Optical Communication Connector

• US 20120099822A1
• Filed: 10/22/2010
• Published: 04/26/2012
• Est. Priority Date: 10/22/2010
• Status: Active Grant

• Current Assignee: Panduit Corporation
• Original Assignee: Panduit Corporation
• Inventors: Kuffel, Gregory L., Kwasny, Joel D.
• Granted Patent: US 8,636,424 B2
• Time in Patent Office: Days
• US Class Current: 385/78
• CPC Class Codes: G02B 6/381 of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
• CPC Class Codes: G02B 6/3825 with an intermediate part, e.g. adapter, receptacle, linking two plugs
• CPC Class Codes: G02B 6/383 Hermaphroditic connectors, i.e. two identical plugs mating with one another, each plug having both male and female diametrically opposed engaging parts; electric hermaphroditic coupling H01R24/84, H01R13/28
• CPC Class Codes: G02B 6/3831 comprising a keying element on the plug or adapter, e.g. to forbid wrong connection keying element on the ferrule G02B6/3851; keying element for electrical coupling H01R13/64
• CPC Class Codes: G02B 6/387 Connector plugs comprising two complementary members, e.g. shells, caps, covers, locked together
• CPC Class Codes: G02B 6/3882 using rods, pins or balls to align a pair of ferrule ends
• CPC Class Codes: G02B 6/3885 Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type optical ribbon cable G02B6/4403, G02B6/448
• CPC Class Codes: G02B 6/3893 Push-pull type, e.g. snap-in, push-on
• CPC Class Codes: G02B 6/3898 Tools, e.g. handheld; Tuning wrenches; Jigs used with connectors, e.g. for extracting, removing or inserting in a panel, for engaging or coupling connectors, for assembling or disassembling components within the connector, for applying clips to hold two connectors together or for crimping tools for cleaning, G02B6/3866; tools in general B25B

Abstract

In accordance with the following description, an optical communication connector includes a ferrule having retractable alignment pins that are actuable between an extended position and a retracted position. For example, the connector may include an inner housing assembly having optical fibers and an outer housing positioned over the inner housing assembly. The outer housing is shaped to be removable from the inner housing assembly, which has a movable pin clamp mechanically coupled to alignment pins for aligning the connector with another connector. The pin clamp may be slid from a first position (corresponding to a male gender) to a second position (corresponding to a female gender). Separately or in combination with changing gender, the polarity of a communication connector may be changed due to its inclusion of an asymmetric polarity-changing feature that is actuable by an installer to change a polarity of the communication connector. Such a feature may actuated by being moved from a first position to a second position relative to the communication connector.

Claims

1. An optical communication connector, comprising a ferrule having retractable alignment pins that are actuable between an extended position and a retracted position.

2. The optical communication connector of claim 1,

wherein in the extended position, the alignment pins are extended a first displacement from a front face of the ferrule, thereby causing the connector to be in a male gender configuration, and

wherein in the retracted position, the alignment pins are retracted into alignment pin cavities in the ferrule by a distance greater than or equal to the first displacement, thereby causing the connector to be in a female gender configuration.

3. The optical communication connector of claim 1, wherein actuation of the alignment pins between the extended position and the retracted position is effected using a pin clamp that is mechanically coupled to the alignment pins.

4. The optical communication connector of claim 3, wherein the pin clamp is fixedly attached to the alignment pins.

5. The optical communication connector of claim 3, wherein the pin clamp is coupled to the alignment pins through a mechanical linkage that causes the alignment pins to move by a larger displacement than that of the pin clamp, when the pin clamp is displaced.

6. The optical communication connector of claim 3, wherein the pin clamp includes at least one feature that may be engaged by a tool to effect actuation of the alignment pins between the extended position and the retracted position.

7. The optical communication connector of claim 6, wherein the pin clamp includes at least one tab, and wherein the at least one feature comprises at least one hole located on the tab.

8. The optical communication connector of claim 3, wherein the pin clamp includes at least one tab comprising a post for manual engagement by a user.

9. The optical communication connector of claim 3, further comprising at least one spacer having at least one stop surface, wherein the pin clamp is slidable between a first position and second position corresponding respectively to the extended position and the retracted position, and wherein the first and second positions are defined by the at least one stop surface on the at least one spacer.

10. The optical communication connector of claim 3, further comprising at least one spacer having a stop surface, wherein the pin clamp comprises a tab that, upon being deflected, allows the pin clamp to move below the stop surface.

11. The optical communication connector of claim 3, wherein the pin clamp comprises two pin clamps, wherein each pin clamp comprises at least one tab that can be deflected to allow the pin clamp to move below a stop surface on a spacer located on the connector.

12. The optical communication connector of claim 1, further comprising a polarity key having a configuration that can be altered to change a polarity of the connector.

13. The optical communication connector of claim 12, wherein the configuration of the polarity key is altered by rotating the polarity key in relation to the connector.

14. The optical communication connector of claim 12, wherein the polarity key is located on an outer housing of the connector, and wherein the outer housing can be rotated around an axial length of the connector to effect the change in polarity.

15. The optical communication connector of claim 14, wherein the polarity key includes a polarity key tab and a blank tab 180-degrees opposite the polarity key tab on the outer housing, wherein the polarity key tab and the blank tab mechanically interface with features on the connector, and wherein rotation of the housing relative to the axial length effects the change in polarity.

16. The optical communication connector of claim 1, wherein the connector is an MPO connector.

17. An optical communication connector, comprising:

an inner housing assembly having optical fibers disposed therein; and

an outer housing disposed over the inner housing assembly, the outer housing shaped to be removable from the inner housing assembly;

wherein the inner housing assembly comprises a movable pin clamp mechanically coupled to alignment pins for aligning the connector with another connector, wherein the pin clamp may be slid from a first position to a second position, and wherein the first position corresponds to a male gender and the second position corresponds to a female gender.

18. The optical communication connector of claim 17, further comprising a ferrule through which the optical fibers and alignment pins pass,

wherein in the first position, the alignment pins are extended a first displacement along a z-axis orthogonal to a front face of the ferrule, and

wherein in the second position, the alignment pins are retracted into alignment pin cavities in the ferrule by a distance greater than or equal to the first displacement along the z-axis orthogonal to the front face of the ferrule.

19. The optical communication connector of claim 17, wherein the pin clamp is fixedly attached to the alignment pins.

20. The optical communication connector of claim 17, wherein the pin clamp is coupled to the alignment pins through a mechanical linkage that causes the alignment pins to move by a larger displacement than that of the pin clamp, when the pin clamp is displaced.

21. The optical communication connector of claim 17, wherein the pin clamp includes at least one feature that may be engaged by a tool to effect actuation of the alignment pins between the first position and the second position.

22. The optical communication connector of claim 17, wherein the inner housing assembly comprises at least two stop surfaces to limit movement of the pin clamp to a length between the first and second positions.

23. The optical communication connector of claim 22, wherein the at least two stop surfaces are located on one or more spacers on the inner housing assembly.

24. The optical communication connector of claim 22, wherein the pin clamp comprises a tab that, upon being deflected, allows the pin clamp to move past one of the at least two stop surfaces.

25. The optical communication connector of claim 17, wherein the inner housing assembly comprises a plurality of spacers having stop surfaces to constrain sliding movement of the pin clamp to a length bound by the first position and the second position.

26. The optical communication connector of claim 17, wherein the pin clamp is designed to be slid only when the outer housing is removed.

27. The optical communication connector of claim 17, wherein the pin clamp comprises two pin clamps located on opposite sides of the inner housing assembly, wherein each pin clamp comprises at least one tab that can be deflected to allow the pin clamp to move below a stop surface on a spacer located on the inner housing assembly.

28. The optical communication connector of claim 17, wherein the outer housing comprises a polarity key configured so that a polarity of the connector is defined based on how the outer housing is installed.

29. The optical communication connector of claim 18, wherein the outer housing comprises a polarity key tab and a blank tab located opposite the polarity key tab, wherein the polarity key tab has a polarity key formed thereon to define a polarity of the connector, wherein the polarity key tab and the blank tab are shaped to fit in respective first and second recessed features located on opposite sides of the inner housing assembly, and wherein the polarity of the connector can be changed by rotating the outer housing around the z-axis so that the polarity key tab fits in the second recessed feature and the blank key tab fits in the first recessed feature.

30. The optical communication connector of claim 29, wherein the first and second recessed features include guides along which the polarity key tab and the blank tab of the outer housing may slide along the z-axis as the outer housing is installed onto the inner housing assembly.

31. The optical communication connector of claim 30, wherein the polarity key tab and the blank tab each have planar protrusions spanning outward from their centers, and wherein the recessed features of the inner housing assembly each have protrusion retainers.

32. The optical communication connector of claim 30, further comprising a latch mechanism to secure the outer housing to the inner housing assembly.

33. The optical communication connector of claim 17, wherein the connector is an MPO connector.

34. An optical communication connector, comprising:

an inner housing assembly that houses a plurality of optical fibers disposed in a ferrule, wherein the inner housing assembly has a stop surface that defines a first position corresponding to a male gender and a second position corresponding to a female gender; and

a movable pin clamp disposed in the inner housing assembly, wherein the pin clamp has a deflectable tab that may be slid relative to the stop surface from the first position to the second position to change the gender of the connector.

35. The optical communication connector of claim 34, further comprising an outer housing for installation over the inner housing assembly, wherein the outer housing covers the movable pin clamp.

36. The optical communication connector of claim 35, wherein the outer housing comprises a polarity key disposed on one of a plurality of outside edges of the outer housing to define a polarity of the connector, wherein the polarity is defined based on which of two installation modes the outer housing is installed, wherein the first installation mode differs from the second installation mode in how the outer housing is rotated relative to the inner housing assembly during installation of the outer housing onto the inner housing assembly.

37. The optical communication connector of claim 36, wherein in the first installation mode, the outer housing is rotated 180 degrees opposite from in the second installation mode, thereby causing the polarity key to correspondingly be rotated 180 degrees relative to the inner housing assembly.

38. An optical communication connector, comprising:

an inner housing assembly having a ferrule with optical fibers disposed therein; and

an outer housing shaped to slide over the inner housing assembly;

wherein the outer housing has a polarity key disposed thereon, and wherein the outer housing may be rotated 180-degrees along an axis orthogonal to a front face of the ferrule to cause the polarity key to be rotated from a first position to a second position, wherein the first position corresponds to a first polarity and the second position corresponds to a second polarity, and wherein the inner housing assembly has at least two recessed features, each being shaped to accept the polarity key when the outer housing is slid over the inner housing assembly.

39. A communication connector, comprising a polarity-changing feature actuable by an installer to change a polarity of the communication connector, the polarity-changing feature being an asymmetric feature that may actuated by being moved from a first position to a second position relative to the communication connector.

40. A fiber adapter panel having a plurality of optical communication connectors, at least one of which comprises:

an inner housing assembly having optical fibers disposed therein; and

an outer housing disposed over the inner housing assembly, the outer housing shaped to be removable from the inner housing assembly;

wherein the inner housing assembly comprises a movable pin clamp mechanically coupled to alignment pins for aligning the connector with another connector, wherein the pin clamp may be slid from a first position to a second position, and wherein the first position corresponds to a male gender and the second position corresponds to a female gender.

41. An optical communication cable comprising at least one end terminated at an optical communication connector, the optical communication connector comprising:

an inner housing assembly having optical fibers disposed therein; and

an outer housing disposed over the inner housing assembly, the outer housing shaped to be removable from the inner housing assembly;

wherein the inner housing assembly comprises a movable pin clamp mechanically coupled to alignment pins for aligning the connector with another connector, wherein the pin clamp may be slid from a first position to a second position, and wherein the first position corresponds to a male gender and the second position corresponds to a female gender.