KR20230103503A - Central strength member and aerial structure and optical fiber tap for aerial - Google Patents

Abstract

The present invention relates to an optical tap for processing, comprising: an enclosure having a main body with an open front surface and a main cover covering the open front surface of the main body; first optical cable ports provided on one side of the main body and into which first optical cables are introduced; second optical cable ports provided on the other side of the main body facing the one side and into which a second optical cable is introduced; It is provided on the main body and includes center tension line fixing brackets for fixing the center tension line in the first and second optical cables introduced through the first optical cable port and the second optical cable port; The central tension line fixing bracket may be provided to simultaneously fix the central tension lines in the first and second optical cables introduced through the first optical cable port and the second optical cable port.

Description

Center tension line, processing hanger structure and light tap for processing {CENTRAL STRENGTH MEMBER AND AERIAL STRUCTURE AND OPTICAL FIBER TAP FOR AERIAL}

The present invention relates to a communication line facility for signal transmission in a high-speed network system, and more particularly, to an optical tap capable of connecting an optical cable connection and a drop cable for a subscriber terminal to a connector.

1 is a network configuration diagram briefly showing the structure of a general FTTH optical fiber network.

In the FTTH optical fiber network, an optical cable is connected from a telephone office (CO) 10 to a subscriber's house 20. In such an FTTH fiber optic network, an underground optical junction box (30a) installed in an underground manhole, an aerial junction box (30b) and an optical tap (30b) installed on a pole or wall, and a clamshell installed on a pole or wall It is connected to the subscriber's house 20 via an optical tap or the like. The optical tap 40 is connected to each subscriber's house 20 by a drop cable 60.

As such, the existing FTTH fiber optic network has a structure in which an optical cable is connected to the subscriber's house 20 only through an optical junction box and an optical terminal box. An optical tap capable of being connected to outdoor wires is used.

However, although the light tap should be firmly fixed to the claw wire according to the prior art, natural disasters cause separation failure of the claw wire and light tap, and the central tension line is fixed with a bolt method and is easily separated, resulting in frequent failure after opening. there is.

An object of the present invention is to provide an optical tap that suppresses failure through a structure in which a tension line is not separated and a structure in which a central tension line is not separated.

An object of the embodiments of the present invention is to provide an optical tap with stable fixation of a claw wire.

The problem to be solved by the present invention is not limited thereto, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to one aspect of the present invention, the enclosure having a main body with a front open, and a main cover covering the open front of the main body; first optical cable ports provided on one side of the main body and into which first optical cables are introduced; second optical cable ports provided on the other side of the main body facing the one side and into which a second optical cable is introduced; It is provided on the main body and includes center tension line fixing brackets for fixing the center tension line in the first and second optical cables introduced through the first optical cable port and the second optical cable port; The central tension line fixing bracket may be provided with an optical tap for processing to simultaneously fix the central tension lines in the first and second optical cables introduced through the first optical cable port and the second optical cable port.

In addition, the central tension line fixing bracket is formed at a predetermined distance from the first seating groove in which the central tension line of the first optical cable is seated and the first seating groove, and the central tension line of the second optical table is seated, respectively. a center tension line fixing unit having second seating grooves formed on upper surfaces thereof; and a center tension line bracket screwed to an upper surface of the center tension line fixing part and simultaneously pressing the center tension line of the first optical cable and the center tension line of the second optical table located in the first and second seating grooves. can do.

In addition, the first optical cable port and the second optical cable port may be provided offset from each other so that the central tension line of the first optical cable and the central tension line of the second optical table do not interfere on the central tension line fixing part.

In addition, further comprising a processing hanger for fixing the enclosure to the processing branch line; The processing hanger is installed on both left and right sides of the upper surface of the main body, and has a U-shaped concave groove so that the processing branch line is positioned and the insertion hole into which the processing branch line is inserted; A fixing bolt screwed to the hanger to press the processing branch line in the direction of the concave groove may be included so that the processing branch line located in the concave groove does not depart from the concave groove.

In addition, a subscriber distribution unit provided on the outside of the rear surface of the main body; a subscriber unit cover installed outside the rear surface of the main body to cover and protect the subscriber distribution unit; Further comprising a subscriber part gasket provided on the outer side of the rear surface of the main body to surround the subscriber distribution part and into which light outdoor wires are inserted; The subscriber unit gasket includes a gasket body inserted into a gasket insertion groove formed in the main body; a light outdoor ray inlet formed so that the light outdoor ray passes from the front to the rear of the gasket body; a U-shaped groove opened from the top surface of the gasket body to the light outdoor line inlet so that the light outdoor light is inserted into the light outdoor light inlet from the top surface of the gasket body; and a thin film protruding from the U-shaped groove so that the photonic outdoor rays located at the photonic outdoor-ray inlet do not escape through the U-shaped groove, wherein the thin film is formed on both sides when the photonic outdoor rays are inserted from the U-shaped groove into the photonic outdoor-ray inlet. It is made of a pair of left and right through the incision line so that it can be opened, and can be provided perpendicularly to the front and rear surfaces of the gasket body, respectively.

Embodiments of the present invention are easy to fix tension, and fixing the claw wire is stable.

The effects of the present invention are not limited to the above-mentioned effects, and effects not mentioned will be clearly understood by those skilled in the art from this specification and the accompanying drawings.

1 is a network configuration diagram briefly showing the structure of a general FTTH optical fiber network.
2 and 3 are perspective views of a connector-type junction box according to an embodiment of the present invention.
4 is a view showing a subscriber distribution unit on the rear side of the connector type junction box according to the present invention.
5A to 9 are diagrams for explaining an adapter.
10A and 10B are diagrams for explaining an operation process of connecting an optical jumper cord in a connector type junction box.
11 is a view showing the cable holder of the main body.
12 is an exploded perspective view of the cable holder.
13 and 14 are views showing a state in which an optical cable is fixed to a cable holder.
15 is a cross-sectional side view of the cable holder.
16 is a perspective view showing a gasket of the subscriber part, and FIG. 17 is an enlarged view of main parts of the cable gasket part.
18a to 18c are views for explaining a fixing bracket.
19A and 19B are views for explaining a processing hanger.

Hereinafter, an embodiment of the present invention will be described in more detail with reference to the accompanying drawings, FIGS. 2 to 19B. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the following examples. This embodiment is provided to more completely explain the present invention to those skilled in the art. Accordingly, the shapes of elements in the figures are exaggerated to emphasize clearer description. In the drawings, the same reference numerals are assigned to components performing the same functions.

(Example)

2 and 3 are perspective views of an optical tap for processing according to an embodiment of the present invention. 4 is a view showing a subscriber distribution unit on the rear side of an enclosure in an optical tap for processing according to the present invention.

Referring to FIGS. 2 to 4 , the optical tap 10 for processing includes a housing 100 , a storage unit 300 and a subscriber distribution unit 400 .

The enclosure 100 is fixed to an overhead earth wire 40 by a processing hanger 190. An optical cable to be connected to the enclosure 100 (Optical Cable; 20;) and a drop optical cable (30; see FIG. 4) are introduced. The optical cable 20 and the light outdoor line 30 are introduced into and connected to the enclosure 100 and the subscriber distribution unit 400 in an open state. After completion of the construction, the enclosure 100 and the subscriber distribution unit 400 are kept closed in order to protect the connecting portion of the optical cable 20 and the connecting portion of the optical fiber from the external environment.

The processing hanger 190 is for fixing the housing 100 to the processing branch line 40 so that the housing 100 is suspended in the air. The processing hanger 190 may be installed at a plurality of points on the upper surface 115 of the main body 101 . For example, the processing hangers 190 may be installed on both left and right sides of the upper surface of the main body 101, respectively. In this embodiment, the processing hanger 190 has been shown and described as an example, but processing hanger 190 may be used in a variety of structures capable of fixing the enclosure 100 to the processing branch line 40.

19A and 19B are views for explaining a processing hanger.

Referring to FIGS. 19A and 19B , a processing hanger 190 may include a hanger 194 and a fixing bolt 196 .

The hanger 194 is installed on both left and right sides of the upper surface of the main body, and has an insertion hole 191 into which the processing branch line 40 is inserted and a U-shaped concave groove 192 so that the processing branch line 40 is positioned. The processing branch line 40 located in the concave groove 192 is pressed by the fixing bolt 196 to prevent any separation from the concave groove 192 . The fixing bolt 196 is screwed to the hanger 194 and presses the processing branch line 40 in the direction of the concave groove 192 .

Referring back to FIGS. 2 to 4 , the enclosure 100 may include a main body 101 and a main cover 102 . The main body 101 and the main cover 102 have a front-open structure, and one end is hinged to be opened and closed in a rotational manner.

The main body 101 has a rear surface 112, both side surfaces 114, a top surface 115, and a bottom surface 116, and is formed in a box shape with an open front surface. The housing gasket 180 is installed on the edges of the side surfaces 114, top surface 115, and bottom surface 116 of the main body 101. The main body 101 has optical cable ports 122 on both sides 114. The optical cable 20 is introduced through the optical cable port 122 .

The rear side 112 of the main body 101 has a subscriber unit opening (not shown) for sending a cord cable to the subscriber distribution unit 400.

Each of the optical cable ports 122 may include a cable gasket 124 and a cable holder 600 . The cable holder 600 will be described in detail later.

The optical cable 20 is introduced into the main body 101 through the inlet 125 of the innermost cable gasket 124, and the optical cable 20 is introduced into the main body by the cable holder 600 ( 101) can be fixed.

On the other hand, the central strength member (CSM) of the optical cable 20 introduced into the main body 101 is fixed by the central tension line fixing bracket 150, branched from the front end of the optical cable 20. The optical fibers 22 are connected and cross-dressed in the cross-dressing board.

18a to 18c are views for explaining a fixing bracket.

18A to 18C, the central tension line fixing bracket 150 is the center tension line in the first and second optical cables 20a and 20b introduced through the first optical cable port 122 and the second optical cable port 122. (21a, 21b) may be provided so that they can be fixed at the same time. The central tension line fixing bracket 150 may include a central tension line fixing part 152 and a central tension line bracket 156 .

The central tension line fixing part 152 is formed by being spaced apart from the first seating groove 153 in which the central tension line 21a of the first optical cable 20a is seated and the first seating groove 153 by a predetermined distance. Second seating grooves 154 in which the central tension lines 21b of the optical cable 20b are seated are formed on the upper surfaces, respectively.

The central tension line bracket 156 is screwed to the upper surface of the central tension line fixing part 152 . The central tension line bracket 156 is provided to simultaneously press the central tension line 21a of the first optical cable and the central tension line 21b of the second optical table located in the first and second seating grooves 153 and 154. The central tension line 21a of the first optical cable and the central tension line 21b of the second optical table do not interfere on the central tension line fixing part 152, and the optical cable port 122 formed on one side and the other side face each other. The second optical cable port 122 formed in may be provided to be offset from each other. Here, the offset distance corresponds to the separation distance P1 between the first and second seating grooves 153 and 154 .

The main cover 102 is hinged to the bottom surface 116 of the main body 101. The main cover 102 seals the open front surface of the main body 101 to protect the connecting portion of the optical cable 20 and the connecting portion of the optical fiber 22 from the external environment.

Processing hanger 190 may be installed on top of the main body 101, since the main body 101 is fixed to the processing branch line 40 by the processing hanger 190, the housing 100 is the main cover ( 102) can be opened and closed by rotation. When the front of the main body 101 is closed by the rotation of the main cover 102, the first and main covers 101 and 102 are locked by the locking device 170. In addition, for connection construction of the optical cable, the first and main covers 101 and 102 may be unlocked by the locking device 170 .

The storage unit 300 is hinged to the main body 101 so as to be carried in and out by a rotation method. The dressing portion 300 may be erected so that the dressing plate 301 faces all directions (0°), may be reversed (180°), or may be unfolded such that the dressing plate 301 is horizontal to the ground (90°).

In the dressing unit 300 , the dressing plates 301 may be installed in a stacked manner. The dressing plate 301 includes a plate 310 and a guide 312 formed around an edge of the plate 310 . The plate 310 has a redundant space 320 in which the extra optical fibers 22 introduced into the enclosure 100 can be redundant, and a redundant board chip in which a plurality of slots in the shape of straight grooves are formed so that the optical fiber connectors are inserted ( 330) are provided. The redundant board chips 330 are located in the center of the redundant board 301, and the redundant spaces 320 are located on both sides of the redundant board chips 330.

The plate 310 is provided with loose tube inlets 314 . The loose tube inlet 314 is composed of a plurality of ribs at the edge of the plate 310 . An optical cable is press-fitted and fixed between the ribs. The loose tube inlet 314 is provided in a curved shape, this is to minimize a sharp bend when the optical cable is introduced through the loose tube inlet 314 and is overlaid in the redundant space 320.

The redundant space 320 is a part where the optical fibers of the optical cable are redundant, and is formed as a substantially circular empty space. The optical fibers are redundant while maintaining an allowable radius of curvature in the redundant space 320, and some of them are connected to a splitter (not shown).

A plurality of guide pieces 322 are provided around the dressing space 320 . The guide piece 322 extends away from the plate 310 and serves to guide the optical fiber of the optical cable to be overlaid so that it does not escape.

The subscriber distribution unit 400 is provided on the outer side 103 of the rear of the main body 101 . The subscriber distribution unit 400 includes an adapter 700 to which the light outdoor rays 30 coming from the outside and the cord cable 540 of the splitter module are connected, a connector cover 420 protecting the adapter 700, and subscribers A subscriber part gasket 430 provided on the outside of the rear surface of the main body 101 to surround the distribution part 400 may be included. The subscriber part gasket 430 includes a cable gasket part 440 into which the light outdoor rays 30 are inserted into one side.

The subscriber distribution unit 400 may be protected by the subscriber unit cover 490 . The subscriber unit cover 490 is rotatably installed on the outside of the rear surface of the main body 101 to cover and protect the subscriber distribution unit 400 .

The subscriber cover 490 is closed only by the weight of the subscriber cover 490 when the operator applies force in the closing direction once in the open state as shown in FIG. It is a top-down opening and closing method that can be maintained.

16 is a perspective view showing a gasket of the subscriber part, and FIG. 17 is an enlarged view of main parts of the cable gasket part.

Referring to FIGS. 16 and 17 , the subscriber part gasket 430 has a gasket body 431 . The gasket body 431 is inserted into the gasket insertion groove formed on the outer surface of the rear surface of the main body 101. A concave groove (G) is formed along the longitudinal direction on the upper surface of the gasket body 431, and the rim of the subscriber unit cover is fitted into the concave groove (G).

The light outdoor ray gasket part 440 of the subscriber part gasket 430 has a higher height than the other gasket body 431 . The light outdoor ray gasket unit 440 includes a light outdoor ray inlet 442 formed so that the light outdoor ray 30 passes from the front surface 431a to the rear surface 431b of the gasket body 431, and the gasket body 431 A U-shaped groove 444 that opens from the upper surface 431c of the gasket body 431 to the light outdoor line inlet 442 so that the light outdoor light 30 is inserted from the upper surface 431c of the light outdoor light inlet 442, and It includes a thin film 446 protruding from the U-shaped groove 444 so that the light outdoor light 30 located at the light outdoor light inlet 442 does not escape through the U-shaped groove 444. The thin film 446 may be formed as a left and right pair through an incision line so that the light outdoor ray 30 can be opened when inserted from the U-shaped groove 444 into the cable through-hole 442. The thin film 446 may be provided perpendicularly to the front surface 431a and the rear surface 431b of the gasket body 431 .

5A to 9 are diagrams for explaining an adapter.

Referring to FIGS. 5A to 9 , an adapter 700 may include a base part 710 and adapter parts 720 . The adapter unit 720 may be provided to be rotatable on the base unit 710 . The adapter parts 720 may be disposed along the longitudinal direction of the base part 710 .

The base part 710 may be mounted on the enclosure 100 . The base portion 710 has a hinge shaft 712, hooks 714, and insertion holes 716.

The adapter parts 720 are disposed along the longitudinal direction of the base part 710 . The adapter parts 720 may be detachably assembled from the base part 710 . The adapter unit 720 may include an adapter 730 to which the outdoor light 30 and the cord cable 540 are connected, and an adapter bracket 740 installed to surround a portion of the adapter 730 .

The adapter bracket 740 may be hingedly coupled to the base portion 710 . For example, the adapter bracket 740 has an open front, rear and one side, and has an internal space into which the adapter 730 is inserted and positioned through the open side. When the adapter 730 is coupled to the adapter cover 740, the front port 731 and the rear port 732 of the adapter 730 are exposed to the open front and rear surfaces of the adapter bracket 740. On the other hand, the adapter bracket 740 prevents any separation of the hinge portion 742 having a "C" cross-sectional shape coupled to the hinge shaft 712 of the base portion 710 and the adapter 730 inserted into the internal space It has a separation prevention unit 744 for this. The separation preventing portion 744 may be provided in a protruding shape. The separation prevention unit 744 has a hook shape with an inclined outer surface so that the adapter 730 can be easily inserted. The adapter bracket 740 has a protrusion 746 protruding from its bottom surface. The protrusion 746 is provided to be inserted into the insertion hole 716 formed in the base portion 710 .

The adapter 700 has a rotation prevention unit 770 to block any rotation in a state where the adapter bracket 740 is positioned horizontally on the upper surface of the base unit 710 . The anti-rotation part 770 is formed on the bottom surface of the first hook 772 and the adapter bracket 740 protruding upward from the upper surface of the base part 710, and the fitting groove 774 to which the first hook 772 is coupled. ) may be included.

Referring to FIGS. 10A and 10B, the subscriber distribution unit 400 is opened by opening the subscriber unit cover 490. The worker lifts the adapter part 720 to connect the light outdoor light 30 among the plurality of adapter parts 720 upward. Due to this, the front port 731 of the adapter 730 is exposed from the front of the subscriber distribution unit 400 .

Therefore, since the adapter 730 for opening a new optical communication line can be easily secured from the operator's line of sight and the working space can be secured, the operator can insert the light outdoor line 30 into the front port of the adapter 730 You can easily perform the work of connecting to . The optical jumper cord 30 is connected to the adapter unit 720 and then inserted into the cable gasket unit to complete the operation.

11 is a view showing a cable holder of the main body, FIG. 12 is an exploded perspective view of the cable holder, FIGS. 13 and 14 are views showing a state in which optical cables are fixed to the cable holder, and FIG. 15 is a side cross-sectional view of the cable holder. .

Referring to FIGS. 1 to 15 , the cable holder 600 may include a primary fixing part 601 and a secondary fixing part 602 .

The primary fixing unit 601 fixes the optical cable 20 while the sheath holder (lower) 610 and the sheath holder (upper) 620 are mutually coupled by a screw 630 fastening method. The secondary fixing unit 602 additionally fixes the optical cable passing through the primary fixing unit using a clamp.

The outer shell holder (lower) 610 of the primary fixing part 601 has a first groove 612 having a concave curved surface so that the optical cable 20 is positioned. The shell holder (lower) 610 is fixed to the bottom surface of the main body 101. The shell holder (upper) 620 is formed with a second groove 622 having a concave curved surface shape. The shell holder (upper) 620 is coupled to the shell holder (lower) 610 by screws 630 so that the second groove 622 faces the first groove 612. The outer shell holder (upper) 620 may have second grooves 622 provided with different curvatures on the lower and upper surfaces. The sheath holder (upper) 620 may be reversed according to the diameter of the incoming optical cable and fixed to the sheath holder (lower) 610.

The secondary fixing part 602 extends from the outer shell holder (lower) 610 in the direction in which the optical cable is introduced. The secondary fixing part 602 may include a fixing bracket 640 fixing the optical cable 20 passing through the first groove 612 . The fixing bracket 640 may include a support bracket 642 and a clamp 650. The support bracket 642 extends horizontally along the insertion direction of the optical cable 20 from the outer shell holder (lower) 610 and has a seating surface 644 on which the optical cable 20 is seated. The clamp 650 may be provided in the form of a band that binds and fixes the support bracket 642 and the optical cable 20 so that the optical cable 20 is fixed to the support bracket 642 .

The support bracket 642 has a separation prevention protrusion 646 preventing separation of the clamp 650 on its bottom surface. The seating surface 644 has the same concave curved shape as the first groove 612 and is provided to extend from the first groove 612 .

As described above, since the fixing bracket 640 is integrally provided with the sheath holder (lower) 610, the workability of the operator to fix the optical cable 20 is improved, and the optical cable is fixed in the primary fixing part 601. After being fixed again in the secondary fixing part 602, it is possible to stably fix the optical cable 20.

In the above, although the configuration and operation of the optical tap for processing according to the present invention has been shown according to the above description and drawings, this is merely an example and various changes and modifications are possible within the scope of the technical spirit of the present invention. am.

100: enclosure
300: heroine
400: subscriber distribution unit
700: adapter
710: base part
720: adapter unit
730: adapter
740: adapter bracket

Claims (5)

In the optical tap for processing:
An enclosure having a main body with an open front and a main cover covering the open front of the main body;
first optical cable ports provided on one side of the main body and into which first optical cables are introduced;
second optical cable ports provided on the other side of the main body facing the one side and into which a second optical cable is introduced;
It is provided on the main body and includes center tension line fixing brackets for fixing the center tension line in the first and second optical cables introduced through the first optical cable port and the second optical cable port;
The central tension line fixing bracket is
An optical tap for processing provided to simultaneously fix central tension lines in the first and second optical cables introduced through the first optical cable port and the second optical cable port. According to claim 1,
The central tension line fixing bracket is
A first seating groove in which the central tension line of the first optical cable is seated and a second seating groove formed spaced apart from the first seating groove by a predetermined distance and in which the central tension line of the second optical table are respectively seated are formed on the upper surface, respectively. The formed center tension line fixing part; and
A center tension bracket screwed to the upper surface of the center tension line fixing part and simultaneously pressing the center tension line of the first optical cable and the center tension line of the second optical table located in the first and second seating grooves. Optical tap for processing. According to claim 2,
The first optical cable port and the second optical cable port are provided offset from each other so that the central tension line of the first optical cable and the center tension line of the second optical table do not interfere on the central tension line fixing part. According to claim 1 or 2,
Further comprising a processing hanger for fixing the enclosure to the processing branch line;
The processing hanger
Hangers installed on both left and right sides of the upper surface of the main body and having an insertion hole into which a processing branch line is inserted and a U-shaped concave groove so that the processing branch line is located;
An optical tap for processing comprising a fixing bolt screwed to the hanger to press the processing branch line in the direction of the concave groove so that the processing branch line located in the concave groove does not depart from the concave groove. According to claim 1 or 2,
a subscriber distribution unit provided outside the rear surface of the main body;
a subscriber unit cover installed outside the rear surface of the main body to cover and protect the subscriber distribution unit;
Further comprising a subscriber part gasket provided on the outer side of the rear surface of the main body to surround the subscriber distribution part and into which light outdoor wires are inserted;
The subscriber part gasket
a gasket body inserted into a gasket insertion groove formed in the main body;
a light outdoor ray inlet formed so that the light outdoor ray passes from the front side to the back side of the gasket body;
a U-shaped groove opened from the top surface of the gasket body to the light outdoor line inlet so that the light outdoor light is inserted into the light outdoor light inlet from the top surface of the gasket body; and
Including a thin film protruding from the U-shaped groove so that the optical outdoor light located at the optical outdoor-ray inlet does not escape through the U-shaped groove,
the thin film
An optical tap for processing formed as a left and right pair through an incision line so that the light outdoor ray can spread to both sides when inserted from the U-shaped groove into the light outdoor ray inlet, and provided perpendicularly to the front and rear surfaces of the gasket body, respectively.

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