The utility model belongs to the field of automobile electronic mechanical
brake system discloses a kind of electronic mechanical
brake system of driving and
parking brake coupling based on gear belt, and the
system includes: driving
brake motor, belt wheel system, planetary
gear train,
parking brake motor and its transmission
assembly, wherein, driving brake motor output end is fixedly equipped input gear, the output gear of belt wheel system is assembled in the sun gear input shaft of planetary
gear train, gear belt is engaged between input gear and output gear, to realize deceleration and damping, planetary
gear train is nested in the gear recess of output gear, driving
brake torque is output via
planet carrier output shaft, driving and
parking brake share output shaft, compact structure, realize
high transmission ratio,
high torque output, meet
electric vehicle high braking performance demand, gear belt has shock absorption and
load sharing function, reduce
noise, improve gear
train durability life, double motor
parallel arrangement and share output shaft design, significantly reduce axial and radial space, with high integration, high reliability and low maintenance cost
advantage.