JP3965296B2

JP3965296B2 - Folding chair

Info

Publication number: JP3965296B2
Application number: JP2001379206A
Authority: JP
Inventors: ▲ヨシ▼侑南浦
Original assignee: Naigai Co Ltd
Current assignee: Naigai Co Ltd
Priority date: 2001-10-22
Filing date: 2001-12-12
Publication date: 2007-08-29
Anticipated expiration: 2021-12-12
Also published as: JP2003199642A

Description

【０００１】
【発明の属する技術分野】
本発明は、不使用時には座板が直立姿勢で保持され、座板を地面に略平行な姿勢まで回動させて使用する折り畳み椅子に関する。
【０００２】
【従来の技術】
従来から、不使用時には座板が直立姿勢で座板保持部材に保持され、この姿勢から座板を上方へスライド移動させることで座板が回動可能となり、座板を地面に対して略平行な姿勢まで回動させた状態で使用する折り畳み椅子が知られている。このような折り畳み椅子は、座板保持部材を壁面等に取り付けることによって、不使用時には座板を壁面等に沿った状態としておき、使用時にのみ座板が壁面等から突出した状態にすることができるため、不使用時に折り畳み椅子の周囲を広く使用することができる。
【０００３】
【発明が解決しようとする課題】
しかしながら、上記のような従来の折り畳み椅子は、使用時に座板を回動させようとして座板を上方にスライド移動させるとき、座板保持部材に対する座板の姿勢が安定しないため、座板を上方に移動させる作業が不便であった。また、座板を回動させるときは、ユーザは座板を上方へ持ち上げた状態を維持したままで回動させなくてはならず、回動操作も不便であった。
【０００４】
本発明は、上述した問題点を解決するためになされたものであり、座板のスライド移動動作及び回動動作を円滑に行うことができる折り畳み椅子を提供することを目的とする。
【０００５】
【課題を解決するための手段】
上記目的を達成するために請求項１に記載の発明は、不使用時には座板が直立姿勢で座板保持部材に保持され、この姿勢から座板を上方へスライド移動させることで座板が回動可能となり、座板を地面に対して略平行な姿勢まで回動させて使用する折り畳み椅子において、
前記座板の両側の側面部に形成された長孔に対して相対移動自在に係合するように、前記座板保持部材に取り付けられる回動支持軸と、
前記座板に設けられた平面状の座部と面的に接触し、当該座部との係止で座板の直立姿勢を保持すると共に、前記座板の上方へのスライド移動を案内するスライド移動案内部と、
前記スライド移動案内部の案内による前記座板の上方へのスライド移動で前記座板が前記スライド移動案内部から離脱して回動可能となったとき、この回動時における前記長孔と前記回動支持軸の相対位置を保持するために、前記座板下部の回動動作を案内する回動動作案内部と
を備えたものである。
【０００６】
この構成によれば、スライド移動案内部によって略鉛直方向へのスライド移動が案内されるため、かかるスライド移動時の座板の姿勢が安定する。また、回動動作案内部によって座板下部の回動動作が案内され、座板の長孔と回動支持軸との相対位置が保持されるため、座板の回動動作時における回動支持軸及び座板支持部材に対する座板の相対位置が安定する。これにより、座板使用時に、ユーザが、座板を安定した位置及び姿勢に保ちながら上方へスライド移動させたり、回動動作させる必要がなくなるので、座板の回動操作を円滑に行うことができる。
【０００７】
また、上記構成では、座板はスライド移動案内部との係止により直立姿勢が保持され、スライド移動案内部から離脱したときに回動可能となる構成をとり、ばね等の部材を用いることなく座板の直立姿勢の保持及び回動を行うようにしている。従って、変形・伸縮する部品を使用することなく座板の直立姿勢の保持及び回動を行うので、部品を消耗・損傷させるおそれがなく、折り畳み椅子の製品寿命を長くすることができる。また、引きばね等の弾力性を利用して座板の直立姿勢を保持し、回動姿勢を安定化させる構成をとる従来の折り畳み椅子では、座板を回動させた時、引きばね等の弾性力によって座板が直立姿勢に戻ろうとするために、座板と座板保持部材の間に指等を挟んでしまうおそれがあったが、本発明に係る折り畳み椅子は、ばね等の部材を用いていないので、優れた安全性を発揮する。
【０００８】
また、請求項２に記載の発明は、請求項１に記載の折り畳み椅子であって、前記スライド移動案内部及び回動動作案内部は、前記座板下部の動作に合わせた曲線形状を有する一部材で構成されるものである。
【０００９】
また、請求項３に記載の発明は、請求項２に記載の折り畳み椅子であって、前記スライド移動案内部及び回動動作案内部は、前記座板下部の隅部近傍に当接するように前記座板保持部材に取り付けられているものである。
【００１０】
これらの構成によれば、スライド移動案内部及び回動動作案内部を、複雑な構造を要することなく簡単な構造でもって製造することができる。また、スライド移動案内部及び回動動作案内部の形状を変化させることで、座板のスライド移動動作及び回動動作の案内を、簡単に座板下部の形状・動作に対応させることができる。
【００１１】
また、請求項４に記載の発明は、請求項１乃至請求項３のいずれかに記載の折り畳み椅子であって、前記座板は、その上端部の上方が前記座板保持部材に覆われる状態とされて前記座板保持部材に取り付けられ、
前記スライド移動案内部は、前記座板を、前記座部と面的に接触して直立姿勢に保持した状態で、当該座板の上端部が、その上方を覆う前記座板保持部材から逃れる位置まで弾性変形して当該座板を傾斜させ、当該傾斜した状態の座板が、その上端部側の方向にスライド移動する構成とされているものである。
【００１２】
この構成によれば、スライド移動案が弾性変形することによって、直立姿勢に保持された状態の座板を、その上方を覆う前記座板保持部材から逃れる位置まで傾斜させ、当該座板をその上端部側の方向にスライド移動させることが可能であるので、直立姿勢で保持された状態の座板の真上にスライド移動のためのスペースが無くても座板をスライド移動させて、座板を回動可能状態にすることが可能になる。
【００１３】
また、請求項５に記載の発明は、請求項４に記載の折り畳み椅子であって、前記座板保持部材は、壁面等に埋め込み可能とされ、前記スライド移動案内部に直立姿勢で保持された状態にある前記座板の上部及び側部の少なくとも一部を覆って収納する構成とされているものである。
【００１４】
この構成によれば、座板を、直立姿勢に保持された状態から所定量傾斜させてその上端部側方向にスライド移動させることにより、座板保持部材が座板上部を覆う部分を避けて座板をスライド移動させることが可能である。これにより、省スペース化のために座板の上部及び下部を座板保持部材に収納した構成が採られ、座板の真上にスライド移動のためのスペースを設けることができない場合であっても、座板の上記スライド移動動作を円滑に行うことができる。
【００１５】
【発明の実施の形態】
以下、本発明の第１実施形態に係る折り畳み椅子について図面を参照して説明する。図１は不使用時に座板が直立状態に保持された折り畳み椅子の斜視図、図２は使用時に座板が地面に略平行な姿勢とされた状態の折り畳み椅子を示す図である。本発明に係る折り畳み椅子１は、ユーザが腰を掛けるための座板２と、座板２を回動自在に支持する座板保持部材３とを備えている。図１に示すように、折り畳み椅子１の不使用時には座板２が直立姿勢で座板保持部材３に保持され、図２に示すように、使用時には座板２が地面に対して略平行な姿勢まで回動された状態で座板保持部材３に保持されるようになっている。
【００１６】
折り畳み椅子１の各部の構造について説明する。図３は折り畳み椅子１の分解斜視図、図４は折り畳み椅子１の案内部材を示す斜視図である。座板２は平板状の部材からなり、その上面部にユーザが腰を掛ける平面状の座部２１が形成されている。座板２の手前側の先端部分、すなわち、座板２を直立状態にした場合の上端部分には切り欠き部２２が設けられており、座板２の回動操作時にユーザが切り欠き部２２に手を挿し入れて、取手部２３を握ることができるようにされている。また、座板２の両側の側面部には、側面部の長さ方向に延びる長孔２４が設けられている。長孔２４は、座板２の直立状態において中心部よりも下方側に設けられている。この長孔２４に、座板保持部材３に取り付けられた回動支持軸３３（後述）が嵌入されることによって、座板２が座板保持部材３に回動自在に支持されるようになっている。
【００１７】
座板保持部材３は壁面等に取り付けられるものであり、その背面部３１を壁面に当接させた状態として取り付ける、座板２が取り付けられる突出部３２部分のみを壁面から突出させ、突出部３２以外の部分は壁面に埋め込んで壁面に取り付ける、等の方法による。また、背面部３１から突出部３２を含む全ての部分を壁面に埋め込んで取り付けることも可能であり、この場合は、不使用時に座板２を直立状態としたとき、座板２が壁面から突出しないように設計することも可能である。
【００１８】
座板保持部材３の側面部に設けられた孔部３４には回動支持軸３３が取り付けられている。回動支持軸３３は孔部３４を通して座板２の長孔２４に嵌入され、座板２を回動自在に支持するものである。回動支持軸３３としては、座板保持部材３に係止させるためにボルトや頭付のピン等が用いられることが好ましく、座板保持部材３への取り付けを完了した状態において、図１及び図２に示すように、回動支持軸３３と座板保持部材３の側面部とがフラットな状態となるようにされている。
【００１９】
座板２の座板保持部材３への取り付けは、座板２の長孔２４を座板保持部材３の孔部３４にあてがった状態とし、この状態において、座板保持部材３の側方から長孔２４を通して回動支持軸３３を長孔２４に嵌入させることによって行う。回動支持軸３３の径は、長孔２４内で相対的に移動可能となるように、長孔２４の幅よりも若干小さく設定されている。
【００２０】
また、座板保持部材３内の両側の側面部には、座板２下部の隅部近傍に当接するようにして、案内部材４が取り付けられる。案内部材４は、座板保持部材３に当接させて取り付けられる取付部４１と、回動支持軸３３よりも下方で座板２を保持することによって座板２の直立姿勢時における上方へのスライド移動、及び座板２の回動動作を案内する案内部４３と、取付部４１に対する案内部４３の取付状態を支持する支持部４４と、座板２が地面に略平行な姿勢まで回動したときに座板２に係止して、その姿勢で座板２を保持する係止部４５とからなる。この係止部４５は、その上面が座板保持部材３内の上壁に当接するようにして座板保持部材３に取り付けられる。また、案内部材４には、座板保持部材３の孔部３４に通じ、回動支持軸３３が嵌入される孔部４７が設けられている。
【００２１】
上記案内部４３は、座板２が直立状態にあるときに、座板２の座部２１の下部に面的に接触して座板２の上下方向へのスライド移動を案内するスライド移動案内部４３ａと、座板２の回動時に座板２の下端部に接触可能とされ、その回動動作を案内する回動動作案内部４３ｂとからなる。スライド移動案内部４３ａは、直立状態にある座板２の座部２１に面接触するために、座部２１との接触面が略鉛直方向に延びるように形成されている。このスライド移動案内部４３ａは、座板２に係止して座板２の直立状態を保持する機能をも果たしており、座板２が直立状態にあるときに、座板２を上方へスライド移動させることによって（このとき長孔２４は回動支持軸３３に対して相対的に移動する）、座板２とスライド移動案内部４３ａとの接触・非接触状態（すなわち、座板２の直立状態の保持・非保持状態）が切り換わるようになっている。回動動作案内部４３ｂは、座板２の回動時における長孔２４と回動支持軸３３の相対位置を保持するために、座板２の下部に接触するものであり、その形状は座板２下部の形状や回動方向に応じて形成される。
【００２２】
なお、案内部材４の材質は特に限定されるものではなく、金属、合成樹脂等があげられるが、強度を有する合成樹脂によって製造すれば、成形の容易性等の点から低コストでの製造が可能である。
【００２３】
次に、座板２の回動動作について説明する。図５（ａ）乃至（ｄ）は座板２の回動動作を示す折り畳み椅子１の側面図である。なお、図５においては、座板保持部材３に対する座板２の姿勢を明瞭に示すため、座板２を２点鎖線で示している。図５（ａ）に示すように、座板２が直立状態で座板保持部材３に支持されているときは、座板２は、その重みによって下方に下がり、回動支持軸３３は長孔２４の上端部に係止している。このとき、座板２は、その重みにより回動支持軸３３を回動軸として図５（ａ）の反時計回り方向に回動しようとするが、回動支持軸３３よりも下方において、案内部材４のスライド移動案内部４３ａが座板２の座部２１に接触・係止しているので、座板２は座板保持部材３に直立した姿勢が保持されている。
【００２４】
折り畳み椅子１の使用時、座板２を地面に略平行な状態まで回動させる場合は、図５（ｂ）に示すように、座板２を上方にスライド移動させて持ち上げた状態とし、案内部材４のスライド移動案内部４３ａと座板２とを非接触状態として、座板２の直立状態が案内部材４に保持された状態を解除する。このとき、座板２は、回動支持軸３３が長孔２４の下端部に係止する状態まで上方に持ち上げられる。
【００２５】
座板２を持ち上げ、座板２の下部がスライド移動案内部４３ａから離れると、図５（ｃ）に示すように、座板２は反時計回り方向に回動可能になる。この座板２の回動動作時、座板２の上端部が反時計回り方向に回動すると同時に、座板２の下端部も回動支持軸３３を回動支点として反時計回り方向に回動する。このように座板２の下端部が回動する時、座板２の下端部の回動方向が案内部材４の回動動作案内部４３ｂによって規制され、よって、回動動作案内部４３ｂに座板２の下端部が案内されて回動する。座板２の長孔２４と回動支持軸３３との相対的な位置関係が一定に保たれるようになっている。すなわち、回動支持軸３３が長孔２４の下端部に係止した状態が保たれるように、座板２の座板保持部材３に対する相対位置が保持される。
【００２６】
座板２が更に反時計回り方向に回動していき、座板２の下端部が回動動作案内部４３ｂの上端から離れ、座板２が地面に略平行な姿勢まで回動すると、図５（ｄ）に示すように、座板２の下端部（図５（ｄ）では右端部）が案内部材４の係止部４５に係止する。このように座板２の下端部が係止部４５に係止することによって、座板２の反時計回り方向への回動が抑止され、座板２は地面に略平行な姿勢で座板保持部材３に保持される。なお、この状態においては、座板２の下端部（図５（ｄ）では右端部）が座板保持部材３の側壁に接近した状態となるようになっており、座板２の水平方向への移動が一定範囲内に制限され、座板２の座板保持部材３に対する相対位置が保持されるようになっている。
【００２７】
このように、本実施形態の折り畳み椅子１によれば、案内部材４のスライド移動案内部４３ａによって座板２の上下方向へのスライド移動が案内されるため、かかるスライド移動時の座板２の姿勢は安定したものとなる。また、案内部材４の回動動作案内部４３ｂによって座板２の下部が保持され、座板２の長孔２４と回動支持軸３３との相対位置が保持されるため、座板２の回動動作時において、回動支持軸３３及び座板保持部材３に対する座板２の相対位置及び姿勢が安定する。これにより、ユーザが座板２を安定した位置及び姿勢に保ちながら上方へスライド移動させたり、回動動作させる必要がなくなるので、座板２の回動操作を円滑に行うことができる。
【００２８】
なお、本発明は上記実施の形態の構成に限られず種々の変形が可能である。例えば、上記実施の形態では、案内部材４は、座板保持部材３内の両側の側部に取り付けられるものとされているが、座板２の直立状態での保持及び座板２の回動時における座板２下端部の案内が可能であれば、座板保持部材３内の側部のいずれか一方にのみ取り付けることも可能である。このように座板保持部材３内の側部のいずれか一方のみに案内部材４を取り付ける場合は、上記図３で示した場合よりも、座板２との接触面を大きくすることによって、十分に座板２の直立姿勢を保持し、座板２の回動動作を案内できるようにすることが望ましい。但し、案内部材４を座板保持部材３内の両側の側部に取り付ける場合の方が、座板２の回動支持軸３３及び座板保持部材３に対する姿勢をより安定させることができる。
【００２９】
次に、本発明の第２の実施形態に係る折り畳み椅子について説明する。図６は不使用時に座板が直立状態に保持された第２の実施形態に係る折り畳み椅子の斜視図、図７は使用時に座板が地面に略平行な姿勢とされた第２の実施形態に係る折り畳み椅子を示す図である。本発明の第２の実施形態に係る折り畳み椅子１００は、ユーザが腰を掛けるための座板１２と、座板１２を回動自在に支持する座板保持部材１３とを備えている。第１の実施形態に係る折り畳み椅子１と同様に、折り畳み椅子１００の不使用時には座板１２が直立姿勢で座板保持部材１３に保持され（図６）、使用時には座板１２を地面に対して略平行な姿勢まで回動させて使用するようになっている（図７）。折り畳み椅子１００の構造は、その概略は折り畳み椅子１と同様であるため、以下は主に折り畳み椅子１との相違点を説明する。
【００３０】
座板１２は、座板保持部材１３に直立状態で保持されているときに手前側となる側面部に穴部１２２が設けられており、座板１２の使用時にユーザが穴部１２２に指を挿し入れて、座板１２を手前側に回動させることができるようになっている。また、座板１２の両側面部の長孔１２４に嵌入して座板１２を回動自在に軸支する回動支持軸１３３は案内部材１４に取り付けられており、この案内部材１４が座板保持部材１３にビス２００で固定されることによって、座板１２が座板保持部材１３に回動自在に保持されるようになっている。
【００３１】
図８は座板保持部材１３の斜視図である。座板保持部材１３は壁面等に埋め込んで設置されるものであり、露出部１３２のみを壁面等から露出させ、露出部１３２以外の座板収納部１３４部分は壁面等から露出しないように設置される。よって、壁面等に折り畳み椅子１００を設置した後は、座板保持部材１３の露出部１３２及び案内部材１４の一部のみが壁面等から露出した状態となる。
【００３２】
座板保持部材１３は、上記露出部１３２及び座板収納部１３４からなる外枠１３５と、直立姿勢にある座板１２の側面部を支持すると共に外枠１３５を補強する役割を果たす桟部材１３６と、この桟部材１３６に取り付けられる化粧板１３７（図７）とからなる。
【００３３】
座板保持部材１３の外枠１３５には、案内部材１４を嵌め込むための凹部１３５ａが設けられている。この凹部１３５ａは座板保持部材１３の内側壁に設けられており、当該内側壁の高さ方向中心部よりも下方に設けられている。凹部１３５ａは案内部材１４の外形に合わせた形状とされ、案内部材１４を凹部１３５ａに取り付け固定するためのピン挿込口１３５ｂが、その内部に設けられている。
【００３４】
図９（ａ）は案内部材１４の斜視図であり、（ｂ）は（ａ）とは別角度から見た案内部材１４の斜視図である。案内部材１４は、（１）その片方の側面部から他方の側面部に貫通する孔部１４７に嵌入される回動支持軸１３３（図６）によって、座板１２を回動自在に軸支する機能を有すると共に、（２）座板１２の回動時における長孔１２４（図７）と回動支持軸１３３の相対位置を保持すべく座板１２の下端部の回動動作を案内する機能を有する。
【００３５】
案内部材１４は、座板保持部材１３の凹部１３５ａに嵌入されて取り付けられる取付部１４１と、座板１２に係止して座板１２の傾斜時（後述）における座板１２の上端部側方向へのスライド移動、及び座板２の回動動作を案内する案内部１４３と、座板１２が地面に略平行な姿勢まで回動したときに座板１２に係止して、その姿勢で座板１２を保持する係止部１４５とを有している。この係止部１４５は、案内部材１４を凹部１３５ａに取り付けたときにその上面が桟部材１３６の下面部に当接するようになっている。また、案内部材１４の上面部には、案内部材１４の凹部１３５ａへの抜き差し方向に延びる溝部１４６が設けられており、この溝部１４６と凹部１３５ａ内に設けられている突部（不図示）とが填まり合うことによって、案内部材１４の凹部１３５ａ内への挿入方向が定められると共に、当該挿入方向に直交する方向における案内部材１４の凹部１３５ａに対する位置決めがなされる。なお、案内部材１４の正面部の上端部及び下端部近傍には、ビス２００（図６及び図７）を嵌入するための孔１４８が設けられている。ビス２００は、この孔１４８を貫通して凹部１３５ａ内の挿込口１３５ｂに嵌入されるようになっている。
【００３６】
上記案内部１４３は、折り畳み椅子１（第１実施形態）の案内部４３と同様に、座板１２が直立状態にあるときに、座板１２の座部１２１の下部に面的に接触して座板１２の上下方向へのスライド移動を案内するスライド移動案内部１４３ａと、座板１２の回動時に座板１２の下端部に接触して、座板１２の回動動作を案内する回動動作案内部１４３ｂとからなる。
【００３７】
少なくともスライド移動案内部１４３ａは弾性力を有する素材で形成されている。スライド移動案内部１４３ａ部分は取付部１４１には固着されておらず、回動動作案内部１４３ｂ部分のみが取付部１４１に固着されている。スライド移動案内部１４３ａには、折り畳み椅子１（第１実施形態）に設けられている支持部４４は設けられておらず、スライド移動案内部１４３ａが座板１２を直立姿勢に保持した状態のままで弾性変形して、座板１２を傾斜した姿勢とすることが可能とされている。これにより、スライド移動案内部１４３ａは、当該傾斜した状態の座板１２をその上端部側方向にスライド移動させ、そのスライド移動方向を案内するようになっている。
【００３８】
スライド移動案内部１４３ａの弾性変形量（所定量）は、座板１２が、その上端部が上方を覆う座板保持部材１３部分から逃れる位置まで移動可能となるように設定され、この座板１２の真上の座板保持部材１３部分を避けて上記スライド移動ができるように構成されている。また、スライド移動案内部１４３ａの弾性力は、不使用時に座板１２との係止により座板１２を直立姿勢に保持することができ、かつユーザが座板１２の穴部１２２を手前に引いたときには弾性変形し得る程度の力に設定される。
【００３９】
なお、案内部材４の材質は特に限定されるものではなく、上記弾性力を有する材質であれば、金属、合成樹脂等によって構成することが可能である。また、案内部材１４は、回動支持軸１３３を案内部材１４に取り付け、回動支軸時１３３を座板１２の長孔１２４に嵌入させ、案内部材１４に座板１２が回動自在に取り付けられた状態に組み付けてから、座板１２と共に座板保持部材１３に取り付けられる。
【００４０】
次に、座板１２の回動動作について説明する。図１０（ａ）（ｂ）（ｃ）及び図１１(ｄ)（ｅ）は座板１２の回動動作を示す折り畳み椅子１００の側面図である。なお、図１０，図１１においては、座板保持部材１３に対する座板１２の姿勢を明瞭に示すため、座板１２を２点鎖線で示している。図１０（ａ）に示すように、座板１２が直立状態で座板保持部材１３に支持されているときは、座板１２は、その重みによって下方に下がり、回動支持軸１３３は長孔１２４の上端部に係止している。このとき、座板１２はスライド移動案内部１４３ａとの接触・係止により、折り畳み椅子１（第１実施形態）の場合と同様に、座板保持部材１３に直立した姿勢が保持されている。
【００４１】
折り畳み椅子１００の使用時に、座板１２を地面に略平行な状態まで回動させる場合は、座板１２が上記直立姿勢であって、長孔１２４の上端部に回動支持軸１３３が係止した状態にあるときに（図１０（ａ）に示す状態）、穴部１２２に指を挿し入れて座板１２を手前側（図１０（ａ）で左側）に倒し、図１０（ｂ）に示すように傾斜させる。スライド移動案内部１４３ａは弾性変形可能に構成されているため、この座板１２の傾斜に応じて弾性変形する。これにより、座板１２の上端部が座板保持部材１３から離れ、座板１２の上端部の上方に座板保持部材１３が存在しない状態にする。
【００４２】
上記のように座板１２を傾斜させた後、ユーザは、傾斜した状態の座板１２をその上端部側方向に持ち上げ、座板１２の側面をスライド移動案内部１４３ａに対してスライドさせながら上方に移動させていく（図１０（ｃ）参照）。このときスライド移動案内部１４３ａは、座板１２の傾斜に応じて弾性変形し、座板１２のその上端部側方向へのスライド移動を案内するようになっている。そして、スライド移動案内部１４３ａと座板１２とを非接触状態として、座板１２の直立状態が案内部材１４に保持された状態を解除する。このとき、座板１２は、回動支持軸１３３が長孔１２４の下端部に係止する状態まで上方に持ち上げられる。
【００４３】
座板１２を座板１２の上端部側方向にスライド移動させ、座板１２の下端部がスライド移動案内部１４３ａから離れると、図１１(ｄ)に示すように、座板１２は反時計回り方向に回動可能になる。この座板１２の回動動作時、座板１２の上端部が反時計回り方向に回動すると同時に、座板１２の下端部も回動支持軸１３３を回動支点として反時計回り方向に回動する。これにより、折り畳み椅子１の場合と同様に、座板１２の回動時、座板１２の下端部は、その回動方向が回動動作案内部１４３ｂによって案内され、座板１２の長孔１２４と回動支持軸１３３との相対的な位置関係が一定に保たれる。なお、座板１２の下端部がスライド移動案内部１４３ａから離れた後は、スライド移動案内部１４３ａはその弾性力により元の形状に復元する。
【００４４】
座板１２が更に反時計回り方向に回動していき、座板１２の下端部が回動動作案内部１４３ｂの上端から離れ、座板１２が地面に略平行な姿勢まで回動すると、図１１(ｅ)及び図７に示すように、座板１２の下端部（図１１(ｅ)では右端部）が案内部材１４の係止部１４５に係止する。これにより、座板１２の反時計回り方向への回動が抑止され、座板１２は地面に略平行な姿勢で座板保持部材１３に保持される。
【００４５】
このように、第２の実施形態に係る折り畳み椅子１００によれば、スライド移動案内部１４３ａが弾性変形することによって、直立姿勢に保持された状態の座板１２を所定量傾斜させ、当該傾斜した状態の座板１２をその上端部側方向にスライド移動させることが可能であるので、直立姿勢で保持された状態の座板１２の真上にスライド移動のためのスペースを設けなくても座板１２をスライド移動させることができる。これにより、図６に示すように、座板１２の上部が座板保持部材１３に覆われた構成とされる場合であっても、座板１２を上方にスライド移動させてスライド移動案内部１４３ａとの係止を解除して、座板１２を回動可能な状態にすることができる。
【００４６】
【発明の効果】
以上のように本発明によれば、スライド移動案内部によって座板のスライド移動が案内されるため、かかるスライド移動時の座板の姿勢が安定する。また、回動動作案内部によって座板下部の回動動作が案内され、座板の長孔と回動支持軸との相対位置が保持されるため、座板の回動動作時における回動支持軸及び座板支持部材に対する座板の相対位置が安定する。これにより、座板使用時に、ユーザが、座板を安定した位置及び姿勢に保ちながら上方へスライド移動させたり、回動動作させる必要がなくなるので、座板の回動操作を円滑に行うことができる。
【００４７】
また、本発明に係る折り畳み椅子では、座板はスライド移動案内部との係止により直立姿勢が保持され、スライド移動案内部から離脱したときに回動可能となる構成をとり、ばね等の部材を用いることなく座板の直立姿勢の保持及び回動を行うようにしている。従って、変形・伸縮する部品を使用することなく座板の直立姿勢の保持及び回動を行うので、消耗・損傷する部品を使用する必要がなく、折り畳み椅子の製品寿命を長くすることができる。また、引きばね等の弾力性を利用して座板の直立姿勢を保持し、回動姿勢を安定化させる構成をとる従来の折り畳み椅子では、座板を回動させた時、引きばね等の弾性力によって座板が直立姿勢に戻ろうとするために、座板と座板保持部材の間に指等を挟んでしまうおそれがあったが、本発明に係る折り畳み椅子は、ばね等の部材を用いていないので、優れた安全性を発揮する。
【００４８】
また、スライド移動案内部及び回動動作案内部を、座板下部の動作に合わせた曲線形状を有する一部材で構成した場合や、スライド移動案内部及び回動動作案内部を座板下部の隅部近傍に当接するように座板保持部材に取り付ける構成とした場合は、複雑な構造を要することなく簡単な構造でもって、座板のスライド移動動作及び回動動作を案内することができる。また、スライド移動案内部及び回動動作案内部の形状を変化させることによって、座板のスライド移動動作及び回動動作の案内を、簡単に座板下部の形状・動作に対応させることができる。
【００４９】
また、スライド移動案内部が弾性変形することによって、直立姿勢に保持された状態の座板を、その上方を覆う前記座板保持部材から逃れる位置まで傾斜させ、当該座板をその上端部側方向にスライド移動可能となるように構成すれば、直立姿勢で保持された状態の座板の真上にスライド移動のためのスペースが無くても座板をスライド移動させて、座板を回動可能状態にすることが可能になる。
【００５０】
また、座板保持部材を、スライド移動案内部に直立姿勢で保持された状態にある座板の上部及び側部の少なくとも一部を覆って収納する構成とした場合においても、座板を、直立姿勢に保持された状態から所定量傾斜させてその上端部側方向にスライド移動させることにより、座板保持部材が座板上部を覆う部分を避けて座板をスライド移動させることが可能である。これにより、省スペース化のために座板の上部及び下部を座板保持部材に収納した構成が採られ、座板の真上にスライド移動のためのスペースを設けることができない場合であっても、座板の上記スライド移動動作を円滑に行うことができる。
【図面の簡単な説明】
【図１】本発明に係る折り畳み椅子を示す斜視図であり、座板が直立状態に保持された状態を示す図である。
【図２】本発明に係る折り畳み椅子を示す斜視図であり、座板が地面に略平行な姿勢とされた状態の折り畳み椅子を示す図である。
【図３】上記折り畳み椅子の分解斜視図である。
【図４】上記折り畳み椅子の案内部材を示す斜視図である。
【図５】（ａ）乃至（ｄ）は座板の回動動作を示す折り畳み椅子の側面図である。
【図６】本発明の第２実施形態に係る折り畳み椅子を示す斜視図であり、不使用時に座板が直立状態に保持された状態を示す図である。
【図７】本発明の第２実施形態に係る折り畳み椅子を示す斜視図であり、座板が地面に略平行な姿勢とされた状態の折り畳み椅子を示す図である。
【図８】座板保持部材の斜視図である。
【図９】（ａ）は案内部材の斜視図であり、（ｂ）は（ａ）とは別角度から見た案内部材の斜視図である。
【図１０】（ａ）乃至（ｃ）は座板の回動動作を示す第２実施形態に係る折り畳み椅子の側面図である。
【図１１】（ｄ）（ｅ）は座板の回動動作を示す第２実施形態に係る折り畳み椅子の側面図である。
【符号の説明】
１，１００折り畳み椅子
２，１２座板
２４，１２４長孔
３，１３座板保持部材
３３，１３３回動支持軸
４，１４案内部材
４３，１４３案内部
４３ａ，１４３ａスライド移動案内部
４３ｂ，１４３ｂ回動動作案内部[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a folding chair that is used when a seat plate is held in an upright posture when not in use and is rotated to a posture substantially parallel to the ground.
[0002]
[Prior art]
  Conventionally, when not in use, the seat plate is held by the seat plate holding member in an upright posture, and the seat plate can be rotated by sliding the seat plate upward from this posture, and the seat plate is substantially parallel to the ground. Folding chairs that are used in a state of being rotated to a proper posture are known. In such a folding chair, by attaching the seat plate holding member to the wall surface or the like, the seat plate is kept along the wall surface or the like when not in use, and the seat plate protrudes from the wall surface or the like only when in use. Therefore, the periphery of the folding chair can be widely used when not in use.
[0003]
[Problems to be solved by the invention]
  However, in the conventional folding chair as described above, when the seat plate is slid upwardly in an attempt to rotate the seat plate during use, the seat plate is not stable with respect to the seat plate holding member. The work to move to was inconvenient. Further, when the seat plate is rotated, the user must rotate the seat plate while maintaining the state where the seat plate is lifted upward, and the rotation operation is inconvenient.
[0004]
  The present invention has been made to solve the above-described problems, and an object thereof is to provide a folding chair that can smoothly perform a sliding movement operation and a rotation operation of a seat plate.
[0005]
[Means for Solving the Problems]
  In order to achieve the above object, according to the first aspect of the present invention, when not in use, the seat plate is held by the seat plate holding member in an upright posture, and the seat plate is rotated by sliding the seat plate upward from this posture. In a folding chair that can be moved and used by rotating the seat plate to a position substantially parallel to the ground,
  A pivot support shaft attached to the seat plate holding member so as to engage with a long hole formed in a side surface portion on both sides of the seat plate so as to be relatively movable;
  The seat plateIt is in surface contact with the flat seat provided on theLockingsoA slide movement guide unit that holds the upright posture of the seat plate and guides the slide movement upward of the seat plate;
  According to the guidance of the slide movement guide unitSlide movement above the seat platesoWhen the seat plate is separated from the slide movement guide portion and can turn, the rotation of the lower portion of the seat plate is maintained in order to maintain the relative position of the long hole and the turning support shaft during the turning. A rotating motion guide for guiding the motion, and
WithTheIs.
[0006]
  According to this configuration, since the slide movement guide unit guides the slide movement in the substantially vertical direction, the posture of the seat plate during the slide movement is stabilized. Further, the rotation operation guide part guides the rotation operation of the lower portion of the seat plate, and the relative position between the long hole of the seat plate and the rotation support shaft is maintained. The relative position of the seat plate with respect to the shaft and the seat plate support member is stabilized. This eliminates the need for the user to slide and rotate the seat plate while keeping the seat plate in a stable position and posture, so that the seat plate can be smoothly rotated. it can.
[0007]
  In the above configuration, the seat plate is held in an upright posture by being locked with the slide movement guide portion, and can be rotated when detached from the slide movement guide portion without using a member such as a spring. The upright posture of the seat plate is held and rotated. Accordingly, since the upright posture of the seat plate is maintained and rotated without using a deformable / extensible component, there is no risk of consuming or damaging the component, and the product life of the folding chair can be extended. In addition, in the conventional folding chair that is configured to maintain the upright posture of the seat plate using the elasticity of the pull spring or the like and stabilize the turning posture, when the seat plate is rotated, Since the seat plate tends to return to the upright posture due to the elastic force, there is a risk that a finger or the like may be pinched between the seat plate and the seat plate holding member, but the folding chair according to the present invention has a member such as a spring. Since it is not used, it exhibits excellent safety.
[0008]
  Further, the invention according to claim 2 is the folding chair according to claim 1, wherein the slide movement guide portion and the rotation motion guide portion have a curved shape adapted to the operation of the lower portion of the seat plate. It is composed of members.
[0009]
  The invention according to claim 3 is the folding chair according to claim 2, wherein the slide movement guide portion and the rotation operation guide portion are in contact with a vicinity of a corner of the lower portion of the seat plate. It is attached to the seat plate holding member.
[0010]
  According to these configurations, the slide movement guide unit and the rotation operation guide unit can be manufactured with a simple structure without requiring a complicated structure. Further, by changing the shapes of the slide movement guide unit and the rotation operation guide unit, the slide movement operation and the rotation operation guide of the seat plate can be easily made to correspond to the shape and operation of the lower part of the seat plate.
[0011]
  The invention according to claim 4 is the folding chair according to any one of claims 1 to 3,The seat plate is attached to the seat plate holding member in a state where the upper end of the seat plate is covered with the seat plate holding member,
  The slide movement guide unit moves the seat plate,In surface contact with the seatIn an upright position,ConcernedThe upper end of the seat plate covers the topTo the position to escape from the seat plate holding memberElastically deformedThe seat plateInclined and the seat plate in the inclined state is the upper end sideofIt is configured to slide in the directionRuIs.
[0012]
  According to this configuration, the sliding plate is elastically deformed, so that the seat plate held in the upright posture isTilt to a position where it escapes from the seat plate holding member that covers the upper side, andIts upper end sideofCan be slid in any direction, so that the seat can be rotated by sliding the seat, even if there is no space for sliding just above the seat held in an upright position It becomes possible to be in a state.
[0013]
  The invention according to claim 5 is the folding chair according to claim 4, wherein the seat plate holding member can be embedded in a wall surface or the like and is held in an upright posture on the slide movement guide portion. Cover and store at least part of the upper and side parts of the seat plate in a stateStructureCompletionWhenIt is what has been.
[0014]
  According to this configuration, the seat plate is tilted by a predetermined amount from the state in which the seat plate is held in the upright posture, and is slid in the upper end side direction so that the seat plate holding member avoids the portion covering the upper portion of the seat plate. It is possible to slide the plate. Thereby, in order to save space, a configuration in which the upper and lower parts of the seat plate are accommodated in the seat plate holding member is adopted, and even if it is not possible to provide a space for sliding movement directly above the seat plate. Thus, the sliding movement of the seat plate can be performed smoothly.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, a folding chair according to a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a folding chair in which a seat plate is held in an upright state when not in use, and FIG. 2 is a diagram showing the folding chair in a state in which the seat plate is substantially parallel to the ground when in use. The folding chair 1 according to the present invention includes a seat plate 2 for a user to sit on and a seat plate holding member 3 that rotatably supports the seat plate 2. As shown in FIG. 1, when the folding chair 1 is not used, the seat plate 2 is held by the seat plate holding member 3 in an upright posture. As shown in FIG. 2, the seat plate 2 is substantially parallel to the ground when used. It is held by the seat plate holding member 3 while being rotated to the posture.
[0016]
  The structure of each part of the folding chair 1 will be described. 3 is an exploded perspective view of the folding chair 1, and FIG. 4 is a perspective view showing a guide member of the folding chair 1. The seat plate 2 is made of a flat plate member, and a planar seat portion 21 on which the user sits is formed on the upper surface portion. A notch portion 22 is provided at the front end portion of the seat plate 2, that is, an upper end portion when the seat plate 2 is in an upright state, and the user does notch portion 22 when the seat plate 2 is rotated. The hand 23 can be inserted and the handle 23 can be gripped. Moreover, the long hole 24 extended in the length direction of a side part is provided in the side part of the both sides of the seat board 2. As shown in FIG. The long hole 24 is provided below the center part in the upright state of the seat plate 2. By inserting a rotation support shaft 33 (described later) attached to the seat plate holding member 3 into the long hole 24, the seat plate 2 is rotatably supported by the seat plate holding member 3. ing.
[0017]
  The seat plate holding member 3 is attached to a wall surface or the like, and is attached with the back surface portion 31 in contact with the wall surface. Only the protruding portion 32 portion to which the seat plate 2 is attached is protruded from the wall surface, and the protruding portion 32 is attached. Other parts are embedded in the wall surface and attached to the wall surface. Moreover, it is also possible to embed and attach all the parts including the protrusion part 32 from the back surface part 31 to the wall surface. In this case, when the seat board 2 is set upright when not in use, the seat board 2 projects from the wall surface. It is also possible to design so that it does not.
[0018]
  A rotation support shaft 33 is attached to the hole 34 provided in the side surface of the seat plate holding member 3. The rotation support shaft 33 is fitted into the long hole 24 of the seat plate 2 through the hole portion 34, and supports the seat plate 2 so as to be rotatable. As the rotation support shaft 33, a bolt, a headed pin, or the like is preferably used for locking the seat plate holding member 3, and in the state where the attachment to the seat plate holding member 3 is completed, FIG. As shown in FIG. 2, the rotation support shaft 33 and the side surface portion of the seat plate holding member 3 are in a flat state.
[0019]
  The seat plate 2 is attached to the seat plate holding member 3 in a state in which the long hole 24 of the seat plate 2 is applied to the hole 34 of the seat plate holding member 3, and in this state, from the side of the seat plate holding member 3. The rotation support shaft 33 is fitted into the long hole 24 through the long hole 24. The diameter of the rotation support shaft 33 is set slightly smaller than the width of the long hole 24 so as to be relatively movable in the long hole 24.
[0020]
  Further, guide members 4 are attached to the side surface portions on both sides in the seat plate holding member 3 so as to abut on the vicinity of the corners of the lower portion of the seat plate 2. The guide member 4 is attached to the seat plate holding member 3 in contact with the mounting portion 41, and the seat plate 2 is held below the rotation support shaft 33 so that the seat plate 2 is moved upward when the seat plate 2 is in the upright posture. A guide portion 43 that guides the sliding movement and the rotation operation of the seat plate 2, a support portion 44 that supports the mounting state of the guide portion 43 with respect to the mounting portion 41, and the seat plate 2 rotates to a posture substantially parallel to the ground. The engaging portion 45 is engaged with the seat plate 2 and holds the seat plate 2 in the posture. The locking portion 45 is attached to the seat plate holding member 3 such that the upper surface thereof is in contact with the upper wall in the seat plate holding member 3. In addition, the guide member 4 is provided with a hole portion 47 that communicates with the hole portion 34 of the seat plate holding member 3 and into which the rotation support shaft 33 is fitted.
[0021]
  When the seat plate 2 is in an upright state, the guide portion 43 is in surface contact with the lower portion of the seat portion 21 of the seat plate 2 and guides the slide movement of the seat plate 2 in the vertical direction. 43a and a rotation operation guide portion 43b that can contact the lower end portion of the seat plate 2 when the seat plate 2 is rotated and guides the rotation operation. The slide movement guide portion 43a is formed such that a contact surface with the seat portion 21 extends in a substantially vertical direction in order to make surface contact with the seat portion 21 of the seat plate 2 in an upright state. The slide movement guide portion 43a also functions to hold the seat plate 2 in an upright state by being locked to the seat plate 2, and when the seat plate 2 is in the upright state, the seat plate 2 is slid upward. By doing so (at this time, the long hole 24 moves relative to the rotation support shaft 33), the seat plate 2 and the slide movement guide portion 43a are in contact / non-contact state (that is, the seat plate 2 is upright) (Holding / non-holding state) is switched. The rotation operation guide 43b is in contact with the lower portion of the seat plate 2 in order to maintain the relative position between the long hole 24 and the rotation support shaft 33 when the seat plate 2 is rotated. It is formed according to the shape of the lower part of the plate 2 and the rotation direction.
[0022]
  The material of the guide member 4 is not particularly limited, and examples thereof include metals and synthetic resins. However, if the guide member 4 is made of a synthetic resin having strength, it can be manufactured at a low cost from the viewpoint of ease of molding. Is possible.
[0023]
  Next, the rotation operation of the seat plate 2 will be described. FIGS. 5A to 5D are side views of the folding chair 1 showing the rotational movement of the seat plate 2. In FIG. 5, the seat plate 2 is indicated by a two-dot chain line in order to clearly show the posture of the seat plate 2 with respect to the seat plate holding member 3. As shown in FIG. 5A, when the seat plate 2 is supported by the seat plate holding member 3 in an upright state, the seat plate 2 is lowered by its weight, and the rotation support shaft 33 is a long hole. The upper end of 24 is locked. At this time, the seat plate 2 tries to rotate in the counterclockwise direction of FIG. 5A using the rotation support shaft 33 as a rotation axis by its weight, but the guide is provided below the rotation support shaft 33. Since the slide movement guide portion 43 a of the member 4 is in contact with and locked to the seat portion 21 of the seat plate 2, the seat plate 2 is held upright on the seat plate holding member 3.
[0024]
  When the folding chair 1 is used, when the seat plate 2 is rotated to a state substantially parallel to the ground, the seat plate 2 is slid upward as shown in FIG. The slide movement guide part 43a of the member 4 and the seat plate 2 are brought into a non-contact state, and the state where the upright state of the seat plate 2 is held by the guide member 4 is released. At this time, the seat plate 2 is lifted upward until the rotation support shaft 33 is engaged with the lower end of the long hole 24.
[0025]
  When the seat plate 2 is lifted and the lower portion of the seat plate 2 is separated from the slide movement guide portion 43a, the seat plate 2 can be rotated counterclockwise as shown in FIG. When the seat plate 2 is rotated, the upper end portion of the seat plate 2 rotates counterclockwise, and the lower end portion of the seat plate 2 rotates counterclockwise around the rotation support shaft 33 as a rotation fulcrum. Move. Thus, when the lower end portion of the seat plate 2 rotates, the rotation direction of the lower end portion of the seat plate 2 is regulated by the rotation operation guide portion 43b of the guide member 4, and thus the seat on the rotation operation guide portion 43b. The lower end of the plate 2 is guided and rotated. The relative positional relationship between the long hole 24 of the seat plate 2 and the rotation support shaft 33 is kept constant. That is, the relative position of the seat plate 2 with respect to the seat plate holding member 3 is maintained so that the state in which the rotation support shaft 33 is locked to the lower end portion of the long hole 24 is maintained.
[0026]
  When the seat plate 2 further rotates counterclockwise, the lower end portion of the seat plate 2 moves away from the upper end of the rotation operation guide portion 43b, and the seat plate 2 rotates to a posture substantially parallel to the ground. As shown in FIG. 5 (d), the lower end portion (the right end portion in FIG. 5 (d)) of the seat plate 2 is engaged with the engaging portion 45 of the guide member 4. In this way, the lower end portion of the seat plate 2 is engaged with the engagement portion 45, so that the seat plate 2 is prevented from rotating counterclockwise, and the seat plate 2 is positioned substantially parallel to the ground. It is held by the holding member 3. In this state, the lower end portion (the right end portion in FIG. 5D) of the seat plate 2 is in a state of approaching the side wall of the seat plate holding member 3, and the seat plate 2 is moved in the horizontal direction. Is limited within a certain range, and the relative position of the seat plate 2 to the seat plate holding member 3 is held.
[0027]
  Thus, according to the folding chair 1 of this embodiment, since the slide movement guide part 43a of the guide member 4 guides the slide movement of the seat board 2 in the vertical direction, the seat board 2 during the slide movement is guided. The posture is stable. Further, the lower part of the seat plate 2 is held by the turning operation guide portion 43b of the guide member 4, and the relative position between the long hole 24 of the seat plate 2 and the turning support shaft 33 is held. During the moving operation, the relative position and posture of the seat plate 2 with respect to the rotation support shaft 33 and the seat plate holding member 3 are stabilized. This eliminates the need for the user to slide and rotate the seat plate 2 while maintaining the stable position and posture, so that the seat plate 2 can be smoothly rotated.
[0028]
  The present invention is not limited to the configuration of the above embodiment, and various modifications can be made. For example, in the above-described embodiment, the guide member 4 is attached to the side portions on both sides in the seat plate holding member 3, but the seat plate 2 is held upright and the seat plate 2 is rotated. If the lower end of the seat plate 2 can be guided at the time, it can be attached only to one of the side portions in the seat plate holding member 3. Thus, when attaching the guide member 4 only to either one of the side parts in the seat board holding member 3, it is sufficient by enlarging a contact surface with the seat board 2 rather than the case shown in the said FIG. It is desirable to maintain the upright posture of the seat plate 2 and to guide the rotational movement of the seat plate 2. However, when the guide member 4 is attached to both side portions in the seat plate holding member 3, the posture of the seat plate 2 with respect to the rotation support shaft 33 and the seat plate holding member 3 can be further stabilized.
[0029]
  Next, a folding chair according to a second embodiment of the present invention will be described. FIG. 6 is a perspective view of a folding chair according to the second embodiment in which the seat plate is held in an upright state when not in use, and FIG. 7 is a second embodiment in which the seat plate is substantially parallel to the ground when in use. It is a figure which shows the folding chair which concerns on. The folding chair 100 according to the second embodiment of the present invention includes a seat plate 12 for a user to sit on and a seat plate holding member 13 that rotatably supports the seat plate 12. Similarly to the folding chair 1 according to the first embodiment, when the folding chair 100 is not used, the seat plate 12 is held in the upright posture by the seat plate holding member 13 (FIG. 6), and when used, the seat plate 12 is held against the ground. And rotated to a substantially parallel posture (FIG. 7). Since the outline of the structure of the folding chair 100 is the same as that of the folding chair 1, the following mainly describes differences from the folding chair 1.
[0030]
  The seat plate 12 is provided with a hole portion 122 in the side portion on the near side when the seat plate holding member 13 is held in an upright state, and a user puts a finger into the hole portion 122 when the seat plate 12 is used. The seat plate 12 can be rotated to the near side by inserting. Further, a rotation support shaft 133 that fits into the long holes 124 on both side portions of the seat plate 12 and pivotally supports the seat plate 12 is attached to the guide member 14, and the guide member 14 holds the seat plate. By fixing to the member 13 with screws 200, the seat plate 12 is rotatably held by the seat plate holding member 13.
[0031]
  FIG. 8 is a perspective view of the seat plate holding member 13. The seat plate holding member 13 is installed by being embedded in a wall surface or the like. Only the exposed portion 132 is exposed from the wall surface or the like, and the seat plate storage portion 134 other than the exposed portion 132 is installed not to be exposed from the wall surface or the like. The Therefore, after the folding chair 100 is installed on the wall surface or the like, only the exposed portion 132 of the seat plate holding member 13 and a part of the guide member 14 are exposed from the wall surface or the like.
[0032]
  The seat plate holding member 13 supports the outer frame 135 composed of the exposed portion 132 and the seat plate storage portion 134 and the side surface portion of the seat plate 12 in the upright posture and plays a role of reinforcing the outer frame 135. And a decorative plate 137 (FIG. 7) attached to the crosspiece member 136.
[0033]
  The outer frame 135 of the seat plate holding member 13 is provided with a recess 135a for fitting the guide member 14 therein. The recess 135a is provided on the inner wall of the seat plate holding member 13, and is provided below the center in the height direction of the inner wall. The recess 135a is shaped to match the outer shape of the guide member 14, and a pin insertion port 135b for attaching and fixing the guide member 14 to the recess 135a is provided therein.
[0034]
  FIG. 9A is a perspective view of the guide member 14, and FIG. 9B is a perspective view of the guide member 14 viewed from an angle different from that of FIG. The guide member 14 (1) pivotally supports the seat plate 12 by a pivot support shaft 133 (FIG. 6) fitted into a hole 147 penetrating from one side surface portion to the other side surface portion. (2) A function for guiding the rotation operation of the lower end portion of the seat plate 12 so as to maintain the relative position between the long hole 124 (FIG. 7) and the rotation support shaft 133 when the seat plate 12 is rotated. Have
[0035]
  The guide member 14 is fitted into the recess 135a of the seat plate holding member 13 and attached to the mounting portion 141. The guide member 14 is engaged with the seat plate 12, and the seat plate 12 is tilted (described later). To the seat plate 12 when the seat plate 12 is pivoted to a posture substantially parallel to the ground. And a locking portion 145 for holding the plate 12. When the guide member 14 is attached to the recess 135a, the upper surface of the locking portion 145 comes into contact with the lower surface portion of the crosspiece member 136. Further, a groove portion 146 extending in the insertion / removal direction of the guide member 14 with respect to the recess portion 135a is provided on the upper surface portion of the guide member 14, and a projection portion (not shown) provided in the groove portion 146 and the recess portion 135a. As a result, the insertion direction of the guide member 14 into the recess 135a is determined, and the guide member 14 is positioned relative to the recess 135a in the direction orthogonal to the insertion direction. A hole 148 for inserting a screw 200 (FIGS. 6 and 7) is provided in the vicinity of the upper end and the lower end of the front portion of the guide member 14. The screw 200 passes through the hole 148 and is inserted into the insertion port 135b in the recess 135a.
[0036]
  Similar to the guide part 43 of the folding chair 1 (the first embodiment), the guide part 143 is in surface contact with the lower part of the seat part 121 of the seat board 12 when the seat board 12 is in an upright state. A slide movement guide portion 143a that guides the sliding movement of the seat plate 12 in the vertical direction, and a rotation that contacts the lower end portion of the seat plate 12 when the seat plate 12 rotates and guides the rotation operation of the seat plate 12 And an operation guide 143b.
[0037]
  At least the slide movement guide portion 143a is formed of a material having elasticity. The slide movement guide part 143a is not fixed to the attachment part 141, and only the rotation operation guide part 143b is fixed to the attachment part 141. The slide movement guide part 143a is not provided with the support part 44 provided in the folding chair 1 (first embodiment), and the slide movement guide part 143a remains in a state where the seat plate 12 is held in the upright posture. The seat plate 12 can be made into an inclined posture by elastic deformation. Thereby, the slide movement guide part 143a slides the inclined seat plate 12 in the upper end side direction, and guides the slide movement direction.
[0038]
  The elastic deformation amount (predetermined amount) of the slide movement guide portion 143a is set so that the seat plate 12 can move to a position where the upper end portion thereof escapes from the seat plate holding member 13 covering the upper portion. The seat plate holding member 13 is located directly above the sliding plate so that the sliding movement can be performed. Further, the elastic force of the slide movement guide portion 143a can hold the seat plate 12 in an upright position by locking with the seat plate 12 when not in use, and the user pulls the hole portion 122 of the seat plate 12 forward. Is set to a force that can be elastically deformed.
[0039]
  In addition, the material of the guide member 4 is not specifically limited, If it is the material which has the said elastic force, it can be comprised with a metal, a synthetic resin, etc. In addition, the guide member 14 has a pivot support shaft 133 attached to the guide member 14, and the pivot support shaft 133 is fitted into the elongated hole 124 of the seat plate 12, so that the seat plate 12 is pivotably attached to the guide member 14. After being assembled in the state, it is attached to the seat plate holding member 13 together with the seat plate 12.
[0040]
  Next, the rotation operation of the seat plate 12 will be described. FIGS. 10A, 10 </ b> B, 10 </ b> C, and 11 </ b> D and 11 </ b> E are side views of the folding chair 100 showing the rotation operation of the seat plate 12. 10 and 11, the seat plate 12 is indicated by a two-dot chain line in order to clearly show the posture of the seat plate 12 with respect to the seat plate holding member 13. As shown in FIG. 10A, when the seat plate 12 is supported by the seat plate holding member 13 in an upright state, the seat plate 12 is lowered by its weight, and the rotation support shaft 133 is a long hole. The upper end of 124 is locked. At this time, the seat board 12 is held in an upright posture on the seat board holding member 13 as in the case of the folding chair 1 (first embodiment) by contact and locking with the slide movement guide portion 143a.
[0041]
  When the folding chair 100 is used, when the seat plate 12 is rotated to a state substantially parallel to the ground, the seat plate 12 is in the upright posture, and the rotation support shaft 133 is locked to the upper end portion of the long hole 124. 10 (a state shown in FIG. 10 (a)), a finger is inserted into the hole 122 and the seat plate 12 is brought down to the near side (left side in FIG. 10 (a)). Tilt as shown. Since the slide movement guide portion 143a is configured to be elastically deformable, it is elastically deformed according to the inclination of the seat plate 12. As a result, the upper end portion of the seat plate 12 is separated from the seat plate holding member 13 so that the seat plate holding member 13 does not exist above the upper end portion of the seat plate 12.
[0042]
  After the seat plate 12 is tilted as described above, the user lifts the seat plate 12 in the tilted state toward the upper end side and moves upward while sliding the side surface of the seat plate 12 with respect to the slide movement guide portion 143a. (See FIG. 10C). At this time, the slide movement guide part 143a is elastically deformed according to the inclination of the seat plate 12, and guides the slide movement of the seat plate 12 in the upper end side direction. Then, the slide movement guide portion 143a and the seat plate 12 are brought into a non-contact state, and the state where the upright state of the seat plate 12 is held by the guide member 14 is released. At this time, the seat plate 12 is lifted upward until the rotation support shaft 133 is engaged with the lower end of the long hole 124.
[0043]
  When the seat plate 12 is slid in the direction toward the upper end portion of the seat plate 12 and the lower end portion of the seat plate 12 is separated from the slide movement guide portion 143a, the seat plate 12 is rotated counterclockwise as shown in FIG. It becomes possible to turn in the direction. When the seat plate 12 is rotated, the upper end portion of the seat plate 12 is rotated counterclockwise, and the lower end portion of the seat plate 12 is also rotated counterclockwise using the rotation support shaft 133 as a rotation fulcrum. Move. Thus, as in the case of the folding chair 1, when the seat plate 12 is rotated, the lower end portion of the seat plate 12 is guided by the rotation operation guide portion 143b in the rotation direction, and the elongated hole 124 of the seat plate 12 is provided. And the rotational support shaft 133 are kept in a constant relative positional relationship. In addition, after the lower end part of the seat board 12 leaves | separates from the slide movement guide part 143a, the slide movement guide part 143a restore | restores to an original shape with the elastic force.
[0044]
  When the seat plate 12 further rotates counterclockwise, the lower end portion of the seat plate 12 moves away from the upper end of the rotation operation guide portion 143b, and the seat plate 12 rotates to a posture substantially parallel to the ground. 11 (e) and FIG. 7, the lower end portion (the right end portion in FIG. 11 (e)) of the seat plate 12 is engaged with the engaging portion 145 of the guide member 14. Thereby, the counterclockwise rotation of the seat plate 12 is suppressed, and the seat plate 12 is held by the seat plate holding member 13 in a posture substantially parallel to the ground.
[0045]
  As described above, according to the folding chair 100 according to the second embodiment, the slide movement guide portion 143a is elastically deformed to incline the seat plate 12 held in the upright posture by a predetermined amount, and then incline. Since the seat plate 12 in the state can be slid and moved in the direction toward the upper end, the seat plate can be provided without providing a space for sliding movement just above the seat plate 12 held in the upright posture. 12 can be slid. As a result, as shown in FIG. 6, even when the upper portion of the seat plate 12 is covered with the seat plate holding member 13, the seat plate 12 is slid upward to move the slide movement guide portion 143a. And the seat plate 12 can be rotated.
[0046]
【The invention's effect】
  As described above, according to the present invention, since the slide movement of the seat plate is guided by the slide movement guide unit, the posture of the seat plate during the slide movement is stabilized. Further, the rotation operation guide part guides the rotation operation of the lower portion of the seat plate, and the relative position between the long hole of the seat plate and the rotation support shaft is maintained. The relative position of the seat plate with respect to the shaft and the seat plate support member is stabilized. This eliminates the need for the user to slide and rotate the seat plate while keeping the seat plate in a stable position and posture, so that the seat plate can be smoothly rotated. it can.
[0047]
  Further, in the folding chair according to the present invention, the seat plate is held in an upright posture by being locked with the slide movement guide portion, and is configured to be rotatable when detached from the slide movement guide portion, and a member such as a spring. The upright posture of the seat plate is held and rotated without using the. Therefore, since the upright posture of the seat plate is maintained and rotated without using any deformable / expandable parts, it is not necessary to use parts that are worn out or damaged, and the product life of the folding chair can be extended. In addition, in the conventional folding chair that is configured to maintain the upright posture of the seat plate using the elasticity of the pull spring or the like and stabilize the turning posture, when the seat plate is rotated, Since the seat plate tends to return to the upright posture due to the elastic force, there is a risk that a finger or the like may be pinched between the seat plate and the seat plate holding member, but the folding chair according to the present invention has a member such as a spring. Since it is not used, it exhibits excellent safety.
[0048]
  In addition, when the slide movement guide unit and the rotation operation guide unit are configured by a single member having a curved shape that matches the operation of the lower part of the seat plate, When it is configured to be attached to the seat plate holding member so as to be in contact with the vicinity of the portion, it is possible to guide the slide movement operation and the rotation operation of the seat plate with a simple structure without requiring a complicated structure. Further, by changing the shapes of the slide movement guide portion and the rotation operation guide portion, the slide movement operation and rotation operation guide of the seat plate can be easily made to correspond to the shape and operation of the lower portion of the seat plate.
[0049]
  In addition, the sliding movement guide part is elastically deformed, so that the seat plate held in the upright posture isThe seat plate is tilted to a position where it escapes from the seat plate holding member covering the upper side,If it is configured to be slidable in the direction of its upper end, the seat plate can be slid and moved even if there is no space for slide movement directly above the seat plate held in an upright position. It becomes possible to make a board into a rotatable state.
[0050]
  Even when the seat plate holding member is configured to cover and store at least part of the upper and side portions of the seat plate that is held in the upright posture by the slide movement guide unit, the seat plate is kept upright. The seat plate can be slid by avoiding the portion where the seat plate holding member covers the upper portion of the seat plate by inclining a predetermined amount from the state held in the posture and sliding it in the upper end side direction. Thereby, in order to save space, a configuration in which the upper and lower parts of the seat plate are accommodated in the seat plate holding member is adopted, and even if it is not possible to provide a space for sliding movement directly above the seat plate. Thus, the sliding movement of the seat plate can be performed smoothly.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a folding chair according to the present invention, and shows a state in which a seat plate is held in an upright state.
FIG. 2 is a perspective view showing the folding chair according to the present invention, and shows the folding chair in a state in which the seat plate is in a posture substantially parallel to the ground.
FIG. 3 is an exploded perspective view of the folding chair.
FIG. 4 is a perspective view showing a guide member of the folding chair.
FIGS. 5A to 5D are side views of a folding chair showing a pivoting operation of a seat plate.
FIG. 6 is a perspective view showing a folding chair according to a second embodiment of the present invention, and shows a state in which a seat plate is held in an upright state when not in use.
FIG. 7 is a perspective view showing a folding chair according to a second embodiment of the present invention, and shows the folding chair in a state where the seat plate is in a posture substantially parallel to the ground.
FIG. 8 is a perspective view of a seat plate holding member.
9A is a perspective view of the guide member, and FIG. 9B is a perspective view of the guide member viewed from an angle different from that of FIG. 9A.
FIGS. 10A to 10C are side views of a folding chair according to a second embodiment showing a pivoting operation of a seat plate.
11 (d) and 11 (e) are side views of the folding chair according to the second embodiment showing the pivoting operation of the seat plate.
[Explanation of symbols]
  1,100 folding chair
  2,12 Seat plate
  24,124 long hole
  3,13 Seat plate holding member
  33,133 Rotating support shaft
  4,14 Guide member
  43,143 Guide
  43a, 143a Slide movement guide part
  43b, 143b Rotation motion guide part

Claims

When not in use, the seat plate is held by the seat plate holding member in an upright posture, and the seat plate can be rotated by sliding the seat plate upward from this posture, so that the seat plate is substantially parallel to the ground. In the folding chair to be used by rotating,
A pivot support shaft attached to the seat plate holding member so as to engage with a long hole formed in a side surface portion on both sides of the seat plate so as to be relatively movable;
A slide that is in surface contact with a flat seat portion provided on the seat plate, holds the seat plate in an upright position by being locked with the seat portion, and guides the slide movement upward of the seat plate. A travel guide,
When the seat plate in the slide upward movement of the seat plate by the guide of the sliding guide portion becomes rotatable disengaged from the sliding guide portion, the rotary and the long hole when the rotation to hold the relative position of the turning support shaft, Ori Ri fold chair and a rotational movement guide portion for guiding the seat plate lower in the rotational motion.

The sliding guide portion and the rotating operation guide portion, folding chair according to 請 Motomeko 1 that consists in one piece with the combined curved shape in the seat plate bottom operation.

The sliding guide portion and the rotating operation guide portion, folding chair according to 請 Motomeko 2 that is attached to the seat plate holding member so as to abut against the corner portion near the seat plate bottom.

The seat plate is attached to the seat plate holding member in a state where the upper end of the seat plate is covered with the seat plate holding member,
Position the sliding guide portion, said seat plate, while holding the seat portion and the surface contact to upright, the upper end of the seat plate, to escape from the seat plate holding member for covering the upper side until elastically deformed tilted the seat plate, the seat plate in a state of the inclination, according to any one of the upper end 請 Motomeko 1 to claim 3 directions that are configured to sliding movement of Folding chair.

The seat plate holding member can be embedded in a wall surface or the like, and is configured to cover and store at least a part of an upper portion and a side portion of the seat plate in an upright posture held by the slide movement guide portion. folding chair according to Tei Ru請 Motomeko 4.