KR100967922B1 - Connecting adapter for a communicating optical cable and the method of construction designed to be earthquake-resistant by the connecting adapter - Google Patents

Abstract

PURPOSE: A connecting adapter for a communicating optic cable and a method of construction designed to be earthquake-resistant by the connecting adapter are provided to increase construction efficiency and a service quality while enhancing the distribution efficiency of an external force on the optic cable. CONSTITUTION: A skeletal frame(210) forms an insertion unit for penetrating an optic cable(20). An outer frame(220) is connected along the end of the skeletal frame. The both sides of the outer frame are coupled with protective tubes(100,100'). A linker(230) is comprised of a connecting tube, combining unit and housing. The connecting tube optically connects the optic lines which are leaded out from the protective tube. The housing loads the connecting tube and a fastening unit and is inserted into the insertion hole.

Description

Connecting adapter for a communicating optical cable and the method of construction designed to be earthquake-resistant by the connecting adapter}

The present invention relates to an adapter for connection of underground telecommunication optical cable and a seismic laying method using the same.

The development of communication technology was based on large capacity data communication technology, and data communication technology was developed as the cornerstone of optimized network environment and physical communication line technology. In order to cope with this development stage, a technology using an optical signal as a communication medium has been proposed, and an optical fiber has been proposed as a line for efficiently transmitting an optical signal.

However, as optical fibers are widely known, they are poor in resistance and durability to external forces, and precise connection between the disconnected parts is required. Therefore, advanced technologies have been required for practical use of optical fibers.

On the other hand, when the optical cable is buried underground, the optical cable should be protected against vibration and pressure applied from the outside, so a means for protecting and buffering the optical cable had to be applied. However, most of the conventional technologies for protecting the optical cable embedded in the ground simply wrap the periphery of the optical cable to attenuate the impact on the external force, or the tube is made of a rigid material at a position where the optical cable is bent due to the intensive pressure generation at one point. It was all that the press was not applied directly to the optical cable.

However, such a protection method does not arrange and arrange a plurality of optical cables according to a predetermined rule, and thus, it is not possible to expect a uniform earthquake and shock absorbing function according to the arrangement position of the optical cables. Of course, in order to solve this problem, it is possible to solve this problem by manufacturing a structure supporting the optical fiber by mounting a plurality of optical cables in a certain position, but the structure that partitions and protects the optical cable must be complicated in its own shape. Therefore, the fabrication is difficult, and when the structure itself is subjected to external force, the structure may be partially impacted on the optical cable, and thus the structure has a disadvantage in protecting the optical cable.

As a result, it is possible to stably wrap and protect a large number of optical cables buried in the ground from external impact, while maintaining the location of the buried uniformly. Was required.

Therefore, the present invention has been invented to solve the above problems, it is possible to increase the distribution efficiency of the external force received by the optical cable by laying the optical cable in a uniform and stable position, for the construction efficiency and service quality for this underground It is a technical problem to provide an adapter for connecting a buried communication optical cable and a seismic laying method using the same.

According to an aspect of the present invention,

Insertion grooves for removably receiving the optical cable are formed on the circumferential surface and the periphery of the flexible and elastic material forming a circular tubular shape with openings on both sides, and closed by covering the both sides, respectively, withdrawal of the optical cable through the insertion groove. It is composed of a pair of side portions forming a cutting groove for opening the insertion groove so as to enable, there is a buffer port in which fluid flows; The first and second pieces composed of a curved case and an expansion member made of a flexible and elastic material into which the gas is introduced are fixed to the inner surface of the case so as to surround the circumference, and are fixed to the hinge to be pivotable. A cover for wrapping and fixing the first and second protective pipes;

A frame frame in which an insertion hole is formed to penetrate the optical cable; An outer frame connected along an end of the frame frame and having both sides coupled to the first and second protective tubes; An optical cable having a cross-sectional shape in which a pair of support cores are arranged in a line around an optical line, comprising: a connecting tube for optically connecting optical lines drawn from the first and second protective tubes, a fastening means for mechanically connecting the support cores; And a linker comprising a housing for mounting the connection tube and the fastening means and inserted into the insertion hole.

It is an adapter for connection of underground communication type optical cable.

According to the present invention, the mechanical and optical connection of the optical cable is precisely carried out through the adapter, and the external force is buffered through the first and second protective tubes, and in the case of the first and second protective tubes, the buffer by the fluid and the buffer by the gas are prevented. By dividing the inside and the outside to protect the optical cable, there is an effect that can significantly increase the dispersion and seismic efficiency to external force as well as buffer.

In addition, since the manufacture of the adapter to improve the seismic and shock absorbing efficiency is relatively easy and economical, it is possible to increase the business value and to improve the service quality by preventing the failure.

1 is a perspective view showing a state in which the adapter according to the present invention is constructed,
2 is a partially exploded perspective view of FIG. 1;
3 is a perspective view partially exploded showing a state of the protective tube according to the present invention,
4 is a perspective view partially exploded illustrating the appearance of the adapter according to the present invention;
5 is a cross-sectional view showing a cross-sectional view of the protective tube according to the present invention,
6 is a cross-sectional view showing the appearance of the circumference of the buffer according to the present invention,
7 is an exploded perspective view showing the assembly of the buffer according to the present invention,
8 is a view schematically showing the assembly sequence of the adapter during the installation process of the adapter according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a state in which the adapter according to the present invention is constructed, Figure 2 is a partial exploded perspective view of Figure 1, it will be described with reference to this.

The laying method according to the present invention is to allow the optical cable 20 embedded in the ground to be effectively protected from external forces, and in the laying method, the first and second protective pipes 100 and 100 'are wrapped to protect the optical cable 20. The adapter 10 consisting of a 'protection tube' and a connecting tube 200 for mechanically and optically connecting two optical cables 20 to each other is applied.

The protective tube 100 has a columnar shape and a buffer port 110 having a plurality of insertion grooves 110a formed therein to accommodate the optical cable 20 on the circumferential surface thereof, and a tube shape surrounding the circumference of the buffer hole 110. It consists of a cover 120.

Here, the insertion groove (110a) of the buffer port 110 is to be penetrated through the optical cable 20 is inserted along the longitudinal direction of the buffer port 110, it will have to form an open shape to the circumferential surface, the insertion groove (110a) In order to effectively form), the insertion groove 110a should be radially formed as shown.

Figure 3 is a perspective view showing a part of the exploded view of the protective tube according to the present invention, will be described with reference to this.

As described above, the shock absorbing port 110 accommodates the optical cable 20 and fixes it, and protects the optical cable 20 from external forces. A plurality of insertion grooves for inserting and removing the optical cable 20 are provided on the circumferential surface of the shock absorbing port 110. 110a is formed. In the embodiment according to the present invention, although the two optical cables 20 are inserted in a row as the insertion grooves 110a, the number of the optical cables 20 accommodated by the insertion grooves 110a according to the diameter of the buffer hole 110. Of course, may be one or three or more. In addition, the optical cable 20 accommodated in the insertion groove 110a may be inserted in a plurality of rows rather than in a row.

As shown in FIG. 5, the projection 110c is formed on the outer surface of the insertion groove 110a so that the optical cable 20 inserted into the insertion groove 110a is physically partitioned and separated by the projection 110c. . Thus, the spacing between the projections 110c will correspond to the width of the optical cable 20.

On the other hand, a plurality of engaging grooves (110b) are formed on the circumferential surface of the buffer port (110). The locking groove 110b is molded to increase the binding efficiency and the shock transmission efficiency of the cover 120 surrounding the buffer hole 110, which will be described in detail with reference to the cover 120.

Cover 120 is to protect the periphery of the buffer port 110, the proximal ends of the first, second piece (120a, 120b) of the curved shape is rotatably fixed via the hinge 123, the first, second The ends of the pieces 120a and 120b are configured to be bonded to each other, so that when the ends are joined to each other, the cover 120 forms a complete tubular shape, and the tubular cover 120 thus formed is formed of the buffer hole 110. Closely wrapped around the perimeter.

Subsequently, the first and second pieces 120a and 120b of the cover 120 are formed on the case 121 forming a frame and the inner surface of the case 121 so as to maintain the above-mentioned shape, and expand through gas injection. It includes an expansion member 122. On the other hand, protruding jaws 124 protruding in a ring shape are formed at each tip of the first and second pieces 120a and 120b, and when the protruding jaws 124 are bonded to each other, a pair of protruding jaws ( By forcibly fitting the clamps 125 surrounding the 124 at a time, the protrusions 124 are mutually bound by the clamps 125, and thereby the first and second pieces 120a and 120b are firmly fixed. .

The protrusion 122a of the expansion member 122 is engaged with the locking groove 110b while expanding when gas is introduced into the expansion member 122, and may be formed in a shape corresponding to the shape of the locking groove 110b. .

Detailed descriptions of the formation of the buffer holes 110 and the cover 120 and their mutual coupling will be described below in detail with reference to the installation method according to the present invention.

4 is a perspective view partially exploded illustrating the appearance of the adapter according to the present invention.

Connector 200 is a configuration for mechanically and optically connecting the optical line 21 of the optical cable 20, the absolute mechanical fixability and optical precision is required. Therefore, the connection pipe 200 is composed of a rigid material for stably supporting the optical cable 20, for this purpose, the skeleton frame 210 and the protective tube 100 and the skeleton frame 210 to form a basic skeleton for this purpose Consists of an outer frame 220 to mediate the mechanical connection of the.

Since the arrangement of the optical cable 20 in the embodiment according to the present invention is radial, in consideration of this, the skeletal frame 210 is also radially formed, and the linker 230 for connecting the optical cable 20 to the skeletal frame 210 is provided. An insertion hole 211 is inserted and fixed. For reference, the skeleton frame 210 according to the present invention is formed in a cross shape, the insertion hole 211 was formed in a line along the skeleton frame 210.

Subsequently, the outer frame 220 connecting the ends of the skeleton frame 210 is formed to correspond to the shape of the protective tube 100, and the protective tube 100 and the connection tube 200 are arranged in a line as shown in FIG. 1. When assembled, it forms a stable cylindrical shape.

Mechanical connection of the protective tube 100 and the connecting tube 200 can be made through a variety of means, in the embodiment according to the present invention, the first fastener respectively on the surface of the protective tube 100 and the connecting tube 200 in contact with each other 126 and the second fastener 240 are formed, so that the protective tube 100 and the connection pipe 200 can be accurately connected to the position through the engagement between the first and second fasteners 126 and 240. For reference, when the protective tube 100 and the connecting tube 200 are in contact with each other in the first position by the first and second fasteners 126 and 240, the mutual binding can be made through the application of the fastening means of the common and generous. . For example, the connection between the protective tube 100 and the connecting pipe 200 may be welded and connected, or by using a nut (not shown) to form threads on the circumferential surfaces of the protective pipe 100 and the connecting pipe 200 to surround them. It may also be fastened, the protective tube 100 and the connecting pipe 200 may be fastened with a pin or bolt penetrating the flange after forming a flange (not shown) around the end in contact with each other.

The linker 230 is a means for mechanically and optically connecting the optical cable 20. The optical cable 20 according to the present invention is reinforced with a pair of support cores 22 in addition to the conventional optical line 21. The support cores 22 are arranged side by side facing each other with respect to the light line 21, and the diameter thereof is larger than that of the support cores 22. Thus, the light lines 21 and the support cores 22 thus disposed are It is surrounded by a sheath 23 and protected. As a result, the optical line 21 is protected from the external force by the support core 22 made of durable material, and protects the optical line 21 against the force when a force greater than a predetermined curvature is applied. .

The linker 230 for connecting the optical cable 20 according to the present invention having such a structure includes a housing 231 which surrounds and protects a connection portion of the optical line 21, and optically connects the optical line 21 to the housing. 231, a publicly-known connection tube 232, and a fastening means 233 internally fixed to the housing 231 to mechanically fix the support core 22. Here, the fastening means 233 is fixed to the grip while receiving the support core 22, it can be fixed to the support core 22 by a variety of fastening means during construction.

The connection tube 232 is a known and common connection means for optically connecting two optical fibers, and in the art, a connection tube 232 for connecting optical fibers to each other is a well known technology. Therefore, description thereof is omitted.

The optical cable 20 formed as described above is arranged in a line as shown by the optical line 21 and the pair of support cores 22, so that the cross section of the optical cable 20 has a relatively long one-axis facing surface. In the present invention, as shown in the linker 230 in the frame frame 210 is arranged in a line along the longitudinal direction of the cross-section, a plurality of optical cables 20 through and fixed to the connection pipe 200 itself Ensure structural support. In addition, since the plurality of optical cables 20 are disposed radially, the structural support is further improved.

In addition, the outer frame 220 supporting the external force by wrapping the end of the skeleton frame 210 to support the external force is absolutely fixed to the current position in addition to the skeleton frame 210, the external force is connected to the tube ( Even if it is applied to the 200, the whole of the connection pipe 200 moves together with the optical cable 20, and thus the connection state between the optical line 21 by the connection tube 232 can ensure its stability.

With reference to Figures 1 to 4 will be described sequentially the installation method according to the present invention.

1) Excavation Stage

The excavation point at which the optical cable 20 is to be embedded is excavated.

2) Buffer port manufacturing stage

In order to install the optical cable 20 at the excavated point, the buffer port 110 for receiving and protecting the optical cable 20 is manufactured. At this time, the buffer port 110 according to the present invention is to be arranged to fix a plurality of optical cables 20 radially, for this purpose the insertion groove (110a) for insertion and removal of the optical cable 20 on the peripheral surface of the buffer port 110 ) A large number is formed.

In order to easily manufacture such a buffer 110, the buffer 110 according to the present invention is shown in Figure 5 (cross-sectional view showing a cross-sectional view of the protective tube according to the present invention), Figure 6 (circumference of the buffer according to the present invention) As shown in the sectional view showing a part state and FIG. 7 (exploded perspective view showing the assembly of the buffer according to the present invention), it is composed of a circumferential portion 111 and a side portion 112.

The circumferential part 111 may be manufactured by an easy molding method such as the insertion groove 110a, the locking groove 11b, and the protrusion 110c such as press molding or die molding. At this time, since the material of the circumferential portion 111 is a synthetic resin material of flexibility and elasticity, the circumferential portion 111 is first manufactured in a belt shape, and then both ends thereof are connected to each other to be molded into a circular tube shape as shown in FIG. 7. Of course, the both ends are fastened through a mechanical fastening means such as a chemical fastening means such as an adhesive, a clip or bolting, it can maintain a circular tube shape.

Subsequently, both side surfaces of the circumferential portion 111 are opened, and a side portion 112 for closing them is manufactured. The side portion 112 may be cut and formed according to a design, and in consideration of the insertion groove 110a of the circumferential portion 111, a radial cut groove 112a is formed at a corresponding position.

The completed circumferential portion 111 and the pair of side portions 112 are joined to each other as shown in FIG. 7, so as to completely close the inside of the buffer opening 110. At this time, a fluid such as a liquid or gel is forcibly injected into the buffer port 110. A hole (not shown) for this purpose is temporarily formed, and the hole is closed when the internal pressure of the buffer port 110 is sufficient.

3) Optical cable fixing step

At least one optical cable 20 is inserted into the insertion groove 110a of the buffer port 110 in the longitudinal direction, and the fluid is forced into the hole to increase the internal pressure of the buffer port 110. The increase in the internal pressure of the buffer port 110 expands the buffer port 110 made of an elastic material, and thus the buffer port 110 that expands surrounds the optical cable 20 inserted into the insertion groove 110a and the optical cable 20. Prevent re-escape.

Expansion of the buffer port 110 by the fluid ensures fluidity within a certain range while stably fixing the optical cable 20 inserted into the insertion groove (110a), depending on the situation, such as tension and external force received by the optical cable 20 Can be adjusted. In addition, since the shock absorbing port 110 buffers the sudden impact applied to the optical cable 20, the possibility of damage of the optical cable 20 can be significantly lowered.

On the other hand, in order to adjust the position of the protective tube 100, initially the protective tube 100 should be movable along the optical cable 20. Therefore, the internal pressure of the buffer port 110 is slightly lowered so that the protective tube 100 can first move along the optical cable 20. A more detailed description thereof will be given below.

4) Cover fixing step

The circumference of the buffer port 110 is fixed with the cover 120. As described above, the cover 120 is the first and second pieces (120a, 120b) consisting of the case 121 and the expansion member 122 is rotatably fixed via the hinge 123, the first, second The front ends of the pieces 120a and 120b are fixed by the clamp 125. As shown in FIG. 5 (a), the expansion member 122 immediately after wrapping the buffer 110 does not have gas injection. , The expansion member 122 is not closely engaged. However, when gas is injected into the expansion member 122 at a high pressure and expanded, as shown in FIG. 5B, the expansion member 122 expands with the gas at high pressure while the locking groove 110b of the buffer port 110 is expanded. ), And thus the buffer opening 110 and the cover 120 form a tight and fluid bond between each other. That is, since the shock absorbing port 110 is fluidly embedded in the cover 120 made of a stable hard material, when an external force is applied to the optical cable 20, the shock absorbing port 110 and the expansion member 122 absorb the external force twice. You can do it. In addition, by applying a fluid to the buffer port 110, by applying a gas having a relatively large volume change rate relative to the fluid to the expansion member 122 of the circumference of the buffer port 110, the outer surface of the expansion member 122 is buffered Since the circumferential surface of the sphere 110 may be closely engaged with each other, as well as the buffer opening 110 may move to a predetermined range within the case 121, the buffering efficiency may be significantly improved.

The description number “127” is a hole through which the gas (air) can be forcibly injected into the expansion member 122 from the outside.

5) Linker connection step

When the fixing of the protective tube 100 is completed as shown in Figure 8a (a schematic diagram sequentially showing the assembly sequence of the adapter during the installation process of the adapter according to the present invention), the optical cable 20 as shown in FIG. The tip is inserted into both sides of the linker 230 and fixed. To this end, the sheath 23 of the optical cable 20 is removed to expose the optical line 21 and the pair of support cores 22, and the optical line 21 is connected to the connection tube 232 of the linker 230. The support cores 22 are inserted into and fixed to the fastening means 233 of the linker 230, respectively.

When connecting the optical cable 20 to the linker 230, since the linker 230 is separated from the skeleton frame 210, as shown in Figure 8 (b), the optical cable 20 is the skeleton frame 210 After passing through the first end is fixed to one side of the linker 230, the optical cable 20 is fixed to both sides of the linker 230, the linker 230 is inserted into the corresponding insertion hole 211 It is fixed.

6) Combined protection tube and connector

When the connection of the optical cable 20 through the connector 200 is completed, as shown in Figure 8 (b) (c) is connected to each of the protective tube 100 located on both sides of the connector (200). Move toward the pipe 200 and couple with the side of the connection pipe 200, respectively.

Since the mechanical coupling means of the protective tube 100 and the connecting tube 200 has been exemplified above, the description thereof is omitted here.

7) Pressure resistance adjustment stage

When the coupling of the protective tube 100 and the connecting tube 200 is completed, the fluid and gas are forcibly added to the buffer 110 and the expansion member 122, respectively, the buffer 110 and the expansion member 122 The internal pressure of the to ensure that the optical cable 20 is sufficiently wrapped and fixed, thereby preventing the protective tube 100 or the connection tube 200 to move along the optical cable 20. In addition, since the external shock is efficiently distributed, the impact concentrated at one point of the optical cable 20 is dispersed to minimize the occurrence of damage of the optical cable 20.

For reference, the adjustment of the internal pressure of the buffer port 110 and the expansion member 122 is performed after the assembly with the optical cable 20 and the assembly between the components are completed, so that the operator may proceed with the fluid and gas injection process even after the assembly is completed. The holes and the writing holes 127, etc. will be exposed to the outside so as to be able to.

8) Landfill Stage

When the adapter 10 described above is completed, the soil is poured to bury the corresponding point.

10; Adapter 100, 100 '; First and second sheriffs
110; Buffer 110a; Insertion groove
110b; Engaging groove 111; Circumference
112; Side portion 120; cover
120a, 120b; 1,2,121; case
122; Expansion member 123; Hinge
20; Optical cable 200; Connector
210; Skeletal frame 211; parenthesis
220; Outer frame 230; Linker
231; A housing 232; Connecting tube
233; Fastening means

Claims (4)

Insertion groove (110a) for removably receiving the optical cable 20 is formed in the circumferential surface and the peripheral portion 111 of the flexible and elastic material to form a circular tubular shape, both sides of the opening, respectively, and the both sides of the closed However, it is composed of a pair of side portions 112 that form a cutting groove 112a for opening the insertion groove (110a) to allow the withdrawal of the optical cable 20 through the insertion groove (110a), the fluid flows inside The buffer port 110 to be; The first and the second configuration consisting of a flexible case 121 and a flexible and elastic material 122 is disposed and fixed to the inner surface of the case 121 to surround the circumferential portion 111 and the gas flows therein First and second protective pipes 100 and 100 'having pieces 120a and 120b rotatably fixed to each other via a hinge 123 to cover and fix the buffer port 110.
A frame frame 210 having an insertion hole 211 formed therethrough so as to penetrate the optical cable 20; An outer frame 220 connected along the end of the frame frame 210 and having both sides coupled to the first and second protective pipes 100 and 100 '; In the optical cable 20 having a cross-sectional shape in which a pair of support cores 22 are arranged in a line with respect to the optical line 21, the optical line 21 drawn out from the first and second protective tubes 100 and 100 ', respectively. ) And a connecting tube 232 for optically connecting, a fastening means 233 for mechanically connecting the support core 22, a connecting tube 232 and a fastening means 233, and inserted into the insertion hole 211. Linker 200 having a; linker 230 consisting of a housing 231 is provided
Adapter for connection of buried telecommunication optical cable, characterized in that consisting of. The method of claim 1,
The insertion groove (110a) opening along the cutting groove (112a) is formed radially around the side portion 112, the skeleton frame 210 is also formed radially along the cutting groove (112a);
A locking groove 110b is formed on an outer surface of the circumference 111, and a protrusion 122a protruding to engage with the locking groove 110b when gas is inserted is formed on one surface of the expansion member 122 contacting the circumference 111. Adapter for connection of underground communication type optical fiber, characterized in that formed. An excavation step of excavating a point where the optical cable 20 is embedded;
Insertion groove (110a) for removably receiving the optical cable 20 is formed in the circumferential surface and the peripheral portion 111 of the flexible and elastic material to form a circular tubular shape, both sides of the opening, respectively, and the both sides of the closed However, it is composed of a pair of side portions 112 that form a cutting groove 112a for opening the insertion groove (110a) to allow the withdrawal of the optical cable 20 through the insertion groove (110a), the fluid flows inside A buffer manufacturing step of manufacturing a buffer opening 110 to be used;
An optical cable fixing step of inserting the optical cable 20 into the insertion groove 110a and the cutting groove 112a, and injecting fluid into the buffer port 110 to tighten and fix the optical cable 20;
The first and the second configuration consisting of a flexible case 121 and a flexible and elastic material 122 is disposed and fixed to the inner surface of the case 121 to surround the circumferential portion 111 and the gas flows therein A cover fixing step in which the pieces 120a and 120b are rotatably fixed via the hinge 123, wrapped around the buffer opening 110, and injecting gas into the expansion member 122;
Insert the optical cable 20 to penetrate the insertion hole 211 of the frame frame 210 formed in the connecting pipe 200, and optically connects the optical line 21 of the optical cable 20 to the connecting tube 232, By connecting the support core 22 of the optical cable 20 to the fastening means 233, via the linker 230 including the connecting tube 232 and the fastening means 233, two optical cables 20 disconnected Linker connection step of mechanically and optically connecting); And
Inserting and fixing the linker 230 to which the optical cable 20 is connected to the insertion hole 211 and fixing the connection tube 200 and the protection tube 100 to connect the protection tube and the connector;
Earthquake-resistant installation method using an adapter for connection of underground buried communication optical cable comprising a. The method of claim 3, wherein
After the step of coupling the protective tube and the connecting tube, reinforce the fluid into the buffer port 110 of the protective tube 100, by reinforcing the gas into the expansion member 122, the optical cable 20 penetrating the protective tube 100 is Pressure-resistant adjusting step for tightening and fixing;
Earthquake-resistant installation method using an adapter for connection of underground embedded communication optical cable, characterized in that it further comprises a.

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