| 摘要 |
PURPOSE:To easily install a stage plate and improve the operability of mounting the stage plate even if a space for the mounting operation is absent on the rear surface or side surface of the stage plate. CONSTITUTION:In a fixing structure of a staircase 10, a leaf spring 23 projecting upward is provided on the rear side of a step face part 15A of a lower side staircase 15, while a leaf spring 25 projecting downward is provided on the rear side of a rise part 22B of the upper side stage plate 22. Press forces (a), (b) of both leaf springs 22, 25 urged in the directions opposite to each other are adapted to act on an unfixed stage plate 22 to fix the unfixed stage plate 22 horizontally to the fixed stage plate 15. |
