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US 10,768,028 B2Granted
Sensor unit for determining a rotor position of an electric motor and electric motor, preferably for a clutch actuator of a clutch actuation system of a motor vehicle
AssigneeSchaeffler Technologies AG & Co. KG
InventorsPeter Biegert, Dominik Holl
Life of this patent
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Abstract
The invention relates to a sensor unit for determining a rotor position of an electric motor, including at least one magnetic field sensor attached to a carrier element. In the case of a sensor unit, in which the sensor system can be easily exchanged, the carrier element is positioned in a sensor system housing which is open on one side and in which a sensing area of the at least one magnetic field sensor is directed in the direction of the open side of the sensor system housing.
Claims10
An electric motor assembly comprising:
- a sensor unit for determining a rotor position of an electric motor, the sensor unit including:
- at least one magnetic field sensor, which is fastened on a carrier element,
- the carrier element is positioned in a sensor housing, the sensor housing having a cylindrical profile, the sensor housing being open at one side and the at least one magnetic field sensor is positioned inside of the sensor housing and in a direction of the one side of the sensor housing that is open,
- the sensor housing has a step in an axial direction thereof by which the sensor housing is divided into two portions with two-cross sections having different outer diameters and the at least one magnetic field sensor is partially arranged in both of the two portions, wherein a circumferential surface of the sensor housing includes a protruding locking mechanism,
- a rotor, which is directly connected to a magnet, and
- a stator, at which the at least one magnetic field sensor is arranged for detecting a magnetic field extending from the magnet outside an axis of rotation of the rotor.
3 more elements
Dependencies are inferred from the claim text.