Title:
STAIRCASE
Document Type and Number:
Japanese Patent JP2022147529
Kind Code:
A
Abstract:
To provide a staircase in which a stringer board can be easily engaged with a fixture.SOLUTION: A staircase includes a stringer board extending diagonally between the upper and lower floors of the frame, a fixture for fixing the upper end in the longitudinal direction of the stringer board to a vertically extending surface of the frame, and a tread supported by the stringer board. The longitudinal upper end surface of the stringer board is parallel to the surface of the frame. The fixture includes a surface fixing piece fixed to the surface with one surface facing the surface of the frame, a stringer fixing piece that protrudes vertically from the surface fixing piece and is fixed to the one side surface with one surface facing the one side surface of the stringer board, and an insertion portion protruding from the surface fixing piece toward the side where the stringer fixing piece protrudes, and having an arc-shaped portion at the tip thereof. The upper end surface of the stringer board is provided with a loose insertion recess in which the insertion portion is inserted with play in the vertical direction and the upper portion of the inner surface contacts the insertion portion.SELECTED DRAWING: Figure 9
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Inventors:
FUKUDA AKIHIKO
YAMATOMI SHIGEAKI
YAMATOMI SHIGEAKI
Application Number:
JP2021048805A
Publication Date:
October 06, 2022
Filing Date:
March 23, 2021
Export Citation:
Assignee:
EIDAI CO LTD
International Classes:
E04F11/025
Attorney, Agent or Firm:
Hidehito Kono
Tono Kono
Tono Kono