PROBLEM TO BE SOLVED: To provide a clamp device capable of retaining stable clamp force and having a wide operation range.SOLUTION: The clamp device includes: a first tube body a second tube body a first rod part a second rod part a first gripper arm having a first clamp part and a first connection part and connected to the second tube body between the first clamp part and the first connection part a second gripper arm having a second clamp part and a second connection part, and connected to the first gripper arm or the second tube between the second clamp part and the second connection part a third rod part connected to the first connection part a fourth rod part connected to the second connection part a nut connected to the third rod part and the fourth rod part a screw engaged with the nut a first universal joint for fixing the screw a fifth rod part for fixing the universal joint a second universal joint to be fixed to the fifth rod part and a drive rod penetrating through a first tubular body and fixed to the second universal joint.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT
