PROBLEM TO BE SOLVED: To provide a seismoscopic actuation unit that is capable of being easily attached to an existing vibration prevention apparatus or an electric breaker externally and securely executes earthquake measures or makes an electric breaker be in a cut-off state to prevent expansion of earthquake disaster or energization fire in the case of an earthquake.SOLUTION: A seismoscopic actuation unit comprises: a pressing part for applying external force to a sensitive part of an actuation object; an actuation slider that includes the pressing part at its tip and is movable in a direction for making the sensitive part function and the direction reverse to the direction; a drive part that is attached to a main body and includes an elastic body for making the actuation slider move in the direction for making the sensitive part function; and a movement inhibition part composed of a fitting part and a fitted part for inhibiting the actuation slider made to be in a movement standby state from moving in the direction for making the sensitive part function. The drive part includes the fitted part that makes the movement inhibition part function when being fitted by the fitting part and stops the function of the movement inhibition part when not being fitted by the fitting part.
展开▼
