Exhaust coupler

Abstract

This invention relates to a decoupler for the exhaust pipes of automobile. The preferred decoupler includes a conduit-type sleeve (10); a conduit-type cover member (20) generally covering the sleeve (10); a guiding member (30) extended from the end of the cover member (20), the guiding member serving to accommodate a bending articulation or radial displacement of the decoupler; an inner retainer pocket (40) having a rim (41) engaged in the outer surface of said sleeve (10), wherein said rim is extended circumferentially and forms a first pocket (42) with said guiding member (30); an outer retainer member (50) having an enlarged diameter area (40) and forming a second pocket (52) with said guiding member (30); buffering members (60) (61) located in the pockets (42) (52); and a bellows (70) fixably engaged between said inner retainer member (40) and said cover member (20), wherein said bellows (70) prevents leakage ofgas therein and absorbs the elastic and bending displacement, to allow said guiding member (30) to slide during bending articulation of buffering members (60) (61). Moreover, the present invention can minimize the effect of bending displacement on the engine because the invented decoupler absorbs vibration and accomodates bending displacement. In addition, the present invention can increase parts life and riding comfort.