JP4430438B2

JP4430438B2 - Strip stairs

Info

Publication number: JP4430438B2
Application number: JP2004084782A
Authority: JP
Inventors: 政良根沢
Original assignee: Misawa Homes Co Ltd
Current assignee: Misawa Homes Co Ltd
Priority date: 2004-03-23
Filing date: 2004-03-23
Publication date: 2010-03-10
Anticipated expiration: 2024-03-23
Also published as: JP2005273191A

Description

本発明は、上下階に渡って斜めに設置されるささら桁と、このささら桁の長手方向に所定間隔で設けられた段板支持部材と、この段板支持部材に支持された複数の段板と、前記ささら桁の四周を覆う桁カバーとを備えたストリップ階段に関する。 The present invention relates to a saddle girder installed obliquely across the upper and lower floors, a corrugated plate support member provided at a predetermined interval in the longitudinal direction of the corrugated beam, and a plurality of corrugated plates supported by the corrugated plate support member And a strip staircase provided with a girder cover that covers four rounds of the sasara girder.

建物の室内に設けられるストリップ階段が知られている。このストリップ階段は、２枚のささら桁に複数枚の段板を取り付け、これらの段板に手すりを取り付けて構成されている。段板は、ささら桁の上面に釘打ち等により取り付けられた、例えば三角形状の段板支持部材に取り付けられている（例えば特許文献１参照）。 There is a known strip staircase in the building. This strip staircase is constituted by attaching a plurality of step plates to two slabs and attaching handrails to these step plates. The corrugated board is attached to, for example, a triangular corrugated board support member that is attached to the upper surface of the spar girders by nailing or the like (see, for example, Patent Document 1).

ところが、前記特許文献１では、２枚のささら桁、複数枚の段板および段板支持部材をそれぞれ別個に製作し、それらを組み立ててストリップ階段を完成させているため、製作の手間が多くかかり、また、段板支持部材の取り付けに多くの手間がかかる。そのため、段板支持部材を、精度よく所定位置に取り付けてささら桁と一体化させることが容易ではないという課題がある。 However, in the above-mentioned patent document 1, since two spar girders, a plurality of step plates and a step plate supporting member are separately manufactured and assembled to complete the strip staircase, it takes a lot of time and effort. In addition, it takes a lot of labor to attach the corrugated plate support member. Therefore, there is a problem that it is not easy to attach the corrugated plate support member at a predetermined position with high precision and to integrate it with the spar.

そこで、本出願人は、特願２００３−３７６５５６号公報に記載のように、ささら桁と段板支持部材とを、同一材料から切り出し、一体物として形成することによって、容易に製作できるとともに、ささら桁と段板支持部材との位置を精度よく決めることができ、ささら桁と段板支持部材とを容易に一体化できるストリップ階段を提供した。 Therefore, as described in Japanese Patent Application No. 2003-376556, the present applicant can easily manufacture the sagittal girder and the corrugated plate support member by cutting them from the same material and forming them as a single body. A strip staircase is provided in which the positions of the girders and the step plate support members can be determined with high accuracy, and the sacrificial girders and the step plate support members can be easily integrated.

これは、図１３に示すような構造のものである。すなわち、このストリップ階段１は、登り方向に向かって右側および左側の左右２枚のささら桁１０、１１と、これらのささら桁１０、１１の上面に、所定間隔で設けられた複数の段板支持部２０と、この段板支持部２０に取り付けられた複数枚の段板３０とを主体として構成されている。
そして、ささら桁は、図１４に示すように、内側桁部材１２と外側桁部材１３との２枚を貼り合わせた後、それぞれの外側にサイドパッキン１４、１５を貼り合わせ、それらを外装部材である桁カバー１６で覆って形成されている。
なお、前記段板３０は、図１３に示すように、所定厚さの合板等で形成されており、その裏面には所定間隔をあけて、２個の角柱３１がその長手方向を段板３０の幅方向に沿わせて互いに平行に取り付けられている。
これら角柱３１は、前記内側桁部材１２と外側桁部材１３との高さの差によって構成されるブロック部２２の高さ寸法よりわずかに小さな寸法に形成されており、段板支持部材２０と係合可能な形状となっている。
また、各内側桁部材１２の段板支持部１２Ｂ、および外側桁部材１３の段板支持部１３Ｂのすべてにも、外装部材であるカバー１７が被せられるようになっている。 This has a structure as shown in FIG. In other words, the strip staircase 1 is composed of two right and left right-hand and left-handed roof beams 10 and 11 in the ascending direction, and a plurality of step plate supports provided on the upper surfaces of the sheath beams 10 and 11 at predetermined intervals. The unit 20 and a plurality of step plates 30 attached to the step plate support unit 20 are mainly configured.
Then, as shown in FIG. 14, after the two pieces of the inner girder member 12 and the outer girder member 13 are bonded together, the side seals 14 and 15 are bonded to the outer sides, and the outer girder is used as an exterior member. It is formed so as to be covered with a certain girder cover 16.
As shown in FIG. 13, the step plate 30 is formed of a plywood or the like having a predetermined thickness, and two prisms 31 are arranged in the longitudinal direction with a predetermined interval on the back surface thereof. Are attached in parallel to each other along the width direction.
These prisms 31 are formed to have a dimension slightly smaller than the height dimension of the block portion 22 constituted by the difference in height between the inner girder member 12 and the outer girder member 13. The shape is compatible.
Moreover, the cover 17 which is an exterior member is covered also on the step board support part 12B of each inner girder member 12, and the step board support part 13B of the outer girder member 13.

このような構造のストリップ階段１においては、図１５に示すように、２枚のささら桁１０、１１は、上部の取り付け部１２Ｄ、１３Ｄが上受け材２５で連結されるとともに、その上受け材２５を被取り付け部５０に釘打ち等で取り付けて固定されている。
また、２枚のささら桁１０、１１の下部の係合溝１２Ｅ、１３Ｅは、室内Ａの床６０の所定位置に固定された下受け材２６に係合し、かつ釘打ち等により固定されている。 In the strip staircase 1 having such a structure, as shown in FIG. 15, the two spar 10 and 11 are connected to the upper mounting portions 12D and 13D by the upper support member 25, and the upper support member. 25 is attached and fixed to the attached portion 50 by nailing or the like.
Further, the engaging grooves 12E and 13E at the bottom of the two spar 10 and 11 are engaged with the lower receiving member 26 fixed at a predetermined position of the floor 60 in the room A and fixed by nailing or the like. Yes.

一方、桁カバー１６は、合成樹脂、例えばオレフィン製シートを合板に接着して形成された複合合板であるＷ_S（木質シリーズ）オレフィン合板で形成され、図１４に示すように、内側桁部材１２、外側桁部材１３およびサイドパッキン１４、１５を覆ったとき、断面略コ字形になっており、ささら桁１０、１１の形状に合わせて加工して被せたものである。また、この桁カバー１６の表面には、前記段板支持部２０を挿通可能とする複数の穴部１６Ａがあけられている。
特開平１１−３０３２１６号公報 On the other hand, the girder cover 16 is formed of _WS (woody series) olefin plywood, which is a composite plywood formed by bonding a synthetic resin, for example, an olefin sheet to the plywood, and as shown in FIG. When the outer girder member 13 and the side packings 14 and 15 are covered, the cross-section is substantially U-shaped, and the outer girder member 13 and the side packings 14 and 15 are processed and covered in accordance with the shape of the spar 10 and 11. In addition, a plurality of holes 16 A are formed on the surface of the girder cover 16 so that the corrugated plate support portion 20 can be inserted therethrough.
Japanese Patent Laid-Open No. 11-303216

ところで、上記のような構造のストリップ階段１では、前記桁カバー１６は、内側桁部材１２、外側桁部材１３およびサイドパッキン１４、１５を覆ったとき、断面略コ字形になっており、ささら桁１０、１１の全体を覆う構造ではなかった。このため、例えば、設置されたストリップ階段１を裏側から覗くと、ささら桁１０、１１の底面が露出することになり、見映えが良くないという問題があった。 By the way, in the strip staircase 1 having the above structure, the girder cover 16 has a substantially U-shaped cross section when it covers the inner girder member 12, the outer girder member 13 and the side packings 14 and 15, It was not the structure which covers the whole of 10 and 11. For this reason, for example, when the installed strip staircase 1 is viewed from the back side, the bottom surfaces of the spar 10 and 11 are exposed, and there is a problem that the appearance is not good.

なお、前記断面略コ字形の桁カバー１６に代えて、ささら桁１０の四周を覆うような形態の桁カバー１６ａとすれば、前述した問題を解決することができるが、図１６に示すように、床面６０に不陸などがあると、桁カバー１６ａの底面全体が面に接する形態となるため、不陸の段差分だけ桁カバー１６ａの前面が浮いてしまい、この桁カバー１６ａの床側端部と床面６０との間にすき間Ｓが形成されてしまう。このため、ストリップ階段の下端部分の納まりが悪くなり、きれいに仕上げることができなかった。 Note that the above-described problem can be solved by replacing the girder cover 16 having a substantially U-shaped cross section with the girder cover 16a configured to cover the four circumferences of the spar girder 10, but as shown in FIG. If there is unevenness on the floor surface 60, the entire bottom surface of the girder cover 16a comes into contact with the surface, so that the front surface of the girder cover 16a floats by the unevenness level, and the floor side of this girder cover 16a A gap S is formed between the end portion and the floor surface 60. For this reason, the lower end of the strip staircase was poorly fit and could not be finished cleanly.

本発明は、ささら桁四周を覆う形態の桁カバーを採用してストリップ階段の見映えを良くするとともに、桁カバーの一部の床側端部を、床面に対して端縁のみが接する形態とすることで、床面に多少の不陸があっても、桁カバーと床面との間にすき間が形成されずに、見映えの良い仕上がりができるストリップ階段を提供することを目的とする。 The present invention adopts a girder cover that covers the four rounds of the girder so as to improve the appearance of the strip staircase, and has a configuration in which only the edge of the floor side end part of the girder cover is in contact with the floor surface. Therefore, even if there is some unevenness on the floor, the purpose is to provide a strip staircase that can be finished with a good appearance without forming a gap between the girder cover and the floor. .

請求項１記載の発明は、上下階に渡って斜めに設置するささら桁１０、１１と、このささら桁１０、１１の長手方向に所定間隔で設けた段板支持部材２０と、この段板支持部材２０で支持した複数の段板３０と、前記ささら桁１０、１１の四周を覆う桁カバー１８とを備えたストリップ階段１において、
前記ささら桁カバー１８を、ささら桁上面を覆う天面カバー部１８Ｂと、ささら桁側面を覆う側面カバー部１８Ｃと、ささら桁下面を覆う底面カバー部１８Ｄとから構成して、
これら各カバー部の床側端部１９を、床面６０に接する形態で斜めにカットして形成し、しかも底面カバー部１８Ｄの床側端部１９Ｄを床面６０に対して端縁のみが接する形態で斜めにカットしていることを前記課題の解決手段とした。 The invention as set forth in claim 1 is characterized in that the countersinks 10 and 11 installed obliquely across the upper and lower floors, the corrugated board support member 20 provided at predetermined intervals in the longitudinal direction of the countersinks 10 and 11, and the corrugated board support In the strip staircase 1 comprising a plurality of step plates 30 supported by the member 20 and a girder cover 18 covering the four circumferences of the spar 10 and 11,
The spar girder cover 18 includes a top cover part 18B that covers the top surface of the spar girder, a side cover part 18C that covers the side surface of the spar girder, and a bottom surface cover part 18D that covers the bottom surface of the spar girder.
The floor-side end portions 19 of the respective cover portions are formed by being cut obliquely so as to be in contact with the floor surface 60, and the floor-side end portion 19D of the bottom surface cover portion 18D is in contact with the floor surface 60 only at the edge. The means for solving the above-mentioned problem is that the shape is cut obliquely.

請求項１記載の発明によれば、底面カバー部１８Ｄの床側端部１９Ｄを、床面６０に対して端縁のみが接する形態に斜めにカットすることによって、桁カバー１８の底面カバー部１８Ｄが縁部のみで床面に接し、桁カバー１８の天面カバー部１８Ｂを前側に倒して床面６０と接しさせることができ、床面６０の不陸を吸収して、不陸によって生じる段差部分のすき間を隠すことができる。
また、この桁カバー１８は、天面カバー１８Ｂ、側面カバー１８Ｃ、底面カバー１８Ｄによってささら桁１０、１１の四周を覆うため、ストリップ階段１全体の見映えを良くすることができる。 According to the first aspect of the present invention, the floor side end portion 19D of the bottom surface cover portion 18D is obliquely cut into a form in which only the edge contacts the floor surface 60, whereby the bottom surface cover portion 18D of the girder cover 18 is obtained. Can be brought into contact with the floor surface only at the edge portion, and the top cover portion 18B of the girder cover 18 can be tilted forward and brought into contact with the floor surface 60. The gap between the parts can be hidden.
Further, since this girder cover 18 covers the four rounds of the spar 10 and 11 by the top cover 18B, the side cover 18C, and the bottom cover 18D, the appearance of the entire strip staircase 1 can be improved.

請求項２記載の発明は、桁カバー１８を構成する各カバー部を、折り部Ｄを介して連結して構成し、かつ、桁カバー１８の折り部Ｄには、折り部Ｄを挟んで両側に、折り部Ｄに所定の厚さを残して厚さ方向の一方側から他方側に向かって４５°の角度でカットしたＶカット部Ｋを形成していることを前記課題の解決手段とした。 According to the second aspect of the present invention, the cover parts constituting the girder cover 18 are connected via the folding part D, and the folding part D of the girder cover 18 has both sides sandwiching the folding part D. In addition, the V-cut portion K that is cut at an angle of 45 ° from one side in the thickness direction to the other side while leaving a predetermined thickness in the folded portion D is defined as means for solving the above-described problem. .

請求項２記載の発明によれば、前記Ｖカット部Ｋに沿って、折り部Ｄを折り曲げるとほぼ９０°に折り曲げて各カバー部を組み付けることができ、また、この桁カバー１８がある程度の厚みを有していても、容易に折り曲げてささら桁１０、１１の四周を覆うことができる。 According to the second aspect of the present invention, when the folded portion D is folded along the V-cut portion K, each cover portion can be assembled by being folded at approximately 90 °, and the girder cover 18 has a certain thickness. Even if it has it, it can be easily bent and the four rounds of the spar 10 and 11 can be covered.

請求項３記載の発明は、桁カバー１８の天面カバー部１８Ｂに、段板支持部材２０を挿通可能とする複数の穴部１８Ａを形成していることを前記課題の解決手段とした。 According to the third aspect of the present invention, the means for solving the above-described problem is that a plurality of hole portions 18A through which the step plate support member 20 can be inserted are formed in the top surface cover portion 18B of the girder cover 18.

請求項３記載の発明によれば、段板支持部材２０と穴部１８Ａを挿通させるだけで、この桁カバー１８をささら桁１０、１１に被せる際の位置決めがなされ、この天面カバー部１８Ｂから順々に各カバー部を被せていって、ささら桁１０、１１の四周を覆うことができる。 According to the third aspect of the present invention, positioning is performed when the girder cover 18 is placed on the spar 10 and 11 simply by inserting the step plate support member 20 and the hole 18A, and from the top cover portion 18B. It is possible to cover the four rounds of the spar 10 and 11 by covering each cover part one after another.

請求項４記載の発明では、桁カバー１８が、合成樹脂製シートを合板に接着して形成された複合合板であることを前記課題の解決手段とした。 In the invention according to claim 4, the girder cover 18 is a composite plywood formed by bonding a synthetic resin sheet to a plywood.

請求項４記載の発明によれば、合成樹脂製シートによって耐水性および耐久性に優れ、また、合成樹脂製シートを残して合板を４５°のＶカット加工ができる。 According to the invention described in claim 4, the synthetic resin sheet is excellent in water resistance and durability, and the plywood can be V-cut processed at 45 ° while leaving the synthetic resin sheet.

請求項１記載の発明によれば、底面カバー部１８Ｄの床側端部１９Ｄを、床面６０に対して端縁のみが接する形態に斜めにカットすることによって、桁カバー１８の底面カバー部１８Ｄが縁部のみで床面に接し、桁カバー１８の天面カバー部１８Ｂを前側に倒して床面６０と接しさせることができ、床面６０の不陸を吸収して、不陸によって生じる段差部分のすき間を隠すことができる。
また、この桁カバー１８は、天面カバー１８Ｂ、側面カバー１８Ｃ、底面カバー１８Ｄによってささら桁１０、１１の四周を覆うため、外観に優れた見映えのよい仕上がりとなる。 According to the first aspect of the present invention, the floor side end portion 19D of the bottom surface cover portion 18D is obliquely cut into a form in which only the edge contacts the floor surface 60, whereby the bottom surface cover portion 18D of the girder cover 18 is obtained. Can be brought into contact with the floor surface only at the edge portion, and the top cover portion 18B of the girder cover 18 can be tilted forward and brought into contact with the floor surface 60. The gap between the parts can be hidden.
Further, since the girder cover 18 covers the four rounds of the spar 10 and 11 with the top cover 18B, the side cover 18C, and the bottom cover 18D, the finish is excellent in appearance and good appearance.

請求項２記載の発明によれば、Ｖカット部Ｋに沿って、折り部Ｄを折り曲げると、ほぼ９０°に折り曲げて各カバー部を組み付けることができ、この桁カバー１８がある程度の厚みを有していても、容易に折り曲げてささら桁１０、１１の四周を覆うことができるので、外観に優れた見映えの良い仕上がりとなる。 According to the second aspect of the present invention, when the folded portion D is folded along the V-cut portion K, each cover portion can be assembled by being folded at approximately 90 °, and the girder cover 18 has a certain thickness. Even if it is, it can be easily bent and the four rounds of the spar 10 and 11 can be covered, resulting in an excellent appearance with an excellent appearance.

請求項３記載の発明によれば、段板支持部材２０と穴部１８Ａを挿通させるだけで、この桁カバー１８をささら桁１０、１１に被せる際の位置決めがなされ、この天面カバー部１８Ｂから順々に桁カバー１８を被せていくことによって、桁カバー１８でささら桁１０、１１の四周を覆うことができるので、外観に優れた見映えの良い仕上がりとなる。 According to the third aspect of the present invention, positioning is performed when the girder cover 18 is placed on the spar 10 and 11 simply by inserting the step plate support member 20 and the hole 18A, and from the top cover portion 18B. By sequentially covering the girder cover 18, the girder cover 18 can cover the four rounds of the girder 10 and 11, so that the appearance is excellent with a good appearance.

請求項４記載の発明によれば、桁カバー１８が、合成樹脂製シートを合板に接着して形成した複合合板であることから、耐水性および耐久性に優れるとともに、合成樹脂製シートを残して合板を４５°のＶカット加工ができるので、外観にも優れたストリップ階段１とすることができる。 According to the invention of claim 4, since the girder cover 18 is a composite plywood formed by adhering a synthetic resin sheet to a plywood, it is excellent in water resistance and durability, and the synthetic resin sheet is left. Since the plywood can be V-cut at 45 °, the strip staircase 1 having an excellent appearance can be obtained.

以下、図面を参照して、本発明に係るストリップ階段１の実施の形態を詳細に説明する。なお、本実施の形態のストリップ階段１については、前記特願２００３−３７６５５６号公報に記載されたストリップ階段１と同様の構成部分があるため、説明の便宜上、構成が同じ部分に関しては、同様の符号を用い、構成の異なる部分に関しては、異なる符合を用いて説明する。 Hereinafter, an embodiment of strip staircase 1 according to the present invention will be described in detail with reference to the drawings. The strip staircase 1 according to the present embodiment has the same components as the strip staircase 1 described in Japanese Patent Application No. 2003-376556. Therefore, for the sake of convenience of explanation, Parts having different configurations will be described using different reference numerals.

本実施の形態のストリップ階段１は、図１に示すように、上下階に渡って斜めに設置されるささら桁１０、１１と、このささら桁１０、１１の長手方向に所定間隔で設けられた段板支持部材２０と、この段板支持部材２０に支持された複数の段板３０と、前記ささら桁１０、１１の四周を覆う桁カバー１８とを主体として構成されている。 As shown in FIG. 1, the strip staircase 1 according to the present embodiment is provided with spar 10 and 11 installed diagonally across the upper and lower floors, and at a predetermined interval in the longitudinal direction of the spar 10 and 11. The main component is a step plate support member 20, a plurality of step plates 30 supported by the step plate support member 20, and a girder cover 18 covering the four circumferences of the spar 10 and 11.

前記ささら桁１０、１１は、登り方向に向かって右側、および左側の左右２枚のささら桁１０、１１が用いられ、左右勝手違いに形成されているのみで、構成はほぼ同じなので、以下には右側のささら桁１０で詳細を説明する。 As the said spar 10 and 11, the right and left two spars 10 and 11 on the right and left sides in the ascending direction are used, and the configuration is substantially the same except that they are formed in the left and right sides. Will be described in detail in the right side spar 10.

前記ささら桁１０は、図２に示すように、内側桁部材１２と外側桁部材１３との２枚を貼り合わせた後、それぞれの外側にサイドパッキン１４、１５を貼り合わせ、それらを外装部材である桁カバー１８で覆って形成される。 As shown in FIG. 2, after the two pieces of the inner girder member 12 and the outer girder member 13 are bonded together, the side beams 10 and 15 are bonded to the outer sides of the spar girders 10, and the outer packing members are used as exterior members. It is formed by being covered with a certain girder cover 18.

内側桁部材１２は、図３に示すように、それぞれ、本体部１２Ａと、この本体部１２Ａと一体的に形成された複数の段板支持部１２Ｂとを含み形成されている。これらの本体部１２Ａおよび段板支持部１２Ｂは、例えば、所定厚さの合板を、ツールホルダー１０１に取り付けられた鋸刃等の工具１００をＮＣ制御等により加工する機械加工により一体的に切り出して形成されている。 As shown in FIG. 3, each of the inner girder members 12 includes a main body portion 12A and a plurality of step plate support portions 12B formed integrally with the main body portion 12A. The main body portion 12A and the corrugated plate support portion 12B are formed by, for example, integrally cutting a plywood having a predetermined thickness by machining for machining a tool 100 such as a saw blade attached to the tool holder 101 by NC control or the like. Is formed.

段板支持部１２Ｂは、例えば６箇所にわたって設けられている。また、内側桁部材１２の上端部には取り付け部１２Ｄが形成され、この取り付け部１２Ｄには、図４に示すように、上受け材２５が取り付けられるようになっている。さらに、内側桁部材１２の下端部には係合溝１２Ｅが形成され、この係合溝１２Ｅは、下受け材２６と嵌合可能となっている。このような取り付け部１２Ｄ、係合溝１２Ｅも、本体部１２Ａおよび段板支持部１２Ｂを作る際に、ＮＣ加工等の機械加工により一体的に切り出して形成されている。 The corrugated board support part 12B is provided over six places, for example. Further, an attachment portion 12D is formed at the upper end of the inner girder member 12, and an upper receiving member 25 is attached to the attachment portion 12D as shown in FIG. Further, an engagement groove 12E is formed at the lower end portion of the inner beam member 12, and the engagement groove 12E can be fitted to the lower receiving member 26. The attachment portion 12D and the engagement groove 12E are also formed by being cut out integrally by machining such as NC processing when the main body portion 12A and the corrugated plate support portion 12B are formed.

なお、取り付け部１２Ｄおよび係合溝１２Ｅは、内側桁部材１２、外側桁部材１３を貼り合わせ、さらに、前記サイドパッキン１４、１５をそれぞれの外側に貼り合わせたとき、図２に示すように、サイドパッキン１４、１５で隠されるようになっている。 In addition, when the attaching part 12D and the engaging groove 12E are bonded to the inner girder member 12 and the outer girder member 13 and the side packings 14 and 15 are bonded to the outer sides, as shown in FIG. It is hidden by the side packings 14 and 15.

また、外側桁部材１３は、内側桁部材１２とほぼ同じような形状となっており、図２に示すように、本体部１３Ａ、段板支持部１３Ｂ、取り付け部１２Ｄ、および係合溝１２Ｅを有するとともに、それらの各部が、内側桁部材１２と同じようにＮＣ加工等の機械加工により一体的に切り出して形成されている。 The outer girder member 13 has substantially the same shape as the inner girder member 12, and as shown in FIG. 2, the main body portion 13A, the step plate support portion 13B, the attachment portion 12D, and the engagement groove 12E are provided. These parts are integrally cut out by machining such as NC machining in the same manner as the inner girder member 12.

そして、これらの内側桁部材１２と外側桁部材１３とが貼り合わされたとき、それぞれの段板支持部１２Ａ、１３Ａの上面１２Ｃ、１３Ｃは、内側桁部材１２の上面１２Ｃが外側桁部材１３の上面１３Ｃよりも高くなっており、その内側桁部材１２の高くなった部位がブロック部２２を構成している。 When the inner girder member 12 and the outer girder member 13 are bonded together, the upper surfaces 12C and 13C of the corrugated plate support portions 12A and 13A are the same as the upper surface 12C of the inner girder member 12 and the upper surface of the outer girder member 13, respectively. The height of the inner girder member 12 is higher than 13 C, and the block portion 22 is formed by the higher portion of the inner girder member 12.

前記サイドパッキン１４、１５は、図２に示すように、幾分薄目の（例えば５．５ｍｍ程度）、例えば合板で形成され、各桁部材の反対部の幅とほぼ同じ寸法の幅および長さに形成されている。 As shown in FIG. 2, the side packings 14 and 15 are formed of somewhat thin (for example, about 5.5 mm), for example, plywood, and have a width and a length approximately the same as the width of the opposite portion of each girder member. Is formed.

前記段板３０は、図５に示すように、所定厚さの合板等で形成されており、その裏面には所定間隔をあけて、２個の角柱３１がその長手方向を段板３０の幅方向に沿わせて互いに平行に取り付けられている。これらの角柱３１は、例えばラワン合板等の板部材で形成されるとともに、段板３０の長さ方向および幅方向のほぼ中央に配置され、ボンド等の接着剤で接着すると同時にビス等によって段板３０に固定されている。 As shown in FIG. 5, the step plate 30 is formed of a plywood or the like having a predetermined thickness. The back surface of the step plate 30 is spaced a predetermined distance from each other so that two prisms 31 extend in the longitudinal direction of the step plate 30. They are attached parallel to each other along the direction. These prisms 31 are formed of a plate member such as a lauan plywood, for example, and are arranged at substantially the center in the length direction and the width direction of the step plate 30, and are bonded with an adhesive such as a bond and at the same time with a screw or the like. 30 is fixed.

これら角柱３１は、前記内側桁部材１２の上面１２Ｃと外側桁部材１３の上面１３Ｃとの高さの差、つまり前記ブロック部２２の高さ寸法よりわずかに小さな寸法に形成されており、段板支持部材２０と係合可能な形状となっている。 These prisms 31 are formed to have a height difference between the upper surface 12C of the inner girder member 12 and the upper surface 13C of the outer girder member 13, that is, a dimension slightly smaller than the height dimension of the block portion 22. The shape is engageable with the support member 20.

なお、段板３０は、図５では直方体形状に記載されているが、平板状であれば、円形や楕円形など、任意の形状とすることができる。 In addition, although the corrugated board 30 is described in the rectangular parallelepiped shape in FIG. 5, if it is flat form, it can be set as arbitrary shapes, such as circular and an ellipse.

前記桁カバー１８は、図６（ａ）に示すように、ささら桁１０の上面を覆う天面カバー部１８Ｂと、ささら桁１０の側面を覆う側面カバー部１８Ｃと、ささら桁１０の下面を覆う底面カバー部１８Ｄとから構成されている。そして、耐水性および耐久性に優れる合成樹脂、例えばオレフィン製シートを合板に接着して形成された複合合板であるＷ_S（木質シリーズ）オレフィン合板で形成されてなるものである。
また、図６（ｂ）に示すように、裏面から、折り部Ｄが切り出し形成されているとともに、段板支持部材２０を挿通可能とする複数の穴部１８Ａも形成されている。
なお、これら各カバー部、折り部Ｄおよび穴部１８Ａも、内側桁部材１２等と同じようにＮＣ加工等の機械加工で加工される。 As shown in FIG. 6A, the girder cover 18 covers a top surface cover portion 18 B that covers the top surface of the counter beam 10, a side surface cover portion 18 C that covers the side surface of the counter beam 10, and a bottom surface of the counter beam 10. It is comprised from bottom face cover part 18D. And it is formed by the synthetic resin which is excellent in water resistance and durability, for example, _WS (woody series) olefin plywood which is a composite plywood formed by bonding an olefin sheet to the plywood.
Moreover, as shown in FIG.6 (b), while the folding part D is cut out and formed from the back surface, the several hole part 18A which can penetrate the corrugated board support member 20 is also formed.
In addition, each cover part, the folding part D, and the hole part 18A are also machined by machining such as NC machining in the same manner as the inner girder member 12 and the like.

前記各カバー部は、図７（ａ）に示すように、Ｗ_Sオレフィン合板を切削して前記折り部Ｄが形成されると同時に、各カバー部が形成されており、さらに、図７（ｂ）に示すように、これら各カバー部の床側端部１９が、床面６０に接する形態で斜めにカットされて形成されている。
この時、天面カバー部１８Ｂには、段板支持部材２０を挿通可能にする穴部１８Ａが設けられ、また、底面カバー部１８Ｄの床側端部１９Ｄは床面６０に対して端縁のみが接する形態となるように斜めにカットされている。
なお、穴部１８Ａの穴の周囲寸法は、段板支持部２０の周囲寸法よりも大きく設定され、桁カバー１８を桁部材１２、１３に被せる際に、前記段板支持部２０を容易に挿通させることができるように形成されている。 As shown in FIG. 7 (a), each cover portion is formed by cutting each _WS olefin plywood to form the folded portion D. At the same time, each cover portion is formed. ), The floor side end portion 19 of each cover portion is formed by being obliquely cut in a form in contact with the floor surface 60.
At this time, the top cover portion 18B is provided with a hole portion 18A through which the step board support member 20 can be inserted, and the floor side end portion 19D of the bottom surface cover portion 18D has only an edge with respect to the floor surface 60. It is cut diagonally so that it comes into contact.
The peripheral dimension of the hole of the hole portion 18A is set larger than the peripheral dimension of the step plate support portion 20, and when the girder cover 18 is put on the girder members 12 and 13, the step plate support portion 20 is easily inserted. It is formed so that it can be made.

前記折り部Ｄには、図８（ａ）に示すように、折り線Ｍを挟んで両側に、折り部Ｄに所定の厚さを残して厚さ方向の一方側から他方側に向かって４５°の角度でカットしたＶカット部Ｋが形成されている。そのため、桁カバー１８を折り曲げたとき、折り線Ｍを挟んだ両側の切欠部Ｋが接触し合い、これにより、桁カバー１８に多少の厚みがあっても、容易に、かつ正確に折り曲げることができる。
このような桁カバー１８は、図８（ｂ）に示すように、ささら桁１０を覆ったとき、継ぎ目が２枚のささら桁１０、１１に挟まれた内側に位置するように構成されている。 As shown in FIG. 8A, the folding portion D is 45 on both sides of the folding line M and from the one side in the thickness direction toward the other side leaving a predetermined thickness on the folding portion D. A V-cut portion K cut at an angle of ° is formed. Therefore, when the girder cover 18 is folded, the notch portions K on both sides sandwiching the fold line M come into contact with each other, so that even if the girder cover 18 has some thickness, it can be easily and accurately folded. it can.
As shown in FIG. 8 (b), such a girder cover 18 is configured such that the seam is located inside the two girder beams 10 and 11 when covering the girder beam 10. .

前記穴部１８Ａは、図９（ａ）に示すように、Ｗ_Sオレフィン合板の裏側から表面側にかけて、略円錐状のフライス１００Ａで切り抜かれて形成される。この際、このフライス１００Ａの尖端部分によって表面側が切り抜かれるため、図９（ｂ）に示すように、この桁カバー１８の表面には、直角状の四隅を備えた穴部１８Ａが形成されている。 As shown in FIG. 9A, the hole 18A is formed by cutting out with a substantially conical milling cutter 100A from the back side to the surface side of the _WS olefin plywood. At this time, since the surface side is cut out by the pointed portion of the milling cutter 100A, as shown in FIG. 9B, a hole 18A having four right-angled corners is formed on the surface of the girder cover 18. .

以上のような形態の桁カバー１８がささら桁１０に被せられることによって、図１０に示すように、ささら桁１０の四周が覆われ、また、断面視すると、底面カバー部１８Ｄの床側端部１９Ｄが端縁のみで床面６０と接する形態となる。
また、この時、桁部材１２、１３と、桁カバー１８とは密着せずに、これらの間にわずかなすき間が形成されている。これは例えば、図１１に示すように、床面に不陸がある場合などに、桁カバー１８の天面カバー部１８Ｂを前側に倒して床面６０と接しさせることができ、床面６０の不陸を吸収して、不陸によって生じる段差部分のすき間を隠すことができるように形成されている。 When the girder cover 18 having the above-described form is put on the sheathing girder 10, as shown in FIG. 10, the four circumferences of the sheathing girder 10 are covered. 19D becomes a form which touches the floor surface 60 only by an edge.
At this time, the girder members 12 and 13 and the girder cover 18 are not in close contact with each other, and a slight gap is formed between them. For example, as shown in FIG. 11, when the floor surface is uneven, the top cover portion 18 B of the girder cover 18 can be brought forward and brought into contact with the floor surface 60. It is formed so as to absorb the unevenness and hide the gap of the stepped portion caused by the unevenness.

なお、本実施の形態の桁カバー１８は、Ｗ_Sオレフィン合板が用いられたが、これに限定されるものではなく、その要旨を逸脱しない範囲で適宜変更可能である。
例えば、硬質、半硬質、軟質などの感触が可変で、色柄も木目模様、抽象柄、単色などがあり、エンボス加工を施した塩化ビニル樹脂化粧合板などがある。 Incidentally, the digit cover 18 of this embodiment is W _S olefin plywood is used, it is not limited thereto, and can be suitably changed without departing from the scope of the invention.
For example, the feel of hard, semi-rigid, soft, etc. is variable, and the color pattern includes a wood grain pattern, abstract pattern, single color, etc., and there is an embossed vinyl chloride resin decorative plywood.

以上のような構成のストリップ階段１の取り付けは、あらかじめ桁カバー１８を被せた２枚のささら桁１０、１１を、図４に示すように、その上部を上受け材２５で連結するとともに、その上受け材２５を被取り付け部５０に釘打ち等で取り付けて固定する。 As shown in FIG. 4, the strip staircase 1 having the above-described structure is attached by connecting the upper portions of the two spar 10 and 11 covered with the girder cover 18 in advance with the upper support member 25 as shown in FIG. The upper receiving material 25 is attached and fixed to the attached portion 50 by nailing or the like.

また、２枚のささら桁１０、１１の下部を、室内Ａの床６０の所定位置に固定した下受け材２６に係合し、かつ釘打ち等により固定する。この際、図示しない釘を、ささら桁１０、１１の、例えば外側桁部材１３における下端部の斜めとなった前面から下受け材２６に向けて打ち付けて、ささら桁１０、１１の下部と下受け材２６とを固定させ、その後、内側桁部材１２の段板支持部１２Ｂ、および外側桁部材１３の段板支持部１３Ｂにもカバー１７を被せると、釘打ち箇所を隠すことができる。 Further, the lower portions of the two spar girders 10 and 11 are engaged with the lower receiving member 26 fixed at a predetermined position on the floor 60 in the room A, and fixed by nailing or the like. At this time, a nail (not shown) is struck from the front surface of the counter girder 10, 11, for example, the lower end portion of the outer girder member 13, toward the lower support member 26, so When the material 26 is fixed, and then the cover 17 is also placed on the step plate support portion 12B of the inner girder member 12 and the step plate support portion 13B of the outer girder member 13, the nail-driving portion can be hidden.

次に、前記複数の段板３０を段板支持部材２０にそれぞれ取り付けて、図１に示すように、上階と下階を行き来できるようにする。また、全ての段板３０をささら桁１０、１１に取り付けたら、必要に応じて手摺り４０を取り付ける。手摺り４０を設ける場合には、段板３０の手摺り４０を設けるべき位置に手摺り４０取り付け用の穴をあけておく。 Next, the plurality of step plates 30 are respectively attached to the step plate support member 20 so that the upper floor and the lower floor can be moved back and forth as shown in FIG. When all the corrugated plates 30 are attached to the spar 10 and 11, the handrail 40 is attached as necessary. When the handrail 40 is provided, a hole for attaching the handrail 40 is made at a position where the handrail 40 of the corrugated board 30 is to be provided.

そして、このストリップ階段１を取り付けた際に、床面６０に多少の不陸があった場合、図１１に示すように、底面カバー部１８Ｄの床側端部１９Ｄが、床面６０に対して端縁のみが接する形態となっているので、桁カバー１８の底面カバー部１８Ｄが縁部のみで床面に接し、桁カバー１８の天面カバー部１８Ｂを前側に倒して床面６０と接しさせることができ、床面６０の不陸を吸収して、不陸によって生じる段差部分のすき間を隠すことができる。
また、天面カバー１８Ｂ、側面カバー１８Ｃ、底面カバー１８Ｄによってささら桁１０、１１の四周を覆うため、ストリップ階段１全体の見映えを良くすることができる。
これらのことによって、外観に優れた見映えのよい仕上がりのストリップ階段１を提供することができる。 And when this strip staircase 1 is attached and there is some unevenness in the floor surface 60, the floor side end portion 19D of the bottom surface cover portion 18D is located with respect to the floor surface 60 as shown in FIG. Since only the edge is in contact, the bottom cover portion 18D of the girder cover 18 is in contact with the floor surface only at the edge portion, and the top cover portion 18B of the girder cover 18 is tilted forward to contact the floor surface 60. It is possible to absorb the unevenness of the floor surface 60 and hide the gap of the step portion caused by the unevenness.
In addition, since the top cover 18B, the side cover 18C, and the bottom cover 18D cover the four rounds of the spar 10 and 11, the appearance of the entire strip staircase 1 can be improved.
Thus, it is possible to provide a strip staircase 1 having an excellent appearance and a good finish.

なお、上記のような実施の形態のほかに、例えば、不陸の状態によっては、各カバー部１８の床側端部１９Ｂ、１９Ｃ、１９Ｄを潰して変形させることによって、ストリップ階段１の前面に生じる段差部分のすき間を隠すことができる。
すなわち、各カバー部１８の床側端部１９Ｂ、１９Ｃ、１９Ｄよりも桁材１２（１３）を若干引っ込めた構造のささら桁１０を用いる。このようなささら桁１０を、例えば凹凸が生じたフローリング材６１上に設置すると、図１２に示すように、桁材１２（１３）よりも床側端部１９Ｂ、１９Ｃ、１９Ｄが、先にフローリング材６１に接する。すると、ささら桁１０自体の重みで、これら床側端部１９Ｂ、１９Ｃ、１９Ｄは潰れて変形し、凹凸の形状に馴染むことが出来る。そして、これら床側端部１９Ｂ、１９Ｃ、１９Ｄが凹凸の形状に馴染むことによって、ささら桁１０前面のすき間も隠すことが出来るので外観に優れた見映えのよい仕上がりのストリップ階段１を提供することができる。 In addition to the above-described embodiment, for example, depending on the state of non-land, the floor side end portions 19B, 19C, and 19D of each cover portion 18 may be crushed and deformed so that It is possible to hide the gap in the stepped portion.
That is, the girder 10 having a structure in which the girder material 12 (13) is slightly retracted from the floor side end portions 19B, 19C, 19D of the cover portions 18 is used. When such a spar 10 is installed on, for example, an uneven flooring 61, floor end portions 19B, 19C, and 19D are placed in front of the floor 12 (13) as shown in FIG. Contact material 61. Then, the floor side end portions 19B, 19C, and 19D are crushed and deformed by the weight of the sheathing girder 10 itself, and can adapt to the uneven shape. And, since these floor side end portions 19B, 19C, 19D are adapted to the uneven shape, it is possible to hide the gap on the front surface of the spar girder 10, so that the appearance of the strip staircase 1 having an excellent appearance and excellent appearance is provided. Can do.

また、図示はしないが、底面カバー部１８Ｄの床側端部１９Ｄの作用による実施の形態の他に、天面カバー部１８Ｂに形成された穴部１８Ａの穴周囲の寸法と、段板支持部２０の周囲の寸法との寸法差によっても同様の効果を得ることができる。 Although not shown, in addition to the embodiment by the action of the floor side end portion 19D of the bottom surface cover portion 18D, the dimensions of the hole portion 18A around the hole portion 18A formed in the top surface cover portion 18B, and the corrugated plate support portion A similar effect can be obtained by a dimensional difference from the dimensions around 20.

これは、ささら桁１０、１１に桁カバー１８を容易に被せるために、前記穴部１８Ａの周囲の寸法を段板支持部２０よりも多少大きくなるように設定していることによって、穴部１８Ａの穴周囲の寸法と、段板支持部２０の周囲の寸法との寸法差に余裕ができるので、床面６０に多少の不陸があっても、この余裕分の範疇で桁カバー１８がずれて、ストリップ階段１の前面に生じる段差部分のすき間を隠すことができる。 This is because the hole 18A is set so that the dimension around the hole 18A is slightly larger than the step plate support part 20 so that the girder cover 18 can be easily covered with the spar 10 and 11. Since there is a margin in the dimensional difference between the dimension around the hole of the plate and the dimension around the corrugated plate support portion 20, the girder cover 18 is displaced in the category of the margin even if there is some unevenness on the floor surface 60. Thus, it is possible to hide the gap of the step portion generated on the front surface of the strip staircase 1.

本発明に係るストリップ階段の一実施形態を示す斜視図である。It is a perspective view which shows one Embodiment of the strip staircase which concerns on this invention. ささら桁の一つを示す分解斜視図である。It is a disassembled perspective view which shows one of the further spar. ささら桁を構成する内側桁部材を示す側面図である。It is a side view which shows the inner side girder member which comprises a spar. ささら桁の取り付け位置を示す分解図である。It is an exploded view which shows the attachment position of a sagittal girder. ２枚のささら桁と段板とを示す分解斜視図である。It is a disassembled perspective view which shows two sheeting girders and a corrugated board. 桁カバーであって、（ａ）は表側から見た平面図であり、（ｂ）は裏側からみた平面図である。It is a girder cover, (a) is the top view seen from the front side, (b) is the top view seen from the back side. 桁カバーの加工状態を示し、（ａ）は折り部を形成したことを示す斜視図であり、（ｂ）は各カバー部を形成したことを示す斜視図である。The processing state of a girder cover is shown, (a) is a perspective view showing that a folding part is formed, and (b) is a perspective view showing that each cover part is formed. 桁カバーの被覆状態を示し、（ａ）は桁カバーの折り部を示す断面図であり、（ｂ）は桁カバーをささら桁に被せたことを示す断面図である。The covering state of the girder cover is shown, (a) is a cross-sectional view showing a folded portion of the girder cover, and (b) is a cross-sectional view showing that the girder cover is covered with a further girder. 天面カバーの穴部を示し、（ａ）は裏側から切削することを示す斜視図であり、（ｂ）は表側から見た穴部を示す斜視図である。The hole part of a top cover is shown, (a) is a perspective view which shows cutting from the back side, (b) is a perspective view which shows the hole part seen from the front side. 桁カバーをささら桁に被せた際の下端部分を断面とした、本発明の主要部分を示す斜視図である。It is a perspective view which shows the principal part of this invention which made the lower end part at the time of covering a girder cover to a further girder a cross section. 桁カバーをささら桁に被せた際の主要部分を示す側断面図である。It is a sectional side view which shows the principal part at the time of putting a girder cover on a further girder. フローリング材に生じた凹凸に対応する桁カバーの床側端部の状態を示す側断面図である。It is side sectional drawing which shows the state of the floor side edge part of the girder cover corresponding to the unevenness | corrugation which arose in the flooring material. 従来の、２枚のささら桁と段板とを示す分解斜視図である。It is a disassembled perspective view which shows the conventional two sheeting girders and a corrugated board. 従来の、ささら桁の一つを示す分解斜視図である。It is a disassembled perspective view which shows one of the conventional sacks. 従来の、ささら桁の取り付け位置を示す分解図である。It is an exploded view which shows the attachment position of the conventional sacks. ささら桁の四周を覆う形態の桁カバーであって、床面の不陸を吸収できずにすき間が形成されたことを示す側断面図である。FIG. 5 is a side cross-sectional view showing a girder cover that covers four rounds of the sasara girder and that a gap is formed without absorbing the unevenness of the floor surface.

Explanation of symbols

１ストリップ階段
１０ささら桁（右側）
１１ささら桁（左側）
１２内側桁部材
１３外側桁部材
１４、１５サイドパッキン
１８桁カバー
１８Ａ穴部
１８Ｂ天面カバー部
１８Ｄ底面カバー部
１９床側端部
１９Ｄ底面カバー部の床側端部
２０段板支持部材
３０段板
６０床面
６１フローリング材（凹凸）
Ａ室内
Ｄ折り部
ＫＶカット部 1 Strip stairs 10 Sasara girder (right side)
11 Sasara Girder (Left side)
12 inner girder member 13 outer girder members 14 and 15 side packing 18 girder cover 18A hole 18B top cover portion 18D bottom cover portion 19 floor side end portion 19D floor side end portion 20 of bottom cover portion step plate support member 30 step plate 60 Floor 61 Flooring (Roughness)
A Indoor D Folding part K V cut part

Claims

Ridge beams installed diagonally across the upper and lower floors, step plate support members provided at predetermined intervals in the longitudinal direction of the plate columns, a plurality of step plates supported by the step plate support members, and the plate In a strip staircase with a girder cover covering the four sides of the girder,
The sagittal girder cover comprises a top surface cover portion covering the upper surface of the sagittal girder, a side surface cover portion covering the side surface of the sagittal girder, and a bottom surface cover portion covering the lower surface of the sagittal girder,
The floor side end of each cover part is cut obliquely in a form in contact with the floor surface, and the floor side end part of the bottom cover part is cut obliquely in a form in which only the edge is in contact with the floor surface. Strip staircase characterized by

The strip stairs according to claim 1,
Each cover part constituting the girder cover is connected via a fold part, and the fold part of the girder cover is thick on both sides of the fold part, leaving a predetermined thickness on the fold part. A strip staircase having a V-cut portion cut at an angle of 45 ° from one side of the direction to the other side.

The strip staircase according to claim 1 or 2,
A strip staircase characterized in that a plurality of holes are formed in the top cover portion of the girder cover so that the step plate support portion can be inserted therethrough.

In strip stairs as described in any one of Claims 1-3,
A strip staircase, wherein the girder cover is a composite plywood formed by bonding a synthetic resin sheet to a plywood.