Variable ratio steering system

Details Variable ratio steering system Variable ratio steering system

1995-01-27

1996-02-06

Hurley, Kevin T.

Motor vehicles

Compensating devices

74498, 74571M, B62D 312

Patent

active

054890047

ABSTRACT:
In a variable ratio steering system, the input shaft is rotatably supported by a support member which is in turn rotatably supported by a casing, and the axial lines of these two parts extend in parallel with each other, and are offset from each other. While the point of action between the input shaft and the output shaft is fixed relative to the output shaft, the distance between the point of action and the axial center line of the input shaft changes in dependence on both the angular position of the support member and the amplitude of the input angle. Thus, by appropriately determining the relative relationships between the axial lines of the input and output shafts and a rotatable range of the support member, it is possible to achieve a desired non-linear relationship between the rotational angles of the input shaft and the output shaft. It is therefore possible to improve the handling of the vehicle, for instance in parking the vehicle in a small space, and steer the vehicle with a least amount of effort in a low speed range, and to increase the stability of the vehicle in a high speed range. Furthermore, this can be achieved with a highly simple and play-free structure.

REFERENCES:
patent: 4299302 (1981-11-01), Nishikawa et al.
patent: 5174407 (1992-12-01), Shimizu et al.
patent: 5203421 (1993-04-01), Ueno et al.
patent: 5284219 (1994-02-01), Shimizu et al.
patent: 5386879 (1995-02-01), Shimizu

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