a connector including a locking mechanism to prevent a charge coupling from being broken when charging . a supply connector connected to a power source and a vehicle battery connector installed in an electric vehicle has a handle grip and a connector body attached to a distal end of the handle grip . the handle grip is provided in its interior with a lock mechanism which maintains and releases the coupling of the supply connector to the vehicle inlet and with a control which controls the lock mechanism . the control includes a detector for detecting a complete coupling of the supply connector to the vehicle connector . the control actuates the lock mechanism only when the detector detects the complete coupling and commencement of charging and releases the lock mechanism only when charging is stopped .