JPH08317951A - Chair - Google Patents
ChairInfo
- Publication number
- JPH08317951A JPH08317951A JP7152156A JP15215695A JPH08317951A JP H08317951 A JPH08317951 A JP H08317951A JP 7152156 A JP7152156 A JP 7152156A JP 15215695 A JP15215695 A JP 15215695A JP H08317951 A JPH08317951 A JP H08317951A
- Authority
- JP
- Japan
- Prior art keywords
- seat
- vertical member
- skeleton
- parallel
- seat portion
- 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.)
- Granted
Links
Landscapes
- Chairs Characterized By Structure (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は立ち上がり補助用の椅子
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair for assisting standing up.
【0002】[0002]
【従来の技術】従来、人の立ち上がりを補助できる椅子
としては、背部と座部がその後方に立設された支持部材
に昇降可能に取付けられ、かつ、背部と座部の上昇に伴
って座部が前方下傾となるようにその座部の後端部をベ
ルト機構にて吊り上げる構造のものが公知であった。2. Description of the Related Art Conventionally, as a chair capable of assisting a person to stand up, a back portion and a seat portion are attached to a support member which is erected at the rear of the chair so as to be able to move up and down, and the seat portion is raised as the back portion and the seat portion rise. A structure has been known in which the rear end portion of the seat portion is lifted by a belt mechanism so that the portion tilts forward.
【0003】[0003]
【発明が解決しようとする課題】しかし、上述の従来の
椅子は、ベルト機構が複雑であり製造が困難であった。
また、背部の傾動可能角度が小さいという欠点があっ
た。さらに、背部は鉛直状乃至前傾状とはならないた
め、老人や病人等が立ち上がる際には、上体を起すのが
困難となってスムースに立ち上がることができない場合
があった。However, the above-mentioned conventional chair has a complicated belt mechanism and is difficult to manufacture.
Further, there is a drawback that the tiltable angle of the back is small. Further, since the back does not have a vertical shape or an inclining shape, when an elderly person, a sick person, or the like stands up, it may be difficult to raise the upper body and it may not be possible to stand up smoothly.
【0004】そこで、本発明は、上述の問題を解決し
て、構造が簡単であると共に、座り心地が良く、かつ、
人が楽に立ち上がることができる椅子を提供することを
目的とする。Therefore, the present invention solves the above-mentioned problems and has a simple structure and is comfortable to sit on, and
The purpose is to provide a chair that allows a person to easily stand up.
【0005】[0005]
【課題を解決するための手段】上述の目的を達成するた
めに本発明に係る椅子は、相互に平行な下方の基台と上
方水平部材及び相互に平行な前縦部材と後縦部材とをも
って平行リンクを形成し、かつ、該平行リンクにて背部
の骨格を前後傾動可能に形成し、座部の後端部に座部取
付部を後方延伸状に設け、該座部を、上記背部の骨格
に、上記座部取付部とそれに枢着されると共に上記前縦
部材と後縦部材に夫々転動昇降可能な前・後転動ローラ
とを介して該骨格の前傾状態に於いて座部が上昇位置に
て前方下傾となるように、取付けたものである。In order to achieve the above-mentioned object, a chair according to the present invention has a lower base and an upper horizontal member which are parallel to each other, and a front vertical member and a rear vertical member which are parallel to each other. A parallel link is formed, and the skeleton of the back part is formed by the parallel link so as to be able to tilt forward and backward, and a seat part attachment part is provided in a rearward extension shape at the rear end part of the seat part. The seat is attached to the skeleton through the seat attachment portion and the front and rear rolling rollers pivotally attached to the seat vertical portion and capable of rolling up and down on the front vertical member and the rear vertical member, respectively. The part is attached so that the part is tilted downward at the raised position.
【0006】なお、背部の骨格が鉛直状に起立した状態
に於いて、該骨格の平行リンクの後縦部材に対応する後
転動ローラを、該平行リンクの前縦部材に対応する前転
動ローラよりも上方に配置するも好ましい。In the state where the skeleton of the back part is vertically erected, the rear rolling roller corresponding to the rear vertical member of the parallel link of the skeleton is moved to the front rolling member corresponding to the front vertical member of the parallel link. It is also preferable to arrange it above the roller.
【0007】また、背部の骨格を前後に傾動駆動させる
リクライニング駆動機構と、座部を昇降駆動させる昇降
駆動機構と、座部の高さ寸法Hが所定値よりも大きいと
きは背部の傾斜角度θを−5°〜15°の間で規制しかつ
座部の高さ寸法Hが上記所定値以下のときは背部の傾斜
角度θを15°〜45°の間で規制する傾動規制手段と、を
備えているのも望ましい。Further, a reclining drive mechanism for tilting the back skeleton back and forth, a lifting drive mechanism for lifting and lowering the seat, and a tilt angle θ of the back when the height H of the seat is larger than a predetermined value. Is between -5 ° and 15 °, and when the height H of the seat is less than or equal to the above predetermined value, the tilt regulating means for regulating the back inclination angle θ between 15 ° and 45 °. It is also desirable to have it.
【0008】[0008]
(請求項1によれば)平行リンクにて背部の骨格を前後
傾動可能に形成したので、背部の傾動可能角度を大きく
設定することができる。このため、背部の傾斜角度の調
整範囲が広くなる。背部が前傾するので、立ち上がる際
に背部が人の背中を支持して上体を楽に起こすことがで
きる。さらに、背部(骨格)の前傾状態に於いて座部が
上昇位置にて前方下傾となるので、自然に中腰状態とな
り、立ち上がりが楽である。(According to claim 1) Since the back skeleton can be tilted back and forth by the parallel link, the tiltable angle of the back can be set large. Therefore, the adjustment range of the inclination angle of the back portion is widened. Since the back part leans forward, the back part supports the person's back when standing up and can easily raise the upper body. Further, when the back (skeleton) is tilted forward, the seat tilts forward and downward at the raised position, which naturally results in a mid-waist state and is easy to stand up.
【0009】(請求項2によれば)座部にかかる荷重に
より、前・後ローラが背部の骨格の前縦部材と後縦部材
に、夫々前後方向内方へ圧接して、座部の姿勢が維持さ
れる。後転動ローラの高さ位置が前転動ローラの高さ位
置よりも高いほど、前・後ローラが前縦部材と後縦部材
に圧接する力が小さくなる。このため、本椅子では、前
・後ローラの高さ位置が略同一の場合に比して、前・後
ローラの圧接力及びその反力が小さくなり、前・後ロー
ラが、座部にかかる荷重に耐え得る。(According to claim 2) The front and rear rollers are pressed against the front vertical member and the rear vertical member of the back skeleton inward in the front-rear direction by the load applied to the seat, and the posture of the seat is changed. Is maintained. The higher the height position of the rear rolling roller is than the height position of the front rolling roller, the smaller the force with which the front and rear rollers press against the front vertical member and the rear vertical member. Therefore, in this chair, the pressure contact force between the front and rear rollers and the reaction force thereof are smaller than in the case where the front and rear rollers are substantially at the same height position, and the front and rear rollers are applied to the seat portion. Can withstand loads.
【0010】(請求項3によれば)座部の高さ寸法が所
定値以下のときは座部に着座して、背部の傾斜角度を15
°〜45°の間で調整できる。かつ、背部の傾斜角度が15
°よりも小さくならないので、上体が起き過ぎたり前へ
倒れる虞が無い。また、座部を上昇させて高さ寸法を所
定値よりも大きくすれば、背部の傾斜角度が−5°〜15
°の間で規制されるので、立ち上がる際に人の背中が前
方に押されて上体が自然に起き上がる。かつ、腰の位置
が高くなると共に座部が前方下傾斜となるので、立ち上
がりが著しく楽になる。When the height of the seat is less than a predetermined value (according to claim 3), the seat is seated on the seat, and the inclination angle of the back is 15
It can be adjusted between ° and 45 °. Also, the inclination angle of the back is 15
Since it does not become smaller than °, there is no risk of the upper body rising too much or falling forward. Also, if the seat is raised and the height dimension is made larger than a predetermined value, the inclination angle of the back portion is −5 ° to 15 °.
It is regulated between 0 °, so when standing up, the person's back is pushed forward and the upper body naturally rises. Moreover, since the waist position becomes higher and the seat portion inclines downward toward the front, it becomes extremely easy to stand up.
【0011】[0011]
【実施例】以下、実施例を示す図面に基づき本発明を詳
説する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments.
【0012】図1と図2は、本発明に係る椅子の一実施
例を示し、この椅子は、基台1と、その基台1に前後傾
動可能に取付けられた背部2と、その背部2に昇降可能
に取付けられた座部3と、座部3と一体に昇降する肘か
け4,4と、を備えている。なお、理解し易くするた
め、全体の骨組のみを図示したが、実際は、所定の部分
にクッション材や張り材等が付設される。FIG. 1 and FIG. 2 show an embodiment of a chair according to the present invention, which comprises a base 1, a back portion 2 attached to the base 1 so as to be tiltable in the front-back direction, and a back portion 2 thereof. The seat part 3 is attached so as to be able to move up and down, and the armrests 4 and 4 that are lifted up and down integrally with the seat part 3. Although only the entire frame is shown for the sake of easy understanding, a cushion material, upholstery material, etc. are actually attached to predetermined portions.
【0013】基台1は、左右一対の側方支持部材9,9
とその側方支持部材9,9を相互に連結する連結部材10
と、その連結部材10の上面に固着された正面視L字状の
枢支部材11, 11と、を備える。The base 1 includes a pair of left and right side supporting members 9, 9.
And a connecting member 10 for connecting the side supporting members 9, 9 to each other.
And a pivotal support member 11, 11 having an L-shape in a front view, which is fixed to the upper surface of the connecting member 10.
【0014】平行リンク8は、基台1と、その基台1の
枢支部材11の鉛直片部の前部に左右方向の水平軸心廻り
に揺動自在として下端部が枢着される前縦部材6と、枢
支部材11の鉛直片部の後部に左右方向の水平軸心廻りに
揺動自在として下端部が枢着される後縦部材7と、前縦
部材6と後縦部材7の上端部に前端部と後端部が枢結さ
れる上方水平部材5と、をもって形成される。The parallel link 8 is attached to the front of the base 1 and the vertical piece of the pivot member 11 of the base 1 before the lower end thereof is pivotally mounted so as to be swingable around a horizontal axis in the left-right direction. The vertical member 6, a rear vertical member 7 having a lower end pivotally attached to the rear portion of the vertical piece of the pivot member 11 so as to be swingable about a horizontal axis in the left-right direction, the front vertical member 6, and the rear vertical member 7. And an upper horizontal member 5 having a front end and a rear end pivotally connected to each other at the upper end thereof.
【0015】つまり、相互に平行な下方の基台1と上方
水平部材5及び相互に平行な前縦部材6と後縦部材7と
をもって平行リンク8を形成する。前縦部材6と後縦部
材7の中間高さ位置には、補助用の中間連結部材12が配
設される。That is, the lower base 1 and the upper horizontal member 5 which are parallel to each other and the front vertical member 6 and the rear vertical member 7 which are parallel to each other form a parallel link 8. An auxiliary intermediate connecting member 12 is provided at an intermediate height position between the front vertical member 6 and the rear vertical member 7.
【0016】しかして、平行リンク8,8にて背部2の
骨格2aを前後傾動可能に形成する。具体的には、背部
2の骨格2aは、左右一対の平行リンク8,8の基台1
よりも上方の部分と、その平行リンク8,8の上端部を
相互に連結する水平連結部材13と、から成る。Thus, the skeleton 2a of the back portion 2 is formed by the parallel links 8 and 8 so that it can be tilted forward and backward. Specifically, the skeleton 2a of the back portion 2 is the base 1 of the pair of left and right parallel links 8,8.
And a horizontal connecting member 13 for connecting the upper ends of the parallel links 8 to each other.
【0017】また、座部3の後端部に座部取付部19, 19
を後方延伸状に設ける。座部取付部19, 19は、金属板か
ら成り、座部3の左右両端部後方に鉛直に配設される。Further, at the rear end portion of the seat portion 3, seat portion mounting portions 19, 19 are provided.
Is provided in a backward stretched state. The seat attachment portions 19, 19 are made of a metal plate, and are vertically arranged behind the left and right ends of the seat 3.
【0018】さらに、図1と図3に示すように、座部取
付部19, 19を、前・後転動ローラ20…, 21…を介して、
平行リンク8,8の前縦部材6,6と後縦部材7,7
に、上下動自在に取付ける。かつ、骨格2aの前傾状態
に於いて座部3が上昇位置にて前方下傾となるように構
成する(図9参照)。Further, as shown in FIGS. 1 and 3, the seat mounting portions 19, 19 are connected to the front and rear rolling rollers 20 ,.
Front vertical members 6,6 and rear vertical members 7,7 of the parallel links 8,8
It is mounted so that it can move up and down. In addition, the seat portion 3 is configured to be tilted forward and downward when the skeleton 2a is tilted forward (see FIG. 9).
【0019】つまり、座部3を、背部2の骨格2aに、
座部取付部19とそれに枢着されると共に前縦部材6と後
縦部材7に夫々転動昇降可能な前・後転動ローラ20, 21
とを介して骨格2aの前傾状態に於いて座部3が上昇位
置にて前方下傾となるように、取付ける。That is, the seat portion 3 is attached to the skeleton 2a of the back portion 2,
The seat mounting portion 19 and the front and rear rolling rollers 20 and 21 which are pivotally attached to the front vertical member 6 and the rear vertical member 7 are capable of rolling up and down respectively.
The seat portion 3 is attached so that the skeleton 2a is tilted forward at the raised position when the skeleton 2a is tilted forward.
【0020】また、図3に示すように、平行リンク8の
前縦部材6と後縦部材7は、側外方の縦レール部6a,
7aと、内側の柱部6b,7bと、から成る。Further, as shown in FIG. 3, the front vertical member 6 and the rear vertical member 7 of the parallel link 8 are composed of vertical rail portions 6a on the outer side,
7a and inner pillars 6b and 7b.
【0021】前縦部材6の縦レール部6aのレール溝
に、前転動ローラ20が上下方向へ転動自在に嵌め込ま
れ、かつ、後縦部材7の縦レール部7aのレール溝に、
後転動ローラ21が上下方向へ転動自在に嵌め込まれる。The front rolling roller 20 is fitted in the rail groove of the vertical rail portion 6a of the front vertical member 6 so as to be vertically rollable, and in the rail groove of the vertical rail portion 7a of the rear vertical member 7,
The rear rolling roller 21 is fitted so as to be vertically rollable.
【0022】さらに、背部2の骨格2aが鉛直状に起立
した状態に於いて、その骨格2aの平行リンク8の後縦
部材7に対応する後転動ローラ21を、平行リンク8の前
縦部材6に対応する前転動ローラ20よりも上方に配置す
る(図8参照)。Further, in a state in which the skeleton 2a of the back portion 2 is vertically erected, the rear rolling roller 21 corresponding to the rear vertical member 7 of the parallel link 8 of the skeleton 2a is attached to the front vertical member of the parallel link 8. It is arranged above the front rolling roller 20 corresponding to No. 6 (see FIG. 8).
【0023】これにより、前・後転動ローラ20, 21と平
行リンク8(即ち前縦部材6と後縦部材7)の耐久性が
向上する。As a result, the durability of the front / rear rolling rollers 20, 21 and the parallel link 8 (that is, the front vertical member 6 and the rear vertical member 7) is improved.
【0024】これを、図5の(イ),(ロ)に示す簡略
図にて説明する。座部3にかかる荷重Wによる前・後転
動ローラ20, 21の中間点P廻りのモーメントMはM=W
×L′である。また、前・後転動ローラ20, 21により平
行リンク8に作用する偶力NはN=F×H′であり、こ
の偶力Nは上記モーメントMと等しいため、W×L′=
F×H′の式が成立する。従って、力Fは前・後転動ロ
ーラ20, 21間の高さ寸法Hに反比例する。This will be described with reference to the simplified diagrams shown in (a) and (b) of FIG. The moment M about the intermediate point P of the front and rear rolling rollers 20, 21 due to the load W applied to the seat portion 3 is M = W
XL '. Further, the couple N acting on the parallel link 8 by the front and rear rolling rollers 20 and 21 is N = F × H ', and this couple N is equal to the moment M, so W × L' =
The formula of F × H ′ holds. Therefore, the force F is inversely proportional to the height dimension H between the front and rear rolling rollers 20, 21.
【0025】しかして、図5の(イ),(ロ)を比較す
れば明らかなように、(ロ)に於ける高さ寸法H′が
(イ)に於ける高さ寸法H′よりも小さいため、(ロ)
に於ける力Fは(イ)に於ける力Fよりも大きい。特
に、前・後転動ローラ20, 21が同一高さのとき(つまり
高さ寸法Hの数値が0のとき)は、平行リンク8と前・
後転動ローラ20, 21にきわめて大きな力(理論上は無限
に大きい力)が作用することとなり、平行リンク8と前
・後転動ローラ20, 21の変形や破損が起こる。However, as is clear by comparing (a) and (b) in FIG. 5, the height dimension H'in (b) is larger than the height dimension H'in (a). Because it is small, (b)
The force F in (a) is larger than the force F in (a). Especially, when the front and rear rolling rollers 20 and 21 have the same height (that is, when the value of the height dimension H is 0),
An extremely large force (in theory, an infinitely large force) is applied to the rear rolling rollers 20 and 21, and the parallel link 8 and the front and rear rolling rollers 20 and 21 are deformed or damaged.
【0026】逆にいえば、後転動ローラ21を前転動ロー
ラ20よりも上方に配置することにより、前後行リンク8
に作用する力及びその反力が小さくなり、平行リンク8
と前・後転動ローラ20, 21の変形や破損を防止すること
ができる。Conversely, by arranging the rear rolling roller 21 above the front rolling roller 20, the front-rear link 8
The force that acts on the
Therefore, it is possible to prevent the front and rear rolling rollers 20, 21 from being deformed or damaged.
【0027】また、上記の如く後転動ローラ21を前転動
ローラ20よりも上方に配置することにより、背部2が図
8の鉛直状態から図9の前傾状態になるまでの僅かな角
度───即ち角度θ=−5°───に於いて、座部3が
前方下方へ傾斜する角度θ′の絶対値が大きくなる。こ
のため、着座していた人が容易に立ち上がることができ
る。By arranging the rear rolling roller 21 above the front rolling roller 20 as described above, a slight angle from the vertical state of FIG. 8 to the forward inclined state of FIG. That is, at the angle θ = −5 °, the absolute value of the angle θ ′ at which the seat portion 3 tilts forward and downward becomes large. Therefore, the seated person can easily stand up.
【0028】図1と図2にもどって、肘かけ4は、その
後端部に取付けられる肘かけ取付部材22と、その取付部
材22に枢着される前・後転動ローラ20, 21とを、介し
て、平行リンク8の前縦部材6と後縦部材7に、昇降可
能に取付けられる。即ち、その前・後転動ローラ20, 21
は、縦レール部6a,7aに転動自在に嵌め込まれる。Referring back to FIGS. 1 and 2, the armrest 4 includes an armrest mounting member 22 mounted at its rear end and front and rear rolling rollers 20, 21 pivotally mounted on the mounting member 22. , And is attached to the front vertical member 6 and the rear vertical member 7 of the parallel link 8 so as to be able to move up and down. That is, the front and rear rolling rollers 20, 21
Is rotatably fitted into the vertical rail portions 6a and 7a.
【0029】さらに、左右の前縦部材6,6の前面に、
4個の前転動ローラ20…を相互に所定間隔に保持する平
面視門型の前昇降保持部材23aが、配設される(図1と
図2と図3参照)。即ち、前昇降保持部材23aの左右両
片部の夫々の上下両端部を、前転動ローラ20…の枢支軸
が回転自在に貫通する。Furthermore, on the front surfaces of the left and right front vertical members 6, 6,
A front elevation holding member 23a, which is of a portal type in a plan view, is arranged to hold the four front rolling rollers 20 at predetermined intervals with each other (see FIGS. 1, 2, and 3). That is, the pivotal shafts of the front rolling rollers 20 rotatably pass through the upper and lower end portions of the left and right half portions of the front lifting / lowering holding member 23a.
【0030】同様に、左右の後縦部材7,7の後面に、
4個の後転動ローラ21…を相互に所定間隔に保持する平
面視門型の前昇降保持部材23bが、配設される(図1と
図3参照)。即ち、後昇降保持部材23bの左右両片部の
夫々の上下両端部を、後転動ローラ21…の枢支軸が回転
自在に貫通する。Similarly, on the rear surfaces of the left and right rear vertical members 7, 7,
A front elevation holding member 23b having a gantry shape in plan view, which holds the four rear rolling rollers 21 at predetermined intervals, is provided (see FIGS. 1 and 3). That is, the pivotal support shafts of the rear rolling rollers 21 rotatably pass through the upper and lower end portions of the left and right half portions of the rear lift holding member 23b.
【0031】これにより、座部3と肘かけ4の左右両端
部を夫々同一高さに保持することができると共に、座部
3と肘かけ4を略一定の上下間隔をもって一体状に昇降
させることが可能となる。As a result, the left and right ends of the seat portion 3 and the armrest 4 can be held at the same height, respectively, and the seat portion 3 and the armrest 4 can be moved up and down integrally with a substantially constant vertical interval. Is possible.
【0032】また、図2と図3と図4に示すように、こ
の椅子は、背部2の骨格2aを前後に傾動駆動させるリ
クライニング駆動機構Aと、座部3を昇降駆動させる昇
降駆動機構Bとを、備えている。As shown in FIGS. 2, 3 and 4, this chair is provided with a reclining drive mechanism A for tilting the skeleton 2a of the back part 2 back and forth, and a lifting drive mechanism B for driving the seat part 3 up and down. And are equipped with.
【0033】リクライニング駆動機構Aは、図2と図4
に示すように、平行リンク8,8の前縦部材6,6の上
端部近傍と略中間高さ部を夫々相互に連結すると共に中
間部にブラケット15aを有する取付保持部材14aと、後
縦部材7,7の上端部近傍と略中間高さ部を夫々相互に
連結すると共に中間部にブラケット15bを有する取付保
持部材14bと、上方の取付保持部材14aのブラケット15
aに左右方向の水平軸心廻りに揺動自在として上端部が
枢着されたアーム部16aとそのアーム部16aの下端に固
着された雌ねじ本体部16bとから成る揺動雌ねじ部材16
と、揺動雌ねじ部材16に螺進退自在に螺入される雄ねじ
杆17と、雄ねじ杆17の下端に出力軸が連動連結されると
共にモータ本体部が略中間高さ位置の取付保持部材14b
のブラケット15bに左右方向の水平軸心廻りに揺動自在
として枢着された傾動駆動モータ18と、を有している。The reclining drive mechanism A is shown in FIGS.
As shown in FIG. 5, the parallel links 8 and 8 are connected to each other near the upper end portions of the front vertical members 6 and 6 and to the substantially intermediate height portion, respectively, and a mounting and holding member 14a having a bracket 15a in the middle portion, and a rear vertical member. 7, 7 and 7, the attachment holding member 14b having a bracket 15b in the middle portion, and the bracket 15 of the upper attachment holding member 14a.
An oscillating female screw member 16 including an arm portion 16a having an upper end portion pivotally attached to a and being pivotable about a horizontal axis in the left-right direction, and an internal thread main body portion 16b fixed to the lower end of the arm portion 16a.
A male screw rod 17 which is screwed into the swinging female screw member 16 so as to be able to advance and retreat, and an output shaft is interlockingly connected to the lower end of the male screw rod 17 and the motor body is attached and held at a substantially intermediate height position 14b.
The tilting drive motor 18 pivotally attached to the bracket 15b so as to be swingable around the horizontal axis in the left-right direction.
【0034】これにより、図4に実線にて示す背部2の
後傾状態に於いてモータ18を回転駆動させて雄ねじ杆17
を螺退させれば、背部2が前方へ揺動する。そして、仮
想線にて示す如く、背部2を前方傾斜状とすることがで
きる。このとき、上方と中間高さの取付保持部材14a,
14bの間の間隔寸法Lは、後方傾斜状態のときに比して
大きくなる。As a result, the motor 18 is rotationally driven in the rearward tilted state of the back portion 2 shown by the solid line in FIG.
When the screw is retracted, the back portion 2 swings forward. Then, as shown by an imaginary line, the back portion 2 can be inclined forward. At this time, the mounting and holding members 14a of the upper and middle heights,
The interval dimension L between the 14b is larger than that in the backward inclined state.
【0035】また、モータ18を回転駆動させて雄ねじ杆
17を螺進させれば、背部2が後方へ揺動する。Further, the motor 18 is rotated to drive the male screw rod.
When 17 is screwed, the back part 2 swings backward.
【0036】昇降駆動機構Bは、図2と図3に示すよう
に、左右の平行リンク8,8の内側に固定状に設けられ
る昇降駆動用モータ26と、その平行リンク8,8の内側
に前・後縦部材6,7に平行として上下方向の軸心廻り
に回転自在に枢設される縦ねじ杆27と、モータ26の出力
軸と縦ねじ杆27の下端部とを連動連結する減速機構28
と、前記前昇降保持部材23aの内面に固着されると共に
縦ねじ杆27に螺進退自在に螺嵌される雌ねじ部材29と、
を有している。As shown in FIGS. 2 and 3, the elevating drive mechanism B includes an elevating drive motor 26 fixedly provided inside the left and right parallel links 8, 8 and an inner side of the parallel links 8, 8. A vertical screw rod 27 that is rotatably mounted around the vertical axis parallel to the front and rear vertical members 6 and 7, and an output shaft of the motor 26 and a lower end portion of the vertical screw rod 27 that are interlocked and coupled. Mechanism 28
A female screw member 29 that is fixed to the inner surface of the front lifting and lowering holding member 23a and that is screwed into the vertical screw rod 27 so as to be able to advance and retract.
have.
【0037】骨格2aの下部には、平行リンク8,8の
前縦部材6,6の下端部近傍を相互に連結する取付支持
部材25が、固定状に配設される。その取付支持部材25に
縦ねじ杆27の下端部が枢結され、かつ、前記取付保持部
材14aに縦ねじ杆27の上端部が枢支具24を介して枢結さ
れる。At the lower part of the skeleton 2a, a mounting support member 25 is fixedly arranged to connect the vicinity of the lower ends of the front vertical members 6, 6 of the parallel links 8, 8 to each other. A lower end portion of the vertical screw rod 27 is pivotally connected to the attachment support member 25, and an upper end portion of the vertical screw rod 27 is pivotally connected to the attachment holding member 14a via a pivot support 24.
【0038】上述の構成により、モータ26を回転駆動さ
せれば、縦ねじ杆27が回転して雌ねじ部材29が上昇又は
下降する。これに伴って、前昇降保持部材23aと、前転
動ローラ20…と、後昇降保持部材23bと、後転動ローラ
21…と、座部取付部19と、座部3と、肘かけ取付部材22
と、肘かけ4とが上昇又は下降する。従って、座部3と
肘かけ4を略一定の上下間隔をもって昇降させることが
できる。With the above structure, when the motor 26 is driven to rotate, the vertical screw rod 27 rotates and the female screw member 29 moves up or down. Along with this, the front lifting / lowering holding member 23a, the front rolling rollers 20 ..., the rear lifting / lowering holding member 23b, and the rear rolling rollers
21 ..., seat mounting portion 19, seat portion 3, and armrest mounting member 22
And the armrest 4 ascend or descend. Therefore, the seat portion 3 and the armrest 4 can be raised and lowered with a substantially constant vertical interval.
【0039】なお、図例では、減速機構28は、ベルトと
プーリから成るが、これ以外にも、複数のギヤーにて減
速機構28を構成するも好ましい。In the illustrated example, the speed reduction mechanism 28 is composed of a belt and a pulley, but it is also preferable to configure the speed reduction mechanism 28 with a plurality of gears.
【0040】また、この椅子は、座部3の高さ寸法Hが
所定値よりも大きいときは背部2の傾斜角度θを−5°
〜15°の間で規制しかつ座部3の高さ寸法Hが所定値以
下のときは背部2の傾斜角度θを15°〜45°の間で規制
する傾動規制手段C、を備えている。Further, in this chair, when the height dimension H of the seat portion 3 is larger than a predetermined value, the inclination angle θ of the back portion 2 is -5 °.
The tilting restriction means C is provided for restricting the inclination angle θ of the back portion 2 between 15 ° and 45 ° when the height dimension H of the seat 3 is less than or equal to a predetermined value. .
【0041】ここで、座部3の高さ寸法Hとは、背部2
の傾斜角度θを15°とした場合に於ける基台1の下面か
ら座部3の座面3aの先端部までの上下間隔と、定義す
る(図6と図7参照)。Here, the height dimension H of the seat portion 3 means the back portion 2
Is defined as the vertical distance from the lower surface of the base 1 to the tip of the seat surface 3a of the seat 3 when the inclination angle θ is 15 ° (see FIGS. 6 and 7).
【0042】しかして、(図2と図3にもどって)傾動
規制手段Cは、背部2の骨格2aの前縦部材6の所定高
さ位置に配設される高さ検出用リミットスイッチ30と、
リクライニング駆動機構Aの雄ねじ杆17に沿って上下に
配設される3個の傾斜角度検出用リミットスイッチ31
a,31b,31cと、そのリミットスイッチ30, 31a,31
b,31cからの信号によりリクライニング駆動機構Aの
モータ18と昇降駆動機構Bのモータ26の回転を制御する
図示省略の制御回路と、を備えている。Therefore, (returning to FIG. 2 and FIG. 3), the tilt restricting means C includes a height detecting limit switch 30 arranged at a predetermined height position of the front vertical member 6 of the skeleton 2a of the back portion 2. ,
Three tilt angle detecting limit switches 31 arranged vertically along the male screw rod 17 of the reclining drive mechanism A.
a, 31b, 31c and their limit switches 30, 31a, 31
It is provided with a control circuit (not shown) that controls the rotation of the motor 18 of the reclining drive mechanism A and the motor 26 of the lifting drive mechanism B by signals from b and 31c.
【0043】また、傾動規制手段Cの座部3の高さ寸法
Hの所定値を、 300mmに設定する。Further, the predetermined value of the height dimension H of the seat portion 3 of the tilt regulating means C is set to 300 mm.
【0044】高さ検出用リミットスイッチ30は、座部3
の高さ寸法Hが 300mm以下のとき(所定値以下のとき)
に、前昇降保持部材23aに接触してそれを検出し、か
つ、座部3の高さ寸法Hが 300mmよりも大きいとき(所
定値よりも大きいとき)に、前昇降保持部材23aから離
れて非検出状態となる位置に固定される。The height detecting limit switch 30 includes a seat 3
When the height dimension H of the is less than 300mm (when it is less than the specified value)
In addition, when the front lifting / lowering holding member 23a is contacted and detected, and when the height H of the seat 3 is larger than 300 mm (larger than a predetermined value), the front lifting / lowering holding member 23a is separated from the front lifting / lowering holding member 23a. It is fixed at the position where it will not be detected.
【0045】また、上端の傾斜角度検出用リミットスイ
ッチ31aは、背部2の傾斜角度θが(前傾状態である)
−5°に達するとリクライニング駆動機構Aの揺動雌ね
じ部材16の本体部16bに接触して検出状態となる位置に
固定される。The tilt angle detection limit switch 31a at the upper end has the tilt angle θ of the back portion 2 (in the forward tilted state).
When it reaches −5 °, it contacts with the main body portion 16b of the swinging female screw member 16 of the reclining drive mechanism A and is fixed at a position in the detection state.
【0046】中間の傾斜角度検出用リミットスイッチ31
bは、背部2の傾斜角度θが(後傾状態である)15°以
下のときに常に揺動雌ねじ部材16の本体部16bに接触し
て検出状態となり、かつ、傾斜角度θが15°よりも小さ
くなると揺動雌ねじ部材16の本体部16bから離れて非検
出状態となる位置に固定される。Limit switch 31 for detecting an intermediate tilt angle
b is always in contact with the main body portion 16b of the oscillating female screw member 16 when the inclination angle θ of the back portion 2 is 15 ° or less (which is the rearward inclination state) and is in the detection state, and the inclination angle θ is greater than 15 °. When becomes smaller, the oscillating female screw member 16 is fixed at a position where it is separated from the main body portion 16b and is in the non-detection state.
【0047】下端の傾斜角度検出用リミットスイッチ31
cは、背部2の傾斜角度θが45°に達すると揺動雌ねじ
部材16の本体部16bに接触して検出状態となる位置に固
定される。Limit switch 31 for detecting the tilt angle at the lower end
When the inclination angle θ of the back portion 2 reaches 45 °, c contacts the main body portion 16b of the oscillating female screw member 16 and is fixed at a position in the detection state.
【0048】しかして、図6と図1に示すように、座部
3の高さ寸法Hが 300mm以下のとき(所定値以下のと
き)は、前記高さ検出用リミットスイッチ30が検出状態
となり、その信号を受けた制御回路にて、背部2の傾斜
角度θが(図6の)15°〜(図1の)45°の範囲内とな
るように傾動駆動モータ18の回転駆動が規制される。However, as shown in FIGS. 6 and 1, when the height H of the seat portion 3 is 300 mm or less (when it is a predetermined value or less), the height detecting limit switch 30 is in the detection state. The control circuit receiving the signal regulates the rotation drive of the tilting drive motor 18 so that the tilt angle θ of the back portion 2 is within the range of 15 ° (FIG. 6) to 45 ° (FIG. 1). It
【0049】これにより、座部3に人が着座していると
きに、背部2の傾斜角度θが15°よりも小さくならない
ので、人が座部3から前方へ滑り落ちるのを防止できる
と共に座り心地が良好である。As a result, when a person is seated on the seat portion 3, the inclination angle θ of the back portion 2 does not become smaller than 15 °, so that the person can be prevented from slipping forward from the seat portion 3 and the sitting comfort can be improved. Is good.
【0050】なお、背部2の傾斜角度θを15°〜45°の
範囲内で自由に調整可能であり、傾斜角度θの調整可能
範囲が大きいといる利点がある。The inclination angle θ of the back portion 2 can be freely adjusted within the range of 15 ° to 45 °, and there is an advantage that the adjustable range of the inclination angle θ is large.
【0051】また、図7と図8と図9に示すように、座
部3の高さ寸法Hを 300mmよりも大きくすると(即ち所
定値よりも大きくなると)、高さ検出用リミットスイッ
チ30が非検出状態となり、その信号を受けた制御回路に
て、背部2の傾斜角度θが(図9の)−5°〜(図7
の)15°の範囲内となるように傾動駆動モータ18の回転
駆動が規制される。Further, as shown in FIGS. 7, 8 and 9, when the height dimension H of the seat portion 3 is made larger than 300 mm (that is, larger than a predetermined value), the height detecting limit switch 30 becomes When the control circuit receives the signal in the non-detection state, the inclination angle θ of the back part 2 is (from FIG. 9) −5 ° to (FIG. 7).
The rotation drive of the tilt drive motor 18 is restricted so as to be within the range of 15 °.
【0052】これにより、人が立ち上がろうとする際
に、背部2の傾斜角度θが15°よりも大きくならない─
──即ち背部2が後方へ倒れ過ぎない───ので、背部
2の強度を確保できる。かつ、人が後ろへ倒れるのを防
止できて安全である。As a result, when a person tries to stand up, the inclination angle θ of the back part 2 does not become larger than 15 °-
That is, since the back portion 2 does not fall backward too much, the strength of the back portion 2 can be secured. In addition, it is safe because it can prevent people from falling backwards.
【0053】さらに、背部2が人の背中を支えるので楽
に上体を起こすことができると共に、座部3が上昇位置
にて前方下傾となるので、人が自然に中腰状態となる。
従って、老人や病人等の体が弱っている人や体が不自由
な人でも、楽に立ち上がることができる。Further, since the back portion 2 supports the back of the person, the upper body can be easily raised, and the seat portion 3 tilts forward and downward at the raised position, so that the person naturally becomes a middle waist state.
Therefore, even a weak person or a physically handicapped person such as an old person or a sick person can easily stand up.
【0054】なお、本発明は、上述の実施例以外にも設
計変更可能であり、例えば、リミットスイッチ30, 31
a,31b,31cの取付け位置は、図2と図3に示した位
置以外の場所とするも自由であり、リミットスイッチの
個数を変更してもよい。また、リミットスイッチ以外の
センサーを用いるも自由である。The present invention can be modified in design other than the above-mentioned embodiments. For example, the limit switches 30 and 31 can be changed.
The mounting positions of a, 31b, and 31c may be freely set at positions other than the positions shown in FIGS. 2 and 3, and the number of limit switches may be changed. It is also free to use sensors other than limit switches.
【0055】また、座部3の高さ寸法Hの所定値として
は、 300mm以外にも変更自由であり、 200mm〜 400mmの
範囲内に設定するのが望ましく、 250mm〜 350mmの範囲
内に設定するのが特に好ましい。なお、所定値が 200mm
よりも小さいと座部3が低過ぎて座り心地が悪くなる。
また、所定値が 400mmよりも大きいと、背が低い人の足
が浮いてしまうという欠点がある。Further, the predetermined value of the height H of the seat portion 3 can be freely changed to other than 300 mm, and is preferably set within the range of 200 mm to 400 mm, and set within the range of 250 mm to 350 mm. Is particularly preferable. The specified value is 200 mm
If it is smaller than that, the seat portion 3 becomes too low and the comfort of sitting becomes poor.
Further, if the predetermined value is larger than 400 mm, there is a drawback that the feet of a short person may float.
【0056】[0056]
【発明の効果】本発明は、上述の如く構成されるので、
次に記載する効果を奏する。Since the present invention is configured as described above,
The following effects are obtained.
【0057】請求項1記載の椅子によれば、着座状態に
於ける背部2の傾斜角度θの調整範囲が広くなり、老人
等が長時間快適に座ることができる。また、座部3を上
昇させて立ち上がる際に背部2を前傾させ得るので、背
部2が人の背中を支持して上体を楽に起こすことができ
る。かつ、座部3が上昇位置にて前方下傾となるので、
自然に中腰状態となり、病人や老人等の体が不自由な人
でも一人で楽に立ち上がることができる。さらに、構造
が簡単であり容易に製造できる。According to the chair of the first aspect, the adjustment range of the inclination angle θ of the back portion 2 in the sitting state is widened, and an old man or the like can sit comfortably for a long time. Further, since the back portion 2 can be tilted forward when the seat portion 3 is raised and stands up, the back portion 2 can support the back of a person and raise the upper body easily. Moreover, since the seat portion 3 tilts forward and downward at the raised position,
The person is naturally in a middle back position, and even a physically handicapped person such as a sick person or an elderly person can easily stand up by himself. Furthermore, the structure is simple and can be easily manufactured.
【0058】請求項2記載の椅子によれば、請求項1記
載のものと同様の効果を奏すると共に、前・後ローラ2
0, 21と平行リンク8の前縦部材6と後縦部材7の変形
や破損を防止でき、耐久性に優れる。また、背部2が鉛
直状態から僅かな角度前傾するのみで、座部3を大きく
前方下方へ傾斜させることができ、立ち上がりが一層容
易となる。According to the chair of claim 2, the same effect as that of claim 1 is obtained, and the front and rear rollers 2 are provided.
The front vertical member 6 and the rear vertical member 7 of the parallel links 8 and 0, 21 can be prevented from being deformed or damaged, and the durability is excellent. Further, the seat portion 3 can be largely tilted forward and downward only by tilting the back portion 2 forward from the vertical state by a slight angle, and the rising is further facilitated.
【0059】請求項3記載の椅子によれば、請求項1又
は2記載のものと同様の効果を奏すると共に、座部3に
人が着座した状態に於いて、背部2の傾斜角度θを15°
〜45°の広い範囲で調整できるため、座り心地が良好と
なる。また、背部2の傾斜角度θが15°よりも小さくな
らないので、上体が起き過ぎたり体全体が前方へ滑り落
ちる等の虞が無い。さらに、座部3を上昇させて立ち上
がる際に、背部2の傾斜角度θが15°よりも大きくなら
ない───即ち背部2が後方へ倒れ過ぎない───の
で、人が後ろへ倒れるのを防止できて安全であると共
に、背部2の強度を確保できる。According to the chair of claim 3, the same effect as that of claim 1 or 2 is obtained, and the inclination angle θ of the back part 2 is 15 when the person is seated on the seat part 3. °
It can be adjusted in a wide range of ~ 45 °, which makes it comfortable to sit on. Further, since the inclination angle θ of the back portion 2 does not become smaller than 15 °, there is no risk of the upper body rising too much or the whole body sliding forward. Furthermore, when the seat portion 3 is raised and stands up, the inclination angle θ of the back portion 2 does not become larger than 15 °, that is, the back portion 2 does not fall backward too much. It can be prevented and is safe, and the strength of the back portion 2 can be secured.
【図1】本発明の一実施例を示す側面図である。FIG. 1 is a side view showing an embodiment of the present invention.
【図2】断面正面図である。FIG. 2 is a sectional front view.
【図3】断面平面図である。FIG. 3 is a sectional plan view.
【図4】リクライニング駆動機構の作用説明図である。FIG. 4 is an explanatory view of the operation of the reclining drive mechanism.
【図5】要部の簡略説明図である。FIG. 5 is a simplified explanatory diagram of a main part.
【図6】座部下降状態を説明する側面図である。FIG. 6 is a side view illustrating a seat portion descending state.
【図7】座部上昇状態を説明する側面図である。FIG. 7 is a side view illustrating a raised state of a seat portion.
【図8】座部上昇状態を説明する側面図である。FIG. 8 is a side view illustrating a raised state of a seat portion.
【図9】立ち上がり可能状態を説明する側面図である。FIG. 9 is a side view illustrating a ready state for rising.
1 基台 2 背部 2a 骨格 5 上方水平部材 6 前縦部材 7 後縦部材 8 平行リンク 13 水平連結部材 19 座部取付部 20 前転動ローラ 21 後転動ローラ A リクライニング駆動機構 B 昇降駆動機構 C 傾動規制手段 H 高さ寸法 1 Base 2 Back 2a Skeleton 5 Upper horizontal member 6 Front vertical member 7 Rear vertical member 8 Parallel link 13 Horizontal connection member 19 Seat attachment part 20 Front rolling roller 21 Rear rolling roller A Reclining drive mechanism B Lifting drive mechanism C Tilt control means H Height dimension
───────────────────────────────────────────────────── フロントページの続き (72)発明者 玉山 博士 八尾市西弓削3丁目9番地 株式会社コム ラ製作所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Dr. Tamayama 3-9 Nishiyumi, Yao-shi Komura Co., Ltd.
Claims (3)
材5及び相互に平行な前縦部材6と後縦部材7とをもっ
て平行リンク8,8を形成し、かつ、該平行リンク8,
8にて背部2の骨格2aを前後傾動可能に形成し、座部
3の後端部に座部取付部19, 19を後方延伸状に設け、該
座部3を、上記背部2の骨格2aに、上記座部取付部1
9, 19とそれに枢着されると共に上記前縦部材6と後縦
部材7に夫々転動昇降可能な前・後転動ローラ20, 21と
を介して該骨格2aの前傾状態に於いて座部3が上昇位
置にて前方下傾となるように、取付けたことを特徴とす
る椅子。1. Parallel links 8, 8 are formed by a lower base 1 and an upper horizontal member 5 which are parallel to each other, and a front vertical member 6 and a rear vertical member 7 which are parallel to each other, and the parallel links 8 are formed. ,
At 8, the skeleton 2a of the back portion 2 is formed so as to be tiltable in the front-back direction, and the seat portion attachment portions 19, 19 are provided at the rear end portion of the seat portion 3 in a rearward extension shape. The above seat mounting part 1
In the forward tilted state of the skeleton 2a through 9, 19 and front and rear rolling rollers 20, 21 which are pivotally attached to the front vertical member 6 and the rear vertical member 7 and which can roll up and down respectively. A chair characterized in that the seat portion 3 is attached so that the seat portion 3 is tilted forward in the raised position.
態に於いて、該骨格2aの平行リンク8の後縦部材7に
対応する後転動ローラ21を、該平行リンク8の前縦部材
6に対応する前転動ローラ20よりも上方に配置した請求
項1記載の椅子。2. When the skeleton 2a of the back portion 2 is vertically erected, the rear rolling roller 21 corresponding to the rear vertical member 7 of the parallel link 8 of the skeleton 2a is attached to the front longitudinal direction of the parallel link 8. The chair according to claim 1, wherein the chair is arranged above the front rolling roller 20 corresponding to the member 6.
るリクライニング駆動機構Aと、座部3を昇降駆動させ
る昇降駆動機構Bと、座部3の高さ寸法Hが所定値より
も大きいときは背部2の傾斜角度θを−5°〜15°の間
で規制しかつ座部3の高さ寸法Hが上記所定値以下のと
きは背部2の傾斜角度θを15°〜45°の間で規制する傾
動規制手段Cと、を備えている請求項1又は2記載の椅
子。3. A reclining drive mechanism A for tilting the skeleton 2a of the back part 2 back and forth, a lift drive mechanism B for lifting and lowering the seat part 3, and a height dimension H of the seat part 3 larger than a predetermined value. Regulates the inclination angle θ of the back portion 2 between −5 ° and 15 °, and when the height dimension H of the seat portion 3 is less than or equal to the above predetermined value, the inclination angle θ of the back portion 2 is between 15 ° and 45 °. 3. The chair according to claim 1 or 2, further comprising: tilting regulation means C that is regulated by.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7152156A JP2706762B2 (en) | 1995-05-26 | 1995-05-26 | Chair |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7152156A JP2706762B2 (en) | 1995-05-26 | 1995-05-26 | Chair |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08317951A true JPH08317951A (en) | 1996-12-03 |
JP2706762B2 JP2706762B2 (en) | 1998-01-28 |
Family
ID=15534254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7152156A Expired - Fee Related JP2706762B2 (en) | 1995-05-26 | 1995-05-26 | Chair |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2706762B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005118124A (en) * | 2003-10-14 | 2005-05-12 | Nabtesco Corp | Hand-pushing operation type vehicle and operating device |
KR100740424B1 (en) * | 2005-03-24 | 2007-07-16 | 김록곤 | Wheelchair With Lifting Device |
JP2008067847A (en) * | 2006-09-13 | 2008-03-27 | Aisin Seiki Co Ltd | Legless chair |
-
1995
- 1995-05-26 JP JP7152156A patent/JP2706762B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005118124A (en) * | 2003-10-14 | 2005-05-12 | Nabtesco Corp | Hand-pushing operation type vehicle and operating device |
KR100740424B1 (en) * | 2005-03-24 | 2007-07-16 | 김록곤 | Wheelchair With Lifting Device |
KR100757649B1 (en) * | 2005-03-24 | 2007-09-10 | 김록곤 | Wheelchair With Lifting Device |
JP2008067847A (en) * | 2006-09-13 | 2008-03-27 | Aisin Seiki Co Ltd | Legless chair |
Also Published As
Publication number | Publication date |
---|---|
JP2706762B2 (en) | 1998-01-28 |
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