JP2998001B2 - Assembling stairs - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a prefabricated staircase.

[0002]

2. Description of the Related Art There are various types of stairs, but most of metal stairs are assembled by welding each part, and welding is performed in advance at a factory or on site. Either way, it takes time. Moreover, in the case of factory welding, the transportation cost of the assembled stairs is high.

[0003] The present invention provides an assembling staircase that can be easily assembled on site by an unskilled person, can be easily transported, and can reduce transportation costs.

[0004]

According to the present invention, there is provided an assembling stair, comprising: a left and right base rod having a lower end detachably attached to a base plate and an upper end detachably attached to a support;
An elliptical hole whose major axis forms the front-rear direction is formed in each of the left and right extra ends, and a rising plate is formed in a rear portion while leaving the left and right extra ends, and a rearward upper flange is formed in an upper edge of the rising plate. Drill holes for left and right holes of the upper flange, holes corresponding to the bolt holes at the front, and a tread plate with holes for balustrade mounting at the left and right extra ends. The left and right elliptical holes of the tread plate are fitted into the left and right base rods, and nuts are passed through bolts into the front hole of the upper tread plate and the hole of the upper flange of the lower tread plate, thereby tightening the tread plate with the left and right base rods. In the same manner, the upper step board is sequentially attached to the left and right base rods in the same manner, and the bolts provided at the lower ends of the vertical rails of the balustrade are passed through holes drilled at the left and right extra ends of the step board, and the bolts are fixed with nuts. Some as the installed structure footplate.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to specific examples shown in the accompanying drawings. Reference numeral 1 in the figure denotes a base plate, which is fixed to the ground or floor by a stopper such as an anchor bolt inserted into the hole 2.

On the base plate, there are provided bearing portions 3, 3 on which the tips (lower ends) of left and right base rods 4, 4 formed of round pipes are removably attached by horizontal pins 5, 5, respectively. The rear end (upper end) of the base rod is removably attached to the upper ends of left and right columns 6, 6 formed of square pipes by horizontal pins 7, 7, so that the base plate 1 is tilted forward.
It is passed between the columns 6. The columns 6, 6 have their lower base plates 8, 8 fixed to the ground or the floor surface by fasteners such as anchor bolts, and reference numeral 9 denotes a hole for inserting fasteners.

Reference numeral 10 denotes a tread plate, which has left and right extra ends 10a and 1a.
A rising plate 10b is formed at a rear portion except for the upper end 0a, and elliptical holes 11, 11 having a major axis in the front-rear direction are formed at left and right extra ends 10a, 10a, and a downwardly directed lower flange is formed at a front edge. 10c, a rearward upper flange 10d is formed on the upper edge of the rising plate.

The tread plate has elliptical holes 11 at the extra end.
Are sequentially fitted from the upper part to the left and right base rods 4, 4 in the state where the upper ends are not yet attached to the left and right columns 6, 6, and then the front hole 16 of the upper step board and the upper flange 1 of the lower step board.
The bolts 14 passing through the holes 17 of 0d are fastened by fixing the nuts 15 to the base rods 4 and 4 so as to be sequentially attached. In this way, the upper ends of the left and right base rods 4 and 4 are attached to the upper pins 7 and 7 of the left and right columns 6 and 6.

After the mounting of the tread plate, the bolt 21 at the lower end of the vertical rail 19 of the balustrade 20 composed of the handrail pipe 18 and the vertical bar 19 is passed from above through a hole 22 formed in the extra end of the tread plate 10, and a nut 23 is used. After stopping, the balustrade 20 is erected on the left and right sides of the tread.

When the balustrade 20 is long, a plurality of handrail pipes 18 may be connected by a joint 24. The balustrade 20 and the vertical rail 19 may be welded to the handrail pipe in advance, or may be detachably attached to the handrail pipe. In the drawing, reference numeral 25 indicates a skirting board for blindfold.

In the above embodiment, the steps are straight, but there are cases where the steps are spiral.

[0012]

Since the assembly type staircase according to the present invention has the above-mentioned structure, there is no need to weld it, and even an unskilled person can easily assemble it on site, and it can be easily transported and transported. Can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a prefabricated staircase according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view taken along the line III-III of FIG. 2;

FIG. 4 is an enlarged side view of a main part of FIG. 2;

FIG. 5 is a perspective view of a tread plate.

FIG. 6 is a perspective view showing a part of the stairs.

FIG. 7 is a diagram showing a connection part of a handrail pipe in a cutaway manner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base plate 2 Stopper hole 3 Bearing part 4 Base rod 5 Horizontal pin 6 Post 7 Horizontal pin 8 Base plate 9 Stopper hole 10 Tread plate 10a Extra end 10b Rise plate 10c Lower flange 10d Upper flange 11 Oval hole 14 Bolt 15 Nut 16, 17 Bolt through hole 18 Handrail pipe 19 Vertical rail 20 Railing 21 Bolt 22 Railing mounting hole 23 Nut 24 Joint 25 Skirting board

Claims (1)

(57) [Claims] (A) A left and right base rod which is removably attached at a lower end to a base plate and is detachably attached at an upper end to a support. An elliptical hole is formed, a rising plate is formed at the rear, leaving the left and right extra ends, and a rearwardly directed upper flange is formed at the upper edge of the rising plate. A tread plate having a hole corresponding to the bolt passing hole at the front and a balustrade mounting hole at the left and right extra end portions, and the left and right oval holes of the tread plate are provided. Attach to the left and right base rods, attach the treads to the left and right base rods by tightening nuts through bolts into the holes at the front of the upper tread plate and the holes at the upper flange of the lower tread plate, and so on. Left and right base rods Mounting, prefabricated stairs made by attaching the balustrade to the footplate by Nut bolts through the holes drilled bolt provided vertically 桟下 end of balustrade to the right and left extra end of the footboard.