| 摘要 |
<p>PROBLEM TO BE SOLVED: To facilitate the locking and unlocking operation easily by installing a locking pin member, which locks a unidirectional rotation mechanism at locking and unlocks it and allows an operation lever to rotate in either a gripper closing direction or opening direction at the time of unlocking. SOLUTION: When a locking mechanism 40 allows an operation lever 31 to be rotated in a closing direction of a gripper 20, it prevents the operation lever 31 to rotate in the gripper opening direction (to rotate in a direction opposite to that shown by the arrow A) by means of a unidirectional rotating mechanism 42. A lock pin 43 locks the unidirectional mechanism 42 at the time of locking and unlocks it and allows the operation over 31 to rotate in either the gripper closing or opening direction at unlocking. Due to this structure, locking and unlocking operation can be made easily with only one hand for gripping the operation lever 31.</p> |
