JP2020179028A - Folding chair - Google Patents

Folding chair Download PDF

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JP2020179028A
JP2020179028A JP2019085925A JP2019085925A JP2020179028A JP 2020179028 A JP2020179028 A JP 2020179028A JP 2019085925 A JP2019085925 A JP 2019085925A JP 2019085925 A JP2019085925 A JP 2019085925A JP 2020179028 A JP2020179028 A JP 2020179028A
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seat
leg
plate
legs
elastic support
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JP7312010B2 (en
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岡田 和久
Kazuhisa Okada
和久 岡田
光平 和田
Kohei Wada
光平 和田
徹也 山下
Tetsuya Yamashita
徹也 山下
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Itoki Corp
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Itoki Corp
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Abstract

To provide a wooden folding chair that has improved sitting comfort.SOLUTION: The chair includes: a seat 1; and front and rear legs 2, 3 that are arranged in the left and right of the seat. The front and rear legs 2, 3 are connected so as to be relatively rotatable with a position higher than the seat 1 as a fulcrum. A seat plate 14 is rotatably connected to the front legs 2 by means of a spindle 22 attached through a center bracket 21 to the lower face of the seat plate. The seat 1 is equipped with a seat plate 14 drilled with a through hole 17, an elastic support material 18 that is spread on the upper face of the seat, and a cushion body 15. By a fit action by the cushion body 15 and by an elastic support action by the elastic support material 18, pleasant sitting comfort can be provided for a sitting person. Although the spindle 22 is arranged in the lower part of the through hole 17, even if the elastic support material 18 is extended and deformed, the spindle 22 is prevented from bring hit thereby. Consequently, a sitting person is free from a feeling of discomfort.SELECTED DRAWING: Figure 5

Description

本願発明は折り畳み式椅子に関するものであり、特に、木製の折り畳み式椅子を好適な対象にしている。 The present invention relates to a foldable chair, and a wooden foldable chair is particularly suitable.

木製の折り畳み式椅子として、前脚と後ろ脚とを側面視で人字形に連結したタイプがあり、このタイプでは、前後の脚は正面視で重なる状態に配置できるため、デザインの自由性が高い利点がある。 As a wooden foldable chair, there is a type in which the front and rear legs are connected in a human shape in a side view, and in this type, the front and rear legs can be arranged so that they overlap in a front view, so there is a high degree of freedom in design. There is.

そして、前後の脚を人字形に連結したタイプでは、座は、前脚に対しては跳ね上げ回動可能に連結されて、後ろ脚に対しては、回動可能でかつスライド可能に連結されており、これにより、座の跳ね上げ回動に連動して前後脚が折り畳まれるようになっている。そして、座を後ろ脚に対して回動可能でかつスライド可能に連結する手段としては、連結位置を移動させるためのガイド溝が必要であるが、このガイド溝は、特許文献1に開示されているように後ろ脚に形成されているタイプと、特許文献2に開示されているように座の左右外側面に形成されているタイプとがある。 In the type in which the front and rear legs are connected in a human shape, the seat is rotatably connected to the front legs and rotatably and slidably connected to the rear legs. As a result, the front and rear legs are folded in conjunction with the flip-up rotation of the seat. As a means for connecting the seat so as to be rotatable and slidable with respect to the hind legs, a guide groove for moving the connecting position is required, and this guide groove is disclosed in Patent Document 1. There are two types, one is formed on the hind legs and the other is formed on the left and right outer surfaces of the seat as disclosed in Patent Document 2.

実開昭58−149950号のマイクロフィルムMicrofilm of No. 58-149950 実開平06−84947号のCD−ROMCD-ROM of Jitsukaihei 06-84447

木製の折り畳み式椅子において、座は、座板のみで構成されている場合と、座板の上面にクッション体が張られている場合とがあるが、座板のみの構造では座面が硬くて座り心地が悪いという問題がある。他方、クッション体を設けると、座板のみの場合に比べると座り心地は改善できるが、クッション体は使用しているといわゆるヘタリ現象が生じて弾性が低下するため、長期に亙って高い座り心地を維持し難いことも多い。 In a wooden foldable chair, the seat may consist of only a seat plate or a cushion body may be stretched on the upper surface of the seat plate. However, in the structure of only the seat plate, the seat surface is hard. There is a problem that it is uncomfortable to sit on. On the other hand, if a cushion body is provided, the sitting comfort can be improved as compared with the case where only the seat plate is used, but when the cushion body is used, a so-called settling phenomenon occurs and the elasticity decreases, so that the sitting comfort is high for a long period of time. It is often difficult to maintain comfort.

また、近年、様々な製品について、部材を複数のユニットとして別々の場所で製造して組み立て工場で完成品と成すノックダウン方式が広がっており、折り畳み式椅子についても、例えば座と脚装置とを別々に製造して組み立てできるとコストを削減できるが、特許文献1,2とも組み立ての容易性に注意が払われておらず、ノックダウン方式に適用できるとは言い難い。 Further, in recent years, a knockdown method in which parts are manufactured as a plurality of units in different places for various products and made into a finished product at an assembly factory has become widespread, and for folding chairs, for example, a seat and a leg device are used. Costs can be reduced if they can be manufactured and assembled separately, but patent documents 1 and 2 do not pay attention to the ease of assembly, and it cannot be said that they can be applied to the knockdown method.

また、折り畳み式椅子においても肘当てがあると着座者の快適性を大幅に向上できるが、特許文献1,2とも肘当てを設けるという思想は看取し難い。更に、特許文献1,2とも背もたれ板を備えているが、背もたれ板は、その左右端面を前脚の内側面に当接させた状態で前脚に固定しているため、背もたれ板による着座者のホールド性は殆どなくて、着座者の安楽性向上は期待できないといえる。更に,背もたれ板と前脚との接合面積は小さいため、高い固定強度を確保し難い場合もあるといえる。 Further, even in a foldable chair, if an elbow pad is provided, the comfort of the seated person can be greatly improved, but the idea of providing an elbow pad in both Patent Documents 1 and 2 is difficult to see. Further, both Patent Documents 1 and 2 are provided with a backrest plate, but since the backrest plate is fixed to the front leg with its left and right end faces in contact with the inner side surface of the front leg, the seater is held by the backrest plate. There is almost no sex, and it can be said that improvement in the comfort of the seated person cannot be expected. Furthermore, since the joint area between the backrest plate and the front legs is small, it may be difficult to secure high fixing strength.

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

本願発明の折り畳み式椅子は、
「座とその左右両側に配置された一対の前脚及び後ろ脚を有していて、
前記前後の脚は、前記座よりも高い位置を回動軸心として前後方向に相対回動し得るように連結されている一方、
前記座は、前記前脚及び後ろ脚に対して、左右長手の軸心回りに相対回動し得るように連結されており、前記座と後ろ脚との連結位置を移動可能とすることにより、前記座をその前端が上になるように跳ね上げ回動させるとこれに連動して前記前後の脚が折り畳まれる」
という基本構成になっている。
The foldable chair of the present invention
"It has a seat and a pair of front and rear legs located on both sides of it,
The front and rear legs are connected so that they can rotate relative to each other in the front-rear direction with a position higher than the seat as the rotation axis.
The seat is connected to the front and rear legs so as to be able to rotate relative to the left and right longitudinal axial centers, and by making the connecting position between the seat and the rear legs movable, the seat is said to be movable. When the seat is flipped up and rotated so that its front end is on top, the front and rear legs are folded in conjunction with this. "
It has a basic structure.

そして、請求項1の発明は、上記基本構成において、
「前記座は、着座者の臀部の下方に抜き穴が開口した枠状の座板を備えており、前記座板の上面に、着座者の荷重で弾性変形可能な弾性サポート材が前記抜き穴を覆った状態で配置されている一方、
前記座の下面部に、当該座を前記前脚に連結する左右長手の支軸が、前記抜き穴の下方に位置するように配置されている」
という構成が付加されている。
The invention of claim 1 is based on the above basic configuration.
"The seat is provided with a frame-shaped seat plate having a hole below the buttocks of the seated person, and an elastic support material elastically deformable by the load of the seated person is provided on the upper surface of the seat plate. While it is placed covering the
On the lower surface of the seat, left and right longitudinal support shafts that connect the seat to the front legs are arranged so as to be located below the punched holes. "
The configuration is added.

本願発明は、様々に展開できる。その例を請求項2以下に例示している。このうち請求項2の発明は、請求項1において、
「前記支軸を、前記座板の左右側部の下面に突設したブラケットに取り付けることにより、前記支軸と弾性サポート材との間に、前記弾性サポート材が前記支軸に当たることなく伸び変形することを許容する間隔が空いている」
という構成になっている。
The invention of the present application can be developed in various ways. An example thereof is illustrated in claim 2 and below. Of these, the invention of claim 2 is claimed in claim 1.
"By attaching the support shaft to a bracket projecting from the lower surface of the left and right side portions of the seat plate, the elastic support material is stretched and deformed between the support shaft and the elastic support material without hitting the support shaft. There is an interval to allow you to do it. "
It is configured as.

請求項3の発明は、請求項1又は2において、
「前記座板の上面には、前記弾性サポート材を覆うようにクッション体が張られている」
という構成になっている。
The invention of claim 3 is claimed in claim 1 or 2.
"A cushion body is stretched on the upper surface of the seat plate so as to cover the elastic support material."
It is configured as.

請求項4の発明は、請求項1〜3のうちのいずれかにおいて、
「前記前脚には、前記支軸の端部を後ろから嵌め込みできる切り欠き溝が形成されている一方、
前記後ろ脚の内側面に、当該後ろ脚と前記座との連結位置を移動させるための上下長手のガイド溝が形成されており、前記座板の後部下面に、前記ガイド溝に移動自在に嵌まったスライダーを有するブラケットがビスで固定されている」
という構成になっている。請求項4の発明は請求項1等に従属させているが、独立した発明たり得る。
The invention of claim 4 is the invention of any one of claims 1 to 3.
"While the front leg is formed with a notch groove into which the end of the support shaft can be fitted from behind,
A vertically elongated guide groove for moving the connecting position between the rear leg and the seat is formed on the inner side surface of the rear leg, and the guide groove is movably fitted on the lower surface of the rear portion of the seat plate. Brackets with stowed sliders are fixed with screws. "
It is configured as. Although the invention of claim 4 is subordinate to claim 1 and the like, it may be an independent invention.

請求項5の発明は、請求項1〜4のうちのいずれかにおいて、
「前記前脚は、上方に行くに従って後ろにずれるように後傾しており、前記前脚の上端部に肘当てが一体に形成されている」
という構成になっている。請求項5の発明も独立した発明たり得る。
The invention of claim 5 is the invention of any one of claims 1 to 4.
"The front leg is tilted backward so that it shifts backward as it goes upward, and an elbow pad is integrally formed at the upper end of the front leg."
It is configured as. The invention of claim 5 may also be an independent invention.

請求項6の発明は、請求項1〜5のうちのいずれかにおいて、
「前記左右の前脚の上部に固定された背もたれ板を備えており、前記背もたれ板は、平面視で後ろ向きに膨れるように湾曲しつつ左右両端に前向き部が形成されていて略U形になっている一方、
前記前脚の上部内側面に、前記背もたれ板の前向き部が嵌め込まれる切り欠き部を形成しており、前記背もたれ板の前向き部が前記切り欠き部に固定されている」
という構成になっている。請求項6の発明も、独立した発明たり得る。
The invention of claim 6 is the invention of any one of claims 1 to 5.
"A backrest plate fixed to the upper part of the left and right front legs is provided, and the backrest plate is curved so as to bulge backward in a plan view, and forward facing portions are formed on both left and right ends to form a substantially U shape. On the other hand
A notch is formed on the inner surface of the upper part of the front leg into which the forward-facing portion of the backrest plate is fitted, and the forward-facing portion of the backrest plate is fixed to the notch. "
It is configured as. The invention of claim 6 may also be an independent invention.

本願発明では、座板は枠状になっていてこれに弾性サポート材が張られているため、高いクッション性を長期に亙って維持できる。また、着座者の荷重は抜き穴の箇所に強く作用するが、支軸は抜き穴の下方に配置されているため、座を安定的に支持できる。 In the present invention, since the seat plate has a frame shape and an elastic support material is stretched on the seat plate, high cushioning property can be maintained for a long period of time. Further, although the load of the seated person strongly acts on the part of the punched hole, since the support shaft is arranged below the punched hole, the seat can be stably supported.

そして、伸び変形した弾性サポート材が支軸に当たると着座者に違和感を与えるおそれがあるが、請求項2の構成を採用すると、座と支軸との間には、弾性サポート材の十分な伸びを許容するように間隔が空いているため、使用者に違和感を与えることはない。従って、クッション性が高く使用感に優れた高品質を保持できる。 If the stretched and deformed elastic support material hits the support shaft, the seated person may feel uncomfortable. However, when the configuration of claim 2 is adopted, the elastic support material is sufficiently stretched between the seat and the support shaft. Since the intervals are spaced to allow for, the user does not feel uncomfortable. Therefore, it is possible to maintain high quality with high cushioning and excellent usability.

なお、設定以上の荷重が弾性サポート材に掛かって弾性サポート材が許容限度以上に伸びたり、保証値以上の過酷な使用が成されて弾性サポート材が破れたりすることも想定されるが、これらの場合は、着座者の臀部は支軸で支持されるため、着座者の臀部が沈み過ぎることを防止できる。従って、支軸を非常時の***材として機能させることができる。 In addition, it is assumed that a load exceeding the set value is applied to the elastic support material and the elastic support material extends beyond the permissible limit, or the elastic support material is torn due to harsh use exceeding the guaranteed value. In the case of, since the buttocks of the seated person are supported by the support shaft, it is possible to prevent the buttocks of the seated person from sinking too much. Therefore, the support shaft can function as an emergency safety member.

請求項3のようにクッション体を設けると、クッション体と弾性サポート材とのダブル効果によって座り心地を更に向上できる。すなわち、クッション体は着座者の押圧力に応じて変形して着座者の身体にフィットする利点があるため、請求項3の発明は、フィット性とクッション体とを併有して快適な使用感を得ることができる。また、クッション体の弾性復元力が低下しても、弾性サポート材によって弾性が保持されているため、快適性を長期に亙って維持できる。 When the cushion body is provided as in claim 3, the sitting comfort can be further improved by the double effect of the cushion body and the elastic support material. That is, since the cushion body has an advantage of being deformed according to the pressing force of the seated person to fit the seated person's body, the invention of claim 3 has both the fit and the cushioned body and has a comfortable feeling of use. Can be obtained. Further, even if the elastic restoring force of the cushion body is reduced, the elasticity is maintained by the elastic support material, so that the comfort can be maintained for a long period of time.

弾性サポート材としては、例えば、多数のスリットが形成された合成樹脂板を使用することも可能であるが、実施形態のように編地又は織地のような布帛を使用すると、市販品を必要な大きさに裁断して使用できるため、コストを抑制できる利点がある。また、座板への固定も、タッカー等を使用して簡単に行える。 As the elastic support material, for example, a synthetic resin plate having a large number of slits formed can be used, but if a fabric such as a knitted fabric or a woven fabric is used as in the embodiment, a commercially available product is required. Since it can be cut into pieces and used, it has the advantage of reducing costs. Also, it can be easily fixed to the seat plate by using a tacker or the like.

請求項4の発明では、座に支軸を予め取り付けておいてから、前脚の切り欠き溝に後ろから嵌め込んで、前脚に外輪から挿通したボルト(ビス)を支軸にねじ込むことにより、支軸を前脚に固定(連結)できる。従って、左右一対ずつの前脚及び後ろ脚を有する脚装置を予め組み立てた状態で、座を前脚に連結できる。また、座の後端部は、ブラケットを介して後ろ脚に連結されているため、脚装置を組み立てた状態でも、座板を後ろ脚に連結できる。 In the invention of claim 4, the support shaft is attached to the seat in advance, then fitted into the notch groove of the front leg from behind, and the bolt (screw) inserted from the outer ring into the front leg is screwed into the support shaft. The shaft can be fixed (connected) to the front legs. Therefore, the seat can be connected to the front legs in a state in which a leg device having a pair of left and right front legs and rear legs is assembled in advance. Further, since the rear end portion of the seat is connected to the rear legs via the bracket, the seat plate can be connected to the rear legs even when the leg device is assembled.

従って、請求項4の発明では、脚装置と座板とを別々の場所で半製品としてユニット化された状態に製造してから組み立てるノックダウン方式を採用できる。これにより、コストダウンを実現できる。 Therefore, in the invention of claim 4, a knockdown method can be adopted in which the leg device and the seat plate are manufactured in a united state as a semi-finished product at different places and then assembled. As a result, cost reduction can be realized.

折り畳み式椅子は簡易性を優先した構造になっており、使い心地への注意は必ずしも十分でなかったと云えるが、請求項5のように前脚に肘当てを設けると、折り畳み式椅子でありながら安楽性を高めて椅子の価値を大幅に向上できる。また、肘当ては前脚に一体に形成されているため、デザイン的にもスッキリさせることができる。この面でも、椅子の価値を向上できる。 It can be said that the foldable chair has a structure that prioritizes simplicity, and it can be said that attention to usability was not always sufficient, but if an elbow pad is provided on the front leg as in claim 5, it is a foldable chair. You can increase the comfort and greatly improve the value of the chair. In addition, since the elbow pads are integrally formed with the front legs, the design can be refreshed. In this respect as well, the value of the chair can be improved.

更に、請求項6の発明を採用すると、背もたれ板は平面視U形になっているため、着座者の上半身のホールド性が向上して、着座者の安楽性を向上できる。また、背もたれ板の前向き部を広い面積に亙って前脚に重ね固定できるため、背もたれ板を前脚に対して簡単かつ強固に固定できる。 Further, when the invention of claim 6 is adopted, since the backrest plate has a U-shape in a plan view, the holdability of the upper body of the seated person is improved, and the comfort of the seated person can be improved. Further, since the forward portion of the backrest plate can be overlapped and fixed to the front legs over a wide area, the backrest plate can be easily and firmly fixed to the front legs.

また、背もたれ板の前向き部は前脚に形成された切り欠き部に収まっていて、背もたれ板の前向き部が前脚の内側面から出っ張ることを防止できるため、例えば着座者の肘を前脚の内側面に沿って上下動させても、肘が前脚の前向き部の下面又は上面に当たるようなことはなくて、使用感に優れている。更に、目障りな段差はないため、美観においても優れている。 Further, the forward portion of the backrest plate is housed in the notch formed in the front leg, and the forward portion of the backrest plate can be prevented from protruding from the inner surface of the front leg. Therefore, for example, the elbow of the seated person is placed on the inner surface of the front leg. Even if it is moved up and down along the line, the elbow does not hit the lower surface or the upper surface of the forward-facing portion of the front leg, and the usability is excellent. Furthermore, since there are no unsightly steps, it is also excellent in aesthetics.

実施形態を示す図で、(A)は前から見た斜視図、(B)は後ろから見た斜視図、(C)は側面図である。In the figure which shows the embodiment, (A) is a perspective view seen from the front, (B) is a perspective view seen from the back, and (C) is a side view. (A)は下方から見た斜視図、(B)は折り畳んだ状態を前から見た斜視図、(B)は折り畳んだ状態を後ろから見た斜視図である。(A) is a perspective view seen from below, (B) is a perspective view of the folded state viewed from the front, and (B) is a perspective view of the folded state viewed from the back. (A)は平面図、(B)は正面図、(C)は折り畳んだ状態の側面図である。(A) is a plan view, (B) is a front view, and (C) is a side view in a folded state. (A)は分離斜視図、(B)は一部の破断分離斜視図である。(A) is a separated perspective view, and (B) is a partially broken separated perspective view. 椅子の縦断側面図、(B)は(A)の部分拡大図である。A vertical side view of the chair, (B) is a partially enlarged view of (A).

(1).椅子の概略
次に、本願発明の実施形態を図面に基づいて説明する。まず、概要を説明する。図1に示すように、椅子は、平面視略四角形の座1と、その左右両側に配置した一対ずつ前脚2及び後ろ脚3とを備えており、左右の前脚2は、その下部が板状のフロントジョイント材4によって連結されて、上端部は背もたれ板5によって連結されている。他方、左右の後ろ脚3は、その下部が板状のリアジョイント材6によって連結されている。
(1). Outline of Chair Next, an embodiment of the present invention will be described with reference to the drawings. First, an outline will be described. As shown in FIG. 1, the chair includes a seat 1 having a substantially quadrangular plan view, and a pair of front legs 2 and rear legs 3 arranged on both left and right sides of the seat 1, and the left and right front legs 2 have a plate-like lower portion. It is connected by the front joint material 4 of the above, and the upper end portion is connected by the backrest plate 5. On the other hand, the lower portions of the left and right hind legs 3 are connected by a plate-shaped rear joint member 6.

前脚2と後ろ脚3とは、座1よりもやや高い位置に設けた継手金具7を介して、前後回動自在に連結されている。すなわち、継手金具7は前脚2の背面に形成したスリットに嵌め込まれていて、ビス(図示せず)によって前脚2に固定されている。そして、継手金具7の先端部は、後ろ脚3の上端部に形成したスリットに嵌め込まれていて、左右長手のボルト8(図1(B)参照)によって、後ろ脚3に連結されている。従って、前脚2と後ろ脚3とは、ボルト8を支点にして相対回動する。 The front legs 2 and the rear legs 3 are rotatably connected to each other via a joint fitting 7 provided at a position slightly higher than the seat 1. That is, the joint fitting 7 is fitted into a slit formed on the back surface of the front leg 2, and is fixed to the front leg 2 by a screw (not shown). The tip of the joint fitting 7 is fitted into a slit formed in the upper end of the rear leg 3, and is connected to the rear leg 3 by left and right longitudinal bolts 8 (see FIG. 1B). Therefore, the front leg 2 and the rear leg 3 rotate relative to each other with the bolt 8 as a fulcrum.

後ろ脚3の下端部には、側面視半円状の突起9を設けている。図3(C)に示すように、突起9が前脚2に当たることにより、折り畳んだ状態で前脚2と後ろ脚3とは平行な姿勢に保持される。 A semicircular protrusion 9 is provided on the lower end of the rear leg 3. As shown in FIG. 3C, when the protrusion 9 hits the front leg 2, the front leg 2 and the rear leg 3 are held in a parallel posture in the folded state.

前脚2、後ろ脚3、背もたれ板5、ジョイント材4,6は木製である。前脚2及び後ろ脚3は概ね角棒状の形態であり、前脚2の上端部を前傾部2aと成して、前傾部2aの上端に水平状の肘当て10を一体に形成している。前傾部2aと肘当て10とを備えた前脚2は、角材を曲げ加工して形成することも可能であるし、板材の削り出しによって形成することも可能である。 The front legs 2, the rear legs 3, the backrest plate 5, and the joint materials 4 and 6 are made of wood. The front leg 2 and the rear leg 3 have a substantially square rod shape, and the upper end portion of the front leg 2 is formed as a forward tilt portion 2a, and a horizontal elbow pad 10 is integrally formed at the upper end of the forward tilt portion 2a. .. The front leg 2 provided with the forward tilted portion 2a and the elbow pad 10 can be formed by bending a square timber, or can be formed by carving out a plate material.

背もたれ板5は、平面視で後ろに膨れた(後ろ向き凸状になった)形態であり、左右両端に、上下幅を狭くした前向き部5aが形成されている。そして、前脚2の前傾部2a及び肘当て10の内側面に切り欠き部11を形成して、この切り欠き部11に背もたれ板5の前向き部5aを嵌め込んで、ビス12(図1(A),図5参照)で固定している。なお、前脚2の前傾部2a及び肘当て10には、ビス12がねじ込まれる鬼目ナットを埋設している。 The backrest plate 5 has a shape that bulges backward (convex toward the rear) in a plan view, and front-facing portions 5a having a narrowed vertical width are formed at both left and right ends. Then, a notch portion 11 is formed on the forward tilted portion 2a of the front leg 2 and the inner side surface of the elbow rest 10, and the forward-facing portion 5a of the backrest plate 5 is fitted into the notch portion 11 to fit the screw 12 (FIG. 1 (FIG. 1). A), see Fig. 5). A demon nut into which a screw 12 is screwed is embedded in the forward tilted portion 2a and the elbow pad 10 of the front leg 2.

(2).座の構造
図2(A)(B)や図5に示すように、座1は、木製の座板14とその上面に重ねたクッション体15とを備えており、クッション体15は、クロス等の表皮材16で上から覆われている。なお、クッション体15は、発泡ポリウレタン等の発泡樹脂材が使用されている。
(2). Structure of the seat As shown in FIGS. 2A, 2B and 5, the seat 1 includes a wooden seat plate 14 and a cushion body 15 stacked on the upper surface thereof, and the cushion body 15 is provided. Is covered from above with a skin material 16 such as a cloth. The cushion body 15 is made of a foamed resin material such as polyurethane foam.

座板14は、当該座板14の外形と相似形の大きな抜き穴17が空いていて枠状に形成されており、上面に、編地又は織地のような布帛(メッシュ材)から成る弾性サポート材18が張られている。弾性サポート材18には、合成樹脂製の弾性糸が使用されており、柔軟でかつ着座者の荷重を支え得る強靱性を備えている。 The seat plate 14 has a large punched hole 17 having a shape similar to the outer shape of the seat plate 14 and is formed in a frame shape. An elastic support made of a knitted fabric or a woven fabric (mesh material) on the upper surface thereof. The material 18 is stretched. An elastic thread made of synthetic resin is used for the elastic support material 18, which is flexible and has toughness capable of supporting the load of the seated person.

図5(B)に示すように、座板14の上面に環状溝19を形成しており、クッション体15を覆う表皮材16の周縁部は、環状溝19の底面にタッカーで固定されており、更に、環状溝19には、チューブ状の押さえ具20が圧入されている。従って、環状溝19は殆ど見えない状態になっていて、美観に優れている。弾性サポート材18の外周縁は環状溝19には至っておらず、外周縁部がタッカーで座板14に固定されている。 As shown in FIG. 5B, an annular groove 19 is formed on the upper surface of the seat plate 14, and the peripheral edge of the skin material 16 covering the cushion body 15 is fixed to the bottom surface of the annular groove 19 with a tacker. Further, a tubular pressing tool 20 is press-fitted into the annular groove 19. Therefore, the annular groove 19 is almost invisible and has an excellent aesthetic appearance. The outer peripheral edge of the elastic support member 18 does not reach the annular groove 19, and the outer peripheral edge portion is fixed to the seat plate 14 by a tacker.

例えば図5(A)のとおり、座板14の左右両側部の下面にセンターブラケット21がビスで固定されており、センターブラケット21に金属パイプ製の支軸22が挿通されている一方、図4(B)に明示するように、前脚2に、支軸22の端部を後ろから嵌め込みできる切り欠き溝23が形成されており、切り欠き溝23に嵌め入れた支軸22に対して、外側からボルト24がねじ込まれている。従って、支軸22は、左右の前脚2に対して回転不能に固定されている。支軸22は、概ねの抜き穴17の前後中間部の下方に位置している。 For example, as shown in FIG. 5A, the center bracket 21 is fixed to the lower surfaces of the left and right side portions of the seat plate 14 with screws, and the support shaft 22 made of a metal pipe is inserted through the center bracket 21, while FIG. 4 As specified in (B), the front leg 2 is formed with a notch groove 23 into which the end portion of the support shaft 22 can be fitted from behind, and is outside the support shaft 22 fitted in the notch groove 23. The bolt 24 is screwed in from. Therefore, the support shaft 22 is non-rotatably fixed to the left and right front legs 2. The support shaft 22 is located below the front-rear intermediate portion of the general hole 17.

この場合、前脚2は後傾姿勢に傾斜しているが、切り欠き溝23は水平状に形成している。従って、支軸22を安定的に支持できる。すなわち、切り欠き溝23か前脚2の軸心に対して側面視で直交していると、切り欠き溝23は後傾姿勢になるため、支軸22に作用した下向きの荷重Fに後ろ向きの分力が発生するが、本実施形態のように切り欠き溝23を水平姿勢に形成すると、下向きの荷重Fに後ろ向きの分力は発生せず、荷重Fを切り欠き溝23の下面で安定的に支持できる。 In this case, the front leg 2 is inclined backward, but the notch groove 23 is formed horizontally. Therefore, the support shaft 22 can be stably supported. That is, if the notch groove 23 or the axial center of the front leg 2 is orthogonal to the axial center in a side view, the notch groove 23 is in a backward tilted posture, so that the downward load F acting on the support shaft 22 is applied backward. Although a force is generated, when the notch groove 23 is formed in a horizontal posture as in the present embodiment, a backward component force is not generated in the downward load F, and the load F is stably applied to the lower surface of the notch groove 23. I can support it.

従って、支軸22の取り付けの容易性を損なうことなく、前脚2による座1の支持強度に優れている。なお、切り欠き溝23は、後ろに向けて高くなるように、若干の角度で後傾させてもよい。 Therefore, the support strength of the seat 1 by the front legs 2 is excellent without impairing the ease of mounting the support shaft 22. The notch groove 23 may be tilted backward at a slight angle so as to be higher toward the rear.

センターブラケット21は木製でもよいし、合成樹脂製又は金属製でもよい。支軸22とセンターブラケット21とは相対回転するため、センターブラケット21を木製とする場合でも、磨耗防止のために樹脂製のスリーブを嵌着するのが好ましい。 The center bracket 21 may be made of wood, synthetic resin, or metal. Since the support shaft 22 and the center bracket 21 rotate relative to each other, it is preferable to fit a resin sleeve to prevent wear even when the center bracket 21 is made of wood.

例えば図4に示すように、後ろ脚3の内側面に上下長手のガイド溝25が形成されている一方、座板14の下面のうち左右端部にはリアブラケット26がそれぞれビス27で固定されており、リアブラケット26に設けた起立片26aに、ガイド溝25にスライド自在に嵌まるコロ28が取り付けられている。なお、コロ28に代えて、樹脂製等のスライダを使用することも可能である。ガイド溝25は、金属製又は樹脂製のチャンネル材で構成されている。 For example, as shown in FIG. 4, while the vertically elongated guide grooves 25 are formed on the inner side surface of the rear leg 3, the rear brackets 26 are fixed to the left and right ends of the lower surface of the seat plate 14 by screws 27, respectively. A roller 28 that is slidably fitted in the guide groove 25 is attached to the upright piece 26a provided on the rear bracket 26. It is also possible to use a slider made of resin or the like instead of the roller 28. The guide groove 25 is made of a metal or resin channel material.

(3).座を中心としたまとめ
座1をその前端が上になるように跳ね上げ回動させると、コロ28がガイド溝25に沿って下方に移動する。すると、後ろ脚3が前脚2に向けて押されるため、前脚2と後ろ脚3とは平行な姿勢に相対回動する。従って、椅子は折り畳まれる。
(3). Summary centered on the seat When the seat 1 is flipped up and rotated so that its front end faces upward, the roller 28 moves downward along the guide groove 25. Then, since the rear leg 3 is pushed toward the front leg 2, the front leg 2 and the rear leg 3 rotate relative to each other in a parallel posture. Therefore, the chair is folded.

クッション体15は着座者の臀部の形状に倣うように変形するが、座板14には抜き穴17が空いているため、着座者の押圧力が作用すると、クッション体15は、着座者の臀部にフィットしつつ、弾性サポート材18を伸び変形させて下方に沈み込む。従って、高いフィットとクッション性とを確保できる。このため、折り畳み式の椅子でありながら、快適な座り心地を得ることができる。 The cushion body 15 is deformed to follow the shape of the buttocks of the seated person, but since the seat plate 14 has a hole 17, when the pressing force of the seated person acts, the cushion body 15 is deformed to follow the buttocks of the seated person. The elastic support material 18 is stretched and deformed to sink downward while fitting to. Therefore, high fit and cushioning can be ensured. Therefore, even though it is a foldable chair, it is possible to obtain a comfortable sitting comfort.

弾性サポート材18は、着座者の荷重によって伸び変形するが、一般成人を使用者と想定して、例えば、座板14の下面程度までの伸びるように設定している。他方、支軸22はセンターブラケット21に取り付けられているため、支軸22と座板14との間には若干の間隔が空いている。従って、通常の使用状態では、弾性サポート材18が伸び変形しても支軸22に当たることはない。従って、着座者に違和感を与えることなく、快適な使用状態を維持できる。 The elastic support material 18 is stretched and deformed by the load of the seated person, but is set so as to stretch to about the lower surface of the seat plate 14, for example, assuming a general adult as a user. On the other hand, since the support shaft 22 is attached to the center bracket 21, there is a slight gap between the support shaft 22 and the seat plate 14. Therefore, under normal use conditions, the elastic support material 18 does not hit the support shaft 22 even if it is stretched and deformed. Therefore, it is possible to maintain a comfortable use state without giving a feeling of strangeness to the seated person.

本実施形態の椅子は、脚2,3と背もたれ板5とジョイント材4,6とから成る脚装置は1つのユニットとして組み立てられており、この脚装置に座板14を取り付けて完成品になる。すなわち、座1と脚装置とは別々の場所で組み立てられており、これらを組み立て工場で完成品と成すノックダウン方式が採られている。 In the chair of the present embodiment, the leg device including the legs 2 and 3, the backrest plate 5 and the joint members 4 and 6 is assembled as one unit, and the seat plate 14 is attached to the leg device to complete the product. .. That is, the seat 1 and the leg device are assembled at different places, and a knockdown method is adopted in which these are assembled as a finished product at an assembly factory.

そして、支軸22は前脚2の切り欠き溝23に後ろから嵌め込むものであるため、支軸22が予め座1に取り付けられていて、脚装置は予め組み立てられてユニット化されていても、前脚2に対する座板14の取り付けを簡単に行える。また、座板14の後端部はリアブラケット26介して後ろ脚3に取り付けられているため、コロ28をガイド溝25に嵌め入れてからリアブラケット26をビス27で座板14に固定するという手順により、ユニット化された脚装置の後ろ脚3に対して座板14を簡単に取り付けできる。 Since the support shaft 22 is fitted into the notch groove 23 of the front leg 2 from behind, even if the support shaft 22 is attached to the seat 1 in advance and the leg device is preassembled and unitized, the front leg 2 The seat plate 14 can be easily attached to the seat plate 14. Further, since the rear end portion of the seat plate 14 is attached to the rear leg 3 via the rear bracket 26, the roller 28 is fitted into the guide groove 25 and then the rear bracket 26 is fixed to the seat plate 14 with screws 27. According to the procedure, the seat plate 14 can be easily attached to the rear leg 3 of the unitized leg device.

(4).肘当てと背もたれ板とに関するまとめ
本実施形態では前脚2に肘当て10が形成されているため、折り畳み式椅子でありながらユーザーフレンドリーで高い品質を確保できる。また、背もたれ板5は、その前向き部5aが前脚2の内側面に固定されているため、背もたれ板5を、前脚2に対して簡単かつ強固に固定できる。
(4). Summary of elbow rest and backrest plate In this embodiment, since the elbow rest 10 is formed on the front leg 2, it is possible to ensure user-friendly and high quality even though it is a foldable chair. Further, since the front facing portion 5a of the backrest plate 5 is fixed to the inner side surface of the front leg 2, the backrest plate 5 can be easily and firmly fixed to the front leg 2.

また、背もたれ板5は、図3(A)に示すように、前向き部5aを有していて平面視U形になっているため、着座者の身体のホールド性に優れている。すなわち、背もたれ板5は平面視でU形に大きく曲がっていると、着座者が上半身を左右動させても、胴体部が背もたれ板5に当たるため、着座者の胴体部が背もたれ板5で深く包まれた状態になって、着座者の快適性を向上できる。 Further, as shown in FIG. 3A, the backrest plate 5 has a forward facing portion 5a and has a U-shape in a plan view, so that the seater's body is excellently held. That is, if the backrest plate 5 is largely bent in a U shape in a plan view, even if the seated person moves the upper body left and right, the torso portion hits the backrest plate 5, so that the torso portion of the seated person is deeply wrapped by the backrest plate 5. You can improve the comfort of the seated person by getting sick.

そして、前脚2に前傾部2aと肘当て10とを設けているため、背もたれ板5の前向き部5aを設けた場合でありながら、前向き部5aを前脚2に固定することができる。従って、本実施形態では、背もたれ板5をU形に曲げて着座者のホールド性を向上させることが、前脚2に前傾部2aと肘当て10を設けたことによって容易に実現されている。 Since the front leg 2 is provided with the forward tilted portion 2a and the elbow pad 10, the forward facing portion 5a can be fixed to the front leg 2 even when the front facing portion 5a of the backrest plate 5 is provided. Therefore, in the present embodiment, it is easily realized that the backrest plate 5 is bent into a U shape to improve the holdability of the seated person by providing the front leg 2 with the forward tilted portion 2a and the elbow pad 10.

さて、背もたれ板5の前向き部5aの上面と肘当て10の上面とを同一面に設定して、背もたれ板5の前向き部5aの前面と前傾部2aの前面とを同一面に設定することは好ましいが、現実には、部材の加工誤差を無くすことはできないため、僅かながら段差が現れることは回避し難い。そして、段差が部分的に発生していると、段差の寸法は極僅かであっても目に付いて製造不良であるかのような違和感を与えてしまうことがある。 By the way, the upper surface of the forward facing portion 5a of the backrest plate 5 and the upper surface of the elbow rest 10 are set to be the same surface, and the front surface of the forward facing portion 5a of the backrest plate 5 and the front surface of the forward tilted portion 2a are set to be the same surface. However, in reality, since the processing error of the member cannot be eliminated, it is difficult to avoid the appearance of a slight step. If the step is partially generated, even if the size of the step is extremely small, it may be noticeable and give a sense of discomfort as if it were a manufacturing defect.

そこで、本実施形態では、例えば図1(C)に示すように、背もたれ板5の前向き部5aの上面は、僅かながら肘当て10の上方にはみ出させて、背もたれ板5の前向き部5aの前面は、僅かながら前傾部2aの前方にはみ出させている。すなわち、背もたれ板5の前向き部5aの上面及び前面を、肘当て10及び前傾部2aに対して積極的に段上がりさせている。 Therefore, in the present embodiment, for example, as shown in FIG. 1C, the upper surface of the front-facing portion 5a of the backrest plate 5 slightly protrudes above the elbow rest 10, and the front surface of the front-facing portion 5a of the backrest plate 5 is slightly projected. Slightly protrudes forward of the forward tilted portion 2a. That is, the upper surface and the front surface of the forward-facing portion 5a of the backrest plate 5 are positively raised with respect to the elbow rest 10 and the forward tilted portion 2a.

このように、背もたれ板5の前向き部5aの上面及び前面の全体を肘当て10及び前傾部2aに対して段上がりさせると、デザイン的な統一は成されているため人に違和感を与えることはないと共に、部材の加工に際して多少の寸法誤差があっても、誤差は段部に吸収されて目立つことはない。従って、部材の加工誤差は許容しつつ、人に違和感を与えない高い品質を保持できる。 In this way, if the entire upper surface and the front surface of the forward facing portion 5a of the backrest plate 5 are raised with respect to the elbow rest 10 and the forward tilting portion 2a, the design is unified and the person feels uncomfortable. In addition, even if there is some dimensional error in the processing of the member, the error is absorbed by the step portion and is not noticeable. Therefore, it is possible to maintain a high quality that does not give a sense of discomfort to a person while allowing a processing error of the member.

以上、本願発明の実施形態を説明したが、本願発明は他にも様々に具体化できる。例えば、座は、クッション体を備えずに弾性サポート材を露出させた構造であってもよい。また、布帛性の弾性サポート材を使用する場合、弾性サポート材を座板の外周から下面に巻き込むと共に、クッション体を覆う表皮材の周縁部も座板の下面に巻き込んで、表皮材の周縁部で弾性サポート材の周縁部を覆うことも可能である。 Although the embodiments of the present invention have been described above, the present invention can be embodied in various ways. For example, the seat may have a structure in which the elastic support material is exposed without providing a cushion body. Further, when a fabric elastic support material is used, the elastic support material is wound from the outer periphery of the seat plate to the lower surface, and the peripheral edge portion of the skin material covering the cushion body is also wound around the lower surface of the seat plate to form the peripheral edge portion of the skin material. It is also possible to cover the peripheral edge of the elastic support material with.

また、実施形態では前脚2が後ろ脚3よりも高くなっているが、後ろ脚3を前脚2よりも高くして、後ろ脚3の上端に肘当てを設けることも可能である。この場合も、背もたれ板5の前向き部5aを後ろ脚3の上端部及び肘当て10の内面に嵌め込み固定すると好適である。 Further, although the front leg 2 is higher than the rear leg 3 in the embodiment, it is also possible to make the rear leg 3 higher than the front leg 2 and provide an elbow pad at the upper end of the rear leg 3. Also in this case, it is preferable to fit and fix the forward facing portion 5a of the backrest plate 5 to the upper end portion of the rear leg 3 and the inner surface of the elbow pad 10.

背もたれ板に、人が手先を挿入できる左右長手の穴を空けてもよい。この場合は、人は背もたれ板を掴んで移動させたり持ち上げたりすることができる。また、背もたれ板の前面にクッション体を張ることも可能である。 The backrest plate may be perforated with long left and right holes into which a person can insert a hand. In this case, the person can grab the backrest plate and move or lift it. It is also possible to put a cushion body on the front surface of the backrest plate.

本願発明は、木製等の折り畳み式椅子に具体化できる。従って、産業上利用できる。 The invention of the present application can be embodied in a folding chair made of wood or the like. Therefore, it can be used industrially.

1 座
2 前脚
2a 前傾部
3 後ろ脚
5 背もたれ板
5a 前向き部
7 継手金具
10 肘当て
14 座板
15 クッション体
16 表皮材
17 抜き穴
18 弾性サポート材
19 環状溝
20 押さえ具
21 センターブラケット
22 支軸
23 切り欠き溝
25 ガイド溝
26 リアブラケット
28 コロ(スライダー)
1 Seat 2 Front leg 2a Forward tilted part 3 Rear leg 5 Backrest plate 5a Forward part 7 Joint fitting 10 Elbow pad 14 Seat plate 15 Cushion body 16 Skin material 17 Pull hole 18 Elastic support material 19 Ring groove 20 Holding tool 21 Center bracket 22 Support Shaft 23 Notch groove 25 Guide groove 26 Rear bracket 28 Roller (slider)

Claims (6)

座とその左右両側に配置された一対の前脚及び後ろ脚を有していて、
前記前後の脚は、前記座よりも高い位置を回動軸心として前後方向に相対回動し得るように連結されている一方、
前記座は、前記前脚及び後ろ脚に対して、左右長手の軸心回りに相対回動し得るように連結されており、前記座と後ろ脚との連結位置を移動可能とすることにより、前記座をその前端が上になるように跳ね上げ回動させるとこれに連動して前記前後の脚が折り畳まれる構成であって、
前記座は、着座者の臀部の下方に抜き穴が開口した枠状の座板を備えており、前記座板の上面に、着座者の荷重で弾性変形可能な弾性サポート材が前記抜き穴を覆った状態で配置されている一方、
前記座の下面部に、当該座を前記前脚に連結する左右長手の支軸が、前記抜き穴の下方に位置するように配置されている、
折り畳み式椅子。
It has a seat and a pair of front and rear legs located on both its left and right sides.
The front and rear legs are connected so that they can rotate relative to each other in the front-rear direction with a position higher than the seat as the rotation axis.
The seat is connected to the front and rear legs so as to be able to rotate relative to the left and right longitudinal axial centers, and the connection position between the seat and the rear legs can be moved to move the seat. When the seat is flipped up and rotated so that its front end is on top, the front and rear legs are folded in conjunction with this.
The seat is provided with a frame-shaped seat plate having a hole below the buttocks of the seated person, and an elastic support material elastically deformable by the load of the seated person provides the hole on the upper surface of the seat plate. While it is placed covered
On the lower surface of the seat, left and right longitudinal support shafts that connect the seat to the front legs are arranged so as to be located below the punched holes.
Folding chair.
前記支軸を、前記座板の左右側部の下面に突設したブラケットに取り付けることにより、前記支軸と弾性サポート材との間に、前記弾性サポート材が前記支軸に当たることなく伸び変形することを許容する間隔が空いている、
請求項1に記載した折り畳み式椅子。
By attaching the support shaft to a bracket projecting from the lower surface of the left and right side portions of the seat plate, the elastic support material is stretched and deformed between the support shaft and the elastic support material without hitting the support shaft. There is an interval to allow that,
The foldable chair according to claim 1.
前記座板の上面には、前記弾性サポート材を覆うようにクッション体が張られている、
請求項1又は2に記載した折り畳み式椅子。
A cushion body is stretched on the upper surface of the seat plate so as to cover the elastic support material.
The foldable chair according to claim 1 or 2.
前記前脚には、前記支軸の端部を後ろから嵌め込みできる切り欠き溝が形成されている一方、
前記後ろ脚の内側面に、当該後ろ脚と前記座との連結位置を移動させるための上下長手のガイド溝が形成されており、前記座板の後部下面に、前記ガイド溝に移動自在に嵌まったスライダーを有するブラケットがビスで固定されている、
請求項1〜3のうちのいずれかに記載した折り畳み式椅子。
The front leg is formed with a notch groove into which the end of the support shaft can be fitted from behind.
A vertically elongated guide groove for moving the connecting position between the rear leg and the seat is formed on the inner side surface of the rear leg, and the guide groove is movably fitted on the lower surface of the rear portion of the seat plate. Brackets with stowed sliders are fixed with screws,
The foldable chair according to any one of claims 1 to 3.
前記前脚は、上方に行くに従って後ろにずれるように後傾しており、前記前脚の上端部に肘当てが一体に形成されている、
請求項1〜4のうちのいずれかに記載した折り畳み式椅子。
The front leg is tilted backward so as to shift backward as it goes upward, and an elbow pad is integrally formed at the upper end of the front leg.
The foldable chair according to any one of claims 1 to 4.
前記左右の前脚の上部に固定された背もたれ板を備えており、前記背もたれ板は、平面視で後ろ向きに膨れるように湾曲しつつ左右両端に前向き部が形成されていて略U形になっている一方、
前記前脚の上部内側面に、前記背もたれ板の前向き部が嵌め込まれる切り欠き部を形成しており、前記背もたれ板の前向き部が前記切り欠き部に固定されている、
請求項1〜5のうちのいずれかに記載した折り畳み式椅子。
A backrest plate fixed to the upper part of the left and right front legs is provided, and the backrest plate is substantially U-shaped with forward facing portions formed on both left and right ends while being curved so as to bulge backward in a plan view. on the other hand,
A notch is formed on the inner surface of the upper part of the front leg into which the front-facing portion of the backrest plate is fitted, and the front-facing portion of the backrest plate is fixed to the notch.
The foldable chair according to any one of claims 1 to 5.
JP2019085925A 2019-04-26 2019-04-26 folding chair Active JP7312010B2 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4191419A (en) * 1978-10-26 1980-03-04 Kirkpatrick Michael F Hinge mechanism for folding chairs
JPH0240233U (en) * 1988-09-12 1990-03-19
US6099073A (en) * 1999-04-16 2000-08-08 Drake Corp. Folding chair
JP2005349053A (en) * 2004-06-14 2005-12-22 Aiko Kk Foldable chair
JP3178288U (en) * 2012-06-28 2012-09-06 株式会社イヨベ工芸社 Folding chair
JP3192318U (en) * 2014-05-28 2014-08-07 三惠工業株式会社 Folding chair seat and folding chair using the same
US20150201759A1 (en) * 2014-01-18 2015-07-23 Lifttime Products, Inc. Chair

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4191419A (en) * 1978-10-26 1980-03-04 Kirkpatrick Michael F Hinge mechanism for folding chairs
JPH0240233U (en) * 1988-09-12 1990-03-19
US6099073A (en) * 1999-04-16 2000-08-08 Drake Corp. Folding chair
JP2005349053A (en) * 2004-06-14 2005-12-22 Aiko Kk Foldable chair
JP3178288U (en) * 2012-06-28 2012-09-06 株式会社イヨベ工芸社 Folding chair
US20150201759A1 (en) * 2014-01-18 2015-07-23 Lifttime Products, Inc. Chair
JP3192318U (en) * 2014-05-28 2014-08-07 三惠工業株式会社 Folding chair seat and folding chair using the same

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