Robotic prosthetic leg and method for driving robotic prosthetic leg

A robotic prosthetic leg comprising:

• an ankle bracket having first and second ankle brackets spaced apart from each other, wherein the first and second ankle brackets are connected with a rear upper side of a treading member;
• a driving part rotatably combined with the first and second ankle brackets and disposed between the first and second ankle brackets, and configured to transmit torque for the treading member to be rotated;
• a guide bracket having a base block and a guide conduit, wherein the base block is disposed between the rear upper side of the treading member and a lower side of the driving part, wherein the guide conduit is connected to the base block and extends along a longitudinal direction of the treading member;
• a wire having a rear end connected to the driving part and extending toward a front side of the treading member;
• a pressing part combined with a front end of the wire;
• and
• a first elastic member disposed between the base block and the pressing part to enclose the guide conduit, and configured to support the pressing part toward the front side of the treading member,
• wherein the wire passes through the guide conduit and is combined with the pressing part, and
• wherein the first elastic member encloses the guide conduit through which the wire passes.