KR100470872B1 - Pan case for both ends access of optical fiber - Google Patents

Abstract

The present invention discloses a fiber bundle bundle for bidirectional drawing, which can draw a fiber bundle in both directions.

The present invention is a pair of storage boxes consisting of a cylindrical center pillar for winding an optical fiber bundle, a case formed at the bottom of the central column so as to secure a storage space of the optical fiber bundle, and an opening of which one end of the side portion of the case is open. It is to be detachably coupled to each other via a detachable means to face each other to be able to pull out the optical fiber bundle in both directions.

Description

Fiber Bundle Storage Box for Bidirectional Draw {PAN CASE FOR BOTH ENDS ACCESS OF OPTICAL FIBER}

The present invention relates to an optical fiber bundle storage box, and more particularly, to a bidirectional pull-out optical fiber bundle storage that can be used by unwinding both ends of the optical fiber bundle at the same time.

The optical communication method is different from the conventional wired communication using metal wires or the wireless communication using free space.

Optical fibers are thin, flexible strips that guide light in the visible or near-infrared region. Such optical fibers have a core in the center and a cladding around them. The index of refraction of the core is slightly greater than the index of refraction of the cladding so that light can cause total reflection within the core. The core and cladding are made of glass or plastic.

As a method for laying an optical fiber cable, air blown fiber (ABF) technology is usefully used.

Pneumatically laid optical fiber (hereinafter referred to as ABF) technology pre-installs a tube cable with a diameter of 5 to 8 mm, and then blows a bundle of optical fibers with air pressure by blowing a bundle of 2 to 12 cores into the tube. It is a technique to infuse Usually, it is possible to lay around 1km without connection in one operation. In the case of laying a path longer than the normal length, it is possible to install in both directions from the center of the section, or to rewind the fiber bundle coming out in the opposite direction by blowing in one direction, and then continue to install the section afterwards. In this way, even long sections over 1 km can be laid without connection points.

ABF technology pre-installs the tube cable where the optical communication demand is expected, and then blows the fiber along the tube path, enabling the supply of optical fiber with minimal connection points, which improves network reliability and economics. In other words, since only the tube cable is laid in advance and the fiber is supplied later when demand arises, it is possible to meet the demand of the optical communication with low construction cost unlike the general fiber cable installation technology that predicts the demand for several years and lays the fiber in advance. .

Meanwhile, the bidirectional laying operation by the conventional general ABF technology will be described below.

First, install the tube cable in both directions near the center of the section to be installed, and then supply the fiber bundle in one direction by using the installation equipment. When the installation in one direction is completed, the installation equipment is moved in the opposite direction and combined with the tube cable installed in the opposite direction to blow the optical fiber bundle.

When the fiber laying in both directions is completed, the bundle is exposed to the length of the fiber bundle, which is occupied by the equipment, and is sealed using a separate closedown component to protect this portion. The protective coupling tube is pre-inserted onto the tube prior to the installation of the optical fiber bundle, and a threaded fixing device is attached to both sides to seal the tube.

On the other hand, the optical fiber bundle is supplied while being wound in a spool type storage structure and then released from the outermost wound side. The spool is easy to wind the fiber or bundle of fibers and allows for relatively high density storage.

However, such a spool-type storage structure can release the optical fiber bundle from the last wound outside, but in the case of unwinding from the inside, the longer the length, the more the twist becomes worse and the wound state is disturbed.

In particular, when it is necessary to install the optical fiber in both directions, there was an inconvenience that each must have a separate spool.

Accordingly, an object of the present invention is to provide a bidirectional drawout optical fiber bundle storage box that can simultaneously release both ends of an optical fiber or an optical fiber bundle.

In order to achieve the above object, the present invention provides a bidirectional drawout optical fiber bundle for storing the optical fiber bundle in both directions, and has a cylindrical center column for winding the optical fiber bundle and a center for securing the storage space of the optical fiber bundle. A pair of storage bins consisting of a case formed at a lower end of the pillar and an open portion at one end of the side portion of the case are separated from each other and connected to each other via a detachable means so that the open portions face each other.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

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

1 is a plan view showing a bidirectional drawer optical fiber bundle storage box according to the present invention, Figure 2 is a perspective view showing a half body stored in accordance with the present invention.

As shown, the bi-directional drawer optical fiber bundle storage box according to the preferred embodiment of the present invention is made so that the pair of storage boxes (11, 12) can be separated, combined.

Each box body 11 and 12 is a case 15 formed at a lower end of the center column 14 to secure a cylindrical center column 14 for winding the optical fiber bundle and a storage space 16 of the optical fiber bundle. ) And one end portion of the side of the case 15 is opened.

In particular, the pair of storage compartments 11 and 12 are coupled so that the openings 19 face each other and are detachably coupled to each other by the fastening means 17.

On the other hand, the storage box according to the present invention, unlike the spool is stored in a coil form of a loose form that is not applied to the tension of the optical fiber bundle in a pan (pan) structure.

The two storage boxes of the fan structure are combined to form an elliptical shape or an eight shape. On the other hand, the drawer of the fan structure is similar to the spool, so it is impossible to withdraw from the first wound, so in order to achieve the object of the present invention, that is, in order to be able to be pulled out in both directions at the beginning and end of the optical fiber bundle simultaneously You have to manipulate it.

FIG. 3 schematically illustrates a procedure for manipulating bidirectional drawing in an optical fiber bundle storage box for bidirectional drawing according to the present invention.

First, an optical fiber bundle winding device (not shown) for winding an optical fiber bundle is installed in a storage space 16 of the first storage box body 11 to operate and wind the optical fiber bundle. After winding the fixed length, move the winding device to the second storage box body 12 and install it and wind the remaining length (see 3a). If it is wound around the second storage box half (11, 12), there is no need to check the length of the drawer for each future direction during the field work.

When the winding by length is completed as described above, the optical fiber bundle of the second storage half body 12 wound up later has no problem in drawing for laying because the end 2 is raised upward, but the first storage half body 11 initially wound The optical fiber bundle of vice versa is reversed, that is, withdrawal is impossible since the start end 1 is laid underneath.

Accordingly, as shown in FIG. 3B, a separate third storage compartment half 13 and a lid 18 are prepared in advance, and then the second storage compartment half 12 covers and secures the lid 18. On the storage box half 11, the third storage box half 13 is brought upside down, and then the entire storage box is turned over to transfer the optical fiber bundle wound around the first storage box half 11 to the third storage box half 13 (see FIG. 3C). The bundle is contained in a loose state, making this transfer easier.

After confirming that the optical fiber bundle has been moved, carefully loosen the fastening means 17 to separate the storage half and remove the empty first storage half. Lifting the first storage box half 11 causes the second storage box half and the third storage box half 13 to be placed in opposite directions, so that only the second storage box half with the lid is flipped once again in the opposite direction. Then, when coupled using the fastening means 17, the starter 1 and the end 2 of the optical fiber bundle to both the second storage box body 12 and the third storage box body 13 is kept up.

In the above description, it should be understood that those skilled in the art can only make modifications and changes to the present invention without changing the gist of the present invention as it merely illustrates a preferred embodiment of the present invention.

As described above, according to the present invention, at the time of laying the optical fiber or the optical fiber bundle, it is possible to simultaneously pull out from one storage, thereby reducing the work time by half. In addition, if the length of laying in each direction is different, the length of both sides can be accurately measured and prepared in advance, so that the work of checking the drawing length of each direction is not performed at the work site, thereby improving the convenience of the work.

1 is a plan view showing a bidirectional drawer optical fiber bundle storage box according to the present invention,

Figure 2 is a perspective view of the stored half body according to the present invention,

Figure 3a to 3d is a state of use of the bidirectional drawer optical fiber bundle storage box according to the invention.

<Description of the symbols for the main parts of the drawings>

One ; Fiber bundle start 2; Fiber optic bundle ends

11; First bin half body 12; 2nd bin half

13; Third bin half body 14; Central column

15; Case 16; Storage space

17; Fastening means 18; cover

Claims (1)

In the optical fiber bundle storage bin for bidirectional withdrawal which can withdraw the optical fiber bundle in both directions, A pair of storage bins consisting of a cylindrical center column for winding the optical fiber bundle, a case formed at a lower end of the central column to secure a storage space of the optical fiber bundle, and an opening in which one end of the side portion of the case is open; Separately coupled to each other via a detachable means so as to face each other, coupled to each other, a separate storage half and a cover for storing the bi-directional drawer optical fiber bundles are further provided to enable bi-directional drawing.