| 摘要 |
The invention concerns a flangeless and seamless sleeve for smooth tubes comprising a self-locking device associated with each tube and a flexible bellows whereof each end is locked on the end of a tube and in the self-locking device, the self-locking device consisting of a shell with peripheral opening having one edge capping the edge of the bellows and pressing it against the tube as well as a peripheral housing open towards the tube and receiving an anchoring member terminated by claws pressed against the tube to lock the assembled and pressed shell therein, said shell consisting of at least two peripheral parts. Each shell (11) of the locking device (1) comprises ribs (14) in its entry region designed to overlap the end of the tube and the bellows (2) comprises, at each of its two ends, an inner surface provided with ribs and an outer surface provided with grooves, the corrugations of the ribs and of the grooves being oppositely offset, the recess of one corresponding by a diametrical plane to the recess of the other and reciprocally. |
