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US 2003/0197360 A1Published application
Cable-type steering device
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorYasuo Shimizu
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AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorYasuo Shimizu
Estimating the term…
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.
A cable-type steering device, comprising 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,
Dependencies are inferred from the claim text.
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Comprising flexible members, e.g. an endless flexible member: combined with means for creating non-linear characteristics, e.g. cams; Means for…
Steering columns: part of the steering column replaced by flexible means, e.g. cable or belt
Responsive only to driver input torque: characterised by means for sensing or determining torque
Gearing
Term end not estimated
1. Field of the Invention
The present invention relates to a cable-type steering device in which a steering wheel and a steering gear box are connected to each other by a flexible operating cable such as a Borden cable, and particularly to such a device with a variable steering gear ratio.
2. Discussion of Relevant Art
FIG. 1 is a perspective view of the entire arrangement of a cable-type steering device according to an embodiment of the present invention.
FIG. 2 is an enlarged sectional view taken along a line 2-2 in FIG. 1.
FIG. 3 is a sectional view taken along a line 3-3 in FIG. 2.
A mode for carrying out the present invention will now be described by way of embodiments of the present invention with reference to the accompanying drawings.
FIGS. 1 to 8 show a first embodiment of the present invention.
As shown in FIG. 1, a driving pulley casing 12 mounted in front of a steering wheel 11 of an automobile and a follower pulley casing 14 mounted above a steering gear box 13, are connected to each other by two operating cables 15 and 16 each comprising a Bowden cable. Tie rods 17L and 17R extending in a lateral direction of a vehicle body from opposite ends of the steering gear box 13 are connected to knuckles (not shown) which support left and right wheels WL and WR. A steering torque sensor for detecting a steering torque input to the steering wheel 11 is accommodated in the driving pulley casing 12. An actuator 20 mounted on a gear casing 19 integral with the follower pulley casing 14 is operated by a command from a control unit 18 to which a detected steering torque is input, thereby assisting the steering operation conducted by a driver.