RU2717137C1 - Optical cable installation and distribution device housing - Google Patents

Abstract

FIELD: optics.

SUBSTANCE: invention is intended for its use in optical communication lines. Housing of device for installation and distribution of optical cables includes base with side and end walls, cover with collars, opening between one of end walls of base and adjoining to it cover bead. Housing has means for binding and fixation of cover to base of housing, in housing there is a cavity for placement of mounting panel in it, which is attached to base, which is equipped with means for its attachment to external bearing structures. Housing is equipped with a sealing unit located in the opening of the end wall of the base; the sealing unit has cylindrical holes and a plurality of grooves, on the joint lines of which the end wall of the base and the cover flange have passages for cable entry. At that, cylindrical holes of end wall and sealing unit are located mirror-like relative to each other, and slots are located on opposite side from cylindrical holes of sealing unit, at that, cylindrical holes are formed by semi-cylindrical grooves of sealing unit and semi-cylindrical grooves of gasket, slots are formed by recesses of upper part of sealing unit, as a result cylindrical holes and slots are formed by sealing block and gaskets. Surface of jointed perimeter of sealing unit is covered with elastic sealing material. At least one of passages for cables has cylindrical shape in form of groove. Mounting panel is connected to the sealing unit. Base and cover are connected by hinged detachable loop with device for fixation of open position of cover with latches with handles and spring loops. In closed state latch handles are fixed with screws. Elements for attachment to walls and pillars are made on body base.

EFFECT: technical result of invention is expansion of functional capabilities of housing and provision of input of optical cables into housing along two lines of joint, which increase number of cable entries for improvement of installation works.

7 cl, 8 dwg

Description

 This invention relates to cases of optical couplings and distribution cabinets, the designs of which provide the input of optical cables, including in the form of transit loops without cutting optical fibers, as well as for the removal of subscriber cables, placement in the inner space of the cassette for spliced optical fibers, optical adapters (sockets) for detachable switching of optical fibers, optical splitters (splitters), including in a modular design, as well as other components of fiber optic their lines of communication. The coupling is placed on the walls of buildings, poles of communication lines, poles of lighting and power lines, indoors and outdoors.

 A telecommunication box is known, including splice plates for fiber optic cables, while the box device includes a base and a cover that are interconnected via a sealed junction line. The box lid can be fixed on the base of the box. In the inner part of the box is a block of splice plates. The splice plate unit includes splice plates mounted on the base. A splitter may be located on the base. The base of the splice plate assembly may also include a grooved plate that is fixed to the base. One or more input / output nodes provide the ability to input and / or output cables from the box through sealed ports. The input / output nodes may include means for fastening the reinforcing elements of the cable and / or guide means for tubes with fiber. The invention provides the creation of a device open for access and its high sealing (RU2608084C2, 01/13/2017).

 The design flaw of a telecommunication box with a splice plate unit according to RU2608084C2 patent is that the cables are inserted into the box through the through holes in the end wall of the base, which is associated with the difficulties of fixing and sealing the cables and the need to use additional materials for this. Another problem of this design of the box is the inability to remove the block splice plates to facilitate the installation of optical cable.

 A known method of sealing the coupling port of an optical cable with the conclusion of the conductors from the armor to the ground. This essence is achieved by the fact that the gaskets are spread out according to the template by a distance equal to the distance between the grooves of the coupling port, the space between the gaskets is filled with a sealing compound, the conductor with gaskets is installed in the port of the lower part of the coupling body so that the gaskets enter the grooves of the coupling port, connect the lower and top of the coupling body. Moreover, gaskets with holes, the number of which is equal to the number of input grounding conductors, are laid on top of each other so that the holes coincide, a grounding conductor is inserted into each hole so that one grounding conductor enters one hole and passes through both gaskets. After that, the gaskets are expanded according to the template to a distance equal to the distance between the grooves of the coupling port, the space between the gaskets is filled with a sealing compound, the ground conductor with gaskets is installed in the port of the lower part of the coupling body so that the gaskets enter the grooves of the coupling port, connect the lower and upper parts of the housing couplings, providing sealing of the optical fiber-optic cable coupling port with the output of grounding conductors from armor to grounding conductors (RU2319989С1, 03.20.2008).

 The disadvantages of the technical solution according to patent RU2319989С1 is the difficulty of tight installation of cable entries, as well as the limited number of cable entries, as they are located in one row at the junction line of the end wall of the housing.

Known housing (for fiber optic assembly), including the upper part of the body and the lower part of the body, the upper and lower gaskets made of helium sealing material, each of these gaskets is inserted into the groove available in the lower and upper parts of the housing, respectively, while said upper and lower gaskets are adapted to isolate an element that can be inserted into said housing. At least one of said gaskets is secured by a clamping device, which is elastically attached to one of said body parts by means of a spring element, while the other part of the body and / or said clamping device has a contour bearing surface. The contour bearing surfaces interact with the helium seal material so that the helium seal material is forced to flow to improve instantaneous sealing of the upper and lower parts of the housing in the seal area provided by the gaskets. The optical cable is clamped between the upper and lower gaskets after closing the housing, i.e. after pressing two parts of the body against each other.

 In patent RU2530787C2, the housing is provided with an edge extending in a direction transverse to the entrance direction of said optical cable. The mentioned edge extends mainly along the bottom of the groove. The lip protrudes from the substantially flat lower surface of said other of said body parts or said fixture. The edge is located mainly in the middle of said gasket in the direction of entry of said element. Said edge has a height (h) which protrudes from the flat bottom of the groove by 1-5 mm, preferably 2-3 mm, or corresponds to 3% -15%, preferably 5% -10% of the maximum height (Hmax) of the gasket. One of said gaskets has at least one recess for introducing an element and a part of the housing or a clamping device corresponding to the other of said gaskets contains a protrusion directed to the first of said gaskets and adjacent to the side wall of said recess. The surface of said first gasket forms a tray, the upper part of which intersects with the side wall of the recess, and the lower part of which is opposite to said protrusion. Another of said gaskets has a recess located in the opposite direction to said recess and having a width (WD) substantially corresponding to the width of the recess (WR). At least one of said gaskets is sandwiched between side holders, each of said side holders has a lower contour corresponding to the contour of the holding protrusions protruding from the bottom of the corresponding part of the housing. Said lower contour of said side holder protrudes from said gasket. Each of said side holders has a recess that is aligned with said recess for inserting the element, said recess for inserting the element is smaller than said recess for the holder. Each of said side holders has a recess that is aligned with said recess for inserting the element, said recess for inserting the element is smaller than said recess for the holder. Said side holders are inserted between the lower holding edges protruding from the bottom of the corresponding part of the housing. The side holders have pins that are inserted into the pin holes provided on said gasket. One of said gaskets has at least one additional recess for inserting an additional element that can be additionally inserted into said housing, said housing accommodates an insert, said insert is adapted to fasten at least one of said elements and has at least one protruding empty cable combined respectively with said at least one additional recess. Said empty cable is fixed in said insert using a film element made in such a way that it can be cut manually (RU2530787C2, 10/10/2014 - prototype).

The disadvantage of the prototype is that the input of cables into the housing is through passages located in one row on the junction of the end walls of the lower and upper parts of the box and thus the number of cables inserted into the housing is limited.

 The technical result of the invention presented in this description is to increase the convenience of installation work by expanding the functionality of the housing and providing the input of optical cables into the housing along two interface lines, increasing the number of cable entries and creating the possibility of diversity of cable entries for trunk and subscriber optical cables along different interface lines.

 The technical result is obtained by the housing of the device for mounting and distribution of optical cables, including a base with side and end walls, a cover with sides, an opening between one of the end walls of the base and an adjacent side of the cover, the body having means for fastening and fixing the cover to the base of the housing , a cavity is made in the housing for accommodating a mounting panel attached thereto to the base, which is equipped with means for attaching it to the external load-bearing structures, the housing being equipped with a seal an integral unit located in the aperture of the end wall of the base, on the lines of the junction of which with the end wall of the base and the side of the lid, passages for cable entry are made.

 The surface of the abutting perimeter of the sealing block is covered with elastic sealing material.

 At least one of the cable passages has a cylindrical shape.

 At least one cable passage is in the form of a groove.

 The mounting plate is connected to the sealing block.

 The base and cover are connected by a hinge loop.

 The hinge loop is detachable.

 The hinge loop is made with a device for fixing the open position of the cover.

 When closed, the cover is fixed to the base with latches with handles and spring loops.

 When closed, the latch handles are fixed with screws.

 Based on the elements of fastening to the walls.

 Based on the elements of fastening to the posts.

In FIG. 1 shows the housing of the device for mounting and distribution of optical cables on the example of the housing of the coupling-cross.

In FIG. 2 is a view of the housing from the front side.

In FIG. 3 - sealing block.

In FIG. 4 is an end view of the housing with a sealing block.

In FIG. 5 - coupling body with an open cover.

In FIG. 6 - mounting panel of the housing.

In FIG. 7 - mounting panel of the housing with the cartridge installed.

In FIG. 8 is a view of the housing from the bottom of the base of the housing.

 The housing of the device for mounting and distribution of optical cables is made of impact-resistant plastic and includes a base 1 (Fig. 1), a cover 2 that can be locked on the base with spring clips 3, which are fixed on the base and in the closed state of the cover can be additionally fixed to the cover 2 with screws 4. In the end wall 5 (Fig. 2) of the base 1 there is an opening 6 in which the sealing block 7 is placed (Fig. 1). In the assembled state, the sealing block 7 is part of the end wall 5 of the base 1, through which optical cables are inserted into the cross-coupling through the holes formed by the said parts of the housing along two interface lines through the cylindrical holes 8 at the joint of the sealing block 7 with the end wall 5 of the base 1, and through the grooves 9 located at the junction of the sealing block 7 and the cover 2. Cylindrical holes 8 are intended for input (output) into the body of the cross-coupling of the main optical cables, and the grooves 9 are intended for To withdraw (input) several subscriber cables (drop cables) from the coupling.

 The sealing of cable entries is provided by gaskets made of elastic material. The first gasket 10 (Figure 4) is located in the groove of the cover 2 of the housing. The second gasket 11 is located on the abutting surface of the end wall 5 of the base 1 of the housing. The third gasket 12 fits around the entire perimeter of the abutting surface of the sealing block 7. The gaskets are attached to the surfaces of the cover, base and sealing block by any known method. For example, a sealing material in the form of a gel can be applied to the aforementioned parts of the cross-coupling body during the molding of plastic parts and thereby be rigidly attached to their surfaces. Gaskets made of elastic gel material in their basic properties are similar to silicone or rubber, but differ in a softer jelly-like consistency and the effect of "sticking" upon contact with any surface, which provides good sealing properties. In another embodiment, the gaskets can be made as separate elements and attached to the said parts of the housing mechanically.

 On the basis of 1 housing (Fig. 5) made brackets 13 with curly holes in them for mounting the housing to the walls. In the inner cavity of the housing is placed the mounting panel 14 (Fig. 5), which is fixed on the base 1 using screws 15.

 Mounting plate 14 is a circuit board, both sides of which are used to accommodate structural elements for mounting optical cables, distributing and switching optical fibers. On the side of the mounting panel on the side of the cover are: a patch panel 16 (Fig. 5) for installing optical connectors (not shown), a lodgement 17 for installing a splitter, a lodgement 18 for splices of optical fibers and protrusions 19 for securing subscriber cables. On the side of the mounting panel facing the bottom of the base 1, there are clamps 20 (Fig. 6) for attaching the sheaths of the main distribution cables, as well as nodes 21 for attaching the central power elements of the cables. The mounting panel 14 also has sides 22 with loops 23 located on them (FIG. 6) for fixing optical modules (not shown). The mounting panel 14 also has racks 24 for installing and fixing the cartridge 25 (Fig. 7) with a cover 26, which are designed to store stocks and splices of optical fibers.

 From the front side of the housing on the mounting panel 14 (Fig. 5), the sealing block 7 (Fig. 3) is fixed using the protrusions 27 located on the side of the sealing block 7. A feature of the design of the cross-coupling housing is the ability to repeatedly remove the sealing block 7 with the attached mounting plate 14 of the coupling housing for ease of cable installation and maintenance of the cross-coupling during operation.

 In the described embodiment of the housing, the cover 2 is connected to the base 1 by a hinge loop 28 (Fig. 5). Depending on the design of the hinge, the lid may be removable and have means for fixing the open position of the lid 2, preventing its spontaneous closing under the weight of its own weight. In other embodiments, the cover may be laid on and mounted on the base during assembly of the housing.

 Optical cables are introduced through the holes formed by the said parts of the housing along two lines of the joint: along the joint line 29 (Fig. 4) through the cylindrical holes 8 at the joint of the sealing block 7 with the end wall 5 of the base 1, and along the joint line 30 through the grooves 9 (Fig. .3) located at the junction of the sealing block 7 and the cover 2.

 The case is fastened to the posts using a metal mounting tape threaded through the channels 31, passing under the holders 32 from the bottom of the base 1 of the case. In other embodiments of the housing, the housing can be attached to walls or poles by other known means.

11. The brackets 13 of the base with holes in them and holders 32 are elements of the housing to the external load-bearing elements of buildings or poles.

 The body of the device operates as follows. The housing is mounted on the wall of the building by hanging the base 1 on the fasteners in the wall by inserting 13 fasteners fastened in the wall into the holes of the brackets 13. Other means are used to hang the base on the pole.

 When servicing and installing communication lines, open the cover 2 by transferring the handles of the latches 3 (Figure 1) to the position "from the housing". Next, loosen the screws 15 (Figure 5), fixing the mounting panel 14 on the base 1 of the housing. The mounting panel 14 with the sealing unit 7 attached to it is removed from the housing for mounting the distribution cable. The installation of the main distribution optical cables on the mounting panel 14 removed from the housing is carried out in convenient conditions on the mounting table or in the interior of a special vehicle. At the end of the cable installation, the mounted mounting plate 14 with the sealing block 7 is placed in the internal cavity of the base 1 of the housing and fixed to it with screws 15, while the sealing block 7 is installed in the opening 6 on the end wall 5 of the base 1 of the housing. Optical adapters (not shown) installed in the sockets of the patch panel 16 (not shown) are connected to the plugs of the optical connectors of the subscriber drop cables. The shells of drop cables are placed in the grooves 9 of the sealing block 7 and fix them with plastic ties to the protrusions 19 of the mounting panel 14. Upon completion of connecting the subscriber cables, the cover 2 is hermetically closed and fixed on the base 1 of the housing by moving the handle of the latches 3 to the “to corps ".

 After installation, the mounted unit (mounting plate 14 and sealing block 7) is placed in the internal cavity of the base 1 and after closing the cover 2, the tightness of the coupling housing, including cable entries, is ensured.

 An advantage of the described construction is that installation work can be carried out without removing the housing from the wall or pillar. To carry out installation work, it is enough to remove the mounting panel 14 with the sealing block 7 attached to it from the casing of the cross-coupling. Installation can be carried out on both sides of the mounting plate, thereby effectively using both surfaces of the mounting plate 14.

Claims (7)

1. The housing of the device for mounting and distribution of optical cables, including a base with side and end walls, a cover with sides, an opening between one of the end walls of the base and an adjacent side of the cover, the body having means for fastening and fixing the cover to the base of the housing, a cavity is made in the housing to accommodate a mounting panel attached thereto to a base having means for attaching it to external load-bearing structures, the housing being equipped with a sealing block located at the end face of the base wall, in the sealing block there are made cylindrical openings and many grooves, on the lines of the junction of which with the end wall of the base and the edge of the lid there are passages for cable entry, characterized in that the cylindrical openings of the end wall and the sealing block are mirror-shaped with respect to each other, and the grooves are located on the opposite side from the cylindrical holes of the sealing block, while the cylindrical holes are formed by half-cylindrical grooves of the sealing block ka and semi-cylindrical grooves of the gasket, the grooves are formed by the recesses of the upper part of the sealing block, as a result of the cylindrical holes and grooves are formed by the sealing block and gaskets. 2. The housing of the device according to claim 1, characterized in that the surface of the abutting perimeter of the sealing block is covered with elastic sealing material. 3. The housing of the device according to claim 1, characterized in that the base and the cover of the housing of the device are connected by a detachable hinge loop. 4. The housing of the device according to claim 1, characterized in that the mounting panel is connected to the sealing block. 5. The housing of the device according to claim 3, characterized in that the hinge loop is made with a device for fixing the open position of the cover. 6. The housing of the device according to claim 1, characterized in that in the closed state the lid is fixed on the base using latches with handles and spring loops. 7. The housing of the device according to claim 6, characterized in that in the closed state the latch handles are fixed with screws.

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