WO2006073019A1

WO2006073019A1 - Chair

Info

Publication number: WO2006073019A1
Application number: PCT/JP2005/018999
Authority: WO
Inventors: Yasuyuki Hasegawa
Original assignee: Train Corporation
Priority date: 2005-01-07
Filing date: 2005-10-17
Publication date: 2006-07-13
Also published as: JP2007295940A; JP3733369B1

Abstract

A chair enabling a seat occupant to sit thereon in good posture by improving the way of sitting on the chair of the seat occupant to improve the awareness of the body of the seat occupant by the seat occupant so that the seat occupant can bring two points of a hip part on both sides of right and left ischial bones in contact with a seat surface to stabilize a pelvis in the state of vertically standing to the seat surface. The chair is characterized by comprising a tilt means having a seat part divided at least into right and left parts for the seat occupant and capable of tilting the seat part at least to the rear outer sides relative to the horizontal seat surface of the seat part and a fixing means fixing the seat part at a specified tilt position.

Description

明細書 Specification

椅子 Chair

技術分野 Technical field

[0001] 本発明は、家庭、学校その他の教育施設、職場等において使用する椅子に関し、特に、着座者の身体意識を高め、左右の座骨を中心とした臀部の二点を座面に接触させて、骨盤を座面に対して垂直方向に立たせるような状態で、自然に着座者の背骨が伸び、姿勢よく座ることが可能となる椅子に関する。 [0001] The present invention relates to a chair used in homes, schools, other educational facilities, workplaces, etc., and in particular, raises the body consciousness of the seated person and touches the seat surface with two points of the hips centered on the left and right seat bones. Thus, the present invention relates to a chair that allows a seated person's spine to naturally stretch and sit in a good posture with the pelvis standing in a vertical direction with respect to the seating surface.

背景技術 Background art

[0002] 椅子は、家庭、学校等の教育施設、職場等において、日常的に長時間使用されるものであり、着座者の用途に合せて様々な形状や機能を備えた椅子が提供されている。 [0002] Chairs are used daily for a long time in educational facilities such as homes and schools, workplaces, etc., and chairs with various shapes and functions are provided according to the use of the seated person. The

例えば、特許文献 1には、着座者の臀部や大腿部が座面で圧迫されることによって鬱血等を生じないように、着座者の動きに合せて揺動可能となる一対の可動着座部を設けた椅子が開示されている。また、特許文献 2には、左右に設けた肘当で区画された空間内部に、肘当の下方力空間内方に向けて突出した中割れ座面を設け、中割れ座面のそれぞれを前後方向と左右方向に傾斜できるようにした介護用椅子が開示されている。 For example, Patent Document 1 discloses a pair of movable seating parts that can swing in accordance with the movement of the seated person so that congestion or the like does not occur when the buttocks and thighs of the seated person are pressed by the seating surface. A chair provided with is disclosed. Patent Document 2 also provides a split seat surface that protrudes toward the inside of the space below the armrests in the space partitioned by the left and right armrests. A care chair that can be tilted in the front-rear direction and the left-right direction is disclosed.

特許文献 1 :特開平 11 151129号公報 Patent Document 1: JP 11 151129 A

特許文献 2：特表 2001— 517514号公報 Patent Document 2: Special Table 2001-517514

発明の開示 Disclosure of the invention

発明が解決しょうとする課題 Problems to be solved by the invention

[0003] しカゝしながら、特許文献 1に開示されて!ヽるような椅子は、着座者の快適性を追求したものである。また、特許文献 2に開示されているような椅子は、着座者の快適性とともに、介護者の利便性を追求したものである。このように、特許文献 1及び 2に開示されている椅子は、着座者の骨格、筋肉等を考慮して、着座者の姿勢の向上を目的として設計されたものではなカゝつた。例えば、特許文献 2に開示されている介護用椅子にあっては、左右に設けた肘当で区画された空間内部に中割れ座面を設けているため、左右の肘当で制限されて、着座者が膝を中割れ座面の外方に向けて開脚することができず、着座者が背骨を真っ直ぐにして座りにく!ヽ設計となって!/、る。 [0003] However, the chair disclosed in Patent Document 1 pursues comfort for the seated person. The chair as disclosed in Patent Document 2 pursues the convenience of the caregiver as well as the comfort of the seated person. Thus, the chairs disclosed in Patent Documents 1 and 2 are not designed for the purpose of improving the posture of the seated person in consideration of the skeleton, muscles, etc. of the seated person. . For example, in the care chair disclosed in Patent Document 2, the seat surface is provided with a split inside the space defined by the left and right armrests. Therefore, it is restricted by the left and right elbow pads, so that the seated person cannot open his legs with the knees facing away from the cracked seating surface, and the seated person cannot sit with the spine straight! Get ready!

ところで、生活様式等の違いから、例えば、日本人と欧米人では、骨格や、筋肉等の使い方が異なるため、椅子に着座したときの姿勢が異なる傾向がある。例えば、欧米人は、一般的に、左右の座骨を中心とした臀部の二点を座面に接触させ、骨盤を座面に対して垂直方向に立たせるような状態で、椅子に座る傾向がある。このため、着座者の骨盤が安定した状態となり、着座者は、背骨が真っ直ぐに伸びた状態で、姿勢よく椅子に座ることができる。一方、例えば、日本人は、一般的に、尾てい骨を中心として、臀部を広い面積で座面に接触させるような状態で、椅子に座る傾向がある。このため、着座者の骨盤が不安定な状態となり、着座者は、背骨が丸く曲がった前屈みの状態で、姿勢悪く椅子に座りやすい。 By the way, because of differences in lifestyles, for example, Japanese and Westerners tend to have different postures when sitting on a chair because their skeletons and muscles are used differently. For example, Europeans and Americans generally tend to sit on a chair with two points on the buttocks centering on the left and right seat bones in contact with the seat surface and with the pelvis standing vertically to the seat surface. There is. Therefore, the seated person's pelvis is in a stable state, and the seated person can sit on the chair in a good posture with the spine straightly extended. On the other hand, for example, Japanese people generally tend to sit on a chair with the caudal bone at the center and the buttocks in contact with the seating surface over a large area. For this reason, the pelvis of the seated person becomes unstable, and the seated person is likely to sit in a chair with a poor posture in a state where the spine is bent in a rounded shape.

[0004] そこで、本発明は、着座者の椅子の座り方に着目し、着座者の身体意識を高め、着座者が、左右の座骨を中心とした臀部の二点を座面に接触させて、骨盤を座面に対して垂直方向に立たせるような状態で、骨盤を安定させ、姿勢よく座ることが可能となる椅子を提供することを目的とする。 [0004] Therefore, the present invention pays attention to how the seated person sits and raises the body consciousness of the seated person, so that the seated person touches the seat surface with two points of the buttocks centered on the left and right seat bones. Thus, it is an object of the present invention to provide a chair that can stabilize the pelvis and sit in a good posture in a state in which the pelvis stands vertically with respect to the seating surface.

課題を解決するための手段 Means for solving the problem

[0005] 本発明者等は、着座者が、着座者の左右の臀部を、左右の着座部のそれぞれに分けて椅子に座ろうとする身体意識を高めることによって、着座者が、左右の座骨を中心とした臀部の二点を座面に接触させて座るようになり、着座者の姿勢がよくなることを知見した。 [0005] The inventors of the present invention improve the body consciousness that the seated person divides the right and left buttocks of the seated person into the left and right seated parts and sits on the chair so that the seated person can move the left and right scapulae. It has been found that the seating position of the seat is improved because the two points on the buttocks at the center come into contact with the seating surface.

第 1の本発明の椅子は、着座者に対して少なくとも左右に分かれている着座部を備え、前記着座部の水平座面に対して、前記着座部を左右に分けている部分を中心として、正面力見てこの中心部分が凸状の山形形状となるように外傾に傾斜させる傾斜手段と、前記着座部を所望の傾斜位置で固定する固定手段とを設け、前記着座者の膝を前記着座部の外方に向けて開脚可能となるように、膝力大腿部を支える前記着座部の前側部を、大腿部力臀部を支える前記着座部の後側部に対して小さくしたことを特徴とする。 The chair according to the first aspect of the present invention has a seating portion that is divided into at least left and right with respect to a seated person, and a portion that divides the seating portion into left and right with respect to a horizontal seating surface of the seating portion. Then, there is provided tilting means for tilting outward so that the center portion becomes a convex chevron when viewed from the front, and fixing means for fixing the seating portion at a desired tilting position. The knee force supports the thigh so that the legs can be opened toward the outside of the seat, and the front side of the seat is on the rear side of the seat that supports the thigh force heel It is characterized by being made smaller.

第 2の本発明は、第 1の発明において、前記着座部の傾斜角度が、前記着座部の水平座面に対して前傾 5度力後傾 5度であり、外傾 5度から内傾 5度であることを特徴とする。 According to a second aspect of the present invention, in the first aspect, the inclination angle of the seating portion It is characterized by a forward tilt of 5 degrees and a backward tilt of 5 degrees with respect to the horizontal seating surface, with an outward tilt of 5 degrees and an inward tilt of 5 degrees.

第 3の本発明は、第 1の発明において、前記椅子に背凭れ部を設け、前記背凭れ部を上下に移動させる上下移動手段を設けたことを特徴とする。 According to a third aspect of the present invention, in the first aspect of the invention, a backrest portion is provided on the chair, and vertical movement means for moving the backrest portion up and down is provided.

第 4の本発明は、第 1の発明において、一端側に前記背凭れ部を有し他端側が台座に固定される背凭れ用脚部を設け、前記背凭れ用脚部の一部を一対の前記着座部の間に配置することを特徴とする。 According to a fourth aspect of the present invention, in the first aspect of the present invention, a backrest leg portion having the backrest portion at one end side and having the other end side fixed to the base is provided, and a part of the backrest leg portion is provided. It arrange | positions between a pair of said seating parts, It is characterized by the above-mentioned.

第 5の本発明は、第 1の発明において、台座を複数の台座用脚部によって構成し、複数の前記台座用脚部が放射状に配置され、複数の前記台座用脚部の集結位置で背凭れ用脚部が固定され、一対の前記着座部を支持する一対の脚部がそれぞれ異なる前記台座用脚部に立設されていることを特徴とする。 According to a fifth aspect of the present invention, in the first aspect, the pedestal is configured by a plurality of pedestal legs, the plurality of pedestal legs are arranged radially, and the back is located at a gathering position of the plurality of pedestal legs. A pair of leg portions for supporting the pair of seating portions are erected on different pedestal leg portions, respectively.

発明の効果 The invention's effect

本発明の椅子は、着座者が、着座者に対して少なくとも左右に分かれた着座部を認識することによって、一方の着座部に左の臀部を載せ、他方の着座部に右の臀部を載せて着座しょうとする着座者の身体意識が高まる。着座者が、着座者の座骨を左右に分かれた着座部に対応させて、左右の座骨を中心とした臀部の二点を座面に接触させ、骨盤を座面に対して垂直方向に立たたせるような状態で座るようになる。このため、着座者の背骨が自然と伸び、姿勢よく椅子に座ることができる。 In the chair of the present invention, when the seated person recognizes the seated part separated at least on the left and right with respect to the seated person, the left buttocks is placed on one seated part, and the right buttocks is placed on the other seated part. The body consciousness of the seated person trying to sit up is increased. The seated person makes the seated bone of the seated person correspond to the seated part divided into the left and right sides, the two points of the buttocks centering on the left and right seated bones are brought into contact with the seating surface, and the pelvis stands vertically with respect to the seating surface. Sit in such a state. For this reason, a seated person's spine extends naturally and it can sit on a chair with a good posture.

また、着座者が左右に分かれた着座部を認識しただけでは、着座者の背骨が伸びるように、姿勢よく椅子に座ることができない場合がある。このため、本発明の椅子には、着座部の水平座面に対して、着座部を少なくとも後傾かつ外傾に傾斜可能とする傾斜手段と、着座部を所望の傾斜位置で固定する固定手段を設けている。着座部を後傾かつ外傾に傾斜させ、この傾斜位置で固定した場合、着座者が、一方の着座部と他方の着座部に跨るように、自然に膝を着座部の外方に向けて開脚させて座るようになり、左右の座骨を中心とした臀部の二点を、分かれた着座部のそれぞれの座面に接触させて座るようになる。このため、着座者が、骨盤を座面に対して垂直方向に立たたせるような状態で、骨盤を安定させて座るようになり、自然に背骨を真っ直ぐに伸ばした状態で、姿勢よく椅子に座ることができるようになる。また、本発明の椅子において、膝力も大腿部の部分を支持する着座部の前側部を、大腿部力も臀部を支持する着座部の後側部に対して小さくした場合は、着座者が着座者の膝を着座部の外方に向けて開脚しやすくなる。このため、着座者が無理なく楽に、左右の座骨を中心とした臀部の二点を座面に接触させて、座ることができるようになる。 In addition, if the seated person only recognizes the seating part that is divided into left and right, it may not be possible to sit on the chair in a good posture so that the backbone of the seated person can be extended. For this reason, the chair of the present invention has a tilting means for allowing the seating portion to tilt at least backward and outward with respect to the horizontal seating surface of the seating portion, and a fixing for fixing the seating portion at a desired tilting position. Means are provided. When the seating part is tilted backward and outward and fixed at this tilted position, the seated person naturally faces the outside of the seating part so as to straddle one seating part and the other seating part. Sit with the legs open and sit with the two points of the buttocks centered on the left and right seat bones in contact with the seating surfaces of the separate seats. For this reason, a seated person can sit in a stable posture with the pelvis standing in a vertical direction with respect to the seating surface, and sits in a chair with a good posture with the spine straightened naturally. Will be able to. Further, in the chair of the present invention, if the knee force is smaller than the front side portion of the seating portion that supports the thigh portion and the thigh force is smaller than the rear side portion of the seating portion that supports the buttocks, It becomes easier to open the leg with the knee of the seated person facing outward. This makes it possible for the seated person to sit comfortably and comfortably by bringing the two points of the buttocks centering on the left and right seat bones into contact with the seating surface.

また、本発明の椅子に、背凭れ部を設け、背凭れ部を上下に移動させる上下移動手段を設けた場合は、着座者の背骨を、着座者のへその位置に合せて背凭れ部で支えることができ、着座者が、無理なく楽に、背骨を伸ばした姿勢を維持しやすくなる図面の簡単な説明 In addition, when the chair of the present invention is provided with a backrest part and an up-and-down moving means for moving the backrest part up and down, the seater's spine is placed on the backrest part according to the position of the seated person's navel. It can be supported, and it makes it easier for the seated person to maintain a posture in which the spine is stretched easily and comfortably.

[0007] [図 1]本発明の椅子の正面図 [0007] [Fig. 1] Front view of the chair of the present invention.

[図 2]本発明の椅子の平面図 [Fig. 2] Plan view of the chair of the present invention

[図 3]本発明の椅子の側面図 [Fig. 3] Side view of the chair of the present invention

[図 4]本発明の椅子の着座部を後傾かつ外傾に傾斜させた状態を示す側面図 FIG. 4 is a side view showing a state where the seating portion of the chair of the present invention is tilted backward and outward.

[図 5]本発明の椅子の着座部を後傾かつ外傾に傾斜させた状態を示す正面図 FIG. 5 is a front view showing a state in which the seating portion of the chair of the present invention is inclined backward and outward.

[図 6]図 4又は図 5に示す椅子に着座者が着座した状態を示す説明図 FIG. 6 is an explanatory diagram showing a state in which a seated person is seated on the chair shown in FIG. 4 or FIG.

[図 7] (a)通常の椅子に着座した後 10分後の着座者の姿勢を、三次元計測装置を用いて測定した図、（b)本発明の椅子に着座した後 10分後の着座者の姿勢を、三次元計測装置を用いて測定した図 [Fig. 7] (a) The figure of the seated person's posture 10 minutes after sitting on a normal chair, using a three-dimensional measuring device, (b) 10 minutes after sitting on the chair of the present invention. A figure of a seated person's posture measured using a three-dimensional measuring device

[図 8]本発明の椅子に着座した着座者の筋放電の値と、通常の椅子に着座した着座者の筋放電の値を示す図 FIG. 8 is a diagram showing the value of muscle discharge of a seated person sitting on a chair of the present invention and the value of muscle discharge of a seated person sitting on a normal chair.

[図 9]本発明の椅子に着座した着座者の心拍変動の値と、通常の椅子に着座した着座者の心拍変動の値を示す図 FIG. 9 is a diagram showing the value of heart rate variability of a seated person sitting on a chair of the present invention and the value of heart rate variability of a seated person sitting on a normal chair.

符号の説明 Explanation of symbols

[0008] 1 椅子 [0008] 1 chair

2 傾斜用部材 2 Inclination member

3a, 3b 着座部 3a, 3b Seat

4a, 4b 脚部 5a, 5b, 5c, 5d, 5e 台座用脚部 4a, 4b legs 5a, 5b, 5c, 5d, 5e pedestal legs

6 背凭れ用脚部 6 Backrest legs

7 背凭れ部 7 Backrest

21 支持部 21 Support section

22 受部 22 Receiver

23 傾斜用固定部材 23 Inclination fixing member

31a, 31b 着座部の前側部 31a, 31b Front side of seat

32a, 32b 着座部の後側部 32a, 32b Rear side of seat

41a, 41b フレーム 41a, 41b frame

42a, 42b 支柱部 42a, 42b Prop section

43a, 43b ボールジョイント 43a, 43b Ball joint

44a, 44b 脚用固定部材 44a, 44b Leg fixing member

45 支持部 45 Support

51a, 51b, 51c, 51d, 51e キャスタ 51a, 51b, 51c, 51d, 51e casters

61 フレーム 61 frames

62 支柱 62 prop

63 背凭れ用固定部材 63 Backrest fixing member

発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION

本発明の椅子の一実施の形態を図面に基づき説明する。図 1は、本発明の椅子 1 の一実施の形態を示す正面図、図 2は、図 1の椅子の平面図、図 3は、図 1の椅子の側面図である。本発明の椅子 1は、図 1から図 3に示すように、着座者に対して左右に二分割された着座部 3a, 3bを備えている。 One embodiment of a chair of the present invention is described based on a drawing. FIG. 1 is a front view showing an embodiment of a chair 1 of the present invention, FIG. 2 is a plan view of the chair of FIG. 1, and FIG. 3 is a side view of the chair of FIG. As shown in FIGS. 1 to 3, the chair 1 of the present invention includes seating portions 3 a and 3 b that are divided into left and right parts for a seated person.

左右に二分割された一対の着座部 3a, 3bは、台座 5に設置された一対の脚部 4a, 4bで支持されている。左右の脚部 4a, 4bの間には、支持部 45が設けられている。脚部 4a, 4bは、フレーム 41a, 41bと、フレーム 41a, 4 lbに嵌合されて上下に移動可能となる支柱部 42a, 42bとから構成されている。支柱部部 42a, 42bの先端部にはボールジョイント 43a, 43bを設けている。また、フレーム 41a, 41bには、脚用固定部材 44a, 44bを設けている。脚用固定部材 44a, 44bを緩めて、支柱部 42a, 42b を上下に移動させ、所望の位置で支柱部 42a, 42bを脚用固定部材 44a, 44bで締め付けて固定させる。尚、椅子の脚部を上下に移動させる手段として、油圧シリンダ一やガスシリンダー等を用いてもよ!、。 The pair of seating portions 3a, 3b divided into left and right is supported by a pair of leg portions 4a, 4b installed on the base 5. A support 45 is provided between the left and right legs 4a, 4b. The leg portions 4a and 4b are composed of frames 41a and 41b and support columns 42a and 42b that are fitted to the frames 41a and 4 lb and can move up and down. Ball joints 43a and 43b are provided at the front ends of the column portions 42a and 42b. Also, it is fixed to the legs on the frames 41a and 41b. Members 44a and 44b are provided. The leg fixing members 44a and 44b are loosened, the column parts 42a and 42b are moved up and down, and the column parts 42a and 42b are fastened and fixed by the leg fixing members 44a and 44b at a desired position. As a means to move the chair legs up and down, you can use a hydraulic cylinder or a gas cylinder!

[0010] 着座部 3a, 3bの裏面には、傾斜用部材 2を設けている。傾斜用部材 2は、着座部 3 a, 3bを支持する二本の棒状部材カもなる支持部 22と、この支持部 22の中央部分に設けたボールジョイント 43a, 43bを嵌合させる受部 21とからなっている。 [0010] Inclining members 2 are provided on the back surfaces of the seating portions 3a, 3b. The tilting member 2 includes a support portion 22 that also serves as two rod-shaped members that support the seat portions 3a and 3b, and a receiving portion 21 that fits the ball joints 43a and 43b provided at the central portion of the support portion 22. It is made up of.

支柱部 42a, 42bの先端に設けられたボールジョイント 43a, 43bを、着座部 3a, 3b の裏面に設けられた傾斜用部材 2の受部 21に嵌合し、脚部 4a, 4bと着座部 3a, 3b を接続する。 The ball joints 43a and 43b provided at the tips of the support portions 42a and 42b are fitted into the receiving portions 21 of the member 2 for inclination provided on the back surface of the seating portions 3a and 3b, and the leg portions 4a and 4b and the seating portions are fitted. Connect 3a and 3b.

受部 21には、着座部 3a, 3bを所望の傾斜位置で固定させる傾斜用固定部材 23を設けている。例えば、ボールジョイントを締め付けるネジ状の傾斜用固定部材 23を用いて、傾斜用固定部材 23を緩めることにより、受部 21に嵌合させたボールジョイント 4 3a, 43bに沿って着座部 3a, 3bを傾斜させる。そして、着座部 3a, 3bを前側、後側、外側、内側に傾斜させ、所望の傾斜位置で傾斜用固定部材 23を締め付けて、着座部 3a, 3bを固定させることができる。尚、傾斜手段としては、板パネ等の他の傾斜手段を用いて、着座部 3a, 3bを少なくとも、後傾かつ外傾に傾斜可能となるようしてもよい。 The receiving part 21 is provided with an inclination fixing member 23 for fixing the seating parts 3a, 3b at desired inclination positions. For example, by using the screw-shaped tilting fixing member 23 for tightening the ball joint and loosening the tilting fixing member 23, the seating portions 3a, 3b are fitted along the ball joints 4 3a, 43b fitted to the receiving portions 21. Tilt. Then, the seat portions 3a and 3b can be fixed by inclining the seat portions 3a and 3b to the front side, the rear side, the outside and the inside, and tightening the tilt fixing member 23 at a desired tilt position. As the tilting means, other tilting means such as a panel panel may be used so that the seat portions 3a and 3b can tilt at least backward and outward.

尚、着座部の前側とは、着座者が着座部に座った場合に、着座者の膝カゝら下腿部を支える部分をいい、着座部の後側とは、着座者の下腿部力臀部を支持する部分をいう。また、着座部の内側とは、着座者に対して左右に分けられた着座部の中心部分をいい、着座部の外側とは、椅子の外方部分をいう。 The front side of the seating part refers to the part that supports the lower leg of the seated person's knees when the seated person sits on the seating part, and the rear side of the seating part refers to the lower leg part of the seated person The part that supports the forceps. Further, the inside of the seating portion refers to the central portion of the seating portion that is divided into left and right with respect to the seated person, and the outside of the seating portion refers to the outer portion of the chair.

[0011] 図 2の平面図に示すように、着座部 3a, 3bは、着座者が、着座者の膝を着座部 3a , 3bの外方に向けて開脚しやすように、着座者の膝から大腿部を支える着座部 3a, 3bの前側部 3 la, 3 lbを、着座者の大腿部力も臀部を支える着座部 3a, 3bの後側部 32a, 32bに対して小さくしている。尚、本実施の形態において、着座部 3a, 3bの前側部 31a, 31bとは、着座部 3a, 3bのボールジョイント 43a, 43b位置で左右に仮想の横線を引いた場合に、仮想横線よりも前側の部分をいう。また、着座部 3a, 3bの後側部 32a, 32bとは、仮想横線よりも後側の部分をいう。そして、前側部 31a, 31b の面積を、後側部 32a, 32bの面積よりも小さくなるようにする。 [0011] As shown in the plan view of FIG. 2, the seating portions 3a and 3b are arranged so that the seated person can easily open their legs with the knees of the seated person facing outward from the seating portions 3a and 3b. The front side 3 la, 3 lb of the seat 3a, 3b that supports the thigh from the knee is made smaller than the rear side 32a, 32b of the seat 3a, 3b that also supports the hip of the seated person. Yes. In the present embodiment, the front side portions 31a and 31b of the seating portions 3a and 3b are defined by virtual horizontal lines when a virtual horizontal line is drawn to the left and right at the ball joints 43a and 43b positions of the seating portions 3a and 3b. Also refers to the front part. Also, the seats 3a and 3b The rear side portions 32a and 32b are portions on the rear side of the virtual horizontal line. The areas of the front side portions 31a and 31b are made smaller than the areas of the rear side portions 32a and 32b.

[0012] 台座 5は、 4本の台座用脚部 5a, 5b, 5d, 5eを平面 X字状に一点で集結させ、平面 X字状の交差点から 1本の台座用脚部 5cを着座部 3aの後端部よりも後側に突出させるように設けている。着座者に対して後側の台座用脚部 5b, 5c, 5dは、着座者に対して前側の台座用脚部 5a, 5eよりも、長さが長くなつている。また、着座部 3a, 3b を支える脚部 4a, 4bは、台座用脚部 5a, 5b, 5c, 5d, 5eの交差点よりも後側に左右に開いた台座用脚部 5b, 5dに立設されている。すなわち、 5本の台座用脚部 5a, 5b , 5c, 5d, 5eは、放射状に配置されている。そして、 5本の台座用脚部 5a, 5b, 5c, 5d, 5eの集結位置には、背凭れ用脚部 6が固定されている。また、背凭れ用脚部 6 は、下端力も背凭れ部 7までの一部が一対の着座部 3a, 3bの間に位置するように配置されている。 [0012] The pedestal 5 has four pedestal legs 5a, 5b, 5d, and 5e assembled in a plane X shape at one point, and a single pedestal leg 5c is seated from the plane X shape intersection. It is provided so as to protrude rearward from the rear end of the portion 3a. The rear pedestal legs 5b, 5c, 5d with respect to the seated person are longer in length than the front pedestal legs 5a, 5e with respect to the seated person. The legs 4a and 4b that support the seats 3a and 3b are erected on the pedestal legs 5b and 5d that open to the left and right behind the intersection of the pedestal legs 5a, 5b, 5c, 5d, and 5e. Has been. That is, the five pedestal legs 5a, 5b, 5c, 5d, 5e are arranged radially. The backrest legs 6 are fixed at the gathering positions of the five pedestal legs 5a, 5b, 5c, 5d, 5e. Further, the backrest leg portion 6 is arranged such that a part of the lower end force up to the backrest portion 7 is located between the pair of seating portions 3a and 3b.

着座者の体重力着座部 3a, 3bの後側部 32a, 32bにかけられた場合であっても、後側の台座用脚部 5b, 5c, 5dの長さが、前側の台座用脚部 5a, 5eよりも長くなるように構成されているため、着座者を安全に支えることができる。台座 5を構成する台座用脚部 5a, 5b, 5c, 5d, 5eの先端部には、椅子 1を移動させやすくするために、それぞれキャスタ 51a, 51b, 51c, 51d, 51eが設けられている。尚、台座用脚部には、キャスタを設けなくてもよい。 The body gravity of the seated person Even if the seat is placed on the rear side 32a, 32b of the seat 3a, 3b, the length of the rear base leg 5b, 5c, 5d is the length of the front base leg 5a. , 5e is longer than 5e, so it can support the seated person safely. Casters 51a, 51b, 51c, 51d, 51e are provided at the tip of the pedestal legs 5a, 5b, 5c, 5d, 5e constituting the pedestal 5, respectively, in order to make the chair 1 easier to move. It has been. The pedestal legs need not have casters.

[0013] 台座 5の台座用脚部 5a, 5b, 5c, 5d, 5eの交差点からは、上方斜めに突出する背凭れ用脚部 6を設け、この背凭れ用脚部 6の先端部には、バー状の背凭れ部 7を設けている。 [0013] From the intersection of the pedestal legs 5a, 5b, 5c, 5d, 5e of the pedestal 5, there is provided a backrest leg 6 projecting obliquely upward, and at the tip of the backrest leg 6 A bar-shaped backrest 7 is provided.

背凭れ用脚部 6は、フレーム 61と、フレーム 61に嵌合されて上下に移動可能となる支柱部 62とから構成されている。また、フレーム 61には、上下移動させた支柱部 62 を所望位置で固定する背凭れ用固定部材 63を設けている。このように、背凭れ部 7 が上下に移動可能であると、着座者の背骨を、着座者のへその位置に合せて背凭れ部 7で支えることができ、着座者が、無理なく楽に、背骨を伸ばした姿勢を維持しやすくなる。 The backrest leg section 6 includes a frame 61 and a support section 62 that is fitted to the frame 61 and can move up and down. Further, the frame 61 is provided with a backrest fixing member 63 for fixing the strut 62 moved up and down at a desired position. In this way, if the backrest part 7 is movable up and down, the seater's spine can be supported by the backrest part 7 in accordance with the position of the seated person's navel, and the seated person can comfortably and comfortably. This makes it easier to maintain a posture in which the spine is stretched.

尚、油圧シリンダーやガスシリンダー等を背凭れ用脚部 6に用いて背凭れ部 7を上下に移動可能としてもよい。 Use a hydraulic cylinder, gas cylinder, etc. for the backrest 6 and move the back 7 up and down. It may be movable.

[0014] 着座者は、椅子 1の着座部 3a, 3bが左右に二分割されていることを認識することによって、一方の着座部に左の臀部を載せ、他方の着座部に右の臀部を載せて着座しようとする身体意識が高まる。このため、着座者は、左右に分かれた着座部に対応させて、左右の座骨を中心とした臀部の二点を、二分割された着座部 3a, 3bのそれぞれの座面に接触させて座るようになる。このため、着座者は、骨盤を座面に対して垂直方向に立たたせるような状態で座るようになり、着座者の背骨が自然と伸び、姿勢よく椅子に座ることができる。 [0014] The seated person recognizes that the seating portions 3a and 3b of the chair 1 are divided into left and right parts, so that the left buttocks is placed on one seating portion and the right buttocks on the other seating portion. Increased body consciousness trying to sit on. For this reason, the seated person makes contact with the seating surfaces of the seats 3a and 3b, which are divided into two parts, corresponding to the seating part divided into the left and right, and the two points of the buttocks centered on the left and right seat bones. Let me sit down. Therefore, the seated person can sit in a state where the pelvis stands in a vertical direction with respect to the seating surface, and the seated person's spine can naturally stretch and sit in a chair with good posture.

尚、本実施の形態においては、着座者が、着座部が左右に分かれていることを、確実に認識できるように、左右に二分割されている着座部 3a, 3bを示した力着座部を左右に分けるには、着座部を他の形態としてもよい。例えば、着座者が、着座部が左右に分かれていることを視覚的に認識できるように、着座部の中央に、前側から後側にわたつて一本の線を引くことにより、着座部を着座者に対して左右に分けてもよい。また、例えば、着座者に対して左右の着座部の色を変えることにより、着座部を左右に分けてもよい。更には、着座時に、着座者がそれぞれの着座部 3a, 3bを感覚として認識できるように、例えば、左右に分かれた 2つの凸面を座面上に形成し、左右に分かれた着座部としてもょヽ。 In the present embodiment, the force seating portion showing the seating portions 3a and 3b that are divided into right and left is provided so that the seated person can surely recognize that the seating portion is divided into left and right. In order to divide into right and left, a seating part is good also as another form. For example, by drawing a single line from the front side to the rear side in the center of the seating part so that the seated person can visually recognize that the seating part is divided into left and right, The seated person may be divided into left and right. Further, for example, the seating portions may be divided into left and right by changing the colors of the left and right seating portions for the seated person. Furthermore, for example, two convex surfaces that are divided into left and right sides are formed on the seating surface so that the seated person can recognize each of the sitting portions 3a and 3b as a sensation when sitting.ヽヽ.

[0015] 図 4は、着座部 3a, 3bを後傾かつ外傾に傾斜させた状態を示す椅子 1の側面図である。また、図 5は、着座部 3a, 3bを後傾かつ外傾に傾斜させた状態を示す椅子 1の正面図である。図 5に示すように、着座部 3a, 3bを後傾かつ外傾に傾斜させると、正面から見た場合に、着座部 3a, 3bは、左右に分けている部分を中心として、この中心部分が凸状の山形形状となって、る。 [0015] FIG. 4 is a side view of the chair 1 showing a state in which the seating portions 3a and 3b are inclined backward and outward. FIG. 5 is a front view of the chair 1 showing a state in which the seating portions 3a and 3b are inclined backward and outward. As shown in FIG. 5, when the seating portions 3a and 3b are tilted backward and outward, the seating portions 3a and 3b are centered on the left and right portions when viewed from the front. The central part has a convex chevron shape.

着座者が、椅子 1の着座部 3a, 3bが二分割されていることを認識するだけでは、着座者の姿勢がよくならない場合は、着座部 3a, 3bを、着座部 3a, 3bの水平座面に対して、後傾かつ外傾に傾斜させる。着座者は、後傾かつ外傾に傾斜している着座部に座りやすいように、一方の着座部 3aと他方の着座部 3bに跨って、自然に膝を着座部 3a, 3bの外方に向けて両足を左右に開脚して座るようになる（図 6参照)。このため、一方の着座部 3aの座面力着座者の右の座骨を中心とした右臀部に接触し、他方の着座部 3bの座面力着座者の左の座骨を中心とした左臀部に接触するようになる。このように、着座者が、左右の座骨を中心とした左右の臀部の二点を着座部 3a, 3b の座面に接触させて座るようになる。このため、着座者が、骨盤を座面に対して垂直方向に立たせるような状態で、骨盤を安定させて座るようになり、自然に背骨を真つ直ぐに伸ばした状態で、姿勢よく椅子に座ることができる。 If the seated person does not get better just by recognizing that the seating parts 3a, 3b of the chair 1 are divided into two parts, the seating part 3a, 3b is placed horizontally on the seating part 3a, 3b. Tilt backward and outward with respect to the seating surface. In order to make it easier for a seated person to sit on a seat that is inclined backward and outward, the seater naturally straddles one seat 3a and the other seat 3b so that the knee is naturally outside the seats 3a and 3b. Sit down with your legs open to the left and right (see Figure 6). For this reason, the seating surface force of one seating portion 3a comes into contact with the starboard portion centered on the right seat bone of the seated person, and the other The seating surface force of the seating part 3b comes into contact with the left buttock centered on the left seat bone of the seated person. In this way, the seated person sits with the two points of the left and right buttocks centering on the left and right isch bones contacting the seating surfaces of the seating parts 3a and 3b. For this reason, a seated person can sit in a stable position with the pelvis standing in a vertical direction with respect to the seating surface, with the spine stretched straight and naturally into a chair with good posture. I can sit down.

[0016] また、着座部 3a, 3bの前側部 31a, 31bを、着座部 3a, 3bの後側部 32a, 32bよりも小さくすると、着座者が、膝を外方に向けて開脚して座りやすくなる。このため、左右の座骨を中心とした左右の臀部の二点を着座部 3a, 3bの座面に接触させやすくなり、着座者が骨盤を安定させて、姿勢よく座ることができるよう〖こなる。 [0016] When the front side portions 31a, 31b of the seating portions 3a, 3b are made smaller than the rear side portions 32a, 32b of the seating portions 3a, 3b, the seated person opens their legs with their knees facing outward. It makes it easier to sit down. For this reason, it becomes easier to bring the two points of the left and right hips centered on the left and right seat bones into contact with the seating surfaces of the seating parts 3a and 3b, so that the seated person can stabilize the pelvis and sit in a good posture. Become.

着座部の傾斜角度力着座部の水平座面に対して前傾 5度力後傾 5度であり、外傾 5度から内傾 5度とした場合は、着座者の体型に合わせて、着座部 3a, 3bの座面を、着座者の座骨中心とした左右の臀部に接触させるように調整できるため、好ましい。 Inclination angle force of the seating part When the horizontal inclination of the seating part is 5 degrees forward and 5 degrees backward, and when the inclination is 5 degrees from 5 degrees to 5 degrees, the seating is performed according to the body shape of the seated person. This is preferable because the seating surfaces of the parts 3a and 3b can be adjusted so as to be in contact with the left and right buttocks centered on the seat bone of the seated person.

[0017] 次に、本発明の椅子に着座者が着座した場合について説明する。 Next, a case where a seated person is seated on the chair of the present invention will be described.

図 7 (a)は、着座部が一つである通常の椅子に着座者が着座した場合に、着座して力も 10分後の着座者の姿勢を、三次元計測装置を使用して計測した結果である。また、図 7 (b)は、本発明の椅子に着座者が着座した場合に、着座してから 10分後の着座者の姿勢を、三次元計測装置を使用して計測した結果である。 Fig. 7 (a) shows a case where a seated person sits on a normal chair with one seating part and the posture of the seated person after 10 minutes of sitting is measured using a three-dimensional measuring device. It is a result. Fig. 7 (b) shows the result of measuring the posture of the seated person 10 minutes after sitting using the three-dimensional measuring device when the seated person is seated on the chair of the present invention. .

図 7 (a)に示すように、着座部が一つである通常の椅子に、着座者が着座した場合は、着座者の背骨が丸く曲がった前屈みの状態で着座していることが確認できた。これに対し、図 7 (b)に示すように、着座部が左右に分かれた本発明の椅子に、着座者が着座した場合は、着座者の背骨が真っ直ぐに伸びた、姿勢のよい状態で着座して、ることが確認できた。 As shown in Fig. 7 (a), when a seated person sits on a normal chair with a single seating section, it can be confirmed that the seated person is seated in a forward bent state with the spine of the seat being round and bent. It was. On the other hand, as shown in Fig. 7 (b), when a seated person sits on the chair of the present invention in which the seating part is divided into left and right, the seated person's spine is straight and the posture is good. I was able to confirm that I sat down.

[0018] 次に、本発明の椅子に着座者が着座した場合の筋肉の状態を、着座者の筋放電の数値を測定することによって確認した。 [0018] Next, the state of the muscle when the seated person was seated on the chair of the present invention was confirmed by measuring the numerical value of the muscle discharge of the seated person.

図 8において、 A線は、着座部が左右に分かれた本発明の椅子に着座した着座時、 15分後、 30分後の着座者の筋放電の数値を示している。また、 B線は、着座部が一つである通常の椅子に着座した着座時、 15分後、 30分後の着座者の筋放電の数値を示している。尚、筋放電の数値が高い程、筋肉が緊張している状態を示す。In FIG. 8, line A shows the value of muscle discharge of the seated person 15 minutes and 30 minutes after sitting on the chair of the present invention in which the seating part is divided into left and right. Line B shows the number of muscle discharges of the seated person 15 minutes and 30 minutes after sitting in a normal chair with a single seat. The value is shown. In addition, the state where the muscle is tense is shown, so that the numerical value of the muscle discharge is high.

A線に示すように、着座部が左右に分かれた本発明の椅子に、着座者が着座した場合は、着座時から、通常の椅子に着座した場合と比較して、着座者の筋放電の値が低ぐ着座してから 30分経過した後にも、着座者の筋放電の値が低い状態が持続されている。 A線で示す結果から、本発明の椅子に着座した着座者は、着座部が一つの通常の椅子と比較して、筋肉が緊張しておらず、筋肉に負担をかけることなぐリラックスした状態で着座していることが確認できた。 As shown in line A, when a seated person sits on the chair of the present invention with the seating part divided into left and right, compared to the case of sitting on a normal chair from the time of sitting, the muscle discharge of the seated person is reduced. Even after 30 minutes have passed since sitting at a low value, the muscle discharge value of the seated person remained low. From the results shown in line A, the seated person sitting on the chair of the present invention is in a relaxed state in which the muscles are not strained and the muscles are not strained compared to a normal chair with a single seating section. I was able to confirm that I was seated.

これに対し、 B線に示すように、着座部が一つである通常の椅子に、着座者が着座した場合は、着座時から、筋放電の値が高ぐ筋肉が緊張している状態となっているまた、本発明の椅子に着座者が座った場合に、着座者の心拍数を測定し、着座者がどのような状態となって!/ヽるかを確認した。 On the other hand, as shown in line B, when a seated person sits on a normal chair with a single seating part, the muscles with high muscle discharge values are in tension from the time of sitting. In addition, when a seated person sits on the chair of the present invention, the heart rate of the seated person was measured to confirm the state of the seated person!

図 9において、 A線は、着座部が左右に分かれた本発明の椅子に着座した着座時、 15分後、 30分後の着座者の心拍数の変化を示す心拍変動 (HFZLF)の数値を示している。また、 B線は、着座部が一つである通常の椅子に着座した着座時、 15分後、 30分後の着座者の心拍数の変化を示す心拍変動 (HFZLF)の数値を示して、る。尚、心拍変動の数値が高い程、精神的なストレスが少なぐ精神的に安定な状態を示す。 In Fig. 9, line A shows the value of heart rate variability (HFZLF) that shows the change in the heart rate of the seated person 15 minutes and 30 minutes after sitting on the chair of the present invention where the seating part is divided into left and right. Show. In addition, the B line shows the value of heart rate variability (HFZLF) indicating the change of the heart rate of the seated person after 15 minutes, 30 minutes after sitting in a normal chair with one seating part, The A higher heart rate variability indicates a mentally stable state with less mental stress.

A線に示すように、着座部が左右に分かれた本発明の椅子に、着座者が着座した場合は、着座時から、通常の椅子に着座した場合と比較して、心拍変動の数値が高ぐ着座者に精神的なストレスが力かっていない状態となることが確認できた。更に、本発明の椅子に着座して 30分後には、着座者の心拍変動の数値がかなり高くなり、本発明の椅子に長く着座しているほど、着座者のストレスが少なくなり、着座者が精神的に安定した状態となることが確認できた。 As shown in line A, when a seated person sits on the chair of the present invention with the seating part divided into left and right, the heart rate variability is higher than when sitting on a normal chair from the time of sitting. It was confirmed that mental stress was not applied to the seated person. Furthermore, 30 minutes after sitting on the chair of the present invention, the value of the heart rate variability of the seated person becomes considerably high. The longer the person sits on the chair of the present invention, the less the stress on the seated person, It was confirmed that the condition became spiritually stable.

これに対し、 B線に示すように、着座部が一つである通常の椅子に、着座者が着座した場合は、着座時から、心拍変動の数値が低ぐ本発明の椅子に着座した場合と比較して、精神的にストレスがかかり、精神的に安定していないことが確認できた。以上のように、本発明の椅子は、着座者が精神的に安定し、リラックスした状態で着座することができることが確認できた。 On the other hand, as shown in line B, when a seated person sits on a normal chair with a single seating part, it sits on the chair of the present invention with a low heart rate variability from the time of sitting. It was confirmed that it was mentally stressed and not mentally stable. As described above, the chair of the present invention can be worn while the occupant is mentally stable and relaxed. I was able to confirm that I could sit down.

産業上の利用可能性 Industrial applicability

本発明の椅子は、家庭、学校等の教育施設又は職場で用いる椅子として適している。 The chair of the present invention is suitable as a chair used in educational facilities such as home and school or in the workplace.

Claims

請求の範囲 The scope of the claims

[1] 着座者に対して少なくとも左右に分かれている着座部を備え、前記着座部の水平座面に対して、前記着座部を左右に分けている部分を中心として、正面力見てこの中心部分が凸状の山形形状となるように外傾に傾斜させる傾斜手段と、前記着座部を所望の傾斜位置で固定する固定手段を設け、前記着座者の膝を前記着座部の外方に向けて開脚可能となるように、膝から大腿部を支える前記着座部の前側部を、大腿部力臀部を支える前記着座部の後側部に対して小さくしたことを特徴とする椅子 [1] A seating portion that is divided into at least left and right with respect to a seated person is provided, and the center of the seating portion with respect to the horizontal seating surface is determined by looking at the frontal force centered on a portion that divides the seating portion into left and right. Inclination means for inclining outward so that the portion has a convex chevron shape and fixing means for fixing the seating portion at a desired inclination position are provided, and the knee of the seated person is directed outward of the seating portion. The front side portion of the seating portion that supports the thigh from the knee is made smaller than the rear side portion of the seating portion that supports the thigh force buttocks so that the leg can be opened.

[2] 前記着座部の傾斜角度が、前記着座部の水平座面に対して前傾 5度から後傾 5度であり、外傾 5度から内傾 5度であることを特徴とする請求項 1に記載の椅子。 [2] The inclination angle of the seating part is 5 degrees forward to 5 degrees backward and 5 degrees outward to 5 degrees inward with respect to the horizontal seating surface of the seating part. Item 1. The chair according to item 1.

[3] 背凭れ部を設け、前記背凭れ部を上下に移動させる上下移動手段を設けたことを特徴とする請求項 1に記載の椅子。 [3] The chair according to claim 1, wherein a backrest portion is provided, and a vertically moving means for moving the backrest portion up and down is provided.

[4] 一端側に前記背凭れ部を有して他端側が台座に固定される背凭れ用脚部を設け[4] A backrest leg portion having the backrest portion on one end side and fixed to the pedestal on the other end side is provided.

、前記背凭れ用脚部の一部を一対の前記着座部の間に配置することを特徴とする請求項 1に記載の椅子。 The chair according to claim 1, wherein a part of the backrest leg portion is disposed between the pair of seating portions.

[5] 台座を複数の台座用脚部によって構成し、複数の前記台座用脚部が放射状に配置され、複数の前記台座用脚部の集結位置で背凭れ用脚部が固定され、一対の前記着座部を支持する一対の脚部がそれぞれ異なる前記台座用脚部に立設されていることを特徴とする請求項 1に記載の椅子。 [5] The pedestal is composed of a plurality of pedestal legs, the plurality of pedestal legs are arranged radially, and the backrest legs are fixed at the gathering position of the plurality of pedestal legs. 2. The chair according to claim 1, wherein a pair of legs that support the seating part are erected on different pedestal legs.