EP0231718B1 - Collapsible, elevating wheel chair - Google Patents

Collapsible, elevating wheel chair Download PDF

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Publication number
EP0231718B1
EP0231718B1 EP86450027A EP86450027A EP0231718B1 EP 0231718 B1 EP0231718 B1 EP 0231718B1 EP 86450027 A EP86450027 A EP 86450027A EP 86450027 A EP86450027 A EP 86450027A EP 0231718 B1 EP0231718 B1 EP 0231718B1
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EP
European Patent Office
Prior art keywords
branch
articulated
chassis
wheelchair according
compasses
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP86450027A
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German (de)
French (fr)
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EP0231718A1 (en
Inventor
Joseph Arnas
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Individual
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Individual
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Priority to AT86450027T priority Critical patent/ATE66584T1/en
Publication of EP0231718A1 publication Critical patent/EP0231718A1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/14—Standing-up or sitting-down aids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1054—Large wheels, e.g. higher than the seat portion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/128—Rests specially adapted therefor, e.g. for the head or the feet for feet

Definitions

  • the present invention relates to a folding and lifting wheelchair for the disabled, according to the preamble of claim 1.
  • a wheelchair of this type is described in EP-A-0 146 660.
  • EP-A-0 146660 International Diffusion Consumer
  • This lifting device comprises two lifting assemblies arranged on either side of the seat, folding or not, constituted respectively by an articulated deformable parallelogram.
  • the extension or folding of each parallelogram is controlled by a lever system with geometric locking in position which frees the folding assembly and allows its expansion under the action of a gas spring or its retraction and its locking in the folded position .
  • the chair according to this patent application is not provided with a foldable frame. If it is mentioned the possibility of making a foldable frame constituted by two lateral frames joined to each other by horizontal crosspieces with median break, the fact remains that the indications given in this request cannot lead the realization of the invention as defined in the characterizing part of claim 1 of this patent.
  • patent CH 608,186 (VALUTEC AG) describes a folding and lifting wheelchair.
  • This chair is made up of two sets forming a rolling frame, held at a distance by a set of articulated links.
  • Each set has an elevating structural element, consisting of a deformable articulated parallelogram. The transition from the horizontal, seated position to the upright vertical position is controlled by an electric motor.
  • the chair described in this patent is particularly heavy, which is contrary to the aim sought which is to ensure maximum autonomy and freedom of movement for disabled people lacking physical strength.
  • this chair is equipped with two locking members, one of which is associated with the lifting structure and the other with the chassis, so that the folding or unfolding of the chair requires two prior locking or unlocking operations, which is a nuisance. for a user with reduced motor skills.
  • the invention aims to overcome the above drawbacks by providing a wheelchair, folding and lifting, which is light, easy to handle, which effortlessly allows the user intermediate positions between the sitting position and the standing position (vertical ) and whose folding and unfolding is simplified.
  • the folding and lifting wheelchair comprises a rolling chassis designated by generic reference 1 and an elevating structure designated by generic reference 2.
  • the rolling chassis consists of two parallel frames 3 of rectangle shape respectively provided with a drive wheel and a directional wheel. Each frame is connected by two crosspieces, a front 4 and a rear 5 to the lower branch 6 of a central and axial compass to the chassis and the seat.
  • the lower branch 6 is fixed in position.
  • the sleepers 4/4 and 5/5 are mounted articulated to allow the folding of the chassis by bringing the frames 3 towards the fixed branch 6 of the central compass forming beam.
  • Each of these crosspieces 4/5 is of rectangular or trapezoidal conformation with hinge clevis on the uprights of the corresponding frame and on the lower fixed branch 6 of the compass.
  • each of the frames 3 of the rolling chassis is mounted oscillating.
  • the central beam 6 of the compass are arranged, at each of its ends yokes 6A articulated to the beam 6 and in which are mounted the rods 4-5 which are also fixed in an articulated manner to the frame 3 of the corresponding chassis .
  • each frame 3 On each frame 3 is mounted in articulation a deformable parallelogram constituting an element of the lifting structure 2.
  • Each parallelogram is constituted (FIG. 1) of a horizontal upper upright 7 articulated in 8 on the vertical frontal upright of the frame 3 and of an upright lower 9 articulated at 10 on the horizontal upright 11 of the frame 3 behind the articulation point 8 previously described.
  • the uprights 7 and 9 of the deformable parallelogram are connected by a rear link 12 articulated to one and to the other.
  • the link 12 is constituted by a metal plate substantially in the shape of a diamond, which extends above the point of articulation of the upright 7 around which it makes a rotational movement. It extends above said point of articulation to serve as a base for articulated fixing of the upright 13 of the backrest. Said link is provided at the rear of the point of articulation on the upright 7 of the deformable parallelogram with a fixing bracket for a horizontal folding crosspiece which joins together the deformable parallelograms of the lifting structure and will be described later.
  • the upright 13 of the backrest has an armrest 14 mounted on a articulation and connected to the rear of its articulation point by a chain 15 shown in fixed broken line, either in the extension of the upright 7, or in the extension of the upright 9 so that the armrest is tilted or either maintained in position perpendicular to the backrest during elevation.
  • a canvas stretched between the deformable parallelograms constitutes the seat and another canvas is stretched between the uprights of the backrest.
  • the horizontal folding cross member which brings together the deformable parallelograms at the rear at the level of the links 12 in the yokes of which it is fixed, consists of two sections 16 and 17 each fixed in an articulated manner in one of the yokes of the corresponding link 12 and also articulated in a clevis 18 of a junction plate 19 with handle 20 for maneuvering.
  • the connecting plate 19 is provided with a horizontal upright 20A on which the sections 16/17 of the crosspiece locking are aligned. It also has a movable lock 21 constituted by a blade articulated to the plate between the articulation points of the sections 16/17 and which, when they are aligned with one another and with the upright 20 forming a shoulder, covers the said sections 16, 17 and the amount 20 by preventing their separation.
  • the plate 19 is provided with a lower yoke 21A to which the upper branch 22 of the compass is hinged. central connected to the lower branch 6 of said compass, said branch 6 constituting an axial beam.
  • the branch 6 has a horizontal portion and a vertical front portion 23 at the end of which the branch 22 is articulated. Between a rear end of branch 22 and the front end of branch 6 is hingedly mounted a gas spring 24.
  • the gas spring 24 is mounted articulated on the rear end of the branch 22 of the axial compass and it is mounted articulated on the lower branch 6 at the junction of its horizontal portion and its vertical front portion 23.
  • a cam 25 with two branches is articulated in its center 26 on the beam of the compass. Its upper branch of the cam receives the end of the gas spring and its lower branch is locked in position on the beam 6 around the point of articulation.
  • the cam 25 is locked in position by a pin passing through its lower branch and being housed in one of the orifices 27 formed in an arc on the beam 6. This arrangement makes an adjustment of the spring action point gas to adapt it to the weight of the user.
  • a complementary gas spring 28 is mounted between the beam 6 and the branch 22 of the compass.
  • the gas springs primary and possibly secondary, are controlled by one of the two mounted levers 29 laterally to the chassis 3.
  • the levers 29 are carried in an inclined sleeve 30 with which they cooperate by a latching system making it possible either to retract them (FIG. 1) or to put them in the operating position (FIG. 2). Only one of the levers controls the gas spring, the other being used as a fulcrum.
  • the lever 29 controlling the gas spring is mounted on a part 30 connected by an axis of rotation to the chassis 3.
  • the end of the part 30 receives a chain 31 which rotates 90 ° around a wheel 32.
  • the chain 31 is connected to a rocker piece 33 movably mounted on the yoke receiving the gas spring and which actuates the valve thereof by pushing back lever 29 or forward, which controls the function lifting or folding in a seated position.
  • the invalid exerts a traction on the levers 29 and a push to sit.
  • the armchair according to the invention is provided at the front with an articulated footrest system so that the footrests are above ground level when seated and come to rest on the ground when 'elevation, which gives increased stability and greater safety to the user.
  • the footrest system consists of a footrest platform 34 mounted on a support 35.
  • the support 35 is fixed in a lockable or unlockable manner to allow its removal or its rotation towards the axis of the chassis or away from said axis on a tilting part 36.
  • the part 36 is a yoke which encloses the vertical front upright of the chassis 3 and which is fixedly mounted on an inclined rod 37 and articulated to the lower upright of the chassis 3 substantially at its center.
  • the tilting part 36 is connected by a rod 38 to the end of the lower upright 9 of the corresponding deformable parallelogram.
  • the length of the rod 38 provided for this purpose with a thread, is adjustable to adjust the amplitude of the tilting of the footrest system.
  • the part 36 swings forward, which brings the toe clips towards the ground and resting on it.
  • the part 36 rocks backwards, which raises the toe clips.
  • the platform 34 of at least one of the toe clips is provided with a lower stop 39 with no adjusting screw and elastic pad for bearing on the ground.
  • the platforms 34 of the toe clips are mounted tilting upwards to retract them and are provided with means making it possible to secure them in the same plane. These means consist of a pin 40 of one of the platforms on which fits a jumper 42 of the other platform.
  • the lifting structure is provided in known manner with holding straps at the bust and the user's knees.
  • the entire chair is folded back after the lock has been released by folding the rear horizontal cross member, which brings the frames 3/5 closer together to fold the links 4/5 towards the central beam 6.
  • the chair according to the invention has the advantage of being easy to handle and light.

Abstract

The wheelchair is of the type comprising a chassis (1) equipped with rolling members, the said chassis (1) being collapsible so as to bring the side rolling members closer to one another by reduction of the space between them. The chair possesses an elevating structure (2) articulated to the chassis (1) and consisting of two deformable parallelograms, between which the seat is mounted and which are movable from a substantially horizontal, so-called seated position to a substantially vertical, so- called upright position. The chair is equipped, between the side components of the chassis (1), with an axial caliper, to one, fixed lower arm (6) of which the components of the rolling chassis (1) are linked in an articulated and collapsible manner, and to the other arm (22) of which, the said arm (22) being articulated and movable, the deformable parallelograms of the elevating structure (2) are linked in an articulated manner by means of a centrally folding cross-bar (16) with a latch (21) which controls the collapsing or the locking in the open position of the elevating structure (2) and the rolling chassis (1), a controllable, gas-operated jack (24) being arranged between the arms (6, 22) of the caliper. <IMAGE>

Description

La présente invention concerne un fauteuil roulant pliant et élévateur pour handicapé, selon le préambule de la revendication 1. Un tel fauteuil roulant de ce type est décrit dans EP-A-0 146 660.The present invention relates to a folding and lifting wheelchair for the disabled, according to the preamble of claim 1. Such a wheelchair of this type is described in EP-A-0 146 660.

Il est connu de réaliser des fauteuils roulants capables d'être repliés par rapprochement des organes de roulement latéraux par rapport à l'axe médian du siège pour réduire leur encombrement. On a depuis de nombreuses années adjoint à ce type de fauteuils roulants ainsi qu'aux fauteuils roulants non pliants une fonction élévatrice.
Cette fonction élévatrice permet de faire passer l'utilisateur, handicapé physique, d'une position assise à une position debout, verticale ou sensiblement verticale.
C'est un progrès important au niveau du mode de vie des handicapés et de ses conséquences sur leur santé physique et psychique.It is known to produce wheelchairs capable of being folded up by bringing the lateral rolling members closer to the center line of the seat to reduce their bulk. For many years, this type of wheelchair and non-folding wheelchair have been associated with an elevating function.
This lifting function allows the user, physically handicapped, to pass from a sitting position to a standing, vertical or substantially vertical position.
This is an important advance in terms of the lifestyle of the disabled and its consequences on their physical and mental health.

C'est ainsi que le EP-A-0 146660 (International Diffusion Consommateur) décrit un dispositif élévateur pour fauteuil roulant.
Ce dispositif élévateur comprend deux ensembles élévateurs disposés de part et d'autre du siège, pliant ou non, constitué respectivement par un parallélogramme déformable articulé.
L'extension ou le repliement de chaque parallélogramme est commandé par un système de levier à blocage géométrique en position qui libère l'ensemble pliant et permet son expansion sous l'action d'un ressort à gaz ou sa rétraction et son blocage en position replié.This is how EP-A-0 146660 (International Diffusion Consumer) describes a lifting device for a wheelchair.
This lifting device comprises two lifting assemblies arranged on either side of the seat, folding or not, constituted respectively by an articulated deformable parallelogram.
The extension or folding of each parallelogram is controlled by a lever system with geometric locking in position which frees the folding assembly and allows its expansion under the action of a gas spring or its retraction and its locking in the folded position .

Il est nécessaire, selon ce brevet, à l'utilisateur de manoeuvrer deux leviers à blocage géométrique, ce qui, d'une part, nécessite une certaine force physique et d'autre part, interdit l'usage l'usage autonome aux personnes qui ne disposent que d'un seul bras.
D'autre part, selon ce brevet, le maintien de l'utilisateur en positions intermédiaires, entre la position assise et la position verticale, positions où la structure élévatrice est bloquée, nécessite de la part de celui-ci un effort, pas toujours possible, sur les leviers pour contrarier l'action du ressort à gaz.According to this patent, it is necessary for the user to operate two geometrically locked levers, which, on the one hand, requires a certain physical force and, on the other hand, prohibits the use autonomous use for people who only have one arm.
On the other hand, according to this patent, maintaining the user in intermediate positions, between the sitting position and the vertical position, positions where the lifting structure is blocked, requires from the latter an effort, not always possible. , on the levers to counteract the action of the gas spring.

Le fauteuil selon cette demande de brevet n'est pas pourvu d'un châssis pliable.
S'il est évoqué la possibilité de réaliser un châssis pliable constitué par deux cadres latéraux réunis l'un à l'autre par des traverses horizontales avec brisure médiane, il n'en demeure pas moins que les indications données dans cette demande ne peuvent conduire à la réalisation de l'invention telle que définie dans la partie caractérisante de la revendication 1 du présent brevet.The chair according to this patent application is not provided with a foldable frame.
If it is mentioned the possibility of making a foldable frame constituted by two lateral frames joined to each other by horizontal crosspieces with median break, the fact remains that the indications given in this request cannot lead the realization of the invention as defined in the characterizing part of claim 1 of this patent.

De même, le brevet CH 608.186 (VALUTEC AG) décrit un fauteuil roulant pliant et élévateur.
Ce fauteuil est constitué par deux ensembles formant châssis roulant, maintenus à l'écartement par un ensemble de biellettes articulées.
Chaque ensemble est doté d'un élément de structure élévatrice, constitué par un parallélogramme déformable articulé. Le passage de la position horizontale, assise, à la position verticale debout est commandé par un moteur électrique.Similarly, patent CH 608,186 (VALUTEC AG) describes a folding and lifting wheelchair.
This chair is made up of two sets forming a rolling frame, held at a distance by a set of articulated links.
Each set has an elevating structural element, consisting of a deformable articulated parallelogram. The transition from the horizontal, seated position to the upright vertical position is controlled by an electric motor.

Le fauteuil décrit dans ce brevet est particulièrement lourd, ce qui est contraire au but recherché qui est d'assurer un maximum d'autonomie et de liberté de mouvement à des handicapés dépourvus de force physique.The chair described in this patent is particularly heavy, which is contrary to the aim sought which is to ensure maximum autonomy and freedom of movement for disabled people lacking physical strength.

En outre, ce fauteuil est équipé de deux organes de verrouillage dont un est associé à la structure élévatrice et l'autre au châssis si bien que le repliement ou le déploiement du fauteuil suppose deux opérations de verrouillage ou déverrouillage préalables, ce qui est une gêne pour un utilisateur à motricité réduite.In addition, this chair is equipped with two locking members, one of which is associated with the lifting structure and the other with the chassis, so that the folding or unfolding of the chair requires two prior locking or unlocking operations, which is a nuisance. for a user with reduced motor skills.

Un autre inconvénient des fauteuils de type connu tels que décrits par le brevet CH A 608.186 est qu'ils présentent deux systèmes de pliage indépendants, un pour le châssis roulant et un pour la structure élévatrice.
Cela oblige l'utilisateur à une double manoeuvre.Another drawback of known type of armchairs as described by patent CH A 608,186 is that they have two independent folding systems, one for the rolling chassis and one for the lifting structure.
This forces the user to perform a double maneuver.

L'invention vise à obvier aux inconvénients ci-dessus en réalisant un fauteuil roulant, pliant et élévateur, qui soit léger, facile à manipuler, qui autorise sans effort de l'utilisateur des positions intermédiaires entre la position assise et la position debout (verticale) et dont le pliage et le dépliage soit simplifié.The invention aims to overcome the above drawbacks by providing a wheelchair, folding and lifting, which is light, easy to handle, which effortlessly allows the user intermediate positions between the sitting position and the standing position (vertical ) and whose folding and unfolding is simplified.

Le problème est résolu par les caractèristiques de la seconde partie de la revendication 1.
D' autres avantages et caractéristiques de l'invention apparaîtront à la lecture de la description ci-après d'une forme de réalisation de l'invention donnée à titre d'exemple non limitatif et illustrée par les dessins joints dans lesquels :

  • la figure 1 est une vue latérale du fauteuil selon l'invention représenté en position repliée dite assise,
  • la figure 2 est une vue latérale du fauteuil selon l'invention représenté en position d'élévation,
  • la figure 3 est une vue du fauteuil selon l'invention en position élévation (vue de l'arrière),
  • la figure 4 est une vue des moyens d'actionnement du ressort à gaz.
  • la figure 5 est une vue de face du châssis roulant suivant une autre forme de réalisation du fauteuil selon l'invention.
The problem is solved by the features of the second part of claim 1.
Other advantages and characteristics of the invention will appear on reading the following description of an embodiment of the invention given by way of non-limiting example and illustrated by the accompanying drawings in which:
  • FIG. 1 is a side view of the chair according to the invention shown in the folded position known as the seat,
  • Figure 2 is a side view of the chair according to the invention shown in elevation position,
  • FIG. 3 is a view of the chair according to the invention in elevation position (seen from the rear),
  • Figure 4 is a view of the actuating means of the gas spring.
  • Figure 5 is a front view of the rolling frame according to another embodiment of the chair according to the invention.

Tel que représenté aux dessins annexés, le fauteuil roulant, pliant et élévateur selon l'invention, comprend un châssis roulant désigné par la référence générique 1 et une structure élévatrice désignée par la référence générique 2.As shown in the accompanying drawings, the folding and lifting wheelchair according to the invention comprises a rolling chassis designated by generic reference 1 and an elevating structure designated by generic reference 2.

Le châssis roulant est constitué de deux cadres 3 parallèles de forme rectangle dotés respectivement d'une roue motrice et d'une roue directionnelle.
Chaque cadre est relié par deux traverses, une avant 4 et une arrière 5 à la branche inférieure 6 d'un compas central et axial au châssis et au siège.
La branche inférieure 6 est fixe en position.The rolling chassis consists of two parallel frames 3 of rectangle shape respectively provided with a drive wheel and a directional wheel.
Each frame is connected by two crosspieces, a front 4 and a rear 5 to the lower branch 6 of a central and axial compass to the chassis and the seat.
The lower branch 6 is fixed in position.

Les traverses 4/4 et 5/5 sont montées articulées pour permettre le repliement du châssis par rapprochement des cadres 3 vers la branche 6 fixe du compas central formant poutre.
Chacune de ces traverses 4/5 est de conformation rectangle ou trapézoïdale avec chape d'articulation sur les montants du cadre correspondant et sur la branche fixe inférieure 6 du compas.The sleepers 4/4 and 5/5 are mounted articulated to allow the folding of the chassis by bringing the frames 3 towards the fixed branch 6 of the central compass forming beam.
Each of these crosspieces 4/5 is of rectangular or trapezoidal conformation with hinge clevis on the uprights of the corresponding frame and on the lower fixed branch 6 of the compass.

Selon une forme de réalisation de l'invention représentée à la figure 5, chacun des cadres 3 du châssis roulant est monté oscillant.
A cet effet, sur la poutre centrale 6 du compas sont disposées, à chacune de ses extrémités des chapes 6A articulées à la poutre 6 et dans lesquelles sont montées les biellettes 4-5 qui sont également fixées de manière articulées au cadre 3 du châssis correspondant.According to an embodiment of the invention shown in Figure 5, each of the frames 3 of the rolling chassis is mounted oscillating.
For this purpose, on the central beam 6 of the compass are arranged, at each of its ends yokes 6A articulated to the beam 6 and in which are mounted the rods 4-5 which are also fixed in an articulated manner to the frame 3 of the corresponding chassis .

Sur chaque cadre 3 est monté en articulation un parallélogramme déformable constituant élément de la structure élévatrice 2. Chaque parallélogramme est constitué (figure 1) d'un montant supérieur horizontal 7 articulé en 8 sur le montant frontal vertical du cadre 3 et d'un montant inférieur 9 articulé en 10 sur le montant horizontal 11 du cadre 3 en arrière du point d'articulation 8 précédemment décrit.
Les montants 7 et 9 du parallélogramme déformable sont reliés par une biellette arrière 12 articulée à l'un et à l'autre.On each frame 3 is mounted in articulation a deformable parallelogram constituting an element of the lifting structure 2. Each parallelogram is constituted (FIG. 1) of a horizontal upper upright 7 articulated in 8 on the vertical frontal upright of the frame 3 and of an upright lower 9 articulated at 10 on the horizontal upright 11 of the frame 3 behind the articulation point 8 previously described.
The uprights 7 and 9 of the deformable parallelogram are connected by a rear link 12 articulated to one and to the other.

La biellette 12 est constituée par une plaque métallique sensiblement en forme de losange, qui se prolonge au-dessus du point d'articulation du montant 7 autour duquel elle fait un mouvement de rotation.
Elle se prolonge au-dessus du dit point d'articulation pour servir de base de fixation articulée du montant 13 du dossier.
La dite biellette est dotée à l'arrière du point d'articulation sur le montant 7 du parallélogramme déformable d'une chape de fixation d'une traverse pliante horizontale qui réunit les parallélogrammes déformables de la structure élévatrice et sera décrite plus loin.The link 12 is constituted by a metal plate substantially in the shape of a diamond, which extends above the point of articulation of the upright 7 around which it makes a rotational movement.
It extends above said point of articulation to serve as a base for articulated fixing of the upright 13 of the backrest.
Said link is provided at the rear of the point of articulation on the upright 7 of the deformable parallelogram with a fixing bracket for a horizontal folding crosspiece which joins together the deformable parallelograms of the lifting structure and will be described later.

Le montant 13 du dossier est doté d'un accoudoir 14 monté sur une articulation et relié à l'arrière de son point d'articulation par une chainette 15 représentée en trait discontinu fixée, soit dans le prolongement du montant 7, soit dans le prolongement du montant 9 en sorte que l'accoudoir soit soumis à inclinaison ou soit maintenu en position perpendiculaire au dossier lors de l'élévation.The upright 13 of the backrest has an armrest 14 mounted on a articulation and connected to the rear of its articulation point by a chain 15 shown in fixed broken line, either in the extension of the upright 7, or in the extension of the upright 9 so that the armrest is tilted or either maintained in position perpendicular to the backrest during elevation.

Une toile tendue entre les parallélogrammes déformables constitue le siège et une autre toile est tendue entre les montants du dossier.A canvas stretched between the deformable parallelograms constitutes the seat and another canvas is stretched between the uprights of the backrest.

La traverse pliante horizontale qui réunit les parallélogrammes déformables à l'arrière au niveau des biellettes 12 dans les chapes desquelles elle est fixée, est constituée de deux tronçons 16 et 17 fixés chacun de manière articulée dans l'une des chapes de la biellette 12 correspondante et également fixés de manière articulée dans une chape 18 d'une platine de jonction 19 avec poignée 20 de manoeuvre.The horizontal folding cross member which brings together the deformable parallelograms at the rear at the level of the links 12 in the yokes of which it is fixed, consists of two sections 16 and 17 each fixed in an articulated manner in one of the yokes of the corresponding link 12 and also articulated in a clevis 18 of a junction plate 19 with handle 20 for maneuvering.

La platine de jonction 19 est dotée d'un montant horizontal 20A sur lequel s'alignent les tronçons 16/17 du blocage de la traverse.
Elle est également dotée d'un verrou mobile 21 constituée par une lame articulée à la platine entre les points d'articulation des tronçons 16/17 et qui, lors de leur alignement entre eux et avec le montant 20 formant épaulement, recouvre les dits tronçons 16, 17 et le montant 20 en empêchant leur écartement.The connecting plate 19 is provided with a horizontal upright 20A on which the sections 16/17 of the crosspiece locking are aligned.
It also has a movable lock 21 constituted by a blade articulated to the plate between the articulation points of the sections 16/17 and which, when they are aligned with one another and with the upright 20 forming a shoulder, covers the said sections 16, 17 and the amount 20 by preventing their separation.

La platine 19 est dotée d'une chape inférieure 21A à laquelle est fixée de manière articulée la branche supérieure 22 du compas central reliée à la branche inférieure 6 du dit compas, la dite branche 6 constituant une poutre axiale.The plate 19 is provided with a lower yoke 21A to which the upper branch 22 of the compass is hinged. central connected to the lower branch 6 of said compass, said branch 6 constituting an axial beam.

La branche 6 présente une portion horizontale et une portion frontale 23 vericale à l'extrémité de laquelle est articulée la branche 22.
Entre l'extrémité arrière de la branche 22 et l'extrémité avant de la branche 6 est monté de manière articulé un ressort à gaz 24.
Le ressort à gaz 24 est monté articulé sur l'extrémité arrière de la branche 22 du compas axial et il est monté articulé sur la branche inférieure 6 à la jonction de sa portion horizontale et de sa portion frontale verticale 23.The branch 6 has a horizontal portion and a vertical front portion 23 at the end of which the branch 22 is articulated.
Between a rear end of branch 22 and the front end of branch 6 is hingedly mounted a gas spring 24.
The gas spring 24 is mounted articulated on the rear end of the branch 22 of the axial compass and it is mounted articulated on the lower branch 6 at the junction of its horizontal portion and its vertical front portion 23.

A cet effet, une came 25 à deux branches est articulée en son centre 26 sur la poutre du compas.
Sa branche supérieure de la came reçoit l'extrémité du ressort à gaz et sa branche inférieure est bloquée en position sur la poutre 6 autour du point d'articulation.
Le blocage en position de la came 25 s'effectue par un goupille traversant sa branche inférieure et venant se loger dans un des orifices 27 ménagés suivant un arc de cercle sur la poutre 6. Cette disposition réalise un réglage du point d'action du ressort à gaz pour l'adapter au poids de l'utilisateur.To this end, a cam 25 with two branches is articulated in its center 26 on the beam of the compass.
Its upper branch of the cam receives the end of the gas spring and its lower branch is locked in position on the beam 6 around the point of articulation.
The cam 25 is locked in position by a pin passing through its lower branch and being housed in one of the orifices 27 formed in an arc on the beam 6. This arrangement makes an adjustment of the spring action point gas to adapt it to the weight of the user.

Selon la forme de réalisation de l'invention représentée aux dessins, un ressort à gaz complémentaire 28 est monté entre la poutre 6 et la branche 22 du compas.
La commande des ressorts à gaz, principale et éventuellement secondaire, s'effectue au moyen d'un des deux leviers 29 montés latéralement au châssis 3.
Les leviers 29 sont portés dans une douille 30 inclinée avec laquelle ils coopèrent par un système d'encliquetage permettant, soit de les escamoter (figure 1), soit de les mettre en position opératoire (figure 2).
Seul, un des leviers commande le ressort à gaz, l'autre étant utilisé comme point d'appui.
Le levier 29 commandant le ressort à gaz est monté sur une pièce 30 reliée par un axe de rotation au châssis 3.According to the embodiment of the invention shown in the drawings, a complementary gas spring 28 is mounted between the beam 6 and the branch 22 of the compass.
The gas springs, primary and possibly secondary, are controlled by one of the two mounted levers 29 laterally to the chassis 3.
The levers 29 are carried in an inclined sleeve 30 with which they cooperate by a latching system making it possible either to retract them (FIG. 1) or to put them in the operating position (FIG. 2).
Only one of the levers controls the gas spring, the other being used as a fulcrum.
The lever 29 controlling the gas spring is mounted on a part 30 connected by an axis of rotation to the chassis 3.

L'extrémité de la pièce 30 reçoit une chainette 31 qui tourne 90° autour d'une roue 32.
La chainette 31 est reliée à une pièce basculeur 33 montée mobile sur la chape recevant le ressort à gaz et qui actionne le clapet de celui-ci par une poussée vers l'arrière du levier 29 ou vers l'avant, ce qui commande la fonction élévation ou le repliement en position assise.
Ainsi, pour se lever, l'invalide exerce une traction sur les leviers 29 et une poussée pour s'asseoir.The end of the part 30 receives a chain 31 which rotates 90 ° around a wheel 32.
The chain 31 is connected to a rocker piece 33 movably mounted on the yoke receiving the gas spring and which actuates the valve thereof by pushing back lever 29 or forward, which controls the function lifting or folding in a seated position.
Thus, to get up, the invalid exerts a traction on the levers 29 and a push to sit.

Le fauteuil selon l'invention est doté en partie frontale d'un système de repose-pied articulé en sorte que les repose-pied soient au-dessus du niveau du sol lors de la position assise et viennent en appui sur le sol lors de l'élévation, ce qui confère une stabilité accrue et une plus grande sécurité à l'utilisateur.The armchair according to the invention is provided at the front with an articulated footrest system so that the footrests are above ground level when seated and come to rest on the ground when 'elevation, which gives increased stability and greater safety to the user.

Le système de repose-pied est constitué par une plate-forme repose-pied 34 monté sur un support 35.
Le support 35 est fixé de manière verrouillable ou déverrouillable pour permettre son enlèvement ou sa rotation vers l'axe du châssis ou en écartement du dit axe sur une pièce 36 basculante.The footrest system consists of a footrest platform 34 mounted on a support 35.
The support 35 is fixed in a lockable or unlockable manner to allow its removal or its rotation towards the axis of the chassis or away from said axis on a tilting part 36.

La pièce 36 est une chape qui enserre le montant frontal vertical du châssis 3 et qui est montée fixe sur une tige 37 inclinée et articulée au montant inférieur du châssis 3 sensiblement en son centre. La pièce basculante 36 est reliée par une tringle 38 à l'extrémité du montant inférieur 9 du parallélogramme déformable correspondant.
La longueur de la tringle 38 dotée à cet effet d'un pas de vis, est réglable pour régler l'amplitude du basculement du système de cale-pieds.The part 36 is a yoke which encloses the vertical front upright of the chassis 3 and which is fixedly mounted on an inclined rod 37 and articulated to the lower upright of the chassis 3 substantially at its center. The tilting part 36 is connected by a rod 38 to the end of the lower upright 9 of the corresponding deformable parallelogram.
The length of the rod 38 provided for this purpose with a thread, is adjustable to adjust the amplitude of the tilting of the footrest system.

Lors de la fonction élévation, la pièce 36 bascule vers l'avant, ce qui amène les cale-pieds vers le sol et en appui sur celui-ci. Lors du retour à la position assise, la pièce 36 bascule vers l'arrière, ce qui relève les cale-pieds.During the elevation function, the part 36 swings forward, which brings the toe clips towards the ground and resting on it. When returning to the seated position, the part 36 rocks backwards, which raises the toe clips.

La plate-forme 34 de l'un au moins des cale-pieds est dotée d'une butée inférieure 39 avec pas de vis de réglage et patin élastique d'appui au sol.
Les plates-formes 34 des cale-pieds sont montées basculantes vers le haut pour les escamoter et sont dotées de moyens permettant de les solidariser dans le même plan.
Ces moyens sont constitués par un pion 40 d'une des plates-formes sur lequel s'emboite un cavalier 42 de l'autre plate-forme.The platform 34 of at least one of the toe clips is provided with a lower stop 39 with no adjusting screw and elastic pad for bearing on the ground.
The platforms 34 of the toe clips are mounted tilting upwards to retract them and are provided with means making it possible to secure them in the same plane.
These means consist of a pin 40 of one of the platforms on which fits a jumper 42 of the other platform.

La structure élévatrice est dotée de manière connue de sangles de maintien au niveau du buste et des genoux de l'utilisateur.The lifting structure is provided in known manner with holding straps at the bust and the user's knees.

Le passage de la fonction assise à la fonction élévation et inversement s'effectue sans effort particulier de l'utilisateur par actionnement du levier qui commande le ressort à gaz.
Au repos, la structure élévatrice est en appui sur le châssis. Son élévation maximum est limitée par la course du ressort à gaz.The transition from the seat function to the elevation function and vice versa is carried out without any particular effort on the part of the user by actuation of the lever which controls the gas spring.
At rest, the lifting structure is supported on the chassis. Its maximum elevation is limited by the stroke of the gas spring.

Le repliement de l'ensemble du fauteuil s'effectue après libération du verrou par repliement de la traverse horizontale arrière, ce qui entraine par rapprochement des cadres 3 du châssis, le repliement des biellettes 4/5 vers la poutre centrale 6.
Le fauteuil selon l'invention présente l'avantage d'être facile à manipuler et léger.The entire chair is folded back after the lock has been released by folding the rear horizontal cross member, which brings the frames 3/5 closer together to fold the links 4/5 towards the central beam 6.
The chair according to the invention has the advantage of being easy to handle and light.

Claims (14)

  1. A folding and lifting wheelchair made up of a chassis (1) provided with rolling elements and made up of two parallel vertical frames connected to a lower horizontal branch (6) by articulated rods (4), (5), said chassis being foldable by bringing the frames towards the branch (6) and said chair comprising a lifting structure made up of two deformable parallelograms, between which there is mounted a seat, said deformable parallelograms being movable under the action of a motor element from a substantially horizontal position termed the sitting position, to a substantially vertical position, termed the erect position, the branch (6) being the branch of a pair of axial and median compasses, said chair being characterized in that:
       said compasses develop in accordance with the median vertical plane parallel to the vertical planes, in accordance with which the frames of the chassis develop, and comprise a branch (22) articulated to the branch (6), between which there is interposed the motor element, said branch (22) being articulated by its upper end to a cross-piece (16), bending centrally with a bolt (21) which controls the bending or locking in opening of the lifting structure and of the rolling chassis.
  2. A wheelchair according to Claim 1, characterized in that the motor element is an element (28) which is movable in extension or retraction, arranged between the fixed branch (6) and the movable branch (22) of the compasses.
  3. A wheelchair according to Claim 1 and Claim 2, characterized in that the cross-piece (16) is made up of two sections (16), (17), mounted so as to be articulated on a plate (19) provided with a bolt (21) for holding in alignment of the sections (16), (17) and with a lower cap for the articulation of the upper movable branch (22) of the compasses.
  4. A wheelchair according to Claim 1, characterized in that there is added to the lifting structure (2) an articulated and movable system of foot rests (34), (35), which lowers until contact with the ground, on elevation.
  5. A wheelchair according to the preceding claim, characterized in that the system of foot rests is connected to a rocking piece (36) controlled by a rod (38) connected to the corresponding deformable parallelogram.
  6. A wheelchair according to Claim 4 and Claim 5, characterized in that the extent of rocking of the piece (36) is adjustable.
  7. A wheelchair according to Claim 4, characterized in that the platform (34) of one of the foot rests is provided with an adjustable stop (39) for resting on the ground.
  8. A wheelchair according to Claim 4, characterized in that the support (35) of each platform (34) is mounted on the piece (36) so as to be rotatable and removable.
  9. A wheelchair according to Claim 4, characterized in that the platforms (34) are provided with means allowing them to be made integral with each other.
  10. A wheelchair according to Claim 1, characterized in that the point of application of the thrust of the gas spring (24) on the fixed branch (6) of the central compasses is adjustable.
  11. A wheelchair according to the preceding claim, characterized in that the gas spring (24) is connected to the branch (6) of the central compasses by a cam articulated to said branch (6) and locked in a fixed position by cooperation of a pin in one of the orifices (27) of the branch (6), as a function of the weight of the user.
  12. A wheelchair according to Claim 1, characterized in that each frame (3) of the chassis is provided with a retractable lever (29).
  13. A wheelchair according to the preceding claim, characterized in that one of the two levers is mounted on an articulated piece and in that it controls by a connection the opening of the valve of the gas spring.
  14. A wheelchair according to Claim 1, provided with a back arranged between two uprights (13), each provided with an arm-rest (14), characterized in that the arm-rest (14) is mounted by an articulation integral with the upright (13) and connected to the rear of its point of articulation by a fixed chain (15), either in the extension of the upright (7) or in the extension of the upright (9), such that the arm-rest (14) is subject to inclination or is held in a position perpendicular to the back, on elevation.
EP86450027A 1985-12-30 1986-12-29 Collapsible, elevating wheel chair Expired - Lifetime EP0231718B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86450027T ATE66584T1 (en) 1985-12-30 1986-12-29 FOLDABLE STANDING WHEELCHAIR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8519574A FR2592301B1 (en) 1985-12-30 1985-12-30 LIFT FOLDING WHEELCHAIR.
FR8519574 1985-12-30

Publications (2)

Publication Number Publication Date
EP0231718A1 EP0231718A1 (en) 1987-08-12
EP0231718B1 true EP0231718B1 (en) 1991-08-28

Family

ID=9326432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86450027A Expired - Lifetime EP0231718B1 (en) 1985-12-30 1986-12-29 Collapsible, elevating wheel chair

Country Status (4)

Country Link
EP (1) EP0231718B1 (en)
AT (1) ATE66584T1 (en)
DE (1) DE3681152D1 (en)
FR (1) FR2592301B1 (en)

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WO2018220641A1 (en) * 2017-05-31 2018-12-06 INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT Madras) Easy to use portable manual standing wheelchair with safety features and for outdoor use

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US6192533B1 (en) 1999-04-02 2001-02-27 I.D.C. Medical Elevator chairs for the handicapped and invalids
SE533031C2 (en) * 2009-04-15 2010-06-15 Haakan Sjoegren Seating that facilitates erection
DE102009022567B4 (en) * 2009-05-25 2013-05-23 Stanzwerk Wetter Sichelschmidt Gmbh & Co. Kg Seating furniture with stand-up aid
CN103040588A (en) * 2012-12-30 2013-04-17 淮安市楚州区南闸农机修配厂 Electric walking-aided fitness chair
CN112120853B (en) * 2020-10-13 2022-04-05 东莞灏智动能科技有限公司 Electric lifting folding wheelchair capable of being quickly disassembled and assembled

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US3589769A (en) * 1969-05-19 1971-06-29 Peter W Bressler Nding wheelchair
GB1446845A (en) * 1972-11-01 1976-08-18 Gannet Holdings Ltd Collapsible volume frame structures
US4054319A (en) * 1975-10-23 1977-10-18 The United States Of America As Represented By The Secretary Of The Navy Stand-aid invalid wheelchair
US3990745A (en) * 1975-11-03 1976-11-09 Everest & Jennings, Inc. Wheelchair with removable back
CH608186A5 (en) * 1976-01-30 1978-12-29 Valutec Ag
GB1534777A (en) * 1976-04-30 1978-12-06 Imbro M Invalid chairs
US4360213A (en) * 1980-04-01 1982-11-23 Rudwick Lawrence A Sport type wheel chair
FR2553650B1 (en) * 1983-10-20 1986-02-21 Int Diffusion Consomma REMOVABLE FOOTREST FOR WHEELCHAIR WITH VERTICALIZATION STRUCTURE
EP0146660B1 (en) * 1983-12-22 1988-04-13 Société à Responsabilité Limitée : INTERNATIONAL DIFFUSION CONSOMMATEUR IDC Stand-up apparatus for a wheel chair, and wheel chair provided therewith
US4555121A (en) * 1984-09-20 1985-11-26 Invacare Corporation Invalid's chair to facilitate transfer to an automobile

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018220641A1 (en) * 2017-05-31 2018-12-06 INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT Madras) Easy to use portable manual standing wheelchair with safety features and for outdoor use
US10765574B2 (en) 2017-05-31 2020-09-08 INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT Madras) Easy to use portable manual standing wheelchair with safety features and for outdoor use

Also Published As

Publication number Publication date
FR2592301A1 (en) 1987-07-03
FR2592301B1 (en) 1990-06-29
ATE66584T1 (en) 1991-09-15
EP0231718A1 (en) 1987-08-12
DE3681152D1 (en) 1991-10-02

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