Spring operation device of circuit breaker

A spring operation device comprising:

• a closing shaft rotating to apply closing driving force to a movable contactor of a circuit breaker;
• a breaking shaft connected to the closing shaft in an axial direction and rotating to apply breaking driving force to the movable contactor of the circuit breaker;
• a plurality of springs having one ends connected to the closing shaft and the breaking shaft and the other ends fixed in position and provided along circumferences of the closing shaft and the breaking shaft in order to transmit elastic restoring force to the closing shaft and the breaking shaft to rotate the closing shaft and the breaking shaft;
• and
• a power transmission unit provided in a location in which the closing shaft and the breaking shaft are connected, connecting the closing shaft and the breaking shaft when a closing operation is performed, and releasing a connection between the closing shaft and the breaking shaft when a breaking operation is performed,
• wherein the plurality of springs are provided to have a rotationally symmetrical structure with respect to rotational axes of the closing shaft and the breaking shaft and cooperate with each other to rotate the closing shaft and the breaking shaft in a single direction, and
• wherein the closing shaft and the breaking shaft are coaxial and independently rotatable, and the plurality of springs include a plurality of closing springs connected to the closing shaft and a plurality of breaking springs connected to the breaking shaft.