JP2000102569A - Wheelchair - Google Patents
WheelchairInfo
- Publication number
- JP2000102569A JP2000102569A JP10277633A JP27763398A JP2000102569A JP 2000102569 A JP2000102569 A JP 2000102569A JP 10277633 A JP10277633 A JP 10277633A JP 27763398 A JP27763398 A JP 27763398A JP 2000102569 A JP2000102569 A JP 2000102569A
- Authority
- JP
- Japan
- Prior art keywords
- caster
- driving wheel
- wheelchair
- seat
- frame
- 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
- Handcart (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、容易に段差乗り
越えが達成されるようにした車椅子に係り、特に、段差
乗り越えに際して、自動的に、進行方向後部へ重心移動
を行えると同時に、進行方向前部のキャスタを浮かせる
キャスタ上げを行える簡素な構成の車椅子に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair in which a person can easily climb over a step, and more particularly, when moving over a step, the center of gravity can be automatically moved to the rear in the traveling direction, and at the same time, the vehicle can be moved forward in the traveling direction. The present invention relates to a wheelchair having a simple configuration capable of raising a caster for floating a part of a caster.
【０００２】[0002]
【従来の技術】車椅子は、動輪及びキャスタを、共にで
きるだけ大きな車輪径とした台車機構を適用することに
より、比較的容易に段差乗り越えを行える。その反面、
車輪径が大きくなるほど、車椅子の小回り走行を困難に
する。2. Description of the Related Art A wheelchair can relatively easily get over a step by applying a bogie mechanism in which both a driving wheel and a caster have a wheel diameter as large as possible. On the other hand,
The larger the wheel diameter, the more difficult it is for the wheelchair to make a small turn.
【０００３】一方、車椅子の小回り走行を実現するた
め、動輪及びキャスタの車輪径を可及的に小さくする
と、段差乗り越えに多大な駆動トルクを必要としたり、
段差乗り越えが不可能となる場合が生じる。On the other hand, if the wheel diameters of the driving wheels and casters are made as small as possible in order to realize a small turning of a wheelchair, a large driving torque is required to get over a step.
In some cases, it is impossible to get over a step.
【０００４】そこで、例えば、特表平９−５０７７８５
号公報に開示されている車椅子では、座席を後方へ傾け
て、進行方向前部のキャスタを浮かせることにより、そ
のキャスタよりも大きな車輪径を持つ動輪で段差乗り越
えを行えるようにしている。Accordingly, for example, Japanese Patent Application Laid-Open No. 9-507785 is disclosed.
In the wheelchair disclosed in the publication, the seat is tilted rearward, and a caster at the front part in the traveling direction is floated, so that a wheel having a larger wheel diameter than the caster can be used to get over a step.
【０００５】また、特開平８−２５７０６７号公報に開
示されている車椅子では、車体フレームを、車輪を有す
る支持枠と、座席を有する上部枠とに分けて、支持枠に
対し上部枠を前後方向へ相対移動可能にし、段差乗り越
え時には、座席を有する上部枠を後方へ移動させて車椅
子後部側へ重心移動を行うことにより、進行方向前部の
キャスタを持ち上げやすくし、また、段差にそのキャス
タが乗り上げた後、座席を有する上部枠を前方へ移動さ
せて車椅子前部側へ重心移動を行うことにより、動輪の
段差乗り上げを容易にしている。In the wheelchair disclosed in Japanese Patent Application Laid-Open No. Hei 8-257067, the body frame is divided into a support frame having wheels and an upper frame having seats. When moving over a step, the upper frame with the seat is moved rearward to shift the center of gravity toward the rear of the wheelchair, so that the caster in the front part in the traveling direction can be easily lifted. After riding, the upper frame having the seat is moved forward to move the center of gravity to the front side of the wheelchair, thereby facilitating the running wheel riding on a step.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、従来の
前者構造の車椅子の場合、座席を後方へ傾かせる大掛か
りな構成であり、製作コストの観点で不利になるという
問題点がある。However, in the case of a conventional wheelchair having the former structure, the seat is tilted rearward, which is a large-scale structure, which is disadvantageous in terms of manufacturing cost.
【０００７】また、従来の後者構造の車椅子の場合、座
席を有する上部枠を前後方向へ移動させる構成のため、
車椅子の前後幅が変化されることになり、狭い走行路で
は壁面等と干渉しやすくなり、加えて、前後方向への重
心移動が可能であっても、段差乗り越えに際して、進行
方向前部のキャスタを浮かせるキャスタ上げができない
という問題点がある。In the case of the conventional wheelchair having the latter structure, the upper frame having the seat is moved in the front-rear direction.
The front and rear width of the wheelchair will be changed, and it will easily interfere with the wall surface etc. on narrow running roads.In addition, even if the center of gravity can be moved in the front and rear direction, the caster in the front part in the traveling direction There is a problem that it is not possible to raise the caster to make the floor float.
【０００８】更に、座席の移動と固定との２段階操作で
車椅子の重心移動を行えるようにしているため、操作が
煩わしいという問題点があった。Further, since the center of gravity of the wheelchair can be moved by two-stage operation of moving and fixing the seat, there is a problem that the operation is troublesome.
【０００９】本発明は、このような問題点に着目してな
されたものであり、その目的とするところは、段差乗り
越えに際して、自動的に、進行方向後部へ重心移動を行
えると同時に、進行方向前部のキャスタを浮かせるキャ
スタ上げを行える簡素な構成の車椅子を提供することに
ある。The present invention has been made in view of such a problem. It is an object of the present invention to automatically move the center of gravity to the rear in the traveling direction when climbing over a step, and at the same time, It is an object of the present invention to provide a wheelchair having a simple structure capable of raising a caster that floats a front caster.
【００１０】[0010]
【課題を解決するための手段】この出願の請求項１に記
載の発明は、座席及び第１キャスタを取り付けた座席フ
レームと、動輪を取り付けた動輪フレームとを有し、か
つ、その各フレーム間を第１リンク部材により互いに連
結し、前記座席フレームに対し、前記動輪フレームを前
後方向へ相対移動可能にした車体フレームを、具備し、
前記第１リンク部材は、前記第１キャスタの段差突き当
たりで当該第１キャスタが当て止め状態のとき、前記動
輪の駆動回転で第１キャスタ及び動輪間を狭めるように
前記座席フレームとの連結点を中心として回動され、ま
た、前記第１キャスタの段差乗り越えで当該第１キャス
タが当て止めを解除されたとき、第１キャスタ及び動輪
間を元の配置状態へ戻すように前記連結点を中心とる回
動で復旧される組み付け構造であることを特徴とすると
車椅子にある。The invention according to claim 1 of the present application has a seat frame to which a seat and a first caster are attached, and a driving wheel frame to which a driving wheel is attached, and a space between the respective frames. And a body frame that connects the driving wheel frame relative to the seat frame in the front-rear direction.
The first link member, when the first caster is in a contact stop state at the step contact of the first caster, sets a connection point with the seat frame so as to narrow the space between the first caster and the driving wheel by driving rotation of the driving wheel. The first caster is pivoted around the center, and when the first caster is released from the contact stop over the step of the first caster, the connection point is centered so as to return the first caster and the driving wheel to the original arrangement state. A wheelchair is characterized by an assembly structure that is restored by rotation.
【００１１】そして、この出願の請求項１に記載の発明
によれば、車椅子の進行方向前方の段差への第１キャス
タの突き当たりで、この第１キャスタが当て止め状態の
とき、動輪の駆動回転で第１キャスタ及び動輪間を狭め
るように第１リンク部材が座席フレームとの連結点を中
心として回動されて、動輪フレームが段差に向かって移
動することにより、座席が水平に維持されたまま、車椅
子の重心が自動的に進行方向とは逆の方向へ移動され、
同時に、第１キャスタに向かって動輪が移動されて座席
フレームの第１キャスタ取り付け部が吊り上げられるた
め、第１キャスタを浮かせるキャスタ上げが行われる。According to the invention described in claim 1 of the present application, when the first caster abuts on a step in the forward direction of the wheelchair when the first caster is in a contact stop state, the driving rotation of the driving wheel is performed. As a result, the first link member is rotated about the connection point with the seat frame so as to narrow the space between the first caster and the driving wheel, and the driving wheel frame moves toward the step, so that the seat is kept horizontal. , The center of gravity of the wheelchair is automatically moved in the direction opposite to the direction of travel,
At the same time, since the driving wheel is moved toward the first caster and the first caster mounting portion of the seat frame is lifted, the caster is lifted so that the first caster floats.
【００１２】また、第１キャスタの段差乗り越えで当該
第１キャスタの当て止めが解除された状態のとき、開放
で第１キャスタ及び動輪間を元の配置状態へ戻すように
第１リンク部材が復旧されることにより、第１キャスタ
の段差乗り越え完了で、自動的に、車椅子の重心が元の
位置まで復旧され、同時に第１キャスタを浮かせるキャ
スタ上げが解除される。Further, when the first caster is over the step and the stoppage of the first caster is released, the first link member is restored so that the first caster and the driving wheel are returned to the original arrangement when opened. By doing so, when the first caster has passed over the step, the center of gravity of the wheelchair is automatically restored to the original position, and at the same time, the raising of the caster for lifting the first caster is released.
【００１３】よって、前記した重心移動及びキャスタ上
げの各動作により第１キャスタが段差を乗り越えるまで
は、座席は水平に維持され、第１キャスタの段差乗り越
えが達成された時点から、動輪の段差乗り越えのために
座席が傾き、動輪の段差乗り越えで座席が水平に戻るの
で、車椅子の段差乗り越え動作が滑らかとなり、また、
その段差乗り越え動作時の座席の傾斜時間を短く抑える
ことができ、利用者に安心感を与えられよう。Therefore, the seat is kept horizontal until the first caster gets over the step by the above-described operations of moving the center of gravity and raising the caster, and from the time when the first caster gets over the step, the moving wheel gets over the step. Because of this, the seat is tilted and the seat returns to a horizontal position when the wheel runs over the step, so the wheelchair gets over the step smoothly,
The inclination time of the seat during the operation of climbing over the step can be suppressed short, and the user will be given a sense of security.
【００１４】この出願の請求項２に記載の前記車体フレ
ームは、前記車体フレームは、前記第１リンク部材とし
て、平行リンク部材を用い、該平行リンク部材により、
前記座席フレーム及び前記動輪フレームが互いに走行面
と平行な配置状態になる領域にて、当該両者間を連結し
たことを特徴とする請求項１に記載の車椅子にある。According to a second aspect of the present invention, in the vehicle body frame, the vehicle body frame uses a parallel link member as the first link member.
2. The wheelchair according to claim 1, wherein the seat frame and the driving wheel frame are connected to each other in a region where the two are arranged in parallel with a running surface.
【００１５】そして、この出願の請求項２に記載の発明
によれば、第１キャスタ及び動輪間の距離と、平行リン
ク部材の回動程度との対応関係を容易に把握でき、組立
及び保守点検等の観点で有用であろう。According to the invention described in claim 2 of this application, the correspondence between the distance between the first caster and the driving wheel and the degree of rotation of the parallel link member can be easily grasped, and the assembly, maintenance and inspection are performed. It will be useful from the viewpoint of the above.
【００１６】この出願の請求項３に記載の発明は、前記
動輪フレームは、第２リンク部材を用いて前記動輪を取
り付けと共に、第１キャスタとは前記動輪を挟んで対称
な位置関係で第２キャスタを取り付け配置したことを特
徴とする請求項１，２の何れかに記載の車椅子にある。According to a third aspect of the present invention, in the driving wheel frame, the driving wheel is attached using a second link member, and the second wheel is mounted on the second caster in a symmetrical positional relationship with the first caster with the driving wheel interposed therebetween. The wheelchair according to any one of claims 1 and 2, wherein a caster is mounted.
【００１７】そして、この出願の請求項３に記載の発明
によれば、例えば、車椅子の後退時には、請求項１，２
の何れかに記載の発明と同様に重心移動及びキャスタ上
げが行われて段差乗り越えを行えよう。また、車椅子の
前進時には、第２キャスタが進行方向前方の段差に突き
当たり、当て止めされたとき、動輪が第２キャスタに近
づき、第１のキャスタ側へ車椅子の重心移動がなされる
ため、第２のキャスタが浮き上がり、この状態で動輪が
前進駆動されるため、段差乗り越えが達成されよう。According to the invention described in claim 3 of the present application, for example, when the wheelchair is retracted, claims 1 and 2
The center of gravity is moved and the casters are raised in the same manner as in the invention described in any of the above, so that the vehicle can climb over a step. In addition, when the wheelchair moves forward, the second wheel hits the step in the forward direction of travel, and when the wheel is stopped, the driving wheel approaches the second caster and the center of gravity of the wheelchair moves toward the first caster. The caster is lifted up, and the driving wheel is driven forward in this state, so that a step over is achieved.
【００１８】また、この発明のように、異なる段差乗り
越え機構を組み合わせて、車椅子に適用した場合には、
その各機構相互の干渉を狭い空間で容易に回避できるよ
うになり、車椅子の小型化に貢献できよう。Further, when the present invention is applied to a wheelchair by combining different step-over mechanisms as in the present invention,
Interference between the mechanisms can be easily avoided in a narrow space, which can contribute to downsizing of a wheelchair.
【００１９】この出願の請求項４に記載の発明は、前記
車椅子は、座席中央の下部に前記動輪が配置されている
ことを特徴とする請求項１〜３の何れかに記載の車椅子
にある。According to a fourth aspect of the present invention, in the wheelchair according to any one of the first to third aspects, the wheelchair is provided at a lower portion of the center of the seat. .
【００２０】そして、この出願の請求項４に記載の発明
によれば、請求項１〜３の何れかに記載の発明と同様に
重心移動及びキャスタ上げが行われて段差乗り越えを行
えると共に、例えば、請求項３に記載の発明のように、
動輪の前後にキャスタをそれぞれ配置した構成を適用す
ることにより、静止位置で車椅子の向きを変える旋回動
作を可能にでき、狭い空間で旋回できる室内用小型車椅
子を構築できよう。According to the invention described in claim 4 of the present application, the center of gravity is moved and the casters are raised in the same manner as in the invention described in any of claims 1 to 3, so that the vehicle can climb over a step. , As in the invention of claim 3,
By applying the configuration in which the casters are arranged before and after the driving wheel, a turning operation of changing the direction of the wheelchair at a stationary position can be performed, and a small indoor wheelchair that can turn in a narrow space can be constructed.
【００２１】この出願の請求項５に記載の発明は、前記
車椅子は、座席後部或いは前部の下部に前記動輪が配置
されていることを特徴とする請求項１〜３の何れかに記
載の車椅子にある。According to a fifth aspect of the present invention, in the wheelchair, the driving wheel is arranged at a lower portion of a rear portion or a front portion of the seat. In a wheelchair.
【００２２】そして、この出願の請求項５に記載の発明
によれば、請求項１〜３の何れかに記載の発明と同様に
重心移動及びキャスタ上げが行われて段差乗り越えを行
えると共に、車椅子の前後幅が大きくなるので、走行時
の安定性が高くなり、路上走行に適した車椅子を構築で
きよう。According to the invention as set forth in claim 5 of the present application, the center of gravity is moved and the casters are raised in the same manner as in the invention as set forth in any of claims 1 to 3, so that the vehicle can go over a step and can be wheelchair-mounted. Because the front and rear width becomes large, the stability at the time of running will be high, and a wheelchair suitable for running on the road may be constructed.
【００２３】[0023]
【発明の実施の形態】以下、本発明にかかる車椅子の好
ましい実施形態について、図面に基づいて詳細に説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a wheelchair according to the present invention will be described below in detail with reference to the drawings.
【００２４】図１は本発明にかかる電動車椅子の第１実
施形態の外観を示す斜視図、図２は図１の電動車椅子が
平坦走路で静止若しくは平坦走路を走行している時の台
車機構の状態説明図、図３は図１の電動車椅子が後退し
て段差乗り越えを行う時の台車機構の状態説明図、図４
は図１の電動車椅子が前進して段差乗り越えを行う時の
台車機構の状態説明図である。同図において、１は動
輪、２は前部キャスタ（第２キャスタ）、３は後部キャ
スタ（第１キャスタ）、４は座席、５は背もたれ、６は
肘掛けアーム、７は足載せ台、８は足載せ台支持材、９
は車体フレーム、１０は前進時利用の第２リンク部材、
１１は後退時利用の第１リンク部材、１２はモータ，減
速器等からなる駆動部、１３はバッテリー、１４はエア
ダンパ、１５は座席傾斜動作用枢軸、１６は駆動操作
部、１７は駆動操作レバー、１８はダンパ開閉用レバ
ー、１９，２０はエアダンパ軸支用の枢軸である。FIG. 1 is a perspective view showing the appearance of a first embodiment of an electric wheelchair according to the present invention. FIG. 2 is a perspective view of the bogie mechanism when the electric wheelchair of FIG. 1 is stationary on a flat runway or running on a flat runway. FIG. 3 is an explanatory diagram of a state, and FIG. 3 is an explanatory diagram of a bogie mechanism when the electric wheelchair of FIG.
FIG. 3 is an explanatory view of a state of a bogie mechanism when the electric wheelchair of FIG. 1 moves forward to get over a step. In the figure, 1 is a driving wheel, 2 is a front caster (second caster), 3 is a rear caster (first caster), 4 is a seat, 5 is a backrest, 6 is an armrest arm, 7 is a footrest, 8 is Footrest support, 9
Is a body frame, 10 is a second link member used for forward movement,
Reference numeral 11 denotes a first link member for use during retreat, 12 denotes a driving unit including a motor and a speed reducer, 13 denotes a battery, 14 denotes an air damper, 15 denotes a pivot for seat tilting operation, 16 denotes a driving operation unit, and 17 denotes a driving operation lever. , 18 are damper opening / closing levers, 19 and 20 are pivots for supporting the air damper.
【００２５】この電動車椅子は、車体フレーム９の左右
両側それぞれに、動輪１を取り付け、また、この一対の
動輪１の前位置で一対の前部キャスタ２を取り付け、そ
の後位置で一対の後部キャスタ３を取り付けている。詳
しくは、それら構成を対象に、車体フレーム９を、座席
４及び後部キャスタ３を取り付けた座席フレーム９Ａ
と、動輪１及び前部キャスタ２を取り付けた動輪フレー
ム９Ｂとに分けて、その各フレーム間を第１リンク部材
１１により互いに連結し、座席フレーム９Ａに対し、動
輪フレーム９Ｂを前後方向へ相対移動可能にしている。
なお、動輪１は第２リンク部材１０を介して動輪フレー
ム９Ｂに取り付けている。In this electric wheelchair, a driving wheel 1 is mounted on each of the left and right sides of a body frame 9, a pair of front casters 2 is mounted at a position in front of the pair of driving wheels 1, and a pair of rear casters 3 is mounted at a position after the pair. Is installed. Specifically, for those configurations, the body frame 9 is attached to the seat frame 9A on which the seat 4 and the rear casters 3 are attached.
And a driving wheel frame 9B to which the driving wheel 1 and the front casters 2 are attached, and the respective frames are connected to each other by a first link member 11, so that the driving wheel frame 9B is relatively moved in the front-rear direction with respect to the seat frame 9A. Making it possible.
The driving wheel 1 is attached to the driving wheel frame 9B via the second link member 10.
【００２６】この車体フレーム９を用いて構成される台
車機構１２は、前進時の段差乗り越えに際しては、第２
リンク部材１０が利用され、また、後退時の段差乗り越
えに際しては、本発明の要部構成部材である第１リンク
部材１１が利用される。The bogie mechanism 12 constituted by using the body frame 9 is adapted to be driven by the second
The link member 10 is used, and the first link member 11, which is a main component of the present invention, is used when the vehicle retreats over a step.
【００２７】まず、第１リンク部材１１が利用される車
椅子の後退時の段差乗り越え動作について説明する。平
坦路を走行している際には、第１リンク部材１１及び第
２リンク部材１０は、共に図２に示される状態にある。First, a description will be given of the operation of climbing over a step when the wheelchair retreats using the first link member 11. When traveling on a flat road, the first link member 11 and the second link member 10 are both in the state shown in FIG.
【００２８】図３（ａ）に示されるように、後部キャス
タ３の段差突き当たりでこの後部キャスタ３が当て止め
状態のとき、動輪１の駆動回転で後部キャスタ３及び動
輪１間を狭めるように第１リンク部材１１が座席フレー
ム９Ａとの連結点を回転中心として回動される。このと
き、動輪フレーム９Ｂが車椅子の後部側へとずれ込むた
め、座席４が水平に維持されたまま、車椅子の重心が自
動的に進行方向とは逆の方向（車椅子の前部側）へ移動
される。同時に、後部キャスタ３に向かって動輪１が移
動されて座席フレーム９Ａの後部キャスタ３取り付け部
が吊り上げられるため、後部キャスタ３が浮き上がるキ
ャスタ上げが行われる。As shown in FIG. 3 (a), when the rear caster 3 is in contact with the rear caster 3 when the rear caster 3 hits a step, the driving wheel 1 rotates so that the distance between the rear caster 3 and the driving wheel 1 is reduced. One link member 11 is rotated about a connection point with the seat frame 9A as a rotation center. At this time, since the driving wheel frame 9B shifts toward the rear side of the wheelchair, the center of gravity of the wheelchair is automatically moved in the direction opposite to the traveling direction (the front side of the wheelchair) while the seat 4 is kept horizontal. You. At the same time, since the driving wheel 1 is moved toward the rear casters 3 and the mounting portions of the rear casters 3 of the seat frame 9A are lifted, the casters are lifted so that the rear casters 3 float.
【００２９】また、図３（ｂ）に示されるように、後部
キャスタ３の段差乗り越えで後部キャスタ３の当て止め
が解除されたとき、後部キャスタ３及び動輪１間を元の
配置状態へ戻すように第１リンク部材１１が座席フレー
ム９Ａとの連結点を回転中心とする回動で復旧される。
このため、後部キャスタ３の段差乗り越え完了で、自動
的に、車椅子の重心が元の位置まで復旧され、同時に後
部キャスタ３を浮かせるキャスタ上げが解除される。As shown in FIG. 3 (b), when the rear caster 3 is released from contact with the rear caster 3 when the rear caster 3 gets over the step, the space between the rear caster 3 and the driving wheel 1 is returned to the original arrangement. Then, the first link member 11 is restored by the rotation about the connection point with the seat frame 9A as the rotation center.
Therefore, when the rear caster 3 has completed the stepping over the step, the center of gravity of the wheelchair is automatically restored to the original position, and at the same time, the raising of the caster for lifting the rear caster 3 is released.
【００３０】次に、第２リンク部材１０が利用される車
椅子の前進時の段差乗り越え動作について説明する。Next, a description will be given of an operation of climbing over a step when the wheelchair using the second link member 10 is advanced.
【００３１】図４（ａ）に示されるように、前部キャス
タ２の段差突き当たりでこの前部キャスタ２が当て止め
状態のとき、動輪１の駆動回転で前部キャスタ２及び動
輪１間を狭めるように第２リンク部材１０が動輪フレー
ム９Ｂとの連結点を回転中心として回動される。このと
き、座席４が後方へ傾きつつ持ち上がる状態で車椅子の
重心が自動的に進行方向とは逆の方向へ移動され、同時
に、前部キャスタ２に向かって動輪１が移動されて動輪
フレーム９Ｂの前部キャスタ２取り付け部が吊り上げら
れるため、前部キャスタ２を浮かせるキャスタ上げが行
われる。As shown in FIG. 4 (a), when the front caster 2 is in contact with the front caster 2 when the front caster 2 abuts on a step, the driving wheel 1 rotates to narrow the space between the front caster 2 and the driving wheel 1. As described above, the second link member 10 is turned around the connection point with the driving wheel frame 9B as the center of rotation. At this time, the center of gravity of the wheelchair is automatically moved in a direction opposite to the traveling direction while the seat 4 is tilted rearward and lifted, and at the same time, the driving wheel 1 is moved toward the front caster 2 and the wheel frame 9B Since the front caster 2 mounting portion is lifted, the casters are lifted so that the front casters 2 float.
【００３２】また、図４（ｂ）に示されるように、前部
キャスタ２の段差乗り越えによるこの前部キャスタ２の
当て止め開放で前部キャスタ２及び動輪１間を元の配置
状態へ戻すように第２リンク部材１０が復旧される。こ
のため、前部キャスタ２の段差乗り越え完了で、自動的
に、車椅子の重心が元の位置まで復旧され、同時に前部
キャスタ２を浮かせるキャスタ上げが解除される。As shown in FIG. 4 (b), the front caster 2 is returned to its original arrangement by releasing the contact of the front caster 2 by stepping over the step of the front caster 2. Then, the second link member 10 is restored. For this reason, when the front caster 2 has completed the stepping over the step, the center of gravity of the wheelchair is automatically restored to the original position, and at the same time, the caster raising the front caster 2 is released.
【００３３】前述の如く、車椅子の前進時には第２リン
ク部材１０を利用して段差乗り越えを行うことができ、
また、後退時には第１リンク部材１１を利用して段差乗
り越えを行うことができる。特に、後退時には、前記し
た重心移動及びキャスタ上げの各動作により後部キャス
タ３が段差を乗り越えるまでは、座席４は水平に維持さ
れ、後部キャスタ３の段差乗り越えが達成された時点か
ら、動輪１の段差乗り越えのために座席が傾き、動輪１
の段差乗り越えで座席が水平に戻るので、車椅子の段差
乗り越え動作が滑らかとなり、また、その段差乗り越え
動作時の座席の傾斜時間を短く抑えることができ、利用
者に安心感を与えることができる。As described above, when the wheelchair moves forward, it is possible to use the second link member 10 to get over a step.
Further, at the time of retreat, the vehicle can climb over a step using the first link member 11. In particular, at the time of retreat, the seat 4 is maintained horizontal until the rear caster 3 gets over the step by the above-described operations of moving the center of gravity and raising the caster, and from the time when the rear caster 3 gets over the step, the driving wheel 1 The seat is tilted to get over the step and the driving wheel 1
Since the seat returns to a horizontal position when the vehicle goes over the step, the operation of moving over the step of the wheelchair becomes smooth, and the inclination time of the seat at the time of the operation of moving over the step can be reduced to give the user a sense of security.
【００３４】また、車体フレーム９に用いられている第
１リンク部材１１は、平行リンク構造の部材であり、こ
の平行リンク部材により、座席フレーム９Ａ及び動輪フ
レーム９Ｂが互いに走行面と平行な配置状態になる領域
にて、その両者間を連結している。このため、第１キャ
スタ及び動輪間の距離と、平行リンク部材の形状変化状
態との対応関係を容易に把握でき、組立及び保守点検等
の観点で有用である。The first link member 11 used in the vehicle body frame 9 is a member having a parallel link structure. With this parallel link member, the seat frame 9A and the driving wheel frame 9B are arranged in parallel with each other with the running surface. Are connected to each other in a region where For this reason, the correspondence between the distance between the first caster and the driving wheel and the shape change state of the parallel link member can be easily grasped, which is useful from the viewpoints of assembly, maintenance and inspection.
【００３５】また、動輪１の前後にキャスタ２，３を配
置した構成であるから、左右の動輪１の回転中心間を結
ぶ線上の略中間位置を回転中心として、車椅子の向きを
変える旋回動作を行えると共に、車椅子の向きを変える
旋回動作を開始する前に、車体フレーム９の前部を枢支
する座席傾斜動作用枢軸１５を回転中心として、座席４
の後部を上げる回動で座席４全体を前方へ傾斜させるこ
とが可能な座席傾斜機構を構成している。この構成によ
り、通常走行時には利用者が楽な姿勢を採ることがで
き、必要に応じて旋回半径を小さくできる。Further, since the casters 2 and 3 are arranged before and after the driving wheel 1, a turning operation of changing the direction of the wheelchair with the rotation center at a substantially intermediate position on a line connecting the rotation centers of the left and right driving wheels 1 is performed. Before starting the turning operation for changing the direction of the wheelchair, the seat 4 can be pivoted around the seat tilting pivot 15 for pivotally supporting the front part of the body frame 9.
This constitutes a seat tilting mechanism capable of tilting the entire seat 4 forward by turning the rear part upward. With this configuration, the user can take a comfortable posture during normal running, and the turning radius can be reduced as necessary.
【００３６】本発明にかかる電動車椅子の第２実施形態
を図５に示す。同図に示されるように、この電動車椅子
は、前記第１実施形態と同様に、台車機構１２は、車体
フレーム９を用いて構成される。相違点は、本実施形態
では前記実施形態とは反対向きに取り付けられている座
席４Ａを有しているため、前進時の段差乗り越えに際し
ては、本発明の要部構成部材である第１リンク部材１１
Ａが利用され、また、後退時の段差乗り越えに際して
は、第２リンク部材１０Ｂが利用される。これに伴い、
前記第１実施形態の後部キャスタが前部キャスタ２Ａと
なり、また、前記第１実施形態の前部キャスタが後部キ
ャスタ３Ａとなる。FIG. 5 shows a second embodiment of the electric wheelchair according to the present invention. As shown in the figure, in this electric wheelchair, a bogie mechanism 12 is configured using a body frame 9 as in the first embodiment. The difference is that the present embodiment has the seat 4A mounted in the opposite direction to the above-described embodiment, and therefore, when climbing over a step during forward movement, the first link member which is a main component of the present invention. 11
A is used, and the second link member 10B is used when climbing over a step when reversing. Along with this,
The rear casters of the first embodiment are front casters 2A, and the front casters of the first embodiment are rear casters 3A.
【００３７】このため、前部キャスタ２Ａの段差突き当
たりでこの前部キャスタ２Ａが当て止め状態のとき、動
輪１の駆動回転で前部キャスタ２Ａ及び動輪１間を狭め
るように第１リンク部材１１Ａが座席フレーム９Ａとの
連結点を回転中心として回動され、前部キャスタ２Ａに
向かって動輪フレーム９Ｂが移動される。このとき、座
席４Ａが水平に維持されたまま、車椅子の重心が自動的
に進行方向とは逆の方向（車椅子の後部側）へ移動さ
れ、同時に、前部キャスタ２Ａに向かって動輪１が移動
されて座席フレーム９Ａの前部キャスタ２Ａ取り付け部
が吊り上げられるため、前部キャスタ２Ａを浮かせるキ
ャスタ上げが行われる。For this reason, when the front caster 2A is in contact with the front caster 2A at the step contact of the front caster 2A, the first link member 11A is moved so as to narrow the space between the front caster 2A and the driving wheel 1 by driving rotation of the driving wheel 1. The wheel frame 9B is rotated about the connection point with the seat frame 9A as a rotation center, and the driving wheel frame 9B is moved toward the front caster 2A. At this time, while the seat 4A is kept horizontal, the center of gravity of the wheelchair is automatically moved in the direction opposite to the traveling direction (the rear side of the wheelchair), and at the same time, the driving wheel 1 moves toward the front caster 2A. As a result, the front caster 2A mounting portion of the seat frame 9A is lifted, so that the casters for lifting the front casters 2A are raised.
【００３８】また、前部キャスタ２Ａの段差乗り越えに
よるこの前部キャスタ２Ａの当て止め開放で前部キャス
タ２Ａ及び動輪１間を元の配置状態へ戻す第１リンク部
材１１Ａの形状復旧がなされる。このため、前部キャス
タ２Ａの段差乗り越え完了で、自動的に、車椅子の重心
が元の位置まで復旧され、同時に前部キャスタ２Ａを浮
かせるキャスタ上げが解除される。Further, the shape of the first link member 11A that returns the space between the front caster 2A and the driving wheel 1 to the original arrangement state is restored by releasing the stop of the front caster 2A by stepping over the step of the front caster 2A. For this reason, when the front caster 2A crosses the step, the center of gravity of the wheelchair is automatically restored to the original position, and at the same time, the caster raising the front caster 2A is released.
【００３９】一方、後部キャスタ３Ａの段差突き当たり
でこの後部キャスタ３Ａが当て止め状態のとき、動輪１
の駆動回転で後部キャスタ３Ａ及び動輪１間を狭める第
２リンク部材１０Ａの形状変化がなされる。このとき、
座席４Ａが後方へ傾きつつ持ち上がる状態で車椅子の重
心が自動的に進行方向とは逆の方向へ移動され、同時
に、後部キャスタ３Ａに向かって動輪１が移動されて動
輪フレーム９Ｂの後部キャスタ３Ａ取り付け部が吊り上
げられるため、後部キャスタ３Ａを浮かせるキャスタ上
げが行われる。On the other hand, when the rear caster 3A is in contact with the rear caster 3A at the step contact, the driving wheel 1
By the drive rotation of the second caster 3A, the shape of the second link member 10A that narrows the space between the rear caster 3A and the driving wheel 1 is changed. At this time,
When the seat 4A is tilted backward and lifted, the center of gravity of the wheelchair is automatically moved in the direction opposite to the traveling direction, and at the same time, the driving wheel 1 is moved toward the rear caster 3A to attach the rear caster 3A of the driving wheel frame 9B. Since the part is lifted, the caster is lifted to float the rear caster 3A.
【００４０】また、後部キャスタ３Ａの段差乗り越えに
よるこの後部キャスタ３Ａの当て止め開放で後部キャス
タ３Ａ及び動輪１間を元の配置状態へ戻すように第２リ
ンク部材１０Ａが復旧される。このため、後部キャスタ
３Ａの段差乗り越え完了で、自動的に、車椅子の重心が
元の位置まで復旧され、同時に後部キャスタ３Ａを浮か
せるキャスタ上げが解除される。Further, the second link member 10A is restored so that the rear caster 3A and the driving wheel 1 are returned to the original arrangement by opening and stopping the rear caster 3A by stepping over the step of the rear caster 3A. For this reason, when the rear caster 3A crosses the step, the center of gravity of the wheelchair is automatically restored to the original position, and at the same time, the raising of the caster for lifting the rear caster 3A is released.
【００４１】前述の如く、本実施形態では、車椅子の前
進時には第１リンク部材１１Ａを利用して段差乗り越え
を行うことができ、また、後退時には第２リンク部材１
０Ａを利用して段差乗り越えを行うことができる。特
に、前進時には、前記した重心移動及びキャスタ上げの
各動作により前部キャスタ２Ａが段差を乗り越えるまで
は、座席４Ａは水平に維持され、前部キャスタ２Ａの段
差乗り越えが達成された時点から、動輪１の段差乗り越
えのために座席が傾き、動輪１の段差乗り越えで座席が
水平に戻るので、車椅子の段差乗り越え動作が滑らかと
なり、また、その段差乗り越え動作時の座席の傾斜時間
を短く抑えることができ、利用者に安心感を与えること
ができる。As described above, in this embodiment, when the wheelchair moves forward, the first link member 11A can be used to climb over a step, and when the wheelchair moves backward, the second link member 1A can be used.
It is possible to get over a step using 0A. In particular, at the time of forward movement, the seat 4A is kept horizontal until the front caster 2A crosses the step due to the movement of the center of gravity and the operation of raising the caster. The seat is tilted to get over the step, and the seat returns to horizontal when the driving wheel 1 gets over the step. Therefore, the operation of getting over the step of the wheelchair becomes smooth and the inclination time of the seat during the operation of getting over the step can be shortened. Can provide a sense of security to the user.
【００４２】また、車体フレーム９に用いられている第
１リンク部材１１Ａは、平行リンク構造の部材であり、
この平行リンク部材により、座席フレーム９Ａ及び動輪
フレーム９Ｂが互いに走行面と平行な配置状態になる領
域にて、その両者間を連結している。このため、第１キ
ャスタ及び動輪間の距離と、平行リンク部材の回動程度
との対応関係を容易に把握でき、組立及び保守点検等の
観点で有用である。The first link member 11A used for the vehicle body frame 9 is a member having a parallel link structure.
By the parallel link member, the seat frame 9A and the driving wheel frame 9B are connected to each other in a region where the seat frame 9A and the driving wheel frame 9B are arranged in parallel with the running surface. For this reason, the correspondence between the distance between the first caster and the driving wheel and the degree of rotation of the parallel link member can be easily grasped, which is useful from the viewpoint of assembly, maintenance and inspection.
【００４３】このため、前記第１，第２の各実施形態と
同様に重心移動及びキャスタ上げが行われて段差乗り越
えを行えると共に、車椅子の前後幅が大きくなるので、
走行時の安定性が高くなり、路上走行に適した車椅子を
構築できる。For this reason, as in the first and second embodiments, the center of gravity is moved and the casters are raised to move over a step, and the front and rear width of the wheelchair is increased.
The stability at the time of running is improved, and a wheelchair suitable for running on the road can be constructed.
【００４４】なお、前述した各実施形態は、電動車椅子
についてであるが、本発明は、手動の車椅子に適用でき
るのは勿論のことである。Although each of the above-described embodiments relates to an electric wheelchair, the present invention can of course be applied to a manual wheelchair.
【００４５】[0045]
【発明の効果】以上の説明で明らかなように、段差乗り
越えに際して、自動的に、進行方向後部へ重心移動を行
えると同時に、進行方向前部のキャスタを浮かせるキャ
スタ上げを行える簡素な構成の車椅子を提供することが
できる。As is apparent from the above description, a wheelchair having a simple structure that can automatically move the center of gravity to the rear in the traveling direction and raise the caster to float the front in the traveling direction when climbing over a step. Can be provided.
【図１】本発明にかかる電動車椅子の第１実施形態の外
観を示す斜視図である。FIG. 1 is a perspective view showing an appearance of a first embodiment of an electric wheelchair according to the present invention.
【図２】図１の電動車椅子が平坦走路で静止若しくは平
坦走路を走行している時の台車機構の状態説明図であ
る。FIG. 2 is an explanatory view of a state of a bogie mechanism when the electric wheelchair of FIG. 1 is stationary on a flat runway or running on a flat runway.
【図３】図１の電動車椅子が後退して段差乗り越えを行
う時の台車機構の状態説明図である。FIG. 3 is an explanatory diagram of a state of a bogie mechanism when the electric wheelchair of FIG. 1 is moved backward to get over a step.
【図４】図１の電動車椅子が前進して段差乗り越えを行
う時の台車機構の状態説明図である。FIG. 4 is an explanatory view of a state of a bogie mechanism when the electric wheelchair of FIG. 1 moves forward to go over a step.
【図５】本発明にかかる電動車椅子の第２実施形態の構
成説明図である。FIG. 5 is a configuration explanatory view of a second embodiment of the electric wheelchair according to the present invention.
【図６】本発明にかかる電動車椅子の第３実施形態の構
成説明図である。FIG. 6 is a configuration explanatory view of a third embodiment of the electric wheelchair according to the present invention.
１ 動輪 ２ 前部キャスタ（第２キャスタ） ２Ａ 後部キャスタ（第２キャスタ） ２Ｂ 前部キャスタ（第１キャスタ） ３ 後部キャスタ（第１キャスタ） ３Ａ 前部キャスタ（第１キャスタ） ３Ｂ 補助キャスタ ４，４Ａ，４Ｂ 座席 ５ 背もたれ ６ 肘掛けアーム ７ 足載せ台 ８ 足載せ台支持材 ９ 車体フレーム １０ 前進時利用の第２リンク部材 １０Ａ 後退時利用の第２リンク部材 １１ 後退時利用の第１リンク部材 １１Ｂ 前進時利用の第１リンク部材 １１Ｃ 前進時利用の第１リンク部材 １２ モータ，減速器等からなる駆動部 １３ バッテリー １４ エアダンパ １５ 座席傾斜動作用枢軸 １６ 駆動操作部 １７ 駆動操作レバー １８ ダンパ開閉用レバー １９，２０ エアダンパ軸支用の枢軸 Reference Signs List 1 wheel 2 front caster (second caster) 2A rear caster (second caster) 2B front caster (first caster) 3 rear caster (first caster) 3A front caster (first caster) 3B auxiliary caster 4, 4A, 4B Seat 5 Backrest 6 Armrest arm 7 Footrest 8 Footrest support 9 Body frame 10 Second link member for forward use 10A Second link member for backward use 11 First link member for backward use 11B First link member for use at the time of forward movement 11C First link member for use at the time of forward movement 12 Driving unit composed of motor, reducer, etc. 13 Battery 14 Air damper 15 Axis for seat tilting operation 16 Drive operation unit 17 Drive operation lever 18 Damper opening / closing lever 19,20 Axis for supporting air damper
───────────────────────────────────────────────────── フロントページの続き (72)発明者 春原 英雄 東京都杉並区高井戸東２丁目４番５号 ミ サワホーム株式会社内 (72)発明者 堀 光生 東京都杉並区高井戸東２丁目４番５号 ミ サワホーム株式会社内 (72)発明者 吉田 勉 東京都杉並区高井戸東２丁目４番５号 ミ サワホーム株式会社内 (72)発明者 鈴木 政善 東京都江東区亀戸２丁目６番35号 株式会 社ユニカム内 (72)発明者 西平 哲也 東京都江東区亀戸２丁目６番35号 株式会 社ユニカム内 (72)発明者 西平 守和 東京都江東区亀戸２丁目６番35号 株式会 社ユニカム内 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hideo Sunohara 2-4-5 Takaido Higashi, Suginami-ku, Tokyo Inside Misawa Home Co., Ltd. (72) Inventor Mitsuo Hori 2-4.5-5 Takaido Higashi, Suginami-ku, Tokyo Misawa Homes Co., Ltd. (72) Inventor Tsutomu Yoshida 2-4-5 Takaido Higashi, Suginami-ku, Tokyo Misawa Homes Co., Ltd. (72) Masayoshi Suzuki 2-6-35 Kameido, Koto-ku, Tokyo Co., Ltd. Inside Unicom (72) Inventor Tetsuya Nishihira 2-6-35 Kameido, Koto-ku, Tokyo Inside Unicom Corporation (72) Inventor Moriwashi Nishihira 2-6-35 Kameido, Koto-ku, Tokyo Inside Unicom Corporation
Claims (5)
フレームと、動輪を取り付けた動輪フレームとを有し、
かつ、その各フレーム間を第１リンク部材により互いに
連結し、前記座席フレームに対し、前記動輪フレームを
前後方向へ相対移動可能にした車体フレームを、具備
し、 前記第１リンク部材は、前記第１キャスタの段差突き当
たりで当該第１キャスタが当て止め状態のとき、前記動
輪の駆動回転で第１キャスタ及び動輪間を狭めるように
前記座席フレームとの連結点を中心として回動され、ま
た、前記第１キャスタの段差乗り越えで第１キャスタの
当て止めが解除された状態のとき、第１キャスタ及び動
輪間を元の配置状態へ戻すように前記連結点を中心とす
る回動で復旧される組み付け構造であることを特徴とす
ると車椅子。1. A seat frame to which a seat and a first caster are attached, and a driving wheel frame to which a driving wheel is attached,
And a body frame that connects the respective frames to each other with a first link member and makes the driving wheel frame relatively movable in the front-rear direction with respect to the seat frame, wherein the first link member includes the first link member. When the first caster is in a contact stop state at the step contact of one caster, the driving wheel is rotated around the connection point with the seat frame so as to narrow the space between the first caster and the driving wheel by driving rotation of the driving wheel, and When the first caster is moved over the step and the contact of the first caster is released, the assembly is restored by the rotation about the connection point so that the space between the first caster and the driving wheel is returned to the original arrangement state. A wheelchair is characterized by its structure.
材として、平行リンク部材を用い、該平行リンク部材に
より、前記座席フレーム及び前記動輪フレームが互いに
走行面と平行な配置状態になる領域にて、当該両者間を
連結したことを特徴とする請求項１に記載の車椅子。2. The vehicle body frame according to claim 1, wherein a parallel link member is used as the first link member, and the seat frame and the driving wheel frame are arranged in a parallel state with each other by the parallel link member. The wheelchair according to claim 1, wherein the two are connected to each other.
用いて前記動輪を取り付けと共に、第１キャスタとは前
記動輪を挟んで対称な位置関係で第２キャスタを取り付
け配置したことを特徴とする請求項１，２の何れかに記
載の車椅子。3. The driving wheel frame is characterized in that the driving wheel is mounted using a second link member, and a second caster is mounted and disposed in a symmetrical relationship with the first caster with respect to the driving wheel. The wheelchair according to claim 1.
輪が配置されていることを特徴とする請求項１〜３の何
れかに記載の車椅子。4. The wheelchair according to claim 1, wherein the driving wheel is arranged in a lower portion of a center of the seat.
部に前記動輪が配置されていることを特徴とする請求項
１〜３の何れかに記載の車椅子。5. The wheelchair according to claim 1, wherein the driving wheel is arranged at a lower part of a rear portion or a front portion of the seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10277633A JP2954204B1 (en) | 1998-09-30 | 1998-09-30 | wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10277633A JP2954204B1 (en) | 1998-09-30 | 1998-09-30 | wheelchair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2954204B1 JP2954204B1 (en) | 1999-09-27 |
| JP2000102569A true JP2000102569A (en) | 2000-04-11 |
Family
ID=17586156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10277633A Expired - Fee Related JP2954204B1 (en) | 1998-09-30 | 1998-09-30 | wheelchair |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2954204B1 (en) |
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| Publication number | Publication date |
|---|---|
| JP2954204B1 (en) | 1999-09-27 |
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| LAPS | Cancellation because of no payment of annual fees |