JP2004073713A

JP2004073713A - Mat for chair

Info

Publication number: JP2004073713A
Application number: JP2002241513A
Authority: JP
Inventors: Takashi Kajiwara; 梶原　隆司; Hiroshi Onishi; 大西　洋; Toshiyasu Nakao; 中尾　俊泰
Original assignee: Molten Corp
Current assignee: Molten Corp
Priority date: 2002-08-22
Filing date: 2002-08-22
Publication date: 2004-03-11

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mat that can prevent a buttock slip forward by its bulky member which enables the user of a wheelchair maintain a stable and comfortable posture. <P>SOLUTION: The mat is composed of a flat cushion member 5 that is placed on a seat 2 of a chair, a gelatinous member 9 that is laid under a buttock seating part 8 of the cushion member, and a bulky member 12 that is detachably installed on the surface of a thigh seating part 11 of the cushion and makes the height of the thigh seating part higher than the buttock seating part 8. The bulky member is composed of a large number of bulky member parts 13 that are divided at parting lines 16 that run to the longitudinal direction from a sitter and by arbitrarily changing the number of the bulky member parts across directional width D of the bulky member is changeable. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、椅子特に車椅子の座面に敷かれて有益な椅子用マットに関する。
【０００２】
【従来の技術】
体が不自由な患者が車椅子で移動する場合、振動により体が前にずれて不安定な姿勢になりやすく、また患者の仙骨が座面にあたって圧迫され褥創の原因になるおそれがある。従来このような不具合を解消するため、座面にマットを敷き、かつマット前部、すなわち大腿部が接する座面に肉厚部分あるいは補高材を載置して、臀部が前にずれない構造としたものがある（特開平１１−３０９０４７号公報、特開２００２−８５２０７号公報）。
【０００３】
【発明が解決しようとする課題】
上記公報において大腿部座面に配置される肉厚部分あるいは補高材は、大腿部を持ち上げて着座した患者の臀部が前にずれるのを防ぎ、安定な姿勢に保つ作用は得られるものの、その前後方向の幅が一定であるために患者の体格の大きさに応じてその幅を調整できないという不具合がある。すなわち体の大きな患者の場合、臀部が肉厚部分あるいは補高材に当たって不快感を感じさせ、あるいは所期の目的とは逆に褥創発生を促進させるおそれさえある。
【０００４】
本発明は、このような事情を考慮してなされたものであり、上記肉厚部分あるいは補高材（以下本発明においては嵩高部材という）の前後方向の幅を任意に変更できる構造として、嵩高部材による患者の不快感を最小限のものにすると同時に、臀部座面にゲル状部材を埋設して臀部に加わる患者の体重を分散させる椅子用マットを提供するものである。
【０００５】
【課題を解決するための手段】
本発明（請求項１）は、椅子の座面に敷かれる平板状のクッション部材と、該クッション部材の臀部座面に埋設されたゲル状部材と、上記クッション部材の大腿部座面表面に着脱自在に取りつけられ、上記臀部座面より上記大腿部座面を高くする嵩高部材とからなり、該嵩高部材は、着座者の左右方向の分割線にて分割された複数個の嵩高部材部分よりなり、該嵩高部材部分の個数を任意に変えることにより上記嵩高部材の前後方向の幅を変更可能としたものである。
【０００６】
かかる構成において、嵩高部材は複数個の嵩高部材部分に分割され、患者の体格に合わせ、具体的には座面上の患者の大腿部の長さに合わせてその幅が調整され、クッション部材の大腿部座面に取りつけられる。またクッション部材の臀部座面に埋設されたゲル状部材により臀部に加わる体重が効率よく分散される。
【０００７】
本発明（請求項２）において、上記嵩高部材は、着座者の前後方向中央の分割線にて分割され、左右大腿部の座面に対応した嵩高部材部分よりなるものである。
【０００８】
かかる構成において、嵩高部材部分は左右大腿部にそれぞれ単独に取りつけることができる。例えば片足のみ不自由な患者が、車椅子に座った状態で正常な一方の足を床につき車椅子を前進させる動作をすることがあるが、かかる動作をするには正常な足の大腿部座面には嵩高部材部分が存在しない方が望ましいのである。なおこの場合、他方の不自由な足の大腿部座面には嵩高部材部分が存在して体のずれを抑制し、正常な姿勢を維持する作用をなす。
【０００９】
【発明の実施の形態】
以下、本発明の一実施形態を図面に基づき説明する。
【００１０】
図１〜図４において、１は車椅子、２は車椅子の座面である。３はこの車椅子１に座る体の不自由な人や患者、４は患者３が座る車椅子１の座面２に敷かれる椅子用マットである。
【００１１】
椅子用マット４は、図１に示すように、座面２に敷かれる平面形状のクッション部材５を有している。このクッション部材５としては、厚さ約３ｃｍのポリウレタンフォーム等の緩衝材料を用いることができる。クッション部材５の底面には、座面に敷いたときずれたりしないように滑り止めシート６が全面的に貼り付けられている。滑り止めシート６は、ナイロン織布にポリウレタンを含浸した滑り止め部材を用いることができる。
【００１２】
クッション部材５において、患者３の臀部７が当たる臀部座面８には、ポリエチレンゲル等よりなるゲル状部材９より形成された厚さ約１ｃｍの矩形シート状の補助クッション材をその上方位置に埋設し、二重構造とし、クッション性を高めると同時に臀部７に加わる患者の体重を分散させ姿勢の安定及び座り心地を良くしている。
【００１３】
クッション部材５の前方部は、座った患者３の大腿部１０を受ける大腿部座面１１とされ、ここには臀部座面８より大腿部座面１１を高くする嵩高部材１２が配設されている。嵩高部材１２は、複数個、本実施例では３個の細長い長方体形状をした嵩高部材部分１３より構成されている。こうして嵩高部材１２により、座った患者３の大腿部１０を少し持ち上げ気味とすることで、着座した患者３の臀部７を前にずれないようにし、安定した姿勢で座り続けられるようになる。
【００１４】
これら嵩高部材部分１３のうち、臀部座面８との境に位置する嵩高部材部分１３は、臀部座面８に向かい低くなるよう傾斜した断面直角３角形状の嵩高部材部分に形成され、嵩高の大腿部座面１１とそれより低い臀部座面８とが緩いスロープでつながって、段差にならないようにしている。ゲル状部材９を埋設したクッション部材５は、その全体をカバーシート２０で被覆されている。このカバーシート２０は、ポリエステル織布にウレタンコーティングを施したシートが使用でき、ゲル状部材９の滲出を防ぐため非通気性とされている。
【００１５】
複数個の嵩高部材部分１３には、それぞれその裏面に面状ファスナー１４が形成されている。また、各嵩高部材部分１３も、上記クッション部材５と同様に、ポリエステル織布にウレタンコーティングを施したカバーシート２１で、その全体が被覆されている。一方、クッション部材５の大腿部座面１１の方の表面にも、面状ファスナー１５が形成されている。従って、嵩高部材部分１３はその１つ１つが大腿部座面１１に、互いの面状ファスナー１４，１５でもって、自在に取り付け固定したり取り外したりすることができる。面状ファスナー１４，１５は、嵩高部材部分１３の裏面側が鈎部にて、また大腿部座面１１の表面側がループ部にて構成されている。ループ部の方が感触が柔らかいため、この面を体が接触する大腿部座面１１表面に配置したものである。
【００１６】
このように、個々の嵩高部材部分１３は、クッション部材５の大腿部座面１１に互いの面状ファスナー１４，１５によって着脱自在に装着することができるので、その取付個数を変更することができる。したがって、取り付けた個数により、嵩高部材１２の前後方向の幅Ｄを自在に調整することができる。これにより着座者の大腿部１０の長さに合わせた嵩高部材１２を得ることができるため、体格が違っても着座者の大腿部１０は、嵩高部材１２にフィットし良い感触で受けられ、違和感、不快感は軽減し長時間座っても楽である。
【００１７】
また、複数個の嵩高部材部分１３を取り付けたとき、隣り合った嵩高部材部分１３同士の間に形成される複数の溝１６（分割線）は、通気作用を有する。嵩高部分１２で大腿部１０を密着して受けても、この部分でムレを解消でき、感触を良いものとすることができると共に、衛生性をも維持できる。
【００１８】
図５および図６は、他の実施形態に係わるもので、嵩高部分１２を左右の足の大腿部１０に対応して個々に設けられるようにしたものである。
【００１９】
そのために、図１に示す嵩高部材部分１３を、さらに着座者の前後方向中央の分割線１７にて、左右２列に分割した構成の嵩高部材部分１８からなる嵩高部材１９ａ，１９ｂとしている。その左右２列の嵩高部材１９ａ，１９ｂを構成する各列の嵩高部材部分１８には、夫々に面状ファスナー１４がその裏面に形成されている。クッション部材５の大腿部座面１１にも、先の実施例と同様に、面状ファスナー１５が全面的に設けられている。この嵩高部材１９ａ，１９ｂもまた前述同様、嵩高部材部分１８の数は、１〜３個の範囲で変更、調整できる。
【００２０】
使用例の一例を示すと、左足が不自由で右足が正常な患者３が車椅子１に座った場合、図６に示すように、クッション部材５の大腿部座面１１に、左側列だけ嵩高部材１９ｂを備えさせることができる。
【００２１】
このように、大腿部座面１１の左側片方だけに嵩高部材１９ｂが配置され、もう片方の右側は嵩高部材１９ａを外した場合、着座者の左足大腿部のみ嵩高部材１９ｂで支えられ、右足大腿部の方は左足のように持ち上げ気味に支えられるようなことはないので、右足を動かすのに支障がない。
【００２２】
こうすると、不自由な方の左足は嵩高部材１９ｂにより安定に支えられ、ずれたりしないようにされ、一方正常な右足は、自由に動かせる。このため右足で床面を蹴り車椅子１を移動（前進）させたりする動作が可能になる。
【００２３】
このように片方の足が不自由で、もう片方が正常な場合に、随意に嵩高部材１９ａ，１９ｂを必要な足の方にだけ設け、他方は外すことができる椅子用マット４であれば、このような移動動作が可能になり、車椅子利用者にとって好都合である。
【００２４】
【発明の効果】
本発明（請求項１）によれば、車椅子の座面に敷かれる椅子用マットに、着座者の大腿部を臀部座面より少し持ち上げ気味に受ける着脱自在な嵩高部材を備えているので、この嵩高部材により臀部が前方へずれるのを阻止でき、車椅子利用者は安定かつ楽な姿勢を維持することができる。
【００２５】
また嵩高部材は、着座者の左右方向に分割された複数の着脱自在な嵩高部材部分よりなるものであるから、嵩高部材部分の数を変更することにより、患者の体格にあった幅、すなわち患者の大腿部の長さに合うよう嵩高部材の幅を調整することができ、嵩高部材が患者に与える違和感を最小限に抑えることができる。
【００２６】
また臀部にかかる体重を椅子用マットの臀部座面に付加したゲル状部材が受けるから、その変形により体重の分散性がよくなる。
【００２７】
また本発明（請求項２）によれば、嵩高部材を左右大腿部座面ごとに分割し、それぞれ左右大腿部を単独で支える構造とすることができる。かかる構造は、一方の足のみが不自由な場合に有効である。すなわち正常な足の大腿部の嵩高部材部分を外し、この足の運動をしやすくすることができ、他方の不自由な足の大腿部を嵩高部材で支えるのである。このような体の不自由さの程度に応じてより良い使い勝手性を得ることができる。
【図面の簡単な説明】
【図１】本発明の実施形態に係る椅子用マットの斜視図である。
【図２】図１のＡ−Ａ断面図である。
【図３】椅子用マットの大腿部座面に着脱自在とされる嵩多部材の取り付けの様相を示す斜視図である。
【図４】本発明の椅子用マットを敷いた車椅子に着座した様相を示した斜視図である。
【図５】本発明の別の実施形態に係る椅子用マットの斜視図である。
【図６】左片側にのみ嵩高部材を備えた場合の椅子マットの斜視図である。
【符号の説明】
１　車椅子
２　座面
３　着座者
４　椅子用マット
５　クッション部材
７　臀部
８　臀部座面
９　ゲル状部材
１０　大腿部
１１　大腿部座面
１２，１９ａ，１９ｂ　嵩高部材
１３，１８　嵩高部材部分
１６　左右方向の分割線
１７　前後方向の分割線
Ｄ　前後方向の幅[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a chair mat useful in a chair, particularly a wheelchair.
[0002]
[Prior art]
When a patient with a disability moves in a wheelchair, the body is likely to shift forward due to vibrations, resulting in an unstable posture, and the sacrum of the patient may be pressed against the seating surface and cause a pressure sore. Conventionally, in order to solve such inconvenience, a mat is laid on the seat surface, and a thick portion or a reinforcement material is placed on the front surface of the mat, that is, the seat surface in contact with the thigh, so that the buttocks do not shift forward. Some have a structure (JP-A-11-309047, JP-A-2002-85207).
[0003]
[Problems to be solved by the invention]
In the above-mentioned publication, the thick portion or the height increasing material arranged on the thigh seating surface prevents the buttocks of the patient who lifts the thigh and sits down, and has the effect of maintaining a stable posture. However, since the width in the front-back direction is constant, the width cannot be adjusted according to the size of the patient's physique. That is, in the case of a large-sized patient, the buttocks may hit the thickened portion or the augment, causing discomfort or even promoting the development of pressure sores, contrary to the intended purpose.
[0004]
The present invention has been made in view of such circumstances, and has a structure in which the thickness of the thick portion or the heightening material (hereinafter, referred to as a bulky member in the present invention) can be arbitrarily changed in the front-rear direction. An object of the present invention is to provide a chair mat for minimizing discomfort of a patient due to the member and distributing the weight of the patient to the buttocks by burying a gel-like member in the buttocks seating surface.
[0005]
[Means for Solving the Problems]
The present invention (Claim 1) provides a flat cushion member laid on a seat surface of a chair, a gel member buried in a buttocks seat surface of the cushion member, and a thigh seat surface of the cushion member. A bulky member which is detachably attached and which makes the thigh seat surface higher than the buttocks seat surface, wherein the bulky member is divided into a plurality of bulky member portions divided by a dividing line in a left-right direction of a seated person. The width of the bulky member in the front-rear direction can be changed by arbitrarily changing the number of the bulky member portions.
[0006]
In such a configuration, the bulky member is divided into a plurality of bulky member portions, and the width thereof is adjusted according to the physique of the patient, specifically, according to the length of the thigh of the patient on the seat surface, and the cushion member Attached to the thigh seat. In addition, the weight applied to the buttocks is efficiently dispersed by the gel member embedded in the buttocks seating surface of the cushion member.
[0007]
In the present invention (Claim 2), the bulky member is divided by a dividing line at the center in the front-rear direction of the seated person, and includes a bulky member portion corresponding to the seating surfaces of the left and right thighs.
[0008]
In such a configuration, the bulky member portions can be individually attached to the left and right thighs. For example, a patient who is disabled on only one leg may perform an operation of moving the wheelchair forward with one normal foot while sitting on a wheelchair, but such a motion may require a normal thigh seating surface of the foot. It is desirable that no bulky member portion exists. In this case, a bulky member portion is present on the thigh seat surface of the other inconvenient foot to suppress body displacement and to maintain a normal posture.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0010]
1 to 4, reference numeral 1 denotes a wheelchair, and 2 denotes a seat surface of the wheelchair. Reference numeral 3 denotes a person or a patient with a physical disability sitting on the wheelchair 1, and reference numeral 4 denotes a chair mat placed on the seating surface 2 of the wheelchair 1 on which the patient 3 sits.
[0011]
As shown in FIG. 1, the chair mat 4 has a planar cushion member 5 laid on the seating surface 2. As the cushion member 5, a cushioning material such as a polyurethane foam having a thickness of about 3 cm can be used. A non-slip sheet 6 is attached to the entire bottom surface of the cushion member 5 so as not to shift when laid on the seat surface. As the non-slip sheet 6, a non-slip member in which a nylon woven fabric is impregnated with polyurethane can be used.
[0012]
In the cushion member 5, a rectangular sheet-like auxiliary cushion material having a thickness of about 1 cm formed of a gel-like member 9 made of polyethylene gel or the like is embedded in a buttocks seating surface 8 where the buttocks 7 of the patient 3 abut. With a double structure, the cushioning property is enhanced, and at the same time, the weight of the patient applied to the buttocks 7 is dispersed to improve the stability of the posture and the sitting comfort.
[0013]
A front portion of the cushion member 5 is a thigh seat surface 11 for receiving the thigh portion 10 of the patient 3 sitting thereon, and a bulky member 12 that makes the thigh seat surface 11 higher than the buttocks seat surface 8 is arranged here. Is established. The bulky member 12 is composed of a plurality of, in this embodiment, three elongated rectangular member-shaped bulky member portions 13. In this way, the thigh 10 of the patient 3 sitting is slightly lifted by the bulky member 12, so that the buttocks 7 of the seated patient 3 do not shift forward, and the user can continue to sit in a stable posture.
[0014]
Of these bulky member portions 13, the bulky member portion 13 located at the boundary with the buttocks seating surface 8 is formed as a bulky member portion having a right-angled triangular cross section that is inclined so as to become lower toward the buttocks seating surface 8. The thigh seating surface 11 and the lower buttocks seating surface 8 are connected by a gentle slope so that no step is formed. The cushion member 5 in which the gel member 9 is embedded is entirely covered with a cover sheet 20. As the cover sheet 20, a sheet in which a urethane coating is applied to a polyester woven fabric can be used, and the cover sheet 20 is impermeable to prevent oozing of the gel member 9.
[0015]
Each of the plurality of bulky member portions 13 has a planar fastener 14 formed on the back surface thereof. Like the cushion member 5, each bulky member portion 13 is entirely covered with a cover sheet 21 in which a urethane coating is applied to a polyester woven fabric. On the other hand, a planar fastener 15 is also formed on the surface of the cushion member 5 on the side of the thigh seat surface 11. Accordingly, each of the bulky member portions 13 can be freely attached to and fixed to or removed from the thigh seating surface 11 with the planar fasteners 14 and 15. The planar fasteners 14 and 15 have hooks on the back side of the bulky member portion 13 and loop portions on the front side of the thigh seating surface 11. Since the loop portion has a softer feel, this surface is arranged on the surface of the thigh seat surface 11 with which the body contacts.
[0016]
As described above, since the individual bulky member portions 13 can be detachably attached to the thigh seat surface 11 of the cushion member 5 by the planar fasteners 14 and 15, the number of the attached members can be changed. it can. Therefore, the width D of the bulky member 12 in the front-rear direction can be freely adjusted by the number of attached members. As a result, the bulky member 12 that matches the length of the thigh 10 of the occupant can be obtained, so that the thigh 10 of the occupant can be fitted to the bulky member 12 and received with a good feel even when the physique is different. It reduces discomfort and discomfort, making it easy to sit for a long time.
[0017]
When a plurality of bulky member portions 13 are attached, the plurality of grooves 16 (partition lines) formed between adjacent bulky member portions 13 have a ventilation function. Even if the thigh portion 10 is received in close contact with the bulky portion 12, stuffiness can be eliminated at this portion, the feel can be improved, and hygiene can be maintained.
[0018]
FIGS. 5 and 6 relate to another embodiment, in which the bulky portions 12 are individually provided corresponding to the thighs 10 of the right and left feet.
[0019]
For this purpose, the bulky member portion 13 shown in FIG. 1 is further made up of bulky member portions 18a and 19b, which are divided into two rows on the left and right sides by a dividing line 17 at the center in the front-rear direction of the seated person. A planar fastener 14 is formed on the back surface of each of the bulky member portions 18 of each row constituting the two rows of bulky members 19a and 19b. A planar fastener 15 is also provided on the entire thigh seating surface 11 of the cushion member 5 as in the previous embodiment. In the bulk members 19a and 19b, the number of the bulk members 18 can be changed and adjusted in the range of 1 to 3 as described above.
[0020]
As an example of use, when a patient 3 with a disabled left foot and a normal right foot sits in a wheelchair 1, as shown in FIG. A member 19b can be provided.
[0021]
In this way, when the bulky member 19b is arranged only on one left side of the thigh seating surface 11, and the other right side is removed with the bulky member 19a, only the left thigh of the seated person is supported by the bulky member 19b, The right foot and thigh are not lifted like the left foot and are not supported, so there is no problem in moving the right foot.
[0022]
In this way, the inconvenient left foot is stably supported by the bulky member 19b so as not to shift, while the normal right foot can move freely. Therefore, an operation of kicking the floor with the right foot and moving (moving forward) the wheelchair 1 becomes possible.
[0023]
In this way, if one leg is inconvenient and the other is normal, the bulky members 19a and 19b are optionally provided only on the necessary legs, and the other is a chair mat 4 that can be removed. Such a moving operation becomes possible, which is convenient for a wheelchair user.
[0024]
【The invention's effect】
According to the present invention (claim 1), since the chair mat laid on the seating surface of the wheelchair is provided with the detachable bulky member that slightly lifts the thigh of the occupant from the buttocks seating surface and receives it slightly, The bulky member can prevent the buttocks from shifting forward, and the wheelchair user can maintain a stable and comfortable posture.
[0025]
Further, since the bulky member is composed of a plurality of detachable bulky members divided in the left-right direction of the seated person, by changing the number of the bulky members, a width suitable for the patient's physique, The width of the bulky member can be adjusted to match the length of the thigh of the patient, and the discomfort given to the patient by the bulky member can be minimized.
[0026]
In addition, since the weight of the buttocks is received by the gel-like member added to the buttocks of the chair mat, the deformation improves the dispersibility of the weight.
[0027]
Further, according to the present invention (claim 2), the bulky member can be divided for each of the left and right thigh seat surfaces, and each of the left and right thighs can be independently supported. Such a structure is effective when only one leg is inconvenient. That is, the bulky member of the thigh of a normal foot can be removed to facilitate the movement of the foot, and the thigh of the other inconvenient foot is supported by the bulky member. Better usability can be obtained according to the degree of inconvenience of the body.
[Brief description of the drawings]
FIG. 1 is a perspective view of a chair mat according to an embodiment of the present invention.
FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 3 is a perspective view showing an aspect of attaching a detachable bulky member to a thigh seat surface of a chair mat.
FIG. 4 is a perspective view showing an aspect of sitting on a wheelchair on which a chair mat of the present invention is laid.
FIG. 5 is a perspective view of a mat for a chair according to another embodiment of the present invention.
FIG. 6 is a perspective view of a chair mat provided with a bulky member only on one left side.
[Explanation of symbols]
Reference Signs List 1 wheelchair 2 seating surface 3 seated person 4 chair mat 5 cushion member 7 buttocks 8 buttocks seating surface 9 gel-like member 10 thighs 11 thighs seating surfaces 12, 19a, 19b bulky members 13, 18 bulky member portion 16 left and right Dividing line 17 in the front-back direction Dividing line D in the front-rear direction

Claims

A flat cushion member laid on a seat surface of a chair, a gel-like member buried in the buttocks seat surface of the cushion member, and a detachably attached to a thigh seat surface of the cushion member; A bulky member that makes the thigh seat surface higher than the surface, and the bulky member is composed of a plurality of bulky member portions divided by a dividing line in the left-right direction of the seated person, and the number of the bulky member portions The width of the bulky member in the front-rear direction can be changed by arbitrarily changing the width of the chair.

The chair mat according to claim 1, wherein the bulky member is divided by a dividing line at the center in the front-rear direction of the seated person, and includes a bulky member portion corresponding to the seating surfaces of the left and right thighs.