GB2277812A - Underground container for optical cables and connector - Google Patents
Underground container for optical cables and connector Download PDFInfo
- Publication number
- GB2277812A GB2277812A GB9408992A GB9408992A GB2277812A GB 2277812 A GB2277812 A GB 2277812A GB 9408992 A GB9408992 A GB 9408992A GB 9408992 A GB9408992 A GB 9408992A GB 2277812 A GB2277812 A GB 2277812A
- Authority
- GB
- United Kingdom
- Prior art keywords
- container
- cable
- connection module
- cables
- connection
- 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.)
- Granted
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
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
- G02B6/501—Underground or underwater installation; Installation through tubing, conduits or ducts underground installation of connection 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
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4441—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
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
Abstract
An underground container 1 has a vertically disposed connection module 21 which receives cables 7 to be connected, which are wound in a helix around the module. The cables are movably laid through cable inlet sockets 5 and the module 21 is sealed. <IMAGE>
Description
APPARATUS FOR UNDERGROUND CONNECTION OF OPTICAL CABLES
The present invention relates to an apparatus for underground connection of optical cables. In particular, the invention concerns connectors in an optical fibre or waveguide network. Such a network typically comprises splicing cartridges or adaptors for making connections between optical fibres, for example.
These adaptors are conventionally disposed in sockets buried underground or in a manhole. If laid underground, however, it is difficult to dig out the socket for alterations or repair work.
German Patent No. P41 40 701.6 discloses an underground container comprising a holder for the cassettes or other connecting elements. The cables or fibres to be connected are laid in a circle around the holder, which can therefore be pulled out upwards, since a sufficient reserve of connecting cable is available. This construction is complicated by the need to seal the underground container. In the case of some kinds of soil, there is a risk that the underground container will sink, resulting in unacceptable stresses or even a break in the cable.
According to the present invention there is provided apparatus for underground connection of optical cables, comprising:
a container, for location underground, the container having at least one inlet for the passage of cables into the container; and
a connection module adapted to be received within the container and having an internal volume, the connection module having at least one sealed inlet for the passage of the cables into the internal volume of the module.
Because the connection module has a sealed inlet for the cable, the container according to the apparatus of the invention does not need to be sealed underground. The casing is therefore cheaper to manufacture.
Preferably, the connection module comprises a sleeve. The apparatus according to the invention can be put into effect using conventional sleeves.
Preferably, the sleeve is positioned substantially vertically within the container, and the connection module is adapted to receive the cable from above.
The connection module may further comprise retaining means for positioning and securing the connection module within the container. The retaining means may comprise a clip which is engageable with a support provided within the container. This clip may be used for raising or lowering the connection module out of or into the container.
Preferably, the connection module has a guide member for guiding a cable to the sealed inlet. The guide member may comprise a curved member to which the respective cable is fastened, the guide member having a minimum radius which is greater than a desired minimum radius of curvature of the cable. This prevents excessive bending of the cable.
The guide member may be rotatably mounted on a base member within the container, such that the guide member may be operated to rotate the connection module within the container. Preferably, the first and second inlets of the container are adapted to receive slidably the respective cables. This gives rise to the advantage that the cables can be guided in a movable manner through the apparatus. If the underground container sinks, a sufficient reserve length is available to prevent any stresses occurring in the cable. Resilient cable inlet pipes may also be provided as an additional means of preventing the cable from snapping.
The connection module of the apparatus according to the application can be completely removed from the underground container and placed alongside the container, thus facilitating assembly and repair work.
The invention also provides a connection unit for optical cables comprising a connection apparatus according to the invention and a cable, the cable being wound around the connection module within the container, and being slidably received within one of the first and second inlets. Preferably, an excess length of cable is stored within the container to enable the connection module to be removed from the container without disconnecting the cable from the connection module.
For a better understanding of the present invention and to show more clearly how it may be carried into effect, reference will now be made, by way of example, to the accompanying drawings, in which:
Figures 1 is a sectional view of an underground container according to the invention, comprising a connection module;
Figure 2 shows the underground container of Figure 1 when the connection module has been removed;
Figure 3 shows the connection module, placed on an assembly device;
Figure 4 shows a variant of the connection module with a rotary device, and
Figure 5 shows the container of Figure 4, from above.
Fig. 1 shows an underground container 1 sealed at the top by a cover 4. The underground container 1 is disposed in an annular receiving ring 2 which is closed at ground level by a circular manhole cover 3.
Alternatively, of course, the ring and associated manhole cover can be square or rectangular or any other shape. Access to the underground container 1 can be obtained at any time by removing the manhole cover 3.
The container does not, however, need to be separately sealed if a sealed connection module is used and the cable inlets into the module are also sealed.
The module is in the form of a casing 21, which is used for holding connecting components for the optical cables such as splicing or coupling cassettes. The cables 7 to be connected in the module are guided through resilient cable inlet pipes 25 which are inserted into and retained by cable inlet nozzles 5 in the underground container. The cables are movable in the cable inlet pipes, and can be protected from dirt by, for example, a bushing seal of expanded material or a wide-meshed fabric 26.
The cables 7 are laid in a circle or helix around the casing 21 and are introduced into the upper part thereof. The cable guidance can be tangential or directly from above if, as shown in Fig. 1, a conventional sleeve is used as the casing 21. After the cable or cables to be connected in the module have been assembled, a reserve length is laid around the casing 21. The cable can be wound by rotating the casing, using a handle in the form of a retaining clip 22. The retaining clip is suspended from a retaining ring 23, thus ensuring that the connection module is firmly secured, above the base of the container 1. By means of the retaining clip 22, the connection module can easily be lifted out of the underground container 1 (Fig. 2) and laid on a suitable assembly device 29 (Fig. 3). To avoid unacceptable bending, the cable to be connected is unrolled by rotating the module 21.
Work outside the underground container can conveniently be carried out on the assembly device. After closure of the module 21, with the cable connections inside, the module 21 is rotated so as to wind the cable around it, and lowered into the underground container. The module is further rotated until the excess length of cable is stacked in a number of circular loops without touching the inside of the manhole.
As shown in the Figures, the module 21 has a guide member 24 to which the cable or cables are fastened.
The member 24 guides the cable or cables to the inlet of the module 21 and ensures that the cable has a minimum radius of curvature, or bending radius, to prevent damage to the cable.
In Fig. 4, the curved guide member 24 of the module is provided with a support arm 28 which engages in a receiving sleeve 27, which sleeve 27 forms part of the underground container. The support arm 28 is inserted into the receiving sleeve 27 and the connecting cable is wound up by rotating the arm 28 relatively to the sleeve 27 until it can be lowered together with the module 21. The centre of rotation can be positioned directly above the module, by using pivotable rotary devices for raising and lowering the connection module.
Fig. 5 is a plan view of an open underground container and a connection module in the form of a casing 21 disposed therein. Fig. 5 shows the shape of the curved guide member 24, and the arrangement of the other components of the apparatus.
Claims (13)
1. Apparatus for underground connection of optical cables, comprising:
a container, for location underground, the container having at least one inlet for the passage of cables into the container; and
a connection module adapted to be received within the container and having an internal volume, the connection module having at least one sealed inlet for the passage of the cables into the internal volume of the module.
2. Apparatus as claimed in claim 1, in which the connection module comprises a sleeve.
3. Apparatus as claimed in claim 2, in which the sleeve is positioned substantially vertically within the container.
4. Apparatus as claimed in claim 3, in which the connection module is adapted to receive at least one cable from above.
5. Apparatus as claimed in any preceding claim, in which the connection module further comprises retaining means for positioning and securing the connection module within the container.
6. Apparatus as claimed in claim 5, in which the retaining means comprises a clip which is engageable with a support provided within the container.
7. Apparatus as claimed in any preceding claim, in which the connection module further comprises a guide member for guiding a cable to the sealed inlet.
8. Apparatus as claimed in claim 7, in which the guide member comprises a curved member to which the respective cable is fastened, the guide member having a minimum radius which is greater than a desired minimum radius of curvature of the cable.
9. Apparatus as claimed in any preceding claim, in which the guide member is rotatably mounted on a base member within the container, such that the guide member may be operated to rotate the connection module within the container.
10. Apparatus as claimed in any preceding claim, in which the first and second inlets of the container are adapted to receive slidably the respective cables.
11. A connection unit for optical cables comprising apparatus as claimed in any preceding claim and a cable, the cable being wound around the connection module within the container, and being slidably received within the sealed inlet.
12. A connection unit as claimed in claim 11, in which an excess length of cable is stored within the container to enable the connection module to be removed from the container without disconnecting the cable from the connection module.
13. Apparatus for underground connection of optical cables substantially as described herein, with reference to and as shown in Figures 1 to 3 or Figures 4 and 5 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4315275A DE4315275C2 (en) | 1991-12-10 | 1993-05-07 | Underfloor container with removable connection housing |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9408992D0 GB9408992D0 (en) | 1994-06-22 |
| GB2277812A true GB2277812A (en) | 1994-11-09 |
| GB2277812B GB2277812B (en) | 1997-01-08 |
Family
ID=6487514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9408992A Expired - Fee Related GB2277812B (en) | 1993-05-07 | 1994-05-06 | Underground container means for optical cables and connection module |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2277812B (en) |
Cited By (44)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2295462A (en) * | 1994-11-28 | 1996-05-29 | Siemens Ag | Cable sleeve arrangement for use in cable shafts |
| EP0725468A1 (en) * | 1995-02-02 | 1996-08-07 | France Telecom | Connection box for optical fibres |
| WO1997026574A2 (en) * | 1996-01-17 | 1997-07-24 | Siemens Aktiengesellschaft | Cable joint for optical fibres with splicing cassettes and overlength loops |
| US6426462B1 (en) | 1999-03-19 | 2002-07-30 | France Telecom | Device for the connection of a multiple-tube structure and method of access to this device |
| NL1017454C2 (en) * | 2001-02-27 | 2002-08-29 | Koninkl Kpn Nv | Cable routing device. |
| GB2409289A (en) * | 2003-12-15 | 2005-06-22 | Weatherford Lamb | Feedthrough optical waveguide strain relief |
| US20110262096A1 (en) * | 2010-04-23 | 2011-10-27 | Grzegorz Fabrykowski | Fiber optic distribution device |
| FR2960120A1 (en) * | 2010-05-14 | 2011-11-18 | Acome | Workstation device for intervention in drawing pit that receives optical cable i.e. optical telecommunication cable, has connection unit connecting box support with chassis and authorizing positioning of box support inside drawing pit |
| US20120170898A1 (en) * | 2004-06-22 | 2012-07-05 | Welldynamics, B.V. | Fiber optic splice housing and integral dry mate connector system |
| US8538226B2 (en) | 2009-05-21 | 2013-09-17 | Corning Cable Systems Llc | Fiber optic equipment guides and rails configured with stopping position(s), and related equipment and methods |
| US8593828B2 (en) | 2010-02-04 | 2013-11-26 | Corning Cable Systems Llc | Communications equipment housings, assemblies, and related alignment features and methods |
| US8625950B2 (en) | 2009-12-18 | 2014-01-07 | Corning Cable Systems Llc | Rotary locking apparatus for fiber optic equipment trays and related methods |
| US8660397B2 (en) | 2010-04-30 | 2014-02-25 | Corning Cable Systems Llc | Multi-layer module |
| US8662760B2 (en) | 2010-10-29 | 2014-03-04 | Corning Cable Systems Llc | Fiber optic connector employing optical fiber guide member |
| US8699838B2 (en) | 2009-05-14 | 2014-04-15 | Ccs Technology, Inc. | Fiber optic furcation module |
| US8705926B2 (en) | 2010-04-30 | 2014-04-22 | Corning Optical Communications LLC | Fiber optic housings having a removable top, and related components and methods |
| US8712206B2 (en) | 2009-06-19 | 2014-04-29 | Corning Cable Systems Llc | High-density fiber optic modules and module housings and related equipment |
| US8718436B2 (en) | 2010-08-30 | 2014-05-06 | Corning Cable Systems Llc | Methods, apparatuses for providing secure fiber optic connections |
| US8879881B2 (en) | 2010-04-30 | 2014-11-04 | Corning Cable Systems Llc | Rotatable routing guide and assembly |
| US8913866B2 (en) | 2010-03-26 | 2014-12-16 | Corning Cable Systems Llc | Movable adapter panel |
| US8953924B2 (en) | 2011-09-02 | 2015-02-10 | Corning Cable Systems Llc | Removable strain relief brackets for securing fiber optic cables and/or optical fibers to fiber optic equipment, and related assemblies and methods |
| US8965168B2 (en) | 2010-04-30 | 2015-02-24 | Corning Cable Systems Llc | Fiber management devices for fiber optic housings, and related components and methods |
| US8985862B2 (en) | 2013-02-28 | 2015-03-24 | Corning Cable Systems Llc | High-density multi-fiber adapter housings |
| US8989547B2 (en) | 2011-06-30 | 2015-03-24 | Corning Cable Systems Llc | Fiber optic equipment assemblies employing non-U-width-sized housings and related methods |
| US8995812B2 (en) | 2012-10-26 | 2015-03-31 | Ccs Technology, Inc. | Fiber optic management unit and fiber optic distribution device |
| US9008485B2 (en) | 2011-05-09 | 2015-04-14 | Corning Cable Systems Llc | Attachment mechanisms employed to attach a rear housing section to a fiber optic housing, and related assemblies and methods |
| US9020320B2 (en) | 2008-08-29 | 2015-04-28 | Corning Cable Systems Llc | High density and bandwidth fiber optic apparatuses and related equipment and methods |
| US9022814B2 (en) | 2010-04-16 | 2015-05-05 | Ccs Technology, Inc. | Sealing and strain relief device for data cables |
| US9042702B2 (en) | 2012-09-18 | 2015-05-26 | Corning Cable Systems Llc | Platforms and systems for fiber optic cable attachment |
| US9038832B2 (en) | 2011-11-30 | 2015-05-26 | Corning Cable Systems Llc | Adapter panel support assembly |
| US9059578B2 (en) | 2009-02-24 | 2015-06-16 | Ccs Technology, Inc. | Holding device for a cable or an assembly for use with a cable |
| US9075217B2 (en) | 2010-04-30 | 2015-07-07 | Corning Cable Systems Llc | Apparatuses and related components and methods for expanding capacity of fiber optic housings |
| US9116324B2 (en) | 2010-10-29 | 2015-08-25 | Corning Cable Systems Llc | Stacked fiber optic modules and fiber optic equipment configured to support stacked fiber optic modules |
| US9213161B2 (en) | 2010-11-05 | 2015-12-15 | Corning Cable Systems Llc | Fiber body holder and strain relief device |
| US9250409B2 (en) | 2012-07-02 | 2016-02-02 | Corning Cable Systems Llc | Fiber-optic-module trays and drawers for fiber-optic equipment |
| US9279951B2 (en) | 2010-10-27 | 2016-03-08 | Corning Cable Systems Llc | Fiber optic module for limited space applications having a partially sealed module sub-assembly |
| US9519118B2 (en) | 2010-04-30 | 2016-12-13 | Corning Optical Communications LLC | Removable fiber management sections for fiber optic housings, and related components and methods |
| US9632270B2 (en) | 2010-04-30 | 2017-04-25 | Corning Optical Communications LLC | Fiber optic housings configured for tool-less assembly, and related components and methods |
| US9645317B2 (en) | 2011-02-02 | 2017-05-09 | Corning Optical Communications LLC | Optical backplane extension modules, and related assemblies suitable for establishing optical connections to information processing modules disposed in equipment racks |
| US9720195B2 (en) | 2010-04-30 | 2017-08-01 | Corning Optical Communications LLC | Apparatuses and related components and methods for attachment and release of fiber optic housings to and from an equipment rack |
| US10094996B2 (en) | 2008-08-29 | 2018-10-09 | Corning Optical Communications, Llc | Independently translatable modules and fiber optic equipment trays in fiber optic equipment |
| NL2021983B1 (en) * | 2018-11-12 | 2020-05-15 | Wavin Bv | Datacable manhole |
| US11294135B2 (en) | 2008-08-29 | 2022-04-05 | Corning Optical Communications LLC | High density and bandwidth fiber optic apparatuses and related equipment and methods |
| EP4010953A4 (en) * | 2019-08-06 | 2023-08-16 | Smart Locking Logic (Pty) Ltd | A cable management system and assembly |
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| WO1991007680A2 (en) * | 1989-11-21 | 1991-05-30 | Raynet Corporation | Telecommunication closures |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5189723A (en) * | 1992-01-06 | 1993-02-23 | Adc Telecommunications, Inc. | Below ground cross-connect/splice sytem (BGX) |
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- 1994-05-06 GB GB9408992A patent/GB2277812B/en not_active Expired - Fee Related
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| US4709980A (en) * | 1985-08-02 | 1987-12-01 | Coastal Engineered Products Company, Inc. | Buried-cable junction enclosure with cable-storage vault |
| WO1990008336A1 (en) * | 1989-01-17 | 1990-07-26 | N.V. Raychem S.A. | Splice case for optical fibre cable |
| WO1991007680A2 (en) * | 1989-11-21 | 1991-05-30 | Raynet Corporation | Telecommunication closures |
Cited By (80)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2295462B (en) * | 1994-11-28 | 1998-04-08 | Siemens Ag | Cable sleeve arrangement for use in cable shafts |
| GB2295462A (en) * | 1994-11-28 | 1996-05-29 | Siemens Ag | Cable sleeve arrangement for use in cable shafts |
| EP0725468A1 (en) * | 1995-02-02 | 1996-08-07 | France Telecom | Connection box for optical fibres |
| FR2730319A1 (en) * | 1995-02-02 | 1996-08-09 | Caudrelier Jacques | FIBER OPTIC SPLICE BOX |
| US5657412A (en) * | 1995-02-02 | 1997-08-12 | France Telecom, Establissement Autonome De Droit Public | Splice case for fibre optic cables |
| US6829424B1 (en) | 1996-01-17 | 2004-12-07 | Ccs Technology, Inc. | Cable joint for optical fibers with splicing cassettes and overlength loops |
| WO1997026574A3 (en) * | 1996-01-17 | 1997-10-16 | Siemens Ag | Cable joint for optical fibres with splicing cassettes and overlength loops |
| WO1997026574A2 (en) * | 1996-01-17 | 1997-07-24 | Siemens Aktiengesellschaft | Cable joint for optical fibres with splicing cassettes and overlength loops |
| US6426462B1 (en) | 1999-03-19 | 2002-07-30 | France Telecom | Device for the connection of a multiple-tube structure and method of access to this device |
| WO2002069468A1 (en) * | 2001-02-27 | 2002-09-06 | Koninklijke Kpn N.V. | Cable connection apparatus |
| US6869296B2 (en) | 2001-02-27 | 2005-03-22 | Koninklijke Kpn N.V. | Cable connection apparatus |
| NL1017454C2 (en) * | 2001-02-27 | 2002-08-29 | Koninkl Kpn Nv | Cable routing device. |
| GB2409289A (en) * | 2003-12-15 | 2005-06-22 | Weatherford Lamb | Feedthrough optical waveguide strain relief |
| GB2409289B (en) * | 2003-12-15 | 2007-06-06 | Weatherford Lamb | Feedthrough fibre strain relief |
| US7373072B2 (en) | 2003-12-15 | 2008-05-13 | Weatherford/Lamb, Inc. | Feedthrough fiber strain relief |
| US8757891B2 (en) * | 2004-06-22 | 2014-06-24 | Welldynamics, B.V. | Fiber optic splice housing and integral dry mate connector system |
| US8550721B2 (en) | 2004-06-22 | 2013-10-08 | Welldynamics, B.V. | Fiber optic splice housing and integral dry mate connector system |
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| US9059578B2 (en) | 2009-02-24 | 2015-06-16 | Ccs Technology, Inc. | Holding device for a cable or an assembly for use with a cable |
| US8699838B2 (en) | 2009-05-14 | 2014-04-15 | Ccs Technology, Inc. | Fiber optic furcation module |
| US8538226B2 (en) | 2009-05-21 | 2013-09-17 | Corning Cable Systems Llc | Fiber optic equipment guides and rails configured with stopping position(s), and related equipment and methods |
| US9075216B2 (en) | 2009-05-21 | 2015-07-07 | Corning Cable Systems Llc | Fiber optic housings configured to accommodate fiber optic modules/cassettes and fiber optic panels, and related components and methods |
| US8712206B2 (en) | 2009-06-19 | 2014-04-29 | Corning Cable Systems Llc | High-density fiber optic modules and module housings and related equipment |
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| US8593828B2 (en) | 2010-02-04 | 2013-11-26 | Corning Cable Systems Llc | Communications equipment housings, assemblies, and related alignment features and methods |
| US8913866B2 (en) | 2010-03-26 | 2014-12-16 | Corning Cable Systems Llc | Movable adapter panel |
| US9022814B2 (en) | 2010-04-16 | 2015-05-05 | Ccs Technology, Inc. | Sealing and strain relief device for data cables |
| US20110262096A1 (en) * | 2010-04-23 | 2011-10-27 | Grzegorz Fabrykowski | Fiber optic distribution device |
| US8542973B2 (en) * | 2010-04-23 | 2013-09-24 | Ccs Technology, Inc. | Fiber optic distribution device |
| US8660397B2 (en) | 2010-04-30 | 2014-02-25 | Corning Cable Systems Llc | Multi-layer module |
| US9519118B2 (en) | 2010-04-30 | 2016-12-13 | Corning Optical Communications LLC | Removable fiber management sections for fiber optic housings, and related components and methods |
| US9632270B2 (en) | 2010-04-30 | 2017-04-25 | Corning Optical Communications LLC | Fiber optic housings configured for tool-less assembly, and related components and methods |
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| NL2021983B1 (en) * | 2018-11-12 | 2020-05-15 | Wavin Bv | Datacable manhole |
| WO2020101482A1 (en) * | 2018-11-12 | 2020-05-22 | Wavin B.V. | Datacable manhole |
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Also Published As
| Publication number | Publication date |
|---|---|
| GB9408992D0 (en) | 1994-06-22 |
| GB2277812B (en) | 1997-01-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20010506 |