Pushable MPO connector

Patent metadata

Field	Value
Publication number	US-12085765-B2
Application number	US-202217567877-A
Country	US
Kind code	B2
Filing date	Jan 3, 2022
Priority date	Dec 31, 2020
Publication date	Sep 10, 2024
Grant date	Sep 10, 2024

Abstract

A fiber optic connector includes a ferrule, a ferrule adapter configured to be coupled with the ferrule, and a retention body configured to be coupled with a multi-fiber cable. The ferrule is configured to terminate a plurality of fibers of a multi-fiber cable and is configured with a cross-sectional profile smaller than a ferrule of a multi-fiber push on (MPO) connector such that the ferrule is configured to be pushed through a duct having an inside diameter smaller than a cross-sectional profile of the ferrule of the MPO connector. The ferrule adapter and the ferrule cooperate to define a ferrule interface configured to mate with ferrule of the MPO connector. The ferrule is configured to include external channels at opposing laterals sides of the ferrule. The ferrule adapter is configured to include channels that oppose the external channels of the ferrule. The channels of the ferrule adapter and the external channels of the ferrule are configured to cooperate to define a pair of bores configured to receive a pair of external pins. The bores are configured to receive a pair of pins from the mating MPO connector.

First claim

What is claimed is:

1. A fiber optic connector comprising:
a ferrule portion configured to terminate a plurality of fibers of a fiber optic cable;
an adapter portion structurally configured to receive the ferrule portion;
a body portion structurally configured to be coupled with a multi-fiber cable;
a biasing portion configured to urge the adapter portion toward a rearward facing surface of the ferrule portion;
a retaining portion disposed between the biasing portion and the adapter portion;
a housing portion structurally configured to be coupled with the body portion;
wherein the adapter portion is configured to be inserted into a rearward end of the housing portion between the ferrule portion and the biasing portion;
wherein the adapter portion and the ferrule portion are configured to move axially relative to the housing portion and the body portion against an urging force of the biasing portion;
wherein the adapter portion and the ferrule portion are configured to cooperate to define a ferrule interface configured to mate with a ferrule of a multi-fiber push on (MPO) connector;
wherein the ferrule portion is configured to include external channels at opposing lateral sides of the ferrule;
wherein the adapter portion is configured to include channels that oppose the external channels of the ferrule;
wherein the retaining portion is structurally configured to retain a pair of pins;
wherein the channels of the adapter portion and the external channels of the ferrule portion are configured to cooperate to define a pair of bores configured to receive the pair of pins;
wherein the biasing portion is configured to urge the retaining portion toward the adapter portion;
wherein the bores are configured to receive a pair of pins from a mating MPO connector;
wherein the ferrule portion is configured with a cross-sectional profile that is smaller than a ferrule of an MPO connector such that the ferrule portion is configured to be pushed through a duct having an inside diameter smaller than a cross-sectional profile of a ferrule of an MPO connector;
wherein the adapter portion is configured with a cross-sectional profile that is larger than a cross-sectional profile of the ferrule such that the adapter portion is prevented from being pushed through the duct coupled with the ferrule portion; and
wherein the adapter portion is configured to be coupled with the ferrule portion after the ferrule portion and the terminated plurality of fibers are pushed through the duct so as to provide a field-assembled MPO connector.

2. The fiber optic connector of claim 1 , further comprising a shell portion structurally configured to be coupled with the housing portion.

3. The fiber optic connector of claim 2 , wherein the shell portion is configured to house a pair of biasing members bearing against a forward facing surface of the housing portion and a rearward facing surface of the shell portion to urge the shell portion in the forward direction.

4. The fiber optic connector of claim 3 , wherein the connector is configured to be disconnected from a mating adapter by urging the shell portion in a rearward direction against a biasing force of the pair of biasing members, thereby transferring such urging force to the housing portion rather than the cable.

5. The fiber optic connector of claim 1 , wherein the body portion includes two retention body halves configured to be coupled with one another.

6. The fiber optic connector of claim 5 , wherein the two retention body halves are configured to be coupled with the terminated plurality of fibers after the ferrule portion and the terminated plurality of fibers are pushed through the duct.

7. The fiber optic connector of claim 1 , wherein the adapter portion and the housing portion are configured to limit a range of axial movement of the ferrule portion relative to the body portion.

8. The fiber optic connector of claim 1 , wherein the biasing portion comprises a coil spring configured to extend about the fibers of the multi-fiber cable.

9. The fiber optic connector of claim 1 , wherein the biasing portion is configured to be compressed between a forward facing surface of the body portion and a rearward facing surface of the adapter portion.

10. The fiber optic connector of claim 1 , wherein the body portion is configured to be coupled with the multi-fiber cable via a crimp portion configured to be crimped onto the multi-fiber cable.

11. A fiber optic connector comprising:
a ferrule portion configured to terminate a plurality of fibers of a fiber optic cable;
an adapter portion structurally configured to receive the ferrule portion;
a body portion structurally configured to be coupled with a multi-fiber cable;
a biasing portion configured to urge the adapter portion toward a rearward facing surface of the ferrule portion;
a housing portion structurally configured to be coupled with the body portion;
wherein the adapter portion is configured to be inserted into a rearward end of the housing portion between the ferrule portion and the biasing portion;
wherein the adapter portion and the ferrule portion are configured to move axially relative to the housing portion and the body portion against an urging force of the biasing portion;
wherein the adapter portion and the ferrule portion are configured to cooperate to define a ferrule interface configured to mate with a ferrule of a multi-fiber push on (MPO) connector;
wherein the ferrule portion is configured to include external channels at opposing lateral sides of the ferrule;
wherein the adapter portion is configured to include channels that oppose the external channels of the ferrule;
wherein the channels of the adapter portion and the external channels of the ferrule portion are configured to cooperate to define a pair of bores configured to receive the pair of pins;
wherein the ferrule portion is configured with a cross-sectional profile that is smaller than a ferrule of an MPO connector such that the ferrule portion is configured to be pushed through a duct having an inside diameter smaller than a cross-sectional profile of a ferrule of an MPO connector;
wherein the adapter portion is configured with a cross-sectional profile that is larger than a cross-sectional profile of the ferrule such that the adapter portion is prevented from being pushed through the duct coupled with the ferrule portion; and
wherein the adapter portion is configured to be coupled with the ferrule portion after the ferrule portion and the terminated plurality of fibers are pushed through the duct so as to provide a field-assembled MPO connector.

12. The fiber optic connector of claim 11 , further comprising a retaining portion disposed between the biasing portion and the adapter portion and structurally configured to retain the pair of pins.

13. The fiber optic connector of claim 12 , wherein the biasing portion is configured to urge the retaining portion toward the adapter portion.

14. The fiber optic connector of claim 11 , further comprising a shell portion structurally configured to be coupled with the housing portion.

15. The fiber optic connector of claim 14 , wherein the shell portion is configured to house a pair of biasing members bearing against a forward facing surface of the housing portion and a rearward facing surface of the shell portion to urge the shell portion in the forward direction.

16. The fiber optic connector of claim 15 , wherein the connector is configured to be disconnected from a mating adapter by urging the shell portion in a rearward direction against a biasing force of the pair of biasing

Assignees

• Ppc Broadband Fiber Ltd

Inventors

• Leeson Kim
• Etheridge Harvey
• Trezise Shaun

Classifications

• G02B6/3825 Primary

  with an intermediate part, e.g. adapter, receptacle, linking two plugs · CPC title

• G02B6/3885 Primary

  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

• G02B6/387

  Connector plugs comprising two complementary members, e.g. shells, caps, covers, locked together · CPC title

• G02B6/3857

  Crimping, i.e. involving plastic deformation · CPC title

• G02B6/3821

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