Sensor device for detecting a rotational position of a rotor of an electric machine, drive device, pressure generator for a brake system

A drive device, comprising:

• an electric machine, disposed in a housing and having a rotationally mounted rotor and a sensor device, fixed to the housing, configured to detect a rotational position of the rotor;
• wherein the sensor device includes:
• at least one sensor element, and
• at least one electronic component connected electrically to the sensor element, the sensor element and the electronic component being disposed on one common printed circuit board of the sensor device,
• wherein the printed circuit board has at least a first rigid board part, a second rigid board part, and a flexible board part, the second rigid board part being joined to the first rigid board part by the flexible board part, the sensor element being disposed on the first rigid board part and the electronic component being disposed on the second rigid board part,
• wherein the drive device has an end shield, and the printed circuit board of the sensor device is secured to the end shield,
• wherein the printed circuit board includes a connector having a first contact section and a second contact section, the connector being configured for the electrical connection of the sensor device to a control unit, wherein the end shield has at least one axial through-hole, and at least the second contact section of the connector projects through the axial through-hole.

A pressure generator for a brake system, comprising:

• a pump device;
• and
• a drive device configured to actuate the pump device, the drive device including
• an electric machine, disposed in a housing and having a rotationally mounted rotor and a sensor device, fixed to the housing, configured to detect a rotational position of the rotor;
• wherein the sensor device includes:
• at least one sensor element, and
• at least one electronic component connected electrically to the sensor element, the sensor element and the electronic component being disposed on one common printed circuit board of the sensor device,
• wherein the printed circuit board has at least a first rigid board part, a second rigid board part, and a flexible board part, the second rigid board part being joined to the first rigid board part by the flexible board part, the sensor element being disposed on the first rigid board part and the electronic component being disposed on the second rigid board part,
• wherein the printed circuit board has a third rigid board part, and a further flexible board part, the third rigid board part being joined to the second rigid board part by the further flexible board part, and a connection device for the electrical connection of the sensor device to a control unit being disposed on the third rigid board part.