US Patent 8215987 Fluidproof connector

A retainer (40), a rubber plug (60) and a rubber plug pressing member (70) are mounted in a housing (10). The retainer (40) is movable between a partial locking position and a full locking position, and the rubber plug pressing member (70) is movable between an initial position and a pushed-in position. The rubber plug pressing member (70) is formed with arm portions (74) projecting therefrom. The retainer (40) is formed with unlock linking portions (46) for linking a movement of this retainer (40) from the full locking position to the partial locking position and a movement of the rubber plug pressing member (70) from the pushed-in position to the initial position with each other by coming into sliding contact with the arm portions (74).