JP2018168647A - Staircase structure - Google Patents

Staircase structure Download PDF

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JP2018168647A
JP2018168647A JP2017068685A JP2017068685A JP2018168647A JP 2018168647 A JP2018168647 A JP 2018168647A JP 2017068685 A JP2017068685 A JP 2017068685A JP 2017068685 A JP2017068685 A JP 2017068685A JP 2018168647 A JP2018168647 A JP 2018168647A
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tread
base material
staircase
staircase structure
plate
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JP6999285B2 (en
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矢島 浩之
Hiroyuki Yajima
浩之 矢島
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Daiwa House Industry Co Ltd
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Daiwa House Industry Co Ltd
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Abstract

To provide a staircase structure which can reduce weight with a simple structure, can be easily constructed, can be easily dismantled, and can be easily separated when dismantled.SOLUTION: A staircase structure 1 includes a staircase body 4 having a pair of stringers 2 and 2 and a plurality of step parts 3, 3... suspended between the pair of stringers 2 and 2, and step boards 5 mounted on each of the step parts 3. The step boards 5 are mounted on the step parts 3 so as to be freely attached/detached to/from the staircase body 4. The step board 5 includes a substrate material 6 formed from a resin material or an inorganic material and a finishing material 7 which is stacked on the substrate material 6 on the step surface side rather than the substrate material 6 and is formed from a material different from the substrate material 6. Preferably, the substrate material 6 and the finishing material 7 are overlapped to each other in a mutually non-restriction state, the substrate material 6 is formed by stacking a plurality of plate materials 6a, 6a..., and the plurality of plate materials 6a, 6a... are overlapped to each other in a mutually non-restriction state.SELECTED DRAWING: Figure 2

Description

本発明は、複数の踏み部が一対の側桁の間にわたされた階段本体と、階段本体の各踏み部に配置された踏み板と、を備えた階段構造に関する。   The present invention relates to a staircase structure including a staircase body in which a plurality of stepping portions are passed between a pair of side girders, and a step board disposed at each stepping portion of the staircase body.

従来、この種の階段構造として、たとえば、特許文献1には、一対の側桁と、一対の側桁の間にわたされた複数の踏み部と、を備えた階段本体と、各踏み部に配置された踏み板とを備えた階段構造が提案されている。階段本体には、踏み板を収容する収容凹部が形成されており、踏み板は、収容凹部に所定の厚さまでモルタルを打設することにより形成されたモルタル板からなる(例えば、特許文献1参照)。   Conventionally, as this kind of staircase structure, for example, Patent Document 1 discloses a staircase body provided with a pair of side girders and a plurality of stepped portions passed between the pair of side girders, and each stepped portion. A staircase structure with a tread board arranged has been proposed. The staircase main body is formed with a housing recess for housing the tread board, and the tread board is made of a mortar board formed by placing mortar up to a predetermined thickness in the housing recess (see, for example, Patent Document 1).

特開2014−201949号公報JP 2014-201949 A

ところで、特許文献1に示す階段構造では、踏み板を設ける際には、階段本体の収容凹部にモルタルを打設した後、1つ1つの踏み板の踏み面を左官仕上げにより仕上げられるため、作業の手間が大きい。また、左官仕上げ後、モルタルが乾燥するまでの養生期間中は、階段を通行することができない。   By the way, in the staircase structure shown in patent document 1, when providing a tread board, after putting mortar in the accommodation recessed part of a staircase main body, the tread surface of each tread board is finished by plastering, and work is troublesome. Is big. In addition, during the curing period until the mortar dries after finishing the plastering, you cannot pass through the stairs.

また、階段の踏み板は、モルタル板からなるため、他の材料に比べてその重量が大きく、階段を撤去する際には、階段本体から、踏み板であるモルタル板を除去するのに、多大な時間がかかってしまう。   In addition, because the stair tread is made of mortar board, it is heavier than other materials, and when removing the stair, it takes a lot of time to remove the mortar board that is the tread board from the stair body. It will take.

本発明は、このような問題に鑑みてなされたものであって、その目的とするところは、簡単な構成で軽量化でき、容易に施工できるとともに、容易に解体することができる階段構造を提供することにある。   The present invention has been made in view of such a problem, and an object of the present invention is to provide a staircase structure that can be reduced in weight with a simple configuration, can be easily constructed, and can be easily disassembled. There is to do.

前記目的を達成すべく、本発明に係る階段構造は、一対の側桁と、前記一対の側桁の間にわたされた複数の踏み部と、を有した階段本体と、前記各踏み部に載置された踏み板と、を備えた階段構造であって、前記踏み板は、前記階段本体に対して取付け取外し自在に、前記踏み部に載置されるものであり、樹脂材料または無機材料からなる下地材と、前記下地材の上に積層され、前記下地材とは異なる材料からなる仕上げ材と、を備えることを特徴とする。   In order to achieve the above object, a staircase structure according to the present invention includes a staircase body having a pair of side girders and a plurality of stepped portions passed between the pair of side girders, and each stepped portion. A step structure including a step plate, the step plate being mounted on the step portion so as to be freely attached to and detached from the step body, and made of a resin material or an inorganic material. It is characterized by comprising a base material and a finishing material laminated on the base material and made of a material different from the base material.

本発明に係る階段構造によれば、踏み板は、階段本体に対して取付け取外し自在に、踏み部に載置されるものであることから、踏み板を階段本体の踏み部に簡単に載置するとともに、踏み部から踏み板を取り除くことができる。このため、モルタルにより踏み板を成形した場合に比べて、階段の施工および解体を容易に行うことができる。また、下地材を構成する樹脂材料または無機材料は、モルタルに比べて軽量であるばかりでなく、合板、無垢材などの木質系材料等に比べて湿気より膨潤し難い。このため、下地材の反りに伴う踏み板の反りを低減することができる。これにより、階段本体の踏み部から、踏み板が浮き上がることを防止することができる。   According to the staircase structure of the present invention, the tread board is placed on the tread part so that it can be attached to and detached from the stair body, and thus the tread board can be easily placed on the tread part of the stair body. The tread board can be removed from the tread. For this reason, compared with the case where a tread board is shape | molded with mortar, construction and dismantling of stairs can be performed easily. In addition, the resin material or inorganic material constituting the base material is not only lighter than mortar, but also less likely to swell due to moisture than woody materials such as plywood and solid wood. For this reason, the curvature of the footboard accompanying the curvature of a base material can be reduced. Thereby, it is possible to prevent the tread board from being lifted from the step portion of the stairs main body.

また、従来のように、踏み板を形成する際に、階段本体にモルタル等を打設する必要がなく、下地材と仕上げ材とを備えた踏み板を踏み部に載置するだけで、踏み板を形成することができる。このため、乾式で施工でき、解体時には階段本体から踏み板を容易に分別することができるので、リサイクル作業が容易となる。   In addition, when forming the tread board as in the past, it is not necessary to place mortar etc. on the staircase body, and the tread board is formed simply by placing the tread board with the base material and finishing material on the tread part. can do. For this reason, it can be constructed by a dry method, and the tread board can be easily separated from the main body of the stairs at the time of dismantling, so that the recycling work is facilitated.

ここで、踏み板を構成する下地材と仕上げ材は、接着されていてもよく、ビス止めされていてもよいが、より好ましい態様としては、前記下地材と、前記仕上げ材とは、相互に非拘束状態で重なっている。   Here, the base material and the finishing material constituting the tread may be bonded or screwed, but as a more preferable aspect, the base material and the finishing material are not mutually Overlapping in restraint state.

このように構成された階段構造では、下地材と、仕上げ材とは、相互に非拘束状態で重なっているので、メンテナンス時に、下地材および仕上げ材を簡単に交換することができる。下地材と仕上げ材とを容易に分離することが可能であるため、これらのリサイクル性を高めることができる。下地材と仕上げ材とが異種の材料からなるため、湿度変化および温度変化により、これらの伸縮量は異なるが、この態様によれば、下地材と仕上げ材とは、相互に非拘束状態で重なっているため、これらは独立して伸縮することができ、下地材と仕上げ材との伸縮量の差に起因した、踏み板の反りを抑えることができる。   In the staircase structure configured as described above, the base material and the finishing material overlap with each other in an unconstrained state, so that the base material and the finishing material can be easily exchanged during maintenance. Since it is possible to easily separate the base material and the finishing material, the recyclability of these can be improved. Since the base material and the finishing material are made of different materials, the amount of expansion / contraction differs depending on the change in humidity and temperature, but according to this aspect, the base material and the finishing material overlap with each other in an unconstrained state. Therefore, they can be expanded and contracted independently, and the warping of the tread due to the difference in expansion and contraction between the base material and the finishing material can be suppressed.

ここで、下地材は、1枚の板材からなってもよく、相互に固定または接着された複数の板材からなってもよいが、好ましい態様としては、前記下地材は、複数の板材が積層されたものであり、前記複数の板材同士は、相互に非拘束状態で重なっている。この態様によれば、下地材である複数の板材同士が、相互に非拘束状態で積層されているので、踏み面から発生する音は、下地材の板材間において吸収され、階段の歩行時の騒音が低減される。さらに、各板材が、熱および湿気に晒されても、これらは独立して伸縮するため、下地材全体として反り難い。   Here, the base material may be composed of a single plate material, or may be composed of a plurality of plate materials fixed or bonded to each other. However, as a preferred aspect, the base material is formed by laminating a plurality of plate materials. The plurality of plate members overlap each other in an unconstrained state. According to this aspect, since a plurality of plate materials that are the base material are laminated in a non-constrained state, the sound generated from the tread is absorbed between the base material plate materials, and when the stairs are walking Noise is reduced. Furthermore, even if each plate material is exposed to heat and moisture, they are expanded and contracted independently, so that it is difficult for the entire base material to warp.

さらに好ましい態様としては、前記仕上げ材の前記下地材に接触する下面には、前記踏み板の長手方向に交差する方向に沿ってスリットが形成されている。このように構成された階段構造では、仕上げ材の表面は、下地材に比べて外気に直接晒されるため、湿気により伸縮し易いところ、長手方向に交差する方向に沿ってスリットを形成することにより、仕上げ材の下面全体に作用する応力をスリットを介して分断することができる。この結果、仕上げ材の反りを抑えることができる。なお、本発明でいう、「踏み板の長手方向」とは、踏み板を踏み部に載置した時に、階段の有効幅に沿った方向と一致する方向である。   As a more preferable aspect, a slit is formed in a lower surface of the finishing material that contacts the base material along a direction intersecting a longitudinal direction of the tread plate. In the staircase structure configured in this way, the surface of the finishing material is directly exposed to the outside air as compared to the base material, so it is easy to expand and contract due to moisture, but by forming a slit along the direction intersecting the longitudinal direction The stress acting on the entire bottom surface of the finishing material can be divided through the slit. As a result, the warping of the finishing material can be suppressed. In the present invention, the “longitudinal direction of the tread board” is a direction that coincides with the direction along the effective width of the stairs when the tread board is placed on the tread portion.

さらに、前記仕上げ材には、前記踏み板の長手方向に亘って、前記踏み板の一部と、これに連続する段鼻とを被覆するカバー材が取付けられていることが好ましい。このように構成された階段構造では、踏み板の一部と、これに隣接する段鼻を被覆するカバー材により、仕上げ材の反りを防止することができる。   Furthermore, it is preferable that a cover material that covers a part of the tread plate and a nose continuous therewith is attached to the finishing material in the longitudinal direction of the tread plate. In the staircase structure configured as described above, it is possible to prevent the finishing material from being warped by the cover material covering a part of the step board and the nose adjacent thereto.

下地材の材料は、樹脂材料または無機材料であれば、特に限定されるものではないが、より好ましい態様としては、前記下地材は、石膏ボードからなる。この態様によれば、下地材を石膏ボードとすることにより、材料費のコストダウンを達成できる。石膏ボードは、他の材料に比べて低伸縮性を有するため、湿度変化および温度変化に起因とした下地材の変形を好適に抑えることができる。さらに、下地材が石膏ボードからなるので、踏み板の防耐火性を高めることができる。   The material of the base material is not particularly limited as long as it is a resin material or an inorganic material. However, as a more preferable aspect, the base material is made of gypsum board. According to this aspect, the material cost can be reduced by using the gypsum board as the base material. Since the gypsum board has low stretchability compared to other materials, deformation of the base material due to humidity change and temperature change can be suitably suppressed. Furthermore, since the base material is made of gypsum board, the fire resistance of the footboard can be improved.

また、仕上げ材の材料は、下地材とは異なる材料であれば、特に限定されるものではないが、下地材の材料よりも、硬質の材料であること好ましく、たとえば、無垢材等の木質系材料などであってもよい。しかしながら、より好ましい態様として、前記仕上げ材は、合板からなる。この態様によれば、合板からなる仕上げ材を用いることで、下地材を保護できるとともに、美観を向上させることができる。特に、下地材が石膏ボードである場合には、歩行時にヒール等で石膏ボードが凹むことを防止することができる。さらに、仕上げ材である合板は、吸湿および乾燥等により反り易いが、下地材と非拘束状態で重なったとても、合板の上面に上述したスリットを設ければ、このような反りを抑えることができる。   Further, the material of the finishing material is not particularly limited as long as it is a material different from the base material, but it is preferably a hard material rather than the material of the base material, for example, a wood-based material such as a solid material. It may be a material. However, as a more preferable aspect, the finishing material is made of plywood. According to this aspect, by using the finishing material made of plywood, the base material can be protected and the aesthetic appearance can be improved. In particular, when the base material is a gypsum board, it is possible to prevent the gypsum board from being dented with a heel or the like during walking. Furthermore, the plywood that is a finishing material is likely to warp due to moisture absorption, drying, etc. However, if the above-mentioned slit is provided on the upper surface of the plywood that overlaps with the base material in an unrestrained state, such warping can be suppressed. .

前記踏み部には、前記踏み板の載置面よりも、上方に延出させた段鼻を形成することにより、前記踏み板を収容する収容凹部が形成されていることが好ましい。この態様によれば、各踏み部に取付け取外し自在に載置される踏み板は、上方に延出させた段鼻により形成された収容凹部に挿入し、踏み部に載置されるため、踏み板の水平方向の移動が阻止されて、踏み板を定位置に安定して載置できる。   It is preferable that an accommodation recess for accommodating the tread is formed in the tread by forming a nose extending upward from the mounting surface of the tread. According to this aspect, the tread plate that is detachably mounted on each tread portion is inserted into the housing recess formed by the nose extended upward and placed on the tread portion. The movement of the direction is prevented, and the tread plate can be stably placed at a fixed position.

本発明の階段構造は、乾式の施工で軽量に構成することができるため、施工および解体を容易に行なうことができる。また、階段本体と踏み部に載置される踏み板とを容易に分別できるとともに、リサイクル作業が容易となる。   Since the staircase structure of the present invention can be constructed lightly by dry construction, construction and disassembly can be easily performed. In addition, the stair body and the tread plate placed on the step portion can be easily separated, and the recycling work is facilitated.

本発明に係る階段構造の第1実施形態を示し、(a)は要部断面図、(b)は(a)の踏み部の側面図。The 1st Embodiment of the staircase structure concerning this invention is shown, (a) is principal part sectional drawing, (b) is a side view of the step part of (a). (a)は図1に示す階段構造の階段本体の要部斜視図、(b)は(a)の階段本体に載置する踏み板の斜視図。(A) is a principal part perspective view of the staircase main body of the staircase structure shown in FIG. 1, (b) is a perspective view of the step board mounted in the staircase main body of (a). (a)は図2(b)に示す踏み板の拡大図、(b)は(a)の分解図、(c)は(b)の長手方向に沿う要部断面図、(d)は(c)の変形例の要部断面図。(A) is an enlarged view of the footboard shown in FIG. 2 (b), (b) is an exploded view of (a), (c) is a cross-sectional view of the main part along the longitudinal direction of (b), and (d) is (c) The principal part sectional drawing of the modification of). 図1〜3で示す階段構造の上部に踊り場を形成した要部斜視図。The principal part perspective view which formed the landing in the upper part of the staircase structure shown in FIGS. 図1〜3で示す階段構造の下部に踊り場を形成した要部斜視図。The principal part perspective view which formed the landing in the lower part of the staircase structure shown in FIGS. (a)は本発明に係る階段構造の第2実施形態の要部断面図、(b)はカバー材の長手方向に直交した断面図。(A) is principal part sectional drawing of 2nd Embodiment of the staircase structure based on this invention, (b) is sectional drawing orthogonal to the longitudinal direction of a cover material. 本発明に係る階段構造の第3実施形態の要部断面図。Sectional drawing of the principal part of 3rd Embodiment of the staircase structure concerning this invention. (a)は本発明に係る階段構造の第4実施形態の要部断面図、(b)は(a)の踏み部の側面図。(A) is principal part sectional drawing of 4th Embodiment of the staircase structure concerning this invention, (b) is a side view of the step part of (a). (a)は図8に示す階段構造の階段本体の要部斜視図、(b)は(a)の階段本体に載置する踏み板の斜視図。(A) is a principal part perspective view of the staircase main body of the staircase structure shown in FIG. 8, (b) is a perspective view of the step board mounted in the staircase main body of (a). (a)は図8に示す階段構造の階段本体の変形例の要部断面図、(b)は(a)の階段本体に用いる踏み部の側面図。(A) is principal part sectional drawing of the modification of the staircase main body of the staircase structure shown in FIG. 8, (b) is a side view of the step part used for the staircase main body of (a).

〔第1実施形態〕
以下、図1〜5を参照して、本発明に係る階段構造の第1実施形態を詳細に説明する。
図1〜3において、階段構造1は、一対の側桁2,2と、一対の側桁2,2の間にわたされた複数の踏み部3,3…と、を少なくとも備えた階段本体4と、各踏み部3,3…に載置される踏み板5,5…と、を備えている。踏み板5は、階段本体4に対して取付け取外し自在に、踏み部3に載置されるものである。
[First Embodiment]
Hereinafter, with reference to FIGS. 1-5, 1st Embodiment of the staircase structure which concerns on this invention is described in detail.
1-3, the staircase structure 1 includes a staircase body 4 including at least a pair of side girders 2 and 2 and a plurality of stepped portions 3, 3... And tread plates 5, 5... Placed on each tread 3, 3,. The tread board 5 is placed on the tread portion 3 so as to be attached to and detached from the staircase body 4.

一対の側桁2,2は十分な強度を有する鉄板などの金属厚板で形成され、例えば10mm程度の厚さを有する金属板材で形成されている。一対の側桁2,2は、基本的には基礎等の水平なベース面に対して所定の角度で傾斜する形状であり、必要に応じて上部または下部に水平な踊り場を有する形状に形成されている。   The pair of side girders 2 and 2 are formed of a thick metal plate such as an iron plate having sufficient strength, for example, a metal plate material having a thickness of about 10 mm. The pair of side girders 2 and 2 basically has a shape that is inclined at a predetermined angle with respect to a horizontal base surface such as a foundation, and is formed into a shape having a horizontal landing at the top or bottom as required. ing.

各踏み部3は、図1(b)に示すように、側桁2,2より薄い鉄板などの金属板材を屈曲させて、L字状に近い形状に形成されている。本実施形態では、各踏み部3は、金属板材を直角よりさらに大きい屈曲角度θで屈曲されている。各踏み部3の長手方向の幅は、階段の有効幅に相当し、80〜100cm程度に設定されている。各踏み部3は、水平方向に沿った踏面部3aを有するとともに、踏面部3aの奥行端から上方に延出する蹴込み部3bを有しており、蹴込み部3bの上部が段鼻3cとなっている。   As shown in FIG. 1B, each step portion 3 is formed in a shape close to an L shape by bending a metal plate material such as an iron plate thinner than the side beams 2 and 2. In the present embodiment, each step portion 3 is bent at a bending angle θ larger than the right angle of the metal plate material. The width in the longitudinal direction of each step 3 corresponds to the effective width of the staircase and is set to about 80 to 100 cm. Each tread portion 3 has a tread surface portion 3a along the horizontal direction and a kick portion 3b extending upward from the depth end of the tread surface portion 3a. The upper portion of the kick portion 3b is a nose 3c. It has become.

複数の踏み部3,3…は、その水平方向の両端部で側桁2,2に溶接等で接合されている。複数の踏み部3,3…は、図1(a)に示すように、上段に位置する踏み部3の踏面部3aが、下段に位置する踏み部3の蹴込み部3bの上端から深さHだけ下がった位置に連続するように、下段の踏み部3に接合されている。このため、階段本体4には、踏み部3の踏み板5が載置される載置面3fから、深さHに相当する分だけ上方に延出された段鼻3cが形成されている。この段鼻3cにより、踏み部3の踏面部3aの上には、踏み板5,5…を収容するための上方に開口した収容凹部3dが形成されている。   The plurality of stepped portions 3, 3,... Are joined to the side beams 2, 2 by welding or the like at both ends in the horizontal direction. As shown in FIG. 1 (a), the plurality of stepped portions 3, 3... Have a depth from the upper end of the kicked portion 3b of the stepped portion 3 located in the lower step so that the tread surface portion 3a of the stepped portion 3 located in the upper step is It is joined to the lower step 3 so as to continue to the position lowered by H. For this reason, the staircase body 4 is formed with a nose 3c extending upward from the placement surface 3f on which the tread plate 5 of the step portion 3 is placed by an amount corresponding to the depth H. By this nose 3c, an accommodation recess 3d opened upward for accommodating the tread plates 5, 5... Is formed on the tread surface portion 3a of the tread portion 3.

本実施形態の階段構造1では、踏み板5は、階段本体4に対して取付け取外し自在となるように、踏み部3の踏面部3aに載置されている。具体的には、収容凹部3dに、踏み板5が、階段本体4に対して上方から非拘束状態で載置されている。踏み板5の厚さTは、収容凹部3dの深さHと一致している。すなわち、本実施形態では、段鼻3cの高さと踏み板5の厚さTが一致しており、段鼻3cの上端と踏み板5の踏み面3gとが同じ平面上に位置するようになっている。   In the staircase structure 1 of the present embodiment, the tread plate 5 is placed on the tread surface portion 3a of the tread portion 3 so that it can be attached to and detached from the staircase body 4. Specifically, the tread plate 5 is placed in the housing recess 3d in an unconstrained state with respect to the staircase body 4 from above. The thickness T of the tread plate 5 matches the depth H of the housing recess 3d. That is, in the present embodiment, the height of the nosing 3c and the thickness T of the tread board 5 coincide with each other, and the upper end of the nosing 3c and the tread surface 3g of the tread board 5 are located on the same plane.

踏み板5は、無機材料からなる下地材6と、下地材6の上側において、下地材6に積層され、下地材6とは異なる材料からなる仕上げ材7と、を備えている。ここで、仕上げ材7を構成する材料としては、下地材6の材料よりも硬質の材料が好ましい。これにより、階段の使用時に踏み面3gがヒール等により凹むことを低減することができる。   The footboard 5 includes a base material 6 made of an inorganic material, and a finishing material 7 laminated on the base material 6 on the upper side of the base material 6 and made of a material different from the base material 6. Here, the material constituting the finishing material 7 is preferably a material harder than the material of the base material 6. Thereby, it can reduce that tread surface 3g dents by a heel etc. at the time of use of a staircase.

本実施形態では、下地材6は、3枚の積層された板材6aからなる。下地材6(すなわち最上層の板材6a)と仕上げ材7とは、相互に非拘束状態で重なっている。さらに、3枚の下地材6の板材6a,6a…同士も、相互に非拘束状態で重なっている。すなわち、下地材6と仕上げ材7とは、ビス止め等による固定もされず、接着剤により相互に接着されていない。同様に、3枚の下地材6の板材6a,6a…同士も、ビス止め等による固定もされず、接着剤により相互に接着されていない。   In the present embodiment, the base material 6 is composed of three laminated plate materials 6a. The base material 6 (that is, the uppermost plate material 6a) and the finishing material 7 overlap each other in an unconstrained state. Further, the plate materials 6a, 6a,... Of the three base materials 6 also overlap each other in an unconstrained state. That is, the base material 6 and the finishing material 7 are not fixed by screws or the like, and are not bonded to each other by an adhesive. Similarly, the plate members 6a, 6a,... Of the three base materials 6 are not fixed by screws or the like and are not bonded to each other by an adhesive.

より具体的には、下地材6を構成する3枚の板材6a,6a…は、それぞれ石膏ボードからなり、仕上げ材7は合板からなる。本実施形態では、その一例として、収容凹部3dの深さHが50mmに設定され、石膏ボード1枚の厚さは12.5mmであり、合板の1枚の厚さは12.5mmに設定され、踏み板5の厚さTは50mmに設定されている。   More specifically, the three plate members 6a, 6a... Constituting the base material 6 are each made of gypsum board, and the finishing material 7 is made of plywood. In this embodiment, as an example, the depth H of the housing recess 3d is set to 50 mm, the thickness of one gypsum board is 12.5 mm, and the thickness of one plywood is set to 12.5 mm. The thickness T of the footboard 5 is set to 50 mm.

踏み板5の表面に位置する仕上げ材7には、下方に位置する下地材6に接触する下面に、踏み板5の長手方向に交差する方向にスリット7aが形成されている。具体的には、スリット7aは、その下面から上方に向けて切込まれた溝状のスリットであり、図3(a),(b)に示すように、仕上げ材7の長手方向に直交する方向に形成されていることが好ましい。   In the finishing material 7 positioned on the surface of the tread plate 5, slits 7 a are formed in the direction crossing the longitudinal direction of the tread plate 5 on the lower surface in contact with the underlying material 6 positioned below. Specifically, the slit 7a is a groove-like slit cut upward from the lower surface thereof, and is orthogonal to the longitudinal direction of the finish 7 as shown in FIGS. 3 (a) and 3 (b). It is preferable that it is formed in the direction.

スリット7aは、例えば切込み幅が3mm以下で、深さが、仕上げ材7の板厚の50%以上に設定され、仕上げ材7の下面全体に作用する応力を分断する機能を有している。また、スリット7aは、仕上げ材7の長手方向に直交する方向に形成したが、仕上げ材7の下面全体に作用する応力を分断することができるのであれば、スリット7aが、踏み板5の長手方向に対して交差する角度は特に限定されるものではない。   For example, the slit 7 a has a cutting width of 3 mm or less, a depth set to 50% or more of the plate thickness of the finishing material 7, and a function of dividing stress acting on the entire lower surface of the finishing material 7. In addition, the slit 7a is formed in a direction perpendicular to the longitudinal direction of the finishing material 7. However, if the stress acting on the entire lower surface of the finishing material 7 can be divided, the slit 7a is formed in the longitudinal direction of the tread plate 5. The angle intersecting with respect to is not particularly limited.

また、本実施形態では、スリット7aを、仕上げ材7の下面の長手方向の中央に形成したが、これに限定されるものでなく、仕上げ材7の下面に、2本以上の複数本のスリットを形成してもよく、これらが交差していてもよい。また、図3(c)では、スリット7aの断面形状は矩形状であるが、これに限定されるものでなく、たとえば、図3(d)に示すように、断面形状が先端の尖った三角形状のスリット7bや、断面形状が半円形のスリット等であってもよい。   In the present embodiment, the slit 7a is formed in the center in the longitudinal direction of the lower surface of the finishing material 7. However, the present invention is not limited to this, and two or more slits are formed on the lower surface of the finishing material 7. May be formed, or these may intersect. In FIG. 3C, the sectional shape of the slit 7a is rectangular, but is not limited to this. For example, as shown in FIG. 3D, the sectional shape is a triangle with a sharp tip. It may be a slit 7b having a shape, a slit having a semicircular cross section, or the like.

図1(b)に示すように、踏み部3を構成する蹴込み部3bが、直角より大きく屈曲しているため、直角より僅かに大きく傾斜している。このため、相互に非拘束状態で重なっている仕上げ材7および下地材6の板材6a,6a…は、屈曲角度θに合わせて僅かにずらして重ね合わされている。蹴込み部3bが直角の場合には、ずらして重ねる必要はない。   As shown in FIG.1 (b), since the kick part 3b which comprises the step part 3 is bent more largely than a right angle, it inclines slightly larger than a right angle. Therefore, the finishing material 7 and the plate materials 6a, 6a,... Of the base material 6 that are overlapped with each other in an unconstrained state are overlapped with a slight shift in accordance with the bending angle θ. When the kick-in part 3b is a right angle, it is not necessary to overlap and stack.

図4に示すように、階段構造1の上部には、上部踊り場8Aが設けられており、上部踊り場8Aの一部となる踏み部11が配置されている。階段本体4の側桁2,2には、水平方向に延出する水平部2A,2Aが形成されており、踏み部11は、水平部2A,2Aの間をわたすように、水平部2A,2Aに溶接等により接合されている。   As shown in FIG. 4, an upper landing 8 </ b> A is provided in the upper part of the staircase structure 1, and a step portion 11 that is a part of the upper landing 8 </ b> A is disposed. Horizontal portions 2A and 2A extending in the horizontal direction are formed on the side girders 2 and 2 of the staircase body 4, and the tread portion 11 has the horizontal portions 2A and 2A so as to pass between the horizontal portions 2A and 2A. It is joined to 2A by welding or the like.

踏み部11は、水平面に延在した踏面部11aと、踏面部11aの端部から上方に延出する立上げ部11bとを備えており、踏面部11aは上部踊り場8Aに応じた面積を有している。踏面部11aの上には、踏み板12を収容するための上方に開口した収容凹部11cが形成されている。上部踊り場8Aでは、収容凹部11cが、側桁2,2の水平部2A,2A、立上げ部11b、及び段鼻3cで囲むことにより、形成されている。踏み板12は、階段本体4に対して取付け取外し自在にとなるように、収容凹部11cに収容された踏み板12は、相互に非拘束状態で、踏み部11に載置されている。   The tread portion 11 includes a tread portion 11a extending in a horizontal plane and a rising portion 11b extending upward from an end portion of the tread portion 11a. The tread portion 11a has an area corresponding to the upper landing 8A. doing. On the tread surface portion 11a, an accommodation recess 11c that opens upward for accommodating the tread plate 12 is formed. In the upper landing 8A, the housing recess 11c is formed by surrounding the horizontal portions 2A and 2A of the side girders 2 and 2, the rising portion 11b, and the nose 3c. The footboards 12 accommodated in the accommodation recesses 11c are placed on the stepping portion 11 in a non-constrained state so that the footboard 12 can be freely attached to and detached from the staircase body 4.

踏み板12は、前記した踏み板5と同様の材料からなり、下地材13と、下地材13に積層された仕上げ材14と、を備えている。本実施形態では、下地材13は、3枚の板材13a,13a…が積層されたものである。下地材13と、仕上げ材14とは、相互に非拘束状態で重なっており、下地材13の板材13a,13a…同士も、相互に非拘束状態で重なっている。上部踊り場8Aでは、隣接する下段の踏み部3の段鼻3c上端と、踏み板12の踏み面11gとが同一平面状にある。   The footboard 12 is made of the same material as that of the footboard 5 described above, and includes a base material 13 and a finishing material 14 laminated on the base material 13. In the present embodiment, the base material 13 is a laminate of three plate materials 13a, 13a. The base material 13 and the finishing material 14 overlap with each other in an unconstrained state, and the plate members 13a, 13a... Of the base material 13 also overlap with each other in an unconstrained state. In the upper landing 8A, the upper end of the nose 3c of the adjacent lower step portion 3 and the step surface 11g of the step plate 12 are in the same plane.

同様に、図5に示す階段構造1の下部には、下部踊り場8Bが設けられており、下部踊り場8Bの一部となる踏み部15が配置されている。踏み部15は、側桁2,2に形成された水平部2B,2Bの間をわたすように、水平部2B,2Bに溶接等により接合されている。   Similarly, a lower landing 8B is provided at the lower portion of the staircase structure 1 shown in FIG. 5, and a step portion 15 that is a part of the lower landing 8B is disposed. The step portion 15 is joined to the horizontal portions 2B and 2B by welding or the like so as to pass between the horizontal portions 2B and 2B formed on the side beams 2 and 2.

踏み部15は、水平面に延在した踏面部15aと、踏面部15aの端部から上方に延出する蹴込み部15bと、を備えている。蹴込み部15bは、屈曲角度が踏み部3の蹴込み部3bと同様であり、その上部には段鼻15cが形成されている。さらに、蹴込み部15bと対向する辺には、踏み板16の厚さに応じた高さ50mm程度の立上げ部15dが形成されている。   The tread portion 15 includes a tread surface portion 15a extending in a horizontal plane, and a kicking portion 15b extending upward from an end portion of the tread surface portion 15a. The kicking portion 15b has a bending angle similar to that of the kicking portion 3b of the stepping portion 3, and a nose 15c is formed on the upper portion thereof. Further, a rising portion 15d having a height of about 50 mm corresponding to the thickness of the tread plate 16 is formed on the side facing the kicking portion 15b.

踏面部15aの上には、踏み板16を収容するための上方に開口した収容凹部15eが形成されている。下部踊り場8Bでは、収容凹部15eは、側桁の水平部2B,2B、蹴込み部15b、および立上げ部15dで囲むことにより、形成されている。踏み板16は、取付け取外し自在に載置される。踏み板16は、階段本体4に対して取付け取外し自在に、収容凹部15eに収容された状態で、非拘束状態で、踏み部15に載置されている。   On the tread surface portion 15a, an accommodation recess 15e opened upward for accommodating the tread plate 16 is formed. In the lower landing 8B, the housing recess 15e is formed by being surrounded by the horizontal portions 2B and 2B of the side girders, the kicking portion 15b, and the rising portion 15d. The tread plate 16 is placed so as to be freely attached and detached. The tread plate 16 is mounted on the step portion 15 in an unconstrained state in a state of being accommodated in the accommodating recess 15e so as to be freely attached to and detached from the staircase body 4.

踏み板16は、踏み板5と同様の材料からなり、下地材17と、下地材17に積層された仕上げ材18と、を備えている。本実施形態では、下地材17は、3枚の板材17a,17a…が積層されたものである。下地材17と、仕上げ材18とは、相互に非拘束状態で重なっており、下地材17の板材17a,17a…同士も、相互に非拘束状態で重なっている。   The footboard 16 is made of the same material as the footboard 5 and includes a base material 17 and a finishing material 18 laminated on the base material 17. In the present embodiment, the base material 17 is a laminate of three plate materials 17a, 17a. The base material 17 and the finishing material 18 overlap with each other in an unconstrained state, and the plate members 17a, 17a... Of the base material 17 also overlap with each other in an unconstrained state.

前記の如く構成された本実施形態の階段構造1の製造方法について以下に説明する。先ず、一対の側桁2,2の対向する内面に、段鼻3cが形成されるように、複数の踏み部3,3…を配列する。この状態で、踏み部3の両側と側桁2,2とを溶接等により接合する。また、上段の踏面部3aの先端と下段に位置する踏み部3の蹴込み部3bも溶接等により接合する。   A method for manufacturing the staircase structure 1 of the present embodiment configured as described above will be described below. First, a plurality of stepped portions 3, 3,... Are arranged so that a nose 3c is formed on the opposing inner surfaces of the pair of side girders 2, 2. In this state, both sides of the stepping portion 3 and the side girders 2 and 2 are joined by welding or the like. Further, the tip of the upper tread surface portion 3a and the kicked portion 3b of the tread portion 3 located on the lower step are also joined by welding or the like.

上部踊り場8Aでは、側桁2,2の水平部2A,2Aの間に踏み部11をわたして、これらを溶接等により接合する。下部踊り場8Bでは、側桁2,2の水平部2B,2Bの間に踏み部15をわたして、これらを溶接等により接合する。このようにして、階段本体4が完成される。   In the upper landing 8A, the step 11 is placed between the horizontal portions 2A and 2A of the side girders 2 and 2, and these are joined by welding or the like. In the lower landing 8B, the step portion 15 is provided between the horizontal portions 2B, 2B of the side girders 2, 2, and these are joined by welding or the like. In this way, the staircase body 4 is completed.

このあと、収容凹部3dの上方から、各踏み板5を収容し、各踏み板5を、踏み部3の踏面部3aに載置する。同様に、収容凹部11cの上方から、踏み板12を収容し、踏み板12を、踏み部11の踏面部11aに載置し、収容凹部15eの上方から、踏み板16を収容し、踏み板16を、踏み部15の踏面部15aに載置する。   Thereafter, each tread plate 5 is accommodated from above the accommodating recess 3 d, and each tread plate 5 is placed on the tread surface portion 3 a of the tread portion 3. Similarly, the tread plate 12 is accommodated from above the accommodation recess 11c, the tread plate 12 is placed on the tread surface portion 11a of the tread portion 11, the tread plate 16 is accommodated from above the accommodation recess 15e, and the tread plate 16 is depressed. It is placed on the tread portion 15 a of the portion 15.

このように、踏み板5(12,16)は、階段本体4から取外し自在に、踏み部3(11,15)に載置さするため、乾式で容易に施工することができる。これにより、踏み部にモルタル等を打設して踏み板を成形する場合に比べて、階段の施工および解体を容易に行うことができる。   Thus, since the foot board 5 (12, 16) is detachably mounted on the step part 3 (11, 15) from the stair body 4, it can be easily constructed by a dry method. Thereby, construction and dismantling of stairs can be easily performed as compared with the case where a mortar or the like is placed on the stepping portion to form a stepping plate.

また、踏み板5(12,16)は、下地材6(13,17)と仕上げ材7(14,18)とを相互に非拘束状態で重ねた構成であり、下地材6(13,17)は3枚の板材6a(13a,17a)を、相互に非拘束状態で重ねた構成である。このため、下地材6(13,17)と仕上げ材7(14,18)とは、独立して伸縮し、踏み板5(12,16)全体としての反りを抑えることができる。さらに、3枚の板材6a(13a,17a)も、相互に非拘束状態で積層されているので、踏み面から発生する音は、下地材6(13,17)の板材6a(13a,17a)間において吸収され、階段の歩行時の騒音が低減される。さらに、各板材6a(13a,17a)が、熱および湿気に晒されても、これらは独立して伸縮し、下地材6(13,17)全体として大きく変形することを防止することができる。   Further, the footboard 5 (12, 16) has a configuration in which the base material 6 (13, 17) and the finishing material 7 (14, 18) are stacked in an unconstrained state, and the base material 6 (13, 17). Is a configuration in which three plate members 6a (13a, 17a) are stacked in an unconstrained state. For this reason, the base material 6 (13, 17) and the finishing material 7 (14, 18) can be expanded and contracted independently, and the warping as the whole step board 5 (12, 16) can be suppressed. Further, since the three plate members 6a (13a, 17a) are also laminated in an unconstrained state, the sound generated from the tread surface is the plate member 6a (13a, 17a) of the base material 6 (13, 17). The noise during the walking of stairs is reduced. Furthermore, even if each plate material 6a (13a, 17a) is exposed to heat and moisture, they can be expanded and contracted independently, and the base material 6 (13, 17) as a whole can be prevented from being greatly deformed.

さらに、下地材6(13,17)は、無機材料である石膏ボードで形成されているため、低コストに構成できるとともに、湿気より膨潤し難いため、踏み板5(12,16)の反りを低減することができる。さらに、階段本体4は、金属材料からなり、下地材6(13,17)は、石膏ボードであるため、階段の防耐火性を高めることができる。仕上げ材7(14,18)は、合板で形成されているため、踏み部3等に圧力が加わったとき下地材の石膏ボードを保護できるとともに、美観を向上させることができる。そして、踏み板5(12,16)をメンテナンスする場合には、踏み板5(12,16)は、各部材を相互に非拘束状態に重ねられているだけであるので容易に取外すことができ、施工が容易となる。   Furthermore, since the base material 6 (13, 17) is formed of a gypsum board that is an inorganic material, it can be configured at a low cost, and is less likely to swell from moisture, thereby reducing warping of the tread board 5 (12, 16). can do. Furthermore, since the staircase body 4 is made of a metal material and the base material 6 (13, 17) is a gypsum board, the fire resistance of the staircase can be improved. Since the finishing material 7 (14, 18) is formed of plywood, the gypsum board as the base material can be protected and pressure can be improved when pressure is applied to the stepping portion 3 and the like. When the tread board 5 (12, 16) is to be maintained, the tread board 5 (12, 16) can be easily removed because the members are simply stacked in an unconstrained state. Becomes easy.

また、仕上げ材7にスリット7aを形成することで、仕上げ材7の下面全体に作用する応力をスリット7aを介して分断することができる。この結果、仕上げ材7の反りを抑えることができる。なお、上部および下部踊り場8A、8Bを構成する仕上げ材14,18にもスリットを形成し、仕上げ材14,18の反りを低減してもよい。上部および下部踊り場8A,8Bを構成する仕上げ材14,18は、正方形に近い形状であるため、スリットを十字状に交差して設けてもよい。また、上部および下部踊り場8A,8Bを構成する仕上げ材14,18が、分割された複数の板材で構成されていてもよい。   Further, by forming the slit 7a in the finishing material 7, the stress acting on the entire lower surface of the finishing material 7 can be divided through the slit 7a. As a result, warping of the finishing material 7 can be suppressed. In addition, a slit may be formed also in the finishing materials 14 and 18 which comprise the upper and lower landings 8A and 8B, and the curvature of the finishing materials 14 and 18 may be reduced. Since the finishing materials 14 and 18 constituting the upper and lower landings 8A and 8B have a shape close to a square, slits may be provided so as to cross in a cross shape. Moreover, the finishing materials 14 and 18 which comprise the upper and lower landings 8A and 8B may be composed of a plurality of divided plates.

〔第2実施形態〕
本発明の第2実施形態を図6に基づき詳細に説明する。図6(a)は、本発明に係る階段構造1Aの第2実施形態の要部断面図であり、図6(b)は、カバー材25の長手方向に直交した断面図である。なお、この実施形態は前記した実施形態に対し、カバー材25をさらに設けた点が相違する。そして、他の実質的に同等の構成については同じ符号を付して詳細な説明は省略する。
[Second Embodiment]
A second embodiment of the present invention will be described in detail with reference to FIG. 6A is a cross-sectional view of a main part of the second embodiment of the staircase structure 1A according to the present invention, and FIG. 6B is a cross-sectional view orthogonal to the longitudinal direction of the cover member 25. This embodiment is different from the above-described embodiment in that a cover member 25 is further provided. Other substantially equivalent configurations are denoted by the same reference numerals, and detailed description thereof is omitted.

図6において、本実施形態の階段構造1Aでは、カバー材25は、踏み板5の長手方向(有効幅方向)に亘って、踏み板5の踏み面の一部(端縁部)と、これに隣接する段鼻3cと、を被覆している。カバー材25は、例えばアルミニウム材のアングル材で形成され、カバー材25の水平部分25aは踏み板5の一部を覆うように位置し、垂直部分25bは段鼻3cの一部を覆うように位置する。水平部分25aには、滑り止め用の複数の溝(図示せず)が長手方向に沿って形成されている。カバー材25は、水平部分25aの長手方向に沿って形成された複数の貫通孔25cにねじ等の固定具26で合板である仕上げ材7に固定されている。   In FIG. 6, in the staircase structure 1 </ b> A of the present embodiment, the cover material 25 is adjacent to a part of the tread surface (edge portion) of the tread plate 5 over the longitudinal direction (effective width direction) of the tread plate 5. And the nosing 3c. The cover member 25 is formed of, for example, an aluminum angle member, the horizontal portion 25a of the cover member 25 is positioned so as to cover a part of the footboard 5, and the vertical portion 25b is positioned so as to cover a part of the nosing 3c. . A plurality of anti-slip grooves (not shown) are formed in the horizontal portion 25a along the longitudinal direction. The cover material 25 is fixed to the finishing material 7 which is a plywood with a fixing tool 26 such as a screw in a plurality of through holes 25c formed along the longitudinal direction of the horizontal portion 25a.

この実施形態においては、踏み板5の踏み面の一部と、これに隣接する段鼻3cと、を被覆するカバー材25を取付けたことにより、仕上げ材7が、階段本体4から脱落することを防止できる。さらに、仕上げ材7の一部が、カバー材25により覆われているため、仕上げ材7の反りを防止することができる。なお、固定具26を仕上げ材7のみに固定すれば、仕上げ材7と下地材6とを、相互に非拘束状態で重ねることができる。   In this embodiment, the finishing material 7 is prevented from falling off the staircase body 4 by attaching the cover material 25 that covers a part of the tread surface of the tread board 5 and the nose 3c adjacent thereto. it can. Furthermore, since a part of the finishing material 7 is covered with the cover material 25, the warping of the finishing material 7 can be prevented. In addition, if the fixing tool 26 is fixed only to the finishing material 7, the finishing material 7 and the base material 6 can be stacked in an unconstrained state.

〔第3実施形態〕
つぎに、本発明に係る階段構造1Bの第3実施形態について図7を参照して説明する。図7は、その要部断面図である。なお、この実施形態は前記した実施形態に対し、踏み板が、1枚の下地材で構成される点が相違する。そして、他の実質的に同等の構成については同じ符号を付して詳細な説明は省略する。
[Third Embodiment]
Next, a third embodiment of the staircase structure 1B according to the present invention will be described with reference to FIG. FIG. 7 is a cross-sectional view of an essential part thereof. Note that this embodiment is different from the above-described embodiment in that the tread board is composed of a single base material. Other substantially equivalent configurations are denoted by the same reference numerals, and detailed description thereof is omitted.

この実施形態では、踏み板5Aは、各踏み部3,3…に取付け取外し自在に載置されるものであり、1枚の石膏ボードからなる下地材6Aと、その上に位置する1枚の合板からなる仕上げ材7Aとを備えている。踏み板5Aは、階段本体4の収容凹部3dに収容され、踏み部3に載置される。この実施形態では、踏み板5Aは1枚の下地材6Aと、1枚の仕上げ材7Aとで構成されるため、構成を簡単にできるとともに、施工が容易となるものである。   In this embodiment, the foot board 5A is detachably mounted on each of the foot parts 3, 3,..., And is a base material 6A made of one gypsum board and one plywood located thereon. And a finishing material 7A. The tread plate 5 </ b> A is accommodated in the accommodating recess 3 d of the staircase body 4 and placed on the tread portion 3. In this embodiment, since the tread board 5A is composed of one base material 6A and one finishing material 7A, the construction can be simplified and the construction is facilitated.

〔第4実施形態〕
つぎに、本発明に係る階段構造のさらに第4実施形態について、図8,9を参照して詳細に説明する。図8(a)は、本発明に係る階段構造1Cの第4実施形態の要部断面図であり、図8(b)は、図8(a)の踏み部33の側面図である。図9(a)は、図8に示す階段構造1Cの階段本体4の要部斜視図であり、図9(b)は、図9(a)の階段本体4に載置する踏み板5の斜視図である。
[Fourth Embodiment]
Next, a fourth embodiment of the staircase structure according to the present invention will be described in detail with reference to FIGS. FIG. 8A is a cross-sectional view of a main part of a fourth embodiment of the staircase structure 1C according to the present invention, and FIG. 8B is a side view of the stepped portion 33 of FIG. FIG. 9A is a perspective view of a main part of the staircase body 4 of the staircase structure 1C shown in FIG. 8, and FIG. 9B is a perspective view of the step board 5 placed on the staircase body 4 of FIG. 9A. FIG.

図8(b)に示すように、本実施形態に係る階段構造1Cでは、各踏み部33は、1枚の金属板材を屈曲して形成したものである。踏み部33は、水平方向に沿って形成された踏面部33aと、踏面部33aの後端から上方に向けて直角に延出する蹴込み部33bと、踏面部33aの前端から上方に向けて直角に延出する前方延出部として段鼻33cと、を備えている。   As shown in FIG. 8B, in the staircase structure 1C according to the present embodiment, each step portion 33 is formed by bending one metal plate material. The step portion 33 includes a tread surface portion 33a formed along the horizontal direction, a kicking portion 33b extending perpendicularly from the rear end of the tread surface portion 33a, and an upward direction from the front end of the tread surface portion 33a. A nose 33c is provided as a front extension extending at a right angle.

本実施形態では、階段本体4の各踏み部33には、踏み板5を収容するための収容凹部33dが形成されている。収容凹部33dの深さHと踏み板5の厚さTとは、同じ大きさである。なお、踏み板5は前記した実施形態と同じ構成であり、3枚の石膏ボードからなる下地材6,6…と、1枚の合板からなる仕上げ材7で構成され、下地材6,6…と仕上げ材7とは、相互に非拘束状態で重なっている。   In the present embodiment, each step 33 of the staircase body 4 is formed with an accommodation recess 33 d for accommodating the tread plate 5. The depth H of the housing recess 33d and the thickness T of the tread plate 5 are the same size. The tread board 5 has the same configuration as that of the above-described embodiment, and is composed of the base material 6, 6... Made of three gypsum boards and the finishing material 7 made of one plywood. The finishing material 7 overlaps with each other in an unconstrained state.

この実施形態の踏み部33は、長手方向の両端部の踏面部33a、蹴込み部33b、段鼻33cが側桁2,2の間にわたされて接合されている。また、下段の踏み部33の蹴込み部33bの上端が、上段の踏み部33の段鼻3cより奥行方向に距離Lだけ後退した位置で、上段の踏面部33aの下面に接合されているため、階段構造1Cをコンパクトにすることができる。   In the tread portion 33 of this embodiment, a tread surface portion 33a, a kick-in portion 33b, and a nose 33c at both ends in the longitudinal direction are joined between the side girders 2 and 2. Further, since the upper end of the kicking portion 33b of the lower step portion 33 is joined to the lower surface of the upper step portion 33a at a position retracted by a distance L in the depth direction from the nose 3c of the upper step portion 33, The staircase structure 1C can be made compact.

つぎに、図10を参照して、第4実施形態の階段構造1Cの変形例について説明する。図10(a)は、図8に示す階段構造1Dの階段本体4の変形例の要部断面図であり、図10(b)は、図10(a)の階段本体4に用いる踏み部35の側面図である。   Next, a modified example of the staircase structure 1C of the fourth embodiment will be described with reference to FIG. 10A is a cross-sectional view of the main part of a modification of the staircase body 4 of the staircase structure 1D shown in FIG. 8, and FIG. 10B is a step portion 35 used for the staircase body 4 of FIG. 10A. FIG.

この変形例の階段構造1Dでは、踏み部35…は、水平方向に沿って形成された踏面部35aと、踏面部33aの後端から上方に向けて直角に延出する立ち上がり部35bと、踏面部35aの前端から上方に向けて直角に延出する段鼻35cと、を備えている。   In the staircase structure 1D of this modified example, the stepped portions 35 are composed of a stepped surface portion 35a formed along the horizontal direction, a rising portion 35b extending perpendicularly from the rear end of the stepped surface portion 33a, and a stepped portion 35b. A nose 35c extending perpendicularly upward from the front end of the surface portion 35a.

本実施形態では、上段の踏み部33と、下段の踏み部33とは、直接的に接合されておらず、この変形例では、階段本体4に蹴り込み部が存在せず、階段本体4には、上段の踏み部33と下段の踏み部33との間に、貫通孔36が形成されている。これにより、この変形例に係る階段構造1Dでは、階段本体4を軽量化することができるとともに、通気性能が向上した階段構造とすることができる。   In the present embodiment, the upper step portion 33 and the lower step portion 33 are not directly joined. In this modification, the staircase body 4 has no kick-in portion, and the staircase body 4 A through hole 36 is formed between the upper step 33 and the lower step 33. Thereby, in the staircase structure 1D according to this modification, the staircase body 4 can be reduced in weight, and a staircase structure with improved ventilation performance can be obtained.

以上、本発明の実施形態について詳述したが、本発明は、前記の実施形態に限定されるものではなく、特許請求の範囲に記載された本発明の精神を逸脱しない範囲で、種々の設計変更を行うことができるものである。例えば、下地材として、3枚の石膏ボードの例を示したがさらに多数枚でもよいことは勿論である。   Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various designs can be made without departing from the spirit of the present invention described in the claims. It can be changed. For example, the example of three plaster boards is shown as the base material, but it goes without saying that a larger number may be used.

また、下地材を構成する無機材料からなる板材として、石膏ボードを例示したが、この他にも、ALC板、ケイカル板、フレキシブルボード等を用いてもよい。特に、ALC板、ケイカル板は膨張率が小さく低伸縮性を有するため、表裏面での伸縮差が小さく、板材の反りが小さくなり好適である。   Moreover, although the gypsum board was illustrated as a board | plate material which consists of an inorganic material which comprises a base material, you may use an ALC board, a calcium board, a flexible board, etc. besides this. In particular, since the ALC plate and the calcium plate have a small expansion coefficient and low stretchability, the stretch difference between the front and back surfaces is small, and the warpage of the plate material is small.

また、下地材を構成する板材は、樹脂材料から板材であってもよく、樹脂材料としては特に限定されるものではないが、例えば、PP(ポリプロピレン)樹脂板、PE(ポリエチレン)樹脂板等を用いることができる。これらの樹脂材料は、吸湿性がほとんどないため、湿気の影響を受け難く好適である。   Further, the plate material constituting the base material may be a resin material to a plate material, and the resin material is not particularly limited. For example, a PP (polypropylene) resin plate, a PE (polyethylene) resin plate, etc. Can be used. Since these resin materials have almost no hygroscopicity, they are suitable to be hardly affected by moisture.

さらに、踏み板の表面に位置する仕上げ材の上に、Pタイルやクッションフロア等の床材を適宜敷設してもよい。また、図7〜図10に示す階段構造においても、カバー材を設置することができる。   Furthermore, floor materials such as P tiles and cushion floors may be appropriately laid on the finishing material located on the surface of the tread board. Moreover, a cover material can also be installed in the staircase structure shown in FIGS.

1,1A,1B,1C、1D:階段構造、2:側桁、3:踏み部、3a:踏面部、3b:蹴込み部、3c:段鼻、3d:収容凹部、4:階段本体、5,5A:踏み板、6,6A:下地材、6a:板材、7,7A:仕上げ材、7a:スリット、11:踏み部(踊り場)、11a:踏面部、11b:立上げ部、11c:収容凹部、12:踏み板、13:下地材、14:仕上げ材、15:踏み部、15a:踏面部、15b:蹴込み部、15e:収容凹部、16:踏み板、17:下地材、18:仕上げ材、21:踏み部(踊り場)、22:踏み板、25:カバー材、33:踏み部、33a:踏面部、33c:段鼻、33d:収容凹部、35:踏み部、35c:段鼻、35d:収容凹部 1, 1A, 1B, 1C, 1D: Stair structure, 2: Side girder, 3: Stepping part, 3a: Treading part, 3b: Kicking part, 3c: Nosing part, 3d: Housing recess, 4: Staircase body, 5, 5A: Tread board, 6, 6A: Base material, 6a: Plate material, 7, 7A: Finishing material, 7a: Slit, 11: Step part (landing place), 11a: Tread part, 11b: Rising part, 11c: Housing recess, 12: Tread board, 13: Base material, 14: Finishing material, 15: Step part, 15a: Tread part, 15b: Kicking part, 15e: Housing recess, 16: Tread board, 17: Base material, 18: Finishing material, 21 : Tread part (landing), 22: tread board, 25: cover material, 33: tread part, 33a: tread part, 33c: stair nosing, 33d: accommodation recess, 35: tread part, 35c: stair nosing, 35d: accommodation recess

Claims (8)

一対の側桁と、前記一対の側桁の間にわたされた複数の踏み部と、を有した階段本体と、前記各踏み部に載置された踏み板と、を備えた階段構造であって、
前記踏み板は、前記階段本体に対して取付け取外し自在に、前記踏み部に載置されるものであり、
樹脂材料または無機材料からなる下地材と、
前記下地材の上に積層され、前記下地材とは異なる材料からなる仕上げ材と、
を備えることを特徴とする階段構造。
A staircase structure comprising: a staircase body having a pair of side girders, and a plurality of stepped portions passed between the pair of side girders; and a tread plate placed on each stepped portion. ,
The tread plate is placed on the tread portion so as to be freely attached to and detached from the staircase body,
A base material made of a resin material or an inorganic material;
A finishing material laminated on the base material and made of a material different from the base material;
A staircase structure characterized by comprising:
前記下地材と、前記仕上げ材とは、相互に非拘束状態で重なっていることを特徴とする請求項1に記載の階段構造。   The staircase structure according to claim 1, wherein the base material and the finishing material overlap with each other in an unconstrained state. 前記下地材は、複数の板材が積層されたものであり、前記複数の板材同士は、相互に非拘束状態で重なっていることを特徴とする請求項1または2に記載の階段構造。   The staircase structure according to claim 1, wherein the base material is a laminate of a plurality of plate materials, and the plurality of plate materials overlap with each other in an unconstrained state. 前記仕上げ材の前記下地材に接触する下面には、前記踏み板の長手方向に交差する方向に沿ってスリットが形成されていることを特徴とする請求項1〜3のいずれか一項に記載の階段構造。   The slit is formed in the lower surface which contacts the said base material of the said finishing material along the direction which cross | intersects the longitudinal direction of the said footboard, The Claim 1 characterized by the above-mentioned. Stair structure. 前記仕上げ材には、前記踏み板の長手方向に亘って、前記踏み板の一部と、これに連続する段鼻とを被覆するカバー材が取付けられていることを特徴とする請求項1〜4のいずれか一項に記載の階段構造。   The cover material which covers a part of said tread board and the nose continuous to this is attached to the said finishing material over the longitudinal direction of the said tread board. A staircase structure according to any one of the above. 前記下地材は、石膏ボードからなることを特徴とする請求項1〜5のいずれか一項に記載の階段構造。   The staircase structure according to any one of claims 1 to 5, wherein the base material is made of gypsum board. 前記仕上げ材は、合板からなることを特徴とする請求項1〜6のいずれか一項に記載の階段構造。   The staircase structure according to any one of claims 1 to 6, wherein the finishing material is made of plywood. 前記踏み部には、前記踏み板の載置面よりも、上方に延出させた段鼻を形成することにより、前記踏み板を収容する収容凹部が形成されていることを特徴とする請求項1〜7のいずれか一項に記載の階段構造。   8. An accommodation recess for accommodating the tread is formed in the tread by forming a nose extending upward from the mounting surface of the tread. The staircase structure according to any one of the above.
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6036669Y2 (en) * 1980-01-26 1985-10-31 株式会社ナカ技術研究所 anti-slip for stairs
JPH0230843A (en) * 1988-07-19 1990-02-01 N T T Toshi Kaihatsu Kk Steel framed unit stair
JPH0762824A (en) * 1993-08-25 1995-03-07 Sumikin Kozai Kogyo Kk Construction of steel mortar finish stair
JP2001317169A (en) * 2000-02-28 2001-11-16 Yokomori Mfg Co Ltd Steel framed stairs and passage unit
JP2003166323A (en) * 2001-12-03 2003-06-13 Misawa Homes Co Ltd Stair
JP2005133356A (en) * 2003-10-29 2005-05-26 Toyo Plywood Kk Tread of stairs
JP2007134226A (en) * 2005-11-11 2007-05-31 Daiken Trade & Ind Co Ltd Lighting device for reform use and its mounting structure
JP2008002080A (en) * 2006-06-20 2008-01-10 Naigai:Kk Stairs supporting structure
JP2010084342A (en) * 2008-09-29 2010-04-15 Daiken Corp Treadboard for soundproof staircase and soundproof staircase structure using the same

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6036669Y2 (en) * 1980-01-26 1985-10-31 株式会社ナカ技術研究所 anti-slip for stairs
JPH0230843A (en) * 1988-07-19 1990-02-01 N T T Toshi Kaihatsu Kk Steel framed unit stair
JPH0762824A (en) * 1993-08-25 1995-03-07 Sumikin Kozai Kogyo Kk Construction of steel mortar finish stair
JP2001317169A (en) * 2000-02-28 2001-11-16 Yokomori Mfg Co Ltd Steel framed stairs and passage unit
JP2003166323A (en) * 2001-12-03 2003-06-13 Misawa Homes Co Ltd Stair
JP2005133356A (en) * 2003-10-29 2005-05-26 Toyo Plywood Kk Tread of stairs
JP2007134226A (en) * 2005-11-11 2007-05-31 Daiken Trade & Ind Co Ltd Lighting device for reform use and its mounting structure
JP2008002080A (en) * 2006-06-20 2008-01-10 Naigai:Kk Stairs supporting structure
JP2010084342A (en) * 2008-09-29 2010-04-15 Daiken Corp Treadboard for soundproof staircase and soundproof staircase structure using the same

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