Staircase system

Abstract

This method provides a simpler structure for supporting the landing compared to a system where beam and column members are provided separately to support the landing. [Solution] The staircase system comprises a landing provided in the middle of the stairs and a support member having boards arranged in a cross shape when viewed from above, with its upper end attached to the landing.

Description

Technical Field

[0001] This disclosure relates to a staircase system.

Background Art

[0002] The open staircase unit described in Patent Document 1 includes a dance floor base in which a beam portion is formed inside a square frame portion, a column that horizontally supports the dance floor base above the floor, a dance floor tread fixed to the upper surface of the dance floor base, a lower staircase member in which a plurality of treads are fixed to the beam body and the upper end portion is fixed to the dance floor base, and an upper staircase member in which a plurality of treads are fixed to the beam body and the lower end portion is fixed to the dance floor base. The upper end portion of the lower staircase member is fixed to the lower surface of the beam portion of the dance floor base.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] A dance floor may be provided in the middle of a staircase. In order to support this dance floor, a beam member and a column member are provided separately.

[0005] The problem of this disclosure is to support a dance floor with a simple configuration as compared with the case of separately providing a beam member and a column member to support the dance floor.

Means for Solving the Problems

[0006] The staircase system according to the first aspect includes a dance floor provided in the middle of a staircase, and a support member having plate materials assembled in a cross shape when viewed from above, and an upper end thereof is attached to the dance floor.

[0007] According to the above embodiment, the landing can be supported with a simpler configuration compared to the case where beam members and column members are provided separately to support the landing.

[0008] The staircase system according to the second embodiment is characterized in that, in the staircase system according to the first embodiment, the landing is rectangular in plan view, and the cross-shaped boards are arranged along the diagonals of the landing when viewed from above.

[0009] According to the above embodiment, when the landing is subjected to a load from the horizontal direction, the plate material functions as a horizontal brace, thereby suppressing deformation of the landing. In other words, the in-plane rigidity of the landing can be ensured.

[0010] The staircase system according to the third embodiment is characterized in that, in the staircase system according to the first or second embodiment, the support member is tapered from top to bottom.

[0011] According to the above embodiment, deformation of the landing when a load is applied to the end of the landing from above can be suppressed, and the weight of the support member can be reduced. [Effects of the Invention]

[0012] According to this disclosure, a landing can be supported with a simpler configuration compared to the case where beam members and column members are provided separately to support the landing. [Brief explanation of the drawing]

[0013] [Figure 1] This is a perspective view showing a staircase system according to an embodiment of the present disclosure. [Figure 2] This is a plan view showing a staircase system according to an embodiment of the present disclosure. [Figure 3] This is a drawing showing a support column and the like provided in a staircase system according to the embodiment of this disclosure, viewed from the horizontal direction. [Figure 4] This is a perspective view showing a support column provided in a staircase system according to an embodiment of the present disclosure. [Figure 5]Exploded perspective view showing a support column provided in a staircase system according to an embodiment of the present disclosure. [Figure 6] Drawing showing a support column provided in a staircase system according to an embodiment of the present disclosure and a bending moment diagram for the support column.

Mode for Carrying Out the Invention

[0014] An example of a staircase system according to an embodiment of the present disclosure will be described using FIGS. 1 to 6. The arrow H shown in each figure indicates the vertical direction in the up and down direction of the staircase system. The arrow W shown in each figure indicates the width direction of the staircase system, which is a horizontal direction orthogonal to the arrow H. The arrow D shown in each figure indicates the depth direction of the staircase system, which is a horizontal direction orthogonal to the arrows H and W.

[0015] (Staircase system 100) As shown in FIG. 1, the staircase system 100 includes an L-shaped staircase 10, a landing 30 provided in the middle of the L-shaped staircase 10, and a support column 50 that supports the landing 30 from below.

[0016] 〔Staircase 10〕 As shown in FIGS. 1 and 2, the staircase 10 is used to move between the lower floor 110 and the upper floor 120 of a building. One ascends the staircase from the lower floor 110 to the front side in the depth direction and then ascends to one side in the width direction (the right side in the figure) from the landing 30 in the middle to move from the lower floor 110 to the upper floor 120.

[0017] In the following description, the part of the staircase 10 connecting the lower floor 110 and the landing 30 is referred to as the lower staircase 12, and the part of the staircase 10 connecting the landing 30 and the upper floor 120 is referred to as the upper staircase 22.

[0018] -Lower staircase 12- The lower stage 12 includes a pair of slat plates 14a and 14b, and a plurality of treads 16 sandwiched between the pair of slat plates 14a and 14b. The slat plates 14a and 14b have the plate thickness direction as the width direction. The slat plate 14a is arranged on one side in the width direction (the right side in FIG. 2) with respect to the tread 16, and the slat plate 14b is arranged on the other side in the width direction (the left side in FIG. 2) with respect to the tread 16. Further, the tread 16 is rectangular in shape extending in the width direction when viewed from above, and the plurality of treads 16 are arranged in a stepped manner in the depth direction.

[0019] -Upper staircase 22- The upper staircase 22 includes a pair of slat plates 24a and 24b, and a plurality of treads 26 sandwiched between the pair of slat plates 24a and 24b. The slat plates 24a and 24b have the plate thickness direction as the depth direction. The slat plate 24a is arranged on the back side in the depth direction with respect to the tread 26, and the slat plate 24b is arranged on the front side in the depth direction with respect to the tread 26. And the end portion on the other side in the width direction of the slat plate 24a is connected to the end portion on the front side in the depth direction of the slat plate 14a.

[0020] Further, the tread 26 is rectangular in shape extending in the depth direction when viewed from above, and the plurality of treads 26 are arranged in a stepped manner in the width direction.

[0021] 〔Dance floor 30 and others〕 As shown in FIGS. 1 and 2, the dance floor 30 is arranged to connect the lower staircase 12 and the upper staircase 22, and is rectangular in shape when viewed from above (in plan view).

[0022] A side plate 32a is arranged at the edge on the other side in the width direction of the dance floor 30, and a side plate 32b is arranged at the edge on the front side in the depth direction of the dance floor 30. Further, a support plate 36a is arranged at the edge on one side in the width direction of the dance floor 30, and a support plate 36b is arranged at the edge on the back side in the depth direction of the dance floor 30.

[0023] -Dance floor 30- The landing 30 has its thickness in the vertical direction and is positioned on the front side in the depth direction relative to the uppermost tread 16 of the lower staircase 12, and on the other side in the width direction relative to the lowermost tread 26 of the upper staircase 22.

[0024] -Side plate 32a, side plate 32b- The side plate 32a is attached to the side of the landing 30 from the side, at the other edge in the width direction of the landing 30. The side plate 32a has a rectangular shape with its thickness direction as the width direction and extending in the depth direction when viewed from the width direction. A portion of the side plate 32a protrudes upward from the top surface of the landing 30. Furthermore, the rear end of the side plate 32a in the depth direction is connected to the front end of the stringer board 14b in the depth direction by a connecting part 40a.

[0025] The side plate 32b is attached to the side of the landing 30 from the side, at the front edge in the depth direction of the landing 30. The side plate 32b has a rectangular shape, with its thickness direction being the depth direction and extending in the width direction when viewed from the depth direction. A portion of the side plate 32b protrudes upward from the top surface of the landing 30. Furthermore, the other end of the side plate 32b in the width direction is connected to the front end of the side plate 32a in the depth direction by a connecting part 40b. Also, one end of the side plate 32b in the width direction is connected to the other end of the stringer board 24b in the width direction by a connecting part 40c.

[0026] -Support plate 36a, support plate 36b- The support plate 36a is attached to the underside of the landing 30 so as to support one edge of the landing 30 in the width direction from below. The support plate 36a has a rectangular shape with the thickness direction being the width direction and extending in the depth direction when viewed from the width direction. Furthermore, the front end of the support plate 36a in the depth direction is connected to the stringer board 24b and the side plate 32b by a connecting part 40c, and the rear end of the support plate 36a in the depth direction is connected to the stringer board 14a and the stringer board 24a by a connecting part 40d.

[0027] The support plate 36b is attached to the underside of the landing 30 so as to support the rear edge of the landing 30 in the depth direction from below. The support plate 36b has a rectangular shape with its thickness direction being the depth direction and extending in the width direction when viewed from the depth direction. Furthermore, one end of the support plate 36b in the width direction is connected to the stringer board 14a, stringer board 24a and the support plate 36b by a connecting part 40d, and the other end of the support plate 36b in the width direction is connected to the stringer board 14b and the side plate 32a by a connecting part 40a.

[0028] [Support pillar 50] As shown in Figure 2, the support column 50, when viewed from above, comprises cross-shaped plate members 52 and 62 and a base plate 72 (see Figure 4). The upper end surface of plate member 52 is positioned so as to align with one diagonal of the landing 30 when viewed from above (in plan view), and the upper end surface of plate member 62 is positioned so as to align with the other diagonal of the landing 30 when viewed from above (in plan view). In other words, the plate members 52 and 62 are positioned so as to align with the diagonals of the landing 30 when viewed from above. Furthermore, as shown in Figures 3 and 4, the support column 50 tapers from top to bottom. The support column 50 is an example of a support member.

[0029] -Plate material 52- As shown in Figure 2, the plate 52 is positioned to straddle the connecting section 40a and the connecting section 40c when viewed from above, and in addition to supporting the vertical load of the landing 30, it also functions as a horizontal brace.

[0030] Furthermore, as shown in Figures 3 and 4, the plate material 52 is symmetrical with respect to the center line CL01, which passes through the center of the landing 30 and extends vertically. In addition, the plate material 52 tapers from top to bottom. Specifically, the outer edge of the plate material 52 (the edge that is horizontally away from the center line CL01) is curved when viewed from the thickness direction of the plate material 52, so that the plate material 52 tapers from top to bottom.

[0031] Furthermore, as shown in Figure 3, one end of the upper edge of the plate material 52 is connected to the side plate 32a, the support plate 36b (see Figure 2), and the landing 30 via a bracket (reference numeral omitted) at a connecting portion 40a. In addition, the other end of the upper edge of the plate material 52 is connected to the side plate 32b, the support plate 36a (see Figure 2), and the landing 30 via a bracket (reference numeral omitted) at a connecting portion 40c.

[0032] -Plate material 62- As shown in Figure 2, the plate 62 is positioned to straddle the connecting section 40b and the connecting section 40d when viewed from above, and in addition to supporting the vertical load of the landing 30, it also functions as a horizontal brace.

[0033] Furthermore, as shown in Figures 3 and 4, the plate material 62 is symmetrical with respect to the center line CL01, which passes through the center of the landing 30 and extends in the vertical direction. Specifically, as shown in Figures 4 and 5, the plate material 62 is formed from a plate portion 62a on one side and a plate portion 62b on the other side, sandwiching the plate material 52. The plate portions 62a and 62b are attached to the plate surface of the plate material 52.

[0034] Furthermore, the plate material 62 tapers from top to bottom. Specifically, the outer edge of the plate material 62 (the edge horizontally away from the center line CL01) is curved when viewed from the thickness direction of the plate material 62, so that the plate material 62 tapers from top to bottom.

[0035] As a result, the support column 50, which is composed of plate material 62 and plate material 52, tapers from top to bottom. Specifically, the support column 50 tapers from top to bottom because the outer edges of plate material 62 and plate material 52 are curved.

[0036] Furthermore, one end of the upper edge of the plate 62 is connected to the side plate 32a, the side plate 32b and the landing 30 via a bracket (not shown) at a connecting portion 40b. Furthermore, the other end of the upper edge of the plate 62 is connected to the support plate 36b, the support plate 36b and the landing 30 via a bracket (not shown) at a connecting portion 40d.

[0037] -Base Plate 72- As shown in Figures 4 and 5, the base plate 72 is attached to the lower ends of the plate materials 52 and 62. The base plate 72 has a rectangular shape when viewed from above, with the plate thickness direction being the vertical direction. Mounting holes 72a that penetrate in the vertical direction are formed at each of the four corners of the base plate 72.

[0038] As shown in Figure 3, a base plate 136 is attached to the upper end of a protruding member 132 that projects upward from the floor slab 130. The base plate 72 is placed on the base plate 136 and attached to the base plate 136 using bolts and nuts (not shown). Furthermore, a floating floor 140 is provided above the floor slab 130, separated from the floor slab 130. The lower end of the support column 50 is inserted into a through hole 140a formed in the floating floor 140. As a result, the base plate 72 is not visible from the outside.

[0039] (action) Next, we will explain the operation of the staircase system 100. The support column 50 tapers from top to bottom. In other words, the vertical thickness of the support column 50 gradually increases from the end towards the center, as shown in Figure 6. Here, since the support column 50 and the stairs are connected by connecting parts 40a to 40d, Figure 6 shows the bending moment diagram when a load P is applied from above to the end of the landing 30. As can be seen from this bending moment diagram, the moment load increases from the end towards the center. On the other hand, as mentioned above, the vertical thickness of the support column 50 gradually increases from the end towards the center.

[0040] In other words, considering the case where a load is applied from above (vertically) to the end of the landing 30, the support column 50, whose thickness in the vertical direction gradually increases from the end towards the center, has a rational shape that matches the stress state.

[0041] Furthermore, considering the case where the landing 30 is subjected to a load from the horizontal direction, the deformation of the landing 30 is suppressed by arranging the plates 52 and 62 so as to be aligned with the diagonals of the landing 30 when viewed from above. In other words, by arranging the plates 52 and 62 so as to be aligned with the diagonals of the landing 30 when viewed from above, the plates 52 and 62 function as horizontal braces, and the in-plane rigidity of the landing 30 is ensured.

[0042] (summary) As explained above, in the staircase system 100, the landing 30 is supported from below by support columns 50 made by combining plate members 52 and 62. This allows the landing 30 to be supported with a simpler configuration compared to the case where beam members and column members are provided separately to support the landing.

[0043] Furthermore, in the staircase system 100, considering the case where a load is applied from above (vertically) to the end of the landing 30, the support column 50, whose thickness in the vertical direction gradually increases from the end towards the center, has a rational shape that matches the stress state. In other words, in the staircase system 100, deformation of the landing 30 is suppressed when a load is applied from above to the end of the landing 30, while also allowing for a reduction in the weight of the support column 50.

[0044] Furthermore, in the staircase system 100, the support columns 50 are tapered from top to bottom by curving the outer edges of the plate material 52 and the outer edges of the plate material 62. This improves the aesthetic appearance compared to cases where the outer edges are straight.

[0045] Although this disclosure has been described in detail with respect to specific embodiments, it will be apparent to those skilled in the art that this disclosure is not limited to these embodiments, and that various other embodiments are possible within the scope of this disclosure. For example, in the above embodiment, a landing 30 and a support column 50 are provided in the middle of an L-shaped staircase 10, but the landing and support column of this application may be provided in the middle of a U-shaped staircase, or in the middle of any staircase.

[0046] Furthermore, in the above embodiment, the landing 30 is rectangular in shape, and the cross-shaped boards 52 and 62 are arranged along the diagonals of the landing 30 when viewed from above. However, the cross-shaped boards do not necessarily have to be arranged along the diagonals of the landing. In this case, the effect achieved by arranging the cross-shaped boards along the diagonals of the landing will not be achieved.

[0047] Furthermore, although the plate materials 52 and 62 were curved in the above embodiment, they may also be straight or bends made up of multiple straight lines, and various shapes are possible while taking design considerations into account. [Explanation of Symbols]

[0048] 10 stairs 30 Landing 50 Support column (an example of a support member) 52 Board material 62 Board material 100 Stair System CL01 center line

Claims

1. A landing located in the middle of the stairs, A support member having boards arranged in a cross shape when viewed from above, with its upper end attached to the landing, A staircase system equipped with [a specific feature / feature].

2. The aforementioned landing is rectangular in shape when viewed from above. The cross-shaped board is positioned so as viewed from above, along the diagonal of the landing. The staircase system according to claim 1.

3. The support member is tapered from top to bottom. The staircase system according to claim 2.

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