and underground malls. A branch line S is drawn out from the trunk cable P laid in, and the terminal of this branch line S is connected to a power supply / distribution target (distribution board B or the like).

Conventionally, the branch connection of the service line is carried out at the site by branch connection work, or the branch line S is connected at the factory beforehand.
A structure in which the connecting portion is covered with a mold insulation (generally called an electric wire with a branch) is laid on each floor T, and the branch line S
The lead-in wire is connected and extended to the terminal, and the lead-in wire is drawn into each door T.

[0004]

The branch connection at the construction site in this conventional technique has a problem from the viewpoint of shortening the construction period and saving labor, and the electrical connection of the connection portion depends on the skill of the construction worker. -Physical properties vary, and there was a problem in this respect as well.

On the other hand, as seen in Japanese Utility Model Publication No. 58-10962, in the case of a branched electric wire in which the branch line S is connected in advance at the factory and the connecting portion is covered with mold insulation, the branch connection at the construction site is omitted. be able to. The mold insulating coating is, as shown in FIG. 10, a large-diameter electric wire P serving as a trunk line.
Part of the insulating layer is peeled off, and a small-diameter branch wire S is crimp-connected to the peeled electric wire conductor with a C-type connector c. The connected portion is put into a mold Q and an insulating resin a is injected and filled. I am going.

However, as can be understood from the figure, the branch line S is supported by a cantilever, and as shown by the arrow in the figure, the core (mold coating portion) is affected by the resin flow and resin pressure during molding. Is unevenly distributed, resulting in uneven thickness of the insulating mold coating. When the cable is wound around the packing drum, the uneven thickness of the insulating coating makes it difficult for the branch line S to follow the trunk line P, and the winding state becomes unstable. Further, since the other end of the branch line S is free, if the length of the branch line S is increased, a hindrance will occur during winding. Therefore, the branch line S cannot be lengthened.

In view of the above situation, the present invention does not require a branch connection at a construction site, and furthermore, when molding a branch connection part, the electric wire to be molded has a flow of molding resin and resin pressure. An object of the present invention is to make it possible to obtain a mold insulating coating in which uneven thickness does not occur without being biased by the influence of.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relating to a distribution electric wire has a constant diameter in which a large diameter electric wire serving as a trunk line and a small diameter electric wire serving as a branch line are arranged in parallel over the entire length. The insulating layers of both electric wires are partially peeled off at a pitch of 2, the both electric wires are electrically connected at the peeled portion, and the insulating insulation layer is covered with a mold insulation coating.

The distribution electric wire having this structure is obtained by integrally extruding the above-mentioned insulating layers of the large-diameter electric wire and the small-diameter electric wire, and the insulating layer of the large-diameter electric wire and the small-diameter electric wire has a neck portion of a narrow cross section. It may be configured to be connected.

Further, in the invention relating to the power supply / distribution method, when the electric wire is branched from the main line at regular intervals and the branch line is drawn into the power supply / distribution target, the distribution electric wire having the above-mentioned structure is connected to the main line. The small-diameter electric wire is laid along a path, cut at appropriate positions between the pitches, and the cut small-diameter electric wire is peeled off from the large-diameter electric wire to form a branch line, which is drawn into the power supply / distribution target.

[0011]

In the present invention configured as described above, the main line and the branch line are arranged in parallel, and the insulating layers of both electric wires are partially peeled according to the pitch of the power supply / distribution target to electrically connect the conductors of both electric wires. Since the connection and mold insulation coating are applied, the work of pulling in can be completed simply by cutting the branch line appropriately and pulling the terminal into the power supply / distribution target.

Further, since the trunk line and the branch line are arranged in parallel, when the conductor connecting portion of the trunk line / branch line is covered with the mold insulation, the branch line is also in a state of penetrating the mold die like the trunk line. , Both wires are supported at both ends of the mold and are not affected by the flow of molding resin and resin pressure.
It is possible to obtain a mold insulating coating without uneven thickness.

Further, in comparison with the conventional branch electric wire, the branch electric wire cannot be lengthened in view of the fact that the electric wire is wound on the drum as described above, but in the present invention, the branch wire and the branch wire are used. Since the wire and the wire are arranged in parallel and are integrated as appropriate over the entire length, there is no problem in winding the packing drum, and therefore the branch wire can be made sufficiently long.

[0014]

EXAMPLES FIGS. 1 and 2 show a distribution electric wire according to the present invention.
FIG. 5 shows a state in which a branch line is drawn from the main line to each electricity supplier by the method of the present invention. The main line 1 (P) and the branch line 2 (S) are arranged in parallel, and the insulating layers 4a and 5a are partially peeled off according to the pitch of the power supply target 3 as shown in FIG. C-type connector 6 shown in FIG.
The compression connection 7 is made in (c). This connecting portion 7 is loaded in a molding die 8 shown in FIG. 4, and a mold insulating coating 9 is formed by injection molding of vinyl chloride resin a.

The power supply / distribution wires 1 and 2 thus obtained are laid in a laying groove or tray to be constructed, and a branch line (small diameter wire 2) is cut 11 at an appropriate position as shown in FIG. , The terminal S is connected to the terminal of the power receiving panel (distribution board) or distribution panel 10 (B). At this time, branch line S
When there is extra length, it may be offset or cut.

In the above embodiment, the main line 1 and the branch line 2 are separately extruded and arranged in parallel, and the insulating layer is partially peeled off, the C-type connector is connected, and the mold insulating coating is performed in accordance with the pitch of the power supply target 3. Therefore, if the branch line 2 is cut, it will be separated from the main line 1 by itself, which is very convenient at the construction site.

FIG. 6 shows another embodiment of the electric wire for distribution,
The conductors 4 and 5 serving as the trunk line 1 and the branch line 2 are simultaneously supplied to the extruder, and the insulating layer 4a of the trunk line 1 and the insulating layer 5a of the branch line 2 are supplied.
A bridge (narrow section neck 20) is installed between the
And the branch line 2 are integrated. This product makes it easy to wind and rewind the electric wire, stabilizes the parallel arrangement state of the trunk line 1 and the branch line 2 and facilitates the molding (insulating coating 9), and the electric wire can be laid in a groove or Even when it is laid on a tray, the main line 1 and the branch line 2 are integrated so that they are easy to handle. The branch line 2 is cut 11 and then the neck 20 is cut away from the main line 1.

In both of the above-mentioned embodiments, the distribution electric wire has a single phase, but as shown in FIGS. 7 and 8, the present invention can be adopted even when it has three phases or two phases. The embodiment of FIG. 7 is similar to the embodiment of FIGS. 1 and 2, and includes three trunk lines 1 and two branch lines 2.
Are separately manufactured and arranged in parallel, and the conductors 4a are arranged at a required pitch.
5a is connected, and a mold insulating coating 9 is formed on that portion. In the embodiment of FIG. 8, similarly to the embodiment of FIG. 6, three conductors 4 and 5 of the trunk line 1 and the branch line 2 are simultaneously supplied to the extruder to apply the insulating coatings 4a and 5a,
The conductors 4a and 5a are connected at a required pitch, and a mold insulating coating 9 is formed on the portion.

[0019]

Since the present invention is constructed as described above, the work of supplying and distributing electricity becomes extremely easy. Also, winding on a drum can be performed in the same manner as a single cable.

[Brief description of drawings]

FIG. 1 is a partial front view of an embodiment of an electric wire for distribution.

FIG. 2 is a partial cutaway view of the same embodiment.

FIG. 3 is a perspective view of a C-type connector.

FIG. 4 is a sectional view for explaining the manufacture of the same embodiment.

FIG. 5 is an explanatory diagram of power supply / distribution of the embodiment.

FIG. 6 is a partial perspective view of another embodiment of the power distribution wire.

FIG. 7 is a cross-sectional view of another embodiment of the power distribution wire.

FIG. 8 is a sectional view of another embodiment of the power distribution wire.

[Fig. 9] Illustration of standardized supply and distribution of electricity to buildings

FIG. 10 is a sectional view for explaining a conventional mold insulating coating.

[Explanation of symbols]

 1, P Main line 2, S Branch line 3 Power supply target 4 Main line conductor 4a Main line insulation layer 5 Branch line conductor 5a Branch line insulation layer 6, c C-type connector 7 Main line / branch line connection part 8, Q Molding mold 9 Mold Insulation coating 11 Branch line cutting part 20 Narrow section neck

Claims (3)

[Claims] 1. A large-diameter electric wire 1 serving as a trunk line and a small-diameter electric wire 2 serving as a branch line are arranged in parallel over the entire length, and insulating layers 4a and 5a of both electric wires 1 and 2 are partially peeled off with a constant pitch. An electric wire for distribution, characterized in that both of the electric wires 1 and 2 are electrically connected at the peeled portion, and a mold insulating coating 9 is further formed on the electric wire. 2. The insulation layers 4a, 5a of the large-diameter electric wire 1 and the small-diameter electric wire 2 are integrally extruded, and the insulation layers 4a, 5a of the large-diameter electric wire 1 and the small-diameter electric wire 2 have a small cross section. The electric wire for distribution according to claim 1, wherein the electric wires are connected by a neck portion (20). 3. The electric wire 2 is branched from the main line 1 at regular intervals, and when the branch line 2 is drawn into the power supply / distribution target 10, the distribution electric wire according to claim 1 or 2 is provided along the main line path. It is characterized in that it is laid, the small-diameter electric wire 2 is cut at an appropriate position between the pitches, the cut small-diameter electric wire 2 is peeled from the large-diameter electric wire 1 to form a branch line S, which is drawn into the power supply / distribution target 10. A standardized method of supplying and distributing electricity to buildings.