JP3584215B2 - Bearings such as foldable tables and chairs - Google Patents

Description

【０００１】
【発明の属する技術分野】
本発明は、折り畳み可能なテーブルや椅子などの支承体に関するものである。
【０００２】
【従来の技術及び発明が解決しようとする課題】
従来から、例えばキャンプ場などのアウトドアで使用され、持ち運びや収納に便利な折り畳み可能なテーブルや椅子が種々提案されている。
【０００３】
本出願人は、これらの折り畳み可能なテーブルや椅子に着目し、従来にない構造から良好な使用状態及び折り畳み状態が得られ、しかも、簡易構造故に量産面及びコスト面においても秀れることになるなど、極めて商品価値の高い画期的な折り畳み可能なテーブルや椅子などの支承体を発明した。
【０００４】
【課題を解決するための手段】
添付図面を参照して本発明の要旨を説明する。
【０００５】
二つ折り重合する左右の支承部材１の裏面の突き合わせ側前後に夫々脚取付部２を設け、この左右の脚取付部２を夫々枢着連結して前記左右の支承部材１を突き合わせ連結し、前記脚取付部２に夫々脚部３を枢着し、前記左右の支承部材１を垂下回動し前記脚部３を挟むようにして折り畳み重合し得るように構成した折り畳み可能なテーブルや椅子などの支承体において、バネ性を有する一対のコ字状線材４の架設杆部４Ａを前記支承部材１同志の突き合わせ縁５と交差するように前記支承部材１裏面に沿設配設し、前後の垂下杆部４Ｂの端部を夫々前後対角状に対向する前記脚部３に連結して、このコ字状線材４の架設杆部４Ａ同志をＸ状に前記支承部材１裏面に配して前後対角状に対向する前記脚部３同志を夫々連結し、このコ字状線材４の支承部材１裏面方向へのスライドをガイドするガイド部６を前記脚取付部２に夫々設け、前記左右の支承部材１を折り畳み重合若しくは左右の脚部３を重合させることで、前記左右の支承部材１の回動と共に前記コ字状線材４はねじれを生じこのねじれ復帰力に抗して前記ガイド部６に沿って突き合わせ縁５側にスライド移動すると共に、前記左右の支承部材１を垂下回動させることで前記ねじれ復帰力は支承部材１に働かず、前記脚部３を挟んで前記支承部材１を折り重合した状態が保持されるように構成したことを特徴とする折り畳み可能なテーブルや椅子などの支承体に係るものである。
【０００６】
また、前記コ字状線材４に係る垂下杆部４Ｂの先端を折曲し、この折曲部４Ｂ’を前後対角状に対向する脚部３夫々に枢着して、コ字状線材４を当該脚部３同志間に架設連結したことを特徴とする請求項１記載の折り畳み可能なテーブルや椅子などの支承体に係るものである。
【０００７】
また、前記脚取付部２夫々に設けたガイド部６に、コ字状線材４の支承部材１裏面方向にして支承部材１の外縁方向へのスライド移動を規制するスライド規制部７を設けたことを特徴とする請求項１，２のいずれか１項に記載の折り畳み可能なテーブルや椅子などの支承体に係るものである。
【０００８】
【発明の実施の形態】
好適と考える本発明の実施の形態（発明をどのように実施するか）を、図面に基づいてその作用効果を示して簡単に説明する。
【０００９】
本発明は、左右の支承部材１を折り畳み重合若しくは左右の脚部３を重合させると、左右の支承部材１の回動と共にコ字状線材４はねじれを生じ、且つ、このねじれ復帰力に抗して前記ガイド部６に沿って突き合わせ縁５側にスライド移動することになり、そして、前記左右の支承部材１を垂下回動させることで前記ねじれ復帰力は支承部材１に働かない状態となり、前記脚部３を挟んで前記支承部材１を折り重合した状態が保持される。
【００１０】
ところで、本発明は、前述したように、この左右の支承部材１を開き方向へ付勢する付勢力をコ字状線材４により得ている。具体的には、バネ性を有する一対のコ字状線材４の架設杆部４Ａを前記支承部材１同志の突き合わせ縁５と交差するように前記支承部材１裏面に沿設配設し、前後の垂下杆部４Ｂの端部を夫々前後対角状に対向する前記脚部３に連結して、このコ字状線材４の架設杆部４Ａ同志をＸ状に前記支承部材１裏面に配して前後対角状に対向する前記脚部３同志を夫々連結しており、この左右の支承部材１の回動に伴うコ字状線材４のねじれ復帰力を当該支承部材１を開き方向へ付勢する付勢力とし、更に、このねじれ復帰力は、左右の支承部材１を垂下回動させることで支承部材１に働かない状態となるように構成されている。
【００１１】
従って、このコ字状線材４を使用した従来にない画期的な構造を採用することにより、折り畳み構造を備えた支承体における良好な使用状態（左右の支承部材１を開いた状態）及び折り畳み状態（左右の支承部材１を閉じた状態）が確実に得られることになる。
【００１２】
【実施例】
図１〜１０は本発明の第一実施例、図１１は第二実施例であり、以下に説明する。
【００１３】
第一実施例について説明する。
【００１４】
第一実施例は、左右の支承部材１を垂下回動することで脚部３を挟むようにして折り畳み重合し得るように構成したものである。尚、第一実施例では折り畳み構造を具備する支承体としてテーブルを採用しているが、本実施例の特性を発揮し得る構成であれば例えば載置台などその応用範囲は多岐に亙るものである。
【００１５】
具体的には、図１，２に図示したように一対の支承部材１としてのテーブル板の裏面の突き合わせ側前後位置（４カ所）に夫々脚取付部２が設けられている。
【００１６】
この脚取付部２は、図２に図示したように適宜な金属製の板材で構成したものであり、その一端縁には第一垂下片８が形成され、この第一垂下片８には後述する脚部３が枢着されている。従って、テーブル板１と脚部３とは互いに相対回動自在となる（図３，４参照）。
【００１７】
また、第一垂下片８は、テーブル板１夫々の突き合わせ縁５同志を突き合わせた状態において、対向する他の脚取付部２に係る第一垂下片８と重合枢着されている。従って、左右のテーブル板１は、この脚取付部２同志の枢着連結により垂下回動（互いに相対回動）して二つ折り重合可能となり、この際、脚部３もテーブル板１に対して回動自在である為、テーブル板１同志で脚部３を挟んだ状態とすることができる（図３，４参照）。
【００１８】
また、脚取付部２は、前記第一垂下片８が形成された側と対向する他端縁に第二垂下片９が形成され、この第二垂下片９には後述するコ字状線材４をガイドするガイド部６が設けられている。
【００１９】
このガイド部６は、図２，９，１０に図示したように第二垂下片９に所定長さの孔６ａを形成して構成されており、左右のテーブル板１を開閉させた際、この孔６ａ内をコ字状線材４が脚部３の回動に伴いテーブル板１裏面方向にして左右のテーブル板１の突き合わせ縁５側及びその反対側へスライド移動し得るように構成されている。
【００２０】
また、ガイド部６は、その長さを、脚部３の開き回動に伴いコ字状線材４がテーブル板１の突き合わせ縁５側と反対の外縁側へ十分にスライド移動して左右の脚部３が安定した開き状態（正面から見てハの字状態）となる長さに設定されている。
【００２１】
また、ガイド部６は、その外側端部が閉塞されてコ字状線材４のスライド移動を規制するスライド規制部７として構成されている。このスライド規制部７は、テーブル板１を開き状態とした際、コ字状線材４が当接することで該コ字状線材４に左右のテーブル板１を支持する支持機能を発揮させるものである。
【００２２】
また、ガイド部６は、その内側端部に巾広部６ｂが形成されており、この巾広部６ｂは、左右のテーブル板１を垂下回動させて脚部３を挟んで折り重合させた際、コ字状線材４のねじれ復帰力を十分に作用させない空間として構成されている。
【００２３】
脚部３は、図１〜４に図示したように適宜な金属製のパイプ材10をコ字状に形成して構成したものであり、この各脚部３夫々の上端部は脚取付部２に係る第一垂下片８に枢着連結されている。
【００２４】
また、この各脚部３は、その内面部に孔10ａが形成され、この孔10ａはコ字状線材４に設けられる折曲部４Ｂ’を嵌挿して枢着連結するためのものである。
【００２５】
コ字状線材４は、図１〜５に図示したように適宜な金属製の部材を形成したものであり、架設杆部４Ａと、この架設杆部４Ａの左右位置に折曲形成される垂下杆部４Ｂとで構成され、一対のコ字状線材４を、架設杆部４Ａ同志をＸ状にして前記テーブル板１裏面（脚取付部２のガイド部６）に配し、且つ、各垂下杆部４Ｂを前後対角状に対向する前記脚部３に枢着しており、当該一対のコ字状線材４により前後対角状に対向する脚部３同志を連結している（尚、図５に図示したように一対のコ字状線材４同志は後述する左右の垂下杆部４Ｂにおけるねじれ方向を互いに同一方向には設定されておらず、夫々別の作用を発揮する別部品として構成されている。）。左右の垂下杆部４Ｂ夫々の先端部には折曲部４Ｂ’が形成され、この折曲部４Ｂ’を脚部３に設けた孔10ａに嵌挿して枢着連結し得るように構成されている。
【００２６】
従って、この各脚部３に連結されてＸ状に配されるコ字状線材４同志の開き度合いは脚部３の開閉回動に伴い可変し、このコ字状線材４同志の開き移動が限界に達した際、つまり、脚取付部２のガイド部６に沿って移動するコ字状線材４のスライド移動がスライド規制部７により規制されることで脚部３の開放方向への回動が制限される。
【００２７】
また、各コ字状線材４に係る左右の垂下杆部４Ｂは、互いに逆方向にねじれた関係に設定され、このコ字状線材４を前後対角状に対向する脚部３同志間に組み付けた際、各コ字状線材４のねじれ復帰力が左右のテーブル板１を押し広げる付勢力を発揮するように構成されている。
【００２８】
具体的には、本実施例は、図６，７に図示したようにコ字状線材４に係る左右の垂下杆部４Ｂにおける脚部３との連結部位にて図中矢印ａ，ｂ方向（脚部３の開放方向）へ同時に力が加わることでコ字状線材４全体がねじれ、このコ字状線材４のねじれ復帰力により、コ字状線材４が前後対角状に対向するガイド部６のスライド規制部７を図中矢印ａ’，ｂ’方向へ押し込むことになりテーブル板１を開放させる力（開放状態を保持する力）が生じることになる。
【００２９】
また、本実施例は、左右のテーブル板１を閉じ回動させて折り畳み重合若しくは左右の脚部３を閉じ回動させて重合させた際、コ字状線材４から生じるねじれ復帰力は所定の回動範囲内においてはテーブル板１を開いた状態となるように付勢するように構成され、当該回動範囲を超えて更に左右のテーブル板１を垂下回動させると、ガイド部６に対してコ字状線材４が突き合わせ縁５側にスライド移動してＸ状のコ字状線材４同志の開き角度が狭くなるとともに、ねじれ復帰力が徐々に作用しにくい環境となり、即ち、各コ字状線材４に対するガイド部６の連設位置（当接位置）が該コ字状線材４の中央寄り位置となることで力のかかる方向が変化してねじれ復帰力がテーブル板１を押し上げる力として機能しにくくなり、よって、当該ねじれ復帰力はテーブル板１に十分に働かず、前記脚部３を挟んで前記テーブル板１を折り重合した状態が保持されるように構成されている（図８参照）。
【００３０】
本実施例は上述のように構成したから、左右のテーブル板１を折り畳み重合若しくは左右の脚部３を重合させると、左右のテーブル板１の回動と共にコ字状線材４はねじれを生じ、且つ、このねじれ復帰力に抗してガイド部６に沿って突き合わせ縁５側にスライド移動することになり、そして、左右のテーブル板１を垂下回動させることで前記ねじれ復帰力はテーブル板１に働かない状態となり、前記脚部３を挟んで前記テーブル板１を折り重合した状態が保持される。
【００３１】
よって、本実施例によれば、コ字状線材４を使用した従来にない画期的な構造を採用することにより、折り畳み構造を備えたテーブルにおける良好な使用状態（左右のテーブル板１を開いた状態）及び折り畳み状態（左右のテーブル板１を閉じた状態）が確実に得られることになる。
【００３２】
次に、第二実施例について説明する。
【００３３】
第二実施例は、図１１に図示したように左右の支持部材１としての座板（クッション）を垂下回動することで脚部３を挟むようにして折り畳み重合し得る椅子として構成した場合であり、第一実施例と同様の折り畳み構造（コ字状線材４を利用した折り畳み構造）を具備せしめている。
【００３４】
その余は第一実施例と同様である。
【００３５】
【発明の効果】
本発明は上述のように構成したから、折り畳み構造を備えた支持体における良好な使用状態（左右の支持部材を開いた状態）及び折り畳み状態（左右の支持部材を閉じた状態）が確実に得られることになり、しかも、簡易構造故に量産面及びコスト面においても秀れることになるなど極めて商品価値の高い画期的な折り畳み可能なテーブルや椅子などの支承体となる。
【００３６】
また、請求項２記載の発明においては、前記請求項１記載の発明の作用効果に加え、より簡易構造となり量産面及びコスト面において秀れることになるなど極めて商品価値の高い画期的な折り畳み可能なテーブルや椅子などの支承体となる。
【００３７】
また、請求項３記載の発明においては、前記請求項１，２記載の発明の作用効果に加え、コ字状線材のスライド移動を規制することで、テーブル板及び脚部の開いた状態を確実に保持して良好な使用状態が得られることになるなど極めて商品価値の高い画期的な折り畳み可能なテーブルや椅子などの支承体となる。
【図面の簡単な説明】
【図１】第一実施例を示す斜視図である。
【図２】第一実施例を示す斜視図である。
【図３】第一実施例を示す正面図である。
【図４】第一実施例の概略動作説明図である。
【図５】本実施例に係る要部の説明図である。
【図６】本実施例に係る要部の説明図である。
【図７】第一実施例を説明する底面図である。
【図８】第一実施例の概略動作説明図である。
【図９】第一実施例に係る要部の概略動作説明図である。
【図１０】本実施例に係る要部の概略動作説明図である。
【図１１】第二実施例を示す斜視図である。
【符号の説明】
１ 支承部材
２ 脚取付部
３ 脚部
４ コ字状線材
４Ａ 架設杆部
４Ｂ 垂下杆部
４Ｂ’ 折曲部
５ 突き合わせ縁
６ ガイド部
７ スライド規制部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a support such as a foldable table or chair.
[0002]
Problems to be solved by the prior art and the invention
2. Description of the Related Art Conventionally, various foldable tables and chairs that are used outdoors, such as campsites, and are convenient for carrying and storing have been proposed.
[0003]
By paying attention to these foldable tables and chairs, the present applicant can obtain a good use state and a foldable state from an unconventional structure, and because of its simple structure, it will be excellent in mass production and cost. Invented a revolutionary foldable support such as a foldable table or chair that has a very high commercial value.
[0004]
[Means for Solving the Problems]
The gist of the present invention will be described with reference to the accompanying drawings.
[0005]
Leg mounting portions 2 are provided on the back side of the left and right bearing members 1 which are folded in two, respectively, on the front and rear sides, and the left and right leg mounting portions 2 are pivotally connected to each other, and the left and right supporting members 1 are butt connected. A support member such as a foldable table or chair, which is configured such that the leg portion 3 is pivotally attached to the leg attachment portion 2 and the left and right support members 1 are turned downward to be able to be folded and overlapped with the leg portion 3 therebetween. in the bearing member 1沿設disposed on the rear surface so as to intersect the erection rod portion 4A of the pair of U-shaped wire 4 that have a spring characteristic and said supporting member 1 abutting edge 5 comrades, before and after the droop The ends of the rods 4B are connected to the legs 3 facing each other diagonally in the front-rear direction, and the bridging rods 4A of the U-shaped wire 4 are arranged in an X-shape on the back surface of the support member 1 and The legs 3 which are diagonally opposed to each other are connected to each other to form a U-shaped wire. The left and right support members 1 are provided with guide portions 6 for guiding the slide of the support member 1 in the rear direction, respectively, and the left and right support members 1 are folded and overlapped or the left and right leg portions 3 are overlapped. With the rotation of the member 1, the U-shaped wire 4 is twisted and slides toward the butt 5 along the guide portion 6 against the torsion restoring force, and the right and left support members 1 are suspended downward. The foldable table is characterized in that the torsion restoring force does not act on the support member 1 by being moved, and the support member 1 is held in a state where the support member 1 is folded and overlapped with the leg portion 3 interposed therebetween. It relates to a support such as a chair.
[0006]
Further, the distal end of the hanging rod portion 4B of the U-shaped wire 4 is bent, and the bent portion 4B 'is pivotally attached to each of the legs 3 facing each other diagonally in the front-rear direction. 2. The support according to claim 1, wherein the support members are connected between the legs 3.
[0007]
Also, the guide portions 6 provided on each of the leg attachment portions 2 are provided with a slide restricting portion 7 for regulating the U-shaped wire 4 toward the back surface of the support member 1 and restricting the slide movement of the support member 1 in the outer edge direction. The present invention relates to a support such as a foldable table or chair according to any one of claims 1 and 2.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.
[0009]
According to the present invention, when the left and right support members 1 are folded and overlapped or the left and right leg portions 3 are overlapped, the U-shaped wire 4 twists with the rotation of the left and right support members 1 and resists this torsion return force. Then, it slides toward the butting edge 5 side along the guide portion 6, and the left and right support members 1 are turned downward so that the torsional return force does not act on the support member 1, The state where the support member 1 is folded and overlapped with the leg portion 3 therebetween is maintained.
[0010]
In the present invention, the urging force for urging the left and right support members 1 in the opening direction is obtained by the U-shaped wire 4 as described above. Specifically,沿設disposed erection rod portion 4A of the pair of U-shaped wire 4 on the supporting member 1 back surface so as to intersect the abutting edge 5 of the bearing member 1 each other that have a spring property, Ends of the front and rear hanging rods 4B are connected to the legs 3 facing each other diagonally in the front and rear directions, and the connecting rods 4A of the U-shaped wire 4 are arranged in an X shape on the back surface of the support member 1. The leg portions 3 opposing each other diagonally in the front-rear direction are connected to each other, and the torsional return force of the U-shaped wire 4 caused by the rotation of the left and right support members 1 is used to open the support member 1 in the opening direction. The torsion restoring force is configured so as not to act on the support member 1 by rotating the right and left support members 1 downward.
[0011]
Therefore, by adopting an innovative structure using the U-shaped wire 4 which has not existed in the related art, a good use state (a state in which the left and right support members 1 are opened) and a folding state in the support body having the folding structure are provided. The state (the state where the left and right support members 1 are closed) can be reliably obtained.
[0012]
【Example】
1 to 10 show a first embodiment of the present invention, and FIG. 11 shows a second embodiment, which will be described below.
[0013]
A first embodiment will be described.
[0014]
In the first embodiment, the left and right support members 1 are configured to be able to be folded and overlapped so as to sandwich the leg 3 by rotating the support member 1 vertically. In the first embodiment, a table is adopted as a support having a folding structure. However, as long as the structure can exhibit the characteristics of the present embodiment, for example, a mounting table and the like can be used in a wide range of applications. .
[0015]
Specifically, as shown in FIGS. 1 and 2, leg attachment portions 2 are provided at front and rear positions (four locations) on the back side of the table plate as a pair of support members 1, respectively.
[0016]
The leg attachment portion 2 is made of a suitable metal plate as shown in FIG. 2, and has a first hanging piece 8 formed at one end edge thereof. Leg 3 is pivotally mounted. Therefore, the table plate 1 and the leg 3 are relatively rotatable relative to each other (see FIGS. 3 and 4).
[0017]
Further, the first hanging piece 8 is overlapped with the first hanging piece 8 of the other opposing leg mounting portion 2 in a state where the butting edges 5 of the respective table boards 1 abut each other. Accordingly, the left and right table boards 1 can be vertically rotated (relatively rotated relative to each other) by the pivotal connection of the leg mounting portions 2 and can be folded in two. Since it is rotatable, the legs 3 can be sandwiched between the table boards 1 (see FIGS. 3 and 4).
[0018]
Further, the leg attachment portion 2 has a second hanging piece 9 formed at the other end edge facing the side on which the first hanging piece 8 is formed, and the second hanging piece 9 has a U-shaped wire 4 described later. Is provided.
[0019]
The guide portion 6 is formed by forming a hole 6a of a predetermined length in the second hanging piece 9 as shown in FIGS. 2, 9, and 10, when the left and right table boards 1 are opened and closed. The U-shaped wire 4 is configured to be able to slide in the hole 6a toward the butting edge 5 of the left and right table boards 1 and the opposite side with the rotation of the leg portion 3 toward the back side of the table board 1. .
[0020]
In addition, the U-shaped wire 4 slides sufficiently to the outer edge side opposite to the butting edge 5 side of the table plate 1 with the opening rotation of the leg portion 3 so that the length of the left and right The length is set such that the portion 3 is in a stable open state (C-shape viewed from the front).
[0021]
The guide portion 6 is configured as a slide restricting portion 7 whose outer end is closed to restrict the slide movement of the U-shaped wire 4. When the table plate 1 is opened, the slide regulating portion 7 causes the U-shaped wire 4 to perform a supporting function of supporting the left and right table plates 1 by contacting the U-shaped wire 4. .
[0022]
Further, the guide portion 6 has a wide portion 6b formed at an inner end thereof. The wide portion 6b is formed by rotating the left and right table boards 1 down and down and folding the leg portions 3 therebetween. At this time, it is configured as a space in which the torsional return force of the U-shaped wire 4 does not sufficiently act.
[0023]
The legs 3 are formed by forming an appropriate metal pipe member 10 in a U-shape as shown in FIGS. 1 to 4, and the upper end of each leg 3 is attached to the leg mounting portion 2. Is pivotally connected to the first hanging piece 8.
[0024]
Each leg 3 has a hole 10a formed in the inner surface thereof. The hole 10a is for inserting a bent portion 4B 'provided in the U-shaped wire 4 for pivotal connection.
[0025]
The U-shaped wire 4 is formed by forming an appropriate metal member as shown in FIGS. 1 to 5, and has a suspended rod portion 4A and a hanging portion bent at right and left positions of the suspended rod portion 4A. A pair of U-shaped wires 4 are arranged on the back surface of the table plate 1 (guide portions 6 of the leg mounting portions 2) with the X-shaped connecting rod portions 4A, and A rod portion 4B is pivotally attached to the leg portions 3 facing each other diagonally in the front-rear direction, and the leg portions 3 facing each other diagonally in the front-rear direction are connected to each other by the pair of U-shaped wires 4. As shown in FIG. 5, the pair of U-shaped wires 4 are not set in the same direction as the torsion directions of the left and right hanging rods 4B, which will be described later, and are configured as separate parts that exert different functions. Have been.). A bent portion 4B 'is formed at the tip of each of the right and left hanging rod portions 4B, and the bent portion 4B' is configured to be inserted into a hole 10a provided in the leg portion 3 to be pivotally connected. I have.
[0026]
Therefore, the degree of opening of the U-shaped wires 4 connected to the respective legs 3 and arranged in an X shape varies with the opening and closing rotation of the legs 3, and the opening movement of the U-shaped wires 4 is controlled. When the limit is reached, that is, the sliding movement of the U-shaped wire 4 moving along the guide portion 6 of the leg attachment portion 2 is regulated by the slide regulating portion 7, whereby the leg portion 3 rotates in the opening direction. Is limited.
[0027]
The right and left hanging rods 4B of the U-shaped wires 4 are twisted in opposite directions to each other, and the U-shaped wires 4 are assembled between the legs 3 facing each other diagonally in the front-rear direction. In this case, the torsion return force of each U-shaped wire 4 exerts an urging force to push and spread the left and right table boards 1.
[0028]
Specifically, in this embodiment, as shown in FIGS. 6 and 7, the left and right hanging rods 4B of the U-shaped wire 4 are connected to the legs 3 in the directions indicated by arrows a and b (see FIGS. When the force is simultaneously applied to the legs 3 (opening direction of the legs 3), the entire U-shaped wire 4 is twisted. 6 is pushed in the directions of the arrows a 'and b' in the figure, and a force for opening the table plate 1 (a force for maintaining the open state) is generated.
[0029]
Further, in this embodiment, when the left and right table plates 1 are closed and rotated to be folded and overlapped or the left and right legs 3 are closed and rotated to be overlapped, the torsional return force generated from the U-shaped wire 4 is a predetermined value. In the rotation range, the table plate 1 is configured to be urged to be in an open state, and when the left and right table plates 1 are further rotated downward beyond the rotation range, the guide portion 6 The U-shaped wire 4 slides toward the butting edge 5 side, so that the opening angle of the X-shaped U-shaped wires 4 becomes narrower, and an environment is created in which the torsional return force is less likely to act gradually. When the continuous position (contact position) of the guide portion 6 with respect to the wire 4 is closer to the center of the U-shaped wire 4, the direction in which the force is applied changes, and the torsion return force is a force that pushes up the table plate 1. Hard to function, and therefore the screw Returning force is not sufficiently exerted on the table plate 1, a state obtained by polymerizing folding the table plate 1 across the leg portion 3 is configured to be retained (see FIG. 8).
[0030]
Since this embodiment is configured as described above, when the left and right table boards 1 are folded and overlapped or the left and right legs 3 are overlapped, the U-shaped wire 4 is twisted with the rotation of the left and right table boards 1, In addition, the torsional return force is slid toward the butting edge 5 along the guide portion 6 against the torsional return force, and the left and right table plates 1 are rotated downward to reduce the torsional return force. And the table plate 1 is held in a state of being folded and overlapped with the leg portion 3 interposed therebetween.
[0031]
Therefore, according to the present embodiment, by adopting an unprecedented epoch-making structure using the U-shaped wire rod 4, a good use state of the table having the folding structure (the left and right table boards 1 are opened) In a folded state) and a folded state (a state in which the left and right table boards 1 are closed).
[0032]
Next, a second embodiment will be described.
[0033]
In the second embodiment, as shown in FIG. 11, a chair that can be folded and polymerized so as to sandwich the legs 3 by hanging down and rotating a seat plate (cushion) as the left and right support members 1 is provided. A folding structure similar to that of the first embodiment (a folding structure using a U-shaped wire 4) is provided.
[0034]
The rest is the same as in the first embodiment.
[0035]
【The invention's effect】
Since the present invention is configured as described above, a good use state (a state in which the left and right support members are opened) and a folded state (a state in which the left and right support members are closed) in the support having the folding structure can be reliably obtained. In addition, because of its simple structure, mass production and cost are excellent, and it is a revolutionary foldable support such as a foldable table or chair which has extremely high commercial value.
[0036]
According to the second aspect of the present invention, in addition to the functions and effects of the first aspect of the present invention, an epoch-making folding which is extremely high in commercial value, has a simpler structure and is excellent in mass production and cost. It becomes a support such as a possible table or chair.
[0037]
According to the third aspect of the present invention, in addition to the functions and effects of the first and second aspects of the present invention, the open state of the table plate and the leg portions is ensured by restricting the sliding movement of the U-shaped wire. And a good use condition can be obtained, thereby providing an epoch-making foldable support such as a foldable table or chair having a very high commercial value.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a first embodiment.
FIG. 2 is a perspective view showing the first embodiment.
FIG. 3 is a front view showing the first embodiment.
FIG. 4 is a schematic operation explanatory view of the first embodiment.
FIG. 5 is an explanatory diagram of a main part according to the embodiment.
FIG. 6 is an explanatory diagram of a main part according to the embodiment.
FIG. 7 is a bottom view illustrating the first embodiment.
FIG. 8 is a schematic operation explanatory view of the first embodiment.
FIG. 9 is a schematic operation explanatory view of a main part according to the first embodiment.
FIG. 10 is a schematic operation explanatory view of a main part according to the present embodiment.
FIG. 11 is a perspective view showing a second embodiment.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 support member 2 leg attachment portion 3 leg portion 4 U-shaped wire 4A erected rod portion 4B hanging rod portion 4B 'bent portion 5 butting edge 6 guide portion 7 slide regulating portion

Claims (3)

二つ折り重合する左右の支承部材の裏面の突き合わせ側前後に夫々脚取付部を設け、この左右の脚取付部を夫々枢着連結して前記左右の支承部材を突き合わせ連結し、前記脚取付部に夫々脚部を枢着し、前記左右の支承部材を垂下回動し前記脚部を挟むようにして折り畳み重合し得るように構成した折り畳み可能なテーブルや椅子などの支承体において、バネ性を有する一対のコ字状線材の架設杆部を前記支承部材同志の突き合わせ縁と交差するように前記支承部材裏面に沿設配設し、前後の垂下杆部の端部を夫々前後対角状に対向する前記脚部に連結して、このコ字状線材の架設杆部同志をＸ状に前記支承部材裏面に配して前後対角状に対向する前記脚部同志を夫々連結し、このコ字状線材の支承部材裏面方向へのスライドをガイドするガイド部を前記脚取付部に夫々設け、前記左右の支承部材を折り畳み重合若しくは左右の脚部を重合させることで、前記左右の支承部材の回動と共に前記コ字状線材はねじれを生じこのねじれ復帰力に抗して前記ガイド部に沿って突き合わせ縁側にスライド移動すると共に、前記左右の支承部材を垂下回動させることで前記ねじれ復帰力は支承部材に働かず、前記脚部を挟んで前記支承部材を折り重合した状態が保持されるように構成したことを特徴とする折り畳み可能なテーブルや椅子などの支承体。Leg attachment portions are provided on the back and front sides of the left and right support members that are folded in two, respectively, and the left and right leg attachment portions are pivotally connected to each other to butt-connect the left and right support members. pivoted respectively leg, in the scaffold, such as a configuration the foldable tables and chairs as suspended rotate the left and right bearing members may be in folded polymerized so as to sandwich the leg portion, that having a spring property A pair of U -shaped wire rods are disposed along the back surface of the support member so as to intersect with the butting edges of the support members, and the ends of the front and rear hanging rod portions face each other diagonally in the front-rear direction. The connecting rod portions of the U-shaped wire are arranged in the shape of an X on the back surface of the support member, and the leg portions facing each other diagonally in the front-rear direction are connected to each other. A guide for guiding the U-shaped wire in the back direction of the support member The left and right support members are folded and overlapped or the left and right legs are overlapped, and the U-shaped wire is twisted with the rotation of the left and right support members. The torsional restoring force does not act on the supporting member by sliding the left and right supporting members downward while rotating along the guide edge against the returning force and along the guide portion along the guide portion, and the leg is sandwiched. A support body such as a foldable table or chair, wherein the support member is configured to be maintained in a folded state. 前記コ字状線材に係る垂下杆部の先端を折曲し、この折曲部を前後対角状に対向する脚部夫々に枢着して、コ字状線材を当該脚部同志間に架設連結したことを特徴とする請求項１記載の折り畳み可能なテーブルや椅子などの支承体。The distal end of the hanging rod portion related to the U-shaped wire is bent, and the bent portion is pivotally connected to each of the opposite legs diagonally in the front-rear direction, and the U-shaped wire is erected between the legs. 2. A support such as a foldable table or chair according to claim 1, wherein the support is connected. 前記脚取付部夫々に設けたガイド部に、コ字状線材の支承部材裏面方向にして支承部材の外縁方向へのスライド移動を規制するスライド規制部を設けたことを特徴とする請求項１，２のいずれか１項に記載の折り畳み可能なテーブルや椅子などの支承体。The guide portion provided on each of the leg attachment portions is provided with a slide restricting portion for restricting a sliding movement of the support member toward the outer edge in a direction of the back surface of the support member of the U-shaped wire. 3. The support such as the foldable table or chair according to any one of 2.

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