JP6858624B2 - Optional parts mounting structure, optional parts, and fixtures - Google Patents

Optional parts mounting structure, optional parts, and fixtures Download PDF

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JP6858624B2
JP6858624B2 JP2017074011A JP2017074011A JP6858624B2 JP 6858624 B2 JP6858624 B2 JP 6858624B2 JP 2017074011 A JP2017074011 A JP 2017074011A JP 2017074011 A JP2017074011 A JP 2017074011A JP 6858624 B2 JP6858624 B2 JP 6858624B2
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mounting
optional
mounting member
base
contact
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JP2018174991A (en
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益永　浩
浩 益永
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Okamura Corp
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Okamura Corp
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Priority to CN201790000938.0U priority patent/CN210130611U/en
Priority to US16/307,795 priority patent/US10966530B2/en
Priority to EP17810424.6A priority patent/EP3469955A4/en
Priority to PCT/JP2017/021467 priority patent/WO2017213251A1/en
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Description

本発明は、椅子等の什器のオプション部材の取付構造、オプション部材、及び什器
に関する。 The present invention relates to a mounting structure for optional members of furniture such as chairs, optional members, and fixtures.

従来、椅子の背凭れには、オプション部材として、ランバーサポートやヘッドレスト、ハンガー等が設けられている場合がある。 Conventionally, the backrest of a chair may be provided with a lumbar support, a headrest, a hanger, or the like as optional members.

例えば、特許文献１には、ハンガーやヘッドレストといったオプション部材を強固に、且つ容易に背凭れに取り付けることができる椅子（什器）が開示されている。特許文献１に開示されているオプション部材は、椅子の背凭れの本体支持部材の被取付面に面接触により取り付け可能とされている。 For example, Patent Document 1 discloses a chair (furniture) in which optional members such as hangers and headrests can be firmly and easily attached to the backrest. The optional member disclosed in Patent Document 1 can be attached to the surface to be attached to the main body support member of the backrest of the chair by surface contact.

また、特許文献２には、オプション部材の取り付けや交換、及び位置調整を容易に行うことのできる椅子（什器）が開示されている。特許文献２に開示された椅子では、ハンガー（オプション部材）の取付部材の前側取付部材と後側取付部材がそれぞれ背凭れの上枠部の当接面に当接した状態で、前側取付部材と後側取付部材との間で上枠部を保持するように構成されている。 Further, Patent Document 2 discloses a chair (furniture) capable of easily attaching and exchanging optional members and adjusting the position. In the chair disclosed in Patent Document 2, the front mounting member and the rear mounting member of the hanger (optional member) mounting member are in contact with the contact surface of the upper frame portion of the backrest, respectively. It is configured to hold the upper frame portion between the rear mounting member and the rear mounting member.

特開２０１４−０７９４９２号公報Japanese Unexamined Patent Publication No. 2014-07492 特開２０１５−１４４６４３号公報JP-A-2015-144643

上述の特許文献１及び特許文献２をはじめとする従来の椅子に形成されたオプション部材の被取付部は、椅子全体のデザインに調和すると共に、着座者の体型に沿うようにして着座時の快適度を高めるために、前後方向や上下方向等の種々の方向に沿って屈曲又は湾曲する部分を有する、或いは突出する部分を有する。また、被取付部に取り付け可能なオプション部材またはオプション取付部材は、被取付部の上述の形状に即した形状を有する。 The attached portions of the optional members formed on the conventional chairs such as the above-mentioned Patent Documents 1 and 2 are in harmony with the design of the entire chair and are comfortable when seated so as to fit the body shape of the seated person. In order to increase the degree, it has a portion that bends or curves along various directions such as a front-rear direction and a vertical direction, or has a protruding portion. Further, the optional member or the optional mounting member that can be attached to the attached portion has a shape that conforms to the above-mentioned shape of the attached portion.

しかしながら、オプション部材又はオプション取付部材が金型で成形された場合に、成形時の公差等の要因によって被取付部の形状と前述の部材の形状が完全にフィットしない（面接触しない、又は互いの接触面が極めて小さくなる）場合がある。このように互いの形状がフィットしていない状態でオプション部材又はオプション取付部材が背凭れの被取付部に取り付けられると、がたつきが生じる虞や局所的な過負荷を招く虞があり、オプション部材と被取付部材との取付状態が堅牢に維持されないという問題があった。 However, when the optional member or the optional mounting member is molded by the mold, the shape of the mounted portion and the shape of the above-mentioned member do not completely fit (no surface contact or mutual contact) due to factors such as tolerances during molding. The contact surface becomes extremely small). If the optional member or the optional mounting member is attached to the mounted portion of the backrest in a state where the shapes of the optional members are not fitted to each other in this way, there is a risk of rattling or a local overload, which is an option. There is a problem that the mounting state of the member and the mounted member is not maintained robustly.

本発明は、上述の事情を鑑みてなされたものであり、オプション部材と被取付部との取付状態が堅牢に維持され得るオプション部材の取付構造を提供する。 The present invention has been made in view of the above circumstances, and provides an optional member mounting structure capable of firmly maintaining the mounted state of the optional member and the mounted portion.

上記目的を達成するため、本発明に係るオプション部材の取付構造は、什器の被取付面に取り付け可能に構成されたオプション部材の取付構造であって、前記被取付部材の被取付面に当接する第一取付部材を有し、前記第一取付部材は、上下方向に延びる第一基部と、前記第一基部の下縁部から漸次下側に向かう斜め方向に延び、前記被取付部に当接する取付部と、を有し、前記取付部は、前後方向に貫通し、前記第一基部から外周縁へ向かう方向に延びるとともに、前記外周縁から外方に開口する切欠きによって分割されるとともに、前記切欠きを挟んで隣接し合い、前記第一取付部材を前記被取付部材に取り付ける際に、前記被取付面に当接しつつ前記被取付面の形状に応じて変位する複数の分割部を有し、前記切欠きは、前記第一基部に向かって斜め上方に収束していることを特徴とする。 In order to achieve the above object, the mounting structure of the optional member according to the present invention is a mounting structure of the optional member configured to be mountable on the mounted surface of the fixture, and abuts on the mounted surface of the mounted member. It has a first mounting member, and the first mounting member extends in an oblique direction gradually downward from the lower edge portion of the first base portion extending in the vertical direction and abuts on the mounted portion. It has a mounting portion, and the mounting portion penetrates in the front-rear direction, extends in a direction from the first base portion toward the outer peripheral edge, and is divided by a notch that opens outward from the outer peripheral edge. When the first mounting member is attached to the mounted member, the first mounting member is adjacent to each other with the notch interposed therebetween, and has a plurality of divided portions that are in contact with the mounted surface and are displaced according to the shape of the mounted surface. However , the notch is characterized in that it converges diagonally upward toward the first base portion.

上述の構成によれば、取付部が被取付面に当接しつつ被取付面の形状に応じて変位するので、被取付面とオプション部材の取付部において被取付面に対向する当接面（以下、単に当接面という）との互いの形状の違いによる隙間をなくすように、取付部を被取付面に取り付け可能となる。これにより、被取付部との間に形状のずれがあっても、オプション部材を被取付面に対して良好に取り付けることができ、オプション部材と被取付部との取付状態を堅牢に維持することができる。
また、上述の構成によれば、取付部を厚さ方向（被取付面との接離方向）へ変位しやすい構造とすることができる。また、切欠きの長さや本数を適宜設定するだけで取付部の変位のしやすさを設計上容易に設定することができる。
また、上述の構成によれば、取付部を厚さ方向により大きく変位しやすい構造とすることができる。また、取付部を切欠きが延びる方向に交差する方向にも変位しやすい構造とすることができる。 According to the above configuration, the mounting portion is displaced according to the shape of the mounted surface while being in contact with the mounted surface. Therefore, the contact surface facing the mounted surface in the mounted surface and the mounting portion of the optional member (hereinafter referred to as The mounting portion can be mounted on the mounted surface so as to eliminate a gap due to the difference in shape between the contact surface and the contact surface. As a result, even if there is a difference in shape between the optional member and the attached portion, the optional member can be attached well to the attached surface, and the attached state of the optional member and the attached portion can be maintained robustly. Can be done.
Further, according to the above-described configuration, the mounting portion can be easily displaced in the thickness direction (contact / separation direction with the mounted surface). Further, the ease of displacement of the mounting portion can be easily set by design only by appropriately setting the length and the number of notches.
Further, according to the above-described configuration, the mounting portion can be configured to be easily displaced more greatly in the thickness direction. Further, the mounting portion can be configured to be easily displaced in the direction in which the notch extends in the direction of intersection.

また、本発明に係るオプション部材の取付構造では、前記取付部が着脱可能に取付けられたオプション本体を備えていてもよい。 Further, the mounting structure of the optional member according to the present invention may include an optional main body to which the mounting portion is detachably mounted.

上述の構成によれば、取付部が着脱可能に取付けられているので、被取付面の形状に応じて変位させる部分をオプション本体とは別体としてコンパクトに製造することができ、点検時や破損時にも必要に応じて取付部のみを交換可能となる。 According to the above configuration, since the mounting portion is detachably mounted, the part to be displaced according to the shape of the mounted surface can be compactly manufactured separately from the optional main body, and is damaged during inspection or damage. At times, only the mounting part can be replaced if necessary.

また、本発明に係るオプション部材の取付構造では、前記取付部が、前記オプション部材と一体に形成され、前記被取付面に対して弾性変形して当接してもよい。 Further, in the mounting structure of the optional member according to the present invention, the mounting portion may be formed integrally with the optional member and may be elastically deformed and abutted against the mounted surface.

上述の構成によれば、取付部の部品構成が簡素化され、取付部の製造コストを低減することができる。 According to the above configuration, the component configuration of the mounting portion can be simplified and the manufacturing cost of the mounting portion can be reduced.

本発明に係るオプション部材は、上述のオプション部材の取付構造を備えていることを特徴とする。 The optional member according to the present invention is characterized by having the above-mentioned optional member mounting structure.

上述の構成によれば、オプション部材の当接面において被取付面との間に形状のずれがあっても、被取付面に対して良好に取り付けることができると共に、オプション部材と被取付部との取付状態を堅牢に維持することができる。 According to the above configuration, even if there is a difference in shape between the contact surface of the optional member and the surface to be attached, the optional member and the attached portion can be attached well to the attached surface. Can be firmly maintained in the mounted state.

本発明に係る什器は、上述のオプション部材を備えていることを特徴とする。 The fixture according to the present invention is characterized by including the above-mentioned optional members.

上述の構成によれば、被取付部とオプション部材との間に形状のずれがあっても、オプション部材を被取付面に対して良好に取り付けることができると共に、什器におけるオプション部材と被取付部との取付状態を堅牢に維持することができる。 According to the above configuration, even if there is a difference in shape between the attached portion and the optional member, the optional member can be satisfactorily attached to the attached surface, and the optional member and the attached portion in the fixture can be attached. It is possible to maintain the mounting state with and firmly.

本発明によれば、オプション部材と被取付部との間に形状のずれがあっても、取付部を被取付面に対して良好に取り付け、オプション部材と被取付部との取付状態を堅牢に維持することができる。 According to the present invention, even if there is a difference in shape between the optional member and the mounted portion, the mounting portion is satisfactorily mounted on the mounted surface, and the mounting state between the optional member and the mounted portion is robust. Can be maintained.

本発明に係る一実施形態の椅子（什器）の側方から見た斜視図である。It is a perspective view seen from the side of the chair (furniture) of one Embodiment which concerns on this invention. 本発明に係る一実施形態の椅子の後方から見た斜視図である。It is a perspective view seen from the rear of the chair of one Embodiment which concerns on this invention. 本発明に係る一実施形態の椅子の背凭れの一部を示す斜視図である。It is a perspective view which shows a part of the backrest of the chair of one Embodiment which concerns on this invention. 本発明に係る一実施形態の椅子の背凭れの下枠材を説明する断面斜視図である。It is sectional drawing explaining the lower frame material of the backrest of the chair of one Embodiment which concerns on this invention. 本発明に係る一実施形態の椅子の背凭れの分解斜視図である。It is an exploded perspective view of the backrest of the chair of one Embodiment which concerns on this invention. 本発明に係る一実施形態の椅子の背凭れの下部側を示す正面図である。It is a front view which shows the lower side of the backrest of the chair of one Embodiment which concerns on this invention. 本発明に係る一実施形態のオプション部材の取付構造の取付部を構成する第一取付部材の図であって、（ａ）は正面図であり、（ｂ）は（ａ）の側面図であり、（ｃ）は（ａ）の背面図である。It is a figure of the 1st mounting member which comprises the mounting part of the mounting structure of the optional member of one Embodiment which concerns on this invention, (a) is a front view, (b) is a side view of (a). , (C) is a rear view of (a). 図６に示すＡ−Ａ線断面図である。FIG. 6 is a cross-sectional view taken along the line AA shown in FIG. 図６に示すＢ−Ｂ線断面図である。FIG. 6 is a cross-sectional view taken along the line BB shown in FIG. 図６に示すＣ−Ｃ線断面図である。FIG. 6 is a cross-sectional view taken along the line CC shown in FIG. 本発明に係る一実施形態のオプション部材の取付構造の取付部を構成する第二取付部材の図であって、（ａ）は正面図であり、（ｂ）は（ａ）の側面図であり、（ｃ）は（ａ）の背面図である。It is a figure of the 2nd mounting member which comprises the mounting part of the mounting structure of the optional member of one Embodiment which concerns on this invention, (a) is a front view, (b) is a side view of (a). , (C) is a rear view of (a). 図６に示すＤ−Ｄ線断面図である。FIG. 6 is a cross-sectional view taken along the line DD shown in FIG. 図６に示すＥ−Ｅ線断面図である。FIG. 6 is a cross-sectional view taken along the line EE shown in FIG. 下枠材に取り付けられた第二取付部材を説明する図である。It is a figure explaining the 2nd attachment member attached to the lower frame material. 下枠材に取り付けられた第二取付部材を説明する他の図である。It is another figure explaining the 2nd mounting member attached to the lower frame material.

以下、本発明に係る一実施形態について、図面に基づいて説明する。
図１に示すように、本発明に係る一実施形態の椅子（什器）１０は、床面Ｆの上に設置される脚部１と、脚部１の上部に設置されたボックス状の支基２と、支基２の上部に取り付けられた座受け部材３と、座受け部材３にスライド可能に支持されると共に着座者（図示略）が着座可能な座体４と、支基２から延びると共に座体４に着座した着座者の背中を支持可能な背凭れ７と、背凭れ７に着脱可能に設けられたランバーサポート（オプション部材）１００と、を有している。 Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the chair (furniture) 10 of the embodiment according to the present invention has a leg portion 1 installed on the floor surface F and a box-shaped support base installed on the upper portion of the leg portion 1. 2, the seat support member 3 attached to the upper part of the support base 2, the seat body 4 slidably supported by the seat support member 3 and capable of seating a seater (not shown), and extending from the support base 2. It also has a backrest 7 capable of supporting the back of a seated person seated on the seating body 4, and a lumbar support (optional member) 100 detachably provided on the backrest 7.

本明細書及び図面では、座体４に着座した着座者が前を向く側を前側とし、その反対側を後側とし、前側と後側とを結ぶ方向を前後方向とする。前後方向に直交する水平方向を幅方向とし、上下を結ぶ方向を上下方向とする。 In the present specification and drawings, the side in which the seated person seated on the seat 4 faces forward is the front side, the opposite side is the rear side, and the direction connecting the front side and the rear side is the front-rear direction. The horizontal direction orthogonal to the front-back direction is the width direction, and the direction connecting the top and bottom is the top-down direction.

脚部１は、多岐脚１１及び脚柱１２を有している。多岐脚１１の先端のそれぞれには、キャスタ１１Ａが取り付けられている。脚柱１２には、多岐脚１１の平面視における中央部より起立するように設けられ、且つ座体４を昇降可能とするガススプリング（不図示）が内蔵されている。 The leg portion 1 has a multi-faceted leg 11 and a pedestal 12. Casters 11A are attached to each of the tips of the multi-legs 11. The pedestal 12 has a built-in gas spring (not shown) that is provided so as to stand up from the central portion of the multi-leg 11 in a plan view and that allows the seat body 4 to be raised and lowered.

脚柱１２の下部を構成する外筒１３は、多岐脚１１に回転不能に嵌合し、多岐脚１１に支持されている。脚柱１２の上部を構成する内筒１４の上端部には支基２が固定され、内筒１４は支基２を支持している。内筒１４の下端部は、外筒１３に対して水平方向に沿う面内で回転可能となるように支持されている。 The outer cylinder 13 constituting the lower part of the pedestal 12 is non-rotatably fitted to the multi-leg 11 and is supported by the multi-leg 11. A support base 2 is fixed to the upper end of the inner cylinder 14 forming the upper part of the pedestal 12, and the inner cylinder 14 supports the support base 2. The lower end of the inner cylinder 14 is supported so as to be rotatable in a plane along the horizontal direction with respect to the outer cylinder 13.

支基２には、脚柱１２の昇降調整機構、及び背凭れ７の傾動調整機構が内蔵されている。 The support base 2 has a built-in elevating adjustment mechanism for the pedestal 12 and a tilt adjusting mechanism for the backrest 7.

座受け部材３は、支基２の上部に取り付けられた四本のリンクアーム（不図示）と、リンクアーム同士を連結する左右一対の固定フレーム（不図示）と、を有している。 The seat receiving member 3 has four link arms (not shown) attached to the upper part of the support base 2 and a pair of left and right fixed frames (not shown) that connect the link arms to each other.

座体４は、座フレーム４０と、座フレーム４０に張設された張材４１と、を有している。 The seat body 4 has a seat frame 40 and a tension member 41 stretched on the seat frame 40.

背凭れ７は、背フレーム７０と、背フレーム７０に張設された張材７１と、を有している。張材７１の前面は、着座者の荷重を受ける荷重支持面７１ｆとされている。図１及び図２以外では、張材７１の図示を省略している。 The backrest 7 has a back frame 70 and a tension member 71 stretched on the back frame 70. The front surface of the upholstery member 71 is a load supporting surface 71f that receives the load of the seated person. Except for FIGS. 1 and 2, the upholstery material 71 is not shown.

背フレーム７０は、支基２に連結され、且つ背フレーム７０の強度を担う強度部材である後枠材７０Ｂと、後枠材７０Ｂの前方に設けられた前枠材７０Ｆと、を有している。 The back frame 70 has a rear frame member 70B which is connected to the support base 2 and is a strength member which bears the strength of the back frame 70, and a front frame member 70F provided in front of the rear frame member 70B. There is.

後枠材７０Ｂは、下辺部７２と、側辺部７３と、上辺部７４と、を有している。下辺部７２と側辺部７３と上辺部７４は、例えばアルミ等の金属または所定の強度を有する樹脂等により一体に形成されている。 The rear frame member 70B has a lower side portion 72, a side side portion 73, and an upper side portion 74. The lower side portion 72, the side side portion 73, and the upper side portion 74 are integrally formed of, for example, a metal such as aluminum or a resin having a predetermined strength.

下辺部７２は、支基２の内部に設けられた傾動調整機構に連結され、支基２の後部の左右両側に沿って延在するように二つ設けられている。下辺部７２は、上方に向かうに従って漸次後方に向かうように傾斜している。また、下辺部７２には、座体４の側方に配置された肘掛け７５が設けられている。 Two lower side portions 72 are connected to a tilt adjusting mechanism provided inside the support base 2, and are provided so as to extend along the left and right sides of the rear portion of the support base 2. The lower side portion 72 is inclined so as to gradually move backward as it goes upward. Further, the lower side portion 72 is provided with armrests 75 arranged on the side of the seat body 4.

図２に示すように、側辺部７３は、二つの下辺部７２のそれぞれの上端部に接続されている。側辺部７３は、上方に向かうに従って漸次幅方向の外側（互いに離間する側）に向かうように傾斜している。また、側辺部７３は、側面視で上下方向における着座者の腰の括れ近傍の高さに相当する部分に湾曲部を有している。側辺部７３の湾曲部の下側は、上方に向かうに従って漸次前方に向かうように傾斜している。側辺部７３の湾曲部の上側は、上方に向かうに従って漸次後方に向かうように傾斜している。二つの側辺部７３の上部同士は、上辺部７４によって連結されている。 As shown in FIG. 2, the side side portion 73 is connected to the upper end portion of each of the two lower side portions 72. The side side portions 73 are inclined so as to gradually move outward in the width direction (sides separated from each other) toward the upper side. Further, the side side portion 73 has a curved portion at a portion corresponding to a height in the vicinity of the waist of the seated person in the vertical direction in a side view. The lower side of the curved portion of the side side portion 73 is inclined so as to gradually move forward as it goes upward. The upper side of the curved portion of the side side portion 73 is inclined so as to gradually move backward as it goes upward. The upper portions of the two side portions 73 are connected to each other by the upper side portions 74.

前枠材７０Ｆは、背凭れ７の幅方向に離間すると共に荷重支持面７１ｆに沿って上下方向に沿って延在するように配置された一対の縦枠材８１と、一対の縦枠材８１の上端同士を連結する上枠材８２と、一対の縦枠材８１の下端同士を連結する下枠材８３と、を有している。一対の縦枠材８１、上枠材８２、及び下枠材８３は、例えば樹脂等で一体に形成され、一体として環をなし、張材７１から作用する力に応じて弾性変形可能に構成されている。 The front frame member 70F is a pair of vertical frame members 81 arranged so as to be separated from each other in the width direction of the backrest 7 and extend along the load supporting surface 71f in the vertical direction, and a pair of vertical frame members 81. It has an upper frame member 82 that connects the upper ends of the vertical frame member 81 and a lower frame member 83 that connects the lower ends of the pair of vertical frame members 81. The pair of vertical frame members 81, upper frame member 82, and lower frame member 83 are integrally formed of, for example, resin or the like, form a ring as a unit, and are configured to be elastically deformable according to the force acting from the tension member 71. ing.

一対の縦枠材８１、上枠材８２及び下枠材８３のそれぞれの外周縁には、背凭れ７の内方（即ち、前側または後側から見て中心部）に向かって凹む溝部８４が形成されている。前述のように、一対の縦枠材８１、上枠材８２及び下枠材８３は一体として環をなすように形成されているので、溝部８４は一体となったこれらの枠材の周方向に連続して形成されている。溝部８４は、張材７１の外周端部が巻き込まれることによって張材７１を係止可能に構成されている。張材７１は、前枠材７０Ｆの前側に配置されている。張材７１の外周縁部近傍は、前枠材７０Ｆの外側に回り込み、溝部２２４に巻き込まれている。張材７１は、背凭れ７に寄りかかった着座者の荷重を受けるように構成されている。 On the outer peripheral edges of each of the pair of vertical frame members 81, upper frame member 82, and lower frame member 83, a groove portion 84 recessed toward the inside of the backrest 7 (that is, the central portion when viewed from the front side or the rear side) is formed. It is formed. As described above, since the pair of vertical frame members 81, the upper frame member 82, and the lower frame member 83 are integrally formed so as to form a ring, the groove portion 84 is formed in the circumferential direction of these integrated frame members. It is formed continuously. The groove portion 84 is configured so that the tension member 71 can be locked by involving the outer peripheral end portion of the tension member 71. The upholstery member 71 is arranged on the front side of the front frame member 70F. The vicinity of the outer peripheral edge portion of the upholstery member 71 wraps around the outside of the front frame member 70F and is caught in the groove portion 224. The upholstery member 71 is configured to receive the load of the seated person leaning against the backrest 7.

一対の縦枠材８１は、下方に向かうに従って漸次幅方向の内側に向かうように傾斜している。一対の縦枠材８１のそれぞれの上部と下部には、後方に向かって延在する上部連結部８５及び下部連結部８６が縦枠材８１１と一体に形成されている。上部連結部８５及び下部連結部８６の先端部（後端部）は、それぞれ後枠材７０Ｂの側辺部７３に連結されている。 The pair of vertical frame members 81 are inclined inward in the width direction gradually toward the bottom. At the upper and lower portions of the pair of vertical frame members 81, an upper connecting portion 85 and a lower connecting portion 86 extending rearward are integrally formed with the vertical frame member 811. The tip (rear end) of the upper connecting portion 85 and the lower connecting portion 86 are respectively connected to the side side portion 73 of the rear frame member 70B.

図１に示すように、上枠材８２は、幅方向に沿って延在している。上枠材８２の幅方向の両端部は、一対の縦枠材８１の上端部と連結されている。上枠材８２は、幅方向の中央部が両端部よりも上側に配されるように湾曲している。 As shown in FIG. 1, the upper frame member 82 extends along the width direction. Both ends of the upper frame member 82 in the width direction are connected to the upper ends of the pair of vertical frame members 81. The upper frame member 82 is curved so that the central portion in the width direction is arranged above both end portions.

下枠材８３は、幅方向に延在している。下枠材８３の幅方向の両端部は、一対の縦枠材８１の下端部と連結されている。下枠材８３は、幅方向の中央部が両端部よりも下側に配されるように湾曲している。 The lower frame member 83 extends in the width direction. Both ends of the lower frame member 83 in the width direction are connected to the lower ends of the pair of vertical frame members 81. The lower frame member 83 is curved so that the central portion in the width direction is arranged below both end portions.

図３及び図４では、下枠材８３の形状を詳細に説明し、下枠材８３の形状と該形状による作用効果をわかりやすく示すために、下枠材８３に取り付けられたランバーサポート１００の構成部材であるランバーサポート本体（オプション本体）１０１と、ランバーサポート１００の取付構造（オプション部材の取付構造、以下では単に「取付構造」という場合がある）１０４の第一取付部材１０５及び第二取付部材１０６と、を併せて図示している。 In FIGS. 3 and 4, the shape of the lower frame member 83 is described in detail, and in order to clearly show the shape of the lower frame member 83 and the action and effect of the shape, the lumbar support 100 attached to the lower frame member 83 The first mounting member 105 and the second mounting of the lumbar support main body (optional main body) 101, which is a constituent member, and the mounting structure of the lumbar support 100 (mounting structure of the optional member, which may be simply referred to as "mounting structure" below) 104. The member 106 and the member 106 are also shown in the figure.

図３および図４に示すように、下枠材８３は、下部側に配置され溝部８４が形成された基部９３と、基部９３の上面９３ａの後側端部から上方に向かうに従って漸次前方に向かうように突出する突出部９４と、を有している。また、基部９３の前側の上面９３ａと突出部９４の下面９４ｂによって、これらの面に囲まれた凹部９５が形成されている。基部９３、突出部９４は、それぞれ下枠材８３の長さ方向（即ち、椅子１０の幅方向）の全体にわたって形成されている。基部９３に形成された溝部８４は、後方に向かうに従って漸次下降するように形成され、基部９３の下面９３ｂに開口している。 As shown in FIGS. 3 and 4, the lower frame member 83 gradually moves forward from the base portion 93 arranged on the lower side and formed with the groove portion 84 and the rear end portion of the upper surface 93a of the base portion 93. It has a protruding portion 94 that protrudes as described above. Further, a recess 95 surrounded by these surfaces is formed by the upper surface 93a on the front side of the base 93 and the lower surface 94b of the protrusion 94. The base portion 93 and the projecting portion 94 are formed over the entire length direction of the lower frame member 83 (that is, the width direction of the chair 10), respectively. The groove portion 84 formed in the base portion 93 is formed so as to gradually descend toward the rear, and is open to the lower surface 93b of the base portion 93.

突出部９４は、基端側（即ち、基部９３側）に配置された板状部９６と、板状部９６の先端に配置され膨出部９７と、を有している。板状部９６及び膨出部９７は、一体に形成されている。板状部９６の厚みは、基部９３から突出する方向に沿って略均一になっている。膨出部９７の厚みは、板状部９６の先端から前方に向かうに従って板状部９６の厚みより漸次大きくなり、それから側面視半円を描くように縮小されている。即ち、膨出部９７の表面は、突出部９４の下面９４ｂの前側端部に接続され、且つ前方に向かって略水平に延在する下面９７ｂと、突出部９４の上面９４ａの前側端部に接続され、且つ上面９４ａと略面一になっている上面９７ａと、上面９７ａ及び下面９７ｂを互いに接続し、且つ側面視で半円状に形成された前面９７ｆと、を有している。 The protruding portion 94 has a plate-shaped portion 96 arranged on the base end side (that is, the base portion 93 side) and a bulging portion 97 arranged at the tip of the plate-shaped portion 96. The plate-shaped portion 96 and the bulging portion 97 are integrally formed. The thickness of the plate-shaped portion 96 is substantially uniform along the direction of protrusion from the base portion 93. The thickness of the bulging portion 97 gradually increases from the thickness of the plate-shaped portion 96 toward the front from the tip of the plate-shaped portion 96, and then is reduced so as to draw a semicircle in a side view. That is, the surface of the bulging portion 97 is connected to the front end portion of the lower surface 94b of the protruding portion 94 and extends substantially horizontally toward the front and the front end portion of the upper surface 94a of the protruding portion 94. It has an upper surface 97a that is connected and substantially flush with the upper surface 94a, and a front surface 97f that connects the upper surface 97a and the lower surface 97b to each other and is formed in a semicircular shape in a side view.

凹部９５には、幅方向中間部で、後述する取付部１０２が係止される領域の両側方それぞれに壁部９５ａ，９５ａが形成されている。壁部９５ａは、凹部９５に係止された取付部１０２の幅方向の移動を規制するために設けられている。
壁部９５ａは、板面が略幅方向を向く板状に形成されていて、前縁部以外が凹部９５の内面と連続している。壁部９５ａは、基部９３および突出部９４と一体に形成されている。 Wall portions 95a and 95a are formed in the recess 95 at the intermediate portion in the width direction on both sides of the region where the mounting portion 102 described later is locked. The wall portion 95a is provided to regulate the movement of the mounting portion 102 locked to the recess 95 in the width direction.
The wall portion 95a is formed in a plate shape in which the plate surface faces in the substantially width direction, and the wall portion 95a is continuous with the inner surface of the recess 95 except for the front edge portion. The wall portion 95a is formed integrally with the base portion 93 and the projecting portion 94.

ランバーサポート１００は、図５に示すように背フレーム７０に取り付けられ、図３から図５に示すように、椅子１０（図１参照）に着座した着座者の荷重を受けるランバーサポート本体（オプション部材）１０１と、下枠材８３及びランバーサポート本体１０１に取り付けられてランバーサポート本体１０１を支持する取付構造１０４と、取付構造１０４を後側から覆う背面カバー１０３と、ランバーサポート本体１０１の高さを調節可能とするランバーサポート高さ調整部（以下、単に「高さ調整部」という場合がある）１０７を有している。 The lumbar support 100 is attached to the back frame 70 as shown in FIG. 5, and as shown in FIGS. 3 to 5, the lumbar support main body (optional member) receives the load of the seated person seated on the chair 10 (see FIG. 1). ) 101, a mounting structure 104 that is attached to the lower frame material 83 and the lumbar support main body 101 to support the lumbar support main body 101, a back cover 103 that covers the mounting structure 104 from the rear side, and the height of the lumbar support main body 101. It has a lumbar support height adjusting unit (hereinafter, may be simply referred to as a “height adjusting unit”) 107 that can be adjusted.

ランバーサポート本体１０１は、背凭れ７の張材７１（図１及び図２参照）の後方に配置されている。ランバーサポート本体１０１は、背凭れ７の幅方向中央部に配置されるメインサポート部１１１と、メインサポート部１１１の上部の幅方向両側から幅方向外方に向かってそれぞれ延出された延出部１１２と、メインサポート部１１１から下方に延在し、且つ取付部１０２の高さ調整部１０７に取り付け可能に形成されたアーム部１１３と、を有している。メインサポート部１１１、延出部１１２、及びアーム部１１３は、一体に形成されている。アーム部１１３には、図５に示すボルト１２４を螺合可能なネジ穴（図８参照）１１４が形成されている。延出部１１２は、使用者がランバーサポート本体１０１の高さを調整する際に把持するために設けられている。
なお、ランバーサポート本体１０１の形状や構造については、上述の形態に限定されない。 The lumbar support main body 101 is arranged behind the upholstery member 71 (see FIGS. 1 and 2) of the backrest 7. The lumbar support main body 101 has a main support portion 111 arranged at the center of the backrest 7 in the width direction, and an extension portion extending outward in the width direction from both sides of the upper portion of the main support portion 111 in the width direction. It has 112 and an arm portion 113 that extends downward from the main support portion 111 and is formed so as to be attachable to the height adjusting portion 107 of the attachment portion 102. The main support portion 111, the extension portion 112, and the arm portion 113 are integrally formed. The arm portion 113 is formed with a screw hole (see FIG. 8) 114 into which the bolt 124 shown in FIG. 5 can be screwed. The extending portion 112 is provided for the user to grip when adjusting the height of the lumbar support main body 101.
The shape and structure of the lumbar support main body 101 is not limited to the above-mentioned form.

取付構造１０４は、下枠材８３に取り付け可能とされ、且つ取付時に下枠材８３の前側に配置される第一取付部材１０５と、下枠材２２３に取り付け可能とされ、且つ取付時に下枠材８３の後側に配置される第二取付部材１０６と、を有している。図５及び図６に示すように、第一取付部材１０５と、第二取付部材１０６とは、互いの幅方向の中心が一致するように前後方向に重なって配置されている。 The mounting structure 104 can be mounted on the lower frame member 83 and can be mounted on the first mounting member 105 arranged on the front side of the lower frame member 83 at the time of mounting and the lower frame member 223 at the time of mounting, and the lower frame at the time of mounting. It has a second mounting member 106, which is arranged on the rear side of the material 83. As shown in FIGS. 5 and 6, the first mounting member 105 and the second mounting member 106 are arranged so as to overlap each other in the front-rear direction so that the centers in the width direction coincide with each other.

図７の（ａ）から（ｃ）に示すように、第一取付部材１０５は、上下方向に延びる第一基部１２２と、第一基部１２２の下縁部から後側に向かって漸次下側に向かう斜め方向に延びる第一延出部（取付部）１２１と、を有している。 As shown in FIGS. 7A to 7C, the first mounting member 105 has a first base portion 122 extending in the vertical direction and gradually downward side from the lower edge portion of the first base portion 122 toward the rear side. It has a first extending portion (mounting portion) 121 extending in an oblique direction toward the direction.

図８から図１０に示すように、第一延出部１２１は、下枠材８３の突出部９４の前側で凹部９５の内部に配置されている。第一延出部１２１は、突出部９４の膨出部９７の前面９７ｆ及び下面９７ｂと当接するように配置される第一当接部１２５と、第一当接部１２５から下側に向かうに従って漸次に後側に向かうように延び、且つ凹部９５の内部に配置される第二当接部１２６と、を有している。 As shown in FIGS. 8 to 10, the first extending portion 121 is arranged inside the recess 95 on the front side of the protruding portion 94 of the lower frame member 83. The first extension portion 121 has a first contact portion 125 arranged so as to abut the front surface 97f and the lower surface 97b of the bulge portion 97 of the protrusion 94, and the first extension portion 121 is arranged downward from the first contact portion 125. It has a second contact portion 126 that gradually extends toward the rear side and is arranged inside the recess 95.

第一当接部１２５の上端部には、第一基部１２２が接続されている。
第二当接部１２６の先端部分は、凹部２５の内面（即ち、基部９３の前側の上面９３ａと突出部９４の下面９４ｂ）に当接している。 The first base portion 122 is connected to the upper end portion of the first contact portion 125.
The tip portion of the second contact portion 126 is in contact with the inner surface of the recess 25 (that is, the upper surface 93a on the front side of the base 93 and the lower surface 94b of the protrusion 94).

図７の（ａ）及び（ｃ）に示すように、第一基部１２２の幅寸法は、上方に向かって漸次小さくするよう形成されている。即ち、第一基部１２２は、前側及び後側から見て略三角形をなしている。図１０にも示すように、第一基部１２２の下部には、幅方向において互いに間隔をあけて二つのボルト孔１２３が形成されている。二つのボルト孔１２３は、図５に示すボルト１２４が挿通可能に形成されている。また、第一基部１２２には、背面カバー１０３を係合させることが可能な背面カバー係合部（不図示）が適宜形成されている。 As shown in FIGS. 7A and 7C, the width dimension of the first base portion 122 is formed so as to gradually decrease upward. That is, the first base portion 122 has a substantially triangular shape when viewed from the front side and the rear side. As shown in FIG. 10, two bolt holes 123 are formed in the lower portion of the first base portion 122 at intervals in the width direction. The two bolt holes 123 are formed so that the bolt 124 shown in FIG. 5 can be inserted. Further, the first base portion 122 is appropriately formed with a back cover engaging portion (not shown) capable of engaging the back cover 103.

図７の（ａ），（ｃ）及び図８に示すように、第一基部１２２には、幅方向の略中央部に上下方向に延在するボルト孔１３３が形成されている。ボルト孔１３３は、図５に示すボルト１３１が挿通可能に形成されている。ボルト孔１３３の幅方向の両側には、一対のガイド壁１３４が形成されている。図８に示すように、ボルト孔１３３及びガイド壁１３４の前方にはランバーサポート本体１０１のアーム部１１３が配置可能とされ、ボルト孔１３３及びガイド壁１３４の後方には高さ調整部１０７が配置可能とされている。ランバーサポート本体１０１のアーム部１１３と、高さ調整部１０７とは、ボルト孔１３３を介し、ボルト１３１によって連結されている。 As shown in FIGS. 7A, 7C and 8A, the first base portion 122 is formed with a bolt hole 133 extending in the vertical direction at a substantially central portion in the width direction. The bolt hole 133 is formed so that the bolt 131 shown in FIG. 5 can be inserted. A pair of guide walls 134 are formed on both sides of the bolt hole 133 in the width direction. As shown in FIG. 8, the arm portion 113 of the lumbar support main body 101 can be arranged in front of the bolt hole 133 and the guide wall 134, and the height adjusting portion 107 is arranged behind the bolt hole 133 and the guide wall 134. It is possible. The arm portion 113 of the lumbar support main body 101 and the height adjusting portion 107 are connected by bolts 131 via bolt holes 133.

図７の（ｃ）、図８及び図９に示すように、一対のガイド壁１３４のそれぞれの後面には、平坦なスライド面１４１と、一対のガイド壁１３４のそれぞれの後面の幅方向の外側（幅方向に互いに離間する側）に後方に突出するノッチ１４２が上下方向にわたって間隔をあけて複数のノッチ面１４３が形成されている。 As shown in FIGS. 7 (c), 8 and 9, the rear surfaces of the pair of guide walls 134 have a flat slide surface 141 and the outer sides of the rear surfaces of the pair of guide walls 134 in the width direction. A plurality of notch surfaces 143 are formed with notches 142 projecting rearward (sides separated from each other in the width direction) at intervals in the vertical direction.

図７の（ａ），（ｃ）に示すように、第一延出部１２１と第一基部１２２の下部には、前後方向に貫通する四つの切欠き１５１が幅方向に間隔をあけて形成されている。切欠き１５２は、第一延出部１２１の後端縁（即ち、取付部１０２を構成する第一取付部材１０５の外周縁）から第一延出部１２１において前後方向に沿って延在し、第一延出部１２１の前端から第一基部１２２の下部において上側に延びている。 As shown in FIGS. 7A and 7C, four notches 151 penetrating in the front-rear direction are formed at lower portions of the first extension portion 121 and the first base portion 122 at intervals in the width direction. Has been done. The notch 152 extends from the rear end edge of the first extending portion 121 (that is, the outer peripheral edge of the first mounting member 105 constituting the mounting portion 102) in the first extending portion 121 along the front-rear direction. It extends upward from the front end of the first extending portion 121 at the lower part of the first base portion 122.

具体的には、四つの切欠き１５１は、それぞれ第一延出部１２１の後端（或いは下端）から第一基部１２２の高さ方向の中間部にわたって延びている。第一延出部１２１及び第一基部１２２の下部は、四つの切欠き１５１が形成されていることにより、幅方向に五つに分割されている。五つに分割されたそれぞれを分割部１５２とすると、五つの分割部１５２のそれぞれの第一当接部１２５が突出部９４の膨出部９７（図８から図１０参照）の前面９７ｆ及び下面９７ｂと当接するように配置され、五つの分割部１５２のそれぞれの第二当接部１２６が凹部９５（図８乃至図１０参照）の内部に配置されるように構成されている。 Specifically, each of the four notches 151 extends from the rear end (or lower end) of the first extension portion 121 to the middle portion in the height direction of the first base portion 122. The lower portion of the first extending portion 121 and the first base portion 122 is divided into five in the width direction by forming four notches 151. Assuming that each of the five divided portions is a divided portion 152, the first contact portion 125 of each of the five divided portions 152 is the front surface 97f and the lower surface of the bulging portion 97 (see FIGS. 8 to 10) of the protruding portion 94. It is arranged so as to be in contact with 97b, and the second contact portion 126 of each of the five division portions 152 is arranged so as to be arranged inside the recess 95 (see FIGS. 8 to 10).

四つの切欠き１５１のうち、幅方向の両端に配置された二つの切欠き１５１Ａ，１５１Ｂの第一延出部１２１と第一基部１２２の連続部分には、切欠き１５１の幅よりも大きく開口されたフック部用開口部１５３が形成されている。 Of the four notches 151, the continuous portion of the first extension 121 and the first base 122 of the two notches 151A and 151B arranged at both ends in the width direction has an opening larger than the width of the notch 151. The hook opening 153 is formed.

図１１の（ａ）から（ｃ）に示すように、第二取付部材１０６は、上下方向に延びる第二基部１６２と、第二基部１６２の下縁部から後側に向かって漸次下側に向かう斜め方向に延びる第二延出部１６１と、を有している。 As shown in FIGS. 11A to 11C, the second mounting member 106 gradually moves downward from the lower edge portion of the second base portion 162 extending in the vertical direction and the lower edge portion of the second base portion 162 toward the rear side. It has a second extending portion 161 extending in an oblique direction toward the direction.

図８から図１０に示すように、第二延出部１６１は、下枠材８３の突出部９４の板状部９６の上面９６ａ（即ち、突出部９４の上面９４ａの後側）に沿って配置されている。第二延出部１６１は、幅方向の中間部に形成され、且つ突出部９４の板状部２６の上面９６ｂと当接するように配置される第二当接部１６５と、幅方向の両端部にそれぞれ形成され、且つ下枠材８３の突出部９４の膨出部９７に外嵌可能なフック部１６８（図１１の（ｂ）及び図１２参照）と、を有している。図１１の（ａ）及び（ｃ）に示すように、第二当接部１６５の上端部及びフック部１６８の上端部は、第二基部１６２と接続されている。第二当接部１６５とフック部１６８とは、直接連結されていない。 As shown in FIGS. 8 to 10, the second extending portion 161 is provided along the upper surface 96a of the plate-shaped portion 96 of the protruding portion 94 of the lower frame member 83 (that is, the rear side of the upper surface 94a of the protruding portion 94). Have been placed. The second extending portion 161 is formed at an intermediate portion in the width direction and is arranged so as to abut the upper surface 96b of the plate-shaped portion 26 of the protruding portion 94, and both ends in the width direction. Each has a hook portion 168 (see (b) and FIG. 12 in FIG. 11) that is formed in each of the lower frame members 83 and can be externally fitted to the bulging portion 97 of the protruding portion 94 of the lower frame member 83. As shown in FIGS. 11A and 11C, the upper end portion of the second contact portion 165 and the upper end portion of the hook portion 168 are connected to the second base portion 162. The second contact portion 165 and the hook portion 168 are not directly connected.

図１０に示すように、第二当接部１６５における幅方向の両端部且つ前側の端部が突出部９４の膨出部９７の上面９７ａに当接すると共に、前側の端部より後側の部分が突出部９４の板状部９６の上面９６ａと当接している。第二当接部１６５の前側の端部は、第一取付部材１０５の第一当接部１２５と当接している。 As shown in FIG. 10, both ends in the width direction and the front end of the second contact portion 165 abut on the upper surface 97a of the bulging portion 97 of the protrusion 94, and the portion rearward from the front end. Is in contact with the upper surface 96a of the plate-shaped portion 96 of the protruding portion 94. The front end of the second contact portion 165 is in contact with the first contact portion 125 of the first mounting member 105.

上述の構成により、突出部９４の膨出部９７は、幅方向の両端部分それぞれにおいて第一当接部１２５及び第二当接部１６５に囲まれている。また、突出部９４の板状部９６は、第二当接部１２６，１６５に上下から挟まれている。この状態で第一取付部材１０５と第二取付部材１０６とが接合されることによって、第一当接部１２５及び第二当接部１６５が突出部９４に係止されるように構成されている。なお、第二当接部１６５は、幅方向の中央部近傍では、突出部９４の板状部９６の上面９６ａに当接しているが、突出部９４の膨出部９７には当接していない。 According to the above configuration, the bulging portion 97 of the protruding portion 94 is surrounded by the first contact portion 125 and the second contact portion 165 at both end portions in the width direction. Further, the plate-shaped portion 96 of the protruding portion 94 is sandwiched between the second contact portions 126 and 165 from above and below. By joining the first mounting member 105 and the second mounting member 106 in this state, the first contact portion 125 and the second contact portion 165 are configured to be locked to the protrusion 94. .. The second contact portion 165 is in contact with the upper surface 96a of the plate-shaped portion 96 of the protrusion 94 in the vicinity of the central portion in the width direction, but is not in contact with the bulge 97 of the protrusion 94. ..

図１１及び図１２に示すように、フック部１６８には、後側に開口する凹部１６９が形成されている。フック部１６８は、下枠材８３の前側に配置され、凹部１６９に突出部９４の膨出部９７が内嵌可能に形成され、即ち膨出部９７に前側から引っ掛けられるように構成されている。下枠材８３の前側に配置されたフック部１６８は、第一取付部材１０５のフック部用開口部１５３を挿通可能に形成されると共に、フック部用開口部１５３の内部に配置されている。 As shown in FIGS. 11 and 12, the hook portion 168 is formed with a recess 169 that opens to the rear side. The hook portion 168 is arranged on the front side of the lower frame member 83, and the bulging portion 97 of the protruding portion 94 is formed in the recess 169 so as to be internally fitted, that is, the hook portion 168 is configured to be hooked on the bulging portion 97 from the front side. .. The hook portion 168 arranged on the front side of the lower frame member 83 is formed so that the hook portion opening 153 of the first mounting member 105 can be inserted, and is arranged inside the hook portion opening 153.

第二基部１６２は、ランバーサポート本体１０１のアーム部１１３の幅寸法より大きく、且つ第一取付部材１０５の第一基部１２２の幅寸法より小さく形成されている。第二基部１６２は、第一基部１２２の高さ寸法より小さく形成されている。第二基部１６２は、第一基部１２２の下部を後側から覆うように配置されている。 The second base portion 162 is formed to be larger than the width dimension of the arm portion 113 of the lumbar support main body 101 and smaller than the width dimension of the first base portion 122 of the first mounting member 105. The second base portion 162 is formed to be smaller than the height dimension of the first base portion 122. The second base portion 162 is arranged so as to cover the lower portion of the first base portion 122 from the rear side.

第二基部１６２の前面には、幅方向の略中央部に後側に凹んだ溝部１７１が高さ方向にわたって形成されている。溝部１７１は、第一基部１２２のボルト孔１３３及びガイド壁１３４の後側に配置されている。 On the front surface of the second base portion 162, a groove portion 171 recessed rearward is formed at a substantially central portion in the width direction over the height direction. The groove portion 171 is arranged behind the bolt hole 133 and the guide wall 134 of the first base portion 122.

第二基部１６２には、第一基部１２２と第二基部１６２とを連結するための図５に示すボルト１２４が挿通されるボルト孔１７２が形成されている。第二基部１６２の前面には、第一取付部材１０５の第一基部１２２の後面に形成された第一基部側当接部１２７（図１０参照）と当接する第二基部側当接部１７３が形成されている。なお、第一基部側当接部１２７及び第二基部側当接部１７３は、互いに平面状に形成されていてもよく、互いに嵌合する形状に形成されていてもよい。 The second base portion 162 is formed with a bolt hole 172 through which the bolt 124 shown in FIG. 5 for connecting the first base portion 122 and the second base portion 162 is inserted. On the front surface of the second base portion 162, there is a second base side contact portion 173 that contacts the first base side contact portion 127 (see FIG. 10) formed on the rear surface of the first base portion 122 of the first mounting member 105. It is formed. The first base side contact portion 127 and the second base side contact portion 173 may be formed in a plane shape or may be formed in a shape that fits each other.

図５に示すように、第一取付部材１０５に形成されたボルト孔１２３及び第二取付部材１０６のボルト孔１７２には、第一延出部１２１と第二取付部材６の第二延出部１６１とを接合するボルト１２４が挿通される。挿通されたボルト１２４は、それぞれ第一取付部材１０５の前方からナット１９５によって留められている。 As shown in FIG. 5, in the bolt holes 123 formed in the first mounting member 105 and the bolt holes 172 of the second mounting member 106, the first extending portion 121 and the second extending portion of the second mounting member 6 are provided. A bolt 124 that joins 161 is inserted. The inserted bolts 124 are each fastened by nuts 195 from the front of the first mounting member 105.

第二基部１６２には、第一基部１２２と同様に、背面カバー１０３と係合される背面カバー係合部（不図示）が適宜形成されている。 Similar to the first base portion 122, the second base portion 162 is appropriately formed with a back cover engaging portion (not shown) that is engaged with the back cover 103.

背面カバー１０３は、第一基部１２２の背面カバー係合部及び第二基部１６２の背面カバー係合部と係合可能な係合部（不図示）を有している。該係合部が第一基部１２２の背面カバー係合部及び第二基部１６２の背面カバー係合部と係合することで、背面カバー１０３が第一取付部材１０５及び第二取付部材１０６に装着可能とされている。 The back cover 103 has an engaging portion (not shown) that can be engaged with the back cover engaging portion of the first base portion 122 and the back cover engaging portion of the second base portion 162. The back cover 103 is mounted on the first mounting member 105 and the second mounting member 106 by engaging the engaging portion with the back cover engaging portion of the first base portion 122 and the back cover engaging portion of the second base portion 162. It is possible.

高さ調整部１０７は、ランバーサポート本体１０１に取り付けられ、ランバーサポート本体１０１と共に第一取付部材１０５及び第二取付部材１０６に高さ調整可能に支持されている。具体的には、図８及び図９に示すように、高さ調整部１０７は、第一取付部材１０５の第一基部１２２のボルト孔１３３及びガイド壁１３４と第二取付部材１０６の第二基部１６２の溝部１７１が形成された部分との間に設けられている。 The height adjusting unit 107 is attached to the lumbar support main body 101, and is supported by the first mounting member 105 and the second mounting member 106 together with the lumbar support main body 101 so that the height can be adjusted. Specifically, as shown in FIGS. 8 and 9, the height adjusting portion 107 includes the bolt hole 133 of the first base portion 122 of the first mounting member 105, the guide wall 134, and the second base portion of the second mounting member 106. The groove portion 171 of 162 is provided between the formed portion and the portion.

図５、図８及び図９に示すように、高さ調整部１０７は、スライドプレート１８１と、スライドプレート１８１の前後方向から見た外周部に接合されたポジショナー１８２と、を有している。 As shown in FIGS. 5, 8 and 9, the height adjusting portion 107 has a slide plate 181 and a positioner 182 joined to the outer peripheral portion of the slide plate 181 when viewed from the front-rear direction.

スライドプレート１８１は、前後方向から見て上下方向に長い略長方形のブロック状に形成され、下側に開口している。スライドプレート１８１には、ランバーサポート本体１０１のアーム部１１３に接合するためボルト１３１が挿通されるボルト孔１８７が形成されている。スライドプレート１８１は、一対のスライド面１４１に沿って上下方向にスライド可能に構成されている。 The slide plate 181 is formed in a substantially rectangular block shape that is long in the vertical direction when viewed from the front-rear direction, and opens downward. The slide plate 181 is formed with a bolt hole 187 through which a bolt 131 is inserted so as to be joined to the arm portion 113 of the lumbar support main body 101. The slide plate 181 is configured to be slidable in the vertical direction along the pair of slide surfaces 141.

ポジショナー１８２は、前後方向に貫通する開口部１８９が形成された枠状の部材である。ポジショナー１８２の開口部１８９には、スライドプレート１８１が嵌合可能とされている（図１３参照）。ポジショナー１８２及びスライドプレート１８１は、互いに嵌合した状態で、第一取付部材１０５の第一基部１２２のボルト孔１３３及びガイド壁１３４と第二取付部材１０６の第二基部１６２の溝部１７１が形成された部分との間に配置されている。 The positioner 182 is a frame-shaped member having an opening 189 that penetrates in the front-rear direction. A slide plate 181 can be fitted into the opening 189 of the positioner 182 (see FIG. 13). In a state where the positioner 182 and the slide plate 181 are fitted to each other, a bolt hole 133 of the first base portion 122 of the first mounting member 105 and a groove portion 171 of the guide wall 134 and the second base portion 162 of the second mounting member 106 are formed. It is placed between the parts.

図５に示すように、ポジショナー１８２には、幅方向の両側に前側に突出する突起部１９２が形成されている。ポジショナー１８２は、一対のノッチ面１４３に沿って上下方向にスライド可能に構成されている。突起部１９２は、ノッチ面１４３の複数のノッチ１４２にそれぞれ係合可能に構成されている。 As shown in FIG. 5, the positioner 182 is formed with protrusions 192 protruding forward on both sides in the width direction. The positioner 182 is configured to be slidable in the vertical direction along the pair of notch surfaces 143. The protrusion 192 is configured to be able to engage with each of the plurality of notches 142 on the notch surface 143.

ランバーサポート本体１０１のアーム部１１３と高さ調整部１０７とは、第一基部１２２のボルト孔１３３及びガイド壁１３４を挟んで対向し、ボルト孔１３３を貫通する上下一対のボルト１３１によって互いに連結されている。これにより、アーム部１１３及び高さ調整部１０７は、ボルト孔１３３に沿って上下方向にスライド移動可能とされている。 高さ調整部１０７は、ポジショナー１８２の上端部がボルト孔１３３の上壁と当接することによって上側への移動が規制され、ポジショナー１８２の下端部がボルト孔１３３の下壁と当接することによって下側への移動が規制されている。これにより、ランバーサポート本体１０１は、上下方向の移動範囲が規制されている。 The arm portion 113 and the height adjusting portion 107 of the lumbar support main body 101 face each other with the bolt hole 133 of the first base portion 122 and the guide wall 134 interposed therebetween, and are connected to each other by a pair of upper and lower bolts 131 penetrating the bolt hole 133. ing. As a result, the arm portion 113 and the height adjusting portion 107 can be slidably moved in the vertical direction along the bolt hole 133. The height adjusting portion 107 is restricted from moving upward when the upper end portion of the positioner 182 abuts on the upper wall of the bolt hole 133, and the lower end portion of the positioner 182 abuts on the lower wall of the bolt hole 133. Movement to the side is restricted. As a result, the movement range of the lumbar support main body 101 in the vertical direction is restricted.

高さ調整部１０７が移動領域の下部側に配置されている場合は、高さ調整部１０７の後側には第二取付部材１０６の第二基部１６２が配置されている。高さ調整部１０７が移動領域の上部側に配置されている場合は、高さ調整部１０７の後側に背面カバー１０３が配置されている。 When the height adjusting portion 107 is arranged on the lower side of the moving region, the second base portion 162 of the second mounting member 106 is arranged on the rear side of the height adjusting portion 107. When the height adjusting portion 107 is arranged on the upper side of the moving region, the back cover 103 is arranged on the rear side of the height adjusting portion 107.

高さ調整部７のポジショナー１８２の突起部７２２が所望の高さのノッチ１４２に係合することで、アーム部４１３および高さ調整部７がスリット５３に沿った複数段階の所望の高さ位置に固定される。このようにして、ランバーサポート本体１０１を所望の高さに配置することができる。 By engaging the protrusion 722 of the positioner 182 of the height adjusting portion 7 with the notch 142 of a desired height, the arm portion 413 and the height adjusting portion 7 are placed at a desired height position in a plurality of stages along the slit 53. Is fixed to. In this way, the lumbar support body 101 can be arranged at a desired height.

次いで、ランバーサポート１００を下枠材８３に装着する方法について説明する。 Next, a method of mounting the lumbar support 100 on the lower frame member 83 will be described.

まず、第一取付部材１０５及び第二取付部材１０６を下枠材８３に取り付ける。
具体的には、第一取付部材１０５を、下枠材８３の前側に配置し、第一当接部１２５を下枠材８３の突出部９４の膨出部９７に当接させるとともに、第二当接部１２６を下枠材８３の凹部９５に挿入する。このとき、第二当接部１２６を凹部９５に形成された２つの壁部９５ａ，９５ａの間に配置する。これにより、第一取付部材１０５が幅方向へ移動することが規制される。 First, the first mounting member 105 and the second mounting member 106 are attached to the lower frame member 83.
Specifically, the first mounting member 105 is arranged on the front side of the lower frame member 83, the first contact portion 125 is brought into contact with the bulging portion 97 of the protruding portion 94 of the lower frame member 83, and the second The contact portion 126 is inserted into the recess 95 of the lower frame member 83. At this time, the second contact portion 126 is arranged between the two wall portions 95a and 95a formed in the recess 95. As a result, the movement of the first mounting member 105 in the width direction is restricted.

第一取付部材１０５の設置と前後して、図１４及び図１５に示すように、第二取付部材１０６を下枠材８３の後側に配置し、第二当接部１６５を下枠材８３の突出部９４の板状部９６の上面２６ａに当接させる。なお、図１４及び図１５では第一取付部材１０５の図示を省略している。 Before and after the installation of the first mounting member 105, as shown in FIGS. 14 and 15, the second mounting member 106 is arranged on the rear side of the lower frame member 83, and the second contact portion 165 is placed on the lower frame member 83. It is brought into contact with the upper surface 26a of the plate-shaped portion 96 of the protruding portion 94 of the above. Note that in FIGS. 14 and 15, the first mounting member 105 is not shown.

また、第二取付部材１０６のフック部１６８を下枠材８３の突出部９４の膨出部９７に前側から引っ掛け、第一取付部材１０５のフック部用開口部１５３の内部に配置する。続いて、第一基部１２２の第一基部側当接部１２７と第二基部１６２の第二基部側当接部１７３とを前後方向に当接させ、第一延出部１２１と第二基部１６２とボルト１２４で締結する。 Further, the hook portion 168 of the second mounting member 106 is hooked on the protruding portion 97 of the protruding portion 94 of the lower frame member 83 from the front side, and is arranged inside the opening portion 153 for the hook portion of the first mounting member 105. Subsequently, the first base side contact portion 127 of the first base portion 122 and the second base side contact portion 173 of the second base portion 162 are brought into contact with each other in the front-rear direction, and the first extension portion 121 and the second base portion 162 are brought into contact with each other. And bolt 124.

第一取付部材１０５と第二取付部材１０６とが接合されると、第一取付部材１０５及び第二取付部材１０６の相対的な位置が固定されると共に、第一取付部材１０５及び第二取付部材１０６が下枠材８３に取り付けられた状態となる。この際、第二当接部１２６の先端部は、基部９３の上面９３ａに当接している。 When the first mounting member 105 and the second mounting member 106 are joined, the relative positions of the first mounting member 105 and the second mounting member 106 are fixed, and the first mounting member 105 and the second mounting member 106 are joined. 106 is attached to the lower frame member 83. At this time, the tip of the second contact portion 126 is in contact with the upper surface 93a of the base portion 93.

次に、第一取付部材１０５及び第二取付部材１０６にランバーサポート本体１０１を取り付ける。第一基部１２２のボルト孔１３３の前側にランバーサポート本体１０１を配置し、第一基部１２２のボルト孔１３３の後側に、高さ調整部１０７を配置する。続いて、ボルト孔１３３を介してランバーサポート本体１０１のアーム部１１３と高さ調整部１０７とをボルト１３１で接合する。高さ調整部１０７のポジショナー１８２の突起部１９２をガイド壁１３４のノッチ１４２と係合させる。 Next, the lumbar support main body 101 is attached to the first attachment member 105 and the second attachment member 106. The lumbar support main body 101 is arranged on the front side of the bolt hole 133 of the first base portion 122, and the height adjusting portion 107 is arranged on the rear side of the bolt hole 133 of the first base portion 122. Subsequently, the arm portion 113 of the lumbar support main body 101 and the height adjusting portion 107 are joined by bolts 131 via the bolt holes 133. The protrusion 192 of the positioner 182 of the height adjusting portion 107 is engaged with the notch 142 of the guide wall 134.

次に、背面カバー１０３を設置する。第一基部１２２及び第二基部１６２の後方に背面カバー１０３を配置し、第一基部１２２及び第二基部１６２に係合させる。これにより、ランバーサポート１００が前枠材７０Ｆに装着される。以上の手順によって、ランバーサポート１００が下枠材８３に取り付けられる。 Next, the back cover 103 is installed. A back cover 103 is placed behind the first base 122 and the second base 162 and engaged with the first base 122 and the second base 162. As a result, the lumbar support 100 is attached to the front frame material 70F. By the above procedure, the lumbar support 100 is attached to the lower frame member 83.

次いで、上述の本実施形態による背凭れ１の作用・効果について説明する。 Next, the action / effect of the backrest 1 according to the above-described embodiment will be described.

以上説明したように、本実施形態による取付構造１０４によれば、第一延出部１２１と第二基部１６２とボルト１２４で締結すると共に第一取付部材１０５及び第二取付部材１０６を下枠材（被取付部材）８３に取り付ける際に、第一取付部材（取付部）１０５が突出部９４の下面（被取付面）９４ｂに当接しつつ下面９４ｂに応じて変位することができる。これにより、突出部９４の下面９４ｂと第一取付部材１０５の第二当接部１２６の上面（即ち、当接面）との互いの形状の違いによる隙間をなくすように、第一取付部材１０５を突出部９４の下面９４ｂに取り付け可能となる。従って、金型成形等によって製造される第一取付部材１０５において、前枠材７０Ｆとの間に形状のずれがあっても、第一取付部材１０５と第二取付部材１０６とを突出部９４の下面９４ｂ及び上面９４ａに対して良好に取り付けることができ、ランバーサポート１００と前枠材７０Ｆとの取付状態を堅牢に維持することができる。
また、切欠き１５１が外周縁から下方に開口していることによって、ボルト締め込み時に第一取付部材（取付部）１０５を幅方向に弾性変形させることができる。これにより、下枠材８３に正面視における形状の歪みがある場合(下枠材８３が下方への出っ張っている場合や、下枠材８３のカーブの曲率が設計想定値と異なっている場合など)も、そのゆがみを吸収した状態で第一取付部材（取付部）１０５に下枠材８３に取り付けることができる。 As described above, according to the mounting structure 104 according to the present embodiment, the first extending portion 121, the second base portion 162, and the bolt 124 are fastened, and the first mounting member 105 and the second mounting member 106 are attached to the lower frame member. When the first mounting member (mounting portion) 105 is mounted on the (attached member) 83, the first mounting member (mounting portion) 105 can be displaced according to the lower surface 94b while being in contact with the lower surface (mounted surface) 94b of the protruding portion 94. As a result, the first mounting member 105 eliminates a gap between the lower surface 94b of the protruding portion 94 and the upper surface (that is, the contact surface) of the second contact portion 126 of the first mounting member 105 due to the difference in shape between them. Can be attached to the lower surface 94b of the protrusion 94. Therefore, in the first mounting member 105 manufactured by mold molding or the like, even if the shape of the first mounting member 105 is deviated from that of the front frame member 70F, the first mounting member 105 and the second mounting member 106 can be separated from each other by the protruding portion 94. It can be satisfactorily attached to the lower surface 94b and the upper surface 94a, and the attached state of the lumbar support 100 and the front frame member 70F can be firmly maintained.
Further, since the notch 151 opens downward from the outer peripheral edge, the first mounting member (mounting portion) 105 can be elastically deformed in the width direction when the bolt is tightened. As a result, when the lower frame material 83 has a distortion in shape in front view (when the lower frame material 83 protrudes downward, or when the curvature of the curve of the lower frame material 83 is different from the design assumed value, etc. ) Can also be attached to the lower frame member 83 to the first attachment member (attachment portion) 105 in a state of absorbing the distortion.

また、本実施形態による取付構造１０４によれば、第一取付部材１０５がランバーサポート本体１０１から着脱可能に取り付けられているので、突出部９４の下面９４ｂに応じて変形させる部分をランバーサポート本体１０１とは別体としてコンパクトに製造することができ、点検時や破損時にも必要に応じて第一取付部材１０５のみを交換すれば済む。 Further, according to the mounting structure 104 according to the present embodiment, since the first mounting member 105 is detachably mounted from the lumbar support main body 101, the portion to be deformed according to the lower surface 94b of the protruding portion 94 is mounted on the lumbar support main body 101. It can be manufactured compactly as a separate body from the above, and only the first mounting member 105 needs to be replaced as needed even at the time of inspection or damage.

また、本実施形態による取付構造１０４によれば、具体的に第一取付部材１０５に形成された切欠き１５１の大きさ（例えば、幅寸法等）を変化させて第一取付部材１０５の周方向における切欠き１５１の両側の合計五つの分割部１５２を突出部９４の下面９４ｂに応じて変形させることができる。これにより、上述のように、第一取付部材１０５と前枠材７０Ｆとの間に形状のずれがあっても、第一取付部材１０５と第二取付部材１０６とを突出部９４の下面９４ｂ及び上面９４ａに対して良好に取り付けることができ、ランバーサポート１００と前枠材７０Ｆとの取付状態を堅牢に維持することができる。また、複雑な機構や製造工程を要することなく、切欠き１５１を形成するだけで上述の第一取付部材１０５を容易に製造することができる。 Further, according to the mounting structure 104 according to the present embodiment, the size (for example, width dimension) of the notch 151 specifically formed in the first mounting member 105 is changed in the circumferential direction of the first mounting member 105. A total of five divided portions 152 on both sides of the notch 151 in the above can be deformed according to the lower surface 94b of the protruding portion 94. As a result, as described above, even if there is a difference in shape between the first mounting member 105 and the front frame member 70F, the first mounting member 105 and the second mounting member 106 can be separated from the lower surface 94b of the protrusion 94 and the lower surface 94b of the protrusion 94. It can be satisfactorily attached to the upper surface 94a, and the attached state of the lumbar support 100 and the front frame member 70F can be firmly maintained. Further, the above-mentioned first mounting member 105 can be easily manufactured only by forming the notch 151 without requiring a complicated mechanism or manufacturing process.

さらに、本実施形態によるランバーサポート１００によれば、ランバーサポート１００の第一取付部材１０５の各面形状において突出部９４の下面９４ｂ等の被取付面との間に形状のずれがあっても、ランバーサポート１００を被取付面に対して良好に取り付けることができると共に、ランバーサポート１００と被取付部との取付状態を堅牢に維持することができる。 Further, according to the lumbar support 100 according to the present embodiment, even if there is a deviation in the shape of each surface shape of the first mounting member 105 of the lumbar support 100 from the mounted surface such as the lower surface 94b of the protruding portion 94. The lumbar support 100 can be satisfactorily attached to the surface to be attached, and the attached state of the lumbar support 100 and the attached portion can be firmly maintained.

さらに、本実施形態による椅子１０によれば、被取付部とランバーサポート１００との間に形状のずれがあっても、ランバーサポート１００を被取付面に対して良好に取り付けることができると共に、椅子１０におけるランバーサポート１００と被取付部との取付状態を堅牢に維持することができる。 Further, according to the chair 10 according to the present embodiment, even if there is a difference in shape between the attached portion and the lumbar support 100, the lumbar support 100 can be satisfactorily attached to the attached surface and the chair. It is possible to firmly maintain the mounting state of the lumbar support 100 and the mounted portion in 10.

以上、本発明による背凭れの実施形態について説明したが、本発明は上記の実施形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。 Although the embodiment of the backrest according to the present invention has been described above, the present invention is not limited to the above-described embodiment and can be appropriately modified without departing from the spirit of the present invention.

例えば、上述の実施形態では、取付部は、第一取付部材１０５と第二取付部材１０６とによって構成されているが、これらの部材が一体に構成されていてもよい。 For example, in the above-described embodiment, the mounting portion is composed of the first mounting member 105 and the second mounting member 106, but these members may be integrally formed.

また、上述の実施形態では、第一取付部材１０５とランバーサポート本体１０１とは別体であるが、取付部はランバーサポート本体１０１と一体に構成されていてもよい。 Further, in the above-described embodiment, the first mounting member 105 and the lumbar support main body 101 are separate bodies, but the mounting portion may be integrally formed with the lumbar support main body 101.

また、上述の実施形態では、切欠き１５１が第一取付部材１０５のみに形成されていたが、第二取付部材１０６に形成されていてもよい。 Further, in the above-described embodiment, the notch 151 is formed only in the first mounting member 105, but it may be formed in the second mounting member 106.

さらに、本発明に係るオプション部材は、ランバーサポート１００に限定されず、ハンがーやヘッドレスト等、什器等に取り付け可能な部材であれば含む。また、オプション部材を備えた什器は、椅子に特定されず、机や棚等の什器を全て含む。 Further, the optional member according to the present invention is not limited to the lumbar support 100, and includes any member that can be attached to furniture such as a hangar and a headrest. In addition, fixtures equipped with optional members are not specified as chairs, but include all fixtures such as desks and shelves.

また、本発明における取付部としての、第一取付部材１０５の第一当接部１２５、第二当接部１２６、第二取付部材１０６の第二延出部１６１の少なくともひとつが、第一取付部材１０５および第二取付部材１０６の他部位に対して、二色成形等の手段により一体化された、前記他部位よりも相対的に弾性変形しやすい素材で形成されていてもよい。このような場合、取付部に切欠きは必ずしも必要でない。 Further, at least one of the first contact portion 125 of the first mounting member 105, the second contact portion 126, and the second extending portion 161 of the second mounting member 106 as the mounting portion in the present invention is the first mounting. It may be formed of a material that is integrated with the other parts of the member 105 and the second mounting member 106 by means such as two-color molding and is relatively easily elastically deformed as compared with the other parts. In such a case, the notch is not always necessary in the mounting portion.

また、本発明における取付部としての分割部１５２が、第一取付部材１０５とは切り離された別部材であり、下枠材８３の長手方向に略沿う方向の軸心を有する枢軸によって枢支されていてもよい。このような場合、各々の分割部１５２の回動範囲を適宜設定することによって、分割部１５２と下枠材８３との間の隙間の発生をより確実に抑止することができる。 Further, the split portion 152 as the mounting portion in the present invention is a separate member separated from the first mounting member 105, and is pivotally supported by a pivot having an axial center in a direction substantially along the longitudinal direction of the lower frame member 83. You may be. In such a case, by appropriately setting the rotation range of each of the divided portions 152, it is possible to more reliably suppress the occurrence of a gap between the divided portion 152 and the lower frame member 83.

１０ 椅子（什器）
１００ ランバーサポート（オプション部材）
１０２ 取付部
１０４ 取付構造（オプション部材の取付構造） 10 chairs (furniture)
100 lumbar support (optional member)
102 Mounting part 104 Mounting structure (mounting structure of optional members)

Claims (5)

什器の被取付面に取り付け可能に構成されたオプション部材の取付構造であって、
前記被取付部材の被取付面に当接する第一取付部材を有し、
前記第一取付部材は、上下方向に延びる第一基部と、前記第一基部の下縁部から漸次下側に向かう斜め方向に延び、前記被取付部に当接する取付部と、を有し、
前記取付部は、前後方向に貫通し、前記第一基部から外周縁へ向かう方向に延びるとともに、前記外周縁から外方に開口する切欠きによって分割されるとともに、前記切欠きを挟んで隣接し合い、前記第一取付部材を前記被取付部材に取り付ける際に、前記被取付面に当接しつつ前記被取付面の形状に応じて変位する複数の分割部を有し、
前記切欠きは、前記第一基部に向かって斜め上方に収束している
ことを特徴とするオプション部材の取付構造。 It is a mounting structure of optional members that can be mounted on the mounting surface of furniture.
It has a first mounting member that comes into contact with the mounted surface of the mounted member.
The first mounting member has a first base portion extending in the vertical direction and a mounting portion extending diagonally downward from the lower edge portion of the first base portion and abutting against the mounted portion.
The mounting portion penetrates in the front-rear direction, extends in a direction from the first base portion toward the outer peripheral edge, is divided by a notch that opens outward from the outer peripheral edge, and is adjacent with the notch in between. In addition, when the first mounting member is mounted on the mounted member, the first mounting member has a plurality of divided portions that are in contact with the mounted surface and are displaced according to the shape of the mounted surface.
The mounting structure of the optional member, characterized in that the notch converges diagonally upward toward the first base portion. 前記取付部が着脱可能に取付けられたオプション本体を備えることを特徴とする請求項１に記載のオプション部材の取付構造。 The mounting structure for an optional member according to claim 1, wherein the mounting portion includes an optional main body to which the mounting portion is detachably mounted. 前記取付部が、前記オプション部材と一体に形成され、前記被取付面に対して弾性変形して当接することを特徴とする請求項１または請求項２に記載のオプション部材の取付構造。 The mounting structure for an optional member according to claim 1 or 2 , wherein the mounting portion is formed integrally with the optional member and elastically deforms and abuts against the mounted surface. 請求項１から請求項３のいずれか一項に記載のオプション部材の取付構造を備えたオプション部材。 An optional member having a mounting structure for the optional member according to any one of claims 1 to 3. 請求項４に記載のオプション部材を備えた什器。 A fixture provided with the optional member according to claim 4.
JP2017074011A 2016-06-10 2017-04-03 Optional parts mounting structure, optional parts, and fixtures Active JP6858624B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2017074011A JP6858624B2 (en) 2017-04-03 2017-04-03 Optional parts mounting structure, optional parts, and fixtures
CN201790000938.0U CN210130611U (en) 2016-06-10 2017-06-09 Backrest, lumbar support, chair, optional component mounting structure, optional component, and daily utensil
US16/307,795 US10966530B2 (en) 2016-06-10 2017-06-09 Backrest, lumbar support, chair, attachment structure for optional member, optional member, and furniture
EP17810424.6A EP3469955A4 (en) 2016-06-10 2017-06-09 Backrest, lumbar support, chair, attachment structure for optional member, optional member, and furniture
PCT/JP2017/021467 WO2017213251A1 (en) 2016-06-10 2017-06-09 Backrest, lumbar support, chair, attachment structure for optional member, optional member, and furniture

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