JP3236464U - Seating and standing auxiliary chair - Google Patents

Abstract

【課題】着座の際、着座者のお尻が確実に支えられ、着座者の腰の負担が低減されるとともに、起立の際の着座者の起立にも補助できる着座起立補助椅子を提供する。【解決手段】椅子１の座枠２は、座枠部材２１と、座面部材２２と、当該座面部材２２が座枠部材２１に対して回動可能に座枠部材２１と座面部材２２を連結させる連結部材２３と、座面部材２２の座枠部材２１に対する回動を緩衝したり補助したりするガスシリンダー２４とを備え、ガスシリンダー２４はその基端が座枠部材２１に設けられている付勢機構連結ブロックに摺動可能に連結され、その先端が座面部材２２に回動可能に連結され、付勢機構連結ブロックは、ガスシリンダー２４の基端が摺動するためのガイド溝と、ガスシリンダー２４の基端の摺動をロックするロック溝とを備えている。【選択図】図１PROBLEM TO BE SOLVED: To provide a seating and standing assist chair which can surely support the buttocks of a seated person at the time of sitting, reduce the burden on the waist of the seated person, and assist the seated person to stand up at the time of standing up. SOLUTION: A seat frame 2 of a chair 1 has a seat frame member 21, a seat surface member 22, and a seat frame member 21 and a seat surface member 22 so that the seat surface member 22 can rotate with respect to the seat frame member 21. The gas cylinder 24 is provided with a connecting member 23 for connecting the members and a gas cylinder 24 for buffering or assisting the rotation of the seat surface member 22 with respect to the seat frame member 21, and the base end of the gas cylinder 24 is provided on the seat frame member 21. The urging mechanism connecting block is slidably connected, its tip is rotatably connected to the seat member 22, and the urging mechanism connecting block is a guide for sliding the base end of the gas cylinder 24. It is provided with a groove and a lock groove for locking the sliding of the base end of the gas cylinder 24. [Selection diagram] Fig. 1

Description

本考案は、椅子の座面を傾斜できるようにし、利用者の着座と起立を補助するための着座起立補助椅子に関するものである。 The present invention relates to a seating / standing assist chair for assisting a user in sitting and standing by allowing the seat surface of the chair to be tilted.

従来から着座姿勢から自力で起立することが困難な障害者や高齢者の起立を助けるための起立補助椅子は種々提供されているが、従来のこの種の起立補助椅子は、殆ど自力では立つことができない人を対象としたものであり、そのため座部、背もたれ部、肘掛け等がすべて電動により昇降する機構によるものである。
この種の起立補助椅子は電動装置が使われているため、椅子の構造が極めて大掛かりなものとなり、椅子の重量が著しく嵩み、移動させるにも容易でなく、日常的に使用する椅子としては不適な構造であると同時に極めて高価なものとなっており、手軽に使用することができなかった。
そして、例えば特許文献１のような簡単な構造により使用者の起立を補助する起立補助椅子が開発されている。 Conventionally, various standing assist chairs for assisting the standing of persons with disabilities and the elderly who have difficulty standing up by themselves from a sitting posture have been provided, but the conventional standing assist chairs of this type are almost self-standing. It is intended for people who cannot do so, and therefore the seat, backrest, armrests, etc. are all driven by a mechanism that moves up and down electrically.
Since this type of upright auxiliary chair uses an electric device, the structure of the chair is extremely large, the weight of the chair is extremely heavy, it is not easy to move, and it is not easy to move, so it is a chair for daily use. At the same time as having an unsuitable structure, it was extremely expensive and could not be used easily.
Then, an upright assist chair that assists the user in standing up has been developed by a simple structure as in Patent Document 1, for example.

しかし、腰の弱いお年寄りにとって、起立がもちろん、着座の補助が必要になっており、つまり、着座する際、低い座面に座ると、膝や腰に負担がかかる場合もあり、着座の際、お尻を確実に支えながらゆっくり座ることができる着座補助可能な椅子が期待されている。 However, elderly people with weak hips need assistance in sitting as well as standing up, which means that sitting on a low seating surface may put a strain on the knees and hips when sitting. , A chair that can assist sitting is expected to be able to sit slowly while firmly supporting the buttocks.

特開２０１９－１５０２１７号公報Japanese Unexamined Patent Publication No. 2019-150217

本考案の解決課題は、着座の際、着座者のお尻が確実に支えられ、着座者の腰の負担が低減されるとともに、起立の際の着座者の起立にも補助できる着座起立補助椅子を提供することである。 The problem to be solved by the present invention is that the buttock of the occupant is surely supported when sitting, the burden on the occupant's waist is reduced, and the occupant's standing assist chair can also assist the occupant's standing up when standing up. Is to provide.

本考案によれば、少なくとも座枠を有する着座起立補助椅子において、前記座枠は、座枠部材と、座面部材と、前記座枠部材と前記座面部材を回動可能に連結するための連結部材と、前記座枠部材に対する前記座面部材の回動をアシストするための付勢機構とを備え、前記付勢機構はその基端が前記座枠部材に設けられている付勢機構連結ブロックに摺動可能に連結され、その先端が前記座面部材に回動可能に連結され、前記付勢機構連結ブロックは、前記付勢機構の基端が摺動するためのガイド溝と、前記付勢機構の基端の摺動をロックするロック溝とを備え、着座又は起立の使用状態において、前記付勢機構の基端は摺動不能に前記ロック溝によりロックされ、前記座面部材に対する付勢機構の付勢力によって利用者の着座又は起立がアシストされるようになり、座面部材を折り畳む収納状態において、前記付勢機構の基端を前記ロック溝から脱出させ、前記ガイド溝に沿って摺動させることによって、前記座面部材に対する付勢機構の付勢力が解除されるようにされていることを特徴とする着座起立補助椅子が提供され、上記課題が解決される。 According to the present invention, in a seating and standing auxiliary chair having at least a seat frame, the seat frame is for rotatably connecting the seat frame member, the seat surface member, the seat frame member, and the seat surface member. The connecting member is provided with an urging mechanism for assisting the rotation of the seat surface member with respect to the seat frame member, and the urging mechanism is connected to the urging mechanism whose base end is provided on the seat frame member. It is slidably connected to the block, its tip is rotatably connected to the seat member, and the urging mechanism connecting block has a guide groove for sliding the base end of the urging mechanism and the said. It is provided with a lock groove that locks the sliding of the base end of the urging mechanism, and the base end of the urging mechanism is non-slidenly locked by the lock groove in a seated or standing state, and is locked with respect to the seat surface member. The urging force of the urging mechanism assists the user in sitting or standing up, and in the stored state in which the seat surface member is folded, the base end of the urging mechanism is escaped from the lock groove and along the guide groove. The seating and standing assist chair is provided so as to release the urging force of the urging mechanism with respect to the seat surface member by sliding the chair, and the above-mentioned problems are solved.

また、好ましいのは、前記付勢機構の先端は、付勢機構連結部材を介して前記座面部材に回動可能に連結され、前記付勢機構連結部材には１個または２個以上の軸支孔が設けられ、前記付勢機構の先端は、前記軸支孔に軸支されている軸部材を介して前記座面部材に回動可能に連結されている。 Further, it is preferable that the tip of the urging mechanism is rotatably connected to the seat surface member via the urging mechanism connecting member, and one or two or more shafts are connected to the urging mechanism connecting member. A support hole is provided, and the tip of the urging mechanism is rotatably connected to the seat surface member via a shaft member pivotally supported by the shaft support hole.

また、好ましいのは、前記付勢機構の基端には、当該基端を前記ロック溝から脱出させて前記ガイド溝に摺動させる切替部材が設けられている。 Further, it is preferable that the base end of the urging mechanism is provided with a switching member that allows the base end to escape from the lock groove and slide into the guide groove.

また、より好ましいのは、前記付勢機構の基端には、前記ロック溝に沿って摺動し、または前記ロック溝に嵌め込むピン部材が設けられ、前記切替部材は当該ピン部材と連結されている。 More preferably, the base end of the urging mechanism is provided with a pin member that slides along the lock groove or fits into the lock groove, and the switching member is connected to the pin member. ing.

さらに、好ましいのは、前記座枠部材に対する前記座面部材の回動方向を時計回り方向とした際、前記付勢機構の基端に対する前記付勢機構の回動方向が反時計回り方向になるように構成されていることを特徴とする請求項１～４のいずれか１項に記載の着座起立補助椅子。 Further, it is preferable that when the rotation direction of the seat surface member with respect to the seat frame member is a clockwise direction, the rotation direction of the urging mechanism with respect to the base end of the urging mechanism is a counterclockwise direction. The seating and standing assist chair according to any one of claims 1 to 4, wherein the chair is configured as follows.

本考案によれば、着座の際は付勢機構の付勢力で跳ね上がっている座面部材に利用者がゆっくり腰を下ろすと座面部材が付勢機構の付勢力を抗しながらスーッと下がり通常の着座姿勢になる。一方、起立の際は肘掛や杖などを持ってゆっくり腰を上げると座面部材が付勢機構の付勢力で跳ね上がり、立ち上がり動作を優しくアシストすることができる。
また、座面部材に対する付勢機構の付勢力が解除されることによって椅子が容易に収納されることができる。 According to the present invention, when the user slowly sits down on the seating surface member that is jumped up by the urging force of the urging mechanism when seated, the seating surface member smoothly lowers while resisting the urging force of the urging mechanism. Become a sitting posture. On the other hand, when standing up, if you slowly raise your hips by holding an accoudoir or a cane, the seat member will jump up with the urging force of the urging mechanism, and you can gently assist the standing up motion.
Further, the chair can be easily stored by releasing the urging force of the urging mechanism against the seat surface member.

本考案の着座起立補助椅子の構成を説明するための分解斜視図。An exploded perspective view for explaining the configuration of the seating and standing auxiliary chair of the present invention. 図１におけるＫ部分の拡大図。An enlarged view of the K portion in FIG. 1. 本考案の着座起立補助椅子の一部材の断面図。Sectional drawing of one member of the sitting upright auxiliary chair of this invention. 本考案の着座起立補助椅子の一部材の説明図。Explanatory drawing of one member of the sitting upright auxiliary chair of this invention. 本考案の着座起立補助椅子の一部材の斜視図。The perspective view of one member of the sitting upright auxiliary chair of this invention. 本考案の着座起立補助椅子の一部材の説明図。Explanatory drawing of one member of the sitting upright auxiliary chair of this invention. 本考案の着座起立補助椅子の状態切替の説明図。An explanatory diagram of state switching of the seating and standing auxiliary chair of the present invention. 本考案の着座起立補助椅子の使用状態の説明図。Explanatory drawing of the use state of the sitting upright auxiliary chair of this invention. 本考案の着座起立補助椅子の各状態を表す斜視図。The perspective view which shows each state of the sitting upright auxiliary chair of this invention. 本考案の着座起立補助椅子の収納状態の説明図。Explanatory drawing of the storage state of the sitting upright auxiliary chair of this invention.

本考案は、各種の椅子の座部に適用することができるが、一実施例を示す図１においては、着座起立補助椅子としての椅子１は、座枠２と背凭れ部３を備えている。つまり、本考案の椅子１は脚部とひじ掛けを有する椅子にも適用できるが、本実施例では、脚部とひじ掛けを省略して主要部だけを詳しく説明するようにしている。 The present invention can be applied to the seats of various chairs, but in FIG. 1 showing an embodiment, the chair 1 as a sitting and standing auxiliary chair includes a seat frame 2 and a backrest 3. .. That is, the chair 1 of the present invention can be applied to a chair having legs and armrests, but in this embodiment, the legs and armrests are omitted and only the main part is described in detail.

前記座枠２は、図１に示すように、座枠部材２１と、座面部材２２と、座面部材２２が座枠部材２１に対して回動可能に座枠部材２１と座面部材２２を連結させる連結部材２３と、座面部材２２の座枠部材２１に対する回動をアシストするための付勢機構とを備えている。当該付勢機構としては、各種のシリンダー機構やモーターやリンクによる付勢機構その他適宜の機構を用いることができるが、図示する本実施例ではガスシリンダー２４を用いた機構が示されている。 As shown in FIG. 1, the seat frame 2 includes a seat frame member 21, a seat surface member 22, and a seat frame member 21 and a seat surface member 22 so that the seat surface member 22 can rotate with respect to the seat frame member 21. It is provided with a connecting member 23 for connecting the members and an urging mechanism for assisting the rotation of the seat surface member 22 with respect to the seat frame member 21. As the urging mechanism, various cylinder mechanisms, urging mechanisms by motors and links, and other appropriate mechanisms can be used, but in the illustrated embodiment, a mechanism using a gas cylinder 24 is shown.

前記座枠部材２１は、椅子フレーム２１１と、当該椅子フレーム２１１の強度を強化するための支持パイプ２１２と、椅子フレーム２１１内に固定され、前記ガスシリンダー２４を取り付けるための取り付け部材２１３とを備えている。 The seat frame member 21 includes a chair frame 211, a support pipe 212 for strengthening the strength of the chair frame 211, and a mounting member 213 fixed in the chair frame 211 for mounting the gas cylinder 24. ing.

前記椅子フレーム２１１は、図１に示すように、略Ｕ字状にパイプを屈曲形成し、水平フレーム部２１１ａと、当該水平フレーム部２１１ａに対して略垂直となる垂直フレーム部２１１ｂとからなり、前記支持パイプ２１２は垂直フレーム部２１１ｂの間に固定され、前記取り付け部材２１３は、水平フレーム部２１１ａ内に固定されている。 As shown in FIG. 1, the chair frame 211 is formed by bending a pipe in a substantially U shape, and includes a horizontal frame portion 211a and a vertical frame portion 211b that is substantially perpendicular to the horizontal frame portion 211a. The support pipe 212 is fixed between the vertical frame portions 211b, and the mounting member 213 is fixed in the horizontal frame portion 211a.

なお、前記取り付け部材２１３は、図１に示すように、横方向支持棒２１３ａと、当該横方向支持棒２１３ａと垂直する２つの縦方向取り付け棒２１３ｂと、当該横方向支持棒２１３ａと垂直し、２つの縦方向取り付け棒２１３ｂの間に位置する２つの縦方向支持棒２１３ｃとを備えている。 As shown in FIG. 1, the mounting member 213 is perpendicular to the lateral support rod 213a, the two vertical mounting rods 213b perpendicular to the lateral support rod 213a, and the lateral support rod 213a. It is provided with two vertical support rods 213c located between the two vertical mounting rods 213b.

前記横方向支持棒２１３ａは、その両端がそれぞれ前記水平フレーム部２１１ａの両辺に固定されており、前記２つの縦方向取り付け棒２１３ｂの一端及び２つの縦方向支持棒２１３ｃの一端がそれぞれ前記横方向支持棒２１３ａに固定されており、前記２つの縦方向取り付け棒２１３ｂの他端及び２つの縦方向支持棒２１３ｃの他端がそれぞれ前記水平フレーム部２１１ａの底辺に固定されている。 Both ends of the horizontal support rod 213a are fixed to both sides of the horizontal frame portion 211a, and one end of the two vertical mounting rods 213b and one end of the two vertical support rods 213c are respectively in the horizontal direction. It is fixed to the support rod 213a, and the other ends of the two vertical mounting rods 213b and the other ends of the two vertical support rods 213c are fixed to the bottom of the horizontal frame portion 211a, respectively.

また、前記２つの縦方向取り付け棒２１３ｂには、それぞれ当該２つの縦方向取り付け棒２１３ｂと垂直して座面（上方）へ延びる２つの突起２１３ｄが設けられている。当該２つの突起２１３ｄは、前記２つの縦方向取り付け棒２１３ｂの前記横方向支持棒２１３ａに近接する位置に所定高さで設けられている。 Further, the two vertical mounting rods 213b are each provided with two protrusions 213d extending vertically to the seat surface (upward) perpendicular to the two vertical mounting rods 213b. The two protrusions 213d are provided at predetermined heights at positions close to the lateral support rods 213a of the two vertical mounting rods 213b.

また、図１及び図２に示すように、前記２つの縦方向取り付け棒２１３ｂには、前記座面部材２２と連結するための座面連結ブロック２１３ｅがそれぞれ設けられている。当該２つの座面連結ブロック２１３ｅは、座面（上方）へ突出するように、前記水平フレーム部２１１ａの底辺に固定される前記２つの縦方向取り付け棒２１３ｂの先端に設けられている。なお、図３は本考案の着座起立補助椅子の一部材としての座面連結ブロックの断面図であり、図３（ａ）は図３（ｂ）におけるＢ－Ｂ線の断面図であり、図３（ｂ）は図３（ａ）におけるＡ－Ａ線の断面図である。図３（ａ）（ｂ）に示すように、当該２つの座面連結ブロック２１３ｅは、底板部２１３ｆと当該底板部２１３ｆに垂直する２つの側板部２１３ｇを備え、その２つの側板部２１３ｇにはそれぞれ前記連結部材２３を軸支するための軸ピン２３２を通す通孔２１３ｈがそれぞれ設けられている。 Further, as shown in FIGS. 1 and 2, the two vertical mounting rods 213b are each provided with a seat surface connecting block 213e for connecting to the seat surface member 22. The two seat surface connecting blocks 213e are provided at the tips of the two vertical mounting rods 213b fixed to the bottom of the horizontal frame portion 211a so as to project toward the seat surface (upward). 3A and 3B are cross-sectional views of a seat surface connecting block as a member of the seating and standing auxiliary chair of the present invention, and FIG. 3A is a cross-sectional view taken along the line BB in FIG. 3B. 3 (b) is a cross-sectional view taken along the line AA in FIG. 3 (a). As shown in FIGS. 3A and 3B, the two seat surface connecting blocks 213e include a bottom plate portion 213f and two side plate portions 213g perpendicular to the bottom plate portion 213f, and the two side plate portions 213g are provided with the bottom plate portion 213g. Each of them is provided with a through hole 213h through which a shaft pin 232 for axially supporting the connecting member 23 is passed.

また、前記２つの縦方向支持棒２１３ｃの間には、前記ガスシリンダー２４の基端２４ａが連結するための付勢機構連結ブロック２１３ｊが設けられている。図４は本考案の着座起立補助椅子の一部材としての付勢機構連結ブロックの説明図であり、図４（ａ）は付勢機構連結ブロックの正面図であり、図４（ｂ）は付勢機構連結ブロックの側面図である。図４（ａ）（ｂ）に示すように、当該付勢機構連結ブロック２１３ｊは、底部２１３ｋと２つの側板部２１３ｍを有し、略Ｕ字状に形成されており、当該２つの側板部２１３ｍはそれぞれ前記２つの縦方向支持棒２１３ｃの前記横方向支持棒２１３ａに近い位置に固定されている。当該付勢機構連結ブロック２１３ｇの側板部２１３ｍには、それぞれ側板部２１３ｍを貫通するガイド溝２１３ｎが設けられている。当該２つのガイド溝２１３ｎの前記横方向支持棒２１３ａに遠い先端にはロック溝２１３ｐが設けられている。 Further, between the two vertical support rods 213c, an urging mechanism connecting block 213j for connecting the base end 24a of the gas cylinder 24 is provided. 4A and 4B are explanatory views of an urging mechanism connecting block as a member of the seating and standing assist chair of the present invention, FIG. 4A is a front view of the urging mechanism connecting block, and FIG. 4B is attached. It is a side view of the force mechanism connecting block. As shown in FIGS. 4A and 4B, the urging mechanism connecting block 213j has a bottom portion 213k and two side plate portions 213m, and is formed in a substantially U shape, and the two side plate portions 213m. Are fixed at positions close to the lateral support rods 213a of the two vertical support rods 213c, respectively. The side plate portion 213m of the urging mechanism connecting block 213g is provided with a guide groove 213n that penetrates the side plate portion 213m, respectively. A lock groove 213p is provided at the tip far from the lateral support rod 213a of the two guide grooves 213n.

図５は本考案の着座起立補助椅子の一部材としての座面部材の斜視図である。前記座面部材２２は、図１及び図５に示すように、先端部２２１と座面部２２２を有し、その先端部２２１がその座面部２２２に対しやや折り曲げられているように板状に形成されている。前記座面部材２２の先端部２２１には、前記椅子フレーム２１１と連結するためのボルトを通す第１連結孔２２１ａが４つ設けられている。前記座面部材２２の座面部２２２には、前記ガスシリンダー２４と連結するためのボルトを通す第２連結孔２２２ａが２つ設けられている。一方、前記座面部材２２は、それぞれ２つの前記座面連結ブロック２１３ｅに回動可能に軸支されている２つの前記連結部材２３を介して前記椅子フレーム２１１と連結されている。前記座面部材２２は、前記第１連結孔２２１ａに対応する前記２つの通孔２３１ａを通すボルトにて前記椅子フレーム２１１の先端に対して回動可能に前記椅子フレーム２１１に連結されている。また、前記座面部材２２は、前記ガスシリンダー２４の先端としてのロード端２４ｂに回動可能に軸支されている付勢機構連結部材２２３を介して前記ガスシリンダー２４と連結されている。図６は本考案の着座起立補助椅子の一部材としての付勢機構連結部材の説明図であり、図６（ａ）は付勢機構連結部材の平面図であり、図６（ｂ）は図６（ａ）におけるＣ－Ｃ線の断面図である。図６（ａ）（ｂ）に示すように、前記付勢機構連結部材２２３は底板部２２３ａと当該底板部２２３ａに垂直する２つの側板部２２３ｂを有し、その底板部２２３ａには２つの取り付け孔２２３ｃが設けられ、その２つの側板部２２３ｂにはそれぞれ２つの軸支孔２２３ｄが設けられている。具体的には、前記座面部材２２の座面部２２２には前記第２連結孔２２２ａに対応する２つの取り付け孔２２３ｃを通すボルトにて前記付勢機構連結部材２２３が取り付けられ、そして、前記２つの軸支孔２２３ｄのうち１つの軸支孔２２３ｄを通す軸部材Ｐにて前記ガスシリンダー２４のロード端２４ｂに対して回動可能に前記ガスシリンダー２４と連結されている。なお、実際の使用時に、前記座面部材２２は、その外面がクッション部材により覆われるように構成されている。 FIG. 5 is a perspective view of a seat surface member as a member of the seating and standing assist chair of the present invention. As shown in FIGS. 1 and 5, the seat surface member 22 has a tip portion 221 and a seat surface portion 222, and the tip portion 221 is formed in a plate shape so as to be slightly bent with respect to the seat surface portion 222. Has been done. The tip portion 221 of the seat surface member 22 is provided with four first connecting holes 221a through which bolts for connecting to the chair frame 211 are passed. The seating surface portion 222 of the seating surface member 22 is provided with two second connecting holes 222a through which bolts for connecting to the gas cylinder 24 are passed. On the other hand, the seat surface member 22 is connected to the chair frame 211 via two connecting members 23 rotatably supported by the two seat surface connecting blocks 213e. The seat surface member 22 is rotatably connected to the chair frame 211 with respect to the tip of the chair frame 211 by a bolt passing through the two through holes 231a corresponding to the first connecting hole 221a. Further, the seat surface member 22 is connected to the gas cylinder 24 via a urging mechanism connecting member 223 rotatably supported by the load end 24b as the tip of the gas cylinder 24. 6A and 6B are explanatory views of an urging mechanism connecting member as one member of the seating and standing assist chair of the present invention, FIG. 6A is a plan view of the urging mechanism connecting member, and FIG. 6B is a diagram. 6 (a) is a cross-sectional view taken along the line CC. As shown in FIGS. 6A and 6B, the urging mechanism connecting member 223 has a bottom plate portion 223a and two side plate portions 223b perpendicular to the bottom plate portion 223a, and two attachments to the bottom plate portion 223a. A hole 223c is provided, and two shaft support holes 223d are provided in each of the two side plate portions 223b. Specifically, the urging mechanism connecting member 223 is attached to the seating surface portion 222 of the seating surface member 22 with a bolt through which two mounting holes 223c corresponding to the second connecting hole 222a are passed, and the second connecting member 22 is attached. A shaft member P passing through one of the shaft support holes 223d is rotatably connected to the gas cylinder 24 with respect to the load end 24b of the gas cylinder 24. At the time of actual use, the seat surface member 22 is configured so that its outer surface is covered with a cushion member.

また、前記背凭れ部３は、図１に示すように、それぞれ略Ｕ字状にパイプを屈曲形成した背凭れ部主体部３１と背凭れ部補強部材３２を備えている。前記背凭れ部補強部材３２は熔接などで前記背凭れ部主体部３１に固定連結されている。また、前記背凭れ部主体部３１は前記座枠２に対する前記背凭れ部３の角度を調節するための調節器３３を介して前記座枠部材２１の垂直フレーム部２１１ｂに連結されている。なお、実際の使用時に、前記背凭れ部３は、その外面がクッション部材により覆われるように構成されている。 Further, as shown in FIG. 1, the backrest portion 3 includes a backrest portion main portion 31 in which a pipe is bent and formed in a substantially U shape, and a backrest portion reinforcing member 32, respectively. The backrest portion reinforcing member 32 is fixedly connected to the backrest portion main portion 31 by welding or the like. Further, the backrest portion main portion 31 is connected to the vertical frame portion 211b of the seat frame member 21 via an adjuster 33 for adjusting the angle of the backrest portion 3 with respect to the seat frame 2. In actual use, the backrest portion 3 is configured so that its outer surface is covered with a cushion member.

また、前記ガスシリンダー２４は、その基端２４ａが前記２つのガイド溝２１３ｎに対して摺動可能に当該２つのガイド溝２１３ｎの間に軸支されている。具体的には、前記ガスシリンダー２４の基端２４ａに固定連結されているピン部材２４ｃが２つの側板部２１３ｍにおけるガイド溝２１３ｎを跨って当該２つのガイド溝２１３ｎ内に摺動可能に設けられている。また、当該ピン部材２４ｃはガイド溝２１３ｎ内に摺動する際、当該ガイド溝２１３ｎの前記ロック溝２１３ｐ内へ摺動して当該ロック溝２１３ｐ内に嵌め込む場合がある。また、前記ピン部材２４ｃは前記ロック溝２１３ｐ内に嵌め込んだ場合、当該ロック溝２１３ｐ内から脱出しなければ、前記ガイド溝２１３ｎ内に摺動することができないようにされている。つまり、前記ピン部材２４ｃは前記ロック溝２１３ｐ内に嵌め込んだ際、前記ピン部材２４ｃはロックされている。 Further, the gas cylinder 24 is pivotally supported between the two guide grooves 213n so that its base end 24a is slidable with respect to the two guide grooves 213n. Specifically, the pin member 24c fixedly connected to the base end 24a of the gas cylinder 24 is slidably provided in the two guide grooves 213n across the guide grooves 213n in the two side plate portions 213m. There is. Further, when the pin member 24c slides in the guide groove 213n, the pin member 24c may slide into the lock groove 213p of the guide groove 213n and fit into the lock groove 213p. Further, when the pin member 24c is fitted in the lock groove 213p, it cannot slide in the guide groove 213n unless it escapes from the lock groove 213p. That is, when the pin member 24c is fitted into the lock groove 213p, the pin member 24c is locked.

さらに、本実施形態の椅子１には、図７（ａ）（ｂ）に示すように、一端が前記ピン部材２４ｃに固定され、他端が前記座面部材２２に固定されている切替部材としての帯部材２５を備えている。当該帯部材２５は椅子１を使用状態から収納状態に切り替えるために利用されるものである。 Further, as shown in FIGS. 7A and 7B, the chair 1 of the present embodiment has one end fixed to the pin member 24c and the other end fixed to the seat surface member 22 as a switching member. The band member 25 is provided. The band member 25 is used to switch the chair 1 from the used state to the stored state.

次には、本実施形態の椅子１の使用状態構成と収納状態構成及びその使用時と収納時の動作を説明する。
図８及び図９は本実施形態の椅子１の使用状態を示している。本実施形態の椅子１の使用状態とは、前記座面部材２２は、図８におけるＷ位置（つまり図９（ａ）に示す状態）からＺ位置（つまり図９（ｃ）に示す状態）までの間に矢印Ｍを沿って回動する状態（図９（ｂ）に示す中間状態を含む）を指す。この使用状態においては、前記ピン部材２４ｃは前記ロック溝２１３ｐ内に摺動され嵌め込んでいる。そして、前記座面部材２２は、Ｗ位置にある使用状態では、図８及び図９（ａ）に示すように、その先端部２２１が床面（つまり、前記水平フレーム部２１１ａが位置する面）とほぼ垂直し、且つその座面部２２２が床面（つまり、前記水平フレーム部２１１ａが位置する面）と所定角度α（本実施形態ではα＝３９°）をなすよう前記ガスシリンダー２４のロード端２４ｂにより付勢されている。そして、使用者が前記座面部材２２に着座する際、前記座面部材２２は当該ガスシリンダー２４の押圧力（付勢力）を抗しながら、その先端部２２１における前記軸ピン２３２を支点としてその座面部２２２が前記椅子フレーム２１１へ近づくよう回動（図８において矢印Ｍを沿って時計回り方向に回動）され、やがて前記座面部２２２が前記突起２１３ｄに当接すると、着座補助が完了するようになる。その際、その座面部２２２が床面（つまり、前記水平フレーム部２１１ａが位置する面）と所定角度β（本実施形態ではβ＝５°）をなし、そして、前記座面部２２２が着座開始から着座完了までの回動角度γが４４°（つまり、α＋β＝４４°）となる。また、着座完了時においても、前記座面部材２２は当該ガスシリンダー２４の押圧力（付勢力）により付勢され続ける状態に維持されている。着座動作は図９（ａ）に示す状態から図９（ｂ）に示す状態を経由して図９（ｃ）に示す状態までの動作となる。 Next, the use state configuration and the storage state configuration of the chair 1 of the present embodiment, and the operation during use and storage thereof will be described.
8 and 9 show the usage state of the chair 1 of the present embodiment. The usage state of the chair 1 of the present embodiment is that the seat surface member 22 is from the W position in FIG. 8 (that is, the state shown in FIG. 9A) to the Z position (that is, the state shown in FIG. 9C). Refers to a state of rotating along the arrow M between the two (including the intermediate state shown in FIG. 9B). In this used state, the pin member 24c is slid and fitted in the lock groove 213p. Then, in the used state where the seat surface member 22 is in the W position, as shown in FIGS. 8 and 9 (a), the tip portion 221 thereof is a floor surface (that is, the surface on which the horizontal frame portion 211a is located). The load end of the gas cylinder 24 so that the seating surface portion 222 is substantially perpendicular to the floor surface (that is, the surface on which the horizontal frame portion 211a is located) and a predetermined angle α (α = 39 ° in the present embodiment). It is urged by 24b. Then, when the user sits on the seat surface member 22, the seat surface member 22 resists the pressing force (urging force) of the gas cylinder 24, and the shaft pin 232 at the tip end portion 221 is used as a fulcrum. The seating surface portion 222 is rotated so as to approach the chair frame 211 (rotated in the clockwise direction along the arrow M in FIG. 8), and when the seating surface portion 222 abuts on the protrusion 213d, the seating assistance is completed. It will be like. At that time, the seating surface portion 222 forms a predetermined angle β (β = 5 ° in the present embodiment) with the floor surface (that is, the surface on which the horizontal frame portion 211a is located), and the seating surface portion 222 starts seating. The rotation angle γ until the seating is completed is 44 ° (that is, α + β = 44 °). Further, even when the seating is completed, the seating surface member 22 is maintained in a state of being continuously urged by the pressing force (urging force) of the gas cylinder 24. The sitting motion is from the state shown in FIG. 9 (a) to the state shown in FIG. 9 (c) via the state shown in FIG. 9 (b).

一方、着座完了状態から使用者が起立する際、着座力をすこしだけで弱くする（例えば、両手がひじ掛け（図示せず）に押さえて起立しようとする力を使う）と、前記座面部材２２は当該ガスシリンダー２４の押圧力（付勢力）によって押圧（付勢）されながら、その先端部２２１における前記軸ピン２３２を支点としてその座面部２２２が前記椅子フレーム２１１から遠ざかるよう回動（図８においては矢印Ｍを沿って反時計回り方向に回動）され、やがて前記座面部２２２が着座補助前の状態（つまり、その座面部２２２が前記水平フレーム部２１１ａが位置する面と所定角度α（本実施形態ではα＝３９°）をなす状態）に戻ると、起立補助が完了するようになる。起立動作は図９（ｃ）に示す状態から図９（ｂ）に示す状態を経由して図９（ａ）に示す状態までの動作となる。 On the other hand, when the user stands up from the seating completed state, if the seating force is weakened only a little (for example, the force that both hands press on the armrests (not shown) to stand up is used), the seating surface member 22 Is pressed (urged) by the pushing pressure (urging force) of the gas cylinder 24, and rotates so that the seating surface portion 222 moves away from the chair frame 211 with the shaft pin 232 at the tip portion 221 as a fulcrum (FIG. 8). In the counterclockwise direction along the arrow M), the seat surface portion 222 is in a state before seating assistance (that is, the seat surface portion 222 is at a predetermined angle α (that is, the surface on which the horizontal frame portion 211a is located). In the present embodiment, when the state (α = 39 °) is restored, the standing assist is completed. The standing operation is an operation from the state shown in FIG. 9 (c) to the state shown in FIG. 9 (a) via the state shown in FIG. 9 (b).

図１０は本実施形態の椅子１の収納状態を示している。図１０に示すように、本実施形態の椅子１の収納状態においては、前記ピン部材２４ｃは前記ガイド溝２１３ｎに位置し、前記座面部２２２が前記突起２１３ｄに当接するようになる。当該状態においては、前記ガスシリンダー２４のロード端２４ｂが十分に伸びた状態にあり、つまり、前記ガスシリンダー２４のロード端２４ｂが前記座面部材２２に対する押圧力（付勢力）の反作用力による押圧状態から解放されている。この状態では、通常の椅子として利用できるとともに、この状態から、前記背凭れ部３の背凭れ部主体部３１は前記調節器３３を介してその背凭れ部主体部３１が前記座面部材２２に当接するよう折り畳まれて収納すれば、椅子１の収納ベースを小さくすることができ、運搬も容易となる。 FIG. 10 shows a stored state of the chair 1 of the present embodiment. As shown in FIG. 10, in the retracted state of the chair 1 of the present embodiment, the pin member 24c is located in the guide groove 213n, and the seat surface portion 222 comes into contact with the protrusion 213d. In this state, the load end 24b of the gas cylinder 24 is in a sufficiently extended state, that is, the load end 24b of the gas cylinder 24 is pressed by the reaction force of the pressing force (urging force) against the seat surface member 22. You are free from the state. In this state, it can be used as a normal chair, and from this state, the backrest portion main portion 31 of the backrest portion 3 becomes the seat surface member 22 via the adjuster 33. If the chair 1 is folded and stored so as to be in contact with each other, the storage base of the chair 1 can be made smaller, and the chair 1 can be easily transported.

本実施形態では、本発明の椅子１を収納状態（または使用状態）から使用状態（または収納状態）へ切り替えるのは、前記ガスシリンダー２４の基端２４ａに設けられている帯部材２５によって行われている。具体的には、本発明の椅子１を収納状態から使用状態へ切り替える際、前記ピン部材２４ｃが前記ロック溝２１３ｐ内に嵌め込む（つまり、図８に示す状態）までに前記ピン部材２４ｃを前記ガイド溝２１３ｎ内に摺動させながら使用者が前記帯部材２５を引っ張るようにする。つまり、前記帯部材２５を引っ張ることによって、前記ピン部材２４ｃは図７（ａ）に示すガイド溝２１３ｎにある状態から当該ガイド溝２１３ｎを沿って図７（ｂ）に示す矢印Ｌの左方向へ摺動され、図７（ｂ）に示すようにロック溝２１３ｐに嵌め込まれる状態に切り替えられる。一方、本発明の椅子１を使用状態から収納状態へ切り替える際、前記ピン部材２４ｃを前記ロック溝２１３ｐから脱出させて前記ガイド溝２１３ｎ内に摺動させながら使用者が前記帯部材２５を引っ張るようにする。つまり、前記帯部材２５を引っ張ることによって、前記ピン部材２４ｃは図７（ｂ）に示すロック溝２１３ｐにある状態から脱出されてからガイド溝２１３ｎを沿って図７（ｂ）に示す矢印Ｌの右方向へ摺動され、図７（ａ）に示すようにガイド溝２１３ｎにある状態に切り替えられる。 In the present embodiment, the chair 1 of the present invention is switched from the stored state (or used state) to the used state (or stored state) by the band member 25 provided at the base end 24a of the gas cylinder 24. ing. Specifically, when the chair 1 of the present invention is switched from the stored state to the used state, the pin member 24c is fitted into the lock groove 213p (that is, the state shown in FIG. 8). The user pulls the band member 25 while sliding it in the guide groove 213n. That is, by pulling the band member 25, the pin member 24c is in the guide groove 213n shown in FIG. 7 (a) to the left of the arrow L shown in FIG. 7 (b) along the guide groove 213n. It is slid and switched to a state of being fitted into the lock groove 213p as shown in FIG. 7 (b). On the other hand, when the chair 1 of the present invention is switched from the used state to the stored state, the user pulls the band member 25 while the pin member 24c escapes from the lock groove 213p and slides into the guide groove 213n. To. That is, by pulling the band member 25, the pin member 24c escapes from the state in the lock groove 213p shown in FIG. 7 (b), and then follows the guide groove 213n along the arrow L shown in FIG. 7 (b). It is slid to the right and can be switched to the state in the guide groove 213n as shown in FIG. 7 (a).

本実施形態の椅子１によれば、着座の際は付勢機構としてのガスシリンダー２４の付勢力で跳ね上がっている座面部材２２に利用者がゆっくり腰を下ろすと、座面部材２２がガスシリンダー２４の付勢力を抗しながらスーッと下がり通常の着座姿勢になる。一方、起立の際は肘掛や杖などを持ってゆっくり腰を上げると座面部材２２がガスシリンダー２４の付勢力で跳ね上がり、立ち上がり動作を優しくアシストすることができる。 According to the chair 1 of the present embodiment, when the user slowly sits down on the seat surface member 22 that is jumping up by the urging force of the gas cylinder 24 as an urging mechanism when seated, the seat surface member 22 becomes a gas cylinder. While resisting the urging force of 24, it goes down smoothly and becomes a normal sitting posture. On the other hand, when standing up, if the hips are slowly raised by holding an accoudoir or a cane, the seat member 22 jumps up with the urging force of the gas cylinder 24, and the standing up operation can be gently assisted.

また、座面部材２２に対するガスシリンダー２４の付勢力が解除されることによって椅子１が折り畳んで容易に収納されることができる。
本実施形態では、前記座面部材２２は前記付勢機構連結部材２２３に設けられた前記２つの軸支孔２２３ｄのうちのもう１つの軸支孔２２３ｄを通す軸部材Ｐにて前記ガスシリンダー２４のロード端２４ｂに対して回動可能に前記ガスシリンダー２４と連結されてもよい。軸部材Ｐが選択的に２つの軸支孔２２３ｄを通すことで、前記座面部材２２と前記ガスシリンダー２４のロード端２４ｂとの連結位置をずらすことができ、異なる座面傾斜（または座面高さ）を調整することができる。 Further, the chair 1 can be easily folded and stored by releasing the urging force of the gas cylinder 24 with respect to the seat surface member 22.
In the present embodiment, the seat surface member 22 is a shaft member P through which another shaft support hole 223d of the two shaft support holes 223d provided in the urging mechanism connecting member 223 is passed through the gas cylinder 24. May be rotatably connected to the gas cylinder 24 with respect to the load end 24b of the. By selectively passing the two shaft support holes 223d through the shaft member P, the connection position between the seat member 22 and the load end 24b of the gas cylinder 24 can be shifted, and different seat surface inclinations (or seat surfaces) can be obtained. Height) can be adjusted.

また、本実施形態では、前記座枠部材２１に対する前記座面部材２２の回動方向を時計回り方向とした際、前記ガスシリンダー２４の基端２４ａに対する前記ガスシリンダー２４の回動方向が反時計回り方向になるように構成されている。これによって前記座面部材２２の回動方向と前記ガスシリンダー２４の回動方向が逆であるため、利用者が着座する際、前記座面部材２２は急に倒れることがなく、確実に前記ガスシリンダー２４により支えられることができる。 Further, in the present embodiment, when the rotation direction of the seat surface member 22 with respect to the seat frame member 21 is a clockwise direction, the rotation direction of the gas cylinder 24 with respect to the base end 24a of the gas cylinder 24 is counterclockwise. It is configured to be in the clockwise direction. As a result, the rotation direction of the seat surface member 22 and the rotation direction of the gas cylinder 24 are opposite to each other. Therefore, when the user sits down, the seat surface member 22 does not suddenly fall down, and the gas is reliably generated. It can be supported by the cylinder 24.

１ 椅子
２ 座枠
３ 背凭れ部
２１ 座枠部材
２２ 座面部材
２３ 連結部材
２４ ガスシリンダー
２１３ｊ 付勢機構連結ブロック
２１３ｎ ガイド溝
２１３ｐ ロック溝
２２３ｄ 軸支孔
２４ｃ ピン部材
２５ 帯部材
Ｐ 軸部材 1 Chair 2 Seat frame 3 Backrest 21 Seat frame member 22 Seat surface member 23 Connecting member 24 Gas cylinder 213j Bounce mechanism Connecting block 213n Guide groove 213p Lock groove 223d Shaft support hole 24c Pin member 25 Band member P Shaft member

Claims (5)

少なくとも座枠を有する着座起立補助椅子において、
前記座枠は、座枠部材と、座面部材と、当該座面部材が前記座枠部材に対して回動可能に前記座枠部材と前記座面部材を連結させる連結部材と、前記座面部材の前記座枠部材に対する回動を緩衝したり補助したりする付勢機構とを備え、
前記付勢機構はその基端が前記座枠部材に設けられている付勢機構連結ブロックに摺動可能に連結され、その先端が前記座面部材に回動可能に連結され、
前記付勢機構連結ブロックは、前記付勢機構の基端が摺動するためのガイド溝と、前記付勢機構の基端の摺動をロックするロック溝とを備え、
着座起立補助椅子の使用状態において、前記付勢機構の基端は摺動不能に前記ロック溝によりロックされ、前記座面部材に対する前記付勢機構の付勢力によって前記座面部材に着座している利用者の起立を補助するようにされ、前記座面部材に対する前記付勢機構の付勢力を抗しながら前記座面部材に着座しようとする利用者の着座を補助するようにされ、
着座起立補助椅子の収納状態において、前記付勢機構の基端は前記ロック溝から脱出させ、前記ガイド溝に沿って摺動させることによって、前記座面部材に対する前記付勢機構の付勢力が解除されるようにされていることを特徴とする着座起立補助椅子。 At least in a sitting and standing auxiliary chair with a seat frame
The seat frame includes a seat frame member, a seat surface member, a connecting member that connects the seat frame member and the seat surface member so that the seat surface member can rotate with respect to the seat frame member, and the seat surface. It is provided with an urging mechanism that cushions or assists the rotation of the member with respect to the seat frame member.
The urging mechanism has its base end slidably connected to the urging mechanism connecting block provided on the seat frame member, and its tip is rotatably connected to the seat surface member.
The urging mechanism connecting block includes a guide groove for sliding the base end of the urging mechanism and a lock groove for locking the sliding of the base end of the urging mechanism.
In the state of using the seating and standing assist chair, the base end of the urging mechanism is non-slidingly locked by the lock groove, and is seated on the seating surface member by the urging force of the urging mechanism against the seating surface member. It is designed to assist the user to stand up, and to assist the user who tries to sit on the seat surface member while resisting the urging force of the urging mechanism against the seat surface member.
In the retracted state of the seating and standing assist chair, the base end of the urging mechanism is escaped from the lock groove and slid along the guide groove, whereby the urging force of the urging mechanism on the seat surface member is released. A seating and standing assist chair that is characterized by being designed to be used. 前記付勢機構の先端は、付勢機構連結部材を介して前記座面部材に回動可能に連結され、前記付勢機構連結部材には複数の軸支孔が設けられ、前記付勢機構の先端は、前記複数の軸支孔の１つの軸支孔に軸支されている軸部材を介して前記座面部材に回動可能に連結されていることを特徴とする請求項１に記載の着座起立補助椅子。 The tip of the urging mechanism is rotatably connected to the seating surface member via the urging mechanism connecting member, and the urging mechanism connecting member is provided with a plurality of shaft support holes to provide the urging mechanism. The first aspect of the present invention, wherein the tip is rotatably connected to the seat surface member via a shaft member pivotally supported by one shaft support hole of the plurality of shaft support holes. Seating and standing auxiliary chair. 前記付勢機構の基端には、当該基端を前記ロック溝から脱出させて前記ガイド溝に摺動させる切替部材が設けられていることを特徴とする請求項１又は２に記載の着座起立補助椅子。 The seating / standing position according to claim 1 or 2, wherein the base end of the urging mechanism is provided with a switching member that allows the base end to escape from the lock groove and slide into the guide groove. Auxiliary chair. 前記付勢機構の基端には、前記ロック溝に沿って摺動し、または前記ロック溝に嵌め込むピン部材が設けられ、前記切替部材は当該ピン部材と連結されていることを特徴とする請求項１～３のいずれか１項に記載の着座起立補助椅子。 The base end of the urging mechanism is provided with a pin member that slides along the lock groove or is fitted into the lock groove, and the switching member is connected to the pin member. The seating and standing assist chair according to any one of claims 1 to 3. 前記座枠部材に対する前記座面部材の回動方向を時計回り方向とした際、前記付勢機構の基端に対する前記付勢機構の回動方向が反時計回り方向になるように構成されていることを特徴とする請求項１～４のいずれか１項に記載の着座起立補助椅子。 When the rotation direction of the seat surface member with respect to the seat frame member is a clockwise direction, the rotation direction of the urging mechanism with respect to the base end of the urging mechanism is configured to be a counterclockwise direction. The seating and standing assist chair according to any one of claims 1 to 4, wherein the chair is characterized by the above.

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