JP3121622B2 - Undercarpet cable - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to a flat cable coated with an insulating sheath on its periphery are arranged in parallel to the cable core, in particular, the separation between the cable cores in insulation sheath
The present invention relates to an undercarpet cable in which a strip portion is provided to improve a stripping property when a connector or the like is connected to a cable terminal portion.

[0002]

2. Description of the Related Art There is an undercarpet wiring system in which an ultra-thin cable (hereinafter, referred to as an undercarpet cable) is laid between a floor in an office and a carpet. This wiring system has many advantages such as excellent safety for walking and the like, clean appearance, and effective use of the floor surface, because all wiring to the floor is covered with carpet.

In the above-described wiring system, various cables for power lines, telephone lines, data lines, and the like are used. FIG. 7 shows an undercarpage used for the data lines.
Shows the Tsu-through cable. In the figure, the undercarpet cable 1 has a cable core 2 arranged inside and parallel to the longitudinal direction. An inner conductor 3 is provided inside the cable core 2. Cable core 2
For example, it has a structure in which it is covered with an insulator 4 such as polyethylene, and the entire outside is covered with an insulating sheath 5 made of heat-resistant vinyl or the like molded into a predetermined shape.

[0004] The undercarpet cable 1 having the above-described structure has a structure in which an insulating sheath 5 of the terminal portion is stripped to attach a connector or a terminal block to the terminal portion, and an insulating material of the cable core 2 is further removed. 4 must be removed to expose the inner conductor 3 to the outside. Therefore, conventionally, their coatings have been stripped by a method as shown in FIG. That is, in the case of a normal round coating, as shown in FIG. 8A, the coating 6 at the end can be relatively easily removed using a stripper 7 having a round blade in the coating 6. However, it has a deformed insulating sheath 5 as shown in FIG.
When the undercarpet cable 1 is used, a normal round-blade stripper 7 cannot be used.
As shown in FIG. 3B, while taking care not to damage the inner conductor 3 using the cutter 8, the insulating sheath 5 is gradually removed.
The method of removing it is adopted.

[0005]

The object of the invention is to be Solved A of the structure as described above
In down Zehnder carpet cable 1, it takes much labor to strip the insulation sheath 5 of the terminal portion, also, the insulator 4
Since it was difficult to peel off, the internal conductor 3 could be erroneously damaged.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to easily remove an insulating sheath when processing a cable terminal portion and to damage an inner conductor. An object of the present invention is to provide an undercarpet cable which is less likely to be given.

[0007]

SUMMARY OF THE INVENTION The present invention comprises a plurality of cables.
-Core is disposed in parallel at a distance, and a plurality of cable Bed
The insulation sheath is covered on the core with a flat cross section
An undercarpet cable with an insulating sheath,
It is located between multiple cable cores and extends in the width direction of the cable.
A separation section is provided along the length of the cable core
It is characterized by having been done.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing one embodiment of the present invention.
In this figure, the conventional undercarpet shown in FIG.
The same reference numerals are given to the same parts as the cable. Traditional
The difference from the undercarpet cable is that a separating portion 9 is provided between the cable cores 2 of the insulating sheath 5 along the longitudinal direction of the cable 1.

The above-mentioned cable can be manufactured by the following method. The insulating sheath of the undercarpet cable is generally made by extrusion. For this extrusion molding, an internal mold 10 (hereinafter, referred to as a nipple) as shown in FIG. 3 is usually used. In the figure, reference numeral 11 denotes guide holes through which the cable cores 2 pass, and are arranged in parallel by the number corresponding to the number of the cable cores 2. This nipple 10 is used as shown in FIG.

That is, an external die (hereinafter, referred to as a die) 12 is disposed outside the nipple 10 with a resin flow path 13 interposed therebetween, and molten resin is sent to the flow path 13. An insulating sheath 5 is formed outside the cable core 2 passing through the center of the cable core. In the present invention, as shown in FIG. 5, a nipple 20 having a rib 21 provided between the guide holes 11, 11 at the distal end of the conventional nipple 10 is used. Therefore, as shown in FIG. 6, when the die 12 is arranged outside the nipple 20 and the molten resin is caused to flow through the flow path 13, the resin does not flow into the portion where the ribs 21 exist. The separation part 9 is formed. In addition, it is necessary to consider that the separating portion 9 is not provided in a direction in which the mechanical strength of the undercarpet cable 1 is reduced.

[0011] Next, the underlayer manufactured by the above-described method is used.
A method of processing the terminal portion of the carpet cable will be described with reference to FIG. First, using a cutter, scissors, etc., as shown in FIG.
As shown in (A), the ear portions 1a on both sides of the undercarpet cable 1 are cut off by a predetermined size to make only the central insulating sheath portion 1b. Next, as shown in FIG. 9B, when the central insulating sheath portion 1b is pressed from both sides, the separating portion 9 is pressed.
The insulating sheath portion 1b is further separated vertically, and the internal cable core 2 is separated. Next, as shown in FIG. 9C, the bag-shaped insulating sheath 1b is cut off with scissors, nippers or the like. As a result, the inner cable core 2 is exposed. Since the remaining portion is the round insulator 4, the insulator 4 can be easily removed by a nipper having a round blade. Note that the ear 1a does not necessarily need to be cut off as shown in the figure, but can be cut off as long as pressing force can be applied from both sides to form the insulating sheath 1b into a bag shape.

Next, FIG. 2 is a perspective view showing a modification of the present invention. In this example, the separating unit 9 is connected to the adjacent cable core 2.
One end of the separating portion 9 is opened on the bottom side of the undercarpet cable 1 without being provided therebetween . In this modification, the cable core 2 inside the insulating sheath 5 can be separated by holding the both ends of the undercarpet cable 1 and bending the cable upward. Therefore, the terminal processing of the cable can be easily performed in the same manner as described above.

[0013]

As described above, according to the present invention, the insulation
Since the separating portion is provided between the cable cores of the cables, the cable core and the insulating sheath can be easily separated.
Therefore, when the connector or the terminal block is attached to the terminal portion of the undercarpet cable, the work efficiency is improved without labor, and the possibility that the inner conductor inside the cable core is damaged by the cutter or the like is also avoided.

[Brief description of the drawings]

FIG. 1 is a perspective view of an undercarpet cable of the present invention.

FIG. 2 is a perspective view showing a modified example of the undercarpet cable of the present invention.

FIG. 3 is a perspective view of a nipple used for manufacturing a conventional undercarpet cable.

FIG. 4 is a cross-sectional view showing a combined state of a nipple and a die used for manufacturing a conventional undercarpet cable.

FIG. 5 is a perspective view of a nipple used for manufacturing the undercarpet cable of the present invention.

FIG. 6 is a sectional view showing a combined state of a nipple and a die used for manufacturing the undercarpet cable of the present invention.

FIG. 7 is a perspective view of a conventional undercarpet cable.

FIG. 8A is a diagram showing an end processing method using a nipper. (B) is a figure which shows the edge processing method using a cutter.

9 (A), and (B) (C) is, Ann of the present invention
It is explanatory drawing which shows the order of the end part processing of a dark carpet cable.

[Explanation of symbols]

1 Undercarpet cable 2 Cable core 3 Inner conductor 4 Insulator 5 Insulation sheath 9 Separation part 10, 20 Nipple 21 Rib

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01B 7/08 H01B 7/00

Claims (1)

(57) [Claims] A plurality of cable cores are spaced apart and parallel.
And an insulating sheath on the plurality of cable cores.
Is covered with a flat cross section.
A Buru, the insulating sheath located between the plurality of cable cores
Continuous in the width direction of the cable, and
It is characterized by having a separation part along the length direction.
Undercarpet cable.