A coupling device (10) for coupling a helical hose (20) of a cleaning device comprising: a hose recess (16) for a helical hose (20), an inner wall (12) and an outer wall (13), wherein the inner wall (12) is equipped with one or more projections (11) for fastening the helical hose (20) and wherein the outer wall (13) comprising at least one coupling element (15), which is connected with the outer wall (13) after assembling.
The present invention enables a hose coupling for coupling a helical hose where only two parts; hose and coupling device are connected together. The coupling device is easy to produce and it's also possible to create a secure and airtight connection between the hose and the coupling device. Additionally the production and mounting costs of such coupling device are reduced.