Object driving device for opening and closing e.g. door, has hubs driving plates in same movement to make movements of plates to be out of phase with each other such that plates engage/disengage tool to obtain movement of tool based on hubs

摘要

The device has three identical toothed plates (4, 5, 6) including rectilinear edges (50, 60) provided with regular succession of steps (51, 61), where the plates are assembled on identical hubs (3) fixed on shafts (11) in an identical manner. The hubs drive the plates in a same circular translational movement to make movements of the plates to be 120 degrees out of phase with each other such that the plates engage/disengage a finger tool (20) through the edges to obtain relative movement of the tool with respect to the hubs, where the hubs are in the form of eccentric discs (30, 31, 32).