| 摘要 |
PROBLEM TO BE SOLVED: To achieve safety at a time of fastening by a socket wrench in a nut runner device and power-up thereof.SOLUTION: A socket cover structure in a nut runner device in which plural stopper pins (43) having a spring (50) between a ring-shaped groove part (40) of a socket cover (10), which is provided at an end part (2Aa) of a nut runner (2A) and on an outer peripheral side of a socket wrench (4), and the end part (2Aa). The socket cover structure is so configured as to make the socket cover (10) as to be movable in axial direction (A) and to achieve safety and power-up during rotation of the socket wrench (4).SELECTED DRAWING: Figure 5 |
