UNIVERSAL SUPPORT MODULE WITH EXPANDED ADJUSTMENT RANGES Russian patent published in 2016 - IPC E04F11/00 

FIELD: construction.

SUBSTANCE: invention relates to structures of quick-mount stairs. Universal support module with expanded adjustment ranges comprises parallel vertical walls, connected by cylindrical surface with a horizontal slot in the lower part, and fastener element with a vertical slot. Parallel vertical walls are double, external and internal. External parallel vertical walls connected by cylindrical surface, are made as a solid rolled stock sheet, each of parallel vertical walls has two slots arranged in parallel at an angle of 1° to 89° to horizontal line. Each pair of slots of the adjacent external and internal parallel vertical walls is rigidly connected. Top edges of external parallel vertical walls with holes for attachment of stairs are bent outward at an angle of 90°. Fastener element is composed of vertical extreme sections of internal parallel vertical walls wich are bent outward from module, walls are made in the form of solid rolled stock sheets, at an angle of 30° to 60° and bent inside the module by edges of said sections composing the internal parallel vertical walls.

EFFECT: higher rigidity of support modules connection and manufacturability of their production, possibility to vary stairs levels and extended capabilities of changing the stairs height.

1 cl, 1 dwg