| 摘要 |
PROBLEM TO BE SOLVED: To provide a ceiling storage ladder capable of stabilizing a state to fold a ladder main body to make turning and taking in and out work thereof without making any damage in girder materials or any noise when the ladder main body is folded. SOLUTION: A ceiling storage ladder is so constituted that a ladder main body 7 is formed in a foldable manner by connecting an upper ladder member 3, a middle ladder member 4 and a lower ladder member 5 arranging treadboards 2 between girder materials 1 through pivots 6 and that the ladder main body 7 can be turned stored in a state to fold the ladder main body 7 into an opening section 9 of a ceiling 8. In that case, in a storing and folding state, a contact spacer 11 provided between the upper ladder member 3 and middle ladder member 4 is projected to the girder material 1 of the middle ladder member 4, and a contact projection 12 provided between the middle ladder member 4 and lower ladder member 5 is projected to a contact floor body 13 mounted to the lower end of the girder material 1 of the lower ladder member 5. |
