KR100320386B1 - High-fiber optical end cable branching device and branching method using it - Google Patents

Abstract

The present invention relates to a high-fiber single-ended cable branching device and a branching method using the same, the object of which is to provide a high-fidelity photonic single-cable branching device and a method of using the same can be easily branched operation.

The present invention provides an inlet through which the insulated photonic cable is drawn in, an outlet through which the insulated photonic cable is regularly branched and discharged, and a main housing having a branch member coupling part formed with a spiral groove at a predetermined position on an inner circumferential surface thereof, A central tensioning line fixing hole is formed at the center in the state of being spirally coupled to the branch member coupling part of the housing, and a main branching member having a plurality of branching holes formed in a direction parallel to the central tensioning line fixing hole on the surface thereof, and an outlet of the main housing. A flexible tube in which a plurality of optical fibers embedded in the optical end cable are uniformly distributed and discharged through the inside of the main branch member inserted into the branch hole of the main branch member so as to extend outwardly by a predetermined length; In the state provided at the entrance of the inlet is formed an inlet for the optical end cable is introduced A sub housing provided with a main member, a branch member coupling part having a spiral groove at a predetermined position on an inner circumferential surface thereof in a state where an inlet through which the flexible tube is introduced and an outlet through which single fiber optical fibers branched from the introduced flexible tube are discharged are provided; The sub branch member having a plurality of branch holes formed on the surface in the state of being spirally coupled to the branch member engaging portion of the sub housing, and fitted into the branch hole of the sub branch member so as to extend outward a predetermined length through the outlet of the sub housing. And a sub-retracting member formed with a protective tube through which the single-fiber optical fiber is discharged through the inside thereof, and a inlet through which the flexible tube is inserted at the center in a state provided at the inlet of the sub-housing.

According to the present invention, the branching device and the branching method using the fiber core cable for the high core is multi-branched single fiber optical fiber embedded in the fiber core cable for high performance even if a defect occurs in some of the single fiber optical fiber during operation, Since only the sub-branching operation is performed again, it is possible to prevent a case where the whole optical end cable cannot be damaged due to the failure of the single fiber.

In addition, the present invention is because the optical fiber embedded in the high-fiber optical fiber cable is divided into a plurality of bundles to the tray, and the sub-branch adjacent to the connection terminal to shorten the length to insert the single-fiber optical fiber into the protective tube, workability This can be improved and the single fiber can be prevented from being easily broken by brittleness.

Description

Fiber optic cable branching device for high core and branching method using the same

The present invention relates to a high-fiber photonic cable branching apparatus and a branching method using the same, and more particularly, to a high-fiber optical single-cable cable branching apparatus and a method of using the same, the defect is small and easy to branch operation.

In general, optical communication transmits light and exchanges information, and optical fibers made of glass fibers serve as mediators, which can transmit tens of thousands of times more information than electric communication by current coaxial cable.

Such optical cables are classified into outdoor cables installed outdoors, indoor cables connected from indoor terminal boxes to equipment, and cable for entering cables from outdoor junction boxes to indoor terminal boxes.

The outdoor cable is again classified into a cable installed in the air, a cable buried underground, and a cable installed on the sea floor. Indoor cables are cables installed inside buildings such as buildings, such as ceilings, floors, walls, and the like. Cables for connecting cables between outdoor cables and indoor cables are used for connection between short distances.

The incoming cable is an optical cable that is connected to the terminal box of the indoor from the junction box of the outdoor cable is used a lot of optical end cable, such optical end cable so that each optical fiber built therein corresponds to the connection terminal of the terminal box in the premises one to one. Since it must be connected, it must be branched into a plurality of single-fiber fibers at some point, and a branching device of a certain type is installed to protect the optical fiber at the point where the multi-fiber fibers branch to the single-fiber fibers.

However, in order to branch the high-fiber ends of the high-fidelity cables, when branching the whole high-fiber ends of the high-fidelity cables using a single branching device as in the prior art, as many branching holes as the number of single-core optical fibers of the fiber-optic cable should be formed in the branching devices. In addition, the optical fiber protective tube having a length capable of connecting the branched single-core optical fiber from the branch point to the connection terminal in the terminal box should be provided, and the work is very difficult, such as inserting the single-core optical fiber into the optical fiber protective tube one by one. There is this.

In addition, in the process of inserting the single-fiber optical fiber into the tube, if any single-fiber optical fiber is broken and a defect occurs, the failure rate of the branching operation is high, and the work efficiency is high, and the work efficiency must be discarded and the work must be performed again. There is a problem that this is very degraded.

In addition, since the number of branch holes of the branching device as described above should be formed to correspond to the core bow of the optical end cable, there is a problem that the size of the branching device must also be manufactured to a considerable size.

The main object of the present invention is to multi-branch single-fiber fiber of the high-fiber optical fiber cable, even if some of the single fiber is broken during operation, even if a defect occurs, the entire optical fiber cable is not disposed, only the corresponding sub-branch In other words, the present invention provides a branching device for a high-fidelity fiber-optic cable that does not require branching of the entire fiber-optic cable again and a branching method using the same.

Another object of the present invention is to multi-branch single-fiber optical fiber of the high-fiber optical fiber cable is divided into a plurality of optical fiber bundles in or outside the terminal box, and again branched to a single fiber optical fiber in a portion adjacent to the connection terminal The present invention relates to a branching device for a high-conducting optical end cable for which branching is easy, and the occurrence rate of defects can be reduced, and the branching method using the same can be reduced.

1 is an exploded perspective view of a high-fiber optical cable termination device according to the present invention,

2 is an exploded perspective view of a sub-branching apparatus constituting the present invention;

3 is an exploded perspective view of a high-fiber photonic cable splitter according to a modification of the present invention;

4 is an exploded perspective view of a sub-branch apparatus constituting a modification of the present invention;

5 is a cross-sectional view showing a branching state in the primary branching device of the present invention;

6 is a cross-sectional view showing a branching state in the sub-branching device of the present invention;

7 is a cross-sectional view showing a state of branching in the primary branching device constituting a modification of the present invention;

8 is a cross-sectional view showing a branching state in a sub-branching apparatus constituting a modification of the present invention;

9 is a cross-sectional view showing a state of the high-fidelity photoelectric cable branching apparatus according to the present invention installed in the terminal box of the premises

10 is a floor chart of a branching method of a high-fidelity optical end cable according to the present invention;

11 is a floor chart of a method for branching high-fiber optical ends cable according to a modification of the present invention.

*** Explanation of symbols on main parts of drawing ***

10: main housing 12: branch member coupling portion

13: outer shell fixing member coupling portion 15: inlet

17 outlet 20 main branch member

21: center tensile line fixing hole 23: branch hole

24: flexible tube 30: shell fixing member

33: screw portion 34: clamp portion

35: inclined surface 37: inlet

39: incision groove 40: fastening member

43: screw 45: tightening

50: optical star cable 51: center tensile

52: shell 60: sub-housing

70: sub branch member 80: outer shell fixing member

90: fastening member 100: terminal box

110: tray 111: connection terminal

150: slot type optical end cable 151: center tensile

152: jacket 155: optical fiber ribbon

In the branching device of the high-fidelity photonic cable according to the present invention, an inlet through which the photonic end cable is introduced is formed at one end thereof, and an outlet through which the incoming photonic end cable is regularly branched and discharged is formed at the other end thereof. The main housing is provided with a branch member coupling portion for forming a spiral groove over a predetermined section in the position, and a boss formed with a central tensioning line fixing hole in the center in the state of being spirally coupled to the branch member coupling portion of the main housing. A main branch member having a plurality of branch holes formed in a direction parallel to a center tensile line fixing hole, and fitted into the branch holes of the main branch member so as to extend outward a predetermined length through an outlet of the main housing, Flexible that a plurality of optical fibers embedded in the optical fiber cable is uniformly distributed and discharged And a main inlet member having an inlet through which the photonic end cable is introduced, and an inlet through which the flexible tube is introduced at one end thereof, and a flexible inlet at the other end thereof. The sub housing is provided with a branch member coupling portion having a spiral groove over a predetermined section at a predetermined position on the inner circumferential surface in a state where an outlet through which the single-fiber optical fiber branched from the tube is discharged is provided, For protecting the sub-branched optical fiber is discharged through the inside of the sub-branched member having a plurality of branched holes formed in the state and fitted into the branched hole of the sub-branched member so as to extend outward a predetermined length through the outlet of the sub-housing. The flag and the flag at the center in the state provided at the inlet of the sub-housing It has a feature consisting of a sub-retraction member formed with an inlet through which the sieve tube is introduced.

The main lead member and the sub lead member in the high-fiber optical end cable branching device according to the present invention and the outer fixing member coupling portion formed with a spiral groove formed over a certain period from the end to the inner side on the inner peripheral surface of the inlet side of the main housing and the sub housing; And an outer shell fixing member provided with a clamp part for holding the outer shell of the flexible end cable or the outer side of the flexible tube which is inserted through the central inlet in a state where the outer shell fixing member coupling portion of the main housing and the sub housing is spirally coupled to each other. It is characterized in that the fastening member for pressing to retract the clamp portion of the shell fixing member in the center line direction in the state that each of the outer shell fixing member engaging portion of the main housing and the sub-housing screw.

The high-strength optical fiber cable branching device according to the present invention is provided with a center iron fixing hole in the center in the state inserted into the flexible tube end, a fastener formed with a through hole in parallel with the center iron fixing hole on the surface, and the fixture The central iron wire protruding a predetermined length toward the front of the flexible tube in the state fixed to the center wire fixing hole, and the center wire fixing hole for fixing the center wire in the center of the sub-branch member is further formed.

The high-fiber optical end cable branching device according to a modification of the present invention has an inlet through which the slot-type optical end cable is inserted at one end thereof, and an outlet through which the slot-type optical end cable inserted into the other end is regularly discharged. The main housing is provided with a branch member coupling portion having a spiral groove over a predetermined section in a predetermined position of the inner circumferential surface in the state is provided, and the boss formed with a central tensioning line fixing hole in the center in the state of being spirally coupled to the branch member coupling portion of the main housing A main branch member having a plurality of branch holes formed in a direction parallel to the center tension line fixing hole, and fitted into a branch hole of the main branch member so as to extend outward a predetermined length through an outlet of the main housing. In the state, the optical fiber ribbon of the slotted optical cable is uniformly distributed through the inside thereof. The main tube is provided with a flexible tube discharged and discharged, a main inlet member having an inlet through which the slotted optical cable is inserted in the center in the state provided at the inlet of the main housing, and an inlet through which the flexible tube is introduced at one end thereof. The other end is formed with an outlet for branching and exiting the single-fiber optical fibers in the flexible tube introduced, the predetermined position of the inner peripheral surface is provided with a sub-member provided with a branch member coupling portion having a spiral groove over a predetermined section, the branch of the sub-housing Sub branch member having a plurality of branch holes formed on the surface in the state of being spirally coupled to the member engaging portion, and inserted into the branch hole of the sub branch member so as to extend outward a predetermined length through the outlet of the sub housing, and inside Protective tube and branched optical fiber in the flexible tube is discharged through the; In the state provided at the inlet of the probe housing, the center has a feature consisting of a sub-suction member attached to the flexible tube is rotated by a certain connecting bar in the inlet formed incoming state integrally with the sub-branch member.

In the high-fiber optical end cable branching device according to a modification of the present invention, the main lead member and the sub lead member have an outer sheath fixing member in which a spiral groove is formed over an interval from the end to the inner circumferential surface of the inlet side of the main housing and the sub housing. An outer shell fixing member having a coupling portion and a clamp portion for holding an outer shell of a slot-type optical cable or a flexible tube which is inserted through a central inlet in a state where the outer portion of the outer fixing member of the main housing and the sub housing is spirally coupled; And a fastening member configured to press the clamping portion of the shell fixing member to be retracted in the center line direction in a state in which the spiral housings of the main housing and the sub housing are respectively coupled to the spiral grooves.

According to the present invention, a method for branching a high-fiber optical fiber cable includes a main branching step in which a plurality of optical fibers embedded in the optical fiber cable are divided into a plurality of flexible tubes, and a single fiber optical fiber in the flexible tube is inserted into a protective tube. It is characterized by multiple branches of the sub branching step.

The main branching step in the branching method of the high-conductivity optical fiber cable according to the present invention and the modified example is inserted into the fastening member and the shell fixing member on the outer circumferential surface of the optical fiber cable in order to be located inside a predetermined length, the main branch member A preparation step of inserting a flexible tube into a branch hole of the fastener; and a step of installing a fixture for inserting the fastener into the flexible tube tip after the optical fiber ribbon in the flexible tube is discharged to the outside through the through hole of the fixture; And a branching step of inserting a central tensile line of the optically short cable into the central tensile line fixing hole of the main branch member and distributing and inserting a plurality of optical fibers of the optically short cable in a flexible tube coupled to the main branch member. The main branch member is positioned at a predetermined position of a center tensile line, and protrudes forward of the main branch member. Removing the center tension line and the center tension line fixing step of fixing the main branch member and the center tension line with a strong adhesive, inserting the main branch member in the main housing, and rotating the main housing to rotate the main branch member to the main housing The main branch member coupling step of installing in the branch member coupling portion in the inner part, and the shell fixing member is coupled to the shell fixing member coupling portion of the main housing, and tightening the shell fixing member with a constant force by using the fastening member It is characterized by consisting of a photonic end cable outer shell fixing step of fixing the outer shell of the cable.

The sub-branching step in the branching method of the high-conductivity optical fiber cable according to the present invention is inserted into the fastening member and the outer shell fixing member in turn on the outer peripheral surface of the flexible tube so as to be located inside a predetermined length, the branch of the sub branch member The preparation step of inserting the protective tube in the hole so as to protrude forward, and through the through hole of the fixture so that the optical fiber in the flexible tube is discharged to the outside, and fixed the center wire in the center wire fixing hole of the fixture and then flex the fixture After inserting the inside of the tip of the tube, the fixing fixture is fixed with epoxy resin, and the center wire is inserted into the center wire fixing groove of the sub branch member, and the single core optical fiber is branched in the protective tube coupled to the sub branch member. And a branching step of placing the branching member at a predetermined position on the center wire, After removing the center wire protruding in front of the base member, the center wire fixing step of fixing the sub branch member and the center wire with a strong adhesive, inserting the sub branch member into the sub housing, and rotating the sub housing to rotate the sub branch member The sub-branch member coupling step of installing the at least one branch member engaging portion in the sub-housing, and coupling the outer shell fixing member to the outer shell fixing member engaging portion of the sub-housing, and tightening the outer shell fixing member with a constant force using the fastening member. Tightening has a feature consisting of a flexible tube shell fixing step of fixing the shell of the flexible tube.

The sub-branching step in the branching method of the high-conductivity optical fiber cable according to a modification of the present invention is inserted into the branch hole of the sub-branching member so as to protrude forward, the fastening member and the outer shell on the flexible tube outer peripheral surface The preparation step of inserting the fixing member in sequence, the branching step of sequentially branching the single-fiber optical fiber discharged from the flexible tube in the protective tube coupled to the sub-branching member, and holding the outer shell fixing member, and rotates the sub-housing Combining the sub-branching member and the skin fixing member so that the sub-branching member and the skin fixing member are coupled to the branch member coupling part and the skin fixing member coupling part of the sub housing, respectively, and the skin fixing member is fixed using the fastening member. It consists of a flexible tube shell fixing step of tightening with force to fix the shell of the flexible tube It has the gong.

Hereinafter, with reference to the accompanying drawings for a preferred embodiment of a high-fiber optical fiber cable branching device according to the present invention will be described in detail.

1 is an exploded perspective view of a high-fiber optical end cable branching device according to the present invention, and FIG. 2 is an exploded perspective view of the sub-branching device constituting the present invention.

Referring to this, the branching device of the high-conductivity optical fiber cable is a main branching device in which the high-fiber optical fiber cable 50 is branched into several optical fiber bundles by a plurality of flexible tubes 24, and the flexible tube ( It is divided into a sub-branching device for branching the optical fiber 55 embedded in the 24 back to the single-fiber optical fiber 57 of FIG.

The main branch device is provided with a main branch member 20 to which the center tensile line 51 of the photonic end cable is fixedly coupled in a state where a plurality of flexible tubes 24 are installed inside the cylindrical main housing 10, The main inlet member 40 is installed at the inlet side of the main housing 10 to fix the sheath 52 of the optical end cable 50.

The main housing 10 has an inlet 15 through which the photonic end cable 50 is introduced at one end thereof, and an outlet 17 through which the incoming photonic end cable 50 is regularly branched and discharged at the other end thereof. And a branch member coupling portion 12 having a spiral groove over a predetermined section is formed at a predetermined position of the inner circumferential surface, and an outer shell fixing member coupling portion having a spiral groove from the end portion to the inner side on the inner circumferential surface of the inlet side. (13) is formed.

The main branch member is formed by protruding a predetermined length of a boss 22 having a central tension line fixing hole 21 formed in the center in a spirally coupled state to the branch member coupling portion 12 of the main housing 10. It is provided with a plurality of branch holes 23 formed in parallel with the center tension line fixing hole 21.

The flexible tube 24 is fitted into the branch hole 23 of the main branch member 20 so that the flexible tube 24 extends out of a predetermined length through the outlet 17 of the main housing 10 in a state where the flexible tube 24 is coupled to each other. Through the optical fiber cable 50, a plurality of optical fibers 55 are constantly distributed and discharged.

The main inlet member is a clamp portion for holding the sheath 52 of the photonic end cable that is introduced through the inlet 37 of the center in a spirally coupled state to the outer shell fixing member coupling portion 13 of the main housing 10 ( Tightening to press the clamp portion 34 of the shell fixing member in the center line direction in a spirally coupled state to the outer shell fixing member 30 and the outer shell fixing member engaging portion 13 of the main housing 34 is provided. It consists of the member 40.

The outer shell fixing member 30 is formed on the outer peripheral surface of the distal end of the screw portion 33 of a predetermined section that is spirally coupled to the outer shell fixing member coupling portion 13 of the main housing 10, from the back of the screw portion 33 Clamp portion 34 protruding in the opposite direction to the entry of the optical end cable 50 is provided.

The clamp portion 34 is tapered at a predetermined angle so as to protrude from the rear surface of the screw portion 33 in the opposite direction of the inlet of the optical end cable 50 and to retract in the direction of the center line, and at the end of the inclined surface 35. In the state extending in the center line direction, the flange 36 is formed at the center thereof with the inlet opening 37 through which the inlet cable 50 is introduced, and the inlet extending from the inlet 37 toward the inside of the housing 10. It consists of a boss 38 in close contact with the outer peripheral surface of the short cable (50).

In addition, since the plurality of cutting grooves 39 cut in the longitudinal direction are formed in the clamp portion 38 and are divided into a plurality of clamp portions, the clamping member 40 presses the clamp portion 34 toward the center line direction. In this case, the clamp portion 34 is retracted in the direction of the center line while being constantly deformed about the cutting groove 39.

The fastening member 40 has a threaded portion 43 spirally coupled to the fastening member coupling portion 13 of the main housing 10 on the outer peripheral surface of the front end portion, and is formed from an end of the threaded portion 43 by an optical end cable ( 50) Tightening portion 45 is formed to form a taper of a predetermined angle to protrude in the opposite direction to the retracted in the center line direction.

On the outer circumferential surface of the rear of the screw portion 43 of the tightening member 40, a bolt-shaped pivot 44 is provided to easily couple the tightening member 40 to the main housing 10, and the pivot 44 The extension part 47 which retracts from the back side toward the center line direction is provided. At the end of the extension part 47, a predetermined inlet 48 through which the optical end cable 50 is introduced into the main housing 10 is formed.

Therefore, when the fastening member 40 is coupled with a constant force so as to be in close contact with the outer skin fixing member 30, the tightening portion 45 of the fastening member 40 centers the clamp portion 34 of the outer skin fixing member Pressurized to retract.

As shown in FIG. 2, the sub-branching device is provided with a sub-branching member 70 in which a plurality of protective tubes 74 are installed in the cylindrical sub-housing 60, and is installed at the inlet 65 of the sub-housing 60. It is made of a sub-retraction member for fixing the outer shell of the flexible tube (24).

The sub housing 60 is provided with an inlet 65 through which the flexible tube 24 is introduced at one end thereof, and the single core optical fiber 57 discharged from the flexible tube 24 introduced at the other end thereof uniformly. The outlet 67 which is branched and discharged is provided, and a branch member coupling part 62 having a spiral groove is formed at a predetermined position on the inner circumferential surface, and a spiral groove is formed on the inner circumferential surface from the end to the inner side on the inlet side. An outer shell fixing member coupling portion 63 is formed.

The sub-branch member 70 is formed by protruding a predetermined length of a boss 72 having a central wire fixing hole 71 formed at a central portion thereof in a spirally coupled state to the branch member coupling portion 62 of the sub-housing 60. On the surface, the number of branch holes 73 corresponding to the number of the single core optical fiber 57 in the direction parallel to the center wire fixing hole 71 is provided.

A center iron fixing hole 26 is formed in the center of the front end of the flexible tube 24, and a through hole 27 is formed in a direction parallel to the center iron fixing hole 26 on a surface thereof to form the flexible tube. A fixing device 25 is formed so that the optical fiber 55 in the 24 is distributed and discharged to the outside, and is fixed with an epoxy resin.

In addition, a strong adhesive in a state in which the center wire 28 of a predetermined length is inserted into and fixed to the center wire fixing hole 26 of the fastener 25 and inserted into the center wire fixing hole 71 of the sub branch member 70. Is fixed.

The protective tube 74 is fitted into the branch hole 73 of the sub branch member 70 so as to extend outward through a predetermined length through the outlet 67 of the sub housing. The single optical fiber 57 of the tube 24 is constantly distributed and discharged.

The sub inlet member is a clamp portion for holding the outer skin of the flexible tube 24 which is introduced through the inlet 87 of the center in a spirally coupled state to the outer shell fixing member coupling portion 63 of the sub housing 60 ( 84 is provided so as to retract the clamp portion 84 of the shell fixing member in the centerline direction in a spirally coupled state with the shell fixing member 80 provided with the shell fixing member engaging portion 62 of the sub housing 60. It consists of a fastening member 90 to pressurize.

The outer shell fixing member 80 is formed with a screw portion 83 of a predetermined section that is spirally coupled to the outer shell fixing member engaging portion 63 of the sub-housing 60 on the outer peripheral surface of the front end portion, from the rear surface of the screw portion 83 Clamp portion 84 protruding in the opposite direction to the flexible tube 24 is provided.

The clamp portion 84 protrudes from the rear surface of the threaded portion 83 in a direction opposite to the introduction of the flexible tube 24, and forms an inclined surface 84 that forms a taper at a predetermined angle so as to retract in the direction of the center line, and at the end of the inclined surface 84. It extends inwardly of the sub housing 60 from the inlet 87 and the flange 86 and the inlet 87 is formed in the center of the flexible tube 24 is introduced into the center line in the state extending in the center line direction It consists of a boss 88 in close contact with the outer peripheral surface of the flexible tube (24).

In addition, since the plurality of cutting grooves 89 cut in the longitudinal direction are formed in the clamp portion 84 and divided into the plurality of clamp portions, the clamping member 90 presses the clamp portion 84 toward the center line direction. If so, the clamp portion 84 is retracted in the direction of the center line while constantly being elastically deformed about the incision groove 89.

The fastening member 90 has a threaded portion 93 which is spirally coupled to the outer shell fixing member engaging portion 63 of the sub-housing 60 on the outer peripheral surface of the tip portion, and a flexible tube from the tip of the threaded portion 93. (24) A tightening portion 95 is formed to taper at a predetermined angle, protruding in the direction opposite to the pulling and retracting in the centerline direction.

A bolt head-shaped rotating part 94 is provided on the outer circumferential surface of the screw 93 of the tightening member 90 so as to easily couple the tightening member 90 to the sub housing 60, and the rotating part 94 is provided. The extension part 97 which retracts from the back side toward the center line direction is provided. At the end of the extension 97, a predetermined inlet 98 is formed through which the flexible tube 24 enters the sub housing 60.

Therefore, when the fastening member 90 is coupled with a constant force so as to be in close contact with the outer skin fixing member 80, so that the tightening portion 95 of the fastening member to retract the clamp portion 84 of the outer skin fixing member in the center line direction. Pressurized.

3 is an exploded perspective view of the high-fiber optical end cable branching device according to the modification of the present invention, and FIG. 4 is an exploded perspective view of the sub-branching device constituting the modification of the present invention.

Referring to this, the branching device of the high-fiber photoelectric cable is a main branching device in which the high-fiber slot-type optical fiber cable 150 is branched into a plurality of optical fiber bundles by a plurality of flexible tubes 24, and the flexible The optical fiber ribbon 155 embedded in the tube 24 is divided into a sub-branching device that branches back to single-fiber optical fiber.

The main branch device has a main branch member 20 in which a plurality of flexible tubes 24 are installed in a state in which the center tensile line 151 of the slotted optical end cable is fixedly coupled to the cylindrical main housing 10. The main inlet member is provided at the inlet 15 side of the main housing 10 to fix the outer shell 152 of the slotted optical cable.

The main housing 10 has an inlet 15 through which the slot-type photonic end cable 150 is inserted at one end thereof, and the slot-type photoelectric end cable 150 inserted at the other end is regularly branched and discharged. An outlet 17 is provided, and a branch member coupling part 12 having a spiral groove is formed at a predetermined position on the inner circumferential surface, and a spiral groove is formed on the inner circumferential surface toward the inlet 15 over an interval from the end to the inner side. An outer shell fixing member coupling portion 13 is formed.

The main branch member 20 is formed such that the boss 22 having a central tension line fixing hole 21 is protruded a predetermined length in the center in the state of being spirally coupled to the branch member coupling portion 12 of the main housing 10. On the surface, a plurality of branch holes 23 formed in a direction parallel to the center tension line fixing hole 21 are provided.

The flexible tube 24 is inserted into and coupled to the branch hole 23 of the main branch member so as to extend out of a predetermined length through the outlet 17 of the main housing. A plurality of optical fiber ribbons 155 embedded in the cable 150 are regularly distributed and discharged.

The main inlet member is a clamp portion for holding the sheath 152 of the photonic end cable drawn through the center inlet 37 in a spirally coupled state to the outer shell fixing member coupling portion 13 of the main housing 10 ( 34 is provided so that the clamp portion 34 of the shell fixing member is retracted in the centerline direction in a spirally coupled state to the shell fixing member 30 provided with the shell fixing member engaging portion 13 of the main housing 10. It consists of a fastening member 40 to pressurize.

The outer shell fixing member 30 is formed on the outer peripheral surface of the distal end of the threaded portion 33 is formed in a spirally coupled to the outer shell fixing member coupling portion 12 of the main housing 10, from the back of the screw portion 33 The clamp portion 34 protruding in the direction opposite to the slot type optical end cable 150 is provided.

The clamp portion 34 is an inclined surface 35 that forms a tapered angle at a predetermined angle so as to retract in the centerline direction while protruding from the rear surface of the screw portion 33 toward the slot type optical end cable 150 and the inclined surface 35. A flange 36 having an inlet 37 through which the slotted optical end cable 150 is introduced at the center thereof in a state extending from the end to the center line direction and from the inlet 37 toward the inner side of the main housing 10. It consists of a boss 38 in close contact with the outer circumferential surface of the extended slot-shaped optical end cable 150 is inserted.

In addition, the clamp portion 34 is formed with a plurality of incision grooves 39 cut in the longitudinal direction is divided into a plurality of clamp parts, so that the tightening member 40 presses the clamp portion 34 toward the center line direction. In this case, the clamp portion 34 is retracted in the direction of the center line while being constantly deformed about the cutting groove 39.

The fastening member 40 has a threaded portion 43 which is helically coupled to the outer shell fixing member engaging portion 13 of the main housing 10 on the outer peripheral surface of the tip portion, and slot-type photonicity from the tip of the threaded portion 43. The short cable 150 protrudes in a direction opposite to the inlet, and a tightening part 45 forming a taper at a predetermined angle is formed to retract in the center line direction.

On the outer circumferential surface of the rear of the screw portion 43 of the tightening member 40, a bolt-shaped pivot 44 is provided to easily couple the tightening member 40 to the main housing 10, and the pivot 44 The extension part 47 which retracts from the back side toward the center line direction is provided. At the end of the extension part 47, a predetermined inlet 48 through which the slotted optical end cable 150 is introduced into the main housing 10 is formed.

Therefore, when the fastening member 40 is coupled with a constant force so as to be in close contact with the outer skin fixing member 30, the tightening portion 45 of the fastening member 40 centers the clamp portion 34 of the outer skin fixing member Pressurized to retract.

As shown in FIG. 4, the sub-branching device 170 is provided with a sub-branching member 170 coupling a plurality of protective tubes 74 corresponding to the number of single-core optical fibers in the cylindrical sub-housing 60, and the sub-housing 60. At the inlet 65 side of the) is made of a sub-retraction member for fixing the outer shell of the flexible tube (24).

The sub housing 60 has an inlet 65 through which the flexible tube 24 is introduced at one end thereof, and an optical fiber ribbon 155 embedded in the flexible tube 24 inserted at the other end thereof is single-core. The outlet 17 which is regularly branched and discharged into the optical fiber is provided, and a branch member coupling part 62 having a spiral groove is formed at a predetermined position on the inner circumferential surface, and on the inner circumferential surface toward the inlet 65, the inner side from the end is formed. The outer shell fixing member engaging portion 63 having a spiral groove is formed over a certain period.

The sub branch member 170 is in a spirally coupled state to the branch member coupling portion 62 of the sub housing 60, and has a number of branch holes 173 corresponding to the number of single core optical fibers in a direction parallel to a center line on a surface thereof. Is provided.

The protective tube 74 is fitted into the branch hole 173 of the sub-branching member so that the protective tube 74 extends out of a predetermined length through the outlet 65 of the sub housing, respectively, and the flexible tube 24 through the inside thereof. Fiber optic ribbon 155 embedded in the) is uniformly distributed to the single-core optical fiber is discharged.

The sub inlet member is a clamp portion for holding the outer skin of the flexible tube 24 which is introduced through the inlet 87 of the center in a spirally coupled state to the outer shell fixing member coupling portion 62 of the sub housing 60 ( 84 is provided with the outer shell fixing member 80 and the clamp portion 84 of the outer shell fixing member 80 in the state of being spirally coupled to the outer shell fixing member engaging portion 63 of the sub-housing 60 in the center line direction. It consists of a fastening member 90 for pressing to retract.

In addition, the outer shell fixing member 80 is connected to be rotated integrally with the sub branch member 170 by a plurality of connecting bars 175 are coupled to the inside of the sub housing 60 at the same time.

Looking at the branching method of the high-fiber optical end cable according to the present invention according to the above configuration as follows.

Figure 5 is a cross-sectional view showing a branching state in the main branching device constituting the present invention, Figure 6 is a cross-sectional view showing a branching state in the sub-branching device constituting the present invention, Figure 10 is a core according to the present invention This is a floor chart of the branching method of the fiber optic cable.

Referring to this, according to the branching method of the high-fidelity optical fiber cable according to the present invention, the optical branch 55 embedded in the optical fiber cable 50 is divided into a plurality of flexible tubes 24, the main branch is divided into several optical fiber bundles Step (ST-1) to (ST-5) and the sub-branching step (ST-6) to which the single-fiber optical fiber 57 embedded in the flexible tube 24 is inserted into and branched into the protective tube 74, respectively. It is made of (ST-11), and when the number of the single-core optical fiber 57 built in the optical fiber cable 50 is increased, it is possible to branch more than three in the same way.

The main branching step in the branching method of the high-strength optical fiber cable according to the present invention is the fastening member 40 and the outer shell fixing member (40) on the outer peripheral surface of the optical fiber cable 50 before branching the optical cable (50) ( 30) are inserted one after another so as to be positioned inside the predetermined length, and the flexible tube 24 is inserted into the branch hole 23 of the main branch member 20. (ST-1)

In the branching step, the center tensile line 51 of the optical end cable 50 is inserted into the center tension line fixing groove 21 of the main branch member 20, and the flexible portion coupled to the main branch member 20 is inserted. In the tube 24, the plurality of optical fibers 55 embedded in the optical fiber cable 50 are sequentially branched. (ST-2)

Subsequently, the main branch member 20 is positioned at a predetermined position of the center tension line 51, and the center tension line 50 is removed after removing the center tension line 51 protruding forward of the main branch member 20. And the main branch member 20 is fixed with a strong adhesive (ST-3), and then the main branch member 20 is inserted into the main housing 10, and the main housing 10 is rotated so that the main branch member 20 is rotated. ) Is installed in the branch member coupling part 12. (ST-4)

As such, when the main branch member 20 is fixed, the outer shell fixing member 30 is coupled to the outer shell fixing member coupling part 13 of the main housing 10, and the outer shell using the fastening member 40. The clamping portion 34 of the fixing member is tightened with a constant force to fix the sheath 52 of the optical star cable.

At this time, the tightening member 40 is spirally coupled to the outer shell fixing member coupling portion 13 of the main housing 10 is in close contact with the outer shell fixing member 30, the tapered tightening portion 45 of the tightening member 40 Presses the clamp portion 34 of the outer shell fixing member to retract in the direction of the center line to hold the outer shell 52 of the optical star cable. (ST-5)

In the sub-branching step, the fastening member 90 and the outer shell fixing member 80 are sequentially inserted on the outer circumferential surface of the flexible tube 24 before branching the single fiber optic 57 embedded in the flexible tube 24. In order to be positioned inside the predetermined length, the protective tube 74 is inserted into the branch hole 73 of the sub branch member 70 to protrude forward. (ST-6)

Subsequently, the single-fiber optical fiber 57 in the flexible tube 24 is discharged to the outside through the through hole of the fixture 25, and the center wire 28 is fixed to the center wire fixing hole of the fixture 25. After the fastener 25 is inserted into the front end of the flexible tube 24, it is fixed with an epoxy resin, and the center wire 28 is inserted into the center wire fixing groove 71 of the sub branch member 70. (ST-7)

In the branching step, the single-fiber optical fibers 57 discharged through the flexible tube 24 are sequentially branched to correspond one-to-one in the protective tube 74 installed in the sub branch member 70. (ST-8)

Subsequently, the sub branch member 70 is positioned at a predetermined position of the center wire 28, and after removing the center wire 28 protruding forward of the sub branch member 70, the sub branch member 70 and the center thereof are removed. The sub branch member 70 is inserted into the sub housing 60 while the wire wire 28 is fixed with a strong adhesive (ST-9), and the sub branch member 70 is rotated to rotate the sub branch member 70. It is installed in the branch member coupling part 62. (ST-10)

When the sub branch member 70 is installed in the sub housing 60 as described above, the outer shell fixing member 80 is coupled to the outer shell fixing member coupling part 63 of the sub housing 60, and the tightening member 90 is disposed. The outer shell fixing member 80 is tightened with a constant force to fix the outer shell of the flexible tube 24.

At this time, the tightening member 90 is helically coupled to the outer shell fixing member coupling portion 63 of the sub housing 60 is in close contact with the outer shell fixing member 80, the tapered tightening portion 95 of the tightening member 90 Presses the clamp portion 84 of the shell fixing member in the direction of the center line to hold the shell of the flexible tube 24. (ST-11)

FIG. 7 is a cross-sectional view showing a branching state in a main branch device forming a modification of the present invention, and FIG. 8 is a cross-sectional view showing a branching state in a sub branching device forming a modification of the present invention. Is a floor chart for a method for branching high-fiber optical ends cable according to a modification of the present invention.

Referring to this, the branching method of the slotted optical fiber cable for high-core wire according to the modification of the present invention is a plurality of optical fiber ribbons 155 embedded in the slotted optical fiber cable 150 to a plurality of flexible tubes 24 The main branching steps (ST-1) to (ST5) divided into several bundles, and the optical fiber ribbon 155 embedded in the flexible tube 24 are divided into single-fiber optical fibers for protection tubes 74, respectively. It consists of a sub-branch step (ST-6) ~ (ST-10) to be discharged into.

The main branching step (ST-1) to (ST5) in the branching method of the high-conducting optical fiber cable according to a modification of the present invention is the same method as in the branching method of the high-conducting optical fiber cable according to the present invention described above. The plurality of optical fiber ribbons 155 embedded in the slotted optical fiber cable 150 are branched into a plurality of bundles by a plurality of flexible tubes 24, and the detailed description thereof will be described in the main branching step of the present invention. It is the same as in, so it is omitted.

The sub-branching step is a step of branching the optical fiber ribbon 155 embedded in the flexible tube 24 into each single-fiber optical fiber, and first, the fastening member 90 and the outer skin fixing member (90) on the outer circumferential surface of the flexible tube 24. 80 is inserted in sequence so as to be positioned inside the predetermined length, and the preparation tube is inserted into the branch hole 173 of the sub branch member 170 so as to protrude forward. (ST-6)

Subsequently, the fixture 125 is inserted into the front end of the flexible tube 24 so that the optical fiber ribbon 155 in the flexible tube 24 is discharged to the outside through the through hole 127 of the fixture 125. On the outer circumferential surface of the fixture 125, an epoxy resin is applied to fix the fixture 125 in the flexible tube 24. (ST-7)

In the branching step, the optical fiber ribbon 155 discharged through the flexible tube 24 is sequentially branched to correspond one-to-one in the protective tube 74 installed in the sub branch member 170. (ST-8)

Subsequently, the sub-branching member 170 and the outer skin fixing member 80 are inserted into the sub housing 60 in a state of holding the outer shell fixing member 80 integrally connected with the sub branching member 170. When the housing 60 is rotated, the sub branch member 170 and the shell fixing member 80 are installed in the sub housing 60. (ST-9)

When the sub-branching member 60 and the outer shell fixing member 80 are installed as described above, the outer shell of the flexible tube 24 is fixed by tightening the outer shell fixing member 80 with a constant force by using the fastening member 90. Done.

At this time, as the tightening member 90 is helically coupled to the outer shell fixing member coupling portion 63 of the housing and closely adhered to the outer shell fixing member 80, the tapered tightening portion 95 of the tightening member 90 is fixed to the outer shell. Pressing the clamp portion 84 of the member 80 to retract in the direction of the center line to hold the outer shell of the flexible tube 24. (ST-10)

When described in detail with reference to the accompanying drawings for the working example according to the present invention.

9 is a cross-sectional view showing a state of the high-fidelity photoelectric cable branching apparatus according to the present invention installed in the terminal box of the premises.

Referring to this, the flexible end cable 50 is branched into a plurality of flexible tubes 24 by the main branch device in the terminal box 100 in the premises, each of the flexible tube 24 is a terminal box 100 Each of the trays 110 is inserted into each tray 110 to be stacked in the tray 110, and is branched into a single fiber by a sub-branching device installed in the tray 110.

At this time, the length of the flexible tube 24 is made of a length that can be connected from the main branch device to the tray 110 at the furthest distance in the terminal box 100, adjacent to the inlet 101 of the terminal box The flexible tube 24 connected to the tray 110 installed in the portion is processed by the dressing.

In the main branching step as described above, since the optical fiber is branched to the flexible tube 24 in a state where the optical fiber is covered by the sheath, there is no fear that a defect such as an optical fiber core wire is broken. In the sub-branching step, since the single-core optical fiber is inserted into the protective tube 74, it is likely to be broken by brittleness of the optical fiber itself, so that the defective occurrence rate is high.

Therefore, the sub-branching operation is carried out from the tray 110 at a distance from the inlet 101 of the terminal box. If a defect occurs such as breaking the single-fiber optical fiber during the sub-branching operation, the corresponding flash is provided as long as the defect is generated. When the optical fiber of the flexible tube 24 is cut and the length of the flexible tube 24 becomes short, the flexible tube 24 branches to the tray 110 at a close distance from the inlet 101 of the terminal box. do.

FIG. 5 is a cross-sectional view showing a branching state in the main branch device forming the present invention, and FIG. 6 is a cross-sectional view showing a branching state in the sub branching device forming the present invention.

Referring to this, the optical end cable 50 is coupled to the branch hole 23 of the main branch member 20 in a state of being introduced into the main housing 10 through the inlet 37 of the main branch device. It is inserted into the flexible tube 24 is discharged to the outside in the state of diverging into a plurality of bundles.

At this time, the center tensile line 51 of the optical cable (50) is inserted into the central tension line fixing hole 21 of the main branch member 20 is fixed, the outer shell 52 of the optical cable (50) Is held by the clamp portion 34 of the sheath fixing member 30, so that the sheath fixing member may be shrunk in its longitudinal direction due to an external temperature change. Shrinkage by the clamp portion 34 of the 30 is prevented.

Subsequently, the flexible tube 24 is coupled to the branch hole 73 of the sub branch member 70 in a state where the flexible tube 24 is inserted into the sub housing 60 through the inlet 87 of the sub branch device. It is fitted to 74, branched into each single optical fiber, and discharged to the outside.

A fixed fixture 25 having a predetermined shape is installed inside the front end of the flexible tube 24, and a predetermined length is provided between the center wire fixing hole of the fixture 25 and the center wire fixing hole 71 of the sub branch member 70. The center wire 28 is inserted and fixed.

In addition, since the shell of the flexible tube 24 is in a state of being clamped by the clamp portion 84 of the shell fixing member 80, the shell of the flexible tube 24 is changed due to an external temperature change. Even if it is to be contracted in the longitudinal direction, it is prevented from being contracted because it is fixed by the clamp portion 84 of the shell fixing member 80.

FIG. 7 is a cross-sectional view showing a branching state in a main branch device forming a modification of the present invention, and FIG. 8 is a cross-sectional view showing a branching state in a sub branch device forming a modification of the present invention.

Referring to this, the slot-type photonic end cable 150 has a plurality of optical fiber ribbons 155 embedded in the main branch 10 through the inlet 37 of the main branching device into the main housing 10. It is inserted into the flexible tube 24 coupled to the branch hole 23 of the member 20 and is discharged to the outside in a state where it is branched into several bundles.

In this case, the center tension line 151 of the slot-type photoelectric end cable 150 is fitted into the center tension line fixing hole 21 of the main branch member 20 to be fixed, and the outer sheath of the photonic end cable 150 ( Since the 152 is held by the clamp portion 34 of the outer sheath fixing member 30, the outer sheath 152 of the optically short cable 150 may shrink in the longitudinal direction due to external temperature change. It is prevented from being contracted by the clamp portion 34 of the shell fixing member 30.

Subsequently, the flexible tube 24 is inserted into the protective tube 74 installed in the sub branch member 170 in a state where the flexible tube 24 is inserted into the sub housing 60 through the inlet 87 of the sub branch device. Branched into optical fiber and discharged to the outside

In addition, since the shell of the flexible tube 24 is in a state of being clamped by the clamp portion 84 of the shell fixing member 80, the shell of the flexible tube 24 is changed due to an external temperature change. Even if it is to be contracted in the longitudinal direction, it is prevented from being contracted because it is fixed by the clamp portion 84 of the shell fixing member 80.

According to the present invention, the branching device and the branching method using the fiber core cable for the high core is multi-branched single fiber optical fiber embedded in the fiber core cable for high performance even if a defect occurs in some of the single fiber optical fiber during operation, Since only the sub-branching operation is performed again, it is possible to prevent a case where the whole optical end cable cannot be damaged due to the failure of the single fiber.

In addition, the present invention is because the optical fiber embedded in the high-fiber optical fiber cable is divided into a plurality of bundles to the tray, and the sub-branch adjacent to the connection terminal to shorten the length to insert the single-fiber optical fiber into the protective tube, workability This can be improved and the single fiber can be prevented from being easily broken by brittleness.

Claims (8)

An inlet 15 through which the photonic end cable 50 is introduced is formed at one end, and an outlet 17 through which the incoming photonic end cable 50 is regularly branched and discharged is formed at the other end, and a predetermined position on the inner circumferential surface thereof. The main housing 10 is provided with a branch member coupling portion 12 is formed a spiral groove over a predetermined section; In the state in which helix is coupled to the branch member coupling portion 12 of the main housing 10, a boss 22 having a center tension line fixing hole 21 is provided at a center thereof, and the center tension line fixing hole 21 is provided on a surface thereof. A main branch member 20 provided with a plurality of branch holes 23 formed in a direction parallel to the upper and lower sides thereof; It is inserted into the branch hole 23 of the main branch member 20 so as to extend a predetermined length through the outlet 17 of the main housing 10 in the state coupled to the optical fiber cable 50 through the inside thereof. A flexible tube 24 in which a plurality of embedded optical fibers 55 are uniformly distributed and discharged; A main inlet member having an inlet opening 37 through which the photonic end cable 50 is drawn in the center in the state provided at the inlet 15 of the main housing 10; An inlet 65 through which the flexible tube 24 is introduced is provided at one end, and an outlet 67 through which the single-fiber optical fiber 57 branched from the introduced flexible tube 24 is provided at the other end. In the predetermined position of the inner circumferential surface in the sub housing 60, the branch member coupling portion 62 is provided with a spiral groove over a predetermined period; A sub branch member 70 having a plurality of branch holes 73 formed on a surface thereof in a spirally coupled state to the branch member coupling portion 62 of the sub housing 60; The single-fiber optical fiber 57 is discharged through the inside thereof in a state of being fitted into the branch hole 73 of the sub branch member 70 so as to extend out of a predetermined length through the outlet 67 of the sub housing 60. Being protective tube 74; The high-strength optical fiber cable splitting device for a high core wire, characterized in that the center is provided in the inlet (65) of the inlet (65), the center of the inlet member formed with an inlet (87) through which the flexible tube (24) is introduced. The method of claim 1, The main inlet member and the sub inlet member may include outer shell fixing member coupling parts 13 and 63 having spiral grooves formed on the inner circumferential surface of the inlet side of the main housing 10 and the sub housing 60 from the end portion to the inside in a predetermined period. ; Fiber-optic cable 50 drawn through the central inlets 37 and 87 in a spirally coupled state to the shell fixing member coupling portions 13 and 63 of the main housing 10 and the sub housing 60, respectively. An outer shell fixing member 30 or 80 provided with clamp portions 34 and 84 for holding the outer shell of the outer shell 52 or the flexible tube 24; In the state in which each of the main housing 10 and the sub housing 60 are spirally coupled to the outer shell member engaging portions 13 and 63, the clamp portions 34 and 84 of the outer shell fixing member are lifted in the center line direction. Photoelectric cable branching device for high-core wire, characterized in that consisting of a fastening member 40, 90 to press to lift. The method of claim 1, In the state inserted into the front end of the flexible tube 24, the center wire fixing hole 26 is provided in the center, the fastener 25 formed with a through hole 27 in parallel with the center wire fixing hole 26 on the surface )Wow; A center wire 28 protruding a predetermined length toward the front of the flexible tube 24 in a state of being fitted into the center wire fixing hole 26 of the fixture 25; The center wire fixing hole (71) for fixing the center wire 28 in the center of the sub-branch member 70 is formed, characterized in that the high-fiber wire cable ends device. An inlet 15 through which the slot-type photonic end cable 150 is introduced is provided at one end thereof, and an outlet 17 through which the inserted slot-type photonic end cable 150 is regularly branched and discharged is provided at the other end. In the predetermined position of the inner circumferential surface in the main housing 10 is provided with a branch member coupling portion 12 having a spiral groove over a predetermined period; In the state in which helix is coupled to the branch member coupling portion 12 of the main housing 10, a boss 22 having a center tension line fixing hole 21 is provided at a center thereof, and the center tension line fixing hole 21 is provided on a surface thereof. A main branch member 20 provided with a plurality of branch holes 23 formed in a direction parallel to the upper and lower sides thereof; The slot-type photonic end cable 150 is inserted through the inside of the branch hole 23 of the main branch member 20 so as to extend outwardly through the outlet 17 of the main housing 10. A flexible tube 24 through which the optical fiber ribbon 155 of the) is uniformly distributed and discharged; A main inlet member having an inlet opening 37 through which the slotted optical end cable 150 enters in the center in the state provided at the inlet 15 of the main housing 10; An inlet 65 through which the flexible tube 24 is introduced is provided at one end thereof, and an outlet 67 at which the single-fiber optical fiber in the introduced flexible tube 24 is branched and discharged is formed at the other end thereof. A sub housing 60 provided with a branch member coupling part 62 having a spiral groove over a predetermined section at a predetermined position; A sub branch member 170 having a plurality of branch holes 173 formed on a surface thereof in a spirally coupled state to the branch member coupling portion 62 of the sub housing 60; In the flexible tube 24 through the inside in the state of being fitted into the branch hole 173 of the sub-branch member 170 so as to extend a predetermined length outside through the outlet 67 of the sub-housing 60 A protective tube 74 through which the single fiber optic branch is discharged; The sub branch member 170 is formed by a constant connection bar 175 in a state in which an inlet 87 through which the flexible tube 24 is introduced is formed at the center of the inlet 65 of the sub housing 60. The high-fiber optical end cable branching device, characterized in that consisting of a sub-retraction member connected to be rotated integrally with the. The method of claim 4, wherein The main lead member and the sub lead member may include an outer shell fixing member coupling part having a spiral groove formed on the inner circumferential surface of the inlet 15 and 65 side of the main housing 10 and the sub housing 60 from the end portion to the inside in a predetermined section. 12) 62; Slot type optical cable 150 introduced through the central inlets 37 and 87 in a spirally coupled state to the shell fixing member coupling portions 12 and 62 of the main housing 10 and the sub housing 60, respectively. Or outer shell fixing members 30 and 80 provided with clamp portions 34 and 84 for holding the outer shell of the flexible tube 24; The clamping portions 34 and 84 of the shell fixing members 30 and 80 are respectively coupled to the shell fixing member coupling portions 13 and 63 of the main housing 10 and the sub housing 60. Photoelectric cable branching device for high-core wire, characterized in that consisting of a fastening member 40, 90 for pressing to retract in the center line direction. The main branching step in which a plurality of optical fibers 55 embedded in the optical end cable 50 is divided into a plurality of flexible tubes 24 and branched, and the single-fiber optical fibers 57 in the flexible tube 24 are protective tubes ( In the multiple branching method having a sub branching step inserted into a branch), In the main branching step, the fastening member 40 and the outer shell fixing member 30 are sequentially inserted on the outer circumferential surface of the optical end cable 50 so as to be positioned inside a predetermined length, and the branch hole of the main branch member 20 is formed. A preparation step (ST-1) for inserting the flexible tube 24 into 23; The flexible cable 24 is inserted into the center tension line fixing hole 21 of the main branch member 20 by inserting the center tension line 51 of the photonic end cable 50 into the main branch member 20. A branching step (ST-2) of distributing and inserting the optical fiber 55 of the optical fiber cable 50 in a predetermined number); The main branch member 20 is positioned at a predetermined position of the center tension line 51, and after removing the center tension line 51 protruding toward the main branch member 20, the main branch member 20 and the center are removed. A center tensile line fixing step (ST-3) for fixing the tension line 51 with a strong adhesive; The main branch member 20 is inserted into the main housing 10, and the main housing 10 is rotated to install the main branch member 20 in the branch member coupling part 12 in the main housing 10. Branch member coupling step (ST-4); The outer shell fixing member 30 is coupled to the outer shell fixing member coupling portion 13 of the main housing 10, and the outer shell fixing member 30 is tightened with a constant force by using the fastening member 40. Optical cable termination method for high core wires, characterized in that consisting of the optical fiber cable fixing step (ST-5) for fixing the outer skin of the cable (50). The method of claim 6, In the sub-branching step, the fastening member 90 and the outer shell fixing member 80 are sequentially inserted on the outer circumferential surface of the flexible tube 24 so as to be positioned in a predetermined length, and the branch hole of the sub-branching member 70 is formed. A preparation step of fitting the protective tube 74 to the front so as to protrude forward (ST-6) (73); Through the through hole 27 of the fixture 25, the single-fiber optical fiber 57 in the flexible tube 24 is discharged to the outside, the center wire 28 in the center wire fixing hole 26 of the fixture 25 Fixing fixture installation step (ST-7) for fixing the fixing member 25 is inserted into the inside of the front end of the flexible tube (24) after fixing); The center wire 28 is inserted into the center wire fixing hole 71 of the sub branch member 70, and the single core optical fiber 57 is sequentially branched into the protective tube 74 coupled to the sub branch member 70. A branching step (ST-8); The sub branch member 70 is positioned at a predetermined position of the center wire 28, and after removing the center wire 28 protruding forward of the sub branch member 70, the sub branch member 70 and the center wire ( 28) a center wire fixing step (ST-9) to fix the strong adhesive; The sub branch member 70 is inserted into the sub housing 60, and the sub housing 60 is rotated to install the sub branch member 70 in the branch member coupling part 62 in the sub housing 70. Branch member coupling step (ST-10); The outer shell fixing member 80 is coupled to the outer shell fixing member coupling part 62 of the sub housing 60, and the outer shell fixing member 80 is tightened with a constant force by using the fastening member 90 to be flexible. The method for branching high-fiber optical cable for high-core wire, characterized in that consisting of a flexible tube shell fixing step (ST-11) for fixing the shell of the tube (24). The method of claim 6, In the sub-branching step, the protective tube 74 is inserted into the branch hole 173 of the sub-branch member 170 to protrude forward, and the fastening member 90 and the outer skin are fixed on the outer circumferential surface of the flexible tube 24. A preparation step (ST-6) for sequentially inserting the member 80; The optical fiber ribbon 155 in the flexible tube 24 is discharged to the outside through the through hole 127 of the fixture 125 and then inserted into the tip of the flexible tube 24 to fix the optical fiber ribbon 155 to the outside. Fixture installation step (ST-7); A sub branching step (ST-8) of sequentially branching single-fiber optical fibers discharged from the flexible tube 24 into a protective tube 74 coupled to the sub branching member 170; The outer branch fixing member 80 is gripped, and the sub housing 60 is rotated so that the sub branch member 170 and the outer shell fixing member 80 each have a branch member coupling part 62 and an outer shell of the sub housing 60. A sub branch member and an outer shell fixing member coupling step (ST-9) to be coupled to the fixed member coupling portion 63; High core, characterized in that made of a flexible tube shell fixing step (ST-10) for fixing the shell of the flexible tube 24 by tightening the shell fixing member 80 with a constant force by using the tightening member (90). Fiber optic cable branching method.