JP6725334B2 - High sound insulation stairs - Google Patents

High sound insulation stairs Download PDF

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JP6725334B2
JP6725334B2 JP2016121144A JP2016121144A JP6725334B2 JP 6725334 B2 JP6725334 B2 JP 6725334B2 JP 2016121144 A JP2016121144 A JP 2016121144A JP 2016121144 A JP2016121144 A JP 2016121144A JP 6725334 B2 JP6725334 B2 JP 6725334B2
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side plate
straight
wall
staircase
plate
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JP2017223094A (en
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光則 大野
光則 大野
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株式会社デイエムウッドラボ
株式会社ヤマシタ
大東建託株式会社
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本発明は、木造建築において施工される内階段に関し、特に、使用時における騒音の発生を可及的に抑制するとともに、階段室外への振動の伝達を効果的に遮断できる高遮音階段に関する。 The present invention relates to an inner staircase constructed in a wooden construction, and more particularly to a high sound insulation staircase capable of effectively suppressing noise generation during use and effectively blocking transmission of vibration to the outside of a staircase room.

小規模な(例えば、入居世帯数が4〜12戸程度の)二階建て賃貸用木造集合住宅には様々な形態があり、従来は、二階の入居世帯用の共同階段が建屋の外壁に設置されているタイプのものが主流であったが、近年では、二階の入居世帯用の玄関が一階に住戸別に設置され、それらの二階用の住戸別玄関が、一階の入居世帯用の住戸別玄関と交互に配列されるようなタイプのものも施工されている。 There are various forms of small-scale two-story wooden condominiums for rent (for example, the number of resident households is about 4 to 12), and conventionally, a shared staircase for resident households on the second floor is installed on the outer wall of the building. The mainstream type is the mainstream type, but in recent years, entrances for second-floor resident households have been installed on the first floor for each residential unit, and those second-floor entrances for each residential unit are on the first floor. There are also types that are arranged alternately with the entrance.

このタイプの集合住宅においては、二階の入居者は、一階の住戸別玄関とその奥の専用内階段を通って、二階の居室への出入りを行うことになるが、この内階段は、玄関が隣接する一階の住戸の居室と、界壁(集合住宅において各住戸の間を仕切る壁)一枚を隔てて隣接しているため、階段使用時の騒音や振動が問題となる。 In this type of housing complex, the occupants on the second floor will enter and exit the living room on the second floor through the entrance on the first floor and the internal stairs behind it. Are adjacent to each other with a boundary wall (a wall that separates each dwelling unit in an apartment house) separated from the living room of the dwelling unit on the first floor, which causes noise and vibration when using stairs.

より具体的には、木造住宅において施工される内階段は、昇降時の騒音や振動が他の部屋へ伝達されてしまうという問題があるところ、一戸建て住宅においては、通常、階段使用者は同居者等に限定されているため、階段昇降時に多少の騒音や振動が発生しても問題になることはないが、上記のような複数世帯が入居する木造集合住宅において、内階段の使用時に騒音や振動が発生すると、入居世帯間で問題が生じかねない。 More specifically, the inner stairs constructed in a wooden house have a problem that noise and vibration during ascending/descending are transmitted to other rooms.In a single-family house, however, stair users usually live together. However, even if some noise or vibration occurs when going up and down the stairs, it does not pose a problem, but in a wooden apartment house with multiple households such as the one above, there is no noise or noise when using the inner stairs. When vibrations occur, problems may occur among resident households.

実開平03−71029号公報Japanese Utility Model Laid-Open No. 03-71029 実開平05−28824号公報Japanese Utility Model Publication No. 05-28824 特開平11−159095号公報JP, 11-159095, A 特開2016−089415号公報JP, 2016-089415, A

階段使用時に生じる騒音や振動を低減するための方法として、段板と、これを支持する部材との間に、弾性材料からなる防振材を配置することが知られている(特許文献1〜3参照)。この場合、階段使用者が段板を踏み込んだ際に段板に作用する衝撃を、防振材を配置しない場合と比較して、ある程度吸収することができ、一定の範囲で騒音、振動の低減効果が期待できるが、上記のような複数世帯が入居する木造集合住宅における内階段を対象とする騒音振動対策としては、十分であるとは言い難い。 As a method for reducing noise and vibration generated when using stairs, it is known to dispose a vibration isolator made of an elastic material between a step plate and a member supporting the step plate (Patent Documents 1 to 1). 3). In this case, the impact that acts on the step plate when the stair user steps on the step plate can be absorbed to some extent compared to the case where no vibration isolator is arranged, and noise and vibration can be reduced within a certain range. Although an effect can be expected, it cannot be said to be sufficient as a noise and vibration countermeasure against the inner stairs in a wooden apartment house where a plurality of households move in as described above.

本発明は、このような従来技術における問題を解決しようとするものであって、使用時における騒音の発生を可及的に抑制するとともに、階段室外への振動の伝達を効果的に遮断できる高遮音階段を提供することを目的とする。 The present invention is intended to solve such a problem in the prior art, and suppresses the generation of noise during use as much as possible, and effectively cuts off the transmission of vibration to the outside of the staircase. The purpose is to provide soundproof stairs.

本発明に係る高遮音階段は、L字型に接合される二枚の廻り側板によって廻り段板の外側端部が支持される廻り段部と、平行に配置される二枚の直側板によって矩形段板の両端部がそれぞれ支持される直状部と、を有する階段において、階下側の床面上に、階段室の内壁と接触しない自立フレームが形成され、廻り側板及び廻り段板が、階段室の内壁から間隔を置いた位置で、内壁から独立して自立フレーム上に支持され、直側板の上端部又は下端部のいずれかが自立フレーム上に支持され、直側板及び矩形段板が、階段室の内壁から間隔を置いた位置で、内壁から独立して支持されていることを特徴としている。 The high sound insulation staircase according to the present invention is a rectangle formed by two turning side plates that are joined in an L-shape and whose outer end is supported by two turning side plates and two straight side plates that are arranged in parallel. In a staircase having a straight part in which both ends of the step plate are respectively supported, a self-supporting frame that does not contact the inner wall of the staircase is formed on the floor surface on the downstairs side, At a position spaced from the inner wall of the chamber, supported on the self-supporting frame independently of the inner wall, either the upper end or the lower end of the direct side plate is supported on the self-supporting frame, the direct side plate and the rectangular step plate, It is characterized by being supported independently from the inner wall at a position spaced from the inner wall of the staircase.

尚、直状部が、階下側の床面と廻り段部との間に形成される階下側直状部と、廻り段部と階上側の上段框との間に形成される階上側直状部とを含む高遮音階段においては、階下側直状部の直側板の上端部、及び、階上側直状部の直側板の下端部が自立フレーム上に支持されていることが好ましい。 In addition, the straight part is a downstairs straight part formed between the floor surface on the downstairs side and the surrounding step, and an upstairs straight part formed between the surrounding step and the upper frame of the upper floor. In the high sound insulation staircase including the section, it is preferable that the upper end of the straight plate of the downstairs straight portion and the lower end of the straight plate of the upstairs straight portion are supported on the self-supporting frame.

また、階下側直状部を構成する直側板の各下端部、階上側直状部を構成する直側板の各上端部、自立フレームのベースの下側、及び/又は、階段室の内壁の内部に、防振材が配置されていることが好ましい。 In addition, each lower end of the straight side plate that constitutes the downstairs straight portion, each upper end of the straight side plate that constitutes the upstairs straight portion, the lower side of the base of the self-supporting frame, and/or the inner wall of the staircase Further, it is preferable that a vibration damping material is arranged.

本発明に係る高遮音階段においては、すべての側板(廻り側板、直側板)及び段板(廻り段板、矩形段板)が、階段室の内壁から内側へ一定の間隔を置いた位置で、内壁と接触せず、内壁から独立した状態で支持されており、かつ、これらの側板及び段板を支持する自立フレームについても、内壁と接触しない状態となっているため、段板が荷重を受けた際に発生した振動が、界壁へ伝達されることを防止し、階段室外(界壁を隔てて隣接する隣室等)への振動の伝達を効果的に遮断することができる。 In the high sound insulation staircase according to the present invention, all side plates (surrounding side plate, straight side plate) and step plate (surrounding step plate, rectangular step plate), at a position with a constant distance from the inner wall of the staircase to the inside, It is supported in a state that it does not contact the inner wall and is independent of the inner wall, and the self-supporting frame that supports these side plates and step plates is also in a state where it does not contact the inner wall, so the step plates receive the load. It is possible to prevent the vibration generated at that time from being transmitted to the boundary wall, and effectively block the transmission of the vibration to the outside of the staircase (such as the adjacent room adjacent to the boundary wall).

図1は、本発明に係る高遮音階段において使用される自立フレーム1の平面図である。FIG. 1 is a plan view of a self-supporting frame 1 used in a high sound insulation staircase according to the present invention. 図2は、図1に示す自立フレーム1の斜視図である。FIG. 2 is a perspective view of the self-supporting frame 1 shown in FIG. 図3は、図1の自立フレーム1上に支持される側板11〜16の側面図である。FIG. 3 is a side view of the side plates 11 to 16 supported on the self-supporting frame 1 of FIG. 図4は、図1の自立フレーム1による廻り側板(上段)13、及び、廻り側板(下段)14の支持構造の説明図である。FIG. 4 is an explanatory view of a support structure of the rotating side plate (upper stage) 13 and the rotating side plate (lower stage) 14 by the self-supporting frame 1 of FIG. 図5は、図1の自立フレーム1による直側板(外側下段)15、及び、直側板(内側下段)16の支持構造の説明図である。FIG. 5 is an explanatory diagram of a support structure of the direct side plate (outer lower stage) 15 and the direct side plate (inner lower stage) 16 by the self-supporting frame 1 of FIG. 図6は、図1の自立フレーム1による直側板(外側上段)11、及び、直側板(内側上段)12の下端側の支持構造の説明図である。FIG. 6 is an explanatory diagram of a support structure on the lower end side of the direct side plate (outer upper stage) 11 and the direct side plate (inner upper stage) 12 by the self-supporting frame 1 of FIG. 図7は、直側板(外側上段)11、及び、直側板(内側上段)12の上端側の支持構造の説明図である。FIG. 7 is an explanatory diagram of a support structure on the upper end side of the direct side plate (outer upper stage) 11 and the direct side plate (inner upper stage) 12. 図8は、直側板(外側上段)11、直側板(内側上段)12、及び、段板21等の断面図である。FIG. 8 is a cross-sectional view of the straight side plate (outer upper stage) 11, the straight side plate (inner upper stage) 12, the step plate 21, and the like. 図9は、内壁7,8の断面図である。FIG. 9 is a sectional view of the inner walls 7 and 8.

以下、本発明に係る高遮音階段を実施するための形態について説明する。従来の木造建築における一般的な階段は、段板の両端を支持させる側板が、階段室の内壁(界壁等)に対して固定されていたが、本発明に係る高遮音階段においては、段板、及び、段板を支持する側板が、階段室の内壁から内側へ一定の間隔を置いた位置(内壁と接触しない位置)で、内壁から独立して支持されるように構成されており、段板が荷重を受けた際に発生する振動が、段板及び側板を介して内壁(界壁等)へ伝達されることを防止し、階段室外(界壁を隔てて隣接する隣室等)への振動、騒音の伝達を効果的に遮断できるようになっている。 Hereinafter, modes for carrying out the high sound insulation staircase according to the present invention will be described. In a general staircase in a conventional wooden construction, side plates supporting both ends of a stairway plate are fixed to an inner wall (boundary wall, etc.) of a staircase, but in the high sound insulation staircase according to the present invention, The plate and the side plate that supports the step plate are configured to be supported independently from the inner wall at a position (a position where the inner wall does not contact) at a constant distance from the inner wall of the staircase to the inside. The vibration generated when the step plate receives a load is prevented from being transmitted to the inner wall (boundary wall, etc.) via the step plate and the side plate, and to the outside of the staircase (adjacent room, etc. that is adjacent to the step wall). The transmission of vibration and noise can be effectively blocked.

具体的には、本発明に係る高遮音階段は、L字型に接合される二枚の廻り側板によって廻り段板の外側端部が支持される「廻り段部」と、間隔を置いて平行に配置される二枚の直側板によって矩形段板の両端部がそれぞれ支持される「直状部」とを有し、更に、直状部が、階下側の床面と廻り段部との間に形成される「階下側直状部」と、廻り段部と階上側の上段框との間に形成される「階上側直状部」とを含み、廻り段部において、廻り側板とその上に載置される廻り段板が、階下側の床面上に形成された櫓状の自立フレームによって内壁から独立して支持され、階下側直状部、及び、階上側直状部においても、直側板とその上に載置される矩形段板が自立フレームによって内壁から独立して支持される構造となっている。 Specifically, the high sound insulation staircase according to the present invention is parallel to the "turning step portion" in which the outer end of the turning step plate is supported by two turning side plates joined to each other in an L-shape with a gap. And a "straight portion" in which both end portions of the rectangular step plate are respectively supported by two straight side plates arranged in the above, and the straight portion is between the floor surface on the downstairs side and the surrounding step portion. And the "upper-side straight part" formed between the surrounding step and the upper-side frame of the upper floor, and the surrounding side plate and the upper part thereof in the surrounding step. The slab placed on the is independently supported from the inner wall by the turret-shaped self-supporting frame formed on the floor surface on the downstairs side, and also on the downstairs straight section and the upstairs straight section, The direct side plate and the rectangular step plate placed on the direct side plate are supported independently from the inner wall by the self-supporting frame.

図1は、側板及び段板を内壁から独立して支持するために階下側の床面上に形成される自立フレーム1の平面図であり、図2は、その斜視図である。これらの図に示すように、自立フレーム1は、ベース2a,2bと、五本の垂直な支柱(支柱(外側下段)3a、支柱(内側下段)3b、支柱(外側中段)3c、支柱(外側上段)3d、及び、支柱(内側上段)3e)と、隣接する支柱同士を連結して自立フレーム1の剛性を向上させる六本の連結材4a〜4fとによって構成されている。 FIG. 1 is a plan view of a self-supporting frame 1 formed on a floor surface on the downstairs side for independently supporting a side plate and a step plate from an inner wall, and FIG. 2 is a perspective view thereof. As shown in these figures, the self-supporting frame 1 includes bases 2a and 2b, five vertical columns (columns (outer lower stage) 3a, columns (lower inner stage) 3b, columns (outer middle stage) 3c, columns (outer side). The upper stage) 3d, the columns (upper side inner stage) 3e), and the six connecting members 4a to 4f that connect adjacent columns to each other to improve the rigidity of the self-supporting frame 1.

支柱(外側下段)3a、支柱(外側中段)3c、及び、支柱(外側上段)3dは、図1に示すように、階段室の内壁7(化粧板)から内側へ一定の間隔を置いた位置に配置されており、内壁7と接触しない状態となっている。また、支柱(内側下段)3b、及び、支柱(内側上段)3eも、内壁8(化粧板)から内側へ間隔を置いた位置に配置されており、内壁8と接触しない状態となっている。また、連結材4a〜4fの端部も、内壁7,8と接触しない状態となっている。 As shown in FIG. 1, the columns (lower outer stage) 3a, the columns (outer middle stage) 3c, and the columns (outer upper stage) 3d are located at a certain distance inward from the inner wall 7 (decorative plate) of the staircase. It is arranged in a state where it does not come into contact with the inner wall 7. Further, the support columns (inner lower stage) 3b and the support columns (inner upper stage) 3e are also disposed at positions spaced inward from the inner wall 8 (decorative plate), and are in a state of not contacting the inner wall 8. Further, the end portions of the connecting members 4a to 4f are also in a state of not contacting the inner walls 7 and 8.

尚、支柱(外側下段)3a、支柱(内側下段)3b、及び、支柱(内側上段)3eは、ベース2aの下方側から打ち込まれたビスによってベース2aに対して固定されており、支柱(外側中段)3c、及び、支柱(外側上段)3dは、ベース2bの下方側から打ち込まれたビスによってベース2bに対して固定されている。また、ベース2a及びベース2bは、上方側から打ち込まれたビスによって、設置面(廻り段部が形成される階下側の床面)上に固定されている。 The support pillar (lower outer step) 3a, the support pillar (lower inner step) 3b, and the support pillar (upper inner step) 3e are fixed to the base 2a by a screw driven from the lower side of the base 2a. The middle stage 3c and the support columns (outer upper stage) 3d are fixed to the base 2b by screws that are driven in from the lower side of the base 2b. Further, the base 2a and the base 2b are fixed on the installation surface (the floor surface on the downstairs side where the stepped portion is formed) by a screw driven from the upper side.

ベース2a及びベース2bの下側には、図2に示すように、防振ゴム6(例えば、厚さ10mmのシート状防振ゴム材)がそれぞれ配置されており、階段使用時に発生する振動が、自立フレーム1を介して床面に伝達されることを、効果的に抑制できるようになっている。 As shown in FIG. 2, anti-vibration rubbers 6 (for example, sheet-shaped anti-vibration rubber materials having a thickness of 10 mm) are arranged below the bases 2a and 2b, respectively. The transmission to the floor surface via the self-supporting frame 1 can be effectively suppressed.

図3は、自立フレーム1上に支持される側板の側面図である。より詳細には、図3(1)は直側板(外側上段)11の側面図、図3(2)は直側板(内側上段)12の側面図、図3(3)は廻り側板(上段)13の側面図、図3(4)は廻り側板(下段)14の側面図、図3(5)は直側板(外側下段)15(実線)、及び、直側板(内側下段)16(実線及び破線)の側面図である。図示されているように、いずれの側板においても、複数の水平段部17が形成されるとともに、一方の端部又は両端部に、係合突起18a〜18h又は係合段部19a,19bが形成されている。尚、図3(5)において破線で示すように、直側板(内側下段)16は、上端部の係合突起18hが、直側板(外側下段)15の上端部の係合突起18gよりも高さ寸法及び横幅寸法が大きく設定されている。 FIG. 3 is a side view of the side plate supported on the self-supporting frame 1. More specifically, FIG. 3(1) is a side view of the straight side plate (outer upper stage) 11, FIG. 3(2) is a side view of the straight side plate (inner upper stage) 12, and FIG. 3(3) is a rotating side plate (upper stage). 13 is a side view, FIG. 3(4) is a side view of the rotating side plate (lower stage) 14, FIG. 3(5) is a straight side plate (outer lower stage) 15 (solid line), and a straight side plate (inner lower stage) 16 (solid line and It is a side view (broken line). As illustrated, in any of the side plates, a plurality of horizontal step portions 17 are formed, and at one end portion or both end portions, engaging protrusions 18a to 18h or engaging step portions 19a, 19b are formed. Has been done. As shown by the broken line in FIG. 3(5), the engaging protrusion 18h at the upper end of the straight side plate (inner lower step) 16 is higher than the engaging protrusion 18g at the upper end of the direct side plate (outer lower step) 15. The width and width are set large.

図3に示す各側板11〜16は、図4〜図6に示すように、自立フレーム1上において、階段室の内壁7,8(図1参照)と接触しない位置で、内壁7,8から独立して支持されている。より具体的に説明すると、図4に示すように、廻り段部を構成する廻り側板(上段)13は、上方側の係合突起18cが自立フレーム1の支柱(外側上段)3dの上に載置され、下方側の係合突起18dが支柱(外側中段)3cの上に載置された状態で、上方から打ち込まれたビスによって自立フレーム1上に固定されている。 As shown in FIGS. 4 to 6, the side plates 11 to 16 shown in FIG. 3 are positioned on the self-supporting frame 1 so as not to come into contact with the inner walls 7 and 8 (see FIG. 1) of the staircase from the inner walls 7 and 8. Independently supported. More specifically, as shown in FIG. 4, in the turning side plate (upper step) 13 that constitutes the turning step portion, the upper engaging projection 18c is placed on the pillar (outer upper step) 3d of the self-supporting frame 1. The engaging projections 18d on the lower side are fixed on the self-supporting frame 1 by screws that are driven in from above in a state in which the engaging protrusions 18d on the lower side are placed on the columns (outer middle tier) 3c.

廻り側板(下段)14は、上方側の係合突起18eが、自立フレーム1の支柱(外側中段)3c及び廻り側板(上段)13の係合突起18dの上に載置され、下方側の係合突起18fが、支柱(外側下段)3aの上に載置され、上方から打ち込まれたビスによって自立フレーム1上に固定されている。 The upper side engagement protrusions 18e of the turning side plate (lower stage) 14 are placed on the support columns (outer middle stage) 3c of the self-supporting frame 1 and the engagement protrusions 18d of the turning side plate (upper stage) 13, and the lower side engagement protrusions 18e. The fitting projection 18f is placed on the column (outer lower stage) 3a, and is fixed on the self-supporting frame 1 by a screw driven from above.

このように、二枚の廻り側板(廻り側板(上段)13、及び、廻り側板(下段)14)は、L字型に接合された状態で自立フレーム1上に支持されている。尚、廻り側板(上段)13と廻り側板(下段)14の接合部の入隅部分には、図5に示すように、接合部を補強するため、補強材9(例えば、角材等)(廻り側板(上段)13、及び、廻り側板(下段)14の双方に対してビス止めされている)が当接されている。 As described above, the two surrounding side plates (the surrounding side plate (upper stage) 13 and the surrounding side plate (lower stage) 14) are supported on the self-supporting frame 1 in an L-shaped joined state. In addition, as shown in FIG. 5, a reinforcing material 9 (for example, a square bar) (surrounding member) is provided in the corner portion of the joint portion between the rotating side plate (upper stage) 13 and the rotating side plate (lower stage) 14 in order to reinforce the joint portion. The side plate (upper stage) 13 and the rotating side plate (lower stage) 14 are both screwed together.

階下側直状部を構成する直側板(外側下段)15は、図5に示すように、上方側の係合突起18gが自立フレーム1の支柱(外側下段)3a及び廻り側板(下段)14の係合突起18fの上に載置され、上方から打ち込まれたビスによって上端側が自立フレーム1上に固定されている。また、直側板(内側下段)16も同様に、内壁8(図1参照)から間隔を置いた位置において、上方側の係合突起18hが自立フレーム1の支柱(内側下段)3bの上に載置され、上方から打ち込まれたビスによって上端側が自立フレーム1上に固定されている。 As shown in FIG. 5, in the straight side plate (outer lower step) 15 that constitutes the downstairs-side straight portion, the upper engaging projections 18g have the pillar (outer lower step) 3a and the rotating side plate (lower step) 14 of the self-supporting frame 1. The upper end side is fixed on the self-supporting frame 1 by a screw that is placed on the engagement protrusion 18f and is driven from above. Similarly, the direct side plate (inner lower stage) 16 also has the upper engaging protrusion 18h mounted on the column (inner lower stage) 3b of the self-supporting frame 1 at a position spaced from the inner wall 8 (see FIG. 1). The upper end side is fixed on the self-supporting frame 1 by screws which are placed and driven from above.

尚、直側板(外側下段)15及び直側板(内側下段)16の各下端部は、防振ゴム6を介して床面上に固定(ビス止め)されている。 The lower ends of the direct side plate (outer lower stage) 15 and the direct side plate (inner lower stage) 16 are fixed (screwed) on the floor surface via a vibration-proof rubber 6.

階上側直状部を構成する直側板(外側上段)11は、図6に示すように、下方側の係合段部19aが自立フレーム1の支柱(外側上段)3d及び廻り側板(上段)13の係合突起18cの上に載置され、ビス止めされることによって下端側が自立フレーム1上に固定されている。直側板(内側上段)12も同様に、内壁8(図1参照)から間隔を置いた位置において、下方側の係合段部19bが自立フレーム1の支柱(内側上段)3eの上に載置され、ビス止めされることによって下端側が自立フレーム1上に固定されている。 As shown in FIG. 6, in the straight side plate (outer upper step) 11 that constitutes the upper floor straight portion, the lower engagement step 19a has the pillar (outer upper step) 3d and the turning side plate (upper step) 13 of the self-supporting frame 1. The lower end side is fixed on the self-supporting frame 1 by being mounted on the engaging projection 18c of FIG. Similarly, the direct side plate (inner upper step) 12 is also placed at a position spaced from the inner wall 8 (see FIG. 1) with the lower engaging step portion 19b placed on the column (inner upper step) 3e of the self-supporting frame 1. Then, the lower end side is fixed on the self-supporting frame 1 by being screwed.

尚、支柱(外側上段)3dの上端側部から直側板(外側上段)11の係合段部19aの側部にかけて、図示しない補強材(例えば、角材、金属プレート等)(支柱(外側上段)3d、係合突起18c、及び、係合段部19aに対してビス止めされている)が取り付けられている。また、支柱(内側上段)3eの上端側部から直側板(内側上段)12の係合段部19bの側部にかけても、図示しない補強材(支柱(内側上段)3e、及び、係合段部19bに対してビス止めされている)が取り付けられている。 In addition, from the upper end side portion of the support pillar (outer upper step) 3d to the side portion of the engaging step portion 19a of the straight side plate (outer upper step) 11, a reinforcing material (for example, square bar, metal plate, etc.) (support pillar (outer upper step)) not shown. 3d, the engaging protrusion 18c, and the engaging stepped portion 19a) are attached by screws. Further, even from the upper end side portion of the support column (inner upper stage) 3e to the side portion of the engagement step portion 19b of the direct side plate (inner upper stage) 12, a reinforcing material (support column (inner upper stage) 3e and engagement step portion not shown) is formed. 19b), which are screwed to each other, are attached.

直側板(外側上段)11及び直側板(内側上段)12の上方側の係合突起18a,18bは、図7に示すように、上段框の下側に予め形成しておいた框下段部20(例えば、上段框の下側の梁材の垂直面に角材をビス止めして形成される)の上に防振ゴム6を介して載置され、上方から打ち込まれたビスによって固定されている。 As shown in FIG. 7, the engaging projections 18a, 18b on the upper side of the direct side plate (outer upper stage) 11 and the direct side plate (inner upper stage) 12 are formed on the lower side of the upper stage frame in advance. (For example, it is formed by fixing a square member to the vertical surface of the lower beam member of the upper frame with screws) and is mounted via a vibration-proof rubber 6 and fixed by a screw driven from above. ..

階上側直状部において、段板21(矩形段板)は、図8に示すように、直側板(外側上段)11、及び、これに対向する直側板(内側上段)12の各水平段部17の上に、防振ゴム6を介して載置され、各側板11,12にビス止めされている。 In the upper floor straight portion, the step plate 21 (rectangular step plate) is, as shown in FIG. 8, each horizontal step part of the direct side plate (outer upper step) 11 and the straight side plate (inner upper step) 12 facing the step plate 21. It is mounted on 17 via a vibration-proof rubber 6, and is screwed to each side plate 11, 12.

尚、図8に示すように、各側板11,12及び段板21の両端部21a,21bと、内壁7,8との間には、それぞれ隙間Cが形成されており、各側板11,12と段板21は、内壁7,8と接触せず、独立した状態で支持されている。また、段板21の上面には、階段使用時における衝撃を吸収できる表面材22が貼着されている。更に、段板21の両端部21a,21bの上方には、隙間Cが隠れるように、内壁7,8に化粧側板23が取り付けられている。 As shown in FIG. 8, a gap C is formed between each of the side plates 11 and 12 and both end portions 21a and 21b of the step plate 21 and the inner walls 7 and 8, respectively. The step plate 21 does not contact the inner walls 7 and 8 and is supported in an independent state. Further, a surface material 22 capable of absorbing an impact when the stairs are used is attached to the upper surface of the step plate 21. Further, the decorative side plates 23 are attached to the inner walls 7 and 8 so that the gap C is hidden above the both ends 21a and 21b of the step plate 21.

また、図9に示すように内壁7,8を、二枚の石膏ボード25,26(例えば厚さ12.5mm)、及び、化粧ボード27によって構成し、石膏ボード25,26の間に制振材5を配置した場合には、遮音効果の更なる向上が期待できる。尚、この場合、制振材5としては、ブチルゴム系の樹脂を厚さ0.5mm程度のシート状に成形したもの(例えば、イイダ産業株式会社製 XETORO(登録商標)NV−αIIなど)を用いることが好ましい。 Further, as shown in FIG. 9, the inner walls 7 and 8 are composed of two plaster boards 25 and 26 (for example, a thickness of 12.5 mm) and a decorative board 27, and vibration damping is performed between the plaster boards 25 and 26. When the material 5 is arranged, further improvement of the sound insulation effect can be expected. In this case, as the damping material 5, a butyl rubber resin molded into a sheet having a thickness of about 0.5 mm (for example, XETORO (registered trademark) NV-αII manufactured by Iida Sangyo Co., Ltd.) is used. It is preferable.

階下側直状部においても、図8に示す階上側直状部と同様の態様で、段板(矩形段板)が支持されている。つまり、図5に示す直側板(外側下段)15と、これに対向する直側板(内側下段)16)の各水平段部の上に、防振ゴムを介して段板が載置され、内壁7,8(図1参照)との間にそれぞれ隙間が形成され、段板が内壁7,8と接触しない状態となっている。 Also in the downstairs straight portion, the step plate (rectangular step plate) is supported in the same manner as the upstairs straight portion shown in FIG. That is, the step plates are placed on the horizontal step portions of the direct side plate (outer lower step) 15 and the direct side plates (inner lower step) 16 facing each other shown in FIG. A gap is formed between the step plates and the inner walls 7 and 8 (see FIG. 1).

また、廻り段部においても、図8に示す階上側直状部と同様の態様で、段板(廻り段板)の外側端部が支持されている。つまり、図5に示す廻り側板(上段)13と、廻り側板(下段)14の各水平段部の上に、防振ゴムを介して段板の外側端部が載置され、内壁7(図1参照)との間にそれぞれ隙間が形成され、段板の外側端部が内壁7と接触しない状態となっている。また、段板の内側端部についても内壁8(図1参照)と接触しない状態で支持されている。 Further, also in the turning step portion, the outer end portion of the step plate (turning step plate) is supported in the same manner as the upper story straight portion shown in FIG. That is, the outer end of the step plate is placed on each horizontal step of the turning side plate (upper stage) 13 and the turning side plate (lower stage) 14 shown in FIG. (See 1), a gap is formed between them and the outer end of the step plate is not in contact with the inner wall 7. Further, the inner end portion of the step plate is also supported without contacting the inner wall 8 (see FIG. 1).

以上に説明したように、本発明に係る高遮音階段においては、すべての側板11〜16及び段板(矩形段板及び廻り段板)が、階段室の内壁7,8から内側へ一定の間隔を置いた位置で、内壁7,8と接触せず、内壁7,8から独立した状態で支持されており、かつ、これらの側板11〜16及び段板を支持する自立フレーム1についても、内壁7,8と接触しない状態となっている。 As described above, in the high sound insulation staircase according to the present invention, all the side plates 11 to 16 and the step plates (rectangular step plates and surrounding step plates) are spaced from the inner walls 7 and 8 of the staircase by a constant distance. The inner wall 7, 8 which is supported independently of the inner walls 7, 8 without contacting the inner walls 7, 8 and which also supports the side plates 11 to 16 and the step plates. It is in a state where it does not contact with 7 and 8.

このため、階段使用時において段板が荷重を受けた際に発生する振動、騒音が、段板及び側板を介して内壁(界壁等)へ伝達されることを防止し、階段室外(界壁を隔てて隣接する隣室等)への振動、騒音の伝達を効果的に遮断することができる。 For this reason, it is possible to prevent vibration and noise generated when the stairs are subjected to a load during use of the stairs from being transmitted to the inner wall (boundary wall, etc.) through the stairs and the side plates, and to prevent the stairs outside (the boundary wall It is possible to effectively block the transmission of vibrations and noises to the adjacent room adjacent to each other.

尚、上記実施形態においては、図9において、内壁7,8の内部に制振シート5が配置される例が示され、また、図2、図5、図7において、ベース2a,2bの下側、直側板(外側下段)15及び直側板(内側下段)16の下側、直側板(外側上段)11及び直側板(内側上段)12の上端部と框下段部20との間などに防振ゴム6が配置される例が示されているが、これらの制振シート5、或いは、防振ゴム6としては、防音性、防振性、或いは、遮音性を有する防振材であれば、どのようなものを用いることもできる。 Note that, in the above embodiment, an example in which the damping sheet 5 is arranged inside the inner walls 7 and 8 is shown in FIG. 9, and below the bases 2a and 2b in FIGS. 2, 5 and 7. Side, the direct side plate (outer lower step) 15 and the lower side of the direct side plate (inner lower step) 16, the upper side of the direct side plate (outer upper step) 11 and the direct side plate (inner upper step) 12 and the frame lower step portion 20. Although the example in which the vibrating rubber 6 is arranged is shown, the vibration damping sheet 5 or the vibration damping rubber 6 may be any vibration damping material having soundproofing, vibrationproofing, or sound insulating properties. , Anything can be used.

1:自立フレーム、
2a,2b:ベース、
3a:支柱(外側下段)、
3b:支柱(内側下段)、
3c:支柱(外側中段)、
3d:支柱(外側上段)、
3e:支柱(内側上段)、
4a〜4f:連結材、
5:制振シート、
6:防振ゴム、
7,8:内壁、
9:補強材、
11:直側板(外側上段)、
12:直側板(内側上段)、
13:廻り側板(上段)、
14:廻り側板(下段)、
15:直側板(外側下段)、
16:直側板(内側下段)、
17:水平段部、
18a〜18h:係合突起、
19a,19b:係合段部、
20:框下段部、
21:段板、
21a,21b:端部、
22:表面材、
23:化粧側板、
25,26:石膏ボード、
27:化粧ボード、
C:隙間、
1: Freestanding frame,
2a, 2b: base,
3a: prop (outer lower stage),
3b: support (inner lower stage),
3c: a column (outer middle stage),
3d: stanchion (outer upper stage),
3e: prop (upper inner stage),
4a-4f: connecting material,
5: damping sheet,
6: anti-vibration rubber,
7, 8: inner wall,
9: Reinforcement material,
11: Direct side plate (outer upper stage),
12: Direct side plate (inner upper stage),
13: Side plate (upper),
14: Surrounding side plate (lower),
15: direct side plate (outer lower stage),
16: Direct side plate (inner lower stage),
17: horizontal step,
18a to 18h: engagement protrusions,
19a, 19b: engagement step,
20: Lower part of the frame,
21: corrugated board,
21a, 21b: ends,
22: surface material,
23: decorative side plate,
25 and 26: gypsum board,
27: Makeup board,
C: gap,

Claims (5)

L字型に接合される二枚の廻り側板によって廻り段板の外側端部が支持される廻り段部と、平行に配置される二枚の直側板によって矩形段板の両端部がそれぞれ支持される直状部と、を有する木造建築の階段室内に設置される内階段において、
廻り段部における階下側の床面上に、階段室の内壁と接触しない自立フレームが階段室の内壁から内側へ間隔を置いた位置に形成され、
廻り側板及び廻り段板が、階段室の内壁から間隔を置いた位置で、内壁から独立して自立フレーム上に支持され、
直側板の上端部又は下端部のいずれかが、廻り段部の自立フレーム上に支持され、直側板及び矩形段板が、階段室の内壁から間隔を置いた位置で、内壁から独立して支持されていることを特徴とする高遮音階段。
A turning step portion in which the outer end portion of the turning step plate is supported by two turning side plates joined in an L shape, and both ends of the rectangular step plate are respectively supported by two straight side plates arranged in parallel. In an inner staircase installed in a staircase room of a wooden building having a straight section,
On the floor surface on the downstairs side in the surrounding steps, a self-supporting frame that does not contact the inner wall of the staircase is formed at a position spaced inward from the inner wall of the staircase ,
The surrounding side plate and the surrounding step plate are supported on the self-supporting frame independently of the inner wall at a position spaced from the inner wall of the staircase,
Either the upper end or the lower end of the direct side plate is supported on the self-supporting frame of the surrounding step part, and the direct side plate and the rectangular step plate are independently supported from the inner wall at a position spaced from the inner wall of the staircase. High sound insulation stairs characterized by being
直状部が、階下側の床面と廻り段部との間に形成される階下側直状部と、廻り段部と階上側の上段框との間に形成される階上側直状部とを含み、
階下側直状部の直側板の上端部、及び、階上側直状部の直側板の下端部が自立フレーム上に支持されていることを特徴とする請求項1に記載の高遮音階段。
The straight portion, the downstairs straight portion formed between the floor surface on the downstairs side and the surrounding step portion, and the upper floor straight portion formed between the surrounding step portion and the upper deck of the upper floor. Including
The high sound insulation staircase according to claim 1, wherein the upper end of the straight side plate of the downstairs straight section and the lower end of the straight side plate of the upstairs straight section are supported on the self-supporting frame.
階下側直状部を構成する直側板の各下端部、及び、階上側直状部を構成する直側板の各上端部に、防振材が配置されていることを特徴とする、請求項2に記載の高遮音階段。 The vibration-proof material is arranged at each lower end portion of the straight side plate that constitutes the downstairs-side straight portion, and at each upper end portion of the straight side plate that constitutes the upstairs-side straight portion. High sound insulation stairs described in. 自立フレームのベースの下側に、防振材が配置されていることを特徴とする、請求項1〜3のいずれかに記載の高遮音階段。 The high sound insulation stairs according to any one of claims 1 to 3, wherein a vibration-proof material is arranged below the base of the self-supporting frame. 階段室の内壁の内部に、防振材が配置されていることを特徴とする、請求項1〜4のいずれかに記載の高遮音階段。 The high sound insulation stairs according to any one of claims 1 to 4, wherein a vibration damping material is arranged inside the inner wall of the staircase.
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