Servo brake for assisting braking of motor vehicle, has reaction body transmitting off-loaded part of reaction force from master cylinder to servo brake beyond threshold of intensity of control force, by off-loading part of push rod

摘要

#CMT# #/CMT# The servo brake has a push rod (206) which transmits an assisted braking force (264) to a master cylinder, where the master cylinder retroacts by a reaction force (250) on the servo brake. A reaction body (220) transmits an off-loaded part (260) of the reaction force from the cylinder to the servo brake beyond a threshold of intensity of a control force (254), by off-loading a part of the push rod. The push rod transmits the reaction force below the threshold of intensity of the force (254). #CMT# : #/CMT# Independent claims are also included for the following: (1) a master cylinder comprising a piston (2) a braking device of a vehicle comprising a master cylinder and a servo brake. #CMT#USE : #/CMT# Used for assisting a braking of a motor vehicle to automatically amplify a brake control generated by a driver of the vehicle or by an automatic device to ensure the braking of vehicle. #CMT#ADVANTAGE : #/CMT# The reaction body transmits a part of the reaction force from the master cylinder to the servo brake beyond the threshold intensity of control force, outside the servo brake, thus reducing complexity of the servo brake to the variation of braking ratio of vehicle and reducing fabrication costs. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic axial sectional view of a part of a braking device. 206 : Push rod 220 : Reaction body 250 : Reaction force 254 : Control force 260 : Off-loaded part 264 : Assisted braking force.