JP2003035850A - Optical composite insulated cable for customer station - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep construction cost low by realizing low priced and simplified wiring operation of optical cable for a customer station. SOLUTION: The optical composite insulated cable for a customer station is composed of a low voltage flat insulated cable part 3 for electric power having a plurality of parallelly arranged insulated core wires 1 and an optical fiber cable part 4 having an optical fiber ribbon 5 and arranged on the same plane as the insulated core wires. The low voltage flat insulated cable part 3 for electric power and the optical fiber cable part 4 are integrated with an overall coating having a thin connecting part 8 in-between.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical composite in-house insulated wire, and more particularly to an optical composite in-house insulated wire in which an optical fiber cable is combined with a low-voltage flat insulated wire for electric power.

[0002]

2. Description of the Related Art In recent years, as the speed and capacity of information communication have increased and it has become possible to support multimedia, the number of cases in which an optical fiber cable is pulled into a home is increasing even in a general home.

When the optical fiber cable is pulled into a general household, as shown in FIG. 6, the optical fiber core wire 15 branched from the overhead optical fiber cable 12 through the closure 13 and the pole switch 14 is combined with the overhead power line 11. A method of pulling in the WHM (watt meter) 17 under the eaves of the house 10 as the optical composite drop line 16 is implemented.

Wiring from the WHM 17 to the switchboard 20 and the optical connection box 21 provided inside the house 10 is independently performed by a low-voltage flat insulated wire 18 for electric power and an optical fiber cable 19 for domestic wiring.

FIG. 7 is a sectional view showing an example of a conventional low-voltage flat insulated wire for electric power, in which three low-voltage insulated wire cores 1 for electric power are arranged in parallel, and a coating 72 is provided on the outer periphery thereof.

FIG. 8 is a cross-sectional view showing an example of an optical fiber cable for home wiring, in which tensile strength wires 82 and 82 are arranged on both sides of the optical fiber 81 so as to be spaced apart from each other, and a coating 83 is collectively provided on the outer circumference thereof. Has been.

When the optical fiber cable 19 for in-home wiring shown in FIG. 8 is wired in the house, if the house 10 is an existing one, the in-house optical fiber cable 19 is fixed to the wall in the house with a staple or a wire protector. However, if the house 10 is a new one, it is necessary to provide a protective tube in the beam or wall of the house, and to install the optical fiber cable 19 for home wiring in the protective tube. (The so-called single in-house back wiring method) is adopted.

[0008]

However, the conventional in-house wiring method for optical cables such as the above-mentioned optical fiber cable for in-house wiring has some problems as described below. (1) The wiring of the optical cable is different from the wiring of the low-voltage flat insulated wire for electric power, and a member such as a protective tube for protecting the optical cable is additionally required, which leads to an increase in cost. (2) As a cable for wiring from the WHM 17 to the inside of the house 10, as shown in FIG. 9, in the gap between the twisted bodies of the three insulating coated conductors 91, together with the buffer material (or interposition) 93, the optical fiber core wire 92 is provided. Although an optical composite in-home insulated wire in which is arranged is considered, a process of twisting the insulating coated conductor 91 and then compounding the optical fiber core wire 92 is required to manufacture this optical combined in-home insulated wire, which is expensive. It becomes something like.

Therefore, the present invention has been devised to effectively solve such a problem, and its purpose is to reduce the cost and simplify the wiring work in the home of the optical cable.
It is intended to provide an optical composite in-house insulated wire that can keep construction costs low.

[0010]

To achieve the above object, the present invention comprises a low-voltage flat insulated wire portion for electric power having a plurality of insulated wire cores arranged in parallel, and at least one optical fiber. An optical fiber cable portion arranged in the same plane as the arrangement of the plurality of insulated wire cores, wherein the low-voltage flat insulated wire portion for power and the optical fiber cable portion have a thin connecting portion between them. It is an optical composite in-house insulated wire that is integrated by collective coating.

It is preferable that the optical fiber is an optical tape core wire in which the optical fibers are arranged in parallel and covered together, or a laminated body of the optical tape core wires.

The optical fiber may be an optical fiber unit in which a plurality of optical fibers are twisted around the outer circumference of a tensile strength wire.

Further, as the above-mentioned optical fiber, it is possible to use an optical fiber cable for home wiring in which tensile strength wires are arranged in parallel on both sides of the optical fiber.

Further, it is desirable that the connecting portion has slits formed intermittently in its longitudinal direction.

Further, it is desirable that the outer diameter of the optical fiber cable portion is smaller than the thickness of the low-voltage flat insulated wire for electric power.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Next, preferred embodiments for carrying out the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view showing an embodiment of an optical composite in-house insulated wire according to the present invention.

In FIG. 1, reference numeral 1 is a low-voltage insulating core for electric power made of an insulating coated conductor. In the present embodiment, a jacket 2 is provided on the outer periphery of three low-voltage insulating cores 1 for electric power. A low voltage flat insulated wire portion 3 is formed.

Reference numeral 5 denotes an optical tape core wire in which a plurality of (four in the drawing) optical fibers are arranged in parallel and collectively covered, and a jacket (6) is provided via a cushioning material (or intervening material) 6 which is vertically provided on the outer circumference thereof. 7
Is provided and the optical fiber cable portion 4 is formed.

The low-voltage flat insulated wire for electric power 3 and the optical fiber cable portion 4 are connected and integrated by a thin connecting portion 8, which is composed of three low-voltage insulating wire cores for electric power 1 and an optical tape core. It is formed by simultaneously extruding the jackets 2 and 7 and the connecting portion 8 together with the wires 5 arranged in parallel.

The height (distance between the low-voltage flat insulated wire for electric power 3 and the optical fiber cable 4) and the thickness of the connecting portion 8 are as follows.
It is appropriately selected from the range of 7.0 mm or less and 0.5 mm to 5.0 mm, respectively.

For example, the low-voltage flat insulated wire for electric power 3 has a thickness of 7.6 mm, and the optical fiber cable 4 has an outer diameter of 6.
In the case of 0 mm, the height and thickness of the connecting portion 8 are 2.0 mm and 1.0 mm, respectively.

As shown in FIG. 2, the connecting portion 8 is provided with slits 9 intermittently in the longitudinal direction of the cable. The length of the connecting portion 8 and the length of the slit 9 in the longitudinal direction of the cable are each 10 mm. To 100 mm, 50 mm to 5
It is appropriately selected from the range of 00 mm.

For example, the low-voltage flat insulated wire for electric power 3 has a thickness of 7.6 mm and the optical fiber cable 4 has an outer diameter of 6.
In the case of 0 mm, the length of the connecting portion 8 and the length of the slit 9 in the cable longitudinal direction are 20 mm and 130 m, respectively.
m (that is, the pitch of the slits 9 is 150 mm).

FIG. 3 is a cross-sectional view showing another embodiment of the optical fiber cable section 4, and as an optical fiber, as shown in FIG. 3 (a), one or more single-core optical fiber core wires 31 (for example, 40 3), or as shown in FIG. 3B, an optical fiber unit 34 in which a plurality of optical fibers 32 (for example, 20) are twisted around the outer circumference of a tensile strength wire 33 may be used.

FIG. 4 is a cross-sectional view showing still another mode of the optical fiber cable portion 4, and the optical fiber cable portion 4 shown in FIGS. Cut groove 40 for easy removal of the optical fiber by splitting into
Are formed.

As shown in FIGS. 4 (a), 4 (b) and 4 (c), the optical fiber unit 4 in which a plurality of optical fibers are twisted around the outer periphery of the tensile strength wire by omitting the buffer material (or intervening material).
1, the optical fiber tape core wire 42 or the optical fiber cable 43 for in-home wiring may be directly coated, or, of course, as shown in FIGS. A cushioning material (or an intervening material) 6 may be vertically provided on the outer circumference of the optical fiber cable 43 for in-home wiring, and then a jacket may be applied.

The optical fiber unit 41 shown in FIG. 4A has the same structure as the optical fiber unit 34 shown in FIG. 3B, and the optical fiber cable 43 for in-home wiring shown in FIGS. It has the same configuration as that of FIG.

Further, in the above-described embodiment shown in FIGS. 1 to 4, when the optical fiber ribbon is used, a laminated body in which a plurality of optical fiber ribbons (for example, 10) are stacked is used. You may

FIG. 5 is an explanatory view showing a state in which the optical composite in-house insulated wire of the present invention is wired inside the house. The prior art shown in FIG. 6 is from the WHM 17 to the switchboard 20 and the optical connection box 21. The wiring is the optical composite home insulated wire 22 of the present invention.
The difference is that it is done in.

In other words, conventionally, the low-voltage flat insulated wire for electric power and the optical fiber cable had to be independently wired inside the house, but in the present invention, one optical composite in-house insulated wire 22 is used as a wall. Switchboard 2 after wiring inside
0 and the optical connection box 21 may be branched into a low-voltage flat insulated wire for electric power and an optical fiber cable, which simplifies the wiring work and reduces the construction cost.

[0032]

In summary, according to the present invention, it is possible to reduce the construction cost at a low price by simplifying the in-house wiring work of the optical cable.

[Brief description of drawings]

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

FIG. 2 is a side view showing an embodiment of the present invention.

3 (a) and 3 (b) are sectional views showing another embodiment of the present invention.

4 (a), (b), (c), (d) and (e) are sectional views showing other embodiments of the present invention.

FIG. 5 is an explanatory diagram showing a state in which the optical composite in-home insulated wire of the present invention is wired inside a house.

FIG. 6 is an explanatory diagram showing a state in which a conventional low-voltage flat insulated wire for electric power and an optical fiber cable for in-house wiring are wired in a house.

FIG. 7 is a cross-sectional view showing a conventional low-voltage flat insulated wire for electric power.

FIG. 8 is a cross-sectional view showing a conventional optical fiber cable for home wiring.

FIG. 9 is a cross-sectional view showing a conventional optical composite house insulated wire.

[Explanation of symbols]

1 Low voltage insulated wire core for electric power 3 Low-voltage flat insulated wire for power 4 Optical fiber cable section 5 optical tape core wire 8 connection

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoshihiro Takahashi             Hitachi, 1-1 Hidaka-cho, Hitachi City, Ibaraki Prefecture             Electric Wire Co., Ltd. Hidaka Factory (72) Inventor Akira Watanabe             Hitachi, 1-1 Hidaka-cho, Hitachi City, Ibaraki Prefecture             Electric Wire Co., Ltd. Hidaka Factory (72) Inventor Yoshio Ishibashi             Hitachi, 1-1 Hidaka-cho, Hitachi City, Ibaraki Prefecture             Electric Wire Co., Ltd. Hidaka Factory (72) Inventor Kenichi Furusawa             Hitachi, 1-1 Hidaka-cho, Hitachi City, Ibaraki Prefecture             Electric Wire Co., Ltd. Hidaka Factory (72) Inventor Masafumi Fukasawa             1-4, Mei Station, Nakamura-ku, Nagoya City, Aichi Prefecture               Hitachi Cable Co., Ltd., Chubu Branch F term (reference) 2H001 BB01 BB14 BB21 BB27 DD06                       DD11 FF02 HH02 MM08                 5G319 HA03 HB05 HC01 HD04 HE02                       HE04 HE07 HE21

Claims (6)

[Claims] 1. A low-voltage flat insulated wire portion for electric power having a plurality of insulated wire cores arranged in parallel, and at least one optical fiber having the same plane as the array of the plurality of insulated wire cores. An optical fiber cable portion to be arranged, wherein the low-voltage flat insulated wire for power and the optical fiber cable portion are integrated by a collective coating having a thin connecting portion between them. Composite in-house insulated wire. 2. The optical composite home according to claim 1, wherein the optical fiber is an optical tape core wire in which the optical fibers are arranged in parallel and collectively covered, or a laminated body of the optical tape core wires. Insulated wire. 3. The optical composite insulated electric wire according to claim 1, wherein the optical fiber is an optical fiber unit in which a plurality of optical fibers are twisted around the outer circumference of a tensile strength wire. 4. The optical composite insulated electric wire according to claim 1, wherein the optical fiber is an optical fiber cable for indoor wiring in which tensile strength wires are arranged in parallel on both sides of the optical fiber. 5. The connecting part has slits formed intermittently in a longitudinal direction thereof.
5. The optical composite in-house insulated wire according to claim 4. 6. The optical composite home insulation according to claim 1, wherein the optical fiber cable portion has an outer diameter smaller than a thickness of the low-voltage flat insulated wire for electric power. Electrical wire.