Joint closure module and box for optical fiber cables

• US 5,071,220 A
• Filed: 04/30/1990
• Issued: 12/10/1991
• Est. Priority Date: 05/11/1989
• Status: Expired due to Term

• Current Assignee: French State Represented By The Minister of Post Telecommunications and Space (Centre National D'Etudes Des Telecommunications
• Original Assignee: ETAT Francais Represente PAR Le Ministre Des Postes et Telecommunications Centre National
• Inventors: Petit, Regis, Ayoul, Gerard, Ruello, Yves
• Primary Examiner(s): Healy, Brian
• Application Number:
  US07/516,074
• Time in Patent Office: 589 Days
• Field of Search: 350/96.20, 350/96.21, 350/96.22, 350/96.23
• US Class Current: 385/135
• CPC Class Codes: G02B 6/4447 with divided shells G02B6/4448 takes precedence
• CPC Class Codes: G02B 6/4452 Distribution frames
• CPC Class Codes: G02B 6/4454 with splices
• CPC Class Codes: G02B 6/4455 characterised by the way of extraction or insertion of the cassette in the distribution frame, e.g. pivoting, sliding, rotating or gliding
• CPC Class Codes: G02B 6/4477 with means for strain-relieving to interior strengths element
• CPC Class Codes: G02B 6/545 Pulling eyes G02B6/475 takes precedence

Abstract

Joint closure modules and boxes for optical fiber cables, also known as splice organizers, the module having a supporting plate demarcating a shielded space of extension of the fiber transfer sections, said supporting plate including, firstly, a set of aligned and separate means for anchoring the external sheath, the peripheral reinforcements and the central strength element, respectively, of each cable and, secondly, at least one fiber coiling and connection cartridge with guided hinging, arranged so as to limit the transfer length and the course of shift of said sections for the transfer of the guided shift of said hinged cartridge.

Claims

1. A joint closure module for optical fiber cables, wherein each cable is notably of the type including, inserted in an external sealing sheath, a plurality of optical fibers held around a central strength element by grooved core or tube and peripheral reinforcement braid supports or rod supports, said module receiving the ends of the cables to be connected to at least one of two opposite access faces, and providing shelter to means for fastening the cable ends, means for spreading the fibers contained in the cables, and cartridges housing reserve coils of fibers and the connecting splices of said connected fibers, this module having a supporting plate demarcating above at least one portion of its surface, a shielded space of extension of the transfer sections of the fibers, said supporting plate including, firstly, a set of aligned and separate means for anchoring the external sheath, the peripheral reinforcements and the central strength element, respectively, of each cable and, secondly, at least one fiber connection (or joining) and coiling cartridge, with guided hinging arranged so as to restrict the transfer length and course of shift of said transfer sections during the guided shifting of said hinged cartridge.

2. A module according to claim 1, comprising at least two adjacent cable entry holes arranged in a plane parallel to the supporting plate of the module, the sets of aligned means for anchoring the cable elements to the supporting plate extending parallel to said supporting plate, substantially in the alignment of said entry holes.

3. A module according to claim 1, wherein the anchoring means of each cable have a spacing between them such that the fibers coming from a cable received on at least one of said entry faces of the module extend directly without coiling, in said shielded space, up to the corresponding connection and coiling cartridge.

4. A module according to claim 1, wherein the hinging means of each fiber coiling and connection cartridge are formed so as to enable a shifting of the cartridge between a first functional position of normal storage of the cartridge in the module and a second maintenance position, with the shifting of the cartridge between the first position and the second position taking place along a single guided course.

5. A module according to claim 4, wherein said single guided course of each cartridge essentially describes a curve of rotation, and wherein the fiber entries in the coiling cartridges are located on the rotation pin side of the cartridge.

6. A module according to claim 5, wherein the course of shift of the cartridge is substantially circular around a rotation pin, substantially parallel to the plane of said supporting plate, said cartridge extending in a plane substantially parallel to the supporting plate of the module in said first position of storage.

7. A module according to claim 4, wherein said supporting plate has at least one set of at least two coiling and connection cartridges, and wherein the cartridges of one and the same set extend in an essentially superimposed way, parallel to the supporting plate, in the first storage position, and are each capable of being shifted towards the second maintenance position so as to clear the access to the lower cartridge of the superimposed assembly.

8. A module according to claim 7, having at least one fixed cartridge.

9. A module according to claim 1, wherein said supporting plate includes substantially vertical lateral shielding cheek plates providing a heightwise demarcation of said shielded space for extension of the fiber transfer sections.

10. A module according to claim 9, wherein said cheek plates are surmounted by a movable hood for closing said shielded space for extension of the fiber transfer sections.

11. A module according to claim 10, wherein said fiber transfer sections between said means for anchoring the elements of the cable and said cartridge entries extend essentially in a straight line in a space demarcated by the supporting plate and the lateral shielding cheek plates.

12. A module according to claim 1, including a space for coiling the optical fibers on that side of the surface of the supporting plate which is opposite the surface for anchoring the elements of the cables.

13. A module according to claim 12, including perforations crossing the fibers from the anchoring surface towards the coiling surface of the supporting plate, said crossing perforations being prepared in such a way as to enable the coiling of the fibers on that side of the access face of the module which is opposite the face for receiving the end of the optical cable corresponding to said fibers.

14. A module according to claim 1, wherein means for receiving the cartridges are laid out on the surface of the supporting plate, opposite the surface for anchoring the elements of the cables.

15. A module according to claim 1, wherein at least some of said means for anchoring the cable elements are formed by studs fixedly joined to the plate, provided with movable means for fixing said elements of the cable by screwing in or other means.

16. A module according to claim 15, wherein the anchoring stud of the central strength element of the cable includes a multiple-position and multiple-calibre for the reception of said central strength element.

17. A module according to claim 6, wherein the means for hinging the cartridge are formed by at least one rocking lever fixedly joined to said cartridge, and mounted rotationally on said supporting plate, said lever cooperating with the temporary fixing means by the snapping in of the cartridge in maintenance position.

18. A joint closure box for optical fiber cables comprising at least one joint closure module according to any one of the claims 1 to 17, inserted between two sealing half-shells.