JP4165469B2

JP4165469B2 - Staircase

Info

Publication number: JP4165469B2
Application number: JP2004213021A
Authority: JP
Inventors: 智之西崎
Original assignee: 三協立山アルミ株式会社
Priority date: 2004-07-21
Filing date: 2004-07-21
Publication date: 2008-10-15
Anticipated expiration: 2024-07-21
Also published as: JP2006029004A

Description

本発明は、樹脂製の踏板を用いる階段に関するものである。 The present invention relates to a staircase using a resin tread.

木造住宅の屋内の階段、庭に設ける木調のバルコニーやデッキ等の階段においては、周囲との意匠面での調和を考えれば、踏板には天然木材を使用することが好ましい。しかし近年では、木材資源の減少から木材の代わりに樹脂材が使用されることが多くなっており、階段の踏板にも樹脂材が使用されている（例えば特許文献１、２参照。）。樹脂製の踏板は、押出成形や射出成形により安価に製造でき、軽量であり、屋外に設置しても経年変化が少ないといった特徴を有する。樹脂製の踏板は、木質感を持たせるために木粉を混ぜたり、着色ペレットを用いて着色したりしている。 In stairs such as indoor stairs in wooden houses and wooden balconies and decks provided in the garden, it is preferable to use natural wood for the tread board in consideration of harmony with the surroundings in terms of design. However, in recent years, a resin material is often used instead of wood because of a decrease in wood resources, and a resin material is also used for a stair tread (see Patent Documents 1 and 2, for example). Resin-made treads can be manufactured at low cost by extrusion molding or injection molding, are lightweight, and have the characteristics that they are less likely to change over time even when installed outdoors. The resin tread is mixed with wood powder or colored with colored pellets to give it a wooden texture.

樹脂製の踏板を使用する場合、踏板単体では階段を昇り降りする人の体重を支えるには強度が不十分となるので、踏板を金属製の支持部材で補強している。従来は、意匠面を考慮して金属製の支持部材が外部から視認されないように、踏板の裏面側に凹部を設け、凹部内に支持部材を収容したりしている。
実開平５−８３１４３号公報特開平７−３４６２７号公報 When a resin tread is used, the strength of the tread alone is insufficient to support the weight of a person going up and down the stairs, so the tread is reinforced with a metal support member. Conventionally, in consideration of the design surface, a recessed portion is provided on the back side of the tread plate so that the metallic supporting member is not visually recognized from the outside, and the supporting member is accommodated in the recessed portion.
Japanese Utility Model Publication No. 5-83143 Japanese Patent Laid-Open No. 7-34627

上記のように、樹脂製の踏板を金属製の支持部材で補強した場合でも、最も荷重の掛かる踏み板の前側端部が樹脂だけで構成されることになるので、その前側端部が割れる等の破損が生ずることがあった。本発明は以上に述べた実情に鑑み、樹脂製の踏板を使用した場合であっても、踏板が破損する心配のない階段の提供を目的とする。 As mentioned above, even when a resin tread is reinforced with a metal support member, the front end of the most loaded tread is made of only resin, so the front end is cracked, etc. Damage sometimes occurred. The present invention has been made in view of the circumstances described above, and an object of the present invention is to provide a staircase that does not cause the tread to be damaged even when a resin tread is used.

上記の課題を達成するために本発明の階段は、左右の側板と、樹脂製の踏板と、金属製の踏板支持部材と、取付金具とを備え、踏板は、前側壁の下部に前側係止部を有し、後側壁の下部に後側係止部を有し、踏板支持部材は、前部に中空の補強部を、下部に中空の支持部をそれぞれ有し、支持部の上部には前後に被係止部が設けてあり、踏板は、前側係止部及び後側係止部を踏板支持部材の被係止部にそれぞれ係止し、踏板支持部材の支持部上に載置して踏板支持部材に固定してあり、踏板の前側壁上部が踏板支持部材の補強部に当接しており、且つ踏板の上面は踏板支持部材の補強部の上面と同等か低くなっており、取付金具は、左右の側板にそれぞれ取付けてあり、踏板支持部材は両端を左右の取付金具上に載置して取付金具に固定してあることを特徴とする。 In order to achieve the above object, the staircase of the present invention includes left and right side plates, a resin tread, a metal tread support member, and a mounting bracket. And a rear locking portion at the lower part of the rear side wall, and the tread support member has a hollow reinforcing part at the front part and a hollow supporting part at the lower part, Locked portions are provided at the front and rear, and the tread plate has the front lock portion and the rear lock portion locked to the locked portions of the tread plate support member, and is placed on the support portion of the tread plate support member. The top of the front side wall of the tread is in contact with the reinforcement of the tread support, and the top of the tread is equal to or lower than the upper of the reinforcement of the tread support. The brackets are attached to the left and right side plates respectively, and the tread support members are mounted on the left and right mounting brackets and fixed to the mounting brackets. And wherein the Rukoto.

本発明の階段は、樹脂製の踏板と金属製の踏板支持部材とが強固にしかも体裁良く結合しており、強い荷重が集中的にかかる踏板の前側に踏板支持部材の補強部を配置してしっかりと補強していることから、樹脂製の踏板を使用した場合でもあっても踏板が破損する心配がない。また、踏板の前側壁上部が補強部に当接し、且つ踏板の上面が補強部の上面と同等か低くなっているので、荷重を主に補強部で支えて踏板に強い荷重が加わるのを防ぎ、踏板の破損を確実に防止することができ、尚且つ階段の踏板として意匠的にも優れたものになる。 In the staircase of the present invention, the resin tread board and the metal tread board support member are firmly and well coupled, and the reinforcing portion of the tread board support member is disposed on the front side of the tread board where a heavy load is concentrated. Since it is firmly reinforced, there is no risk of damage to the tread even when a resin tread is used. In addition, since the upper part of the front side wall of the tread comes into contact with the reinforcing part, and the upper surface of the tread is equal to or lower than the upper surface of the reinforcing part, the load is mainly supported by the reinforcing part to prevent a strong load from being applied to the tread. The breakage of the tread can be reliably prevented, and the design of the stair tread is excellent.

以下、本発明の実施の形態を図面に基づいて説明する。図１から図５は、本発明の階段の一実施形態であって、庭に設置したバルコニー１２に昇り降りするための階段とした場合の実施形態を示している。この階段は、左右の側板１，１間に上下二段の踏板２，２を取付けており、踏板２は樹脂製の踏板２を金属製の踏板支持部材３で補強したものとなっている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 to FIG. 5 show an embodiment of the staircase of the present invention, which is a staircase for ascending and descending to a balcony 12 installed in a garden. In this stairs, two upper and lower treads 2 and 2 are attached between the left and right side plates 1 and 1, and the tread 2 is reinforced by a resin tread 2 with a metal tread support member 3.

踏板２は、樹脂に木粉を混ぜて押出成形した樹脂製踏板２を使用している。この踏板２は、図１に示すように、断面矩形状で、内部に縦リブ１３を設けて中空の板状に形成してある。踏板２の前側壁５は、図１と４に示すように、上部に垂直部５ａを有し、垂直部の下部に連続して内向き傾斜部５ｂを有し、その下部より前側係止部６を前方に突出して形成してある。前側係止部６の先端は、前側壁の垂直部５ａよりも若干後側に位置している。後側壁７は前側壁５と対称に形成してあり、前側壁５と同じように垂直部７ａと、内向き傾斜部７ｂと、後方に突出した後側係止部８を有している。踏板２に使用する樹脂は、ポリエチレン樹脂、ポリプロピレン樹脂、ＡＢＳ樹脂、ポリ塩化ビニル樹脂等、種々のものを使用でき、廃プラスチックを利用することもできる。樹脂に配合する木粉も、広葉樹、針葉樹などの種々の木材を用いることができるが、建築廃材や間伐材、木材工場からでる木屑などを使用すれば、材料コストを削減できる。 As the step board 2, a resin tread 2 made by extruding and mixing wood powder with resin is used. As shown in FIG. 1, the tread plate 2 has a rectangular cross section and is formed in a hollow plate shape with vertical ribs 13 provided therein. As shown in FIGS. 1 and 4, the front side wall 5 of the tread 2 has a vertical part 5 a at the upper part, and has an inwardly inclined part 5 b at the lower part of the vertical part. 6 is formed to protrude forward. The front-end | tip of the front side latching | locking part 6 is located in the back side a little rather than the vertical part 5a of the front side wall. The rear side wall 7 is formed symmetrically with the front side wall 5, and has a vertical portion 7 a, an inwardly inclined portion 7 b, and a rear side locking portion 8 protruding rearward in the same manner as the front side wall 5. Various resins such as polyethylene resin, polypropylene resin, ABS resin, and polyvinyl chloride resin can be used as the footboard 2 and waste plastics can also be used. Various woods such as hardwoods and conifers can also be used as the wood powder blended in the resin. However, material costs can be reduced by using construction wastes, thinned woods, and wood chips from wood factories.

踏板支持部材３は、アルミニウム合金の押出形材であり、前部に中空の補強部９を有し、その後側の下部に踏板２を支持する中空の支持部１０を有している。支持部１０の上部の前側と後側には、踏板２の前側係止部６と後側係止部８がそれぞれ係止する被係止部１１を設けてある。踏板２と踏板支持部材３とは、互いの側端部より部材長手方向にスライドさせるようにして前側係止部６と後側係止部８を踏板支持部材３の前後の被係止部１１に係止させれば、踏板２の下面が支持部１０上面と密着し、両部材が一体的に結合する。さらに踏板２は、ビス１４で支持部１０に固定して互いにずれないようにしている。このようにして踏板２と踏板支持部材３とが組合わされた状態では、図１に示すように、踏板２の前側壁５は上部の垂直部５ａが補強部９に当接し、且つ踏板２の上面は踏板支持部材３の補強部９の上面と同じ高さになっている。補強部９の上面には、滑り止め材取付用の溝１５を有し、その溝１５にゴムや軟質樹脂からなる帯状の滑り止め材１６を嵌め込んで取付けてある。滑り止め材１６は、上面が踏板２上面よりも高くなるようにしてもよい。 The tread board support member 3 is an extruded shape of an aluminum alloy, has a hollow reinforcing part 9 at the front part, and has a hollow support part 10 that supports the tread board 2 at the lower part on the rear side. On the front side and the rear side of the upper part of the support part 10, there are provided locked parts 11 to which the front side locking part 6 and the rear side locking part 8 of the tread plate 2 are respectively locked. The tread plate 2 and the tread plate support member 3 are made to slide in the longitudinal direction of the member from the side end portions of the tread plate 2 and the rear side lock portion 8 so that the front and rear locked portions 11 of the tread plate support member 3 are engaged. The bottom surface of the tread plate 2 comes into close contact with the top surface of the support portion 10 and the two members are integrally coupled. Further, the tread plate 2 is fixed to the support portion 10 with screws 14 so as not to be displaced from each other. In the state in which the tread board 2 and the tread board support member 3 are combined in this way, as shown in FIG. 1, the front side wall 5 of the tread board 2 is in contact with the reinforcing portion 9 at the upper vertical portion 5 a, and the tread board 2 The upper surface is the same height as the upper surface of the reinforcing portion 9 of the tread board support member 3. An anti-slip material mounting groove 15 is provided on the upper surface of the reinforcing portion 9, and a belt-like anti-slip material 16 made of rubber or soft resin is fitted into the groove 15. The upper surface of the anti-slip material 16 may be higher than the upper surface of the tread plate 2.

左右の側板１は、アルミニウム合金を押出成形して矩形断面の中空状に形成してある。側板１の内側面には、ナット１７をスライド自在に収容するナット収容溝１８を長手方向に沿って二列形成してある。側板１の内側面には、図３に示すように、アングル状の取付金具４の垂直壁が当接し、ナット収容溝１８に収容したナット１７にボルト１９を捩じ込んで、取付金具４が側板１に固定されている。取付金具４の水平壁には踏板支持部材３の側端部を載置し、ボルト２０で固定してある。踏板支持部材３の下面には、取付金具４の水平壁２５が嵌合する凹部２４を設けてある。取付金具４を側板１に取付けているボルト１９を緩めれば、ナット１７がナット収容溝１８内でスライドして高さ調整を簡単に行うことができるし、設置する踏板２の段数の変更も容易に行える。各側板１は、上側の開口部を断面コ字形の取付具２１によりバルコニーの枠２２の外周面に固定してある。側板１の下側の開口部は蓋２６で塞いである。 The left and right side plates 1 are formed in a hollow shape having a rectangular cross section by extruding an aluminum alloy. On the inner side surface of the side plate 1, two rows of nut receiving grooves 18 that slidably receive the nuts 17 are formed along the longitudinal direction. As shown in FIG. 3, the vertical wall of the angle-shaped mounting bracket 4 abuts on the inner surface of the side plate 1, and a bolt 19 is screwed into the nut 17 received in the nut receiving groove 18, so that the mounting bracket 4 is It is fixed to the side plate 1. A side end portion of the tread board support member 3 is placed on the horizontal wall of the mounting bracket 4 and fixed with bolts 20. A recess 24 into which the horizontal wall 25 of the mounting bracket 4 is fitted is provided on the lower surface of the tread board support member 3. If the bolt 19 that attaches the mounting bracket 4 to the side plate 1 is loosened, the nut 17 can slide in the nut receiving groove 18 and the height can be adjusted easily, and the number of steps of the step board 2 to be installed can be changed. Easy to do. Each side plate 1 has an upper opening fixed to an outer peripheral surface of a frame 22 of the balcony by a fixture 21 having a U-shaped cross section. The lower opening of the side plate 1 is closed with a lid 26.

本階段は以上のように構成され、樹脂製の踏板２が前側係止部６と後側係止部８を踏板支持部材３の被係止部１１に係止した状態で支持部１０に載置され、さらに、踏板２の前側に踏板支持部材の補強部９を設けてしっかりと補強していることから、階段を登り降りするときの荷重を補強部９が主に負担することとなり、木粉を混入した樹脂で形成された踏板２であっても、踏板２が破損する心配がない。また、補強部９の上面には滑り止め材１６が取付けてあるので、階段を昇り降りする際に足を滑らせることを防止できる。 The staircase is configured as described above, and the resin tread 2 is mounted on the support 10 in a state where the front locking portion 6 and the rear locking portion 8 are locked to the locked portion 11 of the tread support member 3. Furthermore, since the reinforcing part 9 of the tread board support member is provided on the front side of the tread board 2 and is firmly reinforced, the reinforcing part 9 mainly bears the load when going up and down the stairs, Even if the tread 2 is made of resin mixed with powder, there is no fear of the tread 2 being damaged. Moreover, since the anti-slip | skid material 16 is attached to the upper surface of the reinforcement part 9, it can prevent sliding a leg | foot when going up and down the stairs.

なお本階段に使用している踏板２は、バルコニー１２の床面を構成しているデッキ材２３をそのまま使用したものであり、図２に示すように、踏板２とデッキ材２３とは断面形状、幅や高さ等の寸法、材質、色、質感等が全く同一である。このように、踏板２にデッキ材２３を使用することで、踏板２を新たに準備する必要がなく材料費を削減でき、しかもバルコニーの床面と階段の踏板の意匠を統一できる利点がある。 The step board 2 used in this staircase is the same as the deck material 23 constituting the floor of the balcony 12, and as shown in FIG. 2, the step board 2 and the deck material 23 have a cross-sectional shape. , Dimensions such as width and height, material, color, texture, etc. are exactly the same. Thus, by using the deck material 23 for the step board 2, there is an advantage that the material cost can be reduced without newly preparing the step board 2, and the design of the floor surface of the balcony and the step board of the stairs can be unified.

踏板及び踏板支持部材の拡大した断面図である。It is sectional drawing to which the tread board and the tread board support member were expanded. 本発明による階段の一実施形態を示す縦断面図である。It is a longitudinal cross-sectional view which shows one Embodiment of the staircase by this invention. 本発明による階段の正面図である。It is a front view of the stairs by this invention. 踏板と支持部材の前側部分を分離した状態で示す拡大した断面図である。It is expanded sectional drawing shown in the state which isolate | separated the tread board and the front side part of the supporting member. 本発明の階段をバルコニー用の階段として用いた状態を示す斜視図である。It is a perspective view which shows the state which used the staircase of this invention as a staircase for balconies.

Explanation of symbols

１側板
２踏板
３踏板支持部材
４取付金具
５前側壁
６前側係止部
７後側壁
８後側係止部
９補強部
１０支持部
１１被係止部

DESCRIPTION OF SYMBOLS 1 Side board 2 Tread board 3 Tread board support member 4 Mounting bracket 5 Front side wall 6 Front side locking part 7 Rear side wall 8 Rear side locking part 9 Reinforcement part 10 Support part 11 Locked part

Claims

The left and right side plates, resin treads, metal tread plate support members, and mounting brackets are provided. The tread has a front locking portion at the lower portion of the front side wall, and the rear locking portions at the lower portion of the rear side wall. The treadle support member has a hollow reinforcing part at the front part and a hollow support part at the lower part, and a locked part is provided at the front and back of the upper part of the support part. The front side locking part and the rear side locking part are respectively locked to the locked parts of the tread board support member, placed on the support part of the tread board support member, and fixed to the tread board support member. The upper part is in contact with the reinforcement part of the tread board support member, and the upper surface of the tread board is equal to or lower than the upper surface of the reinforcement part of the tread board support member, and the mounting brackets are attached to the left and right side plates, respectively. A staircase characterized in that the member is mounted on the left and right mounting brackets and fixed to the mounting bracket.