GB2368139A - Optic fibre splice storage tray stack - Google Patents
Optic fibre splice storage tray stack Download PDFInfo
- Publication number
- GB2368139A GB2368139A GB0025469A GB0025469A GB2368139A GB 2368139 A GB2368139 A GB 2368139A GB 0025469 A GB0025469 A GB 0025469A GB 0025469 A GB0025469 A GB 0025469A GB 2368139 A GB2368139 A GB 2368139A
- Authority
- GB
- United Kingdom
- Prior art keywords
- optical fibre
- tray
- splice storage
- fibre splice
- trays
- 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- Withdrawn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
- 239000000835 fiber Substances 0.000 title description 5
- 239000013307 optical fiber Substances 0.000 claims abstract description 23
- 238000005452 bending Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000000717 retained effect Effects 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
- G02B6/4453—Cassettes
- G02B6/4455—Cassettes characterised by the way of extraction or insertion of the cassette in the distribution frame, e.g. pivoting, sliding, rotating or gliding
-
- 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
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4452—Distribution frames
- G02B6/44526—Panels or rackmounts covering a whole width of the frame or rack
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
An optical fibre splice storage apparatus comprises a base 10 having a plurality of optical fibre cable 12E,12W entry ports 11 and a plurality of optical fibre splice storage trays 14 arranged in a stack and extending in the direction of the through axis of the ports 11. An arcuate slot 19 may be formed at one end of each tray 14 and each tray 14 may be mounted to the base 10 by means of a rod 18 which extends through the arcuate slot 19 of each tray. In use, the trays 14 are slid sideways of the stack through their own plane. The lateral translatory movement of the trays 14 is in a direction perpendicular to the axis. Elongate tubular cap ended cover 13 and splice retainers 17 are shown.
Description
Optical Fibre Splice Storage Apparatus
This invention relates to an optical fibre splice storage apparatus.
It is well known to store splices between the fibres of optical fibre cables in enclosures. Typically, such known enclosures comprise a plurality of trays arranged in a stack, which store the coiled ends of the fibres and the splices therebetween.
In order to gain access to the trays, it has been proposed to pivotally mount them inside the enclosure, such they can be pivoted through their own plane about an axis extending perpendicular thereto.
A disadvantage of the above arrangement is that the trays have to pivot through almost 90 before full access can be gained to the tray. Accordingly, the fibres leading to the trays also have to bend through this amount.
All fibres have a minimum bending radius, through which they can be bent before they are damaged. Thus, in order to prevent damage to the fibres as the trays are pivoted through 90 , a long length of excess fibre has to be provided inside the closure between the cable entry port and the tray. This excess fibre is difficult to store, especially if space inside the enclosure is limited.
Alternatively, in order to provide a sufficient length of fibre, the distance between the cable entry port and the tray is extended. It will be appreciated that this increases the overall size of the enclosure.
Another disadvantage of known enclosures is that the trays can be difficult to pivot through 90'if there are a large number of fibres leading to the tray.
We have now devised an optical fibre splice storage apparatus which alleviates the above-mentioned problems.
In accordance with this invention, there is provided an
optical fibre splice storage apparatus comprising a base having an optical fibre cable entry port and a plurality of optical fibre splice storage trays arranged in a stack and extending in the direction of the through axis of said port, each tray being mounted to the base by a mechanism which allows translatory movement of the tray through its own plane and out of the stack in a direction perpendicular to said axis.
The lateral translatory movement of the tray enables access to the tray to be provided without significant bending of the fibres extending between the cable entry port (s) and the tray. Accordingly, the aforementioned disadvantages of known enclosures are avoided.
Preferably the mechanism is also arranged to displace the tray in the direction of said axis during said translatory movement, so as to generally maintain the overall distance between the tray and the base. In this manner, the fibres are not stretched as the trays are translated.
Preferably each tray is arranged to pivot outwardly through its own plane about an axis extending perpendicular to said axis.
Preferably, the trays are pivoted about a common axis.
Preferably the mechanism comprises an elongate slot which extends across the tray, generally perpendicular to said through axis, and an element on the base which is slidingly received in the slot.
Preferably the slot is arcuate.
Preferably the element comprises a rod which extends through the slot of each tray.
Preferably the trays are detachable from the base.
An embodiment of this invention will now be described by way of example only and with reference to the accompanying drawings, in which:
FIGURE 1 is a bottom view of an optical fibre splice
storage enclosure in accordance with this invention ; FIGURE 2 is a plan view of the enclosure of Figure 1 with the cover removed;
FIGURE 3 is a side view of the enclosure of Figure 1 in direction III, with some parts being shown in section;
FIGURE 4 is a side view of the enclosure of Figure 1 in direction IV, with some parts being shown in section; and
FIGURE 5 is a side view of the enclosure of Figure 1 in direction V, with some parts being omitted for clarity.
Referring to the drawings, there is shown an optical fibre storage apparatus which comprises a circular base portion 10 formed with a plurality of tubular cable entry ports 11 projecting from its underside, through which the pairs of cables 12E, 12W to be spliced together enter and leave the enclosure.
An elongate tubular cap-ended cover 13 is provided for sealingly engaging the base, so as to enclose the splices or joints between the cables 12E, 12W.
The splices or joints are contained within six elongate plastics trays 14 mounted axially of the enclosure in a stack which extends perpendicular to the axis of the enclosure and the outlets 11. The trays 14 are mounted to a support cage 15 which is attached to the base by means of legs 16. The support cage 15 contains the stack of trays 14 on three sides but one side is left open, so that individual trays 14 can be moved through their own plane out of the stack, as will be described hereinafter.
Each tray 14 is generally rectangular in shape and comprises means 17 for retaining the splices. The trays 14 are mounted to the frame by a rod 18 which extends through an elongate slot 19 formed transversely of the bottom end of each tray. The slot 19 in each tray 14 is arcuate and extends from the side edge of the tray, which is directed outwardly of the
open side of the cage 15, in an arc away from the upper end of the tray to a point located intermediate the opposite side edges of the tray.
The mounting rod 18 extends perpendicular to the axis of the enclosure between opposite sides of the cage 15 and is retained in place by circlips 20, which can be removed, so that the rod 18 can be withdrawn during assembly or disassembly of the stack.
In accordance with this invention, the rod 18 is slidably received in the slot 19 of each tray 14, such that the trays 14 can be displaced through their own plane, as shown in
Figure 3, with both a translatory and pivotal movement. In this manner each tray 14 can be moved to a position where all of the splice and fibre retaining elements thereon can be accessed without causing undue bending of the fibres or tubes of fibres 21 extending between the cable entry ports 11 and the trays.
Claims (9)
1. An optical fibre splice storage apparatus comprising a base having an optical fibre cable entry port and a plurality of optical fibre splice storage trays arranged in a stack and extending in the direction of the through axis of said port, each tray being mounted to the base by a mechanism which allows translatory movement of the tray through its own plane and out of the stack in a direction perpendicular to said axis.
2. An optical fibre splice storage apparatus as claimed in claim 1, in which the mechanism is also arranged to displace the tray in the direction of said axis during said translatory movement.
3. An optical fibre splice storage apparatus as claimed in claims 1 or 2, in which each tray is arranged to pivot outwardly through its own plane about an axis extending perpendicular to said axis.
4. An optical fibre splice storage apparatus as claimed in claim 3, in which the trays are pivoted about a common axis.
5. An optical fibre splice storage apparatus as claimed in any preceding claim, in which the mechanism comprises an elongate slot which extends across the tray and an element on the base which is slidingly received in the slot.
6. An optical fibre splice storage apparatus as claimed in claim 5, in which the slot is arcuate
7. An optical fibre splice storage apparatus as claimed in claims 5 or 6, in which the element comprises a rod which extends through the slot of each tray
8. An optical fibre splice storage apparatus as claimed in any preceding claim, in which the trays are detachable from the base.
9. An optical fibre splice storage substantially as herein described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0025469A GB2368139A (en) | 2000-10-17 | 2000-10-17 | Optic fibre splice storage tray stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0025469A GB2368139A (en) | 2000-10-17 | 2000-10-17 | Optic fibre splice storage tray stack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0025469D0 GB0025469D0 (en) | 2000-11-29 |
| GB2368139A true GB2368139A (en) | 2002-04-24 |
Family
ID=9901487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0025469A Withdrawn GB2368139A (en) | 2000-10-17 | 2000-10-17 | Optic fibre splice storage tray stack |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2368139A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006025926A1 (en) * | 2004-08-26 | 2006-03-09 | 3M Innovative Properties Company | Telecommunications cable enclosure |
| US7256349B2 (en) | 2004-08-11 | 2007-08-14 | 3M Innovative Properties Company | Telecommunications cable enclosure |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0222691A2 (en) * | 1985-11-12 | 1987-05-20 | KRONE Aktiengesellschaft | Device for the preservation of the fibres of glass fibre cables in the distribution assemblies of a telecommunication network |
| US4948220A (en) * | 1988-06-20 | 1990-08-14 | Societe Anonyme De Telecommunications | Module for distributing and connecting optical fibers |
| EP0585658A1 (en) * | 1992-09-04 | 1994-03-09 | KRONE Aktiengesellschaft | Device for the preservation of fibres and bundles of fiber optique cables in distribution assemblies of telecommunication and data networks |
| WO1995002203A1 (en) * | 1993-07-08 | 1995-01-19 | Walter Rose Gmbh & Co. Kg | A multi-filament splice enclosure |
| WO1995010059A1 (en) * | 1993-10-06 | 1995-04-13 | Walter Rose Gmbh & Co Kg | Device for receiving splice cassettes for optical waveguides, especially in cable sleeves |
| US5596670A (en) * | 1993-12-09 | 1997-01-21 | Northern Telecom Limited | Optical fiber cable enclosure |
| GB2307563A (en) * | 1995-11-22 | 1997-05-28 | Bowthorpe Plc | Optic fibre splice enclosures and storage trays |
| US5778131A (en) * | 1993-09-29 | 1998-07-07 | Pirelli General Plc | Assembly for use in connecting optical fibres including a manifold device |
| EP0883004A1 (en) * | 1997-06-03 | 1998-12-09 | Siemens Aktiengesellschaft | Cassette system for cable coupling boxes or distribution frames |
-
2000
- 2000-10-17 GB GB0025469A patent/GB2368139A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0222691A2 (en) * | 1985-11-12 | 1987-05-20 | KRONE Aktiengesellschaft | Device for the preservation of the fibres of glass fibre cables in the distribution assemblies of a telecommunication network |
| US4948220A (en) * | 1988-06-20 | 1990-08-14 | Societe Anonyme De Telecommunications | Module for distributing and connecting optical fibers |
| EP0585658A1 (en) * | 1992-09-04 | 1994-03-09 | KRONE Aktiengesellschaft | Device for the preservation of fibres and bundles of fiber optique cables in distribution assemblies of telecommunication and data networks |
| WO1995002203A1 (en) * | 1993-07-08 | 1995-01-19 | Walter Rose Gmbh & Co. Kg | A multi-filament splice enclosure |
| US5778131A (en) * | 1993-09-29 | 1998-07-07 | Pirelli General Plc | Assembly for use in connecting optical fibres including a manifold device |
| WO1995010059A1 (en) * | 1993-10-06 | 1995-04-13 | Walter Rose Gmbh & Co Kg | Device for receiving splice cassettes for optical waveguides, especially in cable sleeves |
| US5596670A (en) * | 1993-12-09 | 1997-01-21 | Northern Telecom Limited | Optical fiber cable enclosure |
| GB2307563A (en) * | 1995-11-22 | 1997-05-28 | Bowthorpe Plc | Optic fibre splice enclosures and storage trays |
| EP0883004A1 (en) * | 1997-06-03 | 1998-12-09 | Siemens Aktiengesellschaft | Cassette system for cable coupling boxes or distribution frames |
Non-Patent Citations (1)
| Title |
|---|
| FR2678076A * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7256349B2 (en) | 2004-08-11 | 2007-08-14 | 3M Innovative Properties Company | Telecommunications cable enclosure |
| US7268299B2 (en) | 2004-08-11 | 2007-09-11 | 3M Innovative Properties Company | Telecommunications cable enclosure |
| US7598457B2 (en) | 2004-08-11 | 2009-10-06 | 3M Innovative Properties Company | Telecommunications cable enclosure |
| US8071879B2 (en) | 2004-08-11 | 2011-12-06 | 3M Innovative Properties Company | Telecommunications cable enclosure |
| WO2006025926A1 (en) * | 2004-08-26 | 2006-03-09 | 3M Innovative Properties Company | Telecommunications cable enclosure |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0025469D0 (en) | 2000-11-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |