JPH0343622Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an optical power line composite cord, which is a form of optical indoor line used for transmission lines in optical subscriber systems, optical LAN systems, etc.

[Conventional technology]

Conventionally, this type of optical power line composite cord has not been put to practical use, and if necessary, for example, it is formed along an envelope drawn on the outer periphery of power line cores arranged in parallel. A method is used in which a grooved spacer with a circular cross section is inserted into the gap.

[Problem that the invention attempts to solve]

In the conventional method of inserting a grooved spacer with a circular cross section into the gap between the power supply cores and the envelope, which is done as necessary, for example, the outer diameter of the insulation coating is 5 mmφ. The outer diameter of the grooved spacer with a circular cross section that matches the shape is approximately 1 mmφ, and it is almost impossible to form an optical fiber storage groove in a power cord with this structure or insert an optical fiber into it due to the structure. It is.

[Means for solving problems]

This invention solves the conventional problems by arranging power supply cores in parallel, and creating an envelope line drawn along the surface of the power supply core and a gap formed between the power supply cores arranged in parallel. The plastic spacer has a shape that matches the shape of the gap, which is inserted into the spacer, and the plastic spacer has a groove with a rectangular cross section on the outer periphery along the envelope, and an optical fiber tape is attached to one side of the groove. The present invention provides an optical power line composite cord characterized by having a structure in which a core wire is housed and a tensile strength member is housed in the other side of the groove.

[Effect]

This invention has a structure in which a plastic spacer with a rectangular groove, which is shaped differently to match the shape of the gap, is inserted into the gap between the power cords in which the power cores are arranged in parallel. Since an optical fiber tape core and a tensile strength body can be housed in each of the cables, a composite optical power line cord can be realized, and power supply and information transmission can be performed with a single cord, making it ideal for indoor wiring in buildings, especially for each room. 30mmφ
When wiring is carried out through a pipe with a small diameter, a single wire is sufficient, and the flexibility of the cord itself according to the present invention allows for smooth construction.

Furthermore, it can be used as is for floor wiring or as a moving cord within a room, and can be applied to multiple purposes with the same structure. Also in this case, since only one cord is required, it is easy to handle and is also preferable from the viewpoint of preserving the aesthetics of the room.

Optical fibers can be stored by stacking 4 to 5 tape core wires in a square groove with a rectangular cross section.
It is possible to create optical fibers with as many fibers as the same number of fibers, and the number of fibers can be selected as appropriate with the same groove structure.

Since the irregularly shaped plastic spacer is provided with a groove having an appropriately sized rectangular cross section, damage to the optical fiber due to lateral pressure can be easily prevented. Furthermore, by using vinyl as the material of the spacer, the cord itself can be made to maintain its flexibility and flame retardance as a whole. Examples will be described below based on the drawings.

〔Example〕

FIG. 1 shows a cross-sectional structure of an embodiment of the optical power line composite cord of the present invention. 1 is an optical fiber tape core, 2
31 and 32 are tensile strength members, 31 and 32 are deformed plastic spacers, 41 and 42 are power supply insulated wire cores (hereinafter referred to as power supply wire cores), 5 is a jacket, and 61 and 62 are provided on plastic spacers 31 and 32. It's a groove. FIG. 2 shows a cross-sectional structure of a specific example of the optical fiber tape core 1 housed in the groove 61, which has a width of 1.6 mm and a thickness of 0.5 mm. FIG. 3 shows a cross-sectional structure of an embodiment of differently shaped plastic spacers 31, 32.

Power supply core 4 with vinyl coating on copper conductor
1 and 42 are arranged in parallel. Power supply core 4
1 and 42, and the outer periphery side has an appropriate radius of curvature, and the optical fiber tape core 1 is placed in the center.
Plastic spacers 31 and 32 provided with grooves 61 and 62 that form a gap with a rectangular cross section for accommodating the tensile strength member 2 are arranged parallel to the gap within the envelope of the power supply cores 41 and 42.

The plastic spacers 31 and 32 can be easily manufactured using a plastic molding extruder used in the manufacture of ordinary electric wires. Also plastic spacer 3
As the material of Nos. 1 and 32, polyethylene, vinyl, etc. are used, but vinyl is preferable from the viewpoint of processability and intended use.

In the grooves 61 and 62 of the rectangular gap portions of the plastic spacers 31 and 32, for example, one of the grooves 6
1, the optical fiber tape core 1 is placed in the groove 62 of the other side.
A tensile strength body 2 is housed in each of the housings. One or more optical fiber tapes 1 are stacked and inserted as required. The tensile strength member 2 may be selected from piano wire, steel wire, FRP, or the like having a size that fits within the groove 62 having a rectangular cross section, depending on the purpose of use.

Power supply cores 41, 42, optical fiber tape core 1, tensile strength member 2, and plastic spacer 3
1 and 32 are arranged in parallel in a predetermined positional relationship and a jacket 5 is applied to the outer periphery, thereby forming an optical power line composite cord.

Vinyl is usually used as the material for the outer cover 5, but rubber or the like may also be used. Further, if necessary, a tape layer such as plastic may be provided as a lower layer of the outer cover 5.

The optical power line composite cord of the present invention shown in this embodiment uses a general plastic molding extruder for manufacturing electric wires, and a power line core 41 is installed on the material supply side of the component.
42. By arranging the optical fiber tape core 1, the tensile strength member 2, and the plastic spacers 31, 32 in a predetermined positional relationship, and simultaneously feeding them into a plastic molding extrusion machine for manufacturing electric wires, applying the jacket 5 to the outer periphery, It can be easily manufactured in one step and can be manufactured at low cost.

[Effect of idea]

As explained above, the optical power line composite cord of the present invention has a structure in which a differently shaped plastic spacer with a groove for accommodating the optical fiber tape core and the tensile strength body is inserted into the gap between the power line cores. By providing this, it is possible to obtain an optical power line composite cord that retains the function of the power cord itself, has the same finished shape and dimensions, and accommodates multiple optical fibers.

The optical power line composite cord of the present invention can be used when wiring the power source and the optical fiber core wire in the same direction inside a building.
It can be applied to internal wiring in pipes, floor wiring, distribution, transportation, etc., and can supply a large number of optical fibers with the same structure, so it can be applied to indoor wiring in the communication field such as optical subscriber systems and optical LAN systems. The effect is great.

[Brief explanation of drawings]

Fig. 1 is a sectional structural diagram of an embodiment of the optical power/power composite cord of the present invention, Fig. 2 is a sectional structural diagram of an embodiment of an optical fiber tape core, and Fig. 3 is a sectional structural diagram of an embodiment of a plastic spacer having a different shape. . 1... Optical fiber tape core wire, 2... Tensile strength member, 31, 32... Plastic spacer, 4
1,42...Power supply core, 5...Sheath, 61,6
2...Groove.

Claims (1)

[Claims for Utility Model Registration] In the optical power line composite cord, power line cores 41 and 42 are arranged in parallel, and an envelope drawn along the surface of the power line core;
Plastic spacers 31 and 32 are inserted into the gap formed between the power supply cores arranged in parallel and have a shape that matches the shape of the gap, and the plastic spacer extends along the envelope line. It has grooves 61 and 62 with a rectangular cross section on the outer periphery thereof, and has a structure in which the optical fiber tape core 1 is housed in one of the grooves, and the tensile strength member 2 is housed in the other groove. An optical power line composite cord characterized by: