Abstract: A locking mechanism for connectors comprises a locking member having an engaging portion, a pressing portion and a fulcrum between the engaging portion and the pressing portion. The fulcrum of the locking member has a bent portion mounted around a fulcrum projection formed on a connector cover. The connector cover is formed with a wall extending inside of the projection. The pressing portion is formed with an elastic tongue piece for displacing outwardly the pressing portion and inwardly the engaging portion about the projection with the free end of the tongue piece in contact with the wall when the fulcrum is mounted on the projection, whereby the engaging portion is externally swung open about the projection when the pressing portion is pressed inwardly against the displacing force of the tongue piece. The pressing portion is formed with a stopper for stopping the pressing portion from further inwardly moving by making contact with the extension of the wall.

Abstract: A locking device for locking the coupling of a connector plug with a connector receptacle comprises a metal engaging piece provided at one of the connector plug and receptacle and a resin engaging portion provided at the other to be engaged by the metal engaging piece. A metal piece is mounted on the engaging part of the resin engaging portion.

Abstract: A lock pin for mounting a board-mount type connector on a board is formed of an elastic material and comprises an upper lateral arm, a pair of spaced long central legs respectively extending downwardly from the center of the upper lateral arm and a pair of spaced short outside legs respectively extending downwardly from the upper lateral arm along the outsides of the central legs. The central legs are adapted to be inserted into a lock pin mounting opening formed at one member of the connector from the upper surface side of the one member to project from the lower surface side of the one member over a considerable length and be inserted into a lock pin inserting opening of the board. The central legs are respectively formed at the lower ends thereof with side projections to be engaged with the periphery of the lock pin inserting opening.

Abstract: A cord clamping mechanism comprises a cord clamp and a clamp mounting base for mounting the cord clamp. The cord clamp has a ring-shaped portion for passing a cord to be clamped, and a pair of legs extending from both ends of the ring-shaped portion for clamping the cord passed through the ring-shaped portion when the legs are closed. The legs are formed with openings for passing a clamping screw for closing the clamp and mounting fixedly on the base. The base is formed with a threaded opening for receiving the screw. The cord clamping mechanism further comprises a guiding projection to be inserted into the opening at a position near the ring-shaped portion between the screw and the ring-shaped portion when the clamp is mounted on the base.

Abstract: In a connector in which a plug connector is held in a cover, locking members are mounted on the cover, and when the plug connector is engaged with a receptacle connector the locking members automatically engage locking pieces of the receptacle connector to lock the connectors in an engaged state, the plug connector is entirely housed in the cover for release levers of the locking members used for unlocking. The locking pieces of the receptacle connector are formed integrally with the body of the connector and each is fitted into a square reinforcing frame formed integrally with the flange of a metallic shell of the receptacle connector, by which the locking pieces are mechanically reinforced.