JP2003331658A - Optical fiber/metal composite cable for indoor wiring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical fiber/metal composite cable for indoor wiring adaptable to simultaneously lay a metal communication cable and an optical fiber cable. <P>SOLUTION: The optical fiber/metal composite cable for indoor wiring is adapted such that an optical fiber 2 to which tension resistant fibers 1 are attached and a metal communication line 3 are disposed in parallel at a proper interval, and the optical fiber 2 and the metal communication line 3 are covered collectively with a sheath 4 substantially into the configuration of glasses. The resulting composite cable is, when they are torn and separated at a bridge a portion of the glasses-shaped sheath 4, useable as a metal communication cable and an optical cable, and hence permit them to be advantageously laid simultaneously. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber / metal composite cable for indoor wiring.

[0002]

2. Description of the Related Art Conventionally, as a communication cable for indoor wiring, a pair-twisted or quad-twisted communication cable (hereinafter simply referred to as a metal communication cable) mainly made of a copper conductor has been used. However, with the spread of the Internet, optical fiber cables have been used in place of metal communication cables because of the need for high speed and large capacity.

However, in using the optical fiber cable, the service charge is high and the optical fiber cable must be newly installed. The reality is that is not that widespread.

On the other hand, an xDSL server that realizes high-speed and large-capacity communication by using the existing metal communication cable.
The spread of services is remarkably widespread, and under the present circumstances, an xDSL service that can receive services at a low cost with existing metal communication cables is available rather than services using optical fiber cables with high service charges. The reality is that the number of subscribers to

However, in the future, it is expected that the speed will be higher and the capacity will be higher than that of the xDSL service, and that the service will be shifted to a service using an optical fiber cable.

When only a metal communication cable capable of supporting the current xDSL service is installed, in order to receive the service using the optical fiber cable in the future, a new optical fiber cable is newly provided. There is a problem of having to lay a bull.

Further, in order to support both the current xDSL service and the service using the optical fiber cable in the future, when the metal communication cable and the optical fiber cable are separately installed, Has the problem of twice the labor of laying space and laying work.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the problems described in the prior art, and is an optical fiber / metal composite for indoor wiring in which a metal communication cable and an optical fiber cable can be installed at the same time. The purpose is to provide a cable.

[0009]

The optical fiber / metal composite cable for indoor wiring according to the present invention is an optical fiber and a metal communication line (a metal communication cable before applying a sheath) in which tensile strength fibers are vertically provided. The cores are collectively defined as a metal communication line. The same applies to the following.) Are arranged in parallel at appropriate intervals,
The optical fiber and the metal communication line are collectively covered with a sheath in a substantially eyeglass shape.

In another optical fiber / metal composite cable for indoor wiring of the present invention, an optical fiber code and a metal communication cable are arranged in parallel at appropriate intervals, and the optical fiber code and the metal are connected. It is characterized in that the communication cable and the communication cable are covered with a sheath in a substantially spectacle shape, and if necessary, the sheath is made into a flat shape and the optical fiber cord is used. A notch may be formed in the flat-shaped case located above and below the boundary of the metal communication cable.

In still another optical fiber / metal composite cable for indoor wiring of the present invention, an optical fiber is arranged at an intermediate portion of two tension members arranged in parallel at appropriate intervals. A metal communication line is arranged in parallel at an appropriate distance from one of the two tension members, and the two tension members and the optical fiber and the metal communication line are bundled together. It is characterized in that the sheath is covered in a substantially spectacle shape, and notches are formed in the sheaths located above and below the optical fiber.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An example of an embodiment of the present invention will be described with reference to the drawings. In the optical fiber / metal composite cable for indoor wiring shown in FIG. 1, the optical fiber 2 vertically attached with the tensile strength fiber 1 and the communication line 3 are arranged in parallel at appropriate intervals, and the optical fiber 2 and the metal communication line are arranged. 3 and 3 are collectively covered with a sheath 4 in a substantially glasses shape.

Therefore, when the eyeglass-shaped sheath 4 is torn and separated from the bridge portion a, the optical fiber cables are respectively separated.
It can be used as it is as a cable and metal communication cable.

The optical fiber / metal composite cable for indoor wiring shown in FIG. 2 has an optical fiber cord 5 and a metal communication line in which a plastic resin b is applied on the tensile strength fiber 1 vertically provided around the optical fiber 2. 3, a metal communication cable 6 with a plastic coating c is arranged in parallel at an appropriate interval, and an optical fiber code 5 and a metal communication cable 6 are provided.
And are collectively covered with the sheath 7 in a substantially eyeglass shape.

Therefore, when the bridge-shaped portion a'of the eyeglass-like sheet 7 is torn off and separated, it can be used as it is as an optical fiber cable and a metal communication cable, respectively. In this example, the completed optical fiber code 5 and metal communication cable 6 are used, which is suitable for quick delivery.

In the optical fiber / metal composite cable for indoor wiring shown in FIG. 3, instead of the eyeglass-shaped sheath 7 shown in FIG. 2, a flat-shaped sheath 7'is provided with an optical fiber cord 5 and a metal. The communication cable 6 is collectively covered with the optical fiber code 5
Notches 8 and 8 are formed in the flat-shaped sheath 7'located above and below the boundary of the metal communication cable 6.

Therefore, from the notches 8 and 8 to the flat sheet
When the fiber 7'is torn and separated,
It can be used as a cable and metal communication cable. Although the cutouts 8 and 8 are provided above and below the flat-shaped sheath 7'in FIG. 3, the cutouts 8 and 8 may be provided on the left and right of the flat-shaped sheath 7 '. .

In the optical fiber / metal composite cable for indoor wiring shown in FIG. 4, the optical fiber 2 is arranged in the intermediate portion of two tension members 9 and 9 which are arranged in parallel at appropriate intervals. The metal communication lines 3 are arranged in parallel with each other at appropriate intervals from one of the two tension members 9, 9.
9, 9 and the optical fiber 2 and the metal communication line 3 are collectively covered with a sheath 10 in a substantially spectacle shape, and the notches 8 ', 8'in the sheath 10 located above and below the optical fiber 2.
Has been given. Since the optical fiber cable portion has the tension members 9 and 9, it has excellent characteristics with respect to the tension applied at the time of installation. The tension member 9 is made of steel wire, glass fiber FRP, aramid fiber FRP or aramid fiber.

Therefore, by tearing and separating from the bridge a "portion of the eyeglass-like sheet 10, it can be used as an optical fiber cable and a metal communication cable, respectively.

Further, from the cutouts 8 ', 8'to the sheath 10
The optical fiber 2 can be easily taken out by tearing.

[0021]

Since the present invention is constructed as described above, it has the following effects. There is no need to install a new optical fiber cable. A metal communication cable and an optical fiber cable can be installed at the same time. It is easy to separate the metal communication cable and the optical fiber cable. Easy to take out the optical fiber.

[Brief description of drawings]

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

FIG. 2 is a sectional view showing another embodiment of the present invention.

FIG. 3 is a sectional view showing another embodiment of the present invention.

FIG. 4 is a sectional view showing another embodiment of the present invention.

[Explanation of symbols]

1 tensile strength fiber 2 optical fibers 3 metal communication lines 4 series 5 optical fiber code 6 Metal communication cable 7, 7'siece 8,8 'notch 9 Tension member 10 series a, a'a "bridge part b plastic resin c plastic coating

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Claims (4)

[Claims] 1. An optical fiber (2) vertically attached with a tensile strength fiber (1) and a metal communication line (3) are arranged in parallel at appropriate intervals, and the optical fiber (2) and the metal communication line (3) are arranged. ) Together with the sheath (4) in a substantially spectacles-like shape, the optical fiber / metal composite cable for indoor wiring. 2. An optical fiber code (5) and a metal communication cable.
The cables (6) are arranged in parallel at appropriate intervals, and the optical fiber code (5) and the metal communication cable (6) are put together into a substantially spectacle shape with the sheath (7). Optical fiber / metal composite cable for indoor wiring characterized by being coated 3. The sheath (7) according to claim 2 is a flat sheet.
The flat type sheath (7 ') located above and below the boundary between the optical fiber code (5) and the metal communication cable (6), and the notches (8, 8). The optical fiber / metal composite cable for indoor wiring according to claim 2, characterized in that 4. An optical fiber (2) is arranged at the center of two tension members (9, 9) arranged in parallel at appropriate intervals, and the two tension members (9) are further arranged.
The metal communication line (3) is arranged in parallel at a proper distance from one tension member (9) of (9, 9), and the two tension members (9, 9) and the optical fiber (2) are arranged. ) And the metal communication line (3) are collectively covered with a sheath (10) in a substantially spectacle shape, and notches are formed in the sheath (10) positioned above and below the optical fiber (2). Optical fiber / metal composite cable for indoor wiring characterized by having (8 ', 8')