KR20170014312A

KR20170014312A - For a multi-tube cable is bonded portion of the inner tube shown

Info

Publication number: KR20170014312A
Application number: KR1020150107425A
Authority: KR
Inventors: 김병옥; 양지수
Original assignee: 주식회사 디에스아이
Priority date: 2015-07-29
Filing date: 2015-07-29
Publication date: 2017-02-08

Abstract

The present invention relates to a technology for a corrugated optic duct (COD) for a cable used to embed the cable for communications or electricity under the ground. When CODs for a cable are connected and constructed under the ground, a user can check inner ducts to be joined in an easy manner and thus can rapidly perform work processes, and the user, a worker, can check joining portions of the inner ducts in an easy manner, cut the joining portions, and join and install the CODs using a connector. Therefore, the COD has excellent workability and can reduce a work time. The COD for a cable of the present invention includes a plurality of inner ducts in which a cable is inserted and an outer duct formed to cover the inner ducts. The inner ducts are intermittently joined to an inner wall of the outer duct in a lengthwise direction. The COD for a cable also comprises a display unit which displays joining portions of the inner ducts on the outer circumference of the outer duct.

Description

For a multi-tube cable that shows the junction of the inner tube,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a corrugated optical duct (COD) for installing a communication or electric cable in a ground, and more specifically, The display portion is formed on the outer periphery of the outer tube so that the operator can easily recognize the joint portion of the inner tube in the multiple tube for the cable joined to the inner tube. Therefore, when the multiple tubes for cable are connected to each other, It is a technology related to a multi-pipe for a cable which shows a joint part of an inner pipe which can be easily checked and cut, and has excellent workability as a result of connecting multiple pipes by using a connector.

In general, communication or electric lines located in urban areas are not only harmful to the city's aesthetics, but they also instill a sense of disinclination to the residents. Especially, the transmission towers and transmission lines that cross the school facilities and provide them with psychological anxiety and pleasant educational environment It is the situation that inhibits.

Therefore, in recent years, by embedding the communication or electric cable in the ground, it is possible not only to enhance the appearance of the city but also to improve the view of the road and the traffic safety, and to use the coverage widely, It provides walking space.

Recently, a corrugated optical duct (COD) used for burying a communication or electric cable in the ground has been provided with a plurality of (three to six) inner tubes 10 And an outer tube 20 which covers the inner tube 10 and protects it from earth pressure or external force. The outer tube is formed into a bell-shaped tube in order to enhance durability and flexibility.

These cables are formed through an extruder, then rolled up to a length of approximately 500 to 1000 m to be transported to the work site. In order to prevent twisting and twisting of the multiple inner tubes inserted into the outer tube during the construction work, A plurality of inner pipes are intermittently thermally fused to the inner wall, and the pipes are connected to each other at the work site according to the construction length to be buried in the ground.

In case of connecting multiple tubes for conventional cables, the ends of multiple tubes are usually connected to each other by using a connector. In the connecting work of multiple tubes, the operator cuts the joint portion of the inner tube by a cutting machine, And the connection operation is completed.

In the connecting work of multiple pipes, the joint part of the inner pipe is cut and the cut part is connected by the connector. In the case of the multiple pipe, since the inner pipe of the inner pipe is fixed to the inner wall of the outer pipe by heat fusion, This is because the inner tube is not flowing and is easily fitted in the connector and thus the workability is excellent.

Korean Patent No. 10-0773083 (multiplex pipe for cables) has been proposed as a representative prior art of a multi-pipe for a cable which is conventionally installed to bury a communication or electric cable in the ground.

In the above-mentioned prior art, the outer tube is spirally wound in a spiral shape with at least one elongated waveguide type and at least one shallow softer waveguide type in a longitudinal direction, and an inner waveguide type Wherein the outer surface of the inner tubes is welded to the inner surface of the outer tube through the joints so that the outer surface of the inner tubes is welded to the inner surface of the outer tube, And are bonded and fixed at intervals.

The prior art prevents the inner tubes from flowing in the outer direction in the longitudinal direction to prevent the inner tubes from escaping and facilitates handling and construction since the outer appearance is smoothly moved and the outer appearance is easily released from the inner tubes, The connection connection operation of the pipe can be performed quickly and efficiently.

However, according to the prior art, when the multiple pipes are connected to each other at the work site according to the construction length of the cable multi-pipe, the worker can not easily check the joint portion of the inner pipe in the multi- There is a problem that the workability is remarkably lowered and the working time is delayed.

Korean Patent No. 10-0773083. Korean Patent No. 10-0875279. Korean Patent No. 10-1173460. Korean Patent No. 10-1491008.

The present invention has been made in view of the above-mentioned prior art for a conventional cable multi-pipe, in which a worker can not easily recognize a joint portion of an inner pipe when connecting multiple pipes to each other, In which a plurality of inner pipes are intermittently joined to one another in the longitudinal direction of the outer tube so that an operator can easily recognize a joint portion of the inner tube, It is intended to provide multiple tubes.

Further, according to the present invention, when connecting multiple pipes for cables to each other, the operator easily confirms and cuts the joint portion of the inner pipe, and the multi-pipes are connected to each other using the connector, Which is capable of shortening the length of the inner tube.

The present invention has been made to solve the above-

A plurality of inner tubes into which the cables are inserted; An outer tube formed to surround the plurality of inner tubes; Wherein the inner tube is intermittently bonded to the inner wall of the outer tube along the longitudinal direction, wherein the outer tube has a display portion for displaying a joint portion of the inner tube on the outer periphery of the outer tube.

Further, as an embodiment of the present invention, the display section is characterized in that the display section is formed on the outer periphery of the outer tube so that the inner tube is located on the outer side of the joint part where a plurality of inner tubes are intermittently thermally welded.

Further, as an embodiment of the present invention, the display portion is characterized in that the display portion is formed on the outer periphery of the outer tube so as to be located at the center of the width of the joint portion where a plurality of inner tubes are intermittently thermally welded to the inner wall of the outer tube.

Further, as an embodiment of the present invention, the display unit may be formed of any one of a line having various colors, a name of a manufacturer, and a logo of a manufacturer.

In the embodiment of the present invention, the display portion is formed on the outer periphery of the outer tube so that the operator can easily recognize the joint portion of the inner tube in the cable multi-tube in which a plurality of inner tubes are intermittently joined along the longitudinal direction inside the outer tube, The operator can easily check the joint part of the inner pipe and cut it with the cutting machine and the workability is very good because the cut parts of the multiple pipes are connected to each other by using the connector, Can be shortened.

1 is a perspective view showing a conventional multi-tube for a cable;
Fig. 2 is a front sectional view of a main portion of a conventional multi-tube for a cable. Fig.
3 is a side cross-sectional view showing a conventional multi-tube for a cable.
4 is a photograph showing a conventional multi-tube for a cable.
5 is a perspective view showing a multiple tube for a cable in the present invention.
Fig. 6 is a front view of a main part showing a multiple tube for a cable in the present invention. Fig.
7 is a front view of a main part showing an embodiment of the display unit in the present invention.
FIG. 8 is a front view of a main part showing an embodiment of a multi-tube for a cable in the present invention. FIG.
Fig. 9 is a front view of a main part showing another embodiment of a multi-tube for a cable in the present invention. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. An outer tube 20 formed to surround the plurality of inner tubes 10; Wherein the inner tube is intermittently joined to the inner wall of the outer tube in a longitudinal direction and includes a display portion for displaying a joint portion of the inner tube at an outer periphery of the outer tube, ).

In the main structure of the embodiment, multiple tubes are known in the prior art. In the multiple tubes, as shown in Figs. 1 to 4, a plurality of (3 to 6) inner tubes 10 into which cables are inserted extend in the longitudinal direction And an outer tube 20 for protecting the plurality of inner tubes 10 from earth pressure or external force is extruded on the outer surface of the inner tube 10 along the longitudinal direction and the outer tube 20 is formed into a spiral tube It is preferable to be extrusion-molded.

A plurality of inner tubes 10 are intermittently thermally welded to the inner wall of the outer tube 20 along the longitudinal direction to form a bonding portion 30. The plurality of inner tubes 10 are bonded to the outer tube 20 The inner tube 10 is prevented from being twisted or twisted in the construction work.

The plurality of inner tubes 10 are extruded in the longitudinal direction through the first extruder in the manufacturing process and then transferred to the second extruder so that the outer tube 20 is spirally formed on the outer surface of the inner tube 10, And the multiple tubes are usually manufactured to a length of 500 to 1000 m.

As a prior art in which a plurality of inner tubes 10 are intermittently thermally welded to an inner wall of an outer tube 20 in a conventional multi-tube for cable, the applicant of the present invention has proposed Korean Patent No. 10-1457134 Device), No. 10-1457136 (inner heating device for multiple pipes for cables).

In the main structure of the embodiment, the display portion 40 formed at the outer periphery of the outer tube 20 is a function that allows the operator to visually confirm the joint portion of the inner tube 10, As shown in Fig. 7, is formed on the outer periphery of the outer tube 20 such that a plurality of inner tubes 10 are intermittently thermally welded to the inner wall of the outer tube 20 and positioned outside the bonded portion 30.

Conventionally, in the conventional cable multi-tube, the joint portions 30 in which a plurality of inner tubes 10 are intermittently thermally welded to the inner wall of the outer tube 20 are formed at intervals of about 50 to 200 cm according to specifications of the cable multi- And the display portion 40 is also formed at a constant interval B on the outer periphery of the outer tube 20. [

Meanwhile, in the conventional cable multi-tube, the joint portions 30, in which the plurality of inner tubes 10 and the outer tubes 20 are thermally fused, are formed to have a width of approximately 10 to 50 cm in accordance with specifications of the cable multi- 40) is preferably formed to have a width (A) of about 10 to 50 cm at the outer periphery of the outer tube (20).

The display unit 40 has a function of recognizing the position of the jointed portion of the inner tube 10 by the operator. The display unit 40 includes an inner wall of the outer tube 20 and a plurality of inner tubes 10 intermittently heat- The outer periphery of the outer tube 20 is positioned at the center of the width of the outer tube 20.

As shown in FIG. 7, the display unit 40 can display any one of a line having various colors, a name of a manufacturer, or a logo of a manufacturer, and displays the logo of the manufacturer together with the logo You may.

As an example of the display unit 40, when the display unit 40 is formed by mutual manufacturing companies as shown in Figs. 8 and 9 in the drawings, the display unit 40 may be displayed between the joining unit 30 and the joining unit 30, A manufacturer's company name can be displayed at the start point of the joint 30 or at the midpoint of the joint 30 or at the end of the joint 30.

Accordingly, when multiple pipes for cables are connected to each other, the operator can easily recognize the joint portion 30 of the inner pipe 10 by confirming the display portion 40 displayed on the outer periphery of the outer pipe 20, The connection construction work can be easily performed.

According to the embodiment of the present invention constructed as described above, since the display portion 40 for recognizing the position of the joint portion of the inner tube 10 is formed on the outer periphery of the outer tube 20, the operator can easily attach the inner tube 10 It is possible to cut the part and connect the cut part with the connector.

Therefore, in the embodiment of the present invention, when multiple pipes for cables are connected to each other in the ground, an operator easily confirms the joint portion of the inner pipe and cuts the pipe with a cutting machine, and uses the connector to connect the cut portions of the multiple pipes to each other Not only the workability is excellent, but also the working time can be shortened.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It is possible to carry out various changes in the present invention.

10: inner tube 20: outer tube
30: junction 40: display

Claims

A plurality of inner tubes 10 into which the cables are inserted; An outer tube 20 formed to surround the plurality of inner tubes 10; In which the inner tube (10) is intermittently bonded to the inner wall of the outer tube (20) along the longitudinal direction,
And a display portion (40) for displaying a joint portion of the inner tube (10) on the outer periphery of the outer tube (20).

The method according to claim 1,
The display unit (40)
Characterized in that a plurality of inner tubes (10) are arranged on the outer periphery of the outer tube (20) so as to be positioned on the inner wall of the outer tube (20) .

The method according to claim 1,
The display unit (40)
Characterized in that the outer tube has an outer periphery of 50 to 200 cm apart from the outer periphery of the outer tube and has a width A of 10 to 50 cm on the outer periphery of the outer tube. tube.

The method according to claim 1,
The display unit (40)
Characterized in that a plurality of inner tubes (10) are formed on the outer circumference of the outer tube (20) so as to be located at the center of the width of the joint portion (30) intermittently thermally welded to the inner wall of the outer tube (20) Multiple tube.

The method according to claim 1,
The display unit (40)
Characterized in that a plurality of inner tubes (10) are formed between the joint part (30) and the joint part (30) which are intermittently thermally welded to the inner wall of the outer tube (20).

The method according to claim 1,
The display unit (40)
A plurality of lines having various colors, a name of a manufacturer, and a logo of a manufacturer.