Fiber optic adapter with integrally molded ferrule alignment structure

Patent metadata

Field	Value
Publication number	US-8992095-B2
Application number	US-201414499594-A
Country	US
Kind code	B2
Filing date	Sep 29, 2014
Priority date	Aug 27, 2008
Publication date	Mar 31, 2015
Grant date	Mar 31, 2015

Abstract

A fiber optic adapter is disclosed. The fiber optic adapter includes a main body configured to receive a first fiber optic connector through a first end and a second fiber optic connector through a second end for mating with the first fiber optic connector. The adapter includes a ferrule alignment structure located within an axial cavity of the main body, the ferrule alignment structure including a sleeve mount and a ferrule sleeve, the sleeve mount including an axial bore and at least one latching hook extending from a center portion of the sleeve mount toward the first end of the main body and at least one latching hook extending from the center portion toward the second end of the main body, the latching hooks configured to flex for releasably latching the first and second fiber optic connectors to the fiber optic adapter. The sleeve mount and the main body of the fiber optic adapter are unitarily molded as a single piece and the ferrule sleeve is separately placed within the axial bore of the sleeve mount.

First claim

What is claimed is:

1. A method of manufacturing a fiber optic adapter for interconnecting two fiber connectors in coaxial alignment, each connector including a generally cylindrical ferrule holding an end of an optical fiber, wherein the adapter includes a main body with an axial cavity defined by a top side-wall, a bottom side-wall, a right side-wall, and a left side-wall, the axial cavity extending between a first opening defined at a first end of the main body and a second opening defined at a second end of the main body, the first end configured to receive a first fiber optic connector through the first opening and the second end configured to receive a second fiber optic connector through the second opening for mating with the first fiber optic connector, wherein the adapter also includes a ferrule alignment structure including a sleeve mount and a ferrule sleeve, the sleeve mount defining a first end, a second end, and a center portion, wherein the first end of the sleeve mount is positioned toward the first end of the main body and the second end of the sleeve mount is positioned toward the second end of the main body, the sleeve mount defining an axial bore that defines a longitudinal axis extending from the first end of the sleeve mount toward the second end of the sleeve mount, the axial bore configured to receive and coaxially align the ferrules of the fiber connectors when the fiber connectors are inserted into the adapter, wherein the sleeve mount includes a first portion extending from the center portion of the sleeve mount toward the first end of the sleeve mount and a second portion extending from the center portion of the sleeve mount toward the second end of the sleeve mount, each of the first and second portions defines an inwardly extending finger for capturing the ferrule sleeve within the axial bore once the sleeve is received within the bore, the method comprising:
molding the main body of the fiber optic adapter and the sleeve mount as a unitary structure using a molding tool wherein parts of the molding tool are pulled apart from the first and second ends of the main body along a direction of the longitudinal axis; and
inserting a ferrule sleeve into the axial bore of the sleeve mount from one of the first end and the second end of the sleeve mount.

2. A method according to claim 1 , further comprising molding the sleeve mount such that at least one of the first portion and the second portion of the sleeve mount defines flexible arms defined around the axial bore of the sleeve mount for receiving a ferrule sleeve, the flexible arms configured to flex out radially to receive the ferrule sleeve into the axial bore after the sleeve mount and the main body have been unitarily molded.

3. A method according to claim 2 , wherein the sleeve mount includes at least three flexible arms.

4. A method according to claim 1 , wherein the main body and the sleeve mount are molded out of a polymer.

5. A method according to claim 1 , wherein the ferrule sleeve is inserted within the axial bore after the main body and the sleeve mount have been unitarily molded.

6. A method according to claim 5 , wherein the adapter includes an outwardly protruding mounting tab on each of the right side-wall and the left side-wall.

7. A method according to claim 1 , further comprising molding the sleeve mount such that the inwardly extending finger of the first portion is positioned around the axial bore at a peripherally offset relationship with respect to the inwardly extending finger of the second portion along the longitudinal axis defined by the axial bore.

8. A method according to claim 7 , further comprising molding three inwardly extending fingers for each of the first portion and the second portion.

9. A method according to claim 1 , wherein the manufactured fiber optic adapter is configured for interconnecting two SC type fiber connectors in coaxial alignment.

10. A method according to claim 1 , further comprising molding the main body and the sleeve mount out of a polymer.

11. A method according to claim 1 , further comprising molding an outwardly protruding mounting tab on each of the right side-wall and the left side-wall of the main body.

Assignees

• Adc Telecommunications Inc

Inventors

• Nelson Keith

Classifications

• G02B6/3869

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

• G02B6/3834

  Means for centering or aligning the light guide within the ferrule · CPC title

• G02B6/3833 Primary

  Details of mounting fibres in ferrules; Assembly methods; Manufacture · CPC title

• G02B6/3865

  fabricated by using moulding techniques (shaping techniques of plastic materials in general B29C; producing plastic optical fiber connectors B29D11/0075) · CPC title

• G02B6/3851

  Ferrules having keying or coding means · CPC title