Patent ID: 6318764
Filing Date: 2001-11-20
Classification: F16L

Abstract:
Detachable rapid-action coupling device for receiving a tubular plug-in element (3) with a circumferential retaining rib (4), consisting of a receptacle housing (1) with a tubular connecting piece (7) that is connected to a fluid line and a cylindrical receptacle space (6) for inserting the plug-in element (3), and of a separate retaining element (2) of a hard-elastic plastic material with inwardly directed elastic retaining edges (17) that have the form of an arc of a circle and engage behind the retaining rib (4) after insertion of the plug-in element (3), with the retaining element (2) being inserted into the receptacle space (6) through an opening (11) in the cylindrical housing wall (5) of the receptacle housing (1) and fixed axially to the housing wall (5) by means of the retaining edges (17), with the retaining element being able to be pressed inwardly from the outside within the opening region (11) of the housing wall (5) in order to disengage the plug-in element (3), and with the receptacle space (6) consisting of three stepped sections, the first, inner section (6') of which has an inside diameter (d1) that corresponds to the outside diameter (D1) of the plug-in element (3), the second, central section (6"") of which is arranged outwardly adjacent to the first, inner section and serves for accommodating at least one annular seal (9) for the plug-in element (3), and the third, front section (6'"") of which has an inside diameter (d3) within the inlet region which corresponds to the outside diameter (D3) of the retaining rib (4), characterized by the fact that the housing (1) is realized in the form of a two-part component, with a head part (8, 30) that contains the front section (6'"") being able to be axially plugged together with a base body (16, 31) and thereby connected thereto, with the head part containing a centering ring (19) on the plug-in side, the end surface (20) of which simultaneously serves as an end part for the central section (6""), and with the connection being produced by means of locking elements (23/24) and (27/28), respectively, such that the head part (8, 30) is rotatably held on the outer wall (22) of the base body (16, 31).