PIPE JOINT DEVICE

PURPOSE: A pipe joint device is provided to prevent the separation of a pipe fixing assembly easily assemblable inside a joint body according to the configuration of a push switch member, thereby improving assemblability. CONSTITUTION: A pipe joint device includes a joint body(100h) and a pipe fixing assembly. The pipe fixing assembly includes a supporting ring(110), a packing ring(130), an expandable bite ring section(170), a push switch member(190), and a spring ring(150). The supporting ring is fixed to the terminal portion of the dome expansion part. The packing ring is fixed to the supporting ring(110) at the middle portion of the dome expansion part. The bite ring section on the front end portion of the dome expansion part grips the outer diameter of the pipe(P) to be disassembled. The push switch member is fixed to the tip portion of the dome expansion part, and is movable back and forth through an inner flange type opening. The push switch member prevents the separation of the bite ring section, and separates the inserted pipe. The spring ring between the packing ring(130) and the bite ring section provides an elastic force for elastically moving the bite ring section between the front end and the middle portion of the dome expansion part. The dome expansion part includes an upwardly inclined portion, a horizontal expansion portion, and a downwardly inclined portion. The upwardly inclined portion is expanded and extended from the opening. The horizontal expansion portion is actually horizontal, and is extended from the upwardly inclined portion. The downwardly inclined portion on the terminal portion of the dome expansion part is contractibly extended from the horizontal expansion portion.