| 摘要 |
PROBLEM TO BE SOLVED: To reduce the effective space of the turning action of an actuation rod by disposing a lever arm having a first cam at its terminal and a cam shaft having a second cam arranged at a distant position from the first cam. SOLUTION: When a pincers jaw actuation mechanism 26 is in a close position, cam pins 74, 76 exist at the distal points of a stroke and a notch 84 exists at the extreme distal position of the stroke. Then, an actuation rod 52 is pressed to the terminal by the interaction of the notch 84 and an actuation wire home 86. The actuation rod 52 presses and turns the connected pincers jaws to put these jaws into the close position. When the pincers jaw actuation mechanism 26 is conversely put into an open position, the cam pins 74, 76 respectively move backward to move the notch 84 backward. As a result, the actuation rod 52 is attracted toward the base end side by the interaction of the notch 84 and the wire home 86 to put the pincers jaws 24 into the open position. The actuation rod 52 is moved by lateral motion and the effective space of the turning motion may be diminished by this constitution. |
