Optical connector plug, optical connector adapter and optical connector

An optical connector jig comprising:

• a ferrule having a cylindrical member for supporting an optical fiber and a flange member disposed at a rear end portion of the cylindrical member, the flange member having an engaging portion at a rear end portion thereof;
• an optical connector plug comprised of a biasing member mounted on a rear end portion of the flange member of the ferrule and a plug housing for holding the ferrule in a state of being biased by the biasing member toward a front end side of the plug housing in the direction of a longitudinal axis thereof by engagement between the biasing member and the engaging portion of the flange member, the plug housing having a slit extending through an outer periphery of the plug housing along the longitudinal axis thereof to permit insertion therethrough of an optical fiber core of the optical fiber into the plug housing in a direction generally transverse to the longitudinal axis during assembly of the optical connector plug;
• and
• an optical connector adapter comprised of a tubular sleeve having at least one open end for receiving a front end of the cylindrical member of the ferrule, and an adapter housing supporting therein the sleeve, the adapter housing having connecting portions for removable integral connection with connecting portions of the plug housing and an engaging portion projecting from an outer peripheral surface portion of the adapter housing for detachable engagement directly to a mounting board or for detachable engagement to a mounting member detachably engageable with the mounting board to detachably mount the adapter housing to the mounting board.