Connecting system for parts of guttering unit uses circumferential outwardly aligned channel of one part to engage over local radially outwardly aligned deformable bulge of part above to fit together in sequence

摘要

The connecting system uses tubular parts of complementary profiled cross-sections of different internal widths so that each upper part, outlet pipe or pipe bend part has a local radially outwardly aligned partially elastic deformable bulge (9) and each lower part which engages over same has a partially circumferential outwardly aligned channel. The outlet pipe (5) has a smaller diameter than the facing end of the pipe bend (6) which during assembly is pushed onto same. the bulges are preferably partially spherical.