Patent ID: 8943879
Filing Date: 2015-02-03
Classification: B62D,G01L

Abstract:
1. A steering torque and steering angle measurement apparatus, comprising: a stator configured to be fixed to an output shaft; a ring magnet disposed at the inner part of the stator and configured to be fixed to an input shaft; a torque sensor measuring a steering torque by sensing a magnetic field produced between the stator and the ring magnet; and a steering angle signal generation part measuring the steering angle, wherein the ring magnet is formed of a ring shape, and disposed such that its polarity alters with an equal interval in a circumferential direction, wherein the steering angle signal generation part includes: a steering angle magnet fixed to a printed circuit board (PCB) to produce a magnetic field; a hall switch outputting an ON signal at ordinary times by being disposed to face the steering angle magnet and sensing the magnetic field of the steering angle magnet; and a rotating member formed with a rotation tooth, and configured to be fixed at the output shaft to simultaneously rotate with the output shaft, wherein the rotation tooth faces the steering angle magnet when the rotation tooth is placed in a nearest position to the steering angle magnet, wherein the rotation tooth is one of an outward projection from the rotating member in a radial direction of the rotating member or an inward indentation of the rotating member in the radial direction of the rotating member, wherein the PCB has a curved shape and is disposed around the rotating member such that the PCB curves around a portion of a circumference of the rotating member, and wherein the torque sensor is fixed to the PCB.