| 摘要 |
PROBLEM TO BE SOLVED: To provide a slip-off preventing structure of a scaffolding jack preventing a leg from slipping off from a base jack. SOLUTION: A body 15 of a slip-off stop implement 11 is fitted to the outer periphery of a rotation body 13 with a handle. The slip-off stop implement 11 comprises a plate spring piece 16 provided projecting from the body 15. The plate spring piece 16 presses and holds the leg 14 between itself and a base jack 12 and energizes the leg 14 toward the outer peripheral surface of the base jack 12. The plate spring piece 16 has a recess 19 for locking a projecting part 18 of the leg 14, in a pressing surface for pressing the leg part 14. The leg 14 of a jamb can thereby be fixed to the base jack 12 and prevented from slipping off from the leg 14 even if lifted from the leg 14 of the jamb. COPYRIGHT: (C)2008,JPO&INPIT
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