US 12,134,434 B2
Torque sensor, steering angle sensor and corresponding integrated sensor and monitoring system
Mirko Scheer, Jiangsu (CN); Gaofeng Liang, Jiangsu (CN); Joe Li, Jiangsu (CN); and Guotao Chen, Jiangsu (CN)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/619,830
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Jun. 29, 2020, PCT No. PCT/EP2020/068180
§ 371(c)(1), (2) Date Dec. 16, 2021,
PCT Pub. No. WO2020/260677, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 201910566822.9 (CN), filed on Jun. 27, 2019.
Prior Publication US 2022/0306192 A1, Sep. 29, 2022
Int. Cl. G01L 3/10 (2006.01); B62D 6/10 (2006.01); B62D 15/02 (2006.01)
CPC B62D 6/10 (2013.01) [B62D 15/0225 (2013.01); G01L 3/105 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A torque sensor for detecting a steering torque of a steering column, wherein the steering column comprises an input shaft, an output shaft and a torsion bar connected between the input shaft and the output shaft, the torque sensor comprising:
an input rotation component, configured to rotate with the input shaft and provided with a first conducting part;
an output rotation component, configured to rotate with the output shaft and provided with a second conducting part; and
an electromagnetic carrier, positioned in a positionally fixed manner at a location between the input rotation component and the output rotation component, and provided with a magnetic field generating component and a magnetic field detection component,
wherein
the magnetic field generating component is configured to generate a magnetic field penetrating the first conducting part and the second conducting part,
the magnetic field detection component is configured to detect a change in the magnetic field caused by a change in the positions of the first conducting part and second conducting part in the magnetic field when the steering column is under torsional stress, and
the sensor is configured to determine steering torque using the detected change in the magnetic field.