EP0127511A2 - Foldable wheel chair - Google Patents

Foldable wheel chair Download PDF

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Publication number
EP0127511A2
EP0127511A2 EP84400958A EP84400958A EP0127511A2 EP 0127511 A2 EP0127511 A2 EP 0127511A2 EP 84400958 A EP84400958 A EP 84400958A EP 84400958 A EP84400958 A EP 84400958A EP 0127511 A2 EP0127511 A2 EP 0127511A2
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EP
European Patent Office
Prior art keywords
compass
fact
frames
articulation device
shoulder
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
Application number
EP84400958A
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German (de)
French (fr)
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EP0127511A3 (en
EP0127511B1 (en
Inventor
Jehan Roy
Jean Dubois
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Lacoste SA
Original Assignee
Lacoste SA
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Publication date
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Priority to AT84400958T priority Critical patent/ATE37140T1/en
Publication of EP0127511A2 publication Critical patent/EP0127511A2/en
Publication of EP0127511A3 publication Critical patent/EP0127511A3/en
Application granted granted Critical
Publication of EP0127511B1 publication Critical patent/EP0127511B1/en
Expired legal-status Critical Current

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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
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • 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
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
    • A61G5/0816—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding side to side, e.g. reducing or expanding the overall width of the wheelchair

Definitions

  • the present invention relates to the field of transport of people with motor disabilities, and more particularly relates to a foldable wheelchair.
  • this type of armchair comprises a support frame carrying the backrest and the seat of said armchair as well as two small front steering wheels and two large rear propulsion wheels, and formed of two symmetrical parts each consisting of a rectangular lateral frame .
  • These two side frames are intended to move away (unfolded position for using the wheelchair) or to move closer (folded position for storing the wheelchair), in relation to each other, in order to reduce the bulk of the whole unused chair.
  • each frame consisting of two horizontal top and bottom rails, kept spaced apart by two vertical front and rear rails, is joined to the other by means of an articulation device which is most often in the form a crosspiece whose four free ends are rotatably mounted around four axes parallel to the four horizontal uprights of the side frames of said support frame.
  • this articulation device in addition to the significant weight of the crossbars, requires the presence of a system intended to compensate for the level differences between the two high horizontal beams and the two low horizontal beams of the two lateral frames during folding or unfolding the support frame.
  • This system generally formed by plungers engaging telescopically inside the vertical beams of the two side frames, has the immediate consequence of making the support frame heavier, which creates an additional difficulty for the user for the different manipulations.
  • the articulation device consists of a compass, the free ends of the two branches of which are associated with sleeves mounted to rotate around two support axes arranged parallel to each other and to the vertical beams of the two frames, on the first rear third of the latter two.
  • such an armchair combines the following qualities: simple and space-saving structure of the entire armchair, reliability of use resulting from the simplicity of the maneuvers to be executed, small size of the folded armchair, weight of the chassis -Support reduced by half compared to the folding wheelchairs currently on the market.
  • the figure carried by this drawing is a three-quarter perspective view from above of a foldable wheelchair equipped with such a device.
  • This wheelchair is constituted by a support frame 1 formed by two lateral rectangular frames 1a and 1b, intended to approach or move away from one another.
  • These lateral frames 1a and 1b each consist of two horizontal top and bottom rails (respectively 2a, 2b and 2'a, 2'b) kept spaced apart by means of two vertical front and rear rails (respectively 3a, 3b and 3 ' a, 3'b).
  • This support frame 1 is mounted on the one hand on two small front steering wheels 4a and 4b and on the other hand on two large rear support wheels 4'a and 4'b, called propulsion.
  • the axes of rotation of the small front wheels 4a and 4b are fixed on the front vertical beams 3a and 3b, respectively, while the axes of rotation of the two large rear wheels 4'a and 4'b are fixed on the rear vertical beams 3 'a and 3'b, respectively.
  • the two rear vertical beams 3'a and 3'b of the support frame are extended at their upper part by two tubular uprights 5a and Sb, provided at their top with handles 5'a and 5'b.
  • the back and the seat of the wheelchair ensuring the seated position of its occupant, consist of two fabrics, respectively 6 and 7, stretched first between the tubular uprights Sa and 5b, and the second between the side rails horizontal high 2a and 2b of the support frame 1.
  • accessories that are found on a conventional wheelchair, such as a footrest support 8, armrests 9, etc ...
  • the two lateral frames 1a and 1b are joined by means of an articulation device 10 making it possible to fold or unfold the chair by bringing the two frames together or away from them lateral.
  • This articulation device consists of a compass, the free ends of the two branches 10a and 10b of which are associated with sleeves, respectively 10'a and 10'b, rotatably mounted around two vertical support axes 3 "a and 3" b arranged vertically and parallel to each other at the first rear third of the two lateral frames 1a and 1b.
  • the position "first rear third" of the two vertical support axes 3 "a and 3" b was chosen according to the center of gravity of the wheelchair and its occupant in order to strengthen the support frame 1.
  • the support axes 3 "a and 3" b are mounted integral each between the two bottom horizontal beams 2'a and 2'b, and two additional horizontal beams 2 "a and 2" b, arranged below the high horizontal beams 2a and 2b.
  • a second fabric 7 ' parallel to the fabric of the seat 7, is erected between the two horizontal bottom beams 2'a and 2'b of the support frame.
  • the branch 10b of the compass articulation device is provided with a shoulder 11 intended to cover part of the end of the other branch 10b when the latter is in the extension of the first one. It is understood that the purpose of this shoulder is to limit the angular expansion of the two branches 10a and 10b to a half-plane and more particularly, in this case, to the rear half-plane.
  • the object of the invention is to adapt on the branch 10b a pull handle 12, making it possible to exert a force in the direction indicated by the arrow F. It is also possible to put on the other branch 10a a handle intended to exert a traction opposite direction to that of arrow F to allow the unfolding of the chair by opening said compass.

Abstract

A folding wheelchair comprises a framework, a seat and a backrest mounted on said framework. Two front caster wheels permit steering and two large rear wheels permit propulsion. The framework comprises two symmetrical lateral rectangular frames mounted to be moved away from or brought back toward each other by a jointing device, each lateral rectangular frame comprising at least one lower and one upper horizontal side-bar spaced by one front and one rear vertical side-bar. The jointing device comprises a compass-member having two legs whose outer ends are rotatively mounted around two parallel supporting pins, each of which is disposed within the corresponding lateral frame of the framework. Two pieces of canvas are provided, which are parallelly stretched between the lower and the upper horizontal side-bars of the lateral frames and are located on opposite sides of the compass, one of these pieces of canvas comprising the seat. One of the legs of the compass comprises a shoulder located at a pivotal joint between the legs, the shoulder overlapping and abutting a portion of the end of the other leg when the compass-member is extended, whereby the shoulder limits the extending movement of the compass. The shoulder abuts that other leg when the legs have passed over-center upon extension of the compass, the tension in the canvas preventing unwanted collapse of the compass.

Description

La présente invention a trait au domaine du transport de personnes atteintes d'un handicap moteur, et concerne plus particulièrement un fauteuil roulant pliable.The present invention relates to the field of transport of people with motor disabilities, and more particularly relates to a foldable wheelchair.

En général, ce type de fauteuil comprend un châssis-support portant le dossier et le siège dudit fauteuil ainsi que deux petites roues avant directrices et deux grandes roues arrières de propulsion, et formé de deux parties symétriques se composant chacune d'un cadre latéral rectangulaire. Ces deux cadres latéraux sont destinés à s'éloigner (position dépliée pour l'utilisation du fauteuil) ou à se rapprocher (position pliée pour le rangement du fauteuil), l'un par rapport à l'autre, afin de réduire l'encombrement de l'ensemble du fauteuil non utilisé.In general, this type of armchair comprises a support frame carrying the backrest and the seat of said armchair as well as two small front steering wheels and two large rear propulsion wheels, and formed of two symmetrical parts each consisting of a rectangular lateral frame . These two side frames are intended to move away (unfolded position for using the wheelchair) or to move closer (folded position for storing the wheelchair), in relation to each other, in order to reduce the bulk of the whole unused chair.

A cet effet, chaque cadre, constitué de deux longerons horizontaux haut et bas, maintenus espacés par deux longerons verticaux avant et arrière, est réuni à l'autre au moyen d'un dispositif d'articulation qui se présente le plus souvent sous la forme d'un croisillon dont les quatre extrémités libres sont montées rotatives autour de quatre axes parallèles aux quatre montants horizontaux des cadres latéraux dudit châssis-support.To this end, each frame, consisting of two horizontal top and bottom rails, kept spaced apart by two vertical front and rear rails, is joined to the other by means of an articulation device which is most often in the form a crosspiece whose four free ends are rotatably mounted around four axes parallel to the four horizontal uprights of the side frames of said support frame.

L'inconvénient majeur présenté par un fauteuil de ce type est son poids.The major drawback of a chair of this type is its weight.

En effet, ce dispositif d'articulation, outre le poids notable des croisillons, nécessite la présence d'un système destiné à rattraper les différences de niveau entre les deux longerons horizontaux hauts et Jes deux longerons horizontaux bas des deux cadres latéraux lors du pliage ou du dépliage du châssis-support.In fact, this articulation device, in addition to the significant weight of the crossbars, requires the presence of a system intended to compensate for the level differences between the two high horizontal beams and the two low horizontal beams of the two lateral frames during folding or unfolding the support frame.

Ce système, généralement formé de plongeurs s'engageant de manière télescopique à l'intérieur des longerons verticaux des deux cadres latéraux, a pour conséquence immédiate d'alourdir le châssis-support, ce qui crée à l'usager une difficulté supplémentaire pour les différentes manipulations.This system, generally formed by plungers engaging telescopically inside the vertical beams of the two side frames, has the immediate consequence of making the support frame heavier, which creates an additional difficulty for the user for the different manipulations.

Faisant Je bilan de cet état de fait, la demanderesse a mené des recherches qui ont abouti à l'emploi d'un nouveau dispositif d'articulation réunissant les deux cadres latéraux du châssis-support et permettant d'obvier aux inconvénients précités.Taking stock of this state of affairs, the Applicant has carried out research which has resulted in the use of a new articulation device uniting the two lateral frames of the support frame and making it possible to obviate the aforementioned drawbacks.

Suivant l'invention, le dispositif d'articulation est constitué d'un compas dont les extrémités libres des deux branches sont associées à des fourreaux montés rotatifs autour de deux axes-supports disposés parallèlement entre eux et aux longerons verticaux des deux cadres, au premier tiers arriere de ces deux derniers.According to the invention, the articulation device consists of a compass, the free ends of the two branches of which are associated with sleeves mounted to rotate around two support axes arranged parallel to each other and to the vertical beams of the two frames, on the first rear third of the latter two.

On comprend aisément que la différence de poids offerte entre le dispositif d'articulation à compas et le dispositif d'articulation à croisillons est déjà très importante. A cela, s'ajoute le fait que le système de plongeurs est abandonné au profit d'un système beaucoup plus léger permettant d'assurer au châssis-support déplié une bonne assise sur le sol. A cet effet, deux toiles, dont l'une formant siège, sont tendues parallèles entre les longerons horizontaux haut et bas des deux cadres latéraux et de part et d'autre du dispositif d'articulation à compas. Ainsi, ces deux toiles définissent avec les deux cadres latéraux des parallélogrammes déformables.It is easily understood that the difference in weight offered between the compass hinge device and the cross hinge device is already very large. Added to this is the fact that the plunger system is abandoned in favor of a much lighter system to ensure the unfolded support frame a good seat on the ground. To this end, two fabrics, one of which forms a seat, are stretched parallel between the top and bottom horizontal beams of the two lateral frames and on either side of the compass articulation device. Thus, these two fabrics define with the two lateral frames deformable parallelograms.

Comme on le comprendra mieux plus loin, un tel fauteuil réunit les qualités suivantes : structure simple et peu encombrante de l'ensemble du fauteuil, fiabilité d'utilisation résultant de la simplicité des manoeuvres à exécuter, faible encombrement du fauteuil plié, poids du châssis-support réduit de moitié par rapport aux fauteuils roulants pliables actuellement sur le marché.As will be better understood below, such an armchair combines the following qualities: simple and space-saving structure of the entire armchair, reliability of use resulting from the simplicity of the maneuvers to be executed, small size of the folded armchair, weight of the chassis -Support reduced by half compared to the folding wheelchairs currently on the market.

L'invention ayant été exposée dans sa forme générale, d'autres caractéristiques et avantages de celle-ci apparaîtront mieux à la lecture de la description qui suit, donnant, à titre d'exemple non limitatif et en regard des dessins annexés, un mode de réalisation préférée d'un dispositif conforme à l'invention.The invention having been explained in its general form, other characteristics and advantages thereof will appear better on reading the description which follows, giving, by way of nonlimiting example and with reference to the appended drawings, a mode preferred embodiment of a device according to the invention.

La figure portée par ce dessin est une vue en perspective de trois- quart de dessus d'un fauteuil roulant pliable équipé d'un tel dispositif.The figure carried by this drawing is a three-quarter perspective view from above of a foldable wheelchair equipped with such a device.

Ce fauteuil roulant est constitué par un châssis-support 1 formé de deux cadres rectangulaires latéraux la et 1b, destinés à se rapprocher ou à s'éloigner l'un par rapport à l'autre. Ces cadres latéraux 1a et 1 b sont constitués chacun de deux longerons horizontaux haut et bas (respectivement 2a, 2b et 2'a, 2'b) maintenus espacés au moyen de deux longerons verticaux avant et arrière (respectivement 3a, 3b et 3'a, 3'b).This wheelchair is constituted by a support frame 1 formed by two lateral rectangular frames 1a and 1b, intended to approach or move away from one another. These lateral frames 1a and 1b each consist of two horizontal top and bottom rails (respectively 2a, 2b and 2'a, 2'b) kept spaced apart by means of two vertical front and rear rails (respectively 3a, 3b and 3 ' a, 3'b).

Ce châssis-support 1 est monté d'une part sur deux petites roues avant directrices 4a et 4b et d'autre part sur deux grandes roues arrière d'appui 4'a et 4'b, dites de propulsion. Les axes de rotation des petites roues avant 4a et 4b sont fixés sur les longerons verticaux avant 3a et 3b, respectivement, alors que les axes de rotation des deux grandes roues arrières 4'a et 4'b sont fixés sur les longerons verticaux arrière 3'a et 3'b, respectivement.This support frame 1 is mounted on the one hand on two small front steering wheels 4a and 4b and on the other hand on two large rear support wheels 4'a and 4'b, called propulsion. The axes of rotation of the small front wheels 4a and 4b are fixed on the front vertical beams 3a and 3b, respectively, while the axes of rotation of the two large rear wheels 4'a and 4'b are fixed on the rear vertical beams 3 'a and 3'b, respectively.

On notera que les deux longerons verticaux arrière 3'a et 3'b du châssis-support sont prolongés à leur partie haute de deux montants tubulaires 5a et Sb, munis à leur sommet de poignées 5'a et 5'b. Comme on peut le voir, le dossier et le siège du fauteuil roulant,assurant la position assise de son occupant sont constitués de deux toiles, respectivement 6 et 7, tendues la première entre les montants tubulaires Sa et 5b , et la seconde entre les longerons horizontaux hauts 2a et 2b du châssis-support 1. On remarquera aussi la présence d'accessoires que l'on trouve sur un fauteuil roulant classique, tels par exemple un support repose-pieds 8, des accoudoirs 9, etc...Note that the two rear vertical beams 3'a and 3'b of the support frame are extended at their upper part by two tubular uprights 5a and Sb, provided at their top with handles 5'a and 5'b. As can be seen, the back and the seat of the wheelchair, ensuring the seated position of its occupant, consist of two fabrics, respectively 6 and 7, stretched first between the tubular uprights Sa and 5b, and the second between the side rails horizontal high 2a and 2b of the support frame 1. Note also the presence of accessories that are found on a conventional wheelchair, such as a footrest support 8, armrests 9, etc ...

Selon la caractéristique principale de l'invention, les deux cadres latéraux la et 1 b sont réunis au moyen d'un dispositif d'articulation 10 permettant d'assurer le pliage ou lé dépliage du fauteuil par le rapprochement ou l'éloignement des deux cadres latéraux. Ce dispositif d'articulation est constitué par un compas dont les extrémités libres des deux branches 10a et 10b sont associées à des fourreaux, respectivement 10'a et 10'b, montés rotatifs autour de deux axes-supports verticaux 3"a et 3"b disposés, verticalement et parallèlement entre eux, au premier tiers arrière des deux cadres latéraux la et 1b. La position "premier tiers arrière" des deux axes-supports verticaux 3"a et 3"b a été choisie en fonction du centre de gravité du fauteuil et de son occupant afin de renforcer le châssis-support 1. Afin de consolider la structure de ces deux cadres latéraux la et 1b, les axes-supports 3"a et 3"b sont montés solidaires chacun entre les deux longerons horizontaux bas 2'a et 2'b, et deux longerons horizontaux supplémentaires 2"a et 2"b, disposés en-dessous des longerons horizontaux hauts 2a et 2b.According to the main characteristic of the invention, the two lateral frames 1a and 1b are joined by means of an articulation device 10 making it possible to fold or unfold the chair by bringing the two frames together or away from them lateral. This articulation device consists of a compass, the free ends of the two branches 10a and 10b of which are associated with sleeves, respectively 10'a and 10'b, rotatably mounted around two vertical support axes 3 "a and 3" b arranged vertically and parallel to each other at the first rear third of the two lateral frames 1a and 1b. The position "first rear third" of the two vertical support axes 3 "a and 3" b was chosen according to the center of gravity of the wheelchair and its occupant in order to strengthen the support frame 1. In order to consolidate the structure of these two lateral frames 1a and 1b, the support axes 3 "a and 3" b are mounted integral each between the two bottom horizontal beams 2'a and 2'b, and two additional horizontal beams 2 "a and 2" b, arranged below the high horizontal beams 2a and 2b.

Selon une réalisation préférentielle de l'invention, une deuxième toile 7', parallèle à la toile du siège 7, est dressée entre les deux longerons horizontaux bas 2'a et 2'b du châssis-support. Ainsi, lorsque le dispositif d'articulation à compas 10 est en position telle qu'illustrée sur le dessin, l'écartement entre les deux cadres latéraux la et 1b assuré par les deux branches 10a et 10b du compas dans l'alignement l'une de l'autre, est conforté par la tension des deux toiles 7 et 7' dont le matériau a été étudié pour résister aux efforts de traction tout en assurant le confort de l'occupant du siège 7.According to a preferred embodiment of the invention, a second fabric 7 ', parallel to the fabric of the seat 7, is erected between the two horizontal bottom beams 2'a and 2'b of the support frame. Thus, when the compass articulation device 10 is in position as illustrated in the drawing, the spacing between the two lateral frames 1a and 1b provided by the two arms 10a and 10b of the compass in alignment with one on the other, is reinforced by the tension of the two fabrics 7 and 7 ', the material of which has been studied to resist the traction forces while ensuring the comfort of the occupant of the seat 7.

Selon une caractéristique particulièrement avantageuse de l'invention, la branche 10b du dispositif d'articulation à compas est munie d'un épaulement 11 destiné à recouvrir une partie de l'extrémité de l'autre branche 10b lorsque cette dernière est dans le prolongement de la première. On comprend que cet épaulement a pour objet de limiter l'expansion angulaire des deux branches 10a et 10b à un demi-plan et plus particulièrement, dans le cas présent, au demi-plan arrière. Afin de rendre plus aisées les manipulations de pliage qui consistent à fermer le compas 10, l'invention a pour objet d'adapter sur la branche 10b une poignée de tirage 12, permettant d'exercer un effort dans le sens indiqué par la flèche F. Il est possible également de mettre sur l'autre branche 10a une poignée ayant pour objet d'exercer une traction de sens opposé à celui de la flèche F pour permettre le dépliage du fauteuil en ouvrant ledit compas.According to a particularly advantageous characteristic of the invention, the branch 10b of the compass articulation device is provided with a shoulder 11 intended to cover part of the end of the other branch 10b when the latter is in the extension of the first one. It is understood that the purpose of this shoulder is to limit the angular expansion of the two branches 10a and 10b to a half-plane and more particularly, in this case, to the rear half-plane. In order to make the folding operations which consist in closing the compass 10 easier, the object of the invention is to adapt on the branch 10b a pull handle 12, making it possible to exert a force in the direction indicated by the arrow F. It is also possible to put on the other branch 10a a handle intended to exert a traction opposite direction to that of arrow F to allow the unfolding of the chair by opening said compass.

Bien entendu, l'invention n'est pas limitée à l'exemple de réalisation ci-dessus décrit et représenté, à partir duquel on pourra prévoir d'autres modes et d'autres formes d'exécution, sans pour cela sortir du cadre de l'invention.Of course, the invention is not limited to the embodiment described above and shown, from which other modes and other embodiments can be provided, without going beyond the ambit of the invention.

Liste des Références CitéesList of References Cited

  • 1 : châssis-support1: support frame
  • 1a - 1b : cadres rectangulaires1a - 1b: rectangular frames
  • 2a - 2b : longerons horizontaux hauts2a - 2b: high horizontal beams
  • 2'a - 2'b : longerons honizontaux bas2'a - 2'b: low horizontal beams
  • 2"a - 2"b : longerons horizontaux supplémentaires2 "a - 2" b: additional horizontal beams
  • 3a - 3b : longerons verticaux avant3a - 3b: front vertical beams
  • 3'a - 3'b : longerons verticaux arrières3'a - 3'b: rear vertical beams
  • 3"a - 3"b : axes-supports verticaux3 "a - 3" b: vertical support axes
  • 4a - 4b : petites roues avant directrices4a - 4b: small front steering wheels
  • 4'a - 4'b : grandes roues arrières d'appui4'a - 4'b: large rear support wheels
  • 5a - 5b : montants tubulaires5a - 5b: tubular uprights
  • 5'a - 5'b : poignées5'a - 5'b: handles
  • 6 : toile verticale du dossier6: vertical backrest canvas
  • 7 - 7' : toiles horizontales dont la première forme siège7 - 7 ': horizontal fabrics, the first form of which sits
  • 8 : support repose-pieds8: footrest support
  • 9 : accoudoirs9: armrests
  • 10 : dispositif d'articulation à compas10: compass hinge device
  • 10a - 10b : branches du compas10a - 10b: branches of the compass
  • 10'a - 10'b : fourreaux10'a - 10'b: sleeves
  • 11 : épaulement11: shoulder
  • 12 : poignée de tirage.12: pull handle.

Claims (7)

1. Fauteuil roulant pliable comprenant un châssis-support (1) portant le dossier et le siège du fauteuil ainsi que deux petites roues avant directrices et deux grandes roues arrière de propulsion, ledit châssis-support étant forme de deux cadres rectangulaires latéraux (1a et 1b) destinés à se rapprocher ou à s'éloigner l'un par rapport à l'autre au moyen d'un dispositif d'articulation (10) les réunissant, lesdits cadres latéraux étant définis chacun par au moins deux longerons horizontaux haut et bas (respectivement 2a, 2b et 2'a, 2'b) maintenus espacés au moyen d'au moins deux longerons verticaux avant et arrière (respectivement 3a, 3b et 3'a, 3'b), CARACTERISE PAR LE FAIT QUE le susdit dispositif d'articulation (10) est constitué par un compas dont les extrémités libres des deux branches (10a et 10b) sont montées rotatives autour d'axes-supports (3"a et 3"b) disposés parallèlement entre eux et dans chacun des cadres latéraux dudit châssis-support.1. Foldable wheelchair comprising a support frame (1) carrying the backrest and the seat of the wheelchair as well as two small front steering wheels and two large rear propulsion wheels, said support frame being in the form of two lateral rectangular frames (1a and 1b) intended to approach or move away from each other by means of an articulation device (10) joining them together, said side frames being each defined by at least two horizontal top and bottom beams (respectively 2a, 2b and 2'a, 2'b) kept apart by means of at least two front and rear vertical beams (respectively 3a, 3b and 3'a, 3'b), CHARACTERIZED BY THE FACT THAT the above articulation device (10) consists of a compass, the free ends of the two branches (10a and 10b) of which are rotatably mounted around support axes (3 "a and 3" b) arranged parallel to each other and in each of the side frames of said support frame. 2. Fauteuil roulant selon la revendication 1, CARACTERISE PAR LE FAIT QUE deux toiles (7 et 7'), dont l'une formant siège, sont tendues parallèles entre les longerons horizontaux haut et bas des cadres latéraux (la et lb) et de part et d'autre du dispositif d'articulation à compas (10).2. A wheelchair according to claim 1, CHARACTERIZED BY THE FACT THAT two fabrics (7 and 7 '), one of which forms a seat, are stretched parallel between the top and bottom horizontal side members of the side frames (la and lb) and on either side of the compass hinge device (10). 3. Fauteuil roulant selon la revendication 1, CARACTERISE PAR LE FAIT QUE lesdits axes-supports (3"a et 3"B) du dispositif d'articulation à compas (10) sont disposés parallèlement aux longerons verticaux des cadres latéraux (1a et 1b).3. A wheelchair according to claim 1, CHARACTERIZED BY THE FACT THAT said support pins (3 "a and 3" B) of the compass articulation device (10) are arranged parallel to the vertical beams of the side frames (1a and 1b ). 4. Fauteuil roulant selon les revendications 1 et 3, CARACTERISE PAR LE FAIT QUE lesdits axes-supports (3"a et 3"b) du dispositif d'articulation à compas (10) sont disposés au premier tiers arrière des cadres latéraux (la et 1b).4. Wheelchair according to claims 1 and 3, CHARACTERIZED BY THE FACT THAT said support pins (3 "a and 3" b) of the compass articulation device (10) are arranged in the first rear third of the side frames (the and 1b). 5. Fauteuil roulant selon les revendications 1, 3 et 4, CARACTERISE PAR LE FAIT QUE les extrémités libres des branches (10a et 10b) du compas sont montées rotatives autour des axes-supports fixés au premier tiers arrière des cadres latéraux au moyen de manchons tubulaires (10'a et 10'b) fixés perpendiculairement auxdites extrémités libres et engagés autour desdits axes-supports (3"a et 3"b).5. Wheelchair according to claims 1, 3 and 4, CHARACTERIZED BY THE FACT THAT the free ends of the arms (10a and 10b) of the compass are rotatably mounted around the support axes fixed to the first rear third of the lateral frames by means of sleeves tubular (10'a and 10'b) fixed perpendicular to said free ends and engaged around said support axes (3 "a and 3" b). 6. Fauteuii roulant selon l'une quelconque des revendications 1 à 5, CARACTERISE PAR LE FAIT QUE l'une des branches (10b) du dispositif d'articulation à compas (10) est munie, au niveau de l'articulation, d'un épaulement (11) destiné à recouvrir l'extrémité de l'autre branche (10a) lorsque cette dernière est dans le prolongement de la première, afin de limiter l'expansion angulaire des deux branches à un demi-plan.6. Wheelchair according to any one of claims 1 to 5, CHARACTERIZED BY THE FACT THAT one of the branches (10b) of the compass articulation device (10) is provided, at the articulation, with a shoulder (11) intended to cover the end of the other branch (10a) when the latter is in the extension of the first, in order to limit the angular expansion of the two branches to a half-plane. 7. Fauteuil roulant selon les revendications 1 à 6 prises ensemble, CARACTERISE PAR LE FAIT QUE l'une des branches (10b) du dispositif d'articulation à compas (10) est pourvue d'au moins une poignée de tirage (12).7. A wheelchair according to claims 1 to 6 taken together, CHARACTERIZED BY THE FACT THAT one of the arms (10b) of the compass articulation device (10) is provided with at least one pull handle (12).
EP84400958A 1983-05-30 1984-05-10 Foldable wheel chair Expired EP0127511B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84400958T ATE37140T1 (en) 1983-05-30 1984-05-10 FOLDABLE WHEELCHAIR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8309612A FR2546746B1 (en) 1983-05-30 1983-05-30 FOLDABLE WHEELCHAIR
FR8309612 1983-05-30

Publications (3)

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EP0127511A2 true EP0127511A2 (en) 1984-12-05
EP0127511A3 EP0127511A3 (en) 1985-10-09
EP0127511B1 EP0127511B1 (en) 1988-09-14

Family

ID=9289652

Family Applications (1)

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EP84400958A Expired EP0127511B1 (en) 1983-05-30 1984-05-10 Foldable wheel chair

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US (1) US4577878A (en)
EP (1) EP0127511B1 (en)
AT (1) ATE37140T1 (en)
DE (1) DE3473990D1 (en)
FR (1) FR2546746B1 (en)

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EP0163139A2 (en) * 1984-05-21 1985-12-04 Levo AG Dottikon Collapsible wheel chair

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US4966379A (en) * 1987-10-19 1990-10-30 Mulholland Designs, Inc. Reclinable wheelchair
US5301970A (en) * 1990-07-03 1994-04-12 Haskins John T Collapsible wheelchair frame construction
US5106152A (en) * 1991-06-10 1992-04-21 Ward Sr Sammy W Wheelchair pak-rak
US6499762B1 (en) 1995-06-05 2002-12-31 Adorno/Rogers Technology, Inc. Frame support apparatus and coupling device for use with an ambulatory system and method of fabrication thereof
US6164674A (en) * 1995-06-05 2000-12-26 Adorno/Rogers Technology, Inc. Adjustable wheelbase wheelchair
CA2601470C (en) * 2005-03-30 2014-09-23 Jaimie Borisoff A height adjustable wheelchair
US20090167063A1 (en) * 2008-01-02 2009-07-02 Paul Edward Brunner Chair Apparatus
US8702166B2 (en) * 2008-01-02 2014-04-22 Paul Edward Brunner Chair support apparatus
DE102011116891B4 (en) * 2011-10-17 2014-10-23 Mohamed Belkacem Foldable wheelchair
US11043665B2 (en) * 2014-09-03 2021-06-22 Sanyo Electric Co., Ltd. Negative electrode active material for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery

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US2818910A (en) * 1955-11-18 1958-01-07 Hawkins Dean Tightener for folding wheel chair
DE1176315B (en) * 1963-08-31 1964-08-20 Gert Schladebach Collapsible hospital elevator
FR2326912A1 (en) * 1975-10-08 1977-05-06 Semnoz Foldable wheelchair with hole in seat - has side frames connected by horizontal members pivoted about vertical axes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0163139A2 (en) * 1984-05-21 1985-12-04 Levo AG Dottikon Collapsible wheel chair
EP0163139A3 (en) * 1984-05-21 1987-01-07 Valutec Ag Collapsible wheel chair

Also Published As

Publication number Publication date
ATE37140T1 (en) 1988-09-15
FR2546746B1 (en) 1988-10-14
EP0127511A3 (en) 1985-10-09
US4577878A (en) 1986-03-25
DE3473990D1 (en) 1988-10-20
EP0127511B1 (en) 1988-09-14
FR2546746A1 (en) 1984-12-07

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