EP1941855B1 - Wheelchair with double handrail - Google Patents

Wheelchair with double handrail Download PDF

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Publication number
EP1941855B1
EP1941855B1 EP07100252.1A EP07100252A EP1941855B1 EP 1941855 B1 EP1941855 B1 EP 1941855B1 EP 07100252 A EP07100252 A EP 07100252A EP 1941855 B1 EP1941855 B1 EP 1941855B1
Authority
EP
European Patent Office
Prior art keywords
flange
outer ring
plate
hand rim
hand
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.)
Not-in-force
Application number
EP07100252.1A
Other languages
German (de)
French (fr)
Other versions
EP1941855A1 (en
Inventor
Laurent Derche
Christian Jouannet
Régis Opfermann
Jean-Michel Roncin
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Invacare International SARL
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Invacare International SARL
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Publication date
Application filed by Invacare International SARL filed Critical Invacare International SARL
Priority to EP07100252.1A priority Critical patent/EP1941855B1/en
Publication of EP1941855A1 publication Critical patent/EP1941855A1/en
Application granted granted Critical
Publication of EP1941855B1 publication Critical patent/EP1941855B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • 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
    • A61G5/02—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person
    • 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
    • A61G5/02—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person
    • A61G5/028—Special adaptations or provisions on hand rim, e.g. for facilitating gripping
    • 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
    • A61G5/1083—Quickly-removable wheels
    • 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
    • A61G2200/00—Information related to the kind of patient or his position
    • A61G2200/10—Type of patient
    • A61G2200/20—Type of patient with asymmetric abilities, e.g. hemiplegic or missing a limb
    • 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
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1059—Arrangements for adjusting the seat adjusting the height of the seat

Definitions

  • the present invention relates to a wheelchair with double handrail.
  • Wheelchairs are known whose driving wheels are associated with handrails allowing the person occupying the wheelchair to control the movement of the latter by manually actuating one or other of the driving wheels.
  • each drive wheel is connected to a handrail, it is possible to turn the wheelchair in place by operating one of the wheels in one direction and the other in the other.
  • wheelchairs have already been made with two handrails on the same side of the wheelchair, each connected to one of the drive wheels. These two handrails are located on the same side of the chair and have a fixed position in space relative to each other. In this case, the side of the opposite wheel generally has no handrail.
  • the object of the present invention is to provide a dual handrail wheelchair arrangement which provides a solution to these problems without requiring individual manufacture of cases in case, and allows series productions with standardized parts.
  • the wheelchair according to the invention comprises the features set forth in the appended claims.
  • the Fig. 1 shows the general appearance of a wheelchair according to the preferred embodiment of the present invention.
  • This wheelchair has two drive wheels 1 and 2 mounted coaxially on a drive shaft 3 and disposed on either side of a frame 4 on which a seat with armrests 5 and a backrest 6 are arranged.
  • the wheels 1 and 2 are rear wheels ensuring the drive of the wheelchair while two small steering wheels 7, of which only the left wheel is visible at the Fig. 1 , support chassis 4 at the front.
  • the wheels 1 and 2 are manually controlled by the occupant of the wheelchair while the steering wheels 7 react automatically to the pulses coming from the wheels 1 and 2.
  • a large handrail 8 and a small handrail 9 are mounted coaxially with the shaft 3 and the wheels 1 and 2 on the right side of the chair so as to allow the occupant to order the chair with his right hand only.
  • the frame 4 comprises two rigid rectangular frames 10 and 11 maintained parallel to each other and in vertical positions, the front uprights of these frames serving as pivoting means for bars with vertical axes which are fixed wheel forklift 7.
  • the rear uprights of the frames 10 and 11 are equipped with housings 12 and 13 supporting pads of bearings 14 and 15 in which passes the shaft 3, itself composed of several elements as will be seen later.
  • the housings 12 and 13 are designed so that the pads 14 and 15 can be placed at different heights so that the same type of chair can be adapted to occupants of different sizes. All these elements are also represented in the exploded view of the Fig. 3 where we see the composite assembly of the shaft 3. This assembly of different elements plays an important role in achieving the purpose of the invention in collaboration with the arrangement of the small handrail 9.
  • the wheel 2 comprises a hub 16 whose bore is force-fitted on an outer part of a first element 17 of the shaft 3.
  • This element is a fast disassembly shaft that can be secured in its pivoting position by a nut. 18.
  • the axes of rapid disassembly are known per se; it is therefore not necessary to describe here in detail the element 17. It has after the portion fitted in the hub 16 of the wheel 2 a smooth bearing provided with a lining, engaged in the bearing 15 of the housing 13 and ends with a hexagonal male-shaped bearing, itself engaged freely in a hexagonal female inlet of a first section of a telescopic crossmember 19 comprising two sections engaged one inside the other and connected in rotation while being capable of move longitudinally to allow adjustments to the length of the crossbar.
  • a last element 20 of the shaft 3 is a second axis with rapid disassembly provided with an adjusting nut 21. Its inner end has a hexagonal male shape coupled to the female end of the second section of the cross member 19, 11 then presents a lining engaged in the bearing 14 of the housing 12 and a support bearing two ball bearings of a bearing 22 forming the hub of the wheel 1.
  • the rapid disassembly axis 20 finally has a hexagonal shape male forcibly engaged in a hexagonal female part of a flange 23 having the shape of a bowl with a flat circular flange. This flange holds and holds in place the small handrail 9. Its integrated presence in the assembly of the shaft 3 makes it very easy to change the orientation of the small handrail 9, as will be seen by considering the exposed structures to the Fig. 4 , 5 and 6 .
  • the wheels 1 and 2 comprise metal rims 24 on which are mounted partially filled pneumatic tires 25.
  • the rims of the two wheels carry bars 26 allowing optionally to attach to one or the other wheels of the transverse bars such bars 27 of the wheel 1.
  • These bars connect to the driving wheel 1 the large handrail 8 consists simply of a circular outer ring 34 provided with an inner flange from which the bars 27.
  • Wheels 1 and 2 are connected to the hubs 16 for the wheel 2, and 22 for the wheel 1, by spokes of metal or plastic hung from the eyelets 28.
  • the frames 10 and 11 of the structure 4 of the frame are formed of tubes metal whose upper horizontal elements are equipped with linings 29 fixed on the sidewall and integral with the frames 10 and 11 of the structure 4. It is seen how the bearing pads 14 and 15 are supported by the bo 12 and 13 which, fixed to the frames 10 and 11, allow to place these pads at different heights.
  • the horizontal links between the frames 10 and 11 are not shown. We know that they can be of different types.
  • the bearings 14 and 15 form smooth bearings freely engaged on cylindrical bearings of the axis segments 17 and 20, while the pivoting of the wheels 1 and 2 is ensured on one side by force-fitting the disassembly axis segment. 17 in the bearing 16 and the other by engagement of the segment 20 in the bearings of the bearing 22 of the wheel 1.
  • the small handrail 9 consists of an outer ring 30 in the form of a rigid circle, radial arms 31 for example three in number, and a central plate 32 having the shape of a disc with a central opening adjusted the outer diameter of the bowl-shaped portion of the flange 23.
  • the elements 30, 31, 32 are rigidly assembled, for example by welding, and show ( Fig. 5 ) that the radial arms 31 are slightly inclined relative to the parallel planes defined by the outer ring 30 and the plate 32.
  • the plate 32 is engaged on the flange 23 inside its peripheral flange and fixed by three bolts 33 with braking nuts 33 '.
  • the dimensions are such that the outer ring 30 of reduced diameter relative to the ring 34 of the large handrail 8 is offset axially inwards, which reduces the size of the armchair in width relative to the arrangement reversed ( Fig. 6 ) obtained as already indicated by reversing the small handrail 9 while maintaining its central plate on the inner side of the flange of the peripheral flange 23.
  • the provision of the Fig. 6 thus obtained facilitates the occupant of the chair reciprocal access by the same hand to one or other of the outer rings 30 or 34 of the small or large handrail.
  • the small handrail is fixed and that it is the large handrail that is adjustable. In the same way, we can consider having both adjustable handrails.
  • handrails described above can be made at the choice of the manufacturer on the right side or on the left side of the chair.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Handcart (AREA)

Description

Domaine techniqueTechnical area

La présente invention concerne un fauteuil roulant à double main courante.The present invention relates to a wheelchair with double handrail.

Etat de la technique et problèmes à résoudreState of the art and problems to be solved

On connaît des fauteuils roulants dont les roues motrices sont associées à des mains courantes permettant à la personne occupant le fauteuil de commander le déplacement de ce dernier en actionnant à la main l'une ou l'autre des roues motrices. Quand chaque roue motrice est reliée à une main courante, il est possible de faire virer le fauteuil sur place en actionnant l'une des roues dans un sens et l'autre dans l'autre. A l'intention de personnes handicapées n'ayant qu'une main valide, on a déjà réalisé des fauteuils roulants avec deux mains courantes disposées du même côté du fauteuil, chacune reliée à l'une des roues motrices. Ces deux mains courantes sont situées sur le même côté du fauteuil et ont une position fixe dans l'espace l'une par rapport à l'autre. Dans ce cas, le côté de la roue opposée n'a en général aucune main courante.Wheelchairs are known whose driving wheels are associated with handrails allowing the person occupying the wheelchair to control the movement of the latter by manually actuating one or other of the driving wheels. When each drive wheel is connected to a handrail, it is possible to turn the wheelchair in place by operating one of the wheels in one direction and the other in the other. For disabled persons with only one valid hand, wheelchairs have already been made with two handrails on the same side of the wheelchair, each connected to one of the drive wheels. These two handrails are located on the same side of the chair and have a fixed position in space relative to each other. In this case, the side of the opposite wheel generally has no handrail.

Un exemple d'un tel fauteuil roulant a été notamment illustré dans la demande de brevet GB-A-2 359 529 , laquelle divulgue les caractéristiques techniques du préambule de la revendication 1.An example of such a wheelchair has been illustrated in particular in the patent application. GB-A-2,359,529 which discloses the technical features of the preamble of claim 1.

Différentes positions de ces mains courantes l'une par rapport à l'autre ont été proposées. La plus courante consiste à positionner la plus petite des deux mains courantes à l'extérieur du volume défini par la plus grande. Une autre position consiste à positionner la plus petite des deux mains courantes dans le volume défini par la plus grande. Entre ces deux positions extrêmes, diverses positions relatives des deux mains courantes ont été proposées suivant les types de fauteuils. Toutefois, dans tous les cas, la position des deux mains courantes l'une par rapport à l'autre est toujours fixe.Different positions of these handrails relative to each other have been proposed. The most common is to position the smaller of the two handrails outside the volume defined by the larger one. Another position is to position the smaller of the two handrails in the volume defined by the larger one. Between these two extreme positions, various relative positions of the two handrails were proposed according to the types of armchairs. However, in all cases, the position of the two handrails relative to each other is always fixed.

On a constaté qu'il se présente alors un problème en ce qui concerne les positions relatives des anneaux extérieurs des deux mains courantes. Si ces anneaux sont relativement écartés l'un de l'autre, l'encombrement total du fauteuil en largeur en est augmenté, ce qui peut constituer un inconvénient au vu de certains passages de portes, alors que si les deux anneaux se trouvent dans un même plan perpendiculaire à l'axe des roues, ou presque dans ce même plan, leurs diamètres étant différents, il peut en résulter des difficultés de préhension pour la personne handicapée occupant le fauteuil et ne disposant que d'une main valide.It has been found that there is then a problem with regard to the relative positions of the outer rings of the two handrails. If these rings are relatively distant from each other, the total size of the armchair width is increased, which may be a disadvantage in view of certain doorways, while if the two rings are in the same plane perpendicular to the axis of the wheels, or almost in the same plane, their diameters being different, it can result in difficulties of grip for the disabled person occupying the chair and having only a valid hand.

Le but de la présente invention est de proposer un agencement de fauteuil roulant à double main courante qui apporte une solution à ces problèmes sans nécessiter des fabrications individuelles de cas en cas, et permette des productions de séries avec des pièces standardisées.The object of the present invention is to provide a dual handrail wheelchair arrangement which provides a solution to these problems without requiring individual manufacture of cases in case, and allows series productions with standardized parts.

Résumé de l'inventionSummary of the invention

Dans ce but, le fauteuil roulant selon l'invention comporte les caractéristiques énoncées dans les revendications annexées.For this purpose, the wheelchair according to the invention comprises the features set forth in the appended claims.

Description des dessinsDescription of the drawings

On décrit maintenant, à titre d'exemples, une forme de réalisation préférentielle du fauteuil roulant objet de l'invention, en se référant au dessin annexé, et quelques variantes de détail entrant également dans le cadre de l'invention.

  • La fig. 1 est une vue en perspective d'ensemble du fauteuil roulant.
  • La fig. 2 est une vue également en perspective du squelette du châssis du fauteuil avec les roues motrices, l'arbre d'entraînement et les mains courantes.
  • La fig. 3 est un dessin en perspective éclatée des éléments visibles à la fig. 2.
  • La fig. 4 est une vue en coupe verticale par l'arbre d'entraînement, montrant les éléments de la fig. 3.
  • Les fig. 5 et 6 sont des vues en coupe partielle par un plan vertical passant par l'arbre d'entraînement, montrant la roue motrice et les mains courantes montées du côté droit du fauteuil, avec la petite main courante dans des positions rentrée et sortie respectivement.
  • Les fig. 7A à 7D sont des demi-vues en coupe partielle illustrant une variante d'exécution pour le montage de la petite main courante.
  • Les fig. 8A à 8D illustrent les détails respectifs A, B, C et D des fig. 7A à 7D.
An exemplary embodiment of the wheelchair object of the invention will now be described, by way of example, with reference to the appended drawing, and some variations of detail also falling within the scope of the invention.
  • The Fig. 1 is an overall perspective view of the wheelchair.
  • The Fig. 2 is also a perspective view of the skeleton of the chair frame with the drive wheels, the drive shaft and the handrails.
  • The Fig. 3 is an exploded perspective drawing of the elements visible to the Fig. 2 .
  • The Fig. 4 is a vertical sectional view through the drive shaft, showing the elements of the Fig. 3 .
  • The Fig. 5 and 6 are partial sectional views through a vertical plane passing through the drive shaft, showing the driving wheel and the handrails mounted on the right side of the chair, with the small handrail in retracted and exited positions respectively.
  • The Fig. 7A to 7D are half-views in partial section illustrating an alternative embodiment for mounting the small handrail.
  • The Fig. 8A to 8D illustrate the respective details A, B, C and D of Fig. 7A to 7D .

Description détaillée des modes de réalisation préférés de l'inventionDetailed Description of the Preferred Embodiments of the Invention

La fig. 1 montre l'aspect général d'un fauteuil roulant selon la forme de réalisation préférée de la présente invention. Ce fauteuil roulant comporte deux roues motrices 1 et 2 montées coaxialement sur un arbre d'entraînement 3 et disposées de part et d'autre d'un châssis 4 sur lequel un siège muni d'accoudoirs 5 et un dossier 6 sont aménagés. Les roues 1 et 2 sont des roues arrière assurant l'entraînement du fauteuil alors que deux petites roues directrices 7, dont seule la roue gauche est visible à la fig. 1, supportent le châssis 4 à l'avant. Les roues 1 et 2 sont commandées à la main par l'occupant du fauteuil tandis que les roues directrices 7 réagissent automatiquement aux impulsions venant des roues 1 et 2.The Fig. 1 shows the general appearance of a wheelchair according to the preferred embodiment of the present invention. This wheelchair has two drive wheels 1 and 2 mounted coaxially on a drive shaft 3 and disposed on either side of a frame 4 on which a seat with armrests 5 and a backrest 6 are arranged. The wheels 1 and 2 are rear wheels ensuring the drive of the wheelchair while two small steering wheels 7, of which only the left wheel is visible at the Fig. 1 , support chassis 4 at the front. The wheels 1 and 2 are manually controlled by the occupant of the wheelchair while the steering wheels 7 react automatically to the pulses coming from the wheels 1 and 2.

Selon une particularité importante de l'invention, une grande main courante 8 et une petite main courante 9 sont montées coaxiale ment à l'arbre 3 et aux roues 1 et 2 sur le côté droit du fauteuil de manière à permettre à l'occupant de commander le fauteuil de sa seule main droite.According to an important feature of the invention, a large handrail 8 and a small handrail 9 are mounted coaxially with the shaft 3 and the wheels 1 and 2 on the right side of the chair so as to allow the occupant to order the chair with his right hand only.

A la fig. 2, on voit le principe de construction du châssis 4 avec l'arbre 3, les roues motrices 1 et 2 et les mains courantes 8 et 9. Le châssis 4 comporte deux cadres rigides rectangulaires 10 et 11 maintenus parallèles l'un à l'autre et en positions verticales, les montants avant de ces cadres servant de moyens de pivotement pour des barres à axes verticaux auxquelles sont fixées des fourches de roulement des roues 7. Les montants arrière des cadres 10 et 11 sont équipés de boîtiers 12 et 13 supportant des coussinets de paliers 14 et 15 dans lesquels passe l'arbre 3, lui-même composé de plusieurs éléments comme on le verra plus loin. Les boîtiers 12 et 13 sont conçus de manière que les coussinets 14 et 15 puissent être placés à différentes hauteurs afin qu'un même type de fauteuil puisse être adapté à des occupants de différentes tailles. Tous ces éléments sont représentés également dans la vue éclatée de la fig. 3 où on voit l'assemblage composite de l'arbre 3. Cet assemblage de différents éléments joue un rôle important pour l'obtention du but visé par l'invention en collaboration avec l'agencement de la petite main courante 9.To the Fig. 2 , we see the principle of construction of the frame 4 with the shaft 3, the driving wheels 1 and 2 and the handrails 8 and 9. The frame 4 comprises two rigid rectangular frames 10 and 11 maintained parallel to each other and in vertical positions, the front uprights of these frames serving as pivoting means for bars with vertical axes which are fixed wheel forklift 7. The rear uprights of the frames 10 and 11 are equipped with housings 12 and 13 supporting pads of bearings 14 and 15 in which passes the shaft 3, itself composed of several elements as will be seen later. The housings 12 and 13 are designed so that the pads 14 and 15 can be placed at different heights so that the same type of chair can be adapted to occupants of different sizes. All these elements are also represented in the exploded view of the Fig. 3 where we see the composite assembly of the shaft 3. This assembly of different elements plays an important role in achieving the purpose of the invention in collaboration with the arrangement of the small handrail 9.

La roue 2 comporte un moyeu 16 dont l'alésage est emmanché à force sur une partie extérieure d'un premier élément 17 de l'arbre 3. Cet élément est un axe à démontage rapide pouvant être assuré dans sa position de pivotement par un écrou de réglage 18. Les axes à démontage rapide sont connus en soi; il n'est donc pas nécessaire de décrire ici en détail l'élément 17. Il présente après la partie emmanchée dans le moyeu 16 de la roue 2 une portée lisse munie d'un garnissage, engagée dans le coussinet 15 du boîtier 13 et se termine par une portée de forme hexagonale mâle, engagée elle-même librement dans une entrée hexagonale femelle d'un premier tronçon d'une traverse télescopique 19 comportant deux tronçons engagés l'un dans l'autre et liés en rotation tout en étant susceptibles de se déplacer longitudinalement pour permettre des adaptations de la longueur de la traverse. Enfin, un dernier élément 20 de l'arbre 3 est un second axe à démontage rapide muni d'un écrou de réglage 21. Son extrémité interne présente une forme hexagonale mâle accouplée à l'extrémité femelle du second tronçon de la traverse 19, Il présente ensuite un garnissage engagé dans le coussinet 14 du boîtier 12 puis une portée supportant deux roulements à billes d'un palier 22 formant le moyeu de la roue 1. A son extrémité extérieure, l'axe à démontage rapide 20 présente finalement une forme hexagonale mâle engagée à force dans une partie hexagonale femelle d'un flasque 23 ayant la forme d'une cuvette avec une bride circulaire plane. Ce flasque retient et maintient en place la petite main courante 9. Sa présence intégrée à l'assemblage de l'arbre 3 permet de changer très facilement l'orientation de la petite main courante 9, comme on va le voir en considérant les structures exposées aux fig. 4, 5 et 6.The wheel 2 comprises a hub 16 whose bore is force-fitted on an outer part of a first element 17 of the shaft 3. This element is a fast disassembly shaft that can be secured in its pivoting position by a nut. 18. The axes of rapid disassembly are known per se; it is therefore not necessary to describe here in detail the element 17. It has after the portion fitted in the hub 16 of the wheel 2 a smooth bearing provided with a lining, engaged in the bearing 15 of the housing 13 and ends with a hexagonal male-shaped bearing, itself engaged freely in a hexagonal female inlet of a first section of a telescopic crossmember 19 comprising two sections engaged one inside the other and connected in rotation while being capable of move longitudinally to allow adjustments to the length of the crossbar. Finally, a last element 20 of the shaft 3 is a second axis with rapid disassembly provided with an adjusting nut 21. Its inner end has a hexagonal male shape coupled to the female end of the second section of the cross member 19, 11 then presents a lining engaged in the bearing 14 of the housing 12 and a support bearing two ball bearings of a bearing 22 forming the hub of the wheel 1. At its outer end, the rapid disassembly axis 20 finally has a hexagonal shape male forcibly engaged in a hexagonal female part of a flange 23 having the shape of a bowl with a flat circular flange. This flange holds and holds in place the small handrail 9. Its integrated presence in the assembly of the shaft 3 makes it very easy to change the orientation of the small handrail 9, as will be seen by considering the exposed structures to the Fig. 4 , 5 and 6 .

En ce qui concerne ces figures, les dispositions principales ayant déjà été mentionnées, il suffira de noter quelques détails importants des éléments représentés. Ainsi, les roues 1 et 2 comportent des jantes métalliques 24 sur lesquelles sont montés des bandages pneumatiques partiellement pleins 25. Les jantes des deux roues portent des barrettes 26 permettant en option de fixer à l'une ou à l'autre roues des barres transversales telles que les barres 27 de la roue 1. Ces barres relient à la roue motrice 1 la grande main courante 8 constituée simplement d'un anneau extérieur circulaire 34 muni d'une bride interne d'où partent les barres 27. Les jantes 24 des roues 1 et 2 sont reliées aux moyeux 16 pour la roue 2, et 22 pour la roue 1, par des rayons en fils métalliques ou en plastique accrochés aux oeillets 28. Les cadres 10 et 11 de la structure 4 du châssis sont formés de tubes métalliques dont les éléments supérieurs horizontaux sont équipés de garnitures 29 fixées sur le flanc et faisant partie intégrante des cadres 10 et 11 de la structure 4. On voit comment les coussinets de paliers 14 et 15 sont supportés par les boîtiers 12 et 13 qui, fixés aux cadres 10 et 11, permettent de placer ces coussinets à différentes hauteurs. Les liaisons horizontales entre les cadres 10 et 11 ne sont pas représentées. On sait qu'elles peuvent être de différents types. Les coussinets 14 et 15 forment des paliers lisses engagés librement sur des portées cylindriques des segments d'axes 17 et 20, tandis que le pivotement des roues 1 et 2 est assuré d'un côté par emmanchement à force du segment d'axe à démontage rapide 17 dans le palier 16 et de l'autre par engagement du segment 20 dans les roulements du palier 22 de la roue 1.With regard to these figures, the main provisions having already been mentioned, it will suffice to note some important details of the elements represented. Thus, the wheels 1 and 2 comprise metal rims 24 on which are mounted partially filled pneumatic tires 25. The rims of the two wheels carry bars 26 allowing optionally to attach to one or the other wheels of the transverse bars such bars 27 of the wheel 1. These bars connect to the driving wheel 1 the large handrail 8 consists simply of a circular outer ring 34 provided with an inner flange from which the bars 27. Wheels 1 and 2 are connected to the hubs 16 for the wheel 2, and 22 for the wheel 1, by spokes of metal or plastic hung from the eyelets 28. The frames 10 and 11 of the structure 4 of the frame are formed of tubes metal whose upper horizontal elements are equipped with linings 29 fixed on the sidewall and integral with the frames 10 and 11 of the structure 4. It is seen how the bearing pads 14 and 15 are supported by the bo 12 and 13 which, fixed to the frames 10 and 11, allow to place these pads at different heights. The horizontal links between the frames 10 and 11 are not shown. We know that they can be of different types. The bearings 14 and 15 form smooth bearings freely engaged on cylindrical bearings of the axis segments 17 and 20, while the pivoting of the wheels 1 and 2 is ensured on one side by force-fitting the disassembly axis segment. 17 in the bearing 16 and the other by engagement of the segment 20 in the bearings of the bearing 22 of the wheel 1.

Finalement, il reste à décrire la possibilité de modification de la position de l'anneau extérieur de la petite main courante 9, en considérant les fig. 5 et 6. La petite main courante 9 est constituée d'un anneau extérieur 30 sous forme d'un cercle rigide, de bras radiaux 31 par exemple au nombre de trois, et d'une platine centrale 32 ayant la forme d'un disque avec une ouverture centrale ajustée au diamètre extérieur de la partie en forme de cuvette du flasque 23. Les éléments 30, 31, 32 sont rigidement assemblés par exemple par soudage et on voit (fig. 5) que les bras radiaux 31 sont légèrement inclinés par rapport aux plans parallèles définis par l'anneau extérieur 30 et la platine 32. La platine 32 est engagée sur le flasque 23 à l'intérieur de sa bride périphérique et fixée par trois boulons 33 avec écrous freinant 33'. Les dimensions sont telles que l'anneau extérieur 30 de diamètre réduit par rapport à l'anneau 34 de la grande main courante 8 se trouve décalé axialement vers l'intérieur, ce qui réduit l'encombrement du fauteuil en largeur par rapport à la disposition inversée (fig. 6) obtenue comme on l'a déjà signalé par renversement de la petite main courante 9 tout en maintenant sa platine centrale sur le côté intérieur de la bride périphérique du flasque 23. La disposition de la fig. 6 ainsi obtenue facilite à l'occupant du fauteuil l'accès alternatif par une même main à l'un ou à l'autre des anneaux extérieurs 30 ou 34 de la petite ou de la grande main courante. Pour passer d'une disposition à l'autre il suffit de dégager l'ensemble formé par la petite main courante 9, le flasque 23 et le segment d'axe 20, puis de séparer la main courante du flasque par dévissage des boulons 33. Le remontage dans la position inversée de la main courante est tout aussi rapide grâce aux propriétés de l'axe à démontage rapide. Dans une exécution préférée du fauteuil selon l'invention, on a constaté qu'un décalage axial de l'ordre de 10 mm entre l'anneau extérieur 30 et la platine 32 permettait de répondre aux besoins.Finally, it remains to describe the possibility of modifying the position of the outer ring of the small handrail 9, considering the Fig. 5 and 6 . The small handrail 9 consists of an outer ring 30 in the form of a rigid circle, radial arms 31 for example three in number, and a central plate 32 having the shape of a disc with a central opening adjusted the outer diameter of the bowl-shaped portion of the flange 23. The elements 30, 31, 32 are rigidly assembled, for example by welding, and show ( Fig. 5 ) that the radial arms 31 are slightly inclined relative to the parallel planes defined by the outer ring 30 and the plate 32. The plate 32 is engaged on the flange 23 inside its peripheral flange and fixed by three bolts 33 with braking nuts 33 '. The dimensions are such that the outer ring 30 of reduced diameter relative to the ring 34 of the large handrail 8 is offset axially inwards, which reduces the size of the armchair in width relative to the arrangement reversed ( Fig. 6 ) obtained as already indicated by reversing the small handrail 9 while maintaining its central plate on the inner side of the flange of the peripheral flange 23. The provision of the Fig. 6 thus obtained facilitates the occupant of the chair reciprocal access by the same hand to one or other of the outer rings 30 or 34 of the small or large handrail. To go from one arrangement to another, it suffices to disengage the assembly formed by the small handrail 9, the flange 23 and the segment of axis 20, then to separate the handrail from the flange by unscrewing the bolts 33. The reassembly in the inverted position of the handrail is equally fast thanks to the properties of the quick disassembly axis. In a preferred embodiment of the chair according to the invention, it was found that an axial offset of the order of 10 mm between the outer ring 30 and the plate 32 could meet the needs.

La disposition décrite en référence aux dessins comporte un grand nombre d'avantages au point de vue de la robustesse des constituants, de la facilité de montage et de démontage, de la rationalisation des productions, de la fiabilité des produits. Toutefois, d'autres dispositions assurant aussi des possibilités de modifier l'accès aux mains courantes par une même main pour certains handicapés sont possibles sans sortir du cadre de l'invention. Ainsi, comme représenté à titre d'exemple aux fig. 7A à 7D et 8A à 8D, on peut placer une entretoise 35 échangeable et/ou déplaçable entre la platine centrale 32 de la petite main courante et la bride de fixation du flasque 23 (fig. 8B et 8D) ou derrière la platine centrale 32, entre la platine centrale 32 de la petite main courante et les écrous 33' (fig. 8A et 8C). Il est ainsi possible d'obtenir quatre positions d'ajustement A1, A2, A3 et A4 en combinant le réglage par retournement de la petite main courante et l'interposition de l'entretoise 35, permettant ainsi d'adapter la facilité d'accès aux mains courantes.The arrangement described with reference to the drawings has a large number of advantages from the point of view of the robustness of the constituents, the ease of assembly and disassembly, the rationalization of the productions, the reliability of the products. However, other provisions also providing opportunities to change the access to the handrails by the same hand for some disabled are possible without departing from the scope of the invention. Thus, as shown by way of example to Fig. 7A to 7D and 8A to 8D , we can place a spacer 35 exchangeable and / or displaceable between the central plate 32 of the small handrail and the fastening flange of the flange 23 ( Fig. 8B and 8D ) or behind the central plate 32, between the central plate 32 of the small handrail and the nuts 33 '( Fig. 8A and 8C ). It is thus possible to obtain four adjustment positions A1, A2, A3 and A4 by combining the turning adjustment of the small handrail and the interposition of the spacer 35, thus making it possible to adapt the ease of access to the handrails.

Le montage de la platine centrale de la petite main courante sur le flasque de liaison à l'arbre d'entraînement pourrait aussi être différent de ce qui est représenté aux dessins.The mounting of the central plate of the small handrail on the connecting flange to the drive shaft could also be different from what is shown in the drawings.

Il peut également être envisagé que la petite main courante soit fixe et que ce soit la grande main courante qui soit réglable. De la même manière, on peut envisager d'avoir les deux mains courantes réglables.It can also be envisaged that the small handrail is fixed and that it is the large handrail that is adjustable. In the same way, we can consider having both adjustable handrails.

Bien entendu, les mains courantes décrites ci-dessus peuvent être réalisées au choix du constructeur sur le côté droit ou sur le côté gauche du fauteuil.Of course, the handrails described above can be made at the choice of the manufacturer on the right side or on the left side of the chair.

Claims (8)

  1. Wheelchair having two coaxial drive wheels (1, 2) arranged on either side of the chair, on the sides of its frame (4), and having, on at least one of the sides, two hand rims (8, 9) each having an outer ring (34, 30) moving in a fixed plane perpendicular to the axis of the drive wheels (1, 2), these hand rims being coaxial with the drive wheels and each coupled to one of the latter, characterized in that at least one of said hand rims (9), of which the axial position of the outer ring (30) can be modified, is a rigid part comprising said outer ring (30) and a central mounting plate (32) which is offset axially with respect to the outer ring (30), said hand rim (9) being mounted on a pivot device comprising a hand rim flange (23) and a drive shaft (3) positioned between said wheels (1, 2) such that the hand rim (9) can be turned around by 180 degrees on the flange (23), in that the plate (32) is engaged on the flange (23) inside a peripheral flange disc of said flange (23) and in that a set of bolts (33) and nuts (33') allows the plate (32) to be removably attached to the flange (23) so as to define two different positions of said outer ring (30), one of the positions being offset axially inwards so as to reduce the width of the wheelchair with respect to the other position.
  2. Wheelchair according to Claim 1, characterized in that said hand rim (9), of which the axial position of the outer ring (30) can be modified, is located on the opposite side of the chair from the drive wheel (2) to which this hand rim is associated.
  3. Wheelchair according to either of Claims 1 and 2, characterized in that the diameter of the outer ring (30) of said hand rim (9), of which the axial position of the outer ring (30) can be modified, is smaller than that of the other hand rim (8).
  4. Wheelchair according to any one of the preceding claims, characterized in that the plate (32) is in the shape of a disc which can be mounted in an inverted manner on a circular flange disc of the flange (23).
  5. Wheelchair according to any one of the preceding claims, characterized in that said outer ring (30) and said plate (32) are offset axially by a distance of the order of 10 mm.
  6. Wheelchair according to any one of the preceding claims, characterized in that the drive shaft (3) between said wheels and hand rims comprises a quick-release axle segment (20) which is rigidly attached to the centre of the cup-shaped flange (23) having a circular flange disc which retains the circular plate (32) forming a central element of the hand rim (9), of which the position of the outer ring (30) can be modified, and in that means (21) connected to the quick-release axle segment (20) make it possible for the assembly consisting of the hand rim (9) having the flange (23) and the quick-release axle segment (20) to be removed from the chair and separated, and then for the hand rim (9) to be separated from the flange (23), turned around and reattached, and for the assembly to be reinserted into the drive shaft (3).
  7. Chair according to Claim 6, characterized in that, in the hand rim (9), of which the position of the outer ring (30) can be modified, rigid and rigidly attached radial spokes (31) connect the outer ring (30) to the central plate (32), these spokes being inclined with respect to the two parallel planes defined by the outer ring (30) and the central plate (32) such that, by inverting the central plate (32) against the flange disc of the attachment flange (23), the plane of the outer ring (30) is moved axially by a distance of the order of 10 mm.
  8. Chair according to either of Claims 6 and 7, characterized in that it further comprises a spacer (35) which can be exchanged and/or moved, and is designed to be positioned between the circular plate (32) and the flange (23), or behind the circular plate (32), between the plate (32) and attachment elements (33') of the plate (32) on the flange (23).
EP07100252.1A 2007-01-08 2007-01-08 Wheelchair with double handrail Not-in-force EP1941855B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07100252.1A EP1941855B1 (en) 2007-01-08 2007-01-08 Wheelchair with double handrail

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07100252.1A EP1941855B1 (en) 2007-01-08 2007-01-08 Wheelchair with double handrail

Publications (2)

Publication Number Publication Date
EP1941855A1 EP1941855A1 (en) 2008-07-09
EP1941855B1 true EP1941855B1 (en) 2014-04-23

Family

ID=38057317

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07100252.1A Not-in-force EP1941855B1 (en) 2007-01-08 2007-01-08 Wheelchair with double handrail

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2702970A1 (en) * 2012-09-03 2014-03-05 Université de Toulon Asymmetrical wheel kit for manual wheelchair and wheelchair fitted with said wheel kit to facilitate the practice of a throwing sport
JP6742493B1 (en) * 2019-11-29 2020-08-19 合同会社ライフスペース研究所 Wheelchair that can be operated with one hand

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191222576A (en) * 1912-10-04 1912-12-12 James Philpot Witham A Merlin "Self-propelling" Chair Capable of being Operated by One Hand.
GB714306A (en) * 1952-06-04 1954-08-25 Bencraft 1949 Ltd Improvements relating to invalid chairs and the like
GB2122141A (en) * 1982-06-16 1984-01-11 Vessa Ltd Transmission for one arm driven wheelchairs
US5306035A (en) * 1993-02-16 1994-04-26 Quickie Designs Inc. Single-hand manual drive wheelchair assembly
FR2731898B1 (en) * 1995-03-13 1997-09-26 Tis Sa QUICK DISASSEMBLY HUB ASSEMBLY FOR WHEELCHAIRS FOR HEMIPLEGIC DISABLED
GB2359529A (en) 2000-02-26 2001-08-29 Neill Moreland Wheelchair control for a person with one arm
EP1627619A3 (en) * 2004-08-16 2006-05-17 Samuel Lesley A steering means and quick release arrangement for a wheelchair

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