Torque sensor for an electric motor comprises a monolithic disk shaped receiving component with connection legs linking inner and outer flanges and having sensors attached to them, said component being inserted in the motor drive

摘要

Torque sensor in the form of a monolithic disk shaped receiving component (1). The sensor comprises outer (11) and inner (10) circular flanges, with force injection points, that are linked by radial connecting legs. Each connecting leg comprises a lower recess (15) with a u-shaped section and a thin membrane type connection on the plane surface of which is attached a measurement sensor. Approximately radially directed wall sections of the connecting legs have different wall strengths and so varying elasticity and stiffness. The invention also relates to a corresponding method and arrangement for determining the torque of an electric motor drive that is inserted prior to the motor gear train.