COUPLING DEVICE

摘要

PURPOSE: A coupling device is provided to reduce the leak when coupling elastic connection pipes to each other by completely coupling the connection pipes using the coupling device. CONSTITUTION: A coupling device includes the first pipe having a screw line at one side thereof and at least two elastic blades(11) provided with a holder. A second pipe is provided with blade grooves(21) corresponding to the elastic blades(11). A coupling(30) is provided to couple the blade holder of the first pipe to the blade grooves(21) of the second pipe. The coupling(30) has an inner diameter larger than an outer diameter of the first and second pipes. The coupling(30) is formed at an inner portion thereof with a screw line which is corresponding to the screw lines formed in the blades(11).