| 摘要 |
PROBLEM TO BE SOLVED: To improve assembly work efficiency of a rung for lifting tool composed of a footboard and a non-slip mat.SOLUTION: A rung is configured by a metallic footboard 1 and a non-slip mat 2. The footboard 1 has a U-shaped cross sectional form with a front end 1a and a rear end 1b thereof folded inside in the approximately perpendicular direction. The non-slip mat 2 has an L-shaped cross sectional form with a front end 2a thereof folded inside in the approximately perpendicular direction. The front end 1a of the footboard 1 and the front end 2a of the non-slip mat 2 are fixed to each other with three clip type metal fittings 3-1, 3-2, 3-3 having a spring property; the rear end 1b of the footboard 1 and a rear end 2b of the non-slip mat 2 are fixed to each other with three clip type metal fittings 4-1, 4-2, 4-3 having a spring property. |
