| 摘要 |
A watertight joint in molded plastic material for jointing flexible pipes between them or with other devices, consisting or:
one male part (A) with corresponding male fitting piece (1), which is waterrightly insertable into
a female part (B) comprising:
a single joining plastic piece (2), shaped at the mating end with a female body (b1) and at the opposite end with an externally threaded portion including an inner extenally cone-shaped joining tube (3) suitable to support the end of the flexible pipe (C) to be connected, said joining tube being housed inside a pipe clamping toothed crown (4) protruding from the threaded portion, the teeth of which, being integrally molded with the female body, extended downwards in longitudinal direction and elastically flectable towards said joining tube (4);
a joint coupling bushing (b3) elastically axially movable to move inwards by conical internal shaping (8,8 min ), elastically movable joint clamping means (7);
an inside cone shaped pipe coupling ring nut (b2), screwable backwards over the pipe to be connected (C) and over the respective crown (4) to push the respective pipe clamping crown teeth against the pipe to realize the tightening condition;
an optionable inner comeback preventer valve (b4);
wherein:
said joint clamping means are integrally molded with the respective joining plastic piece (2) extending in frontward direction, realized as longitudinal elastic lengthwise tongue fastening means (7) shaped with joint clamping inner tooth (7 min );
said elastic movement of said joint coupling bushing (b3) is realized by helicoidal pushing springs (5) integrally molded iwth said joint plastic piece (2) stretching out from one corresponding abutting flange (6). |
