JP4292435B2

JP4292435B2 - Nursing bed with adjustable position

Info

Publication number: JP4292435B2
Application number: JP14631899A
Authority: JP
Inventors: 鉦男田中; 俊二川人; 亨嶋崎; 洋二本並
Original assignee: Aisin Seiki Co Ltd; Aisin Corp
Current assignee: Aisin Corp
Priority date: 1999-05-26
Filing date: 1999-05-26
Publication date: 2009-07-08
Anticipated expiration: 2019-05-26
Also published as: JP2000334002A

Description

【０００１】
【発明の属する技術分野】
本発明は、ベッドの技術分野に属し、特に使用者の体格にあわせて膝等の屈伸位置を調節することが可能な介護用ベッドの技術分野に属する。なお、本明細書中では、介護用ベッドとは、病人、老人、障害者等の使用者を介護するためのベッドだけに限定されるものではなく、膝曲げやリクライニング等の屈伸機能をもったベッドを広く指すものとする。
【０００２】
【従来の技術】
従来の屈伸位置調節可能な介護用ベッドとしては、たとえば、特開平９−８４８３６号公報（従来技術１）、特開平９−３１３５４４号公報（従来技術２）および実開平８−１０５９号公報（従来技術３）に開示されたものがある。そして、これらの従来技術では、所定の曲率で湾曲することができる湾曲ボトム部材を屈伸部に使用していた。
【０００３】
すなわち、従来技術１および従来技術２では、長手方向（使用者の身長方向）に延在する第一フレームおよび第二フレームを長手方向に互いに連結するのに、ピボット周りに屈伸可能なヒンジ部材を使用していた。そして、使用者の体格に合わせてベッドのボトム（上面部）のうち屈伸する部分の位置を調整するために、従来技術１では、ヒンジ部材と両フレームとの結合位置は、長手方向に調整可能に設計されていた。一方、従来技術２では、長手方向に所定間隔をおいて二つのピボットをもつヒンジ部材を採用して、両ピボットのうち一方を固定することにより、屈伸する部分の位置を長手方向に二段階で調節することができるようになっていた。
【０００４】
さらに、ヒンジ部材を覆い床面（ボトムの上面）の一部を形成するボトム部材には、所定の曲率で湾曲することができる湾曲ボトム部材が使用されていた。また、屈曲した状態で湾曲ボトム部材を支えるヒンジ部材は、湾曲ボトム部材の底面に沿って曲面を形成することができるように、ピボットに近い部分の上面が適当な曲率をもって形成されていた。
【０００５】
ここで、湾曲ボトム部材は、従来技術３によれば、複数の逆台形の短冊状ボトム部材がその上面で互いに屈曲可能につながって構成されている。すなわち、複数の短冊状ボトム部材は、上面側で互いに一体的につながっており、下面側では適当なギャップを空けている。それゆえ、短冊状ボトム部材が上に凸に湾曲した際に、短冊状ボトム部材の上面側の連結部分が撓むともに、下面側ではギャップがつぶれて湾曲する曲率の範囲が適正に限定されている。すなわち、各従来技術に使用される湾曲ボトム部材は、中空状の熱可塑性樹脂からなり可撓性のある一体部材である。
【０００６】
なお、従来技術１および従来技術２においては、ヒンジ部材の延伸時にこのような湾曲ボトム部材が逆方向に撓んでしまわないようにする必要がある。たとえば、湾曲ボトム部材のギャップ側に逆湾曲規制部材を設けるとか、湾曲ボトム部材が配設されているヒンジ部材の脇に直線状の支持部材を設けておくなどの対策が必須である。
【０００７】
【発明が解決しようとする課題】
しかしながら、前述の各従来技術の湾曲ボトム部材では、複数の短冊状のボトムが上面側で一体的につながっているので断面形状が大きく、下面側では適正なギャップが各短冊状ボトムの間に形成されていなければならない。それゆえ、湾曲ボトム部材の寸法が大きく形状が複雑であることから、湾曲ボトム部材を製造するための成形型も大きく複雑になり、成形型の製造コストがかなりかかってしまうので、いきおい湾曲ボトム部材の価格も高くついてしまう。また、このような湾曲ボトム部材を成型するためには、湾曲ボトム部材の長手方向の幅寸法が大きいので押し出し成形によって製造するのは困難であり、射出成形によって製造せざるを得なかった。その結果、湾曲ボトム部材の製造費用がなお高くなり、湾曲ボトム部材の価格の高騰が、屈伸位置調節可能な介護用ベッドを安価に提供する上での妨げになっていた。
【０００８】
そこで本発明は、より安価な屈伸位置調節可能な介護用ベッドを提供することを解決すべき課題とする。
【０００９】
【課題を解決するための手段】
本発明は、長手方向に延在する第一フレームおよび第二フレームと、両該フレームを長手方向に互いに連結し屈伸可能であるとともに両該フレームとの結合位置が長手方向に調整可能であるヒンジ部材と、両該フレームおよび該ヒンジ部材を覆い床面を形成するボトム部材とを有する屈伸位置調節可能な介護用ベッドにおいて、前記ボトム部材のうち前記ヒンジ部材を覆っているものは、互いに別体で複数の短冊状ボトム部材であることを特徴とする屈伸位置調節可能な介護用ベッドである。
【００１０】
すなわち、本発明の屈伸位置調節可能な介護用ベッドでは、前述の各従来技術の湾曲ボトム部材に当たる部分は、互いに別体の複数の短冊状ボトム部材から構成されている。それゆえ、各短冊状ボトム部材は、別体に成型されるので、一体成型された大きな湾曲ボトム部材を成型する場合よりも、本発明での短冊状ボトム部材を成型する場合の方が、成形型がずっと小さくてすむ。その結果、成形型の制作費用が従来技術よりもずっと安価になり、一つのベッドに必要な数の短冊状ボトム部材をより安価に製造することが可能になり、ひいてはより安価に屈伸位置調節可能な介護用ベッドを提供することができるようになる。
【００１１】
この場合において、複数の短冊状ボトム部材は互いに同一な形状であることが望ましい。このように各短冊状ボトム部材が同一形状であれば、これらは単一の規格品となるので複数の成形型を用意する必要がなくなり、よりいっそう安価に短冊状ボトム部材を製造することができるようになる。
また、本発明の屈伸位置調節可能な介護用ベッドでは、ボトム部材に可撓性が要求されず、膝部分等の屈伸部を曲げる際にもボトム部材の大きな変形はない。すなわち、本発明では、ボトム部材の変形がほとんどないので、長期間にわたって使用してもボトム部材にひびが入ったりすることが防止されており、ボトム部材の寿命が長く長期間にわたって維持費が低く抑えられている。
【００１２】
したがって、本発明によれば、屈伸位置調節可能な介護用ベッドをより安価に提供することができるばかりではなく、同ベッドの維持費をも減らすことができるという効果がある。
【００１３】
【発明の実施の形態】
本発明では、ヒンジ部材を覆っているボトム部材は互いに別体で複数の短冊状ボトム部材であることを特徴としているが、これらの複数の短冊状ボトム部材は同一形状であってもよく、さらに、他の部分を覆っているボトム部材もこれらと同じ短冊状ボトム部材であってもよい。このような構成にすれば、全てのボトム部材が単一の規格品からなるので、複数の成形型を用意する必要がなくなり、よりいっそう安価に屈伸位置調節可能な介護用ベッドを提供することができるようになる。さらに、各短冊状ボトム部材の間に適正な隙間を設ければ、これらの隙間を通してボトムの上下間で通気性が良好になり、ボトムの上に載せられたマットや布団の湿気が抜けやすくなるので、本発明のベッドの使用感がより快適になる。
【００１４】
ここで、前記短冊状ボトム部材は、断面形状が一定の押し出し成型品からなることが望ましい。このような構成にすれば、短冊状ボトム部材は安価な熱可塑性樹脂等を押し出し成形することにより、よりいっそう安価に製造することができるので、屈伸位置調節可能な介護用ベッドをよりいっそう安価に提供することが可能になる。
【００１５】
さらに、前記ヒンジ部材は、各前記短冊状ボトム部材毎に、上方に突出したＴ字状のヘッドをもつボルトまたはピンを少なくとも左右一対もち、各該短冊状ボトム部材は、該ヘッドと係合する断面Ｔ字状の係合溝をもつ構成とすると、なお望ましい。すなわち、押し出し成型品からなる短冊状ボトム部材の係合溝に左右一対のボルトまたはピンなどの係止部材のヘッドが挿入されるように、ベッドの横方向から短冊状ボトム部材を差し込むだけで、短冊状ボトム部材はベッドに固定される。すると、本発明のベッドへの各短冊状ボトム部材の挿置がきわめて容易になる。また、ボルトやピンのような係止部材は、取付け取り外しが容易であるから、その位置を適正に配置し直すことが簡単になり、屈伸位置の調節がより簡単になるという効果がある。
【００１６】
また、前記短冊状ボトム部材は、左右に連通して形成された肉抜き孔をもつようにすると、なお望ましい。なぜならば、このような構成の短冊状ボトム部材であれば、肉抜き孔の分だけ材料費が節減されるとともに重量も軽減され、さらに保温性も向上するからである。
なお、以上は短冊状ボトム部材の特徴に注目して説明したが、短冊状ボトム部材を採用することにより、ヒンジ部材の構成も従来技術とは変えてより安価に製造することができるようになる。すなわち、本発明のベッドにおいて、前記ヒンジ部材のうち、各前記短冊状ボトム部材を保持し前記第一フレームまたは前記第二フレームに結合される連結部分は、直線状部材から構成されるようにすると、なお良い。
【００１７】
なぜならば、湾曲ボトム部材を採用せず短冊状ボトム部材を採用しているので、従来技術１や従来技術２のように連結部分が曲線で形成された部材からなっていると不都合である。すなわち、ヒンジ部材が屈曲しているときは適当な湾曲をもってボトムが形成されるのでよいが、逆にヒンジ部材が伸展しているときには、短冊状ボトム部材がヒンジ部材の連結部分に沿って落ち込んでしまったりすると不都合である。それゆえ、ヒンジ部材の両連結部分が直線状部材から形成されていれば、このような機能上の不都合がなくなる。そればかりではなく、ヒンジ部材の製造費用が節減され、なおいっそうのコストダウンが可能になるという効果がある。
【００１８】
【実施例】
以下、本発明の屈伸位置調節可能な介護用ベッドの実施例を図面を参照して示し、当業者が容易に実施できるよう具体的に説明する。
［実施例１］
（実施例１の構成）
本発明の実施例１としての屈伸位置調節可能な介護用ベッドは、図１および図２に示すように、脚９３に支持されたヘッドボード９１およびフットボード９２と、両ボードの間に配設された左右一対のサイドビーム５とをもつ。両サイドビーム５の間には、長手方向に延在する第一フレーム１および第二フレーム２と、両フレーム１，２を長手方向に互いに連結するヒンジ部材３と、第二フレーム２に屈伸可能に連結された背当てフレーム４とが配設されている。そして、第一フレーム１および第二フレーム２とヒンジ部材３と背当てフレーム４との上には、これらを覆い床面（ボトムの上面）を形成するボトム部材６，６’，７が、複数のボルト４０によって装着されている。
【００１９】
これらのボトム部材６，６’，７のうち、ボトム部材６，６’はそれぞれ互いに同一規格で細身の短冊状ボトム部材であり、ボトム部材７はそれぞれ互いに同一規格で幅広のボトム部材である。ボトム部材７の（ベッドの長手方向の）幅は、短冊状ボトム部材６，６’の幅の四倍程度である。また、各ボルト４０は、互いに同一規格のボルトであり、各フレーム１，２，４およびヒンジ部材３の上面に所定距離だけヘッドを出して鉛直に立てられている。
【００２０】
ここで、ヒンジ部材３は、長手方向中央部のピボット部３３で屈伸可能であるとともに、ピボット部３３で互いに連結された二つの連結部分において、第一フレーム１および第二フレーム２との結合位置が長手方向に調整可能である。また、ヒンジ部材３のうち、各短冊状ボトム部材６，６’を保持しそれぞれ第一フレーム１および第二フレーム２に結合される連結部分３１，３２は、直線状部材から構成されている。
【００２１】
各フレーム１，２，４およびヒンジ部材３の下には、サイドビーム５とともに各フレーム１，２，４およびヒンジ部材３を上下方向に平行移動させる昇降機構８１が装置されている。また、図３に示すように、各フレーム１，２，４の下には、背当てフレーム４を立てることにより使用者の背を起こす背当て起倒機構８２が装置されている。さらに、図４に示すように、フレーム２，４およびヒンジ部材３の下には、背当て起倒機構８２と連動して使用者の膝を曲げてやや起こす膝立機構８３が装置されている。
【００２２】
ここで、使用者の大腿部が長い場合には、図３のＡ部を図５（ａ）に拡大して示すように、使用者の体格に合わせて、中央部のピボット部３３で折れ曲がるヒンジ部材３が両フレーム１，２に対し足下方向（図中左側）へずらして固定される。逆に、使用者の大腿部が短い場合には、図４のＢ部を図５（ｂ）に拡大して示すように、使用者の体格に合わせて、ヒンジ部材３が両フレーム１，２に対し腰部方向（図中右側）へずらして固定される。
【００２３】
両フレーム１，２に対する長手方向の位置をずらしてヒンジ部材３を両フレーム１，２に固定するには、先ず、使用者の膝関節の真下の位置にヒンジ部材３のピボット部３３がくるように、両フレーム１，２に対するヒンジ部材３の位置を調整する。ここで、ヒンジ部材３の直線状部材３１，３２の側面には、左右方向に貫通して複数組の固定ピン孔３０が形成されており、一方、両フレーム１，２の側面には、それぞれ対応する一組の固定ピン孔１０，２０が形成されている。それゆえ、ヒンジ部材３をずらして位置調整する際には、両フレーム１，２に形成されている固定ピン孔１０，２０と、ヒンジ部材３の両直線状部材３１，３２に形成されている複数組の固定ピン孔３０のうちいずれかとが対面するように、位置調整する。すなわち、両フレーム１，２に対するヒンジ部材３の位置調整は、固定ピン孔３０の形成されているピッチで段階的に行うことができる。
【００２４】
そして、両フレーム１，２およびヒンジ部材３の側面に左右方向に貫通して開けられた複数の固定ピン孔３０に固定ピン（図略）を挿入し、ヒンジ部材３の直線状の直線状部材３１，３２と両フレーム１，２とを結合する。この際、短冊状ボトム部材６’のうち、直線状部材３１，３２と両フレーム１，２との結合の邪魔になるものは、左右いずれかの方向に引き抜いてヒンジ部材３から取り外しておく。
【００２５】
すると、ヒンジ部材３を両フレーム１，２に対してずらしたことにより、ヒンジ部材３の連結部分３１，３２のうち一方に開いた部分が生じる。そこで、直線状部材３１，３２のうち短冊状ボトム部材６’を取り外した方と反対側へ、すなわち、ヒンジ部材３をずらした方とは反対側の直線状部材（３１または３２）へ取り外した短冊状ボトム部材６’を移設する。その結果、移設された短冊状ボトム部材６’はベッドのボトムを形成するに至るので、移設された短冊状ボトム部材６’をボルト４０により固定する。
【００２６】
なお、ヒンジ部材３の一方の連結部分３１と第一フレーム１とは、断面形状が互いに係合してスライド可能になっている。同様に、ヒンジ部材３の他方の連結部分３２と第二フレーム２の連結部分２１とは、断面形状が互いに係合してスライド可能になっている。
また前述のように、本実施例では、ヒンジ部材３の側面に複数組の固定ピン孔を形成し、両フレーム１，２のそれぞれの側面に対応する一組の固定ピン孔を形成している。しかし、これとは逆に、ヒンジ部材３の直線状部材３１，３２の側面にそれぞれ一組の固定ピン孔を形成し、両フレーム１，２のそれぞれの側面に対応する複数組の固定ピン孔を形成した構成としても良い。あるいは、ヒンジ部材３および両フレームのいずれも側面にも複数組の固定ピン孔を形成した構成としても良い。
【００２７】
図５（ａ）〜（ｂ）に示すように、ヒンジ部材３を覆っている五本の短冊状ボトム部材６，６’は、互いに別体で同一形状の同一規格品であり、互いに隣り合う短冊状ボトム部材６，６’の間には、同じだけの適当な間隔が開けてある。すなわち、各短冊状ボトム部材６，６’は、長手方向に所定のピッチで等間隔に配設されている。ヒンジ部材３には、各短冊状ボトム部材６，６’毎に、上方に所定の距離だけ突出したＴ字状のヘッドをもつボルト４０が左右一対（図２参照）ねじ込まれている。
【００２８】
ここで、短冊状ボトム部材６，６’は、図６に示すように、ポリプロピレン樹脂（ＰＰ）を材料とする断面形状が一定の押し出し成型品からなり、短冊状ボトム部材６，６’の左右両端の開口部は、図示しないキャップによって封止されている。そして、各短冊状ボトム部材６，６’は、前述の各ボルト４０のＴ字状のヘッドと係合する下方に開口した断面Ｔ字状の係合溝６１を中央にもち、左右に連通して形成された一対の肉抜き孔６０をもつ軸対称な断面形状をしている。また、製造が容易で作業者の手指やマットを傷つけないようにするために、短冊状ボトム部材６，６’の角部には適正なアールが付けられており、応力集中を防ぐために隅部にも適正なアールが付けられている。なお、短冊状ボトム部材６，６’の各部の肉厚はおおむね一定に形成されている。そして、係合溝６１を形成する部分の最上部と上面を形成する天井部分とは、一対の肉抜き孔６０を分断する壁肉で接合されており、上下方向の圧縮強度が高められている。
【００２９】
なお、幅広のボトム部材７も、使用者の身長方向の幅が広いという点を除き、おおむね前述の短冊状ボトム部材６，６’と同様の材料で同様に構成されている。それゆえ、本実施例のボトム部材６，６’，７は、短冊状ボトム部材６，６’とボトム部材７との二種類の押し出し成型品からなり、これらの製造に必要な押し出し成形型には小型の二種類が要求されるにすぎない。
【００３０】
（実施例１の作用効果）
本実施例の屈伸位置調節可能な介護用ベッドは、以上のように構成されているので、以下のような大きく分けて三つの作用効果を発揮する。
第一に、本実施例によれば、より安価に屈伸位置調節可能な介護用ベッドを提供することが可能になるという効果がある。
【００３１】
すなわち、本実施例の屈伸位置調節可能な介護用ベッドでは、前述の各従来技術の湾曲ボトム部材に当たる部分は、前述のように、互いに別体で同一形状の複数の短冊状ボトム部材６，６’から構成されている。それゆえ、各短冊状ボトム部材６，６’は、互いに同一規格であるうえに別体に成型されるので、一体成型された大きな湾曲ボトム部材を成型するよりも、本実施例での複数の細身の短冊状ボトム部材６，６’を成型するの方が、成形型がずっと小さくてすむ。
【００３２】
また、短冊状ボトム部材６，６’は、断面形状が一定の押し出し成型品からなるので、安価なポリプロピレン樹脂を押し出し成形することにより、短冊状ボトム部材６，６’をよりいっそう安価に製造することができる。さらに、短冊状ボトム部材６，６’は、左右に連通して形成された肉抜き孔６０をもつので、肉抜き孔６０の分だけ材料費が節減されるとともに重量も軽減され、そのうえ保温性も良い。
【００３３】
そればかりではなく、前述のように、ボトム部材６，６’，７は、短冊状ボトム部材６，６’とボトム部材７との二種類の押し出し成型品からなり、これらの製造に必要な押し出し成形型には小型の二種類が要求されるにすぎない。それゆえ、ボトム部材６，６’，７に必要な成形型の製造コストが安くすむので、ボトム部材６，６’，７をより安価に製造することができる。
【００３４】
したがって、本実施例によれば、成形型の制作費用が従来技術よりもずっと安価になり、一つのベッドに必要な数の短冊状ボトム部材６，６’，７をより安価に製造することができる。その結果、より安価に屈伸位置調節可能な介護用ベッドを提供することができるようになるという効果がある。
第二に、本実施例によれば、屈伸位置調節可能な介護用ベッドの維持費を減らすことができるという効果がある。
【００３５】
すなわち、ボトム部材６，６’，７に可撓性が要求されず、膝部分のヒンジ部材３を曲げる際にも短冊状ボトム部材６，６’の変形は要求されない。すると、ボトム部材６，６’，７の変形がほとんどないので、長期間にわたって使用してもボトム部材６，６’，７にひびが入ったりすることが防止されている。その結果、ボトム部材６，６’，７の寿命が長く、本実施例の屈伸位置調節可能な介護用ベッドでは、長期間にわたって維持費が低く抑えられる。
【００３６】
したがって、本実施例によれば、屈伸位置調節可能な介護用ベッドをより安価に提供することができるばかりではなく、同ベッドの維持費をも減らすことができるという効果がある。
第三に、本実施例の屈伸位置調節可能な介護用ベッドによれば、以上のように安価な構成でありながら、膝部分の屈伸位置の調節が容易であるという効果がある。
【００３７】
すなわち、ヒンジ部材３は、各短冊状ボトム部材６，６’毎に、上方に突出したＴ字状のヘッドをもつボルト４０を左右一対もち、各短冊状ボトム部材６，６’は、両ボルト４０のヘッドと係合する断面Ｔ字状の係合溝６１をもっている。すると、押し出し成型品からなる短冊状ボトム部材６，６’の係合溝６１に左右一対のボルト４０のヘッドが挿入されるように、ベッドの横方向から短冊状ボトム部材６，６’を差し込むだけで、短冊状ボトム部材６，６’はベッドに固定される。
【００３８】
より詳しく説明すると、図５（ａ）と図５（ｂ）とを互いに比較すると明らかなように、三つの短冊状ボトム部材６’を移動させることにより、両フレーム１，２に対してヒンジ部材３の長手方向の位置を移動させることができる。すなわち、ヒンジ部材３の連結部分３１，３２にボルト４０で係止されている短冊状ボトム部材６，６’のうち三つの短冊状ボトム部材６’を移動させることにより、最も大腿部の短い使用者にも最も大腿部の長い使用者にも、膝関節の曲げ位置にヒンジ部材３のピボット部３３を適合させることができる。当然のことながら、三つの短冊状ボトム部材６’のうち一つないし二つを移動させることにより、中間的な位置にヒンジ部材３のピボット部３３を適合させることもできる。したがって、ヒンジ部材３のピボット部３３の位置は、短冊状ボトム部材６’のピッチに対応する刻み幅で長手方向に調整可能である。
【００３９】
その結果、本実施例のベッドへの各短冊状ボトム部材６’の挿置と、使用者の体格に合わせたヒンジ部材３のピボット部３３の位置調整とが、きわめて容易になる。また、固定ピン孔１０，２０，３０に装置される固定ピンやボルト４０は取付け取り外しが容易であるから、それらの位置を適正に配置し直すことが簡単であり、屈伸位置の調節が容易であるという効果がある。
【００４０】
なお、以上は短冊状ボトム部材６，６’およびボトム部材７の特徴に注目して説明したが、これらを採用することにより、ヒンジ部材３の構成も従来技術とは変えてより安価に製造することができるようになる。すなわち、本実施例において、ヒンジ部材３の両連結部分３１，３２は、前述のように直線状部材から構成されているから、湾曲した部材から構成するよりも安価に製造することができるようになり、この点でも従来技術に比べてコストダウンができる。したがって、ヒンジ部材３の両連結部分３１，３２の製造コストに関しても、コストダウンができるという効果がある。
【００４１】
（実施例１の変形態様１）
本実施例の変形態様１として、短冊状ボトム部材６，６’の断面形状を、図７に示すようにより単純な形状に改めた屈伸位置調節可能な介護用ベッドの実施が可能である。本変形態様によれば、短冊状ボトム部材６，６’の製造コストをより削減することができるので、屈伸位置調節可能な介護用ベッドをさらに安価に提供できるという効果がある。
【００４２】
（実施例１の変形態様２）
本実施例の変形態様２として、図８に示すように、幅広のボトム部材７の使用を廃し、所定の間隔を開けて配設された同一規格の短冊状ボトム部材６だけでボトムの全ての部分が構成されている屈伸位置調節可能な介護用ベッドの実施が可能である。このような構成にすれば、全てのボトム部材が単一の規格品（短冊状ボトム部材６）からなるので、複数の成形型を用意する必要がなくなり、よりいっそう安価に屈伸位置調節可能な介護用ベッドを提供することができるようになる。さらに、各短冊状ボトム部材６の間に適正な隙間が設けられているので、これらの隙間を通してボトムの上下間で通気性が良好になり、ボトムの上に載せられたマットや布団の湿気が抜けやすくなる。したがって、本変形態様の屈伸位置調節可能な介護用ベッドによれば、製造コストがよりいっそう安くなるばかりではなく、使用感がより快適になるという効果がある。
【００４３】
【発明の効果】
以上詳述したように、本発明の屈伸位置調節可能な介護用ベッドによれば、湾曲ボトム部材を使用せず安価な短冊状ボトム部材６，６’を採用しているので、前述の各従来技術よりもより安価になるという効果がある。そればかりではなく、膝の屈曲部でもボトムが長持ちするので、維持費をも減らすことができるという効果もある。
【図面の簡単な説明】
【図１】実施例１としての介護用ベッドの全体構成を示す側面図
【図２】実施例１としての介護用ベッドの全体構成を示す平面図
【図３】実施例１での背当て起倒機構の作用を示す要部側面図
【図４】実施例１での膝立機構の作用を示す要部側面図
【図５】実施例１としての介護用ベッドの要部構成を示す組図
（ａ）大腿部を長く調整した状態での要部構成を示す側面図
（ｂ）大腿部を短く調整した状態での要部構成を示す側面図
【図６】実施例１での短冊状ボトム部材の断面形状を示す断面図
【図７】変形態様１での短冊状ボトム部材の断面形状を示す断面図
【図８】変形態様２としての介護用ベッドの全体構成を示す側断面図
【符号の説明】
１：第一フレーム１０：固定ピン孔
２：第二フレーム２０：固定ピン孔
２１：連結部分２２：直線部分２３，２４：ピボット部
３：ヒンジ部材３０：固定ピン孔
３１，３２：連結部分（直線状部材からなる）３３：ピボット部
４：背当てフレーム
４０：ボルト（Ｔ字状のヘッドをもつ）
５：サイドビーム
６，６’：短冊状ボトム部材（細身）７：短冊状ボトム部材（幅広）
８１：昇降機構８２：背当て起倒機構８３：膝立機構
９１：ヘッドボード９２：フットボード９３：脚
Ｍ：マットレス[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of beds, and particularly to the technical field of care beds that can adjust the bending position of a knee or the like in accordance with the physique of a user. In this specification, the nursing bed is not limited to a bed for nursing a user such as a sick person, an elderly person, or a disabled person, and has a bending and stretching function such as knee bending and reclining. Widely refer to the bed.
[0002]
[Prior art]
Examples of conventional nursing beds that can be bent and stretched are disclosed in Japanese Patent Laid-Open No. 9-84836 (Prior Art 1), Japanese Patent Laid-Open No. 9-31544 (Prior Art 2), and Japanese Utility Model Laid-Open No. 8-1059 (Prior Art). Some are disclosed in Technology 3). In these conventional techniques, a bent bottom member that can be bent with a predetermined curvature is used for the bending and extending portion.
[0003]
That is, in the prior art 1 and the prior art 2, the hinge member that can bend and stretch around the pivot is used to connect the first frame and the second frame extending in the longitudinal direction (the height direction of the user) to each other in the longitudinal direction. I was using it. And in order to adjust the position of the bent portion of the bottom (upper surface) of the bed according to the physique of the user, in the prior art 1, the coupling position of the hinge member and both frames can be adjusted in the longitudinal direction. Was designed to. On the other hand, in the prior art 2, a hinge member having two pivots at a predetermined interval in the longitudinal direction is employed, and by fixing one of the two pivots, the position of the bending and extending portion is determined in two stages in the longitudinal direction. I was able to adjust it.
[0004]
Furthermore, a curved bottom member that can be curved with a predetermined curvature has been used for the bottom member that covers the hinge member and forms a part of the floor surface (the upper surface of the bottom). In addition, the hinge member that supports the curved bottom member in a bent state has an upper surface with an appropriate curvature near the pivot so that a curved surface can be formed along the bottom surface of the curved bottom member.
[0005]
Here, according to the prior art 3, the curved bottom member is constituted by a plurality of inverted trapezoidal strip-shaped bottom members connected to each other so as to be bendable on the upper surface. That is, the plurality of strip-shaped bottom members are integrally connected to each other on the upper surface side, and an appropriate gap is formed on the lower surface side. Therefore, when the strip-shaped bottom member is convexly curved upward, the connecting portion on the upper surface side of the strip-shaped bottom member bends, and the range of curvature where the gap is collapsed and curved on the lower surface side is appropriately limited. Yes. That is, the curved bottom member used in each conventional technique is a flexible integral member made of a hollow thermoplastic resin.
[0006]
In the prior art 1 and the prior art 2, it is necessary to prevent the curved bottom member from bending in the reverse direction when the hinge member is extended. For example, it is necessary to take measures such as providing a reverse-curve regulating member on the gap side of the curved bottom member, or providing a linear support member beside the hinge member on which the curved bottom member is disposed.
[0007]
[Problems to be solved by the invention]
However, in each of the above-mentioned curved bottom members of the prior art, a plurality of strip-shaped bottoms are integrally connected on the upper surface side, so that the cross-sectional shape is large, and an appropriate gap is formed between the strip-shaped bottoms on the lower surface side. Must have been. Therefore, since the size of the curved bottom member is large and the shape is complicated, the mold for producing the curved bottom member is also greatly complicated and the manufacturing cost of the mold is considerably increased. The price will be too high. Further, in order to mold such a curved bottom member, it is difficult to manufacture by the extrusion molding because the width dimension in the longitudinal direction of the curved bottom member is large, and it has been necessary to manufacture by the injection molding. As a result, the manufacturing cost of the curved bottom member is still high, and the increase in the price of the curved bottom member has been an obstacle to providing a care bed that can be bent and extended at a low cost.
[0008]
Then, this invention makes it the problem which should be solved to provide the bed for nursing care which can adjust a bending / extension position cheaper.
[0009]
[Means for Solving the Problems]
The present invention relates to a first frame and a second frame that extend in the longitudinal direction, and a hinge that can be bent and stretched by connecting the frames to each other in the longitudinal direction, and the coupling position between the frames can be adjusted in the longitudinal direction. In a nursing bed having a member and a bottom member that covers both the frame and the hinge member and forms a floor surface, the bed member that covers the hinge member among the bottom members is separate from each other. The bed is a nursing care bed that can be bent and stretched, and has a plurality of strip-shaped bottom members.
[0010]
That is, in the nursing bed with adjustable bending and extending positions according to the present invention, the portion corresponding to the curved bottom member of each of the above-described prior arts is composed of a plurality of strip-shaped bottom members that are separate from each other. Therefore, since each strip-shaped bottom member is molded separately, it is molded when the strip-shaped bottom member according to the present invention is molded rather than when a large curved bottom member is integrally molded. The mold is much smaller. As a result, the production cost of the mold is much lower than that of the conventional technology, and the number of strip-shaped bottom members required for one bed can be manufactured at a lower cost, and the bending position can be adjusted at a lower cost. A nursing bed can be provided.
[0011]
In this case, it is desirable that the plurality of strip-shaped bottom members have the same shape. Thus, if each strip-shaped bottom member has the same shape, these become a single standard product, so it is not necessary to prepare a plurality of molds, and the strip-shaped bottom member can be manufactured at a lower cost. It becomes like this.
Moreover, in the nursing bed in which the bending position of the present invention can be adjusted, the bottom member is not required to be flexible, and the bottom member is not greatly deformed even when the bending portion such as the knee portion is bent. That is, in the present invention, since there is almost no deformation of the bottom member, the bottom member is prevented from cracking even if used for a long period of time, and the bottom member has a long life and a low maintenance cost for a long period of time. It is suppressed.
[0012]
Therefore, according to the present invention, it is possible not only to provide a care bed capable of adjusting the bending and extending positions at lower cost, but also to reduce the maintenance cost of the bed.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is characterized in that the bottom member covering the hinge member is a plurality of strip-shaped bottom members that are separate from each other, but the plurality of strip-shaped bottom members may have the same shape, The bottom member covering the other part may also be the same strip-shaped bottom member. With such a configuration, since all the bottom members are made of a single standard product, there is no need to prepare a plurality of molds, and it is possible to provide a care bed that can be bent and extended at a lower cost. become able to. Furthermore, if an appropriate gap is provided between the strip-shaped bottom members, the air permeability between the upper and lower sides of the bottom is improved through these gaps, and the moisture of the mat or the futon placed on the bottom is easily released. Therefore, the feeling of use of the bed of the present invention becomes more comfortable.
[0014]
Here, it is preferable that the strip-shaped bottom member is made of an extruded product having a constant cross-sectional shape. With such a configuration, the strip-shaped bottom member can be manufactured at a lower cost by extruding an inexpensive thermoplastic resin or the like, so that a care bed that can be adjusted in bending and extending positions can be further reduced. It becomes possible to provide.
[0015]
Further, the hinge member has at least a pair of bolts or pins each having a T-shaped head protruding upward for each of the strip-shaped bottom members, and each of the strip-shaped bottom members engages with the head. It is still desirable to have an engagement groove with a T-shaped cross section. That is, just by inserting the strip-shaped bottom member from the lateral direction of the bed so that the head of the locking member such as a pair of left and right bolts or pins is inserted into the engagement groove of the strip-shaped bottom member made of an extruded product, The strip-shaped bottom member is fixed to the bed. Then, it becomes very easy to insert each strip-shaped bottom member into the bed of the present invention. Further, since the locking members such as bolts and pins can be easily attached and detached, it is easy to rearrange their positions appropriately, and the adjustment of the bending and extending positions is easier.
[0016]
The strip-shaped bottom member preferably has a lightening hole formed in communication with the left and right sides. This is because with the strip-shaped bottom member having such a configuration, the material cost is reduced by the amount corresponding to the lightening hole, the weight is reduced, and the heat retaining property is further improved.
The above description has been made by paying attention to the characteristics of the strip-shaped bottom member. However, by adopting the strip-shaped bottom member, the configuration of the hinge member can be manufactured at a lower cost as compared with the prior art. . That is, in the bed of the present invention, among the hinge members, the connecting portion that holds each strip-shaped bottom member and is coupled to the first frame or the second frame is configured by a linear member. Still better.
[0017]
This is because the strip-shaped bottom member is employed instead of the curved bottom member, and it is inconvenient if the connecting portion is formed of a curved line as in the prior art 1 and the prior art 2. That is, when the hinge member is bent, the bottom may be formed with an appropriate curve. Conversely, when the hinge member is extended, the strip-shaped bottom member falls along the connecting portion of the hinge member. Doing so is inconvenient. Therefore, if both connecting portions of the hinge member are formed of linear members, such functional inconvenience is eliminated. In addition, the manufacturing cost of the hinge member is reduced, and the cost can be further reduced.
[0018]
【Example】
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a care bed capable of adjusting a bending / extending position according to the present invention will be described with reference to the drawings, and will be specifically described so that those skilled in the art can easily implement the bed.
[Example 1]
(Configuration of Example 1)
As shown in FIGS. 1 and 2, the nursing bed capable of adjusting the bending / extending position as the first embodiment of the present invention is disposed between the headboard 91 and the footboard 92 supported by the legs 93 and the boards. And a pair of left and right side beams 5. Between the side beams 5, the first frame 1 and the second frame 2 extending in the longitudinal direction, the hinge member 3 that couples the frames 1 and 2 in the longitudinal direction, and the second frame 2 can be bent and stretched. And a back support frame 4 connected to each other. On the first frame 1 and the second frame 2, the hinge member 3, and the backrest frame 4, there are a plurality of bottom members 6, 6 ', 7 that cover these to form a floor surface (upper surface of the bottom). The bolt 40 is attached.
[0019]
Of these bottom members 6, 6 'and 7, the bottom members 6 and 6' are narrow strip-shaped bottom members having the same standard, and the bottom members 7 are wide bottom members having the same standard. The width of the bottom member 7 (in the longitudinal direction of the bed) is about four times the width of the strip-shaped bottom members 6 and 6 ′. The bolts 40 are bolts of the same standard, and stand vertically with a head protruding from the top surfaces of the frames 1, 2, 4 and the hinge member 3 by a predetermined distance.
[0020]
Here, the hinge member 3 can be bent and stretched by the pivot portion 33 at the center portion in the longitudinal direction, and is connected to the first frame 1 and the second frame 2 at two connecting portions connected to each other by the pivot portion 33. Is adjustable in the longitudinal direction. Moreover, the connection parts 31 and 32 which hold | maintain each strip-shaped bottom member 6 and 6 'among the hinge members 3, and are respectively couple | bonded with the 1st frame 1 and the 2nd frame 2 are comprised from the linear member.
[0021]
Below each frame 1, 2, 4 and the hinge member 3, an elevating mechanism 81 that moves the frames 1, 2, 4 and the hinge member 3 in parallel with the side beam 5 in the vertical direction is installed. As shown in FIG. 3, a back support raising / lowering mechanism 82 that raises the user's back by raising the back support frame 4 is installed under each frame 1, 2, 4. Further, as shown in FIG. 4, below the frames 2, 4 and the hinge member 3, a knee standing mechanism 83 that slightly bends the user's knee in conjunction with the backrest raising / lowering mechanism 82 is installed. .
[0022]
Here, when the user's thigh is long, the A portion of FIG. 3 is bent at the pivot portion 33 in the center portion according to the user's physique as shown in FIG. The hinge member 3 is fixed to the both frames 1 and 2 while being shifted in the foot direction (left side in the figure). Conversely, when the user's thigh is short, as shown in FIG. 5B in an enlarged view of part B of FIG. 2 and fixed to the waist direction (right side in the figure).
[0023]
In order to fix the hinge member 3 to both the frames 1 and 2 by shifting the positions in the longitudinal direction with respect to both the frames 1 and 2, first, the pivot portion 33 of the hinge member 3 is positioned immediately below the knee joint of the user. Next, the position of the hinge member 3 with respect to both the frames 1 and 2 is adjusted. Here, a plurality of sets of fixing pin holes 30 are formed on the side surfaces of the linear members 31 and 32 of the hinge member 3 so as to penetrate in the left-right direction. A corresponding set of fixing pin holes 10 and 20 are formed. Therefore, when the position of the hinge member 3 is shifted and adjusted, the fixing pin holes 10 and 20 formed in the frames 1 and 2 and the linear members 31 and 32 of the hinge member 3 are formed. Position adjustment is performed so that one of the plurality of sets of fixed pin holes 30 faces. That is, the position adjustment of the hinge member 3 with respect to both the frames 1 and 2 can be performed step by step at the pitch at which the fixing pin holes 30 are formed.
[0024]
Then, fixing pins (not shown) are inserted into a plurality of fixing pin holes 30 that are opened through the side surfaces of both the frames 1 and 2 and the hinge member 3 in the left-right direction, and the linear linear member of the hinge member 3 is inserted. 31 and 32 and both frames 1 and 2 are combined. At this time, among the strip-shaped bottom members 6 ′, those which obstruct the connection between the linear members 31, 32 and the frames 1, 2 are pulled out in either the left or right direction and removed from the hinge member 3.
[0025]
Then, by shifting the hinge member 3 with respect to both the frames 1 and 2, an open portion is generated in one of the connecting portions 31 and 32 of the hinge member 3. Therefore, the linear members 31 and 32 are removed to the side opposite to the side where the strip-shaped bottom member 6 ′ is removed, that is, the linear member (31 or 32) opposite to the side where the hinge member 3 is shifted. Transfer the strip-shaped bottom member 6 '. As a result, the transferred strip-shaped bottom member 6 ′ forms the bottom of the bed, so that the transferred strip-shaped bottom member 6 ′ is fixed by the bolt 40.
[0026]
In addition, one connection part 31 of the hinge member 3 and the 1st flame | frame 1 can mutually slide in cross-sectional shape, and can slide. Similarly, the other connecting portion 32 of the hinge member 3 and the connecting portion 21 of the second frame 2 are slidable with their cross-sectional shapes engaged with each other.
Further, as described above, in this embodiment, a plurality of sets of fixing pin holes are formed on the side surface of the hinge member 3, and a set of fixing pin holes corresponding to the respective side surfaces of both frames 1 and 2 are formed. . However, conversely, a set of fixing pin holes is formed on the side surfaces of the linear members 31 and 32 of the hinge member 3, and a plurality of sets of fixing pin holes corresponding to the side surfaces of both the frames 1 and 2 are formed. It is good also as a structure which formed. Alternatively, the hinge member 3 and both frames may be configured such that a plurality of sets of fixing pin holes are formed on the side surfaces.
[0027]
As shown in FIGS. 5A to 5B, the five strip-shaped bottom members 6 and 6 ′ covering the hinge member 3 are separate from each other and have the same shape and are adjacent to each other. The same appropriate space is provided between the strip-shaped bottom members 6 and 6 '. That is, the strip-shaped bottom members 6 and 6 ′ are arranged at equal intervals at a predetermined pitch in the longitudinal direction. A pair of left and right bolts 40 (see FIG. 2) are screwed into the hinge member 3 with a T-shaped head protruding upward by a predetermined distance for each of the strip-shaped bottom members 6 and 6 ′.
[0028]
Here, as shown in FIG. 6, the strip-shaped bottom members 6 and 6 ′ are formed by extrusion molding having a constant cross-sectional shape made of polypropylene resin (PP), and the left and right sides of the strip-shaped bottom members 6 and 6 ′. Openings at both ends are sealed with caps (not shown). Each strip-shaped bottom member 6, 6 ′ has a T-shaped engaging groove 61 that opens downward and engages with the T-shaped head of each bolt 40 described above, and communicates with the left and right sides. An axially symmetric cross-sectional shape having a pair of lightening holes 60 formed in this manner. In addition, the corners of the strip-shaped bottom members 6 and 6 'are appropriately rounded so that the manufacture is easy and the fingers and mats of the operator are not damaged, and the corners are formed to prevent stress concentration. Is also given a proper are. In addition, the thickness of each part of the strip-shaped bottom members 6 and 6 'is formed substantially constant. And the uppermost part of the part which forms the engagement groove | channel 61, and the ceiling part which forms an upper surface are joined by the wall meat which divides a pair of the hollow holes 60, and the compressive strength of an up-down direction is raised. .
[0029]
The wide bottom member 7 is also configured in the same manner with the same material as that of the strip-shaped bottom members 6 and 6 ′ described above except that the width in the height direction of the user is wide. Therefore, the bottom members 6, 6 ′ and 7 of the present embodiment are composed of two types of extrusion molded products of the strip-shaped bottom members 6, 6 ′ and the bottom member 7. Only two types are required.
[0030]
(Operational effect of Example 1)
Since the nursing bed capable of adjusting the bending / extending position according to the present embodiment is configured as described above, the bed can be roughly divided into the following three effects.
First, according to the present embodiment, there is an effect that it is possible to provide a care bed that can be bent and stretched at a lower cost.
[0031]
That is, in the bed for care that can adjust the bending / extension position of the present embodiment, as described above, the portions corresponding to the curved bottom members of the respective prior arts are separated from each other and have a plurality of strip-shaped bottom members 6, 6 having the same shape. It consists of '. Therefore, since each strip-shaped bottom member 6, 6 'is the same standard and is molded separately, a plurality of the strip-shaped bottom members 6, 6' are formed in the present embodiment rather than molding a large curved bottom member that is integrally molded. Molding the narrow strip-shaped bottom members 6, 6 'requires a much smaller mold.
[0032]
Further, since the strip-shaped bottom members 6 and 6 ′ are made of an extrusion-molded product having a constant cross-sectional shape, the strip-shaped bottom members 6 and 6 ′ are manufactured at a lower cost by extruding an inexpensive polypropylene resin. be able to. Furthermore, since the strip-shaped bottom members 6 and 6 'have the lightening holes 60 formed to communicate with the left and right, the material cost is reduced and the weight is reduced by the amount corresponding to the lightening holes 60, and the heat retaining property is also maintained. Also good.
[0033]
In addition, as described above, the bottom members 6, 6 ′ and 7 are made of two types of extruded products of the strip-shaped bottom members 6, 6 ′ and the bottom member 7, and are necessary for the production thereof. Only two types of molds are required. Therefore, since the manufacturing cost of the mold required for the bottom members 6, 6 ', 7 can be reduced, the bottom members 6, 6', 7 can be manufactured at a lower cost.
[0034]
Therefore, according to the present embodiment, the production cost of the mold is much lower than that of the prior art, and the number of strip-shaped bottom members 6, 6 ', 7 required for one bed can be manufactured at a lower cost. it can. As a result, there is an effect that it is possible to provide a care bed that can be bent and stretched at a lower cost.
Secondly, according to the present embodiment, there is an effect that it is possible to reduce the maintenance cost of the care bed that can adjust the bending / extension position.
[0035]
That is, flexibility is not required for the bottom members 6, 6 ′, 7, and deformation of the strip-shaped bottom members 6, 6 ′ is not required even when the hinge member 3 in the knee portion is bent. Then, since there is almost no deformation of the bottom members 6, 6 ′, 7, the bottom members 6, 6 ′, 7 are prevented from cracking even when used for a long time. As a result, the bottom members 6, 6 ′ and 7 have a long life, and in the care bed in which the bending position can be adjusted according to the present embodiment, the maintenance cost can be kept low over a long period of time.
[0036]
Therefore, according to the present embodiment, it is possible not only to provide a care bed that can be adjusted in bending and extending positions at lower cost, but also to reduce the maintenance cost of the bed.
Thirdly, according to the nursing bed in which the flexion / extension position can be adjusted according to the present embodiment, there is an effect that the flexion / extension position of the knee portion can be easily adjusted while having an inexpensive configuration as described above.
[0037]
That is, the hinge member 3 has a pair of left and right bolts 40 each having a T-shaped head protruding upward for each strip-shaped bottom member 6, 6 ′, and each strip-shaped bottom member 6, 6 ′ It has an engagement groove 61 having a T-shaped cross section for engaging with 40 heads. Then, the strip-shaped bottom members 6 and 6 ′ are inserted from the lateral direction of the bed so that the heads of the pair of left and right bolts 40 are inserted into the engaging grooves 61 of the strip-shaped bottom members 6 and 6 ′ made of the extruded product. Only the strip-shaped bottom members 6 and 6 'are fixed to the bed.
[0038]
More specifically, as is clear from a comparison between FIG. 5A and FIG. 5B, by moving the three strip-shaped bottom members 6 ′, the hinge members are moved relative to the frames 1 and 2. 3 can be moved in the longitudinal direction. That is, by moving three strip-shaped bottom members 6 ′ out of the strip-shaped bottom members 6 and 6 ′ locked to the connecting portions 31 and 32 of the hinge member 3 by bolts 40, the thigh is shortest. The pivot portion 33 of the hinge member 3 can be adapted to the bending position of the knee joint for both the user and the user with the longest thigh. As a matter of course, the pivot portion 33 of the hinge member 3 can be adapted to an intermediate position by moving one or two of the three strip-shaped bottom members 6 ′. Therefore, the position of the pivot portion 33 of the hinge member 3 can be adjusted in the longitudinal direction with a step width corresponding to the pitch of the strip-shaped bottom member 6 ′.
[0039]
As a result, the insertion of each strip-shaped bottom member 6 ′ into the bed of the present embodiment and the position adjustment of the pivot portion 33 of the hinge member 3 in accordance with the user's physique become extremely easy. Moreover, since the fixing pins and bolts 40 installed in the fixing pin holes 10, 20, and 30 are easy to attach and remove, it is easy to rearrange their positions appropriately, and the adjustment of the bending and extending positions is easy. There is an effect that there is.
[0040]
The above description has been made by paying attention to the features of the strip-shaped bottom members 6 and 6 'and the bottom member 7, but by adopting these, the configuration of the hinge member 3 is also changed from the prior art and manufactured at a lower cost. Will be able to. That is, in the present embodiment, since both the connecting portions 31 and 32 of the hinge member 3 are composed of linear members as described above, they can be manufactured at a lower cost than those composed of curved members. In this respect, the cost can be reduced as compared with the prior art. Therefore, there is an effect that the manufacturing cost of both the connecting portions 31 and 32 of the hinge member 3 can be reduced.
[0041]
(Modification 1 of Example 1)
As a modified embodiment 1 of the present embodiment, it is possible to implement a nursing bed in which the cross-sectional shape of the strip-shaped bottom members 6 and 6 ′ is changed to a simpler shape as shown in FIG. According to this modification, the manufacturing cost of the strip-shaped bottom members 6 and 6 ′ can be further reduced, so that there is an effect that a care bed capable of adjusting the bending and extending positions can be provided at a lower cost.
[0042]
(Modification 2 of Example 1)
As a modification 2 of the present embodiment, as shown in FIG. 8, the use of the wide bottom member 7 is eliminated, and only the strip-shaped bottom member 6 of the same standard disposed at a predetermined interval is used to remove all of the bottom. It is possible to implement a nursing bed that is adjustable in bending and stretching positions. With such a configuration, since all the bottom members are made of a single standard product (strip-shaped bottom member 6), there is no need to prepare a plurality of molds, and the care for which the bending position can be adjusted even more inexpensively. Beds can be provided. Furthermore, since an appropriate gap is provided between each strip-shaped bottom member 6, the air permeability between the upper and lower sides of the bottom is improved through these gaps, and the moisture of the mat or the futon placed on the bottom is increased. It becomes easy to come off. Therefore, according to the nursing bed in which the bending / extension position can be adjusted according to this modification, not only the manufacturing cost is further reduced, but also the feeling of use becomes more comfortable.
[0043]
【The invention's effect】
As described above in detail, according to the nursing bed capable of adjusting the bending / extending position of the present invention, since the strip-shaped bottom members 6 and 6 'are used without using the curved bottom member, It has the effect of being cheaper than technology. In addition, since the bottom lasts long even at the bent part of the knee, the maintenance cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a side view showing the overall configuration of a nursing bed as Example 1. FIG.
FIG. 2 is a plan view showing the overall configuration of a nursing bed as Example 1
FIG. 3 is a side view of the main part showing the operation of the backrest raising / lowering mechanism in the first embodiment.
FIG. 4 is a side view of an essential part showing the operation of a kneeling mechanism in Embodiment 1.
FIG. 5 is a set diagram showing the main configuration of a nursing bed as Example 1;
(A) Side view showing the configuration of the main part with the thigh adjusted longer
(B) Side view showing the configuration of the main part with the thigh adjusted short
6 is a cross-sectional view showing a cross-sectional shape of a strip-shaped bottom member in Embodiment 1. FIG.
FIG. 7 is a cross-sectional view showing a cross-sectional shape of a strip-shaped bottom member in a modified embodiment 1
FIG. 8 is a side sectional view showing the overall configuration of a nursing bed as a modified embodiment 2;
[Explanation of symbols]
1: First frame 10: Fixing pin hole
2: Second frame 20: Fixing pin hole
21: Connection part 22: Straight line part 23, 24: Pivot part
3: Hinge member 30: Fixing pin hole
31, 32: Connection part (consisting of a linear member) 33: Pivot part
4: Back support frame
40: Bolt (with T-shaped head)
5: Side beam
6, 6 ': Strip-shaped bottom member (thin) 7: Strip-shaped bottom member (wide)
81: Elevating mechanism 82: Back support raising / lowering mechanism 83: Knee stand mechanism
91: Headboard 92: Footboard 93: Leg
M: Mattress

Claims

Extend in the longitudinal direction of the bed, a first frame capable of length adjustment respectively (1) and the second frame (2),
Connecting both the frame (1, 2) to each other in this longitudinal direction, the coupling position between both the frame (1, 2) by length adjustment of both the frame (1, 2) can be adjusted to the longitudinal direction And a hinge member (3) that enables the frame (1, 2) to be bent at the pivot portion (33) at the coupling position ;
A bottom member (6, 6 ', 7) that covers both the frames (1, 2) and the hinge member (3) to form a floor surface;
In a nursing bed with adjustable bending position,
The hinge member (3) includes a pair of connecting portions (31, 32) made of linear members fixed to both the frames (1, 2) so that their positions can be adjusted, and both the connecting portions (31, 32). ) And the pivot portion (33) for connecting to bendable,
Of the bottom members (6, 6 ', 7) , the ones covering both the connecting portions (31, 32) of the hinge member (3) are separate from each other and have a plurality of strip-shaped bottom members (6, 6). 'together with a), these bottom strips member (6, 6') is characterized in that it is disposed to sandwich the pivot portion of the hinge member (3) to (33),
A nursing bed with adjustable flexion position.

The strip-shaped bottom member (6, 6 ') is made of an extruded product having a constant cross-sectional shape, and has a wall that divides a lightening hole (60) formed in communication with the left and right into a pair,
The bed for nursing care according to claim 1, wherein the bending position can be adjusted.

The connecting portions (31, 32) of the hinge member (3) are bolts (40) or pins having a T-shaped head protruding upward for each of the strip-shaped bottom members (6, 6 '). At least a pair of left and right,
Each said short book-like bottom member, Chi also a T-shaped engaging groove to be engaged with the head (61),
The meat wall joins the ceiling part forming the upper surface of the strip-shaped bottom member (6, 6 ′) and the uppermost part of the part forming the engagement groove (61),
The bed for nursing care according to claim 2, wherein the bending position can be adjusted.

All of the bottom members are strip-shaped bottom members (6, 6 ') of the same standard,
A predetermined gap is provided between each of the strip-shaped bottom members (6, 6 ').
A nursing bed according to any one of claims 1 to 3, wherein the bending position is adjustable.