JP3176305U - Chair - Google Patents

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JP3176305U
JP3176305U JP2012001919U JP2012001919U JP3176305U JP 3176305 U JP3176305 U JP 3176305U JP 2012001919 U JP2012001919 U JP 2012001919U JP 2012001919 U JP2012001919 U JP 2012001919U JP 3176305 U JP3176305 U JP 3176305U
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seating
chair
right thigh
contact portions
buttocks
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一彦 高崎
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有限会社祭り屋木材
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Abstract

【課題】身体を正しい姿勢に保ちやすいように、また、立ち上がるのに容易な機動性を持たせるように、座面体を水平または水平に近い前傾斜若しくは後傾斜であるときにおいて、または背もたれに寄り掛かる姿勢において、尻が前滑りしないよう保持されるために、腰痛が生じるおそれがなくなる椅子を提供する。
【解決手段】座面体が脚で支持される木製の椅子であって、その木製の座面体に、腰掛け箇所が体形的に一体に落ち込む尻当り部と左右大腿当り部とからなる浅い湾曲面の着座凹部を、該両当り部にわたって同一若しくはほゞ同一の深さにおいて設けることにより、左右大腿当り部の間の股当たりに、尻当り部と左右大腿当り部の深さから徐々に立ち上がる***部を形成し、着座凹部の全面若しくはほゞ全面に、さざ波が前後に進行する凹凸模様に多数の横長溝を溝切り加工により列設してあることを特徴とする。
【選択図】 図1
[PROBLEMS] To keep a body in a correct posture and to have mobility that makes it easy to stand up, when a seating body is in a horizontal or horizontal front-tilt or rear-tilt, or leaning against a backrest. Provided is a chair that eliminates the possibility of low back pain because the buttocks are held so as not to slip forward in a hanging position.
SOLUTION: A wooden chair in which a seating surface body is supported by legs, and a shallow curved surface composed of a buttocks portion and a left and right thigh resting portion in which a seating portion falls in a body shape integrally with the wooden seating surface body. By providing a seating recess at the same or substantially the same depth across the both contact portions, a raised portion that gradually rises from the depth of the hip contact portion and the left and right thigh contact portion at the crotch between the left and right thigh contact portions And a large number of horizontally long grooves are arranged in a concavo-convex pattern in which ripples travel forward and backward on the entire surface of the seating concave portion or substantially the entire surface.
[Selection] Figure 1

Description

この考案は、休息や食事、仕事などの時に腰掛けて使用する椅子に関する。   The present invention relates to a chair that can be used for sitting, resting, eating, or working.

椅子は、ヨーロッパや中国では古い伝統的な家具であるが、日本では近代になってようやく生活に取り入れられたものである。主に身体を休めるためや、食事、仕事、勉強等の行動をしやすく身体を保持するために使用されるが、いずれの場合も、身体に痛みや疲労が生じないよう過度な負担のないこと、目的とする動作や静止状態が得られやすいこと等について、人間工学的に形状や構造が追求される。このような本格的な研究は、椅子の長い歴史の上では最近のことであり、しかも、未だによく分からない点が多々存在するのが現状である。   The chair is an old traditional piece of furniture in Europe and China, but it was only modern in Japan and was incorporated into life. It is mainly used to rest the body and to hold the body easily to eat, work, study, etc. In either case, there should be no excessive burden so that the body does not cause pain or fatigue. The shape and structure are pursued ergonomically for the purpose of easily obtaining the desired motion and stationary state. Such full-scale research is recent in the long history of chairs, and there are still many points that are still unknown.

椅子の構造については、一般的には、腰掛ける座面体とその後ろの背もたれと、4本の脚と、肘掛けとからなり、そのうち、座面体と背もたれとの角度が特に人間工学的に重要である。そして、座面体は、多くの場合、水平に限りなく近い程度にやゝ後ろ傾斜であり、背もたれは、後ろ傾斜が圧倒的に多い。   As for the structure of a chair, it generally consists of a sitting surface, a backrest behind it, four legs, and an armrest, of which the angle between the seating surface and the backrest is particularly ergonomic. . In many cases, the seat surface body is inclined to the extent that it is almost as horizontal as possible, and the backrest is overwhelmingly inclined to the back.

座面体がやゝ前傾斜若しくは水平であると、背筋を伸ばしやすく、比較的疲れにくい立った時の正しい姿勢に近い状態を保ちやすいとされる。また、座面体が後ろ傾斜の場合に比較して瞬間的に立つ動作を起こしやすい。したがって、機動性が要求される事務椅子としては望ましいと言える。しかし、座面体が水平または前傾斜であると、例えば背もたれに寄りかかってときには、尻(臀部)が前滑りしやすいので、前に滑り落ちないよう無意識にそれに抵抗する力が身体に持続的に働き、これが腰椎や腰の筋肉に負担をかけることになって腰痛を起こしやすい。前記したように、これがやゝ後ろ傾斜の座面体が多く採用されるゆえんである。   It is said that if the seat surface is slightly leaning forward or horizontal, it is easy to stretch the back muscles, and it is easy to maintain a state close to the correct posture when standing, which is relatively difficult to get tired. In addition, an operation of standing momentarily is more likely to occur than when the seating body is inclined backward. Therefore, it can be said that it is desirable as an office chair that requires mobility. However, if the seat surface is horizontal or leaning forward, for example, when leaning against the backrest, the buttocks (buttocks) are easy to slide forward, so the body's ability to resist it unconsciously to prevent it from slipping forward is sustained. Working, this puts strain on the lumbar spine and muscles of the lumbar and is likely to cause back pain. As described above, this is the reason why a large number of back-slanting seats are employed.

また、座面体がやゝ少しだけ後ろ傾斜であっても、それとの関係で、例えば背もたれの後ろ傾斜が過剰であるときには、この場合も尻が前滑りしやすいので、それに抵抗するために、身体には同じように腰痛が生じることになる。この点で、座面体と背もたれとは、整合性の点で角度的に密接に関係している。例えば、自動車の運転席について見ると、長時間にわたって運転の視界を保ちやすいように、背もたれをかなり後ろ傾斜にして使用されるが、それに対応するように、座面体は見た目にもはっきりと後ろ傾斜であり、こうして前滑りが防止されて身体の安定が保たれるように配慮してある。   In addition, even if the seat surface is slightly inclined backward, for example, if the back inclination of the backrest is excessive, the butt tends to slip forward in this case as well, Similarly, back pain will occur. In this respect, the seating body and the backrest are closely related in terms of consistency in terms of consistency. For example, when looking at the driver's seat of a car, the backrest is used with a considerably tilted back so that it is easy to keep the driving field of view for a long time. In this way, consideration is given to prevent body slip and keep the body stable.

さらに考察すると、背筋を伸ばし顎を引いた正しい姿勢を保持しやすい点から見ると、座面体は木製のように硬い材質であることが望ましい。しかし、硬い材質であると、尻および大腿部が身体の重みにより圧迫され、痛みを覚え、血行不良が生じる不都合がある。そこで、現在では、クッション性に優れた椅子が多用され、これも腰痛を招く一因となっている。   Considering further, it is desirable that the seating body is made of a hard material such as a wooden body from the viewpoint of easily maintaining the correct posture with the back stretched and the jaws pulled. However, if it is made of a hard material, the hips and thighs are compressed by the weight of the body, and there is a disadvantage that pain is felt and poor circulation occurs. Therefore, at present, chairs with excellent cushioning properties are frequently used, which also contributes to back pain.

この考案は、上記のような観点から、身体を正しい姿勢に保ちやすいように、また、立ち上がるのに容易な機動性を持たせるように、座面体を水平または水平に近い前傾斜若しくは後傾斜であるときにおいて、または背もたれに寄り掛かる姿勢において、尻が前滑りしないよう保持されるために、腰痛が生じるおそれがなくなる椅子を提供することを課題とした。   In view of the above, this device is intended to keep the body in a horizontal or near-horizontal forward or rearward inclination so that the body can be easily maintained in a correct posture and can be easily moved to stand up. It is an object of the present invention to provide a chair that eliminates the possibility of back pain because the hips are held so as not to slip forward at a certain time or in a posture leaning on the backrest.

上記の課題を解決するために、座面体が脚で支持される木製の椅子であって、その木製の座面体に、腰掛け箇所が体形的に一体に落ち込む尻当り部と左右大腿当り部とからなる浅い湾曲面の着座凹部を、該両当り部にわたって同一若しくはほゞ同一の深さにおいて設けることにより、左右大腿当り部の間の股当たりに、尻当り部と左右大腿当り部の深さから徐々に立ち上がる***部を形成し、着座凹部の全面若しくはほゞ全面に、さざ波が前後に進行する凹凸模様に多数の横長溝を溝切り加工により列設してあることを特徴とする椅子を構成した。   In order to solve the above-mentioned problem, the seat is a wooden chair supported by legs. By forming a seating recess having a shallow curved surface at the same or substantially the same depth over the both contact portions, the crotch between the left and right thigh contact portions can be reduced from the depth of the buttocks contact portion and the left and right thigh contact portions. Constructs a chair characterized by forming a raised part that rises gradually and lining up a number of horizontally elongated grooves in a concave-convex pattern in which the ripples move forward and backward over the entire surface of the seating recess did.

上記の構成によれば、例えば、背もたれに寄り掛かっても、身体の下端部が着座凹部に納まり、しかも、連続した横長溝に全面的に擦れると同時に、内股が***部に当たるために、前への滑りが阻止されるために、前への滑りに抵抗して身体に腰痛が生じるというような不都合がなくなる。   According to the above configuration, for example, even when leaning against the backrest, the lower end of the body is housed in the seating recess, and the entire crotch rubs against the continuous lateral groove at the same time. This prevents the inconvenience that the body suffers from low back pain by resisting forward sliding.

以上説明したように、この考案は、身体を正しい姿勢に保ちやすいように、また、立ち上がるのに容易な機動性を持たせるように、座面体を水平または水平に近い前傾斜若しくは後ろ傾斜であるときにおいて、または背もたれに寄りかけた姿勢において、尻が前滑りしないよう保持されるために、腰痛が生じるおそれがなくなる椅子を提供することに成功したものであって、しかも、この椅子によれば、横長溝による粗面と、股当たりの***部とによって、脚の大腿部が不都合に持ち上がる不自然な腰掛け姿勢となることなく、前滑りを阻止する形状である点において優れた効果を奏する。また、身体の尻部や大腿部が座面体に広く接触するために面積当たりの荷重が緩和され痛みが生じがたく、また、横長溝の凹凸により適度な刺激があり血行を良くする等の利点も併有する。   As described above, in the present invention, the seat surface body is horizontal or close to the front or rear in order to make it easy to keep the body in the correct posture and to make it easy to stand up. In some cases, or in a posture leaning against the back, it has been successful to provide a chair that eliminates the possibility of back pain because the buttocks are held against slipping, and according to this chair, In addition, it has an excellent effect in that it has a shape that prevents the front slip without causing an unnatural sitting posture in which the thigh of the leg is undesirably lifted by the rough surface by the laterally long groove and the raised portion per crotch . In addition, because the hips and thighs of the body come into wide contact with the seating surface, the load per area is reduced and pain does not occur easily. It has both advantages.

次に、この考案の実施形態を図面に基づいて説明する。   Next, an embodiment of the invention will be described with reference to the drawings.

図面は、一実施の形態を示したもので、その椅子は、木製であって、座面体1と、背もたれ2と、4本の脚3,3,3,3とから構成される。肘掛けは設けられていないが、別途に取り付けることもある。なお、この場合は、背もたれ2が湾曲しその両側が肘掛け4,4となっている。   The drawing shows an embodiment, and the chair is made of wood and is composed of a seat surface body 1, a backrest 2, and four legs 3, 3, 3, and 3. There is no armrest, but it may be attached separately. In this case, the backrest 2 is curved and its both sides are armrests 4 and 4.

座面体1は、脚3,3,3,3によって水平に保持されているが、この発明の趣旨から、水平に近い前傾斜または後ろ傾斜であっても良い。形状については、厚い木板に切削加工を施すことにより、着座凹部5を設けるとともに、着座凹部5に溝筋加工を施すことにより横長の溝7,7,・・を無数に列設してある。   The seat surface body 1 is held horizontally by the legs 3, 3, 3, 3. However, for the purpose of the present invention, the seat surface body 1 may have a front inclination or a rear inclination close to the horizontal. With respect to the shape, a seating recess 5 is provided by cutting a thick wooden board, and an infinite number of horizontally long grooves 7, 7,.

着座凹部5の形状については、使用者の尻部が落ち込む尻当り部9と、大腿が落ち込む大腿当り部11,11とが連続して一体に形成され、尻当り部9と大腿当り部11,11との最も低い箇所ではほゞ同じ高さである。したがって、最も低い箇所が同じ均一な低さにおいてU字形(尻当り部9から左右大腿当り部11,11に分かれる二股のU字形)になっている。   As for the shape of the seating recess 5, the buttocks 9 where the user's buttocks fall and the thighs 11 and 11 where the thigh falls are continuously formed integrally. At the lowest point with 11, the height is almost the same. Therefore, the lowest portion is U-shaped (a bifurcated U-shape that is divided from the buttocks 9 into the left and right thighs 11, 11) at the same uniform height.

そして、尻当り部9では、最も低い箇所が左右に広がっているが、大腿当り部11,11では、股当たりとなる部分、つまり左右間の中間では盛り上がってアール傾斜が拝み合わせとなるような***部15が形成される。また、***部15は、尻当り部9から前方へ徐々に高くなり(図1、図2,図3参照)、それからなだらかな緩い傾斜で低くなっている。   And the bottom part spreads to the left and right at the bottom part 9, but at the thighs part 11, 11, the part that becomes the crotch part, that is, the middle between the left and right rises, and the rounded slope becomes a meeting. A raised portion 15 is formed. In addition, the raised portion 15 gradually increases forward from the buttocks 9 (see FIGS. 1, 2 and 3), and then decreases with a gentle gentle slope.

着座凹部5のこのような形状において腰掛けると、身体の尻と大腿が正しく所定位置に納まることはもちろん、背もたれ2に背をもたれても、内股が***部15に当たるために尻が前滑りするする不都合が防止され、その結果、前滑りを阻止するために身体腰部に抵抗の力が働くことはなく、抵抗する無理な力が腰椎やその周辺の筋肉に発生しなく、その結果,腰痛の発生が防止される。   When sitting in such a shape of the seating recess 5, the hips and thighs of the body are properly placed in a predetermined position, and the hips slide forward because the inner crotch hits the raised portion 15 even when the backrest 2 is seated. Inconvenience is prevented, and as a result, resistance force does not act on the body waist to prevent forward slipping, and excessive force to resist does not occur in the lumbar spine and surrounding muscles, resulting in the occurrence of back pain Is prevented.

横長溝7,7,・・の形成については、刃先が底でアールになった刃物を使い、それを左右の横方向に進めながら、順次3〜10mm程度の細かいピッチで前後一方向に送りながら、さざ波のように前後方向に連続して凹凸が配列される。   For the formation of the laterally long grooves 7, 7,..., While using a blade whose edge is rounded at the bottom and advancing it in the horizontal direction on the left and right, feeding it in a forward and backward direction with a fine pitch of about 3 to 10 mm Unevenness is continuously arranged in the front-rear direction like ripples.

背もたれ2は、座面体1に4本の支柱17,17,17,17を立設することにより、上端の枠19が弓形に支持され、その両端が肘掛け4,4となっており、身体が着座凹部5とこの背もたれ2とに同時に納まるために、身体を休息させやすい。つまり、休息に適する構造であると同時に、上述の如く、仕事等をしやすく、しかも、いざというときに立ち上がりやすい機動性を具備していることになる。   The backrest 2 has four pillars 17, 17, 17, 17 erected on the seat body 1 so that the upper end frame 19 is supported in an arcuate shape, and both ends thereof are armrests 4, 4. Since the seating recess 5 and the backrest 2 are simultaneously accommodated, the body can be easily rested. In other words, the structure is suitable for rest, and at the same time, as described above, it is easy to work and has the mobility to easily stand up in case of emergency.

なお、以上において、一般的な椅子について述べてきたが、例えば背もたれの無いベンチや、脚の無い座椅子について実施しても、同じように腰痛が防止され、休息性や機動性が得られる。また、普通の椅子や座椅子に実施した場合において、いずれも座布団を座面体1の上に敷いて使用しても、間接的ではあるが同じような作用効果が得られる。   In the above, a general chair has been described. However, for example, even if it is carried out on a bench without a backrest or a seat chair without a leg, back pain is similarly prevented, and resting and mobility can be obtained. . Further, in the case where the present invention is applied to an ordinary chair or a seat chair, the same operation effect can be obtained though it is indirect even if a cushion is laid on the seat surface body 1 for use.

この考案の一実施形態を示す椅子の斜視図である。It is a perspective view of a chair showing one embodiment of this device. 二点鎖線で使用状態を示す図1におけるA−A線矢視の断面図である。It is sectional drawing of the AA arrow in FIG. 1 which shows a use condition with a dashed-two dotted line. 同椅子の座面体を横から見て、さらに一部を円内に取り出して拡大して示す断面図である。It is sectional drawing which sees the seat surface body of the chair from the side, and also takes out and expands a part further in a circle. 同椅子の正面図である。It is a front view of the chair. 同椅子の側面図である。It is a side view of the chair.

1 座面体
2 背もたれ
3 脚
5 着座凹部
7 横長溝
9 尻当り部
11 大腿当り部
15 ***部
DESCRIPTION OF SYMBOLS 1 Seat surface body 2 Backrest 3 Leg 5 Seating recessed part 7 Horizontally long groove 9 Bottom part 11 Thigh part 15 Raised part

Claims (1)

座面体が脚で支持される木製の椅子であって、その木製の座面体に、腰掛け箇所が体形的に一体に落ち込む尻当り部と左右大腿当り部とからなる浅い湾曲面の着座凹部を、該両当り部にわたって同一若しくはほゞ同一の深さにおいて設けることにより、左右大腿当り部の間の股当たりに、尻当り部と左右大腿当り部の深さから徐々に立ち上がる***部を形成し、着座凹部の全面若しくはほゞ全面に、さざ波が前後に進行する凹凸模様に多数の横長溝を溝切り加工により列設してあることを特徴とする椅子。
A seating body is a wooden chair supported by a leg, and a seating concave portion having a shallow curved surface composed of a buttocks portion and a left and right thigh contact portion in which the seating portion falls in a body shape integrally with the wooden seat surface body, By providing at the same or almost the same depth over the both contact portions, a ridge that gradually rises from the depth of the hip contact portion and the left and right thigh contact portions is formed at the crotch between the left and right thigh contact portions, A chair characterized in that a large number of horizontally long grooves are arranged in a concavo-convex pattern in which ripples travel back and forth on the entire surface of a seating recess or almost the entire surface by grooving.
JP2012001919U 2012-04-03 2012-04-03 Chair Expired - Lifetime JP3176305U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111938355A (en) * 2020-07-09 2020-11-17 广东阅生活家居科技有限公司 Round chair

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111938355A (en) * 2020-07-09 2020-11-17 广东阅生活家居科技有限公司 Round chair
CN111938355B (en) * 2020-07-09 2024-04-05 广东阅木居定制家居科技有限公司 Round-backed armchair

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