Quick-release fiber-optic connector

• US 4,268,115 A
• Filed: 06/01/1979
• Issued: 05/19/1981
• Est. Priority Date: 06/01/1979
• Status: Expired due to Term

• Current Assignee: Honeywell Incorporated (Honeywell International Inc.)
• Original Assignee: Tetra Tech Incorporated
• Inventors: Slemon, Charles S., Braun, Steven W.
• Primary Examiner(s): Levy, Stewart J.
• Application Number:
  US06/044,575
• Time in Patent Office: 718 Days
• Field of Search: 350/96.20, 350/96.21, 350/96.22
• US Class Current: 385/88
• CPC Class Codes: G02B 6/3825 with an intermediate part, e.g. adapter, receptacle, linking two plugs
• CPC Class Codes: G02B 6/3834 Means for centering or aligning the light guide within the ferrule
• CPC Class Codes: G02B 6/3869 Mounting ferrules to connector body, i.e. plugs
• CPC Class Codes: G02B 6/3893 Push-pull type, e.g. snap-in, push-on
• CPC Class Codes: G02B 6/4292 the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements

Abstract

A metal ferrule is attached to the end of an optic fiber, with the ferrule end and fiber tip coplanar. The ferrule and fiber are slidably mounted in a housing which incorporates a quick-release connecting catch, and are abutted by spring-loading against a mating optical device. The catch is adapted to engage a fitting secured to the mating optical device.

Claims

1. A connector, for use in presenting the tip of a sheathed optic fiber to a mating optical device for light transmission between such tip and such device, the connector comprising:

a fitting adapted to be affixed to such mating optical device;

a ferrule, adapted to be affixed to the end of such optic fiber, the ferrule defining;

a cavity which penetrates completely through the ferrule and is adapted to accept such fiber, whereby the tip of such fiber may be exposed flush with one end of the ferrule; and

a first spring anchor;

a connector body guiding the ferrule and having a quick-release connecting catch that is adapted to engage the fitting, whereby the connector body may be held in fixed relation to such mating optical device, the said catch comprising;

a hook which is carried by the connector body, formed to engage the fitting, and spring-loaded toward engagement with the fitting; and

manipulable means for retracting the hook, against the spring-loading, to disengage the hook from the fitting;

the manipulable hook-retracting means comprising a housing which at least partly covers the connector body and is slidably mounted thereto, and which defines an aperture through which the hook extends;

the connector body being slit in such relation to the hook as to form a spring which urges the hook outward through such aperture and toward engagement with the fitting; and

the hook being shaped for retraction into the housing in response to sliding manipulation of the housing;

a second spring anchor secured to the connector body; and

spring means engaging the two anchors and adapted to urge the said one end of the ferrule toward such mating optical device.

2. The connector of claim 1 wherein the outer surface of the ferrule along part of its length is relieved to accommodate inward motion of the slit spring portion of the body when the hook is retracted by manipulation of the housing.

3. The connector of claim 1 wherein:

the connector body is slit in a plurality of locations to form a plurality of springs each having a said hook thereon; and

the housing has a plurality of said apertures, through one of which, respectively, each said hook extends and is outwardly urged by said respective spring.

4. The connector of claim 3, wherein the outer surface of the ferrule along part of its length is relieved to accommodate inward motion of the slit spring portions of the body when the hooks are retracted by manipulation of the housing.

5. A connector, for use in presenting the tip of an optic fiber to a mating optical device for light transmission between such tip and such device, the connector comprising:

a ferrule, adapted to be affixed to the end of such optic fiber, the ferrule defining;

a cavity which penetrates completely through the ferrule and has permanently affixed within it a section of miniature steel tubing adapted to hold such optic fiber, whereby the tip of such fiber may be exposed flush with one end of the ferrule; and

a first spring anchor;

a connector body guiding the ferrule and comprising a quick-release connecting catch;

a fitting adapted to be affixed to such mating optical device and adapted to engage the catch, whereby the connector body may be held in fixed relation to such device;

a second spring anchor secured to the connector body; and

spring means engaging the two anchors and adapted to urge the said one end of the ferrule toward such mating optical device.

6. A connector, for use in presenting the tip of a sheathed optic fiber to a mating optical device for light transmission between such tip and such device, the connector comprising:

a ferrule, adapted to be affixed to the end of such optic fiber, the ferrule defining;

a cavity which penetrates completely through the ferrule and is adapted to accept such fiber, whereby the tip of such fiber may be exposed flush with one end of the ferrule; and

a first spring anchor;

a connector body guiding the ferrule and comprising a quick-release connecting catch;

a fitting adapted to be affixed to such mating optical device and adapted to engage the catch, whereby the connector body may be held in fixed relation to such device;

a second spring anchor secured to the connector body; and

spring means engaging the two anchors and adapted to urge the said one end of the ferrule toward and into positive abutment with such mating optical device when the fitting is affixed to such device and is engaging the connector-body catch; and

wherein;

the ferrule has a longitudinal axis, and defines an outer guide surface parallel to that axis; and

the fitting defines a guide cavity adapted to accept and slidably engage the outer guide surface without longitudinally restraining the ferrule; and

when the fitting is affixed to such device and is engaging the connector-body catch, the connector body does not longitudinally restrain the ferrule.

7. The connector of claim 6, wherein the catch comprises:

a hook which is carried by the connector body, formed to engage the fitting, and spring-loaded toward engagement with the fitting; and

means manipulable to retract the hook, against the spring-loading, to disengage the hook from the fitting.

8. A connector, for use in presenting the tip of a sheathed optic fiber to a mating optical device for light transmission between such tip and such device, the connector comprising:

a ferrule, adapted to be affixed to the end of such optic fiber, the ferrule having a longitudinal axis and defining;

a cavity which penetrates completely through the ferrule and is adapted to accept such fiber, whereby the tip of such fiber may be exposed flush with one end of the ferrule;

a first spring anchor; and

an outer guide surface parallel to the ferrule longitudinal axis;

a connector body guiding the ferrule and comprising a quick-release connecting catch;

a fitting adapted;

to be affixed to such mating optical device;

to engage the catch, whereby the connector body may be held in fixed relation to such device; and

to accept and slidably engage the outer guide surface of the ferrule, without longitudinally restraining the ferrule;

a second spring anchor on the connector body; and

spring means engaging the two anchors and adapted to urge the said one end of the ferrule toward such mating optical device when the fitting is affixed to such device and is engaging the connector-body catch; and

said connector body does not longitudinally restrain the ferrule when the fitting is affixed to such mating device and is engaging the catch.

9. The connector of claim 8, wherein the catch comprises:

a hook which is carried by the connector body, formed to engage the fitting, and spring-loaded toward engagement with the fitting; and

manipulable means for retracting the hook, against the spring-loading, to disengage the hook from the fitting.