| 摘要 |
PROBLEM TO BE SOLVED: To provide a lock pin which is rotated by one worker and reduces the work hours, and to provide a lock pin rotation tool and a connection open structure.SOLUTION: A head part 31, an axis 32, and an engagement protrusion 33 are formed at a lock pin 3. A rotation direction engagement part 50 which continues into the heat part 31 and may engage in a rotation direction, and an engagement flange part 51, which continues into the rotation direction engagement part 50 and may engage in an axial direction, are formed at the engagement protrusion 33. |
