Cable-type steering device with variable steering gear ratio

Details Cable-type steering device with variable steering gear ratio Cable-type steering device with variable steering gear ratio

2005-04-12

2005-04-12

Hurley, Kevin (Department: 3611)

Motor vehicles

Steering gear

With electric power assist

C280S773000, C180S421000

Reexamination Certificate

active

06877583

ABSTRACT:
A cable-type steering device in which the steering gear ratio can be varied in accordance with the position of a steering wheel comprises operating cables wound around an outer peripheral surface of a driving pulley rotatably connected to a steering wheel and an outer peripheral surface of a follower pulley rotatably connected to a steering gear box for steering wheels so that a steering torque input to the steering wheel is transmitted through the operating cables to the steering gear box. The driving pulley is of a barrel-shape with the diameter being larger at an axially central portion and smaller at axially opposite ends. The follower pulley is of a bobbin-shape or sand-clock-shape with the diameter being smaller at an axially central portion and larger at axially opposite ends. Thus, the steering gear ratio (a ratio of the steering angle of the steering wheel/a transmitted steering angle for the wheels) can be varied in accordance with the position of the steering wheel.

REFERENCES:
patent: 1692666 (1928-11-01), Koons
patent: 3088449 (1963-05-01), Hockaday et al.
patent: 4850606 (1989-07-01), Weisgerber et al.
patent: 5885080 (1999-03-01), Letovsky
patent: 6006853 (1999-12-01), Shimizu et al.
patent: 6125962 (2000-10-01), Shimizu et al.
patent: 08-002431 (1996-01-01), None
patent: 09109912 (1997-04-01), None
patent: 10-059197 (1998-03-01), None
patent: 2000-025623 (2000-01-01), None

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