ACTUATING UNIT FOR A HYDRAULIC BRAKE SYSTEM

摘要

An actuating unit for a brake system, comprises a pedal connection element that charges a booster piston with an actuating force. An elastically deformable reaction disk, absorbs the actuating and boosting forces of the booster and releases the sum of said forces to a working piston. An electrically controllable pressure supply device outputs pressure which acts upon the booster piston. The actuating unit further comprises an extension arm for detecting the differential path between the pedal connection element and the booster piston and a sensor device that detects the differential path. An electronic control unit receives the signals from the sensor device and uses said signals for controlling the pressure supply device. Differential path information is transported by the extension arm to a location near the sensor device that is radially and axially offset by the reaction disk.

主权项

1. An actuating unit for a hydraulic brake system comprising:
an actuating pedal; at least one operating piston of a master brake cylinder, having a brake boosting piston of a hydraulic braking force booster, said brake boosting piston being guided in a brake booster housing, so as to actuate the operating piston; a pedal connecting element for influencing the brake boosting piston with an actuating force; a reaction disc that can be deformed in an elastic manner, said reaction disc on one side receiving the actuating force and also the brake boosting force of the braking force booster and on the other side outputting the sum of these forces to the operating piston; an electrically controllable pressure providing device whose output pressure influences the brake boosting piston, having an instrument for ascertaining the differential travel between the pedal connecting element and the brake boosting piston; a sensor device of the instrument for ascertaining the differential travel, wherein an electronic control unit receives the signals that are output by the sensor device and uses said signals to control the pressure providing device; and at least one cantilever by way of which at least one portion of differential travel information for ascertaining the differential travel is transported to a location near the sensor device said location being radially and axially offset from the reaction disc.