JPH11148213A - Step plate device for curved stairway - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily construct a curve for the connection between the linear parts of a curved stairway. SOLUTION: A plurality of tread board constituting all or part of a curved part are previously and integrally formed by bending metal plates. Specifically, one tread board 27 and 31 is vertically bent at one end into a panelling board 29 or 33 and the panelling board 29 or 33 is horizontally bent at its vertical end to integrally form another tread board 28 or 32. A metal tread board 21 or 34 is used for the curved part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a step board device for a curved staircase, and more particularly to a structure of a curved portion.

[0002]

2. Description of the Related Art In a conventional bent steel staircase, a turnboard unit as shown in FIG. 10 is provided between a lower girders extending from a first floor and an upper girders reaching a second floor. The installation provided a curved portion connecting the straight portions. In this rotating step unit, a plurality of substantially flat step plates (1) are assembled in a stepped manner via a plurality of angles (2).

[0003]

However, in the prior art, since the rotating plate unit is large and heavy,
The construction is a large-scale operation requiring a crane and the like, and there is a drawback that the work is troublesome and time-consuming.
In addition, since the rotating step unit has a complicated structure in which many members such as a plurality of step parts (1) and angles (2) are assembled by fixing members such as welding and bolts, productivity is poor. There were inconveniences.

SUMMARY OF THE INVENTION An object of the present invention is to provide a step board device which solves such conventional drawbacks, facilitates construction of a curved portion connecting straight portions, and improves productivity.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a bent portion connecting a straight portion and a straight portion, the step plate having a plurality of steps constituting a part or all of the bent portion. It is characterized by being formed in advance integrally by bending a metal plate.

Further, in the above, one end of one step plate is bent vertically to form a bent plate, and the vertical end of the bent plate is bent horizontally to form another step plate integrally. Conceivable.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described.
Explaining according to the construction order, in FIG. 2, (11) is a wall frame of an outer wall or a partition wall of a building, (12) is a beam mounted on the wall frame (11), and (13) is a beam of the beam.
The second floor beam parallel to (12) is shown.

The staircase in this embodiment is a curved staircase. First, a staircase is provided between a support frame (15) erected on a first-floor foundation concrete (14) and an intermediate portion of the wall frame (11). A pair of girders (16) and (16) are bridged. The upper ends of these girder beams (16) (16) are bent horizontally,
Sasara girders (17) and (18) are attached between the bent portions in the horizontal direction and the upper end, respectively. In addition, the tip side of the horizontal bent portion is a two-step bent portion, and one end of the tip of the sasara girder (18) is the same as the tip of the saber girder (16) on the bend direction side. Is bent so as to be one step higher through the steps (19) and (19) to form a second step.

As shown in FIG. 3, iron step boards (20) (20)... Of straight section and iron step boards (21) of bent section are attached to the above-mentioned sasara girs (16) and (16). Further, as shown in FIG. 4, the second floor side girder (22) (22) inclined in the opposite direction so as to connect to the girder (16) (16) is connected to the wall frame (11).
It is installed by bridging with the floor beam (13).

As shown in FIG. 5, the iron step board 20 of the straight portion is bent into a V-shape when viewed from the side, on the lower surface at both ends of a step board body 23 made of a strip-like iron sheet. Fixed mounting plates (24) and (24).
One of the inclined portions (25) of (4) is placed on the upper surface of the slab beam (16), and is fixed with bolts (26).

As shown in FIG. 1 (a), the stepped iron plate (21) of the bent portion is formed by appropriately bending an iron plate punched into a predetermined shape, thereby forming two steps of stepped plates (27) (28). ) Are integrally formed in advance, and specifically, one end of the first step board (27) is vertically bent to form an indentation plate (29), and the indentation plate (29)
Is bent horizontally to integrally form a second step plate (28). This steel step board (21)
(17) It is installed so as to cover from above (18), and is fixed with bolts (26) in the same manner as described above.

As shown in FIG. 4, the second floor side girders (22) and (22) have one lower girder (22) and the tip girders so that the lower end forms a two-step bent portion. The joint (30) is bent in two steps, and as shown in FIG. 6, an iron plate is previously bent at this portion in the same manner as described above, and the third and fourth bent portions are formed.
An iron step board (34) shown in FIG. 1 (b), in which the step boards (31) and (32) of the steps and the staking plate (33) connecting them are integrally formed, is installed.

As described above, the bent portion is formed by bending the iron plate to integrally form the two step plates (27), (28), (31), (32) and the recessed plates (29, 33). Only two very simple structures made of two steel steps (21) and (34) are connected to the sasara girder (22) and the sasara girder (17) (18)
(30) It is configured simply to be installed on top, and its construction is extremely easy. At the straight section on the second floor, iron stepboards (20) (20)... Similar to those on the first floor are attached.

The step board (20) mounted as described above
(21) On the upper surface of (34), adhesive (35) is partially applied as shown in FIG.
Then, wooden steps (36) and (40) are attached as shown in FIG.

FIG. 5 shows a structure of a mounting portion of the stepped plate (20) of the straight portion. As described above, the straight portion is provided at both ends in the longitudinal direction of the iron stepped plate (20). Adhesive (35) is applied in two rows along, and wooden board (36) is placed on it and adhered, and the board body (23) of iron board (20)
The bolt (37) inserted from the back of the wooden board (36) is screwed into the back of the wooden step board (36) and fixed.

A nut (38) having a screw formed on its outer periphery is screwed into the wooden step board (36), and the bolt (37) is screwed into the nut (38) and fixed. The bolts (37) are fixed at a plurality of places, for example, about three places at intervals in the longitudinal direction of the wooden step board (36). Note that a bolt hole for inserting a bolt (37) is formed in the step board body (23) of the iron step board (20) in advance.

The wooden stepboard (36) protrudes from the iron stepboard (20) in the front end direction, and the upper end of the wooden bumper (42) is inserted into the groove (41) formed on the back surface of the protrusion. The lower end of the wooden bumper plate (42) is fixed to the lower end of the lower wooden step board (36) by screws.

At the bent portion, wooden steps (40) are attached to the steps (27), (28), (31) and (32) of the iron steps (21) and (34), respectively. As with the straight section, each of these bolt holes (44) from the back of each step board (27) (28) (31) (32)
Is screwed into a nut with a screw previously screwed into the wooden step board (40) and fixed. In addition, between the upper wooden stepboard (40) and the lower wooden stepboard (40), the wooden boards are placed along the recessed boards (29) (33) of the iron stepboards (21) (34). A comb (42) is interposed.

At this stage, the first floor side girder (16)
Partition frame (45) between and the second floor side girder (22)
Is attached. (46) is a center pillar erected at the corner of the bent portion. As shown in FIG. 8, a wall plate (47) is attached to both sides of the partition wall frame (45), and a vertical portion along the center column (46) and a sasara girder (22) on the second floor are provided. Kasagi (48) and (49) are attached to the handrail at the upper end of the parallel partition wall, respectively.

In the above description, the lower end of the coping (48) attached to the vertical portion fits the protruding portion of the wooden step board (40) and the outer surface of the wooden embossing board (42) as shown in FIG. As described above, it is cut out in advance, so that it can be quickly mounted without newly processing on site.

[0021]

According to the present invention, since a plurality of steps constituting the bent portion are integrally formed in advance by bending the metal plate, the metal plate is required for forming the bent portion. It is only necessary to install a small, lightweight, and extremely simple structure metal stepboard that is simply bent, making it easier to construct the bent section than when installing a conventional round stepboard unit, and Productivity is improved by the simple structure.

[Brief description of the drawings]

FIG. 1 is a perspective view of an iron step board according to an embodiment of the present invention.

FIG. 2 is a perspective view of the stairs in a state where a first-floor girder is attached.

FIG. 3 is a perspective view of a stair in a state where an iron step board is attached to a first floor side slab.

FIG. 4 is a perspective view of the stairs in a state where the second floor side slab is attached.

FIG. 5 is a sectional view of a mounting portion of the wooden stepboard.

FIG. 6 is a perspective view of a stair in a state in which an iron step board is attached to a sasara girder on the second floor.

FIG. 7 is a perspective view of a stair in a state where an adhesive is applied to an iron step board.

FIG. 8 is a perspective view of a stair with a wooden step board and a stair partition wall attached.

FIG. 9 is a perspective view showing a mounting structure of a sash on a stair partition wall.

FIG. 10 is a perspective view of a conventional round plate unit.

[Explanation of symbols]

 (16) (22) Sasara girders (21) (34) Bent iron steps (27) (28) (31) (32) Steps (29) (33)

Claims (2)

[Claims] 1. A curved staircase in which a plurality of steps constituting a part or all of the curved part are integrally formed in advance by bending a metal plate in a curved part connecting the straight parts. Board equipment. 2. The step board according to claim 1, wherein one end of one step board is bent vertically to form a bent plate, and another end plate is integrally formed by bending the top end of the bent plate horizontally in a vertical direction. Step board device for curved stairs.