KR102136340B1 - Multi-tube connector for optical cable - Google Patents

Abstract

The present invention relates to a multi-pipe for an optical cable that is installed to bury an optical cable for communication or electricity in the ground, and the connection of the multi-pipe in the underground is not only convenient, but also has excellent workability, and the exterior and inner tube are kept airtight. This is a technology related to a multi-pipe connector for optical cables that prevents damage to the optical cables by blocking sedimentary water and moisture from seeping into the internal pipe of the optical cable, and smoothly connecting the multiple pipes.
The main configuration of the present invention is a multi-pipe shaped in a spiral shape on the outside of the inner tube so as to surround a plurality of inner tubes; A pair of fastening caps fitted to the outside of the multiple pipes connected to each other, and coupled with a plurality of fastening bolts and nuts; A pair of packings each screwed to the end of the exterior of the multiple pipes connected to each other; And an adapter fitted between the outer tube and the inner tube of the multiple tube while being installed in close contact with the end of the outer tube and the inner tube.

Description

Multi-tube connector for optical cable}

The present invention relates to a multi-pipe (Corrugated Optic Duct: COD) for an optical cable that is installed to bury an optical cable for communication or electricity in the ground, and if described in more detail, the connection work of the multi-pipe in the ground is not only simple, but also works. A multi-pipe connector for optical cables that prevents damage to the optical cable as it blocks sedimentary water and moisture from seeping into the inner pipe where the optical cable is inserted by maintaining the airtightness of the outer pipe and the outer pipe, and the connection of the multiple pipes is performed smoothly. It is about the technology.

In general, communication or electricity lines located in urban areas not only harm the aesthetics of the city, but also instill reluctance to residents.In particular, transmission towers and transmission lines crossing or adjacent to school facilities give students psychological anxiety and a pleasant educational environment. It is hindering the situation.

Therefore, in recent years, by laying an optical cable for communication or electricity in the ground, it not only enhances the aesthetics of the city, but also improves the view of the road and the safety of traffic. In addition, since the sidewalk can be widely used, it is safe and easy to use for residents and pedestrians. It provides a walking space.

Recently, the Corrugated Optic Duct (COD) for optical cables used to bury optical cables for communication or electricity in the ground is a number of (3~7) inner tubes into which the optical cables are inserted, and protects them from earth pressure or external force. It is composed of an exterior, and the exterior is molded in a corrugated tube shape to further increase durability and flexibility.

These multiple pipes for optical cables are molded through an extruder, and then wound on a roll of approximately 500 to 1000m in length and transported to the work site. In order to prevent twisting or twisting of a number of inner pipes inserted into the exterior during construction work, most of the exterior A number of inner pipes are thermally fused to the inner wall to form, and according to the construction length, multiple pipes are connected to each other at the work site to be buried in the ground.

As a prior art for connecting multiple pipes for conventional optical cables to each other, Korean Patent Registration No. 10-1166118 (communication pipe assembly for protecting an optical cable having a joint structure) has been proposed.

The prior art includes a pair of exterior fixing connectors each screwed to the exterior; An inner tube fixture fitted and coupled to the exterior and having a plurality of insertion guides and central guides formed in the front and rear directions; It is configured to include a gasket that is installed between the exterior fixing connector and the inner tube fixture to waterproof the inner tube and the exterior.

This prior art has the effect of unnecessary stripping of the exterior when connecting multiple tubes for an optical cable to each other, but when the exterior fixing connector is bolted with a gasket inserted between the end of the interior tube and the interior tube fixing tool, The hole, the gasket, and the hole in the inner tube fixing tool are twisted, and the soft gasket is pressed and pushed into the inner tube. As a result, the work is cumbersome and difficult as an obstacle occurs in the process of inserting the optical cable into the inner tube.

In addition, as a typical prior art for constructing by connecting multiple pipes for conventional optical cables to each other, Korean Patent Registration No. 10-1491008 (multiple pipe connector for optical cables) has been proposed.

The prior art includes a pair of multiple pipes formed in a spiral shape on the outer surface of the inner pipe so as to surround a plurality of inner pipes into which an optical cable is inserted; A pair of fastening caps screwed to face each other at the ends of the multiple pipes, and fastened with bolts and nuts; And an adapter that is fitted between the outer tube and the inner tube of the multiple tube while being assembled between a pair of fastening caps and installed in close contact with the end of the inner tube.

In this prior art, when multiple pipes are connected to each other in the ground, the connection work of the multiple pipes is not smooth, and the connection part of the multiple pipes is exposed to the outside, so that the airtightness of the inner pipe and the exterior decreases. There is a problem in that sedimentary water and water permeate into the inner tube, and thus the optical cable is damaged.

Korean Patent Registration No. 10-0966786. Korean Patent Registration No. 10-0967922. Korean Patent Registration No. 10-1166118. Korean Patent Registration No. 10-1491008. Korean Patent Registration No. 10-1491010.

The present invention is a technology devised to improve the problems in which the connection of the inner pipe is difficult in the prior art of the conventional multi-pipe connector for an optical cable, and sediment water and water permeate into the inner pipe into which the optical cable is inserted. Consisting of a pair of fastening caps that are fitted and installed and coupled with a plurality of fastening bolts and nuts, a pair of packings screwed to the ends of the multiple tubes connected to each other, and an adapter that is sandwiched between the exterior and the inner tube at the ends of the multiple tubes. Its purpose is to provide a multi-pipe connector for optical cables.

In addition, the present invention not only facilitates the connection of multiple pipes in the ground, but also has excellent workability, and maintains airtightness of the exterior and inner pipes to prevent sedimentary water and moisture from seeping into the inner pipe into which the optical cable is inserted, thereby preventing damage to the optical cable. It is an object of the present invention to provide a multi-pipe connector for an optical cable in which the connection work of multiple pipes is performed smoothly.

The present invention is to realize the desired object as described above,

Multiple pipes shaped in a spiral shape on the outside of the inner pipe to surround a plurality of inner pipes; A pair of fastening caps fitted to the outside of the multiple pipes connected to each other, and coupled with a plurality of fastening bolts and nuts; A pair of packings each screwed to the end of the exterior of the multiple pipes connected to each other; And an adapter installed between the exterior and the inner tube of the multiple tube while being in close contact with the end of the exterior and the inner tube.

In addition, as an embodiment of the present invention, the packing is characterized in that the fastening hole is formed through the central portion, and the fastening hole is formed with a screw thread identical to the appearance on the inner side.

In addition, as an embodiment of the present invention, the adapter is formed with a wheel in a ring shape, and a plurality of holes are formed through adjacent to and through the same as the position and inner diameter of the inner tube at the center of the wheel, and the central and outer protrusions respectively It is characterized in that formed.

In the embodiment of the present invention, the connection of multiple pipes in the ground is not only convenient, but also the workability is excellent, and the appearance and the inner pipe are kept airtight to prevent sedimentation or moisture from seeping into the inner pipe into which the optical cable is inserted, thereby damaging the optical cable. In addition, as the inner pipes connected to each other coincide, there is an effect that the connection work of the multiple pipes is performed smoothly.

In addition, in the embodiment of the present invention, since the packing and the adapter are made of soft synthetic resin rubber or urethane rubber, the adhesion between the packing and the adapter is increased, so that the airtightness of the exterior and the inner tube is secured.

1 is an exploded perspective view showing an embodiment of the present invention.
Figure 2 is a perspective view of the installation state showing an embodiment of the present invention.
Figure 3 is a cross-sectional view of the main part showing the assembly process in the embodiment of the present invention.
Figure 4 is a cross-sectional view of the main part showing the installation process in the embodiment of the present invention.
Figure 5 is a cross-sectional view of the main part showing the installation state in the embodiment of the present invention.
Figure 6 is a perspective view showing the adapter in the embodiment of the present invention.
Figure 7 is a side view showing the adapter in the embodiment of the present invention.
Figure 8 is a side cross-sectional view showing a multi-pipe in the embodiment of the present invention.
Figure 9 is a cross-sectional view showing the main portion of the multi-pipe and the adapter in close contact state in the present invention.

Looking at the main configuration according to an embodiment of the present invention with reference to the accompanying drawings, a multi-pipe 10 formed in a spiral shape 11 on the outside of the inner tube 12 to surround a plurality of inner tubes 12; A pair of fastening caps 20 that are fitted and installed outside the multiple pipes 10 connected to each other, and are coupled with a plurality of fastening bolts 23 and nuts 24; A pair of packings 30 each screwed to the end of the exterior 11 in the multiple pipes 10 connected to each other; And an adapter 40 fitted between the outer tube 11 and the inner tube 11 of the multiple tube 10 and installed in close contact with the ends of the outer tube 11 and the inner tube 11.

In the main configuration of the embodiment, the multiple tube 10 is a conventionally known prior art, and the multiple tube 10 is a plurality of optical cables (3-7) as shown in FIGS. 1 to 4 in the drawing. It consists of an inner tube 12 and an outer tube 11 that surrounds the inner tube 12 and protects it from earth pressure or external force, and the outer tube 11 is formed as a spiral tube outside the inner tube 12.

In the above, the plurality of inner tubes 12 are each molded through a first extruder in the manufacturing process of the multiple tube 10, and then transferred to a second extruder, and the outer tube 11 is formed in a spiral shape outside the inner tube 12. , This multi-pipe 10 is usually manufactured in a length of 500 ~ 1000m.

In addition, in the main configuration of the embodiment, the fastening cap 20 is a function to couple and fix the multiple pipes 10 connected to each other, and the fastening cap 20 is a tapered hole in the center as shown in FIGS. 1 to 4 (21) is formed through, and a plurality of fastening holes 22 are formed through the flange around the outer surface.

In the above, the tapered hole 21 is formed to be larger than the diameter of the outer surface 11 in the multi-pipe 10, and is formed to be tapered to gradually increase in diameter from one side to the opposite side, and a flange having a large diameter around the outer surface is formed. .

The fastening caps 20 of this configuration are provided as a pair, and are preferably made of synthetic resin (plastic) having excellent durability and corrosion resistance, and are respectively fitted and installed to face each other on the outside of the multiple pipes 10 connected to each other. Fastening bolts 23 are inserted into the four fastening holes 22, respectively, and are coupled and installed with nuts 24.

In addition, in the main configuration of the embodiment, the packing 30 secures the airtightness of the exterior 11, and as a function of combining and fixing the multiple pipes 10 connected to each other, the packing 30 is shown in FIGS. As shown in 4, the fastening hole 31 is formed through the central portion, and a tapered surface 32 is formed around the outer surface.

In the above, the fastening hole 31 is formed with the same thread as the outer surface 11 on the inner side, and the tapered side 32 formed around the outer side is tapered to gradually increase in diameter from one side to the opposite side, and the fastening cap It is preferably formed at an angle corresponding to the tapered hole 21 formed in (20).

The packing 30 of this configuration is provided in a pair, and is preferably made of a soft synthetic resin rubber or urethane rubber, and the fastening hole 31 is screwed to the outside of the exterior 11 In the multiple pipes 10 connected to each other, they are respectively coupled and installed so as to face each other at the ends of the exterior 11.

In addition, in the main configuration of the above embodiment, the adapter 40 is in close contact with the outer tube 11 and the inner tube 12 at the ends of the multiple tubes 10 to be connected to each other to secure airtightness while connecting the inner tube 12 to each other. , The adapter 40 has a wheel 41 formed in a ring shape, as shown in FIGS. 1 to 7 in the drawing, and a plurality of holes equal to the position and inner diameter of the inner tube 12 at the center of the wheel 41 42 is adjacent and formed through.

In the above, a central protrusion 43 and an outer protrusion 44 are formed in the central part and the outer part where the plurality of holes 42 are located, respectively, and the central protrusion 43 and the outer protrusion 44 are on both sides of the wheel 41. Each is formed in a symmetrical shape, and its ends are formed to be tapered.

That is, the central protrusion 43 is formed around the hole 42 located in the center of the wheel 41, as in FIGS. 6 and 7 in the drawing, and the outer protrusion 44 is outside the central hole 42 It is formed around the hole 42 located in, and the central protrusion 43 and the outer protrusion 44 are easily fitted between the outer tube 11 and the inner tube 12 at the ends of the multiple tube 10 connected to each other. The ends are tapered.

As a result, when the central protrusion 43 and the outer protrusion 44 of the adapter 40 are inserted between the outer tube 11 and the inner tube 12 at the ends of the multiple pipes 10 connected to each other, as shown in FIG. , Since the central protrusion 43 and the outer protrusion 44 are fitted between the outer tube 11 and the inner tube 12 to be in close contact, suppress the flow of the inner tube 12 in the outer tube 11, and the inner tube connected to each other ( 12)'s position will match.

On the other hand, stepped 45 is formed at the center of both sides of the wheel 41 with a diameter larger than that of the exterior 11, and the height L of the stepped 45 is formed 0.5 to 1.5 mm higher than the side of the wheel 41 This is desirable.

The adapter 40 of this configuration is preferably made of a soft synthetic resin rubber or urethane rubber, and as the stepped 45 is formed in the center of both sides, the appearance in the connection work of the multiple pipes 10 The ends of the inner tube (11) and the inner tube (12) are tightly contacted to ensure airtightness.

Hereinafter, looking at the installation process according to an embodiment of the present invention, first, as shown in FIG. 3 in the drawing, each of the end portions of the multiple pipes 10 for connection to each other to face the fastening cap 20 is inserted, and then the appearance ( 11) After screwing the packing 30 to face each other, the central protrusion 43 and the outer protrusion 44 located on both sides of the adapter 40 between the outer tube 11 and the inner tube 12 Insert each and assemble.

Next, as shown in FIGS. 4 and 5 in the drawing, a plurality of fastening bolts 23 are inserted into the fastening caps 20 fitted to face each other in both multiple pipes 10, and when the nut 24 is tightened, the fastening cap ( As the tapered surface 32 of the packing 30 is inserted into the tapered hole 21 of 20), it is gradually compressed, and the ends of the outer tube 11 and the inner tube 12 are attached to the stepped portions 45 on both sides of the adapter 20. The connection work is completed with firm contact.

As the tapered hole 21 of the fastening cap 20 strongly compresses the tapered surface 32 of the packing 30 by the tightening force of the nut 24, as a result, the fastening hole 31 of the packing 30 is In close contact with the threads of the outer tube 11, the airtightness of the outer tube 11 is ensured, and the ends of the outer tube 11 and the inner tube 12 are firmly adhered to the stepped jaws 45 of the adapter 20 so that the inner tube 12 Confidentiality is secured.

In the embodiment of the present invention, the packing and the adapter are made of soft synthetic resin rubber or urethane rubber, so that the adhesion between the packing and the adapter is increased. It blocks the seepage.

In addition, in the embodiment of the present invention, since the central protrusion and the outer protrusion of the adapter are fitted between the outer tube and the outer tube at the ends of the multiple tubes connected to each other, the flow of the inner tube is suppressed from the inside of the exterior, and the inner tubes connected to each other are consistent. Accordingly, the connection work of multiple pipes is performed smoothly.

It has been described with reference to the preferred embodiments of the present invention above, and is not limited to the above embodiments, and through the above embodiments, those skilled in the art to which the present invention pertains within the scope of the gist of the present invention This can be done with various changes in.

10: multiple tube 11: appearance
12: inner tube 20: fastening cap
21: taper hole 22: fastening hole
23: fastening bolt 30: packing
31: fastening hole 32: tapered surface
40: adapter 41: wheel
42: hole 43: central protrusion
44: lateral projection 45: stepped

Claims (4)

Multiple pipes 10 formed in a spiral shape 11 on the outside of the inner pipe 12 so as to surround the plurality of inner pipes 12; A pair of fastening caps 20 that are fitted and installed outside the multiple pipes 10 to be connected to each other, and are coupled with a plurality of fastening bolts 23 and nuts 24; A pair of packings (30) each screwed to the end of the exterior (11) in the multiple pipes (10) connected to each other; And an adapter 40 interposed between the outer tube 11 and the inner tube 12 of the multiple tube 10 and installed in close contact with the ends of the outer tube 11 and the inner tube 12,
The fastening cap 20 is formed with a tapered hole 21 penetrating through the central portion, and the tapered hole 21 is formed to be larger than the diameter of the outer surface 11 while tapering to gradually increase in diameter from one side to the opposite side. , A flange with a large diameter is formed around the outer surface,
The packing 30 has a fastening hole 31 formed through the central portion, a tapered surface 32 is formed around the outer surface, and the fastening hole 31 has the same thread as the exterior 11 formed on the inner surface. The tapered surface 32 is formed to be tapered to gradually increase in diameter from one side to the opposite side, and is formed at an angle corresponding to the tapered hole 21 formed in the fastening cap 20. .
delete The method of claim 1,
The packing (30) and adapter (40),
A multi-pipe connector for an optical cable, characterized in that it is formed of a soft synthetic resin rubber or urethane rubber material.
The method of claim 1,
Adapter 40,
A wheel 41 is formed in a ring shape, and a plurality of holes 42 are formed through adjacent to and through the center portion of the wheel 41 in the same manner as the position and inner diameter of the inner tube 12, respectively, the central protrusion (43) and a multi-tube connector for an optical cable, characterized in that the outer protrusion (44) is formed.

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