JPS63177527U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing the first embodiment of the device of the present invention, Fig. 2 is a plan view partially showing the connection of the assembly portion between the step board and the stringer, and Fig. 3 is the main part of the device. FIG. 4 is a diagram corresponding to FIG. 1 showing a second embodiment of the invented device, FIG. 4 is a diagram equivalent to FIG. 1 showing a third embodiment of the invented device, and FIG. 5 is a diagram showing still another modification of the invented device. This is a diagram equivalent to Figure 1. 1...Step part, 2...Tread part, 3...Elevation part, 1
4, 15, 19... Square pipe (cylindrical member), 16
...Stringer, 17...Shaft member. In each figure, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] A plurality of tiers consisting of a single plate body having a tread portion and an elevation portion formed by bending the tread portion; a plurality of cylindrical members respectively mounted and fixed; a pair of side girders arranged on both sides of the step plate and having inner surfaces of both side edges abutting end faces of the respective cylindrical members to maintain a separation distance; A plurality of shaft members are provided, the ends of which are inserted through the shaped members, and are removably fixed to the upper and lower edges of the girder on both sides to support the stepped plates, and each of the stepped plates is separated from each other. A staircase device characterized in that it is configured independently.