Superimposed steering system i.e. servo or power steering system, for motor vehicle i.e. passenger car, has inner shafts, where ratio of inner diameter of one shaft to larger outer diameter of another shaft is approximately one to two

摘要

The system has an input shaft (3) represented as a steering shaft (7), which is connected with a steering handle (8), where the input shaft is connected with a servo motor (9). A housing (24) of a shaft drive (4) and/or a housing (25) of the servomotor is arranged in a vehicle in a fixed manner. A ratio of an inner diameter of the input shaft to a larger outer diameter of an input shaft (2) is approximately 1 to 2 over a length (Ls) of the servomotor and /or a length (Lw) of the shaft drive.