KR100284839B1 - Multi-inner tube integrated optical cable duct (protection tube) - Google Patents

Abstract

In the optical cable duct (protection tube), an optical cable duct unit in which three or five inner tubes and an outer body are integrally formed is used by using an alignment part, a coupler, or a socket. The present invention relates to a multiple inner tube integrated optical cable duct extending in length by connecting in the longitudinal direction.

The present invention, in order to solve the problems of the duplication of inserting the separate inner tube into the exterior after the configuration of the conventional optical cable duct and the problems caused by the pulling machine used for the inner tube pulling operation and the inner tube pulling operation, the inner tube and the appearance is integrated Use a molded fiber duct unit. In addition, the conventional optical cable duct inserts two or three small diameter inner tubes into the exterior to secure a space for pulling the inner tube, but it is difficult to insert the optical cables in the small inner tube, and the remaining space in the exterior after inserting all the inner tubes There were a lot of problems left. In order to solve this problem, in the present invention, it is possible to use an optical cable duct unit having three or five inner tubes having a larger diameter by integrally molding the inner tube and the outer tube so as not to secure a space for pulling the inner tube. In addition, since the optical cable duct unit of the present invention is integrally molded with the inner tube and the outer structure, it is possible to increase the compressive strength, which is the main required physical property of the optical cable duct, and the same material of the inner tube and the exterior is advantageous for reuse.

Description

Multi-inner tube integrated optical cable duct (protection tube)

The present invention relates to a multi-inner tube integrated optical cable duct (protection tube), and more particularly, an optical cable duct unit in which three or five inner tubes and an outer body are integrally molded. The present invention relates to a multi-inner tube integrated optical cable duct which is lengthened by using a coupler or by connecting in a longitudinal direction using a socket.

That is, the optical cable duct according to the present invention is to connect the optical cable duct units in the longitudinal direction.

The prior art of such an optical cable duct is as follows.

Optical cable duct is a pipe protecting communication optical cable installed in the section of 250 ~ 500m between manhole and manhole. Generally, two cables are used to directly protect the optical cable and to secure enough space (path) for the optical cable installation work. It consists of three inner tubes and an outer tube which protects the inner tubes.

In the conventional installation method of the optical cable duct, first, the ground between the manhole and the manhole is dug to a sufficient depth.

Afterwards, the cylindrical exterior units cut into 6m lengths are easily connected to each other in the longitudinal direction to be 250 to 500m long to constitute the exterior. At this time, the exterior units are connected by using a coupler or by applying heat to one end of the exterior units to expand the diameter and inserting the unexpanded ends of the exterior units into the extended ends of the other exterior units.

In this configuration, the ground between the manhole and the manhole is installed in the seat, and then two or three cylindrical flexible inner tubes of 250 to 500 m in length are inserted into the exterior. At this time, insert a tubing bar connected to a pulling wire inside the exterior, and put a pulling wire at one end of the exterior and a tubing bar at the other end, and then install two or three inner tubes in one barrel of the exterior. Insert the inner tube into the exterior by pulling the pull wire on the other side of the exterior. In this case, a pulling eye may be used instead of the barrel.

Such a conventional optical cable duct has a problem that the work is cumbersome because it is configured by the dual operation of inserting separate inner tubes in the outer appearance first, the inner tube is twisted when inserting two or three inner tubes in the outer appearance. There was a problem that requires a large force to pull the inner tube to occur, there was a problem that the inner tube is broken or the pulling wire connected to the inner tube is released due to this large force.

When the pulling machine is used to smooth the inner tube pulling operation, the pulling machine occupies a lot of work space, and thus there is a problem in that it affects the traffic flow when working in the city.

In addition, the optical cable duct configured in this way inserts two or three small diameter inner tubes into the exterior to secure a space for pulling the inner tube, so it is difficult to insert the optical cables in the small inner diameter, and after the inner tubes are all inserted There was a problem that the efficiency is reduced, such as a lot of remaining space left.

Accordingly, the present invention is to provide a multi-inner tube integrated optical cable duct to increase the length by connecting the optical cable duct unit integrally molded with three or five inner tubes and the appearance by using an alignment part and a coupler or a socket in the longitudinal direction. .

The present invention uses the optical cable duct unit having an inner tube formed integrally with the outer appearance, and the use of the double work of inserting separate inner tubes into the outer appearance after the external configuration of the conventional optical cable duct and the pulling used for the inner tube pulling operation and the inner tube pulling operation. The problem caused by the machine was solved. In addition, the present invention is to reduce the efficiency of the conventional optical cable duct that must secure the free space for the inner tube pulling operation by using the optical cable duct unit having three or five inner diameter of larger diameter than the conventional inner tube by integrally molding the inner tube and the outer tube. I solved the problem.

1 is a perspective view of an optical cable duct unit;

2 is a perspective view of an alignment part.

3 is a perspective and sectional view of the coupler;

4 is a view of inserting the alignment component in the optical cable duct unit.

5 is a view showing all three alignment parts inserted into the optical cable duct unit.

Figure 6 is a view of assembling a multi-inner tube integrated optical cable duct by connecting the optical cable duct units with the alignment component inserted into the coupler.

7 is a partial cross-sectional view of a multiple inner tube integrated optical cable duct;

8 is a perspective and sectional view of the socket;

9 is a view of assembling the multi-inner tube integrated optical cable duct by connecting the optical cable duct units to the socket.

10 is a perspective view of another optical cable duct unit;

11 is a view of assembling multiple inner tube integrated optical cable ducts by connecting other optical cable duct units inserted with alignment parts by a coupler.

12 is a perspective view and a sectional view of another socket;

Figure 13 is a view of assembling the multi-inner tube integrated optical cable duct by connecting the other optical cable duct units to the socket.

(Explanation of symbols for the main parts of the drawing)

10: optical cable duct unit 10 ': optical cable duct unit

11: inner tube 12: appearance

13: weight loss part 14: weight loss part

20: alignment parts 21: housewife

22: side 30: coupler

31: tube 32: jaw

40: adhesive (dot) 50: socket

51: tube 52: jaw

53: alignment portion 60: optical cable duct unit

60´: Optical cable duct unit 61: inner tube

62: appearance 63: tube

64: lose weight 65: lose weight

70: socket 71: tube

72: jaw 73: alignment portion

The multi-inner tube integrated optical cable duct according to the present invention can be configured by connecting the optical cable duct unit in the longitudinal direction using the alignment component and the coupler, and can also be configured by connecting the optical cable duct unit in the longitudinal direction using the socket.

In this case, since there are two types of optical cable duct units having three inner tubes and five inner tubes, first, a case of using an optical cable duct unit having three inner tubes is described, and later, an optical cable duct unit having five inner tubes is used. The case will be described.

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

1 to 9, a method of constructing a multi-inner tube integrated optical cable duct by connecting the optical cable duct unit having three inner tubes in the longitudinal direction by using an alignment part and a coupler or a socket will be described.

1 is a perspective view of an optical cable duct unit 10, which is a basic structure of a multi-inner tube integrated optical cable duct, and includes three inner tubes 11 for protecting an optical cable while securing sufficient space (path) for the convenience of an optical cable installation work. The exterior 12 protecting the inner tubes shows an integrally formed optical cable duct unit 10. At this time, the shape of the cross section of the inner tube 11 and the exterior 12 is circular.

The optical cable duct unit 10 has three fat portions 13, which are fan-shaped empty spaces surrounded by the outer diameter of two neighboring inner tubes 11 at the edges and the inner diameter of the outer appearance 12, with three in the center. There is one place for losing weight 14 which is a triangular hollow space surrounded by outer diameters of the inner tubes 11.

The weight portions 13 and 14 secure the roundness so that the cross section of the inner tube is circular to match the center of each inner tube when connecting the optical cable duct units, and also to match the shape of the inner tube to step. It not only prevents the occurrence of the product but also reduces the weight of the product and shortens the solidification time when forming the product.

The diameter of the inner tube 11 of the optical cable duct unit 10 can be inserted into the largest diameter of the optical cable currently used, and about 32 to 38 mm to secure a free space of at least 3 mm, the appearance (12) The diameter of the shell) is preferably about 85 to 95 mm satisfying the compressive strength of 550 kg or more. In addition, the thickness of the inner tube 11 is preferably about 2 to 3 mm in consideration of the handleability and formability of the product, and the thickness of the appearance 12 is preferably about 4 to 5 mm to satisfy the compressive strength of 550 kg or more.

The optical cable duct unit 10 is manufactured by cutting a hard vinyl chloride resin in 6m length units after profile extrusion for easy handling.

FIG. 2 is a perspective view of the alignment part 20 inserted into three fat portions 13 at the edge of the optical cable duct unit 10, with a bow-shaped main portion 21 and two side portions 22 bent inwardly. The alignment part 20 which consists of these is shown. The alignment part 20 does not fall out when inserted into three portions 13 at the edge of the optical cable duct unit 10 due to the shape having a slight elasticity. At this time, the thickness of the main part 21 and the side part 22 of the alignment component 20 is preferably about 2 mm.

The alignment part 20 is manufactured by injection molding a hard vinyl chloride resin.

3 is a perspective view and a cross-sectional view of a coupler 30 that facilitates the connection and disconnection of the optical cable duct units 10, with a cylindrical tube 31 in its basic form and with a jaw 32 in the middle of the tube 31. Shows a coupler 30. In this case, the thickness of the pipe 31 is preferably about 4.5 to 5.5 mm, and the horizontal length of the coupler 30 is shorter than that of the alignment component 20 described above.

The coupler 30 is manufactured by injection molding a hard vinyl chloride resin.

In FIG. 4 to FIG. 7, a method of constructing a multiple inner tube integrated optical cable duct by connecting the optical cable duct unit 10 in the longitudinal direction using the alignment component 20 and the coupler 30 will be described.

4 shows the insertion of the alignment component 20 into the optical cable duct unit 10, and more particularly, the alignment component 20 is inserted into the fat part 13 at the edge of the optical cable duct unit 10. The two sides 22 of the alignment component 20 are connected to the optical cable duct unit so that the main portion 21 of the alignment component 20 abuts the inner diameter 12 of the external portion 12 of the optical cable duct unit 10. 10) Insert the inner tube 11 of the weight portion 13 to abut the outer diameter.

At this time, the alignment component 20 is inserted halfway into only one side of the optical cable duct unit 10, and the alignment component 20 is not inserted into the other side of the optical cable duct unit 10.

FIG. 5 shows that three alignment parts 20 are inserted into three fat portions 13 at the edge of the optical cable duct unit 10.

FIG. 6 shows an assembly of multiple inner tube integrated optical cable ducts by connecting the optical cable duct units 10 and 10 ′ into which the alignment component 20 is inserted by the coupler 30.

First, an adhesive 40 is applied to the surfaces of the optical cable duct units 10 and 10 'and the optical cable duct units 10 and 10' are placed on both sides of the coupler 30, and then the alignment component 20 is connected to the coupler 30. First, the optical cable duct unit 10 protruding toward the inserter is inserted into the coupler 30 until the exterior 12 is caught by the jaw of the coupler 30.

At this time, the alignment component 20 inserted into the optical cable duct unit 10 protrudes out of the coupler 30 because the horizontal length of the alignment component 20 is longer than the coupler 30.

Thereafter, the optical cable duct unit 10 'is inserted into the coupler 30, and the insertion part of the optical cable duct unit 10' is not inserted into the coupler 30.

At this time, the alignment component 20 protruding to the outside of the optical cable duct unit 10 inserted first is inserted into the fat part of the optical cable duct unit 10 ′ to be inserted later, and when the appearance is caught on the jaw of the coupler 30. Insert until.

FIG. 7 is a partial cross-sectional view of a multiple inner tube integrated optical cable duct lengthened by connecting optical cable duct units 10, 10 ′ using an alignment component 20 and coupler 30.

At this time, the jaw 32 of the coupler 30 secures a little space between the optical cable duct units 10 and 10 'to facilitate the assembly of the optical cable duct unit 10 and also to the inside of the assembled multiple inner tube integrated optical cable duct. Easy insertion of optical cables into the

8 and 9, a method of constructing a multi-inner tube integrated optical cable duct by connecting the optical cable duct unit 10 in the longitudinal direction using the socket 50 will be described. At this time, the socket 50 is an integrated part of the alignment component 20 and the coupler 30.

FIG. 8 is a perspective view and a cross-sectional view of the socket 50, showing the socket 50 composed of a cylindrical tube 51, a jaw 52 of a middle portion of the tube 51, and three alignment portions 53. The socket 50 has a shape in which three alignment parts 20 are attached to the jaw 32 inside the coupler 30.

The socket 50 is manufactured by injection molding a hard vinyl chloride resin.

9 shows the assembly of the multi-inner tube integrated optical cable duct by connecting the optical cable duct units 10 and 10 'to the socket 50.

First, the adhesive 40 is applied to the surfaces of the optical cable duct units 10, 10 'and the optical cable duct units 10, 10' are placed on both sides of the socket 50, and the optical cable duct unit 10 is first socketed. Inserts into the 50 so that the outer surface 12 of the optical cable duct unit 10 is inserted between the tube 51 and the alignment portion 53 of the socket 50 and the three alignment portions of the socket 50 ( 53 is inserted into the three fat portions 13 at the edge of the optical cable duct unit 10 until the exterior 12 of the optical cable duct unit 10 touches the jaw 52 of the socket 50. Insert it. Then, the optical cable duct unit 10 'is also inserted into the other side of the socket 50 in the same manner.

10 to 13, a method of constructing a multi-inner tube integrated optical cable duct by connecting the optical cable duct unit having five inner tubes in the longitudinal direction by using an alignment part and a coupler or a socket will be described.

FIG. 10 is a perspective view of the optical cable duct unit 60, which includes five inner tubes 61 for protecting the optical cables and securing sufficient space (path) for the convenience of the optical cable installation work, and an exterior 62 for protecting the inner tubes. The optical cable duct unit 60 integrally molded is shown. At this time, the shape of the cross section of the inner tube 61 and the exterior 62 is circular.

The optical cable duct unit 60 has a tube 63 in the center, and a fat part 64, which is a fan-shaped hollow space surrounded by the outer diameter of two neighboring inner tubes 61 at the edge and the inner diameter of the exterior 62. There are five places, and there are five places of the fat part 65 which are triangular hollow spaces surrounded by the outer diameters of the tube 63 and two neighboring inner tubes 61 around the tube 63.

The tube 63 and the fat parts 64 and 65 secure the roundness so that the cross section of the inner tube is circular to match the center of each inner tube when connecting the optical cable duct units, and the shape of each inner tube is also identical. It is a part that not only prevents the step, but also reduces the weight of the product and shortens the solidification time when forming the product.

The diameter of the inner tube 61 of the optical cable duct unit 60 can be inserted into the largest diameter of the optical cables currently used, and about 32 to 38 mm to secure a free space of at least 3 mm, the appearance 62 The diameter of c) is preferably about 115 to 125 mm, which satisfies the compressive strength of 550 kg or more. In addition, the thickness of the inner tube 61 is preferably about 2 to 3 mm in consideration of the handleability and formability of the product, and about 4 to 5 mm is preferable for the thickness of the appearance 62 to satisfy the compressive strength of 550 kg or more.

The optical cable duct unit 60 is manufactured by cutting the rigid vinyl chloride resin in 6m length units for easy profile extrusion.

The optical cable duct unit 60 in which the five inner tubes 61 and the exterior 62 are integrally formed as described above is also connected in the longitudinal direction using an alignment part and a coupler or a socket to connect the multiple inner tube integrated optical cables according to the present invention. Make up the duct.

FIG. 11 shows the assembly of multiple inner tube integrated optical cable ducts by connecting the optical cable duct units 60 and 60 ′ in the longitudinal direction using the alignment component 20 and the coupler 30.

First, all five alignment parts 20 are inserted about half into five fat portions 64 at the edge of the optical cable duct unit 60. At this time, the alignment component 20 is inserted halfway into only one side of the optical cable duct unit 60, and the alignment component 20 is not inserted into the other side of the optical cable duct unit 60.

In this way, the adhesive 40 is applied to the surfaces of the optical cable duct units 60 and 60 'into which the alignment component 20 is inserted, and the optical cable duct units 60 and 60' are placed on both sides of the coupler 30. After placing in the alignment component 20, the optical cable duct unit 60 protruding toward the coupler 30 is first inserted into the coupler 30 until the exterior 62 is caught by the jaw of the coupler 30.

Then, the optical cable duct unit 60 'is inserted into the coupler 30, and the insertion part of the optical cable duct unit 60' is not inserted into the coupler 30 side.

At this time, the alignment component 20 protruding to the outside of the optical cable duct unit 60 inserted first is inserted into the fat part of the optical cable duct unit 60 ′ to be inserted later, and when the appearance is caught on the jaw of the coupler 30. Insert until.

12 and 13, a method of constructing a multi-inner tube integrated optical cable duct by connecting the optical cable duct unit 60 in the longitudinal direction using the socket 70 will be described. At this time, the socket 70 is integrated with the alignment component 20 and the coupler 30.

FIG. 12 is a perspective view and cross-sectional view of the socket 70, showing a socket 70 consisting of a cylindrical tube 71, a jaw 72 of the middle portion of the tube 71, and five alignment portions 73. The socket 70 has a shape in which five alignment parts 20 are attached to the jaw 32 in the coupler 30.

The socket 70 is manufactured by injection molding a hard vinyl chloride resin.

FIG. 13 shows the assembly of multiple inner tube integrated optical cable ducts by connecting the optical cable duct units 60 and 60 'to the socket 70.

First, the adhesive 40 is applied to the surfaces of the optical cable duct units 60, 60 'and the optical cable duct units 60, 60' are placed on both sides of the socket 70, and the optical cable duct unit 60 is first Inserted into the socket 70 so that the exterior 62 of the optical cable duct unit 60 is inserted between the tube 71 and the alignment portion 73 of the socket 70 and also the five alignment portions of the socket 70. Insert 73 into five places of fat 64 at the edge of the optical cable duct unit 60 until the exterior 62 of the optical cable duct unit 60 touches the jaw 72 of the socket 70. Insert it. Then, the optical cable duct unit 60 'is also inserted into the other side of the socket 70 in the same manner.

The effects of the multiple inner tube integrated optical cable duct according to the present invention are as follows.

First, due to the use of the optical cable duct unit integrally molded with the inner tube and the outer tube, the cumbersome work of the dual operation of inserting a separate inner tube into the outer tube after the construction of the conventional optical cable duct and the pulling machine used for the inner tube pulling and inner tube pulling operations It solved the problem and solved the problem of securing the free space for pulling the inner pipe because the inner pipe with a larger diameter can be used as compared with the conventional one, and the rigidity of the optical cable duct by using the optical cable duct unit integrally molded with the inner pipe and the exterior. It was possible to increase the compressive strength, which is one of the main required physical properties of the optical cable duct, and the same material of the inner tube and the exterior is advantageous to reuse.

Claims (8)

Three places of fattening (13) on one side of the 6-meter long optical cable duct unit (10) consisting of three inner tubes (11), an exterior (12), three places of fattening (13) at the edges, and one of the first parts of fattening (14). The two side parts such that the main part 21 abuts on the inner diameter 12 of the external part 12 of the optical cable duct unit 10 and the fat part 13 of the optical cable duct unit 10. The optical cable duct units 10 into which the alignment part 20 is inserted after inserting the alignment parts 20 in such a manner that the 22 contacts the outer diameter of the inner tube 11 of the optical cable duct unit 10 weight portion 13. Adhesive 40 is applied to the surface of the 10 ', and the optical cable duct units 10, 10' are placed on both sides of the coupler 30 consisting of the tube 31 and the jaw 32, and then the alignment component 20 ) Is inserted into the optical cable duct unit 10 protruding toward the coupler 30 until the exterior 12 is caught by the jaw 32 of the coupler 30, and then the optical cable duct unit When the alignment part 20 protruding out of the 10 is inserted into the fat part of the optical cable duct unit 10 'so that the optical cable duct unit 10' is caught on the jaw 32 of the coupler 30 by its appearance. Multi-inner tube integrated optical cable ducts extending length by inserting up to 6m long optical cable duct unit 10 consisting of three inner tubes 11, an outer shell 12, three fat portions 13 at the edges and one fat portion 14 at the center, and three inner tubes, an exterior and an edge An adhesive is applied to the surface of the 6m long optical cable duct unit (10 ') consisting of three fat parts of the body and one fat part in the middle, and the optical fiber duct units (10, 10') are attached to the tube (51) and the jaw ( 52) and three alignment portions 53 on both sides of the socket 50, and then the optical cable duct unit 10 is placed on the outer tube 12 of the socket 50 and the alignment portion 53. And the three alignment parts 53 of the socket 50 are inserted into the three fat parts 13 so that the exterior 12 reaches the jaw 52 of the socket 50. After inserting, the multiple inner pipes are lengthened by inserting the optical cable duct unit 10 'to the other side of the socket 50 in the same manner. Body type optical cable ducts. The multi-inner tube integrated optical cable duct according to claim 1 or 2, wherein the optical cable duct unit (10) is profile-extruded hard vinyl chloride resin to integrally form the inner tube (11) and the outer tube (12). 4. The multi-inner tube integrated optical cable duct according to claim 3, wherein the cross-sectional shapes of the inner tube (11) and the outer tube (12) of the optical cable duct unit (10) are circular. 6 m long optical cable duct consisting of five inner tubes 61, an outer shell 62, a tube 63 in the middle, five fat portions 64 at the edges and five fat portions 65 around the tube 63 The main part 21 of the optical cable duct unit 60 of the fat part 64 of the optical fiber duct unit 60 has the alignment part 20 which consists of the main part 21 and the two side parts 22 in the five fat parts 64 of one side of the unit 60. The two side portions 22 abut against the inner diameter of the inner tube 61 of the optical cable duct unit 60 weight portion 64 so as to abut against the inner diameter of the outer portion 62, and are inserted about halfway. Applying adhesive 40 to the surface of the optical cable duct units 60, 60 'into which 20 is inserted, the optical cable duct units 60, 60' are connected to a coupler consisting of a tube 31 and a jaw 32. 30 on both sides, and then insert the optical cable duct unit 60 with the alignment component 20 protruding toward the coupler 30 until the exterior 62 catches the jaw 32 of the coupler 30. Then, the alignment component 20 protruding to the outside of the optical cable duct unit 60 is inserted into the fat part of the optical cable duct unit 60 'so that the external appearance of the optical cable duct unit 60' is the jaw of the coupler 30. Multiple inner tube integrated optical cable ducts extending in length by inserting them until they fit into (32). 6 m long optical cable duct consisting of five inner tubes 61, an outer shell 62, a tube 63 in the middle, five fat portions 64 at the edges and five fat portions 65 around the tube 63 Adhesive is applied to the surface of the 6 m long optical cable duct unit 60 'which consists of the unit 60 and the five inner tubes, the outer tube, the middle tube, the five fat parts at the edges and the five fat parts around the tube. The optical cable duct units 60, 60 'are placed on both sides of the socket 70 consisting of the tube 71, the jaw 72 and the five alignment portions 73, and then the optical cable duct unit 60 is placed on the exterior ( 62 is inserted between the tube 71 of the socket 70 and the alignment portion 73, and five alignment portions 73 of the socket 70 to be inserted into the five fat parts 64, Insert the exterior 62 until the exterior 62 touches the jaw 72 of the socket 70, and then attach the optical cable duct unit 60 'to the other side of the socket 70 in the same manner. Admission is integral multiple inner tube fiber optic cable ducts to increase the length of the way. The multi-inner tube integrated optical cable duct according to claim 5 or 6, wherein the optical cable duct unit (60) is profile-extruded hard vinyl chloride resin to integrally form the inner tube (61) and the outer tube (62). 8. The multi-inner tube integrated optical cable duct according to claim 7, wherein the cross-sectional shapes of the inner tube (61) and the outer tube (62) of the optical cable duct unit (60) are circular.