JPS5924741Y2 - curved stairs - Google Patents

Description

[Detailed explanation of the invention] This invention has two tread plates 2 of different heights on the top surface of the box body 1.
, 3 and a box body 1 on the side of the lower footboard 2.
A bottom step board 4, which is separate from the box body 1 and has a shape symmetrical to the top step step board 3, is installed in parallel with the bottom surface of the landing board A.
The box body 1 and the lowest tread 4 are fixed to a frame 19 that supports the landing A, and the upper end of the lower straight staircase part 7 is connected to one side 5 of the lowermost tread 4. This also relates to a curved staircase in which the lower end of the upper straight staircase part 8 is connected to the side part 6 of the top tread 3 which is parallel to the side part 5 to which the lower straight staircase part 7 of the lowest tread plate 5 is connected. The purpose is to provide a curved staircase that has low processing costs, is easy to pack and assemble on-site, and does not waste material.

The present invention will be described in detail below according to examples.

The bottom surface of the box 1 is approximately trapezoidal, and two adjacent corners are right angles.

On the long side 9 and oblique side 10 of this box body 1, a short long side plate 11 and an oblique side plate 12 for the middle stage are provided upright, and on the short side 13 and the side 14 perpendicular to the short side 13 A tall short side plate 15 and an orthogonal side plate 16 are erected for constructing the top step board 3.

These long side plates 11° and oblique side plates 12. The short side plate 15 and the orthogonal side plate 16 are sealed to each other, and a substantially isosceles triangular tread plate 2 for the middle stage is installed on the long side plate 11 and the oblique side plate 12, which are erected on the long side 9 and the oblique side 10. On the higher short side plate 15 and the orthogonal side plate 16, a substantially trapezoidal top step board 3 is installed. The bottom step board 4 arranged on the side of the middle step step board 2 in alignment with the bottom surface of the box body 1 is simply a plate material, and has a completely symmetrical shape to the top step step board 4.

The box body 1 and the bottom step board 4 are made of plywood of the same thickness.

The bottom tread 4 and the box body 1' constitute a landing A of the stairs.

The linear stair section B has an upper step and a lower step, and a linear stair tread 18 is installed between two support plates 17 arranged opposite to each other so as to be successively higher.

Reference numeral 19 denotes a frame body on which the box body 1 and the lowermost step board 4 are placed, and has a substantially rectangular parallelepiped shape.

20.21 is a handrail. When packing the box body 1 and the bottom step board 4, do so after turning the bottom step board 4 over and aligning the top surface of the bottom step board 4 with the top surface of the top step board 3 of the box body 1. .

Then, the frame 19 is fitted into the corner of the space where the indoor curved staircase is to be installed, and the box 1 is placed on the upper surface of the frame 19, and a plate-shaped top plate is placed on the side of the lower tread 2. The lower step board 4 is arranged and linearly sealed to the upper surface of the frame 19.

At this time, the long side plate 11 and the orthogonal side plate 16 of the box body 1 are connected to the wall surface 22.
comes into contact with.

Also, the top tread 3 and the bottom tread 4 are the middle tread 2.
They are arranged symmetrically through the

The upper end of the lower straight staircase part 7 is connected to the long side 23 of the lowest tread 4, the lower end is connected to the floor surface part 24 below, and the long side 25 of the uppermost tread 3 is connected to the upper straight stair part 7. 8 is connected to the lower end thereof, and the upper end thereof is connected to the floor surface portion 26 of the upper floor.

Handrails 20 are provided on the side surfaces of the frame 19, the lower straight staircase part 7, and the upper straight staircase part 8.

In this invention, the landing is made of a box body having two high and low treads on its upper surface, and a bottom tread that is separate from the box body and has a shape symmetrical to that of the top tread of the box body. Because of the structure, when packing this box and the bottom tread, which are parts for the landing structure, the bottom tread can be turned over and stacked on the top tread of the box, making it possible to pack compactly. This has the advantage of being very convenient for storage and transportation, and the top surface of the bottom tread and the top surface of the top tread of the box body are not exposed to the outside because they are in contact with each other, and the top surface of the top tread is very convenient for storage and transportation. It has the advantage of being able to protect the top surface of the bottom step, and the upper end of the lower straight staircase is placed on the same level as the bottom surface of the box body, which has two treads, one high and one low, to the side of the lower step. At the same time, the lower end of the upper straight stair is connected to the side of the uppermost tread which is parallel to the side to which the lower straight stair of the lowermost tread is connected. When constructing the staircase, the box body, the bottom tread, and both the upper and lower straight steps can be mass-produced in advance at the factory and assembled on-site, reducing the cost of winding stairs and shortening the on-site construction period through mass production. It also has the advantage that the landing can be formed by simply arranging the box and the bottom tread and fixing them to the frame that supports the landing, making assembly easy. Furthermore, the bottom step board can be directly fixed to the frame supporting the landing, which has the advantage of reducing the need for extra parts to support the bottom step board.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the invention, Fig. 2 is a front view of the same, Figs. 3 and 4 are perspective views of an embodiment of the handrail, and Fig. 5 is the frame of the above. FIG. 6 is a perspective view of an embodiment of the box body and the bottom step board in a packed state; FIG. 7 is a perspective view of an embodiment of the box body; is a box, 2 to 4 are treads, 5 and 6 are sides, 7 is a lower straight staircase, 8 is an upper straight staircase, and A is a landing.

Claims (1)

[Scope of utility model registration request] The top surface of the box is formed by two treads of different heights, and on the side of the lower tread is a box with a shape that is symmetrical to the shape of the top tread and is flush with the bottom of the box. A landing is constructed by arranging separate bottom treads in parallel, the box body and the bottom tread are fixed to a frame supporting the landing, and the upper end of the lower straight staircase is connected to the bottom tread. A curved staircase that connects to one side and connects the lower end of the upper straight staircase to the side of the uppermost tread that is parallel to the side to which the lower straight staircase of the lowermost tread is connected.