BR102018005815A2 - OPTICAL TERMINATION BOX - Google Patents

Abstract

the housing comprises a base (10) and a lid (20) hinged together and having peripheral walls (12, 22) with front and rear edges (12a, 22a), respectively, which form a sealing maze with the lid (20). ) closed. side openings (13) in the base (10) house sealing bushings (14) for multi-fiber optical cables (co). a tray (30) carrying fiber optic accommodation and splicing elements on a rear face (31) and connecting elements on an anterior face (32) is hinged to the base (10). side cradles (33) and sealing elements (50) are provided on the front face (32) of the tray (30) for receiving and fitting end cables (ct). the lid (20) has a rear edge (22a) seated against a sealing member (50) and another cooperating rear edge (22a) overlapping with a front edge (33a) of a side cradle (33) on which it is provided. an anchor element (60) is engaged by frictionally engaging and anchoring respective end cables (ct).

Description

“OPTICAL TERMINATION BOX

Field of the invention [001] The present invention relates to an optical cable termination and / or derivation (splice) box, normally called “termination box, to be normally applied to optical fiber networks called FTTH (“ fiber to the home), to protect an optical splice between a fiber optic cable of a multi-fiber distribution cable received in the box and multiple optical termination cables (drop cable), usually in the form of a compact cable (low friction), and / or optical splices by fusing between one or more optical fibers of the distribution cable and a respective optical derivation cable (multifiber optical cable).

[002] The optical termination box of the present invention is of the type usually applied in overhead installations, being fixed on the strand or on the facade of a building presenting a base, a hinged cover to the base, sealing elements acting between the base and the cover and between the base and the different distribution, derivation and termination cables (or approach - drop cables), and also, inside the box, elements for accommodation of optical adapters for connectorized outputs and eventual splice fusion splices and in derivation.

Background of the invention [003] Fiber optic networks require the provision of splicing points and end points, for user activation, which are protected by termination and / or distribution boxes generally installed externally and overhead.

[004] At a seam point, for example, one or more

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2/16 fibers of a distribution cable, received in a termination / distribution box, are spliced, by fusion, to the respective fibers of a branch cable that leaves the said box to reach a new splice point or a termination point user activation.

[005] However, at a user activation point, one of the fibers of the optical bypass cable, which reaches an overhead termination box, can be subjected to a splitter to provide termination cables addressed to end users of the network. The fibers of the optical bypass cable, which reach a termination box, but which are not connected to a respective termination cable (drop cable), can pass through the box, unchanged or spliced to a new cable extension, to proceed in towards a new splicing or user activation point.

[006] These termination boxes must be constructed to receive at least one multi-fiber distribution cable, and to release the output of one or more branch cables and / or a compact termination cable (drop), requiring internal accommodation for amendments by splitter or cable fusion fusion.

[007] A problem presented by these boxes results from the risk of damage to the compact terminal cables already installed in them, during the maintenance operations of the optical network, when the installer needs to move the internal elements of fiber accommodation in the box, causing, with frequency, improper folding of the compact termination optical cables and even damaging the connection adapters of these termination cables, which need to be disconnected from the adapters for the installer to have

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3/16 access to the fiber fusion areas. To reduce these risks, termination boxes have been proposed with the internal elements of accommodation of the compact termination cables physically separated from the internal elements of accommodation of the multi-fiber branch cables.

[008] This well-known physical separation solution for cable accommodation elements has been applied due to the fact that installers of multi-fiber bypass cables are responsible for the fiber fusion operations, while compact termination cable installers are specialized in connection operations of these cables to the respective adapters provided inside the box and connected to the splitter. With the physical separation of the said accommodation elements, each installer has their respective work area separate from that of the other, reducing the possibility of one team damaging the work of the other.

[009] Despite minimizing the risks of damage mentioned above and reducing the number of costly calls / calls for maintenance of the network of multi-fiber bypass cables or compact termination cables, this well-known solution of physical separation of cable accommodation elements it is complex and costly.

[010] Another drawback of these known termination boxes results from the positioning of the outputs for the compact termination cables, which do not prioritize the ease of installation of these cables in a way close to the rope, to avoid interference with the inconveniences found on streets and roads .

[011] Yet another shortcoming of the known transfer boxes is related to the sealing solutions, in a

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4/16 only stage and not always with an adequate construction, economically advantageous, of elastic accommodation of the sealing rings (grommets) in the entrances and exits of the cables, failing to provide a desired seal against the entry of humidity and insects inside the box or using buildings.

[012] When an external and aerial termination box receives the installation of cables arranged in the same direction as the wire rope, there is a risk of water running into the box. To avoid this risk, installers are instructed to leave a small surplus of cable that is configured in a U shape, to form a drip pan just before entering the box. However, this measure is not always adopted.

[013] The absence of means of draining moisture that eventually penetrates through the first stage also reduces the degree of reliability of these well-known sealing solutions in one stage. These facts indicate the desirability of improving the watertightness level of these termination boxes of external aerial installation and subjected to bad weather that can present a strong intensity.

[014] The known termination boxes present yet another drawback that results from the fact that they allow the cover to be closed even if the installer has not anchored the compact terminal cable correctly (drop cable), allowing, in this case, the compact cable and, consequently, the data transmission network is susceptible to undesirable movements and even unacceptable by the current rules.

[015] Examples of termination boxes of the type considered here can be found in US 6,226,434

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5/16 and US 9.310579.

Summary of the invention [016] In view of the aspects discussed above, the present invention aims to provide a termination box, for optical access networks, overhead installation and that is of simple and robust construction, with reduced number of parts, easy and safe handling of the fiber splice elements by the respective team of installers, without interference in the termination cable connection elements to be handled by another team of installers.

[017] The present invention also has the objective of providing an optical termination box for aerial installation that, in addition to presenting a simple and safe construction, is endowed with a high degree of tightness that does not depend on the special care of the installer and provided with a sealing system double, acting on the box, the distribution cables, the derivation cables and the termination cables and allowing to contain large jets of water in a first stage and also droplets and small insects in a second stage, with drainage between the two stages.

[018] Yet another objective of the invention is to provide an optical termination box for aerial installation that is not only simple and robust in construction, but that guarantees the correct anchoring of the termination cables (drop cables) when closing the cover .

[019] According to a first aspect of the invention, the optical termination box comprises: a base having a bottom wall and peripheral walls that define at least one front edge and side openings for passage of

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6/16 optical fiber cables; a lid hinged to the base and having a top wall and peripheral walls defining at least one rear edge, being movable between a closed position, seated against the base, and an open position; and a tray hinged at the base and having a rear face and an anterior and movable face between a first position with its posterior face seated on the base and with the anterior face exposed to the installer and a second position in which it exposes the posterior face in a horizontal position to the installer.

[020] According to a second aspect of the same invention, the peripheral walls of the base have multiple front edges that define, between two, two, a drainage channel, with two peripheral walls having their front edges and the respective channel drainage system following the internal contour of the side openings, each side opening housing and retaining an elastomeric sealing bush, closing the cross section of each side opening not occupied by a multifiber optical cable passing through said side opening, the cover having its peripheral walls provided with multiple posterior edges, and in the closed position of the lid the anterior and posterior edges of the base and the lid, in the regions devoid of the lateral openings, are fitted together, forming a sealing maze.

[021] According to a third aspect of the invention, the tray also incorporates, in the region of the side openings and on its front face: a pair of side cradles, each taking the shape of a channel with its anterior edges provided with recesses, each side cradle being inferiorly provided with rear projecting edges, at least one of the

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7/16 which have cooperating extensions, in a sealing overlap, with respective sealing bushings; and a pair of lateral sealing elements, in elastomer, with its front edge provided with grooves aligned with the recesses of the anterior edges of the lateral cradles, said grooves and recesses aligned with each other receiving the tight fit of the respective terminal cables, being an extension of a rear edge of the lid seated against a respective sealing element and an extension of another rear edge of the cooperating lid, in overlap, with an anterior edge of a respective side cradle.

[022] According to a fourth aspect of the invention, the termination box further comprises an anchoring element fitted and retained within each side cradle and having a front face provided with anchoring cutouts aligned with the recesses of the respective side cradle and in which the respective terminal cables are attached and anchored, by pressure / interference, being an extension of at least one of the rear edges of the cover, when closed, seated against a respective terminal cable, forcing it into the respective anchoring cutout.

[023] The different aspects of the invention allow fusion or splitter splicing operations of the optical fibers to be carried out with the tray open and horizontal, without risk of undue bending or undesirable manipulations in the terminal cable connections provided on the front face of the tray . In addition to this improvement in the safety of operations in the termination box by different teams, the new construction guarantees a reliable seal, regardless of operator interference, due to the formation

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8/16 of labyrinth between the facing edges of the cover and the base and also by the provision of bushings and sealing elements, acting in the passage openings of the multi-fiber optical cables and the compact terminal cables, respectively, being these sealing means operatively associated with an intermediate drain trough. The new solution also allows the box cover to be closed only with the existing terminal cables properly seated on the anchoring elements.

Brief description of the drawings [024] In the following, the invention will be described based on the attached drawings, given as an example of an embodiment of the invention and in which:

[025] Figure 1 represents a rear perspective view of the termination box of the invention, with its lid in a closed condition on the base and with its visible side wall provided with three openings, each carrying a sealing bushing, for tight and sealed passage of a corresponding distribution or bypass cable;

[026] Figure 2 represents an anterior perspective view of the box in Figure 1, with the lid in open condition, but with the inner tray articulated to the base and still seated inside the latter and having its front face carrying two sets of eight retractable adapters, for connecting termination cables (drop cables);

[027] Figure 3 represents an anterior perspective view of the termination box with its base in a vertical suspension position on a wire rope, with its lid also in a vertical and open position and the inner tray stabilized in an open horizontal position, with your face

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9/16 posterior facing upwards, to expose, to the installer, the splitter of a termination cable, the elements of accommodation of the splice of distribution / bypass cables and elements of accommodation of fiber extensions;

[028] Figure 4 represents an anterior perspective view of the base, showing, in an exploded manner, the sealing plugs for the distribution and branch cables, a lock to retain the cover in the closed position and a pair of handles. corded suspension;

[029] Figure 5 represents an anterior perspective view of the inner tray, exploded showing a pig tail reserve cover, a pair of side sealing elements on the inner tray, a pair of cable anchor elements. compact terminations plus a sealing plate carrying two sets of retractable adapter holders;

[030] Figure 6 represents a top view of the set of figure 3, illustrating the rear face of the inner tray;

[031] Figure 7 represents a plan view of the interior of the base, the lid and the lock in the condition of an open box without the internal tray;

[032] Figure 8 represents a cross-sectional view of the termination box in the closed condition and devoid of the internal tray, said cut having been taken in the direction of the arrow VIII-VIII in figure 7;

[033] Figure 9 represents a view similar to figure 7, but including the internal tray in the closed condition and having its retractable adapters connected to the respective compact termination cables; and

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10/16 [034] Figure 10 represents a partial longitudinal sectional view of the termination box in closed condition and illustrating the sealing means acting on a distribution or bypass cable and also the anchoring means acting on a termination cable compact.

Description of the invention [035] As illustrated in the drawings and mentioned above, the optical termination box in question, usually installed overhead on a non-illustrated strand, comprises a base 10 and a cover 20, both in non-conductive electrical material, with the base 10 incorporating, in one piece, a bottom wall 11 and peripheral walls 12 and which define at least one front edge 12a, preferably multiple front edges 12a, which define, two by two, a drainage channel 12b. Two of the peripheral walls 12 are provided with side openings 13 for the passage of multi-fiber CO optical cables, which can be defined by a multi-fiber distribution cable or by one or more multi-fiber branch cables.

[036] In the preferred construction in which the peripheral walls 12 of the base 10 have multiple anterior edges 12a, the latter and the respective drainage channel 12b follow the internal contour of the side openings 13, each housing and retaining a sealing bush 14 , in elastomer, closing the cross section of each side opening 13, not occupied by a multifiber CO optical cable, passing through said side opening 13.

[037] According to the construction illustrated, each sealing bush 14 is lateral and subsequently provided with grooves 14a in each of which a respective extension is fitted.

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11/16 anterior edge 12a of the base 10 that follows the contour of the respective side opening 13 of the base 10. With this, each sealing bush 14 is solidly retained on the anterior edges 12a of the base 10, providing two distinct sealing regions. In addition, each sealing bush 14 has a transverse groove 14b, open midway into the extension of the drainage channel 12b that follows the contour of the respective side opening 13 of the base 10.

[038] The sealing bushings 14, provided in side openings 13 without a respective multi-fiber optical cable CO, have a substantially solid construction provided only with the said transverse slot 14b. However, the sealing bushings 14 provided in side openings 13 traversed by the respective multi-fiber optical cable CO, are provided with a longitudinal through hole 14c, crossing the transverse slot 14b and with at least a median portion of its length having a diameter smaller than that of the respective multi-fiber CO cable to be disposed through said longitudinal through hole 14c.

[039] With that, any moisture that penetrates between the longitudinal hole through 14c and the optical fiber multifiber CO, is conducted, through the transverse slot 14b, to the drainage channel 12b.

[040] The lid 20 has a top wall 21 and peripheral walls 22 defining at least one and preferably multiple rear edges 22a, which define, in pairs, a lid rail 22b, the lid 20 being hinged to the base 10, preferably on a peripheral wall 12 of the latter, devoid of side openings 13, to be movable between an open position and a

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12/16 closed position, locked in the base 10 and in which the front and rear edges 12, 22a, of the base 10 and the cover 20, in the regions devoid of the side openings 13, are seated together and, preferably, fit together forming a fence maze.

[041] The optical termination box further comprises a tray 30 hinged on the base 10 and having a rear face 31 and an anterior face 32 and displaceable between a first position with its rear face 31 seated on the base 10, above the side openings 13 and exposing the front face 32 to the installer and a second position in which exposes the back face 31 to the installer.

[042] Tray 30 has its rear face 31 carrying AF fiber accommodation means, EF fiber splice means, an SF fiber splitter and C connectors receiving FO optical fibers divided from a fiber derived from a cable optical fiber CO. The front face 32 of tray 30 carries output adapters AS to each receive the fitting of a respective CT end cable.

[043] Tray 30 also incorporates, in the region of the side openings 13 and on its front face 32, a pair of side cradles 33, each taking the form of a channel with its anterior edges 33a provided with recesses 33b receiving the tight fit respective CT terminal cables to be projected out of the optical termination box. In the illustrated construction, each side cradle 33 takes the form of a channel with a U-shaped cross section, with its front edges 33a parallel to each other and provided with recesses 33b.

[044] With the provision of a single tray 30 hinged to the

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13/16 base 10, it is possible for an installation team to make fusion splices and even splits of an optical fiber using the back face 31 of tray 30 as a kind of horizontal table, when in its second position illustrated in figure 3. In this case, the splicing team or optical divisions can simply move the tray 30 to its second horizontal position and work on the rear face 31, without risk of damaging the connections of the CT terminal cables arranged on the front face 32 of the tray 30.

[045] As shown in figure 3, the bottom wall 11 of the base 10 is usually arranged on a vertical mounting plane to remain suspended on a wire rope (not shown) by means of suspension hooks 15, fixed to the base 10 and which they can take different constructions, like the one illustrated by example.

[046] The tray 30 is preferably hinged on a peripheral wall 12 of the base 10, in a lower region of the latter, devoid of the side openings 13, to be angularly displaced between its first position and its second position, in which it remains stabilized with its posterior face 31 facing up, in horizontal position. [047] The tray 30, to be stabilized in its second position, is partially seated against a region of peripheral wall 22 of the lid 20, adjacent to its hinge to the base 10, the lid 20 being in an open position coplanar to the base 10, as shown in figure 3.

[048] In the exemplary configuration illustrated, tray 30 receives an anterior sealing plate 35, carrying AS output adapters, on which it is

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14/16 a complementary cover 36 is mounted to cover a reserve region of fiber optic extensions derived from the SF fiber splitter (pig tails) and connected to the AS output adapters.

[049] In the illustrated construction, the base 10 incorporates, internally, a locking tongue 16, elastically deformable from an operating position, in which it locks the tray 30 in its first position seated on the base 10, to an inoperative position, in which it releases the angular displacement of tray 30 from the first position to the second position.

[050] In a particular construction of the invention, the lid 20 is locked on the base 10 by a latch 40 loaded by a peripheral wall 12 of the base 10, opposite that of the hinge of the lid 20 to the base 10 and movable between an open position and a closed position, in which it locks together, facing peripheral walls 12 of the base 10 and the lid 20. It should be understood that the latch 40 can also be mounted articulated to a peripheral wall 22 of the lid 20, to act against the base 10, when closing the optical termination box.

[051] Regarding the proper sealing of the optical termination box, each side cradle 33 is inferiorly provided with projecting rear edges 33c, at least one of which having cooperating extensions, in sealing overlap, with respective sealing bushings 14, as illustrated in figure 10, providing axial retention means for said bushings and a baffle to hinder the penetration of water jets into the interior of the box through the junction region between the sealing bushings 14 and the rear face 31 of tray 30.

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15/16 [052] The front face 32 of tray 30 also carries, in the region of the side openings 13 of the base 10, a pair of sealing elements 50, in elastomer, with its front edge 51 provided with slots 52 aligned with the recesses 33b of the front edges 33a of the side cradles 33, said grooves 52 and recesses 33b, being aligned with each other to receive the tight fit of the respective CT end cables, being an extension of a rear edge 22a of the cap 20 seated against and compressing a respective element seal 50 around a respective CT end cable and an extension of another rear edge 22a of the cooperating cover 20, in overlap, with an anterior edge 33a of a respective side cradle 33, as shown in figure 10.

[053] In one of its constructive forms, the optical termination box further comprises an anchoring element 60 fitted and retained within each side cradle 33 and having an anterior face 61 provided with anchoring cutouts 62 aligned with the recesses 33b of the respective side cradle 33 and to which the respective CT end cables are attached and anchored by pressure.

[054] With this construction, when the lid 20 is closed, an extension of at least one of its posterior edges 22a is seated against a respective CT end cable, forcing it into the respective anchoring cutout 62, as shown in figures 1 and 3.

[055] The anchoring of the CT terminal cables is ensured by closing the lid 20 due to the fact that one of its posterior edges 22a extends from the lid 20 in addition to cooperating, in overlap, with an anterior edge 33a of a respective side cradle 33, providing sealing, said force

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16/16 CT end cable into the respective anchoring cutout 62.

[056] Although only one configuration of the optical termination box in question has been illustrated here, it should be understood that changes in the shape and arrangement of components can be made, without departing from the constructive concept defined in the claims accompanying the present report.

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Claims (16)

1. Optical termination box, characterized by the fact that it comprises: - a base (10) having a bottom wall (11) and peripheral walls (12) that define at least one front edge (12a) and side openings (13) for the passage of optical fiber cables (CO); - a lid (20) having a top wall (21) and peripheral walls (22) defining at least one rear edge (22a), the lid (20) being hinged to the base (10) to be moved between a closed position, locked on the base (10) and with its rear edge (22a) seated against the front edge (12a) of the base (10) and an open position; and - a tray (30) hinged at the base (10) and having a rear face (31) carrying fiber accommodation means (AF), fiber splice means (EF), a fiber splitter (SF) and connectors (C) receiving optical fibers (FO) divided from a fiber derived from a multi-fiber optical cable (CO), and an anterior face (32) carrying output adapters (AS) to each receive the fitting of a respective terminal cable (CT), said tray (30) being movable between a first position with its posterior face (31) seated on the base (10), above the side openings (13) and with its anterior face (32) exposed to the installer, and a second position in which it exposes its posterior face (31) to the installer. 2. Box, according to claim 1, characterized by the fact that the tray (30) incorporates a pair of side cradles (33), each taking the form of a channel with a U-shaped cross section with its anterior edges ( 33a) Petition 870180023476, of 03/23/2018, p. 26/43 2/7 parallel to each other and provided with recesses (33b) configured to each receive the fitting of a terminal cable (CT) to be projected out of the optical termination box. 3. Optical termination box, characterized by the fact that it comprises: - a base (10) having a bottom wall (11) and peripheral walls (12), two of which are provided with lateral openings (13) for the passage of multifiber optical cables (CO), said peripheral walls (12) having multiple anterior edges (12a) that define, two by two, a drainage channel (12b), the two peripheral walls (12) having their anterior edges (12a) and the respective drainage channel (12b) following the internal contour of the side openings (13), each side opening (13) housing and retaining an elastomeric sealing bush (14), closing the cross section of each side opening (13) not occupied by a passing multi-fiber (CO) optical cable through said lateral opening (13); - a lid (20) having a top wall (21) and peripheral walls (22) provided with multiple rear edges (22a) defining, between two, two, a lid rail (22b), the lid (20 ) hinged on a peripheral wall (12) of the base (10), devoid of side openings (13), to be displaced between an open position and a closed position, locked on the base (10) and in which the front and rear edges ( 12a, 22a) of the base (10) and the cover (20), in the regions devoid of the lateral openings (13), are fitted together, forming a sealing maze; and - a tray (30) hinged at the base (10) and having a rear face (31) and an anterior face (32) and movable between Petition 870180023476, of 03/23/2018, p. 27/43 3/7 a first position with its posterior face (31) seated on the base (10) and exposing the anterior face (32) to the installer and a second position in which it exposes the posterior face (31) to the installer, said tray (30) incorporating, in the region of the lateral openings (13) and on its anterior face (32): a pair of lateral cradles (33), each taking the form of a channel with its anterior edges (33a) provided with recesses (33b) , each side cradle (33) being inferiorly provided with rear edges (33c) projecting, at least one of which having cooperating extensions, in sealing overlap, with respective sealing bushings (14); and a pair of elastomeric side sealing elements (50), with its front edge (51) provided with slots (52) aligned with the recesses (33b) of the front edges (33a) of the side cradles (33), said slots (52) and recesses (33b) aligned with each other, fitting the respective terminal cables (CT), being an extension of a rear edge (22a) of the cover (20) seated against a respective sealing element (50) and a extension of another rear edge of the cooperating lid (20), in overlap, with an anterior edge (33a) of a respective side cradle (33). 4. Housing, according to claim 3, characterized in that each sealing bush (14) is lateral and later provided with grooves (14a) in each of which a respective front edge extension (12a) of the base is fitted (10) that follows the contour of the respective side opening (13) of the base (10). 5. Box, according to claim 4, characterized by the fact that each sealing bush (14) has a transverse slot (14b), medium and open to the interior of the Petition 870180023476, of 03/23/2018, p. 28/43 4/7 extension of the drainage channel (12b) that follows the contour of the respective lateral opening (13) of the base (10). 6. Housing according to any one of claims 3 to 5, characterized in that the sealing bushings (14), provided in lateral openings (13) crossed by the respective multi-fiber optical cable (CO), are provided with a longitudinal hole through (14c) with at least a median portion of its length having a diameter smaller than that of the respective multifiber cable (CO). 7. Optical termination box, characterized by the fact that it comprises: - a base (10) having a bottom wall (11) and peripheral walls (12), two of which are provided with lateral openings (13) for the passage of optical fiber cables (CO); - a lid (20) having a top wall (21) and peripheral walls (22) provided with multiple posterior edges (22a), the lid (20) being hinged on a peripheral wall (12) of the base (10), devoid of the side openings (13), to be movable between an open position and a closed position, locked at the base (10); and - a tray (30) hinged at the base (10) and having a rear face (31) and an anterior face (32) and movable between a first position with its rear face (31) seated on the base (10) and exposing the face anterior (32) to the installer and a second position in which the rear face (31) is exposed to the installer, said tray (30), also incorporating, in the region of the side openings (13) and on its anterior face (32), a pair of side cradles (33), each taking the shape of a channel with its front edges (33a) provided with recesses (33b) receiving the tight fit of the respective cables Petition 870180023476, of 03/23/2018, p. 29/43 5/7 terminals (CT); - an anchoring element (60) fitted and retained inside each side cradle (33) and having an anterior face (61) provided with anchoring cutouts (62) aligned with the recesses (33b) of the respective side cradle (33) and in which the respective terminal cables (CT) are attached and anchored by friction, being an extension of at least one of the rear edges (22a) of the cover (20), when closed, seated against a respective terminal cable (CT) , forcing it into the respective anchoring cutout (62). 8. Box, according to claim 7, characterized by the fact that the front face (32) of the tray (30) also incorporates a pair of elastomeric sealing elements (50), with its front edge (51) provided with slots (52) aligned with the recesses (33b) of the anterior edges (33a) of the side cradles (33), said slots (52) and recesses (33b) receiving the tight fit of the respective terminal cables (CT), one being extension of a rear edge (22a) of the cover (20) seated against and compressing a respective sealing element (50) around a respective end cable (CT) and being an extension of another rear edge (22a) of the cover (20 ) cooperating, in overlap, with an anterior edge (33a) of a respective side cradle (33) and forcing said terminal cable (CT) into the respective anchoring cutout (62). 9. Box according to any one of claims 7 and 8, characterized in that the peripheral walls (12) of the base (10) have multiple front edges (12a) that define, two by two, a gutter between them drainage (12b), with the two peripheral walls (12) having their edges Petition 870180023476, of 03/23/2018, p. 30/43 Previous 6/7 (12a) and the respective drainage channel (12b) following the internal contour of the side openings (13), each side opening (13) housing and retaining an elastomeric sealing bush (14), closing the cross section each side opening (13) not occupied by a multi-fiber optical cable (CO) passing through said side opening (13). 10. Box, according to claim 9, characterized by the fact that the front and rear edges (12a, 22a) of the base (10) and the cover (20), in the regions devoid of the side openings (13), are fitted between forming a sealing maze. 11. Box according to any one of claims 9 or 10, characterized by the fact that each side cradle (33) is inferiorly provided with rear edges (33c) projecting, at least one of which has a cooperating extension, in a sealing overlap, with respective sealing bushings (14). 12. Box according to any one of claims 7 to 11, characterized by the fact that the rear face (32) of the tray (30) carries fiber accommodation means (AF), fiber splice means (EF), a fiber splitter (SF) and connectors ( C) receiving optical fibers (FO) divided from a fiber derived from a multi-fiber optical cable (CO) and the front face (31) loading output adapters (AS) to each receive the fitting of a respective terminal cable ( CT). 13. Box according to any one of claims 1 to 12 and having the bottom wall (11) of its base (10) arranged in a vertical assembly plane, characterized in that the tray (30) is hinged in a peripheral wall (12) Petition 870180023476, of 03/23/2018, p. 31/43 7/7 of the base (10), in a lower region of the latter, devoid of the lateral openings (13), to be angularly displaced between its first position and its second position in which it remains stabilized with its posterior face (32) facing upwards , in horizontal positioning. 14. Box, according to claim 13, characterized in that the tray (30) is stabilized in its second position in which it is partially seated against a region of peripheral wall (22) of the cover (20), adjacent to its articulation to the base (10), the lid (20) being in an open position coplanar to the base (10). 15. Box according to any one of claims 1 to 14, characterized by the fact that the base (10) internally incorporates a locking tongue (16), elastically deformable from an operating position, in which it locks the tray (30) in its first position seated on the base (10), to an inoperative position, in which it releases the angular displacement of the tray (30) from the first position to the second position. 16. Box according to any one of claims 1 to 15, characterized in that the cover (20) is locked on the base (10) by a lock (40) carried by a peripheral wall (12, 22) of one of the base parts (10) and cover (20), opposite to that of articulation of the cover (20) to the base (10) and displaceable between an open position and a closed position, in which it locks together, facing each other, peripheral walls (12, 22) of the base (10) and the cover (20) .