Abstract: The present invention comprises: a rod used as a rod-shaped member; an electroconductive polymer actuator having an electroconductive polymer that expands and contracts in a prescribed direction due to electric current; and an electromagnetic actuator having a fixed magnetic pole part in which the magnetic pole arrangement is fixed, and a variable magnetic pole part in which the magnetic pole arrangement is changed by switching of electric current, the fixed magnetic pole part and the variable magnetic pole part moving relative to each other due to the magnetic pole arrangement of the variable magnetic pole part being changed. The fixed magnetic pole part or the variable magnetic pole part is connected to the electroconductive polymer so that the relative movement direction of the fixed magnetic pole part and the variable magnetic pole part matches the expansion-contraction direction of the electroconductive polymer, and the rod is connected to the electroconductive polymer.

Abstract: An electric actuator device is provided with: an electric actuator body that has a first fulcrum connected to a rudder surface side of an aircraft and a second fulcrum connected to the aircraft body side, and is driven by an electric motor such that the first fulcrum and the second fulcrum can be brought closer together and drawn further apart; a support member for advancing/retracting between a support position at which the support member supports the first fulcrum or the second fulcrum thereunder, and a retracted position at which the support member is retracted from under the first fulcrum or the second fulcrum; and a retention member for retaining the first fulcrum or the second fulcrum when the support member is located in the retracted position.

Abstract: The present invention comprises: a rod used as a rod-shaped member; an electroconductive polymer actuator having an electroconductive polymer that expands and contracts in a prescribed direction due to electric current; and an electromagnetic actuator having a fixed magnetic pole part in which the magnetic pole arrangement is fixed, and a variable magnetic pole part in which the magnetic pole arrangement is changed by switching of electric current, the fixed magnetic pole part and the variable magnetic pole part moving relative to each other due to the magnetic pole arrangement of the variable magnetic pole part being changed. The fixed magnetic pole part or the variable magnetic pole part is connected to the electroconductive polymer so that the relative movement direction of the fixed magnetic pole part and the variable magnetic pole part matches the expansion-contraction direction of the electroconductive polymer, and the rod is connected to the electroconductive polymer.

Abstract: An electric actuator device is provided with: an electric actuator body that has a first fulcrum connected to a rudder surface side of an aircraft and a second fulcrum connected to the aircraft body side, and is driven by an electric motor such that the first fulcrum and the second fulcrum can be brought closer together and drawn further apart; a support member for advancing/retracting between a support position at which the support member supports the first fulcrum or the second fulcrum thereunder, and a retracted position at which the support member is retracted from under the first fulcrum or the second fulcrum; and a retention member for retaining the first fulcrum or the second fulcrum when the support member is located in the retracted position.