Actuator device, actuator band, and method for manufacturing actuator band

An actuator device, comprising:

• an actuator band;
• and
• a control device,
• wherein
• the actuator band comprises a plurality of actuator single wires;
• the plurality of the actuator single wires are braided, knitted or woven;
• first ends of the plurality of the actuator single wires are connected to each other;
• second ends of the plurality of the actuator single wires are connected to each other;
• each of the plurality of the actuator single wires comprises an actuator wire and a mesh-shaped heating element which covers a side surface of the actuator wire and comprises a plurality of heating wires;
• the actuator wire is formed of a fiber consisting of a polymer;
• the fiber is twisted around the long axis thereof;
• the fiber is folded so as to have a shape of a cylindrical coil;
• the actuator wire is contracted by heat and restored by release of the heat;
• a first end of the mesh-shaped heating element is connected to a first end of the actuator wire;
• a second end of the mesh-shaped heating element is connected to a second end of the actuator wire;
• the control device is configured to supply, to the mesh-shaped heating element, electric power for heating the mesh-shaped heating element;
• and
• the actuator band is configured to be contracted along the longitudinal direction thereof by the heat in a state where tension has been applied along the longitudinal direction thereof.