JP4557408B2 - Chair - Google Patents

Chair Download PDF

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Publication number
JP4557408B2
JP4557408B2 JP2000338407A JP2000338407A JP4557408B2 JP 4557408 B2 JP4557408 B2 JP 4557408B2 JP 2000338407 A JP2000338407 A JP 2000338407A JP 2000338407 A JP2000338407 A JP 2000338407A JP 4557408 B2 JP4557408 B2 JP 4557408B2
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JP
Japan
Prior art keywords
seat
leg frame
wall body
tension
width direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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JP2000338407A
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Japanese (ja)
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JP2002142909A (en
Inventor
智一 村上
洋子 飯田
展久 窪田
徹 青柳
利造 村上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kokuyo Co Ltd
Takano Co Ltd
Original Assignee
Kokuyo Co Ltd
Takano Co Ltd
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Priority to JP2000338407A priority Critical patent/JP4557408B2/en
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Publication of JP4557408B2 publication Critical patent/JP4557408B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、張地の張力をクッション代わりに利用するような椅子に関するものである。
【0002】
【従来の技術】
従来から、学校やオフィス等で利用されている椅子として、金属製の丸パイプ部材で形成した前後脚フレームと、これら前後脚フレームにその前後端部を正逆方向に回転可能に支持された座とを具備してなり、前記前後脚フレーム・座の相対回転によって使用状態から前記前後脚フレームが略面一をなす折り畳み状態に折り畳めるよう構成されているものがある。
【0003】
そして、この種の折り畳み椅子では、通常、着座する位置に取り付ける座本体をクッション部材をカバーで覆ったものにより構成し、この座本体の下面を平面視ロ字形状をなす座受部により支持するようにしている。この座受部は、前記前後脚フレームと同様に丸パイプ部材で構成されている。
【0004】
【発明が解決しようとする課題】
ところで、近年、座受部により形成される開口に張地を張った状態で取り付けてその張力をクッション代わりに利用している椅子がある。
【0005】
前述した折り畳み椅子の分野でも、椅子の軽量化を図ったり、デザイン性を向上させるべく、張地を座受部により形成される開口に張って座を構成することが考えられる。張地の張力をクッション代わりに利用する場合には、張地の両縁部を支持する座受部間の離間距離がより大きい方が、撓み巾を大きく持たせてクッション性を向上させることが可能となる。しかしながら、従来の座受部を構成する丸パイプ部材は、前後脚フレームの離間距離をより小さくして見栄えを良好にしたり、折り畳み状態での前後脚フレームと座受部との干渉を防止したりする関係上、前後両脚フレームの内方側に位置させるしかなく、座面の巾寸法をより大きく確保することは難しいものであった。
【0006】
【課題を解決するための手段】
上記の問題点を解決するために、本発明は、座と、前記座の巾方向両側をそれぞれ対をなして支持する第1、第2の脚フレームとを具備してなり、これら第1、第2の脚フレームを巾方向に変位して位置するように設けてなる椅子において、第1の脚フレームが、前記座の一端部側を正逆方向に回転可能に支持し、前記第2の脚フレームが、前記第1の脚フレームに正逆方向に回転可能に連結されているとともに前記座の他端部側を正逆方向に回転可能に支持するものであり、前記第1の脚フレーム・第2の脚フレーム・座の相対回転によって使用状態から前記第1、第2の脚フレームが略面一をなす折り畳み状態に折り畳めるように構成されているとともに、前記座が、少なくとも座の巾方向両側に対をなして配置した張地取付部間に張地を張った状態で取り付けて構成されるものであり、前記張地取付部が少なくとも座の厚み方向に略沿って延びる面部を有する壁体たる左右側壁を有し後方に開口した本体と、この本体の後端側の上面に取り付けてなる後壁体とを具備してなり、この本体を前記第1、第2の脚フレーム間に位置させているとともに、前記後壁体が、座の巾方向に沿った面部を有するとともに全体が本体の左右側壁の上端よりも上方に位置する左右端部と座の厚み方向に略沿った面部を有する中央部とを具備するとともに、薄板状部材のこれら左右端部を構成する面部と中央部を構成する面部とが略直交するように面部同士を相対的にねじって形成してなり、折り畳み状態で前記左右側壁間に配置した第1又は第2の脚フレームが後壁体の左右端部の下方に位置するようにしている
【0007】
前述したような張地取付部に張地を取り付けてその張力をクッション代わりに利用している座の場合には、張地の両縁部を取り付けている対をなす張地取付部間の離間距離をより大きくして、張地により大きな撓み巾を持たせてクッション性を向上させることが望ましい。本発明のような構成であると、第1、第2の脚フレーム間に張地取付部を介在させることができるため、その構造上、両脚フレームの内方側に張地取付部である座受部を設けていた従来のものに比べて、座の巾寸法をより大きく確保することができる。したがって、張地により大きな撓み巾を持たせ、クッション性を向上させることが可能となる。
【0008】
また、第1の脚フレームが、前記座の一端部側を正逆方向に回転可能に支持し、前記第2の脚フレームが、前記第1の脚フレームに正逆方向に回転可能に連結されているとともに前記座の他端部側を正逆方向に回転可能に支持するものであり、前記第1の脚フレーム・第2の脚フレーム・座の相対回転によって使用状態から前記第1、第2の脚フレームが略面一をなす折り畳み状態に折り畳めるように構成されているので、折り畳んで持ち運んだりする機会が多い折り畳み椅子に、前述した張地や張地取付部を利用することにより、その軽量化を図ることができる。
【0009】
張地取付部の強度を向上させるとともに、張地の安定支持を図るには、張地取付部が、前記壁体と対向して位置する対向壁体と、前記壁体と対向壁体同士を連結するように座の巾方向に沿って設けた水平壁体とから構成される横断面略コ字形状をなしていることが望ましい。
【0010】
【発明の実施の形態】
以下、本発明の一実施の形態について図面を参照して説明する。
【0011】
本実施例の折り畳み椅子1は、図1に示すように、座4の後端部側を第一軸1aを介して正逆方向に回転可能に支持する第1の脚フレームたる前脚フレーム2と、前記前脚フレーム2の内側に第三軸1cを介して回転可能に取り付けてなるとともに座4の前端部側を第二軸1bを介して正逆方向に回転可能に支持する第2の脚フレームたる後脚フレーム3とを具備してなるもの、すなわち、前脚フレーム2・後脚フレーム3・座4とを第一軸1a・第二軸1b・第三軸1cを介してそれぞれ正逆方向に回転可能に連結したもので、図3中実線に示す使用状態Pから、前脚フレーム2の内側面と後脚フレーム3の外側面とが対向する位置で前脚フレーム2と後脚フレーム3とが略面一をなす図3中想像線に示す折り畳み状態Qに折り畳めるよう構成したものである。なお、この折り畳み椅子1は、折り畳み状態Qでは、図4に示すように、他の同一形状の折り畳み椅子1とともに、前面側を下として上下方向に積み上げることができるものである。
【0012】
前脚フレーム2は、スチール丸パイプ製の略U字形状のもので、上端部側に背もたれ21を有している。
【0013】
後脚フレーム3は、スチール丸パイプ製の略U字形状のもので、前記前脚フレーム2の内側に側面視X字形状となるように交差させて第三軸1cを介して前記前脚フレーム2に対して相対的に回転可能となるように連結している。なお、本実施の形態では、前脚フレーム2に対して後脚フレーム3を回転可能に支持する前記第三軸1cを具備する回転支持体5を前記後脚フレーム3の外側にスライド移動可能に取り付けることにより、使用状態Pと折り畳み状態Qとの間で座4、前後脚フレーム2、3を回転させる場合に生じる後脚フレーム3と座4の回転中心と前脚フレーム2と後脚フレーム3の回転中心との間の変位を吸収するようにしている。
【0014】
座4は、図2に示すように、中央に開口を有してなる平面視略ロ字形状の張地取付部たる座受部6と、この座受部6の開口内に張った状態で取り付けてなる張地7と、前記張地7を取り付けた前記座受部6の外周を被覆する平面視略ロ字形状で合成樹脂製の座枠部8とを具備してなるものである。なお、図5では、前記張地7及び座枠部8を省略している。この張地7は、ネット素材により構成されており、その縁部を前記座受部6に巻き付けてビス等の取付具を利用して取り付けるか、或いは前記座受部6に熱溶着により固定するか等の適宜の手段によって適度にテンションをかけた状態で取り付けられている。
【0015】
座受部6は、図2に示すように、座4の厚み方向に略沿った面部を有する薄板状部材を略U字形状に折り曲げ成形した座受部本体61と、座4の巾方向に略沿った面部を有する薄板状部材を略U字形状に折り曲げ成形して前記座受部本体61の上面に適宜の手段で取り付けた水平壁体62と、前記座受部本体61の後端側に取り付けた後壁体63とを具備している。前記後壁体63は、前記座受部本体61の後端側の上面に溶接等の適宜の手段を利用して取り付けたもので、座4の巾方向に略沿った面部を有する左右端部631と、座4の厚み方向に略沿った面部を有する中央部632とを具備してなる。この後壁体63は、薄板状部材の左右端部631を構成する面部と中央部632を構成する面部とが略直交するように面部同士を相対的にねじって形成したものである。このように左右端部631を巾方向に略沿った面部とすることにより切欠等を設ける場合に比べて強度を損なうことなく折り畳み状態Qでの後脚フレーム3との干渉を防止し得るとともに、中央部632を厚み方向に略沿った面部とすることにより、荷重による撓みを防止することが可能となる。
【0016】
上記構成の座受部6と張地7と座枠部8とを利用して、前記座4を構成する場合には、前記張地7の縁部を前記座受部6に巻き付けてビス等の取付具を利用して取り付けるか、或いは前記座受部6に熱溶着により固定するか等の適宜の手段によって適度にテンションをかけた状態で取り付け、しかる後、上方から前記座枠部8を座4の外周を被覆するように被せてビス止め等の適宜の手段で固定する。
【0017】
このような構成のものにおいて、本実施の形態の折り畳み椅子1の座4は、前述したように、張地7の縁部を座受部6に形成される開口内に張った状態で取り付けて構成されるものであり、前記張地7の張力をクッション代わりに利用している。そして、図5及び図6に示すように、前記座受部本体61が座4の厚み方向に沿った壁体たる左右側壁611を具備してなり、この左右側壁611を前記前脚フレーム2と後脚フレーム3の間に位置させているものである。
【0018】
具体的に説明すると、前記座受部本体61は、座4の厚み方向に略沿った面部を有する左右一対の薄板状の左右側壁611と、これら左右側壁611を連結する座4の厚み方向に略沿った面部を有する前壁612とを具備してなるものである。そして、前記左右側壁611を前記前脚フレーム2と後脚フレーム3の間に位置させている。
【0019】
このように座受部6に張地7を取り付けてその張力をクッション代わりに利用している座4の場合には、張地7の両縁部を取り付けている対向する座受部要素間の離間距離をより大きくして、張地7により大きな撓み巾を持たせてクッション性を向上させることが望ましい。特に、この種の折り畳み椅子1では、座4の巾方向にそれぞれ対をなす前後脚フレーム2、3が存在しているため、巾寸法をより大きく確保することが難しい。しかしながら、上述したような本実施の形態の構成であると、前後脚フレーム2、3間に座4の左右縁部を構成する座受部6の左右側壁611を介在させているので、両脚フレーム2、3の内方側に座受部の左右縁部を設けていた従来のものに比べて、座4の巾寸法をより大きく確保することができる。したがって、張地7により大きな撓み巾を持たせ、座4のクッション性を向上させることが可能となる。
【0020】
前脚フレーム2が、前記座4の前端部側を正逆方向に回転可能に支持し、後脚フレーム3が、前記前脚フレーム2に正逆方向に回転可能に連結されているとともに前記座4の後端部側を正逆方向に回転可能に支持するものであり、前記前脚フレーム2・後脚フレーム3・座4の相対回転によって使用状態Pから前記前後脚フレーム2、3が略面一をなす折り畳み状態Qに折り畳めるように構成されているので、前述した張地7や座受部6を利用することにより椅子全体の軽量化を図り、折り畳んで持ち運んだりする機会が多い折り畳み椅子1の使い勝手を良好なものとすることが可能である。
【0021】
なお、本発明における構成は、以上説明したものに限定されないのは勿論である。例えば、本実施の形態では、座受部6が、前記前脚フレーム2と後脚フレーム3の間に位置する左右側壁611を有しているものであったが、これに限定されず、座受部が、前記左右側壁と対向して位置する内左右側壁と、これら左右側壁と内左右側壁同士を連結するように座の巾方向に沿って設けた頂壁とから構成される横断面略コ字形状をなしているものであってもよい。このような構成のものであると、着座者の荷重を受けることになる座受部の横断面形状を略コ字形状にしてその強度を向上させることができる。また、頂壁の存在により張地にかかる荷重を座受部で支持する支持面積をより大きく確保することができるため、張地に無理な力がかかることによる破損等を有効に防止することができる。
【0022】
その他の構成も本発明の趣旨を逸脱しない範囲で種々変形が可能である。
【0023】
【発明の効果】
本発明は、以上説明したような構成で実施され以下に記載されるような効果を奏する。
【0024】
すなわち、本発明は、前記座が、少なくとも座の巾方向に対をなして配置した張地取付部間に張地の縁部を張った状態で取り付けて構成されるものであり、前記張地取付部が少なくとも座の厚み方向に略沿って延びる面部を有する壁体たる左右側壁を有する本体と、この本体の後端側の上面に取り付けてなる後壁体とを具備してなり、この本体を前記第1、第2の脚フレーム間に位置させているとともに、前記後壁体が、座の巾方向に沿った面部を有する左右端部を具備してなるので、両脚フレームの内方側に張地取付部である座受部を設けていた従来のものに比べて、座の巾寸法をより大きく確保することができる。したがって、張地で座面を形成する場合に、前記張地により大きな撓み巾を持たせ、座のクッション性を向上させることが可能となる。
【0025】
また、第1の脚フレームが、前記座の一端部側を正逆方向に回転可能に支持し、前記第2の脚フレームが、前記第1の脚フレームに正逆方向に回転可能に連結されているとともに前記座の他端部側を正逆方向に回転可能に支持するものであり、前記第1の脚フレーム・第2の脚フレーム・座の相対回転によって使用状態から前記第1、第2の脚フレームが略面一をなす折り畳み状態に折り畳めるように構成されているので、折り畳んで持ち運んだりする機会が多い折り畳み椅子に、前述した張地や張地取付部を利用することにより、その軽量化を図ることができる。
【0026】
張地取付部が、前記壁体と対向して位置する対向壁体と、前記壁体と対向壁体同士を連結するように座の巾方向に沿って設けた水平壁体とから構成される横断面略コ字形状をなしているものであるならば、着座者の荷重を受けることになる張地取付部を略コ字形状にしてその強度を向上させることができる。また、水平壁体により張地にかかる荷重を座受部で支持する支持面積をより大きく確保することができるため、張地に無理な力がかかることによる破損等を有効に防止することができる。
【図面の簡単な説明】
【図1】本発明の一実施の形態を示す全体斜視図。
【図2】同分解斜視図。
【図3】同椅子の使用状態及び折り畳み状態を示す側面図。
【図4】同折り畳み状態で複数の椅子を積み上げた状態を示す側面図。
【図5】同要部を下方から見た状態を示す斜視図。
【図6】同正断面図。
【符号の説明】
1…折り畳み椅子
2…第1の脚フレーム(前脚フレーム)
3…第2の脚フレーム(後脚フレーム)
4…座
6…座受部
611…壁体(左右側壁)
7…張地
P…使用状態
Q…折り畳み状態
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chair that uses tension of a tension fabric instead of a cushion.
[0002]
[Prior art]
Conventionally, as chairs used in schools, offices, etc., front and rear leg frames formed of metal round pipe members, and seats that are supported by these front and rear leg frames so that their front and rear ends can be rotated in forward and reverse directions. And is configured to be folded from a use state into a folded state in which the front and rear leg frames are substantially flush with each other by relative rotation of the front and rear leg frames and seats.
[0003]
In this type of folding chair, the seat body attached to the seating position is usually constituted by a cushion member covered with a cover, and the lower surface of the seat body is supported by a seat receiving portion having a rectangular shape in plan view. I am doing so. This seat receiving part is comprised by the round pipe member similarly to the said front-and-back leg frame.
[0004]
[Problems to be solved by the invention]
By the way, in recent years, there is a chair that is attached to the opening formed by the seat receiving portion in a stretched state and uses the tension instead of the cushion.
[0005]
Also in the field of the folding chair described above, it is conceivable to construct a seat by stretching a stretch fabric over an opening formed by a seat receiving portion in order to reduce the weight of the chair or improve the design. When the tension of the tension fabric is used instead of the cushion, the larger the separation distance between the seat receiving portions that support both edges of the tension fabric, the greater the bending width, and the cushioning property can be improved. It becomes possible. However, the round pipe member constituting the conventional seat receiving portion has a smaller distance between the front and rear leg frames to improve the appearance, and prevents interference between the front and rear leg frames and the seat receiving portion in the folded state. For this reason, it must be positioned on the inner side of the front and rear leg frames, and it is difficult to ensure a larger width dimension of the seating surface.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention comprises a seat and first and second leg frames that support the seat in a pair in the width direction. In the chair provided so that the second leg frame is displaced in the width direction, the first leg frame supports the one end side of the seat so as to be rotatable in forward and reverse directions, and the second leg frame. A leg frame is connected to the first leg frame so as to be rotatable in forward and reverse directions, and supports the other end portion of the seat so as to be rotatable in forward and reverse directions. The second leg frame is configured to be folded from a use state into a folded state in which the first and second leg frames are substantially flush with each other by relative rotation of the seat, and the seat has at least a seat width. Tension ground between the tension ground mounting parts arranged in pairs on both sides in the direction And which is formed of mounting in a state of taut, a body in which the coated cloth mounting section is opened in the rear has a wall serving as left and right side walls having a surface portion which extends substantially along the thickness direction of at least the seat of the body And a rear wall body attached to the upper surface on the rear end side. The main body is positioned between the first and second leg frames, and the rear wall body extends in the seat width direction. And the left and right ends of the thin plate-like member, and the left and right ends of the thin plate-like member. The first or second leg frame is formed by relatively twisting the surface portions so that the surface portion constituting the portion and the surface portion constituting the center portion are substantially orthogonal to each other, and disposed between the left and right side walls in the folded state. Is located below the left and right ends of the rear wall I have to so that.
[0007]
In the case of a seat where the tension is attached to the tension attachment part as described above and the tension is used instead of the cushion, the distance between the pair of tension attachment parts to which both edges of the tension element are attached is made. It is desirable to improve the cushioning property by increasing the distance and giving a larger deflection width to the stretched fabric. According to the configuration of the present invention, since the tension ground attachment part can be interposed between the first and second leg frames, the seat which is the tension ground attachment part on the inner side of both leg frames due to its structure. Compared to the conventional one provided with the receiving portion, the seat width dimension can be secured larger. Therefore, it becomes possible to give a large deflection width to the stretch fabric and improve the cushioning property.
[0008]
The first leg frame supports one end of the seat so as to be rotatable in forward and reverse directions, and the second leg frame is connected to the first leg frame so as to be rotatable in forward and reverse directions. And the other end side of the seat is rotatably supported in the forward and reverse directions, and the first and second leg frames, the second leg frame, and the seat are moved from the use state by relative rotation of the first leg frame, the second leg frame, and the seat. Since the two leg frames are configured to be folded in a substantially flush state, the above-described tensioning seat and the tensioning portion attaching portion can be used for a folding chair that is often folded and carried. Weight reduction can be achieved.
[0009]
In order to improve the strength of the upholstery mounting portion and to support stable support of the upholstery portion, the upholstery mounting portion includes an opposing wall body that faces the wall body, and the wall body and the opposing wall body. It is desirable to have a substantially U-shaped cross section composed of a horizontal wall provided along the width direction of the seat so as to be connected.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0011]
As shown in FIG. 1, the folding chair 1 of the present embodiment includes a front leg frame 2 as a first leg frame that supports a rear end portion side of a seat 4 so as to be rotatable in a forward and reverse direction via a first shaft 1a. A second leg frame that is rotatably attached to the inside of the front leg frame 2 via a third shaft 1c and supports the front end portion side of the seat 4 so as to be rotatable in the forward and reverse directions via the second shaft 1b. The front leg frame 2, the rear leg frame 3, and the seat 4 are respectively forward and reverse through the first shaft 1a, the second shaft 1b, and the third shaft 1c. The front leg frame 2 and the rear leg frame 3 are substantially connected at a position where the inner side surface of the front leg frame 2 and the outer side surface of the rear leg frame 3 face each other from the use state P indicated by the solid line in FIG. It can be folded to the folded state Q shown in the imaginary line in FIG. It is those that form. In the folded state Q, the folding chair 1 can be stacked up and down with the front side facing down together with other folding chairs 1 having the same shape as shown in FIG.
[0012]
The front leg frame 2 has a substantially U shape made of a steel round pipe and has a backrest 21 on the upper end side.
[0013]
The rear leg frame 3 is substantially U-shaped made of a steel round pipe. The rear leg frame 3 intersects the inside of the front leg frame 2 so as to form an X shape in a side view and is connected to the front leg frame 2 via a third shaft 1c. They are connected so as to be relatively rotatable. In the present embodiment, the rotary support 5 having the third shaft 1c for rotatably supporting the rear leg frame 3 with respect to the front leg frame 2 is attached to the outside of the rear leg frame 3 so as to be slidable. Accordingly, the rotation of the rear leg frame 3 and the seat 4 and the rotation of the front leg frame 2 and the rear leg frame 3 that occur when the seat 4 and the front and rear leg frames 2 and 3 are rotated between the use state P and the folded state Q. The displacement between the center is absorbed.
[0014]
As shown in FIG. 2, the seat 4 has a seat receiving portion 6 as an upholstery attachment portion having a substantially square shape in plan view and having an opening at the center, and is stretched in the opening of the seat receiving portion 6. The upholstery 7 to be attached and the seat frame portion 8 made of a synthetic resin in a substantially square shape in plan view covering the outer periphery of the seat receiving portion 6 to which the upholstery 7 is attached are provided. In FIG. 5, the upholstery 7 and the seat frame 8 are omitted. The upholstery 7 is made of a net material, and the edge thereof is wound around the seat receiving portion 6 and attached using a fitting such as a screw, or is fixed to the seat receiving portion 6 by thermal welding. It is attached in an appropriately tensioned state by appropriate means such as these.
[0015]
As shown in FIG. 2, the seat receiving portion 6 includes a seat receiving portion main body 61 formed by bending a thin plate-like member having a surface portion substantially along the thickness direction of the seat 4 into a substantially U shape, and a width direction of the seat 4. A horizontal wall body 62 formed by bending a thin plate-like member having a substantially along surface portion into a substantially U shape and attached to the upper surface of the seat receiving portion main body 61 by an appropriate means, and the rear end side of the seat receiving portion main body 61 And a rear wall body 63 attached thereto. The rear wall 63 is attached to the upper surface on the rear end side of the seat receiving portion main body 61 using an appropriate means such as welding, and has left and right end portions having surface portions substantially along the width direction of the seat 4. 631 and a central portion 632 having a surface portion substantially along the thickness direction of the seat 4. The rear wall 63 is formed by relatively twisting the surface portions so that the surface portion constituting the left and right end portions 631 of the thin plate member and the surface portion constituting the central portion 632 are substantially orthogonal to each other. In this way, by making the left and right end portions 631 a surface portion substantially along the width direction, it is possible to prevent interference with the rear leg frame 3 in the folded state Q without losing strength as compared with the case where notches are provided. By making the central portion 632 a surface portion substantially along the thickness direction, it is possible to prevent bending due to a load.
[0016]
When the seat 4 is configured by using the seat receiving portion 6, the upholstery 7, and the seat frame portion 8 having the above-described configuration, an edge of the upholstery 7 is wound around the seat receiving portion 6 and a screw or the like. It is attached in a state where it is appropriately tensioned by an appropriate means such as attaching to the seat receiving part 6 by heat welding, and then the seat frame part 8 is attached from above. Cover the outer periphery of the seat 4 and fix it with appropriate means such as screws.
[0017]
In such a configuration, the seat 4 of the folding chair 1 according to the present embodiment is attached in a state where the edge of the upholstery 7 is stretched in the opening formed in the seat receiving portion 6 as described above. The tension of the upholstery 7 is used instead of the cushion. As shown in FIGS. 5 and 6, the seat receiving portion main body 61 includes left and right side walls 611 as wall bodies along the thickness direction of the seat 4, and the left and right side walls 611 are connected to the front leg frame 2 and the rear side. It is located between the leg frames 3.
[0018]
More specifically, the seat receiving portion main body 61 has a pair of left and right thin plate-like left and right side walls 611 having a surface portion substantially along the thickness direction of the seat 4, and the thickness direction of the seat 4 connecting the left and right side walls 611. And a front wall 612 having a substantially along surface portion. The left and right side walls 611 are positioned between the front leg frame 2 and the rear leg frame 3.
[0019]
In this way, in the case of the seat 4 in which the upholstery 7 is attached to the seat receiving portion 6 and the tension is used instead of the cushion, between the opposite seat receiving portion elements to which both edges of the upholstery 7 are attached. It is desirable to increase the separation distance so that the cushioning property is improved by providing a larger bending width to the tensioned fabric 7. In particular, in the folding chair 1 of this type, the front and rear leg frames 2 and 3 that make a pair in the width direction of the seat 4 exist, and therefore it is difficult to ensure a larger width dimension. However, in the case of the configuration of the present embodiment as described above, the left and right side walls 611 of the seat receiving portion 6 constituting the left and right edge portions of the seat 4 are interposed between the front and rear leg frames 2 and 3, so The width dimension of the seat 4 can be ensured larger than the conventional one in which the left and right edge portions of the seat receiving portion are provided on the inner sides of the seats 2 and 3. Therefore, it becomes possible to give a large bending width to the stretch 7 and improve the cushioning property of the seat 4.
[0020]
The front leg frame 2 supports the front end portion of the seat 4 so as to be rotatable in forward and reverse directions, and the rear leg frame 3 is connected to the front leg frame 2 so as to be rotatable in forward and reverse directions and The rear end side is supported so as to be rotatable in forward and reverse directions, and the front and rear leg frames 2 and 3 are substantially flush from the use state P by relative rotation of the front leg frame 2, rear leg frame 3 and seat 4. Since it is configured to be folded in the folded state Q, the use of the folding chair 1 that reduces the overall weight of the chair by using the above-described tension place 7 and the seat receiving portion 6, and has many opportunities to fold and carry the chair. Can be made good.
[0021]
Of course, the configuration of the present invention is not limited to the above-described configuration. For example, in the present embodiment, the seat receiving portion 6 has the left and right side walls 611 positioned between the front leg frame 2 and the rear leg frame 3, but the present invention is not limited to this. The cross section is generally formed by a lateral cross section composed of inner left and right side walls positioned opposite to the left and right side walls, and a top wall provided along the width direction of the seat so as to connect the left and right side walls and the inner left and right side walls. It may have a letter shape. With such a configuration, the strength of the seat receiving part that receives the load of the seated person can be improved by making the cross-sectional shape of the seat receiving part substantially U-shaped. In addition, the presence of the top wall can secure a larger support area for supporting the load applied to the tensioned fabric by the seat receiving portion, and therefore it is possible to effectively prevent breakage due to excessive force applied to the tensioned fabric. it can.
[0022]
Other configurations can be variously modified without departing from the spirit of the present invention.
[0023]
【The invention's effect】
The present invention is implemented with the configuration as described above, and has the following effects.
[0024]
That is, the present invention is configured such that the seat is attached in a state where the edge of the tension fabric is stretched between the tension fabric attachment portions arranged at least in the width direction of the seat, A main body having left and right side walls which are wall bodies having surface portions extending substantially along the thickness direction of the seat, and a rear wall body attached to the upper surface on the rear end side of the main body. Is positioned between the first and second leg frames , and the rear wall body has left and right end portions having surface portions along the width direction of the seat, so that the inner side of both leg frames Compared to the conventional one in which the seat receiving portion which is the tension attachment portion is provided, the width of the seat can be secured larger. Therefore, when the seating surface is formed with a stretched fabric, the stretched fabric can have a large bending width, and the cushioning property of the seat can be improved.
[0025]
The first leg frame supports one end of the seat so as to be rotatable in forward and reverse directions, and the second leg frame is connected to the first leg frame so as to be rotatable in forward and reverse directions. And the other end side of the seat is rotatably supported in the forward and reverse directions, and the first and second leg frames, the second leg frame, and the seat are moved from the use state by relative rotation of the first leg frame, the second leg frame, and the seat. Since the two leg frames are configured to be folded in a substantially flush state, the above-described tensioning seat and the tensioning portion attaching portion can be used for a folding chair that is often folded and carried. Weight reduction can be achieved.
[0026]
The upholstery mounting portion is configured by an opposing wall body that faces the wall body, and a horizontal wall body that is provided along the width direction of the seat so as to connect the wall body and the opposing wall body. If the cross section has a substantially U-shape, the strength of the upholstery attachment portion that receives the load of the seated person can be made substantially U-shaped to improve its strength. In addition, since the support area for supporting the load applied to the tensioned fabric by the horizontal wall body can be secured larger, it is possible to effectively prevent breakage due to excessive force applied to the tensioned fabric. .
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the same.
FIG. 3 is a side view showing a use state and a folded state of the chair.
FIG. 4 is a side view showing a state in which a plurality of chairs are stacked in the same folded state.
FIG. 5 is a perspective view showing a state in which the main part is viewed from below.
FIG. 6 is a front sectional view of the same.
[Explanation of symbols]
1 ... Folding chair 2 ... First leg frame (front leg frame)
3. Second leg frame (rear leg frame)
4 ... Seat 6 ... Seat receiving portion 611 ... Wall body (left and right side walls)
7 ... Zhangji P ... State of use Q ... Folded state

Claims (2)

座と、前記座の巾方向両側をそれぞれ対をなして支持する第1、第2の脚フレームとを具備してなり、これら第1、第2の脚フレームを巾方向に変位して位置するように設けてなる椅子において、
第1の脚フレームが、前記座の一端部側を正逆方向に回転可能に支持し、前記第2の脚フレームが、前記第1の脚フレームに正逆方向に回転可能に連結されているとともに前記座の他端部側を正逆方向に回転可能に支持するものであり、前記第1の脚フレーム・第2の脚フレーム・座の相対回転によって使用状態から前記第1、第2の脚フレームが略面一をなす折り畳み状態に折り畳めるように構成されているとともに、
前記座が、少なくとも座の巾方向両側に対をなして配置した張地取付部間に張地を張った状態で取り付けて構成されるものであり、前記張地取付部が少なくとも座の厚み方向に略沿って延びる面部を有する壁体たる左右側壁を有し後方に開口した本体と、この本体の後端側の上面に取り付けてなる後壁体とを具備してなり、この本体を前記第1、第2の脚フレーム間に位置させているとともに、前記後壁体が、座の巾方向に沿った面部を有するとともに全体が本体の左右側壁の上端よりも上方に位置する左右端部と座の厚み方向に略沿った面部を有する中央部とを具備するとともに、薄板状部材のこれら左右端部を構成する面部と中央部を構成する面部とが略直交するように面部同士を相対的にねじって形成してなり、折り畳み状態で前記左右側壁間に配置した第1又は第2の脚フレームが後壁体の左右端部の下方に位置するようにしていることを特徴とする椅子。
A seat and first and second leg frames that support the seat in a pair in the width direction are disposed, and the first and second leg frames are positioned by being displaced in the width direction. In the chair provided as
A first leg frame supports one end of the seat so as to be rotatable in forward and reverse directions, and the second leg frame is connected to the first leg frame so as to be rotatable in forward and reverse directions. The other end of the seat is supported so as to be rotatable in forward and reverse directions. The first and second leg frames, the second leg frame, and the seat are rotated relative to each other from the use state. The leg frame is configured to be folded in a substantially flush state,
The seat is configured to be attached in a state in which a tension is stretched between at least two tension-strength attachment portions arranged on both sides in the width direction of the seat, and the tension fabric attachment portion is at least in the thickness direction of the seat. A main body having left and right side walls as a wall body having a surface portion extending substantially along the rear side, and a rear wall body attached to an upper surface on the rear end side of the main body. The left and right end portions positioned between the first and second leg frames, the rear wall body having a surface portion along the width direction of the seat, and the whole is positioned above the upper ends of the left and right side walls of the main body. A central portion having a surface portion substantially along the thickness direction of the seat, and the surface portions are relatively arranged so that the surface portion constituting the left and right end portions of the thin plate member and the surface portion constituting the center portion are substantially orthogonal to each other. To the left in the folded state Chair, characterized in that the first or second leg frame arranged between the side walls are to be positioned below the right and left ends of the rear wall.
張地取付部が、前記壁体と対向して位置する対向壁体と、前記壁体と対向壁体同士を連結するように座の巾方向に略沿って延びる面部を有する水平壁体とから構成される横断面略コ字形状をなしているものであることを特徴とする請求項1記載の椅子。The tension wall attaching portion includes a facing wall body facing the wall body, and a horizontal wall body having a surface portion extending substantially along the width direction of the seat so as to connect the wall body and the facing wall body. The chair according to claim 1, wherein the chair has a substantially U-shaped cross section.
JP2000338407A 2000-11-06 2000-11-06 Chair Expired - Fee Related JP4557408B2 (en)

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JP5415859B2 (en) * 2009-07-27 2014-02-12 株式会社岡村製作所 Chair

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5829348U (en) * 1981-08-20 1983-02-25 株式会社ムラタインテリアデザイン Leg assembly structure for folding chairs, etc.
JPH0396748U (en) * 1990-01-22 1991-10-03
JPH11151134A (en) * 1997-11-25 1999-06-08 Ts Tech Co Ltd Seat having seat surface made of elastic plane

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5829348U (en) * 1981-08-20 1983-02-25 株式会社ムラタインテリアデザイン Leg assembly structure for folding chairs, etc.
JPH0396748U (en) * 1990-01-22 1991-10-03
JPH11151134A (en) * 1997-11-25 1999-06-08 Ts Tech Co Ltd Seat having seat surface made of elastic plane

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