JP2006239079A - Chair - Google Patents

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JP2006239079A
JP2006239079A JP2005057720A JP2005057720A JP2006239079A JP 2006239079 A JP2006239079 A JP 2006239079A JP 2005057720 A JP2005057720 A JP 2005057720A JP 2005057720 A JP2005057720 A JP 2005057720A JP 2006239079 A JP2006239079 A JP 2006239079A
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backrest
seat
auxiliary support
frame structure
main frame
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JP4792234B2 (en
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Tomoji Kan
智士 管
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Itoki Corp
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Itoki Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a chair provided with a rocking function though in a simple structure. <P>SOLUTION: A seat 1 and a backrest 2 are integrally connected. Main frames provided with a front foot part 6 and a beam-like part 7 are arranged on both left and right sides of the seat 1, and the backrest 2 is attached to the rear end of the beam-like part 7. The anteroposterior middle part of the seat 1 is supported by an auxiliary support part 10 in a forward tilting posture in the side face view. The front foot part 6 and the beam-like part 7 are bent and deformed against the elasticity and the rocking function of the backrest 2 is imparted by the bending deformation. Also, since the seat 2 is supported by the auxiliary support part 10, excessive bending force is not applied to the front foot part 6 and the beam-like part 7, and safety is secured as well. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本願発明は、ロッキング機能を有する椅子に関するものである。   The present invention relates to a chair having a locking function.

座と背もたれとを棒材やパイプ材で構成されたフレーム構造体によって支持して成る椅子において、フレーム構造体の弾性変形を利用して背もたれの後傾動を許容することが行われている。その例が特許文献１に記載されている。   In a chair in which a seat and a backrest are supported by a frame structure composed of a bar material or a pipe material, the back tilt of the backrest is allowed by using elastic deformation of the frame structure. An example thereof is described in Patent Document 1.

すなわち、この特許文献１の椅子において、フレーム構造体は、床に載る前後長手の左右の下水平部と、下水平部の前端から上向きに立ち上がった左右前足部と、左右足部の上端から後方に延びる上水平部と、ベース部の後端から立ち上がった左右後足部とを備えており、左右の上水平部に座を取付けると共に、左右の上水平部の後端を上向きに立ち上げて下横長部にて接続し、この横長部を背もたれの下部背面に連結する一方、左右の後足部の上端は上横長部で接続して上横長部に背もたれの中途高さ部背面に連結しており、主として後足部が弾性に抗して後傾動することによって背もたれを後傾動させている。
特公平８−１５４４６号公報 That is, in the chair of Patent Document 1, the frame structure includes left and right lower horizontal portions that are longitudinally placed on the floor, left and right forefoot portions that rise upward from the front end of the lower horizontal portion, and rearward from the upper ends of the left and right foot portions. It has an upper horizontal part extending to the left and right and left hind legs raised from the rear end of the base part, and seats are attached to the left and right upper horizontal parts and the rear ends of the left and right upper horizontal parts are raised upward Connect at the lower horizontal part and connect this horizontal part to the lower back of the backrest, while connecting the upper ends of the left and right rear legs at the upper horizontal part and connect the upper horizontal part to the back of the mid-height part of the backrest. The backrest is tilted backward mainly by tilting the rear foot against the elasticity.
Japanese Patent Publication No. 8-15446

特許文献１のものは、フレーム構造体の弾性変形を利用してロッキング機能を付与できるとは言いつつも、フレーム構造体は複雑な形状に折り曲げなければならないため構造が複雑になりがちである問題があった。また、背もたれの後傾動に連動して座が後傾したり前進したりすると快適さが向上するが、背もたれの後傾動に連動して座は僅かに前進動するに過ぎないため、ロッキング状態での快適さを高めることに限度があった。   Although the thing of patent document 1 can say that a locking function can be provided using the elastic deformation of a frame structure, the structure tends to become complicated because the frame structure must be bent into a complicated shape. was there. In addition, if the seat is tilted backwards or moves forward in conjunction with the back tilt of the backrest, the comfort is improved, but the seat only moves slightly forward in conjunction with the back tilt of the backrest, so in the locked state There was a limit to increasing the comfort of.

他方、例えば実開昭６２−１２９９４７号公報や実開昭６０−４８４２８号公報には、側面視で後ろ向き開口コ字（横向きＵ字状）のフレームで座と背もたれとを支持した椅子が開示されており、このフレームを撓み変形する構造にすると簡単な構造のロッキング椅子を提供できる。しかし、このようにコ字状のフレームではフレームのうち片持ち梁状の上部に人の荷重が作用するため、頑丈な構造にしないと強度を確保することができず、従って、実質的にはロッキング仕様とすることはできないと言える。   On the other hand, for example, Japanese Utility Model Publication No. 62-129947 and Japanese Utility Model Application Publication No. 60-48428 disclose chairs in which a seat and a backrest are supported by a frame having a backward-facing U-shape (laterally U-shaped) in a side view. If the frame is bent and deformed, a rocking chair having a simple structure can be provided. However, in this U-shaped frame, human load acts on the cantilevered upper part of the frame, so it is not possible to secure strength unless it is a sturdy structure, and therefore substantially It can be said that it cannot be a locking specification.

本願発明は、このような現状を改善すべく成されたものである。   The present invention has been made to improve the current situation.

請求項１の発明に係る椅子は、座及び背もたれと、これらを支持するフレーム構造体とを備えており、前記フレーム構造体は、座及び背もたれを安定的に支持するためのベース部と、ベース部の前端部から立ち上がって片持ち梁の状態で座と背もたれとを支持するメインフレームとを備えており、メインフレームが撓み変形することによって背もたれの後傾動が許容されており、更に、背もたれの後傾動を許容しつつ座又は背もたれを下方から支持する補助支持部を備えている。   The chair according to the invention of claim 1 includes a seat and a backrest, and a frame structure that supports them, and the frame structure includes a base portion for stably supporting the seat and the backrest, and a base A main frame that stands up from the front end of the unit and supports the seat and the backrest in a cantilever state, and the main frame is allowed to tilt after the backrest by bending and deforming. An auxiliary support part that supports the seat or the backrest from below while allowing the rearward tilt is provided.

請求項２の発明に係る椅子は、請求項１において、先ず、前記座の後端と背もたれの下端とは一体に繋がっており、これら座と背もたれとの連結部か又は背もたれのうちその下部に屈曲許容部を形成することにより、背もたれの全体又は大部分が座に対して相対的に後傾動することが許容されている。   The chair according to the invention of claim 2 is the chair according to claim 1, in which the rear end of the seat and the lower end of the backrest are integrally connected to each other, and a connecting portion between these seats and the backrest or a lower portion of the backrest. By forming the bending allowance portion, the whole or most of the backrest is allowed to tilt backward relative to the seat.

次に、前記フレーム構造体のメインフレームは、前記ベース部の前端から略上向きに立ち上がって座よりも上方に延びる側面視後傾姿勢の前足部と、この前足部の上端から後方に延びて背もたれの背面に回り込む梁状部とを備えており、前記梁状部の後端に背もたれを取付けており、更に、前記補助支持部はベース部の後端から側面視で前傾姿勢で上向きに延びており、補助支持部の上端で座を下方から支持している。   Next, the main frame of the frame structure has a forefoot part that stands up substantially upward from the front end of the base part and extends upward from the seat, and a backrest that extends backward from the upper end of the front foot part. A backrest is attached to the rear end of the beam-like portion, and the auxiliary support portion extends upward from the rear end of the base portion in a forward leaning posture in a side view. The seat is supported from below by the upper end of the auxiliary support portion.

本願発明によると、メインフレームの弾性変形を利用して背もたれのロッキング状態を得るものであるため、フレーム構造体の構造はごく簡単であり、また、補助支持部の存在により、メインフレームに過大な曲げ荷重が掛かることを防止できるため、メインフレームが破損するような問題はない。従って、安全性を確保しつつ、簡単な構成で椅子をロッキング仕様とすることができる。   According to the present invention, since the rocking state of the backrest is obtained by utilizing the elastic deformation of the main frame, the structure of the frame structure is very simple, and due to the presence of the auxiliary support portion, the main frame is excessively large. Since the bending load can be prevented, there is no problem that the main frame is damaged. Therefore, the chair can be made into a rocking specification with a simple configuration while ensuring safety.

なお、本願発明の補助支持部は本質的に弾性変形しない剛体構造でも良いし、ロッキング時に弾性変形する構成でも良い。ロッキング時に補助支持部が弾性変形する構成にすると、メインフレームの弾性変形と協働して背もたれの後傾角度を大きくすることができる。   Note that the auxiliary support portion of the present invention may have a rigid body structure that is essentially not elastically deformed, or may be configured to be elastically deformed when locking. When the auxiliary support portion is elastically deformed during locking, the back tilt angle of the backrest can be increased in cooperation with the elastic deformation of the main frame.

請求項２のように構成すると、背もたれの後傾動に連動して座が後傾動又は前進動するため、ロッキング状態での快適さをより向上することができる。   According to the second aspect, since the seat tilts backward or moves forward in conjunction with the backward tilting of the backrest, the comfort in the locked state can be further improved.

次に、本願発明の実施形態を図面に基づいて説明する。   Next, an embodiment of the present invention will be described with reference to the drawings.

(1).第１実施形態（図１〜図２）
図１及び図２では第１実施形態を示している。このうち図１（Ａ）は椅子の斜視図であり、この図から理解できるように、椅子は、座１及び背もたれ２とこれを支持するフレーム構造体３とを備えている。 (1). First embodiment (FIGS. 1 and 2)
1 and 2 show the first embodiment. 1A is a perspective view of the chair, and as can be understood from this figure, the chair includes a seat 1, a backrest 2, and a frame structure 3 that supports the seat.

座１の後端と背もたれ２の下端とは一体に繋がっている。図２（Ａ）は椅子の縦断側面図であり、この図に示すように、座板１及び背もたれ２はそれぞれシェル板（座板，背板）１ａ，２ａにクッション１ｂ，２ｂを張った構造になっている。勿論、クッション１ｂ，２ｂを備えないシェル板１ａ，１ａのみの構成とすることも可能である。   The rear end of the seat 1 and the lower end of the backrest 2 are integrally connected. FIG. 2 (A) is a longitudinal side view of the chair. As shown in this figure, the seat plate 1 and the backrest 2 have a structure in which cushions 1b, 2b are stretched on shell plates (seat plates, back plate) 1a, 2a, respectively. It has become. Of course, it is also possible to use only the shell plates 1a and 1a without the cushions 1b and 2b.

背もたれ２は荷重が作用しない自由状態において全体として後傾しており、かつ、シェル板２ａのうち下部（着座した人の腰が当たる程度の高さ位置）を水平状に延びる屈曲許容部４と成し、この屈曲許容部４を挟んで上部の後傾角度を大きくしている。言うまでもないが、背もたれ２は側面視において屈曲許容部４を中心にして屈曲し、その結果、背もたれ２の大部分が座１に対して相対的に後傾動し得る。   The backrest 2 is tilted rearward as a whole in a free state where no load is applied, and a bending allowance portion 4 extending horizontally in a lower portion (a height position at which a seated person's waist hits) of the shell plate 2a. Thus, the rearward tilt angle of the upper part is increased with the bending allowable portion 4 interposed therebetween. Needless to say, the backrest 2 bends around the bendable portion 4 in a side view, and as a result, most of the backrest 2 can tilt backward relative to the seat 1.

屈曲許容部４を構成する手段としては、屈曲許容部４の箇所の曲げ強度を小さくすれば良い。具体的には、水平状の薄肉部を形成したり、水平状の切目又はスリットを形成したりすれば良い。屈曲許容部４を挟んだ上下においてシェル板２ｂを分断することも可能である。或いは、背もたれを上下２つの部材に分離構成して、これらをピン（軸）や蝶番で連結することも可能である。更に、座１のシェル板１ａと背もたれ２のシェル板２ａとの連設部を弱化部と成したりピン連結部と成すことにより、座１と背もたれ２との連設部を屈曲させることも可能である。   As means for constituting the bending allowance portion 4, the bending strength at the location of the bending allowance portion 4 may be reduced. Specifically, a horizontal thin portion may be formed, or a horizontal cut or slit may be formed. It is also possible to divide the shell plate 2b on the upper and lower sides sandwiching the bending allowance portion 4. Alternatively, it is possible to separate the backrest into two upper and lower members and connect them with pins (shafts) or hinges. Further, the connecting portion between the shell plate 1a of the seat 1 and the shell plate 2a of the backrest 2 may be a weakened portion or a pin connecting portion, whereby the connecting portion between the seat 1 and the backrest 2 may be bent. Is possible.

フレーム構造体３は鋼の丸棒材から成っており、前後長手の左右ベース部５と、ベース部５の前端から立ち上がった座１よりも上方まで延びる側面視後傾姿勢の左右前足部６と、前足部６の上端から後方に延びる左右の梁状部７とを備えており、左右の梁状部７の後端は背もたれ２の後部背面に回り込んだ横長部７ａに形成されている。   The frame structure 3 is made of a steel round bar. The front and rear longitudinal left and right base portions 5 and the left and right forefoot portions 6 that are tilted backward from the side and extend upward from the seat 1 rising from the front end of the base portion 5. The left and right beam-like portions 7 extend rearward from the upper end of the front foot portion 6, and the rear ends of the left and right beam-like portions 7 are formed as horizontally long portions 7 a that wrap around the back of the backrest 2.

前足部６と梁状部７とで請求項に記載したメインフレームが構成されており、梁状部７には肘当て８を取付けることができる。左右前足部６は座１よりもやや下方の位置において前部補強ステー９で連結されている。そして、ベース部５の後端には側面視で前傾姿勢のフレーム状の補助支持部（補助フレームと言っても良い）１０を折り曲げ形成しており、左右の補助支持部１０の上端に横長部１０ａを折り曲げ形成し、横長部１０ａを座１の下面に取付けている。   The front foot portion 6 and the beam-like portion 7 constitute the main frame described in the claims, and an elbow rest 8 can be attached to the beam-like portion 7. The left and right forefoot portions 6 are connected by a front reinforcing stay 9 at a position slightly below the seat 1. A frame-like auxiliary support portion (which may be referred to as an auxiliary frame) 10 that is tilted forward as viewed from the side is bent at the rear end of the base portion 5, and horizontally long at the upper ends of the left and right auxiliary support portions 10. The portion 10 a is bent and the horizontally long portion 10 a is attached to the lower surface of the seat 1.

本実施形態では補助支持部１０はその弾性に抗して手前側に倒れ回動するように設定しているが、補助支持部１０を全く又は殆ど弾性変形しない構造とする場合は、図１に一点鎖線で示すようにつっかい棒状のバー１１を設けたらよい。図１に示すように、左右のベース部５を補強フレーム１２で連結しても良い。   In the present embodiment, the auxiliary support portion 10 is set so as to fall and rotate to the near side against its elasticity. However, when the auxiliary support portion 10 has a structure that hardly or hardly elastically deforms, FIG. As shown by the alternate long and short dash line, a stick-like bar 11 may be provided. As shown in FIG. 1, the left and right base portions 5 may be connected by a reinforcing frame 12.

梁状部７及び補助支持部１０の横長部７ａ，１０ａは背もたれ２の背面に取付けられている。これら横長部７ａ，１０ａの取付け手段としては、図２（Ｂ）に示すように、横長部７ａ，１０ａに嵌まるホルダー部材１４をビス１５でシェル板１ａ，１ｂに固定したり、図２（Ｃ）に示すように、横長部７ａ，１０ａに外側から重なる押さえ部材１６を介してビス１５で固定したり、図２（Ｄ）に示すように、シェル板１ａ，２ａに形成したボス部１７に押さえ板１８で押さえ保持したりというように、様々の方法を採用できる。各横長部７ａ，１０ａは、シェル板１ａ，２ａに対して相対回転可能な状態で取付けても良い。   The beam-shaped portion 7 and the horizontally long portions 7 a and 10 a of the auxiliary support portion 10 are attached to the back surface of the backrest 2. As a means for attaching the horizontally long portions 7a and 10a, as shown in FIG. 2 (B), the holder member 14 fitted to the horizontally long portions 7a and 10a is fixed to the shell plates 1a and 1b with screws 15, or FIG. As shown in FIG. 2C, the boss portion 17 is fixed to the laterally long portions 7a and 10a with a screw 15 via a pressing member 16 that overlaps from the outside, or is formed on the shell plates 1a and 2a as shown in FIG. Various methods can be employed such as holding and holding by the pressing plate 18. Each of the horizontally long portions 7a and 10a may be attached in a state of being rotatable relative to the shell plates 1a and 2a.

以上の構成において、着座した人が背もたれ２に凭れ掛かると、図２（Ａ）に一点鎖線で示すように、前足部６と梁状部７とから成るメインフレームがその弾性に抗して後傾動し、かつ、補助支持部１０がその下端を中心にして手前側に回動することにより、背もたれ２は後傾動しつつ座１は前進動しつつ下降動する。   In the above configuration, when a seated person leans on the backrest 2, the main frame composed of the forefoot part 6 and the beam-like part 7 resists its elasticity, as shown by a one-dot chain line in FIG. By tilting and rotating the auxiliary support portion 10 toward the front side with the lower end as the center, the backrest 2 tilts backward while the seat 1 moves downward while moving forward.

このため、単純な構造のフレーム構造体３でありながら、快適なリラックス状態を実現できる。また、座２が下方から補助支持部１０で支持されているため、前足部６及び梁状部７が限度以上に変形することはなく、このため過大な荷重によってメインフレームが曲がり変形したり破損したりすることはない。   For this reason, although it is the frame structure 3 of a simple structure, a comfortable relaxing state is realizable. Further, since the seat 2 is supported by the auxiliary support portion 10 from below, the forefoot portion 6 and the beam-like portion 7 are not deformed beyond the limit, and therefore the main frame is bent or deformed or damaged by an excessive load. There is nothing to do.

本願実施形態のようにロッキング時に補助支持部１０が前傾動すると、ロッキング時に座１が下降するが、下降位置は前部補強ステー９によって規制され、座２が前部補強ステー９に当接した後も背もたれ２が後傾する場合は、座２はその上部が上向きとなるように傾動する（このため、身体に対するフィット感が高くなる。）。   When the auxiliary support portion 10 tilts forward at the time of locking as in the embodiment of the present application, the seat 1 is lowered at the time of locking, but the lowered position is regulated by the front reinforcing stay 9, and the seat 2 comes into contact with the front reinforcing stay 9. When the backrest 2 tilts backward, the seat 2 tilts so that the upper part thereof is upward (for this reason, the fit to the body is enhanced).

補助支持部１０が前傾動する場合及びしない場合の何れにおいても、座１を補助支持部１０の上端に対して相対的に前後動し得る状態に取付けることが可能である。このように構成すると、背もたれ２の後傾動に連動して座１が前進動することが助長されて、より快適なロッキング姿勢を得ることができる。   It is possible to attach the seat 1 to a state in which it can move back and forth relatively with respect to the upper end of the auxiliary support portion 10 regardless of whether the auxiliary support portion 10 tilts forward or not. If comprised in this way, it will be encouraged that the seat 1 will move forward in conjunction with the back tilting of the backrest 2, and a more comfortable rocking posture can be obtained.

(2).第２〜３実施形態（図３）
図３（Ａ）では第２実施形態を示している。この実施形態では、フレーム構造体３の左右前足部６に固定した前部補強ステー９によって座１の前部を移動可能に支持している一方、補助支持部１０の上端に背もたれ２のうち屈曲許容部４よりも僅かに上部の位置を取付けている。この実施形態では、背もたれ２の後傾動に連動して座１は前進しつつ後傾動する。 (2). Second to third embodiments (FIG. 3)
FIG. 3A shows a second embodiment. In this embodiment, the front portion of the seat 1 is movably supported by the front reinforcement stay 9 fixed to the left and right forefoot portions 6 of the frame structure 3, while the backrest 2 is bent at the upper end of the auxiliary support portion 10. A position slightly above the allowable portion 4 is attached. In this embodiment, the seat 1 tilts backward while moving forward in conjunction with the backward tilt of the backrest 2.

この実施形態において、前部補強ステー９で座１を支持することに代えて又はこれに加えて、二点鎖線で示すように、前倒れ回動可能な座支柱２０で座１を支持することも可能である。言うまでもないが、座支柱２０はその弾性に抗して前傾動し得る。   In this embodiment, instead of or in addition to supporting the seat 1 with the front reinforcing stay 9, the seat 1 is supported by a seat support column 20 that can be turned forward and backward, as shown by a two-dot chain line. Is also possible. Needless to say, the seat column 20 can tilt forward against its elasticity.

図３（Ｂ）に示す第３実施形態では、補助支持部１０は基本的に剛体構造になっており、フレーム構造体３の梁状部７から垂下した座支持フレーム２１で座１の前後中途部を吊支している。この実施形態では、背もたれ２は補助支持部１０の上端を中心にして後傾動し、座１は前進動する。座支持フレーム２１は振り子状に形成されていて軽い力で前後揺動するため、背もたれ２の後傾動に連動して座１を的確に前進動させることができる。なお、フレーム構造体３のベース部５にはキャスター２２を設けても良い。   In the third embodiment shown in FIG. 3B, the auxiliary support portion 10 basically has a rigid structure, and the seat support frame 21 hangs down from the beam-like portion 7 of the frame structure 3 before and after the seat 1. The part is suspended. In this embodiment, the backrest 2 tilts backward about the upper end of the auxiliary support portion 10 and the seat 1 moves forward. Since the seat support frame 21 is formed in a pendulum shape and swings back and forth with a light force, the seat 1 can be accurately moved forward in conjunction with the backward tilting of the backrest 2. A caster 22 may be provided on the base portion 5 of the frame structure 3.

(3).第４〜第６実施形態（図４）
図４では第４〜第６実施形態を示している。（Ａ）（Ｂ）に示すのは第４実施形態であり、（Ａ）は概略側面図、（Ｂ）は概略正面図である。この実施形態は第１実施形態の変形例であり、第１実施形態との相違点は、座１を前後２つの部材に分離構成して（或いは前後中途部において屈曲するように構成して）、前後のパーツを蝶番やピンで回動可能に連結することにより、手前側の部分を跳ね上げ回動できるようにした点である。 (3). Fourth to sixth embodiments (FIG. 4)
FIG. 4 shows the fourth to sixth embodiments. (A) and (B) show the fourth embodiment, (A) is a schematic side view, and (B) is a schematic front view. This embodiment is a modification of the first embodiment, and the difference from the first embodiment is that the seat 1 is configured to be separated into two front and rear members (or configured to bend in the middle part of the front and rear). The front and rear parts are connected by a hinge or a pin so as to be rotatable, so that the front side part can be flipped up and rotated.

このように構成すると、複数の椅子を前後に嵌まり合った状態にスタッキングすることが可能になる（但し、前足部６とベース部５と補助支持部１０とからなる脚部は平面視でハ字状の形態にする必要がある。）。   With this configuration, it becomes possible to stack a plurality of chairs in a state where they are fitted back and forth (however, the leg portion including the front foot portion 6, the base portion 5, and the auxiliary support portion 10 has a plan view). It must be in the form of a letter.)

（Ｃ）（Ｄ）に示すのは第５実施形態であり、（Ｃ）は概略側面図、（Ｄ）は概略正面図である。この実施形態は、脚装置２２によってフレーム構造体３を支持したもので、脚装置２２は４本の足部２２ａを備えた４本足方式になっており、脚装置２２の上端には支基ベース２３を設けている。そして、支基ベース２３に前足部６を固着し、更に、座１は、支基ベース２３に設けたガイドローラ等の補助支持部２４によって前進動可能に支持されている。   (C) (D) shows a fifth embodiment, (C) is a schematic side view, and (D) is a schematic front view. In this embodiment, the frame structure 3 is supported by the leg device 22, and the leg device 22 is a four-leg system having four leg portions 22 a, and a support base is provided at the upper end of the leg device 22. A base 23 is provided. The front foot portion 6 is fixed to the support base 23, and the seat 1 is supported by an auxiliary support portion 24 such as a guide roller provided on the support base 23 so as to move forward.

この場合は、補助支持部２４は前後２カ所に配置しているが、１カ所のみに配置しても良い。また、この実施形態でも座１のうち手前寄りの広い範囲は後方に跳ね上げ回動できるようになっている。また、前部の左右足部２２ａの間隔と後部の左右足部２２ａとの間隔は相違しており、かつ、梁状部７は側面視で緩く後傾しており、このため、座１を跳ね上げ回動すると複数の椅子を前後に嵌め合わせた状態にスタッキングすることができる。   In this case, the auxiliary support portions 24 are arranged at two places in the front and rear, but may be arranged at only one place. Also in this embodiment, a wide range near the front of the seat 1 can be flipped up and rotated backward. Further, the distance between the front left and right foot portions 22a is different from the distance between the rear left and right foot portions 22a, and the beam-like portion 7 is gently tilted backward in a side view. When flipped up, a plurality of chairs can be stacked in a state where they are fitted back and forth.

（Ｅ）（Ｆ）に示すのは第６実施形態であり、（Ｅ）は概略側面図、（Ｆ）は概略正面図である。この実施形態は基本的には第５実施形態と同じであり、第５実施形態との大きな相違点は、脚装置２２がガスシリンダ２５と放射状の枝杆２６とを有する形式であるという点である。各枝杆２６の先端にはキャスター２７を設けている。また、補助支持部２４は棒材やパイプを折り曲げて形成されている。この実施形態ではスタッキング機能はなく、座１は跳ね上げ回動式にはなっている（勿論、スタッキングタイプと成すことは可能である）。   (E) (F) shows a sixth embodiment, (E) is a schematic side view, and (F) is a schematic front view. This embodiment is basically the same as the fifth embodiment, and the major difference from the fifth embodiment is that the leg device 22 has a gas cylinder 25 and a radial branch rod 26. is there. A caster 27 is provided at the tip of each branch rod 26. Further, the auxiliary support portion 24 is formed by bending a bar or a pipe. In this embodiment, there is no stacking function, and the seat 1 is of a flip-up rotation type (of course, it can be a stacking type).

(4).第７実施形態（図５）
図５では第７実施形態を示している。この実施形態では、フレーム構造体３の梁状部７は座１の下方に位置しており、座１は、梁状部７に対して相対的に前後動可能でかつ上下ずれ不能に取付けられている。また、補助支持部１０の上端は座１に対して相対的に前後動可能である。 (4). Seventh embodiment (FIG. 5)
FIG. 5 shows a seventh embodiment. In this embodiment, the beam-like portion 7 of the frame structure 3 is located below the seat 1, and the seat 1 is attached to the beam-like portion 7 so as to be able to move back and forth relatively and not vertically deviate. ing. Further, the upper end of the auxiliary support portion 10 can move back and forth relative to the seat 1.

着座した人が背もたれ２に凭れ掛かると、背もたれ２は沈みながら後傾しつつ座１は後傾しつつ前進動する。背もたれ２と座１の動きは、フレーム状の補助支持部１０の上端が座１の下面に設けたストッパー２８に当たることによって規制される。   When a seated person leans on the backrest 2, the backrest 2 moves backward while sinking and the seat 1 moves backward while tilting backward. The movement of the backrest 2 and the seat 1 is restricted by the upper end of the frame-like auxiliary support portion 10 coming into contact with a stopper 28 provided on the lower surface of the seat 1.

(5).その他
本願発明は、上記の実施形態の他にも様々に具体化することができ。例えばフレーム構造体の素材は棒材に限らず、金属パイプ製としたり樹脂製としたりすることも可能である。メインフレームは、前足部と梁状部との境界が曖昧な側面視円弧状に形成することも可能である。 (5). Others The present invention can be embodied in various ways other than the above embodiment. For example, the material of the frame structure is not limited to a bar, but may be made of a metal pipe or a resin. The main frame may be formed in an arc shape in a side view in which the boundary between the forefoot part and the beam-like part is ambiguous.

また、座の後端と背もたれの下端とを連続させる場合、必ずしも左右全長にわたって連結する必要はなく、左右方向に沿って飛び飛びの状態て連結してもよい。また、座と背もたれとを別々に製造して、他の連結具によって連結しても良いのである。   In addition, when the rear end of the seat and the lower end of the backrest are made continuous, it is not always necessary to connect over the entire length in the left and right, and may be connected in a state of jumping along the left and right direction. Further, the seat and the backrest may be manufactured separately and connected by another connecting tool.

第１実施形態を示す斜視図である。It is a perspective view which shows 1st Embodiment. 第１実施形態を示す図である。It is a figure which shows 1st Embodiment. 第２実施形態及び第３実施形態を示す図である。It is a figure which shows 2nd Embodiment and 3rd Embodiment. 第４〜６実施形態を示す図である。It is a figure which shows 4th-6th embodiment. 第７実施形態を示す図である。It is a figure which shows 7th Embodiment.

符号の説明Explanation of symbols

１ 座
２ 背もたれ
３ フレーム構造体
４ 屈曲許容部
５ ベース部
６ メインフレームを構成する前足部
７ メインフレームを構成する梁状部
１０ 補助支持部 DESCRIPTION OF SYMBOLS 1 Seat 2 Backrest 3 Frame structure 4 Bending tolerance part 5 Base part 6 Forefoot part which comprises main frame 7 Beam-like part which comprises main frame 10 Auxiliary support part

Claims (2)

座及び背もたれと、これらを支持するフレーム構造体とを備えており、前記フレーム構造体は、座及び背もたれを安定的に支持するためのベース部と、ベース部の前端部から立ち上がって片持ち梁の状態で座と背もたれとを支持するメインフレームとを備えており、メインフレームが撓み変形することによって背もたれの後傾動が許容されており、更に、背もたれの後傾動を許容しつつ座又は背もたれを下方から支持する補助支持部を備えている、
椅子。 A seat and a backrest and a frame structure for supporting the seat and the backrest. The frame structure includes a base portion for stably supporting the seat and the backrest, and a cantilever that stands up from the front end portion of the base portion. A main frame that supports the seat and the backrest in a state of being in a state where the main frame is bent and deformed to allow backward tilting of the backrest, and further to allow the rearward tilting of the backrest while allowing the seat or backrest to be tilted. It has an auxiliary support part that supports from below,
Chair. 前記座の後端と背もたれの下端とは一体に繋がっており、これら座と背もたれとの連結部か又は背もたれのうちその下部に屈曲許容部を形成することにより、背もたれの全体又は大部分が座に対して相対的に後傾動することが許容されている一方、
前記フレーム構造体のメインフレームは、前記ベース部の前端から略上向きに立ち上がって座よりも上方に延びる側面視後傾姿勢の前足部と、この前足部の上端から後方に延びて背もたれの背面に回り込む梁状部とを備えており、前記梁状部の後端に背もたれを取付けており、更に、前記補助支持部はベース部の後端から側面視で前傾姿勢で上向きに延びており、補助支持部の上端で座を下方から支持している、
請求項１に記載した椅子。 The rear end of the seat and the lower end of the backrest are integrally connected, and the whole or most of the backrest is seated by forming a bendable portion at the lower part of the connecting portion or the backrest of the seat and the backrest. While it is allowed to tilt backward relative to
The main frame of the frame structure has a forefoot part in a side-viewed rearward posture that stands substantially upward from the front end of the base part and extends upward from the seat, and extends rearward from the upper end of the front foot part to the back of the backrest. A backrest is attached to the rear end of the beam-like portion, and the auxiliary support portion extends upward from the rear end of the base portion in a forward inclined posture in a side view, The seat is supported from below by the upper end of the auxiliary support.
The chair according to claim 1.
JP2005057720A 2005-03-02 2005-03-02 Chair Expired - Fee Related JP4792234B2 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100725428B1 (en) 2006-09-27 2007-06-07 한기만 Settle tools for chair leg
JP2008093107A (en) * 2006-10-10 2008-04-24 Itoki Corp Chair
KR101240670B1 (en) 2010-10-25 2013-03-12 주식회사 코아스 Frame chair
JP2013132406A (en) * 2011-12-27 2013-07-08 Kokuyo Co Ltd Chair
JP2013248148A (en) * 2012-05-31 2013-12-12 Itoki Corp Nestable chair
JP2014004320A (en) * 2012-05-31 2014-01-16 Itoki Corp Chair capable of nesting

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS522656A (en) * 1975-06-24 1977-01-10 Nhk Spring Co Ltd Chair
JPS6048428U (en) * 1983-09-12 1985-04-05 朝日工業株式会社 chair seat material
JPS62129947U (en) * 1986-02-13 1987-08-17
JPH0467809A (en) * 1990-07-06 1992-03-03 Saami:Kk Chair
JPH07163437A (en) * 1993-12-14 1995-06-27 Uchida Yoko Co Ltd Chair
JPH0815446B2 (en) * 1990-04-10 1996-02-21 ペリー、チャールズ・オー Flexible stackable chair

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS522656A (en) * 1975-06-24 1977-01-10 Nhk Spring Co Ltd Chair
JPS6048428U (en) * 1983-09-12 1985-04-05 朝日工業株式会社 chair seat material
JPS62129947U (en) * 1986-02-13 1987-08-17
JPH0815446B2 (en) * 1990-04-10 1996-02-21 ペリー、チャールズ・オー Flexible stackable chair
JPH0467809A (en) * 1990-07-06 1992-03-03 Saami:Kk Chair
JPH07163437A (en) * 1993-12-14 1995-06-27 Uchida Yoko Co Ltd Chair

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100725428B1 (en) 2006-09-27 2007-06-07 한기만 Settle tools for chair leg
JP2008093107A (en) * 2006-10-10 2008-04-24 Itoki Corp Chair
KR101240670B1 (en) 2010-10-25 2013-03-12 주식회사 코아스 Frame chair
JP2013132406A (en) * 2011-12-27 2013-07-08 Kokuyo Co Ltd Chair
JP2013248148A (en) * 2012-05-31 2013-12-12 Itoki Corp Nestable chair
JP2014004320A (en) * 2012-05-31 2014-01-16 Itoki Corp Chair capable of nesting

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