WO2019178664A1

WO2019178664A1 - Optical termination box

Info

Publication number: WO2019178664A1
Application number: PCT/BR2019/050098
Authority: WO
Inventors: Thiago Deconto Vieira; Michael Kulczynskyj; Robson Diego Verbiski DOS SANTOS; Sergio Roberto Scarpin; Renato Flávio CRUZ; Marcos Guido SABINO
Original assignee: Furukawa Electric Latam S.A.
Priority date: 2018-03-23
Filing date: 2019-03-22
Publication date: 2019-09-26
Also published as: MA51497A1; AR114598A1; MA51497B2; MX2020009927A; BR102018005815A2; CO2020011867A2

Abstract

The box comprises a base (10) hinged to a lid (20) and has outer walls (12, 22) with front and rear edges (12a, 22a), which form a sealing labyrinth. Lateral openings (13) in the base (10) house sealing bushings (14) for optical cables (CO). A tray (30), bearing optical fibre accommodating and adjusting elements on a rear side (31) and connection elements on a front side (32), is hinged to the base (10). Lateral troughs (33) and sealing elements (50), on the front side (32) of the tray (30), accommodate terminal cables (CT). The lid (20) has a rear edge (22a) laid against a sealing element (50) and another rear edge (22a) that engages with a front edge (33a) of a lateral trough (33) into which an anchoring element (60) is fitted, accommodating terminal cables (CT).

Description

"OPTICAL TERMINATION BOX"

Field of the invention

[001] The present invention relates to an optical cable termination and / or splice box, commonly referred to as a "termination box", to be commonly applied to fiber-optic networks called FTTH ("fiber to the home ") to protect an optical splitter between a fiber optic from a boxed multi-fiber distribution cable and multiple optical drop cables, usually in the form of a compact cable (" low friction "), and / or optical fusion splices between one or more distribution cable optical fibers and a respective optical branch cable (multi-fiber optical cable).

[002] The optical termination box of the present invention is of the type usually applied in overhead installations, being fixed to the building's strand or facade having a base, a hinged lid to the base, sealing elements acting between the base and the lid. and between the base and the different distribution, branch and termination cables (or approach - drop cables), and also inside the housing elements for accommodating optical adapters for connectorized freckles and any fusion splices in " splitter "and in derivation.

Background of the invention

[003] Fiber-optic networks require the provision of user-activation splice points and endpoints, which are protected by termination and / or distribution boxes generally installed externally and overhead.

[004] At a splice point, for example, one or more s fibers from a distribution cable received at a termination / distribution box are fused spliced to the respective fibers of a branch cable that exit from said box to reach a new splice point or a user activation endpoint .

However, at a user activation point, one of the fiber optic cable fibers arriving at an aerial termination box can be splittered to provide termination cables directed to end users of the network. . Fiber optic cable strands that reach a termination box but are not connected to a termination cable (drop cable) may pass through the box, unchanged or amended to a new extension cable, to proceed towards a new user splicing or activation point.

[006] These termination boxes shall be constructed to receive at least one multi-fiber distribution cable, and to release one or more branch cables and / or a compact drop cable, requiring accommodation. for splitter or splice fusion splices.

[007] A problem with these housings arises from the risk of damage to the compact terminal cables already installed therein during maintenance operations of the optical network, when the installer needs to move the internal fiber accommodation elements in the housing, causing frequency, improperly bending the compact optical termination cables and even damaging the connection adapters of these termination cables, which need to be disconnected from the adapters for the installer to have access to fiber melt areas. To mitigate these risks, termination boxes have been proposed with the inner housing elements of the compact terminating cables physically separated from the inner housing elements of the multi-fiber branch cables.

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

[009] While minimizing the risks of damage mentioned above and reducing the number of costly service calls for maintenance of the multi-fiber branch cable network or compact termination cables, this well-known solution for physically separating cable accommodation elements It is complex and costly.

[010] Another drawback of these known termination boxes is the positioning of the freckles for the compact termination cables, which do not prioritize the ease of installing such cables close to the strand, to avoid interference with the inconveniences encountered on streets and roads. .

Yet another shortcoming of the well-known transfer boxes is related to sealing solutions in a only stage and not always with an economically advantageous construction, of elastic housing of sealing rings (grommets) in the cable entries and freckles, no longer providing a desired seal against ingress of moisture and insects inside the box or using constructions .

[012] When an external and overhead termination box is fitted with cables arranged in the same direction as the strand, there is a risk of water dripping into the box. To avoid this risk, installers are advised to leave a small leftover cable that is set to "U" to form a "dripping pan" just before entering the box. However, this measure is not always adopted.

[013] The absence of moisture drainage media that eventually penetrates through the first stage also reduces the reliability of these well-known single-stage sealing solutions. These facts indicate the desirability of improving the watertightness of these weather-intensive outdoor outdoor termination boxes.

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

Examples of termination boxes of the type considered herein can be found in US 6,226,434. and US 9,310579.

Summary of the invention

[016] In view of the above discussed aspects, the present invention aims to provide a terminal box for optical access networks, aerial installation and which is of simple and robust construction with few parts. for easy and safe handling of the fiber splicing elements by the respective installer team without interference with the termination cable connection elements to be handled by another installer team.

[017] The present invention further aims to provide an aerial installation optical termination box which, in addition to its simple and safe construction, is endowed with a high degree of tightness that does not require the installer's special care and is provided with a sealing system. double acting on the box, distribution cables, branch cables and termination cables and allowing to contain large jets of water in a first stage and even droplets and small insects in a second stage, with drainage between the two stages.

[018] Still another object of the invention is to provide an aerial installation optical termination box that is not only simple and sturdy in construction but ensures the correct anchorage of the termination cables (drop cables) upon closing. of the lid.

According to a first aspect of the invention, the optical termination box comprises: a base having a bottom wall and peripheral walls defining at least one front edge and side openings for passage of multifiber optical cables; a hinged lid 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 hinged tray at the base and having a rear face and a front face movable between a first position with its rear face seated on the base and the front face exposed to the installer and a second position in which it exposes the rear face in a horizontal position. to the installer.

According to a second aspect of the same invention, the peripheral walls of the base have multiple front edges which define, two by two, a drainage channel, with two peripheral walls having their front edges and the respective channel. drainage line following the inner contour of the side openings, each side opening housing and retaining an elastomeric sealing sleeve, closing the cross section of each side opening not occupied by a multi-fiber optic cable through said side opening, the lid having its peripheral walls provided with multiple rear edges, whereby in the closed position of the lid the front and rear edges of the base and lid, in the regions devoid of the side openings, are interlocked together, forming a sealing maze.

According to a third aspect of the invention, the tray further incorporates, in the region of the side openings and on its front face: a pair of side cradles, each taking the form of a channel with its recessed front edges, each lateral cradle being inferiorly provided with projecting rear edges, at least one of the which have cooperative extensions, in sealing overlap, with respective sealing bushings; and a pair of lateral elastomeric sealing members with their front edge provided with slots aligned with the recesses of the front edges of the side cradles, said slots and recesses aligned with each other receiving the tight fit of the respective end cables, being an extension of a rear edge of the lid seated against a respective sealing member and an extension of another rear edge of the cooperating lid overlapping with a front edge of a respective side cradle.

According to a fourth aspect of the invention, the termination box further comprises an anchor member engaged and retained within each side cradle and having a front face provided with anchor cutouts aligned with the recesses of the respective side cradle and into which the respective end cables are fitted and anchored, by pressure / interference, being an extension of at least one of the rear edges of the lid when closed, seated against a respective end cable, forcing it into the respective anchor cutout.

[023] The different aspects of the invention allow optical fiber fusion or splitter splicing operations to be carried out with the tray open and horizontal, without risk of undue bending or unwanted manipulation of the front cable connections provided on the front face. from the tray. In addition to this improved safety of termination box operations by different teams, the new construction ensures a reliable seal, regardless of operator interference, by forming labyrinth between the facing edges of the lid and the base and also by the provision of bushings and sealing elements acting in the through openings of the multi-fiber optic cables and the compact terminal cables respectively, these sealing means being operatively associated with a intermediate drainage. The new solution also allows the enclosure lid to be closed only with the existing terminal cables properly seated in the anchor elements.

Brief Description of Drawings

In the following, the invention will be described based on the accompanying drawings, given by way of example of one embodiment of the invention and in which:

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 sleeve for tight and sealed passage of a corresponding distribution or branch cable;

Figure 2 is a front perspective view of the box of figure 1, with the lid in the open condition, but having the inner tray hinged to the base and still seated within the latter and having its front face carrying two sets of eight. retractable adapters for connecting termination cables (drop cables);

[027] Figure 3 is a front perspective view of the termination box with its base in an upright hanging position on a strand, its lid also in an upright and open position and the inner tray stabilized in an open horizontal position, with your face rear facing upwards to expose to the installer the splitter of a termination cable, the housing elements of the splice / splice cable splices and fiber extension accommodation elements;

Figure 4 is a front perspective view of the base, exploding exploded sealing bushings for distribution and branch cables, a lock for retaining the lid in the closed position and a pair of handles for strand suspension;

[029] Figure 5 is a front perspective view of the inner tray, exploding explodedly, a pig tail reserve cover, a pair of inner tray side sealing elements, a pair of rear anchor elements compact termination cables plus a sealing plate carrying two collapsible adapter bracket sets;

Fig. 6 is a top view of the assembly of Fig. 3 illustrating the rear face of the inner tray;

Figure 7 is a plan view of the inside of the base, lid and lock in the open box condition and devoid of the inner tray;

Fig. 8 is a cross-sectional view of the termination box in the closed condition and devoid of the inner tray, said section having been taken in the direction of arrow VIII-VIII in Fig. 7;

Figure 9 represents a view similar to Figure 7, but including the inner tray in the closed condition and having its retractable adapters connected to respective compact termination cables; and [034] Figure 10 is a partial longitudinal sectional view of the termination box in the closed condition and illustrating the sealing means acting on a distribution or branch cable and the anchoring means acting on a compact termination cable.

Description of the invention

As illustrated in the drawings and mentioned above, the optical termination box in question, of generally overhead installation in a non-illustrated strand, comprises a base 10 and a lid 20, both of electrical non-conductive material, with the base 10 incorporating in one piece, a bottom wall 11 and peripheral walls 12 and defining at least one front edge 12a, preferably multiple front edges 12a, which two to two define a drainage channel 12b. Two of the peripheral walls 12 are provided with side openings 13 for passing CO multi-fiber optic cables, which may be defined by a multi-fiber distribution cable or one or more multi-fiber branch cables.

In the preferred embodiment in which the peripheral walls 12 of the base 10 have multiple front edges 12a, the latter and the respective drainage channel 12b follow the inner contour of the side openings 13, each housing and retaining a sealing sleeve 14. , in elastomer, closing the cross section of each side opening 13, not occupied by a multi-fiber optic cable CO, passing through said side opening 13.

According to the illustrated construction, each sealing sleeve 14 is laterally and laterally provided with grooves 14a in which each respective extension is fitted. front edge 12a of base 10 accompanying contour of respective side opening 13 of base 10. Thus, each sealing sleeve 14 is securely retained at the front edges 12a of base 10, providing two distinct sealing regions. In addition, each sealing sleeve 14 has a transverse groove 14b, median open into the drain rail extension 12b accompanying the outline of the respective side opening 13 of the base 10.

The seals 14, provided in side openings 13 devoid of a respective CO multi-fiber optic cable, have substantially massive construction provided only with said transverse groove 14b. However, sealing bushings 14 provided in side openings 13 traversed by respective CO multi-fiber optic cable are provided with a longitudinal through-hole 14c, traversing transverse groove 14b and having at least a median portion thereof having a diameter smaller than the respective multi-fiber cable CO to be disposed through said longitudinal through hole 14c.

Thereby, any moisture that enters through the longitudinal bore 14c and the multi-fiber optic cable CO is led through the transverse slot 14b to the drainage channel 12b.

The lid 20 has a top wall 21 and peripheral walls 22 defining at least one and preferably multiple rear edges 22a which two to two define a lid rail 22b, the lid 20 hinged to the base. 10, preferably in a peripheral wall 12 thereof, devoid of side openings 13, to be displaceable between an open position and a locked position locked on base 10 and in which the front and rear edges 12, 22a of base 10 and lid 20 in regions devoid of side openings 13 are seated together and preferably nested together forming a maze of seal.

The optical termination box further comprises a tray 30 hinged to the base 10 and having a rear face 31 and a front face 32 and movable 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 it exposes the rear face 31 to the installer.

Tray 30 has its rear face 31 carrying AF fiber accommodation means, EF fiber splicing means, an SF fiber splitter and C connectors receiving split FO optical fibers from a fiber derived from one CO fiber optic cable. Front face 32 of tray 30 carries AS output adapters to each receive the fitting of a respective CT terminal cable.

The tray 30 further 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 front edges 33a provided with recesses 33b receiving the snug 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 U-shaped cross-sectional channel 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 base 10, it is possible for an installation team to perform fusion splicing and further splitting of an optical fiber using the rear face 31 of tray 30 as a kind of horizontal table when in its second position illustrated in figure 3. Optical splice or splice staff can simply move tray 30 to its second horizontal position and work on rear face 31, without risk of damaging the CT terminal cable connections disposed on front face 32 of tray 30.

As shown in Figure 3, bottom wall 11 of base 10 is usually arranged in a vertical mounting plane to remain suspended in a strand (not shown) by means of hanging hooks 15 attached to base 10 and which may take different constructs, such as the one illustrated exemplarily.

Tray 30 is preferably hinged to a peripheral wall 12 of base 10 in a lower region thereof, devoid of side openings 13, to be angularly displaced between its first position and its second position, in which it remains stabilized with its rear face 31 facing up in horizontal position.

Tray 30, to be stabilized in its second position, is partially seated against a peripheral wall region 22 of lid 20, adjacent its hinge to base 10, lid 20 being in a coplanar open position to base 10, as shown in figure 3.

[048] In the exemplary embodiment illustrated, tray 30 receives a front sealing plate 35, carrying the AS output adapters over which it is attached. A complementary cap 36 is mounted to cover a spare region of fiber optic extensions derived from the SF (pig tails) fiber and connected to the AS freckle adapters.

In the illustrated construction, the base 10 internally incorporates a locking latch 16, elastically deformable from an operative position, in which it locks the tray 30 in its first seated position at the base 10, to a dead position, in which it releases the angular displacement of tray 30 from the first position to the second position.

In a particular construction of the invention, lid 20 is locked to base 10 by a lock 40 carried by a peripheral wall 12 of base 10, opposite that of pivoting lid 20 to base 10 and movable between an open position and a closed position in which it locks against the peripheral walls 12 of the base 10 and the lid 20. It should be understood that the lock 40 can also be pivotally mounted to a peripheral wall 22 of the lid 20 to act against the base 10, when closing the optical termination box.

With respect to the proper sealing of the optical termination box, each side cradle 33 is provided inferiorly with projecting rear edges 33c, at least one of which has cooperative overlapping sealing extensions with respective sealing bushings 14, as illustrated in Figure 10, providing axial retaining means for said bushings and further a baffle for hindering the penetration of water jets into the housing through the junction region between the sealing bushings 14 and the rear face 31 of the tray 30. The front face 32 of tray 30 further carries, in the region of the side openings 13 of base 10, a pair of elastomeric sealing elements 50, with their front edge 51 provided with slots 52 aligned with the recesses 33b of the edges 33a of said side cradles 33, said slots 52 and recesses 33b, being aligned with one another to receive the tight fit of respective terminal cables CT, being an extension of a rear edge 22a of lid 20 seated against and compressing a respective sealing member 50 around a respective terminating cable CT and an extension of another rear edge 22a of the overlapping cooperating cover 20 with a front edge 33a of a respective side cradle 33, as shown in Figure 10.

In one of its embodiments, the optical termination box further comprises an anchor element 60 fitted and retained within each side cradle 33 and having a front face 61 provided with anchor cutouts 62 aligned with recesses 33b of the side cradle 33 and into which the respective CT terminal cables are fitted and anchored under pressure.

With this construction, when the lid 20 is closed, an extension of at least one of its rear edges 22a is seated against a respective terminal cable CT, forcing it into the respective anchor cutout 62, as illustrated in FIGS. 1 and 3.

[055] The anchoring of the CT terminal cables is ensured by the closure of the cover 20 due to the fact that an extension of one of its rear edges 22a of the cover 20 besides overlapping cooperates with an anterior edge 33a of a respective side cradle. 33, providing sealing, said force CT terminal cable into respective anchor cutout 62.

Although only one configuration of the optical termination box in question is illustrated here, it should be understood that changes in shape and arrangement of components may be made without departing from the constructive concept defined in the accompanying claims. report.

Claims

1. Optical termination box, characterized in that it comprises:

- a base (10) having a bottom wall (11) and peripheral walls (12) defining at least one front edge (12a) and side openings (13) for multi-fiber optic (CO) cable routing;

- 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 to 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 to the base (10) and having a rear face (31) carrying fiber accommodation means (AF), fiber splicing means (EF), a fiber splitter ( SF) and connectors (C) receiving split optical fibers (FO) from a fiber derived from a multi-fiber optic (CO) cable, and a front face (32) carrying (AS) output adapters to each receive the socket of a respective terminal cable (CT), said tray (30) being movable between a first position with its rear face (31) seated on the base (10), above the side openings (13) and with its front face (32) exposed to the installer, and a second position in which it exposes its rear face (31) to the installer.

Box according to claim 1, characterized in that the tray (30) incorporates a pair of side cradles (33), each taking the form of a U-shaped cross-sectional channel with its edges. previous (33a) parallel to each other and provided with recesses (33b) configured to each receive the socket of a terminal cable (CT) to be projected out of the optical termination box.

3. Optical termination box, characterized in that it comprises:

- a base (10) having a bottom wall (11) and peripheral walls (12), two of which being provided with side openings (13) for multi-fiber optic (CO) cable routing, said peripheral walls (12) having multiple front edges (12a) defining two by one, a drainage channel (12b), the two peripheral walls (12) having their front edges (12a) and the respective drainage channel (12b) accompanying the inner contour of the side apertures (13), each side aperture (13) housing and retaining an elastomeric sealing sleeve (14), closing the cross section of each side aperture (13) not occupied by a passing multi-fiber optic cable (CO) by said lateral opening (13);

- a lid (20) having a top wall (21) and peripheral walls (22) provided with multiple rear edges (22a) defining, two by two, a lid rail (22b), the lid (20) ) hinged to 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 in which the front and rear edges ( 12a, 22a) of the base (10) and the lid (20), in the regions devoid of the side openings (13), are interlocked together, forming a sealing maze; and

- a tray (30) hinged to the base (10) and having a rear face (31) and a front face (32) and movable between a first position with its rear face (31) seated on the base (10) and exposing the front face (32) to the installer and a second position in which it exposes the rear face (31) to the installer, said tray (30) further incorporating, 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 their recessed front edges (33a), each cradle (33b) lateral (33) being provided inferiorly with projecting rear edges (33c), at least one of which have cooperative extensions, in sealing overlap, with respective sealing bushings (14); and a pair of elastomeric side sealing members (50) with their 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 receiving the tight fitting of the respective end cables (CT), being an extension of a rear edge

(22a) of the lid (20) seated against a respective sealing member (50) and an extension of another rear edge of the cooperating lid (20), overlapping with a front edge (33a) of a respective side cradle (33) .

Housing according to Claim 3, characterized in that each sealing sleeve (14) is laterally and subsequently provided with slots (14a) in which a respective front edge extension (12a) of the base is fitted. (10) accompanying the outline of the respective side opening (13) of the base (10).

Housing according to Claim 4, characterized in that each sealing sleeve (14) has a transverse tear (14b), median and open into the housing. drain rail extension (12b) accompanying the contour of the respective side opening (13) of the base (10).

Housing according to any one of claims 3 to 5, characterized in that the sealing bushings (14) provided in side openings (13) through the respective multi-fiber optic cable (CO) are provided with a longitudinal hole. through-pass (14c) of at least a median portion of its length having a diameter smaller than that of the respective multi-fiber (CO) cable.

7. Optical termination box, characterized in that it comprises:

- a base (10) having a bottom wall (11) and peripheral walls (12), two of which being provided with side openings (13) for multi-fiber optic (CO) cable routing;

a lid (20) having a top wall (21) and peripheral walls (22) provided with multiple rear edges (22a), the lid (20) being hinged to a peripheral wall (12) of the base (10), devoid of from the side openings (13) to be movable between an open position and a closed position locked on the base (10); and

- a tray (30) hinged to the base (10) and having a rear face (31) and a front 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 exposes the rear face (31) to the installer, said tray (30) further incorporating, in the region of the lateral openings (13) and on its front face (32), a pair of side cradles (33), each taking the form of a channel with their front edges (33a) provided with recesses (33b) receiving tight fitting of respective cables terminals (CT);

- an anchor element (60) fitted and retained within each side cradle (33) and having a front face (61) provided with anchor cutouts (62) aligned with the recesses (33b) of the respective side cradle (33) and into which the respective end cables (CT) are fitted and frictionally anchored, being an extension of at least one of the rear edges (22a) of the cover (20) when closed, seated against a respective end cable (CT) by forcing it into the respective anchor cutout (62).

Box according to Claim 7, characterized in that the front face (32) of the tray (30) further comprises a pair of lateral elastomeric 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) receiving the tight fitting of respective terminal cables (CT), one being extension of a rear edge (22a) of the cover (20) seated against and compressing a respective sealing member (50) around a respective end cable (CT) and being an extension of another rear edge (22a) of the cover (20) ) cooperating, overlapping, with an anterior edge (33a) of a respective side cradle (33) and forcing said terminal cable (CT) into the respective anchor cutout (62).

Enclosure 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) which define, two by two, a rail. drainage (12b), with the two peripheral walls (12) having their edges (12a) and respective drainage channel (12b) accompanying the inner contour of the side openings (13), each side opening (13) housing and retaining an elastomeric sealing sleeve (14), closing the cross section of each opening side (13) not occupied by a multi-fiber optic (CO) cable passing through said side opening (13).

Enclosure according to claim 9, characterized in that the front and rear edges (12a, 22a) of the base (10) and the lid (20), in the regions devoid of the side openings (13), are fitted between each other. themselves, forming a sealing maze.

Box according to any one of claims 9 or

10, characterized in that each side cradle (33) is inferiorly provided with projecting rear edges (33c), at least one of which has cooperative extension, in sealing overlap, with respective sealing bushings (14).

Box according to any one of claims 7 to 9

11, characterized in that the rear face (32) of the tray (30) carries fiber accommodation means (AF), fiber splicing means (EF), a divider element

fiber splitter (SF) and connectors (C) receiving split optical fibers (FO) from a fiber derived from a multi-fiber optic cable (CO) and the front face (31) carrying (AS) output adapters each to receive the fitting of a respective terminal cable (CT).

Box according to any one of claims 1 to 12 and having the bottom wall (11) of its base (10) arranged in a vertical mounting plane, characterized in that the tray (30) is hinged to a peripheral wall (12) 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 rear face (32) facing upwards in positioning horizontal.

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 peripheral wall region (22) of the lid (20) adjacent to its hinge. to the base (10), the lid (20) being in a coplanar open position to the base (10).

Box according to any one of claims 1 to

14, characterized in that the base (10) internally incorporates a locking tab (16), elastically deformable from an operative position, in which the tray (30) locks 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.

Box according to any one of claims 1 to

15, characterized in that the lid (20) is locked to the base (10) by a lock (40) carried by a peripheral wall (12, 22) of one of the opposite base parts (10) and lid (20) that of pivoting the lid (20) to the base (10) and displaceable between an open position and a closed position, in which it locks together facing peripheral walls

(12, 22) of the base (10) and the lid (20).