| 摘要 |
PROBLEM TO BE SOLVED: To provide a fastening tool capable of reducing operation force of a lock lever in locking and unlocking, and suppressing failure in locking due to abrasion and rattling.SOLUTION: A fastening tool includes a holder formed into the cylindrical shape, fixed to an end portion of an outer pipe at one end, forming a cylindrical sliding space between an inner peripheral face and an outer peripheral face of an inner pipe, and having an engagement projecting portion on one end of the sliding space on the inner peripheral face, a slider formed into the cylindrical shape to be axially slidable and movable in the sliding space, having a first engagement portion capable of being engaged with and disengaged from the engagement projecting portion at one end side, having a second engagement portion at the other end side, and having an elastically deformable diameter-reduced portion at one of the end sides, and a pair of lock levers having a pressurizing portion engageable with the second engagement portion on a circular arc-shaped inner edge corresponding to the inner pipe, and slidably supported with reference to an oscillation shaft along an axis by the holder.SELECTED DRAWING: Figure 6 |
