Assisted braking device

An assisted braking device comprising a master cylinder, a common body fixed to said member cylinder and incorporating a motor and a distributor, a master piston mounted slidably in said master cylinder, pilot means including a pedal mounted on a pivoted pedal lever, assisting means comprising said motor, one movable element of which is adapted to cooperate with the master piston via interconnecting means, an assistance energy source, said distributor being adapted to supply the motor with assistance energy from the said source, control means adapted to control the distributor in response to the actuation of the pilot means and comprising an arm and a connecting rod, the arm acting on a movable element of the distributor and being articulated on the said interconnecting means, the connecting rod connecting the pedal lever to the arm via two articulation points, and safety means which are actuated if the assisting means break down, so as to displace the master piston under the effect of the action exerted on the pedal, the safety means comprising a safety rod which is independent of the distributor control means, one end of the safety rod being articulated on the pedal lever at an articulation point which is different from that of the connecting rod, and the other end of the safety rod being connected to the master piston independently of the motor.