Patent ID: 8397588
Filing Date: 2013-03-19
Classification: B62D,G01B

Abstract:
1. An electronic power steering apparatus, comprising: a torque angle sensor; an electronic control device configured to compute a signal inputted from the torque angle sensor and transmit an output signal to a motor; the motor configured to receive the signal from the electronic control device and generate steering auxiliary power; a worm gear engaged with the motor; and a worm wheel gear teeth-engaged with the worm gear and configured to transfer the steering auxiliary power generated from the motor to a steering shaft, wherein torque angle sensor, comprises: a sensor housing; an upper case, through a central part of which an input shaft and an output shaft extend and are assembled with each other, an upper side of the upper case being engaged with the sensor housing, the upper case comprising a fastening means for fastening the upper case to the sensor housing; a rotor disposed inside the upper case, the rotor being fitted around an outer surface of the output shaft extending through the rotor; a middle case engaged with a lower side of the upper case; and a lower case, an upper side of which is engaged with a lower side of the middle case, and a lower side of which is engaged with a spacer cover, wherein the lower case comprises protrusions protruding from a lower surface of the lower case.