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    • 3. 发明专利
    • Stairs
    • JP4911765B2
    • 2012-04-04
    • JP2007009681
    • 2007-01-19
    • 株式会社ネイブレイン株式会社榊原
    • 脩以智 榊原
    • E04F11/02E04F19/08
    • PROBLEM TO BE SOLVED: To provide stairs superior in design, by remarkably improving construction efficiency. SOLUTION: The stairs are composed of an L-type box-shaped stairs base 1 arranged on a downstairs floor surface DF and forming lower two-stage stairs having the same riser (h), and a rectangular solid-shaped box stage 4 of respectively arranging a tread 2 and a riser 3 on an upper surface and a front face, that is, a plurality of stairs constituting bodies 6 of extending a downward continuous connecting plate 5 to the riser 3. The mutual stairs constituting bodies 6 join and fix a back face plate 7 opposed to the riser 3 and the connecting plate 5 so that a riser H of respective stages becomes the same height. The connected lowest-stage stairs constituting body 6 joins and fixes the connecting plate 5 and a back face plate 7b of the stairs base 1 so that its riser H becomes the same height as a riser H of the respective stages. The connected uppermost-stage stairs constituting body 6 joins and fixes its back face plate 7 to a downward wall HW suspended from an end part of an upstairs floor surface UF so that the height with the upstairs floor surface UF from its tread 2 becomes the same height as the riser H of the respective stages. COPYRIGHT: (C)2008,JPO&INPIT