KR20000047111A - Multiconductor optical cable having partition-folded groove - Google Patents

Abstract

PURPOSE: A multi-conductor optical cable having a partition-folded groove is provided to prevent generation of focused external force and to reduce leakage of optical signals due to the external force by forming a specific room so as for an optical fiber ribbon laminatedly inserted in the inside to constantly move, enhance optical fiber density by minimize a room between adjacent grooves, and to form a longer optical cable by means of a groove wound on a winding drum, both the same size. CONSTITUTION: A pair of notch grooves(21) separated at a constant interval are arranged to a length direction on a flexible member having a constant width. A plurality of folded grooves(20) form a specific room into which a plurality of optical fiber ribbons(30) are laminatedly inserted by putting up both ends(23) around the notch grooves(21). A specific coating layer surrounds outer circumstance of the folded grooves(20). A pair of notch homes(11) separated at a constant interval are arranged to a length direction on a flexible member having a constant width. A partition(15) projecting to the upside of a regular length is arranged on a central part of the notch grooves(11). A plurality of partition-folded grooves(10) form on both ends of the partition(15) a specific room into which a plurality of optical fiber ribbons(30) are laminatedly inserted by putting up both ends(23) around the notch grooves(21). The partition-folded grooves are arranged closely together in spiral around an enclosure line of the coating layer.

Description

Ultra-high fiber optic cable with divider folding groove

The present invention relates to a super multi-core optical cable having a partition folding groove, and more particularly, to provide a pair of notched grooves and a predetermined partition at the center of the band-shaped flexible member to fold up both sides of the member to form an optical fiber therein. The present invention relates to a super multi-core optical cable having a partition folding groove in which a pair of space portions into which ribbons are inserted are formed.

In general, the demand for optical cables is gradually increasing due to the spread of subscriber networks related to various communication services such as LAN, LOCAL AREA NETWORK, bidirectional communication, and video call.

There are various types of such optical fiber cables, depending on the use, and are largely divided into a cable installed outdoors, a cable installed indoors and a cable for entry installed between the outdoors and indoors.

Among these optical cables, outdoor cables may be installed for several tens of kilometers or thousands of kilometers, and when they are buried underground, they are dug into the ground and buried in soil. When an abnormality occurs in a track, it is very difficult to check and repair and replace cables. There is a very difficult disadvantage.

Therefore, to compensate for these disadvantages, a communication tunnel is artificially installed underground and a cable is installed in the tunnel (communication port).

In this case, the maintenance and replacement of the cable is easy, but there is a problem that the overall construction cost is enormous.

Therefore, in recent years, the optical cable construction method is mainly used to install a hollow pipe (Pipe) having a constant diameter in the ground and then insert the cable into the pipe.

The pipelines are installed between manholes and manholes at regular intervals because they are buried in lengths of hundreds to thousands of kilometers.

In this case, the rope is inserted into the pipeline, and the pipeline is buried underground, and the cable is installed in the pipeline by pulling and connecting the optical cable to the end of the rope.

In addition, in the case of the incoming optical cable, since the cable from the outdoor cable to the terminal box inside the building must be installed, a predetermined pipeline is formed through the wall of the building and drawn into the building.

1 is a cross-sectional view of a conventional ultra-core optical cable.

Referring to this, in the multi slot optical cable, a plurality of grooves 52 having a predetermined depth are formed spirally along the outer circumferential surface of the multi slot rod 50, and a plurality of optical fiber ribbons 30 are formed in the grooves 52. It is inserted to be stacked, and the central tension line 51 made of steel wire or high strength synthetic fiber is inserted on the central axis is configured to correspond to the external force.

In addition, a predetermined waterproof layer 53 is formed on the outer circumferential surface of the multi-slot rod 50, and a plurality of U grooves 60 are disposed on the outer surface of the multi-slot rod 50 so as to be in close contact with each other, and are spirally installed along the longitudinal direction. do.

The outer circumferential surface of the U groove 60 is a waterproof layer 54 coated with a waterproof tape to prevent moisture penetration, and the aluminum or steel to mitigate moisture penetration and external impact force on the outer circumferential surface of the waterproof layer 54. A metal coating layer 55 is formed, and a polystyrene (PE) coating layer 56 is formed on the outermost layer.

However, since the groove 52 or the U groove 60 of the multi-slot rod does not have enough space for the optical fiber ribbon 30 inserted therein to flow, the optical fiber ribbon 30 is in contact with the inner wall surface thereof. Intensive side pressure is applied to the phase, and such side pressure is transmitted to the optical core inside the optical fiber ribbon 30, which causes a problem that the optical signal is leaked.

In addition, since the U groove 60 is manufactured with both side walls faced up and wound on a winding drum, it is difficult to wind a large amount, so that the winding drum is too long to form a long cable of several kilometers or several tens of kilometers. There is a growing problem.

Since the U groove 60 is formed to have sufficient strength and thickness to correspond to an external force, the optical fiber density of the optical cable is reduced by the thicknesses of two walls connected between the adjacent U grooves 60 into which the optical fiber ribbons are inserted.

The main object of the present invention is to prevent the intensive external force from acting on one side of the optical fiber ribbon by forming a predetermined free space in which the optical fiber ribbon inserted to be stacked therein can be constantly flown, and thus the optical signal leakage It is to provide a multi-core optical cable having a partition folding groove to reduce the number of.

Another object of the present invention is to provide an ultra-concentric optical cable having a partition folding groove which can increase the optical fiber density by minimizing the space between the adjacent grooves.

It is still another object of the present invention to provide an ultra multi-core optical cable having a partition-foldable groove which allows a longer optical cable to be formed by grooves wound on winding drums of the same size.

1 is a cross-sectional view of a conventional multi-core optical cable,

2 is a cross-sectional view of a first embodiment of a multi-core optical cable having a partition folding groove according to the present invention;

3 is a cross-sectional view of a second embodiment of a multi-core optical cable having a partition folding groove according to the present invention;

4 is an enlarged cross-sectional view of the partition folding groove constituting the present invention;

5 is an enlarged cross-sectional view of the folding groove constituting the present invention.

*** Explanation of symbols for the main parts of the drawing ***

10: partition folding groove 11: notch groove

13: both sides 15: partition

16: folding groove 20: folding groove

21: notch groove 23: both sides

30: optical fiber ribbon 41: center tensile

50: multislot rod

According to a first embodiment of the present invention, in a multi-core optical cable having a center tensile line, a pair of notched grooves spaced at predetermined intervals in a central portion of an upper surface of a flexible member having a predetermined width are formed along a length direction of the member. Fold both sides of the member around the notch groove to insert a plurality of optical fiber ribbons stacked therein, and a plurality of folding grooves spirally installed to be in close contact with each other on the outer peripheral surface of the center tension line, and the outer peripheral surfaces of the plurality of folding grooves. A predetermined covering layer surrounding and a pair of notched grooves spaced at predetermined intervals in a central portion of the upper surface of the flexible member having a predetermined width are formed along the longitudinal direction of the member, and the pair of notched grooves central portions protrude upward in a predetermined length. Partitions are provided, and when both sides of the member are raised up around the notch groove, This consists of an optical fiber ribbon to be inserted to be laminated has a feature consisting of a plurality of slats folding groove to be brought into close contact with each other on the outer circumferential surface of the coating layer provided in a helical manner.

According to a second embodiment of the present invention, in a multi-core optical cable having a multi-slot slot rod, a pair of notched grooves spaced at predetermined intervals in a central portion of the upper surface of a flexible member having a predetermined width are formed along the length direction of the member. The pair of notched groove centers is provided with a partition protruding upward from a predetermined length, and when both sides of the member are folded up with respect to the notched groove, a plurality of optical fiber ribbons are stacked on both sides of the partition. It has a feature consisting of a plurality of partitions foldable grooves spirally installed in close contact with each other on the outer peripheral surface of the slot rod.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the first embodiment of the multi-core optical cable having a foldable groove according to the present invention will be described in detail.

Figure 2 is a cross-sectional view of a first embodiment of a multi-core optical cable having a foldable groove according to the present invention, Figure 4 is an enlarged cross-sectional view of the foldable groove constituting the present invention, Figure 5 is an enlarged cross-sectional view of the foldable groove constituting the present invention. .

Referring to this, the ultra-multi-core optical cable is arranged in a spiral along the longitudinal direction in a state that the plurality of folding grooves 20 are in close contact with each other on the circumferential surface of the center tensile line 41, the folding groove 20 The circumferential surface of the plurality of partition folding grooves 10 are arranged in a spiral so as to be in close contact with each other, a predetermined coating layer is formed on the circumferential surface of the folding groove 20 and the partition folding groove 10.

The partition folding groove 10 has a pair of notched grooves 11 spaced apart from each other by a predetermined distance in a central portion of the upper surface of the flexible member having a predetermined width along the longitudinal direction of the member, and the pair of notched grooves 11 The central portion is provided with a partition 15 protruding upward a predetermined length.

At this time, the partition 15 is made to have the same height as both sides 13 when the both sides 13 of the member is folded up around the notch groove (11).

Therefore, when the both sides 13 of the partition folding groove 11 are folded up around the notch groove 11, a pair of spaces in which a plurality of optical fiber ribbons 30 are inserted are stacked on both sides of the partition 15. Is formed.

In addition, a predetermined folding groove 16 is provided at both lower ends of the partition 15 so as to wind the partition folding groove 10 in a drum, and the partition 15 is formed on one side of the partition 15. It can be rolled up by lying down, and when the partition folding groove 10 is released, the partition 15 is elastically erected at a certain angle.

The foldable groove 20 is formed by forming a pair of notched grooves 21 spaced a predetermined distance from the center of the upper surface of the flexible member along the longitudinal direction of the member.

The coating layer is a predetermined waterproof layer 43 formed on the circumferential surface of the plurality of foldable grooves 20, the waterproof layer 44 formed on the circumferential surface of the plural partitions of the foldable groove 10 and coated to prevent moisture penetration; On the outer circumferential surface of the waterproof layer 44, a metal coating layer 45 made of aluminum or steel and a polystyrene coating layer 46 are formed on the outermost layer to mitigate moisture penetration and external impact force.

Looking at the operation of the first embodiment of the present invention by the above configuration as follows.

The ultra-multi-core optical cable is provided with a plurality of folding grooves 20 on the circumferential surface of the center tensile line 41, and after forming a predetermined waterproofing layer 43 on the circumferential surface, arranging a plurality of partition folding grooves 10. Then, a predetermined coating layer is formed on the outer layer.

At this time, the foldable groove 20 and the partition foldable groove 10 are to fold both sides 13, 23 of the flexible member about the notch grooves 11, 21 in the center to insert the optical fiber ribbon 30. Since the space to be formed is formed, both side surfaces 13 and 23 have a property of spreading outward at a predetermined angle by their elasticity.

Therefore, a predetermined free space is formed on both sides of the foldable groove 20 and the optical fiber ribbon 30 inserted into the partition foldable groove 10 so as to be stacked, and the optical fiber ribbon 30 flows relatively freely. The side pressure concentrated on any part of the optical fiber ribbon 30 in contact with the wall surface is prevented from being applied.

In addition, since the foldable groove 20 and the partition foldable groove 10 are formed by a pair of notched grooves 11 and 21 formed in a strip-shaped long flexible member, the amount wound on the winding drum of the same size. This increases the length of the optical cable can be formed longer.

At this time, the partition 15 of the partition foldable groove 10 is constantly laid down around the folding groove 16 of the lower end is wound on the drum.

In addition, the partition foldable groove 10 has a pair of spaces for inserting a plurality of optical fiber ribbons 30 into one stacked foldable groove 10 to be stacked, so that the space between the grooves and the grooves is spaced. It can be reduced, which increases the optical fiber density of the optical cable.

According to the experimental data, the ultra-multi-core optical cable having the partition folding groove was found to be arranged in the fiber core wire of 3680 core within 43mm diameter, it is known that the optical fiber density is very high.

Hereinafter, a preferred embodiment of a second embodiment of a multi-core optical cable having a foldable groove according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a cross-sectional view of a second embodiment of a multi-core optical cable having a foldable groove according to the present invention, Figure 4 is an enlarged cross-sectional view of the foldable groove constituting the present invention.

Referring to this, the multi-core optical cable is arranged in a spiral along the longitudinal direction in a state in which a plurality of partition folding grooves 10 are placed in close contact with each other on the circumferential surface of the multi-slot rod 50, such a multi-slot rod ( 50 and a predetermined coating layer are formed on the circumferential surface of the plurality of partition folding grooves 10.

The partition folding groove 10 has a pair of notched grooves 11 spaced apart from each other by a predetermined distance in a central portion of the upper surface of the flexible member having a predetermined width along the longitudinal direction of the member, and the pair of notched grooves 11 The central portion is provided with a partition 15 protruding upward a predetermined length.

At this time, the partition 15 is made to have the same height as both sides 13 when the both sides 13 of the member is folded up around the notch groove (11).

Therefore, when the both sides 13 of the partition folding groove 10 are folded up around the notch groove 11, a pair of spaces in which a plurality of optical fiber ribbons 30 are inserted are stacked on both sides of the partition 15. Is formed.

In addition, a predetermined folding groove 16 is provided at both lower ends of the partition 15 so as to wind the partition folding groove 10 in a drum, and the partition 15 is formed on one side of the partition 15. To be laid down by the winding, when the partition foldable groove 10 is released, the partition 15 is elastically erected at a predetermined angle.

The coating layer is a predetermined waterproof layer 53 formed on the circumferential surface of the multi-slot rod 50, the waterproof layer 54 formed on the circumferential surface of the plurality of partitions foldable groove 10 and coated to prevent moisture penetration, On the outer circumferential surface of the waterproof layer 54, a metal coating layer 55 made of aluminum or steel and a polystyrene coating layer 56 are formed on the outermost layer to mitigate moisture penetration and external impact force.

Looking at the operation of the second embodiment of the present invention by the above configuration as follows.

The multi-core optical cable has a predetermined waterproof layer 53 formed on the circumferential surface of the multi-slot rod 50, and then a plurality of partition folding grooves 10 are arranged on the outer circumferential surface of the waterproof layer 53, and a predetermined coating layer is provided on the outer layer. Form.

At this time, the partition foldable groove 10 folds both side surfaces 13 of the flexible member about the notch groove 11 in the center to form a space into which the optical fiber ribbon 30 is inserted, so that both side surfaces 13 are themselves. Due to the elasticity of the certain angle is going to be opened to the outside.

Therefore, a predetermined free space is formed on both sides of the optical fiber ribbon 30 inserted to be stacked in the partition folding groove, and since the optical fiber ribbon 30 flows relatively freely in the partition folding groove 10, the partition folding groove ( The side pressure concentrated on any part of the optical fiber ribbon 30 in contact with the inner wall surface of 10) is prevented from being applied. In addition, the partition foldable groove 10 is formed by a pair of notched grooves 11 formed in a strip-shaped long flexible member, so that the amount wound on the winding drum of the same size is increased, the longer the longer An optical cable can be formed.

At this time, the partition 15 of the center portion is laid down on the folding grooves 16 at the lower end of the center to be wound around the drum.

In addition, the partition foldable groove 10 has a pair of spaces for inserting a plurality of optical fiber ribbons 30 into one stacked foldable groove 10 to be stacked, so that the space between the grooves and the grooves is spaced. It can be reduced, which increases the optical fiber density of the optical cable.

According to the present invention, the multi-core optical cable having the partition folding groove has a predetermined margin in which the optical fiber ribbon can be uniformly flowed between both sides of the optical fiber ribbon inserted into the stack and the inner wall surface of the partition folding groove. A space is formed to prevent the side pressure concentrated on any part of the optical fiber ribbon from being applied.

In addition, the partition foldable groove has a pair of spaces for inserting a plurality of optical fiber ribbons stacked in one partition foldable groove, so that the space between the grooves and the grooves can be reduced to increase the optical fiber density of the optical cable. do.

The partition foldable groove is formed in a flat plate shape, so that the amount of the wound drum is increased in a winding drum of the same size, thereby forming an optical cable of a long length.

Claims (2)

In the ultra multi-core optical cable provided with a central tensile line 41, A pair of notched grooves 21 spaced a predetermined distance from the center of the upper surface of the flexible member having a predetermined width is formed along the longitudinal direction of the member to fold up both side surfaces 23 of the member about the notched groove 21. When the plurality of optical fiber ribbon 30 is inserted into the space is provided therein, a plurality of foldable grooves 20 spirally installed in close contact with each other on the outer peripheral surface of the center tension line 41; A predetermined coating layer surrounding an outer circumferential surface of the plurality of folding grooves 20; A pair of notched grooves 11 spaced apart from each other by a predetermined distance in the central portion of the upper surface of the flexible member having a predetermined width is formed along the longitudinal direction of the member, and protruded upward in a predetermined length in the center of the pair of notched grooves 11. The partition 15 is provided, and when the both sides of the member are folded up around the notch groove 11, a pair of space parts into which a plurality of optical fiber ribbons 30 are inserted are stacked on both sides of the partition 15. Ultra-fiber optical cable having a partition foldable groove, characterized in that made of a plurality of partitions foldable groove (10) spirally installed in close contact with each other on the outer peripheral surface of the coating layer. The method of claim 1, In the multi-core optical cable having a multi-slot rod 50, A pair of notched grooves 11 spaced apart from each other by a predetermined distance in the central portion of the upper surface of the flexible member having a predetermined width is formed along the longitudinal direction of the member, and protruded upward in a predetermined length in the center of the pair of notched grooves 11. The partition 15 is provided, and when the both side surfaces 13 of the member are folded up around the notch groove 11, a plurality of optical fiber ribbons 30 are stacked to be inserted into both sides of the partition 15. Ultra-multicore optical cable having a partition folding groove, characterized in that consisting of a plurality of partition folding grooves (10) spirally installed in close contact with each other on the outer peripheral surface of the multi-slot rod (50).