RU183440U1 - OPTICAL CLUTCH CASSETTE - Google Patents

Abstract

The utility model relates to connecting and branching couplings designed for direct and branching splicing of building lengths of optical communication cables laid in cable ducts, collectors, tunnels, cable entry rooms in automatic telephone exchanges and local networks, on supports of electric lighting networks, supports of communication lines and high voltage pylons of power lines. The presented optical clutch cassette contains a plate with surfaces for storing a supply of optical fibers and lodges located on opposite sides of the plate in the form of boards with slots for accommodating sleeves of intergrowths of optical fibers. The surface of the board of each lodgement intersects with the corresponding surfaces for storing stocks of optical fiber, while the lodges are located outside the storage area of the stock of fibers, and the surface of the board of each lodgement is perpendicular to the surfaces to accommodate the stock of optical fibers. Each lodgement is removable. The technical result of the utility model is to increase the convenience of installation and dismantling. 1 s.p. f-ly, 5 ill.

Description

This utility model relates to connecting and branching couplings intended for direct and branch splice of building lengths of optical communication cables laid in cable ducts, collectors, tunnels, cable entry rooms in automatic telephone exchanges and local networks, on supports of electric lighting network, support of communication lines and high voltage power line poles. The cassette is part of an optical clutch located inside its housing.

A well-known sleeve for an optical cable containing a tray on which cassettes are fixed for laying the lengths of the reserve stock of optical fiber modules and protected by the splices of the splices of optical fibers, two plastic ogolovnik, each of which is made with three pipes, a pipe in which are placed the cylindrical parts of the ogolovin and tray , and heat-shrinkable tubes for sealing the interfaces of the head-ends with the pipe and nozzles with optical cables, the coupling being characterized in that it contains two U-shaped brackets replicated at a certain distance respectively from the first and second ends of the tray, while on the opposite ends of the bracket there are three protrusions for attaching the ends of the optical cables, the head ends are attached to the ends of the tray, and the nozzles are hermetically sealed with the possibility of opening by trimming the end, each end of the optical cable fixed on two ledges of the bracket.

Optical cables are attached to the tabs of the brackets with metal clamps. The coupling contains technological reserves of optical fiber modules that are mounted on a metal tray in the spaces between the cassettes and the brackets. Optical fiber modules are fixed on cassettes using nylon ties. Each protrusion of the brackets has a T-shape and is made in the form of two mutually perpendicular plates, one of which is perpendicular to the end of the bracket and is designed to install a metal clamp. The optical cable contains a central power element, the end of which is fixed between a U-shaped curved bracket and a strap attached to the tray.

In another embodiment, the optical cable sleeve contains a tray located on the pipe, on which cassettes are fixed for laying the length of the technological stock of optical fiber modules and optical fiber splices protected by sleeves, a plastic ogolovnik made with at least three pipes, a plug, while in the pipe a ogolovnik is installed on one side, and a plug is installed on the other, and heat-shrinkable tubes are used to seal the interface between the ogolovnik and the pipe, the plug and pipe, and pipes with optical cables the coupling, characterized in that it contains a U-shaped bracket fixed at a certain distance from the first end of the tray, while at the opposite ends of the bracket there are three protrusions for attaching the ends of the optical cables, the headband is attached to the first end of the tray, and the nozzles are made hermetically sealed with the possibility of opening by trimming the end, each end of the optical cable is mounted on two protrusions of the bracket.

Optical cables are attached to the tabs of the brackets with metal clamps. Optical fiber modules are fixed on cassettes using nylon ties. Each protrusion of the brackets has a T-shape and is made in the form of two mutually perpendicular plates, one of which is perpendicular to the end of the bracket and is designed to install a metal clamp. The optical cable contains a central power element, the end of which is fixed between a U-shaped curved bracket and a strap attached to the tray (RU 2229147 C1, 05.20.2004 - analogue. Analogs also include: GB 2298053 A, 08.21.1996. RU 99116602 A, 07/10/2001. RU 2181496 C1, 04/20/2002. RU 2174250 C1, 09/27/2001).

The cartridge presented in this technical solution has common features with an analogue, which are such signs that each cartridge has a tray plate with lodges for laying the lengths of the reserve stock of optical fiber modules and protected with optical fiber splice sleeves and lodgements for attaching optical fiber splice sleeves .

The disadvantage of the analogue is the relatively large dimensions of the cartridge and the coupling, which complicates the installation of couplings, especially in cramped conditions and makes it difficult to place the couplings at the installation site.

A well-known cartridge optical clutch containing a plate with surfaces for storing a supply of optical fibers, and lodgements located on opposite sides of the plate, each lodgement is made in the form of a board with slots for accommodating sleeves of the splice of optical fibers (RU 2174249 C1, 09.27.2001 - prototype ) This cassette is used for laying reserve lengths of optical fibers. On the plate are two lodgement boards for fixing the sleeves. Each board is made with rows of racks, fixing in each slot in two floors of the sleeve of splices of optical fibers. The racks are located with an offset in each row along the sleeves and the sleeves of the lower row are fixed in the lodgements.

The disadvantage of the prototype is the relatively large dimensions of the cartridge, adversely affecting the dimensions of the coupling.

Another disadvantage of the prototype is also the increased complexity of installation and dismantling, since the storage area of the stock of fibers and lodgements for accommodating sleeves of fiber splices are placed on one surface of the plate.

The disadvantage of the cassette presented in the prototype is that its large overall dimensions - with a comparable capacity for placing the turns of fibers and their splices - complicate the installation and dismantling work.

In this case, the cassette presented in the prototype has a relatively complex structure, which also negatively affects the installation and dismantling work.

The cassette in the prototype is a separate unit, it is attached to the bracket bracket.

The splicing of optical fibers on the prototype cassette occurs in the plane of storage of the stock of optical fibers, which limits the space for storing the stock of fibers and the placement of a greater number of welded joints of fibers while observing the standard radius of bending of the fibers and the constant dimensions of the cassette.

The technical result of the utility model presented in this description is to increase the convenience of installation and dismantling.

The technical result was obtained by an optical clutch cassette containing a plate with surfaces for storing optical fiber stock, and lodgements located on opposite sides of the plate in the form of boards with slots for accommodating sleeves of optical fiber splices, and the surface of each lodgement board intersecting with the corresponding surfaces for storing optical fiber stocks while the lodgements are located outside the storage area of the stock of fibers, and the surface of the board of each lodgement is perpendi ocular to surfaces to accommodate a supply of optical fibers. Each lodgement is removable.

In FIG. 1 shows an optical coupler assembly.

In FIG. 2 - cassette optical coupling in the pre-installation position.

In FIG. 3 - coupling with removed housing (casing).

In FIG. 4 - a fragment of the cartridge and a removable tool tray.

In FIG. 5 - headband clutch.

The coupling contains a housing 1 (Fig. 1), which acts as a casing, the housing 1 in the working position is connected to the headband 2, in the joint between which there is a sealing ring-gasket 3 (Fig. 3). Golovinnik 2 has several nozzles 8 for input into the clutch of optical cables. In the housing 1 there is a cassette 4, which is mounted on the headband using a fastening element 6 and serves to accommodate the supply of optical fibers and their splices. On the cassette 4 from the head end are nodes 7 (Fig. 2) mounting the optical cable.

Cassette 4 (Fig. 2) is made in the form of an elongated flat tray - a plate with surfaces 18 for storing the technological stock of optical fibers and lodgements 5, which are boards with slots on the surface into which sleeves of splices of optical fibers are placed. Surfaces 18 for storing a supply of optical fibers are made symmetrically on both sides of the cassette - on the upper and lower sides (Fig. 2).

The cassette has longitudinal organizers 14, guiding organizers 15, organizers 16 for laying out optical fibers and fixing organizers 17. Organizers 14, 15, 16, 17 are raised above surface 18 so that technological stocks of optical fibers are laid in the space between them. Such a design of the optical fiber placement area provides the possibility of an unobstructed tightening of the optical fiber supply loops while maintaining the standard radius of their bending. In the upper part of the cassette, remote from the headband, there is a slot 19 (Fig. 2) for the passage of optical fibers between the sides of the cassette from one of the surfaces 18 storing the stock of fibers on the opposite surface. Similar slots can be made in other places of the cartridge.

The lodgements 5 are used to secure and store the sleeves of the splice of the optical fiber, they are located on the side of the cassette from two opposite sides. In the described embodiment, the lodgements 5 (Fig. 4) are removable and are attached to the sides of the cassette 4 by means of latches 11. In another embodiment, the lodgements can be made integral with the cassette. The lodges 5 are located perpendicular to the surface 18 of the stock of optical fibers (Fig. 3). Each lodgement is located outside the surface 18 to accommodate the stock of optical fibers, and the lodgement nests for laying sleeves of the splice of the optical fibers are directed to the outside of the cassette. In other embodiments, the lodgements of the lodgements may be oriented inward of the cassette or a combination case may occur when part of the nests is directed outward and the other part of the nests is directed inside the cassette.

On the cassette 4 (Fig. 3), guide elements 10 are made for guiding the housing 1 in the process of pushing it onto the cassette 4 towards the headband 2 during the assembly of the coupling. The housing 1 (Fig. 5) has slots 9 for a mounting tape (nylon screed) for mounting a mounted sleeve, for example, to a cable.

In the headband 2 (Fig. 5), holes 12 are made for possible fastening of the coupling to the clutch suspension brackets or supporting elements of the support (not shown). In the headband 2, an element 13 is also made for installing a seal to fix the position of the headband on the case of the mounted coupling to control unauthorized access to the inside of the coupling.

Sealing the housing and the headband is carried out using the sealing ring 3 (Fig. 3).

The installation of the coupling is as follows. Before installation, the housing 1 is removed from the headband 2 couplings. Optical cables are led through the nozzles 8 and after cutting the cable sheaths to the required length, fasten the power elements of the cables to the cassette 4 using the attachment points 7. After welding the optical fibers, their reserves are placed on the surfaces of the 18 cassettes, and heat-shrinkable or mechanical sleeves with fiber splices placed in the free nests of the cradles 5. Moreover, if the supply of one of the fibers being welded is placed on the surface 18 on one side, and the supply of the other fiber is placed on the opposite side of the cassettes s 4, then pass one of the spliced fibers through the slot 19. After splicing all the fibers and stacking their stocks and sleeves of the splices, the housing 1 is pulled through the cassette 4 on the headband 2 and using fastening elements (not shown) are fixed to each other.

This design of the cartridge allowed to significantly reduce its dimensions and at the same time maintain its technical and operational characteristics. The reduction in size is ensured due to the fact that the lodgements in the form of boards with slots are located perpendicular to the surfaces of the cassette, designed to store a stock of optical fibers.

At the same time, an increase in the convenience of installation and dismantling work was achieved due to the fact that lodgements with sockets for accommodating sleeves of splices of optical fibers are located outside the storage area of the stock of fibers.

Claims (2)

1. The optical clutch cassette, containing a plate with surfaces for storing a supply of optical fibers, and lodgements located on opposite sides of the plate in the form of boards with slots for placing sleeves of splice optical fibers, characterized in that the surface of the board of each lodgement intersects with the corresponding surfaces for storing stocks optical fiber, while the lodgements are located outside the storage area of the stock of fibers, and the surface of the board of each lodgement is perpendicular to FOR A stock placement of optical fibers. 2. The cartridge according to claim 1, characterized in that each lodgement is removable.

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