JP3658740B2

JP3658740B2 - Hanging seat type folding chair

Info

Publication number: JP3658740B2
Application number: JP17553096A
Authority: JP
Inventors: 弘美阪本
Original assignee: 有限会社阪本企画
Priority date: 1996-06-14
Filing date: 1996-06-14
Publication date: 2005-06-08
Anticipated expiration: 2016-06-14
Also published as: JPH10133A

Description

【０００１】
【発明の属する技術分野】
本発明は、吊り下げ式の着座シートを有しかつ折畳みが可能な吊りシート式折畳み椅子に関する。
【０００２】
【従来の技術】
従来、左右一対の門形部材のそれぞれに具備された前後方向に長い杆部の相互間に可撓性のシートを緊張状態で掛け渡した吊りシート式椅子があった。また、椅子の着座部や脚部、背もたれ部、アームレスト部などを折畳み可能とした折畳み椅子もあった。
【０００３】
【発明が解決しようとする課題】
しかしながら、従来の上記吊りシート式椅子は、腰掛けた姿勢が安定しにくくて長時間の使用に不向きであった。また、従来の上記折畳み椅子は、折り畳んだ状態での持ち運びに不便を感じるものであった。
【０００４】
本発明は以上の状況のもとでなされたものであり、構造が簡単で安価に製作することのできるものでありながら、使用者の姿勢が安定して長時間の使用によっても疲労感を生じにくく、しかも、袋に入れて持ち運ぶことが可能になる程度にコンパクトに折り畳むことのできる吊りシート式折畳み椅子を提供することを目的とする。
【０００５】
また、本発明は、使用者の身体の大きさに合わせて着座シートの高さを調節することができ、また、その着座シートの高さを調節することによって腰掛けることも正座することも可能になるだけでなく、いずれの方法で使用しても使用者の身体の重心が安定し、しかも使用者の足に加わる負担が少なくなる吊りシート式折畳み椅子を提供することを目的とする。
【０００６】
【課題を解決するための手段】
請求項１に係る発明の吊りシート式折畳み椅子は、前後方向に長い杆部とその杆部の前端部および後端部のそれぞれに一体に連設された前脚部および後脚部とを有しかつそれらの前脚部と後脚部との相互間距離よりも長い距離を隔てて対向設置される左右一対の門形部材と、これらの門形部材に具備された左右一対の上記前脚部の下端部相互間に亘って、両端部がそれぞれの前脚部に対して各別の左右一対の第１縦軸周りに相対回動自在に連結された前支持杆が横架され、一方の上記門形部材の後部に、その門形部材の上記杆部に沿う縦長姿勢とその門形部材から横方向に延びて左右一対の上記門形部材の相互間に横架される横長姿勢との間で第２縦軸周りに回動可能に背もたれ部材の一端部が取り付けられ、この背もたれ部材の他端部に、他方の上記門形部材の後部に設けられた取付具に対して着脱可能な取付部が設けられ、左右一対の上記門形部材のそれぞれの杆部の相互間に、可撓性を有する着座シートが垂れ下がり状態で吊り渡されている、というものである。
【０００７】
この吊りシート式折畳み椅子において、可撓性を有する着座シートが垂れ下がり状態で左右一対の上記門形部材のそれぞれの杆部の相互間に吊り渡されているので、使用者がその着座シートに腰掛けると、その着座シートが使用者の体重でその臀部から腰部に至る部分に沿うように変形する。このため、上記着座シートが使用者の臀部から腰部に至る部分に違和感なくフィットして使用者の体重が着座シートにより広い面積で受け止められ、しかも、使用者の姿勢が安定し、使用者の足に加わる負担も軽減される。
【０００８】
この吊りシート式折畳み椅子を折り畳むときは、上記背もたれ部材の上記取付部を上記取付具から離脱させた後、その背もたれ部材を第２縦軸周りに回動させて一方の上記門形部材の上記杆部に沿う縦長姿勢とすることと、一方の上記門形部材を上記前支持杆に対し一方の第１縦軸周りに回動させることと、他方の上記門形部材を他方の第１縦軸周りに回動させること、とを行うことによって、上記背もたれ部材を挟む両側に一方の門形部材と他方の門形部材とが重なり合うようにする。
【０００９】
請求項２に係る発明の吊りシート式折畳み椅子は、請求項１に記載のものにおいて、上記着座シートに、その着座シートの垂れ下がり幅を増減調節可能な伸縮機構が設けられている、というものである。
【００１０】
この吊りシート式折畳み椅子によれば、上記伸縮機構によって上記着座シートの垂れ下がり幅を増減することができる。そのため、使用者の身体の大きさに合わせて着座シートの高さを調節することができ、また、その着座シートの高さを調節することによって腰掛けることも正座することも可能になる。その上、上記着座シートが垂れ下がっているので、上述した請求項１の作用と同じ作用が、腰掛け状態での使用に際しても、正座状態での使用に際しても発揮される。
【００１１】
請求項３に係る発明の吊りシート式折畳み椅子は、請求項１または請求項２に記載のものにおいて、上記取付具が、上板部と、その上板部の後端部から垂設された後板部と、その後板部の下端部から前方へ向かって突設された下板部と、上記上板部の前端部および上記下板部の前端部の相互間に形成された開放口と、を有する前面開放のコ字形部材により構成されていると共に、そのコ字形部材の上板部と下板部とに同心状のピン挿通孔が開設されており、上記取付具に対し上記開放口を通して嵌脱可能な上記背もたれ部材の上記取付部に、上記取付具に嵌合したときに上記ピン挿通孔に同心配置されるピン挿通孔が開設され、上記取付具の上記ピン挿通孔とその取付具に嵌合された上記取付部の上記ピン挿通孔とに抜き差し可能な差込ピンを備える、というものである。
【００１２】
この吊りシート式折畳み椅子によれば、上記差込ピンを、上記コ字形部材でなる上記取付具のピン挿通孔とその取付具に嵌合された上記背もたれ部材の上記取付部のピン挿通孔とに差し込むという簡単な操作を行うだけで、上記取付具と上記取付部とが連結される。また、そのようにして差し込んだ上記差込ピンを引き抜くだけで上記取付具と上記取付部との連結が解除されて、折畳みが可能になる。
【００１３】
請求項４に係る発明の吊りシート式折畳み椅子は、請求項３に記載のものにおいて、上記差込ピンに、その差込ピンを上記取付具の上記ピン挿通孔とその取付具に嵌合された上記取付部の上記ピン挿通孔とに差し込んだときに、上記差込ピンの差込位置の左右両側に亘る範囲で上記取付具における上記後板部の後面に接触することにより、その差込ピンを中心とする上記取付具と上記背もたれ部材の上記取付部との相対回動を抑制する板片状の押え具が設けられている、というものである。
【００１４】
この吊りシート式折畳み椅子によれば、上述したように差込ピンを差し込んで上記取付具と上記取付部とを連結したときに、その差込ピンに設けられている上記押え具が、上記差込ピンの差込位置の左右両側に亘る範囲で上記取付具における上記後板部の後面に接触してその差込ピンを中心とする上記取付具と上記取付部との相対回動を抑制するので、折畳み可能であるにもかかわらず、使用状態が安定する。
【００１５】
【発明の実施の形態】
図１は本発明の実施の一形態を示す吊りシート式折畳み椅子Ａを組み立てた状態で示す正面上方から見た概略斜視図、図２はその使用状態での作用を説明するための正面から見た概略説明図、図３は着座シート５の伸縮機構を示す斜視図、図４は左側の門形部材１と背もたれ部材４との取付部分の一部破断正面図、図５は左側の前脚部１２と前支持杆３との取付部分の一部破断正面図、図６は右側の門形部材２側に設けられた取付具６と上記背もたれ部材４側の取付部４２と差込ピン７などを示す概略斜視図、図７は上記取付具６と上記取付部４２とを連結したときの一部破断正面図である。
【００１６】
図１のように、この吊りシート式折畳み椅子Ａは、左右一対の門形部材１，２と、前支持杆３と、背もたれ部材４と、着座シート５とを備えている。
【００１７】
左側の上記門形部材１は、前後方向に長い杆部１１と、その杆部１１の前端部および後端部のそれぞれに一体に連設された前脚部１２および後脚部１３とを有している。この門形部材１は２５ｍｍ程度の外周直径を有する所定長の金属製の丸パイプ材を門形に曲げて製作されており、上記杆部１１と前脚部１２との境界箇所や上記杆部１１と上記後脚部１３との境界箇所は湾曲している。また、この門形部材１を床上に起立させたときの床面から上記杆部１１の頂面に至る高さ寸法が３０〜３５ｃｍ程度になっている。さらに、この門形部材１の前脚部１２と後脚部１３の間の距離、すなわち奥行寸法は３５〜４５ｃｍ程度になっている。右側の門形部材２には、上記した左側の門形部材１と同じ形状および同じ寸法のものが用いられている。２１は杆部、２２は前脚部、２３は後脚部である。なお、左右の門形部材１，２において、その前脚部１２，２２や後脚部１３，２３を伸縮可能に構成することも可能である。
【００１８】
上記前支持杆３は帯板状の金属板で製作されている。この前支持杆３は、その両端部が上向きに折り曲げられてばね性を備える押え片３１，３２となされていると共に、それらの押え片３１，３２の直内側に短い金属製のパイプ材でなる支持突起３３，３４が上向きに溶接で接合されている。そして、図５に詳細に示したように、左側の上記支持突起３３には、上記した左側の門形部材１の前脚部１２の下端部が相対回転自在に外嵌合されてその門形部材１が垂直に起立した姿勢に保持されている。これに対し、右側の上記支持突起３４に、上記した右側の門形部材２の前脚部２２の下端部が相対回転自在に外嵌合されてその門形部材２が垂直に起立した姿勢に保持されている。ここで、上記した左右の支持突起３３，３４は、左右の上記門形部材１，２に具備された左右一対の上記前脚部１２，２２の下端部相互間に亘って上記のように横架された上記前支持杆３を、左右一対の上記前脚部１２，２２に対して各別に相対回動自在に連結する第１縦軸を構成している。
【００１９】
図１や図４に示したように、左側の上記門形部材１の後部であって、その後脚部１３の上端部付近に、根元部１５が横向きに折り曲げられたボルト１４の上記根元部１５が溶接で接合されていて、このボルト１４によって第２縦軸が構成さている。この第２縦軸としてのボルト１４に、角形鋼材（丸パイプでもよい）を所定長に切断することにより形成された上記背もたれ部材４の一端部に開設されたボルト挿通孔４１を嵌合することによって、上記背もたれ部材４の一端部がそのボルト１４に回動可能に取り付けられている。ここで、図４で判るように、上記ボルト１４は上記後脚部１３の右側に突き出る形でその後脚部１３に固定されているので、そのボルト１４に取り付けられている上記背もたれ部材４は、そのボルト１４の周りで左側の上記門形部材１における上記杆部１１に沿う縦長姿勢（図１０参照）と、その門形部材１から横方向に延び出る横長姿勢（図８参照）との間で回動可能である。また、上記ボルト１４には、袋ナット１６がねじ込まれて、上記ボルト挿通孔４１から上向きに突出した上記ボルト１４の端部を覆い隠していると共に、その袋ナット１６によって上記背もたれ部材４の一端部が上記ボルト１４から抜け出ることを防いでいる。
【００２０】
上記背もたれ部材４の他端部に取付部４２が設けられている。図６および図７のように、この取付部４２にはピン挿通孔４３が開設されている。これに対し、右側の上記門形部材２の後部であって、その後脚部２３の上端部付近に取付具６が溶接で接合されている。この取付具６は、上板部６１と、その上板部６１の後端部から垂設された後板部６２と、その後板部６２の下端部から前方へ向かって突設された下板部６３と、上記上板部６１の前端部および上記下板部６３の前端部の相互間に形成された開放口６４とを有する前面開放のコ字形部材により構成されており、そのコ字形部材の上記上板部６１と下板部６３とに同心状のピン挿通孔６５が開設されている。そして、この取付具６に対して、上記背もたれ部材４の上記取付部４２が上記開放口６４を通して嵌脱可能になっている。また、その取付具６に上記背もたれ部材４の上記取付部４２を嵌合させたときには、上記取付具６のピン挿通孔６５と上記取付部４２のピン挿通孔４３とが同心配置されるようになっている。
【００２１】
図６および図７において、７は差込ピンである。この差込ピン７は、上記取付具６の上記ピン挿通孔６５とその取付具６に嵌合された上記取付部４２の上記ピン挿通孔４３とに抜き差し可能である。また、この差込ピン７には押え具７５が設けられている。この押え具７５は、上記差込ピン７の上端部に溶接で接合された取付板部７６と、この取付板部７６の後端部に膨らみ部７７を介して垂設された押圧板部７８とを備えている。そして、図７のようにその差込ピン７を上記取付具６の上記ピン挿通孔６５とその取付具６に嵌合された上記取付部４２の上記ピン挿通孔４３とに差し込んだときには、同図に破線で示したように、上記差込ピン７の差込位置の左右両側に亘る範囲で上記押圧板部７８が上記取付具６における上記後板部６２の後面に弾接して上記差込ピン７と上記押圧板部７８とにより上記取付具６を挾圧するようになっている。このため、その差込ピン７を中心とする上記取付具６と上記背もたれ部材４の上記取付部４２との相対回動が上記押え具７５によって抑制される。
【００２２】
上記背もたれ部材４を上記した横長姿勢にしてその取付部４２を上記差込ピン７を介して上記取付具６に連結したときには、その背もたれ部材４が水平に左右一対の門形部材１，２における後脚部１３，２３の相互間に横架される。また、上記前支持杆３に左右一対の上記支持突起３３，３４を介して取り付けられている左右一対の上記門形部材１，２は、互いに平行で、しかもその前支持杆３や上記背もたれ部材４に対し直角をなす前後方向に配備される。また、左右一対の門形部材１，２は、それらの前脚部１２，２２と後脚部１３，２３との相互間距離よりも長い距離を隔てて対向設置される。
【００２３】
また、図１に示したように、左右一対の上記門形部材１，２における杆部１１，２１には、筒状の布製カバー１８，２８が装着されており、また、上記前支持杆３や上記背もたれ部材４にも布製カバー３８，４８が装着されている。上記杆部１１，２１は使用者が肘をおいてアームレストとして用いることが可能であり、そのため、その杆部１１，２１にカバー１８，２８を装着しておくことは有益である。また、上記背もたれ部材４は、上方に向けて立ち上がる背もたれ板を装着するように構成することも可能である。
【００２４】
図１や図２のように左右一対の上記門形部材１，２のそれぞれの杆部１１，２１の相互間に、可撓性を有する上記着座シート５が垂れ下がり状態で吊り渡されている。この着座シート５は、腰掛けたり正座したりするときに使用者の臀部を支える矩形の着座布５１と、この着座布５１の前後両端縁部を横切って配設された前後一対の布帯５２と、これらの布帯５２の左右の端部のそれぞれに装着された合計４個のクランプ５３とを備えている。
【００２５】
図３に示したように、上記クランプ５３は、矩形枠５４と横桟５５とその横桟５５の両側の開口５６，５６とを有するものであって、上記布帯５２を図３のように上記横桟５５を跨いでその両側の上記開口５６，５６に通しておくと、そのクランプ５３と布帯５２とが反対向きに引っ張られたときには両者が滑らないようにその相対位置が定位置に保たれ、上記布帯５２を上記開口５６，５６から引き出して弛ませた後、その布帯５２を片側の開口５６を通して引き込んで緊張させるということを行うと、上記布帯５２とクランプ５３との相対位置が変化するという機能を有している。したがって、図３のように、上記布帯５２を、左側の門形部材１の上記杆部１１に装着されているカバー１８の位置決め布１９とそのカバー１８との隙間を通してそのカバー１８に巻き掛けると共に、図示のように２枚重ねにして上記クランプ５３に通しておくと、着座シート５が左側の上記杆部１１から垂れ下がり状態に吊り下げられる。したがって、図１のように左右一対の上記門形部材１，２のそれぞれの杆部１１，２１に、前後一対の上記布帯５２，５２の両端部のそれぞれを合計４個の上記クランプ５３を用いて吊り下げると、上記したように、上記着座シート５が垂れ下がり状態で左右一対の門形部材１，２の杆部１１，２１に吊り渡される。このときの着座シート５の垂れ下がり幅は、それぞれの上記クランプ５３とそれらのクランプ５３に通されている布帯５２との相対位置を調節することによって増減調節可能である。したがって、上記クランプ５３は上記着座シート５の垂れ下がり幅を増減調節するための伸縮機構を構成している。
【００２６】
以上説明した吊りシート式折畳み椅子Ａにおいては、可撓性を有する着座シート５が垂れ下がり状態で左右一対の上記門形部材１，２のそれぞれの杆部１１，２１の相互間に吊り渡されているので、図２のように使用者Ｍがその着座シート５に腰掛けると、その着座シート５が使用者Ｍの体重でその臀部から腰部に至る部分に沿うように変形する。このため、上記着座シート５が使用者の臀部から腰部に至る部分に図示のように違和感なくフィットして使用者Ｍの体重が着座シート５により広い面積で受け止められる。また、使用者Ｍの姿勢が安定し、使用者Ｍの足に加わる負担も軽減される。
【００２７】
この吊りシート式折畳み椅子Ａは、上記クランプ５３と上記布帯５２とを操作することによって、上記着座シート５の垂れ下がり幅を増減することができる。そのため、使用者Ｍの身体の大きさに合わせて着座シート５の高さを調節することができ、また、その着座シート５の高さを調節することによって腰掛けることも正座することも可能になる。図２には、正座したときの使用者Ｍの左右の足の位置を符号Ｌで示してある。これから類推できるように、正座するときには、上記着座シート５の高さを低めにし、その着座シート５に腰を下ろすと共に、左右の足Ｌ，Ｌをその着座シート５と床面との間に入れるようにする。
【００２８】
図８〜図１１は上記吊りシート式折畳み椅子Ａを折り畳む手順の一例を示している。図８は上記吊りシート式折畳み椅子Ａが組み立てられている状態を平面的に示している。上記吊りシート式折畳み椅子Ａの折畳みは、図８の状態から、上記差込ピン７を引き抜いて上記背もたれ部材４の上記取付部４２を上記取付具６から離脱させた後、その背もたれ部材４を上記着座シート５の下にくぐらせながら、図９の矢符Ｒ１のように上記第２縦軸を形成している上記ボルト１４の周りに回動させて左側の上記門形部材１の上記杆部１１に沿う縦長姿勢にする。次に、図１０の矢符Ｒ２のように、右側の門形部材２を右側の第１縦軸を形成している右側の支持突起３４の周りで回動させ、続いて、左側の上記門形部材１を上記背もたれ部材４と共に左側の第１縦軸を形成している左側の支持突起３３の周りで図１１の矢符Ｒ３のように回動させることにより、同図のように、上記前支持杆３の上で上記背もたれ部材４を挟む両側に左側の上記門形部材１と右側の上記門形部材２とが重なり合うようにする。こうして折り畳まれた上記吊りシート式折畳み椅子Ａは、図示していない袋に入れて持ち運ぶことが可能である。
【００２９】
折り畳まれた上記吊りシート式折畳み椅子Ａを展開して組み立てるときには、上記した折畳み手順の逆の手順を行えばよい。
【００３０】
以上説明した実施形態においては、左右一対の門形部材１，２が金属製の丸パイプ材で作られているので、強度的に優れたものである。これらの門形部材１，２を樹脂パイプで作っておけば、軽量化を達成しやすい。また、本発明において、上記伸縮機構は、上述したクランプ５３に限定されることはなく、他の種類のもの、たとえばバックルなどを採用することも可能である。
【００３１】
【発明の効果】
本発明に係る吊りシート式折畳み椅子によると、腰掛け状態であっても正座状態であっても、使用者の腰部や足に加わる負担が少なくなり、また、使用者の姿勢が安定し、長時間使用による疲労感をそれほど感じなくなる。また、折り畳んだときには、背もたれ部を挟む両側に一方の門形部材と他方の門形部材とが重なり合うようになるので、袋に入れて楽に持ち運ぶことのできるコンパクト形になる。また、使用者の身体の大きさに合わせて着座シートの高さを調節することができるので、上記したような長時間使用による疲労感を感じなくなるという効果が助長される。さらに、使用に際しての上記背もたれ部材の取付部と上記取付具との連結や、折畳みに際してのその連結の解除を、上記差込ピンの抜き差しだけで迅速かつ容易に行うことができるようになる。また、使用時には、上記差込ピンに設けられている押え具の作用によって、ぐらつきが防止されて使用状態が安定するという効果がある。
【００３２】
このような効果、すなわち、長時間座ったときの足や腰への負担を軽減することができるという効果を奏するこの発明の吊りシート式折畳み椅子は、屋内においてはテレビや読書、囲碁、将棋、マージャン、テレビゲームなどの各種の室内ゲームや、編物、書道、お客様との対話、食事、宴会、仏間での読経や寺院や集会所での食事や会合など、老人や足腰の具合の悪い人のみならず、若い人や健常者にも有益に使用でき、かつまた、袋入りとして携帯することのできるものであるからスポーツ観戦や屋外での会合・宴会、キャンプ、釣り等々、アウトドア用品としても使用でき、各種広範囲な用途が考えられる。
【図面の簡単な説明】
【図１】本発明の実施の一形態を示す吊りシート式折畳み椅子を組み立てた状態で示す正面上方から見た概略斜視図である。
【図２】上記吊りシート式折畳み椅子についての使用状態での作用を説明するための正面から見た概略説明図である。
【図３】着座シートの伸縮機構を示す斜視図である。
【図４】左側の門形部材と背もたれ部材との取付部分の一部破断正面図である。
【図５】左側の前脚部と前支持杆との取付部分の一部破断正面図である。
【図６】右側の門形部材側に設けられた取付具と背もたれ部材側の取付部と差込ピンなどを示す概略斜視図である。
【図７】上記取付具と上記取付部とを連結したときの一部破断正面図である。
【図８】上記吊りシート式折畳み椅子が組み立てられている状態を平面的に示した説明図である。
【図９】背もたれ部材を折り畳んだ状態を平面的に示した説明図である。
【図１０】右側の門形部材を折り畳んだ状態を平面的に示した説明図である。
【図１１】上記吊りシート式折畳み椅子を完全に折り畳んだ状態を平面的に示した説明図である。
【符号の説明】
Ａ吊りシート式折畳み椅子
１，２門形部材
３前支持杆
４背もたれ部材
５着座シート
６取付具
７差込ピン
１１，２１杆部
１２，２２前脚部
１３，２３後脚部
１４ボルト（第２縦軸）
３３，３４支持突起（第１縦軸）
４２取付部
４３ピン挿通孔
５３クランプ（伸縮機構）
６１上板部
６２後板部
６３下板部
６４開放口
６５ピン挿通孔
７５押え具[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hanging seat type folding chair having a hanging type seating seat and capable of folding.
[0002]
[Prior art]
Conventionally, there has been a hanging seat type chair in which a flexible seat is stretched between a pair of left and right ridges provided in each of a pair of left and right portal members in a tension state. In addition, there are folding chairs that can fold the seats, legs, backrests, armrests, etc. of the chairs.
[0003]
[Problems to be solved by the invention]
However, the conventional hanging seat type chair is not suitable for long-time use because the sitting posture is difficult to stabilize. The conventional folding chair is inconvenient to carry in the folded state.
[0004]
The present invention has been made under the above circumstances, and the structure of the present invention is simple and can be manufactured at a low cost. It is an object of the present invention to provide a folding seat type folding chair that is difficult and yet can be folded compactly enough to be carried in a bag.
[0005]
Further, the present invention can adjust the height of the seating seat according to the size of the user's body, and can also sit down or sit down by adjusting the height of the seating seat. It is an object of the present invention to provide a hanging seat type folding chair that stabilizes the center of gravity of the user's body and reduces the burden on the user's feet, regardless of which method is used.
[0006]
[Means for Solving the Problems]
The hanging seat type folding chair according to the first aspect of the present invention has a saddle portion that is long in the front-rear direction and a front leg portion and a rear leg portion that are integrally connected to the front end portion and the rear end portion of the saddle portion. And a pair of left and right gate-shaped members opposed to each other with a distance longer than the distance between the front leg portion and the rear leg portion, and the lower ends of the pair of left and right front leg portions provided in these portal-shaped members. Between the two parts, a front support rod whose both ends are connected to the respective front leg portions so as to be rotatable relative to each other around a pair of left and right first longitudinal axes is horizontally mounted. At the rear of the member, between the vertically long posture along the collar portion of the gate-shaped member and the horizontally long posture extending laterally from the gate-shaped member and horizontally mounted between the pair of left and right portal members. 2 One end of the backrest member is attached so as to be rotatable around the vertical axis, and the other end of the backrest member is An attachment part that can be attached to and detached from the fixture provided at the rear part of the portal member is provided, and a flexible seating seat is provided between the flanges of the pair of left and right portal members. Is suspended in a suspended state.
[0007]
In this hanging seat type folding chair, the flexible seating seat is suspended between the respective collars of the pair of left and right portal members in a suspended state, so that the user sits on the seating seat Then, the seating seat is deformed so as to follow the part from the buttocks to the waist with the weight of the user. For this reason, the seating seat fits comfortably in the part from the user's buttocks to the waist, and the user's weight is received by the seating seat in a wide area, and the user's posture is stable, and the user's feet The burden on the company will be reduced.
[0008]
When the folding seat type folding chair is folded, the mounting portion of the backrest member is detached from the mounting tool, and then the backrest member is rotated around the second vertical axis to A vertically long posture along the collar, turning one of the gate-shaped members around the first vertical axis with respect to the front support rod, and setting the other portal-shaped member to the other first vertical By rotating around the axis, one portal member and the other portal member overlap each other on both sides of the backrest member.
[0009]
A hanging seat type folding chair according to a second aspect of the present invention is the one according to the first aspect, wherein the seating seat is provided with an expansion / contraction mechanism capable of increasing / decreasing a hanging width of the seating seat. is there.
[0010]
According to this hanging seat type folding chair, the hanging width of the seating seat can be increased or decreased by the telescopic mechanism. Therefore, the height of the seating seat can be adjusted in accordance with the size of the user's body, and it is possible to sit down or sit down by adjusting the height of the seating seat. In addition, since the seating seat hangs down, the same action as that of the first aspect described above is exhibited both when used in the sitting state and when used in the sitting position.
[0011]
A hanging seat type folding chair according to a third aspect of the present invention is the hanging seat type folding chair according to the first or second aspect, wherein the fixture is suspended from an upper plate portion and a rear end portion of the upper plate portion. A rear plate portion, a lower plate portion projecting forward from the lower end portion of the rear plate portion, and an opening formed between the front end portion of the upper plate portion and the front end portion of the lower plate portion , And a concentric pin insertion hole is formed in the upper plate portion and the lower plate portion of the U-shaped member. A pin insertion hole that is concentrically arranged in the pin insertion hole when the fitting is fitted to the fixture is provided in the attachment portion of the back member that can be fitted and removed through the pin insertion hole and the attachment of the fixture. An insertion pin that can be inserted into and removed from the pin insertion hole of the mounting portion fitted to the fixture. Provided, is that.
[0012]
According to the hanging seat type folding chair, the insertion pin includes a pin insertion hole of the fixture made of the U-shaped member and a pin insertion hole of the attachment portion of the backrest member fitted to the fixture. The attachment tool and the attachment part are connected to each other by simply performing a simple operation of inserting into the attachment. Further, by simply pulling out the insertion pin inserted in such a manner, the connection between the mounting tool and the mounting portion is released, and folding becomes possible.
[0013]
According to a fourth aspect of the present invention, there is provided the hanging seat type folding chair according to the third aspect, wherein the insertion pin is fitted to the pin insertion hole of the fixture and the fixture. Further, when inserted into the pin insertion hole of the mounting portion, the plug is inserted by contacting the rear surface of the rear plate portion of the mounting tool in a range extending to the left and right sides of the insertion position of the insertion pin. A plate-like presser that suppresses relative rotation between the mounting tool centered on the pin and the mounting portion of the backrest member is provided.
[0014]
According to this hanging seat type folding chair, when the insertion pin is inserted and the attachment and the attachment portion are connected as described above, the presser provided on the insertion pin is In the range over the left and right sides of the insertion position of the insertion pin, it contacts the rear surface of the rear plate portion of the attachment tool, and suppresses relative rotation between the attachment tool and the attachment portion around the insertion pin. Therefore, the use state is stabilized despite being foldable.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a schematic perspective view seen from the front upper side in a state in which a hanging sheet type folding chair A showing an embodiment of the present invention is assembled, and FIG. 2 is a front view for explaining the operation in the use state. FIG. 3 is a perspective view showing a telescopic mechanism of the seating seat 5, FIG. 4 is a partially cutaway front view of a mounting portion between the left portal member 1 and the backrest member 4, and FIG. 5 is a left front leg portion. 6 is a partially broken front view of the attachment portion between the front support rod 3 and the front support rod 3, FIG. 6 shows the attachment 6 provided on the right portal member 2 side, the attachment portion 42 on the backrest member 4 side, the insertion pin 7, etc. FIG. 7 is a partially cutaway front view when the fixture 6 and the attachment portion 42 are connected.
[0016]
As shown in FIG. 1, the hanging seat type folding chair A includes a pair of left and right gate-shaped members 1, 2, a front support rod 3, a backrest member 4, and a seating seat 5.
[0017]
The portal member 1 on the left side has a flange portion 11 that is long in the front-rear direction, and a front leg portion 12 and a rear leg portion 13 that are integrally connected to each of the front end portion and the rear end portion of the flange portion 11. ing. The portal-shaped member 1 is manufactured by bending a metal round pipe member having a predetermined length having an outer diameter of about 25 mm into a portal shape, and a boundary portion between the flange portion 11 and the front leg portion 12 or the flange portion 11. And a boundary portion between the rear leg portion 13 and the rear leg portion 13 are curved. Moreover, the height dimension from the floor surface when this portal-shaped member 1 is made to stand on the floor to the top surface of the said collar part 11 is about 30-35 cm. Furthermore, the distance between the front leg portion 12 and the rear leg portion 13 of the portal member 1, that is, the depth dimension is about 35 to 45 cm. The right portal member 2 has the same shape and the same dimensions as the left portal member 1 described above. 21 is a buttocks, 22 is a front leg, and 23 is a rear leg. In the left and right portal-shaped members 1 and 2, the front leg portions 12 and 22 and the rear leg portions 13 and 23 can be configured to be extendable.
[0018]
The front support rod 3 is made of a strip-shaped metal plate. The front support rod 3 is formed with presser pieces 31 and 32 having both ends bent upward and having spring properties, and is made of a short metal pipe material directly inside the presser pieces 31 and 32. The support protrusions 33 and 34 are joined upward by welding. As shown in detail in FIG. 5, the lower end portion of the front leg portion 12 of the left portal member 1 is externally fitted to the left support projection 33 so as to be relatively rotatable, and the portal member. 1 is held in a vertically upright posture. On the other hand, the lower end of the front leg portion 22 of the right portal member 2 is fitted to the right support protrusion 34 so as to be relatively rotatable, and the portal member 2 is held in a vertically upright posture. Has been. Here, the left and right support protrusions 33 and 34 are horizontally mounted between the lower ends of the pair of left and right front leg portions 12 and 22 provided on the left and right portal-shaped members 1 and 2 as described above. The front support rod 3 is configured as a first vertical axis that is connected to the pair of left and right front leg portions 12 and 22 so as to be rotatable relative to each other.
[0019]
As shown in FIG. 1 and FIG. 4, the root portion 15 of the bolt 14 is a rear portion of the left portal member 1, and the root portion 15 is bent sideways in the vicinity of the upper end portion of the rear leg portion 13. Are joined by welding, and the second vertical axis is constituted by the bolt 14. A bolt insertion hole 41 provided at one end of the backrest member 4 formed by cutting a square steel material (or a round pipe) into a predetermined length is fitted to the bolt 14 as the second vertical axis. Thus, one end of the backrest member 4 is rotatably attached to the bolt 14. Here, as can be seen in FIG. 4, the bolt 14 is fixed to the rear leg portion 13 so as to protrude to the right side of the rear leg portion 13, so that the backrest member 4 attached to the bolt 14 is Around the bolt 14 between the vertically long posture (see FIG. 10) along the flange 11 of the left portal member 1 and the horizontally long posture (see FIG. 8) extending laterally from the portal member 1 Can be rotated. Further, a cap nut 16 is screwed into the bolt 14 so as to cover and conceal the end of the bolt 14 protruding upward from the bolt insertion hole 41, and one end of the backrest member 4 is covered by the cap nut 16. This prevents the part from coming out of the bolt 14.
[0020]
A mounting portion 42 is provided at the other end of the backrest member 4. As shown in FIGS. 6 and 7, a pin insertion hole 43 is formed in the attachment portion 42. On the other hand, the fixture 6 is joined by welding to the rear part of the right portal member 2 and in the vicinity of the upper end part of the rear leg part 23. The fixture 6 includes an upper plate portion 61, a rear plate portion 62 that is suspended from the rear end portion of the upper plate portion 61, and a lower plate that protrudes forward from the lower end portion of the rear plate portion 62. A U-shaped member having an open front surface having a portion 63 and an opening 64 formed between the front end portion of the upper plate portion 61 and the front end portion of the lower plate portion 63. A concentric pin insertion hole 65 is formed in the upper plate portion 61 and the lower plate portion 63. The attachment portion 42 of the backrest member 4 can be fitted into and removed from the attachment 6 through the opening 64. Further, when the mounting portion 42 of the backrest member 4 is fitted to the mounting tool 6, the pin insertion hole 65 of the mounting tool 6 and the pin insertion hole 43 of the mounting portion 42 are arranged concentrically. It has become.
[0021]
6 and 7, reference numeral 7 denotes an insertion pin. The insertion pin 7 can be inserted into and removed from the pin insertion hole 65 of the attachment 6 and the pin insertion hole 43 of the attachment portion 42 fitted to the attachment 6. The insertion pin 7 is provided with a presser 75. The presser 75 includes a mounting plate 76 that is joined to the upper end of the insertion pin 7 by welding, and a pressing plate 78 that is suspended from the rear end of the mounting plate 76 via a bulge 77. And. When the insertion pin 7 is inserted into the pin insertion hole 65 of the attachment 6 and the pin insertion hole 43 of the attachment portion 42 fitted to the attachment 6 as shown in FIG. As indicated by broken lines in the figure, the pressing plate portion 78 is elastically brought into contact with the rear surface of the rear plate portion 62 in the fixture 6 in the range extending from the left and right sides of the insertion position of the insertion pin 7. The fixture 6 is crushed by the pin 7 and the pressing plate portion 78. For this reason, relative rotation between the attachment 6 and the attachment portion 42 of the backrest member 4 around the insertion pin 7 is suppressed by the presser 75.
[0022]
When the backrest member 4 is set to the above-described landscape orientation and the mounting portion 42 is connected to the mounting tool 6 via the insertion pin 7, the backrest member 4 is horizontally connected to the pair of left and right portal members 1,2. It is placed between the rear legs 13 and 23. The pair of left and right gate-shaped members 1 and 2 attached to the front support rod 3 via a pair of left and right support protrusions 33 and 34 are parallel to each other, and the front support rod 3 and the backrest member. 4 is arranged in the front-rear direction perpendicular to 4. Further, the pair of left and right portal-shaped members 1 and 2 are opposed to each other with a distance longer than the distance between the front leg portions 12 and 22 and the rear leg portions 13 and 23.
[0023]
As shown in FIG. 1, cylindrical cloth covers 18 and 28 are attached to the flange portions 11 and 21 of the pair of left and right portal members 1 and 2, and the front support rod 3 Further, cloth covers 38 and 48 are also attached to the backrest member 4. The user can use the collars 11 and 21 as armrests with the elbows placed on the elbows. Therefore, it is beneficial to attach the covers 18 and 28 to the collars 11 and 21. The backrest member 4 may be configured to be mounted with a backrest plate that rises upward.
[0024]
As shown in FIGS. 1 and 2, the seating sheet 5 having flexibility is suspended in a suspended state between the flange portions 11 and 21 of the pair of left and right portal members 1 and 2. The seating sheet 5 includes a rectangular seating cloth 51 that supports a user's buttocks when sitting or sitting down, and a pair of front and rear cloth bands 52 disposed across both front and rear edges of the seating cloth 51. , And a total of four clamps 53 attached to the left and right end portions of the cloth band 52, respectively.
[0025]
As shown in FIG. 3, the clamp 53 has a rectangular frame 54, a horizontal beam 55, and openings 56, 56 on both sides of the horizontal beam 55, and the cloth band 52 is formed as shown in FIG. If the clamps 53 and the fabric band 52 are pulled in opposite directions, the relative position is fixed in place so that the two do not slip when the clamp 53 and the fabric band 52 are pulled in opposite directions. The fabric band 52 is pulled out from the openings 56 and 56 to be loosened, and then the fabric band 52 is pulled through the opening 56 on one side to be tensioned. The relative position changes. Accordingly, as shown in FIG. 3, the cloth band 52 is wound around the cover 18 through a gap between the positioning cloth 19 of the cover 18 attached to the collar portion 11 of the left portal member 1 and the cover 18. At the same time, when the two sheets are stacked and passed through the clamp 53 as shown in the figure, the seating sheet 5 is suspended from the left flange 11. Therefore, as shown in FIG. 1, a total of four clamps 53 are attached to the flanges 11, 21 of the pair of left and right portal members 1, 2 at both ends of the pair of front and rear fabric bands 52, 52. When used and suspended, as described above, the seating sheet 5 is suspended from the flanges 11 and 21 of the pair of left and right portal members 1 and 2 in a suspended state. The hanging width of the seating seat 5 at this time can be increased or decreased by adjusting the relative positions of the clamps 53 and the cloth bands 52 passed through the clamps 53. Therefore, the clamp 53 constitutes an expansion / contraction mechanism for increasing / decreasing the hanging width of the seating seat 5.
[0026]
In the hanging seat type folding chair A described above, the flexible seating seat 5 is suspended between the flange portions 11 and 21 of the pair of left and right gate-shaped members 1 and 2 in a suspended state. Therefore, when the user M sits on the seating sheet 5 as shown in FIG. 2, the seating sheet 5 is deformed so as to follow the part from the buttocks to the waist with the weight of the user M. For this reason, the seating seat 5 fits into the portion from the user's buttocks to the waist as shown in the figure, and the weight of the user M is received by the seating seat 5 in a wide area. Further, the posture of the user M is stabilized, and the burden on the user M's feet is reduced.
[0027]
The suspension seat type folding chair A can increase or decrease the hanging width of the seating seat 5 by operating the clamp 53 and the cloth band 52. Therefore, the height of the seating seat 5 can be adjusted in accordance with the size of the body of the user M, and it is also possible to sit down or sit down by adjusting the height of the seating seat 5. . In FIG. 2, the position of the left and right feet of the user M when sitting upright is indicated by a symbol L. As can be inferred from this, when sitting upright, the seating seat 5 is lowered in height, the seating seat 5 is seated, and the left and right feet L, L are placed between the seating seat 5 and the floor surface. Like that.
[0028]
FIGS. 8-11 has shown an example of the procedure which folds the said hanging sheet type folding chair A. FIG. FIG. 8 is a plan view showing a state in which the hanging seat type folding chair A is assembled. The folding of the hanging seat type folding chair A is performed by pulling out the insertion pin 7 from the state shown in FIG. 8 and detaching the attachment portion 42 of the backrest member 4 from the attachment 6, and then removing the backrest member 4. While passing under the seating seat 5, it is rotated around the bolt 14 forming the second vertical axis as indicated by an arrow R1 in FIG. A vertically long posture along the section 11 is adopted. Next, as indicated by an arrow R2 in FIG. 10, the right gate-shaped member 2 is rotated around the right support protrusion 34 forming the right first longitudinal axis, and then the left gate By rotating the shape member 1 around the left support projection 33 forming the left first longitudinal axis together with the backrest member 4 as indicated by an arrow R3 in FIG. The left portal member 1 and the right portal member 2 overlap each other on both sides of the backrest member 4 on the front support rod 3. The hanging sheet type folding chair A folded in this way can be carried in a bag (not shown).
[0029]
When unfolding and assembling the above-described folding seat type folding chair A, a procedure reverse to the above-described folding procedure may be performed.
[0030]
In the embodiment described above, since the pair of left and right portal members 1 and 2 are made of a metal round pipe material, the strength is excellent. If these portal members 1 and 2 are made of resin pipes, it is easy to achieve weight reduction. In the present invention, the expansion / contraction mechanism is not limited to the clamp 53 described above, and other types such as a buckle may be employed.
[0031]
【The invention's effect】
According to the hanging seat type folding chair according to the present invention, the burden applied to the user's waist and legs is reduced, whether in a sitting state or in a sitting position, and the user's posture is stable, for a long time. Feels less tired from use. Further, when folded, one gate-shaped member and the other gate-shaped member overlap each other on both sides of the backrest portion, so that it becomes a compact shape that can be easily carried in a bag. Further, since the height of the seating seat can be adjusted according to the size of the user's body, the effect of not feeling tiredness due to long-time use as described above is promoted. Furthermore, the connection between the attachment portion of the backrest member and the fixture during use and the release of the connection during folding can be quickly and easily performed by simply inserting and removing the insertion pin. Moreover, at the time of use, there exists an effect that a wobble is prevented by the effect | action of the presser provided in the said insertion pin, and a use condition is stabilized.
[0032]
The hanging seat type folding chair of the present invention that produces such an effect, that is, the effect of reducing the burden on the legs and waist when sitting for a long time, is a television, reading, Go, shogi, Only elderly people and those with poor limbs, such as various indoor games such as mahjong, video games, knitting, calligraphy, dialogue with customers, meals, banquets, reading in France, meals and meetings in temples and meeting places In addition, it can be used beneficially for young people and healthy people, and it can also be carried in a bag, so it can also be used as outdoor equipment for sports watching, outdoor meetings / banquets, camping, fishing, etc. A wide variety of applications are possible.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view seen from the front upper side showing a state in which a hanging seat type folding chair according to an embodiment of the present invention is assembled.
FIG. 2 is a schematic explanatory view seen from the front for explaining the operation of the hanging seat type folding chair in use.
FIG. 3 is a perspective view showing an extension / contraction mechanism of a seating seat.
FIG. 4 is a partially cutaway front view of a mounting portion between a left portal member and a backrest member.
FIG. 5 is a partially broken front view of a mounting portion between a left front leg and a front support rod.
FIG. 6 is a schematic perspective view showing an attachment provided on the right portal member side, an attachment portion on the backrest member side, an insertion pin, and the like.
FIG. 7 is a partially cutaway front view when the mounting tool and the mounting part are connected.
FIG. 8 is an explanatory view showing a plan view of a state in which the hanging seat type folding chair is assembled.
FIG. 9 is an explanatory view showing the state in which the backrest member is folded up in a plan view.
FIG. 10 is an explanatory view showing the state in which the gate member on the right side is folded up in a plan view.
FIG. 11 is an explanatory view showing the state in which the hanging seat type folding chair is completely folded in a plan view.
[Explanation of symbols]
A Hanging sheet type folding chair 1, 2 Portal member 3 Front support rod 4 Backrest member 5 Seating seat 6 Attachment 7 Insertion pins 11, 21 Front leg portion 13, 22 Front leg portion 13, 23 Rear leg portion 14 Bolt (second Vertical axis)
33, 34 Support protrusion (first vertical axis)
42 Mounting part 43 Pin insertion hole 53 Clamp (extension mechanism)
61 Upper plate portion 62 Rear plate portion 63 Lower plate portion 64 Opening port 65 Pin insertion hole 75 Presser

Claims

A distance between the front leg portion and the rear leg portion, which has a long flange portion in the front-rear direction, and a front leg portion and a rear leg portion integrally connected to each of the front end portion and the rear end portion of the flange portion. A pair of left and right gate-shaped members opposed to each other at a longer distance, and both ends of the front leg portions between the lower ends of the pair of left and right front leg portions provided on these portal-shaped members. And a pair of left and right front support rods connected to the left and right first longitudinal axes so as to be rotatable relative to each other. One end portion of the backrest member that is pivotable about the second vertical axis between the longitudinally long posture and the laterally long posture that extends laterally from the gate-shaped member and is horizontally mounted between the pair of left and right portal members. Attached to the other end of the backrest member and the fixture provided at the rear of the other portal member. And a detachable mounting portion, and a flexible seating sheet is suspended in a suspended state between the flanges of the pair of left and right portal members. Folding chair.

The suspension seat type folding chair according to claim 1, wherein the seating seat is provided with an expansion / contraction mechanism capable of increasing / decreasing a hanging width of the seating seat.

The fixture includes an upper plate portion, a rear plate portion suspended from the rear end portion of the upper plate portion, a lower plate portion projecting forward from a lower end portion of the rear plate portion, and the upper plate A front-opening U-shaped member having an opening formed between the front end portion of the plate portion and the front end portion of the lower plate portion, and an upper plate portion and a lower plate of the U-shaped member. Concentric pin insertion holes have been established in the
A pin insertion hole that is concentrically arranged in the pin insertion hole when the fitting is fitted to the attachment, is established in the attachment portion of the backrest member that is detachable through the opening to the attachment,
The suspension seat type folding chair according to claim 1 or 2, further comprising an insertion pin that can be inserted into and removed from the pin insertion hole of the fixture and the pin insertion hole of the attachment portion fitted to the fixture. .

The insertion pin is inserted into the insertion pin when the insertion pin is inserted into the pin insertion hole of the attachment and the pin insertion hole of the attachment portion fitted to the attachment. By contacting the rear surface of the rear plate portion of the fixture within the range of the left and right sides of the position, relative rotation between the fixture centered on the insertion pin and the attachment portion of the backrest member is suppressed. The hanging sheet type folding chair according to claim 3, wherein a plate-like presser is provided.