Fiber optic connectors and multiport assemblies including retention features

Patent metadata

Field	Value
Publication number	US-12298568-B2
Application number	US-202217958600-A
Country	US
Kind code	B2
Filing date	Oct 3, 2022
Priority date	Jun 28, 2017
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

Fiber optic connectors and connectorized fiber optic cables include connector housings having locking portions defined on the connector housing that allow the connector housing to be selectively coupled to a corresponding push-button securing member of a multiport assembly. Methods for selectively connecting a fiber optic connector to and disconnecting the fiber optic connector from the multiport assemblies allow for connector housings to be forcibly and nondestructively removed from the multiport assembly.

First claim

We claim:

1. A fiber optic connector comprising:
a ferrule comprising an optical fiber bore; and
a connector housing, wherein the connector housing comprises:
a longitudinal axis extending from a front of the connector housing to a rear of the connector housing positioned opposite the front;
a nominal housing portion defined on an outer surface of the connector housing;
a front portion of the connector housing comprising a rectangular cross-section having planar sides, and a rearward portion of the connector housing comprising a curved outer surface;

and
a locking portion defined on the outer surface of the connector housing and positioned on the curved outer surface and interrupting the nominal housing portion for securing the optical coupling of the fiber optic connector, wherein
the locking portion comprises a port engagement face that extends inward from the nominal housing portion of the connector housing toward the longitudinal axis and that is oriented transverse to the longitudinal axis, and defines a rearwardly facing cut-out of the connector housing.

2. The fiber optic connector of claim 1 , wherein the locking portion is rotationally discrete on the outer surface of the connector housing.

3. The fiber optic connector of claim 1 , wherein the locking portion comprises a locking portion recess positioned rearward of the port engagement face and inward of the nominal housing portion of the connector housing.

4. The fiber optic connector of claim 1 , wherein the locking portion recess is oriented transverse to the port engagement face and comprises a planar surface extending across at least a portion of the outer surface of the connector housing.

5. The fiber optic connector of claim 4 , wherein the locking portion further comprises a ramp portion positioned rearward of the planar surface and extending outward from the planar surface to the nominal housing portion.

6. The fiber optic connector of claim 5 , wherein the port engagement face lies in a plane that intersects the longitudinal axis at an acute angle α 1 , and the ramp portion is formed as a forward-facing cut-out that lies in a plane that intersects the longitudinal axis at an angle α 2 that is greater than α 1 .

7. The fiber optic connector of claim 1 , wherein the locking portion is positioned on the rearward portion of the connector housing.

8. The fiber optic connector of claim 1 , wherein the nominal housing portion and the locking portion are defined on the outer surface at the rearward portion of the connector housing.

9. The fiber optic connector of claim 1 , wherein the connector housing further comprises a thread extending around the outer surface of the connector housing, the thread defining a pitch evaluated between crests of the thread.

10. The fiber optic connector of claim 1 , wherein the port engagement face comprises an inner end and an outer end positioned outward of the inner end, and wherein the outer end is positioned closer to the front portion of the connector housing than the inner end.

11. The fiber optic connector of claim 10 , wherein the port engagement face defines a plane that intersects the longitudinal axis at an angle that is less than 30 degrees from perpendicular.

12. A fiber optic connector comprising:
a ferrule comprising an optical fiber bore; and
a connector housing, wherein the connector housing comprises:
a longitudinal axis extending from a front of the connector housing to a rear of the connector housing positioned opposite the front;
a nominal housing portion defined on an outer surface of the connector housing; and
a locking portion defined on the outer surface of the connector housing and interrupting the nominal housing portion, wherein
the locking portion comprises a port engagement face that extends inward from the nominal housing portion of the connector housing toward the longitudinal axis and that is oriented transverse to the longitudinal axis for securing the optical coupling of the fiber optic connector, and
the locking portion comprising a locking portion recess positioned rearward of the port engagement face and inward of the nominal housing portion of the connector housing and is obstructed from a leading edge plane of the connector housing along an advancing direction of the fiber optic connector by the port engagement face, and a ramp portion positioned rearward of a planar surface and extending outward from the planar surface to the nominal housing portion, wherein a portion of the outer surface of the connector housing comprises a curved surface and wherein the locking portion is positioned on the curved surface of the outer surface of the connector housing.

13. The fiber optic connector of claim 12 , wherein the port engagement face is a formed as a rearward-facing cut-out that lies in a plane that intersects the longitudinal axis at an acute angle α 1 , and the ramp portion is formed as a forward-facing cut-out that lies in a plane that intersects the longitudinal axis at an angle α 2 that is greater than α 1 .

14. The fiber optic connector of claim 12 , wherein the nominal housing portion and the locking portion are defined on the outer surface rearward of a portion of the connector housing comprising a rectangular cross-section.

15. The fiber optic connector of claim 12 , wherein the connector housing further comprises a thread extending around the outer surface of the connector housing.

16. The fiber optic connector of claim 15 , wherein a pitch of the thread is less than a length of the locking portion recess evaluated in an axial direction along the connector housing.

17. The fiber optic connector of claim 12 , wherein the port engagement face comprises an inner end and an outer end positioned outward of the inner end, and wherein the outer end is positioned closer to a portion of the connector housing comprising a rectangular cross-section than the inner end.

18. The fiber optic connector of claim 17 , wherein the port engagement face defines a plane that intersects the longitudinal axis at an angle that is less than 30 degrees from perpendicular.

19. The fiber optic connector of claim 12 , wherein the port engagement face comprises a locking face that defines a plane that is perpendicular to the longitudinal axis, and a release face positioned outward of the locking portion and that defines a plane that intersects the longitudinal axis at an angle that is less than 30 degrees from perpendicular.

20. The fiber optic connector of claim 12 , wherein a forward portion of the connector housing comprises a rectangular cross-section comprising planar sides, and a rearward portion of the connector housing comprises a curved outer surface.

21. A fiber optic connector coupled to a fiber optic cable, the fiber optic connector comprising:
a ferrule comprising an optical fiber bore; and
a connector housing, wherein the connector housing comprises:
a longitudinal axis extending from a front of the connector housing to a rear of the connector housing positioned opposite the front;
a nominal housing portion defined on an outer surface of the connector housing;
a front portion of the connector housing comprising a rectangular cross-section having planar sides, and a rearward portion of the connector housing comprising a curved outer surface;

and
a locking portion defined on the outer surface of the connector housing and positioned on the curved outer surface and interrupting the nominal housing portion for allowing optical coupling of the fiber optic con

Assignees

• Corning Res & Dev Corp

Inventors

• Dannoux Thierry Luc Alain
• Rosson Joel Christopher
• Scotta Felice
• Wimmer Michael
• Zhang Zhiye

Classifications

• G02B6/3885

  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 title

• G02B6/3895

  identification of connection, e.g. right plug to the right socket or full engagement of the mating parts (keying element on the plug or adapter G02B6/3831; keying element on the ferrule G02B6/3851; keying element for electrical connection H01R13/64) · CPC title

• G02B6/3851

  Ferrules having keying or coding means · CPC title

• G02B6/3871

  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 title

• G02B6/3893

  Push-pull type, e.g. snap-in, push-on · CPC title