JPH0425870Y2

JPH0425870Y2 -

Info

Publication number: JPH0425870Y2
Application number: JP1985106209U
Authority: JP
Priority date: 1985-07-10
Filing date: 1985-07-10
Publication date: 1992-06-22
Also published as: JPS6214035U

Description

【考案の詳細な説明】〔産業上の利用分野〕本考案は建築、構築物の内、外装の横張り壁
体、さらには段葺状の屋根を形成するのに有用な
サイデイングボード（以下、単にボードという）
に関するものである。〔従来の技術〕従来から使用されているこの種ボードとして
は、例えばＡ○特公昭51−29339号、Ｂ○実公昭51−
11882号、Ｃ○実公昭54−26649号などがある。しか
しながら、この種ボードにおいて最大の欠点は化
粧面が山状になり、これを用いて形成した壁体は
連続した山のような外観となることであつた。ま
たこの種ボードは引掛け構造が多く、施工上の関
係で目地幅が不均一となる欠点があつた。さら
に、この種ボードは化粧面が設計上、平坦（エン
ボス加工も含む）であり、かつ、単なる段差、凹
凸にすぎず、立体感に欠ける不利があつた。その
他、この種ボードにおいては、落し込み型の連結
構造としたボードも知られているが、立体感、防
水性、断熱性、施工性、経済性に欠ける不利があ
つた。〔考案の目的〕本考案は、上述した欠点を除去するため、化粧
面部を階段状に形成し、かつ、その段差を強調す
る空隙を有する窪部を段差部分に設けると共に、
ボードを連結した際に形成される横目地部と化粧
面部の段差部を酷似した外観とし、また、差込縁
の上側には毛細管現象を阻止する溝部を形成し、
また連結部内での雨返しの機能を果たす補強リブ
を設けてボードの連結部の防水性を向上し、しか
も、雄型連結部の延長部の端縁には芯材を充填す
る際のガイド、または原料漏れを防止するための
補強片を形成し、また、ボードの施工が容易に１
人の作業員で、しかも熟練を要さずに行なうこと
ができ、その上、裏面材を表面材の下方に膨出し
て配設することにより表面材による熱橋を阻止
し、断熱性、防火性、防水性、係合力、および立
体感を大幅に助長したボードを提案するものであ
る。〔考案の構成〕以下に、図面を用いて本考案に係るボードの代
表的な一実施例について説明する。すなわち、上
記ボードＡは第１図に示すように、例えば表面処
理鋼板、亜鉛・ニツケル合金をメツキした鋼板、
アルミ・亜鉛合金メツキ鋼板（商品名ガルフア
ン、ガルバリウム鋼板、スーパージンク）、アル
ミニウム板、アルミニウム合金板、銅板、クラツ
ド鋼板、制振鋼板等の１種からなる金属板、（平
板、エンボス加工板を含む）をロール、プレス、
あるいは押出成形などにより形成した表面材１
と、表面材１の裏面に充填した芯材２０と、芯材
２０の裏面を被覆したシート状の裏面材２２とか
らサンドイツチ状に構成したものである。さらに
説明すると、表面材１は第２図に断面を示すよう
に、長尺状の化粧面部２と雄型連結部６と雌型連
結部１４とから構成したものである。すなわち、
化粧面部２は長尺状の板材の表面の任意位置（図
ではほぼ中央）に表面の長手方向と平行に図示す
るように、水平線（ボードＡを施工した際の下地
の線）に対して角度θ₁で屈曲した段差片３と、段
差片３の下端を内方へ、次に外方に折り返して、
例えば深さを１〜10mm位とした窪部４とから形成
した段差部５を少なくとも１段形成し、段差部５
によつて区分した複数個の傾斜化粧片（以下、単
に化粧片という）２ａ，２ｂとから構成したもの
である。この段差部５はボードＡの強度を向上
し、ボードＡを広幅にしても、反り、捩じれ、ペ
コツキを防止するのに役立つものである。なお、
窪部４の大きさは、表面材１の折り曲げ時に生ず
る間隙の大きさ、あるいは任意に形成したもので
あり、段差片３の下端と化粧片２ｂ間を明確に区
分することによつて、化粧面部２の立体感を助長
すると共に、ボードＡを施工した際の横目地部と
外観を酷似させることにより、あたかも化粧片２
ａ，２ｂの個々のボードからなる壁体のようにな
り、壁体に統一したラインを生み、美観性を向上
させるものである。また雄型連結部６は化粧面部
２の上端となる端縁を長手方向と平行に窪ませて
雨返しと毛細管現象の阻止を図る溝部８と補強リ
ブ（図ではパイプ状）９とから形成した差込縁７
と、差込縁７の先端を内方に折り返し、次に外方
に屈曲して断面をＵ字状に形成した係合溝１０
と、係合溝１０の下縁１１を外方に延長した延長
部１２と、延長部１２の先端を下方に屈曲した補
強片１３とから形成したものである。さらに詳し
く説明すると、第３図に示すように、差込縁７は
後述する嵌合溝１８に嵌合し、また係合溝１０は
嵌合溝１８の下縁１７を挿入してボードＡの連結
構造を２重とし、係合力、防水性、気密性を向上
するものである。また、連結構造内には差込縁７
の上縁に設けた溝部８によつて、嵌合溝１８の上
縁１６との間に空隙が形成されるため、毛細管現
象が阻止されると共に、補強リブ９が連結構造内
の雨返しの機能を果たすため、防水性が大幅に向
上する。また、補強片１３は延長部１２の先端の
波打ちを防止すると共に、後述する芯材２０とし
て成形体を用いる場合のガイドとなり、また芯材
２０として液状で吐出し、反応、発泡、硬化する
素材を使用した場合は雄型連結部６の端縁からの
漏洩を防止するのに役立つものである。さらに、
補強片１３は延長部１２の端部の強度を補強する
ため、釘打ちの際に延長部１２の変形を防止する
効果もある。なお、図示しないが、補強片１３の
先端にはぜ状の舌片を形成することも可能であ
る。雌型連結部１４は化粧面部２の下端を段差片
３と同様の角度θ₂で内方へ屈曲した段差片１５と
その下縁を内方へ屈曲して上縁１６とし、上縁１
６の先端を外方に折り曲げて下縁１７とし、断面
Ｕ字状に形成した嵌合溝１８と、下縁１７の先端
を必要によりはぜ状に屈曲した舌片１９とから形
成したものであり、下縁１７は差込縁７を嵌合溝
１８に嵌合する際に係合溝１０に挿入され、より
係合力、防水性を強化するのに役立つものであ
る。さらに段差片１５は段差片３と同様に屈曲し
ているため、壁体を形成した際に段差部５と連結
部の区別がつきにくく、化粧片２ａ，２ｂの個々
のボードによつて壁体を形成しているような外観
となる。２０は芯材で表面材１の裏面に充填し、
主にボードＡに断熱性と機械強度を付与するもの
であり、副次的に接着性、不燃材、クツシヨン
材、防音材などの機能を有する素材の１種以上か
らなるものである。具体的には合成樹脂発泡体、
ロツクウール、グラスウール、シージングボー
ド、石膏ボード、木毛セメント板等の１種以上か
らなり、原料で吐出し、成形、硬化、自己接着さ
せるもの、あるいは成形体などの１種からなるも
のである。なお、成形体を用いる場合には芯材２
０と表面材１、裏面材２２間に接着剤（図示せ
ず）が必要である。さらに説明すると、芯材２０
としては主に合成樹脂発泡体を用い、例えばポリ
ウレタンフオーム用樹脂、フエノールフオーム用
樹脂、ポリイソシアヌレートフオーム用樹脂、お
よびこれらに難燃剤、難燃助剤（硼砂、メタ硼酸
ソーダ、三酸化アンチモン、炭酸カルシウム、水
酸化アルミニウム）、ベントナイト、パーライト
粒、シラスバルーンの１種以上を添加したものな
どからなるものである。さらに説明を加えると、
芯材２０は便宜上、化粧面部２、雄型連結部６、
雌型連結部１４から囲まれた樋状の部分に充填し
た上部２０ａと延長部１２の背面から下方に断面
四角形状に膨出した膨出部２０ｂとからなり、膨
出部２０ｂの雌型連結部１４近傍には切り欠き部
２１を設ける。この膨出部２０ｂは四角形状に膨
出しているため、第３図に示すように、ボードＡ
を連結した際に、表面材１が壁下地αに接触する
のを防止し、表面材１が熱橋となるのを防止し、
断熱性、防火性を向上するのに役立つものであ
る。さらに膨出部２０ｂは防火上の弱点部である
連結部の下部にも配設されるため、防火性をより
向上させ、防火構造試験、準不燃試験にも合格す
ることができると共に、芯材２０としてクツシヨ
ン性のある素材を用いた際は、壁下地αの振動が
連結部に伝達するのを防止し、連結部がはずれる
のを防止する特徴がある。また切り欠き部２１は
ボードＡを連結した際に下段のボードＡの延長部
１２、芯材２０の膨出部２０ｂと組み合わさり、
ボードＡ同士の裏面を平坦にし、壁下地αを一面
に被覆するため、壁内部の密封性が向上し、外気
と壁内部の空気の流通を阻止し、目地部の防水性
が向上する。２２は裏面材で少なくとも芯材２０
の裏面を覆つてボードＡをサンドイツチ構造体と
し、ボードＡ自体の機械強度を向上すると共に、
不燃シート、防水膜、遮熱シート、防音シート、
パツキング材などの機能として役立つものであ
り、例えばアスベスト紙、クラフト紙、アスフア
ルトフエルト、金属箔（Al，Fe，Pb，Cu）、合
成樹脂シート、ゴムシート、石膏紙、水酸化アル
ミ紙、ガラス繊維不織布等の１種、または２種以
上をラミネートしたもの、あるいは防水処理、難
燃処理されたシートなどからなるものである。な
お、裏面材２２の雄型連結部６の端部は図におい
ては補強片１３と芯材２０との中間に配設してい
るが、補強片１３の外側に配設することも可能で
ある。また雌型連結部１４側の端部は舌片１９に
挟持されているが、挟持しないボードＡとするこ
とも可能である。ここで上記各部の寸法、角度関係について簡単
に説明する。第１図、第２図に示すように係合溝
１０の最奥から差込縁７の先端までの距離をl₁、
差込縁７の先端から溝部８の化粧面部２側の端部
までの距離をl₂、係合溝１０の最奥から補強片１
３までの距離をl₃、嵌合溝１８の最奥から下縁１
７の先端までの距離をl₄、嵌合溝１８の最奥から
上縁１６の先端までの距離をl₅、下縁１７の先端
から切り欠き部２１の側面までの距離をl₆、段差
片３の高さをh₁、段差片１５の高さをh₂、補強片
１３の高さをh₃、膨出部２０ｂの雄型連結部６側
の端縁の厚さをh₄、切り欠き部２１の側面の高さ
をh₅、段差片３，１５の水平線に対する角度を
θ₁，θ₂とすると、l₁≒l₄，l₂≦l₅，l₃≒l₆，h₁≒h₂，
h₃≦h₄，h₄≒h₅，θ₁≒θ₂の関係にある。これはボ
ードＡを第３図に示すように壁下地αに施工した
際に段差部５と連結部がほぼ同じ外観を形成する
ようにするためであり、ボードＡにより形成した
壁体に統一した横のラインを生み出し、美観性を
向上させるためである。〔施工例〕いま、第１図に示すようなボードＡを第３図に
示すように横張りして壁体を形成すると仮定す
る。なお、ボードA₁，A₂は表面材１に厚さ0.27
mmのカラー鋼板を用い、また裏面材２２にはアル
ミ・クラフト紙を用い、芯材２０は表面材１と裏
面材２２の間にポリイソシアヌレートフオーム用
原料を吐出し、反応、発泡させ、次にキユアして
一体化したものである。そこで、主柱、間柱、防
水シート等からなる壁下地（図では防水シートを
使用しない場合の壁下地を示す）αに第ｎ段目の
ボードA₁の延長部１２を釘βを介して固定する。
次に第ｎ＋１段目のボードA₂の雌型連結部１４
の嵌合溝１８をボードA₁の雄型連結部６の差込
縁７に嵌挿し、第３図のような横目地部を形成す
るものである。また、壁体全体を形成するには、
上記したような工程を土台から桁に向かつて行な
えばよいものである。このようにして形成した壁
体は横目地と段差部５とが酷似した外観となるた
め、統一した横のラインを生み、美観性に富むも
のとなる。なお、土台部分にはスタータ（図示せ
ず）、出、入隅等の部分にはコーキング材、役物
を用いる必要がある。〔その他の実施例〕以上説明したのは本考案に係るボードの一実施
例にすぎず、第４図ａ〜ｉ〜第７図ａ〜ｊに示す
ように形成することもできる。すなわち、第４図
ａ〜ｉは段差部５の実施例であり、ａ，ｂ図は段
差片３の下端と窪部４の上縁４ａによつて形成さ
れる角部、あるいは化粧片２ａと段差片３の上端
によつて形成される角部に段差強化用の面取り面
５ａを形成した段差部５、ｃ〜ｇ図は窪部４を図
のように形成した段差部５、ｈ図はθ₁を90°に形
成した段差部５、ｉ図はθ₁を鈍角に形成した段差
部５である。また第５図ａ〜ｎは雄型連結部６の
その他の実施例であり、ａ図は下縁１１に対して
係合溝１０の上縁１０ａを角度θ₃となるように形
成した雄型連結部６、ｂ図は差込縁７全体を上方
に傾斜した雄型連結部６、ｃ図は係合溝１０の上
縁１０ａに突条１０ｂを形成した雄型連結部６、
ｄ図は延長部１２、または下縁１１に長手方向と
平行に突条１２ａを形成した雄型連結部６、ｅ図
は延長部１２、または下縁１１に凹条１２ｂを形
成した雄型連結部６、ｆ，ｇ図は突条１２ａと凹
条１２ｂを形成した雄型連結部６、ｈ，ｉ図は補
強片１３の先端にはぜ条の舌片１３ａを形成した
雄型連結部６、ｊ図はl₁＞l₂に形成した雄型連結
部６、ｋ，ｌ図は延長部１２に段差を設けた雄型
連結部６、ｍ図は補強片１３をＬ字状に形成した
雄型連結部６、ｎ図は延長部１２と補強片１３と
の中間に突起１３ｂを形成した雄型連結部６であ
る。また第６図ａ〜ｏは雌型連結部１４の実施例
であり、ａ図は上縁１６の途中に長尺方向と平行
に形成した溝１６ａ、あるいは図示しないがリブ
を形成し、防水、係合力の強化を図る雌型連結部
１４、ｂ図は下縁１７にａ図と同じような溝１７
ａを形成した雌型連結部１４、ｃ，ｄ図は嵌合溝
１８の最奥部を図示するように形成した雌型連結
部１４、ｅ，ｆ図は段差片１５の下端と上縁１６
によつて形成される角部を図示するように形成
し、防水性，段差の強化を図る雌型連結部１４、
ｇ図は上縁１６を段差片１５と角度θ₄になるよう
に傾斜した雌型連結部１４、ｈ図は嵌合溝１８を
つぼ状に形成した雌型連結部１４、ｉ図は舌片１
９を下はぜ状に形成した雌型連結部１４、ｊ図は
下縁１７を段差片１５より外方に突出した雌型連
結部１４、ｋ〜ｍ図は下縁１７の先端を内方に折
り返し、延長した芯材挟持片１９ａを設けた雌型
連結部１４、ｎ図はθ₂を鈍角に形成した雌型連結
部１４、ｏ図はθ₂を90°で形成した雌型連結部１
４である。なお、第４図ａ〜ｊ〜第６図ａ〜ｏに
おいては表面材１のみを示し、板厚を省略してい
る。また、第７図ａ〜ｊはボードＡのその他の実
施例であり、ａ図は裏面材２２の一端を雄型連結
部６の端縁より外方にΔlだけ突出したボードＡ、
ｂ，ｃ図は芯材２０を複数の素材（同質、異質）
から形成したボードＡ、ｄ図は段差部５を２つ以
上設けたボードＡ、ｅ図はハツチングで示す位置
の少なくとも１ケ所にコーキング材２３を植設
し、連結部の防水性をより向上したボードＡ、ｆ
図はボードＡのほぼ中央より角度θ₅で屈曲し、全
体をゆるやかなＶ字状に形成したボードＡ、ｇ，
ｈ図は裏面に流通溝２４を１本以上形成し、エア
サイクル効果を付加したボードＡ、ｉ図は雌型連
結部１４の形状を第６図ｋに示すように形成し、
かつ、裏面材を芯材２０と芯材挟持片１９ａとの
中間に配設したボードＡ、ｊ図は化粧面部２の短
尺方向の両端縁、また１端縁に端面壁２５を形成
したボードＡである。なお、図示しないが、芯材
２０の裏面に裏面材２２を貼着しないボードＡも
形成できるものである。勿論、第４図〜第７図を
各々組み合わせたボードＡとすることもできる。〔考案の効果〕上述したように本考案に係るボードによれば、
化粧面部に少なくとも１段の段差部を形成した
ため、強度が十分に補強されて化粧面部が山状に
なつたりすることがない。差込縁の上側に溝部
を形成したため、毛細管現象を阻止し、かつ、補
強リブが連結部内の雨返しとして機能するため、
連結部の防水性が大幅に向上する。段差部に空
隙を有する窪部を設けたため、横目地部と段差部
とが酷似した外観となり、壁体に統一した横のラ
インを生み出し、美観性に優れた壁体を構成する
ことができる。雄、雌型連結部を前記した落し
込み構造にしたため、１人でも十分に施工でき、
かつ、目地幅（横）を一定にすることができる。
ボードをサンドイツチ構造としたため、強度が
向上する。延長部の端縁に補強片を形成したた
め、芯材として成形体を使用する場合のガイドと
なる。芯材として液状で吐出し、反応、発泡、
硬化させる素材を使用した場合、補強片により雄
型連結部側の液漏れを防止することができる。
補強片により延長部の強度が補強され、釘打ちに
よる変形がない。表面材を広幅としたため、施
工性に富み、しかも素材幅を有効に利用できるの
で経済性にすぐれる。ボードを施工すると芯材
により壁下地を一面に被覆し、かつ、目地部下部
にも配設されるため、表面材が熱橋とならず、断
熱性、防火性が向上する。等の効果がある。 [Detailed description of the invention] [Industrial application field] The present invention is a siding board (hereinafter simply referred to as "siding board") which is useful for forming horizontal walls inside and outside buildings, structures, and even stepped roofs. board)
It is related to. [Prior Art] Examples of this type of board that have been used in the past include A○ Special Publication No. 51-29339 and B○ Utility Publication No. 51-29339.
There are No. 11882, C○Jitko No. 54-26649, etc. However, the biggest drawback of this type of board is that the decorative surface becomes mountain-like, and walls formed using it have the appearance of a continuous mountain. Additionally, this type of board often has a hanging structure, which has the disadvantage of uneven joint width due to construction. Furthermore, the decorative surface of this type of board is flat (including embossing) due to its design, and is merely a step or uneven surface, which has the disadvantage of lacking a three-dimensional effect. In addition, boards of this kind that have a drop-in type connection structure are also known, but these have the disadvantages of lacking three-dimensionality, waterproofness, heat insulation, workability, and economy. [Purpose of the invention] In order to eliminate the above-mentioned drawbacks, the present invention forms the decorative surface part in a step-like manner, and provides a recessed part having a gap that emphasizes the difference in steps, and
The horizontal joints and the stepped portions formed when the boards are connected look very similar to each other, and a groove is formed above the insertion edge to prevent capillary action.
In addition, a reinforcing rib that functions as a rain cover within the connection part is provided to improve the waterproofness of the connection part of the board, and the edge of the extension part of the male connection part is provided with a guide when filling the core material. Or, it forms a reinforcing piece to prevent raw material leakage, and also makes it easier to install the board.
It can be carried out by human workers without requiring any skill, and in addition, by bulging out the backing material below the surface material, it prevents thermal bridges caused by the surface material, improving heat insulation and fire prevention. This paper proposes a board that has significantly improved durability, waterproofness, engagement force, and three-dimensional appearance. [Structure of the invention] A typical embodiment of the board according to the invention will be described below with reference to the drawings. That is, as shown in FIG. 1, the board A is made of, for example, a surface-treated steel plate, a steel plate plated with a zinc-nickel alloy,
Metal plates made of one type of aluminum/zinc alloy plated steel sheets (product names: GULF-AN, GALVALUM steel sheets, SUPER ZINC), aluminum plates, aluminum alloy plates, copper plates, clad steel plates, vibration-damping steel plates, etc. (including flat plates and embossed plates) ) roll, press,
Alternatively, the surface material 1 formed by extrusion molding etc.
The core material 20 is filled in the back surface of the surface material 1 , and the sheet-like back material 22 covers the back surface of the core material 20, forming a sandwich-like structure. To explain further, the surface material 1 is composed of an elongated decorative surface part 2 , a male type connecting part 6 , and a female type connecting part 14 , as shown in cross section in FIG. That is,
The decorative surface part 2 is placed at an arbitrary position on the surface of the long board material (approximately the center in the figure) parallel to the longitudinal direction of the surface, at an angle with respect to the horizontal line (the line of the base when board A was installed). Fold the step piece 3 bent at θ ₁ and the lower end of the step piece 3 inward, then outward,
For example, at least one stepped portion 5 is formed from a recessed portion 4 having a depth of approximately 1 to 10 mm, and the stepped portion 5 is
It is composed of a plurality of inclined decorative pieces (hereinafter simply referred to as decorative pieces) 2a and 2b divided by. This stepped portion 5 improves the strength of the board A and is useful for preventing warping, twisting, and slippage even if the board A is widened. In addition,
The size of the recess 4 is the size of the gap that occurs when the surface material 1 is bent, or it is formed arbitrarily.By clearly separating the lower end of the stepped piece 3 and the decorative piece 2b, By promoting the three-dimensional effect of the surface part 2 and making the appearance closely similar to the horizontal joint part when board A was installed, it looks like the decorative piece 2
It looks like a wall made of individual boards a and 2b, creating a unified line on the wall and improving its aesthetics. The male connecting part 6 is formed by recessing the upper edge of the decorative surface part 2 in parallel with the longitudinal direction to form a groove part 8 and a reinforcing rib (pipe-shaped in the figure) 9 to prevent rain and capillary phenomenon. Insertion edge 7
and an engagement groove 10 in which the tip of the insertion edge 7 is folded inward and then bent outward to form a U-shaped cross section.
It is formed from an extension part 12 that extends the lower edge 11 of the engagement groove 10 outward, and a reinforcing piece 13 that bends the tip of the extension part 12 downward. To explain in more detail, as shown in FIG. The connection structure is double-layered to improve engagement force, waterproofness, and airtightness. In addition, there is a plug-in edge 7 in the connection structure.
The groove 8 provided on the upper edge forms a gap between the fitting groove 18 and the upper edge 16, which prevents capillary action, and the reinforcing rib 9 acts as a rain cover in the connection structure. This function greatly improves waterproofness. In addition, the reinforcing piece 13 prevents the tip of the extension part 12 from waving, and serves as a guide when a molded body is used as the core material 20, which will be described later.The reinforcing piece 13 also serves as a guide when a molded body is used as the core material 20, and is made of a material that is discharged in liquid form and reacts, foams, and hardens as the core material 20. When used, it helps to prevent leakage from the edge of the male connector 6 . moreover,
Since the reinforcing piece 13 reinforces the strength of the end of the extension part 12, it also has the effect of preventing deformation of the extension part 12 during nailing. Although not shown, it is also possible to form a flap-like tongue piece at the tip of the reinforcing piece 13. The female connecting part 14 includes a step piece 15 which bends the lower end of the decorative surface part 2 inward at an angle θ ₂ similar to that of the step piece 3, and a step piece 15 whose lower edge is bent inward to form an upper edge 16.
6 is bent outward to form a lower edge 17, a fitting groove 18 is formed with a U-shaped cross section, and a tongue piece 19 is formed by bending the tip of the lower edge 17 into a seam shape if necessary. The lower edge 17 is inserted into the engagement groove 10 when the insertion edge 7 is fitted into the engagement groove 18, and serves to further strengthen the engagement force and waterproofness. Furthermore, since the step piece 15 is bent in the same way as the step piece 3, it is difficult to distinguish between the step part 5 and the connecting part when forming the wall. It looks like it is forming a . 20 is a core material filled on the back side of the surface material 1 ,
It mainly provides heat insulation properties and mechanical strength to board A, and is made of one or more materials having secondary functions such as adhesive properties, noncombustible materials, cushioning materials, and soundproofing materials. Specifically, synthetic resin foam,
It is made of one or more types of rock wool, glass wool, sheathing board, gypsum board, wood wool cement board, etc., and it is made of one type of material such as discharged raw materials, molded, hardened, and self-adhesive, or molded bodies. In addition, when using a molded body, the core material 2
An adhesive (not shown) is required between 0, the surface material 1 , and the back material 22. To explain further, the core material 20
Synthetic resin foams are mainly used, such as resins for polyurethane foam, resins for phenol foam, and resins for polyisocyanurate foam, and flame retardants and flame retardant aids (borax, sodium metaborate, antimony trioxide, Calcium carbonate, aluminum hydroxide), bentonite, pearlite grains, and shirasu balloons. To explain further,
For convenience, the core material 20 includes a decorative surface portion 2 , a male connecting portion 6 ,
The female type connection of the bulge part 20b consists of an upper part 20a filled in a gutter-like part surrounded by the female type connection part 14 and a bulge part 20b bulged downward from the back surface of the extension part 12 and having a rectangular cross section. A cutout portion 21 is provided near the portion 14 . Since this bulging portion 20b has a square shape, as shown in FIG.
When connecting, the surface material 1 is prevented from coming into contact with the wall base α, the surface material 1 is prevented from becoming a thermal bridge,
This helps improve insulation and fire protection. Furthermore, since the bulging portion 20b is also disposed at the lower part of the connecting portion, which is a weak point in terms of fire prevention, it is possible to further improve fire prevention and pass the fire protection structure test and quasi-noncombustible test. When a material with cushioning properties is used as the material 20, the vibration of the wall base α is prevented from being transmitted to the connecting portion, and the connecting portion is prevented from coming off. In addition, when the boards A are connected, the cutout part 21 is combined with the extension part 12 of the lower board A and the bulge part 20b of the core material 20,
Since the back surfaces of the boards A are made flat and the wall base α is coated all over, the sealing performance inside the wall is improved, the circulation of outside air and the air inside the wall is prevented, and the waterproofness of the joint part is improved. 22 is the back material and at least the core material 20
By covering the back side of the board A with a sandwich structure, the mechanical strength of the board A itself is improved, and
Noncombustible sheets, waterproof membranes, heat shield sheets, soundproof sheets,
It serves as a packing material, such as asbestos paper, kraft paper, asphalt felt, metal foil (Al, Fe, Pb, Cu), synthetic resin sheet, rubber sheet, gypsum paper, aluminum hydroxide paper, glass fiber. It is made of a laminate of one or more types of non-woven fabrics, etc., or a sheet that has been treated with waterproofing or flame retardant treatment. Although the end of the male connecting portion 6 of the backing material 22 is arranged between the reinforcing piece 13 and the core material 20 in the figure, it is also possible to arrange it outside the reinforcing piece 13. . Further, although the end portion on the female connecting portion 14 side is held between the tongue pieces 19, it is also possible to form the board A without being held between the tongue pieces 19. Here, the dimensions and angular relationships of the above-mentioned parts will be briefly explained. As shown in FIGS. 1 and 2, the distance from the deepest part of the engagement groove 10 to the tip of the insertion edge 7 is l ₁ ,
The distance from the tip of the insertion edge 7 to the end of the groove portion 8 on the decorative surface portion 2 side is l ₂ , and the distance from the innermost part of the engagement groove 10 to the reinforcing piece 1 is
₃ , the distance from the innermost part of the fitting groove 18 to the lower edge 1
7, the distance from the deepest part of the fitting groove 18 to the tip of the upper edge 16 is l ₅ , the distance from the tip of the lower edge 17 to the side of the notch 21 is l ₆ , and _the step The height of the piece 3 is h ₁ , the height of the step piece 15 is h ₂ , the height of the reinforcing piece 13 is h ₃ , the thickness of the edge of the bulge 20b on the male connecting part 6 side is h ₄ , Assuming that the height of the side surface of the notch 21 is h ₅ and the angles of the step pieces 3 and 15 with respect to the horizontal line are θ ₁ and θ ₂ , l ₁ ≒ l ₄ , l ₂ ≦ l ₅ , l ₃ ≒ l ₆ , h ₁ ≒ h ₂ ,
The relationships are h ₃ ≦h ₄ , h ₄ ≒h ₅ , and θ ₁ ≒θ ₂ . This is so that when board A is installed on the wall base α as shown in Figure 3, the step part 5 and the connecting part will have almost the same appearance, and the wall body formed by board A will be unified. This is to create horizontal lines and improve aesthetics. [Construction Example] Now, assume that boards A as shown in FIG. 1 are laid horizontally as shown in FIG. 3 to form a wall. In addition, for boards A ₁ and A ₂ , the surface material 1 has a thickness of 0.27
mm color steel plate is used, and aluminum kraft paper is used for the back material 22, and the core material 20 is made by discharging the raw material for polyisocyanurate foam between the surface material 1 and the back material 22, reacting and foaming, and then It has been integrated into one. Therefore, we fixed the extension 12 of the nth board A ₁ to the wall base α consisting of main pillars, studs, waterproof sheets, etc. (the figure shows the wall base when no waterproof sheets are used) via nails β. do.
Next, the female connecting part 14 of the n+1st stage board _A2
The fitting groove 18 is fitted into the insertion edge 7 of the male connecting part 6 of the board _A1 to form a horizontal joint part as shown in FIG. Also, to form the entire wall,
It is sufficient to carry out the process described above from the base to the girder. The wall body formed in this manner has an appearance in which the horizontal joints and the stepped portions 5 are very similar, so that uniform horizontal lines are created and the wall body is aesthetically pleasing. Note that it is necessary to use a starter (not shown) for the base, caulking material, and accessories for the exit and entry corners. [Other Embodiments] What has been described above is only one embodiment of the board according to the present invention, and the board can also be formed as shown in FIGS. 4 a-i to 7 a-j. That is, FIGS. 4a to 4i show examples of the stepped portion 5, and FIGS. 4a and 4b show the corner formed by the lower end of the stepped piece 3 and the upper edge 4a of the recessed part 4, or the decorative piece 2a. A stepped portion 5 in which a chamfered surface 5a for reinforcing the step is formed at the corner formed by the upper end of the stepped piece 3, Figures c to g show a stepped portion 5 in which a recessed portion 4 is formed as shown in the figure, and Figure h shows The step portion 5 in which θ ₁ is formed at 90°, Figure i shows the step portion 5 in which θ ₁ is formed at an obtuse angle. FIGS. 5 a to 5 n show other embodiments of the male connecting portion 6 , and _FIG . Connecting portion 6 , Figure b shows a male connecting part 6 in which the entire insertion edge 7 is inclined upward, Figure c shows a male connecting part 6 in which a protrusion 10 b is formed on the upper edge 10 a of the engagement groove 10 ,
Figure d shows an extension part 12 or a male type connection part 6 in which a protrusion 12a is formed on the lower edge 11 in parallel with the longitudinal direction, and figure e shows an extension part 12 or a male type connection part 6 in which a grooved line 12b is formed in the lower edge 11. Figures 6 , f, and g show a male connecting part 6 in which a protrusion 12a and a grooved line 12b are formed. Figures h and i show a male connecting part 6 in which a rib tongue piece 13a is formed at the tip of the reinforcing piece 13. , J shows the male connecting part 6 formed with l ₁ > l ₂ , K and L show the male connecting part 6 with a step in the extension part 12 , and M shows the reinforcing piece 13 formed in an L-shape Male Connecting Part 6 , Figure n shows a male connecting part 6 in which a protrusion 13b is formed between the extension part 12 and the reinforcing piece 13. 6A to 6O show examples of the female type connecting portion 14 , and FIG. 6A shows a groove 16a formed in the middle of the upper edge 16 in parallel to the longitudinal direction, or a rib (not shown) is formed, making it waterproof, Female type connecting part 14 for strengthening the engagement force, figure b has a groove 17 on the lower edge 17 similar to figure a
Figures a , c and d show the female connector 14 formed to illustrate the innermost part of the fitting groove 18, and figures e and f show the lower end and upper edge 16 of the stepped piece 15.
A female connecting portion 14 is formed with corners formed by
Figure g shows a female connecting part 14 whose upper edge 16 is inclined at an angle θ ₄ with the stepped piece 15, figure h shows a female connecting part 14 with a fitting groove 18 shaped like a pot, and figure i shows a tongue piece. 1
Figure 9 is a female type connecting part 14 formed in the shape of a lower seam, the figure J shows a female type connecting part 14 with the lower edge 17 protruding outward from the stepped piece 15, and the figures K to M show the tip of the lower edge 17 inward. The female connecting part 14 is folded back and provided with an extended core material holding piece 19a, Figure n shows the female connecting part 14 with θ ₂ formed at an obtuse angle, and Figure o shows the female connecting part 14 formed with θ ₂ set at 90°. 1
It is 4. Note that in FIGS. 4 a to 6 a to 6 a to o, only the surface material 1 is shown, and the plate thickness is omitted. In addition, FIGS. 7a to 7j show other embodiments of board A, and FIG .
Figures b and c show the core material 20 made of multiple materials (same or different).
Boards A and d are formed from boards A and d, which have two or more stepped portions 5, and board A and e are boards formed with caulking material 23 in at least one location indicated by hatching to further improve the waterproofness of the joints. Board A, f
The figure _shows boards A, g,
Figure h shows a board A with one or more circulation grooves 24 formed on the back surface to add an air cycle effect, and Figure i shows a board A in which the shape of the female connecting part 14 is formed as shown in Figure 6 k.
Board A in which the back material is disposed between the core material 20 and the core material holding piece 19a; FIG. It is. Although not shown, a board A in which the back material 22 is not attached to the back surface of the core material 20 can also be formed. Of course, the board A may be a combination of each of FIGS. 4 to 7. [Effects of the invention] As mentioned above, according to the board according to the invention,
Since at least one stepped portion is formed in the decorative surface portion, the strength is sufficiently reinforced and the decorative surface portion does not become mountain-like. A groove is formed on the upper side of the insertion edge to prevent capillary action, and the reinforcing rib functions as a rain cover inside the connecting part.
The waterproofness of the connecting part is greatly improved. Since the recessed part with a gap is provided in the step part, the horizontal joint part and the step part have a very similar appearance, creating a uniform horizontal line in the wall body, and making it possible to construct a wall body with excellent aesthetics. Since the male and female joints have the above-mentioned drop-in structure, it can be easily installed by one person.
Moreover, the joint width (horizontal) can be made constant.
The board has a sanderch structure, which improves its strength. Since a reinforcing piece is formed on the edge of the extension, it serves as a guide when the molded body is used as a core material. It is discharged in liquid form as a core material, reacts, foams,
When a hardening material is used, the reinforcing piece can prevent liquid leakage from the male connector side.
The strength of the extension is reinforced by the reinforcing piece, so there is no deformation due to nailing. Because the surface material is wide, it is easy to install, and the width of the material can be used effectively, making it highly economical. When the board is installed, the core material covers the entire wall base and is also placed at the bottom of the joints, so the surface material does not act as a thermal bridge, improving heat insulation and fire protection. There are other effects.

[Brief explanation of the drawing]

第１図は本考案に係るサイデイングボードの代
表的な一実施例を示す斜視図、第２図は表面材を
説明する説明図、第３図は本ボードの施工例を示
す説明図、第４図ａ〜ｉ、第５図ａ〜ｎ、第６図
ａ〜ｏ、第７図ａ〜ｊはその他の実施例を示す説
明図である。Ａ……サイデイングボード、１……表面材、２
……化粧面部、５……段差部、６……雄型連結
部、７……差込縁、８……溝部、９……補強リ
ブ、１３……補強片、１４……雌型連結部、１８
……嵌合溝、２０……芯材、２２……裏面材。 Fig. 1 is a perspective view showing a typical embodiment of the siding board according to the present invention, Fig. 2 is an explanatory drawing explaining the surface material, Fig. 3 is an explanatory drawing showing an example of the construction of the board, FIGS. a to i, FIGS. 5 a to n, FIGS. 6 a to o, and FIGS. 7 a to j are explanatory diagrams showing other embodiments. A...Siding board, 1 ...Surface material, 2
. . . Decorative surface portion, 5 . . . Step portion, 6 . , 18
... Fitting groove, 20 ... Core material, 22 ... Back material.

Claims

[Scope of utility model registration request]

A horizontally long metal plate or a synthetic resin plate is used as the surface material, a male type connecting part is provided at one end of the decorative surface part of the surface material, and a female type connecting part is provided at the other end, so that the cross section is formed into a substantially gutter shape. , and in a siding board in which at least the gutter-shaped portion of the surface material is filled with a core material and the back surface of the siding board is covered with a sheet-like back material, a step piece formed in the decorative surface portion in parallel with the longitudinal direction and the step piece. The surface material is formed into a step-like shape by forming at least one stepped part formed by folding the lower end inwardly and then outwardly to form a recessed part, and the male connecting part connects one end of the decorative surface part. A groove is provided by recessing it parallel to the longitudinal direction,
Fold the insert edge with the groove on the upper edge and the tip of the insert edge inward, then bend outward to make the cross section U.
It is formed from an engagement groove formed in a letter shape, an extension portion extending the lower edge of the engagement groove outward, and a reinforcing piece bent downward at the end edge of the extension portion, and a female connecting portion. is formed of a step piece with the other end of the decorative surface part bent downward, and a fitting groove fitted with the insertion edge bent inwardly in a U-shaped cross section at the lower end of the step piece, and A siding board characterized in that a core material bulges downward from the rear surface of an extension of a male connecting part and has a rectangular cross section so as to form a notch near the female connecting part.