KR20020017389A - Optical fiber ribbon cable - Google Patents

Abstract

PURPOSE: An optical fiber ribbon cable is provided to reduce a weight of an optical cable by minimizing an external diameter of the optical fiber. CONSTITUTION: A tube(22) is used for protecting each optical fiber ribbon layer(10) when the optical fiber ribbon layers(10) are mounted on a multitude of units. The tube(22) is formed by an engineering plastic such as PP, PE, PBT, and PVC. A jelly compound(21) is inserted between the tube(22) and the optical fiber ribbon layer(10) in order to prevent permeation of moisture. A waterproof tape(23) is used for preventing the permeation of moisture from the outside. An external coating portion(25) is located at an outer portion of the waterproof tape(23). One or more pulling line(26) is inserted into the external coating portion(25) in order to prevent a damage of an optical fiber cable. The pulling line(26) is formed by a steel wire, a fiber glass, an aramid yarn, and a glass yarn.

Description

Ribbon Fiber Optic Cables {OPTICAL FIBER RIBBON CABLE}

The present invention relates to an optical fiber ribbon cable, and more particularly to a ribbon optical fiber cable configured to reduce the outer diameter of the cable and reduce the weight.

In general, a ribbon optical fiber cable, which is one of optical signal transmission media, realizes high density of optical cables, thereby increasing work efficiency by collective connection on a terminal. The ribbon optical fiber aligns a plurality of optical fibers coated with an ultraviolet curable resin in parallel, and forms a ribbon optical fiber by forming an external UV coating part with an ultraviolet curable resin. When the ribbon optical fiber formed by the UV coating part is laminated in a matrix structure, the ribbon optical fiber layer is formed.

1 is a cross-sectional view showing the configuration of a ribbon optical fiber cable according to an embodiment of the prior art, a plurality of tubes 12 for protecting a plurality of ribbon optical fibers 10, the tube 12 and a ribbon optical fiber ( 10) a jelly type compound 11 filled between the outer winding tape 13 and the outer winding tape 13 wound around the outer winding tape 13 to protect the plurality of tubes 12 and act as a waterproofing member. It consists of an outer sheath 15 which is enclosed. A jelly type compound 14 is filled between the outer winding tape 13 and the plurality of tubes 12 to cushion the external shock. In addition, the plurality of tubes 12 are located in the center and installed to surround the tensile line 16 coated by the sheath 17, thereby increasing the mechanical strength and tensile strength of the optical cable.

However, in the ribbon optical fiber cable as described above, since the tube is installed in a collective form around the tensile line, the outer diameter of the optical cable is increased, taking up a lot of installation space, and the weight is increased.

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a ribbon optical fiber cable configured to ensure a smooth installation space by minimizing the outer diameter of the optical cable.

Another object of the present invention to provide a ribbon optical fiber cable that can minimize the weight of the optical cable.

In order to achieve the above object, the present invention provides a ribbon optical fiber cable, which is filled between a tube for protecting each ribbon optical fiber layer when the ribbon optical fiber layer is mounted in a plurality of units, and the tube and the ribbon optical fiber. Jelly compound to prevent penetration, waterproof tape to prevent moisture ingress from the outside, outer coating positioned at the outermost side of the waterproof tape and the optical fiber cable to prevent damage from external mechanical influence In order to be characterized in that it consists of at least one or more tensile lines inserted into the outer coating.

1 is a cross-sectional view showing a ribbon optical fiber cable according to an embodiment of the prior art.

2 is a cross-sectional view showing a ribbon optical fiber cable according to an embodiment of the present invention.

<Description of Major Symbols in Drawing>

10: ribbon optical fiber 22: tube

23: waterproof tape 21, 24: jelly compound

25: Outer coating

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the case where it is determined that the gist of the present invention may be unnecessarily obscured, detailed description thereof will be omitted.

Figure 2 is a cross-sectional view showing a ribbon optical fiber cable according to an embodiment of the present invention, the ribbon optical fiber cable according to the present invention, each ribbon optical fiber 10 when the ribbon optical fiber layer 10 is mounted in a plurality of units Tube 22 to protect the, and the compound 22 is filled between the tube 22 and the ribbon optical fiber 10 to prevent moisture ingress, and a waterproof tape to prevent moisture ingress from the outside (23) and at least one inserted into the outer sheath 25 to prevent damage to the outer sheath 25 of the waterproof tape 23 and the optical fiber cable due to external mechanical influences. It consists of the tension line 26 mentioned above.

At this time, the tube 22 is formed of engineering plastics such as PP, PE, PBT, PVC, etc. in order to have abrasion resistance and corrosion resistance, and tightly configured to contact each corner of the ribbon optical fiber 10.

Thereafter, the plurality of tubes 22 are twisted in the helical direction or the SZ direction and then bound by a predetermined binder. At this time, the binder (Binder) is taped with a bind yarn (Yarn), polyester (Polyester Tape), etc. to form a cable core.

Tensile wire 26 is applied to the outer coating 25 is installed on both sides one by one symmetrical. As the tensile wire 26, steel wire, glass fiber, aramid yarn, glass yarn, or the like is used.

In addition, as the waterproofing material filled between the outer coating 25 and the tube, a waterproof powder or the like may be used in addition to the jelly compound.

As described above, the ribbon optical fiber cable according to the embodiment of the present invention reduces the outer diameter of the optical cable by tightly constructing the tube containing the ribbon optical fiber without using a center tension line, thereby reducing ribbon distribution in the connection enclosure. There is an effect of facilitating.

Claims (5)

Ribbon optical fiber cable, A tube for protecting each ribbon optical fiber layer when the ribbon optical fiber layer is mounted in a plurality of units; A jelly compound filled between the tube and the ribbon optical fiber to prevent moisture penetration; A waterproof tape for preventing moisture from penetrating from the outside; An outer coating positioned at the outermost portion of the waterproof tape; And at least one tension line inserted into the outer sheath to prevent the fiber cable from being damaged by external mechanical influences. The method of claim 1, And the tube is tightly configured to contact each corner of each of the ribbon optical fiber layers. The method of claim 1, A plurality of tubes each mounting a ribbon optical fiber are twisted in the helical direction or the SZ direction and then bound by a predetermined binder. The method of claim 1, The tube is a ribbon optical fiber cable, characterized in that formed of engineering plastics such as PP, PE, PBT, PVC to provide abrasion resistance and corrosion resistance. The method of claim 1, A ribbon optical fiber cable, characterized in that the tension line applied in the outer coating is installed on both sides one by one symmetrical.