JPS63177528U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a perspective view of an assembled staircase according to an embodiment of the present invention, Fig. 2 is a perspective view of its disassembled state, and Figs. 3 a to e are perspective views showing the assembly steps of the assembly staircase, respectively. Figure 4 is a front view of the connecting part of the center pillar part, Figure 5 is a sectional view of the connecting part between the support part and the landing board, and Figures 6 and 7 are perspective views showing the usage of the assembled staircase. It is a diagram. In the drawings, 1 is the stair body, 2 is the middle pillar part, 3 is the step plate part, 3a is the upper edge (support part), 3b is the lower edge (support part), 4 is the beam part, and 5 is the sleeve splice joint. 9 is the bolt, and 10 is the landing board.

Claims (1)

[Scope of utility model registration request] A stair main body in which a middle pillar part, a step board part, and a beam part protruding from the middle pillar part are integrally molded from precast reinforced concrete, and a landing board molded from precast reinforced concrete attached to the stair main body, the step board When the stair main bodies are stacked and the middle pillars are connected to each other by alternating the positions of the stair pillars with respect to the middle pillars, the supporting parts that support the landing board together with the beam parts are connected to the lower floor stair main body. An assembled staircase characterized in that it is provided at the upper edge of the tread part of the upper staircase body and the lower edge of the tread part of the upper staircase main body.