EP2238491A1 - Boitier de raccordement d ' un cable de telecommunication - Google Patents
Boitier de raccordement d ' un cable de telecommunicationInfo
- Publication number
- EP2238491A1 EP2238491A1 EP08866540A EP08866540A EP2238491A1 EP 2238491 A1 EP2238491 A1 EP 2238491A1 EP 08866540 A EP08866540 A EP 08866540A EP 08866540 A EP08866540 A EP 08866540A EP 2238491 A1 EP2238491 A1 EP 2238491A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cable
- optical modules
- housing
- plate
- base
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 89
- 239000013307 optical fiber Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 15
- 238000009795 derivation Methods 0.000 claims description 7
- 235000019592 roughness Nutrition 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000000835 fiber Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 230000004927 fusion Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
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
- G02B6/44—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
- G02B6/4446—Cable boxes, e.g. splicing boxes with two or more multi fibre cables
Definitions
- the invention relates to a junction box and / or telecommunication cable connection, particularly used for the subscriber network (FTTH network or "Fiber To The Home" according to the English terminology generally used) and its method associated installation.
- FTH network or "Fiber To The Home” according to the English terminology generally used
- connection of subscribers with these telecommunication cables is carried out, from the foot of the building or from a floor, in standard housings in which the optical fibers are connected either mechanically or by fusion between them (splicing).
- a conventional fiber optic stitching solution is also used which requires to overwire cable lengths on each floor to perform the installation operations of these boxes based on optical fiber splicing.
- optical modules passage This technique allows the installer to splice on an optical module but will also have to louvre the unused modules contained in the cable. These optical modules in excess of length as the cable are also called optical modules passage.
- optical modules are often difficult to identify, especially for an operator performing a subsequent intervention.
- these standard housings intended to be installed on the door bearings, are generally square and therefore relatively bulky.
- the cable proposed in Dl is a cable whose modules are not only easily accessible, but are also permanently accessible.
- These cables may contain optical modules of 1 to 2 optical fibers 250 ⁇ m sheathed 900 ⁇ m so called “fiber with semi-tight insulation”, “tight” and / or optical modules gathering bundles of at least one optical fiber of 250 ⁇ m so-called “ compact tube ".
- a part of the cable is thus opened over a very short length (generally less than 10 cm) in the direction of its length, then a portion of the cable sheath is removed (for example by means of a tool particularly adapted to the shape and dimensions of the cable), which allows a first access window to the location provided for the derivation of one or more optical modules of the cable to the floor considered.
- the opening is safe for modules or optical fibers, because of their play in the cavity.
- the same operation is reproduced downstream, at a distance from the first window chosen as a function of the desired derivation length, which may range for example from a few tens of centimeters to several meters, and thus form a second access window.
- a permanently accessible cable thus enables in-line taping of the modules containing one or more optical fibers when the cable is stretched, without the need to lover the passing modules, as described above in the conventional stitching technique.
- An object of the invention is to provide a housing that facilitates access to the optical modules after mounting the housing.
- An object of the invention is to provide such a housing, wherein the cable is perfectly held in position.
- An object of the invention is to provide a connection box of reduced size.
- Another object of the invention is to provide a housing particularly well suited for the new generation of telecommunication cables, that is to say permanently accessible housings.
- Another object of the invention is to propose a method for implementing such a housing.
- At least one of these aims is achieved by means of a junction box and / or a connection of a telecommunication cable, in particular for an FTTH subscriber network, the cable comprising several optical modules gathering one or two optical modules together.
- a plurality of optical fibers comprising a main part comprising, at its ends, means for holding the cable in position on the main part, characterized in that it further comprises means for generating an excess length of the optical modules with respect to the axis of the cable and cause said optical modules to deviate relative to the axis of the cable, these optical modules being made accessible by at least one opening made by removing a portion of the cable sheath on a length between a few centimeters and ten centimeters by practicing a window.
- At least one of these objectives is also achieved by a method of installing a telecommunication cable, in particular for the FTTH subscriber network, the cable comprising a plurality of optical modules gathering one or more optical fibers themselves. in a junction box and / or cable connection according to one of the preceding claims, characterized in that, the cable having been previously opened over a given distance to access the optical modules, an excess length of the optical modules is generated by relative to the axis of the cable by causing said optical modules to deviate from the axis of the cable.
- Figure 1 shows a housing according to the invention according to a first embodiment of the invention
- FIG. 2 shows a housing according to the invention according to a variant of the first embodiment of the invention
- Figure 3 shows an enlarged view of an embodiment of a plate of the housing shown, in particular shown in Figure 1;
- FIG. 4 shows an enlarged view of the base of the housing shown in Figures 1 or 2;
- FIG. 5 represents the box illustrated in FIG. 1, once the telecommunication cable has been put in place on the base of the latter;
- Figure 6 is an enlarged view, from the representation of Figure 5, on an area B showing the cable arrangement in the housing;
- Figure 7 shows a portion of the housing according to the invention according to a second embodiment of the invention.
- FIG. 8 shows a first part of a housing according to the invention according to a third embodiment of the invention, on which a cable previously opened over a given distance has been placed;
- Fig. 9 is another further enlarged view, from the representation of Fig. 5, on an area B showing the arrangement of the cable in the housing.
- the branch and / or connection box is intended for a telecommunication cable 7, in particular for the FTTH subscriber network, the cable comprising one or more modules which themselves gather one or more optical fibers.
- the housing comprises a main part 1 which is, in a first embodiment, an elongated base 1 having, at its ends 11, 12, means 6 for holding the cable in position on the base 1, and means 13, 14 serving as positioning means for the cable 7 to keep a central position relative to the width of the housing, and also serving as a guide of the bypass tube which goes up to the maid.
- the housing has a length L such that 160 ⁇ L ⁇ 250 mm and a width I such that 30 ⁇ I ⁇ 50 mm and preferably l ⁇ 60 mm.
- L 190mm
- I 38mm
- a height h 36mm.
- the holding means 6, the cable disposed at the ends of the base 1 comprises roughnesses 6, preferably integral from the base 1, to limit the sliding movements / translation of the cable. These roughnesses 6 help to limit the rotational movements of the cable around its longitudinal axis.
- the housing mainly comprises means 4 for generating an excess length of the optical modules 8 with respect to the axis of the cable, these optical modules 8 being made accessible by at least one opening made in the cable sheath, and cause them to deviate from said axis.
- These means consist of a secondary part 4 forming a removable plate 4 adapted to be positioned on the base 1 with a spacing relative to the bottom of the base 1.
- This spacing makes it possible to pass the sheath of the cable 7, whose interior has been made accessible, between the plate 4 and the bottom of the base 1.
- the base 1 and the plate 4 are mounted together with complementary fastening means 5, for example formed of pads and hollow cylinders of corresponding dimensions.
- this spacing is dimensioned so that it constrains the sheath of the cable 7 thus made accessible against the bottom of the base 1, when the plate is mounted on the base 1.
- This plate 4 and positioned participates in the no rotation of the cable.
- the sheath 7 of the cable which is not cut partly ensures the mechanical strength of the cable and participates in the non-rotation of the cable due to its locking between the plate and the bottom of the base 1.
- the plate 4 also has an upper face 41 adapted to receive the optical modules of the cable. These optical modules can thus be made easily accessible for an operator.
- the upper part 41 of the plate generally has the shape of a flat rectangle. By the upper part 41 of the plate, it is necessary to understand the part of the plate which is oriented towards the outside of the base 1, when the plate 4 and the base 1 are mounted together.
- the removable plate 4 is therefore able to be positioned in the base 1 and is also arranged so that it generates an excess length of the modules optical 8 relative to the axis of the cable, these optical modules are made accessible by an opening made in the sheath of the cable, and are caused to deviate relative to said axis, in this case by positioning on the part upper 41 of the plate.
- the upper portion 41 of the plate 4 may however provide guide means 10 for the optical modules.
- These guide means 10 are not absolutely necessary for the implementation of the invention, but when implemented, they help to avoid any traction of the optical modules.
- the guide means 10 of the plate 4 may be formed of a plurality of pads 10. For example, one can provide four pads 10 facing each other in pairs, so that the optical modules pass between these pads.
- the studs 10 also have rounded external surfaces to allow, in this case, the winding of the optical module overelongers on the plate 4 (zone of coiling optical modules). This is interesting to avoid any accidental pull that could be caused on the cable 7.
- the positioning of the cable 7 is carried out as follows: the plate 4 is inserted between the sheath of the cable 7 and the optical modules 8 by generating an excess length and therefore the sheath of the cable 7 is placed between the base 1 and the plate 4, and the optical modules 8 are placed on the upper part 41 of the plate 4.
- the height of the side walls 9 of the base 1 located near the fastening means 5 is adapted, so that the plate 4 is preferably locally overtaken with respect to the walls 9 of the base 1. This generates the length of the optical modules relative to the axis of the cable.
- This overhead facilitates the identification and gripping optical modules to be derived by the operator. More specifically, it helps the operator to have an overview of the optical modules 8 by elevation thereof relative to the walls of the cable, which facilitates for example the selection of those he will derive and allows him to effectively route the optical modules to their point of derivation.
- the housing is so that the cable 7 is centered on the housing. Such centering makes it possible to have an elongated housing, of reduced size.
- the housing comprises one or more cassettes 2 removably mounted on the base 1. Their use is however optional in the context of the invention.
- the operator when the operator will work for example with a cable comprising 900 ⁇ m semi-tight insulation fibers, it can perform a bypass operation with the housing.
- the optical module is simply derived within the housing, the cable 7 to a tube dedicated to the subscriber it is desired to wire.
- the operator is not then obliged to perform a splice.
- the derivation then consists simply in pushing this optical module into a tube up to the subscriber (use of the means 13 for guiding the tube)
- This solution is advantageous in that it does not require an experienced operator, able to perform splicing.
- a splice may be necessary in some cases, and a cassette having dimensions adapted to process an optical module is thus provided in the housing for the operator to perform this operation.
- housings comprising both cassettes for treating fibers with a diameter of 250 ⁇ m from compact tubes or with a semi-tight insulation fiber with a diameter of 900 ⁇ m.
- the housing provides means for fixing the cassettes at each of its ends.
- the cassette or cassettes 2 are therefore removable and allow the operator to perform a splicing operation in case of implementation problem or particular situation.
- cassette or cassettes 2 have the particularity of positioning the splicing of the optical fibers in their center, which contributes to the small bulk of the housing; the cassettes having any size similar to those of the base 1 and a cover 3 of the housing.
- the cable 7 is first opened over a given distance, for example between a few centimeters and ten centimeters, with a specific tool by making a window so as to access the optical modules 8.
- the plate 4 is slid between the cable 7 at its opening and the optical modules 8 which are then on the upper part 41 of the plate 4.
- the cable 7 is then inserted between the positioning means 13, 14 and attached by holding means (Colson type collars) of the housing base, preferably out of the previously opened area.
- the plate 4 is then fixed on the base 1 of the housing by means of the complementary fastening means 5 (for example, studs / cylinders).
- the complementary fastening means 5 for example, studs / cylinders.
- the cable in question is a cable of the type illustrated in D1, namely a permanently accessible cable, an optical module of the cable is taken and drifted at the housing to the subscriber or subscribers.
- a second window in the cable is made downstream of the first window, for example at the level of an upper floor of the building, the optical module is sectioned at the level of this second window.
- the length of the optical module for example twenty or so meters
- the length required for the optical module whose splice or optical fibers are to be spliced is less (1 to 2 meters). Splicing is done with an optical fiber brought from the outside. Once the splicing is done, the assembly is coiled in a cassette 2 adapted to the diameter of the optical module in question.
- the main part 1 is a U-shaped piece having an opening 111 on its upper part 121 to access the optical modules.
- the means 4 for generating an excess length of the optical modules 8 with respect to the axis of the cable consist of a secondary part wedge 4 having a flat bottom 421 and a portion 422 protruding from the flat bottom 421.
- the protruding part 422 makes it possible to push both the previously opened sheath portion and the optical modules towards the opening 111 of the main part 1, and consequently amplifies the opening of the sheath of the cable 7 in a plane substantially parallel to the plane formed by the opening 111 of the workpiece 1 (in other words substantially perpendicular to the pushing direction).
- This stuffing acts to raise the modules as is the case in the first embodiment.
- This overhead facilitates locating and gripping the optical modules to be derived by the operator.
- the protrusion 422 may have different types of shapes (for example a rounded shape with a radius of curvature similar to the radius of the cable, a tip / triangle shape or a rectangular shape), insofar as this shape constrains the optical modules. made accessible by an opening made in the cable sheath to deviate from each other.
- shapes for example a rounded shape with a radius of curvature similar to the radius of the cable, a tip / triangle shape or a rectangular shape
- the main step of the installation process is therefore to make an opening over a given distance of the cable, and to dispose the assembly formed by the remaining sheath of the cable and the modules on the protrusion 422.
- the part 1 is a base including the means 4.
- the means 4 for generating an excess length of the optical modules 8 with respect to the axis of the cable and bringing them to FIG. away from said axis, are formed of at least two retaining elements 411 and 412 of the cable sheath respectively disposed on one of the two longitudinal edges of the first part 1.
- the retaining elements 411 and 412 can face each other.
- optical modules contained in the cable 7 are caused to deviate due to the excess length generated by the positioning of the two sheath portions on the retainers 411 and 412, as shown in Fig. 8.
- optical modules In particular because the length of the optical modules is higher than the length of the housing (the optical modules will tend to bend). This overhead facilitates the identification and gripping optical modules to be derived by the operator.
- the housing may have a length L such that 160 ⁇ L ⁇ 250 mm and a width I such that 30 ⁇ I ⁇ 50 mm ⁇ ioji ⁇ vl ⁇ £ ⁇ fVvLL.i35iliiiil>
- the housing will have a L / l form ratio lower than for the other embodiments, because it requires a minimum width I to properly separate the modules.
- the main part 1 comprises means 13, 14 (not shown in FIG. 7) for positioning the cable, centered on the width of the casing, so that the casing is centered on the cable 7.
- the holding means 6 of the cable disposed at the ends of the main part 1 may comprise roughnesses 6 (not shown in FIGS. 7, 8, preferably integrally formed from the main part 1, to limit the sliding / translation movements of the cable.
- the housing may include one or more cassettes 2 removably mounted on the main part 1, and cassette attachment means at each of its ends.
- the proposed housing is particularly well suited to the type of cable shown in Dl, namely a permanent accessibility cable. Indeed, in this case of massive deployment of optical fibers, permanently accessible wiring solutions generate significant savings. In addition, apart from laying in a straight line, the fact of not splicing upstairs allows the use of less qualified personnel and reduced installation time.
- the proposed housing offers the following advantages:
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0760139A FR2925778B1 (fr) | 2007-12-20 | 2007-12-20 | Boitier de raccordement d'un cable de telecommunication et procede de mise en oeuvre associe. |
PCT/EP2008/068174 WO2009083538A1 (fr) | 2007-12-20 | 2008-12-22 | Boitier de raccordement d ' un cable de telecommunication |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2238491A1 true EP2238491A1 (fr) | 2010-10-13 |
Family
ID=39479771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08866540A Withdrawn EP2238491A1 (fr) | 2007-12-20 | 2008-12-22 | Boitier de raccordement d ' un cable de telecommunication |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2238491A1 (fr) |
FR (1) | FR2925778B1 (fr) |
RU (1) | RU2467363C2 (fr) |
WO (1) | WO2009083538A1 (fr) |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4744622A (en) * | 1986-09-12 | 1988-05-17 | Amp Incorporated | Optical fiber splice case |
US4958903A (en) * | 1988-12-09 | 1990-09-25 | At&T Bell Laboratories | Splice closure |
US5479553A (en) * | 1993-04-19 | 1995-12-26 | Raychem Corporation | Fiber optic splice closure |
GB9400626D0 (en) * | 1994-01-14 | 1994-03-09 | Augat Limited | Management of optical fibres |
FR2734651B1 (fr) * | 1995-05-24 | 1997-06-20 | Alcatel Cable Interface | Boitier de raccordement de fibre optique |
FR2743425B1 (fr) * | 1996-01-10 | 1998-02-06 | Silec Liaisons Elec | Dispositif de raccordement de cables a fibres optiques |
DE29800885U1 (de) * | 1998-01-20 | 1998-03-05 | Rehau Ag + Co, 95111 Rehau | Formteil zum Abdecken von Öffnungen |
US6249632B1 (en) * | 1998-11-12 | 2001-06-19 | Wittmeier, Ii David Arthur | Fiber optic splice closure including end pivoting slack storage holder and associated methods |
US6275640B1 (en) * | 1999-04-21 | 2001-08-14 | Tyco Electrtonics Corporation | Fiber optic splice closure including end pivoting slack storage holder with adjustable rear wall and associated methods |
FR2793890B1 (fr) * | 1999-05-19 | 2002-01-18 | France Telecom | Boitier d'acces a une ou plusieurs fibres optiques dans un cable tendu |
US7359613B2 (en) * | 2005-05-27 | 2008-04-15 | Tyco Electronics Corporation | Optical fiber termination apparatus for taut sheath splicing and method for using the same |
-
2007
- 2007-12-20 FR FR0760139A patent/FR2925778B1/fr active Active
-
2008
- 2008-12-22 WO PCT/EP2008/068174 patent/WO2009083538A1/fr active Application Filing
- 2008-12-22 RU RU2010128083/28A patent/RU2467363C2/ru not_active IP Right Cessation
- 2008-12-22 EP EP08866540A patent/EP2238491A1/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2009083538A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2925778A1 (fr) | 2009-06-26 |
FR2925778B1 (fr) | 2012-11-30 |
RU2010128083A (ru) | 2012-01-27 |
RU2467363C2 (ru) | 2012-11-20 |
WO2009083538A1 (fr) | 2009-07-09 |
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Legal Events
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17Q | First examination report despatched |
Effective date: 20101222 |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ACOME SOCIETE COOPERATIVE ET PARTICIPATIVE SOCIETE |
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Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20160809 |