Abstract
A wire gripper includes a second link arm, a connection member, a stationary-side wire gripping portion, and a moveable-side wire gripping portion. The second link arm is rotatably connected by a main body. The connection member is connected to the second link arm. The moveable-side wire gripping portion is movable in a direction approaching or being spaced from the stationary-side wire gripping portion in conjunction with movement of the connection member. The wire gripper includes a ratchet mechanism that blocks rotation of the operation lever in conjunction with rotation of the second link arm in one direction and allows reverse rotation in the other direction. The ratchet mechanism blocks rotation, so that movement of the moveable-side wire gripping portion in a direction being spaced from the stationary-side wire gripping portion.