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Vehicle steering device

a steering device and vehicle technology, applied in mechanical devices, transportation and packaging, gearing, etc., can solve problems such as difficult inclusion in an automotive steering system

Inactive Publication Date: 2006-09-28
DELPHI TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These mechanisms possess characteristics that make inclusion in an automotive steering system difficult.
Rotation of a complete electric motor has large inertial forces and has additional assembly of a spiral cable that has additional issues including noise, friction, inertia, and durability.

Method used

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Examples

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Embodiment Construction

[0030] The exemplary embodiments relate with vehicle active front steering systems wherein the control steering system may include sensors such as, but not limited to, torque, position, yaw, lateral acceleration and vehicle speed sensors. Signals from these sensors may be sent to an electronic control unit (“ECU”). ECU may detect signals and provide input signals to output determinate control to control the position of the electric motor to achieve desired effects.

[0031]FIG. 1 shows an exemplary steering system 10 of a vehicle. The steering system 10 may be included in a motor vehicle having front wheel steering capability. Steering system 10 may be configured to provide for the active control of the steerability of the front steerable elements of the motor vehicle by mechanically adjusting an angle of the steerable wheels in response to sensed input parameters. Such active control compensates for the existence of a limit handling situation deduced from the sensed input parameters ...

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PUM

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Abstract

Disclosed herein is a vehicle steering device, comprising, a pancake harmonic drive with an external wave generator surrounding a flex spline that is in mesh with both a tooth matched spline and a dynamic spline, a rotatable input shaft in operable communication with the harmonic drive, a rotatable output shaft in operable communication with the harmonic drive, and a motor in operable communication with the wave generator, and the gear ratio of the input shaft to the output shaft is altered by rotation of the motor.

Description

CROSS REFERENCE TO RELATED APPLICATION [0001] This application is a continuation-in-part application of U.S. patent application Ser. No. 10 / 879,599, filed Jun. 29, 2004, the entire contents of which are incorporated herein by reference.BACKGROUND [0002] This invention relates generally to vehicle steering devices, and more particularly, this invention relates to vehicle steering devices having variable ratio steering. [0003] Motor vehicles, such as cars and trucks, require a steering system to control the direction of travel of the vehicle. The steering system controls the direction of travel of the vehicle through the control of one or more sets of road wheels. Such steering systems commonly transmit a driver's intent from a steering wheel to the road wheels via a mechanical steering linkage. Thus, movement of the steering wheel by the driver causes a corresponding movement of the road wheels. Hydraulic and / or electric motor assisting systems are commonly used in combination with s...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B62D3/00B62D5/00B62D11/06
CPCB62D5/008Y10T74/19005Y10T74/19F16H48/12
Inventor MENJAK, RATKOBOSWELL, KARENMAGNUS, BRIANAUGUSTINE, MICHAEL J.
Owner DELPHI TECH INC
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