Electromechanical brake system having multiple screw-nut mechanisms

An electromechanical brake system comprising:

• a pair of screw-nut mechanisms comprising first and second screw-nut mechanisms, each screw-nut mechanism comprising a rotatable body configured to be rotatable and a translatable body operably coupled with the rotatable body, the translatable body configured to be axially translatable relative to the rotatable body to move a brake pad assembly according to rotation of the rotatable body, wherein the rotatable body of the first screw-nut mechanism is provided with a first gear and the rotatable body of the second screw-nut mechanism is provided with a second gear;
• an actuator assembly configured to provide a torque;
• and
• a drive gear rotatably engaged between the first gear of the rotatable body of the first screw-nut mechanism and the second gear of the rotatable body of the second screw-out mechanism and operably connected to the actuator assembly to be rotated by the torque of the actuator,
• wherein the actuator assembly comprises:
• a motor having a motor shaft, and
• a belt drive mechanism operably connecting between the motor shaft and the drive gear engaged between the first and second gears of the rotatable bodies of the first and second screw-nut mechanisms.