JP2531278Y2 - Seat cushion - Google Patents
Seat cushionInfo
- Publication number
- JP2531278Y2 JP2531278Y2 JP1988171542U JP17154288U JP2531278Y2 JP 2531278 Y2 JP2531278 Y2 JP 2531278Y2 JP 1988171542 U JP1988171542 U JP 1988171542U JP 17154288 U JP17154288 U JP 17154288U JP 2531278 Y2 JP2531278 Y2 JP 2531278Y2
- Authority
- JP
- Japan
- Prior art keywords
- layer member
- upper layer
- polyurethane
- foam
- seated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Laminated Bodies (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は、椅子や座椅子の座面上に置いて、或いは
スポーツ観戦時などに腰掛けやコンクリート面等の上に
敷いて、また室内で木質のフロアや畳上に敷いて、さら
には車等の座席に敷くなどして、その掛け心地、座り心
地を快適にするための座面クッションに関する。[Detailed description of the invention] [Industrial application field] This invention is placed on the seat of a chair or chair, or laid down on a stool or concrete surface when watching sports, and indoors. The present invention relates to a seat cushion for laying on a wooden floor or a tatami mat, and further laying on a seat of a car or the like so as to make it comfortable to wear and sit on.
座面クッションは、布地、皮革、人工皮革などの袋状
の表装体内に柔軟性を有する芯材を入れて形成されてい
るが、市販のクッションに入っている芯材としては、ポ
リウレタンフォーム、フォームラバー等の各種フォーム
材やポリエステル綿のような化繊綿が一般に使用されて
いる。The seat cushion is formed by putting a flexible core material in a bag-like outer material such as cloth, leather, or artificial leather. Various foam materials such as rubber and synthetic cotton such as polyester cotton are generally used.
クッションの形状としては、正方形、長方形、円形、
楕円形が一般的であるが、その他デザインに工夫を凝ら
した種々のものが市販されている。また、クッションの
表装体の表面には染色や刺繍により模様や図柄が施され
ており、近年では実用性、機能性よりも装飾性に重きを
おくような傾向が見受けられる。The shape of the cushion can be square, rectangular, circular,
An elliptical shape is generally used, but various other designs are also commercially available. In addition, patterns and patterns are applied to the surface of the cushion body by dyeing or embroidery, and in recent years, there has been a tendency to place emphasis on decorativeness over practicality and functionality.
また、クッションは、表装体内に入れる芯材の種類に
よって柔軟性、衝撃吸収性、弾力性などに違いが出る
が、また衝撃吸収力などはクッションの厚みによって左
右される。そして、一般には、クッションの厚みが大き
いほど衝撃吸収力が大きいため、嵩高いクッションほど
座り心地が良いように思われ勝ちであり、中央部分がア
ーチ形に大きく膨らんだクッションに人気があったりす
る。The cushion has different flexibility, shock absorption, elasticity, and the like depending on the type of the core material to be put in the case body, and the shock absorption and the like depend on the thickness of the cushion. And, in general, as the thickness of the cushion is larger, the shock absorbing power is larger, so it is easy to think that a bulky cushion has a better sitting comfort, and a cushion whose central part is greatly expanded in an arch shape is popular. .
また実開昭59-147515号公報、実開昭61-40963号公報
等には、特に痔疾病者用の座具として、クッション材の
中央部に貫通孔を形成した構成のものが開示されてい
る。Japanese Utility Model Application Laid-Open No. 59-147515 and Japanese Utility Model Application Laid-Open No. 61-40963 disclose a configuration in which a through-hole is formed in the center of a cushion material, particularly as a sitting tool for hemorrhoids. I have.
ところで、従来市販されている、各種フォーム材や化
繊綿を芯材にしたクッションは、その厚みの如何んを問
わず、軟らか過ぎるものが多い。このため、着座した時
の沈み込みが大きくて、比較的薄手のクッションでは、
底つき感（尻がこつんと底に突き当たる感じ）の有るも
のが多く、また厚手のクッションでは、大きな圧力が掛
かっている部分とそうでない部分との沈み込みの差が大
きくなるため、姿勢の変化に伴う体圧分布の変化により
座面の状態が一定せずに、着座した人の姿勢が安定しな
いことから、却って疲労を感じさせるようなことにもな
る。さらに、従来のクッションで着座時における臀部の
沈み込みが大きいと、クッションの前縁部における大腿
部裏側への圧迫が強まって、その部分の血行状態を阻害
したり、不快感を与えたりすることになる。また、従来
のクッションでは、表面が軟らか過ぎるため、着座した
時に座面での体圧の分散が余り無く、局部的に、すなわ
ち臀部の左右の座骨結節部に体重が集中して掛かる傾向
があり、その結果、座骨への圧迫が強まり、その部分の
血行が悪くなったり、不快感を与えたりする。さらにま
た、従来のクッションは、長年使用している間に復元性
が低下してへたってしまい、座り心地が悪くなるものが
多い。By the way, many cushions made of various foam materials and synthetic fibers which are conventionally commercially available are often too soft regardless of their thickness. For this reason, sinking when seated is large, with relatively thin cushions,
Many people have a feeling of bottoming (a feeling that the butt hits the bottom), and with thick cushions, the difference in sinking between the part where large pressure is applied and the part where it is not so large increases the posture change. Since the state of the seating surface is not constant due to the change in the body pressure distribution accompanying this, the posture of the seated person is not stable, so that the user may rather feel tired. Furthermore, if the hips sink deeply when seated with a conventional cushion, the pressure on the back of the thigh at the front edge of the cushion is increased, which impairs the blood circulation state of that part or gives discomfort. Will be. Also, with conventional cushions, the surface is too soft, so there is not much dispersion of body pressure on the seating surface when seated, and there is a tendency for weight to concentrate locally, that is, to the left and right ischial joints of the buttocks As a result, the pressure on the ischial is increased, and the blood circulation in that part is deteriorated or discomfort is given. Furthermore, many of the conventional cushions have poor restorability during long-term use, resulting in poor comfort.
以上のように、従来のクッションは、座り心地の点で
必ずしも満足し切れるものではないが、一方、上述した
ように、最近ではクッションの機能性よりもその装飾性
に関心が向けられる傾向がある。As described above, conventional cushions are not always satisfactory in terms of sitting comfort, however, as described above, recently, there has been a tendency to pay more attention to the decorativeness of the cushion rather than its functionality. .
また、実開昭59-147515号公報、実開昭61-40963号公
報等に記載されているように中央部に貫通孔が形成され
たクッションは、痔疾の人にとって、肛門部やその周辺
の患部がクッションに触れないため、痛みを感じなくて
済み好ましいものであるが、着座時に座面中における支
持の中心点となる左右の座骨結節部が位置する部分を含
めて貫通孔が形成されていたりすると、体重がクッショ
ンによって十分に支えられず、着座時の姿勢が安定しな
いことになる。また、クッションの中央部に上下に貫通
した孔が形成されていると、クッションに着座した時
に、貫通孔近辺が周辺部に比べて凹み易くなり、臀部が
その貫通孔の部分へ寄り気味になって、落ち込み感を生
じ、座り心地が悪くなるといったこともある。Also, as described in Japanese Utility Model Application Laid-Open No. 59-147515, Japanese Utility Model Application Laid-open No. 61-40963, a cushion having a through-hole formed in the center is suitable for hemorrhoids in the anus and its vicinity. Since the affected part does not touch the cushion, pain is not felt, which is preferable.However, a through hole is formed including the part where the left and right ischial tuberosities, which are the center points of support in the seating surface when sitting, are located. Otherwise, the weight is not sufficiently supported by the cushion, and the posture at the time of sitting becomes unstable. In addition, if a hole penetrating vertically is formed in the center of the cushion, when sitting on the cushion, the vicinity of the through hole becomes easier to dent than the peripheral part, and the buttocks tend to lean toward the part of the through hole. In some cases, the person feels depressed and becomes uncomfortable.
そこで、この考案は、尻と当接する表面部分が適度な
硬さを持ち、着座時における沈み込みがそれほど大きく
なく、かつ座面における適度な体圧の分散作用があり、
また長年にわたって使用してもへたりが少なく、しかも
比較的薄く形成できるにも拘らず座り心地が良好であ
り、また、痔疾の人や妊産婦、高齢者などにとっては、
座面から受ける刺激が無く又は少なく、着座時の安定感
が確保され、座り心地も良い、機能性に優れた座面クッ
ションを提供することを技術的課題とする。Therefore, in this invention, the surface part in contact with the buttocks has moderate hardness, sinking is not so large at the time of sitting, and there is a moderate body pressure dispersing action on the seat surface,
In addition, even if it is used for many years, there is little set, and it is relatively comfortable despite being relatively thin, and for people with hemorrhoids, pregnant women, elderly people, etc.
An object of the present invention is to provide a highly functional seat cushion that has little or no irritation received from the seat, secures a sense of stability at the time of sitting, and has good sitting comfort.
この考案は、上記課題を達成するための手段として、
座面クッションの、袋状の表装体内に収容される平板状
の芯材を、直径が200〜400μｍである多数の微細な気泡
（セル）を含んだ均一なミクロ的構造を有するポリウレ
タン微細セル発泡体により３〜8mmの一様な厚みに形成
された弾力性を有する上層部材と、反発弾性が６〜15％
であり硬さが11〜18kg（反発弾性の測定方法及び硬さの
測定方法は、それぞれJIS K 6401による。以下、同じ）
であって前記上層部材に比べて軟らかいポリウレタン低
反発性発泡体により上層部材の厚みの３〜10倍程度の一
様な厚みに形成され上層部材に重ね合わされて接着され
た下層部材とから構成し、前記上層部材の全面に多数の
貫通小孔を形成し、前記上層部材の中央部に、着座時に
おいて人体の局部及び肛門部が位置する部分を包含する
大きさの卵形であって着座時において少なくとも人体の
左右の座骨結節部が位置する卵形の両側２個所をそれぞ
れ半円形に残した形状を有する開口部を形設したことを
要旨とする。This invention is a means to achieve the above-mentioned subject,
Polyurethane microcellular foam with a uniform microstructure including a large number of microcells (cells) with a diameter of 200 to 400 µm, made of a flat core material contained in a bag-like surface body of a seat cushion. Elastic upper layer member formed to a uniform thickness of 3 to 8 mm by body, and rebound resilience of 6 to 15%
And the hardness is 11 to 18 kg (the method of measuring the rebound resilience and the method of measuring the hardness are based on JIS K 6401, respectively).
And a lower layer member formed by a polyurethane low resilience foam, which is softer than the upper layer member, to a uniform thickness of about 3 to 10 times the thickness of the upper layer member, and superimposed on and bonded to the upper layer member. A large number of small through holes are formed on the entire surface of the upper layer member, and the central portion of the upper layer member has an oval size including a portion where a local part and an anus part of a human body are located when seated, and is seated when seated. In the above, the gist is that an opening having a shape leaving at least two semicircular portions on both sides of the oval where at least the right and left ischial tuberosities of the human body are located is formed.
また、着座時において人体の左右の座骨結節部が位置
する部分に、ポリウレタン微細セル発泡体に代えて大き
なエネルギー吸収性を有するゴム状物質を使用し、その
ゴム状物質をポリウレタン微細セル発泡体形成部と面一
となるように下層部材に接着するようにしてもよい。In addition, a rubber-like substance having a large energy absorption is used in place of the polyurethane microcellular foam in the portion where the right and left ischial tuberosities of the human body are located when seated, and the rubber-like substance is used to form a polyurethane microcellular foam. You may make it adhere to a lower layer member so that it may become flush with a part.
（作用） 上記構成の芯材は、尻が当接する上層部材が、多数の
微細な気泡を含んだ均一なミクロ的構造を有するポリウ
レタン微細セル発泡体により下層部材に比べて硬く形成
されているので、着座時における沈み込みがそれほど大
きくなく、その上層部材の裏面側にポリウレタン低反発
性発泡体からなり上層部材に比べて軟らかい下層部材が
貼り合わされてその下層部材によって上層部材を支持し
ているので、適度の柔軟性を有しながら底つき感などが
無い。また、着座時における沈み込みが少ないため、体
圧の分布状態が変化しても、それに伴う座面状態の変化
の程度が少なく、かつ上層部材と下層部材との積層構造
からなる平板状に形成されているので、着座時の姿勢が
安定し、また、クッションによる大腿部裏側並びに両座
骨結節部への圧迫感も無い。さらに、下層部材に比べて
硬い上層部材によって着座時における体圧が適当に分散
されるとともに、反発弾性が小さい下層部材によってさ
らに体圧が均等に分散され、体重が局部的に集中したり
することが少ないので、座骨への圧迫感も比較的少な
い。しかも、上層部材を形成するポリウレタン微細セル
発泡体及び下層部材を形成するポリウレタン低反発性発
泡体は共に経時変化が少なく、長年使用しても芯材のへ
たりが少ない。そして、下層部材はその反発弾性が６〜
15％と小さいので、尻が座面に接してから落ち着くまで
芯材は徐々に沈み込み、その沈み具合に違和感が無く、
好ましい感じを与える。また、芯材全体は薄い平板状に
形成されているので、嵩張らず、持ち運びにも便利であ
る。さらにまた、上層部材を形成するポリウレタン微細
セル発泡体は、微細なセル構造を有し高密度であるが、
上層部材には、その全面に多数の貫通小孔が形成されて
いるので、それらの貫通小孔を通して通気性が十分に確
保される。ここで、ポリウレタン発泡体（ポリウレタン
フォーム）の密度は、普通20〜40kg/m3であり（岩田敬
治著「ポリウレタン樹脂ハンドブック」（初版）、1993
年９月20日 日刊工業新聞社 第２刷発行、p.161の図
5.8、p.162の表5.4;産業調査会編「実用プラスチック事
典」（初版）、1987年９月25日 事典出版センター発
行、p.266左欄第６行参照）、一般的には100kg/m3以上
の密度を「高密度」と言っている。(Function) In the core material having the above-described structure, the upper layer member to which the buttocks abut is formed harder than the lower layer member by a polyurethane microcell foam having a uniform microscopic structure including many fine bubbles. Since the sink when seated is not so large, a lower layer member made of polyurethane low resilience foam, which is softer than the upper layer member, is bonded to the back side of the upper layer member, and the upper layer member is supported by the lower layer member. It does not have a feeling of bottoming while having moderate flexibility. In addition, since there is little sinking during sitting, even if the distribution state of body pressure changes, the degree of change in the seat surface state accompanying it is small, and it is formed in a flat plate shape composed of a laminated structure of upper layer member and lower layer member As a result, the posture at the time of sitting is stable, and there is no feeling of pressure on the back side of the thigh and the joints of both ischial bones due to the cushion. In addition, the body pressure when seated is appropriately dispersed by the upper member that is harder than the lower member, and the body pressure is evenly dispersed by the lower member having low rebound resilience, and the body weight is locally concentrated. Because there is little, there is relatively little feeling of pressure on the ischium. In addition, the polyurethane fine cell foam forming the upper layer member and the polyurethane low resilience foam forming the lower layer member both have little change over time and have little settling of the core material even when used for many years. The lower layer member has a rebound resilience of 6 to
As it is small at 15%, the core material gradually sinks until the buttocks come in contact with the seating surface and calms down, and there is no discomfort in the sinking condition,
Give a good feeling. Further, since the whole core material is formed in a thin flat plate shape, it is not bulky and is convenient for carrying. Furthermore, the polyurethane fine cell foam forming the upper layer member has a fine cell structure and a high density,
Since a large number of small through holes are formed on the entire surface of the upper layer member, air permeability is sufficiently secured through the small through holes. Here, the density of a polyurethane foam (polyurethane foam) is usually 20 to 40 kg / m 3 (“Polyurethane Resin Handbook” by Keiji Iwata (First Edition), 1993)
September 20, 2000 Nikkan Kogyo Shimbun, second print, p.161
5.8, p.162, Table 5.4; Practical Plastics Encyclopedia, edited by the Industrial Research Council (First Edition), published by the Encyclopedia Publishing Center on September 25, 1987, p.266, left column, line 6), generally 100kg / A density of m 3 or more is called “high density”.
また、上層部材の中央部に、着座時において人体の局
部及び肛門部が位置する部分を包含する大きさの卵形で
あって着座時において少なくとも人体の左右の座骨結節
部が位置する卵形の両側２個所をそれぞれ半円形に残し
た形状を有する開口部が形設されているので、その開口
部での通気性及び透湿性が良好となり、長時間着座して
も蒸れたりすることがなくなる。また、痔疾の人や妊産
婦、高齢者などにとっては、その局所に対し座面から受
ける刺激が無くなり又は軽減されることになる。さら
に、その場合において、着座した際に座面中における支
持の中心点となる、人体の左右の座骨結節部が位置する
部分は残されているので、着座時の安定感が確保され
る。Further, in the center of the upper layer member, an oval of a size including a portion where a local part and an anus of the human body are located at the time of sitting, and at least the right and left ischial tuberosities of the human body are located at the time of sitting. Since an opening having a shape leaving two semi-circular portions on both sides is formed, air permeability and moisture permeability at the opening are good, and there is no dampness even when sitting for a long time. In addition, for a person with hemorrhoids, a pregnant woman, an elderly person, and the like, the stimulus received from the sitting surface to the local part is eliminated or reduced. Further, in this case, since the left and right ischial tuberosities of the human body, which are the center points of support in the seating surface when seated, are left, a sense of stability at the time of seating is ensured.
また、着座時において最も圧力が集中する座骨結節部
が位置する部分に、ポリウレタン微細セル発泡体に代え
て大きなエネルギー吸収性を有するゴム状物質を使用
し、そのゴム状物質をポリウレタン微細セル発泡体形成
部と面一となるように下層部材に接着するようにするこ
とにより、その部分での衝撃吸収力が増し、衝撃が緩和
されて着座感が向上する。In addition, a rubber-like substance having a large energy absorbing property is used in place of the polyurethane microcellular foam in a portion where the ischial tuberosity where the pressure is most concentrated at the time of sitting is used, and the rubber-like substance is used as the polyurethane microcellular foam. By adhering to the lower layer member so as to be flush with the forming portion, the impact absorbing power at that portion is increased, the impact is reduced, and the seating feeling is improved.
以下、この考案の好適な実施例について図面を参照し
ながら説明する。Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
第１図ないし第４図はこの考案の１実施例を示し、第
１図は、座面クッションの芯材の全体斜視図、第２図
は、その平面図、第３図は、その一部を拡大して破断状
態で表わした斜視図、第４図は、第１図のＡ部分を拡大
して表わした部分縦断面図である。第１図において、矢
印で示した方向がクッションの前側になる（第２図及び
第５図においても同じ）。この芯材10は、ポリウレタン
微細セル発泡体により形成され、一様な厚みを有し、弾
力性をもった硬い上層部材12と、ポリウレタン低反発性
発泡体により形成され、一様な厚みを有し、かつ上層部
材12より分厚くて軟らかい下層部材14とからなり、それ
らを互いに重ね合わせて接着剤により接着することによ
り平板状に形成されている。そして、上層部材12の全面
に、第３図に示すように、多数の貫通小孔16（第１図及
び第２図では図示を省略）が散在して形成されている。1 to 4 show an embodiment of the present invention. FIG. 1 is an overall perspective view of a core material of a seat cushion, FIG. 2 is a plan view thereof, and FIG. FIG. 4 is an enlarged perspective view showing a part A of FIG. 1 in a broken state, and FIG. In FIG. 1, the direction indicated by the arrow is the front side of the cushion (the same applies to FIGS. 2 and 5). The core material 10 is formed of a polyurethane fine cell foam, has a uniform thickness, is formed of a hard upper layer member 12 having elasticity, and a polyurethane low resilience foam, and has a uniform thickness. The lower layer member 14 is thicker and softer than the upper layer member 12, and is formed in a flat plate shape by superimposing them and bonding them with an adhesive. As shown in FIG. 3, a large number of small through holes 16 (not shown in FIGS. 1 and 2) are formed scattered on the entire surface of the upper layer member 12.
上層部材12を形成しているポリウレタン微細セル発泡
体は、高密度、例えば比重が240kg/m3で、極めて微細か
つ均一なセル構造、すなわち直径が200〜400μｍ程度の
多数の気泡を含んだ均一なミクロ的構造を有しており、
硬さが、例えば30kg程度であるポリウレタンの発泡体で
ある。また、下層部材14を形成しているポリウレタン低
反発性発泡体は、通常のポリウレタンフォームより低分
子量のモノマーを使用して製造されたものであり、反発
弾性が小さく、例えば反発弾性が６〜15％であり、密度
が、例えば75kg/m3で、硬さが11〜18kg程度と上層部材1
2より軟らかいポリウレタンの発泡体である。上記した
ように、上層部材12を形成しているポリウレタン微細セ
ル発泡体は、高密度であるため通気性に欠けるが、上層
部材12には多数の貫通小孔16が形成されているので、そ
れらの貫通小孔16を通して通気性が十分に確保される。
また、上層部材12を形成するポリウレタン微細セル発泡
体及び下層部材14を形成するポリウレタン低反発性発泡
体は共に経時変化が少なく、長年使用しても芯材10のへ
たりが少ない。Polyurethane microcellular foam forming the upper member 12, a high density, for example, a specific gravity of 240 kg / m 3, including very fine and uniform cell structure, i.e., the number of bubbles of about a diameter 200~400μm uniform Has a microscopic structure,
It is a polyurethane foam having a hardness of, for example, about 30 kg. Further, the polyurethane low resilience foam forming the lower layer member 14 is manufactured using a monomer having a lower molecular weight than ordinary polyurethane foam, and has a low rebound resilience, for example, a rebound resilience of 6 to 15%. %, The density is, for example, 75 kg / m 3 and the hardness is about 11 to 18 kg.
It is a polyurethane foam softer than 2. As described above, the polyurethane microcellular foam forming the upper layer member 12 lacks air permeability because of its high density, but since the upper layer member 12 has a large number of small through holes 16 formed therein, The air permeability is sufficiently secured through the small through holes 16.
In addition, the polyurethane fine cell foam forming the upper layer member 12 and the polyurethane low resilience foam forming the lower layer member 14 both have little change with time, and the core material 10 has little sag even when used for many years.
この芯材10の各部の寸法の１例を示すと、座面の前後
方向の寸法が40cm、幅方向の寸法が44cmであり、上層部
材12の厚みは３〜8mm、下層部材14の厚みは、上層部材
の厚みの３〜10倍程度で15〜30mm、芯材10の全体の厚み
は20〜35mm程度であり、貫通小孔16の径は1mm程度であ
る。このように、芯材10全体は薄い平板状に形成されて
いるので、嵩張らず、持ち運びにも便利である。An example of the dimensions of each part of the core 10 is as follows: the dimension of the seat surface in the front-rear direction is 40 cm, the dimension in the width direction is 44 cm, the thickness of the upper layer member 12 is 3 to 8 mm, and the thickness of the lower layer member 14 is The thickness of the core material 10 is about 15 to 30 mm, which is about 3 to 10 times the thickness of the upper layer member, the overall thickness of the core material 10 is about 20 to 35 mm, and the diameter of the small through hole 16 is about 1 mm. As described above, since the entire core material 10 is formed in a thin flat plate shape, it is not bulky and is convenient to carry.
以上のように、この芯材10は、尻が当接する上層部材
12がポリウレタン微細セル発泡体により下層部材に比べ
て硬く形成されているので、着座時における沈み込みが
それほど大きくならない。一方、上層部材12の裏面側に
は、ポリウレタン低反発性発泡体からなり上層部材12よ
り軟らかい下層部材14が積層されているので、適度の柔
軟性を有しながら底つき感が無い。また、着座時におけ
る沈み込みが少ないため、座面状態の変化の程度が少な
く、かつ全体が平板状に形成されているので、着座者の
姿勢が安定し、大腿部裏側への圧迫感も無い。そして、
硬い上層部材12によって着座時における体圧が適当に分
散されるとともに、反発弾性が小さい下層部材14によっ
てさらに体圧が均等に分散され、体重が座骨へ集中的に
掛かったりすることが防止される。また、この芯材10の
下層部材14はその反発弾性が小さいので、尻が座面に接
してから落ち着くまで芯材は徐々に沈み込み、着座した
途端に一気に沈み込んで不快な感じを与えたりすること
が無い。As described above, this core material 10 is an upper layer member with which the buttocks abut.
Since 12 is made of polyurethane fine cell foam and is harder than the lower layer member, sinking during sitting is not so large. On the other hand, since the lower layer member 14 made of a polyurethane low resilience foam and softer than the upper layer member 12 is laminated on the back surface side of the upper layer member 12, there is no feeling of bottoming while having appropriate flexibility. In addition, since there is little sinking during sitting, the degree of change in the state of the seat surface is small, and since the whole is formed in a flat plate shape, the posture of the seated person is stable, and the feeling of pressure on the back side of the thigh is also reduced. There is no. And
The body pressure during sitting is appropriately dispersed by the hard upper layer member 12, and the body pressure is further evenly dispersed by the lower layer member 14 having low rebound resilience, thereby preventing the body weight from being concentrated on the ischium. . In addition, since the lower layer member 14 of the core member 10 has a small rebound resilience, the core member gradually sinks until the buttocks come in contact with the seating surface and then settles down, and immediately sinks as soon as it is seated, giving an unpleasant feeling. I do not have.
また、この芯材10は、上層部材22の中央部に、着座時
において人体の局部及び肛門部が位置する部分に対応し
た形状及び寸法の開口部18が形成されており、その開口
部18の部分では、下層部材14の一部が表面に露呈してい
る。開口部18は、第２図に示すように、卵形の両側２個
所をそれぞれ半円形に残した形状に形成されている。開
口部18の長径及び短径寸法は、例えばそれぞれ170mm、1
05mmである。In the core member 10, an opening 18 having a shape and a size corresponding to a part where a local part and an anus part of a human body is located at the time of sitting is formed in a central portion of the upper layer member 22, and the opening 18 is formed. In the portion, a part of the lower layer member 14 is exposed on the surface. As shown in FIG. 2, the opening 18 is formed in a shape leaving two semicircular portions on both sides of the oval. The major axis and minor axis of the opening 18 are, for example, 170 mm and 1 mm, respectively.
It is 05mm.
このように芯材10には、その上層部材22の中央部に開
口部18が形成されているので、その開口部18における通
気性及び透湿性が良好となり、長時間着座しても蒸れた
りすることが無くなる。また、痔疾の人や妊産婦などに
とっては、その局所に対し座面から受ける刺激が少なく
なり、不快感が軽減される。Since the opening 18 is formed at the center of the upper layer member 22 in the core material 10 in this manner, the air permeability and the moisture permeability in the opening 18 are improved, and even if the user sits for a long time, it becomes stuffy. Is lost. In addition, for a person with hemorrhoids, a pregnant woman, or the like, the local area receives less stimulation from the seating surface, and discomfort is reduced.
また、開口部18は、卵形の両側２個所をそれぞれ半円
形に残して、着座時において人体の左右の座骨結節部が
位置する部分20、20が残っていることにより、着座した
際にそれらの部分20、20が座面中における支持の中心点
となるので、着座時の姿勢が安定する。In addition, the opening 18 leaves two portions of the oval on both sides in a semicircular shape, and the portions 20 and 20 where the left and right ischial tuberosities of the human body are located at the time of sitting remain. The portions 20, 20 are the center points of support in the seating surface, so that the posture at the time of sitting is stable.
また、第５図に平面図を、第６図に第５図のVI-VI部
分縦断面図をそれぞれ示すように、着座時において人体
の左右の座骨結節部が位置する部分に、ポリウレタン微
細セル発泡体に代えてウレタンゴム、シリコンゴム、天
然ゴム等の大きなエネルギー吸収性を有するゴム状物質
を使用し、そのゴム状物質からなる円形小板40、40を上
層部材32のポリウレタン微細セル発泡体形成部と面一と
なるように下層部材34に接着して、芯材30を構成するよ
うにしてもよい。図中、36が貫通小孔、38が開口部であ
る。このように、着座時において最も圧力が集中する座
骨結節部が位置する部分に大きなエネルギー吸収性を有
するゴム状物質を使用することにより、その部分での衝
撃吸収力が増し、衝撃が緩和されて着座感が向上する。Further, as shown in a plan view in FIG. 5 and a partial vertical sectional view taken along the line VI-VI in FIG. 5, a polyurethane fine cell is provided at a portion where the right and left ischial tuberosities of the human body are located when seated. In place of the foam, a rubbery substance having a large energy absorbing property such as urethane rubber, silicone rubber, or natural rubber is used, and the circular small plates 40, 40 made of the rubbery substance are used as the polyurethane fine cell foam of the upper layer member 32. The core member 30 may be configured to be adhered to the lower layer member 34 so as to be flush with the formation portion. In the figure, 36 is a small through hole, and 38 is an opening. As described above, by using a rubber-like substance having a large energy absorption in a portion where the ischial tuberosity where pressure is most concentrated at the time of sitting is located, a shock absorbing power in the portion is increased, and a shock is reduced. The feeling of sitting is improved.
この考案は以上説明したように構成されかつ作用する
ので、この考案に係る座面クッションは、尻と当接する
表面部分が適度な硬さを持ち、着座時における沈み込み
がそれほど大きくないため、着座した時の底つき感を感
じるようなことがなく、また着座した人の姿勢が安定
し、長時間座っていても疲労を感じるようなことが少な
い。さらに、大腿部裏側への圧迫も少なく、また、座面
における適度な体圧の分散作用があるため、座骨への圧
迫も少ないため、快適である。また、芯材のへたりが少
ないため、長年にわたって使用することができる。しか
も、比較的薄く形成できるため、携行にも便利である。
また、痔疾の人や妊産婦、高齢者などにとっては、局所
に対し座面から受ける刺激が無くなり又は軽減され、着
座時の安定感も確保されて、座り心地の良いものであ
る。Since the present invention is configured and operates as described above, the seat cushion according to the present invention has an appropriate hardness at the surface portion that comes into contact with the buttocks, and the sink when seated is not so large. There is no feeling of bottoming when the user sits down, and the posture of the seated person is stable, and there is little feeling of fatigue even when sitting for a long time. In addition, there is less pressure on the back of the thigh, and there is an appropriate action of dispersing the body pressure on the seat surface, so there is less pressure on the ischium, which is comfortable. Further, since the core material has a small set, it can be used for many years. Moreover, since it can be formed relatively thin, it is convenient for carrying.
In addition, for a person with hemorrhoids, a pregnant woman, an elderly person, etc., the local stimulation from the seat is eliminated or reduced, and a sense of stability at the time of sitting is ensured, and the seat is comfortable.
以上の通り、この考案は、座り心地が良好で機能性に
優れた座面クッションを提供し得たものである。As described above, the present invention has provided a seat cushion having good sitting comfort and excellent functionality.
第１図は、この考案の１実施例に係る座面クッションの
芯材の全体斜視図、第２図は、その平面図、第３図は、
その一部を拡大して破断状態で表わした斜視図、第４図
は、第１図のＡ部分を拡大して表わした部分縦断面図、
第５図は、別の構成例に係る芯材の平面図、第６図は、
第５図のVI-VI部分縦断面図である。 10、30……芯材、12、32……上層部材、14、34……下層
部材、16、36……貫通小孔、18、38……開口部、20……
着座時において人体の左右の座骨結節部が位置する部
分、40……ゴム状物質からなる円形小板。FIG. 1 is an overall perspective view of a core material of a seat cushion according to one embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG.
FIG. 4 is an enlarged perspective view of a part of FIG.
FIG. 5 is a plan view of a core material according to another configuration example, and FIG.
Fig. 6 is a partial vertical sectional view taken along the line VI-VI in Fig. 5. 10, 30 ... core material, 12, 32 ... upper layer member, 14, 34 ... lower layer member, 16, 36 ... small through hole, 18, 38 ... opening, 20 ...
The part where the left and right ischial tuberosities of the human body are located when seated, 40 ... a circular plate made of rubber-like substance.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭59−147515（ＪＰ，Ｕ) 実開 昭60−130764（ＪＰ，Ｕ) 実開 昭60−167565（ＪＰ，Ｕ) 実開 昭55−93369（ＪＰ，Ｕ) 実開 昭61−40963（ＪＰ，Ｕ) 実公 昭59−42018（ＪＰ，Ｙ１) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho-59-147515 (JP, U) Japanese Utility Model Sho 60-130764 (JP, U) Japanese Utility Model Sho 60-167565 (JP, U) Japanese Utility Model Sho-55 93369 (JP, U) Shokai Sho 61-40963 (JP, U) Shoko Sho 59-42018 (JP, Y1)
Claims (2)
なる座面クッションにおいて、 前記芯材を、直径が200〜400μｍである多数の微細な気
泡を含んだ均一なミクロ的構造を有するポリウレタン微
細セル発泡体により３〜8mmの一様な厚みに形成された
弾力性を有する上層部材と、JIS K 6401による反発弾性
が６〜15％でありJIS K 6401による硬さが11〜18kgであ
って前記上層部材に比べて軟らかいポリウレタン低反発
性発泡体により上層部材の厚みの３〜10倍程度の一様な
厚みに形成され上層部材に重ね合わされて接着された下
層部材とから構成し、 前記上層部材の全面に多数の貫通小孔を形成し、 前記上層部材の中央部に、着座時において人体の局部及
び肛門部が位置する部分を包含する大きさの卵形であっ
て着座時において少なくとも人体の左右の座骨結節部が
位置する卵形の両側２個所がそれぞれ内側へ半円形に出
っ張った形状を有する開口部を形設したことを特徴とす
る座面クッション。1. A seat cushion in which a flat core material is accommodated in a bag-shaped outer case, wherein the core material is a uniform microscopic material containing a large number of fine air bubbles having a diameter of 200 to 400 μm. An elastic upper layer member formed to a uniform thickness of 3 to 8 mm by a polyurethane fine cell foam having a structure, and a rebound resilience according to JIS K 6401 of 6 to 15% and a hardness of JIS K 6401 of 11 1818 kg and a lower layer member which is formed by a polyurethane low resilience foam which is softer than the upper layer member and has a uniform thickness of about 3 to 10 times the thickness of the upper layer member and is superposed on and adhered to the upper layer member. The upper layer member is formed with a large number of small through holes on the entire surface thereof, and has an oval shape having a size including a portion where a local part and an anus part of a human body are located when seated at a central portion of the upper layer member. At least left and right of the human body when sitting Seating surface cushions, characterized in that the oval sides two places where the ischial tuberosities portion is located has Katachi設 an opening having a bulged shape semicircular inwardly respectively.
位置する部分に、ポリウレタン微細セル発泡体に代えて
大きなエネルギー吸収性を有するゴム状物質を使用し、
そのゴム状物質をポリウレタン微細セル発泡体形成部と
面一となるように下層部材に接着してなる請求項１記載
の座面クッション。2. A rubber-like substance having a large energy absorption is used in place of the polyurethane microcellular foam in the portion where the left and right ischial tuberosities of the human body are located when seated,
2. The seat cushion according to claim 1, wherein the rubbery substance is adhered to the lower layer member so as to be flush with the polyurethane fine cell foam forming portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988171542U JP2531278Y2 (en) | 1988-12-30 | 1988-12-30 | Seat cushion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988171542U JP2531278Y2 (en) | 1988-12-30 | 1988-12-30 | Seat cushion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0292755U JPH0292755U (en) | 1990-07-24 |
| JP2531278Y2 true JP2531278Y2 (en) | 1997-04-02 |
Family
ID=31463468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988171542U Expired - Lifetime JP2531278Y2 (en) | 1988-12-30 | 1988-12-30 | Seat cushion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2531278Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008500075A (en) * | 2004-05-28 | 2008-01-10 | ダンフォーム・エーピーエス | Body support cushion |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100392725B1 (en) * | 2000-03-22 | 2003-07-28 | 주식회사 울타리 | Cushion member for seat, manufacturing method of cushion member utilizing waste materials and the seat for correction of body utilizing thereof |
| JP4719342B2 (en) * | 2000-08-24 | 2011-07-06 | 株式会社イノアックコーポレーション | Seat cushion pad |
| JP2006014819A (en) * | 2004-06-30 | 2006-01-19 | Inoac Corp | Elastic mattress |
| JP2006089718A (en) * | 2004-08-24 | 2006-04-06 | Bridgestone Corp | Molded article of polyurethane foam |
| JP5559442B1 (en) * | 2014-03-13 | 2014-07-23 | 石松 蔦子 | Chair |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5639413Y2 (en) * | 1978-12-22 | 1981-09-14 | ||
| JPS60130764U (en) * | 1984-02-13 | 1985-09-02 | 芝田 全弘 | rug |
| JPS60167565U (en) * | 1984-04-18 | 1985-11-07 | 宇部興産株式会社 | Composite core material for bedding |
-
1988
- 1988-12-30 JP JP1988171542U patent/JP2531278Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008500075A (en) * | 2004-05-28 | 2008-01-10 | ダンフォーム・エーピーエス | Body support cushion |
| JP4856630B2 (en) * | 2004-05-28 | 2012-01-18 | ダンフォーム・エーピーエス | Body support cushion |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0292755U (en) | 1990-07-24 |
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| EXPY | Cancellation because of completion of term |