Title:
階段構造
Document Type and Number:
Japanese Patent JP6976911
Kind Code:
B2
Abstract:
To provide a staircase structure such that a bridgeboard has relatively large effective sectional area, footboards and a handrail can be securely supported, and outward appearance has elegance.SOLUTION: A staircase structure comprises a pair of right and left bridgeboards 1 made of a steel material, footboards 4 of a plurality of steps arranged over between the bridgeboards 1, and a handrail 6 supported by the bridgeboards 1 through a handrail support material 5. The bridgeboard 1 is constituted by welding an L-shaped steel material 2 sectioned in an L shape and a flat steel material 3 in a flat plate shape, and its cross section is shaped in a hollow U shape which is longitudinally long and has its upper part opened. The footboard 4 is supported by the L-shaped steel material 2 of the bridgeboard 1, and the handrail support material 5 is inserted into an inner space of the bridgeboard 1 from its upper opening to be supported in the space with the bridgeboard 1.SELECTED DRAWING: Figure 2
Inventors:
Rokusha Masanori
Kazuhiro Satori
Kumano Goto
Yuki Okumura
Moriwaki Yasutomi
Hitoshi Matsushita
Kazuhiro Satori
Kumano Goto
Yuki Okumura
Moriwaki Yasutomi
Hitoshi Matsushita
Application Number:
JP2018129401A
Publication Date:
December 08, 2021
Filing Date:
July 06, 2018
Export Citation:
Assignee:
TAKENAKA CORPORATION
International Classes:
E04F11/025; E04F11/18
Domestic Patent References:
| JP2015074935A | ||||
| JP56084630U | ||||
| JP2015148122A | ||||
| JP6158808A | ||||
| JP3115856U | ||||
| JP2279859A |
Foreign References:
| US6231031 |
Attorney, Agent or Firm:
Masahiro Miyaji