Ball screw drive for steering system of motor car, has ball series running next to each other in axial direction of ball screw in ball screw thread trajectory of screw and/or ball threaded nut, and balls comprising pads at screw and nut

摘要

The drive (20) has a ball screw (22) and a ball threaded nut (21) including a ball screw thread trajectories (23, 24) that are guided from one behind the other and balls (25) form ball series. The ball series run next to each other in axial direction of the ball screw in one of the ball screw thread trajectories of the ball screw and/or ball threaded nut. The balls comprise point-like pads at the ball screw and ball threaded nut, and screw thread edges (26, 27) of the ball screw and ball threaded nut are movably arranged to each other. An independent claim is also included for a steering system for a motor car.