Abstract: A traction-type actuator includes a frame, a first actuating unit, a second actuating unit, a rotatable member and a traction member. The rotatable member is disposed on the frame. The first actuating unit and the second actuating unit are located at two sides of the rotatable member. The traction member has a strip shape and can be curved and wound. The traction member has two ends fixed to the frame and is in a tightened state. The traction member winds through the first actuating unit, and then winds on the rotatable member, and finally winds through the second actuating unit. When the first actuating unit is actuated, the second actuating unit will be towed, vice versa, the first actuating unit and the second actuating unit are push-pull by the traction member so that the rotatable member is turned clockwise and counterclockwise.

Abstract: A traction-type actuator includes a frame, a first actuating unit, a second actuating unit, a rotatable member and a traction member. The rotatable member is disposed on the frame. The first actuating unit and the second actuating unit are located at two sides of the rotatable member. The traction member has a strip shape and can be curved and wound. The traction member has two ends fixed to the frame and is in a tightened state. The traction member winds through the first actuating unit, and then winds on the rotatable member, and finally winds through the second actuating unit. When the first actuating unit is actuated, the second actuating unit will be towed, vice versa, the first actuating unit and the second actuating unit are push-pull by the traction member so that the rotatable member is turned clockwise and counterclockwise.