METHOD FOR FASTENING A COMPONENT TO A PLASTIC PART OF A MOTOR VEHICLE USING THE TORSIONAL ULTRASONIC WELDING METHOD

摘要

The invention relates to an ultrasonic welding method for fastening a component (1) to a functional part (2), wherein the component (1) is fastened in a holder (3), and the holder (3) is connected to the functional part (2). In order for the holders (3) not to have to be designed specifically for the functional part (2) to which the holders should be fastened and for extensive adhesive or welding areas not to be required on the holder, it is proposed that the torsional welding method known per se be used as the method, using a sonotrode (4) to transfer the vibrations generating the welding process to the holder (3) to be welded, wherein the holder (3) is provided with first coupling elements (5) for coupling the vibrations of the sonotrode (4) to the holder (3) and with second coupling elements (6) for coupling the vibrations induced by the sonotrode (4) in the first coupling element (5) to the functional part (2), and thereby in the welding process the vibrations of the sonotrode (4) are transferred to the coupling elements (5, 6) and by means of the coupling elements (5, 6) to the functional part (2) and thus weld the holder (3) to the functional part (2).