Optical fiber connector and method of assembling the same on site

Patent metadata

Field	Value
Publication number	US-12287518-B2
Application number	US-202217862842-A
Country	US
Kind code	B2
Filing date	Jul 12, 2022
Priority date	Jul 9, 2014
Publication date	Apr 29, 2025
Grant date	Apr 29, 2025

Abstract

The present disclosure provides an optical fiber connector, comprising an integrated ferrule assembly and an integrated outer housing assembly, the ferrule assembly being adapted to be fitted into the housing assembly. The ferrule assembly at least comprises an inner housing, a spring, a multi-hole ferrule, a multi-fiber optical cable, a sleeve and a thermal shrinkable tube. The housing assembly at least comprises an outer housing, an outer tail tube and an outer protection cap. In the present disclosure, a plurality of components such as the inner housing, the spring, the multi-hole ferrule, multi-fiber optical cable, the sleeve, the thermal shrinkable tube and the like can be preassembled into an integrated ferrule assembly, and a plurality of components such as the outer housing, the outer tail tube, the outer protection cap and the like can be preassembled into an integrated outer housing assembly; then, a worker only needs to insert the integrated ferrule assembly into the integrated outer housing assembly on site, thereby completing assembling operation of the whole optical fiber connector conveniently and quickly.

First claim

What is claimed is:

1. An optical fiber connector extending from a front of the connector to a back of the connector, comprising:
an integrated ferrule assembly, including:
an inner housing extending from an open rear end of the inner housing to an open front end of the inner housing, the inner housing including a first snapping component;
a ferrule mounted in the inner housing at the front end of the inner housing, the ferrule including a plurality of through holes; and
a plurality of optical fibers fixed in the plurality of through holes; and

an integrated outer housing assembly, including:
an outer housing extending from an open front end of the outer housing to an open rear end of the outer housing, the outer housing including a second snapping component; and
an outer protection cap in front of the open front end of the outer housing and covering the open front end of the outer housing,

wherein the integrated ferrule assembly is configured to be forwardly sleeved into the integrated outer housing assembly through the open rear end of the outer housing such that the first snapping component and the second snapping component snap together to connect the integrated ferrule assembly and the integrated outer housing assembly.

2. The optical fiber connector of claim 1 , wherein the integrated ferrule assembly includes a spring compressed by the ferrule.

3. The optical fiber connector of claim 1 ,
wherein one of the first snapping component and the second snapping component includes a protrusion; and
wherein the other of the first snapping component and the second snapping component includes a recess configured to snappingly receive the protrusion.

4. The optical fiber connector of claim 3 , wherein the first snapping component includes the protrusion and the second snapping component includes the recess.

5. The optical fiber connector of claim 1 , further comprising a component configured to be secured to the inner housing to cover a front end face of the ferrule.

6. The optical fiber connector of claim 5 , wherein the component includes a traction component having an internal thread configured to be threaded onto an external thread of the inner housing.

7. The optical fiber connector of claim 5 , wherein the component is cylindrical.

8. The optical fiber connector of claim 1 , wherein the inner housing includes an opening at the open front end of the inner housing through which the optical fibers pass, the opening having an elongate dimension.

9. The optical fiber connector of claim 1 , wherein the integrated ferrule assembly includes alignment pins extending through alignment pin holes of the ferrule.

10. The optical fiber connector of claim 1 , wherein the outer protection cap is secured to the outer housing.

11. The optical fiber connector of claim 10 , wherein the outer protection cap includes an internal thread configured to be threaded onto an external thread of the outer housing at the front end of the outer housing.

12. The optical fiber connector of claim 1 , wherein the inner housing includes two half housings configured to snap together.

13. A method of assembling an optical fiber connector, comprising the steps of:
(a) assembling an integrated ferrule assembly, the integrated ferrule assembly including:
an inner housing including a first snapping component;
a ferrule mounted in the inner housing at a front end of the inner housing, the ferrule including a plurality of through holes; and
a plurality of optical fibers fixed in the plurality of through holes;

(b) subsequent to (a), securing a component to the inner housing to provide a subassembly and to cover a front end face of ferrule;
(c) subsequent to (b), forwardly passing the subassembly through an elongated pipe;
(d) assembling an integrated outer housing assembly, the integrated outer housing assembly including:
an outer housing defining a front opening at a front end of the outer housing and a rear opening at a rear end of the outer housing, the outer housing including a second snapping component; and
an outer protection cap covering the front opening;

(e) subsequent to (c), removing the component from the inner housing; and
(f) subsequent to (c), (d), and (e), forwardly sleeving the integrated ferrule assembly through the rear opening of the outer housing into the integrated outer housing assembly until the first snapping component and the second snapping component snap together to connect the integrated ferrule assembly and the integrated outer housing assembly.

14. The method of claim 13 ,
wherein (d) is performed subsequent to (c);
wherein (b) includes screwing the component onto the inner housing;
wherein (e) includes unscrewing the component from the inner housing, the method further comprising:
(g) subsequent to (f), removing the outer protection cap from the integrated outer housing assembly.

15. An optical fiber connector extending from a front of the connector to a back of the connector, comprising:
an optical cable including a plurality of optical fibers; and
an integrated ferrule assembly, including:
an inner housing extending from an open rear end of the inner housing to an open front end of the inner housing, the inner housing including a snapping component and an external thread;
a ferrule mounted in the inner housing at the front end of the inner housing, the ferrule including a plurality of through holes;
a spring positioned within the inner housing and compressed by the ferrule;
an annular seal ring fully surrounding the inner housing;
an inner tail sleeve positioned on the open rear end of the inner housing; and
a thermal shrinkable tube thermally shrunk over the inner tail sleeve and a section of a cable supporting the plurality of optical fibers,

wherein the plurality of optical fibers are fixed in the plurality of through holes; and
wherein the integrated ferrule assembly is configured to be forwardly sleeved into another assembly such that the snapping component and another snapping component of the another assembly snap together to connect the integrated ferrule assembly and the another assembly.

16. The optical fiber connector of claim 15 , wherein the another assembly includes an integrated outer housing assembly.

Assignees

• Commscope Telecommunications Shanghai Co Ltd

Inventors

• Tong Zhaoyang
• Cheng Xingjun
• Liu Lei
• Qi longzhou

Classifications

• G02B6/3882

  using rods, pins or balls to align a pair of ferrule ends · CPC title

• G02B6/3821

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

• G02B6/387

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

• G02B6/3869

  Mounting ferrules to connector body, i.e. plugs · CPC title

• G02B6/3849

  using mechanical protective elements, e.g. caps, hoods, sealing membranes (G02B6/3816 takes precedence; provisionally see H01R13/44) · CPC title