Optical fiber connector assembly

Patent metadata

Field	Value
Publication number	US-9846284-B2
Application number	US-201415501644-A
Country	US
Kind code	B2
Filing date	Aug 6, 2014
Priority date	Aug 6, 2014
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

Optical fiber connector assembly for a fiber optic cable includes an optical fiber having an end portion terminated with a ferrule. The optical fiber connector assembly includes: a sleeve configured to at least partially house the end portion of the optical fiber terminated with the ferrule; a connector including a body extending lengthwise and having an internal passageway for the sleeve, the body having a distal portion, configured to house the sleeve and to mate with a corresponding receptacle, and a proximal portion configured to be coupled to an end portion of the fiber optic cable, the proximal portion having on its lateral surface at least one aperture; and a crimping element adapted to couple the proximal portion of the body to the end portion of the fiber optic cable at the at least one aperture. A pre-connectorized fiber optic cable includes a fiber optic cable and the optical fiber connector assembly mounted upon an end portion of the fiber optic cable.

First claim

The invention claimed is:

1. An optical fiber connector assembly for a fiber optic cable comprising an optical fiber having an end portion terminated with a ferrule, the optical fiber connector assembly comprising:
a sleeve configured to at least partially house the end portion of the optical fiber terminated with the ferrule;
a connector comprising a body extending lengthwise and having an internal passageway for the sleeve, the body having a distal portion configured to house the sleeve and to mate with a corresponding receptacle, and a proximal portion configured to be coupled to an end portion of the fiber optic cable, the proximal portion having on its lateral surface at least one aperture; and
a crimping element adapted-to couple the proximal portion of the body to the end portion of the fiber optic cable at said at least one aperture.

2. The optical fiber connector assembly according to claim 1 , wherein the sleeve comprises at least one finger projecting from a distal end of the sleeve.

3. The optical fiber connector assembly according to claim 2 , wherein the ferrule comprises a flange, each finger defining an engagement member adapted to mate with one of a corresponding plurality of engagement members defined by the flange.

4. The optical fiber connector assembly according to claim 2 wherein the at least one finger is configured to provide a support for the ferrule so that a distal end of the ferrule projects beyond the at least one finger.

5. The optical fiber connector assembly according to claim 1 , wherein the body of the connector is monolithic.

6. The optical fiber connector assembly according to claim 1 , wherein the sleeve extends lengthwise and defines an internal passageway that extends lengthwise between the distal end and the proximal end of the sleeve and through which the end portion of the optical fiber terminated with the ferrule extends.

7. The optical fiber connector assembly according to claim 1 , wherein the sleeve comprises a slot extending lengthwise between distal and proximal ends of the sleeve having a size such as to enable insertion of the end portion of the optical fiber.

8. The optical fiber connector assembly according to claim 7 , wherein the distal portion of the body of the connector comprises, in an internal surface thereof, a protrusion extending lengthwise, adapted to mate with the slot of the sleeve.

9. The optical fiber connector assembly according to claim 1 , wherein the ferrule is associated with a spring, the sleeve defining an internal shoulder for the spring, proximate a distal end of the sleeve.

10. The optical fiber connector assembly according to claim 1 , wherein said at least one aperture on the lateral surface of the proximal portion of the body comprises two opposite pairs of apertures.

11. The optical fiber connector assembly according to claim 1 , comprising a nut configured to be disposed about the body of the connector.

12. The optical fiber connector assembly according to claim 11 , wherein the nut is configured to fix the optical fiber connector assembly to a corresponding fiber optic receptacle.

13. A pre-connectorized fiber optic cable comprising a fiber optic cable and an optical fiber connector assembly mounted upon an end portion of the fiber optic cable, the fiber optic cable comprising a cable jacket accommodating an optical fiber having an end portion terminated with a ferrule, the optical fiber connector assembly comprising:
a sleeve at least partially housing the end portion of the optical fiber terminated with the ferrule;
a connector comprising a body extending lengthwise and having an internal passageway for the sleeve, the body having a distal portion housing the sleeve and a proximal portion disposed about the end portion of the fiber optic cable, the proximal portion having on its lateral surface at least one aperture; and
a crimping element crimped about the proximal portion of the body at said at least one aperture so as to couple said proximal portion of the body to the end portion of the fiber optic cable.

14. The pre-connectorized fiber optic cable according to claim 13 , wherein the fiber optic cable comprises strength members comprising rod members that are trimmed off at the end portion of the fiber optic cable.

15. The pre-connectorized fiber optic cable according to claim 13 , wherein the fiber optic cable further comprises strength members comprising yarns that are folded back over the cable jacket of the end portion of the fiber optic cable so that said yarns are disposed between the proximal portion of the body of the connector and the external surface of the cable jacket at the end portion of the fiber optic cable.

16. The pre-connectorized fiber optic cable according to claim 13 , wherein the fiber optic cable comprises a single optical fiber.

Assignees

• Prysmian Spa
• Prysmian Spa

Inventors

• Griffiths Ian
• Kerry Matt
• Pike Stephen

Classifications

• G02B6/3877

  Split sleeves · CPC title

• G02B6/381

  of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres · CPC title

• G02B6/3874

  using tubes, sleeves to align ferrules · CPC title

• G02B6/3869

  Mounting ferrules to connector body, i.e. plugs · CPC title

• G02B6/3821

  with axial spring biasing or loading means (G02B6/3847 takes precedence) · CPC title