Servo-assisted activating unit for anti-lick braking system - has intermediate piston transmitting force to brake pedal by elements passing through control valve and bearing against striking plate

摘要

The activating unit for an anti-lock braking system has a master cylinder (2) connected to a vacuum servo-unit (1). The primary piston (19) of the master cylinder consists of an inner piston (20) guided in an outer piston (21). An intermediate piston (16) slides on the outer piston and forms a chamber (50) with the housing of the master cylinder. Forces generated in the chamber are transmitted to an activating rod (3) by at least two elements (33) passing through the control valve housing (30) and lying a short distance from a striking plate (34) fixed to the activating rod. ADVANTAGE - More compact unit.