Patent ID: 7073833

Claim:
A gripper comprising: a driving source for driving a translational portion that is moved in translation, said driving source being contained within a case; a displacement expanding member which is operable to grip an object, the displacement expanding member having one end connected to said translational portion, and another end being connected to said case, in which when said one end is pulled upon a movement of said translational portion, said displacement expanding member is displaced to grip the object at a common top end of the displacement expanding member; a plate-like stopper member connected to one end of said displacement expanding member and having a projecting piece around the outer periphery thereof; a first holder member having a cylindrical portion with a first notch for inserting loosely the projecting piece of said stopper member, and provided with a threaded portion around the outer periphery of said cylindrical portion; a locating nut for adjusting a predetermined gap from said stopper member by being threadingly engaged with said threaded portion of said holder member; and pressing means for pressing said locating nut.