JP4062665B2

JP4062665B2 - Membrane member mounting structure

Info

Publication number: JP4062665B2
Application number: JP2002060961A
Authority: JP
Inventors: 亨橋爪; 貴士中村
Original assignee: Takano Co Ltd
Current assignee: Takano Co Ltd
Priority date: 2002-03-06
Filing date: 2002-03-06
Publication date: 2008-03-19
Anticipated expiration: 2022-03-06
Also published as: JP2003259932A

Description

【０００１】
【発明の属する技術分野】
本発明は膜状部材の取付構造に関する。さらに詳述すると、本発明は、椅子の座や背凭れなどの構造物を膜状の弾性支持要素とこれを支えるフレームとで構成するときの膜状弾性支持要素とフレーム、あるいはパーテーション（Partition）の弾力的な壁材として用いられる弾性膜状面部材（本明細書ではこれら膜状の弾性支持要素あるいは面部材などを総称して膜状部材と呼ぶ）とこれを支えるフレームの取付構造に関する。
【０００２】
【従来の技術】
近年、合板や鋼板、プラスチック板などの剛体基板と十分な弾力性を発揮する量のウレタンフォームなどのクッション材を使わずに、伸縮性のあるメッシュ素材やシート材などの膜状の弾性支持要素とこれを支えるフレームとで弾力性のある支持構造物（座あるいは背凭れなど）を構成する技術が提案されている（実公平8-8673号）。このような膜状弾性支持要素とフレームとを組み合わせた弾力性を発揮する支持構造物は、フレームに対して膜状部材にテンションをかけた状態で取り付けることが一般的である。例えば、図１４に示すような膜状部材１０１の周縁に樹脂から成るフレーム１０２を成形して一体化するものの場合、クランプ装置によって一定の張力が付与されている状態の膜状部材１０１をフレーム部分を成形する金型内に配置してから樹脂材料を射出し、フレーム１０２の成形と同時に膜状部材１０１を固着して一体化するようにしている。フレーム１０２の周縁からはみ出した膜状部材１０１はフレーム１０２が硬化してから、金型より取り外して切り取る。また、クランプ装置を用いずに膜状部材にテンションをかけてフレームと膜状部材とを一体化する方法としては、テンションをかけていない膜状部材を金型内に配置しておいてからフレームを射出成形し、離型後に成形品を加熱炉に通すことによって、膜状部材を収縮させてテンションをかけるようにした技術も提案されている（特開2001-78852号）。
【０００３】
また、射出成形によりフレームと膜状部材とを一体化する方法以外の膜状部材の取付構造としては、図１５に示すようにフック１０３で膜状部材１０１をフレーム１０２に引っ掛ける取付方法や、図１６に示すように治具１０６によりテンションを掛けて支持した膜状部材１０１を、長手方向に沿って分割した金属製あるいは樹脂製のフレーム１０４，１０５で挟み込んで固定する構造がある。この構造では、テンションをかけるためにクランプされていた膜状部材１０１の縁がフレーム１０４、１０５からはみ出るため、このはみ出し部分を後で切断する。
【０００４】
更に、パーテーション（Partition）の分野においても、近年、面部材として布地のスクリーンを採用し、軽量化を図ると共に鋼板や板材などの硬質材を採用する場合に受ける硬質な印象に代えて、柔らかく温かな印象と触感・材質感を与えることが考えられている。この場合、スクリーンを弛ませずにフレームに取り付けることが必要であることから、スクリーンの上端と下端に通される棒状の部材を介してスクリーンを上下方向に引っ張って支柱に支持させる方法が従来から提案されている。
【０００５】
例えば、自立可能な２本の支柱の間に、布製スクリーンの上端と下端の縫製された筒部をそれぞれ貫通する横桿を引っかけて支持するようにしたものがある（特開2001-152583）。上端側の横桿は、支柱に備えられた上部支持部材のフランジに引っかけられ、下端側の横桿はスクリーンによって吊り下げられている。各横桿は、その両端に円板状のフランジと環状溝とを備え、この環状溝部分に上部支持部材と支柱に対し摺動可能に備え付けられている下部押え部材のフランジ部分がそれぞれ嵌め込まれるように係合させられることによって、左右の支柱に対して着脱自在に取り付けられている。そして、吊り下げられたスクリーンの下端の横桿並びに下部押え部材の自重でスクリーンを上下方向に緊張させるようにしている。また、調整ねじを利用した張力調節機構によりスクリーンの張り具合を調整可能としたスクリーンパネルも提案されている（特開2000-1932）。このスクリーンパネルは、フレームを構成する一対の桟の間に可撓性のある面部材例えば布を取付け、一方の桟を調整ねじの回転により他方の桟から離れるようにあるいは接近するように調整移動させることによって、面部材の張り具合を調節可能にするようにしたものである。ここで、面部材の張具合を調節する張力調節機構は、左右の枠材に対して固定される上下の桟を、固定部分と該固定部分の内側にあって面部材を保持する可動部分との二重構造とし、少なくとも一方の可動部を調整ねじによって上下方向に移動可能に支持するようにしている。
【０００６】
【発明が解決しようとする課題】
しかしながら、フレームの射出成形と同時に膜状部材をフレームと一体化する射出成形による取付方法は大型かつ高価な金型やクランプ装置などの設備投資が必要となってしまい、コスト高となる。また、離型後に成形品を加熱してテンションをかける方法では大型なクランプ装置は必要としないが、加熱処理を必要とする。また、膜状部材とフレームが一体化されているため、テンションが弱ってきても調整することが困難であるし、膜状部材をフレームから取り外して洗濯したり、好みや用途などに応じて交換することなどはできない。
【０００７】
さらに、図１６に示すテンションを掛けた膜状部材１０１をフレーム１０４，１０５で挟み込む方法でもまた、テンションを付与するための手間が掛かると共にテンションを付与するための付帯設備が必要になってしまう。しかも、はみ出した膜状部材１０１をトリミングする作業も必要とする。また、タッカー止めなどで膜状部材をフレームに取り付ける場合には、テンションを掛けながらタッカーで止めたりフック１０３に掛けたりしなければならないため、作業性が悪く、コスト高となってしまうし、テンションにばらつきが生じやすくなる。
【０００８】
また弾性面部材を使ったスクリーンパネルにおいては、いずれも面部材に対しては上下方向には張力が掛けられて張り詰められているが、左右方向には全く張力が掛けられてもいなければ支持さえもされていないため、面部材の材質によっては、左右両側縁が弛んだり、波打ったりする虞があり、安っぽい感じを与えることがある。即ち、全面を強く張れないために、鋼板を芯材としたパネル面のような安定感や硬質感を得ることができないという不具合がある。しかも、フレームの他に、張力調節機構などを必要とし、その分だけ重量が増加すると共に構造が複雑となるし部品点数も多いためコスト高ともなる。更には、左右の張力調節機構を同期させて調整作業を進めなければ、桟の内部の可動部が斜めになったり、こじれを引き起こす虞があるので、調整作業も簡単ではないし人手を要することとなる。更に、組み立てのための専用の治具や設備を必要とすると共に、組み立て作業性に手間がかかりコスト高となる問題を有している。また、部品点数も多くコスト高となるし、膜状部材からなる弾力壁材を採用する利点も生かし切れない問題を有している。即ち、膜状部材の材質や色、デザインなどを消費者の好みなどに応じて自由に変更できないなどの問題を有している。
【０００９】
そこで、本発明は、膜状部材とフレームのインサート成形のための金型やテンション付与のためのクランプ装置などの特別な設備を必要とせず、手作業によって膜状部材のフレームへの取付作業並びに膜状部材のフレームからの取り外しが簡単に実施できる膜状部材の取付構造を提供することを目的とする。更に、本発明は、膜状部材のみの交換も簡単で、膜状部材が汚れたり損傷した場合にも洗濯したり交換することができ、更には好みや用途に合わせて膜状部材の材質や色、デザインなどを自由に選択・変更できる膜状部材の取付構造を提供することを目的とする。更に、本発明は、膜状部材とフレームとの分別廃棄を容易にする膜状部材の取付構造を提供することを目的とする。
【００１０】
【課題を解決するための手段】
かかる目的を達成するため、請求項１並びに２に記載の発明は、フレームとこれに周縁部が取り付けられて張り詰められる膜状部材とで弾力性を発揮する弾性支持面を構成する膜状部材の取付構造において、フレームは対向する２辺の少なくとも外側の縁部の間隔が膜状部材の装入端よりも広がる拡張縁部並びに膜状部材の前端及び後端を係止する前縁部及び後縁部を有し、膜状部材は全体として矩形状を成して少なくとも二隅が内側に抉られた緩やかな円弧状に形成されると共にフレームの拡張縁部と幅方向に係合し該拡張縁部に沿って前後方向にスライド可能な横係止部材並びにフレームの前縁部及び後縁部に係止して膜状部材に前後方向の張力を与えて膜状部材を固定する縦係止部材とを備え、横係止部材をフレームの拡張縁部に係合させてスライドさせて膜状部材をフレームに装着するのと同時にフレームの形状を利用して膜状部材にテンションを付与し、さらに、縦係止部材をフレームの前縁部及び後縁部に係合させて膜状部材をフレームに装着するのと同時に膜状部材にテンションを付与するようにしている。
【００１１】
したがって、フレームの拡張縁部に膜状部材の両側の横係止部材を係合させて拡張縁部に沿って奥行き方向にスライドさせると、徐々に膜状部材の幅が広げられ、取付位置にまで達した時には膜状部材のサイズおよびフレームの拡張縁部間距離並びに前後縁部間距離によって定まる一定のテンションが付与される。つまり、膜状部材をフレームの拡張縁部に沿ってスライドさせて組み付けようとすると、フレームの左右の拡張縁部間の間隔が広がることによって、膜状部材が幅方向に引っ張られて張力が付与され、フレームに膜状部材を取り付けると同時に所定の幅方向テンションが付与される。また、フレームの前縁部及び後縁部に係合する縦係止部材を設けた場合には、縦係止部材をフレームに取り付けることで奥行き方向にも張力が付与されると同時に膜状部材が所定位置に固定される。この場合、横係止部材と縦係止部材とで膜状部材がフレームに対して前後左右方向に固定されて外力の付与などに対してもずれが防止される確実な固定が実施できる一方で、縦係止部材を外してから横係止部材を逆方向にスライドさせるだけでフレームから膜状部材を簡単に取り外すことができる。
【００１２】
更に、請求項３記載の発明は、請求項１または２記載の膜状部材の取付構造を、フレームとこれに取り付けられる膜状の弾性支持要素とで構成される椅子の座や背凭れに適用するようにしている。即ち、フレームは椅子の座あるいは背凭れを構成するフレームであり、膜状部材は必要な弾力性を発揮させる張力を与えた状態でフレームに支持されて座面あるいは背凭れ面を構成する弾性支持要素としている。この場合には、膜状部材の横係止部材をフレームの拡張縁部に係合させて奥行き方向にスライドさせ、その後フレームの前縁部と後縁部に縦係止部材を係止させるだけの簡単な作業で、膜状部材に座や背凭れとして必要な弾力性を発揮させる張力を与えた状態でフレームに膜状部材を固定することができる。しかも、フレームの前縁部と後縁部から縦係止部材を外してから膜状部材を組み立て時とは逆方向にスライドさせるだけの簡単な作業でフレームと膜状部材との分解が実施できる。したがって、膜状部材の選定により付与されるテンションを調整して座や背凭れの堅さや弾力性を変更することができる。また、経年変化などにより膜状部材にへたり・弛みが生じても、膜状部材だけを交換することによって再生できるし、座や背凭れの堅さや弾力性を好みのものに交換もできる。加えて、フレームが環状の平板から成る場合、座や背凭れを薄くできる。
【００１３】
【発明の実施の形態】
以下、本発明の構成を図面に示す実施の形態の一例に基づいて詳細に説明する。
【００１４】
図１〜図８に本発明の膜状部材の取付構造を椅子の座構造物に適用した実施形態を挙げて説明する。尚、本実施形態では、フレーム２は椅子の座枠を構成し、膜状部材１は必要な弾力性を発揮させる張力を与えた状態でフレーム２に支持される弾性支持要素であり、それ自体で座面を構成するか、あるいはその上にウレタンフォームと上張り地を載せて座を構成する際の座板の代用品として用いられる。
【００１５】
この座構造物は、フレーム２とこれに周縁部が取り付けられて張り詰められる膜状部材１とで弾力性を発揮する弾性支持面を構成するもので、フレーム２には対向する２辺の少なくとも外側の縁部の間隔が膜状部材１の装入端よりも広がる拡張縁部２ａ，２ｂを備える一方、膜状部材１にはフレーム２の拡張縁部２ａ，２ｂと幅方向に係合し該拡張縁部２ａ，２ｂに沿って前後方向にスライド可能な横係止部材３ａ，３ｂを備え、横係止部材３ａ，３ｂをフレーム２の拡張縁部２ａ，２ｂに係合させてスライドさせて膜状部材１をフレーム２に装着するのと同時にフレーム２の形状を利用して膜状部材１にテンションを付与するようにしている。さらに、フレーム２には膜状部材１の前端と後端を係止する前縁部２ｆ並びに後縁部２ｒを、膜状部材１にはフレーム２の前縁部２ｆ並びに後縁部２ｒに係止して膜状部材１に前後方向の張力を与えて該膜状部材１を固定する縦係止部材４ｆ、４ｒを備え、縦係止部材４ｆ、４ｒをフレーム２の前縁部２ｆ及び後縁部２ｒに係合させて膜状部材１をフレーム２に装着するのと同時にテンションを付与するようにしている。ここで、縦係止部材４ｆ、４ｒは、場合によっては設けられず、横係止部材３ａ，３ｂと拡張縁部２ａ，２ｂとの間にずれ防止手段が設けられたり、膜状部材１の縦方向・前後方向のテンションをかけずにフレーム２の前縁部２ｆ並びに後縁部２ｒに対して膜状部材１の前端並びに後端をずれないように固定するだけのずれ防止手段を設けるようにしても良い。例えば、横係止部材３ａ，３ｂの内面に凸部を形成する一方でこの凸部と嵌め合わされる凹部を拡張縁部２ａ，２ｂの表面に形成するようにしたり、横係止部材３ａ，３ｂを拡張縁部２ａ，２ｂに対してビス止めすることによってずれ防止を図るようにしても良い。尚、本明細書においては、構造物の前後左右に関係なく、膜状部材のスライド方向を基準にし、スライド方向を縦方向ないし前後方向と呼び、特に膜状部材を装入する方向を奥行き方向と呼ぶ。また、幅方向ないし左右方向・横方向とはスライド方向と直交する方向を意味するものとして使用している。また、各図における記号Ｆは椅子の前方側、Ｒは後方側を示しており、本実施形態においてはその前後方向はスライド方向と一致している。
【００１６】
膜状部材１はフレーム２に装着したときに伸びて所望のテンションがかかるようにフレーム輪郭形状よりも小さく形成されている。本実施形態の膜状部材１は、全体としてほぼ矩形状を成し、四隅が内側に抉られた緩やかな円弧状に形成されて各コーナ部分でフレーム２が露出するように設けられている。これによって、湾曲するコーナ部分での弛みの発生を防ぐようにしている。そして、半円形に抉られたコーナ部分によって四辺に明瞭に区画された各辺には、横係止部材３ａ，３ｂあるいは縦係止部材４ｆ，４ｒが設けられている。
【００１７】
ここで、膜状部材２としては、少なくとも拡張縁部２ａ，２ｂの間をスライド可能とする程度の伸縮可能な素材ないし組成・構造でかつ座構造物の弾性支持要素としての剛性を有するものであれば、その材質などには特に限定されないが、メッシュあるいはシート、フィルム、布地、不織布等の使用が好ましい。特にメッシュシートないし繊維補強シートであることが好ましい。中でも、リサイクル可能なオレフィン系樹脂製あるいはポリエステル製メッシュシートが好ましく、例えば、ポリエステル糸とエラストマ性ポリエステル糸との織物（例えば、デュポン社製商品名ダイメトロールとして知られているメッシュシート）の使用が好ましい。このポリエステル製メッシュシートは、へたりが少ない。そして、メッシュシートであることにより、弾力性や通気性が良好であるので、座り心地の良い快適な座を得ることができる。また、繊維補強シートとして好適なものは、ポリエステルエラストマから成る厚さ１．０ｍｍ程度のシート材であって、その裏面を補強用の布地例えば１２０〜２４０デニールのナイロンまたはポリエステル製のタフタで補強したものが挙げられる。補強用布地によってシート材が補強されることにより、厚さ１．０ｍｍ程度のシート材でも十分な弾力性を有して荷重を支持することができる。しかしながら、膜状部材１としては、特に上述のメッシュシートや繊維補強シートに限定されるものではなく、構造物（例えば座）の弾性支持要素として十分な剛性と弾力性が発揮される材質・構造・組成のものが適宜使用される。尚、本明細書中で「シート」とは、広さに比べて厚みが薄い形状のものを意味するが特に厚さ０．１〜２．０ｍｍ程度のものを意味しており、厚いフィルムも含む概念としている。
【００１８】
横係止部材３ａ，３ｂは、フレーム２の拡張縁部２ａ，２ｂと幅方向に係合し該拡張縁部２ａ，２ｂに沿って前後方向・縦方向にスライド可能なもので、本実施形態の場合には図１に示すようにフレーム２の両側の拡張縁部２ａ，２ｂの形状に合わせてほぼ直線状に形成されている。この横係止部材３ａ，３ｂは、前後方向・縦方向にスライド可能な構造及び素材から成る。また、縦係止部材４ｆ、４ｒは、フレーム２の前縁部２ｆ並びに後縁部２ｒに係止して膜状部材１に前後方向の張力を与えて該膜状部材１を固定するもので、本実施形態の場合にはフレーム２の前縁部２ｆと後縁部２ｒとの形状に合わせて弓形に形成されている。これら横係止部材３ａ，３ｂあるいは縦係止部材４ｆ，４ｒは、本実施形態の場合、フレーム２の各縁部２ａ，２ｂ，２ｆ，２ｒを弾力的に挟み込む「コ」形の断面形状を成す例えばＰＥＴ（ポリエチレンテレフタレート）やＰＰ（ポリプロピレン）等のオレフィン系樹脂成形品とし、上辺を下辺よりも延ばして膜状部材１の縁に縫い付けるようにしている。勿論、縦係止部材４ｆ，４ｒはフレーム２に対して摺動させる必要はないので、横係止部材３ａ，３ｂと同じ素材及び構造とする必要はなく、単にフレーム２の前後縁部２ｆ，２ｒに引っ掛かり易くかつ外れ難い形状例えば縦方向に係止するだけのフック形状を有していれば足りる。また、横係止部材３ａ，３ｂあるいは縦係止部材４ｆ，４ｒは、樹脂成形品には限られず、バネ鋼などを折り曲げた所謂板金製品であったり、アルミ押し出し成形品などであっても構わない。
【００１９】
このように各横係止部材３ａ，３ｂを樹脂成形品とすることは座の軽量化という点で好ましいばかりか、構造物の表面に露出する際にも金属のような冷たさを感じさせない。また、ここでは固着方法として縫製を採用しているがこれに特に限定されず、各係止部材３ａ，３ｂ，４ｆ，４ｒの材質等に合わせて接着ないしその他の接合手段から適宜選択すればよく、所望の取付強度が得られるならばいずれかの方法に限定されることはない。横係止部材３ａ，３ｂや縦係止部材４ｆ，４ｒの全てを同じ材質とする必要はないが、テンションをかけながらスライドさせる横係止部材の場合にはフレームに対して摺動性のよい樹脂製とすることが好ましい。また、膜状部材１とそれに付帯する横係止部材３ａ，３ｂ、縦係止部材４ｆ，４ｒ並びに縫製糸ないし接着剤をＰＥＴ（ポリエチレンテレフタレート）やＰＰ（ポリプロピレン）等のオレフィン系樹脂で構成すれば、各パーツ毎に分離せずにそのまま廃棄したり、あるいは粉砕・溶融して射出原材料などとしてリサイクルすることができる。
【００２０】
椅子の座枠として構成されるフレーム２は、ほぼ矩形の周回する環状枠から成り、座受け部材６によって支持されている。本実施形態の場合、座受け部材６は、翼状に左右に広がってフレーム２を支える前後２箇所の支持板６ａと、この２枚の支持板６ａを中央で受け支えるベース６ｂとによって構成されている。支持板６ａは、図２に示すように両端が持ち上げられるようにベース６ｂに当接する部分の端から上方に折り曲げられた形状とされたチャネル材で、着座時に沈んだ膜状部材１の底が座受部材６のベース６ｂに付かないようにしている。ベース６ｂは、例えば図２に示すようなチャネル材が用いられたもので、上面に支持板６ａが溶接などにより固着されている。本実施形態では、フレーム２並びに座受部材６とは、共に金属板・鉄板で形成されているが、場合によってはその他の素材例えば合成樹脂や繊維強化合成樹脂などで形成しても良い。
【００２１】
また、本実施形態のフレーム２は、椅子の座として適するように４隅のコーナ部分に緩やかな丸みが付されている（図１参照）。また、図３に示すように、フレーム前縁部２ｆは外側に向けて緩やかに膨らませられると共に、前側へ垂れ下がるように緩やかな傾斜が付されるようにして着座者の大腿部裏を圧迫するのを避けて快適な座り心地が与えられるように設けられている。また、後縁部２ｒも外側に向けて膨らませるように湾曲させられている。更に、両側の辺は少なくとも外側の縁部の間隔が奥行き方向（本実施形態の場合には椅子の前方側Ｆ）に末広がりとなる拡張縁部２ａ，２ｂが形成されている。本実施形態の場合の拡張縁部２ａ，２ｂは、幅が一定の直線状の辺が図示するように中心線に対して僅かに傾斜して椅子の後方側から前方側に向かうにつれて徐々に広がるように（テーパ状に）配置されることによって形成されている。また、本実施形態ではフレーム２を図１及び図３に示すように環状の平板状としている。このようにフレーム２を平板状とした場合、座自体の厚みを薄くすることができると共に椅子の軽量化も図り得る。
【００２２】
さらには、フレーム２の裏面の外周側寄りの部位には、図３に示すように、全周に亘って凹部５が設けられている。この凹部５は、縦係止部材４ｒ（あるいはここでは図示していないが縦係止部材４ｆや横係止部材３ａ，３ｂについても同様）を嵌め込むようにして係止させた（引っ掛けた）場合に、縦係止部材４ｒのフック状先端部のフレーム裏面側に周り込んだ部分が凹部５に収まり、フレーム２の裏面と面一となるか、あるいはこの裏面よりも凹んだ位置となり、横係止部材３ａ，３ｂ及び縦係止部材４ｆ，４ｒを含めたフレーム２の厚さを薄くすることが可能となり、外観上も好ましいものとなる。
【００２３】
次に、以上のように構成された本実施形態の膜状部材１をフレーム２に取り付ける際の取付手順について図４〜図８を参照して説明する。なお、これら図４〜図８では座受け部材６（支持板６ａおよびベース６ｂ）の図示を省略している。
【００２４】
まず、膜状部材１は拡張縁部２ａ，２ｂ間の間隔が比較的狭いフレーム２の後側からフレーム２の拡張縁部２ａ，２ｂに沿ってスライドさせることによって取り付けられる（図４）。このとき、横係止部材３ａ，３ｂの前端を開いてフレーム２の拡張縁部２ａ，２ｂの後端部に挟み込むように嵌め込む（図５）。この状態から膜状部材１をさらに前方・奥行き方向へスライドさせると（図６）、フレーム２に沿って横係止部材３ａ，３ｂが移動するため、左右の横係止部材３ａ，３ｂの間隔が広がり、膜状部材１に幅方向のテンションが付与される。さらに、このまま膜状部材１を奥行き方向へスライドさせ、後方側の縦係止部材４ｒをフレーム２の後端縁２ｒに引っ掛かけてから（図７）、図示するように前側の縦係止部材４ｆを更にフレーム２の前端縁２ｆよりも前方へと引っ張り、フレーム２の前縁に縦係止部材４ｆを引っ掛ける（図８）。これにより、奥行き方向にも張力が付与されて取り付けられる。
【００２５】
膜状部材１をフレーム２に取り付ける作業は、以上のような簡単な操作にて完了する。このようにしてフレーム２に取り付けられた膜状部材１は、横係止部材３ａ，３ｂおよび縦係止部材４ｆ，４ｒがそれぞれフレーム２の縁２ａ，２ｂ，２ｆ，２ｒに引っ掛かっていることから、前後左右方向に適宜テンション（張力）がかかり、全面に弛みなく張られる。また、膜状部材１を交換等のために取り外す際には、上述の取付操作とは逆に、前縁部２ｆに引っ掛かっている縦係止部材４ｆを外してから、左右の横係止部材３ａ，３ｂを持って膜状部材全体を後縁部２ｒ側へとスライドさせれば簡単に外すことができる。
【００２６】
図１３に、本発明の膜状部材の取付構造をパーテーションに適用した例について説明する。尚、本実施形態においては、上述の実施形態と同様の構成については同一符号を付し、その詳細な説明を省略し、パーテーション特有の構造等について説明する。
【００２７】
この実施形態のパーテーション１１は、膜状部材を弾力性を有するパーテーション壁材・膜状面部材（以下、単に膜状部材と呼ぶ）として採用したもので、パーテーション１１の輪郭形状を形成するフレーム２に膜状部材１を張りつめて取り付けることによって構成され、膜状部材１が有する柔らかく温かな印象と触感・材質感を与えるものである。
【００２８】
フレーム２は、膜状部材１の周縁を保持すると共にパーテーションとしての形態を定める骨格として機能するもので、任意の枠形状を採りうる。本実施形態の場合には、フレーム２は平面から成る矩形状の環状枠であり、その周縁部２ａ，２ｂ，２ｆ，２ｒに膜状部材１の横係止部材３ａ，３ｂ並びに縦係止部材４ｆ，４ｒを嵌め込んで、膜状部材１を張り詰めて取り付けるように設けられている。フレーム２は、特に大きな荷重を支えることが想定される用途の場合を除いて、構造的にはそれほど剛性を有する材質・厚みなどで構成する必要はないが、通常はアルミニウム合金の型押し材や引き抜き材、めっき処理が施された鋼板や管材、軽量且つ剛性に優れる亜鉛ダイキャスト、プラスチック等が主に利用され、場合によっては木材なども使われる。フレーム２は、脚部を備えて自立可能とされたり、図示していない取付具を装備して机やテーブルなどの什器類に支持させるようにしても良い。更に、このフレーム２は、幾つかに分割可能に形成し、ジョイントなどで連結可能とすることが好ましい。この場合には、運搬時などに、膜状部材１とフレーム２とを分離した上に更にフレーム２を分割してコンパクトに収納できる。
【００２９】
また、膜状部材１は、椅子の座や背凭れに用いた上述の実施形態の場合とは異なり、構造材としての十分な剛性と弾力性が発揮される材質・構造・組成のものである必要はなく、一定の張力が与えられる材質・構造であれば如何なるものでも採用可能であり、パーテーションとしての機能や装飾性などの観点から、相応しい材質・構造のものが適宜採用される。例えば、パーテーションとしての膜状部材１としては、天然繊維や合成繊維から成る布地、織物、不織布、メッシュ、フィルム、和紙等のほとんどの素材が使用可能である。例えば、オレフィン系樹脂製あるいはポリエステル樹脂製の生地やメッシュシート例えばポリエステル糸とエラストマ性ポリエステル糸との織物（デュポン社製商品名ダイメトロールとして知られている）はリサイクル可能であり好ましい。しかも、このダイメトロールはへたりが少なくかつメッシュシートであることにより、弾力性や通気性が良好であるので、長期の使用にも弛まないし、視線を遮るパーテーションの働きをしながら、同時に空気の流通を可能として空調の妨げとならず、心地良い快適な環境を作り出すことができる。勿論、他の素材であってもメッシュ構造であれば視線の遮蔽と通気性との両立などの効果を奏することができるし、さらに素材ごとの独特の感触や光沢などが醸し出す優雅さや清涼感などが更に快適な環境を作り出すこととなる。また、繊維補強シートの採用は大きなテンションの付与を可能とし、その状態において硬質な質感を与えることができる。
【００３０】
このパーテーション１１におけるフレーム２は、図１３において詳しくは図示されていないが例えば上フレーム（上辺に該当する部分）２ｒが下フレーム（下辺に該当する部分）２ｆよりも僅かに短く、下フレーム２ｆから上フレーム２ｒへ向かうにつれ徐々に幅狭となる台形形状とされている。即ち、本実施形態のフレーム２では上辺２ｒから下辺２ｆへ向かう方向が奥行き方向であり、フレーム２の両側に下辺２ｆに向かうほどの外側の縁部の間隔が広がる所謂拡張縁部２ａ，２ｂが構成されている。一方、膜状部材１には、その両側にフレーム２の拡張縁部２ａ，２ｂに沿ってスライド可能な横係止部材３ａ，３ｂを備えるとともに、上フレーム２ｒおよび下フレーム２ｆに係止可能な縦係止部材４ｆ，４ｒを備えている。また、フレーム２の大きさと膜状部材１の大きさとの関係は、膜状部材１の伸縮性や取付時にどの程度のテンションを付与するか等によって異なるが、テンションがかけられる前の状態で膜状部材１がフレーム２より僅かに小さくなるように形成されている。
【００３１】
このようなパーテーション１１においては、フレーム２に膜状部材１を簡単に取り付けることができ、しかも膜状部材１にテンションを付与するのに治具や装置を必要としないので簡単かつコストが安価となる。即ち、フレーム２の上フレーム２ｒ側から膜状部材１を被せ、横係止部材３ａ，３ｂを横フレームの拡張縁部２ａ，２ｂに係止させて所定位置（図１３に示すパーテーション１１においては、フレーム２の全面を膜状部材１が覆い被さる位置）までスライドさせることによって、膜状部材１にテンションがフレーム形状を利用してかけられる。この場合、両側の拡張縁部２ａ，２ｂに沿ってスライドする横係止部材３ａ，３ｂは、それらの間の間隔を徐々に広げ所定の大きさの幅方向のテンションを膜状部材１に付与する。また、この所定位置において上側の縦係止部材４ｒが上フレーム２ｒに係止されていれば、下側の縦係止部材４ｆを下フレーム２ｆに係止させることによって、膜状部材１に高さ方向にも所定のテンションが付与されると共にパーテーション１１の組み立てが完了する。また、パーテーション１１を分解したり、膜状部材１を交換するときには、上述とは逆の操作を行うことにより簡単に実施できる。
【００３２】
以上のように構成されるパーテーション１１は、オフィスで簡単に組み立てられ尚かつ分解可能であるので、運搬時の大きさを極端に小さくして搬送コストを圧縮できる。しかも、この膜状部材１の取替はオフィスなどで簡単にできるので、オフィス環境等に応じてあるいはそこで働く人等の好みに合わせて、膜状部材１の材質や色、デザインなどを自由に選択・変更できる。また、膜状部材１の壁材が汚れたり損傷した場合にも、簡単に取り外して洗濯したり交換したりすることができる。更には、部品点数も少なく低コストとなる。
【００３３】
なお、上述の実施形態は本発明の好適な形態の一例ではあるがこれに限定されるものではなく本発明の要旨を逸脱しない範囲において種々変形実施可能である。例えば本実施形態では金属製の環状フレーム２に膜状部材１を取り付ける場合について示したが、フレーム２はこのような形状に限られることはなく、対向する２辺の少なくとも外側の縁部の間隔が膜状部材１の装入端よりも広がる拡張縁部２ａ，２ｂを備えていれば足り、その他の形状上の制約は受けない。例えば、図９に示すように、フレーム２が前部２ｆ、後部２ｒ、両側部２ａ，２ｂの４つの部材に分割されて構成されることもある。このような場合においても、両側部のフレーム２ａ，２ｂをそれらの間の間隔が膜状部材の装入端となる後部フレーム２ｒ側寄りよりも広い部分が奥行き方向に存在する形状ないし配置となるように、即ち前部フレーム２ｆ側寄りの方が広くなるように（図９では後方側から前方側へ徐々に広がるように）配置されておれば良い。また、前後のフレーム２ｆ，２ｒによって前方側縦係止部材４ｆと後方側縦係止部材４ｒとを係止させることができれば、上述の実施形態の場合と同様、膜状部材１を簡単に取り付けると同時にテンションを付与することができる。なお、図９に示すように、前後のフレーム２ｆ，２ｒはベース６ｂによって支持されている。また、拡張縁部２ａ，２ｂは少なくとも外側の縁部の間隔が末広がりとなるように形成されておれば足り、拡張縁部２ａ，２ｂの内側の縁部が互いに平行あるいは逆に奥行き側に向けて狭まるような関係に設けられていても支障はない。
【００３４】
また、フレーム２の形状は本実施形態のように板状である場合に限らない。例えば、図９に示すようにフレーム２が分割されているような場合には、直管から成るパイプフレームで拡張縁部２ａ，２ｂを構成するようにしても良い（図１０参照）。この場合には、横係止部材３ａ，３ｂはパイプフレーム２ａ，２ｂの周りに嵌ってスライド可能なパイプを採用しても良いし、あるいは図１１に示すように、パイプフレームからなる拡張縁部２ａ，２ｂの長手方向にスリット１２を設け、該スリット１２を貫通して頭部１３を引っ掛かけるＴ字形状の横係止部材３ａ，３ｂを採用し、管軸方向・長手方向にスライド可能なようにしても良い。
【００３５】
また、拡張縁部２ａ，２ｂを構成する対向する２辺も、図示したハの字形に限られず、途中に最大拡張領域を有する形状、例えば「（）」や「Ｏ」などのような形状でも良い。即ち、フレーム２の拡張縁部２ａ，２ｂは、縁部間の距離が徐々に増していくようにしたものに限られず、膜状部材１のフレーム２への装入端を除く部分に膜状部材１にテンションをかけて係止させる平行な縁部を有する形状など、少なくとも膜状部材１をスライドさせることによって横係止部材３ａ，３ｂの間隔が広がるような変位を与えられるものの全てを含む。即ち、拡張縁部２ａ，２ｂのスライド方向に対する傾き（テーパ）はフレーム２のスライド領域の全域に与えられる（形成される）必要はなく、一部領域例えば奥行き端部付近を平行な間隔としても良い。例えば、図１２に示すように、フレーム自体を緩やかに湾曲させ、フレーム２の両側の拡張縁部２ａ，２ｂ間の間隔は開くが前側に近付くほどその増加割合が減り、徐々に一定幅に収束するような形状であっても構わない。
【００３６】
また、本実施形態においては膜状部材１に横係止部材３ａ，３ｂ並びに縦係止部材４ｆ，４ｒを縫い付けて固着したが、場合によってはこれら横係止部材３ａ，３ｂを着脱可能に取り付けたり、膜状部材１に対する取付位置を自由に切り換えられるように取り付けることも可能である。例えば、膜状部材１に対し着脱可能な留め具（例えばフックのようなものなど）を膜状部材１の両側付近に複数列設け、これらの中から任意の留め具列を選択して横係止部材３ａ，３ｂに留め付けることによって横係止部材３ａ，３ｂの取付位置を切り換えることができる。あるいは、取付位置の異なる複数の係止部材を膜状部材に設け、あるいは膜状部材に対する複数の取付位置を有する係止部材を準備し、拡張縁部に係止する係止部材を選択するか、膜状部材に取り付ける係止部材の取付位置を選択することにより、両側の横係止部材３ａ，３ｂの取付幅を変更することによって膜状部材１の取付時のテンションを適宜変更することもできる。
【００３７】
また、本実施形態では膜状部材１の４辺に横係止部材３ａ，３ｂ並びに縦係止部材４ｆ，４ｒを各々１つずつ配置した例を示したが、これに限られず、フレーム形状に沿って複数あるいは更に細かく分割するようにしてもよい。例えばフレーム並びに膜状部材として比較的複雑な形状が採用されたような場合、複数に分割された横係止部材３ａ，３ｂを設けることが好ましい。この場合、複雑な形状のフレーム２に対してもこのような分割された横係止部材３ａ，３ｂを用いることにより拡張縁部の輪郭形状に沿って変形し逸脱することなくスライドさせることができるようになる。
【００３８】
また、本実施形態ではフレーム２の形状を前広後狭とし、膜状部材１を後方側からフレーム２に被せてスライドさせる場合について説明したが、これとは逆に前狭後広としても構わないし、椅子の前後方向ではなく幅方向にテーパを付すように拡張縁部２ａ，２ｂを設けるようにしても良いし、対向する一対のフレームの辺の一方の外側縁部にのみスライド方向に対する傾きを設けることにより拡張縁部を構成するようにしても良い。
【００３９】
また、本実施形態においては椅子の座に適用した例を示したが、この取付構造を椅子の背凭れに適用すれば、座の場合と同様、背凭れを構成する膜状部材１を簡単に取り付けあるいは取り替えることが可能となるし、背凭れを薄くして軽量化を図ることも可能となる。さらに、本発明の膜状部材１の取付構造は、これら椅子の座や背凭れ以外にも膜状部材１を簡便に取り付けたり取り替えたりすることのある、あらゆる機器や装置等に適用して好適なものであり、適用範囲が椅子に限定されるものではない。
【００４０】
【発明の効果】
以上の説明より明らかなように、請求項１並びに２に記載の膜状部材の取付構造によると、フレームの形状を利用して膜状部材を取り付けると同時にテンションを付与することができるので、膜状部材の取付作業にクランプ装置やインサート成形のための金型などの特別な設備を必要とせず、手作業で膜状部材の取付とテンション付与作業が実施できると共に、テンションをかけながら膜状部材を留め付けるような取付工程や熱処理工程も不要となる。また、膜状部材の取り外しも、奥行き側の縦係止部材をフレーム前縁部から取り外して膜状部材を手前側に引っ張るようにスライドさせるだけの簡単な作業で実施できる。したがって、少量生産に向いた低コストの取付構造であって、製造コストを大幅に削減することができる。
【００４１】
さらに、膜状部材をスライドさせて係止部材を引っかけるだけの構造としたので、取付ねじやフック等を必要とせずその分の部品と手間が省けると共に、フレームと膜状部材とを容易に分離して分別廃棄できる。しかも、膜状部材のへたりなどでテンションが弱ってきたときや損傷したときにも膜状部材を交換することができるし、膜状部材が汚れた場合にも簡単に洗濯したり交換したりすることができるし、好みや用途に合わせて膜状部材の材質や色、デザインなどを自由に選択・変更できる。さらに、組み付けにより付与されるテンションは膜状部材のサイズや材質、フレーム間の距離によって一義的に定まる一定のものであることから、大量生産する場合にも作業者の熟練度や設備に関係なく安定したテンションを付与することができ、品質のばらつきを少なくできる。
【００４２】
また、縦係止部材をフレームに取り付けることで奥行き方向にも張力が付与される同時に膜状部材が所定位置に固定されるので、フレームに対して膜状部材が前後左右方向にテンションがかかると共にずれるのが防止される。さらに、縦係止部材を外してから横係止部材を逆方向にスライドさせるだけでフレームから膜状部材を簡単に取り外すことができる。
【００４３】
請求項３記載の発明によると、座や背凭れなどの構造物のフレームの成形と膜状部材の取付けとを金型を使った樹脂成形によって同時に行う一体的取付方法と比べて、多大な金型投資が不要となることから、少量生産に向いた低コストの取付構造であって、製造コストを大幅に削減することができる。しかも、膜状部材の選定により付与されるテンションを調整して座や背凭れの堅さや弾力性を容易に変更することができる。さらに、経年変化などにより膜状部材にへたり・弛みが生じても、膜状部材だけを交換することによって再生できるし、座や背凭れの堅さや弾力性を好みのものに交換もできる。加えて、フレームの厚さに構造物の厚さが依存するので座や背凭れを薄くできる。また、内枠と外枠によって膜状部材を挟み込む構造などと比較しても部品点数も少なくできることからコストを下げることができる利点を有する。しかも、膜状部材たる弾性支持要素のフレームへの取付・取り外しは、専用の治具や設備を必要とせず、手作業あるいは簡単な工具の使用で簡単に実施できるので、椅子の購入者あるいは使用者自身が用途や好みに合わせて膜状部材の材質や色、堅さなどを自由に選択・変更できるし、膜状部材が汚れたり損傷した場合にも簡単に取り外して洗濯したり交換したりすることができる。
【図面の簡単な説明】
【図１】本発明にかかる膜状部材の取付構造を椅子の座構造物に適用した一実施形態を示す平面図である。
【図２】同座構造物の正面図である。
【図３】同座構造物の左側面図である。
【図４】同座構造物の膜状部材の取付手順を示す平面図で、組み付け直前の膜状部材とフレームを示す。
【図５】同座構造物の膜状部材の取付手順を示す平面図で、装入開始時の膜状部材とフレームを示す。
【図６】膜状部材の取付手順を示す平面図で、装入途中の膜状部材とフレームを示す。
【図７】膜状部材の取付手順を示す平面図で、装入完了時の膜状部材とフレームを示す。
【図８】膜状部材の取付手順を示す平面図で、膜状部材の前縁部を引っ張って縦係止部材をフレーム前縁部に引っかける状態を示す。
【図９】本発明にかかる膜状部材の取付構造を椅子の座構造物に適用した他の実施形態を示す平面図である。
【図１０】拡張縁部と横係止部材の他の実施形態を示す斜視図である。
【図１１】拡張縁部と横係止部材の他の実施形態を示す横断面図である。
【図１２】本発明にかかる膜状部材の取付構造を椅子の座構造物に適用した更に他の実施形態を示す平面図である。
【図１３】本発明の膜状部材の取付構造を適用したパーテーションの実施形態を示す斜視図である。
【図１４】従来の膜状部材を利用した座構造物の一例を示す部分断面斜視図である。
【図１５】従来の膜状部材を利用した座構造物の他の例を示す部分断面斜視図である。
【図１６】従来の膜状部材を利用した座構造物の更に他の例を示す縦断面図であり、（Ａ）は嵌合前、（Ｂ）は嵌合後をそれぞれ示す。
【符号の説明】
１膜状部材
２フレーム
２ａ，２ｂフレームの拡張縁部
２ｆフレームの前縁部
２ｒフレームの後縁部
３ａ，３ｂ横係止部材
４ｆ，４ｒ縦係止部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mounting structure for a membrane member. More specifically, the present invention relates to a membrane-like elastic support element and a frame, or a partition when a structure such as a chair seat or a backrest is constituted by a membrane-like elastic support element and a frame supporting the same. The present invention relates to an elastic membrane-like surface member used as a flexible wall member (in this specification, these membrane-like elastic support elements or surface members are collectively referred to as membrane-like members) and a frame mounting structure for supporting the same.
[0002]
[Prior art]
In recent years, without using cushioning materials such as urethane foam and other rigid substrates such as plywood, steel plates, and plastic plates, and elastic materials such as stretchable mesh materials and sheet materials, they are elastic membrane elements. A technology has been proposed in which an elastic support structure (seat or backrest, etc.) is composed of the frame that supports it and the frame that supports it (No. 8-8673). Such a support structure that exhibits elasticity combining a film-like elastic support element and a frame is generally attached in a state where a tension is applied to the film-like member with respect to the frame. For example, in the case where a frame 102 made of resin is molded and integrated on the periphery of the film-like member 101 as shown in FIG. 14, the film-like member 101 in a state where a certain tension is applied by the clamping device is attached to the frame portion. The resin material is injected after being placed in a mold for molding the film 102, and at the same time as the frame 102 is molded, the membrane member 101 is fixed and integrated. The film-like member 101 protruding from the periphery of the frame 102 is removed from the mold and cut off after the frame 102 is cured. Further, as a method of integrating the frame and the film member by applying tension to the film member without using the clamping device, the film member without applying tension is placed in the mold and then the frame. There has also been proposed a technique in which a film-like member is contracted and tensioned by injecting and molding the product after passing through a heating furnace (Japanese Patent Laid-Open No. 2001-78852).
[0003]
Further, as a structure for attaching the film-like member other than the method of integrating the frame and the film-like member by injection molding, an attachment method in which the film-like member 101 is hooked on the frame 102 with a hook 103 as shown in FIG. As shown in FIG. 16, there is a structure in which the film-like member 101 supported with tension applied by a jig 106 is sandwiched and fixed between metal or resin frames 104 and 105 divided along the longitudinal direction. In this structure, since the edge of the film-like member 101 that has been clamped to apply tension protrudes from the frames 104 and 105, the protruding portion is later cut.
[0004]
Furthermore, in the field of partition, in recent years, fabric screens have been adopted as face members to reduce the weight and to replace the hard impression received when using hard materials such as steel plates and plate materials. It is considered to give a kana impression, touch and texture. In this case, since it is necessary to attach the screen to the frame without slackening, a method of pulling the screen up and down through the bar-like members passed through the upper and lower ends of the screen and supporting it on the support column has been conventionally used. Proposed.
[0005]
For example, there is one in which a horizontal reed penetrating through the sewn cylindrical portions of the upper and lower ends of the cloth screen is hooked and supported between two supportable columns (Japanese Patent Laid-Open No. 2001-152583). The reed on the upper end side is hooked on the flange of the upper support member provided on the support column, and the recumbent on the lower end side is suspended by the screen. Each reed has a disc-shaped flange and an annular groove at both ends thereof, and the flange portion of the lower presser member that is slidably attached to the upper support member and the support column is fitted into the annular groove portion, respectively. By being engaged with each other, it is detachably attached to the left and right columns. Then, the screen is tensioned in the vertical direction by the reed at the lower end of the suspended screen and the weight of the lower pressing member. There has also been proposed a screen panel in which the tension of the screen can be adjusted by a tension adjusting mechanism using an adjusting screw (Japanese Patent Laid-Open No. 2000-1932). In this screen panel, a flexible surface member such as cloth is attached between a pair of bars constituting the frame, and one of the bars is adjusted to move away from or close to the other bar by rotating an adjusting screw. By doing so, the tension of the surface member can be adjusted. Here, the tension adjusting mechanism that adjusts the tension of the surface member includes an upper and lower crosspiece fixed to the left and right frame members, a fixed portion, and a movable portion that is inside the fixed portion and holds the surface member. The at least one movable part is supported by an adjustment screw so as to be movable in the vertical direction.
[0006]
[Problems to be solved by the invention]
However, the mounting method by injection molding in which the film-like member is integrated with the frame at the same time as injection molding of the frame necessitates capital investment such as a large and expensive metal mold or clamping device, and increases the cost. In addition, the method of heating and tensioning the molded product after mold release does not require a large clamp device, but requires heat treatment. In addition, since the membrane member and the frame are integrated, it is difficult to adjust even if the tension is weak, and the membrane member is removed from the frame for washing, or replaced according to your preference and application. You can't do it.
[0007]
Further, even in the method of sandwiching the film-like member 101 with tension shown in FIG. 16 between the frames 104 and 105, it takes time to apply the tension and an additional facility for applying the tension is required. In addition, the work of trimming the protruding film-like member 101 is also required. In addition, when attaching a film-like member to the frame with a tacker stop or the like, it is necessary to stop it with a tucker or apply it to the hook 103 while applying a tension. Variation tends to occur.
[0008]
In addition, in the screen panels using elastic surface members, all the surface members are stretched with tension applied in the vertical direction, but are supported if no tension is applied in the horizontal direction. Since it is not even done, depending on the material of the face member, the left and right edges may sag or wave, which may give a cheap feeling. That is, since the entire surface cannot be strongly stretched, there is a problem that it is not possible to obtain a sense of stability or a hard feeling like a panel surface using a steel plate as a core material. In addition to the frame, a tension adjusting mechanism or the like is required, and the weight increases accordingly, the structure becomes complicated, and the number of parts increases, resulting in high costs. Furthermore, if the adjustment work is not carried out by synchronizing the left and right tension adjustment mechanisms, there is a risk that the movable part inside the cross will be inclined or distorted, so the adjustment work is not simple and requires labor. Become. Furthermore, a dedicated jig and equipment for assembly are required, and there is a problem that the assembly workability is troublesome and the cost is increased. In addition, the number of parts is large and the cost is high, and there is a problem that the advantage of adopting the elastic wall material made of a film-like member cannot be fully utilized. That is, there is a problem that the material, color, design, etc. of the film-like member cannot be freely changed according to the consumer's preference.
[0009]
Therefore, the present invention does not require special equipment such as a mold for insert molding of the membrane-like member and the frame and a clamping device for applying tension, and the operation of attaching the membrane-like member to the frame by hand and It is an object of the present invention to provide an attachment structure for a membrane member that can be easily detached from the frame. Furthermore, the present invention is easy to replace only the membrane member, and can be washed and replaced even when the membrane member is soiled or damaged. An object of the present invention is to provide an attachment structure for a film-like member that can be freely selected and changed in color, design and the like. Furthermore, an object of the present invention is to provide an attachment structure for a membrane member that facilitates separation and disposal of the membrane member and the frame.
[0010]
[Means for Solving the Problems]
In order to achieve this object, claim 1 is provided. And 2 The invention described in the above is a film member mounting structure that constitutes an elastic support surface that exhibits elasticity with a frame and a film member that has a peripheral edge attached to the frame. Is An extended edge where the distance between at least the outer edges of the two opposing sides is wider than the insertion end of the membrane member And a front edge portion and a rear edge portion for locking the front end and the rear end of the membrane member Has a membrane-like part The material has a rectangular shape as a whole and is formed in a gentle arc shape with at least two corners inside. A lateral locking member that engages with the extended edge of the frame in the width direction and is slidable back and forth along the extended edge And a vertical locking member that locks the film-like member by locking the film-like member in the front-rear direction by engaging the front edge portion and the rear edge portion of the frame. The lateral locking member is engaged with the extended edge of the frame and slid to attach the membrane member to the frame. At the same time, the membrane member is tensioned using the shape of the frame. And then At the same time as attaching the membrane member to the frame by engaging the vertical locking member with the front edge and rear edge of the frame For membrane members Apply tension Like .
[0011]
Therefore, when the lateral locking members on both sides of the membrane member are engaged with the extended edge portion of the frame and slid in the depth direction along the extended edge portion, the width of the membrane member is gradually widened to the mounting position. When reaching the above, a certain tension determined by the size of the membrane member, the distance between the extended edges of the frame, and the distance between the front and rear edges is applied. In other words, when the membrane member is slid along the extended edge of the frame and assembled, the gap between the left and right extension edges of the frame widens, so that the membrane member is pulled in the width direction and tension is applied. At the same time as attaching the membrane member to the frame, a predetermined tension in the width direction is applied. In addition, when a vertical locking member that engages with the front edge portion and the rear edge portion of the frame is provided, tension is also applied in the depth direction by attaching the vertical locking member to the frame, and at the same time, a film-like member Is fixed in place. In this case, while the film-like member is fixed in the front-rear and left-right directions with respect to the frame by the horizontal locking member and the vertical locking member, it is possible to perform reliable fixing that prevents displacement even when external force is applied. The membrane member can be easily removed from the frame simply by removing the vertical locking member and sliding the horizontal locking member in the opposite direction.
[0012]
Furthermore, the invention according to claim 3 applies the attachment structure of the membrane member according to claim 1 or 2 to a seat or backrest of a chair composed of a frame and a membrane-like elastic support element attached to the frame. Like to do. That is, the frame is a frame that constitutes the seat or back of the chair, and the membrane-like member is supported by the frame in a state where tension is exerted to exhibit the necessary elasticity, and the elastic support that constitutes the seat surface or the back surface. As an element. In this case, the lateral locking member of the membrane member is engaged with the extended edge portion of the frame and slid in the depth direction, and then the vertical locking member is only locked to the front edge portion and the rear edge portion of the frame. With this simple operation, the film-like member can be fixed to the frame in a state where the film-like member is given a tension that exerts the elasticity required as a seat or a backrest. In addition, the frame and the film-like member can be disassembled with a simple operation by simply removing the longitudinal locking members from the front edge portion and the rear edge portion of the frame and then sliding the film-like member in the direction opposite to that during assembly. . Therefore, the tension and elasticity of the seat and the backrest can be changed by adjusting the tension applied by selecting the membrane member. In addition, even if the membrane member sags or sags due to secular change or the like, it can be regenerated by exchanging only the membrane member, and the stiffness and elasticity of the seat and back can be exchanged as desired. In addition, when the frame is formed of an annular flat plate, the seat and the backrest can be thinned.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the configuration of the present invention will be described in detail based on an example of an embodiment shown in the drawings.
[0014]
1 to 8, an embodiment in which the membrane member mounting structure of the present invention is applied to a chair seat structure will be described. In this embodiment, the frame 2 constitutes a seat frame of the chair, and the membrane member 1 is an elastic support element that is supported by the frame 2 in a state in which tension is applied to exert the necessary elasticity. It is used as a substitute for the seat plate when the seat surface is constituted by or when the seat is constituted by placing urethane foam and an overlying fabric thereon.
[0015]
This seat structure constitutes an elastic support surface that exhibits elasticity by the frame 2 and the film-like member 1 to which the peripheral portion is attached and stretched, and at least two sides facing the frame 2 are configured. While the outer edge portions are provided with extended edges 2a and 2b that are wider than the insertion end of the membrane member 1, the membrane member 1 engages with the extension edges 2a and 2b of the frame 2 in the width direction. The lateral locking members 3a and 3b are slidable in the front-rear direction along the extended edges 2a and 2b. The horizontal locking members 3a and 3b are engaged with the extended edges 2a and 2b of the frame 2 and are slid. At the same time that the membrane member 1 is mounted on the frame 2, tension is applied to the membrane member 1 using the shape of the frame 2. Further, the frame 2 has a front edge portion 2f and a rear edge portion 2r for engaging the front end and the rear end of the film-like member 1, and the film-like member 1 has a front edge portion 2f and a rear edge portion 2r of the frame 2. The vertical locking members 4f and 4r are provided to fix the film-shaped member 1 by applying tension in the front-rear direction to the film-shaped member 1, and the vertical locking members 4f and 4r are connected to the front edge 2f and the rear of the frame 2. At the same time as the membrane member 1 is mounted on the frame 2 by engaging with the edge 2r, a tension is applied. Here, the vertical locking members 4f and 4r are not provided in some cases, and a shift prevention means is provided between the horizontal locking members 3a and 3b and the extended edges 2a and 2b, or the film-like member 1 A slip prevention means is provided for fixing the front end and the rear end of the film-like member 1 so as not to be shifted with respect to the front edge portion 2f and the rear edge portion 2r of the frame 2 without applying a tension in the longitudinal direction or the front-rear direction. Anyway. For example, a convex portion is formed on the inner surface of the lateral locking members 3a and 3b, while a concave portion fitted to the convex portion is formed on the surface of the extended edge portions 2a and 2b, or the lateral locking members 3a and 3b. May be prevented by screwing the extended edges 2a and 2b with screws. In this specification, the sliding direction of the membrane-like member is referred to as the longitudinal direction or the front-rear direction, regardless of the front-back, left-right, and right-and-left directions of the structure. Call it. Further, the width direction or the left / right direction / lateral direction is used to mean a direction orthogonal to the sliding direction. Moreover, the symbol F in each figure has shown the front side of the chair, and R has shown the back side, In this embodiment, the front-back direction corresponds with the sliding direction.
[0016]
The film-like member 1 is formed smaller than the frame contour shape so as to extend when a desired tension is applied when it is attached to the frame 2. The film-like member 1 of the present embodiment has a generally rectangular shape as a whole, is formed in a gentle arc shape with four corners inside, and is provided so that the frame 2 is exposed at each corner portion. This prevents the occurrence of slack in the curved corner portion. Then, lateral locking members 3a and 3b or vertical locking members 4f and 4r are provided on each side clearly divided into four sides by a semicircular corner portion.
[0017]
Here, the membrane member 2 is a stretchable material or composition / structure that can slide at least between the extended edges 2a and 2b, and has rigidity as an elastic support element of the seat structure. If there is, the material is not particularly limited, but the use of mesh or sheet, film, fabric, non-woven fabric, etc. is preferable. In particular, a mesh sheet or a fiber reinforced sheet is preferable. Among them, a recyclable olefin resin or polyester mesh sheet is preferable. For example, the use of a woven fabric of polyester yarn and elastomeric polyester yarn (for example, a mesh sheet known as a trade name Dimetrole manufactured by DuPont) is used. preferable. This polyester mesh sheet has little sag. And since it is a mesh sheet | seat and elasticity and air permeability are favorable, a comfortable seat with a comfortable seat can be obtained. Also suitable as a fiber reinforced sheet is a sheet material made of polyester elastomer and having a thickness of about 1.0 mm, and its back surface is reinforced with a reinforcing fabric such as 120 to 240 denier nylon or polyester taffeta. Things. By reinforcing the sheet material with the reinforcing fabric, even a sheet material having a thickness of about 1.0 mm can support the load with sufficient elasticity. However, the membrane member 1 is not particularly limited to the above-described mesh sheet or fiber reinforced sheet, but is a material / structure that exhibits sufficient rigidity and elasticity as an elastic support element of a structure (for example, a seat). -The thing of a composition is used suitably. In the present specification, “sheet” means a shape having a thickness smaller than the width, but particularly means a thickness of about 0.1 to 2.0 mm. The concept includes.
[0018]
The lateral locking members 3a and 3b engage with the extended edges 2a and 2b of the frame 2 in the width direction and can slide in the front-rear direction and the vertical direction along the extended edges 2a and 2b. In this case, as shown in FIG. 1, it is formed in a substantially linear shape in accordance with the shapes of the extended edges 2a and 2b on both sides of the frame 2. The lateral locking members 3a and 3b are made of a structure and a material that can slide in the front-rear direction and the vertical direction. Further, the vertical locking members 4f and 4r are locked to the front edge portion 2f and the rear edge portion 2r of the frame 2 to give the film-like member 1 tension in the front-rear direction and fix the film-like member 1. In the present embodiment, the frame 2 is formed in an arcuate shape in accordance with the shapes of the front edge 2f and the rear edge 2r. In the case of this embodiment, these laterally engaging members 3a, 3b or longitudinally engaging members 4f, 4r have a “U” -shaped cross-sectional shape that elastically sandwiches the edges 2a, 2b, 2f, 2r of the frame 2. For example, an olefin-based resin molded product such as PET (polyethylene terephthalate) or PP (polypropylene) is used, and the upper side extends from the lower side and is sewn to the edge of the film-like member 1. Of course, since the vertical locking members 4f and 4r do not need to be slid with respect to the frame 2, it is not necessary to use the same material and structure as the horizontal locking members 3a and 3b. It suffices to have a shape that is easily hooked to 2r and is difficult to come off, for example, a hook shape that can be locked in the vertical direction. Further, the lateral locking members 3a, 3b or the vertical locking members 4f, 4r are not limited to resin molded products, but may be so-called sheet metal products obtained by bending spring steel or the like, or aluminum extrusion molded products. Absent.
[0019]
Thus, it is preferable that each of the lateral locking members 3a and 3b is a resin molded product from the viewpoint of reducing the weight of the seat, and the coldness like metal is not felt when exposed to the surface of the structure. Further, here, sewing is adopted as the fixing method, but it is not particularly limited to this, and it may be appropriately selected from adhesion or other joining means according to the material of each of the locking members 3a, 3b, 4f, 4r. The method is not limited to any method as long as a desired mounting strength can be obtained. It is not necessary to use the same material for all of the lateral locking members 3a and 3b and the vertical locking members 4f and 4r. However, in the case of a lateral locking member that is slid while applying tension, it is slidable with respect to the frame. It is preferable to use resin. Further, the membrane member 1, the lateral locking members 3a and 3b, the vertical locking members 4f and 4r, and the sewing thread or adhesive are made of an olefin resin such as PET (polyethylene terephthalate) or PP (polypropylene). For example, each part can be discarded without being separated, or pulverized and melted to be recycled as an injection raw material.
[0020]
The frame 2 configured as a seat frame of the chair is composed of a substantially rectangular circular frame that is supported by a seat receiving member 6. In the case of the present embodiment, the seat receiving member 6 is configured by a support plate 6a at two front and rear positions that support the frame 2 in a wing-like shape and a base 6b that receives and supports the two support plates 6a at the center. Yes. As shown in FIG. 2, the support plate 6a is a channel material that is bent upward from the end of the portion that contacts the base 6b so that both ends are lifted. The base 6b of the seat receiving member 6 is not attached. The base 6b is made of a channel material as shown in FIG. 2, for example, and a support plate 6a is fixed to the upper surface by welding or the like. In this embodiment, the frame 2 and the seat receiving member 6 are both formed of a metal plate or an iron plate, but may be formed of other materials such as synthetic resin or fiber reinforced synthetic resin depending on circumstances.
[0021]
Further, the frame 2 of the present embodiment has four corners that are moderately rounded so as to be suitable as a chair seat (see FIG. 1). Further, as shown in FIG. 3, the front edge 2f of the frame is gently inflated toward the outside, and the back of the thigh of the seated person is pressed so as to be gently inclined so as to hang down to the front side. It is provided so as to give a comfortable sitting comfort. The rear edge 2r is also curved so as to bulge outward. Furthermore, extended edges 2a and 2b are formed on both sides so that at least the distance between the outer edges widens in the depth direction (in the present embodiment, the front side F of the chair). In the case of this embodiment, the extended edges 2a and 2b are slightly inclined with respect to the center line as shown in the figure, and the widths of the straight edges are gradually widened from the rear side to the front side of the chair. (In a taper shape). In the present embodiment, the frame 2 has an annular flat plate shape as shown in FIGS. Thus, when the frame 2 is made flat, the thickness of the seat itself can be reduced, and the weight of the chair can be reduced.
[0022]
Furthermore, as shown in FIG. 3, the recessed part 5 is provided in the site | part by the side of the outer peripheral side of the back surface of the frame 2 over the perimeter. This concave portion 5 is provided when the vertical locking member 4r (or the vertical locking member 4f and the horizontal locking members 3a and 3b, which are not shown here) is engaged (hooked) so as to be fitted thereinto. The portion of the vertical locking member 4r that wraps around the hook rear end side fits into the concave portion 5 and is flush with the rear surface of the frame 2 or is recessed from the rear surface. It is possible to reduce the thickness of the frame 2 including the members 3a and 3b and the vertical locking members 4f and 4r, which is preferable in appearance.
[0023]
Next, the attachment procedure when attaching the membrane member 1 of the present embodiment configured as described above to the frame 2 will be described with reference to FIGS. 4 to 8, illustration of the seat receiving member 6 (support plate 6a and base 6b) is omitted.
[0024]
First, the film-like member 1 is attached by sliding along the extended edges 2a and 2b of the frame 2 from the rear side of the frame 2 in which the distance between the extended edges 2a and 2b is relatively narrow (FIG. 4). At this time, the front ends of the lateral locking members 3a and 3b are opened and fitted so as to be sandwiched between the rear end portions of the extended edge portions 2a and 2b of the frame 2 (FIG. 5). When the film-like member 1 is further slid forward and in the depth direction from this state (FIG. 6), the lateral locking members 3a and 3b move along the frame 2, so the distance between the left and right lateral locking members 3a and 3b. And a tension in the width direction is applied to the film-like member 1. Further, the film-like member 1 is slid in the depth direction as it is, and the rear side vertical locking member 4r is hooked on the rear edge 2r of the frame 2 (FIG. 7), and then the front side vertical locking as shown in the figure. The member 4f is further pulled forward from the front end edge 2f of the frame 2, and the vertical locking member 4f is hooked on the front edge of the frame 2 (FIG. 8). Thereby, tension is given also to the depth direction and it attaches.
[0025]
The operation of attaching the membrane member 1 to the frame 2 is completed by the simple operation as described above. In the membrane member 1 attached to the frame 2 in this way, the lateral locking members 3a and 3b and the vertical locking members 4f and 4r are hooked on the edges 2a, 2b, 2f and 2r of the frame 2, respectively. , Tension is applied appropriately in the front and rear, left and right directions, and the entire surface is stretched without slack. When the membrane member 1 is removed for replacement or the like, the left and right lateral locking members are removed after removing the vertical locking member 4f hooked on the front edge 2f, contrary to the above-described mounting operation. If the whole film-like member is slid to the rear edge 2r side with 3a and 3b, it can be easily removed.
[0026]
FIG. 13 illustrates an example in which the membrane member mounting structure of the present invention is applied to a partition. In the present embodiment, the same components as those in the above-described embodiment are denoted by the same reference numerals, detailed description thereof is omitted, and a partition-specific structure and the like will be described.
[0027]
The partition 11 of this embodiment employs the membrane member as a partition wall material / membrane surface member (hereinafter simply referred to as a membrane member) having elasticity, and the frame 2 that forms the contour shape of the partition 11 The film-like member 1 is stretched and attached to give a soft and warm impression and a feeling of touch and material.
[0028]
The frame 2 functions as a skeleton that holds the periphery of the film-like member 1 and determines the form as a partition, and can take an arbitrary frame shape. In the case of the present embodiment, the frame 2 is a rectangular annular frame having a flat surface, and the peripheral locking members 3a and 3b and the vertical locking member of the film-like member 1 are provided on the peripheral edges 2a, 2b, 2f and 2r. 4f and 4r are fitted, and the film-like member 1 is provided so as to be tightly attached. The frame 2 does not need to be made of a material / thickness that is so rigid in terms of structure, except for applications that are supposed to support particularly large loads. Drawing materials, plated steel sheets and pipes, zinc die casts that are lightweight and excellent in rigidity, plastics, etc. are mainly used, and wood is also used in some cases. The frame 2 may be provided with legs so as to be able to stand on its own, or may be provided with a fixture (not shown) and supported by furniture such as a desk or table. Further, it is preferable that the frame 2 is formed so as to be divided into several parts and can be connected by a joint or the like. In this case, the film-like member 1 and the frame 2 can be separated and further the frame 2 can be further divided and stored compactly during transportation.
[0029]
Also, the membrane member 1 is of a material, structure, or composition that exhibits sufficient rigidity and elasticity as a structural material, unlike the case of the above-described embodiment used for the seat or back of a chair. There is no need, and any material and structure that can be given a certain tension can be used. From the viewpoint of partition function and decorativeness, materials and structures that are suitable are appropriately employed. For example, as the film-like member 1 as a partition, almost all materials such as fabrics, woven fabrics, nonwoven fabrics, meshes, films, Japanese papers made of natural fibers or synthetic fibers can be used. For example, fabrics made of olefin resin or polyester resin and mesh sheets such as woven fabrics of polyester yarn and elastomeric polyester yarn (known as DuPont's trade name Dimetrole) are recyclable and preferable. In addition, this diametrole has little sag and is a mesh sheet, so it has good elasticity and breathability, so it will not relax even for long-term use, and at the same time acts as a partition that blocks the line of sight. It can be distributed and does not interfere with air conditioning, creating a comfortable and comfortable environment. Of course, even with other materials, the mesh structure can provide effects such as both shielding of the line of sight and air permeability, and the elegance and coolness created by the unique feel and gloss of each material. Will create a more comfortable environment. In addition, the use of the fiber reinforced sheet makes it possible to apply a large tension and give a hard texture in that state.
[0030]
Although the frame 2 in the partition 11 is not shown in detail in FIG. 13, for example, the upper frame (portion corresponding to the upper side) 2r is slightly shorter than the lower frame (portion corresponding to the lower side) 2f. The trapezoidal shape gradually becomes narrower toward the upper frame 2r. That is, in the frame 2 of the present embodiment, the direction from the upper side 2r to the lower side 2f is the depth direction, and so-called extended edges 2a and 2b are formed on both sides of the frame 2 so that the distance between the outer edges increases toward the lower side 2f. It is configured. On the other hand, the membrane member 1 includes lateral locking members 3a and 3b that can slide along the extended edges 2a and 2b of the frame 2 on both sides thereof, and can be locked to the upper frame 2r and the lower frame 2f. Vertical locking members 4f and 4r are provided. Further, the relationship between the size of the frame 2 and the size of the membrane member 1 varies depending on the stretchability of the membrane member 1 and how much tension is applied at the time of attachment, but the membrane is in a state before the tension is applied. The shaped member 1 is formed to be slightly smaller than the frame 2.
[0031]
In such a partition 11, the membrane member 1 can be easily attached to the frame 2, and since no jig or device is required to apply tension to the membrane member 1, it is simple and inexpensive. Become. That is, the film-like member 1 is covered from the upper frame 2r side of the frame 2, and the horizontal locking members 3a and 3b are locked to the extended edge portions 2a and 2b of the horizontal frame to be in a predetermined position (in the partition 11 shown in FIG. 13). By sliding the entire surface of the frame 2 to a position where the entire surface of the film member 1 covers the film member 1, tension is applied to the film member 1 using the frame shape. In this case, the lateral locking members 3a and 3b that slide along the extended edge portions 2a and 2b on both sides gradually widen the space between them, and apply a predetermined tension in the width direction to the membrane member 1. To do. In addition, if the upper vertical locking member 4r is locked to the upper frame 2r at this predetermined position, the lower vertical locking member 4f is locked to the lower frame 2f, so that A predetermined tension is also applied in the vertical direction and the assembly of the partition 11 is completed. In addition, when the partition 11 is disassembled or the membrane member 1 is replaced, it can be easily implemented by performing the reverse operation to that described above.
[0032]
Since the partition 11 configured as described above can be easily assembled and disassembled in the office, the transportation cost can be reduced by extremely reducing the size during transportation. In addition, since the replacement of the membrane member 1 can be easily performed in an office or the like, the material, color, design, etc. of the membrane member 1 can be freely selected according to the office environment or the like of the person working there. Can be selected / changed. Further, even when the wall material of the membrane member 1 is soiled or damaged, it can be easily removed and washed or replaced. Furthermore, the number of parts is small and the cost is low.
[0033]
The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the scope of the present invention. For example, in the present embodiment, the case where the film-like member 1 is attached to the metal annular frame 2 has been described. However, the frame 2 is not limited to such a shape, and the distance between at least the outer edges of the two opposing sides. However, it is only necessary to have the extended edges 2a and 2b that are wider than the charging end of the membrane member 1, and there are no other shape restrictions. For example, as shown in FIG. 9, the frame 2 may be divided into four members, ie, a front part 2f, a rear part 2r, and both side parts 2a and 2b. Even in such a case, the frames 2a and 2b on both sides have a shape or arrangement in which a portion between them is wider in the depth direction than the side of the rear frame 2r where the membrane member is inserted. In other words, it may be arranged so that the portion closer to the front frame 2f side becomes wider (in FIG. 9, it gradually spreads from the rear side to the front side). Further, if the front vertical locking member 4f and the rear vertical locking member 4r can be locked by the front and rear frames 2f and 2r, the membrane member 1 can be easily attached as in the case of the above-described embodiment. At the same time, tension can be applied. As shown in FIG. 9, the front and rear frames 2f and 2r are supported by a base 6b. Further, it is sufficient that the extended edges 2a and 2b are formed so that at least the distance between the outer edges is widened, and the inner edges of the extended edges 2a and 2b are parallel or oppositely directed toward the depth side. Even if the relationship is narrowed, there is no problem.
[0034]
Further, the shape of the frame 2 is not limited to a plate shape as in the present embodiment. For example, when the frame 2 is divided as shown in FIG. 9, the extended edge portions 2a and 2b may be configured by a pipe frame made of a straight pipe (see FIG. 10). In this case, the lateral locking members 3a and 3b may adopt pipes that can be fitted and slid around the pipe frames 2a and 2b, or, as shown in FIG. Slit 12 is provided in the longitudinal direction of 2a and 2b, and T-shaped lateral locking members 3a and 3b that pass through the slit 12 and hook the head 13 are adopted, and can slide in the tube axis direction and the longitudinal direction. You may do it.
[0035]
Further, the two opposing sides that constitute the extended edges 2a and 2b are not limited to the C-shape shown in the figure, but may have a shape having a maximum extended region in the middle, for example, a shape such as “()” or “O”. good. That is, the extended edges 2a and 2b of the frame 2 are not limited to those in which the distance between the edges is gradually increased, and the film-like portion is not formed in the portion excluding the insertion end of the film-like member 1 into the frame 2. Includes all of those that can be displaced such that the distance between the lateral locking members 3a and 3b is widened by sliding at least the film-like member 1, such as a shape having parallel edges for locking the member 1 with tension. . That is, the inclination (taper) of the extended edges 2a and 2b with respect to the sliding direction does not need to be given (formed) to the entire sliding area of the frame 2, and a partial area, for example, the vicinity of the end of the depth may be set as a parallel interval. good. For example, as shown in FIG. 12, the frame itself is gently curved, the space between the extended edges 2a and 2b on both sides of the frame 2 is opened, but the rate of increase decreases as it approaches the front side, and gradually converges to a certain width. It does not matter if the shape is
[0036]
Further, in the present embodiment, the horizontal locking members 3a and 3b and the vertical locking members 4f and 4r are sewn and fixed to the membrane member 1, but in some cases, these horizontal locking members 3a and 3b can be attached and detached. It is also possible to attach it so that the attachment position with respect to the membrane member 1 can be switched freely. For example, a plurality of rows of fasteners (such as hooks) that can be attached to and detached from the membrane member 1 are provided near both sides of the membrane member 1, and an arbitrary fastener row is selected from these rows, By attaching the fixing members 3a and 3b to the fixing members 3a and 3b, the mounting positions of the lateral locking members 3a and 3b can be switched. Alternatively, whether a plurality of locking members with different mounting positions are provided on the membrane member, or a locking member having a plurality of mounting positions with respect to the membrane member is prepared, and a locking member to be locked to the expansion edge is selected. The tension at the time of attachment of the membrane member 1 can be changed as appropriate by selecting the attachment position of the engagement member attached to the membrane member and changing the attachment width of the lateral engagement members 3a and 3b on both sides. it can.
[0037]
Further, in the present embodiment, the example in which the lateral locking members 3a and 3b and the vertical locking members 4f and 4r are arranged one by one on the four sides of the film-like member 1 is shown. You may make it divide into multiple or further finely along. For example, when a relatively complicated shape is adopted as the frame and the film-like member, it is preferable to provide the lateral locking members 3a and 3b divided into a plurality of parts. In this case, even when the frame 2 has a complicated shape, it can be slid without being deformed and deviated along the contour shape of the extended edge by using such divided lateral locking members 3a and 3b. It becomes like this.
[0038]
Further, in the present embodiment, the case has been described where the shape of the frame 2 is front wide and narrow, and the film-like member 1 is slid on the frame 2 from the rear side. Alternatively, the extended edges 2a and 2b may be provided so as to taper in the width direction instead of the front-rear direction of the chair, or only one outer edge of a pair of opposing frame sides is inclined with respect to the sliding direction. The extended edge portion may be configured by providing
[0039]
Moreover, in this embodiment, although the example applied to the seat of the chair was shown, if this attachment structure is applied to the backrest of a chair, the film-like member 1 which comprises a backrest will be simply demonstrated like the case of a seat. It can be attached or replaced, and the backrest can be made thinner and lighter. Furthermore, the attachment structure of the membrane member 1 of the present invention is suitable for application to any device or apparatus that can easily attach or replace the membrane member 1 other than the seat and backrest of these chairs. The scope of application is not limited to chairs.
[0040]
【The invention's effect】
As is clear from the above description, the claim 1 And 2 According to the mounting structure of the membranous member described above, the tension can be applied at the same time as the membranous member is mounted using the shape of the frame. A special facility such as a mold is not required, and the attachment of the film-like member and the tensioning operation can be performed manually, and an attachment process and a heat treatment process for fastening the film-like member while applying tension are not required. Also, the removal of the membrane member can be performed by a simple operation of removing the vertical locking member on the depth side from the front edge of the frame and sliding the membrane member so as to pull it toward the front side. Therefore, it is a low-cost mounting structure suitable for low-volume production, and the manufacturing cost can be greatly reduced.
[0041]
In addition, since the structure is such that the film member is slid and the locking member is hooked, there is no need for mounting screws or hooks, so that parts and labor can be saved, and the frame and film member can be easily separated. Can be separated and discarded. Moreover, the membrane member can be replaced even when the tension is weakened or damaged due to the sag of the membrane member, and even when the membrane member becomes dirty, it can be easily washed or replaced. It is possible to freely select and change the material, color, design, etc. of the film-like member according to preference and application. Furthermore, since the tension applied by assembly is fixedly determined by the size and material of the film-like member and the distance between the frames, even in mass production, regardless of the skill level and equipment of the operator Stable tension can be applied and variation in quality can be reduced.
[0042]
Also , Vertical By attaching the locking member to the frame, tension is also applied in the depth direction, and at the same time, the membrane member is fixed at a predetermined position. Is prevented. Furthermore, the film-like member can be easily removed from the frame simply by removing the vertical locking member and then sliding the horizontal locking member in the opposite direction.
[0043]
According to the third aspect of the present invention, compared to the integral attachment method in which the formation of the frame of the structure such as the seat and the backrest and the attachment of the membrane member are simultaneously performed by resin molding using a mold, a large amount of metal Since the mold investment is not required, it is a low-cost mounting structure suitable for small-volume production, and the manufacturing cost can be greatly reduced. In addition, it is possible to easily change the rigidity and elasticity of the seat and the backrest by adjusting the tension applied by selecting the membrane member. Furthermore, even if the membrane member is sagted or loosened due to secular change or the like, it can be regenerated by exchanging only the membrane member, and the rigidity and elasticity of the seat and back can be exchanged as desired. In addition, since the thickness of the structure depends on the thickness of the frame, the seat and backrest can be reduced. In addition, since the number of components can be reduced compared to a structure in which a film-like member is sandwiched between an inner frame and an outer frame, there is an advantage that the cost can be reduced. Moreover, the attachment and removal of the elastic support element, which is a membrane-like member, from the frame does not require a dedicated jig or equipment, and can be easily performed by hand or using simple tools. The user can freely select and change the material, color, hardness, etc. of the membrane member according to the application and preference, and even if the membrane member becomes dirty or damaged, it can be easily removed and washed or replaced can do.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment in which a membrane-like member mounting structure according to the present invention is applied to a seat structure of a chair.
FIG. 2 is a front view of the same structure.
FIG. 3 is a left side view of the same structure.
FIG. 4 is a plan view showing a procedure for attaching a film-like member of the same structure, showing the film-like member and the frame just before assembly.
FIG. 5 is a plan view showing a procedure for attaching the membrane member of the same structure, showing the membrane member and the frame at the start of charging.
FIG. 6 is a plan view showing the attachment procedure of the membrane member, and shows the membrane member and the frame in the middle of charging.
FIG. 7 is a plan view showing the attachment procedure of the membrane member, and shows the membrane member and the frame when the charging is completed.
FIG. 8 is a plan view showing the attachment procedure of the membrane member, and shows a state in which the front edge portion of the membrane member is pulled and the vertical locking member is hooked on the front edge portion of the frame.
FIG. 9 is a plan view showing another embodiment in which the attachment structure of the membrane member according to the present invention is applied to a seat structure of a chair.
FIG. 10 is a perspective view showing another embodiment of the extended edge portion and the lateral locking member.
FIG. 11 is a cross-sectional view showing another embodiment of the extended edge portion and the lateral locking member.
FIG. 12 is a plan view showing still another embodiment in which the membrane-shaped member mounting structure according to the present invention is applied to a seat structure of a chair.
FIG. 13 is a perspective view showing an embodiment of a partition to which the membrane-shaped member mounting structure of the present invention is applied.
FIG. 14 is a partial cross-sectional perspective view showing an example of a seat structure using a conventional membrane member.
FIG. 15 is a partial cross-sectional perspective view showing another example of a seat structure using a conventional membrane member.
FIG. 16 is a longitudinal sectional view showing still another example of a seat structure using a conventional membrane-like member, wherein (A) shows before fitting and (B) shows after fitting.
[Explanation of symbols]
1 Membrane member
2 frames
2a, 2b Extended edge of the frame
Front edge of 2f frame
2r frame rear edge
3a, 3b Lateral locking member
4f, 4r Vertical locking member

Claims

In a mounting structure of a film-like member that constitutes an elastic support surface that exhibits elasticity with a frame and a film-like member that is stretched by attaching a peripheral edge to the frame , the frame has at least outer edges of two opposite sides interval has an edge and a trailing edge before locking the front end and the rear end of the extension edge and the film-like member extends than instrumentation Nyutan of the film-like member, said film member is rectangular as a whole It is formed in a gentle arc shape with at least two corners inwardly formed, and engages with the extension edge of the frame in the width direction and is slidable in the front-rear direction along the extension edge. Yokogakaritome member and giving the front-rear direction tension in the film-like member engages the leading edge portion and trailing edge portion of the frame and a longitudinal locking member for fixing the membrane-like member, the transverse Engage the locking member with the extended edge of the frame. The film-like member by id using the shape of simultaneously the frame and for mounting to the frame tension imparted to the film-like member, further, the front edge of the frame the longitudinal locking member and An attachment structure for a film-like member, wherein a tension is applied to the film-like member at the same time as the film-like member is attached to the frame by engaging with a rear edge portion.

In a structure for attaching a film-like member that constitutes an elastic support surface that exhibits elasticity by a frame and a film-like member that is stretched by attaching a peripheral edge to the frame, the frame has at least outer edges of two opposing sides. And an extended edge that extends beyond the insertion end of the membrane member, and a front edge and a rear edge that engage the front and rear ends of the membrane member, and the membrane member is generally rectangular. Formed in a gentle arc shape with four corners inwardly formed, and engaged in the width direction with the extended edge of the frame and slidable in the front-rear direction along the extended edge A locking member, and a vertical locking member that locks the film-like member by locking it to the front edge portion and the rear edge portion of the frame and applies a tension in the front-rear direction to the film-like member. A member is slid into engagement with the extended edge of the frame At the same time that the membrane member is mounted on the frame, a tension is applied to the membrane member using the shape of the frame, and the vertical locking member is attached to the front edge portion and the rear edge portion of the frame. The film-shaped member mounting structure is characterized in that a tension is applied to the film-shaped member at the same time as the film-shaped member is attached to the frame by engaging with the frame.

The frame is a frame that constitutes a seat or a backrest of a chair, and the membrane member is supported by the frame in a state in which a tension that exerts necessary elasticity is applied, and constitutes a seat surface or a backrest surface. The attachment structure for a film-like member according to claim 1, wherein the attachment structure is a support element.