Patent ID: 8089185

Claim:
An actuator having an output axis which is moved linearly by a rotatory force, and a boss for holding said output axis in such a way that the output axis can move linearly, wherein said actuator comprises a connecting member for propagating the linear motion of said output axis to an external device, said connecting member comprises a joint having a first end connected to said output axis, and a link plate having an end rotatably connected to a second end of said joint such that the link plate does not directly contact the output axis, and another end rotatably connected to the external device, and a mechanism for preventing rotation of said output axis is constructed of only a connecting portion for connecting said joint, said link plate, and said external device to one another, wherein the link plate is connected to the second end of the joint with a first pin in such a way that the link plate can rotate around a central axis of the first pin, and wherein the first pin has a rivet shape in which three cylinders having different diameters are connected in such a way that central axes of the three cylinders match one another.