Electromechanical brake having a force sensor
AssigneesZF Active Safety US Inc., ZF Active Safety GmbH
InventorsGalus Chelaidite, Karlheinz Schaust, Thomas Klug
Life of this patent
Estimating the term…
Abstract
An assembly for an electromechanical brake of a vehicle having a caliper assembly driven by a motor includes a cup gear or a drive disk for receiving torque from the motor and transferring the torque to a spindle. A piston is coupled to the spindle or a ball ramp and moves axially relative to the spindle in response to rotation of the spindle to brake the vehicle during a braking operation. A force sensor is aligned with the spindle and cup gear for sensing a reaction force applied to the piston during the braking operation. A thrust bearing is provided for transferring the reaction force from the cup gear to the force sensor.
Claims21
An assembly for an electromechanical brake of a vehicle having a caliper assembly driven by a motor, comprising:
- a cup gear for receiving torque from the motor and transferring the torque to a spindle;
- a piston coupled to the spindle and moving axially relative to the spindle in response to rotation of the spindle to brake the vehicle during a braking operation;
- a force sensor aligned with the spindle and cup gear for sensing a reaction force applied to the piston during the braking operation;
- and
- a thrust bearing for transferring the reaction force from the cup gear to the force sensor.
An assembly for an electromechanical brake of a vehicle having a caliper assembly driven by a motor, comprising:
- a spindle;
- a piston coupled to the spindle and moving axially relative to the spindle in response to rotation of the spindle to brake the vehicle during a braking operation;
- a cup gear for receiving torque from the motor and transferring the torque to the spindle;
- a housing for receiving the cup gear and at least a portion of the spindle and the piston;
- a button force sensor aligned with the spindle and cup gear for sensing a reaction force applied to the piston during the braking operation;
- a thrust bearing for transferring the reaction force from the cup gear to the force sensor;
- a load flange received by the cup gear and positioned axially between the spindle and the force sensor for transferring reaction force from the cup gear to the force sensor;
- and
- a controller connected to the button force sensor and configured to adjust the torque applied to the spindle in response to receiving signals from the force sensor indicative of the reaction force.
Dependencies are inferred from the claim text.