Gear ratio variable type steering device
AssigneeMando Corporation
InventorByung-Yun Choi
Life of this patent
Estimating the term…
Abstract
The present invention relates to a gear ratio variable type steering device which includes a variable gear mechanism between a steering wheel and a gear box for varying a gear ratio based on the speed of a vehicle. The variable gear mechanism includes an input shaft for receiving a rotational force of the steering wheel, an output shaft for transferring a rotational force to the gear box, a variable pulley installed in the outer portions of the input shaft and the output shaft and moved in the axial direction, a belt for connecting the variable pulley, and a motor for varying a gear ratio by moving the variable pulley in the axial direction.
Claims13
In a steering device which has a universal joint installed based on a column for thereby receiving a rotational force from a steering wheel, and a gear box having a rack bar moved in an axial direction based on a rotational force transferred from the universal joint, a gear ratio variable steering device, comprising:
- a variable gear mechanism including:
- an input shaft for receiving a rotational force of the steering wheel;
- an output shaft for transferring a rotational force to the gear box;
- pulleys installed in the outer portions of the input shaft and the output shaft, at least one of said pulleys being a variable pulley move in axial direction;
- a belt for connecting the variable pulleys, and
- a motor for varying a gear ratio by moving a portion of the variable pulley in the axial direction.
Dependencies are inferred from the claim text.