Pipe joint structure for fluid device.

摘要

When used for connecting a fluid pipe, the pipe joint for fluid device of the present invention can provide a strong force for preventing the fluid pipe from coming out from the pipe joint and can assure excellent sealing properties regardless of variations of the fluid temperature. The present pipe joint is arranged such that no fluid stay portion is formed. A cylindrical joint body (2) is provided at the inner peripheral surface thereof with a receiving port (9) into which a one-end pushing portion of a fluid pipe (8) is inserted, and at the outer peripheral surface thereof with a male screw portion (10). This joint body (2) is formed integrally with the main body (1) of the fluid device. Formed at the receiving port (9) is a sealing portion (11) as inclined with respect to the axis thereof. A sealing ring (13) having a sealing portion (14) which comes in contact with this sealing portion (11), is pressingly inserted into one end of the fluid pipe. By the threaded movement of a pushing ring (16) as threadedly connected to a male screw portion (10) on the outer periphery of the joint body, a sealing force is given to both sealing portions. <IMAGE>