Method for the installation of an adjusting unit for a motor vehicle and adjusting unit produced using said method

A method for assembling an adjusting unit for motor vehicles, wherein the adjusting unit comprises a housing having at least two housing parts and further functional components arranged in or on the housing and to be built into a motor vehicle, the method comprising:

• providing at least one irradiation source by which a laser irradiation usable for laser welding is producible;
• providing one of the at least two housing parts of the adjusting unit, wherein one of the housing parts at least partially comprises a material that absorbs the laser irradiation;
• providing the other housing part of the at least two housing parts, wherein the other housing part at least partially comprises a material that is permeable for the laser irradiation;
• arranging the further functional components of the adjusting unit on at least one of the housing parts such that the further functional components are arranged in or on the housing formed by the housing parts;
• connecting the housing parts to each other by assembling the housing parts and positioning the assembled housing parts and the at least one irradiation source with respect to each other in such a manner that emitted laser irradiation, through a region of the housing permeable for the laser irradiation, strikes another region of the housing absorbing the laser irradiation and thereby connects to each other the two regions abutting each other;
• positioning the housing and the at least one irradiation source with respect to each other in such a manner that the emitted laser irradiation, through a region of the housing permeable for the laser irradiation, penetrates into the inside of the housing and connects with the housing at least one of the further functional components arranged in the housing;
• and
• further connecting the housing parts to each other and fixing at least one of the further functional components on the housing via a single, continuous welding seam.