TUNABLE FIBER OPTIC CONNECTOR AND METHOD FOR ASSEMBLING

• US 20020081077A1
• Filed: 12/27/2000
• Published: 06/27/2002
• Est. Priority Date: 12/27/2000
• Status: Active Grant

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: ADC Telecommunications Incorporated (TE Connectivity Limited)
• Inventors: Nault, Patrick Jude
• Granted Patent: US 6,428,215 B1
• Time in Patent Office: Days
• US Class Current: 385/78
• CPC Class Codes: G02B 6/266 the optical element being an attenuator
• CPC Class Codes: G02B 6/3821 with axial spring biasing or loading means G02B6/3847 takes precedence
• CPC Class Codes: G02B 6/3843 with auxiliary facilities for movably aligning or adjusting the fibre within its ferrule, e.g. measuring position or eccentricity testing the alignment of axes, including eccentricity, G01B11/27
• CPC Class Codes: G02B 6/3869 Mounting ferrules to connector body, i.e. plugs
• CPC Class Codes: G02B 6/3871 Ferrule rotatable with respect to plug body, e.g. for setting rotational position adjusting fibre within the ferrule, G02B6/3843; Fixation of ferrules after rotation
• CPC Class Codes: G02B 6/3893 Push-pull type, e.g. snap-in, push-on

Abstract

A tunable connector and method for assembling a tunable connector. The connector includes a ferrule that is retainably engaged within a hub. The connector further includes a rear housing and a front housing. The rear housing is sized to receive and rotationally retain the hub. The front housing has a bore that receives and engages the exterior surface of the rear housing. The front and rear housing include engagement members that allow the rear housing to be retained within the front housing and rotated relative to the front housing between discrete positions.

Claims

1. A fiber optic connector comprising:

a ferrule;

a hub retainably engaging the ferrule;

a rear housing having an external surface and a bore for receiving the hub, the rear housing rotationally retaining the hub;

a front housing having a bore with an internal surface for receiving and engaging the external surface of the rear housing; and

an engagement member on each of the front and rear housings, wherein the rear housing is rotatable within the front housing between selectable discrete positions defined by the engagement members.

2. The connector of claim 1, wherein the connector is an SC-type connector.

3. The connector of claim 1, wherein the bore of the rear housing has a noncircular configuration, and the hub has an external surface with a corresponding noncircular configuration.

4. The connector of claim 3, wherein the hub inserts into the rear housing in only one orientation.

5. The connector of claim 1, wherein the rear housing includes a plurality of engagement members extending around a circumference of the external surface of the rear housing, and the internal surface of the front housing further includes a corresponding engagement member, wherein rotation of the rear housing within the bore of the front housing sequentially engages each of the plurality of engagement members with the corresponding engagement member, each sequential engagement defining a selectable discrete position.

6. The connector of claim 1, wherein the engagement member on the rear housing includes a plurality of teeth extending from the external surface around a circumference of the rear housing, and wherein the engagement member on the front housing includes a recess, the recess defined by a first tooth and a second tooth extending from the internal surface of the front housing into the bore of the front housing, wherein rotation of the rear housing within the front housing sequentially engages each of the plurality of teeth within the recess, the engagement of each of the plurality of teeth within the recess defining a selectable discrete position.

7. The connector of claim 6, wherein the engagement member on the front housing further includes a second recess defined by a third tooth and a fourth tooth extending from the internal surface of the front housing into the bore of the front housing, the second recess engaging one of the plurality of teeth at each of the selectable discrete positions.

8. The connector of claim 1, wherein the front housing has a key element, and wherein the connector further includes a grip with a corresponding key element mating with the front housing key element.

9. The connector of claim 8, wherein the rear housing includes a plurality of engagement members extending around a circumference of the external surface of the rear housing, and the internal surface of the front housing further includes a corresponding engagement member, wherein rotation of the rear housing within the bore of the front housing sequentially engages each of the plurality of engagement members with the corresponding engagement member, each sequential engagement defining a selectable discrete position.

10. The connector of claim 8, wherein the engagement member on the rear housing includes a plurality of teeth extending from the external surface around a circumference of the rear housing, and wherein the engagement member on the front housing includes a recess, the recess defined by a first tooth and a second tooth extending from the internal surface of the front housing into the bore of the front housing, wherein rotation of the rear housing within the front housing sequentially engages each of the plurality of teeth within the recess, the engagement of each of the plurality of teeth within the recess defining a selectable discrete position.

11. The connector of claim 10, wherein the engagement member on the front housing further includes a second recess defined by a third tooth and a fourth tooth extending from the internal surface of the front housing into the bore of the front housing, the second recess engaging one of the plurality of teeth at each of the selectable discrete positions.

12. The connector of claim 1, further including a grip engaging the front housing, the grip locking the front housing to the rear housing at one of the selectable discrete positions.

13. The connector of claim 12, wherein the rear housing includes a plurality of engagement members extending around a circumference of the external surface of the rear housing, and the internal surface of the front housing further includes a corresponding engagement member, wherein rotation of the rear housing within the bore of the front housing sequentially engages each of the plurality of engagement members with the corresponding engagement member, each sequential engagement defining a selectable discrete position.

14. The connector of claim 12, wherein the engagement member on the rear housing includes a plurality of teeth extending from the external surface around a circumference of the rear housing, and wherein the engagement member on the front housing includes a recess, the recess defined by a first tooth and a second tooth extending from the internal surface of the front housing into the bore of the front housing, wherein rotation of the rear housing within the front housing sequentially engages each of the plurality of teeth within the recess, the engagement of each of the plurality of teeth within the recess defining a selectable discrete position.

15. The connector of claim 14, wherein the engagement member on the front housing further includes a second recess defined by a third tooth and a fourth tooth extending from the internal surface of the front housing into the bore of the front housing, the second recess engaging one of the plurality of teeth at each of the selectable discrete positions.

17. The connector of claim 16, wherein the connector is an SC-type connector.

18. The connector of claim 16, wherein the retention means on the rear housing includes a plurality of teeth extending from the external surface around a circumference of the rear housing, and wherein the retention means on the front housing includes a recess, the recess defined by a first tooth and a second tooth extending from the internal surface of the front housing into the bore of the front housing, wherein rotation of the rear housing within the front housing sequentially engages each of the plurality of teeth within the recess, the engagement of each of the plurality of teeth within the recess defining a selectable discrete position.

19. The connector of claim 18, wherein the retention means on the front housing further includes a second recess defined by a third tooth and a fourth tooth extending from the internal surface of the front housing into the bore of the front housing, the second recess engaging one of the plurality of teeth at each of the selectable discrete positions.

16. A fiber optic connector comprising:

a ferrule;

a hub retainably engaging the ferrule;

a rear housing having an external surface and a bore for rotationally retaining the hub;

a front housing having a bore with an internal surface for receiving and engaging the external surface of the rear housing; and

retention means on each of the front and rear housings for rotationally engaging the front housing to the rear housing at one of selectable discrete positions defined by the retention means.

20. A fiber optic connector comprising:

a ferrule having a front end and an opposite rear end;

a hub retainably engaging the ferrule;

an inner housing having a first part and a second part, wherein the hub is rotationally retained by the first part, and the second part is rotatable relative to the first part between selectable discrete positions, the inner housing having a front end and a rear end, the front end of the ferrule positioned adjacent the front end of the inner housing, the hub longitudinally movable relative to the inner housing;

a spring biasing the hub toward the front end of the inner housing; and

an outer housing engageable with the inner housing, wherein the outer housing locks the second part to the first part at one of the selectable discrete positions.

21. The connector of claim 20, wherein each of the first and second parts includes an engagement member, and wherein the selectable discrete positions are defined by engagement between the engagement member on the first part and the engagement member on the second part.

22. The connector of claim 21, wherein the first part includes an external surface and a plurality of engagement members extending around a circumference of the external surface, and the second part includes an internal surface having a corresponding engagement member, wherein the first part is rotatable within the second part, and wherein the rotation of the first part within the second part sequentially engages each of the plurality of engagement members with the corresponding engagement member, each sequential engagement defining a selectable discrete position.

23. The connector of claim 21, the first part further includes an external surface, wherein the engagement member on the first part includes a plurality of teeth extending from the external surface around a circumference of the first part, and wherein the engagement member on the second part includes a recess, the recess defined by a first tooth and a second tooth extending from an internal surface of the second part, wherein the first part is rotatable within the second part, and wherein rotation of the first part within the second part sequentially engages each of the plurality of teeth within the recess, the engagement of each of the plurality of teeth within the recess defining a selectable discrete position.

24. The connector of claim 23, wherein the engagement member on the second part further includes a second recess defined by a third tooth and a fourth tooth extending from the internal surface of the second part, the second recess engaging one of the plurality of teeth at each of the selectable discrete positions.

26. The method of claim 25, wherein the connector is an SC-type connector.

27. The method of claim 25, further including the step of inserting the front housing within a grip, wherein the grip locks the rear housing to the front housing at one of the selectable discrete positions.

28. The method of claim 25, wherein the rear housing includes an external surface with a plurality of engagement members circumferentially positioned on the external surface, and the front housing includes a bore with a corresponding engagement member, wherein rotating the rear housing within the bore of the front housing sequentially engages each of the plurality of engagement members with the corresponding engagement member, each sequential engagement defining a selectable discrete position.

29. The method of claim 28, wherein the engagement members include a plurality of teeth, and the corresponding engagement member on the front housing is a recess defined by a first tooth and a second tooth, wherein each of the plurality of teeth sequentially engages the recess when the rear housing is rotated within the front housing.

30. The method of claim 25, further including the step of locking the front housing to the rear housing at one of the selectable discrete positions.

31. The method of claim 30, wherein the rear housing includes an external surface with a plurality of engagement members circumferentially positioned on the external surface, and the front housing includes a bore with a corresponding engagement member, wherein rotating the rear housing within the bore of the front housing sequentially engages each of the plurality of engagement members with the corresponding engagement member, each sequential engagement defining a selectable discrete position.

32. The method of claim 31, wherein the engagement members include a plurality of teeth, and the corresponding engagement member on the front housing is a recess defined by a first tooth and a second tooth, wherein each of the plurality of teeth sequentially engages the recess when the rear housing is rotated within the front housing.

25. A method of assembling a fiber optic connector, the method comprising the steps of:

providing a ferrule extending from a hub, the hub retainably engaging the ferrule;

positioning the hub within a bore of a rear housing to prevent rotational movement of the hub with respect to the rear housing;

inserting the rear housing into a bore of a front housing; and

rotating the rear housing within the front housing between selectable discrete positions.

33. A fiber optic device comprising:

a connector having a hub retainably engaging a ferrule, a rear housing rotationally retaining the hub, a front housing having a bore for receiving and engaging the rear housing, and an engagement mechanism between the front and rear housing matable in a plurality of selectable discrete positions, wherein the rear housing is rotatable within the bore of the front housing between the selectable discrete positions; and

a fiber optic cable connected to the connector, the cable including a fiber extending through the connector.

34. The device of claim 33, wherein the connector is an SC-type connector.

35. The device of claim 33, wherein the rear housing has an external surface and a plurality of engagement members extending around a circumference of the external surface, and the front housing has an internal surface including a corresponding engagement member, wherein rotation of the rear housing within the bore of the front housing sequentially engages each of the plurality of engagement members with the corresponding engagement feature, each sequential engagement defining a selectable discrete position.

36. The device of claim 35, wherein the plurality of engagement members on the rear housing are teeth, and the corresponding engagement member is a recess defined by a first tooth and a second tooth, wherein rotation of the rear housing within the front housing sequentially engages each of the plurality of teeth within the recess, each engagement defining one of the selectable discrete positions.

37. The device of claim 33, further including a grip engaging the front housing, the grip locking the front housing to the rear housing at one of the selectable discrete positions.

38. The device of claim 37, wherein the rear housing has an external surface and a plurality of engagement members extending around a circumference of the external surface, and the front housing has an internal surface including a corresponding engagement member, wherein rotation of the rear housing within the bore of the front housing sequentially engages each of the plurality of engagement members with the corresponding engagement feature, each sequential engagement defining a selectable discrete position.

39. The device of claim 38, wherein the plurality of engagement members on the rear housing are teeth, and the corresponding engagement member is a recess defined by a first tooth and a second tooth, wherein rotation of the rear housing within the front housing sequentially engages each of the plurality of teeth within the recess, each engagement defining one of the selectable discrete positions.