Hardened fiber optic connector compatible with hardened and non-hardened fiber optic adapters

• US 7,744,288 B2
• Filed: 09/03/2008
• Issued: 06/29/2010
• Est. Priority Date: 12/11/2007
• Status: Expired due to Fees

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: ADC Telecommunications Incorporated (TE Connectivity Limited)
• Inventors: Reagan, Randy, Lu, Yu, Standish, Craig M.
• Primary Examiner(s): Le; Uyen-Chau N
• Assistant Examiner(s): Prince; Kajli
• Application Number:
  US12/203,508
• Publication Number:
  US 20090148102A1
• Time in Patent Office: 664 Days
• Field of Search: 385/60, 385/72
• US Class Current: 385/60
• CPC Class Codes: G02B 6/3816 for use under water, high pressure connectors provisionally see G02B6/4428
• CPC Class Codes: G02B 6/3821 with axial spring biasing or loading means G02B6/3847 takes precedence
• CPC Class Codes: G02B 6/3825 with an intermediate part, e.g. adapter, receptacle, linking two plugs
• CPC Class Codes: G02B 6/3826 characterised by form or shape
• CPC Class Codes: G02B 6/3849 using mechanical protective elements, e.g. caps, hoods, sealing membranes G02B6/3816 takes precedence; provisionally see H01R13/44
• CPC Class Codes: G02B 6/3877 Split sleeves
• CPC Class Codes: G02B 6/3887 Anchoring optical cables to connector housings, e.g. strain relief features
• CPC Class Codes: G02B 6/3888 Protection from over-extension or over-compression
• CPC Class Codes: G02B 6/3889 using encapsulation for protection, e.g. adhesive, molding or casting resin
• CPC Class Codes: G02B 6/3893 Push-pull type, e.g. snap-in, push-on
• CPC Class Codes: G02B 6/3894 Screw-lock type
• CPC Class Codes: G02B 6/4433 Double reinforcement laying in straight line with optical transmission element

Abstract

A fiber optic connector is disclosed for use with both a hardened fiber optic adapter and a non-hardened fiber optic adapter. The connector includes a connector housing having an end defining a plug portion. The plug portion includes first and second sets of retaining features for retaining the connector. The first and second retaining feature sets retain the connector within the hardened and unhardened adapters respectively. A threaded member can be included on the connector to threadingly engage and connect the connector to the hardened adapter. A sliding lock can be included on the connector to lock the connector to the non-hardened adapter when slid into a locking position. The sliding lock can be mounted to the threaded member. The sliding lock can include protrusions that engage and lock the non-hardened adapter when in the locking position thereby locking the non-hardened adapter to the connector.

Claims

1. A ruggedized fiber optic connector that is compatible with a non-ruggedized fiber optic adapter and a ruggedized fiber optic adapter, the non-ruggedized fiber optic adapter and the ruggedized fiber optic adapter each including at least one retention latch, the ruggedized fiber optic connector comprising:

a ferrule aligned along a central longitudinal axis;

a connector housing including a plug portion having an interface end sized to fit within the non-ruggedized fiber optic adapter and the ruggedized fiber optic adapter, the ferrule being positioned at the interface end of the plug portion, the plug portion having a first catch structure for engaging the retention latch of the non-ruggedized fiber optic adapter to retain the plug portion within the non-ruggedized fiber optic adapter and a second catch structure for engaging the retention latch of the ruggedized fiber optic adapter to retain the plug portion within the ruggedized fiber optic adapter;

a ruggedized retention member mounted on the connector housing, the ruggedized retention member engaging the ruggedized fiber optic adapter to retain the plug portion within the ruggedized fiber optic adapter;

wherein the non-ruggedized fiber optic adapter includes a pair of the retention latches and wherein the first catch structure includes first and second catches for engaging the pair of the retention latches to retain the plug portion within the non-ruggedized fiber optic adapter; and

wherein the plug portion has a first side and an opposite second side, wherein the plug portion also has a third side and an opposite fourth side, the third and fourth sides extending between the first and second sides, the central longitudinal axis being positioned between the first and second sides and the central longitudinal axis also being positioned between the third and fourth sides, the first catch of the first catch structure being provided at the first side, the second catch of the first catch structure being provided at the second side, and the second catch structure being provided at the third side.

2. The ruggedized fiber optic connector of claim 1, wherein the ruggedized fiber optic adapter includes threads, and wherein the ruggedized retention member includes a threaded member rotatably mounted about the connector housing that engages the threads of the ruggedized fiber optic connector to retain the plug portion within the ruggedized fiber optic adapter.

3. The ruggedized fiber optic connector of claim 1, wherein the plug portion has a generally rectangular cross-sectional shape.

4. The ruggedized fiber optic connector of claim 1, wherein the first and second catches of the first catch structure are formed by recesses provided at the first and second side of the plug portion of the connector housing.

5. The ruggedized fiber optic connector of claim 4, wherein the recesses are defined at least in part by recessed latch engagement surfaces that engage the retention latches of the non-ruggedized fiber optic adapter to retain the plug portion within the non-ruggedized fiber optic adapter, the recessed latch engagement surfaces being angled relative to the central longitudinal axis such that the recessed latch engagement surfaces extend radially outwardly relative to the central longitudinal axis as the recessed latch engagement surfaces extend in a direction of insertion of the ruggedized fiber optic connector.

6. The ruggedized fiber optic connector of claim 5, wherein the second catch structure includes a projection provided at the third side of the plug portion of the connector housing.

7. The ruggedized fiber optic connector of claim 6, wherein the projection includes a protruding latch engagement surface that engages the retention latch of the ruggedized fiber optic adapter to retain the plug portion within the ruggedized fiber optic adapter, the protruding latch engagement surface being angled relative to the central longitudinal axis such that the protruding latch engagement surface extends radially outwardly relative to the central longitudinal axis as the protruding latch engagement surface extends in the direction of insertion of the ruggedized fiber optic connector.

8. The ruggedized fiber optic connector of claim 7, wherein the fourth side of the connector housing defines a connector alignment slot for rotationally aligning the plug portion within the ruggedized fiber optic adapter, the connector alignment slot extending in a direction parallel to the central longitudinal axis and including a tapered portion that widens as the connector alignment slot extends in the direction of insertion of the ruggedized fiber optic connector.

9. The ruggedized fiber optic connector of claim 1, wherein the second catch structure is rotationally offset about ninety degrees about the central longitudinal axis relative to the first catch structure.

10. The ruggedized fiber optic connector of claim 1, wherein the plug portion has a first side and an opposite second side, wherein the plug portion also has a third side and an opposite fourth side, the third and fourth sides extending between the first and second sides, the central longitudinal axis being positioned between the first and second sides and the central longitudinal axis also being positioned between the third and fourth sides, the first catch structure being provided at the first side and the second catch structure being provided at the third side.

11. The ruggedized fiber optic connector of claim 1, wherein the plug portion does not include an SC connector release sleeve for use in disengaging the pair of the retention latches of the non-ruggedized fiber optic adapter from the first and second catches of the first catch structure.

12. A ruggedized fiber optic connector that is compatible with a non-ruggedized fiber optic adapter and a ruggedized fiber optic adapter, the non-ruggedized fiber optic adapter and the ruggedized fiber optic adapter each including at least one retention latch, the ruggedized fiber optic connector comprising:

a ferrule aligned along a central longitudinal axis;

a connector housing including a plug portion having an interface end sized to fit within the non-ruggedized fiber optic adapter and the ruggedized fiber optic adapter, the ferrule being positioned at the interface end of the plug portion, the plug portion having a first catch structure for engaging the retention latch of the non-ruggedized fiber optic adapter to retain the plug portion within the non-ruggedized fiber optic adapter and a second catch structure for engaging the retention latch of the ruggedized fiber optic adapter to retain the plug portion within the ruggedized fiber optic adapter;

a ruggedized retention member mounted on the connector housing, the ruggedized retention member engaging the ruggedized fiber optic adapter to retain the plug portion within the ruggedized fiber optic adapter, wherein the ruggedized retention member includes a threaded member adapted to threadingly engage the ruggedized fiber optic adapter, wherein the ruggedized fiber optic connector further includes a locking member that can be threadingly connected to the threaded member, and wherein after the plug portion has been inserted into the non-ruggedized fiber optic adapter, the locking member can be moved along the central longitudinal axis relative to the plug portion and into the non-ruggedized fiber optic adapter to increase a retention force provided by the retention latch of the non-ruggedized fiber optic adapter.

13. A ruggedized fiber optic connector that is compatible with a non-ruggedized fiber optic adapter and a ruggedized fiber optic adapter, the non-ruggedized fiber optic adapter and the ruggedized fiber optic adapter each including at least one retention latch, the ruggedized fiber optic connector comprising:

a ferrule aligned along a central longitudinal axis;

a connector housing including a plug portion having an interface end sized to fit within the non-ruggedized fiber optic adapter and the ruggedized fiber optic adapter, the ferrule being positioned at the interface end of the plug portion, the plug portion having a first catch structure for engaging the retention latch of the non-ruggedized fiber optic adapter to retain the plug portion within the non-ruggedized fiber optic adapter and a second catch structure for engaging the retention latch of the ruggedized fiber optic adapter to retain the plug portion within the ruggedized fiber optic adapter, the first catch structure not engaging the retention latch of the ruggedized fiber optic adapter when the plug portion is retained within the ruggedized fiber optic adapter by the retention latch of the ruggedized fiber optic adapter, and the second catch structure not engaging the retention latch of the non-ruggedized fiber optic adapter when the plug portion is retained within the non-ruggedized fiber optic adapter by the retention latch of the non-ruggedized fiber optic adapter; and

a ruggedized retention member mounted on the connector housing, the ruggedized retention member engaging the ruggedized fiber optic adapter to retain the plug portion within the ruggedized fiber optic adapter.

14. The ruggedized fiber optic connector of claim 13, wherein the ruggedized fiber optic adapter includes threads, and wherein the ruggedized retention member includes a threaded member rotatably mounted about the connector housing that engages the threads of the ruggedized fiber optic connector to retain the plug portion within the ruggedized fiber optic adapter.

15. The ruggedized fiber optic connector of claim 13, wherein the non-ruggedized fiber optic adapter includes a pair of the retention latches, and wherein the first catch structure includes first and second catches that engage the pair of the retention latches.

16. The ruggedized fiber optic connector of claim 15, wherein the plug portion does not include an SC connector release sleeve for use in disengaging the pair of the retention latches of the non-ruggedized fiber optic adapter from the first and second catches of the first catch structure.

17. The ruggedized fiber optic connector of claim 13, wherein the second catch structure is rotationally offset about ninety degrees about the central longitudinal axis relative to the first catch structure.

18. The ruggedized fiber optic connector of claim 13, wherein the plug portion has a first side and an opposite second side, wherein the plug portion also has a third side and an opposite fourth side, the third and fourth sides extending between the first and second sides, the central longitudinal axis being positioned between the first and second sides and the central longitudinal axis also being positioned between the third and fourth sides, the first catch structure being provided at the first side and the second catch structure being provided at the third side.

19. The ruggedized fiber optic connector of claim 13, wherein the ruggedized retention member includes a threaded member adapted to threadingly engage the ruggedized fiber optic adapter, wherein the ruggedized fiber optic connector further includes a locking member that can be threadingly connected to the threaded member, and wherein after the plug portion has been inserted into the non-ruggedized fiber optic adapter, the locking member can be moved along the central longitudinal axis and into the non-ruggedized fiber optic adapter to increase a retention force provided by the retention latch of the non-ruggedized fiber optic adapter.