Transceiver module support apparatus with fiber management features

• US 5,740,300 A
• Filed: 05/01/1996
• Issued: 04/14/1998
• Est. Priority Date: 05/01/1996
• Status: Expired due to Term

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Scientific-Atlanta Incorporated (Cisco Systems, Inc.)
• Inventors: Hodge, Ronald L.
• Primary Examiner(s): Healy, Brian
• Application Number:
  US08/640,707
• Time in Patent Office: 713 Days
• Field of Search: 385/134, 385/135, 385/136, 385/88, 385/89, 385/92, 385/93
• US Class Current: 385/135
• CPC Class Codes: G02B 6/4452 Distribution frames
• CPC Class Codes: G02B 6/44526 Panels or rackmounts covering a whole width of the frame or rack
• CPC Class Codes: G02B 6/44528 Patch-cords; Connector arrangements in the system or in the box routing arrangements H04Q1/00
• CPC Class Codes: G02B 6/4453 Cassettes
• 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

A transceiver module support apparatus comprising a support tray received in a chassis. The tray is specially configured for receiving and supporting a plurality of modules with a front portion of the tray including cable routing and supporting features with curved contours of predetermined bending radii to prevent excessive bending or twisting of the cables. The guide portions have smooth contours with the desired bending radii extending in at least two directions to allow for different cable routing. The tray also includes integral structural features for mounting cooling fan units and interconnecting them.

Claims

1. An apparatus for supporting a plurality of electronic modules and routing and guiding optic fiber cables thereto, said apparatus comprising:

a chassis; and

a support tray matingly received in said chassis, said tray comprising

a plurality of module guide means for guiding the modules into proper position on a first side of said tray,

cable guiding and routing means for guiding and routing a cable from a second side of said tray to a connector of each of the modules arranged on said first side, said cable guiding and routing means including a smoothly contoured surface of a predetermined bending radii to prevent excessive bending, twisting and tangling of the cable.

2. The apparatus of claim 1, wherein said cable guiding and routing means comprises a plurality of individual fiber guides and guide slot, said fiber guides each including said smoothly contoured surface of a predetermined bending radii.

3. The apparatus of claim 2, wherein each of said module guide means are aligned with a corresponding one of said fiber guides and said guide slots so that cables for each of the modules are guided along said corresponding fiber guides and guide slots to the connector of the modules.

4. The apparatus of claim 1, wherein said predetermined bending radii is in the range of 1.0 inch to 1.5 inches.

5. The apparatus of claim 1, wherein said support tray further comprises an integral cooling fan support area.

6. The apparatus of claim 5, further comprising a vent in communication with said cooling fan support area.

7. The apparatus of claim 6, further comprising an integral tab on said cooling fan support area for engaging a cooling fan housing.

8. The apparatus of claim 1, wherein said chassis is rectangular including three integral walls surrounding said support tray and a pivoting gate along an open fourth side.

9. A tray for use in a chassis for supporting a plurality of electronic modules and routing and guiding fiber optic cables associated with each of the modules to connectors on the modules, said tray comprising:

a module support area;

a fiber guide area disposed along a first side of said module support area;

a cooling fan support area disposed along a second side of said module support area;

a plurality of module guides for guiding the modules into proper position on said tray;

a cable routing guide associated with each of said module guides for guiding and routing the fiber optic cables to the connectors, said cable routing guide comprising smoothly contoured surfaces of predetermined bending radii to prevent excessive bending, twisting and tangling of the cables.

10. The tray of claim 9, wherein said module guides are disposed so that the modules are slid into position from said first side toward said second side with the connectors finally disposed along said first side to be adjacent said cable routing guides.

11. The tray of claim 9, wherein said cable routing guides further comprise guide slots along said first side for leading the cables to the connectors of the modules.

12. The tray of claim 11, wherein said contoured surfaces of said cable routing guides are contoured to guide the cables from underneath said module support area toward said first side and upward through said guide slots.

13. The tray of claim 11, wherein said contoured surfaces of said cable routing guides are contoured to guide the cables from underneath said module support area and generally parallel to said first side toward said first side and upward through said guide slots.

14. The tray of claim 9, further comprising an integral engagement tab on said cooling fan support area for engaging a cooling fan housing.

15. The tray of claim 9, further comprising a vent provided in said cooling fan support area.

16. The tray of claim 14, further comprising a vent provided in said cooling fan support area.

17. A method of guiding and routing optic fiber cables in a transceiver chassis from their connectors in individual transceiver modules positioned on a first side of a support tray received in the chassis to a location on a second side of the support tray, said method comprising the steps of:

guiding the cables from their connectors through guide slots provided along a first edge of the tray;

leading the cables along a smoothly contoured surface of a predetermined bending radius provided adjacent the guide slots and on said second side of the tray, the bending radius selected to prevent excessive bending, twisting and tangling of the cables;

routing the cables to a location on said second side of the tray.

18. The method of claim 17, wherein said step of leading the cables along the contoured surface comprises leading the cables in a direction parallel to the first edge.

19. The method of claim 17, wherein said step of leading the cables along the contoured surface comprises leading the cables in a direction perpendicular to the first edge.