A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To provide spiral stairs having a step board with high strength while preventing an accident of falling to the outside.SOLUTION: Spiral stairs have a foundation 1, a support pole 2, a plurality of step boards 3 and a plurality of stringers 4. The support pole 2 is erected on the foundation 1. Each step board 3 is in a long plate-like shape, has an insertion hole penetrating in a thickness direction at one end in a longitudinal direction and has the support pole 2 inserted into the penetration hole. Each step board 3 is spirally arranged and shifted in the same rotational direction so that it is partially overlapped and supported each other from the lowest stage to the uppermost stage on the foundation 1. Each stringer 4 is erected on the foundation 1 and connects and supports the other end in the longitudinal direction of the plurality of step boards 3 arranged at an interval in a vertical direction.SELECTED DRAWING: Figure 1
【課題】外に落下する事故を防ぐとともに、踏板の強度が高い螺旋階段を提供する。【解決手段】基礎１と、支柱２と、複数の踏板３と、複数の縦材４とを有する。支柱２は基礎１の上に立設される。各踏板３は、それぞれ長形の平板状をなし、長手方向の一端に厚さ方向に貫通する挿入孔を有し、挿入孔に支柱２を挿入されている。各踏板３は、基礎１の上で最下段から最上段にかけて一部が重なりながら支持されて同一の回転方向にずらして螺旋状に配置される。各縦材４は、基礎１の上に立設され、上下に間隔をあけて配置された複数の踏板３の長手方向の他端を側部で接続して支持している。【選択図】図１
To provide spiral stairs having a step board with high strength while preventing an accident of falling to the outside.SOLUTION: Spiral stairs have a foundation 1, a support pole 2, a plurality of step boards 3 and a plurality of stringers 4. The support pole 2 is erected on the foundation 1. Each step board 3 is in a long plate-like shape, has an insertion hole penetrating in a thickness direction at one end in a longitudinal direction and has the support pole 2 inserted into the penetration hole. Each step board 3 is spirally arranged and shifted in the same rotational direction so that it is partially overlapped and supported each other from the lowest stage to the uppermost stage on the foundation 1. Each stringer 4 is erected on the foundation 1 and connects and supports the other end in the longitudinal direction of the plurality of step boards 3 arranged at an interval in a vertical direction.SELECTED DRAWING: Figure 1
【課題】外に落下する事故を防ぐとともに、踏板の強度が高い螺旋階段を提供する。【解決手段】基礎１と、支柱２と、複数の踏板３と、複数の縦材４とを有する。支柱２は基礎１の上に立設される。各踏板３は、それぞれ長形の平板状をなし、長手方向の一端に厚さ方向に貫通する挿入孔を有し、挿入孔に支柱２を挿入されている。各踏板３は、基礎１の上で最下段から最上段にかけて一部が重なりながら支持されて同一の回転方向にずらして螺旋状に配置される。各縦材４は、基礎１の上に立設され、上下に間隔をあけて配置された複数の踏板３の長手方向の他端を側部で接続して支持している。【選択図】図１
SPIRAL STAIRS
螺旋階段
AKITAYA YONEO (author)
2023-03-09
Patent
Electronic Resource
Japanese
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