| 摘要 |
A torque sensor and an electronic power steering device including the same are provided to get a minute torque measurement value and reduce the production error of the torque sensor by making a magnet at a torsion bar into one body. A torque sensor comprises a torsion bar(305), a magnet(320), a position rotor, a magnetism quantity detection unit and an electronic control unit. The torsion bar is connected to an input shaft and an output shaft in order to deliver the cornering force. The torsion bar is fixed with a pin(310) after being pressed in the input shaft and the output shaft. The magnet is formed integrally with the torsion bar. The position rotor has an output shaft joint on the center. The position rotor is combined with the output shaft at the area where the magnet of the torsion bar is formed. The magnetism quantity detection unit comprises a concentrator connected at the one side of circumferential surface of the position rotor. The electronic control unit computes the output of the magnetism quantity detection unit. A housing surrounds the position rotor and magnetism quantity detection unit.
|
