Patent ID: 7994779
Filing Date: 2011-08-09
Classification: G01L

Abstract:
1. A method for continuously determining the tensile force F in a cable of a parking brake, comprising: transmitting the tensile force F in a parking brake cable to a cable grommet coupled to a first end of an expandable intermediate part, the expandable intermediate part comprising at least one of a magnet and a magnetic sensor, the first end of the expandable intermediate part facing away from a drive spindle coupled to a second end of the expandable intermediate part; changing the length of the expandable intermediate part in the direction of its longitudinal axis in response to the transmitted tensile force F; moving the magnet and the magnetic sensor relative to each other in response to the change in length; changing the signal voltage of the magnetic sensor in response to the relative movement between the magnet and the magnetic sensor; and determining the tensile force F from the respective signal voltage.