JPH08306236A - Power source cable for unit cable - Google Patents

Abstract

PURPOSE: To increase flexibility and make package connection of a grounding conductor possible by arranging the grounding conductor formed by forming an insulating cover on a single wire conductor always having an outer diameter of 1.6mm adjacent and parallel to a wire core formed by forming an insulating cover on conductors with the same size. CONSTITUTION: Wire cores 3, 3' formed by forming an insulating cover 2 made of polyvinyl chloride or the like on conductors having the same size are arranged in parallel, a grounding conductor 5 formed by forming an insulating cover made of polyvinyl chloride or the like on a single wire conductor having an outer diameter of 1.6mm is arranged next and in parallel to the wire core 3, then a protecting cover 6 made of polyvinyl chloride or the like is formed on the wire cores 3, 3' and the grounding conductor 5 in the lump. For example, even when two conductors for supplying electric power to OA equipment require the outer diameter of 2 or 2.6mm, the single wire conductor having an outer diameter of 1.6mm always meets the requirements of the grounding conductor. Flexibility of the whole cable is increased compared with the conventional cable, and package connection of the grounding conductor is made easy. The outer diameter of the completed cable is made small and handling is also made easy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power cable for a unit cable used as a power distribution cable for high-rise buildings, office buildings, housing complexes, etc. It relates to the structure of the power supply cable devised so that

[0002]

2. Description of the Related Art Conventionally, as a power distribution cable for a high-rise building, an office building, an apartment house, etc., a power supply cable for supplying electric power to OA equipment, TVs, lighting equipments, etc. is previously prepared according to a wiring diagram. The connected unit cable is being used.

Conventionally, a vinyl insulated vinyl sheet flat cable (VVF) having a structure as shown in FIG. 2 has been used as the power source cable. In FIG. 2, reference numeral 100 denotes a conductor, which is mainly made of a copper single wire conductor, is provided with a vinyl insulator 2, and the conductor 100 has the same size in all three cores.
In addition, 300 is a vinyl sheet.

One of the three cores is used as a ground wire, and although the ground wire is legally required to be a copper conductor having an outer diameter of 1.6 mm, for example, power is supplied to OA equipment. When a conductor having an outer diameter of 2.6 mm is required to supply the electric field, a conductor having an outer diameter of 2.6 mm is also used for the ground wire.

Therefore, in a unit cable in which the ground wire of each power cable must be wound and connected together, the ground wire is hard and inflexible, which makes it difficult to connect. .

Further, since the ground wire which is thicker than necessary is used, the finished outer diameter of the cable becomes large and the resources such as the conductor material and the insulating material are wasted.

[0007]

BACKGROUND OF THE INVENTION Specialized electric wire / cable manufacturers of more than 400 domestic companies that manufacture electric wires / cables as a business do not notice the above-mentioned drawbacks at all, and even now, as in the past, the ground wire is still used. The conductors of the same size are used in all three cores including.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the drawbacks described in the prior art, and distinguishes between the conductor size for supplying electric power and the size of the ground wire, and the ground wire is used. Always use a conductor with an outer diameter of 1.6 mm,
An object of the present invention is to provide a power cable for a unit cable, which has improved flexibility and can easily connect the ground lines together.

[0009]

[Means for Solving the Problems] A grounding structure in which two wire cores formed by applying insulation coating to conductors of the same size are arranged in parallel, and adjacent to this, a single wire conductor having an outer diameter of 1.6 mm is provided with insulation coating. The wires are arranged in parallel and a protective coating is applied over them all at once.

[0010]

For example, even when the two conductors for supplying electric power to the office automation equipment require an outer diameter of 2 mm or 2.6 mm, the ground wire is always a single wire conductor having an outer diameter of 1.6 mm. Therefore, the flexibility of the entire cable is improved as compared with the conventional one, and it becomes easy to collectively connect the ground lines. Also,
The outer diameter of the finished cable is reduced, making it easier to handle.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Referring to the drawings showing an embodiment of the present invention, as shown in FIG.
Grounded by arranging wire cores 3 and 3 ′ formed by applying an insulating coating 2 such as vinyl on the same side in parallel, and applying an insulating coating 2 such as vinyl on a single wire conductor 4 having an outer diameter of 1.6 mm adjacent to the cores. The wires 5 are arranged in parallel, and a protective coating 6 made of vinyl or the like is applied on the wires all at once.

Conductor 1
2 mm or 2.6 mm copper conductors are often used for. Although the ground wire 5 is arranged beside the wire core 3 ′ in FIG. 1, the invention is not limited to this.
The ground wire 5 may be arranged between the wire cores 3 and 3 ′.

[0013]

Since the present invention is constructed as described above, it has the following effects.

Since the ground wire is always a flexible single wire conductor having an outer diameter of 1.6 mm, regardless of the core of the power supply, it is easy to collectively connect the ground wires.

Since the finished outer diameter of the cable is reduced and the flexibility is improved, the handling becomes easy.

Since conductor materials, coating materials, etc. can be saved,
It is economical.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 conductor 2 insulator 3 wire core 3'wire core 4 single wire conductor with an outer diameter of 1.6 mm 5 ground wire 6 protective coating 100 conductor 200 vinyl insulator 300 vinyl sheath

Claims (1)

[Claims] 1. An insulating coating (2) on a conductor (1) of the same size.
A ground wire (5) is formed by arranging wire cores (3, 3 ') formed in parallel with each other, and adjoining this, and applying an insulating coating (2) to a single wire conductor (4) having an outer diameter of 1.6 mm. A power supply cable for a unit cable, which is arranged in parallel and further has a protective coating (6) collectively applied thereon.