Rack and pinion auxiliary steering mechanism, especially for motor vehicles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 20, 1991
Grant Date -
N/A
app pub date -
Nov 27, 1989
filing date -
Jul 3, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an electrically-assisted rack and pinion auxilliary steering mechanism, an electric motor is controlled in accordance with a signal from a torque-measuring device. To prevent faulty control messages, a safety switching device is provided that contains two switches capable of being activated by a lever. A ball nut that is connected with a threaded spindle by a ball diversion channel is connected with the steering rack of the rack and pinion steering gear. The threaded spindle is connected via a spring bellows, with an output part of a coupling that can be coupled with or uncoupled from the electric motor. The threaded spindle is connected, axially movable and rotatable, opposite the fixed housing by two elastic intermediate rings and two axial bearings. If the axial movement does not coincide with the torque at the steering wheel in case of a malfunction, the coupling is disengaged by one of the two switches.
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Family
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