Device for connecting tube to endpiece

PCT No. PCT/FR96/01641 Sec. 371 Date Apr. 16, 1998 Sec. 102(e) Date Apr. 16, 1998 PCT Filed Oct. 21, 1996 PCT Pub. No. WO97/15777 PCT Pub. Date May 1, 1997A junction device for joining a tube (3) to the body of a part (2) including a cylindrical endpiece (1) belonging to the part and defining a end face (6), and a coupling sleeve (11) having a first section (12) including releasable fastener means (13) for co-operating with corresponding means (5) on the coupling endpiece (1) and having a second section (14) axially adjacent to the first section (12) and including means (15) for opposing extraction of an end of the tube (3) placed in the sleeve (11) and in abutment against the end face (6) of the endpiece (1), in which the sleeve (11) is internally fitted with a guide ring (19) for guiding the end of the tube (3), the inside diameter (D) of the ring being substantially equal to the outside diameter of the tube (3), the ring possessing a first portion (20) mounted to slide in the second section (14) of the sleeve (11) and a second portion (21) projecting axially into the first section (12) of the sleeve (11), and the endpiece (1) being provided with a groove (7) formed in its end face (6) to receive and center the free end of the projecting second portion (31) of the ring (19) when the fastener means (5, 13) are in engagement.