JP3916963B2 - spiral staircase - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a spiral staircase provided in a residential building.
[0002]
[Prior art]
Generally, a spiral staircase is provided in an atrium space such as a living room in a residential building.
[0003]
In this case, the spiral staircase is a see-through type that eliminates the kick plate and improves the line of sight.
[0004]
Conventionally, as such a spiral staircase, an assembly-type one in which a step plate is fixed to a column for each step and then a handrail is fixed to the step plate (for example, JP-A-2000-2000). No. 213134 and JP-A 2000-120246), and an on-site welding type that is completed on the site by welding a column plate and a handrail to a column is known.
[0005]
[Problems to be solved by the invention]
However, in the case of the above conventional assembly type spiral staircase, the number of assembly parts increases, which causes inconvenience that the construction becomes troublesome. Moreover, when the number of assembly parts increases, the number of bolts exposed to the assembly site increases, resulting in inconvenience that it cannot be finished beautifully in appearance.
[0006]
On the other hand, in the case of the on-site welding type spiral staircase, the finish varies depending on the on-site welding accuracy. In addition, if the handrail is welded to the frame during the installation of the pillar, there is a hindrance to the subsequent carpenter work or cross work, and conversely, if the handrail is welded during the interior work, the wooden parts such as flooring may be ignited. There is concern about sex.
[0007]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a spiral staircase that can be accurately and beautifully finished without hindering other construction work.
[0008]
[Means for Solving the Problems]
The spiral staircase of the present invention for solving the above problems is composed of a support column, a step plate, and a handrail, and the support column is formed by welding and fixing a step plate supporting steel plate in a spiral shape around its axial direction. The corrugated board is screwed from the corrugated board supporting steel plate side in a state of being placed on each corrugated steel sheet, and the handrail is connected by receiving and connecting a plurality of handrail members divided every several stages. By doing so, it becomes a spiral that stands up from the outer peripheral edge of the step plate fixed to the step plate supporting steel plate, and each handrail member has a stepped contact surface that contacts the surface of each step plate The projection surface is formed by projecting from the contact surface, and the projection surface is inserted into the fixing hole drilled in the step plate so that the contact surface contacts the step plate. Screws are fixed to the corrugated plate from above, and bolts are fixed to the protrusions from the corrugated plate supporting steel plate side.
[0009]
According to this structure, it can be stopped in the state where the column is constructed during the construction work, and the handrail can be constructed after the interior construction work.
[0010]
Moreover, since the support | pillar is already comprised by welding and fixing the corrugated board support steel plate, even if it installs a corrugated board and a handrail on the spot, it will be able to construct with high precision.
[0011]
Furthermore, since the corrugated plate supporting steel plate is welded and fixed to the support column, the corrugated plate can be assembled to the extent that it is screwed to the corrugated plate supporting steel plate, and the handrail is handrailed from the side of each corrugated plate supporting steel plate. Except for fixing the bolt to the member, it can be constructed by screw fixing.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
1 and 2 show an outline of the overall configuration of the spiral staircase 1, and FIGS. 3 to 6 show each member of the spiral staircase 1.
[0014]
That is, the spiral staircase 1 is composed of a support column 2, a step plate 3, and a handrail 4.
[0015]
As shown in FIG. 3, the support column 2 is configured by welding and fixing corrugated plate supporting steel plates 22 and 23 in a spiral shape along the axial direction of the support column main body 21.
[0016]
The column main body 21 is made of a cylindrical steel pipe, and a flange portion 21a is provided at the lower end portion thereof, and a decorative lid member 21b and a handrail joining plate 21c are provided at the upper end portion thereof.
[0017]
As shown in FIGS. 3 and 4, the corrugated plate supporting steel plate 22 has a shape in which a steel disc having a radius of about 800 mm is cut at a central angle of about 26 degrees and a notch 20 corresponding to the column main body 21 is provided at the center. In one side portion corresponding to the kicking along the radial direction, a kicking portion 24 projecting upward at a height of about 60 mm is formed. Further, the corrugated plate supporting steel plate 22 is provided with screw holes 25 at five locations in total, and a bolt hole 26 is provided at one location near the kick-in at the handrail mounting position A in the outer peripheral portion. . A reinforcing plate 27 is provided on the bottom surface of the corrugated plate supporting steel plate 22 at a central position along the diameter direction so as to have a substantially T-shaped cross section.
[0018]
Further, the corrugated plate supporting steel plate 23 provided in the uppermost landing is formed in a substantially trapezoidal shape with a corner being a central angle of about 77 degrees, and a notch 20 corresponding to the column main body 21 is formed in this corner. In addition, reinforcing ribs 28 projecting toward the bottom at a height of about 120 to 50 mm are formed at portions corresponding to the oblique side and the upper side. The corrugated plate supporting steel plate 23 is provided with screw holes 25 at nine locations in total, and the handrail mounting position A on the corrugated plate supporting steel plate 23 along the reinforcing rib 28 has an appropriate interval. Bolt holes 26 are provided at three locations. Reinforcing plates 27 are provided on the bottom surface of the step plate supporting steel plate 23 at a diagonal line from the notch 20 and a portion corresponding to the lower side so as to be orthogonal to the step plate supporting steel plate 23. In addition, a fixing piece 29 having a U-shaped cross section for fixing the support column 2 extends from the side facing the oblique side to the beam 50 supporting the second floor 5 so as to be parallel to the upper side and the lower side. It is installed.
[0019]
The welding of each part of the support column 2 is performed by positioning with a jig in a factory so as not to cause an accuracy error.
[0020]
As shown in FIG. 5, the corrugated board 3 is constituted by a decorative plywood having a thickness of about 30 mm and formed in a shape substantially matching the corrugated board supporting steel plates 22 and 23. The step plate 3 is sized to protrude about 5 mm from the side corresponding to the nose of the step plate supporting steel plate 22 in a state of being attached to the step plate supporting steel plates 22 and 23. Further, in this attached state, a through hole 30 is drilled in the step plate 3 at a position that matches the bolt hole 26 at the handrail attachment position A of the step plate supporting steel plates 22 and 23 described above.
[0021]
As shown in FIGS. 1, 2, and 6, the handrail 4 is a flat plate that is brought into contact with each handrail attachment position A in a state in which the step plate 3 is attached on the step plate supporting steel plates 22 and 23. The contact member 41 thus formed, a vertical lattice 42 standing on the contact member 41 at equal intervals, and a handrail body 43 provided on the vertical lattice 42 are fixed by welding. .
[0022]
A portion corresponding to the through hole 30 of the step plate 3 of the contact member 41 has a vertical lattice 42 extending from the contact member 41 to form a protruding portion 44. The projecting portion 44 enters the through-hole 30 in a state of being in contact with the sliding attachment position A, whereby the handrail 4 can be positioned on the step plate 3. Each contact member 41 is provided with screw holes 45 (see FIG. 9) with appropriate intervals. Further, the lowermost vertical lattice 42 of the handrail 4 extends downward from the contact member 41 to form a leg portion 46, and the leg portion 46 abuts and is fixed to the first floor surface 6. A flange portion 46a is formed.
[0023]
The handrail 4 is composed of four parts: a lower handrail member 4a, an intermediate handrail member 4b, an upper handrail member 4c, and a landing handrail member 4d. Among these, as shown in FIG. 7, a receiving member 47 is welded and fixed in the upper end portion of the handrail body 43 between the intermediate handrail member 4b and the lower handrail member 4a, and the intermediate handrail member 4b and An insertion member 48 is welded and fixed in the lower end portion of the handrail main body 43 with the upper end handrail member 4c, and the receiving member 47 and the insertion member 48 can receive and connect each other. . The receiving member 47 is configured by providing a screw hole 47b at a substantially central portion of the short tube 47a. The insertion member 48 is fixed and integrated so that a rod 48b provided in the short tube 48a protrudes from the short tube 48a, and a portion of the protruding rod 48b is inserted into the short tube 47a of the member 47. In this state, the groove portion 48c is provided at a position corresponding to the screw hole 47b of the receiving member 47 in a state where it is received and inserted.
[0024]
In the state where the receiving member 47 is welded and fixed in the handrail main body 43, the screw head of the screw 49 provided in the screw hole 47b is positioned at the position of the handrail main body 43 that matches the screw hole 47b of the receiving member 47. A hole 43a for hiding 49a is provided.
[0025]
Further, a lid member 43b for closing the end portion of the handrail main body 43 is welded and fixed to the end portions of the handrail members 4a, 4b, 4c, and 4d where the receiving member 47 and the insertion member 48 are not provided. Yes. Further, a joining plate 40 is provided at one end portion of the handrail body 43 of the landing handrail member 4d to join the handrail joining plate 21c of the column body 21 with a bolt.
[0026]
The welding of each part of the handrail 4 is also performed by positioning with a jig in the factory so as not to cause an accuracy error.
[0027]
Next, the construction method of the spiral staircase 1 configured as described above will be described.
[0028]
First, the strut 2 is constructed at the time of construction of a residential building. As shown in FIG. 1, the column 2 is constructed by providing an anchor fitting 72 on the soil concrete 71 of the foundation 7, placing the flange portion 21 a of the column 2 on the anchor fitting 72, and fixing the column 2. The piece 29 is fixed to the beam 50 supporting the second floor with bolts 51. At this time, the height of the support column 2 is adjusted by the anchor fitting 72. The flange portion 21a and the anchor fitting 72, which are the lower end portions of the support column 2, are fixed by winding with concrete.
[0029]
Then, after shifting to the interior construction of a residential building, the mounting work of the corrugated board 3 is performed. As shown in FIGS. 8A and 8B, the step plate 3 is attached on the step plate supporting steel plates 22 and 23 of the support column 2 with an elastic sheet material 31 and an adhesive 32 having a thickness of about 1 mm. 8 (c) and 8 (d), the step plate 3 is placed and the screws 8 are screwed into the step plate 3 from the screw holes 25 on the bottom surfaces of the step plate supporting steel plates 22 and 23. Is done by.
[0030]
Then, after finishing work such as crossing in each living room of the residential building, the handrail 4 is attached.
[0031]
As shown in FIG. 9A, the handrail 4 is attached through the protruding portions 44 protruding from the abutting members 41 of the handrail members 4a, 4b, 4c, and 4d as shown in FIG. The contact member 41 is inserted into the hole 30 and provided at the handrail mounting position A of each step plate 3, and the screw 8 is screwed into the step plate 3 from the screw hole 45 on the surface of each contact member 41. Fix it. Further, the bolt 9 is screwed into the projecting portion 44 from the bottom surface of the bolt hole 26 of each of the corrugated plate supporting steel plates 22 and 23, so that the corrugated plate between the corrugated plate supporting steel plates 22 and 23 and the contact member 41. 3 and the handrail members 4a, 4b, 4c and 4d are fixed on the corrugated plate supporting steel plates 22 and 23, respectively.
[0032]
Further, the lower handrail member 4a, the intermediate handrail member 4b, and the upper handrail member 4c are, as shown in FIG. 9B, a receiving member 47 provided at the end of the handrail main body 43. And the insertion member 48 are connected by receiving and connecting, and a screw 49 is screwed through the hole 43a at the end of the handrail body 43 to fix the receiving member 47 and the insertion member 48.
[0033]
As shown in FIG. 9 (c), the landing railing member 4 d is constructed by superimposing the joining plate 40 on the handrail joining plate 21 c of the pillar body 21 and screwing them together with bolts 9 and nuts 90. 2 is joined.
[0034]
As shown in FIG. 9 (d), the leg 46 at the lowermost part of the handrail 4 is fixed to the first floor surface 6 with screws 61. Further, the periphery of the column main body 21 on the first floor surface 6 is finished by providing a parting material 62 and fixing with a screw 61.
[0035]
According to the spiral staircase 1 configured in this way, the column 2 is stopped in the construction work, the corrugated board 3 is constructed after the interior work, and the handrail is applied after the finishing work such as crossing. Therefore, it is possible to prevent other construction work from being hindered.
[0036]
In addition, the pillar 2 and the handrail members 4a, 4b, 4c, and 4d constituting the handrail are constructed by welding and fixing using a jig in the factory, so that the construction can be performed with high accuracy. Moreover, since it can assemble by fixing the handrail members 4a, 4b, 4c, and 4d with the bolts 9 as a whole except that the handrail members 4a, 4b, 4c, and 4d are fixed with the screws 9, the number of the bolts 9 used is reduced and beautiful. Can be finished.
[0037]
It should be noted that the screws 8 used in the screw holes 25 of the step plate supporting steel plates 22 and 23 of the support column 2 and the screw holes 45 of the abutting member 41 of the handrail 4 are supported so as not to stand out in the finished state. Colored ones similar to the steel plates 22 and 23 and the contact member 41 are used. Moreover, it is preferable to use the screw holes 25 and 45 that have a recessed peripheral edge in accordance with the shape of the screw head so that the screw head of the screw 8 is accommodated.
[0038]
Regarding the bolt 9 used for the bolt hole 26 of the corrugated plate supporting steel plates 22 and 23, and the bolt 9 and the nut 90 used for joining the joining plate 40 of the landing handrail member 4d and the handrail joining plate 21c of the column body 21, It is preferable to use those colored like the corrugated plate supporting steel plates 22 and 23 and the landing railing member 4d.
[0039]
【The invention's effect】
As described above, according to the present invention, it is possible to hold the column in the construction state during the construction work and to construct the handrail after the interior construction work, which hinders other construction work. Can be prevented.
[0040]
Moreover, since it constructs by attaching a corrugated board and a handrail to the support | pillar already comprised by welding and fixing the corrugated board support steel plate, it will be able to construct with high precision.
[0041]
Furthermore, since the whole can be assembled by screw fixing except for bolt fixing to the handrail member from the side of each corrugated plate supporting steel plate, the number of bolts used can be reduced to achieve a beautiful finish.
[Brief description of the drawings]
FIG. 1 is a partially omitted side view showing an outline of the overall configuration of a spiral staircase according to the present invention.
FIG. 2 is a partially omitted plan view showing an outline of the overall configuration of a spiral staircase according to the present invention.
FIG. 3 is a side view showing a column of a spiral staircase according to the present invention.
FIGS. 4A to 4C are a plan view, a side view, and a front view of a corrugated plate supporting steel plate constituting a spiral stair column according to the present invention, and FIG. 4D to FIG. It is the top view, side view, and front view of the corrugated board support steel plate for landings.
5 (a) and (b) are a plan view and a side view showing a spiral staircase plate according to the present invention, and (c) and (d) are a plan view and a side view showing a step plate for the landing. It is.
6A to 6D are plan views of handrail members constituting the handrail of the spiral staircase according to the present invention, and FIGS. 6E to H are side views of the handrail members. .
FIG. 7 is a partial cutaway view showing a receiving and connecting state of each handrail member constituting the handrail of the spiral staircase according to the present invention.
FIGS. 8A and 8B are plan views for explaining the construction state of the corrugated plate supporting steel plate when corrugated plate is constructed, and FIGS. 8C and 9D are diagrams of the corrugated plate to the corrugated plate supporting steel plate. It is a front view explaining a fixed state.
FIGS. 9A to 9D are partial perspective views illustrating a construction state of each part of the handrail when handrails are constructed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Spiral staircase 2 Support | pillar 22 Corrugated board support steel plate 23 Corrugated board support steel plate 3 Corrugated board 30 Through-hole 4 Handrail 4a Lower end handrail member 4b Middle handrail member 4c Upper end handrail member 4d Landing place handrail member 4d Landing place 41 Abutting member 44 Protruding portion 47 Receiving member 48 Inserting member 8 Screw 9 Bolt

Claims (1)

It consists of struts, corrugated boards, and handrails,
The strut is formed by welding and fixing a corrugated plate support steel plate around its axial direction,
The corrugated plate is screw-fixed from the corrugated plate supporting steel plate side in a state of being placed on each corrugated plate supporting steel plate,
The handrail is formed in a spiral shape standing from the outer peripheral edge portion of the corrugated plate fixed to the corrugated plate supporting steel plate by connecting a plurality of handrail members divided every several steps by receiving and connecting. ,
Each handrail member has a stepped contact surface that is in contact with the surface of each step plate, and a protrusion projecting from the contact surface. With the protruding part inserted, the abutting surface is in contact with the step plate, and the screw is fixed to the step plate from above the abutting surface, and the bolt is fixed to the protruding part from the step plate supporting steel plate side. A spiral staircase characterized by that.

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