Electronic caliper brake and operation method thereof

An electronic caliper brake comprising:

• a carrier on which a pair of pad plates are installed to advance and retreat;
• a caliper housing slidably installed on the carrier and provided with a cylinder in which a piston is installed to advance and retreat by a braking hydraulic pressure;
• a hydraulic pressure supply device configured to supply the braking hydraulic pressure to the cylinder;
• an actuator configured to provide a rotational force;
• a spindle member installed to penetrate through a rear portion of the cylinder and configured to rotate by receiving the rotational force of the actuator;
• a nut member configured to advance and retreat depending to the rotation of the spindle member to press and release the piston;
• and
• a power transmission device in which an input part is connected to an output shaft of the actuator and an output part is connected to the spindle member, and configured to transmit the rotational force of the actuator to the spindle member,
• wherein the power transmission device is provided to be flexible.

An electronic caliper brake comprising:

• a carrier on which a pair of pad plates are installed to advance and retreat;
• a caliper housing slidably installed on the carrier and provided with a cylinder in which a piston is installed to advance and retreat by a braking hydraulic pressure;
• a hydraulic pressure supply device configured to supply the braking hydraulic pressure to the cylinder;
• an actuator configured to provide a rotational force and comprising an actuator housing;
• a spindle member installed to penetrate through a rear portion of the cylinder and configured to rotate by receiving the rotational force of the actuator;
• a nut member configured to advance and retreat depending to the rotation of the spindle member to press and release the piston;
• and
• a power transmission device in which an input part is connected to an output shaft of the actuator and an output part is connected to the spindle member, and configured to transmit the rotational force of the actuator to the spindle member,
• wherein the caliper housing and the actuator housing are separately provided to be spaced apart from each other.