JP2019030781A - Seat body support mechanism - Google Patents

Seat body support mechanism Download PDF

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JP2019030781A
JP2019030781A JP2018225862A JP2018225862A JP2019030781A JP 2019030781 A JP2019030781 A JP 2019030781A JP 2018225862 A JP2018225862 A JP 2018225862A JP 2018225862 A JP2018225862 A JP 2018225862A JP 2019030781 A JP2019030781 A JP 2019030781A
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seat body
seat
pair
support mechanism
chair
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JP6832906B2 (en
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工 熊澤
Takumi Kumazawa
工 熊澤
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Aichi Corp
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Aichi Corp
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Abstract

To favorably secure strength in sitting on a chair.SOLUTION: A seat body support mechanism supports a seat body. The seat body support mechanism includes a pair of right and left support parts. Each one of the pair of right and left support parts includes: a first portion having a shaft body for rotatably fixing the seat body; a second portion extending inward from a lower end of the first portion; and third portions extending diagonally forward and downward in a floor surface direction from the second portion at a lower side of an edge of the seat body. The third portions become front legs.SELECTED DRAWING: Figure 1

Description

本発明は、左右一対の脚部と座体とを備えたイスに関する。   The present invention relates to a chair provided with a pair of left and right legs and a seat.

従来から、ホールなどで使用するイスとして、未使用時に収容スペースを小さくすべく、座体を上方に跳ね上げた状態で前後方向に重ねて収容する、いわゆるネスティング可能に構成されたものが知られている。   Conventionally, as a chair used in a hall or the like, a so-called nestable structure is known in which a seat is flipped upward and stored in the front-rear direction so as to reduce the storage space when not in use. ing.

この種のイスでは、ネスティング状態においてコンパクトに収容できるようにすることだけでなく、イスとしての充分な強度を確保できるようにするために、左右一対の脚部それぞれをその上端においてフレームで連結し、このフレームで座体を位置決めすることが一般的である（特許文献１,２参照）。   In this type of chair, not only can it be stored compactly in the nesting state, but also a pair of left and right legs are connected by a frame at the upper end in order to ensure sufficient strength as a chair. In general, the seat is positioned with this frame (see Patent Documents 1 and 2).

特開２００５−２７９０３２号JP 2005-279032 A 特開２００５−２１８５３４号JP 2005-218534 A

また座体を跳ね上げることができるイスは、着席時の強度を確保することが好ましい。
本開示の目的は、イスの着席時の強度を好適に確保することである。 Moreover, it is preferable that the chair which can flip up a seat body ensures the intensity | strength at the time of sitting.
The objective of this indication is ensuring suitably the intensity | strength at the time of sitting of a chair.

また、本開示の第１の構成は、座体を支持する座体支持機構であって、座体支持機構は、左右一対の支持部を備え、前記左右一対の支持部それぞれは、前記座体を回動可能に固定する軸体が設けられる第一部と、前記第一部の下端から内側方向に延びる第二部と、前記座体の縁の下方において前記第二部から床面方向斜め前向き下方に延び出す第三部と、を備え、前記第三部が前脚となるように構成されている、座体支持機構である。
上記座体支持機構は、前記左右一対の支持部それぞれから延び出し、前記前脚よりも広い間隔を開けて設置される一対の後脚を備えてもよい。
また上記座体支持機構において、前記左右一対の支持部それぞれの左右外側の端面と、前記後脚のうち前記支持部と連結する部分における左右外側面と、は同一の平面上に位置してもよい。 In addition, a first configuration of the present disclosure is a seat support mechanism that supports a seat, and the seat support mechanism includes a pair of left and right support portions, and each of the pair of left and right support portions includes the seat body. And a second part extending inward from the lower end of the first part, and obliquely in the floor direction from the second part below the edge of the seat body. And a third part that extends forward and downward, and the third part is configured to be a front leg.
The seat support mechanism may include a pair of rear legs that extend from each of the pair of left and right support parts and are installed at a wider interval than the front legs.
In the seat support mechanism, the left and right outer end surfaces of the pair of left and right support portions and the left and right outer surfaces of the rear legs connected to the support portion may be located on the same plane. Good.

イスの全体構成を示す六面図（左側面図は書略）Six-sided view showing the overall structure of the chair (left side is omitted) 正面図におけるＡ−Ａ断面図AA sectional view in front view イスの特徴部分を示す斜視図Perspective view showing the characteristic part of the chair 別の実施形態におけるイスの特徴部分を示す斜視図The perspective view which shows the characteristic part of the chair in another embodiment 複数のイスをネスティング状態とする様子を示す図The figure which shows a mode that a plurality of chairs are made into a nesting state 別の実施形態におけるイスの特徴部分を示す斜視図The perspective view which shows the characteristic part of the chair in another embodiment 別の実施形態におけるイスの特徴部分を示す要部正面図The principal part front view which shows the characterizing part of the chair in another embodiment 別の実施形態における座体の枠体を示す要部右側面図The principal part right view which shows the frame of the seat in another embodiment

以下に、本発明を実施するための形態を図と共に説明する。
（１）構成
イス１は、図１に示すように、背もたれ１０と、座体２０と、左右一対の脚部３０，４０と、脚部３０，４０を左右方向に連結する支持フレーム５０と、を備え、同一のイス１を前後方向に重ねて収納（いわゆるネスティング）可能なネスティングチェアーである。 Below, the form for implementing this invention is demonstrated with a figure.
(1) Configuration As shown in FIG. 1, the chair 1 includes a backrest 10, a seat body 20, a pair of left and right leg portions 30 and 40, and a support frame 50 that couples the leg portions 30 and 40 in the left-right direction; And a nesting chair capable of storing the same chair 1 in the front-rear direction (so-called nesting).

背もたれ１０は、板状の部材を、平面視で後方に向けて凸となる円弧状とすることで、全体として着席者の背中に沿うような形状とされたものであり、その上端側から後方に向けて延出する帯状の帯状片１１と、左右両側の下端それぞれから下方に延びて支持フレーム５０に連結される一対の背側連結片１３と、を備えている。   The backrest 10 has a plate-like member formed into an arc shape that protrudes rearward in a plan view, and is shaped so as to follow the back of the seated person as a whole. And a pair of back-side connecting pieces 13 that extend downward from the lower ends on both the left and right sides and are connected to the support frame 50.

これらのうち、帯状片１１は、背もたれ１０上端の左右端部側それぞれから後方に延出する部位と、該部位それぞれを左右方向に連結する帯状の部位とからなり、これにより、背もたれ１０上端と帯状片１１とで囲まれた横長の空間を形成している。この帯状片１１における帯状の部位は、イス１を移動させる際などの取っ手として使用される。なお、この帯状片１１は、この構成に限らず、図４（ａ）に示すように、帯状の部位のみからなるものとし、横長の空間が形成されていない構成としてもよい。   Among these, the strip 11 includes a portion extending rearward from each of the left and right end portions of the upper end of the backrest 10 and a strip-shaped portion connecting the respective portions in the left-right direction. A horizontally long space surrounded by the strips 11 is formed. The band-shaped portion of the band-shaped piece 11 is used as a handle when the chair 1 is moved. In addition, this strip | belt piece 11 shall consist only of a strip | belt-shaped site | part as shown to Fig.4 (a) not only in this structure, but it is good also as a structure in which a laterally long space is not formed.

また、一対の背側連結片１３は、座体２０の後端側を左右から挟む位置関係で配置され、図２に示すように、この座体２０を、左右方向に延びる軸体１５を中心として回動可能に固定している。これにより、座体２０を着座面が地面に沿った面となるように倒す使用状態（図３（ａ））と、この着座面を地面と交差する面となるように座体２０を跳ね上げる収容状態（図３（ｂ））と、の間で回動可能となる。   Further, the pair of back-side connecting pieces 13 are arranged in a positional relationship sandwiching the rear end side of the seat body 20 from the left and right, and as shown in FIG. 2, the seat body 20 is centered on a shaft body 15 extending in the left-right direction. It is fixed so that it can rotate. Thereby, the use state (FIG. 3A) in which the seating body 20 is tilted so that the seating surface becomes a surface along the ground, and the seating body 20 is flipped up so that the seating surface becomes a surface intersecting the ground. It can be rotated between the accommodated state (FIG. 3B).

この背もたれ１０は、座体２０の上方において支持フレーム５０に支持されており、これにより、図３（ｃ）に示すように、座体２０の後端および背もたれ１０の下端に囲まれた横長の空間が形成されている。   The backrest 10 is supported by the support frame 50 above the seat body 20, and as a result, as shown in FIG. 3C, the backrest 10 is horizontally long surrounded by the rear end of the seat body 20 and the lower end of the backrest 10. A space is formed.

座体２０は、平面視で四角形の枠体２１に囲まれた領域に、着座面となるシート状部材２３が張り掛けられたものである。本実施形態では、枠体２１が、図２に示すように、表側枠体２１ａと裏側枠体２１ｂとが表裏方向に重ねられ、表側枠体２１ａにシート状部材２３が張り掛けられ、裏側枠体２１ｂに後述する位置決め部材１００が設けられている。なお、この座体２０は、その後端部から前端部に向かう上り勾配の傾斜面となっており（右側面図参照）、その前端部は下方向に垂れ下がる垂下片となっている。   The seat body 20 is configured such that a sheet-like member 23 serving as a seating surface is stretched over a region surrounded by a rectangular frame body 21 in plan view. In the present embodiment, as shown in FIG. 2, the front side frame 21a and the back side frame 21b are overlapped in the front and back direction, and the sheet member 23 is stretched over the front side frame 21a. A positioning member 100 described later is provided on the body 21b. The seat body 20 is an inclined surface having an upward slope from the rear end portion to the front end portion (see the right side view), and the front end portion is a hanging piece that hangs downward.

この座体２０には、背もたれ１０の一対の背側連結片１３に対応する位置（後端側における左右両側）それぞれに、背もたれ１０に対して座体２０を固定するための一対の座側固定片２５が備えられ、ここに上述した軸体１５を通して固定することにより、座体２０全体が背もたれ１０に対して回転可能となる（図３（ａ）（ｂ）参照）。   The seat body 20 has a pair of seat-side fixings for fixing the seat body 20 to the backrest 10 at positions corresponding to the pair of back-side connecting pieces 13 of the backrest 10 (left and right sides on the rear end side). A piece 25 is provided, and the seat body 20 as a whole can be rotated with respect to the backrest 10 by fixing through the shaft body 15 described above (see FIGS. 3A and 3B).

また、この座体２０における枠体２１のうち、左右側方において前後に延びる左片および右片それぞれの裏面には、座体２０を着席可能な状態に位置決めする一対の位置決め部材１００が設けられている。   In addition, a pair of positioning members 100 for positioning the seat body 20 in a seatable state are provided on the back surfaces of the left and right pieces extending forward and backward in the left and right sides of the frame body 21 in the seat body 20. ing.

この位置決め部材１００は、座体２０裏面から突出したものであり、本実施形態では、側面視で前後方向の幅が先端に向けて狭くなる形状（本実施形態では台形状）となっている。この座体２０からの突出量は、座体２０への着席でシート状部材２３が変形した場合におけるシート状部材２３の下端が、支持フレーム５０上端よりも上方にある状態で支持フレーム５０に接触する位置関係となるように定められている。なお、本実施形態において、位置決め部材１００は、座体２０の裏面から左右方向内側に向けて傾斜するように突出しており、座体２０の左右外側面よりも内側となる位置において支持フレーム５０と接触する（図１の正面図参照）。   This positioning member 100 protrudes from the back surface of the seat body 20, and in this embodiment, the width in the front-rear direction becomes narrower toward the tip in a side view (in the present embodiment, a trapezoidal shape). The amount of protrusion from the seat body 20 is in contact with the support frame 50 in a state where the lower end of the sheet-like member 23 is above the upper end of the support frame 50 when the seat-like member 23 is deformed when seated on the seat body 20. It is determined to be a positional relationship. In the present embodiment, the positioning member 100 protrudes from the rear surface of the seat body 20 so as to incline inward in the left-right direction, and is positioned on the inner side of the left and right outer surfaces of the seat body 20. Contact (refer to the front view of FIG. 1).

ここで、図２に示すように、座体２０において着席者の坐骨結節に対応する前後位置（つまり着席者の坐骨結節が位置すると想定される前後方向に沿った位置）を基準位置ａと仮定すると、位置決め部材１００は、枠体２１の裏面のうち、基準位置ａを含めて前後方向に拡がる所定領域ｂの前後端それぞれから突出する一組の突出片１０１と、突出片１０１をそれぞれの先端側で連結する連結片１０３と、からなり、連結片１０３が支持フレーム５０に接触することにより座体２０を位置決めする。ここで、位置決め部材１００は、一組の突出片１０１と連結片１０３とからなる構成に限られず、例えば、図４（ｂ）に示すように、枠体２１の裏面のうち、所定領域ｂ全域にわたって突出する突起として形成してもよい。   Here, as shown in FIG. 2, it is assumed that the front and rear positions corresponding to the seated person's sciatic nodules (that is, the position along the front and rear direction where the seated person's sciatic nodules are located) are the reference position a. Then, the positioning member 100 includes a pair of projecting pieces 101 projecting from the front and rear ends of the predetermined region b extending in the front-rear direction including the reference position a on the back surface of the frame body 21, and the projecting pieces 101 at the front ends. The seat 20 is positioned when the connecting piece 103 comes into contact with the support frame 50. Here, the positioning member 100 is not limited to a configuration including a pair of protruding pieces 101 and connecting pieces 103, and for example, as shown in FIG. You may form as protrusion which protrudes over.

また、位置決め部材１００それぞれは、図３（ｂ）に示すように、一方における先端（連結片１０３）から他方における先端（連結片１０３）が、左右方向に延びる補強フレーム１０５によって接続されている。この補強フレーム１０５は、位置決め部材１００をそれぞれの前後端においてのみ接続した構成とされているが、この構成に限られず、図４（ｃ）に示すように、板状の部材を採用し、位置決め部材１００の先端それぞれを前後幅全域にわたって接続した構成としてもよく、図６（ｂ）に示すように、これを設けない構成としてもよい。   In addition, as shown in FIG. 3B, each positioning member 100 is connected by a reinforcing frame 105 extending in the left-right direction from one end (connecting piece 103) to the other end (connecting piece 103). The reinforcing frame 105 is configured such that the positioning members 100 are connected only at the front and rear ends. However, the present invention is not limited to this configuration, and a plate-shaped member is employed as shown in FIG. It is good also as a structure which connected each front-end | tip of the member 100 over the whole front-back width, and it is good also as a structure which does not provide as shown in FIG.6 (b).

脚部３０,４０は、支持フレーム５０における端部側それぞれの下部から斜め前方へ延びるように設けられた前脚３１，４１と、支持フレーム５０において前脚３１，４１よりも外側の端部側それぞれの下部から斜め後方へ延びるように設けられた後脚３３，４３と、各脚の下端に設けられたキャスター３５，４５を備えている。なお、イス１としては、これらキャスター３５，４５を備えていない構成を採用してもよい。   The leg portions 30, 40 are respectively provided at front legs 31, 41 provided so as to extend obliquely forward from the lower portions on the end sides of the support frame 50, and on the end sides on the outer side of the front legs 31, 41 in the support frame 50. Rear legs 33 and 43 provided so as to extend obliquely rearward from the lower part, and casters 35 and 45 provided at the lower ends of the legs are provided. In addition, as the chair 1, you may employ | adopt the structure which is not provided with these casters 35 and 45. FIG.

なお、脚部材３０，４０は、それぞれの間隔が前脚３１，４１側よりも、後脚３３，４３側において左右に広く形成され、これにより、同一形状のイス１を前後方向に積重ねられるように構成している。   In addition, the leg members 30 and 40 are formed wider on the left and right sides on the rear legs 33 and 43 side than on the front legs 31 and 41 side so that the chairs 1 having the same shape can be stacked in the front-rear direction. It is composed.

支持フレーム５０は、左右方向に延びる板状のフレーム本体５１と、フレーム本体５１のける左右方向の端部側それぞれの上部から上方に延びて背もたれ１０と連結される一対の支持側連結片５３と、を備えている。このフレーム本体５１は、図２に示すように、部材としての上面が位置決め部材１００との接触領域となり、側面視で位置決め部材１００の前端面をこの前端面に沿って延長した線と重なる位置まで、部材としての前端が到達している。   The support frame 50 includes a plate-like frame main body 51 extending in the left-right direction, and a pair of support-side connection pieces 53 extending upward from the respective upper ends of the left and right ends of the frame main body 51 and connected to the backrest 10. It is equipped with. As shown in FIG. 2, the frame main body 51 has an upper surface as a contact region with the positioning member 100 and a position where the front end surface of the positioning member 100 overlaps with a line extending along the front end surface in a side view. The front end as a member has reached.

このフレーム本体５１における前端は、下方向に傾斜する曲面(本実施形態では側面視で半円形)となっており、ここに位置決め部材１００の先端に形成された凸部１０７が嵌合するように構成されている。   The front end of the frame main body 51 is a curved surface that is inclined downward (in this embodiment, a semicircular shape in a side view), and a convex portion 107 formed at the tip of the positioning member 100 is fitted therein. It is configured.

以上のような構成のイス１は、座体２０の着座面を地面と交差する面となるように座体２０を跳ね上げることにより、図５に示すように、これを前後方向に重ねることができる状態となり未使用時の収容スペースを小さくすることができる。   The chair 1 configured as described above can be stacked in the front-rear direction as shown in FIG. 5 by flipping up the seat body 20 so that the seating surface of the seat body 20 is a surface intersecting the ground. It becomes a state which can be made, and the accommodation space when not in use can be reduced.

（２）変形例
以上、本発明の実施の形態について説明したが、本発明は、上記実施形態に何ら限定されることはなく、本発明の技術的範囲に属する限り種々の形態をとり得ることはいうまでもない。 (2) Modifications Embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and can take various forms as long as they belong to the technical scope of the present invention. Needless to say.

例えば、上記実施形態においては、支持フレーム５０のフレーム本体５１として左右方向に延びる板状のものを採用した構成を例示した。しかし、このフレーム本体５１は、この構成に限らず、例えば、図６に示すように、左右方向に延びる円柱状のものを採用してもよい。   For example, in the said embodiment, the structure which employ | adopted the plate-shaped thing extended in the left-right direction as the frame main body 51 of the support frame 50 was illustrated. However, the frame main body 51 is not limited to this configuration, and for example, as shown in FIG.

この構成では、位置決め部材１００がフレーム本体５１における曲面状の外周面に沿って弾性変形しやすくなることを考慮し、側面視で位置決め部材１００の前端面をこの前端面に沿って延長した線と重なる位置よりも一定距離だけ後方まで、部材としての前端を到達させる前後幅を有したものとしてもよい。   In this configuration, in consideration of the fact that the positioning member 100 is easily elastically deformed along the curved outer peripheral surface of the frame main body 51, the front end surface of the positioning member 100 is extended along the front end surface in a side view. It is good also as what has the front-back width which makes the front end as a member reach | attain to the back of a fixed distance rather than the overlapping position.

また、上記実施形態において、支持フレーム５０と位置決め部材１００との接触領域は、座体２０の位置決めやイス１としての強度確保の観点から、以下のような構成としてもよい。具体的には、図７に示すように、支持フレーム５０のうち、位置決め部材１００との接触領域と隣接する領域に、位置決め部材１００が左右方向の内側へ変位することを規制する内側規制片５５や、位置決め部材１００が左右方向の外側へ変位することを規制する外側規制片５７などを設ける、といった構成である。   Moreover, in the said embodiment, the contact area of the support frame 50 and the positioning member 100 is good also as following structures from a viewpoint of positioning of the seat body 20, and ensuring the intensity | strength as the chair 1. As shown in FIG. Specifically, as shown in FIG. 7, an inner regulating piece 55 that regulates displacement of the positioning member 100 inward in the left-right direction in an area adjacent to the contact area with the positioning member 100 in the support frame 50. Alternatively, an outer restriction piece 57 that restricts the positioning member 100 from being displaced outward in the left-right direction is provided.

ここでは、支持フレーム５０側に突起を形成し、この突起における左右方向の外側が内側規制片５５、左右方向の内側が外側規制片５７として機能すると共に、位置決め部材１００側に、これら規制片５５，５７からなる突起の先端において支持フレーム５０と接触するように位置決め孔１０９を形成した構成を例示している。しかし、内側規制片５５と外側規制片５７とはそれぞれ別の部材として形成されたものとしてもよいし、これら規制片５５，５７を、位置決め部材１００の左右方向の外側および内側それぞれに配置した構成としてもよい。   Here, protrusions are formed on the support frame 50 side, and the outer side in the left-right direction functions as the inner restriction piece 55 and the inner side in the left-right direction functions as the outer restriction piece 57, and these restriction pieces 55 are located on the positioning member 100 side. , 57, the positioning hole 109 is formed so as to be in contact with the support frame 50 at the tip of the projection. However, the inner restricting piece 55 and the outer restricting piece 57 may be formed as separate members, and the restricting pieces 55 and 57 are arranged on the outer side and the inner side in the left-right direction of the positioning member 100, respectively. It is good.

また、上記実施形態においては、位置決め部材１００が側面視で前後方向の幅が先端に向けて直線的に狭くなる台形状となっている構成を例示した。しかし、この位置決め部材１００は、側面視で前後方向の幅が先端に向けて狭くなる形状であれば、台形状以外の形状としてもよい。具体的には、図８に示すように、側面視で前後方向の幅が先端に向けて曲線的に狭くなる形状とすることなどが考えられる。   Moreover, in the said embodiment, the structure which the positioning member 100 becomes the trapezoid shape by which the width of the front-back direction becomes narrow linearly toward a front-end | tip in side view was illustrated. However, the positioning member 100 may have a shape other than the trapezoidal shape as long as the width in the front-rear direction becomes narrower toward the tip in a side view. Specifically, as shown in FIG. 8, it can be considered that the width in the front-rear direction is curvilinearly narrowed toward the tip in a side view.

（３）作用，効果
このように構成されたイス１であれば、座体２０の直下に配置した支持フレーム５０で荷重を受ける構造を採用しているにも拘らず、座体２０への着席でシート状部材２３が変形したとしても、その下端が支持フレーム５０に接触することはなく、着席に伴うシート状部材２３の変形が妨げられることがない。そのため、上記構造によりネスティング状態におけるコンパクト性を確保しつつ、好適にイス１としての座り心地を向上させることができる。 (3) Operation and Effect The chair 1 configured as described above is seated on the seat body 20 in spite of adopting a structure in which a load is received by the support frame 50 disposed immediately below the seat body 20. Even if the sheet-like member 23 is deformed, the lower end thereof does not come into contact with the support frame 50, and the deformation of the sheet-like member 23 accompanying the seating is not hindered. Therefore, the seating comfort as the chair 1 can be preferably improved while ensuring compactness in the nesting state by the above structure.

また、上記構成のようなイス１では、着席者の坐骨結節に対応する前後位置、つまり着席者の坐骨結節が位置すると想定される前後方向に沿った位置が、着席者の前後方向における重心位置となりうるため、少なくとも座体２０における枠体２１の裏面のうち、この位置を基準位置ａとして前後に延びる領域ｂで荷重を受けられるようにすることが、イス１としての着席時の強度を確保するために有効である。この点、この上記構成では、位置決め部材１００により、座体２０において着席者の重心位置となりうる領域ｂで荷重を受けることができるため、イス１としての着席時の強度を好適に確保することができる。   Further, in the chair 1 having the above-described configuration, the front-rear position corresponding to the sciatic nodule of the seated person, that is, the position along the front-rear direction in which the seated person's sciatic nodule is located, Therefore, at least the back surface of the frame body 21 in the seat body 20 can receive a load in a region b extending in the front-rear direction with this position as the reference position a, thereby ensuring the strength when the chair 1 is seated. It is effective to do. In this regard, in this configuration, since the positioning member 100 can receive a load in the region b where the seated body 20 can be the center of gravity of the seated person, it is possible to suitably ensure the strength when seated as the chair 1. it can.

また、一組の突出片１０１と連結片１０３とで位置決め部材１００を構成した場合には、この枠状の構造により弾性変形を生じやすくすることができるため、着席状態での荷重を超える大きさの荷重でのみ弾性変形する設計としておくことにより、着席時に生じる大きな荷重を吸収する機能を持たせることができる。   In addition, when the positioning member 100 is constituted by a pair of protruding pieces 101 and connecting pieces 103, this frame-like structure can easily cause elastic deformation, so that it exceeds the load in the seated state. By being designed to be elastically deformed only by a load of 1, it is possible to have a function of absorbing a large load generated when sitting.

また、上記構成では、位置決め部材１００における前後方向の幅が先端に向けて狭くなっているため、この前後幅にあわせて、支持フレーム５０において位置決め部材１００と接触する領域の前後幅も短くすることができ、これによりネスティング時のコンパクト性をより向上させることができる。   In the above configuration, since the width in the front-rear direction of the positioning member 100 is narrowed toward the tip, the front-rear width of the region in contact with the positioning member 100 in the support frame 50 is also shortened in accordance with the front-rear width. Thus, the compactness at the time of nesting can be further improved.

また、上記構成では、位置決め部材１００それぞれを補強フレーム１０５によって接続することで、イス１としての着席時の強度をより向上させることができる。
また、上記構成では、位置決め部材１００が座体２０の左右外側面よりも内側となる位置において支持フレーム５０と接触するため、この接触領域までに一定の距離が確保される結果、着席者の指先などが挟まるといった事態を未然に防止することができる。 Moreover, in the said structure, the strength at the time of sitting as the chair 1 can be improved more by connecting each positioning member 100 with the reinforcement frame 105. FIG.
In the above configuration, since the positioning member 100 contacts the support frame 50 at a position inside the left and right outer surfaces of the seat body 20, a certain distance is ensured up to the contact area. It is possible to prevent a situation such as being caught.

また、支持フレーム５０に内側規制片５５や外側規制片５７を設けた構成であれば、支持フレーム５０の規制片５５，５７が位置決め部材１００との接触領域と隣接する領域に配置され、両者の位置関係が明確になっているため、利用者にとって、座体２０の着席可能な状態への位置決めを確実かつ容易に行うことができるようになる。   Further, if the inner restriction piece 55 and the outer restriction piece 57 are provided on the support frame 50, the restriction pieces 55 and 57 of the support frame 50 are arranged in an area adjacent to the contact area with the positioning member 100, Since the positional relationship is clear, the user can reliably and easily position the seat 20 in a seatable state.

また、内側規制片５５を形成した構成においては、着席時の荷重で位置決め部材１００が左右方向内側へ変位させられてしまうような場合でも、この変位が内側規制片５５により規制されるため、イス１としての着席時の強度をより向上させることができる。   Further, in the configuration in which the inner restriction piece 55 is formed, even when the positioning member 100 is displaced inward in the left-right direction due to the load at the time of sitting, the displacement is restricted by the inner restriction piece 55. The strength when seated as 1 can be further improved.

また、外側規制片５７を形成した構成においては、着席時など大きな荷重が加わって位置決め部材１００が左右方向外側へ変位させられるような場合でも、この変位が外側規制片５７により規制されるため、このような荷重による意図しない変形を防止することができる。   Further, in the configuration in which the outer regulating piece 57 is formed, even when a large load is applied, such as when seated, and the positioning member 100 is displaced outward in the left-right direction, this displacement is regulated by the outer regulating piece 57. Such unintended deformation due to the load can be prevented.

１…イス、１０…背もたれ、１１…帯状片、１３…背側連結片、１５…軸体、２０…座体、２１…枠体、２１ａ…表側枠体、２１ｂ…裏側枠体、２３…シート状部材、２５…座側固定片、３０…脚部、３１…前脚、３３…後脚、３５…キャスター、４０…脚部、４１…前脚、４３…後脚、４５…キャスター、５０…支持フレーム、５１…フレーム本体、５３…支持側連結片、５５…内側規制片、５７…外側規制片、１００…位置決め部材、１０１…突出片、１０３…連結片、１０５…補強フレーム、１０７…凸部、１０９…位置決め孔。   DESCRIPTION OF SYMBOLS 1 ... Chair, 10 ... Backrest, 11 ... Band-shaped piece, 13 ... Back side connection piece, 15 ... Shaft body, 20 ... Seat body, 21 ... Frame body, 21a ... Front side frame body, 21b ... Back side frame body, 23 ... Sheet 25: seat-side fixing piece, 30 ... leg, 31 ... front leg, 33 ... rear leg, 35 ... caster, 40 ... leg, 41 ... front leg, 43 ... rear leg, 45 ... caster, 50 ... support frame , 51 ... frame main body, 53 ... support-side connecting piece, 55 ... inner regulating piece, 57 ... outer regulating piece, 100 ... positioning member, 101 ... projecting piece, 103 ... connecting piece, 105 ... reinforcing frame, 107 ... convex part, 109 ... positioning hole.

Claims (3)

座体を支持する座体支持機構であって、
座体支持機構は、左右一対の支持部を備え、
前記左右一対の支持部それぞれは、前記座体を回動可能に固定する軸体が設けられる第一部と、前記第一部の下端から内側方向に延びる第二部と、前記座体の縁の下方において前記第二部から床面方向斜め前向き下方に延び出す第三部と、を備え、
前記第三部が前脚となるように構成されている、座体支持機構。 A seat support mechanism for supporting the seat;
The seat support mechanism includes a pair of left and right support portions,
Each of the pair of left and right support parts includes a first part provided with a shaft body that rotatably fixes the seat body, a second part extending inward from the lower end of the first part, and an edge of the seat body A third part extending downward from the second part obliquely forward in the floor direction from the second part below,
A seat support mechanism configured such that the third part is a front leg. 請求項１に記載の座体支持機構であって、
前記左右一対の支持部それぞれから延び出し、前記前脚よりも広い間隔を開けて設置される一対の後脚を備える、座体支持機構。 The seat support mechanism according to claim 1,
A seat body support mechanism comprising a pair of rear legs extending from each of the pair of left and right support parts and installed at a wider interval than the front legs. 請求項２に記載の座体支持機構であって、
前記左右一対の支持部それぞれの左右外側の端面と、前記後脚のうち前記支持部と連結する部分における左右外側面と、は同一の平面上に位置する、座体支持機構。 The seat support mechanism according to claim 2,
The left and right outer end surfaces of each of the pair of left and right support portions and the left and right outer surfaces of the rear legs connected to the support portions are located on the same plane.
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JP2008113937A (en) * 2006-11-07 2008-05-22 Kokuyo Co Ltd Chair
KR20100008027U (en) * 2009-02-04 2010-08-12 서원호 Chair
JP2011136101A (en) * 2009-12-29 2011-07-14 Itoki Corp Stacking chair
US20110175412A1 (en) * 2010-01-21 2011-07-21 Pro-Cord S.P.A. Nestable chair with seat rotation and stop arrangement
JP2012110668A (en) * 2010-11-05 2012-06-14 Okamura Corp Chair

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070284920A1 (en) * 2006-06-09 2007-12-13 Hni Technologies Inc. Tablet arm for nesting chair
JP2008113937A (en) * 2006-11-07 2008-05-22 Kokuyo Co Ltd Chair
KR20100008027U (en) * 2009-02-04 2010-08-12 서원호 Chair
JP2011136101A (en) * 2009-12-29 2011-07-14 Itoki Corp Stacking chair
US20110175412A1 (en) * 2010-01-21 2011-07-21 Pro-Cord S.P.A. Nestable chair with seat rotation and stop arrangement
JP2012110668A (en) * 2010-11-05 2012-06-14 Okamura Corp Chair

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