Patent ID: 8931757
Filing Date: 2015-01-13
Classification: H02J,H02P

Abstract:
1. An electric actuator comprising: a motor that receives a supply of electric power from an external power supply to drive a controlled element; and an electricity storing body that is charged through receiving a supply of electric power from the external power supply, wherein, at a time wherein the external power supply is cut off, the motor is driven forcibly by electric power stored in the electricity storing body, and when the arrival of the control element, driven by the motor, at a specific opening is detected, the supply of power from the electricity storing body to the motor is cut off, the electric actuator further comprising: a switch provided in a supply path of electric power from the electricity storing body to the motor, the switch opening and closing the supply path for electric power from the electricity storing body to the motor; a setting unit operated through receiving a supply of electric power from the electricity storing body in response to an instruction from an operator, the setting unit opening the switch provided in the supply path for electric power from the electricity storing body to the motor; a resetting unit operated through receiving a supply of electric power from the external power supply when the external power supply has been restored from being cut off, the resetting unit closing the switch that is provided in the supply path of electric power from the electricity storing body to the motor; and a setting-off unit that sets off the supply of electric power from the external power supply to the resetting unit after a specific delay time has elapsed.