Fiber optic connector and connector sleeve assembly

• US 5,971,626 A
• Filed: 08/29/1997
• Issued: 10/26/1999
• Est. Priority Date: 08/29/1997
• Status: Expired due to Term

• Current Assignee: CCS Holdings, Inc (Corning Incorporated)
• Original Assignee: Siecor Corporation (Corning Incorporated)
• Inventors: Knodell, Thomas G., de Jong, Michael
• Primary Examiner(s): NGO, HUNG NHAT
• Application Number:
  US08/920,597
• Time in Patent Office: 788 Days
• Field of Search: 385/60, 385/61, 385/62, 385/66, 385/67, 385/68, 385/72, 385/78, 385/79, 385/80, 385/81, 385/84
• US Class Current: 385/60
• CPC Class Codes: G02B 6/3825 with an intermediate part, e.g. adapter, receptacle, linking two plugs
• CPC Class Codes: G02B 6/3835 using discs, bushings or the like
• CPC Class Codes: G02B 6/3874 using tubes, sleeves to align ferrules
• CPC Class Codes: G02B 6/3891 Bayonet type

Abstract

The present invention provides a connector and connector sleeve assembly comprising a connector with reduced parts that is received in one side of the connector sleeve. The connector has a bayonet style protrusion that is received in a bayonet cut-out in the connector sleeve. The other side of the connector sleeve is configured to receive a standard connector design such as an SC connector or an ST type connector. The connector has an enlarged portion for being gripped by fingers such that the reduced part connector can be readily connected and disconnected from the connector sleeve in tight spaces.

Claims

1. A connector and connector sleeve assembly comprising:

(a) a connector sleeve with a first half and a second half and a ferrule alignment portion spanning from the first half to the second half, the first half configured to operatively connect and disconnect with a first fiber optic connector of a first design, the second half of the connector sleeve having a cylindrical sleeve portion defining a second receptacle; and

(b) a second connector having a second design that is different from the first design, the connector having an optical fiber ferrule portion with an end face and a body portion rearward of the end face of the ferrule, the body portion and the ferrule portion being fixed relative to each other, the body portion removably engaged with the sleeve portion of the second half such that the end face of the ferrule portion is disposed in the ferrule alignment portion of the connector sleeve and fixed relative to the connector sleeve, the body portion having an enlarged portion grippable by fingers such that the second connector is readily removable from the second receptacle without a tool.

2. The assembly of claim 1 further comprising a ferrule alignment sleeve disposed in the alignment sleeve portion and spanning from the first half to the second half and positioned to receive two ferrules therein.

3. The assembly of claim 2 wherein the second receptacle is sized to allow sliding of the ferrule alignment sleeve therethrough into the alignment sleeve portion and wherein the connector sleeve defines a shoulder surface facing axially toward the alignment sleeve portion to axially capture the alignment sleeve on the side toward the first half of the connector sleeve.

4. The assembly of claim 1 farther comprising the first connector operatively connected to the first half of the connector sleeve.

5. The assembly of claim 4 wherein the first connector has a ferrule spring mounted in a housing and the housing connected to the connector sleeve such that the ferrule end face is disposed in the ferrule alignment portion against the end face of the ferrule portion of the second connector and wherein the ferrule of the first connector is movable in the axial direction relative to the connector sleeve against the spring force upon connection of the first connector such that the end faces of the ferrule and the ferrule portion are biased against each other.

6. The assembly of claim 1 wherein the sleeve portion of the second half defines a bayonet cut-out with at least an axial extending portion and a circumferentially extending portion and wherein the body portion of the second connector has a protrusion extending radially outward and is slidable through the bayonet cut-out to removably connect the body portion to the sleeve portion of the second half.

7. The assembly of claim 6 wherein the sleeve portion defines two diametrically opposed bayonet cut-outs and the second connector had two diametrically opposed protrusions.

8. The assembly of claim 1 wherein the grippable portion is generally tab shaped having opposed concave surfaces to facilitate gripping.

9. The assembly of claim 1 wherein the second connector is of one-piece molded construction.

10. The assembly of claim 1 wherein the ferrule portion of the second connector is a separate piece from the body portion and wherein the body portion defines a ferrule bore extending axially therein for receiving the ferrule therein and wherein the ferrule portion is fixed in the ferrule bore of the body portion.

11. The assembly of claim 10 wherein the body portion if made of a polymer material and the ferrule portion is of a different more precise polymer material than the body portion and the ferrule portion is ultrasonically welded in the ferrule bore.

12. The assembly of claim 10 wherein the ferrule portion is of ceramic and the body portion is of a polymer material and the ferrule portion is insert molded in the body portion.

13. The assembly of claim 1 wherein the first half is configured to connect and disconnect to an SC connector.

14. The assembly of claim 13 wherein the connector sleeve has an inner housing with a first half and a second half, the first half having latch arms to engage an SC connector and the second half having a sleeve portion defining a bayonet cut-out with at least an axially extending portion and a circumferentially extending portion and wherein the body portion of the second connector has a protrusion extending radially outward to be received in the bayonet cut-out upon insertion of the second connector in the sleeve portion of the second half.

15. The assembly of claim 14 wherein the connector sleeve further comprises an outer housing that receives the inner housing therein, the outer housing having a first half for receiving an SC connector therein and a second half having a pair of outer latch arms, and wherein the second half of the inner housing has flange portions extending radially outward to be captured by the outer latch arms of the second half of the outer housing.

16. The assembly of claim 14 wherein the inner housing is of one piece construction and the outer housing is of one piece construction and the inner housing is snap fit in the outer housing.

17. The assembly of claim 16 wherein the inner housing can be removed from the outer housing.

18. The assembly of claim 1 wherein the first half of the connector sleeve is configured to connect and disconnect to an ST type connector and wherein the second half of the connector sleeve has a sleeve portion defining a bayonet cut-out having at least an axially extending portion and a circumferentially extending portion and wherein body portion of the second connector has a protrusion extending radially outward and is slidably received in the bayonet cut-out to connect the second connector to the sleeve portion of the second half of the connector sleeve.

19. A fiber optic connector, comprising:

a ferrule portion having an end face and defining a ferrule bore longitudinally therethrough to receive an optical fiber for termination at the end face;

a body portion rearward of the end face of the ferrule and fixed to the ferrule portion, the body portion having an enlarged portion of a generally paddle shape to facilitate gripping of the enlarged portion by finger, the body portion defining an axial passageway therethrough that communicates with the ferrule bore to receive an optical fiber therethrough for insertion into the ferrule bore.

20. The connector of claim 19 wherein the enlarged portion has opposed concave surfaces to facilitate finger gripping.

21. The connector of claim 19 wherein the body portion has a protrusion extending radially outward to cooperate and rotate in a bayonet cut-out of a connector sleeve.

22. The connector of claim 19 wherein the connector is of one-piece molded construction.

23. A connector and connector sleeve assembly comprising:

(a) a connector sleeve with a first half and a second half and a ferrule alignment portion spanning from the first half to the second half, the first half configured to operatively connect and disconnect with a first fiber optic connector of a first design, the second half of the connector sleeve having a cylindrical sleeve portion defining a second receptacle, the sleeve portion defining a bayonet cut-out with at least an axially extending portion and a circumferentially extending portion; and

(b) a second connector having a second design that is different from the first design, the connector having an optical fiber ferrule portion with an end face and a body portion rearward of the end face of the ferrule, the body portion and the ferrule portion being fixed relative to each other, the body portion removably engaged with the sleeve portion of the second half such that the end face of the ferrule portion is disposed in the ferrule alignment portion of the connector sleeve and fixed relative to the connector sleeve, the body portion having a bayonet protrusion extending radially outward for slideable engagement with the bayonet cut-out.

24. A fiber optic connector, comprising:

(a) a ferrule portion having an endface and defining a ferrule bore longitudinally therethrough to receive an optical fiber for termination at the end face;

(b) a body portion rearward of the end face of the ferrule and fixed to the ferrule portion, the body portion defining an axial passageway therethrough for insertion into the ferrule bore, the body portion having a protrusion extending radially outward to cooperate and rotate in a bayonet cut-out defined in a connector sleeve.