PROBLEM TO BE SOLVED: To provide a new quick-manufacture and easy-construction instant connecting means by partially inserting an assembly supporting disc into a seat formed in a support of the instant coupler and locking it there. ;SOLUTION: When an instant coupler 1 is connected to an external pipe 6 provided for feeding pressurizing fluid, the instant connector is sealed. When a union conveying fluid is introduced, thrust is transmitted in the arrow direction toward an auxiliary bush 23, so that the auxiliary bush 23 is moved to an aperture bush 8 against thrust of a spring 24. In this process, the instant coupler 1 is kept closed. When the auxiliary bush 23 is brought into contact with the aperture bush 8, the bushes 23, 8 are moved simultaneously against the thrust impressed by the springs 24, 26 because of external thrust. According to the movement of the aperture bush 8, fluid under pressure starts passing through a duct 7 and an outlet. In removal of the external thrust, the constant coupler 1 is automatically returned to a closing position by thrust of the springs 24, 26.;COPYRIGHT: (C)1996,JPO
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