RU124822U1 - DEVICE FOR MOUNTING A REMOVABLE CASSETTE OF A CROSS OF AN OPTICAL COMMUNICATION LINE - Google Patents

Abstract

1. A fastener for a removable cross-country cassette of an optical communication line, characterized in that it comprises a first part located on a supporting element of the cross-body and representing a bracket with two protruding flat supports with coaxial holes, and a second part located on the end side of the cassette and representing two elongated supports with axes at their ends and an elongated elastic tongue protruding towards the supports, while in the working position of the cartridge, these axes are located in the coaxial holes of the crown supports matte, the elastic tongue in the indicated position is located with the possibility of interaction with the side surface of the bracket support, and when removing the cartridge from the bracket, the elastic tongue is made with the possibility of bending it to the free passage above the bracket support. 2. The device according to claim 1, characterized in that the bracket is made with supports having a stepped shape. The device according to claim 1, characterized in that the axes on the supports of the cartridge have different lengths.

Description

The technical solution relates to means for the construction of optical communication lines, in particular, to distribution cabinets (crosses), designed for terminal cutting, distribution and switching of fibers of optical communication cables.

The cross-section cabinet contains one or several cassettes attached to the bottom of the cabinet for laying splices of optical fibers, as well as a patch panel attached to the case with adapters installed on it — sockets designed to install optical connectors. Such cross-cabinets provide ease of installation, maintenance and operation if the number of fibers in the optical cables mounted in them is not large. If there are a lot of fibers in the cable, the installation and maintenance of optical connectors is difficult, since the adapter sockets are located on the cross panel in several rows, so access to the optical connectors located in the lower rows is difficult. In this regard, a significant role is played by the means of connecting the cassettes with the supporting element of the cross.

A more convenient design of a switchgear with a modular cross-block for accommodating a large number of optical connectors is described in patent RU 2371743, 03/27/2009, analogues of which are technical solutions described in US 5100221 A, 03/31/1992; RU 2138067 C1, 09/20/1999; RU 2059258 C1, 04/27/1996 and RU 2071074 C1, 12/27/1996).

In a modular cross block for an optical communication line (patent RU 2371743), there are rotary plates on which cassettes with splices of optical fibers are mounted, each rotary plate is L-shaped, its axis of rotation is perpendicular to the plane of one part of the L-shaped plate, and for mounting a cassette with splices of optical fibers is located on another part of the plate.

US Pat. No. 5,740,299 describes a modular cross block for an optical communication line that acts as a switchgear, which consists of a panel with ordered channels for laying optical fiber fibers and hinged on the panel with a plurality of swivel cartridges for storing splice and excess length of optical fibers. This device does not provide for the use of optical pigtails and optical adapters, sockets, therefore, if it is necessary to measure or change the switching circuit of optical fibers, it is necessary to destroy the splices of optical fibers.

The closest technical solution to the technical solution presented in this description is a modular cross block of an optical communication line containing a load-bearing wall on which a bracket with step-shaped supports is fixed, while a removable cassette is pivotally connected to each support with respect to the rear wall and the bracket designed to fix and store optical fibers of a communication cable and their splices in it (RU 101210 U, published January 10, 2011). In this cross block, each hinge connection of the cartridge with the bracket and its step-shaped supports is made by means of a hinged shelf pivotally connected to the rear wall and step-shaped supports, while each specified shelf has elements for mounting the cassette on it, Common features of the known device and presented in this description the device is that the fastening device of the removable cassette cross-country optical communication line contains the first part located on the supporting element of the housing of the cross-section and represents a bracket with two protruding flat supports with coaxial holes, and a second part located on the cassette. The known design significantly complicates the process of installing and removing cassettes, it also complicates the design of the cross unit and creates the inconvenience of working with it when servicing optical communication lines.

The technical result of the utility model is to simplify the design of the device and increase the convenience of servicing optical communication lines.

The technical result is obtained by the attachment device of a removable cross-country cassette of an optical communication line, characterized in that it comprises a first part located on a supporting element of the cross-body and representing a bracket with two protruding flat supports with coaxial holes, and a second part located on the end side of the cassette and consisting of two elongated supports with axes at their ends and an elongated elastic tongue protruding towards the supports, while in the working position of the cartridge, these axes are located in the coaxial holes of the bracket supports, the elastic tongue in the indicated position is arranged to interact with the side surface of the bracket support, and when the cartridge is removed from the bracket, the elastic tongue is made to bend to the free passage position above the bracket support. The bracket is made with supports that have a stepped shape. The axles on the cassette supports are of different lengths.

Figure 1 shows a device located on the cross-wall of an optical communication line;

Figure 2 - removable cartridge cassette in a top view;

Figure 3 - place a in figure 2;

Figure 4 - removable cartridge in a spatial image;

Figure 5 is a fragment of a cartridge.

The device (figure 1) contains the first part located on the supporting element of the cross-body - on the wall 1 of the cross, while the first part is a bracket 2 with two protruding flat step-shaped supports 3 having coaxially made holes in them. The device has a second part located on the front side of the removable cartridge 4, while the second part is two elongated supports made on the front side 5 of the cartridge and forming an L-shaped corner recess 6 of the cartridge, in which there are axes 7 and 8, mounted on elongated supports 9 cassettes (figure 2). The second part contains an elongated elastic tongue 10 that protrudes toward one support 9, while in the working position the cassettes axes 7 and 8 are located in the coaxial holes of the bracket supports, the elastic tongue in this position is arranged to interact with the side surface 11 of the bracket support (Fig. 1 ), and when removing the cartridge from the bracket, the elastic tongue is made with the possibility of bending it up to the position of its free passage above the step-like support 3 of the bracket. Axes 7 and 8 have different lengths. A removable cartridge 4 is connected to each support 3 pivotally with the possibility of rotation relative to the rear wall 1 and the bracket 2. The cartridge is designed to fix and store optical fibers of the communication cable and their splices in it.

In the indicated L-shaped recess 6 there are axes 7 and 8, made integral with the cartridge. The axes are designed in such a way that they are oriented in one direction, in particular, they are directed to one of the sides of the cartridge. Axes 6 and 7 are coaxially located in the holes of the stepped supports of the bracket 2.

The elastic tongue 10 (Fig.3-5) is made on the upper side of the cassette at the same time with it and is located above the axes 6 and 7 of the cassette with the possibility of its interaction in the working position of the cassette with one side 11 of the step-shaped support (Fig.1) and the possibility of passage and sliding over the edge 12 of the stepped support 3 in the position of removal of the cartridge from the bracket. The tongue 10 has a limiter 13 (Figs. 1-5) of the movement of the cartridge 4 in the recess 6. The limiter 13 in the process of operation of the block abuts against the side 11 of the support 3. The holes in the supports 3 of the bracket are shown at 14.

The device operates as follows. The cross, on the wall 1 of which (Fig. 1) there are many cassettes 4, is made in such a way that it makes it possible to pivotally rotate the cassettes attached to the bracket 2 (two cassettes are shown, the rest are removed). For ease of installation and maintenance, each cartridge 4 is mounted on the bracket 2 in its horizontal position. To do this, the elastic tongue 10 is brought up and the cassette axes 7 and 8 are inserted into the holes 14 of the supports 3 by moving the axes in the direction in which the axes are oriented (from right to left in FIG. 1). After introducing the axles 7 and 8 into the holes of the supports 3, the tongue 10 is released and it moves under the action of the elastic forces of the tongue to its original working position. In this case, the stop 13 also occupies a working position in which it interacts with the side 11 of the support 3. In this position, the stop 13 prevents the cassette 4 from being removed from the bracket 2 and the rear wall 1 of the cross, and also prevents the spontaneous separation of the cassette from the back wall. When working with optical fibers of communication lines mounted on cassettes 4, the cassettes are installed in a vertical working position by turning them relative to the supports 3, with each cassette being fixed to the adjacent cassette in its vertical position by special means. If necessary, the cassettes are sequentially moved to a horizontal position, the desired cassette is selected for its maintenance, the necessary installation work is carried out, or it is removed from the cross in the described manner, which significantly increases the convenience of the installers when installing and removing the cassettes, as well as when servicing fiber-optic lines communications containing blocks located in crosses in a limited workspace. The device, in addition to the obtained simplicity of design and increased ease of maintenance, has significantly simplified the design of the cross by eliminating from it special elements that make articulated connections of the cassettes with the bracket.

Claims (3)

1. A fastener for a removable cross-country cassette of an optical communication line, characterized in that it comprises a first part located on a supporting element of the cross-body and representing a bracket with two protruding flat supports with coaxial holes, and a second part located on the end side of the cassette and representing two elongated supports with axes at their ends and an elongated elastic tongue protruding towards the supports, while in the working position of the cartridge, these axes are located in the coaxial holes of the crown supports matte, the elastic tongue in the indicated position is arranged to interact with the side surface of the bracket support, and when the cartridge is removed from the bracket, the elastic tongue is made to bend to the free passage position above the bracket support. 2. The device according to claim 1, characterized in that the bracket is made with supports having a stepped shape. 3. The device according to claim 1, characterized in that the axis on the supports of the cartridge have different lengths.

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