KR100760715B1 - Inner module of under ground optical fiber cross - connection apparatus - Google Patents

Abstract

The present invention discloses an internal module of an underground optical intermediate switching device for coupling an optical connector stored in an enclosure and used for distribution / transition of an optical cable.

The present invention is a connector panel which is disposed in the longitudinal direction in the center of the housing and the adapter is selectively coupled, the rotary plate installed on both sides of the connector panel to be rotated in the opposite direction to each other, the direction folded in the connector panel at the end of the rotary plate It consists of a storage tray that is installed to be rotated to the side, and a connection tray that is installed to be horizontally expanded or folded on the bottom of the storage tray, the storage tray is folded in the connector panel, the connection tray is in the storage tray It can be folded.

According to the present invention, the arrangement of the connector panel portion, the connection tray, and the storage tray constituting the internal module can be made high density, and the connection / clamping processing and the distribution / switching operation of the optical connector are easy.

Description

INTERNAL MODULE OF UNDER GROUND OPTICAL FIBER CROSS-CONNECTION APPARATUS}

1 is a perspective view showing a conventional optical intermediate switching device for outdoor use,

Figure 2 is a perspective view showing the internal module of the underground optical intermediate switching device according to the present invention,

3 is a perspective view showing a connector panel of an internal module according to the present invention;

4 is a plan view showing a state in which the inner module is deployed in accordance with the present invention;

5 is a plan view showing a folded state of the internal module according to the present invention.

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

10; Connector panel 11; Upper fixing plate

12; Lower fixing plate 13; Adapter Mount

14; Frame 15; Adapter mounting groove

16; Fixing bracket 20; Tumbler

21; First hinge means 22; Second hinge means

30; Storage tray 31; Third hinge means

32; Extension 33; Protection guide

40; Connection tray 41; Optical fiber storage means

50; Locking means 51; latch

52; Brace

The present invention relates to an underground optical intermediate switching device for coupling an optical connector used for distributing / switching an optical cable, and more particularly, to densify the arrangement of a connector panel portion, a connection tray, and a storage tray constituting an internal module. The present invention relates to an internal module of an underground optical intermediate switching device that is easy to connect, connect, filter, and distribute / transfer an optical connector.

In general, an optical intermediate switching device is installed for efficient distribution / switching of a fiber optic cable from a telephone station and a distribution fiber cable to subscribers on an optical cable line.

Optical connection enclosures are used for connection and distribution of optical cables. However, semi-permanent connection methods using fusion splicing or mechanical connectors are used for connection in the connection enclosures, which is not suitable as a distribution device in which distribution of optical cables frequently occurs. . Therefore, a distribution apparatus has been developed to enable rapid distribution switching by applying an optical connector to the distribution switching between optical cables.

In particular, the optical intermediate transfer device using the optical connector is required to seal the enclosure so that it can be applied to high humidity environments such as underground water supply.

US Pat. No. 5,734,776 discloses an optical intermediate transfer device having an internal module that can be applied stably to a high humidity environment such as an acceptance hole by using an enclosure having excellent sealing against external environments, and to enable distribution switching using an optical connector. Doing.

1 is a perspective view showing an optical intermediate switching device according to the prior art, the enclosure 100 consisting of a cylindrical stopper 101 and the enclosure 102, and the inside of the enclosure is stored in the inlet and outgoing optical cable It consists of an internal module 200 for coupling the optical connector used for distribution / transfer. The internal module may include a fixing plate 201, a connector panel 202, a connection tray 204, and a foil (not shown). And the like. The fixing plate 201 is installed in the longitudinal direction of the housing 100 in the center of the stopper 101, the connection tray is coupled to both sides of the fixing plate 201. One side of the fixing plate 201 is the fixing plate 205 for installing the dust in the longitudinal direction, The connector panel 202 is rotatably coupled in both ends of the fixing plate 205 in the longitudinal direction. That is, the connector panel unit 202 may be folded toward the fixing plate 201 or unfolded on the basis of the fixing unit 205. The connector panel portion 202 is bent inward in the longitudinal direction, and when folded, the entire shape of the internal module 200 is approximately hexagonal, so that the space inside the circular housing 100 can be efficiently used. . The connector panel portion 202 is equipped with a plurality of adapters. On the other hand, a plurality of inlets 103 are formed on the bottom of the stopper 101.

In the optical intermediate transfer device configured as described above, the feeder optical cable and the distribution optical cable or the distribution optical cable and the incoming optical cable enter the enclosure 100 through the inlet 103. Cable tension line of the optical cable entered into the enclosure 100 is fixedly coupled to the tension line fixing device installed on the bottom of the inner module 200 Support fiber cores (lead core and lead core) to protect them from external forces.

Incoming lead wires and lead wires are connected and fixed with one-sided jumper cords in the connection tray, and the connector of the one-sided jumper cords is selectively connected to the adapter. The connection work of the connection tray is performed in a state where the connector panel 202 is developed to secure a work space.

Meanwhile, both ends of the jumper cords are selectively connected to the adapter of the connector panel unit 202 for distributing / switching of the lead core wire and the lead core wire. The connecting operation of both ends of the jumper cords may be connected to each other from the outside in the folded state of the connector panel unit 202. The length of the jumper cords at both ends is arranged in the connection tray 204.

The optical intermediate transfer device of such a structure has an advantage of distributing / switching optical core wires by a simple operation using an optical jumper cord (both ends) from the outside because it is a structure that connects the lead core wires and the lead core wires with each other. The optical jumper cord is consumed unnecessarily much, and there is a difficulty in realizing a high density structure. For example, it is difficult to design with high density structure because 96 adapters should be installed, 96 optical jumper cords (one end), and 48 optical jumper cords (both ends) are required to switch between 48 cores. The cost rises.

Also, one The 48-core lead wire and jumper cord (one end) are connected and trimmed in the connection tray. It is difficult to secure enough space to organize the gowns, and the connection tray is mounted vertically, making it difficult to perform maintenance work such as connection and grooming.

In addition, since the optical jumper cord (one end) connected to the connection tray is fixed inside the connector panel, when the connector is attached to the adapter and the two connector panel parts are folded, the optical jumper cord (one end) needs to be adjusted. Since it is difficult to maintain, optical loss of the optical jumper cord (one end) occurs.

Therefore, the present invention is to solve such a conventional problem, a single switching method for directly connecting the incoming / outgoing core wires after the connection with the optical jumper cord (one-sided) rather than the mutual switching method to the distribution / transfer of the lead core and the lead core wires The purpose of the present invention is to provide an internal module of an underground optical intermediate switching device that can reduce the number of optical connectors required and thereby increase the density of the internal module and reduce the installation cost.

Another object of the present invention is to provide an internal module that can secure enough space for organizing the lead core wire and the jumper cord (one end) by organically combining the connector panel portion, the connection tray, and the storage tray.

Another object of the present invention is to provide an internal module that can maintain the connection tray in the horizontal direction during the dispensing / transfer operation, and easy maintenance work such as connection and rearranging.

Still another object of the present invention is to provide an internal module that can prevent the optical loss of the optical jumper cord (one end) by allowing the cord portion of the optical connector coupled to the adapter to maintain more than the allowable curvature even when the internal module is folded. To provide.

The present invention for realizing the above object is an internal module of an underground optical intermediate switching device for coupling an optical connector that is stored inside the enclosure and used for distributing / switching of an optical cable, and is disposed in the longitudinal direction at the center of the enclosure. A connector panel to which the adapter is selectively coupled, a rotating plate installed on both sides of the connector panel so as to be rotated in opposite directions, and a storage tray installed at the end of the rotating plate so as to be rotated in a direction folded into the connector panel; Consists of a connection tray that is installed to be extended in the horizontal direction at the bottom of the storage tray or folded in the storage tray, characterized in that the connection tray is folded on the storage tray, and the storage tray can be folded on the connector panel again.

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 according to the present invention.

Figure 2 is a perspective view showing the internal module of the underground optical intermediate switching device according to a preferred embodiment of the present invention.

As shown, the internal module of the present invention is a connector panel to which a plurality of adapters are mounted, a rotating plate installed on both sides of the connector panel so as to be rotated in opposite directions, and in a direction in which the connector panel is folded at the end of the rotating plate. It is composed of a storage tray that is installed to be rotated, and a connection tray that is installed to be extended in a horizontal direction at the bottom of the storage tray or folded in the storage tray.

3 illustrates a connector panel according to the present invention, wherein the connector panel 10 has a structure in which the adapter mounting portion 13 is vertically supported between the upper fixing plate 11 and the lower fixing plate 12. Adapter mounting portion 13 is formed on a plurality of frames 14 a plurality of adapter mounting grooves 15 at regular intervals to form a structure forming a module.

The plurality of frames 14 installed in the longitudinal direction form a structure arranged obliquely so as to utilize the space efficiently.

The lower fixing plate 12 has a fixing bracket 16 so that the lower fixing plate 12 can be fixedly installed in the enclosure.

Figure 4 is a plan view showing a state in which the storage tray and the connection tray of the internal module according to the present invention, Figure 5 A plan view illustrating a folded state of a storage tray and a connection tray of an internal module according to the present invention.

As shown in the drawing, a pair of first hinge means 21 is installed at both ends of the connector panel 10 in the vertical direction so that the pair of rotating plates 20 can be rotated. The pair of first hinge means 21 is installed between the upper fixing plate 11 and the lower fixing plate 12.

The pair of first hinge means 21 is installed in the diagonal direction of the connector panel 10, the pair of rotating plate 20 is configured to be rotated in the opposite direction to each other. The rotation angle of the rotating plate 20 in the first hinge means 21 is limited to a certain range. For example, it is appropriate to rotate within about 90 ° to 120 ° based on the connector panel 10.

On the other end of the rotating plate 20, the second hinge means 22 is provided in the vertical direction, respectively. The pair of second hinge means 22 is provided so that the storage tray 30 can be rotated in the vertical direction. The rotation angle of the storage tray 30 in the second hinge means 22 is preferably limited to within about 90 ° to 120 ° with respect to the rotating plate (20).

An extension part 32 is formed in the lower end of the storage tray 30 in the horizontal direction so that the third hinge means 31 is installed in the horizontal direction. The third hinge means 31 is provided so that the connection tray 40 can be unfolded in the horizontal direction or folded in the storage tray 30.

On the other hand, after the connection tray 40 is folded in the storage tray 30 is provided with a locking means 50 for fixing the storage tray to the upper fixing plate 11 of the connector panel portion. A clasp 51 is provided at an upper end of the storage tray 30, and a clasp 52 is provided at an upper center of the connector panel part to hook the clasp 51 to the clasp 52 so that the connection tray 40 and the storage tray ( 30) can be kept folded.

A plurality of protection guides 33 are provided in the storage tray 30 to organize the length of the optical jumper cord (one end), and inside the connection tray 40, the rearranging of the optical fiber and the optical jumper cord (one end) are provided. The optical fiber storage means and the connector fixing part are provided so that the connection with the optical fiber can be made.

When the internal module according to the present invention having such a structure is intended to perform maintenance work such as optical fiber inlet, the rotating plate 20 and the storage tray 30 are deployed in an S shape like a wing, centering on the connector panel 10. The connection tray 40 may be deployed in a horizontal direction in a state where the storage tray 30 is deployed. On the other hand, when the work is finished and the internal module is to be stored in the housing, the sides of the storage tray 30 and the connection tray 40 are folded face to face on both sides of the connector panel 10 when viewed from the top as a whole. Make a quadrilateral shape.

On the other hand, the optical fiber that enters through the inlet of the enclosure not shown is introduced into the connection tray 40. In the connection tray 40, the work of arranging the incoming optical fiber and the connection with the optical jumper cord (one end) are performed. When the optical jumper cord (one end) passes from the connection tray 40 to the lower portion of the storage tray 30 after connection, Arranged in an "8" shape so that the allowable curvature radius can be maintained even when the connection tray 40 is folded in the storage tray (30).

The optical jumper cord (one end) that has passed to the storage tray 30 is connected to the connector panel 10 via the rotating plate 20. At this time, the dressing of the optical jumper cord (one end) is tidyed by the protection guide 33 provided in the storage tray 30. Since the adapter is mounted obliquely along the obliquely installed frame 14, it is possible to realize the radius of curvature of the optical connector cord and increase the module density.

Meanwhile, the present invention forms a single switching method of directly connecting an optical jumper cord (one end) to an incoming / outgoing core when distributing / transforming the incoming core wire and the outgoing core wire. Can be cut in half.

On the other hand, the internal module applied to the present invention is designed based on the SC type optical connector, it is also possible to increase the receiving core of the internal module by applying a more compact MU, LC type optical connector.

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, an optical connector required by a single switching method of directly connecting an incoming / outgoing core wire after connecting with an optical jumper cord (one end) rather than a mutual switching method to the distribution / switching of the incoming core wire and the outgoing core wire By reducing the number of modules, the internal module can be denser and the installation cost can be reduced.

In addition, the connector panel portion, the connection tray, and the storage tray can be organically combined to secure sufficient space for arranging the lead core wire and the jumper cord (one end).

In addition, it is possible to maintain the connection tray in the horizontal direction during dispensing / switching operations, it is easy to maintain and maintain the connection and the rearing.

In addition, even when the internal module is folded, the cord portion of the optical connector coupled to the adapter can maintain more than the allowable curvature, thereby preventing the optical loss of the optical jumper cord (one end).

Claims (9)

In the internal module of the underground optical intermediate transfer device for coupling the optical connector stored in the enclosure and used for the distribution / transfer of optical cable, A connector panel disposed longitudinally in the center of the enclosure, to which the adapter is selectively coupled; Rotating plates installed on both sides of the connector panel so as to be rotated in opposite directions; A storage tray installed at an end of the rotating plate so as to be rotated in a direction in which the connector panel is folded; An internal module of an underground optical intermediate transfer apparatus including a connection tray which is installed at the bottom of the storage tray in a horizontal direction to be folded or folded in the storage tray. According to claim 1, wherein the connector panel 10 is an adapter mounting portion 13 is vertically supported between the upper fixing plate 11 and the lower fixing plate 12, a plurality of frames 14 are arranged obliquely Inner module of underground optical intermediate switching device. According to claim 1, wherein the rotating plate (20) is an internal module of the underground optical intermediate switching device, characterized in that is rotated by the first hinge means (21) installed in the vertical direction at both ends of the connector panel (10). According to claim 1, wherein the lower end of the storage tray (30) is formed in the horizontal direction extending portion 32, the third hinge means 31 is installed in the horizontal direction so that the connection tray 40 in the horizontal direction Internal module of the underground optical intermediate transfer device, characterized in that it is expanded or folded in the storage tray (30). According to claim 1, wherein the inner module of the underground optical intermediate transfer apparatus, characterized in that the locking means (50) is installed at the upper end of the storage tray (30) and the upper portion of the connector panel (11). The method of claim 3, wherein The first hinge means (21) is an internal module of the underground optical intermediate switching device, characterized in that installed in the diagonal direction of the connector panel (10). The method of claim 3, wherein In the first hinge means (21), the rotation angle of the rotating plate (20) is an internal module of the optical fiber intermediate switching device for the underground, characterized in that limited to approximately 90 ° ~ 120 ° with respect to the connector panel (10). The method of claim 3, wherein Internal module of the underground optical intermediate transfer apparatus, characterized in that the storage tray 30 is rotated by the second hinge means 22 installed at the end of the rotating plate (20). The method of claim 8, In the second hinge means (22), the angle of rotation of the storage tray (30) is an internal module of the underground optical intermediate transfer device, characterized in that limited to within about 90 ° ~ 120 ° with respect to the rotating plate (20).

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