Cable enclosure assemblies and methods for using the same
View Patent ↗A cable enclosure for use with a cable having a lengthwise cable axis, an outer jacket and a transmission media within the outer jacket, includes a housing assembly and a strain relief structure on the housing assembly. The housing assembly defines a chamber and a cable port. The housing assembly is configured to receive the cable. The strain relief structure includes a pair of opposed engagement structures defining a cable slot therebetween. At least one of the engagement structures includes a blade edge flanking the cable slot. The cable enclosure is configured to receive the cable such that the cable extends through the cable port and into the chamber and a portion of the cable is received in the cable slot such that the at least one blade edge cuts into the outer jacket to resist withdrawal of the cable from the chamber through the cable port.
1. A cable enclosure for use with a cable having a lengthwise cable axis, an outer jacket and a transmission media within the outer jacket, the cable enclosure comprising:
a housing assembly defining a chamber and a cable port, wherein the housing assembly is configured to receive the cable; and
a strain relief structure on the housing assembly, the strain relief structure including a pair of opposed engagement structures defining a cable slot therebetween, at least one of the engagement structures including a blade edge flanking the cable slot;
wherein the cable enclosure is configured to receive the cable such that the cable extends through the cable port and into the chamber and a portion of the cable is received in the cable slot such that the at least one blade edge cuts into the outer jacket to resist withdrawal of the cable from the chamber through the cable port.
2. The cable enclosure of claim 1 wherein the cable slot has a nominal width that is less than an outer diameter of the outer jacket.
3. The cable enclosure of claim 1 wherein both of the engagement structures include a blade edge flanking the cable slot and, when the portion of the cable is received in the cable slot, both of the blade edges cut into the outer jacket to resist withdrawal of the cable from the chamber through the cable port.
4. The cable enclosure of claim 1 wherein the strain relief structure is a strain relief member separately formed from and secured to the housing assembly.
5. The cable enclosure of claim 1 wherein the strain relief structure is formed of metal.
6. The cable enclosure of claim 5 wherein the housing assembly is formed of a polymeric material.
7. The cable enclosure of claim 1 wherein:
the strain relief structure includes a base portion and has a passthrough axis along which the lengthwise axis of the cable extends when the cable is mounted in the cable slot; and
at least one of the engagement structures has a fixed end opposite and secured to the base portion and a blade edge opposite the fixed end, said at least one of the engagement structures tapering inwardly toward the passthrough axis in a direction away from the cable port.
8. The cable enclosure of claim 7 wherein the at least one of the engagement structures is radially outwardly deflectable with respect to the passthrough axis to accommodate a prescribed range of cable diameters.
9. The cable enclosure of claim 1 wherein:
the strain relief structure has a passthrough axis along which the lengthwise axis of the cable extends when the cable is mounted in the cable slot; and
the cable slot is generally U-shaped and includes an opening to receive the cable in a direction substantially perpendicular to the passthrough axis.
10. The cable enclosure of claim 9 wherein the housing assembly includes a locator feature to limit radial displacement of the cable with respect to the passthrough axis.
11. The cable enclosure of claim 1 including a cable sealant to surround and provide an environmental seal about a portion of the cable when the cable is mounted in the housing assembly.
12. The cable enclosure of claim 1 wherein the cable includes an inner jacket interposed between the transmission media and the outer jacket, and the cable enclosure is configured to receive the cable such that the portion of the cable is received in the cable slot such that the at least one blade edge cuts into the outer jacket to resist withdrawal of the cable from the chamber through the cable port, but does not cut into the inner jacket.
13. The cable enclosure of claim 1 including the cable installed in the housing assembly and the strain relief structure, wherein the transmission media is an optical fiber.
14. The cable enclosure of claim 13 wherein the cable includes an inner jacket interposed between the optical fiber and the outer jacket, and the at least one blade edge cuts into the outer jacket to resist withdrawal of the cable from the chamber through the cable port, but does not cut into the inner jacket.
15. The cable enclosure of claim 14 wherein the cable is a flat drop cable having, in cross-section, a width and a height greater than the width.
16. The cable enclosure of claim 15 wherein the cable slot has a slot width that is less than the cable width.
17. The cable enclosure of claim 15 wherein:
the cable includes a pair of strength members within the outer jacket and outside the inner jacket, the strength members being located at opposed ends of the height of the cable; and
the blade edges define a blade axis therebetween and the cable slot is configured such that the flat drop cable can only be inserted into the cable slot such that the blade axis extends through each of the strength members to prevent the engagement structures from cutting into the inner jacket.
18. The cable enclosure of claim 13 including a second optical fiber disposed in the housing assembly, and a splice operatively connecting the optical fiber of the cable and second optical fiber.
19. The cable enclosure of claim 1 including at least one strength member pocket wall on the housing assembly defining a strength member pocket, wherein the cable enclosure is configured to receive the cable such that the cable extends through the cable port, a transmission media of the cable extends into the chamber, and a terminal end of a strength member of the cable is contained in the strength member pocket to limit intrusion of the jacket and intrusion of the strength member into the housing assembly through the cable port.
20. A method for securing a cable in a cable enclosure, the cable having a lengthwise cable axis, an outer jacket and a transmission media within the outer jacket, the method comprising:
providing a cable enclosure including:
a housing assembly defining a chamber and a cable port, wherein the housing assembly is configured to receive the cable; and
a strain relief structure on the housing assembly, the strain relief structure including a pair of opposed engagement structures defining a cable slot therebetween, at least one of the engagement structures including a blade edge flanking the cable slot; and
installing the cable in the cable enclosure such that the cable extends through the cable port and into the chamber, including inserting a portion of the cable in the cable slot such that the at least one blade edge cuts into the outer jacket to resist withdrawal of the cable from the chamber through the cable port.
21. A strain relief device for use with a flat drop cable having a cable width, a cable height greater than the cable width, a lengthwise cable axis, an outer jacket and a transmission media within the outer jacket, the strain relief device comprising:
a body; and
a strain relief structure on the body, the strain relief structure including a pair of opposed engagement structures defining a cable slot therebetween, at least one of the engagement structures including a blade edge flanking the cable slot;
wherein the strain relief structure is configured to receive the flat drop cable such that a portion of the flat drop cable is received in the cable slot such that at least one blade edge cuts into the outer jacket to resist withdrawal of the flat drop cable from the strain relief structure; and
wherein the cable slot has a slot width that is less than the cable width.
22. A method for securing a flat drop cable, the flat drop cable having a cable width, a cable height greater than the cable width, a lengthwise cable axis, an outer jacket and a transmission media within the outer jacket, the method comprising:
providing a strain relief device including:
a body; and
a strain relief structure on the body, the strain relief structure including a pair of opposed engagement structures defining a cable slot therebetween, at least one of the engagement structures including a blade edge flanking the cable slot;
installing the flat drop cable in the strain relief structure, including inserting a portion of the flat drop cable in the cable slot such that at least one blade edge cuts into the outer jacket to resist withdrawal of the flat drop cable from the strain relief structure.
23. A cable enclosure for use with a cable having a lengthwise cable axis, an outer jacket and a transmission media and a strength member within the outer jacket, the outer jacket and the strength member each having a terminal end, the cable enclosure comprising:
a housing assembly defining a chamber and a cable port, wherein the housing assembly is configured to receive the cable; and
at least one strength member pocket wall on the housing assembly defining a strength member pocket;
wherein the cable enclosure is configured to receive the cable such that the cable extends through the cable port, the transmission media extends into the chamber, and the terminal end of the strength member is contained in the strength member pocket to limit intrusion of the jacket and intrusion of the strength member into the housing assembly through the cable port.
24. A method for securing a cable in cable enclosure, the cable having a lengthwise cable axis, an outer jacket and a transmission media and a strength member within the outer jacket, the outer jacket and the strength member each having a terminal end, the method comprising:
providing a cable enclosure including:
a housing assembly defining a chamber and a cable port, wherein the housing assembly is configured to receive the cable; and
at least one strength member pocket wall on the housing assembly defining a strength member pocket; and
installing the cable in the cable enclosure such that the cable extends through the cable port, the transmission media extends into the chamber, and the terminal end of the strength member is contained in the strength member pocket to limit intrusion of the jacket and intrusion of the strength member into the housing assembly through the cable port.