JP3001645U - Spiral staircase building unit - Google Patents

Abstract

(57) [Summary] [Purpose] The spiral staircase is unitized to improve its construction efficiency. [Structure] At the center of a cylindrical outer frame 30 having a plurality of circular columns 33 as a peripheral wall, a cylindrical inner frame 40 having a plurality of circular columns 43 as a peripheral wall is arranged. Then, the plurality of beams 5 in which the outer frame 30 and the inner frame 40 are spirally arranged
Connect through 0. Both ends of the beam 50 are supported by the columns 33, 43.
Is fixed to the beam 50 through a joint 60, and a tread plate is sequentially fixed to the beam 50. Then, the unit structures 20 configured as described above are sequentially connected upward, and a spiral staircase is constructed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a spiral staircase construction unit in which the spiral staircase is unitized so that construction efficiency can be improved.

[0002]

[Prior art]

 In general, stairs are installed inside and outside the building and used as a passage connecting the upper and lower floors.

Among them, the spiral staircase is known to be able to realize a gentle gradient in a small space and to have an excellent appearance.

Conventionally, in the spiral staircase, as shown in FIG. 7, a plurality of treads 2, ... Are spirally attached around a column 1, and then a balustrade 3 is fixed to the tips of the treads 2 ,. It is built by setting up.

[0005]

[Problems to be solved by the device]

 However, the conventional spiral staircase has a drawback that it requires a long construction period because the installation site must be constructed from the beginning.

Further, since the load is concentrated on the pillar, there is a drawback in that there are many difficulties in construction, such as that the pillar must be buried underground sufficiently.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention has an inner frame arranged at the center of a cylindrical outer frame, and the outer frame and the inner frame are connected through a plurality of spirally arranged beams. The present invention provides a spiral staircase construction unit that includes a unit structure in which treads are sequentially fixed to the beam, and the unit structures can be sequentially connected upward.

Further, according to the present invention, the outer wall and the inner frame are provided with a plurality of columns at equal intervals on the peripheral walls of the inner frame, and both ends of each beam are fixed to both columns through a joint. It provides building units.

[0009]

[Action]

 According to the present invention, it is possible to construct a spiral staircase having a required height by transporting unit structures by a truck or the like and sequentially stacking and connecting the unit structures on site.

Therefore, the spiral staircase can be installed within an extremely short period of time, and the construction period and cost can be reduced.

The outer walls and the inner walls of the unit structure act like balustrades to prevent pedestrians from falling.

Further, the constructed spiral staircase comes to be supported by the outer frame and the inner frame, and high stability is obtained.

[0013]

【Example】

 Hereinafter, the construction unit of the spiral staircase according to the present invention will be described. FIG. 1 is a schematic front view showing an embodiment of the present invention. Reference numeral 10 in the drawing shows a spiral staircase as a finished product.

As shown in the figure, the spiral staircase 10 is composed of a plurality of unit structures 20, ..., The unit structures 20 are sequentially stacked upward, and disassembled by using a bolt or the like. Connected as possible.

FIG. 2 is a plan view showing the unit structure, in which reference numeral 30 denotes an outer frame and 40 denotes an inner frame.

As shown in the figure, the unit structure 20 includes an outer frame 30 having a cylindrical shape and an inner frame 40 arranged at the center of the outer frame 30.

The outer frame 30 is made of stainless steel or the like having high strength and excellent corrosion resistance, and by arranging the columnar columns 33, ... At equal intervals on the ring-shaped outer ring 31. It is configured.

For example, the outer ring 31 has an outer diameter of 2600 to 2800 mm and an inner diameter of 2400 to 2600 mm, and the support column 33 is a pipe having a diameter of about 50 mm and a total length of about 2000 mm, and is arranged at an interval of 10 to 30 degrees, preferably 18 degrees. It is arranged so that 20 of them will be installed.

Further, reference numerals r, ... In the drawings are bolt holes, and the upper and lower unit structures are connected by the bolt holes r ,.

On the other hand, the inner frame 40 is also made of stainless steel or the like like the outer frame 30, and by arranging the columnar columns 43, ... At equal intervals with respect to the ring-shaped inner ring 41. It is configured.

For example, the inner ring 41 has an outer diameter of 700 to 800 mm and an inner diameter of 500 to 600 mm, and the support column 43 is a pipe having a diameter of about 50 mm and a total length of about 2000 mm, like the support column 33 of the outer frame 30. Twenty lines are arranged at intervals of -30 degrees, preferably 18 degrees.

Further, bolt holes r, ... Are formed in the inner ring 41 so that the upper and lower unit structures can be firmly connected to both the outer ring 31 and the inner ring 41.

Next, as clearly shown in FIG. 3, the columns 33, ... Of the outer frame 30 have outer rings 31, 31 at both ends, and the columns 43, ... Of the inner frame 40 have inner rings at both ends. Peripheral walls of the outer frame 30 and the inner frame 40 are formed by a plurality of columns 33 and 43 fixed to 41 and 41, respectively, and arranged in a circular shape.

The outer frame 30 and the inner frame 40 are connected via a plurality of beams 50, ... Made of stainless steel pipes and the like.

The beams 50, ... Are pipes having a diameter of about 50 mm, and both ends thereof are fixed to both columns 33, 43 through joints 60.

The joint 60 is a T-shaped shaft joint, and the material thereof is an alloy of aluminum and magnesium.

By the way, according to FIG. 3, both ends of the support column 33 are fixed to the outer rings 31 and 31, and both ends of the support column 43 are fixed to the inner rings 41 and 41, respectively. It is preferable that the inner ring and the inner ring are additionally provided in the central portion of the column 43 because the strength against buckling can be further increased.

Next, as clearly shown in FIG. 4, each of the beams 50, ... Is erected between the columns 33, 43 facing each other in terms of radiation, and each of the beams 50 ,. They are arranged in a spiral shape by gradually increasing (lowering) in the circumferential direction.

Then, as shown by an imaginary line, a tread plate 70 made of stainless steel is sequentially fixed between the beams 50 ,.

The joint 60 is fixed to the columns 33 and 43 fitted in the main body 61 with bolts, and both ends of the beams 50, ... Which are fitted into the legs 62 are also fixed with bolts.

Next, FIG. 5 and FIG. 6 show a tread plate, FIG. 5 is a plan view thereof, and FIG. 6 is a sectional view showing a mounted state.

As is apparent from FIG. 5, the tread plate 70 has a fan-shaped tread surface 71, and one end 71 a and the bent portion 72 are formed with tapered bolt holes r ′ ,.

Then, the tread plate 70 is fixed to the beam 50 by means of flat head screws or the like inserted into the bolt holes r ′ ,.

On the other hand, as is apparent from FIG. 6, one end 71a of the tread 71 is bent at a right angle to form a vertical portion 73, and the other end 71b is bent to the side opposite to the vertical portion 73 and kicked. It is the upper surface 74.

Further, the upper end of the kicking surface 74 is bent in a U shape, and the bent portion 72 is the bent portion 72.

Then, the bent portion 72 is engaged with the upper beam 50, and the vertical portion 73 is installed so as to cover the bent portion 72 of another tread that is engaged with the lower beam 50. Placed.

In this way, the tread plate 70 is sequentially fixed to each of the beams 50, ... Thus forming a spiral passage.

According to the above-described embodiment, the peripheral walls of the outer frame 30 and the inner frame 40 are cylindrical fences composed of the columns 33 and 43, whereby the beam 50 connecting the outer frame 30 and the inner frame 40 is jointed. It is preferable because it can be easily fixed using 60, but its peripheral wall may be a shielding surface made of a stainless plate or the like.

Although the inner frame 40 has the same structure as the outer frame 30, it may be a cylindrical shaft, and in this case, flange type joints may be provided especially at both ends thereof. preferable.

By the way, since the unit structure 20 is entirely made of a material having excellent corrosion resistance such as stainless steel or aluminum-magnesium alloy, it is particularly useful for installation in an environment with strong erosion.

However, the unit structure 20 is not limited to one made of a material having excellent corrosion resistance, and may be made entirely of carbon steel, for example, or wood other than metal may be used.

[0042]

[Effect of device]

 The construction unit of the spiral staircase according to the present invention is configured as described above, and thus has the following effects.

(1) An inner frame is arranged at the center of a cylindrical outer frame, and the outer frame and the inner frame are connected to each other through a plurality of spirally arranged beams. It has a unit structure consisting of treads that are sequentially fixed, and the unit structures can be sequentially connected upwards, so that a spiral staircase can be constructed simply by assembling the unit structures at the installation location. As a result, there is an excellent effect that the construction period can be shortened.

(2) Further, by forming the peripheral walls of the outer frame and the inner frame with a plurality of columns, the erection of the beam supporting the tread can be performed by using a joint without requiring a troublesome work such as welding. It has an excellent effect that

(3) Further, according to the spiral staircase formed by connecting the unit structures, the entire structure is supported by the outer frame and the inner frame, so that an excellent effect that high stability can be obtained Play.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an embodiment of the present invention.

FIG. 2 is a plan view showing a unit structure.

FIG. 3 is a sectional view showing the unit structure.

FIG. 4 is a perspective view showing a mounting state of a beam used in the unit structure.

FIG. 5 is a plan view showing a tread used in the unit structure.

FIG. 6 is a sectional view showing a mounting state of the tread plate.

FIG. 7 is a schematic front view showing a conventional spiral staircase.

[Explanation of symbols]

 10 spiral staircase 20 unit structure 30 outer frame 31 outer ring 33 pillar 40 inner frame 41 inner ring 43 pillar 50 beam 60 joint 70 tread plate

Claims (2)

[Scope of utility model registration request] 1. An inner frame is arranged at the center of a cylindrical outer frame, and the outer frame and the inner frame are connected to each other through a plurality of spirally arranged beams. A spiral staircase construction unit that includes a unit structure in which treads are sequentially fixed, and the unit structures can be sequentially connected upward. 2. The spiral according to claim 1, wherein the outer frame and the inner frame have a plurality of support columns arranged at equal intervals on the peripheral wall of the outer frame, and both ends of each beam are fixed to both support columns via joints. Building unit for stairs.