Conduit connection device with split clamp ring

摘要

The present invention relates to a connection device (1) for the rapid and releaseable connection of plastic pipelines. This is composed of a housing part (2) with a plug-in receiving means (4) for one end of the pipeline, and of a radially elastic clamping ring (6) which is arranged in the housing part (2), exhibits a longitudinal slit (8) passing in the axial direction and has at least one inner, circumferential cutting edge (10) and an outer cone (12) which interacts with an inner cone (14) of the housing part in order to arrest the pipeline, the clamping ring (6) being subdivided into two resilient arms by means of a ring-profile weakening (16) formed in the region of the ring located diametrically opposite the longitudinal slit (8). In order to form the ring-profile weakening (16), the clamping ring (6) has, in this circumferential region and at least in a sub-region of its axial length, on the inside and outside, in each case one delimiting contour (18, 20) which runs in the form of an arc of a circle, as seen in the circumferential direction. The centre point (M1) of the radius of curvature (r1) of the outer delimiting contour (20) is offset in the direction of the longitudinal slit (8) relative to the centre point (M2) of the radius of curvature (r2) of the inner delimiting contour (18).