Fiber optic connectors and connectorized cable assembly with collapsing cantilevered gasket

Patent metadata

Field	Value
Publication number	US-11099335-B2
Application number	US-202016781232-A
Country	US
Kind code	B2
Filing date	Feb 4, 2020
Priority date	Sep 29, 2017
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

A fiber optic connector that includes a connector body comprising a ferrule retaining portion, a pusher engagement portion and a body cable passage extending through the pusher engagement portion and the ferrule retaining portion. The connector includes a ferrule assembly structurally configured to be retained by the ferrule retaining portion with an optical fiber bore of the ferrule assembly in alignment with the body cable passage. The connector includes a pusher structurally configured to axially engage the pusher engagement portion with a pusher cable passage in alignment with the body cable passage, and a collapsing cantilevered gasket structurally configured to form an axially compressed sealing interface between the connector body and the pusher and an omnidirectionally compressed sealing interface between the gasket and a cable passing through a cable passage of the gasket.

First claim

What is claimed is:

1. A fiber optic connector, comprising:
a connector body comprising a ferrule retaining portion, a pusher engagement portion, and a body cable passage extending from a cable entry end of the connector body to the ferrule retaining portion of the connector body along a longitudinal axis extending through the pusher engagement portion of the connector body and the ferrule retaining portion of the connector body;
a ferrule assembly comprising an optical fiber bore, wherein the ferrule assembly is structurally configured to be retained by the ferrule retaining portion of the connector body with the optical fiber bore of the ferrule assembly in alignment with, or offset from and parallel to, the longitudinal axis of the connector body;
a pusher comprising a pusher cable passage, wherein the pusher is structurally configured to axially engage the pusher engagement portion of the connector body with the pusher cable passage in alignment with the body cable passage of the connector body; and
a collapsing cantilevered gasket comprising a gasket cable passage, an anchored portion formed about the gasket cable passage at a body-engagement end of the gasket, and a cantilevered portion formed about the gasket cable passage at a pusher-engagement end of the gasket, wherein the collapsing cantilevered gasket is structurally configured to form:
an axially compressed sealing interface at the body engagement end of the gasket about the body cable passage, between the cable entry end of the connector body and the pusher, and
an omnidirectionally compressed sealing interface at the pusher-engagement end of the gasket between the cantilevered portion of the gasket and an outer surface of a cable passing through the gasket cable passage of the gasket,
wherein the body-engagement end of the gasket is positioned against a stop wall of the connector body and the pusher-engagement end is positioned against the pusher when the gasket is received within the connector body, or the body-engagement end is positioned against the pusher and the pusher-engagement end is positioned the stop wall when the gasket is received within the connector body.

2. The fiber optic connector of claim 1 , wherein the body-engagement end of the gasket is structurally configured to expand radially outward to compress against a seal cavity of the connector body when forming the axially compressed sealing interface.

3. The fiber optic connector of claim 1 , wherein the gasket cable passage at the body-engagement end of the collapsing cantilevered gasket is larger than the gasket cable passage at the pusher-engagement end of the collapsing cantilevered gasket.

4. The fiber optic connector of claim 3 , wherein the body-engagement end of the gasket extends laterally outward relative to the pusher-engagement end of the gasket such that the collapsing cantilevered gasket has a greater cross-sectional profile along the body-engagement end of the gasket.

5. The fiber optic connector of claim 1 , wherein the collapsing cantilevered gasket is structurally configured such that the axially compressed sealing interface and the omnidirectionally compressed sealing interface lie in parallel planes but are characterized by non-parallel directions of compression.

6. The fiber optic connector of claim 5 , wherein the axially compressed sealing interface is characterized by a direction of compression that is parallel to the gasket cable passage and the omnidirectionally compressed sealing interface is characterized by a direction of compression that intersects the gasket cable passage.

7. The fiber optic connector of claim 1 , wherein the pusher engagement portion defines a seal cavity of the connector body that is sized to receive the collapsing cantilevered gasket and the pusher therein.

8. The fiber optic connector of claim 1 , wherein the connector body includes an engagement mechanism along the pusher engagement portion and the pusher includes a complimentary engagement mechanism.

9. The fiber optic connector of claim 8 , wherein the engagement mechanism of the connector body comprises a protrusion, and the complimentary engagement mechanism of the pusher comprises a latch sized and shaped to receive the protrusion therein, wherein the latch of the pusher is structurally configured to securely engage the protrusion of the connector body along the pusher engagement portion of the connector body when the pusher is axially translated toward the pusher engagement portion of the connector body.

10. A fiber optic connector, comprising:
a connector body comprising a ferrule retaining portion, a pusher engagement portion, and a body cable passage extending from a cable entry end of the connector body to the ferrule retaining portion of the connector body along a longitudinal axis extending through the pusher engagement portion of the connector body and the ferrule retaining portion of the connector body;
a ferrule assembly comprising an optical fiber bore, wherein the ferrule assembly is structurally configured to be retained by the ferrule retaining portion of the connector body with the optical fiber bore of the ferrule assembly in alignment with, or offset from and parallel to, the longitudinal axis of the connector body;
a pusher comprising a pusher cable passage, wherein the pusher is structurally configured to axially engage the pusher engagement portion of the connector body with the pusher cable passage in alignment with the body cable passage of the connector body; and
a collapsing cantilevered gasket comprising a gasket cable passage, an anchored portion formed about the gasket cable passage at a body-engagement end of the gasket, and a cantilevered portion formed about the gasket cable passage at a pusher-engagement end of the gasket, wherein the collapsing cantilevered gasket is structurally configured to form:
an axially compressed sealing interface at the body engagement end of the gasket about the body cable passage, between the cable entry end of the connector body and the pusher, and
an omnidirectionally compressed sealing interface at the pusher-engagement end of the gasket between the cantilevered portion of the gasket and an outer surface of a cable passing through the gasket cable passage of the gasket,
wherein the collapsing cantilevered gasket is structurally configured such that the cantilevered portion of the gasket at the pusher-engagement end of the gasket translates axially underneath the body-engagement end such that the body-engagement end compresses the pusher-engagement end radially inward toward the gasket cable passage to form the omnidirectionally sealing interface against the cable.

11. The fiber optic connector of claim 10 , wherein the collapsing cantilevered gasket is structurally configured such that the anchored portion of the gasket at the body-engagement end remains axially fixed along the gasket cable passage, and expands radially outward away from the gasket cable passage to form the axially compressed sealing interface against the connector body when the pusher-engagement end of the gasket is axially translated underneath the body-engagement end.

12. A fiber optic connector, comprising:
a connector body comprising a ferrule retaining portion, a pusher engagement portion, and a body cable passage extending from a cable entry end of the connector body to the ferrule retaining portion of the connector body along a longitudinal axis extending through the pusher engagement portion of the connector body and the ferrule retaining portion of the connector body;
a ferrule assembly comprising an optical fiber bore, wherein the ferrule assembly is structurally configured to be retained by the fe

Assignees

• Corning Res & Dev Corp

Inventors

• De Jong Michael
• Kluwe Wolf Peter
• Levandovskiy Andrey Nikolayevich
• Leyva Jr Daniel

Classifications

• G02B6/38875 Primary

  Protection from bending or twisting · CPC title

• G02B6/3893

  Push-pull type, e.g. snap-in, push-on · CPC title

• G02B6/3849

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

• G02B6/3825

  with an intermediate part, e.g. adapter, receptacle, linking two plugs · CPC title

• G02B6/3887 Primary

  Anchoring optical cables to connector housings, e.g. strain relief features · CPC title