KR100972151B1 - Connector for a cable of a terminal box and the method of construction designed by the connector - Google Patents

Abstract

PURPOSE: A lead-in connector for preventing disconnection of a lead-out cable in an optical communication terminal box and an optical cable construction method using the same are provided to improve distribution of external impact and earthquake-resistant efficiency by damping the external impact through a protective tube. CONSTITUTION: A buffer member(110) accepts and holds a lead-out cable(20) so as to protect the lead-out cable from external impact. A plurality of insertion grooves(110a) for insertion and separation of a lead-out cable are formed on the peripheral surface of the buffer member. The number of lead-out cables may be over one or three according to the diameter of the buffer member.

Description

Connector for a cable of a terminal box and the method of construction designed by the connector}

The present invention relates to a lead-out connector for preventing cable disconnection of an optical communication terminal box and a light beam construction 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 cable is embedded in the ground or connected to an optical communication terminal box (hereinafter referred to as a 'terminal box'), the cable (hereinafter referred to as a cable) must be protected against vibration and pressure applied from the outside. The means to do this had to be applied. However, most of the related arts for protecting the outgoing cable embedded in the ground simply wrap the periphery of the outgoing cable to attenuate the impact on the external force, or it is hard to be in the position where the outgoing cable is bent due to intensive pressurization to one point. It was all that the pressure was not applied directly to the lead-out cable by applying a tube of material.

However, such a protection method does not arrange and arrange a plurality of outgoing 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 outgoing cable. Of course, in order to solve this problem, it is possible to solve this problem by constructing a structure that supports a plurality of outgoing cables at a predetermined position and supports them, but the structure that separates and protects outgoing cables has a complicated shape. Since it is difficult to manufacture, and the structure itself may be subjected to an external force, the structure may have a partial impact on the lead cable, and thus the structure has a disadvantage in protecting the lead cable.

As a result, it is possible to stably cover the multiple outgoing cables buried in the ground from the external shock while maintaining the buried position uniformly, and to manufacture equipment for this, it is required to develop a construction method with excellent business feasibility.

Accordingly, the present invention has been invented to solve the above problems, by placing the cable laid out in a uniform and stable position to increase the dispersion efficiency of the external force received by the cable, and to increase the construction efficiency for this optical communication terminal box It is a technical problem to provide a lead-out connector for preventing the disconnection of lead-out cable and the optical fiber construction method using the same.

According to an aspect of the present invention,

Insertion grooves for inserting the lead-out cable detachably are formed on the circumferential surface and both sides of the flexible and elastic material formed in a circular tubular shape, respectively, and the two sides are closed to close the closure of the lead-out cable through the insertion groove The main body has a tubular shape having a pair of side portions formed with a cutting groove for opening and closing the insertion groove and an insertion hole inserted into and communicating with the inlet hole of the side portion, and the inner surface of the insertion hole is tapered with a thread formed therein. And a hose having a threaded packer and an elastic body connecting the packer and the main body to a tapered, tapered, circumferential surface thereof, and a tubular engagement portion inserted into the insertion hole while accommodating the connecting projection. However, the inner and outer surfaces of the engaging portion are each formed with a threaded cap that is coupled to the threads of the connecting projection and the insertion hole, respectively. It is formed, the inside is a buffer for introducing fluid; 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 fixing the cover; and

A frame frame in which an insertion hole is formed to penetrate the drawing cable; An outer frame connected along an end of the frame frame and having both sides coupled to the first and second protective tubes; In a lead-out cable having a cross-sectional shape in which a pair of support cores are arranged in a line with respect to the optical line, a connection tube for optically connecting the optical lines drawn from the first and second protective tubes, and a fastening means for mechanically connecting the support cores And a linker configured to mount the connection tube and the fastening means and be inserted into the insertion hole. A flange formed to protrude along the periphery of the outer frame and connected to the terminal box;

It is an entry connector for preventing the disconnection of the outgoing cable of the optical communication terminal box.

According to the present invention, the mechanical and optical connection of the lead-out cable is precisely carried out through the inlet connector, and the external force is buffered through the protective tube, and the protective tube is divided into the internal and external buffer by the fluid and the buffer by the gas. Since it wraps and protects, there is an effect to significantly increase the dispersion and seismic efficiency for external force as well as cushioning.

In addition, since the manufacture of the lead-in connector that improves the seismic and shock absorbing efficiency is relatively easy and economical, it is also expected to increase the business value.

1 is a perspective view showing a state in which the inlet connector 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 an inlet connector 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 a sequence of assembly of the inlet connector during the connection process of the inlet connector according to the present invention,
9 is an exploded perspective view showing a state of a hose according to the present invention;
10 is a cross-sectional view sequentially showing a state in which a hose is connected to the discharge terminal according to the present invention to introduce the fluid.

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

FIG. 1 is a perspective view illustrating a construction of an inlet connector according to the present invention, and FIG. 2 is a partially exploded perspective view of FIG.

The optical fiber construction method according to the present invention is to allow the outgoing cable 20 buried in the ground to be effectively protected from external force, in the construction method, the protective tube 100 and the two outgoing cables to wrap around and protect the outgoing cable 20 An inlet connector 10 composed of a connecting pipe 200 for mechanically and optically connecting 20 to 20 is applied. At this time, the connection pipe 200 may be further formed with a flange 250 for physically connecting the inlet connector 10 and the terminal box (20). The flange 250 may be fastened to the terminal box 30 through bolting or adhesive means, and the inlet connector 10 is firmly fixed to the terminal box 30.

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 lead cable 20 in the circumferential surface thereof, and a tube shape surrounding the circumference of the buffer hole 110. The cover 120 is composed of.

Here, the insertion groove (110a) of the buffer port 110 is to be formed through the extraction cable 20 is inserted through the longitudinal direction of the buffer port 110, so as to open to the circumferential surface, the insertion groove ( In order to effectively form 110a), as shown, the insertion groove 110a should be radially formed.

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.

The above-described shock absorbing port 110 is to accommodate the draw cable 20 while fixing it and to protect the draw cable 20 from the external force, the circumferential surface of the buffer port 110, a plurality for the removal of the draw cable 20 Insertion grooves 110a are formed. In the embodiment according to the present invention, although two outgoing cables 20 are inserted in a row into the insertion grooves 110a, the outgoing cable 20 accommodated by the insertion grooves 110a according to the diameter of the buffer hole 110 is provided. Of course, the number of may be one or three or more. In addition, the lead 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 protrusion 110c is formed on the outer surface of the insertion groove 110a so that the lead cable 20 inserted into the insertion groove 110a is physically partitioned and separated by the protrusion 110c. did. Thus, the spacing between the projections 110c will correspond to the width of the lead 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 construction method according to the present invention.

4 is a perspective view partially exploded illustrating the appearance of the inlet connector according to the present invention, which will be described with reference to the drawing.

Connector 200 is a configuration for mechanically and optically connecting the optical line 21 of the lead-out cable 20, the absolute mechanical fixing and optical precision is required. Therefore, the connection pipe 200 is made of a solid material to stably support the lead-out cable 20, for this purpose, the protective frame 100 based on the skeleton frame 210 and the skeleton frame 210 to form a basic skeleton Consists of the outer frame 220 for mediating the mechanical connection with the.

Since the arrangement of the outgoing 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 outgoing cable 20 to the skeletal frame 210. Insertion hole 211 is inserted into which is 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.

Flange 250 for fixing the side of the terminal box 30 and the connection pipe 200 may be formed to protrude along the outer frame 220.

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 lead cable 20. The lead 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 outgoing cable 20 according to the present invention having such a structure includes a housing 231 for wrapping and protecting the connection portion of the optical line 21, and optically connecting the optical line 21. Known and common connection tube 232 inherent in the housing 231, and a fastening means 233 which is fixed in 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 lead cable 20 thus formed 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 lead cable 20 has a relatively long one-axis facing surface. In the present invention, as shown in the frame frame 210, the linker 230, which is installed in the line 210 is arranged in a line along the longitudinal direction of the cross-section, the plurality of outgoing cable 20 is fixed through the connection pipe 200 itself To ensure structural support. In addition, since the plurality of outgoing cables 20 are arranged radially, the structural support is further improved.

In addition, the outer frame 220 to support the external force while wrapping wrapped around the end of the skeleton frame 210 is fixed to a plurality of outgoing cables 20 in addition to the skeleton frame 210 in the current position, the external force is the connection pipe Even if it is applied to the 200, the whole of the connection pipe 200 is moved along with the lead cable 20, and thus the connection state between the optical line 21 by the connection tube 232 can ensure its stability.

The construction method according to the present invention will be described sequentially with reference to FIGS. 1 to 4.

1) Buffer port manufacturing step

In order to connect the outgoing cable 20 to the terminal box 30, a buffer port 110 for receiving and protecting the outgoing cable 20 is manufactured. At this time, the buffer port 110 according to the present invention is to be fixed by placing a plurality of outgoing cable 20 radially, for this purpose the insertion groove for inserting the extraction cable 20 in the peripheral surface of the buffer port 110 A plurality of 110a 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. In this case, a fluid such as a liquid or a gel is forcibly injected into the buffer port 110, and an inlet hole 112b (see FIG. 9) is formed therein, and the inlet hole 112b includes a hose 113 and a cap 114. It is processed to be openable and close through). For reference, opening and closing of the inlet hole 112b may be made as needed even after the assembly between the protection pipe 100 and the connection pipe 200 is completed, so that the position of the hose 113 and the cap 114 may be easily manipulated by an operator. It is desirable to be located at a position that can be. Thus, although the hose 113 and cap 114 provided in the protective tube 100 are shown to be located on the side in contact with the connecting tube 200 in FIG. 2, this indicates the presence of the hose 113 and the cap 114. It is for the purpose of explanation that it is clear that there is a difference from the actual structure.

7, 9 and 10 in more detail the structure of the hose 113 and the cap 114 according to the present invention, the hose 113 is in communication with the inlet hole 112b of the side portion 112 While fixing the main body 113a having the insertion hole a and fixed to the inflow hole 112b, the packer 113b which is movably inserted into the insertion hole a, and the main body 113a and the packer 113b, It consists of an elastic body 113c which supports elasticity against the movement of the packer 113b. At this time, the packer 113b is tapered in a circumferential surface, the inner surface of the insertion hole (a) is tapered so as to correspond to the circumferential surface of the packer 113b, as shown in Figure 10 discharge terminal 40, etc. When the packer 113b is introduced into the buffer port 110 by the external force, the fluid discharged from the discharge terminal 40 can be forced into the buffer port 110, and the external force by the discharge terminal 40, etc. disappears. The insertion hole a is closed when the elastic body 113c and the buffer port 110 are drawn out by the internal pressure.

Subsequently, when fluid inflow into the buffer port 110 is completed, the packer 113b is forcibly supported by the cap 114 to increase the sealing efficiency. To this end, the packer 113b protrudes forward to form a connection protrusion b having a thread formed on its circumferential surface, and a thread is formed on the inner surface of the insertion hole a. On the other hand, one surface of the cap 114 facing the packer 113b is formed with a tubular engaging portion 114a which is inserted into the insertion hole a while surrounding (accommodating) the connecting projection b, and the engaging portion is formed. The inner and outer surfaces of the 114a are respectively formed with threads that engage with the threads formed on the circumferential surface of the connecting projection b and the inner surface of the insertion hole a, so that the operator inserts the engaging portion 114a of the cap 114. When inserted into the hole (a) and the connecting projection (b) and turned, the packer 113b is forcibly drawn out of the insertion hole (a) through thread coupling, and the packer 113b completely seals the buffer port 110.

2) Outgoing cable fixing step

At least one lead cable 20 is inserted into the insertion groove 110a of the buffer hole 110 in the longitudinal direction, and the fluid is forced into the hole to increase the internal pressure of the buffer hole 110. The increase in the internal pressure of the buffer port 110 expands the buffer port 110 made of an elastic material, and the buffer port 110 that expands thus wraps the lead cable 20 inserted into the insertion groove 110a while the lead cable 20 is pulled out. ) To prevent re-escape.

Expansion of the buffer port 110 by the fluid ensures the fluidity within a certain range while stably fixing the outgoing cable 20 inserted into the insertion groove (110a), depending on the tension and External force can be adjusted. In addition, since the shock absorbing port 110 buffers the sudden impact applied to the lead-out cable 20, the possibility of damage of the lead-out 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 lead 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 lead cable 20. A more detailed description thereof will be given below.

3) 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 installed in the cover 120 of a stable hard material, when an external force is applied to the lead cable 20, the shock absorbing port 110 and the expansion member 122 double the external force. It can be absorbed. 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.

4) Linker connection step

As shown in Figure 8a (a schematic diagram sequentially showing the assembly sequence of the inlet connector during the connection process of the inlet connector according to the present invention), the fixing of the protective tube 100 is completed, as shown in FIG. The leading end of the lead-out cable 20 and the lead-out cable 20 coming in from the outside 30 are inserted into both sides of the linker 230 and fixed. To this end, the sheath 23 of the lead 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 core 22 is inserted into and fixed to the fastening means 233 of the linker 230, respectively.

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

5) Combined protection tube and connector

When the connection of the outgoing cable 20 is completed through the connector 200, as shown in FIG. 8 (b) (c), the protection tube 100 located at one side of the connector 200 is connected to the connector ( Move to the side 200 to be coupled to one side of the connection pipe 200, the other side is coupled to the terminal box 30 using the flange 250.

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.

6) Pressure resistance adjustment step

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 take-out cable 20 to be sufficiently wrapped and fixed, thereby preventing the protective tube 100 or the connection pipe 200 is moved along the withdrawal cable (20). In addition, since the external impact is efficiently distributed, the impact concentrated at one point of the lead cable 20 is dispersed to minimize damage of the lead cable 20.

For reference, since the adjustment of the internal pressure of the buffer port 110 and the expansion member 122 is performed after the assembly with the lead cable 20 and the assembly between the components are completed, the operator may perform the fluid and gas injection process even after the assembly is completed. The hole, the writing hole 127, and the like should be exposed to the outside so as to proceed.

In addition, the fluid flow into the buffer port 110 is made through the hose 113, and when the injection of the fluid is completed to seal the hose 113 using the cap 114. Since the sealing structure of the hose 113 by the cap 114 has been described above, the description thereof is omitted here.

10; Inlet connector 100; Sheriff
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; Outgoing cable 200; Connector
210; Skeletal frame 211; parenthesis
220; Outer frame 230; Linker
231; A housing 232; Connecting tube
233; Fastening means

Claims (3)

Insertion grooves 110a for removably accommodating the lead-out cable 20 are formed on the circumferential surface, and both sides of the flexible and elastic materials circumferentially 111 forming a circular tubular shape with openings on both sides thereof, respectively. A pair of side portions 112 and a side portion 112 formed with a cutting groove 112a opening the insertion groove 110a to allow the withdrawal of the withdrawal cable 20 through the insertion groove 110a to be closed. The inner surface of the insertion hole (a) is tapered while the inner surface of the insertion hole (a) is tapered to form a threaded insertion hole (a) of the main body 113a and the insertion hole (a) of the main body 113a. The hose 113 and the connecting projection (b) is provided with an elastic body (113c) for connecting the packer (113b) and the packer (113b) and the main body (113a) formed with a threaded taper and the tapered peripheral surface While accommodating the tubular engaging portion (114a) is inserted into the insertion hole (a), the inside of the engaging portion (114a), Each connection surface has projections (b) and insertion holes (a) a screw thread for coupling each of the threads is composed of a formed cap 114, the inside of the buffer opening (110) in which a fluid is flowing in; 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 The protective pipe 100 having a piece (120a, 120b), the cover 120 is fixed to the hinge 123 to be rotated by a medium to surround the buffer port 110;
A frame frame 210 having an insertion hole 211 formed therethrough so that the lead cable 20 passes; 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 lead-out cable 20 having a cross-sectional shape in which a pair of support cores 22 are arranged in a line with respect to the light line 21, the light lines drawn from the first and second protective tubes 100 and 100 ', respectively ( 21, the connection tube 232 for optically connecting, the fastening means 233 for mechanically connecting the support core 22, the connection tube 232 and the fastening means 233 is mounted on the insertion hole 211 A linker 230 composed of a housing 231 inserted therein; Protruding along the periphery of the outer frame 220 is flange 250 which is fastened to the terminal box 30;
Incoming connector for preventing the disconnection of the outgoing cable of the optical communication terminal box. 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. Outgoing connector for preventing the disconnection of the outgoing cable of the optical communication terminal box, characterized in that formed. Insertion grooves 110a for removably accommodating the lead-out cable 20 are formed on the circumferential surface, and both sides of the flexible and elastic materials circumferentially 111 forming a circular tubular shape with openings on both sides thereof, respectively. It is closed, but consists 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 withdrawal cable 20 through the insertion groove (110a), the fluid inside A buffer opening manufacturing step of manufacturing a buffer opening 110 into which is introduced;
A drawing cable fixing step of inserting the drawing cable 20 into the insertion groove 110a and the cutting groove 112a;
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 Cover 120 is a piece 120a, 120b is rotatably fixed via a hinge 123, the cover fixing step of wrapping around the buffer opening 110;
Insert the lead-out cable 20 through the insertion hole 211 of the skeleton frame 210 configured in the connecting pipe 200, and optically connects the optical line 21 of the lead-out cable 20 to the connection tube 232 And, by connecting the support core 22 of the lead-out cable 20 to the fastening means 233, through the linker 230 including the connection tube 232 and the fastening means 233, two disconnected A linker connection step of mechanically and optically connecting the lead-out cable 20;
Insert the linker 230, which is connected to the drawer cable 20, is inserted and fixed in the insertion hole 211, and connects the connector 200 and the protection tube 100, and the connection tube 200 and the protection tube 100 connected in this way Protecting tube and connector coupling step of fixing the terminal box 30 via the flange 250 of the connector 200; And
After the coupling of the protective tube and the connecting tube, the fluid is introduced into the buffer port 110 of the protective tube 100, the gas is introduced into the expansion member 122, the withdrawal cable 20 through the protective tube 100 is tightened It is fixed, but forms a tubular shape having an insertion hole (a) that is inserted into and communicates with the inlet hole (112b) of the side portion 112, the inner surface of the insertion hole (a) is tapered, the threaded body (113a) and the main body A hose 113 provided with an elastic body 113c connecting the packer 113b and the packer 113b and the main body 113a, which are movably inserted into the insertion hole a of the 113a and the tapered circumferential surface thereof, and have a threaded shape. Injecting the fluid through the buffer port 110, and having a tubular engaging portion (114a) is inserted into the insertion hole (a) while receiving the connecting projection (b), the inner and outer surfaces of the engaging portion (114a) The cap 114 has a threaded thread that is coupled to the threads of the connecting projection (b) and the insertion hole (a), respectively. Pressure adjustment step to the sealing hose (113);
Optical fiber construction method using a pull-out connector for preventing the cable disconnection of the optical communication terminal box comprising a.

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