Splice box for optical wave guide

• US 5,142,607 A
• Filed: 03/19/1991
• Issued: 08/25/1992
• Est. Priority Date: 03/20/1990
• Status: Expired due to Fees

• Current Assignee: Rittal-Werk Rudolf Loh Gmbh & Co. Kg
• Original Assignee: Rittal-Werk Rudolf Loh Gmbh & Co. Kg
• Inventors: Petrotta, Gianmaria, Besserer, Horst
• Primary Examiner(s): Lee, John D.
• Application Number:
  US07/671,399
• Time in Patent Office: 525 Days
• Field of Search: 350/96.10, 350/96.15, 350/96.20, 350/96.21, 350/96.22, 350/96.23, 385/135
• US Class Current: 385/135
• CPC Class Codes: G02B 6/444 Systems or boxes with surplus lengths
• 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

Abstract

An optical wave guide splice box which can be installed in a control box or the like and which receives optical wave guide splicing cassettes. Incoming optical wave guide cables are split into optical wave guide fiber bundles and/or individual optical wave guide fibers and are connected in optical wave guide harnesses with outgoing individual optical wave guide fibers. At least a portion of the outgoing individual optical wave guide fibers are guided and connected to optical wave guide connectors in a front panel which closes off the optical wave guide splice box. Shunting, splicing and distribution of the optical wave guide exterior cables, the optical wave guide fiber bundles and the individual optical wave guide fibers is considerably easier, even in an optical wave guide splice box installed in a control box or the like. An optical wave guide splice pull, open towards the front and the top is extendably installed with at least two-section telescopic pulls in a component support which can be installed in the control box or the like. The front panel with the optical wave guide connectors is pivotally hinged in an area of the front lower edge of the optical wave guide splice pull and can be fastened in a closed position on the optical wave guide splice pull with releasable locking elements.

Claims

1. In a splice box for an optical wave guide, the splice box being installed in a control box and the splice box being telescopically extendable with a telescopic pull, the splice box receiving at least one optical wave guide splicing cassette, in which a plurality of incoming optical wave guide cables are split into at least one of optical wave guide fiber bundles and individual optical wave guide fibers and which are connected in optical wave guide harnesses with outgoing individual optical wave guide fibers, at least a portion of the outgoing individual optical wave guide fibers are guided and connected to optical wave guide connectors in a front panel which closes off the optical wave guide splice box, the improvement comprising:

the optical wave guide splice box constructed as an optical wave guide splice pull (20) having an open front and an open top, a plurality of at least two-section telescopic pulls (22.1;

22.2) attached in a component support (10) which is open towards a front of said component support (10) and comprises a bottom wall (11), two side walls (16,

     17) and an at least partially open back wall (18), said side walls (16,

     17) having a plurality of fastening angle irons (14,

     15) in an area of front vertical edges of said component support (10), said fastening angle irons (14,

     15) being directed away from said component support (10);

a plurality of optical wave guide connectors (28) attached to said front panel (26), said front panel (26) pivotally hinged at a front lower edge of said optical wave guide splice pull (20), releasable locking means (29,

     30) for fastening said front panel (26) with respect to said optical wave guide splice pull (20); and

a plurality of optical wave guide splicing cassettes (34) fastenable on top of each other and positioned on an intermediate bottom wall (23) of said optical wave guide splice pull (20), said intermediate bottom wall (23) mounted at a distance from said bottom wall (11) of said optical wave guide splice pull (20), and said intermediate bottom wall (23) and said bottom wall (10) forming a storage shelf (25).

2. An optical wave guide splice box in accordance with claim 1, wherein said front panel (26) includes a hole (45) and said storage shelf (25) is accessible through said hole (45).

3. An optical wave guide splice box in accordance with claim 2, wherein said side walls (16, 17) of said component support (10) are connected with each other by a plurality of cross supports (12, 13) attached between a front horizontal upper edge and a back horizontal edge of each said side wall (16, 17).

4. An optical wave guide splice box in accordance with claim 3, wherein a back wall (35) of said optical wave guide splice pull (20) has at least one circular hole (36) through which incoming optical wave guide exterior cables (37) can be routed and secured free of tension with a plurality of screw fasteners (38).

5. An optical wave guide splice box in accordance with claim 4, wherein said back wall (35) of said optical wave guide splice pull (20) is beveled along a back wall horizontal upper edge in a direction towards a front of said optical wave guide splice pull (20) to form a fastening flange (42) having fastening bores for accommodating a plurality of fastening clamps (43).

6. An optical wave guide splice box in accordance with claim 5, wherein a plurality of cassette holder brackets (31) each having a threaded bolt (32) are secured to said intermediate bottom wall (23) of said optical wave guide splice pull (20), each said cassette holder bracket (31) able to receive said optical wave guide splicing cassettes (34) positioned on top of each other, and a threaded bolt (32) secured to each said cassette holder bracket (31) and mateable with a knurled nut (33) for fixing said optical wave guide splicing cassettes (34) on said cassette holder brackets (31).

7. An optical wave guide splice box in accordance with claim 6, wherein outside of said optical wave guide splicing cassettes (34) a plurality of cable clamps (44) are secured to said intermediate bottom wall (23) of said optical wave guide splice pull (20), in which one of optical wave guide fiber bundles and individual optical wave guide fibers can be fixed.

8. An optical wave guide splice box in accordance with claim 7, wherein a front vertical edge of each of two side walls (21) of said optical wave guide splice pull (20) has a flange (46) beveled towards an inside of said optical wave guide splice pull (20), said front panel (26) is fastened to said flanges (46) with hinges, and said releasable locking means comprises said flanges (46) having a plurality of receivers (29) for correspondingly engaging a plurality of locking elements (30) which are rotatably fixed in said front panel (26).

9. An optical wave guide splice box in accordance with claim 1, wherein said side walls (16, 17) of said component support (10) are connected with each other by a plurality of cross supports (12, 13) attached between a front horizontal upper edge and a back horizontal edge of each said side wall (16, 17).

10. An optical wave guide splice box in accordance with claim 1, wherein a back wall (35) of said optical wave guide splice pull (20) has at least one circular hole (36) through which incoming optical wave guide exterior cables (37) can be routed and secured free of tension with a plurality of screw fasteners (38).

11. An optical wave guide splice box in accordance with claim 10, wherein said back wall (35) of said optical wave guide splice pull (20) is beveled along a back wall horizontal upper edge in a direction towards a front of said optical wave guide splice pull (20) to form a fastening flange (42) having fastening bores for accommodating a plurality of fastening clamps (43).

12. An optical wave guide splice box in accordance with claim 1, wherein a plurality of cassette holder brackets (31) each having a threaded bolt (32) are secured to said intermediate bottom wall (23) of said optical wave guide splice pull (20), each said cassette holder bracket (31) able to receive said optical wave guide splicing cassettes (34) positioned on top of each other, and a threaded bolt (32) secured to each said cassette holder bracket (31) and mateable with a knurled nut (33) for fixing said optical wave guide splicing cassettes (34) on said cassette holder brackets (31).

13. An optical wave guide splice box in accordance with claim 1, wherein outside of said optical wave guide splicing cassettes (34) a plurality of cable clamps (44) are secured to said intermediate bottom wall (23) of said optical wave guide splice pull (20), in which one of optical wave guide fiber bundles and individual optical wave guide fibers can be fixed.

14. An optical wave guide splice box in accordance with claim 1, wherein a front vertical edge of each of two side walls (21) of said optical wave guide splice pull (20) has a flange (46) beveled towards an inside of said optical wave guide splice pull (20), aid front panel (26) is fastened to said flanges (46) with hinges, and said releasable locking means comprises said flanges (46) having a plurality of receivers (29) for correspondingly engaging a plurality of locking elements (30) which are rotatably fixed in said front panel (26).