Servo brake with emergency function for motor vehicle includes coupling element installed in power transmission arrangement between valve piston and reaction component and extends radially outwards into coupling position

摘要

The servo brake includes a coupling element (23) installed in the power transmission arrangement between the valve piston (7) and reaction component (18) and extends radially outwards into the coupling position. The coupling element is pretensioned radially outwards in the coupling position. A bevel face (32,33) is provided on the coupling element and with it interacts another bevel face (30,31) on a retaining component (29) which is axially movable relative to the valve piston.