Exhaust pipe coupling

F - Mech Eng,Light,Heat,Weapons – 01 – N

Patent

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Details

F01N 13/00 (2010.01) F01N 13/18 (2010.01) F16L 21/08 (2006.01) F16L 37/113 (2006.01)

Patent

CA 2630159

The invention relates to a coupling (20) for an exhaust system for a vehicle having an internal combustion engine. The coupling (20) includes a female pipe (22), a male pipe (24), and a clamping collar (26) to couple together the pipes (22, 24). The coupling (20) includes a post and slot connection (78) having a pair of posts (50) and a pair of slots (40) between the clamping collar (26) and the pipes (22, 24) for connecting the pipes (22, 24). The clamping collar (26) surrounds and slides along the female pipe (22) and includes an annular cam (62) presenting a pair of openings (64) for sliding the clamping collar (26) over the posts (50). The annular cam (62) presents an axially facing cam surface (66) having a slope increasing circumferentially from each of the openings (64) for sliding frictional engagement with the posts (50).

La présente invention se rapporte à un raccord (20) destiné au système d'échappement d'un véhicule doté d'un moteur à combustion interne. Le raccord (20) selon l'invention comprend un tuyau femelle (22), un tuyau mâle (24), et un collier de serrage (26) conçu pour coupler les tuyaux (22, 24) l'un à l'autre. Le raccord (20) selon l'invention comporte une liaison à saillies et à encoches (78), qui est constituée d'une paire de saillies (50) et d'une paire d'encoches (40) situées entre le collier de serrage (26) et les tuyaux (22, 24) et destinées à relier les tuyaux (22, 24). Le collier de serrage (26), qui entoure le tuyau femelle (22) et coulisse le long de ce dernier, possède une came annulaire (62) dotée d'une paire d'ouvertures (64) permettant de faire coulisser le collier de serrage (26) par-dessus les saillies (50). La came annulaire (62) possède une surface de came (66) à orientation axiale, dont l'inclinaison augmente de manière circonférentielle à partir de chacune des ouvertures (64), afin de venir en prise coulissante par frottement avec les saillies (50).

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