JPH032124U

JPH032124U -

Info

Publication number: JPH032124U
Application number: JP2095089U
Authority: JP
Priority date: 1989-02-16
Filing date: 1989-02-23
Publication date: 1991-01-10
Anticipated expiration: 2004-02-23
Also published as: JPH0711228Y2

Description

[Brief explanation of the drawing]

第１図はこの考案の実施例の断面拡大図、第２
図は同じく一部平面図、第３図は同じく階段の実
施例の一部正面図、第４図は同じくナツト溝とナ
ツトの嵌合実施例の一部断面拡大図、第５図乃至
第７図は同じく上下組立ユニツトの掛止部の他の
例を示す一部断面図で、第５図は自由端の屈曲片
を省略した図、第６図と第７図は挿入連結片を用
いた実施例の図である。１……Ｌ状鋼板、１ａ……蹴込み板、１ｂ……
踏板受板、２，２ａ……ナツト溝、３……ナツト
、５……チエツカー板、６……組立ユニツト、８
……ささら桁、１０……階段、１２……挿入連結
片。 Figure 1 is an enlarged cross-sectional view of an embodiment of this invention;
3 is a partial front view of the example of the staircase, FIG. 4 is an enlarged partial cross-sectional view of the example of fitting the nut groove and nut, and FIGS. 5 to 7 The figure is a partial cross-sectional view showing another example of the hanging part of the upper and lower assembly unit. Figure 5 is a diagram in which the bent piece at the free end is omitted, and Figures 6 and 7 are in which an insertion connecting piece is used. It is a figure of an Example. 1... L-shaped steel plate, 1a... riser plate, 1b...
Step plate receiving plate, 2, 2a... Nut groove, 3... Nut, 5... Checker plate, 6... Assembly unit, 8
... stringer, 10 ... stairs, 12 ... insertion connection piece.

Claims

[Scope of Claim for Utility Model Registration] 1. A checker plate is pasted onto the tread plate, which is an L-shaped steel plate consisting of a riser plate and a tread plate plate, and a bent latch for the upper stair assembly unit is attached to the upper part of the riser plate. The free ends of the tread plate and checker plate are provided with clamping parts for connecting to the lower stair assembly unit, and nuts for fixing stringers are provided at both front and rear edges of the tread plate. A steel staircase assembly unit made by fixing. 2. The steel staircase assembly unit according to claim 1, wherein the L-shaped steel plate and the checker plate are spot welded at predetermined intervals. 3. The steel staircase according to claim 1, wherein the checker plate is provided with a rising side wall, and the rising side wall is fitted into a fitting recess provided in the riser plate of the L-shaped steel plate, so that the checker plate and the L-shaped steel plate are pasted together. assembly unit. 4. A checker plate is pasted onto the tread plate, which is an L-shaped steel plate consisting of a riser plate and a tread plate plate, and a checker plate is attached to the top of the riser plate for connecting with an insertion connector when connecting the upper stair assembly unit. The bent pieces are arranged in a row,
Bent pieces are provided at the free ends of the tread plate and checker plate to connect the insertion connector when connecting the lower stair assembly unit, and nuts for fixing stringers are installed at both front and rear edges of the tread plate. A steel staircase assembly unit made by fixing. 5. A steel assembled staircase obtained by sequentially assembling the stair assembly units according to claim 1 or claim 4, abutting stringers on both sides, and fixing the staircase assembly units and the stringers with bolts.