Schaeffler Technologies Ag & Co .kg

Christian Schmitt

Tomas Smetana

Darius Dlugai

Christian Mock

Stephan Neuschaefer-Rube

Markus Neubauer

Jan Matysik

Florian Koniger

A hollow machine element for transmitting a force and/or a torque is provided. The hollow machine element forms a component of an assembly for measuring the acting force and/or torque by using inverse magnetostrictive effect. The hollow machine element extends along an axis and has a cavity that extends along the axis. The machine element includes at least one magnetization region for magnetization, and which includes a magnetostrictive material. A magnetic field measurable via the assembly can be caused by the magnetization and by the force and/or by the torque. The magnetization region is directed toward the cavity and has an axially central segment, in which the magnetization region is arranged at a radial distance from a ferromagnetic region of the machine element to define a gap therebetween. The gap may be empty or filled with insulation, to provide magnetic insulation.

Hollow machine element and assembly for measuring a force or a torque

The invention relates to a wheel bearing unit () for supporting a vehicle wheel which can be driven. This wheel bearing unit () includes a wheel hub () which forms a hollow space () and is rotatably supported by a wheel bearing () formed as a rolling bearing, wherein the wheel bearing is inserted () in a wheel carrier. Furthermore the wheel hub () is connected by a hub flange () to the vehicle wheel and reciprocally to the hub flange () by an end toothing () in positive engagement with a drive joint (). A measurement of a torque or a torsion takes place by a sensor () at an inner wall () of the hollow space () of the wheel hub ().

Driven wheel bearing unit with integrated torque measurement

Growing community of inventors

Niederwerrn, Germany

Christian Schmitt