US 12,111,220 B2
Sensor assembly for sensing a steering torque and an absolute angular position, and sensor device having said sensor assembly
Matthias Hintze, Dettendorf (DE); and Bernd Wittmann, Pommersfelden (DE)
Assigned to Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
Appl. No. 17/625,843
Filed by Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
PCT Filed Jun. 3, 2020, PCT No. PCT/DE2020/100460
§ 371(c)(1), (2) Date Jan. 10, 2022,
PCT Pub. No. WO2021/004567, PCT Pub. Date Jan. 14, 2021.
Claims priority of application No. 102019004741.9 (DE), filed on Jul. 10, 2019; and application No. 102019124973.2 (DE), filed on Sep. 17, 2019.
Prior Publication US 2022/0260438 A1, Aug. 18, 2022
Int. Cl. G01L 3/10 (2006.01); B62D 6/10 (2006.01); B62D 15/02 (2006.01); G01D 5/20 (2006.01); G01L 5/22 (2006.01)
CPC G01L 3/102 (2013.01) [B62D 6/10 (2013.01); B62D 15/0215 (2013.01); G01D 5/2053 (2013.01); G01L 5/221 (2013.01); G01D 2205/26 (2021.05)] 18 Claims
OG exemplary drawing
 
1. A sensor arrangement for sensing a steering torque and an absolute angular position of a steering element extending along an axis, the sensor arrangement comprising:
a circuit board with a base surface arranged perpendicularly to the axis and at least one wing surface extending at an angle to the base surface;
a first sensor element for determining the steering torque, the first sensor element including at least one first primary sensor formed as a magnetically encoded section on the steering element and a secondary sensor facing the first primary sensor configured to convert a change in a magnetic field generated by the primary sensor into an electrical signal, the secondary sensor being arranged on the radially inner side of the angled wing surface of the circuit board, facing the primary sensor; and
a second sensor element for determining the absolute angular position, the second sensor element comprising a main gear arranged on the steering element that meshes with at least two gears, one of the two gears has one more tooth than an other of the two gears, and at least one target is formed on each of the two gears, which is located facing an angle sensor arranged on the base surface of the circuit board.