公开(公告)号：WO2021005385A1

公开(公告)日：2021-01-14

申请号：PCT/HU2020/000023

申请日：2020-07-10

Applicant: AKM METAL PLUSZ KFT.

Inventor： SZILÁGYI, Sándor

IPC: E04F11/025 ,  E04F11/035 ,  E04F11/112 ,  E04F11/16 ,  E04F11/02

Abstract: The subject of the invention is a modular staircase unit, the configuration of which staircase unit allows the easy and quick assembling of staircase units to form staircase flights with adjustable length and stair rise with adjustable height according to the requirements. The invention is modular staircase unit, which is established form fitting plates and stair tread. It is characterised by that the staircase unit (1) is formed with stair tread (4) fixed between identical fitting plates (2, 3) having an edge (14), the axis (tl) of the connecting extensions (12, 13) of whose fitting parts (2, 3) has an angle a relative to the edge (14), and two holes (10) having diameter D are formed in each connecting extensions (12, 13) in a way, that the centers of holes (10) aligned in parallel with axis (tl) are located at a distance K2 relative to each other, while the centers of holes (10) are aligned perpendicularly to the axis (tl) and are located at a distance K1 relative to each other, furthermore, the lower elongated holes (8, 9) are formed with a length LI and a width S in the fastening parts (22, 23) of the fitting plates (2, 3), where the distance between the axes (t2, t3) of elongated holes (8, 9) is Kl, and the axes (t2, t3) are aligned at an angle a relative to the edges (14) of the fitting plates (2, 3), furthermore, the upper elongated holes (6, 7) having a width S and a length L2 are formed beneath the edges (14) of the fitting plates (2, 3), and the stair tread (4) is fastened in parallel with the edges (14) of the fitting plates (2, 3) beneath the upper elongated holes (6, 7).