Coupling system for a suction device with electrical plug-in units aligned with each other and guiding contours

The patent combines multiple functions into the coupling system: mechanical connection (nozzle and receiving area), electrical connection (plug-in units with contacts), and guiding/alignment (guide contours). This integration of mechanical, electrical, and guiding functions into a single coupling system achieves stable and reliable connections while avoiding the need for separate coupling mechanisms, thereby resolving the contradiction between connection reliability and device complexity.

The coupling system is designed as a universal interface that simultaneously provides mechanical coupling, electrical power transmission, data transmission, and alignment guidance. The first and second coupling elements each integrate multiple functional components (nozzle, receiving area, plug-in units, guide contours) that work together to achieve multi-functional connection, improving reliability without proportionally increasing complexity.

The guide contours are positioned to engage first during the connection process, performing the preliminary action of guiding and aligning the coupling elements before the nozzle fully protrudes and makes contact. This preliminary alignment ensures that subsequent connection actions occur with proper positioning, reducing the risk of damage while maintaining ease of operation.

The guide contours act as an intermediary mechanism between the operator and the electrical contacts. They provide the initial guidance and alignment function, mediating the connection process so that the electrical contacts are engaged only after proper alignment is achieved, thereby reducing damage risk while maintaining operational convenience.