CONNECTOR AND MATING CONNECTOR AND COMBINATION THEREOF

摘要

A plug connector comprises a fitting portion for engagement with a receptacle connector. An outer peripheral surface of the fitting portion includes an engagement depression. A coupling member surrounds the outer peripheral surface of the fitting portion with a predetermined gap therebetween. The coupling member is forwardly biased in an axial direction of the plug connector by a coil spring. The receptacle connector further comprises a spring portion with a free end having an engagement projection that projec ts radially inwardly. The fitting portion has a thickness substantially equal t o the predetermined gap provided for the plug connector. The engagement projection is receivable in the engagement depression to lock the fitting portion and the coupling member.