JP3579892B2

JP3579892B2 - Chair with footrest

Info

Publication number: JP3579892B2
Application number: JP2001156379A
Authority: JP
Inventors: 寛栄丁
Original assignee: 寛栄丁
Priority date: 2000-05-25
Filing date: 2001-05-25
Publication date: 2004-10-20
Anticipated expiration: 2021-05-25
Also published as: KR100349631B1; KR20010107193A; JP2002000389A

Description

【０００１】
【発明の属する技術分野】
本発明は椅子に関し、特に、足載せ部の高さを着座者の多様な身体サイズに合うように自由に調節することができ、しかも椅子に着座している間に椅子が倒れることを防止し得る足載せ部を備えた椅子に関する。
【０００２】
【従来の技術】
一般に椅子は平均的な身体条件に合わせて均一な寸法で作製されるが、ワンセットとして使用される机又はテーブルの高さに応じて座部の高さが調節されるように高さ調節装置を備えたものもある。
【０００３】
かかる高さ調節装置によれば、椅子の座部と机又はテーブルとの間隔を一定に調節し得るという利点がある反面、着座者の足が床面に届かなくなって不安定な着座姿勢をもたらす場合があった。
【０００４】
上記問題を解決するための一発明として、ハンドリック・アール・バン・ヘッケン（Hendrik R.van Hekken）等に許与されたアメリカ特許第５、０１１、２２７号（1991.4.30.；「調整可能な足載せ部を備えた椅子」）がある。該発明の概略的な内容を図１０を参照しながら説明すれば、次の通りである。
【０００５】
同図に示すように、椅子１００は垂直支柱１０２の上端に座部１０４が結合されて成る。座部１０４の下側には足載せ部材が設置される。足載せ部材はハウジング１１０、水平フレーム１１２、足載せ部１１４、及び操作ハンドル１１６を含む。ハウジング１１０は座部１０４の下面から下向きに突出している。水平フレーム１１２はハウジング１１０の下端に回動自在に軸結合されている。足載せ部１１４は水平フレーム１１２の前方端部に結合される。操作ハンドル１１６はハウジング１１０の上端部に設置されて足載せ部１１４の高さを調節するようになっている。ハウジング１１０の内部にはシリンダー、ピストン、駆動ピンなど（図示せず）が設置されて水平フレーム１１２の回動角度が調節可能となっている。
【０００６】
従って、椅子１００の着座者は自分の身体条件と合うように足載せ部１１４の高さを調節することができる。しかしながら、このような構成では、着座者が操作ハンドル１１６を“Ａ”又は“Ｂ”方向に引っ張れば、水平フレーム１１２がハウジング１１０の下端の結合部位を中心として回動して足載せ部１１４の位置を上方又は下方に変更するようになっているため、多様な体形の使用者をそれぞれ楽な姿勢で受容することはできなかった。
【０００７】
また、従来の足載せ部１１４は地面に接触せず、空中に浮かんでいる状態である。従って、使用者が着座した状態で足載せ部１１４に足を載せて足載せ部１１４に荷重が集中した場合には、椅子１００と着座者が一緒に倒れて事故を起こす恐れがあった。これは、背の低い幼児や子供の場合にはより深刻な問題となる。
【０００８】
さらに、足載せ部１１４の高さを調節するための装置には、操作ハンドル、ピストン、シリンダー、駆動ピン等、多数の構成部品が要求されることも問題であった。
【０００９】
【発明が解決しようとする課題】
本発明は上記のような問題点に鑑みてなされたものであり、本発明の目的は、椅子に設置された足載せ部の高さ調節を容易に行うことができ、また、足載せ部に荷重がかかっても椅子の倒れが防止されるようにした足載せ部を備えた椅子を提供することにある。
【００１０】
【課題を解決するための手段】
上記の目的を達成するための本発明の足載せ部を備えた椅子は、支持脚の上面中央に立設される円筒状の軸受けと、上記円筒状の軸受けの上部に回転自在に嵌められる垂直支柱と、上記垂直支柱の上端に固定される座部；上記円筒状の軸受けの外周面の下端に回転自在に結合する回転筒；上記回転筒に固定端部が嵌合固定され、上記固定端部から一側に延長する弾性材質の支持部材；上記支持部材の自由端部に嵌められ、上記支持部材に沿って上下に摺動可能な足載せ部材；及び上記回転筒の上端に設置され、上記垂直支柱の回転をストップさせるストッパ部材；を含み、上記回転筒には、上記垂直支柱が嵌められる回転孔及び上記支持部材の上記固定端部が嵌められる固定孔が縦方向に貫通形成されている足載せ部を備えた椅子において、上記回転筒の外周面の一側には第１嵌合孔が形成され、上記第１嵌合孔は上記固定孔と上記回転孔に連通し、上記支持部材の上記固定端部が上記固定孔に嵌められ上記回転孔に上記垂直支柱が嵌められた状態で、上記第１嵌合孔に第１孔を有する第１固定ピン及び上記第１孔に挿入される第１ボルト部を有する第１固定ノブが挿入されることにより、上記支持部材が上記回転筒に固定結合されることを特徴とする。
【００１１】
上記支持部材は上記固定端部と上記自由端部との間に連結部、水平部及び案内部を備えており、上記連結部は上記固定端部の端から上方に一定長さだけ斜めに延長し、上記水平部は上記連結部の端から水平に一定長さだけ延長し、上記案内部は上記水平部の端から下方に一定長さだけ斜めに延長していることが望ましい。
【００１２】
上記足載せ部材は、上面及び下面にそれぞれ突出部が一体に対向設置され、上記突出部の長手方向に沿って案内孔が貫通形成され、上記案内孔と垂直に交差するよう一側に第２嵌合孔が貫通形成された足載せ部を備えており、上記足載せ部は、上記案内孔に上記支持部材の上記自由端部が嵌められた状態で、上記第２嵌合孔に第２孔を有する第２固定ピン及び上記第２孔に挿入される第２ボルト部を有する第２固定ノブが挿入されることにより、上記支持部材の上記案内部に沿って摺動可能に結合されることが望ましい。
【００１３】
上記ストッパ部材は、円筒状胴体の一側から一定の長さだけ突出形成された第１突出端を備え、上記第１突出端には第１ネジ孔が形成され、上記垂直支柱に嵌められて上記円筒状軸受けの上端に嵌合される固定キャップ；上記固定キャップが上記垂直支柱に嵌められた後、上記固定キャップを貫通して露出される上記垂直支柱に嵌合され、相互対向するように離隔形成された一対の端部を備え、上記端部とは反対の方向に突出形成された第２突出端を備え、上記第２突出端には第２ネジ孔が形成され、上記端部のうち第１端には第３嵌合孔が形成されるブラケット；一側先端に第３ボルト部が形成された第３固定ノブ；及び上記第３固定ノブの上記第３ボルト部が上記第３嵌合孔に挿入される時、上記ブラケットの上記第１端の外面に対して上記第３固定ノブを一定距離だけ離隔させるための離隔ピン；を備えており、上記垂直支柱に上記固定キャップと上記ブラケットとが順次結合した状態で、上記固定キャップの上記第１ネジ孔と上記ブラケットの上記第２ネジ孔には固定ネジが貫通し、上記ブラケットを貫通して突出した上記固定ネジの自由端部には固定ナットが螺合して上記固定キャップと上記ブラケットとが堅固に結合され、上記第３固定ノブの上記第３ボルト部に上記離隔ピンが嵌められた後、上記第３ボルト部は上記第３嵌合孔に挿入され、上記端部のうち第２端を貫通して露出された上記第３ボルト部には上記第２端の内側に配置された第３ナットが螺合し、上記第３固定ノブを回転させることにより上記第３ボルト部が上記第３ナットから出没して上記各端部間の離隔距離が調節され、これにより上記回転筒に対する上記垂直支柱の回転運動が制御されることが望ましい。
【００１４】
【発明の実施の形態】
以下、添付図面を参照しながら、本発明の構成をより詳しく説明する。
【００１５】
図１は本発明の実施例による足載せ部を備えた椅子を示した斜視図、図２はその側面図、図３は本発明の実施例における調節可能な足載せ部材を示した分解斜視図、図４は図３の足載せ部材の結合状態を示した側断面図、図５は図１のＡ−Ａ線に沿った断面図、図６は図１のＢ−Ｂ線に沿った断面図、図７は本発明の実施例によるストッパ部材の分解斜視図、図８は図７の結合状態で一部を切欠した側面図、図９は図７の結合状態で一部を切欠した平面図である。
【００１６】
図示のように、図面符号“２００”は本発明の実施例による椅子である。椅子２００は支持脚２０６の上面中央に立設される円筒状の軸受け２０１と、円筒状の軸受け２０１の上端に回転自在に嵌められる垂直支柱２０２と、垂直支柱２０２の上端に設置される座部２０４とからなる。
【００１７】
図１及び２を参照すれば、本発明の椅子２００には回転筒２１０、支持部材２２０及び足載せ部材が含まれる。
【００１８】
図３乃至図６を参照すれば、回転筒２１０は円筒状の軸受け２０１の外周面の下端に両方向への回転が可能に結合される。回転筒２１０は回転孔２１２及び固定孔２１２Ａを有する。回転孔２１２は円筒状の軸受け２０１の外周面に嵌められるように回転筒２１０の長手方向に形成される。固定孔２１２Ａは支持部材２２０の一端が嵌合固定されるように回転孔２１２と並列に隣接して形成される。回転筒２１０には外周面の一側から固定孔２１２Ａ及び回転孔２１２を順に貫通し先端に第１ナット２１４が嵌められた第１嵌合孔２１２Ｂが形成され、第１嵌合孔２１２Ｂには内部に第１孔２１６Ａが貫通する第１固定ピン２１６と、第１固定ピン２１６の第１孔２１６Ａに嵌められて第１ナット２１４に螺合するように先端に第１ボルト部２１８Ａを有する第１固定ノブ２１８をそれぞれ設置する。
【００１９】
支持部材２２０は回転筒２１０に一端が固定され、他端は支持脚２０６に向かって傾斜状に形成される。支持部材２２０は弾性材質からなる。支持部材２２０は固定部２２２、連結部２２４、水平部２２６、及び案内部２２８を含む。固定部２２２は回転筒２１０の固定孔２１２Ａに嵌められるように垂直支柱２０２と平行に形成される。連結部２２４は固定部２２２から傾斜状に上向きに延長する。水平部２２６は連結部２２４から延長して座部２０４の下部に近接して位置する。案内部２２８は水平部２２６から下向きに傾斜状に延長して足載せ部材の移動経路となる。支持部材２２０は、水平部２２６を基準として両側の固定部２２２と案内部２２８が支持脚２０６の方向に対して“逆Ｖ字”の形状となるように折曲形成される。案内部２２８の下端は地面と近接した位置に到達するようにする。
【００２０】
足載せ部材は支持部材２２０の他端に摺動自在に結合されて支持脚２０６と座部２０４との間で移動する。足載せ部材は、足載せ部２３０、第２固定ピン２３６、及び第２固定ノブ２３８を含む。足載せ部２３０にはその上面と下面に突出部２３２が一体に対向設置され、突出部２３２の長手方向に沿って案内孔２３２Ａが穿孔され、案内孔２３２Ａと交差するように一側に第２嵌合孔２３２Ｂが穿孔され、第２嵌合孔２３２Ｂの後端には第２ナット２３４が設置される。第２固定ピン２３６は案内孔２３２Ａに嵌められ支持部材２２０の案内部２２８を押圧固定し、その内部には第２孔２３６Ａが穿孔されている。第２固定ノブ２３８には、第２固定ピン２３６の第２孔２３６Ａを貫通し案内孔２３２Ａに嵌められて第２ナット２３４に螺合するように第２ボルト部２３８Ａが突出形成される。
【００２１】
図７乃至図９を参照すれば、ストッパ部材は固定キャップ２４０、ブラケット２５０、及び第３固定ノブ２６４を含む。固定キャップ２４０は垂直支柱２０２に嵌められて円筒状の軸受け２０１の上端と結合する。垂直支柱２０２にはブラケット２５０を嵌めて固定キャップ２４０と接触させる。
【００２２】
固定キャップ２４０は円筒状胴体の一側から一定の長さだけ突出形成された第１突出端２４１を有している。第１突出端には第１ネジ孔２４０Ａが形成されている。ブラケット２５０は、相互離隔して対向するように折曲形成されている一端部２５２及び他端部２５６、一端部２５２及び他端部２５６とは反対の方向に突出形成された第２突出端２５１とを有している。第２突出端２５１には、第２ネジ孔２５０Ａが形成されている。第１突出端２４１の第１ネジ孔２４１Ａと第２突出端２５１の第２ネジ孔２５１Ａとには、固定ネジ２４４を順に貫通させる。第１ネジ孔２４１Ａを貫通した固定ネジ２４４の先端は固定ナット２４２と螺合することで、ブラケット２５０が固定キャップ２４０に固定される。
【００２３】
ブラケット２５０の一端部２５２と他端部２５６とは相互離隔して対向するように折曲形成される。一端部２５２には第３ナット２５４がインサート射出されており、他端部２５６には第３嵌合孔２５８が穿孔されている。第３固定ノブ２６４はブラケット２５０の第３嵌合孔２５８に嵌められ、第３ナット２５４に先端の第３ボルト部２６６が螺合することで垂直支柱２０２の回転をストップさせる。第３ボルト部２６６には孔２６２の穿孔された離隔ピン２６０を嵌めることもできる。
【００２４】
以下、図１乃至図９を参照しながら本発明の足載せ部を備えた椅子の組立及び使用状態を説明する。
【００２５】
まず、図１乃至図３を参照して組立状態を説明すれば、次の通りである。
【００２６】
垂直支柱２０２には回転孔２１２を通して回転筒２１０が嵌められる。回転筒２１０の固定孔２１２Ａには支持部材２２０の固定部２２２が嵌められる。回転筒２１０の第１嵌合孔２１２Ｂには第１固定ピン２１６を嵌めてその先端を固定孔２１２Ａ内の固定部２２２に接触させる。次いで、第１固定ピン２１６の第１孔２１６Ａには第１固定ノブ２１８の第１ボルト部２１８Ａを貫通させる。第１ボルト部２１８Ａの先端は第１嵌合孔２１２Ｂの後方に埋設された第１ナット２１４に螺合させるが、上記螺合時において第１固定ノブ２１８の回転作業は第１固定ノブ２１８がそれ以上回転しないときまで続ける。この時、第１固定ピン２１６は支持部材２２０を堅固に押圧して離脱しないようにしている（図５参照）。
【００２７】
支持部材２２０には水平部２２６から折曲して延長する連結部２２４が形成される。水平部２２６は座部２０４の下面と接触しないようになっている。支持部材２２０の案内部２２８はその先端が地面に近接した位置まで折曲形成される。これは、足載せ部２３０に上方向からの荷重が加わった場合は、いつも案内部２２８を地面と当接状態とするためである。
【００２８】
支持部材２２０の案内部２２８には足載せ部材が嵌められてガイドされる。その具体的な説明は図３及び図４に示すように、足載せ部２３０の突出部２３２に形成された案内孔２３２Ａには支持部材２２０の案内部２２８が嵌められて摺動する。また、足載せ部２３０の第２嵌合孔２３２Ｂには第２固定ピン２３６を嵌め、その先端が支持部材２２０に接触し得るようにする。第２固定ピン２３６の第２孔２３６Ａには第２固定ノブ２３８の第２ボルト部２３８Ａを嵌める。第２ボルト部２３８Ａの先端は第２嵌合孔２３２Ｂに埋設された第２ナット２３４に螺合される。この過程で、第２固定ノブ２３８がそれ以上回転しないことは、第２固定ピン２３６が支持部材２２０の案内部２２８を押圧して固定させた状態となったことを意味する（図６参照）。
【００２９】
着座者は自分の体形に合うように足載せ部２３０の位置を調節することにより、使用状態を変更することができる。これのために、着座者は第２固定ノブ２３８を上記とは反対の方向に回転させて第２固定ピン２３６の押圧状態を緩めた後、支持部材２２０の案内部２２８における所望の位置に足載せ部２３０を移動させる。しかる後、第２固定ノブ２３８を一方向に回転させれば、第２固定ピン２３６が支持部材２２０の案内部２２８を押圧固定させる。
【００３０】
この状態で、着座者が椅子２００の座部２０４に着座して足載せ部２３０に自分の足を載置すれば、足載せ部２３０には着座者の足の荷重が伝達されて案内部２２８の下端が地面と当接する。即ち、支持部材２２０は着座者が足を足載せ部２３０に載置していない時には地面から離隔状態となり、着座者が足を足載せ部２３０に載置すれば地面と当接状態となる。
【００３１】
一方、足載せ部２３０を使用しない場合には、着座者は支持部材２２０を椅子の前方ではない他の方向に回転させればよい。この時、回転中心は回転筒２１０の嵌められた垂直支柱２０１となる。換言すれば、回転筒２１０は支持部材２２０の外周面に沿って回転するのである。
【００３２】
また、足載せ部２３０を使用しない場合には、支持部材２２０と足載せ部２３０を回転筒２１０から完全に分離することもできる。即ち、着座者は第１固定ノブ２１８を回転させることで、固定部２２２を押圧していた第１固定ピン２１６の押圧状態を解除した後、支持部材２２０の固定部２２２を回転筒２１０の固定孔２１２Ａから取り出して他の場所に保管すればよい。
【００３３】
他方、足載せ部２３０の高さ調節が完了した場合、着座者は第３固定ノブ２６４を回転させることにより、その先端の第３ボルト部２６６がブラケット２５０の他端２５８の第３嵌合孔２５８を貫通した後、一端部２５２にインサート射出された第３ナット２５４に螺合するようにする。この時、第３固定ノブ２６４を継続的に回転させると、ブラケット２５０が垂直支柱２０２の外周面に密着することになって、垂直支柱２０２が円筒状の軸受け２０１に対して回転しないように固定される。特に、第３ボルト部２６６には離隔ピン２６０を嵌めて第３固定ノブ２６４がブラケット２５０の他端部２５６と直接接触しないようにする。
【００３４】
【発明の効果】
以上説明したように、本発明の足載せ部を備えた椅子によれば、椅子に備えられた足載せ部の高さを簡単な操作により自由に調節することができる。
【００３５】
また、着座者が着座しているときには足載せ部の設置された支持部材の下端が常に地面に接触するため、着座中に椅子が倒れて事故を起こす恐れを最小限にすることができる。
【００３６】
また、ストッパ部材によって垂直支柱が円筒状軸受けに嵌合されたまま回転しないように固定して椅子の回転を抑制することで事故を予防することができる。
【００３７】
以上、本発明を具体的な実施例に基づいて説明したが、本発明はこれに限定されるものではなく、当業者の通常の知識の範囲内でその変形や改良が可能であるのは勿論である。
【図面の簡単な説明】
【図１】本発明の実施例による足載せ部を備えた椅子を示した斜視図である。
【図２】図１の椅子を示した側面図である。
【図３】本発明の実施例における調節可能な足載せ部材を示した分解斜視図である。
【図４】図３の足載せ部材の結合状態を示した側断面図である。
【図５】図１のＡ−Ａ線に沿った断面図である。
【図６】図１のＢ−Ｂ線に沿った断面図である
【図７】本発明の実施例によるストッパ部材の分解斜視図である。
【図８】図７の結合状態で一部を切欠した側面図である。
【図９】図７の結合状態で一部を切欠した平面図である。
【図１０】従来技術における足載せ部材の設置状態を示した斜視図である。
【符号の説明】
２００椅子
２０１軸受け
２０２垂直支柱
２０４座部
２０６支持脚
２１０回転筒
２１２回転孔
２１２Ａ固定孔
２１２Ｂ第１嵌合孔
２１４第１ナット
２１６第１固定ピン
２１６Ａ第１孔
２１８第１固定ノブ
２１８Ａ第１ボルト部
２２０支持部材
２２２固定部
２２４連結部
２２６水平部
２２８案内部
２３０足載せ部
２３２突出部
２３２Ａ案内孔
２３２Ｂ第２嵌合孔
２３４第２ナット
２３６第２固定ピン
２３６Ａ第２孔
２３８第２固定ノブ
２３８Ａ第２ボルト部
２４０固定キャップ
２４０Ａ第１ネジ孔
２４１第１突出端
２５０ブラケット
２５０Ａ第１ネジ孔
２５１第２突出端
２５２一端部
２５４第３ナット
２５６他端部
２５８第３嵌合孔
２６４第３固定ノブ
２６６第３ボルト部 [0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a chair, and more particularly, to a chair in which the height of a footrest can be freely adjusted to suit various body sizes of a seated person, and furthermore, it is possible to prevent the chair from falling down while sitting on the chair. The present invention relates to a chair provided with a footrest.
[0002]
[Prior art]
In general, chairs are made with uniform dimensions according to average body conditions, but a height adjustment device so that the height of the seat is adjusted according to the height of the desk or table used as a set. Some are equipped with
[0003]
According to such a height adjusting device, there is an advantage that the distance between the seat portion of the chair and the desk or the table can be adjusted to be constant, but on the other hand, the feet of the occupant cannot reach the floor surface, resulting in an unstable sitting posture. There was a case.
[0004]
As one invention to solve the above-mentioned problem, US Patent No. 5,011,227 (1991.4.30 .; granted to Hendrik R. van Hekken); Chair with a comfortable footrest ”). The outline of the invention will be described with reference to FIG.
[0005]
As shown in the figure, a chair 100 is formed by connecting a seat 104 to an upper end of a vertical support 102. A footrest member is installed below the seat 104. The foot rest includes a housing 110, a horizontal frame 112, a foot rest 114, and an operation handle 116. The housing 110 protrudes downward from the lower surface of the seat 104. The horizontal frame 112 is rotatably connected to the lower end of the housing 110 by a shaft. The footrest 114 is connected to the front end of the horizontal frame 112. The operation handle 116 is installed at the upper end of the housing 110 so as to adjust the height of the footrest 114. Inside the housing 110 the cylinder, a piston, a driving pin (not shown) is installed rotational angle of the horizontal frame 112 has a adjustable.
[0006]
Therefore, the occupant of the chair 100 can adjust the height of the footrest 114 so as to match his or her physical condition. However, in such a configuration, when the occupant pulls the operation handle 116 in the “A” or “B” direction, the horizontal frame 112 rotates about the joint portion at the lower end of the housing 110 to rotate the footrest 114. Since the position is changed upward or downward, users of various body shapes cannot be received in comfortable postures.
[0007]
Further, the conventional foot rest 114 is floating in the air without contacting the ground. Therefore, when the user places his / her foot on the footrest 114 while the load is concentrated on the footrest 114, the chair 100 and the occupant may fall down together and cause an accident. This is a more serious problem for short toddlers and children.
[0008]
Further, there is a problem in that a device for adjusting the height of the footrest 114 requires a number of components such as an operation handle, a piston, a cylinder, and a drive pin.
[0009]
[Problems to be solved by the invention]
The present invention has been made in view of the above-described problems, and an object of the present invention is to easily adjust the height of a footrest installed on a chair, and to adjust the height of the footrest. It is an object of the present invention to provide a chair provided with a footrest that prevents the chair from falling down even when a load is applied.
[0010]
[Means for Solving the Problems]
A chair provided with a footrest according to the present invention for achieving the above object has a cylindrical bearing erected at the center of the upper surface of a support leg, and a vertical bearing rotatably fitted on the upper part of the cylindrical bearing. supports and the seat portion is fixed to the upper end of the vertical column; rotary cylinder rotatably coupled to the lower end of the outer peripheral surface of the cylindrical bearing; fixed end to the rotating cylinder is fitted and fixed, the fixing part A support member of an elastic material extending to one side from the portion; a footrest member fitted to a free end of the support member and slidable up and down along the support member; and installed at an upper end of the rotary cylinder; A stopper member for stopping rotation of the vertical support; and a rotary hole in which the vertical support is fitted and a fixing hole in which the fixed end of the support member is fitted are formed in the rotary cylinder in a vertical direction. Chair with a footrest A first fitting hole is formed on one side of the outer peripheral surface of the rotary cylinder, the first fitting hole communicates with the fixing hole and the rotating hole, and the fixed end of the support member is fixed with the fixing hole. A first fixing pin having a first hole in the first fitting hole and a first bolt portion inserted into the first hole in a state where the vertical support is fitted in the rotating hole. The support member is fixedly connected to the rotary cylinder by inserting a fixing knob .
[0011]
The support member has a connecting portion, a horizontal portion, and a guide portion between the fixed end and the free end, and the connecting portion extends obliquely upward from the end of the fixed end by a predetermined length. Preferably, the horizontal portion extends horizontally from the end of the connecting portion by a certain length, and the guide portion extends obliquely downward from the end of the horizontal portion by a certain length .
[0012]
The footrest member has protrusions integrally and opposingly provided on an upper surface and a lower surface, and a guide hole is formed through the protrusion along a longitudinal direction of the protrusion, and a second side is formed on one side so as to intersect the guide hole vertically. A footrest portion having a fitting hole formed therethrough; the footrest portion having a second end in the second fitting hole with the free end of the support member being fitted in the guide hole; By inserting a second fixing pin having a hole and a second fixing knob having a second bolt portion inserted into the second hole, the supporting member is slidably coupled along the guide portion of the support member. It is desirable.
[0013]
The stopper member includes a first protruding end protruding from one side of the cylindrical body by a predetermined length, a first screw hole is formed in the first protruding end, and the first protruding end is fitted to the vertical support. A fixed cap fitted to the upper end of the cylindrical bearing; the fixed cap is fitted to the vertical support, and then fitted to the vertical support exposed through the fixed cap and opposed to each other. A pair of spaced apart ends, a second projected end protruding in a direction opposite to the end, and a second screw hole formed in the second projected end; A bracket having a third fitting hole formed at the first end; a third fixing knob having a third bolt formed at one end; and the third bolt having the third bolt being the third bolt. When inserted into the fitting hole, the outer surface of the first end of the bracket is A separating pin for separating the third fixing knob by a predetermined distance; and a state in which the fixing cap and the bracket are sequentially coupled to the vertical support, the first screw hole of the fixing cap and the A fixing screw penetrates through the second screw hole of the bracket, and a fixing nut is screwed into a free end of the fixing screw that protrudes through the bracket so that the fixing cap and the bracket are firmly connected. Then, after the separation pin is fitted to the third bolt portion of the third fixing knob, the third bolt portion is inserted into the third fitting hole, and penetrates a second end of the end portion. A third nut disposed inside the second end is screwed into the exposed third bolt portion, and by rotating the third fixing knob, the third bolt portion is disengaged from the third nut. Protruding and retracting between the above ends Distance is adjusted, thereby the rotational movement of the vertical column relative to the rotary cylinder is controlled desirably.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the configuration of the present invention will be described in more detail with reference to the accompanying drawings.
[0015]
FIG. 1 is a perspective view showing a chair provided with a footrest according to an embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is an exploded perspective view showing an adjustable footrest member in the embodiment of the present invention. 4, FIG. 4 is a side sectional view showing a connected state of the footrest member of FIG. 3, FIG. 5 is a sectional view taken along line AA of FIG. 1, and FIG. 6 is a section taken along line BB of FIG. 7 is an exploded perspective view of the stopper member according to the embodiment of the present invention, FIG. 8 is a side view partially cut away in the coupled state of FIG. 7, and FIG. 9 is a plan view partially cut away in the coupled state of FIG. FIG.
[0016]
As shown, reference numeral "200" indicates a chair according to an embodiment of the present invention. The chair 200 includes a cylindrical bearing 201 erected at the center of the upper surface of the support leg 206, a vertical support 202 rotatably fitted to the upper end of the cylindrical bearing 201, and a seat installed at the upper end of the vertical support 202. 204.
[0017]
Referring to FIGS. 1 and 2, a chair 200 of the present invention includes a rotating cylinder 210, a support member 220, and a footrest member.
[0018]
Referring to FIGS. 3 to 6, the rotary cylinder 210 is coupled to the lower end of the outer peripheral surface of the cylindrical bearing 201 so as to be rotatable in both directions. The rotating cylinder 210 has a rotating hole 212 and a fixing hole 212A. The rotating hole 212 is formed in the longitudinal direction of the rotating cylinder 210 so as to be fitted on the outer peripheral surface of the cylindrical bearing 201. The fixing hole 212A is formed adjacent to and in parallel with the rotating hole 212 so that one end of the support member 220 is fitted and fixed. A first fitting hole 212B is formed in the rotating cylinder 210 through the fixing hole 212A and the rotating hole 212 in order from one side of the outer peripheral surface, and a first nut 214 is fitted at a tip thereof. The first fitting hole 212B is formed in the first fitting hole 212B. A first fixing pin 216 having a first hole 216A penetrating therein, and a first fixing pin 216 having a first bolt portion 218A at a distal end so as to be fitted into the first hole 216A of the first fixing pin 216 and screwed into the first nut 214. 1 Fixing knobs 218 are installed.
[0019]
One end of the support member 220 is fixed to the rotary cylinder 210, and the other end is formed to be inclined toward the support leg 206. The support member 220 is made of an elastic material. The support member 220 includes a fixing part 222, a connecting part 224, a horizontal part 226, and a guide part 228. The fixing portion 222 is formed in parallel with the vertical support 202 so as to be fitted into the fixing hole 212A of the rotary cylinder 210. The connecting portion 224 extends upward from the fixing portion 222 in an inclined manner. The horizontal part 226 extends from the connecting part 224 and is located near the lower part of the seat part 204. The guide portion 228 extends downward from the horizontal portion 226 in an inclined manner, and serves as a movement path of the footrest member. The support member 220 is bent so that the fixing portion 222 and the guide portion 228 on both sides with respect to the horizontal portion 226 have a “reverse V shape” in the direction of the support leg 206. The lower end of the guide portion 228 reaches a position close to the ground.
[0020]
The foot rest is slidably coupled to the other end of the support member 220 and moves between the support leg 206 and the seat 204. The foot rest includes a foot rest 230, a second fixing pin 236, and a second fixing knob 238. Projections 232 are integrally installed on the upper surface and the lower surface of the foot rest 230 so as to face each other. A guide hole 232 </ b> A is formed along the longitudinal direction of the protrusion 232, and a second side is formed on one side so as to intersect the guide hole 232 </ b> A. The fitting hole 232B is drilled, and a second nut 234 is installed at the rear end of the second fitting hole 232B. The second fixing pin 236 is fitted in the guide hole 232A and presses and fixes the guide portion 228 of the support member 220, and a second hole 236A is bored therein. The second fixing knob 238 has a second bolt portion 238A protruding from the second fixing pin 236 so as to pass through the second hole 236A of the second fixing pin 236, fit into the guide hole 232A, and screw into the second nut 234.
[0021]
Referring to FIGS. 7 to 9, the stopper member includes a fixing cap 240, a bracket 250, and a third fixing knob 264. The fixing cap 240 is fitted to the vertical column 202 and is connected to the upper end of the cylindrical bearing 201. A bracket 250 is fitted on the vertical support 202 and is brought into contact with the fixing cap 240.
[0022]
The fixing cap 240 has a first projecting end 241 projecting from one side of the cylindrical body by a certain length. A first screw hole 240A is formed in the first protruding end. The bracket 250 includes one end portion 252 and the other end portion 256 that are bent and formed to be spaced apart from each other and a second protruding end 251 that is formed to project in a direction opposite to the one end portion 252 and the other end portion 256. And A second screw hole 250A is formed in the second protruding end 251. The fixing screw 244 is sequentially passed through the first screw hole 241A of the first protruding end 241 and the second screw hole 251A of the second protruding end 251. The tip of the fixing screw 244 penetrating the first screw hole 241A is screwed with the fixing nut 242, so that the bracket 250 is fixed to the fixing cap 240.
[0023]
One end 252 and the other end 256 of the bracket 250 are bent so as to be separated from each other and face each other. A third nut 254 is insert-injected into one end 252, and a third fitting hole 258 is drilled into the other end 256. The third fixing knob 264 is fitted into the third fitting hole 258 of the bracket 250, and the rotation of the vertical support column 202 is stopped by screwing the third bolt 266 at the tip into the third nut 254. The third bolt portion 266 may be fitted with a separation pin 260 having a hole 262 formed therein.
[0024]
Hereinafter, an assembly and use state of a chair provided with a footrest according to the present invention will be described with reference to FIGS. 1 to 9.
[0025]
First, the assembled state will be described with reference to FIGS. 1 to 3 as follows.
[0026]
A rotating cylinder 210 is fitted to the vertical support 202 through a rotating hole 212. The fixing portion 222 of the support member 220 is fitted into the fixing hole 212A of the rotary cylinder 210. A first fixing pin 216 is fitted into the first fitting hole 212B of the rotating cylinder 210, and the tip thereof is brought into contact with the fixing portion 222 in the fixing hole 212A. Next, the first bolt portion 218A of the first fixing knob 218 is passed through the first hole 216A of the first fixing pin 216. The tip of the first bolt portion 218A is screwed into the first nut 214 embedded behind the first fitting hole 212B. At the time of the screwing, the rotation of the first fixing knob 218 is performed by the first fixing knob 218. Continue until no more rotation. At this time, the first fixing pin 216 firmly presses the support member 220 so as not to be detached (see FIG. 5).
[0027]
A connecting portion 224 is formed on the support member 220 so as to be bent and extend from the horizontal portion 226. The horizontal part 226 does not contact the lower surface of the seat part 204 . The guide portion 228 of the support member 220 is bent to a position where its tip is close to the ground. This is because the guide portion 228 is always in contact with the ground when a load is applied to the footrest portion 230 from above.
[0028]
A footrest member is fitted into and guided by the guide portion 228 of the support member 220. Specifically, as shown in FIGS. 3 and 4, the guide portion 228 of the support member 220 is fitted into a guide hole 232 </ b> A formed in the projecting portion 232 of the footrest portion 230 and slides. A second fixing pin 236 is fitted in the second fitting hole 232 </ b> B of the foot rest 230 so that the tip can contact the support member 220. The second bolt portion 238A of the second fixing knob 238 is fitted into the second hole 236A of the second fixing pin 236. The tip of the second bolt portion 238A is screwed into a second nut 234 embedded in the second fitting hole 232B. In this process, the fact that the second fixing knob 238 does not rotate any more means that the second fixing pin 236 has pressed and fixed the guide portion 228 of the support member 220 (see FIG. 6). .
[0029]
The seated person can change the use state by adjusting the position of the footrest 230 so as to match his / her body shape. To this end, the occupant rotates the second fixing knob 238 in the opposite direction to release the pressing state of the second fixing pin 236, and then moves the foot to a desired position in the guide portion 228 of the support member 220. The placing unit 230 is moved. Thereafter, when the second fixing knob 238 is rotated in one direction, the second fixing pin 236 presses and fixes the guide portion 228 of the support member 220.
[0030]
In this state, if the occupant sits on the seat portion 204 of the chair 200 and places his / her foot on the footrest portion 230, the load of the occupant's foot is transmitted to the footrest portion 230, and the guide portion 228 is received. The bottom edge of the is in contact with the ground. That is, the support member 220 is separated from the ground when the occupant does not place his / her feet on the footrest 230, and comes into contact with the ground when the occupant places his / her feet on the footrest 230.
[0031]
On the other hand, when the foot rest 230 is not used, the occupant may rotate the support member 220 in a direction other than the front of the chair. At this time, the center of rotation is the vertical support 201 on which the rotary cylinder 210 is fitted. In other words, the rotary cylinder 210 rotates along the outer peripheral surface of the support member 220.
[0032]
When the foot rest 230 is not used, the support member 220 and the foot rest 230 can be completely separated from the rotary cylinder 210. That is, the occupant releases the pressing state of the first fixing pin 216 pressing the fixing portion 222 by rotating the first fixing knob 218, and then fixes the fixing portion 222 of the support member 220 to the rotating cylinder 210. It may be taken out from the hole 212A and stored in another place.
[0033]
On the other hand, when the height adjustment of the foot rest 230 is completed, the occupant rotates the third fixing knob 264 so that the third bolt portion 266 at the tip of the third fixing knob 264 is turned into the third fitting hole at the other end 258 of the bracket 250. After passing through 258, it is screwed into the third nut 254 inserted into the one end 252. At this time, if the third fixing knob 264 is continuously rotated, the bracket 250 comes into close contact with the outer peripheral surface of the vertical support 202, and the vertical support 202 is fixed so as not to rotate with respect to the cylindrical bearing 201. Is done. In particular, a separation pin 260 is fitted into the third bolt part 266 so that the third fixing knob 264 does not directly contact the other end 256 of the bracket 250.
[0034]
【The invention's effect】
As described above, according to the chair having the footrest of the present invention, the height of the footrest provided in the chair can be freely adjusted by a simple operation.
[0035]
Further, when the occupant is seated, the lower end of the support member provided with the foot rest is always in contact with the ground, so that the risk of an accident when the chair falls down while sitting can be minimized.
[0036]
In addition, the vertical strut is fixed by the stopper member so as not to rotate while being fitted to the cylindrical bearing, thereby suppressing the rotation of the chair, thereby preventing an accident.
[0037]
As described above, the present invention has been described based on the specific embodiments. However, the present invention is not limited thereto, and it is needless to say that modifications and improvements can be made within the ordinary knowledge of those skilled in the art. It is.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a chair provided with a footrest according to an embodiment of the present invention.
FIG. 2 is a side view showing the chair of FIG. 1;
FIG. 3 is an exploded perspective view illustrating an adjustable footrest according to an embodiment of the present invention.
FIG. 4 is a side sectional view showing a combined state of the foot rest member of FIG. 3;
FIG. 5 is a sectional view taken along line AA of FIG. 1;
FIG. 6 is a cross-sectional view taken along the line BB of FIG. 1; FIG. 7 is an exploded perspective view of a stopper member according to the embodiment of the present invention;
8 is a side view with a part cut away in the coupled state of FIG. 7;
FIG. 9 is a plan view partially cut away in the coupled state of FIG. 7;
FIG. 10 is a perspective view showing an installation state of a foot rest according to the related art.
[Explanation of symbols]
200 chairs
201 bearing 202 vertical support 204 seat 206 support leg 210 rotating cylinder 212 rotating hole 212A fixing hole 212B first fitting hole 214 first nut 216 first fixing pin 216A first hole 218 first fixing knob 218A first bolt portion 220 Supporting member 222 Fixed part 224 Connecting part 226 Horizontal part 228 Guide part 230 Foot rest part 232 Projecting part 232A Guide hole 232B Second fitting hole 234 Second nut 236 Second fixing pin 236A Second hole 238 Second fixing knob 238A 2 bolt part
240 fixing cap
240A first screw hole
241 first protruding end
250 bracket
250A first screw hole
251 second protruding end
252 one end
254 3rd nut
256 other end
258 Third fitting hole
264 3rd fixed knob
266 third bolt

Claims

A cylindrical bearing erected at the center of the upper surface of the support leg, a vertical column rotatably fitted on the cylindrical bearing, and a seat fixed to the upper end of the vertical column ;
Rotary cylinder rotatably coupled to the lower end of the outer peripheral surface of the cylindrical bearing;
An elastic supporting member having a fixed end fitted and fixed to the rotary cylinder and extending to one side from the fixed end;
Fitted to the free end of the support member, member mounted slidable legs up and down along the supporting member; wherein; and placed on the upper end of the rotating cylinder, a stopper member for stopping the rotation of the vertical column ,
A chair provided with a footrest in which the rotating cylinder has a rotating hole into which the vertical support is fitted and a fixing hole into which the fixed end of the support member is fitted in a vertical direction.
A first fitting hole is formed on one side of the outer peripheral surface of the rotary cylinder, the first fitting hole communicates with the fixing hole and the rotating hole, and the fixed end of the support member is fixed with the fixing hole. A first fixing pin having a first hole in the first fitting hole and a first bolt portion inserted into the first hole in a state where the vertical support is fitted in the rotating hole. A chair provided with a footrest , wherein the support member is fixedly connected to the rotary cylinder by inserting a fixing knob .

The support member has a connecting portion, a horizontal portion, and a guide portion between the fixed end and the free end, and the connecting portion extends obliquely upward from the end of the fixed end by a predetermined length. The horizontal portion extends horizontally from the end of the connecting portion by a certain length, and the guide portion extends obliquely downward from the end of the horizontal portion by a certain length. A chair comprising the footrest according to claim 1.

The footrest member has protrusions integrally and opposingly provided on an upper surface and a lower surface, and a guide hole is formed through the protrusion along a longitudinal direction of the protrusion, and a second side is formed on one side so as to intersect the guide hole vertically. A footrest portion having a fitting hole formed therethrough; the footrest portion having a second end in the second fitting hole with the free end of the support member being fitted in the guide hole; By inserting a second fixing pin having a hole and a second fixing knob having a second bolt portion inserted into the second hole, the supporting member is slidably coupled along the guide portion of the support member. A chair comprising the footrest according to claim 2 .

The stopper member is
A first protrusion protruding from one side of the cylindrical body by a predetermined length; a first screw hole formed in the first protrusion; and a cylindrical screw fitted to the vertical support. Fixed cap fitted to the upper end of
After the fixed cap is fitted to the vertical support, the fixed cap is fitted to the vertical support exposed through the fixed cap, and has a pair of end portions spaced apart so as to face each other. A second projecting end projecting in a direction opposite to the first direction, a second screw hole is formed in the second projecting end, and a third fitting hole is formed in a first end of the end. Bracket;
A third fixing knob having a third bolt formed at one end thereof; and
A distance for separating the third fixing knob from the outer surface of the first end of the bracket by a predetermined distance when the third bolt portion of the third fixing knob is inserted into the third fitting hole; Pin;
In a state where the fixing cap and the bracket are sequentially coupled to the vertical support, a fixing screw passes through the first screw hole of the fixing cap and the second screw hole of the bracket, and penetrates the bracket. A fixing nut is screwed into a free end of the protruding fixing screw, so that the fixing cap and the bracket are firmly connected to each other, and the separation pin is fitted to the third bolt portion of the third fixing knob. Thereafter, the third bolt portion is inserted into the third fitting hole, and the third bolt portion exposed through the second end of the end portion is disposed inside the second end. When the third nut is screwed in and the third fixing knob is rotated, the third bolt portion protrudes and retracts from the third nut to adjust the separation distance between the respective end portions. Rotational movement of the above vertical support Chair comprising a footrest according to claim 1, characterized in that but be controlled.