JP3893090B2

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Info

Publication number: JP3893090B2
Application number: JP2002240849A
Authority: JP
Inventors: 昌幸荒谷; 純三上村; 茂男保前
Original assignee: ＹｋｋＡｐ株式会社
Priority date: 2002-08-21
Filing date: 2002-08-21
Publication date: 2007-03-14
Anticipated expiration: 2022-08-21
Also published as: JP2004076496A

Description

【０００１】
【発明の属する技術分野】
本発明は、外障子および内障子を備えた引違いのサッシ窓に関する。
【０００２】
【背景技術】
従来の引違いのサッシ窓において、閉鎖状態ある室内外の障子のち、外障子の室内側に入り込んだ雨水等は、下枠の室内外のレール間に設けられた排水口からその下部側の中空部に落とされた後、この中空部から排出孔を通って外部に排出される。
また、外部に開口したそのような排出孔は、外部からの風圧力を受け、雨水等が逆に排出孔からサッシ内に浸入するため、これを防止する必要がある。
このために従来では、下枠に溜まった雨水等の水頭圧によって水密性能を確保している。すなわち、排出孔が設けられた前記中空部分や、これと排水口を介して連通した室内外のレール間に雨水等を滞留させておき、この際の水頭圧を排出孔に作用させて風圧力に対抗させ、外部からの雨水の浸入を防いでいる。
以上の技術は、以下の特許文献１に記載された内容である。
【０００３】
【特許文献１】
実開昭５４−３２０３９号公報（第１〜第５図）。
【０００４】
【発明が解決しようとする課題】
しかし、激しい降雨時に何らかの理由で障子を開けた場合のように、大量の雨水が下枠に即座に滞留するような場合には、レール間から中空部を通っての排出がおぼつかず、室内側にあふれ出して水密性能が阻害される可能性がある。
また、レール間に滞留した雨水が室内側からそのまま内観視されると、水密性能に不安を覚える場合があり、使用者側からの問い合わせや苦情の原因となる。そして、このような不安感は、雨水をレール間に意図的に滞留させ、その際の水頭圧で水密性能を確保する場合でも、同様に生じることがある。
【０００５】
本発明の目的は、水密性能を良好に確保できるとともに、使用者側の不安も取り除くことができるサッシ窓を提供することにある。
【０００６】
【課題を解決するための手段】
本発明のサッシ窓は、上枠、下枠、および左右の縦枠で構成された窓枠と、この窓枠内に摺動自在に建て込まれた室内側の内障子および室外側の外障子とを備えたサッシ窓であって、前記下枠の室内側レールと室外側レールとの間には、当該下枠の底面を前記室内側レールから前記外障子の室内側面の下方近傍に対応した位置にわたって覆うカバー材と、前記室外側レールから前記カバー材側に向かう面状部とが設けられ、この面状部と前記カバー材との間には、当該カバー材および面状部の各上面側と前記下枠の底面側とを連通させる排水口が設けられているとともに、前記領域の長手方向の略全域が前記排水口になっており、前記面状部は、前記下枠の室内側レールと室外側レールとの間の前記外障子が閉鎖状態とされた位置に対応した領域にのみ設けられていることを特徴とする。
【０００７】
このようなサッシ窓では、室内外のレール間に配置されたカバー材と面状部との間を排水口とするので、この排水口が外障子に対応した領域の長手方向の略全域にわたって設けられるようになり、その分排水口が従来よりも大きく開口することになる。
従って、カバー材や面状部の上面側から底面側に向けては、大きな排水口によって雨水がスムーズに流れ落ち、排水性が格段に向上するため、風圧力が作用しない場合では、レール間に雨水等が滞留しにくくなって室内側にあふれ出す心配がなく、水密性能が良好に確保されるうえ、雨水等が内観視されず、不安を覚える心配もない。加えて、流れ落ちた雨水をカバー材や面状部の下部側に滞留させることで、滞留した雨水が内観視されたり、あふれる心配がない。
以上により、本発明の目的が達成される。
【０００８】
本発明のサッシ窓では、前記面状部は、前記カバー材の室外側に配置された当該カバー材とは別のカバー材で形成されていることが望ましい。
このようなサッシ窓によれば、各カバー材を取り外すことでメンテナンスが容易に行われるようになり、排出口に入り込んだ塵や埃等の排除も簡単になる。
【０００９】
これに対して本発明のサッシ窓では、前記面状部は、前記カバー材の室外側に一体に形成されていてもよく、また、前記下枠に一体に形成されていてもよく、このような場合には、部材点数が低減する。
【００１０】
一方、本発明のサッシ窓では、前記下枠の室内側レールを挟んで室内側には前記カバー材が設けられ、室外側には当該下枠の底面を覆うさらに別のカバー材が設けられ、室内側のカバー材と室外側のカバー材の少なくとも前記外障子の室内側面よりも室内側の部分とは、それぞれの上面が略同じ高さレベルとされ、これら室内外側のカバー材の下部側には、適切な水頭圧を確保するための水溜空間が設けられていることが望ましい。
【００１１】
このような本発明において、レール間に雨水等を意図的に滞留させ、その際の水頭圧によって水密性能を得る場合には、そのような雨水等をカバー材の下部側の水溜空間に十分に滞留させ、適切な水頭圧を作用させるので、水頭圧を利用した良好な水密性能が確実に得られる。また、滞留した雨水等は、そのカバー材によって覆われるから、室内側から内観視されず、使用者の不安感をあおる心配もない。これにより、やはり本発明の目的が達成される。
【００１２】
【発明の実施の形態】
〔全体構造〕
以下、本発明の一実施形態を図面に基づいて説明する。なお、各図では、サッシ窓１の断面が示されているのであるが、図面を見やすくするために、主要な構成部材については、その断面部分のハッチングを省略してある。
【００１３】
図１〜図４において、サッシ窓１は、引違い窓を構成するものであって、建物の開口部に取り付けられた窓枠１０と、この窓枠１０内に摺動可能に建て付けられた室内側の内障子２０（２０Ａ）および室外側の外障子２０（２０Ｂ）とを備え、外障子２０Ｂの室外側には網戸３０が建て付けられるようになっている。
【００１４】
窓枠１０は、上枠１１、下枠１２、および左右の縦枠１３を四周枠組みして構成されている。各枠１１〜１３はそれぞれ、アルミ押出形材製の室内部材１１１，１２１，１３１と、同様にアルミ押出形材製の室外部材１１２，１２２，１３２と、これらを連結する合成樹脂製の断熱部材１１３，１２３，１３３とを含んだ断熱形材で構成されている。この構成により、外気に触れる室外部材１１２，１２２，１３２の冷熱が室内部材１１１，１２１，１３１まで達しにくくなり、これら室内部材１１１，１２１，１３１での結露の発生が抑制される。
【００１５】
ここで、断熱部材１１３，１２３，１３３は、溶融した合成樹脂を室内外部材１１１，１２１，１３１，１１２，１２２，１３２間の対向するポケット部分に注入、硬化させることで形成されている。ただし、予めリジットな合成樹脂製の板状部材で断熱部材を形成してもよく、このような板状部材は、室内側部材間にかしめ等によって取り付けられる（図１に示す内障子２０Ａの後述する上框２１参照）。
【００１６】
上枠１１の室内部材１１１および室外部材１１２にはそれぞれ、下方に垂下した室内側レール１１４および室外側レール１１５が設けられている。室内側レール１１４では、内障子２０Ａの上部側が遊嵌してガイドされ、室外側レール１１５では、外障子２０Ｂの上部側が遊嵌してガイドされる。
【００１７】
下枠１２の室内部材１２１および室外部材１２２にもそれぞれ、上方に突設した室内側レール１２４および室外側レール１２５が設けられている。室内側レール１２４では、内障子２０Ａの下部側の戸車が転動してガイドされ、室外側レール１２５では、外障子２０Ｂの下部側の戸車が転動してガイドされる。下枠１２の室内端に設けられた水平な取付片１２６には、合成樹脂製の化粧部材１２７が嵌め込まれており、取付片１２６固定用のビスを隠すとともに、取付片１２６に結露が生じた場合でも、結露水が隠れて露出しないようになっている。
【００１８】
縦枠１３の断熱部材１３３は、室内外部材１３１，１３２に跨って取り付けられた合成樹脂製のカバー材１３４で覆われており、断熱部材１３３の紫外線による劣化を防止したり、断熱部材１３３が露出することで見た目が阻害されるのを防いでいる。
【００１９】
一方、障子２０は、上框２１、下框２２、および左右の竪框２３を四周枠組みした中に複層ガラス２４を嵌め込んだ構成であり、内外の障子２０Ａ，２０Ｂの召合せ部分に位置する竪框２３は、召合せ框２３Ａ，２３Ｂになっている。障子２０の各框２１〜２３（２３Ａ）も基本的に、アルミ押出形材製の室内部材２１１，２２１，２３１と、同じくアルミ押出形材製の室外部材２１２，２２２，２３２と、これらを連結する合成樹脂製の断熱部材２１３，２２３，２３３とを含んだ断熱形材で構成されているが、外障子２０Ｂの召合せ框２３Ｂは、全体がアルミ押出形材製であり、断熱部材を有していない。これは、障子２０の閉鎖状態において、召合せ框２３Ｂの略全体が外気に触れるからである。
【００２０】
〔下枠構造〕
以下には、本実施形態での最も特徴的な構成を有する窓枠１０の下枠１２について、図１ないし図４の他、図５および図６をも参照して詳説する。なお、図５は、下枠１２を示す斜視図、図６は、図３の断面での水頭圧Ｈを説明するための縦断面図である。
【００２１】
下枠１２の室内側レール１２４および室外側レール１２５の間には、下枠１２の長手方向に沿った立上片１４が設けられている。この立上片１４は、下枠１２の押出成型時（室内外部材１２１，１２２が一体とされた状態での押出成形時）に一体に形成される。立上片１４の長手方向の略中央は所定幅で切り欠かれており、この切り欠き部分には、各レール１２４，１２５間に位置するように、箱状の風止め部材４０（図１、図２、図５）が嵌め込まれている。風止め部材４０の配置位置は、閉鎖状態の各障子２０Ａ，２０Ｂの丁度召合せ框２３Ａ，２３Ｂにの直下に対応しており、各レール１２４，１２５間においては、当該間風止め部材４０から図５に示す右側の領域Ａが、本発明に係る「外障子が閉鎖状態とされた位置に対応した領域」に相当する。
【００２２】
この領域Ａにおいて、室内外レール１２４，１２５間の室内側には合成樹脂製の第１カバー材１５が配置され、室外側にはアルミ押出形材製の第２カバー材１６が配置されている。また、室内側レール１２４を挟んで、第１カバー材１５の室内側にも、アルミ押出形材製の第３カバー材１７が配置されている。
【００２３】
第１カバー材１５は、室内端縁が室内側レール１２４の上下方向の中間位置に、室外端縁が前記立上片１４の上端に、それぞれ係脱自在に係止されている。これにより、下枠１２の底面１８は、室内側レール１２４から外障子２０Ｂの室内側面２５の下方近傍に対応した位置にわたり、底面１８から離間した高さの高い位置で覆われることになる。
【００２４】
また、立上片１４、底面１８、および室内側レール１２４で仕切られた大きな空間は、上方が当該第１カバー材１５で覆われた水溜空間Ｂになっている。このような第１カバー材１５は、風止め部材４０を挟んで反対側、すなわち内障子２０Ａの閉鎖状態とされた位置側にも配置されているうえ、室内外部材１２１，１２２間に跨ることで、下枠１２の断熱部材１２３をもほぼ全長にわたって覆っている。
【００２５】
第２カバー材１６は、室外側レール１２５の上下方向の途中から第１カバー材１５側に向けて下り勾配を有した面状部１６１を備え、面状部１６１の室内外の両側に設けられた一対の脚部１６２により、室外側レール１２５および立上片１４の下端側に係脱自在に係止されている。この第２カバー材１６は、領域Ａにのみ配置されており、風止め部材４０を挟んで反対側には配置されていない。
【００２６】
そして、第２カバー材１６に設けられた面状部１６１の室内側端縁と第１カバー材１５の室外側端縁との間の隙間は、長手方向に沿って連続した排水口５１になっている。従って、この排水口５１は、領域Ａの長手方向に連続した大きな開口面積を有することになり、第１カバー材１５の上面や第２カバー材１６（の面状部１６１）の上面に落ちた雨水や結露水等が、よりスムーズに下枠１２の底面１８に流れ落ちるようになっている。
【００２７】
ここで、図５に示すように、領域Ａでの室外側レール１２５の端部には、上端から第２カバー材１６の当接位置まで切り欠かれた切欠部１２８が設けられている。この切欠部１２８は、下枠１２上の塵や埃を領域Ａ側から掃き出すためであり、切欠部１２８の下側には、室外側レール１２５の一部が残っている。この残った部分は、図３に示す外障子２０Ｂの下側のシール材２６が接触するようになっており、切欠部１２８から雨水等が浸入しにくくなっている。
【００２８】
第３カバー材１７は、第１カバー材１５の上面と略同じ高さレベルに位置した面状部１７１を備え、面状部１７１の室内外の両側に設けられた一対の脚部１７２により、室内側レール１２４および室内側の立上壁１２９の下端側に係脱自在に係止されている。このような第３カバー材１７は、下枠１２の長手方向の全長にわたって連続して設けられている。
【００２９】
そして、第３カバー材１７の室外側端縁と室内側レール１２４との間の隙間は、それぞれの長手方向に沿って連続した室内側の排水口５２になっており、第３カバー材１７の上面に落ちた雨水や結露水が排水口５２から下枠１２の底面１８に向かって落ちる。また、下枠１２の底面１８、室内側レール１２４、および立上壁１２９で仕切られた空間は、上方が当該第３カバー材１７で覆われた別の水溜空間Ｃになっている。
【００３０】
〔配水経路〕
次に、図３ないし図５に基づき、雨水や結露水（以下では、これらを代表して雨水等と称する場合がある）の排水経路について説明する。
閉鎖状態とされた外障子２０Ｂ側では、図３および図５に示すように、外障子２０Ｂの複層ガラス２４と框組みとの間に浸み入った雨水等は、下方に流れ落ちて第１、第２カバー材１５，１６の上面に達すると、排水口５１に入り込んで当該上面と連通した下枠１２の底面１８に落下する。この後に雨水等は、第２カバー材１６の脚部１６２に設けられた水抜き孔（符号略）を通り、底面１８の所定位置に穿設された水抜き孔５３から下方の中空部５４に入り込む。次いで、雨水等は中空部５４内に所定量溜まった時点で、当該中空部５４の室内側に設けられた逆止弁５５を開き、この逆止弁５５から外部に排水される。
【００３１】
また、外障子２０Ｂ側では、第３カバー材１７上に導かれた雨水等は、排水口５２に入り込んで水溜空間Ｃに落下した後、室内側レール１２４に設けられた水抜き孔５６から水溜空間Ｂに入り込み、下枠１２の底面１８を伝って立上片１４の水抜き孔（符号略）を通過し、同様に底面１８の水抜き孔５３から中空部５４に入り込んで逆止弁５５から排出される。
【００３２】
一方、図４および図５に示すように、閉鎖状態とされた内障子２０Ａ側では、その室内側において、内障子２０Ａから第３カバー材１７上に達した雨水等は、排水口５２に入り込んで水溜空間Ｃに落下した後、この水溜空間Ｃを外障子２０Ｂ側、すなわち図５中の右側に流れ、室内側レール１２４の水抜き孔５６から水溜空間Ｂに入り込む。この後は前述の通りである。このように、室内側レール１２４の水抜き孔５６は、風止め部材４０よりも領域Ａ側にのみ設けられており、第３カバー材１７上の雨水等は全て、流域Ａ内に形成された水溜空間Ｂに入り込む。
【００３３】
さらに、内障子２０Ａの室外側では、第１カバー材１５（第２カバー材１６は存在しない）上に降り注いだ雨水は、そのまま下枠１２の底面１８を伝い、室外側レール１２５に設けられた水抜き孔５６や、室外側レール１２５の端部を廻って室外側に流れ、外部に流れ落ちる。
【００３４】
ところで、本実施形態では、内外の障子２０Ａ、２０Ｂの召合せ框２３Ａ，２３Ｂの直下に、風止め部材４０（図５）が設けられており、召合せ框２３Ａ，２３Ｂ間に入り込んだ雨水は、これらを伝って下方の風止め部材４０に流れ落ちる。このために風止め部材４０では、雨水が集約される部分に開口部４１が設けられ、この開口部４１に対応した下枠１２の底面１８にも水抜き孔５３が設けられ、風止め部材４０に落ちた雨水がそのまま、水抜き孔５３から下枠１２の中空部５４に入り込み、逆止弁５５から排出される。
【００３５】
〔水頭圧による止水〕
以上は、サッシ窓１に風圧力が殆ど作用しない場合であったが、激しい降雨と共に強風によってサッシ窓１に大きな風圧力が作用する場合には、例えば下枠１２とその両側の縦枠１３との接合部分の僅かな隙間にも風圧力が作用し、その隙間から雨水がサッシ窓１の内部に浸入するおそれがある。そこで、本実施形態のサッシ窓１では、図６に示すように、そのような隙間および逆止弁５５に作用する風圧力Ｐに対抗できるよう、適切な水頭圧Ｈが生じるように構成されている。
【００３６】
具体的には、風圧力Ｐで逆止弁が開放しないことで、下枠１２の中空部５４が雨水等で満たされるとともに、領域Ａ内においては、水溜空間Ｂを略満たす水位まで雨水等で満たされる。そして、水溜空間Ｂと水抜き孔５６で連通している水溜空間Ｃにも、同じ水位で雨水等が溜まるようになっている。
【００３７】
この際、下枠１２の底面１８上に溜まった雨水等は、室内側レール１２４の前後（室内外）では、第１、第３カバー材１５，１７で隠され、内観視されない。また、室外側レール１２５の直ぐ室内側では、第２カバー材１６の面状部１６１の一部が沈むほどの高い水位となるが、この部分は外障子２０Ｂを構成する下框２２の室内側面２５によって遮られ、やはり内観視されることはない。
【００３８】
このような状態で、下枠１２に雨水等がさらに溜まろうとすると、水頭圧が大きくなり、逆止弁５５や前述の隙間に作用する風圧力Ｐに打ち勝つため、逆止弁５５が開いたり、隙間から浸み出す等して余分な雨水等が排出され、水位が確保されて適切な水頭圧Ｈが維持される。なお、風が弱まって風圧力Ｐがなくなると、逆止弁５５が開き、雨水等の殆どが逆止弁５５から外部に排出される。
【００３９】
なお、図７には、下枠１２と縦枠１３との接合部分が図４と同じ断面視で示されている。この図に示すように、下枠１２と縦枠１３との間には、ゴム製でシート状のシール材５８が介装されている。このシール材５８により、下枠１２および縦枠１３間の実際の隙間は極僅かであり、水密性能の向上が図られている。
【００４０】
さらに、このようなシール材５８の上端面５９には、縦枠１３の室内外部材１３１，１３２間に跨って配置されたカバー材１３４（図２も参照）の下端面が当接されている。このため、カバー材１３４が係止される引寄片１３８や係止片１３９は、シール材５８との干渉を避けるために切り欠かれている。すなわち、各枠１２，１３の接合部分では、水密性能の向上と縦枠１３での断熱部材１３３の遮蔽との両方を満足させる納まりが可能になっている。
【００４１】
このような本実施形態によれば、以下のような効果がある。
(１) すなわち、サッシ窓１の窓枠１０では、下枠１２の室内側レール１２４および室外側レール１２５間の排水口５１が、外障子２０Ｂに対応した領域Ａの長手方向の略全域にわたって設けられているので、この排水口５１を従来よりも大きく開口させることができ、雨水等の排出をよりスムーズにできる。このため、逆止弁５５等に風圧力Ｐがさほど作用しない場合では、各レール１２４，１２５間に雨水等が滞留しにくくなって室内側にあふれ出すのを防止でき、良好な水密性能を確保できる。また、雨水等が滞留しないことで内観視されないから、使用者が不安を覚える心配もない。
【００４２】
(２) 大きな開口の排水口５１は、第１、第２カバー材１５，１６の隙間によって形成されており、下枠１２の底面１８に直に穿設されているわけではないので、下枠１２の強度を大きく維持しつつ、排水性を向上させることができる。
【００４３】
(３) また、排水口５１は、領域Ａの長手方向に連続した大きな開口面積で設けられているため、より大きな開口を形成できて、排水性をさらに向上させることができるとともに、ペットの毛や、塵、埃等も詰まりにくくでき、排水性を良好に維持できる。
【００４４】
(４) 下枠１２の底面１８に設けられた水抜き孔５３は、従来に比してさほど大きなものではないが、各カバー材１５〜１７上から排水される雨水等が多い場合には、その雨水等を排水口５１からの落下後に第１、第３カバー材１５，１７の下方の水溜空間Ｂ，Ｃや、第２カバー部材の面状部１６１下方の空間等に一時的に溜めておくことができるため、それらのカバー材１５，１６，１７上から雨水を排水させるあたっては、排水性に何ら影響を及ぼさず、この点でも排水性を良好に維持できる。
【００４５】
(５) そして、上述のように下枠１２上に一時的に雨水等が溜まったり、あるいは水頭圧Ｈを得るために、下枠１２上に雨水等を意図的に滞留させた場合でも、そのような雨水等を第１、第３カバー材１５，１７で隠すことができ、前述と同様に使用者に不安感を抱かせるのを防止できる。
【００４６】
(６) 特に水頭圧Ｈが得られる状態に雨水等が滞留した場合には、第２カバー材１６の面状部１６１の一部が沈む程に水位が上がるのであるが、この第２カバー材１６側では、外障子２０Ｂの室内側面２５で隠されるため、雨水等は同様に内観視されることがなく、やはり不安感を抱かせることがない。
【００４７】
(７) この際、第１、第３カバー材１５，１７の下部側は水溜空間Ｂ，Ｃになっているので、雨水等を十分に溜めることができ、適切な水頭圧Ｈを確実に得ることができる。
【００４８】
(８) 第２カバー材１６が設けられていることにより、外障子２０Ｂを開けた場合などに、その下方に現れる底面１８の水抜き孔５３や、この水抜き孔５３に設けられる図示しないフィルタ等を隠すことができ、内観性や外観性が損なわれるのを防止できる。
【００４９】
(９) さらに、第２カバー材１６の面状部１６１は、室外側レール１２５の上下方向の途中から設けられているので、室外側レール１２５での掃き出し用の切欠部１２８を、上端から僅かに切り欠くだけで形成できる。従って、そのような切欠部１２８の下部側には、依然として室外側レール１２５の一部を残しておくことができ、この部分に外障子２０Ｂのシール材２６を当接させることにより、外障子２０Ｂの下部側と室外側レール１２５との間での水密性能も向上させることができる。
【００５０】
(10) そのような面状部１６１は、下枠１２に対して係脱自在な第２カバー材１６で形成されているため、第２カバー材１６を取り外すことでメンテナンスを容易にでき、排水口５１から入り込んで底面１８に集まった塵や埃等の排除も簡単にできる。加えて、第１、第３カバー材１５，１７も下枠１２に対して係脱自在であるから、これらのカバー材１５，１７を外すことでも、メンテナンスを簡単にできる。
【００５１】
(11) 第１カバー材１５は一対用いられ、下枠１２の略全長にわたって設けられているため、滞留した雨水等だけではなく、下枠１２の断熱部材１２３をも良好に隠すことができ、日光による断熱部材１２３の紫外線劣化等を抑制できる。縦枠１３の断熱部材１３３もまた、カバー材１３４で覆われているから、この断熱部材１３３の劣化も確実に防止でき、見た目も良好にできる。そして、これらのカバー材１５，１３４は、合成樹脂製であるから、各枠１２，１３の室内外部材１２１，１２２，１３１，１３２間に跨って配置されていても、断熱性能を何ら低下させるおそれがない。
【００５２】
なお、本発明は、前記実施形態に限定されるものではない。
例えば、前記実施形態では、外障子２０Ｂの下方に位置した面状部１６１が第２カバー材１６で形成されていたが、図８に示すように、押出成型される下枠１２の中空部分の一部として一体に形成し、これにより本発明の請求項４を構成してもよい。このような場合でも、面状部１６１の下流側（室内側）に複数の切り欠きによる排水口５１を設け、この排水口５１を領域Ａの長手方向の略全域にわたって設ければ、良好な排水性が得られる。また、面状部１６１を形成するためのカバー材が不要であるため、部品点数を低減できるという効果もある。
ただし、複数の切り欠きにより排水口５１を設ける他、前記実施形態と同様に、面状部１６１の室内側と第１カバー材１５の室外側との間に隙間を設け、この隙間を排水口としてもよい。
【００５３】
また、第１カバー材１５と第２カバー材１６とを一体に設けた一体型カバー材を用い、この一体型カバー材に対して領域Ａの長手方向の略全域にわたる排出口を設けることで本発明の請求項３を構成してもよく、この場合でも、部品点数を低減できるという効果がある。
なお、このような構成では、排水口を領域Ａの長手方向に沿って連続させることが困難であるため（カバー材が分離し、一体とならない可能性があるから）、複数の切り欠きによって排水口を設けることになる。
つまり、排水口は領域Ａの長手方向にわたって設けられていればよく、排水口を切り欠きによって不連続に設けるか、あるいは連続させて設けるかは、第１カバー材および面状部の構造を勘案して任意に決められてよい。
【００５４】
さらに、このような一体型のカバー材を第３カバー材１７と略同じ高さに設け、これにより本発明の請求項５を構成してもよい。
【００５５】
前記実施形態や図８に示す変形例では、面状部１６１が設けられ、この面状部１６１は、本発明の請求項１には必須の構成であった。しかし、このような面状部１６１は、本発明の請求項５では必須の構成ではなく、省略可能である。
逆に、前記実施形態では、第１カバー材１５と第３カバー材とは略同じ高さレベルに設けられていたが、図８に示すように、互いに大きく高さ違いに設けられた場合でも、請求項１の発明に含まれる。
【００５６】
前記実施形態では、下枠１２に逆止弁５５が取り付けられ、雨水等がこの逆止弁５５を通して外部に排出されていたが、このような逆止弁５５が設けられず、単なる排出孔を設けた場合でも、本発明に含まれる。ただし、逆止弁５５を設けることで、水頭圧Ｈを小さく設定できるうえ、下枠１２全体の見付け寸法（高さ寸法）を小さくできる。
【００５７】
また、本発明に係る窓枠の枠材および障子の框材は、前記実施形態のような断熱形材を用いたものに限定されず、アルミ押出形材のみで構成されていてもよく、アルミ押出形材と合成樹脂との複合材、アルミ押出形材と合成木との複合材、アルミ押出形材と天然木との複合材、あるいは合成樹脂単体などといった任意の形態の材料で構成可能である。
【００５８】
【発明の効果】
以上に述べたように、本発明のサッシ窓によれば、水密性能を良好に確保でき、かつ使用者側の不安も取り除くことができるという効果がある。
【図面の簡単な説明】
【図１】本発明の一実施形態に係るサッシ窓を示す縦断面図である。
【図２】サッシ窓の横断面図である。
【図３】サッシ窓の要部を拡大して示す縦断面図（図２のIII-III線断面図）である。
【図４】サッシ窓の要部を拡大して示す縦断面図（図２のIV-IV線断面図）である。
【図５】サッシ窓の下枠を示す斜視図である。
【図６】図３の断面での水頭圧を説明するための縦断面図である。
【図７】下枠と縦枠の接合部分を説明するための縦断面図である。
【図８】本発明の変形例を示す縦断面図である。
【符号の説明】
１…サッシ窓、１０…窓枠、１１…上枠、１２…下枠、１３…縦枠、１５…請求項１および請求項５に係る室外側のカバー材である第１カバー材、１６…請求項２に係る別のカバー材である第２カバー材、１７…請求項５に係る室内側のカバー材である第３カバー材、１８…底面、２０Ａ…内障子、２０Ｂ…外障子、２５…室内側面、５１…排水口、１２４…室内側レール、１２５…室外側レール、１６１…面状部、Ａ…領域、Ｈ…水頭圧、Ｂ、Ｃ…水溜空間。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sliding sash window provided with an outer and inner shoji.
[0002]
[Background]
In a conventional sliding sash window, rainwater that enters the indoor side of the shoji after the indoor and outdoor shoji is closed from the drainage port provided between the indoor and outdoor rails on the lower frame to the lower side. After being dropped to the part, it is discharged to the outside through the discharge hole from this hollow part.
Further, such a discharge hole opened to the outside receives wind pressure from the outside, and rainwater or the like enters the sash from the discharge hole on the contrary, so it is necessary to prevent this.
For this reason, conventionally, watertight performance is ensured by water head pressure such as rainwater collected in the lower frame. That is, rainwater or the like is retained between the hollow part provided with the discharge hole or the indoor / outdoor rail communicated with the hollow part via the drain port, and the head pressure at this time is applied to the discharge hole to thereby reduce the wind pressure. To prevent rainwater from entering from the outside.
The above technique is described in Patent Document 1 below.
[0003]
[Patent Document 1]
Japanese Utility Model Laid-Open No. 54-32039 (FIGS. 1 to 5).
[0004]
[Problems to be solved by the invention]
However, if a large amount of rainwater immediately accumulates in the lower frame, such as when the shoji is opened for some reason during heavy rain, the drainage between the rails through the hollow part will not be There is a possibility that the watertight performance will be hindered due to overflowing inside.
Further, if rainwater staying between the rails is inspected as it is from the indoor side, the watertight performance may be anxious, which may cause inquiries and complaints from the user side. Such anxiety may occur in the same manner even when rainwater is intentionally retained between the rails and watertight performance is ensured by the water head pressure at that time.
[0005]
An object of the present invention is to provide a sash window that can secure a watertight performance well and can remove the user's anxiety.
[0006]
[Means for Solving the Problems]
The sash window of the present invention includes a window frame composed of an upper frame, a lower frame, and left and right vertical frames, and a room-side inner and outer door-side obstacles slidably built in the window frame. A sash window comprising: an indoor rail and an outdoor rail of the lower frame. In the meantime, the bottom frame A cover material that covers the bottom surface of the cover from a position corresponding to the vicinity of the lower side of the indoor side surface of the shoji from the indoor rail, and a planar portion that extends from the outdoor rail toward the cover material side. And the cover material In the meantime, the cover material And a drain port for communicating each upper surface side of the planar portion and the bottom surface side of the lower frame. In addition, substantially the entire area in the longitudinal direction of the region is the drainage port, and the planar portion is in a state in which the outer cover between the indoor rail and the outdoor rail of the lower frame is closed. Provided only in the area corresponding to the position It is characterized by that.
[0007]
In such a sash window, since the drainage port is provided between the cover material disposed between the indoor and outdoor rails and the planar portion, the drainage port is provided over substantially the entire region in the longitudinal direction of the region corresponding to the external shoji. As a result, the drainage opening will be larger than before.
Therefore, from the top side to the bottom side of the cover material or planar part, rainwater flows down smoothly due to a large drainage port, and drainage performance is greatly improved. It is difficult to stay in the room, and there is no fear of overflowing to the indoor side, watertight performance is ensured well, rainwater etc. are not introspected, and there is no worry of anxiety. In addition, the rainwater that has flowed down is retained on the lower side of the cover material or the planar portion, so that the retained rainwater is not introspected or overflowed.
Thus, the object of the present invention is achieved.
[0008]
In the sash window of the present invention, it is preferable that the planar portion is formed of a cover material different from the cover material disposed on the outdoor side of the cover material.
According to such a sash window, maintenance can be easily performed by removing each cover material, and it is also easy to remove dust, dust, and the like that have entered the discharge port.
[0009]
On the other hand, in the sash window of the present invention, the planar portion may be integrally formed on the outdoor side of the cover material, or may be integrally formed on the lower frame. In such a case, the number of members is reduced.
[0010]
Meanwhile, the sash window of the present invention Then, the lower frame The cover material is provided on the indoor side across the indoor rail, and another cover material for covering the bottom surface of the lower frame is provided on the outdoor side. The cover material for the indoor side and the cover material for the outdoor side are provided. At least the interior side of the indoor side surface of the above-mentioned shoji screen is such that the upper surface thereof is at substantially the same level, and a water reservoir for ensuring an appropriate water head pressure is provided on the lower side of the indoor outside cover material. It is desirable that a space is provided.
[0011]
In the present invention, when rainwater or the like is intentionally retained between the rails and watertight performance is obtained by the water head pressure at that time, such rainwater or the like is sufficiently stored in the water reservoir space on the lower side of the cover material. Since it is retained and an appropriate water head pressure is applied, a good watertight performance utilizing the water head pressure can be surely obtained. Further, the accumulated rainwater and the like are covered with the cover material, so that they are not viewed from the indoor side, and there is no fear of anxiety of the user. This also achieves the object of the present invention.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
[Overall structure]
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In each drawing, the cross section of the sash window 1 is shown. However, in order to make the drawing easy to see, the cross-sectional portion of the main constituent members is not hatched.
[0013]
1 to 4, the sash window 1 constitutes a sliding window, and is slidably built in the window frame 10 attached to the opening of the building and the window frame 10. The indoor door 20 (20A) and the outdoor door 20 (20B) are provided, and a screen door 30 is built on the outdoor side of the door 20B.
[0014]
The window frame 10 is configured by an upper frame 11, a lower frame 12, and left and right vertical frames 13 having a four-round frame. Each of the frames 11 to 13 includes an indoor member 111, 121, 131 made of aluminum extruded shape, an outdoor member 112, 122, 132 made of aluminum extruded shape, and a heat insulating member made of synthetic resin that connects them. It is comprised with the heat insulation shape material containing 113,123,133. With this configuration, the cold heat of the outdoor members 112, 122, and 132 that come into contact with the outside air hardly reaches the indoor members 111, 121, and 131, and the occurrence of condensation in the indoor members 111, 121, and 131 is suppressed.
[0015]
Here, the heat insulating members 113, 123, and 133 are formed by injecting and curing molten synthetic resin into opposing pocket portions between the indoor and outdoor members 111, 121, 131, 112, 122, and 132. However, the heat insulating member may be formed in advance by a rigid synthetic resin plate-like member, and such a plate-like member is attached between the indoor side members by caulking or the like (described later on the inner pouch 20A shown in FIG. 1). See upper arm 21).
[0016]
The indoor member 111 and the outdoor member 112 of the upper frame 11 are respectively provided with an indoor rail 114 and an outdoor rail 115 that hang downward. In the indoor side rail 114, the upper side of the inner shoji 20A is loosely fitted and guided, and in the outdoor side rail 115, the upper side of the outer shoji 20B is loosely fitted and guided.
[0017]
The indoor member 121 and the outdoor member 122 of the lower frame 12 are also provided with an indoor rail 124 and an outdoor rail 125 that protrude upward. The indoor side rail 124 rolls and guides the lower side doorwheel of the inner shoji 20A, and the outdoor side rail 125 rolls and guides the lower door wheel of the outer obstacle 20B. A synthetic resin decorative member 127 is fitted into a horizontal mounting piece 126 provided at the indoor end of the lower frame 12 to conceal a screw for fixing the mounting piece 126 and to cause condensation on the mounting piece 126. Even in this case, the condensed water is hidden and not exposed.
[0018]
The heat insulating member 133 of the vertical frame 13 is covered with a synthetic resin cover material 134 that is mounted across the indoor / outdoor members 131 and 132 to prevent the heat insulating member 133 from being deteriorated by ultraviolet rays, or the heat insulating member 133 is Exposure prevents the appearance from being obstructed.
[0019]
On the other hand, the shoji 20 has a structure in which a multi-layer glass 24 is fitted into a quadruple frame of an upper eave 21, a lower eave 22 and left and right eaves 23, and is located at the summing portion of the inner and outer shojis 20A and 20B. The sushi 23 is a summon sushi 23A, 23B. Each of the shojis 20 to 23 (23A) of the shoji 20 is also basically connected to the indoor members 211, 221, 231 made of extruded aluminum and the outdoor members 212, 222, 232 made of extruded aluminum. It is composed of a heat insulating shape material including heat insulating members 213, 223, and 233 made of synthetic resin, but the summoning ridge 23B of the shoji 20B is entirely made of an aluminum extruded shape material and has a heat insulating member. Not done. This is because, in the closed state of the shoji 20, almost the entire summoning bowl 23B is exposed to the outside air.
[0020]
[Bottom frame structure]
Hereinafter, the lower frame 12 of the window frame 10 having the most characteristic configuration in the present embodiment will be described in detail with reference to FIGS. 5 and 6 in addition to FIGS. 1 to 4. 5 is a perspective view showing the lower frame 12, and FIG. 6 is a longitudinal sectional view for explaining the hydraulic head pressure H in the section of FIG.
[0021]
A rising piece 14 is provided between the indoor rail 124 and the outdoor rail 125 of the lower frame 12 along the longitudinal direction of the lower frame 12. The rising piece 14 is integrally formed when the lower frame 12 is extruded (when the indoor and outdoor members 121 and 122 are integrated). A substantially center in the longitudinal direction of the upright piece 14 is cut out with a predetermined width, and a box-shaped windbreak member 40 (FIG. 1, FIG. 1) is provided in the cutout portion so as to be positioned between the rails 124 and 125. 2 and 5) are fitted. The arrangement position of the windshield member 40 corresponds to the position immediately below the summons 23A and 23B of the respective shoji screens 20A and 20B in the closed state. The area A on the right side shown in FIG. 5 corresponds to the “area corresponding to the position where the handicapped child is closed” according to the present invention.
[0022]
In this area A, a first cover material 15 made of synthetic resin is arranged on the indoor side between the indoor and outdoor rails 124 and 125, and a second cover material 16 made of an aluminum extruded profile is arranged on the outdoor side. . A third cover member 17 made of an extruded aluminum material is also disposed on the indoor side of the first cover member 15 with the indoor rail 124 interposed therebetween.
[0023]
The first cover member 15 is detachably locked with an indoor edge at an intermediate position in the vertical direction of the indoor rail 124 and an outdoor edge at the upper end of the upright piece 14. As a result, the bottom surface 18 of the lower frame 12 is covered at a high position separated from the bottom surface 18 over a position corresponding to the vicinity of the lower side of the indoor side surface 25 of the outer panel 20B from the indoor side rail 124.
[0024]
In addition, a large space partitioned by the rising piece 14, the bottom surface 18, and the indoor side rail 124 is a water reservoir space B whose upper portion is covered with the first cover material 15. Such a first cover member 15 is arranged on the opposite side of the windshield member 40, that is, on the side where the inner sward 20A is closed, and straddles between the indoor and outdoor members 121 and 122. Thus, the heat insulating member 123 of the lower frame 12 is also covered over almost the entire length.
[0025]
The second cover member 16 includes a planar portion 161 having a downward slope toward the first cover member 15 from the middle of the outdoor rail 125 in the vertical direction, and is provided on both sides of the planar portion 161 inside and outside the room. The pair of legs 162 are detachably locked to the outdoor rail 125 and the lower end side of the rising piece 14. The second cover material 16 is disposed only in the region A, and is not disposed on the opposite side across the windshield member 40.
[0026]
And the clearance gap between the indoor side edge of the planar part 161 provided in the 2nd cover material 16 and the outdoor side edge of the 1st cover material 15 becomes the drain port 51 which followed the longitudinal direction. ing. Accordingly, the drain port 51 has a large opening area continuous in the longitudinal direction of the region A, and falls on the upper surface of the first cover material 15 and the upper surface of the second cover material 16 (the planar portion 161). Rain water, dew condensation water, etc. flow more smoothly to the bottom surface 18 of the lower frame 12.
[0027]
Here, as shown in FIG. 5, a cutout portion 128 cut out from the upper end to the contact position of the second cover member 16 is provided at the end portion of the outdoor rail 125 in the region A. This notch 128 is for sweeping out dust and dirt on the lower frame 12 from the region A side, and a part of the outdoor rail 125 remains below the notch 128. This remaining portion comes into contact with the lower sealant 26 shown in FIG. 3 so that rainwater or the like is less likely to enter from the notch 128.
[0028]
The third cover member 17 includes a planar portion 171 located at substantially the same height level as the upper surface of the first cover member 15, and a pair of leg portions 172 provided on both sides of the planar portion 171 inside and outside the room, The indoor side rail 124 and the indoor side upright wall 129 are detachably locked to the lower end side. Such a third cover member 17 is provided continuously over the entire length of the lower frame 12 in the longitudinal direction.
[0029]
And the clearance gap between the outdoor side edge of the 3rd cover material 17 and the indoor side rail 124 becomes the indoor side drain outlet 52 which followed each longitudinal direction, Rain water or condensed water that has fallen on the upper surface falls from the drain port 52 toward the bottom surface 18 of the lower frame 12. In addition, the space partitioned by the bottom surface 18 of the lower frame 12, the indoor side rail 124, and the rising wall 129 is another water reservoir space C whose upper portion is covered with the third cover member 17.
[0030]
[Water distribution route]
Next, a drainage route for rainwater and condensed water (hereinafter, these may be referred to as rainwater or the like) will be described with reference to FIGS.
As shown in FIG. 3 and FIG. 5, rainwater or the like that has soaked between the double-glazed glass 24 and the braid of the shingles 20B flows down downward on the side of the shingles 20B in the closed state. When reaching the upper surfaces of the second cover members 15, 16, they enter the drain 51 and fall onto the bottom surface 18 of the lower frame 12 communicating with the upper surface. After this, rainwater or the like passes through a drain hole (reference numeral omitted) provided in the leg portion 162 of the second cover member 16, and enters the hollow portion 54 below from the drain hole 53 formed at a predetermined position on the bottom surface 18. Get in. Next, when a predetermined amount of rainwater or the like is accumulated in the hollow portion 54, the check valve 55 provided on the indoor side of the hollow portion 54 is opened, and the check valve 55 is drained to the outside.
[0031]
On the side of the shoji 20B, rainwater or the like guided onto the third cover member 17 enters the drain port 52 and falls into the water reservoir space C, and then collects water from a drain hole 56 provided in the indoor rail 124. It enters the space B, passes through the bottom hole 18 of the lower frame 12, passes through the drain hole (reference numeral omitted) of the rising piece 14, and similarly enters the hollow portion 54 from the drain hole 53 of the bottom face 18 to check valve 55. Discharged from.
[0032]
On the other hand, as shown in FIG. 4 and FIG. 5, on the side of the inner limb 20 </ b> A in the closed state, rainwater or the like that has reached the third cover member 17 from the inner limb 20 </ b> A enters the drain outlet 52. After falling into the water pool space C, the water pool space C flows to the side of the external obstacle 20B, that is, the right side in FIG. 5, and enters the water pool space B from the drain hole 56 of the indoor rail 124. After this, it is as described above. As described above, the drain hole 56 of the indoor rail 124 is provided only on the region A side with respect to the windshield member 40, and all rainwater and the like on the third cover member 17 are formed in the basin A. Enter the water pool space B.
[0033]
Further, on the outdoor side of the inner shoji 20A, rainwater that has poured onto the first cover member 15 (the second cover member 16 does not exist) travels along the bottom surface 18 of the lower frame 12 and is provided on the outdoor rail 125. It flows around the drain hole 56 and the end of the outdoor rail 125, flows to the outdoor side, and flows down to the outside.
[0034]
By the way, in this embodiment, the windshield member 40 (FIG. 5) is provided just under the summing rods 23A and 23B of the inner and outer shojis 20A and 20B, and rainwater that has entered between the summing rods 23A and 23B Then, they flow down to the windshield member 40 below. Therefore, in the windshield member 40, an opening 41 is provided in a portion where rainwater is collected, and a water drain hole 53 is also provided in the bottom surface 18 of the lower frame 12 corresponding to the opening 41. Rainwater that has fallen into the water enters the hollow portion 54 of the lower frame 12 through the drain hole 53 and is discharged from the check valve 55.
[0035]
[Water stop by water head pressure]
The above is a case in which the wind pressure hardly acts on the sash window 1. However, when a large wind pressure acts on the sash window 1 due to strong wind and heavy rain, for example, the lower frame 12 and the vertical frames 13 on both sides thereof. Wind pressure also acts on a slight gap in the joint portion, and rainwater may enter the sash window 1 from the gap. Therefore, in the sash window 1 of the present embodiment, as shown in FIG. 6, an appropriate water head pressure H is generated so as to counter such a gap and the wind pressure P acting on the check valve 55. Yes.
[0036]
Specifically, since the check valve is not opened by the wind pressure P, the hollow portion 54 of the lower frame 12 is filled with rainwater or the like, and in the region A, rainwater or the like reaches a water level that substantially fills the water reservoir space B. It is filled. Rainwater or the like is also stored in the water reservoir space C communicating with the water reservoir space B through the water drain hole 56 at the same water level.
[0037]
At this time, rainwater or the like accumulated on the bottom surface 18 of the lower frame 12 is hidden by the first and third cover members 15 and 17 before and after the indoor rail 124 (inside and outside) and is not viewed internally. Further, on the indoor side immediately after the outdoor rail 125, the water level becomes so high that a part of the planar portion 161 of the second cover member 16 sinks, but this portion is the indoor side surface of the lower eyelid 22 constituting the external shoji 20B. It is blocked by 25 and will not be introspected.
[0038]
In this state, if rainwater or the like further accumulates in the lower frame 12, the water head pressure increases, and the check valve 55 opens to overcome the check valve 55 or the wind pressure P acting on the aforementioned gap. Excess rainwater or the like is discharged by leaching out of the gap, and the water level is secured and an appropriate water head pressure H is maintained. When the wind weakens and the wind pressure P disappears, the check valve 55 is opened, and most of the rainwater or the like is discharged from the check valve 55 to the outside.
[0039]
In FIG. 7, the joint portion between the lower frame 12 and the vertical frame 13 is shown in the same sectional view as FIG. 4. As shown in this figure, a rubber-made sheet-like sealing material 58 is interposed between the lower frame 12 and the vertical frame 13. By this sealing material 58, the actual gap between the lower frame 12 and the vertical frame 13 is very small, and the watertight performance is improved.
[0040]
Further, the lower end surface of the cover material 134 (see also FIG. 2) disposed across the indoor / outdoor members 131 and 132 of the vertical frame 13 is in contact with the upper end surface 59 of such a seal material 58. . For this reason, the attracting piece 138 and the locking piece 139 to which the cover material 134 is locked are notched in order to avoid interference with the sealing material 58. That is, in the joint part of each frame 12 and 13, the accommodation which satisfies both the improvement of watertight performance and shielding of the heat insulation member 133 with the vertical frame 13 is attained.
[0041]
According to this embodiment, there are the following effects.
(1) That is, in the window frame 10 of the sash window 1, the drain port 51 between the indoor side rail 124 and the outdoor side rail 125 of the lower frame 12 is provided over substantially the entire region in the longitudinal direction of the region A corresponding to the shoji 20B. Therefore, this drain outlet 51 can be opened larger than before, and drainage of rainwater and the like can be performed more smoothly. For this reason, when the wind pressure P does not act so much on the check valve 55 or the like, it is possible to prevent rainwater or the like from staying between the rails 124 and 125 and preventing the indoors from overflowing, thereby ensuring good watertight performance. it can. Moreover, since rainwater etc. do not stay, it is not introspected, so there is no worry that the user feels uneasy.
[0042]
(2) Since the drain opening 51 having a large opening is formed by a gap between the first and second cover members 15 and 16 and is not directly drilled in the bottom surface 18 of the lower frame 12, the lower frame While maintaining the strength of 12 large, the drainage can be improved.
[0043]
(3) Moreover, since the drain outlet 51 is provided with a large opening area continuous in the longitudinal direction of the region A, a larger opening can be formed, drainage can be further improved, and pet hair can be further improved. In addition, dust, dust and the like can be prevented from being clogged, and the drainage can be maintained well.
[0044]
(4) The drain hole 53 provided in the bottom surface 18 of the lower frame 12 is not so large as compared with the conventional case, but when there is a lot of rainwater or the like drained from the cover members 15 to 17, After the rainwater or the like is dropped from the drain 51, the rainwater is temporarily stored in the water reservoir spaces B and C below the first and third cover members 15 and 17 and the space below the planar portion 161 of the second cover member. Therefore, when draining rainwater from above the cover materials 15, 16, and 17, the drainage performance is not affected at all, and the drainage performance can be maintained well in this respect as well.
[0045]
(5) Even when rainwater or the like temporarily accumulates on the lower frame 12 as described above, or when rainwater or the like is intentionally retained on the lower frame 12 in order to obtain the water head pressure H, the Such rainwater and the like can be hidden by the first and third cover members 15 and 17, and it is possible to prevent the user from feeling uneasy as described above.
[0046]
(6) In particular, when rainwater or the like stays in a state where the water head pressure H is obtained, the water level rises as part of the planar portion 161 of the second cover material 16 sinks. This second cover material On the 16th side, since it is hidden by the indoor side surface 25 of the external shoji 20B, rainwater and the like are not introspected in the same way, and there is no sense of anxiety.
[0047]
(7) At this time, since the lower sides of the first and third cover members 15 and 17 are the water storage spaces B and C, rainwater and the like can be sufficiently stored, and an appropriate water head pressure H can be reliably obtained. be able to.
[0048]
(8) Since the second cover member 16 is provided, the drainage hole 53 on the bottom surface 18 that appears below the outside door 20B when the external shoji 20B is opened, or a filter (not shown) provided in the drainage hole 53. Etc. can be concealed, and the introspection and appearance can be prevented from being impaired.
[0049]
(9) Furthermore, since the planar portion 161 of the second cover member 16 is provided in the middle of the outdoor rail 125 in the vertical direction, the notch portion 128 for sweeping off the outdoor rail 125 is slightly opened from the upper end. It can be formed simply by notching. Therefore, a part of the outdoor rail 125 can still be left on the lower side of the notch 128, and the seal member 26 of the outer shroud 20B is brought into contact with this portion, whereby the outer shroud 20B. The watertight performance between the lower side of the door and the outdoor rail 125 can also be improved.
[0050]
(10) Since such a planar portion 161 is formed by the second cover material 16 that is detachable with respect to the lower frame 12, the maintenance can be facilitated by removing the second cover material 16, and drainage. It is possible to easily remove dust, dust, and the like that have entered through the mouth 51 and collected on the bottom surface 18. In addition, since the first and third cover members 15 and 17 are also detachable from the lower frame 12, maintenance can be simplified by removing these cover members 15 and 17.
[0051]
(11) Since the first cover material 15 is used in a pair and is provided over substantially the entire length of the lower frame 12, not only the accumulated rainwater and the like, but also the heat insulating member 123 of the lower frame 12 can be well concealed, It is possible to suppress the ultraviolet deterioration of the heat insulating member 123 due to sunlight. Since the heat insulating member 133 of the vertical frame 13 is also covered with the cover material 134, deterioration of the heat insulating member 133 can be surely prevented, and the appearance can be improved. And since these cover members 15 and 134 are made of synthetic resin, even if they are disposed across the indoor / outdoor members 121, 122, 131, 132 of the respective frames 12, 13, the heat insulation performance is reduced at all. There is no fear.
[0052]
The present invention is not limited to the above embodiment.
For example, in the above-described embodiment, the planar portion 161 positioned below the outer screen 20B is formed of the second cover material 16, but as shown in FIG. 8, the hollow portion of the lower frame 12 to be extruded is used. It may be formed integrally as a part, thereby constituting claim 4 of the present invention. Even in such a case, if the drain port 51 with a plurality of cutouts is provided on the downstream side (indoor side) of the planar portion 161 and the drain port 51 is provided over substantially the entire region in the longitudinal direction of the region A, good drainage is achieved. Sex is obtained. In addition, since a cover material for forming the planar portion 161 is unnecessary, there is an effect that the number of parts can be reduced.
However, in addition to providing the drainage port 51 by a plurality of notches, a gap is provided between the indoor side of the planar portion 161 and the outdoor side of the first cover member 15 as in the above-described embodiment, and this gap is provided as a drainage port. It is good.
[0053]
In addition, an integrated cover material in which the first cover material 15 and the second cover material 16 are provided integrally is used, and a discharge port is provided over the entire area in the longitudinal direction of the region A on the integrated cover material. Claim 3 of the invention may be configured, and even in this case, the number of parts can be reduced.
In such a configuration, since it is difficult to make the drain port continuous along the longitudinal direction of the region A (because the cover material may be separated and may not be integrated), drainage is caused by a plurality of notches. A mouth will be provided.
In other words, the drainage port only needs to be provided in the longitudinal direction of the region A, and whether the drainage port is discontinuously provided by the notch or provided continuously takes into consideration the structure of the first cover material and the planar portion. And may be arbitrarily determined.
[0054]
Further, such an integrated cover material may be provided at substantially the same height as the third cover material 17, thereby constituting Claim 5 of the present invention.
[0055]
In the embodiment and the modification shown in FIG. 8, a planar portion 161 is provided, and the planar portion 161 is an essential configuration in claim 1 of the present invention. However, such a planar portion 161 is not an essential configuration in claim 5 of the present invention and can be omitted.
Conversely, in the embodiment, the first cover material 15 and the third cover material are provided at substantially the same height level, but as shown in FIG. The invention of claim 1 is included.
[0056]
In the above embodiment, the check valve 55 is attached to the lower frame 12 and rainwater or the like is discharged to the outside through the check valve 55. However, such a check valve 55 is not provided, and a simple discharge hole is provided. Even if provided, it is included in the present invention. However, by providing the check valve 55, the hydraulic head pressure H can be set small, and the overall size (height dimension) of the lower frame 12 can be reduced.
[0057]
Further, the frame material of the window frame and the shoji material of the shoji according to the present invention are not limited to those using the heat insulating shape material as in the above-described embodiment, and may be constituted only by an aluminum extruded shape material. It can be composed of any form of material such as composite material of extruded shape and synthetic resin, composite material of extruded aluminum shape and synthetic wood, composite material of extruded aluminum shape and natural wood, or synthetic resin alone. is there.
[0058]
【The invention's effect】
As described above, according to the sash window of the present invention, there is an effect that watertight performance can be ensured well and anxiety on the user side can be eliminated.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a sash window according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a sash window.
FIG. 3 is a longitudinal sectional view (sectional view taken along line III-III in FIG. 2) showing an enlarged main part of the sash window.
4 is an enlarged vertical cross-sectional view (a cross-sectional view taken along line IV-IV in FIG. 2) showing an essential part of a sash window.
FIG. 5 is a perspective view showing a lower frame of a sash window.
6 is a longitudinal sectional view for explaining the hydraulic head pressure in the section of FIG. 3;
FIG. 7 is a longitudinal sectional view for explaining a joint portion between a lower frame and a vertical frame.
FIG. 8 is a longitudinal sectional view showing a modification of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Sash window, 10 ... Window frame, 11 ... Upper frame, 12 ... Lower frame, 13 ... Vertical frame, 15 ... 1st cover material which is a cover material of the outdoor side which concerns on Claim 1 and Claim 5, 16 ... A second cover material that is another cover material according to claim 2, 17... A third cover material that is a cover material on the indoor side according to claim 5, 18... Bottom surface, 20 A. DESCRIPTION OF SYMBOLS Indoor side surface 51 ... Drain outlet 124 ... Indoor side rail 125 ... Outdoor side rail 161 ... Planar part A ... Area | region H ... Water head pressure, B, C ... Reservoir space.

Claims

A sash window having a window frame composed of an upper frame, a lower frame, and left and right vertical frames, and an indoor inner door and an outdoor outer door that are slidably built in the window frame. There,
Between the indoor rail and the outdoor rail of the lower frame, a cover material that covers the bottom surface of the lower frame from the indoor rail to a position corresponding to the vicinity of the lower side of the indoor side surface of the outer panel, and the outdoor side A planar portion directed from the rail toward the cover material side,
Between the planar portion and the cover material, a drain outlet is provided for communicating the upper surface side of the cover material and the planar portion with the bottom surface side of the lower frame .
The substantially whole area in the longitudinal direction of the region is the drain port,
The said planar part is a sash window provided only in the area | region corresponding to the position where the said shoji between the indoor side rail and outdoor side rail of the said lower frame was made into the closed state .

The sash window according to claim 1, wherein the planar portion is formed of a cover material different from the cover material disposed on the outdoor side of the cover material.

The sash window according to claim 1, wherein the planar portion is integrally formed on the outdoor side of the cover material.

The sash window according to claim 1, wherein the planar portion is formed integrally with the lower frame.

The cover material is provided on the indoor side across the indoor rail of the lower frame, and another cover material that covers the bottom surface of the lower frame is provided on the outdoor side,
The indoor side cover material and the outdoor side cover material at least the indoor side part of the indoor side surface of the external shingles, the upper surface of each of the indoor side cover material and the indoor side cover material are substantially the same height level,
The sash window in any one of Claim 1 thru | or 4 in which the water reservoir space for ensuring appropriate water head pressure is provided in the lower part side of these indoor outer cover materials.