WO2020132732A1 - Boîtier optique de dérivation ou de terminaison d'un câble optique dans un réseau de fibres optiques - Google Patents

Boîtier optique de dérivation ou de terminaison d'un câble optique dans un réseau de fibres optiques Download PDF

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Publication number
WO2020132732A1
WO2020132732A1 PCT/BR2019/050562 BR2019050562W WO2020132732A1 WO 2020132732 A1 WO2020132732 A1 WO 2020132732A1 BR 2019050562 W BR2019050562 W BR 2019050562W WO 2020132732 A1 WO2020132732 A1 WO 2020132732A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical
cover
housing
box
open end
Prior art date
Application number
PCT/BR2019/050562
Other languages
English (en)
Portuguese (pt)
Inventor
Anderson Marcelo STANCYK
Original Assignee
Furukawa Electric Latam S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Furukawa Electric Latam S.A. filed Critical Furukawa Electric Latam S.A.
Priority to DE112019006535.1T priority Critical patent/DE112019006535T5/de
Priority to GB2110383.3A priority patent/GB2594022B/en
Priority to MA53774A priority patent/MA53774B1/fr
Priority to ES202190034A priority patent/ES2845211B2/es
Publication of WO2020132732A1 publication Critical patent/WO2020132732A1/fr
Priority to CONC2021/0008782A priority patent/CO2021008782A2/es

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/444—Systems or boxes with surplus lengths
    • G02B6/4441—Boxes
    • G02B6/4442—Cap coupling boxes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/444—Systems or boxes with surplus lengths
    • G02B6/4441—Boxes
    • G02B6/4442—Cap coupling boxes
    • G02B6/4444—Seals

Definitions

  • the present invention refers to an optical derivation or termination box, of airtight construction, of the type that has a housing provided with an access opening to be closed by a sealed lid and provided with an input adapter having an external end connected to an optical distribution cable, formed by one or more optical fibers, and an internal end through which a fiber or optical fiber division of the distribution cable is connected to a balanced and / or unbalanced splitting device, the cover provided with output adapters, each of which has an internal end, connected, by means of the splitter, to a fiber or fiber division of the optical distribution cable, and an external end adapted to receive a connector from a respective optical cable of a user.
  • An optical termination box is described in patent application BR 10 2016 029000-7, by the same applicant, presenting multiple freckles for the connection of multiple user terminal optical cables, from an optical distribution cable to be received in said optical box.
  • the single optical fiber or each of the multiple optical fibers of the optical distribution cable, received in the optical termination box, is connected to a respective freckle adapter, mounted on a box cover, by means of fiber optic extensions of the distribution cable itself or through divisions ("splitters") of at least one optical fiber in the distribution cable which can be, for example, of the "low friction" type.
  • the aforementioned construction was developed to have the operations of receiving and retaining, without risk of loosening, the optical cable for the distribution of multiple fibers or "low friction" (with only one fiber) and also the connection operations of or of the fibers of the optical distribution cable, with the outlet adapters of the box closure cover, carried out by the installer operator outside the installation site of the termination box and before the closure cover is sealed against the box, watertight and permanent, preventing the movement of the internal elements of accommodation of the fiber optic extension (s) inside the housing of the optical termination box and preventing movement of the optical components by vibrations or impacts.
  • the optical box can be equipped with means that allow its operation not only as an optical termination box, but also as an optical derivation box, capable of receiving a distribution cable or cord, containing one or multiple fibers optical, with only part of balanced or unbalanced divisions of an optical fiber, or part of the multiple optical fibers of the distribution cable, being terminated inside the box, so that each fiber, or fiber division, terminated in the box, can be connected to a respective user terminal cable, with the other fiber divisions or other optical fibers of the distribution cable, not terminated inside the box, leaving the latter through a respective output adapter, to be directed to another junction box and / or optical termination by means of a continuation cable or cord.
  • the optical box object of BR 10 2018 075693-1 thus presents the advantageous aspects of application versatility as a junction box and / or termination to be used in a network of optical fibers with connected cables, preferably pre-connected. , and to allow the operations to assemble the input adapter, the output adapters and the box closure cover, to be carried out, at the factory, so that the optical box is received by the installer, already in the sealed and tested condition, preventing access to its interior during the installation of the box in the fiber optic network, with installers simply connect the end connectors of the optical distribution, continuation and termination cables to the respective adapters previously mounted in the opposite extreme regions of the optical box housing.
  • the optical box object of patent application BR 10 2018 075693-1 still has its housing provided with two opposite extreme openings, to be hermetically sealed, one being to receive the distribution cable or continuation, by means of an input adapter, and the other to be closed by the sealed lid that carries the freckle and (if applicable) continuation adapters.
  • This construction in addition to requiring the components necessary for the two extreme closings and the times of welding by melting or curing the adhesive, with corresponding cost of manufacture and assembly, makes this solution difficult to process and productivity.
  • the present invention has the objective of providing an optical box of simple and robust construction, with a relatively small number of component parts, having a housing provided with a single access opening to be hermetically closed by a mechanically sealed and recoverable lid, said optical box it is also equipped with means that allow its operation not only as an optical termination box, but also as an optical derivation box, capable of receiving a distribution cable or cord, containing one or multiple optical fibers, with only part of balanced or unbalanced divisions.
  • each fiber or fiber division finished in the box can be connected to a respective user terminal cable, with the other divisions of fiber or other optical fibers of the distribution cable, unfinished inside the box, leaving the latter through a respective the output adapter, to be directed to another junction box and / or optical termination by means of a continuation cable or cord.
  • the optical box can be used as an optical junction box, allowing, if desired and convenient, to derive, in each optical box of a network, part of the optical input power, according to the needs each application and until there are no more optical fibers to be derived or until there is not enough power for new derivation of the optical signal from the last box, which starts to operate only as an optical termination box.
  • Figure 1 represents an exploded perspective view of an optical box, operating as a junction box
  • Figure 2 represents a bottom plan view of the exploded set illustrated in Figure 1 and receiving, by means of an input adapter, an optical distribution cable formed, in this example, by a single optical fiber that is divided to have user optical fibers, terminated in the optical box, to be connected, each one, to a respective user terminal cable, and a continuation optical fiber, not terminated inside the box, leaving the latter through a respective continuation adapter, to be directed to another junction box and / or optical termination, by means of a continuation cable or cord;
  • an optical distribution cable formed, in this example, by a single optical fiber that is divided to have user optical fibers, terminated in the optical box, to be connected, each one, to a respective user terminal cable, and a continuation optical fiber, not terminated inside the box, leaving the latter through a respective continuation adapter, to be directed to another junction box and / or optical termination, by means of a continuation cable or cord;
  • Figure 3 represents a perspective view of the optical box of figure 1 in an assembled and medium condition and longitudinally cut;
  • Figure 4 represents a perspective view of the optical box of figures 1 and 3, when in the assembled condition and observed by the end closed by the cover;
  • Figure 5 represents a median longitudinal section view of the optical box illustrated in figure 3;
  • Figure 5A represents an enlarged detail of figure 5, to better illustrate how the end cap is seated, retained and sealed, by a retaining ring, against the open end of the optical box housing;
  • Figure 6 represents a front view of the cover of the optical box of figures 1, 3 and 5;
  • Figure 7 represents a top plan view of the inner side of the cover retaining ring on the optical box housing.
  • Figure 8 represents an exploded perspective view of the assembly defined by the tubular housing, the cover plate and the retaining ring, illustrating the rotational locking elements of the plate at the open end of the tubular housing.
  • the invention in question is applied to the hermetic CX optical box, of the type that has a tubular housing 10, of approximately circular cross section, but not limited to this configuration, and formed in any suitable material to the underground installation or to the weather, for example, polypropylene, having a closed end 10a and an open end 10b, opposite to the first and of circular contour, provided with an external thread 11 and to be closed by a cap 20, preferably built in a plate 21 of any suitable polymer, of substantially circular contour and having an outer side 20a and an inner side 20b which is settable and fixable against the open end 10b of the tubular housing 10.
  • a tubular housing 10 of approximately circular cross section, but not limited to this configuration, and formed in any suitable material to the underground installation or to the weather, for example, polypropylene, having a closed end 10a and an open end 10b, opposite to the first and of circular contour, provided with an external thread 11 and to be closed by a cap 20, preferably built in a plate 21 of any suitable polymer, of substantially circular contour and having an
  • the plate 21 incorporates, on the inner side 20b of the cover
  • the plate 21 has a peripheral region 23, radially external to the tubular projection 22 and which incorporates, on the inner side 20b of the lid 20, a circumferential rib 23a that is seated against the open end 10b of the housing 10, when closing the cover 20 on housing 10.
  • the plate 21 is provided with at least one indexing element 24, configured to be coupled to a respective locking element 14 provided at the open end 10b of the tubular housing 10, allowing the plate 21 to be rotationally locked in the tubular housing 10 when seated, indexed against the open end 10b of the tubular housing 10.
  • the indexing element 24 takes the form of a reduced axial shoulder 24a, incorporated into the circumferential rib 23a of the peripheral region 23 of the plate 21, the locking element 14 being defined by a respective axial recess 14a provided at the open end 10b of the tubular housing 10, to receive the axial shoulder 24a of the plate 21, rotationally locking the latter in an indexed position when seated against the open end 10b of the tubular housing 10.
  • the tubular projection 22 carries, externally, at least one sealing ring 30, in elastomer, which is radially compressed against the inner facing of the open end 10b of the housing 10, ensuring the tightness of the cover 20-housing junction 10.
  • the fixation of the cover 20 on the housing 10 is obtained by a retaining ring 50 provided with an internal thread 51 to be engaged with the external thread 11 of the open end 10b of the housing 10 and incorporating, radially and internally, a flap. extreme radial 52 which is axially seated against the plate 21, on the outer side 20a of the cover 20.
  • the retaining ring 50 carries at least one locking element 55 which is engaged with a locking receiver element 25 provided on the cover 20, permanently and rotationally locking the retaining ring 50 on the plate 21 and, consequently, in the housing 10 , when the cap 20 is completely pressed against the housing 10 by threading the retaining ring 50 on the outer end 10b of the tubular housing 10.
  • multiple locking receiver elements 25 are provided which take the form of a circular alignment of shoulders 25a incorporated in the plate 21, on an external side 20a of the cover 20, while the respective elements locking elements 55 take the form of the same alignment of recesses 55a provided in the extreme radial flap 52 of the retaining ring 50, on its face facing the cover 20, recesses 55a which are dimensioned to each receive a respective shoulder 25a of the plate 21 at the end of the clamping stroke of the retaining ring 50.
  • the retaining ring 50 operates as an inviolable seal of the CX optical box, it is constructed with at least one weakened radial region 56 (figures 4 and 7), to allow the ring to be broken in that region, to opening of the optical box already finished, in case any fault or irregularity is detected in its manufacture and assembly.
  • the housing 10, the lid 20 and the internal elements already adapted inside the housing can be used.
  • the illustrated CX optical box is built to operate, simultaneously, as a junction and termination box, with its plate 21 provided with an FE entrance hole, a plurality of FS exit holes, of a continuation hole FC and also a pressurization hole OP, whose functions will be described below.
  • an AE input adapter is watertightly fitted with an external end to which a CE input connector provided, preferably by pre-connectorization, can be attached to the end of an optical CD distribution cable.
  • a CE input connector provided, preferably by pre-connectorization, can be attached to the end of an optical CD distribution cable.
  • optical CD distribution cable which can be formed by a single optical fiber or by multiple optical fibers.
  • An internal end of the AE input adapter is connected with a CL connection connector, preferably by means of pre-connectorization, of at least one fiber extension EFO optics that can represent an extension of the single optical fiber of a "monofiber" CD distribution cable, as illustrated, or an extension of one of the optical fibers of a "multi-fiber” CD distribution cable, said CD distribution cable providing a predetermined optical power.
  • the fiber optic extension EFO is guided, inside the tubular housing 10, to a respective DE input splitter device, in which it is divided into a continuation FC fiber and an FT termination optical fiber, with unbalanced optical powers , the FT terminating optical fiber being conducted, with or without seams by EF fusion of intermediate harnesses, to a DS splitter device, in which it is divided into multiple FU user optical fibers, each of which is selectively connectable, by connectorization, preferably by pre-connectorization, with respective C connectors, at the internal ends of the respective AS freckle adapters, mounted, in watertight, in the respective freckle holes FS provided in the plate 21 of the cover 20, as shown, somewhat schematic, in figure 2.
  • C connectors provided, usually by pre-connectorization, are connected at the ends of the respective user terminal cables.
  • ary CT. FU user optical fibers can have equal or unbalanced optical powers, to provide different connection points for users with different optical power demands.
  • the FT terminating optical fiber generally has an optical power lower than that of the FC continuation optical fiber and is dimensioned according to the needs of the users. be served by it and with the topology of the optical fiber network.
  • the number of input splitter devices DE and freckle DS may vary depending on the constructive characteristics of the distribution cable CD and also the number of freckle adapters AS to be provided through the cover 20 of the CX optical box.
  • the FC continuation optical fiber released from the DE input splitter device, is preferably pre-connected with a C connector that is coupled to an AC continuation adapter provided in the FC continuation hole of the plate 21 of cover 20.
  • a C connector provided, usually by pre-connectorization, can be connected to the end of a DC continuation cable to be led to a subsequent CX optical junction or termination box in the network or bus of optical boxes.
  • the AE input adapter and the freckle AS adapters of the optical junction and termination boxes and the AC continuation adapter of the optical junction boxes have any suitable construction to leak through the respective hole through the plate 21 of the cover 20.
  • the tubular housing 10 is designed to operate in a fully hermetic manner after mounting the cover 20 against the open end 10b of the housing 10, with the cover 20 already carrying the input adapter AE, the output adapters of the AS and the AC continuation adapter, the latter being generally provided only in optical junction boxes.
  • the CX optical box After completing the installation of the CX optical box, with the cover 20 already closed and sealed against the tubular housing 10, the CX optical box, already hermetically closed, can be pressurized with a suitable gas, to be introduced inside the box optics CX by means of a pressurization valve V, mounted through the OP pressurization orifice provided in the plate 21 of the cover 20, as shown in figures 1.5 and 6.
  • the optical box in question is of the type that also includes a tray 40, made of non-conductive electrical material, to accommodate the fiber optic extensions EFO, the FT termination optical fibers, the user optical fibers FU, the fiber FC continuation optics and the DS input and output splitter devices inside the CX optical box, the tray 40 being housed inside the tubular housing 10 when the cover 20 is fixed to the tray 20.
  • the tray 40 has a first end 41, to be seated internally against the closed end 10a of the tubular housing 10, and a second end 42 mounted to the inner side 20b of the cap 20, to be displaced with it when fixing the cap 20 to the open end 10b of the tubular housing 10 .
  • plate 21 of cover 20 can be constructed with only "n + 1" through holes, with "n" holes being FS output holes, each receiving and retaining a respective AS output adapter for each user CT terminal optical cable and an FE input hole to receive and retain an AE input adapter. In that case, the cap 20 does not need to have the continuation hole FC.
  • cover plate 21 of cover 20 has "n + 2" holes, for mounting "n” AS output adapters, AE input adapter and an adapter AC continuation into a respective FC continuation hole, and an optical DC continuation cable is attached to the external end of the AC continuation adapter.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Cable Accessories (AREA)

Abstract

Le boitier optique (CX) comprend une structure tubulaire (10) présentant une extrémité fermée (10a) et une extrémité ouverte (10b) avec un filetage extérieur (11), et un couvercle (10) à fixer et bloquer au niveau de l'extrémité ouverte (10b) de la structure tubulaire (10) au moyen d'un anneau de retenue (50) doté d'un filetage intérieur (51) à mettre en prise avec le filetage extérieur (11) de la structure (10), ainsi qu'un élément de blocage (55) à mettre en prise avec l'élément récepteur de blocage (25) du couvercle (20), bloquant l'anneau de retenue (50) sur le couvercle (20) et sur la structure (10). Le couvercle (20) est traversé par un adaptateur d'entrée (AE) dans lequel peut venir s'accoupler un câble optique de distribution (CD) et par des adaptateurs de sortie (AS) dans lesquels peuvent venir s'accoupler des câbles terminaux (CT) d'utilisateur.
PCT/BR2019/050562 2018-12-28 2019-12-23 Boîtier optique de dérivation ou de terminaison d'un câble optique dans un réseau de fibres optiques WO2020132732A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE112019006535.1T DE112019006535T5 (de) 2018-12-28 2019-12-23 Optikkasten zur abzweigung oder zum anschluss eines optikkabels in einem glasfasernetz
GB2110383.3A GB2594022B (en) 2018-12-28 2019-12-23 Optical derivation or termination box for an optical cable in a fibre-optic network
MA53774A MA53774B1 (fr) 2018-12-28 2019-12-23 Boîtier optique de dérivation ou de terminaison d’un câble optique dans un réseau de fibres optiques
ES202190034A ES2845211B2 (es) 2018-12-28 2019-12-23 Caja optica de derivacion o terminacion de un cable optico en una red de fibra optica
CONC2021/0008782A CO2021008782A2 (es) 2018-12-28 2021-07-01 Caja óptica de derivación o terminación de un cable óptico en una red de fibra óptica

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRBR1020180774182 2018-12-28
BR102018077418-2A BR102018077418A2 (pt) 2018-12-28 2018-12-28 caixa óptica de derivação ou de terminação de um cabo óptico em uma rede de fibras ópticas

Publications (1)

Publication Number Publication Date
WO2020132732A1 true WO2020132732A1 (fr) 2020-07-02

Family

ID=71125683

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2019/050562 WO2020132732A1 (fr) 2018-12-28 2019-12-23 Boîtier optique de dérivation ou de terminaison d'un câble optique dans un réseau de fibres optiques

Country Status (8)

Country Link
AR (1) AR117515A1 (fr)
BR (1) BR102018077418A2 (fr)
CO (1) CO2021008782A2 (fr)
DE (1) DE112019006535T5 (fr)
ES (1) ES2845211B2 (fr)
GB (1) GB2594022B (fr)
MA (1) MA53774B1 (fr)
WO (1) WO2020132732A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114114566A (zh) * 2021-10-09 2022-03-01 华为技术有限公司 连接盒

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW202349420A (zh) * 2022-03-03 2023-12-16 美商Ｐｐｃ寬帶公司 纜線包覆組件

Citations (6)

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US5097529A (en) * 1991-03-22 1992-03-17 At&T Bell Laboratories Space-saving optical fiber cable closure
US5793920A (en) * 1995-03-20 1998-08-11 Psi Telecommunications, Inc. Method and apparatus for anchoring an optical fiber cable
US5892872A (en) * 1997-07-17 1999-04-06 Northern Telecom Limited Network unit enclosure
US6385381B1 (en) * 1999-09-21 2002-05-07 Lucent Technologies Inc. Fiber optic interconnection combination closure
US6778752B2 (en) * 2002-05-31 2004-08-17 Corning Cable Systems Llc Below grade closure for local convergence point
BR102016029000A2 (pt) * 2016-12-09 2018-07-17 Furukawa Ind S A Produtos Eletricos caixa de terminação óptica

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GB9514769D0 (en) * 1995-07-19 1995-09-20 Raychem Sa Nv Clamping member
DE10249303A1 (de) * 2002-10-22 2004-05-06 Heinlein Plastik-Technik Gmbh Kappenartiger Drehverschluss für Behälter sowie mit einem solchen Drehverschluss versehener Behälter
DE202006008655U1 (de) * 2006-05-30 2006-08-03 CCS Technology, Inc., Wilmington Kabelmuffe zur strukturierten Ablage bzw. Handhabung von in Lichtwellenleiterkabeln geführten Lichtwellenleitern

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5097529A (en) * 1991-03-22 1992-03-17 At&T Bell Laboratories Space-saving optical fiber cable closure
US5793920A (en) * 1995-03-20 1998-08-11 Psi Telecommunications, Inc. Method and apparatus for anchoring an optical fiber cable
US5892872A (en) * 1997-07-17 1999-04-06 Northern Telecom Limited Network unit enclosure
US6385381B1 (en) * 1999-09-21 2002-05-07 Lucent Technologies Inc. Fiber optic interconnection combination closure
US6778752B2 (en) * 2002-05-31 2004-08-17 Corning Cable Systems Llc Below grade closure for local convergence point
BR102016029000A2 (pt) * 2016-12-09 2018-07-17 Furukawa Ind S A Produtos Eletricos caixa de terminação óptica

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114114566A (zh) * 2021-10-09 2022-03-01 华为技术有限公司 连接盒

Also Published As

Publication number Publication date
ES2845211B2 (es) 2022-12-28
GB202110383D0 (en) 2021-09-01
MA53774B1 (fr) 2022-10-31
BR102018077418A2 (pt) 2020-07-07
MA53774A1 (fr) 2021-10-29
ES2845211A2 (es) 2021-07-26
CO2021008782A2 (es) 2021-09-30
ES2845211R1 (es) 2022-03-16
GB2594022B (en) 2022-09-28
DE112019006535T5 (de) 2021-09-16
AR117515A1 (es) 2021-08-11
GB2594022A (en) 2021-10-13

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