| 摘要 |
PROBLEM TO BE SOLVED: To perform automatic break of current application and prevent the circuit break caused by the short circuit by tearing off a power cord, etc., accompanied by a violent fall, etc., by outputting a power cut signal based on a shock or vibration detection signal, and breaking input pore to the output side. SOLUTION: A vibration detection system of breaker 2 is fixed to the floor, and at normality, the current from a plug socket is relayed to the main body of an office apparatus. When power is turned on, pressure detection sensors 15-17 detect the acceleration in X-Z directions added to a steel ball, and input the detection result into a controller board 22. Then, if the absolute value of the acceleration by vibration is 80gal or over, the controller board 22 turns off a relay 21, and breaks the current to the body of an office apparatus. Moreover, the vibration detection system of breaker 2 breaks the power, with its transferable electrode and fixed electrode separating each other, when a tension exceeding a specified value is applied to an AC cord 3. |
