JPH0714529Y2 - Bent stairs - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a bent staircase of U-shape, L-shape, etc., and can be used for prefabricated houses and the like.

[Prior Art] Conventionally, when constructing a bent staircase such as an L-shaped wooden panel structure, a plurality of triangular step plates are attached to a part (sleeve wall) of the wall body for forming the staircase. There is. As a conventional technique for attaching the step plate to the sleeve wall, there is a method in which a notch groove having a different shape is formed at a different position of the sleeve wall, and the inner end of the step plate is fitted and fixed to the notch groove. (Actual public Sho 62-
No. 37883 bulletin).

[Problems to be solved by the device]

However, in the above-mentioned conventional example, it is necessary to form cutout grooves of various shapes in the sleeve wall in accordance with the shape of the step plate, and when forming the cutout grooves roughly, the grooves must be embedded. Therefore, there is a problem that the productivity is inferior in both factory processing and on-site processing. Further, there is also a disadvantage that a load is applied to the step plate fitted in the notch groove, a crack is generated from the notch groove, and the sleeve wall must be replaced.

It is an object of the present invention to provide a bent staircase with improved productivity.

[Means for Solving the Problems]

In the present invention, conventionally, a member for receiving a step plate such as a sleeve wall in which a notch groove is formed is configured as a step plate receiving shaft and a step plate receiving bundle. Specifically, the present invention is directed to a bending center of a bent staircase, for example, a step plate receiving shaft attached to an end of a sleeve wall and erected on a base, and the step plate receiving shaft is vertically bent around the bending center. A plurality of step plates arranged in a spiral shape so as to partially overlap each other, and a step plate receiving bundle which is interposed between these step plates and receives a load of the step plate located above, are provided. The shaft has a protrusion at the bottom, and the lowermost step plate is supported on the protrusion, and the step plate bundle and the upper step plate are alternately arranged on the lowermost step plate. It is a thing.

[Action]

In the present invention thus configured, in the factory or the like, first, the step plate, the step plate receiving shaft, and the step plate bundle are processed, respectively, and then these staircase components are assembled in the factory or on site. At this time, an apparatus having a relatively simple structure can be used for processing the step forming members such as the step plate. In this assembly, various means such as nailing, screwing, and bonding are used.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1 where the plane of the stairs is shown, the wall has a U-shaped cross section.
A curved staircase 1 is composed of a space partitioned by 1A and a sleeve wall 1B surrounded by the wall 1A. A U-shaped bent staircase 2 according to the present embodiment is attached to the staircase 1, and the bent staircase 2 includes a first straight staircase part 3, a bent part 4, a landing 5, and a second straight staircase part 6. Is
These are arranged in this order from bottom to top.

The bent portion 4 has a unitized structure, and specifically has the following configuration shown in FIGS. That is, the bent portion 4 is provided with a base 10 at a lower portion thereof, and a step plate receiving frame 11 is provided on the wall 1A side of the base 10 and an end portion 1C of the sleeve wall 1B, that is, a bent center portion side of the bent staircase 1. A plurality of laminated plywood stepped plate receiving shafts 12 are respectively provided upright. On the step plate receiving frame 11, the first to third step plates 31 to 33 are spirally arranged with the step plate receiving shaft 12 as a bending center so as to partially overlap with each other in the vertical direction. The inner end of the first step plate 31 is supported on the lower protrusion 12A of the step plate receiving shaft 12, and the load of the second step plate 32 is received between the first step plate 31 and the second step plate 32. A pentagonal prism-shaped first stage plate bundle 41 and a triangular prism-shaped second stage plate bundle 42 between the second stage plate 32 and the third stage plate 33, which receive the load of the third stage plate 33, respectively. It is installed. These plate bundles 4
1, 42 is a step plate receiving shaft 12 by an adhesive and screws (not shown)
It is fixed to. A step board receiving bundle 43 of plywood is fixed with screws or the like on the projection 12A of the step board receiving shaft 12, and the inner end of the step board 34 is supported on the upper part of the receiving bundle 43, and the step board 34 is reinforced by its lower surface. It is supported by material 13.

Between the first to third step plates 31 to 33 and the tread plate 34, there is arranged a recess plate 14, and the upper parts of these recess plates 14 are the step plates 31 to 33.
It is engaged with the groove 15 on the lower surface of the step plate 34 and the step plate 34, and its lower part is fixed to the back surface of the step plates 31 to 33. A gap S is formed between the bent portion 4 thus configured and the wall 1A so that the bent portion 4 can be easily housed in the staircase 1 and the wall 1A has an L-shaped cross section. The receiving bar 16 is attached, and the lower protruding portion 16A of the receiving bar 16 is the base 10
Is configured to support the lower surface of the.

As shown in FIG. 1, the first and second straight staircase portions 3 and 6 include a plurality of step plates 20.
And the side girders 21 that support the step plate 20 on both sides thereof, and the step plate 20
The unit structure is made up of a sliding board 22 attached between them. The side girder 21 is formed such that the dimension between them is shorter than the dimension between the both walls 1A, 1B, and is a receiving bar (not shown) having the same structure as the receiving bar 16, and is inclined along the slope of the stairs. The bottom part is supported.

Between the bent portion 4 and the wall 1A and the first and second straight staircase portions 3,6
Between the two walls 1A and 1B, a plasterboard, a face material, a decorative member (not shown) such as a veneer is interposed so that fire prevention measures and appearance of the staircase 1 may not be impaired. Has become.

In order to attach the bent staircase 2 of the present embodiment configured as described above to the staircase room 1, first, the bent part 4, the first part 1,
2 The straight staircase parts 3 and 6 are manufactured as a unit. Therefore, in a factory or the like, the first to third step plates constituting the bent portion 4
After processing 31 to 33, the step plate 34, the step plate receiving shaft 12, the step plate receiving bundle 43, the first and second step plate receiving bundles 41, 42, etc. with a slope movable elevator saw or the like,
Assemble these. Similarly to this, the first and second straight staircase sections 3,6
After processing the step plate 20, the side girders 21, the indentation plate 22 and the like constituting the above, these are assembled.

After that, at the time of assembling or after assembling the both walls 1A, 1B, a receiving bar 16 processed into a predetermined shape is attached to the walls 1A, 1B. Next, the unitized bent portion 4 and the first and second straight staircase portions 3 and 6 are unloaded from the upper part of the staircase 1 using a crane or the like. At this time, the bottom of the base 10 of the bent portion 4,
The bottoms of the side girders 21 of the straight staircase portions 3 and 6 are respectively the receiving bars 1
6 so that it abuts on the upper portion of the protruding portion 16A. Further, the landing 5 is created and constructed on the staircase 1 by a usual method. The landing 5 may be unitized in a factory and installed on site. After that, the bent portion 4, the first and second straight staircase portions 3 and 6 are fixed to the walls 1A and 1B from the side of the staircase 1, and a mounting member such as a gypsum board is provided between these and the walls 1A and 1B (Fig. (Not shown).

According to the present embodiment as described above, the members for receiving the first to third step plates 31 to 33 are configured by the step plate receiving shaft 12 and the first and second step plate receiving bundles 41, 42, and these members are simplified. Since it has a simple shape, it can be processed accurately and easily by a device having a relatively simple structure. As a result, it is not necessary to form a notched groove having a complicated shape as in the conventional case, and the productivity of the bent staircase 2 can be made factory. Therefore, in order to support the step plates 31 to 33, since it is not necessary to form a notch groove in the step plate receiving shaft 12, it is possible to avoid the disadvantage of the conventional example due to damage from the notch groove, further, Since it is possible to standardize and manufacture the step plate receiving shaft 12 and the like at the factory, the accuracy of mounting the stairs is improved. In addition, in this embodiment, the bent portion 2 and the first and second straight staircase portions
Since 3 and 6 are unitized and a gap is formed between these and the walls 1A and 1B, the stairs can be easily constructed and the construction time can be shortened. Further, since the receiving bar 16 is used when the bent portion 2 and the like are housed in the staircase 1, it is possible to improve construction safety and mounting accuracy. In addition, since the stepped plate receiving shaft 12 is formed by laminating a large number of plate materials, the lower protrusion 12
No stumps are generated when forming A, and the stairs can be made inexpensive.

Although the bent staircase 2 has a U-shape in the above-described embodiment, the second straight staircase portion 6 may be omitted in the present invention to have an L-shape.

Further, in the present invention, the bent portion 4, the first and second straight staircase portions 3,6
The wall 1A, 1B does not necessarily need to be unitized.
It may be directly attached to.

[Effect of device]

According to the present invention as described above, there is an effect that the productivity of the bent staircase can be improved.

Regarding the present invention, the Japan Patent Information Organization (Ja
pio) patent information database (PATOLIS)
Conditional expression [IPC (International Patent Classification) = EO4F11 / 10 + stairs] *
A search for prior applications by [FK (free keyword) = spiral + fold] found no structure equivalent to the present invention, and revealed the novelty of the present invention in this field.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment according to the present invention, FIG. 2 and FIG.
FIG. 4 is a sectional view taken along line II-II and line III-III in FIG. 1, respectively, and FIG. 4 is a perspective view showing a main part of the embodiment, and FIG.
The drawing is a sectional view taken along the line V-V in FIG. 1 …… Bend staircase, 1C …… Sleeve wall end as the center of bend, 2 …… Bend stairs, 10 …… Base, 12 …… Steel plate shaft, 12A …… Protrusions, 31-33 …… Step plates, 41, 42 ... Step plate bundles.

Claims (1)

[Scope of utility model registration request] 1. A stepped plate receiving shaft which is attached to a bending center portion of a bent staircase and is erected on a base, and spirally arranged so as to partially overlap with each other with the stepped plate receiving shaft as a bending center. A plurality of step plates, and a step plate bundle that is interposed between these step plates and receives the load of the step plate located above, and the step plate receiving shaft has a projection at the bottom, A bent staircase, characterized in that the lowermost step plate is supported on the projection, and the step plate bundle and the upper step plate are alternately arranged on the lowermost step plate.