SMALL FORM FACTOR, FIELD-INSTALLABLE OPTICAL FIBER CONNECTOR

• US 20090092360A1
• Filed: 10/09/2007
• Published: 04/09/2009
• Est. Priority Date: 10/09/2007
• Status: Active Grant

• Current Assignee: Protai Photonic Co., Ltd., SENKO Advanced Components, Inc. (SENKO Group Holdings Co., Ltd.)
• Original Assignee: Protai Photonic Co., Ltd., SENKO Advanced Components, Inc. (SENKO Group Holdings Co., Ltd.)
• Inventors: Lin, I En, Mamiya, Tomoyuki
• Granted Patent: US 7,513,695 B1
• Time in Patent Office: Days
• US Class Current: 385/81
• CPC Class Codes: G02B 6/3846 with fibre stubs
• CPC Class Codes: G02B 6/3858 Clamping, i.e. with only elastic deformation

Abstract

An optical fiber connector includes a connector housing, a ferrule and a clamping assembly. The connector hosing has a front end and a rear end. The ferrule is disposed in the connector housing and projects from the front end of the connector housing. The clamping assembly is disposed in the connector housing for mounting the ferrule, and includes a hollow housing and a cam member, wherein the cam member includes a groove adapted to clamp a terminating fiber when a cam effect between the hollow housing and the cam member is generated and further the cam effect causes the groove of the cam member to generate a clamping force.

Claims

1. An optical fiber connector comprising:

a connector housing having a front end and a rear end;

a ferrule disposed in the connector housing and projects from the front end of the connector housing; and

a clamping assembly disposed in the connector housing for mounting the ferrule, and comprising a hollow housing and a cam member, wherein the hollow housing has a rear portion, and the cam member includes;

a groove adapted to clamp a terminating fiber when a cam effect between the hollow housing and the cam member is generated and further the cam effect causes the groove of the cam member to generate a clamping forcer;

a holding portion exposed out from the rear portion of the hollow housing and the rear portion of the connector housing; and

a cylindrical portion physically connected to the holding portion and disposed in the rear portion of the hollow housing.

3. The optical fiber connector as claimed in claim 1, wherein the diameter of the cylindrical portion is equal to the inner diameter of the rear portion of the hollow housing.

4. The optical fiber connector as claimed in claim 1, wherein the hollow housing has an L-shaped opening being a through opening and including a first opening and a second opening, the cylindrical portion is provided with a first protrusion, and the first protrusion is moved along the first and second openings of the L-shaped opening so as to position the cam member.

5. The optical fiber connector as claimed in claim 4, wherein the first protrusion is rectangular or circular lump-shaped protrusion.

6. The optical fiber connector as claimed in claim 4, wherein the height of the first protrusion is not more than the difference between the outer radius and the inner radius of the rear portion of the hollow housing.

7. The optical fiber connector as claimed in claim 4, wherein the cylindrical portion is provided with a second protrusion, and the hollow housing has an inner wall adapted to compress the second protrusion, whereby a cam effect between the hollow housing and the first cam member is generated.

8. The optical fiber connector as claimed in claim 7, wherein the second protrusion is an arc bar-shaped protrusion.

9. The optical fiber connector as claimed in claim 7, wherein the height of the first protrusion is more than the height of the second protrusion.

10. The optical fiber connector as claimed in claim 7, wherein the height of the second protrusion is not more than a half of the difference between the outer radius and the inner radius of the rear portion of the hollow housing.

11. The optical fiber connector as claimed in claim 7, wherein the groove is a U-shaped groove.

12. The optical fiber connector as claimed in claim 11, wherein the U-shaped groove passes through a half of volumes of the cylindrical portion and the holding portion, respectively.

13. The optical fiber connector as claimed in claim 11, wherein the U-shaped groove includes a first bottom, which has a space is equal to the volume of the terminating fiber.

14. The optical fiber connector as claimed in claim 13, wherein the U-shaped groove further includes a second bottom, which is bigger than the space of the first bottom.

15. The optical fiber connector as claimed in claim 11, wherein a predetermined angle is formed between the orientations the U-shaped groove and the second protrusion, wherein the predetermined angle affects the clamping force.

16. The optical fiber connector as claimed in claim 15, wherein the predetermined angle is not more than 71.5 degrees.

17. The optical fiber connector as claimed in claim 11, wherein the cam member further includes a sheet element, which is put in the U-shaped groove and contacts the terminating fiber.

18. The optical fiber connector as claimed in claim 17, wherein the size of the sheet element is not bigger than the size of the U-shaped groove.

19. The optical fiber connector as claimed in claim 18, wherein the width of the sheet element is not bigger than the difference between the depth of the U-shaped groove and the diameter of the terminating fiber.

20. The optical fiber connector as claimed in claim 18, wherein the width of the sheet element is bigger than the difference between the depth of the U-shaped groove and the diameter of the terminating fiber.

21. The optical fiber connector as claimed in claim 18, wherein the thickness of the sheet element is equal to a half of the distance between the two sides of the U-shaped groove.

22. The optical fiber connector as claimed in claim 11, wherein the cam member further includes a sheet element, which is put in the U-shaped groove and contacts the terminating fiber, and the width of the sheet element is bigger than the difference between the depth of the U-shaped groove and the diameter of the terminating fiber.

23. The optical fiber connector as claimed in claim 7, wherein the groove is a through groove.

24. The optical fiber connector as claimed in claim 23, wherein the through groove passes through all volumes of the cylindrical portion and the holding portion, respectively.

25. The optical fiber connector as claimed in claim 23, wherein the cylindrical portion and the holding portion are constituted by a first portion and a second portion.

26. The optical fiber connector as claimed in claim 1, further comprising:

a resilient member disposed in the connector housing and enclosing the hollow housing; and

an insert member disposed in the rear end of the connector housing and exposing out a part of the clamping assembly, wherein during assembly of the optical fiber connector the resilient member adapted to press to bias the ferrule and the clamping assembly forward.

27. The optical fiber connector as claimed in claim 1, further comprising:

a fiber stub mounted in the ferrule.

2. (canceled)