Power steering apparatus for vehicle and method of producing the same
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United States of America Patent
Stats
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Feb 21, 2017
Grant Date -
Oct 1, 2015
app pub date -
Mar 31, 2015
filing date -
Mar 31, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A power steering apparatus for a vehicle includes a column shaft, a column pipe rotatably supporting the column shaft through a plurality of bearings, and a torque sensor for detecting torque generated on the column shaft by using magnetism. The column pipe is composed of a steel pipe. The torque sensor includes a magnetically variable portion and a magnetic change detector. The magnetically variable portion is disposed on the column shaft and has a magnetic permeability that varies with the torque generated on the column shaft. The magnetic change detector is configured to detect a change in the magnetism of the magnetically variable portion. The magnetic change detector is attached to the column pipe by being inserted in an axial direction through an opening at an axial end of the column pipe.
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Family
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