Electric power steering device
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United States of America Patent
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Oct 22, 2013
Grant Date -
Feb 23, 2012
app pub date -
Mar 15, 2011
filing date -
Aug 20, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electric power steering device including an input shaft to which a steering wheel is connected, an output shaft connected to a wheel side, a torsion bar provided between the input shaft and the output shaft, and a torque sensor that detects steering torque input from the steering wheel. An electric motor is driven in accordance with the torque detected by the torque sensor. A worm wheel is provided on the output shaft to transmit rotation of the electric motor to the output shaft in a housing, wherein a boss of the worm wheel is fitted into an outer circumference of the output shaft, and a bearing fitted into the outer circumference of the boss is supported on the housing.
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