Optical connector

• US 6,796,721 B2
• Filed: 11/15/2002
• Issued: 09/28/2004
• Est. Priority Date: 11/15/2001
• Status: Expired due to Fees

• Current Assignee: Furukawa Electric Company Limited
• Original Assignee: Furukawa Electric Company Limited
• Inventors: Miyazaki, Hideki, Matsumoto, Shinichi, Shiino, Masato
• Primary Examiner(s): Fureman, Jared J.
• Assistant Examiner(s): TRAIL, ALLYSON NEEL
• Application Number:
  US10/295,462
• Publication Number:
  US 20030095754A1
• Time in Patent Office: 683 Days
• Field of Search: 385/86, 385/58, 385/56, 385/60, 385/78
• US Class Current: 385/86
• CPC Class Codes: G02B 6/3885 Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type optical ribbon cable G02B6/4403, G02B6/448
• CPC Class Codes: G02B 6/38875 Protection from bending or twisting

Abstract

An optical connector has a housing in which a ferrule and a stopper are arranged on the front side and the rear side of the housing, respectively. An optical fiber ribbon extends from the ferrule through the stopper engaged with the housing and comes out from the rear end of the housing. A protection boot extends from the rear end of the housing over a predetermined length. The protection boot surrounds the optical fiber ribbon. The protection boot has a front end mounted on the stopper inside the housing.

Claims

1. An optical connector attached to an end of an optical fiber cable, the optical fiber cable including an optical fiber, the optical connector comprising:

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

a ferrule arranged in said housing on a front open end side of said housing, the optical fiber cable being connected with said ferrule at one end thereof by means of the optical fiber and extending out of said housing through the rear open end;

a holding assembly for holding said ferrule in said housing, said holding assembly including a stopper arranged in said housing on a rear open end side of said housing; and

a protection boot adapted to surround the optical fiber cable over a predetermined length from the rear open end of said housing, said protection boot having a front end engaged with said stopper inside said housing, and having flexibility which restricts bending of the optical fiber cable to an allowable limit;

wherein said stopper includes a plurality of integrally-formed protection arms which extend through the rear open end of said housing, said protection arms being arranged outside said protection boot in a manner that allows the optical fiber cable and said protection boot to bend.

2. The optical connector according to claim 1, wherein the optical fiber cable is in the form of a ribbon including a plurality of optical fibers, and said protection arms are adapted to extend along both side-edges of the optical fiber ribbon.

3. An optical connector attached to an end of an optical fiber cable, the optical fiber cable including an optical fiber, the optical connector comprising:

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

a ferrule arranged in said housing on a front open end side of said housing, the optical fiber cable being connected with said ferrule at one end thereof by means of the optical fiber and extending out of said housing through the rear open end;

a holding assembly for holding said ferrule in said housing, said holding assembly including a stopper arranged in said housing on a rear open end side of said housing; and

a protection boot adapted to surround the optical fiber cable over a predetermined length from the rear open end of said housing, said protection boot having a front end engaged with said stopper inside said housing and having flexibility which restricts bending of the optical fiber cable to an allowable limit;

wherein said stopper includes a boss fitted into a front end of said protection boot, and a stopping surface adapted to abut on the front end face of said protection boot.

4. The optical connector according to claim 3, wherein said stopper further includes an annular groove formed in an outer circumferential surface of said boss, and said protection boot has an inner flange formed at the front end of said protection boot and fitted into said annular groove of said boss.

5. The optical connector according to claim 3, wherein said stopper further includes a plurality of integrally-formed protection arms which extend through the rear open end of said housing, said protection arms being arranged outside said protection boot in a manner that allows the optical fiber cable and said protection boot to bend.

6. The optical connector according to claim 5, wherein each of said protection arms has a proximal part adapted to compress the front end of said protection boot, in cooperation with said boss.

7. The optical connector according to claim 5, wherein said stopper further includes a support member adapted to connect said protection arms, said support member having an abutting surface opposite to said stopping surface, and said protection boot has a convex portion formed on an outer circumferential surface of the front end of said protection boot, said convex portion being held between said stopping surface of said stopper and said abutting surface.

8. The optical connector according to claim 7, wherein said support member is arranged to close said rear open end from the outside of said housing and has a through-hole allowing the front end of said protection boot to pass through.