EP0201423A1 - Collapsible wheel chair with means for quick unbolting - Google Patents

Collapsible wheel chair with means for quick unbolting Download PDF

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Publication number
EP0201423A1
EP0201423A1 EP86400968A EP86400968A EP0201423A1 EP 0201423 A1 EP0201423 A1 EP 0201423A1 EP 86400968 A EP86400968 A EP 86400968A EP 86400968 A EP86400968 A EP 86400968A EP 0201423 A1 EP0201423 A1 EP 0201423A1
Authority
EP
European Patent Office
Prior art keywords
bar
slide
chair
rod
holding
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
EP86400968A
Other languages
German (de)
French (fr)
Other versions
EP0201423B1 (en
Inventor
Jean-Jacques Emile L. Chabrol
Jean-Pierre François M. Lambert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
COMPOSITES AQUITAINE SA
POIRIER ETS
Poirier Ets SA
Original Assignee
COMPOSITES AQUITAINE SA
POIRIER ETS
Poirier Ets SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by COMPOSITES AQUITAINE SA, POIRIER ETS, Poirier Ets SA filed Critical COMPOSITES AQUITAINE SA
Priority to AT86400968T priority Critical patent/ATE56613T1/en
Publication of EP0201423A1 publication Critical patent/EP0201423A1/en
Application granted granted Critical
Publication of EP0201423B1 publication Critical patent/EP0201423B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A61G5/08—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
    • 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
    • A61G5/0891—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable having rigid supports, e.g. seat or back supports which retain their shape after folding of the wheelchair
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32254—Lockable at fixed position
    • Y10T403/32426—Plural distinct positions
    • Y10T403/32442—At least one discrete position
    • Y10T403/32451—Step-by-step adjustment
    • Y10T403/32459—Retainer extends through aligned recesses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/60—Biased catch or latch
    • Y10T403/602—Biased catch or latch by separate spring
    • Y10T403/604—Radially sliding catch

Definitions

  • the present invention relates to a foldable armchair, in particular an armchair for the disabled, which comprises rapid unlocking means.
  • a foldable chair comprising means for holding the chair in the unfolded position, which are foldable, means for locking in the unfolded position of these holding means, which comprise a bar; a slide mounted to slide - on said bar and coupled to said holding means so as to prevent the folding of these holding means when it occupies an extreme position along the bar, and to authorize this folding when it leaves this extreme position and slides along the bar, means for locking said slide in said extreme position, and corresponding unlocking means.
  • the means for blocking the slide F can comprise a push button which penetrates into openings made in the bar C.
  • the means for unlocking the slide they are not specified.
  • the object of the invention is to provide a foldable chair of the type described above, which can be very easily unlocked for its folding.
  • said unlocking means comprise a rod mounted mobile on the chair so as to be able to be brought into a position of cooperation with said locking means for unlocking said slide.
  • said bar is hollow, said rod being disposed inside the bar so as to be able to slide longitudinally.
  • said slide blocking means comprise an erasable lug carried by the slide and capable of projecting inside the bar through an opening arranged in line with said extreme position of the slide, the rod having an end arranged for push said lug out of the bar when it is moved along the bar.
  • said rod is biased elastically in a direction opposite to said slide blocking means and is extended, at its end opposite to said blocking means, outside the bar by a pusher.
  • the chair comprises two sides
  • said means for holding the chair in the unfolded position comprise two connecting elements distant from each other by which said sides are connected to each other, each element of connection comprising two portions articulated relative to each other at a first common end, each portion being moreover connected in an articulated manner on one of said sides by its other end, said bar extending between said connecting elements and being hingedly connected to said common ends of the aforementioned portions, said slider being coupled to one of said connecting elements by means of two coupling elements which are each articulated by one end on said slider and by another end at l 'one of the points of articulation of said connecting element on the sides of the chair.
  • said bar extends longitudinally relative to the chair. the end of said rod opposite to said locking means being turned towards the front of the fault
  • the chair shown in the figures comprises two sidewalls 1, 2, parallel, on each of which are attached a rear wheel of large diameter 3.4 and a front wheel of small diameter 5.6.
  • a "handrail" 7,8 is attached to each of the two rear wheels 3, 4.
  • the vertical direction will be defined as being that perpendicular to the bearing plane of the wheels of the chair on the ground.
  • Each flank 1,2 carries, at the front and at the rear and on the inside of the chair situated between the two flanks, a yoke 26, 27 and 28, 29 receiving a vertical axis 30, 31 and 32,33.
  • the chair is foldable and has means for holding in the unfolded position which include. a front connecting element 9 and a rear connecting element 10 each consisting of two portions 11, 12 and 13, 14.
  • the chair also comprises a bar 15 arranged in the median longitudinal plane of the chair, parallel to the sides 1,2.
  • This bar carries in particular at each end a double yoke 16,17 each supporting two vertical axes 18, 19 and 20, 21.
  • the two axes of each double yoke 16, 17 are arranged in a common plane perpendicular to the bar 15.
  • a slide 22 On the bar 15 is slidably mounted a slide 22 which itself carries a double yoke 23 comprising two vertical aves 24, 25. These axes are. arranged in a common plane perpendicular to the bar 15.
  • the two portions 11, 12 of the front connecting element 9 are respectively articulated, on the one hand on the axis 30, 32 of the adjacent flank 1,2 and on the other hand on the double front yoke 16 of the bar 15 , more precisely on the axis 18.19.
  • the slider 22 is coupled to the rear connecting element 10 by means of two coupling elements 34, 35 which are respectively articulated, on the one hand on the axis 24.25 of the double yoke 23 of the slider 22 and d on the other hand on the axis 31, 33 of the adjacent flank 1,2.
  • the sides 1,2, liaiso.n elements 9, 10 and the coupling elements 34,35 are, in this embodiment, rigid polygons which extend in vertical planes.
  • the slider 22 occupies an extreme rear position along the bar 15 in which it is immobilized by means of locking means described below.
  • the connecting element 10 then forms with the two coupling elements 34, 35 a non-deformable triangle keeping the two sides 1.2 of the chair separated from one another.
  • the two portions 11, 12 and 13,14 of each connecting element extend in the extension of one another, perpendicular to the sides 1,2.
  • a strap 36 is fixed by its two ends respectively to the portion 11 and to the portion 12 of the connecting element 9, in the vicinity of the bar 15, and makes it possible to pull the bar, which is directed towards the before, in order to unfold the chair again.
  • the blocking means of the slide 22 will be specified with reference to FIG. 3.
  • the bar 15 is a hollow cylindrical tube which has, at a determined location along the bar - namely at the right of said extreme rear position of the slide 22 - an opening 42 and, near its rear end, two opposite openings 43, 44.
  • Le_coulisseau 22 comprises a cylindrical sleeve 45 which carries said double yoke 23 not visible on this fiqure, as well as a tubular extension 40 extending vertically downwards and opening inside the slide 22 by an opening 41 of a diameter .meter smaller than the inside diameter of said tubular extension 40.
  • a cylindrical lug 46 is housed in the tubular extension 40 of the slide 22. It has a shoulder 47 in its median part and a rounded end 48 penetrating inside the conllisseau 22.
  • a helical spring 49 is threaded on the other end 50 of the lug 46.
  • the slide 22 thus equipped is fitted on the bar 15, the lug 46 being, to do this, pushes outwards from the conlisseau 22.
  • the slide 22 is located at the opening 42 of the bar 15, the lug 46 plunges inside this opening: the slide is then blocked.
  • the double front yoke 16 of the bar 15 is hollow and extended transversely by a tubular part 52.
  • This tubular part 52 has a bottom 53 which has a central opening 54.
  • the double front yoke 16 is fitted by its tubular part 52 in the end before the bar 15 and it is held there for example by gluing.
  • the actual unlocking means comprise a rod 55 threaded over its entire length, which carries, near its rear end, an end piece 56.
  • This end piece 56 is cylindrical and ends, at its end directed towards the rear of the chair, by a frustoconical part 57.
  • the outside diameter of the end piece 56 is very slightly less than the inside diameter of the bar 15.
  • the end piece 56 is axially threaded so that it can be screwed onto the rod 55. It is locked in a axial position along the rod by means of a lock nut 58.
  • the rod 55 In the vicinity of its front end 61, the rod 55 is provided with a nut 59 locked in the axial position by a lock nut 60.
  • the rod 55 thus equipped is threaded into the bar 15 by the rear end of the latter cf. It crosses the bottom 53 of the double front yoke 16, while the nut 59 and its lock nut 60 abut against this bottom.
  • a helical spring 62 On the front end 61 of the rod 55 is threaded a helical spring 62, then a cap-shaped pusher 63 is screwed onto the rod 55.
  • the spring 62 therefore bears on the bottom 53 and exerts a push on the pusher 63 , that is to say on the rod 55, this thrust being directed towards the front of the chair.
  • the axial position of the endpiece 66 is adjusted so that the latter is flush, by its frustoconical part 57, with the lug 46.
  • Abutment means are preferably provided so that when the chair is unfolded, it is immobilized in its unfolded position ( Figure 1), and does not risk folding back in the opposite direction.
  • these abutment means comprise a tube 64 whose length is equal to the distance between the slide 22 - when it is blocked - and the rear end of the bar 15. This tube 64 externally covers the bar 15 and Therefore prevents the slide 22 from sliding further towards the rear of the bar 15, beyond its blocking position.
  • the double rear yoke 17 of the bar 15 comprises a transverse tubular portion 66 by which it is introduced into the bar 15.
  • the tube 64 and the double rear clevis 17 of the bar 15 are fixed to the latter by means of a bolt 65 transversely passing through the tube 64, the bar 15 and the tubular portion 66 of the double rear clevis 17.
  • the user of the chair can unlock it by exerting a simple pressure on the pusher 63, directed towards the rear.
  • the tip 57 ( Figure 3) then pushes back, through its frustoconical part 57 and then through its cylindrical part. the lug 46 inside the tubular extension 40 of the slide 22.
  • the user must exert a push on the sides 1,2 of the chair tending to bring them closer to each other.
  • This thrust on the sides 1, 2 tends to move the slide 22 forwards: the rounded end 48 of the lug 46 allows the latter to come out of the opening 42 of the bar 15.
  • the chair is in a partially folded position.
  • the knife 22 occupies a position 67 shown in phantom in FIG. 3.
  • slide blocking means are such that it is not necessary to reset them after having unlocked: a simple push to move the two flanks 1,2 of the chair apart causes a new blocking.
  • the rod 55 (FIG. 3) could, in a variant embodiment not shown, be controlled from the rear of the chair, and this, thanks to the symmetry of the locking means with respect to a plane perpendicular to the bar 15 and passing through the lug 46. It would suffice to turn all of the release means from the front to the rear, the rod extending into the bar from its rear end and the unblocking of the piston being caused by a push on the pusher, directed forwards.
  • the invention is not limited to an armchair in which the rod 55 for unlocking the slide is located in the bar 15; it also relates to all variants in which the rod 55 is mounted movably on the chair 1 in a different manner, this rod can in any case be brought into a position of cooperation with means for releasing the slide.

Abstract

A folding chair is provided comprising means for holding the chair in the opened out position, which means are foldable, means for locking these holding means in the opened out position, which comprise a bar, a slide mounted for sliding on said bar and coupled to said holding means so as to prevent said holding means from folding up again when it occupies an end position along the bar and for allowing such folding up when it leaves this end position and slides along the bar, means for locking said slide in said end position and corresponding unlocking means. Said unlocking means comprises a rod, mounted for moving on the chair so as to be able to be brought into a position in which they cooperate with said locking means for unlocking said slide.

Description

La présente invention est relative à un fauteuil pliable, notamment un fauteuil pour handicapés, qui comprend des moyens de déverrouillage rapide.The present invention relates to a foldable armchair, in particular an armchair for the disabled, which comprises rapid unlocking means.

Elle concerne plus précisément un fauteuil pliable comprenant des moyens de maintien du fauteuil en position dépliée, qui sont pliables, des moyens de verrouillage en position dépliée de ces moyens de maintien, qui comprennent un barreau; un coulisseau monté à coulissement - sur ledit barreau et attelé auxdits moyens de maintien de façon à empêcher le repliement de ces moyens de maintien lorsqu'il occupe une position extrême le long du barreau, et à autoriser ce repliement lorsqu'il quitte cette position extrême et coulisse le long du barreau, des moyens de blocage dudit coulisseau dans ladite position extrême, et des moyens de déblocage correspondants.It relates more precisely to a foldable chair comprising means for holding the chair in the unfolded position, which are foldable, means for locking in the unfolded position of these holding means, which comprise a bar; a slide mounted to slide - on said bar and coupled to said holding means so as to prevent the folding of these holding means when it occupies an extreme position along the bar, and to authorize this folding when it leaves this extreme position and slides along the bar, means for locking said slide in said extreme position, and corresponding unlocking means.

Un tel fauteuil est par exemple connu par le document US-A-2 896 693. Les moyens de blocage du coulisseau F peuvent comprendre un bouton-poussoir qui pénètre dans des ouvertures pratiquées dans le barreau C. Quant aux moyens de déblocage du coulisseau, ils ne sont pas précisés.Such an armchair is for example known from document US-A-2 896 693. The means for blocking the slide F can comprise a push button which penetrates into openings made in the bar C. As for the means for unlocking the slide, they are not specified.

A priori, il y a lieu, pour débloquer le coulisseau en vue de replier le fauteuil, de manoeuvrer ledit bouton-poussoir. Or l'accès de ce bouton-poussoir qui est situé sous le siège du fauteuil, est malaisé pour l'utilisateur, notamment lorsqu'il s'agit d'un handicapé.A priori, it is necessary, to unlock the slide in order to fold the chair, to operate said push button. However, the access of this push-button which is located under the seat of the wheelchair is difficult for the user, in particular when it is a disabled person.

Le but de l'invention est de proposer un fauteuil pliable du type décrit ci-dessus, qui puisse être très facilement déverrouillé en vue de son repliement.The object of the invention is to provide a foldable chair of the type described above, which can be very easily unlocked for its folding.

Selon l'invention, lesdits moyens de déblocage comprennent une tige montée mobile sur le fauteuil de façon à pouvoir être amenée dans une position de coopération avec lesdits moyens de blocage pour débloquer ledit coulisseau.According to the invention, said unlocking means comprise a rod mounted mobile on the chair so as to be able to be brought into a position of cooperation with said locking means for unlocking said slide.

Avantagensement, ledit barreau est creux, ladite tige etant disposée à l'intérieur du barreau de façon à pouvoir coulisser longitudinalement.Advantageously, said bar is hollow, said rod being disposed inside the bar so as to be able to slide longitudinally.

De préférence, lesdits moyens de blocage du coulisseau comprennent un ergot effaçable porté par le coulisseau et pouvant faire saillie à l'intérieur du barreau au travers d'une ouverture disposée au droit de ladite position extrême du coulisseau, la tige présentant une extrémité agencée pour repousser ledit ergot hors du barreau lorsqu'elle est déplacée le long du barreau.Preferably, said slide blocking means comprise an erasable lug carried by the slide and capable of projecting inside the bar through an opening arranged in line with said extreme position of the slide, the rod having an end arranged for push said lug out of the bar when it is moved along the bar.

Avantageusement, ladite tige est rappelée élastiquement dans une direction opposée auxdits moyens de blocage du coulisseau et se prolonge, à son extrémité opposée auxdits moyens de blocage, à l'extérieur du barreau par un poussoir.Advantageously, said rod is biased elastically in a direction opposite to said slide blocking means and is extended, at its end opposite to said blocking means, outside the bar by a pusher.

Selon un mode de réalisation préféré du fauteuil, celui-ci comprend deux flancs, lesdits moyens de maintien du fauteuil en position dépliée comprennent deux éléments de liaison distants l'un de l'autre par lesquels lesdits flancs sont reliés entre eux, chaque élément de liaison comprenant deux portions articulées l'une par rapport à l'autre à une première extrémité commune, chaque portion étant par ailleurs reliée de façon articulée sur l'un desdits flancs par son autre extrémité, Ledit barreau s'étendant entre lesdits éléments de liaison et étant relié de façon articulée auxdites extrémités communes des portions susdites, ledit coulisseau étant attelé à l'un desdits éléments de liaison au moyen de deux éléments d'attelage qui sont articulés chacun par une extrémité sur ledit coulisseau et par une autre extrémité à l'un des points d'articulation dudit élément de Liaison sur les flancs du fauteuil.According to a preferred embodiment of the chair, it comprises two sides, said means for holding the chair in the unfolded position comprise two connecting elements distant from each other by which said sides are connected to each other, each element of connection comprising two portions articulated relative to each other at a first common end, each portion being moreover connected in an articulated manner on one of said sides by its other end, said bar extending between said connecting elements and being hingedly connected to said common ends of the aforementioned portions, said slider being coupled to one of said connecting elements by means of two coupling elements which are each articulated by one end on said slider and by another end at l 'one of the points of articulation of said connecting element on the sides of the chair.

De préférence, ledit barreau s'étend longitudinalement par rapport au fauteuil. l'extrémité de ladite tige opposée auxdits moyens de blocage étant tournée vers l'avant du fauteui1Preferably, said bar extends longitudinally relative to the chair. the end of said rod opposite to said locking means being turned towards the front of the fault

D'autres détails et avantages de l'invention apparaitront au couros de la description qui suit, d'un mode de réalisation donne à titre d'exemple non limitatif.Other details and advantages of the invention will appear in the course of the description which follows, of an embodiment given by way of nonlimiting example.

en regard des dessins annexés parmi lesquels :

  • - la figure 1 est une vue de dessus d'un fauteuil pliable selon l'invention, en position dépliée ;
  • - la figure 2 est une vue de dessus du fauteuil de la fiqure 1, en position partiellement repliée, et ;
  • - la figure 3 est une vue partielle en coupe longitudinale agrandie, selon la ligne III-III de la figure 1.
with regard to the appended drawings among which:
  • - Figure 1 is a top view of a foldable chair according to the invention, in the unfolded position;
  • - Figure 2 is a top view of the chair of the fiqure 1, in partially folded position, and;
  • - Figure 3 is a partial view in enlarged longitudinal section, along the line III-III of Figure 1.

Le fauteuil représenté sur les figures comprend deux flancs 1, 2, parallèles,sur chacun desquels sont rapportées une roue arrière de grand diamètre 3,4 et une roue avant de petit diamètre 5,6. Une "main courante" 7,8 est rapportée sur chacune des deux roues arrière 3, 4. Dans ce qui suit, la direction verticale sera définie comme étant celle perpendiculaire au plan d'appui des roues du fauteuil sur le sol.The chair shown in the figures comprises two sidewalls 1, 2, parallel, on each of which are attached a rear wheel of large diameter 3.4 and a front wheel of small diameter 5.6. A "handrail" 7,8 is attached to each of the two rear wheels 3, 4. In what follows, the vertical direction will be defined as being that perpendicular to the bearing plane of the wheels of the chair on the ground.

Chaque flanc 1,2 porte, à l'avant et à l'arrière et du côté intérieur du fauteuil situé entre les deux flancs, une chape 26, 27 et 28, 29 recevant un axe vertical 30, 31 et 32,33.Each flank 1,2 carries, at the front and at the rear and on the inside of the chair situated between the two flanks, a yoke 26, 27 and 28, 29 receiving a vertical axis 30, 31 and 32,33.

Le fauteuil est pliable et présente des moyens de maintien en position dépliée qui comprennent. un élément de Liaison avant 9 et un élément de liaison arriére 10 constitués chacun de deux portions 11, 12 et 13,14.The chair is foldable and has means for holding in the unfolded position which include. a front connecting element 9 and a rear connecting element 10 each consisting of two portions 11, 12 and 13, 14.

Le fauteuil comprend encore un barreau 15 disposé dans Le plan longitudinal médian du fauteuil, parallèlement aux flancs 1,2. Ce barreau porte notamment à chaque extrémité une double chape 16,17 supportant chacune deux axes verticaux 18, 19 et 20, 21. Les deux axes de chaque double chape 16, 17 sont disposés dans un plan commun perpendiculaire au barreau 15.The chair also comprises a bar 15 arranged in the median longitudinal plane of the chair, parallel to the sides 1,2. This bar carries in particular at each end a double yoke 16,17 each supporting two vertical axes 18, 19 and 20, 21. The two axes of each double yoke 16, 17 are arranged in a common plane perpendicular to the bar 15.

Sur le barreau 15 est monté à coulissement un coulisseau 22 qui porte lui-même une double chape 23 comportant deux aves verticaux 24, 25. Ces axes sont. disposés dans un plan commun perpendiculaire au barreau 15.On the bar 15 is slidably mounted a slide 22 which itself carries a double yoke 23 comprising two vertical aves 24, 25. These axes are. arranged in a common plane perpendicular to the bar 15.

Les deux portions 11, 12 de l'élément de liaison avant 9 sont respectivement articulées, d'une part sur l'axe 30, 32 du flanc adjacent 1,2 et d'autre part sur la double chape-avant 16 du barreau 15, plus précisément sur l'axe 18,19.The two portions 11, 12 of the front connecting element 9 are respectively articulated, on the one hand on the axis 30, 32 of the adjacent flank 1,2 and on the other hand on the double front yoke 16 of the bar 15 , more precisely on the axis 18.19.

Il en va de même pour les deux portions 13,14 de l'élément de liaison arrière 10 qui sont respectivement articulées sur l'axe 31,33 du flanc adjacent et d'autre part sur l'axe 20,21 de la double chape arrière 17 du barreau 15.The same goes for the two portions 13,14 of the rear connecting element 10 which are respectively articulated on the axis 31,33 of the adjacent side and on the other hand on the axis 20,21 of the double yoke rear 17 of the bar 15.

Le coulisseau 22 est attelé à l'élément de liaison arrière 10 au moyen de deux éléments d'attelage 34, 35 qui sont respectivement articulés, d'une part sur l'axe 24,25 de la double chape 23 du coulisseau 22 et d'autre part sur l'axe 31, 33 du flanc adjacent 1,2.The slider 22 is coupled to the rear connecting element 10 by means of two coupling elements 34, 35 which are respectively articulated, on the one hand on the axis 24.25 of the double yoke 23 of the slider 22 and d on the other hand on the axis 31, 33 of the adjacent flank 1,2.

Les flancs 1,2 , les éléments de liaiso.n 9, 10 et les éléments d'attelage 34,35 sont, dans cet exemple de réalisation, des polygones rigides qui s'étendent dans des plans verticaux.The sides 1,2, liaiso.n elements 9, 10 and the coupling elements 34,35 are, in this embodiment, rigid polygons which extend in vertical planes.

Tel que représenté sur la figure 1, le coulisseau 22 occupe une position extrême arrière le long du barreau 15 dans laquelle il est immobilisé grâce à des moyens de blocage décrits ci-après. L'élément de liaison 10 forme alors avec les deux éléments d'attelage 34,35 un triangle indéformable maintenant les deux flancs 1,2 du fauteuil écartés l'un de l'autre. Les deux portions 11, 12 et 13,14 de chaque élément de liaison s'étendent dans le prolongement l'une de l'autre, perpendiculairement aux flancs 1,2.As shown in Figure 1, the slider 22 occupies an extreme rear position along the bar 15 in which it is immobilized by means of locking means described below. The connecting element 10 then forms with the two coupling elements 34, 35 a non-deformable triangle keeping the two sides 1.2 of the chair separated from one another. The two portions 11, 12 and 13,14 of each connecting element extend in the extension of one another, perpendicular to the sides 1,2.

Lorsque le coulisseau 22 est débloqué de la façon décrite ci-après, l'utilisateur peut rapprocher manuellement l'un de l'autre les deux flanes 1, 2 du fauteuil, en poussant le barreau 15 vers l'arrière, le coulisseau 22 se déplaçant vers l'avant (figure 2) jusque une position dans laquelle les deux flanes 1, 2 sont juxtaposes.When the slide 22 is released in the manner described below, the user can manually bring the two blanks 1, 2 of the chair closer to each other, by pushing the bar 15 backwards, the slide 22 moving forward (Figure 2) to a position in which the two blanks 1, 2 are juxtaposed.

Une sangle 36 est fixée par ses deux extrémités respectivement sur La portion 11 et sur la portion 12 de l'élément de liaison 9, au voisinage du barreau 15, et permet d'effectuer une traction sur le barreau, qui est dirigée vers l'avant, en vue de déplier à nouveau le fauteuil.A strap 36 is fixed by its two ends respectively to the portion 11 and to the portion 12 of the connecting element 9, in the vicinity of the bar 15, and makes it possible to pull the bar, which is directed towards the before, in order to unfold the chair again.

Les moyens de blocage du coulisseau 22 vont être précisés en regard de la figure 3. Le barreau 15 est un tube cylindrique creux qui possède, en un endroit déterminé le long du barreau -à savoir au droit de ladite position extrême arrière du coulisseau 22- une ouverture 42 et, au voisinage de son extrémité arrière, deux ouvertures opposées 43, 44.The blocking means of the slide 22 will be specified with reference to FIG. 3. The bar 15 is a hollow cylindrical tube which has, at a determined location along the bar - namely at the right of said extreme rear position of the slide 22 - an opening 42 and, near its rear end, two opposite openings 43, 44.

Le_coulisseau 22 comprend une douille cylindrique 45 qui porte ladite double chape 23 non visible sur cette fiqure, ainsi qu'un prolongement tubulaire 40 s'étendant verticalement vers le bas et débouchant à l'intérieur du coulisseau 22 par une ouverture 41 d'un dia.mètre plus petit que le diamètre intérieur dudit prolonqement tubuLaire 40.Le_coulisseau 22 comprises a cylindrical sleeve 45 which carries said double yoke 23 not visible on this fiqure, as well as a tubular extension 40 extending vertically downwards and opening inside the slide 22 by an opening 41 of a diameter .meter smaller than the inside diameter of said tubular extension 40.

Un ergot cylindrique 46 est logé dans le proLongement tubulaire 40 du coulisseau 22. Il présente un épaulement 47 dans sa partie médiane et une extrémité arrondi.e 48 pénétrant à l'intérieur du conllisseau 22.A cylindrical lug 46 is housed in the tubular extension 40 of the slide 22. It has a shoulder 47 in its median part and a rounded end 48 penetrating inside the conllisseau 22.

Un ressort hélicoïdal 49 est enfilé sur l'autre extrémité 50 de l'ergot 46. Un chapeau 51 au travers duquel passe ladite autre extrémité 50, coiffe Le prolongement tubulaire 40.A helical spring 49 is threaded on the other end 50 of the lug 46. A cap 51 through which said other end 50 passes, covers the tubular extension 40.

Ainsi, le ressort 49 s'appuyant d'une part sur Le chapeau 51 et d'autre part sur l'épaulement 47 de l'ergot 46, ledit ergot est rappelé élastiquement vers l'intérieur du coulisseau.Thus, the spring 49 resting on the one hand on the cap 51 and on the other hand on the shoulder 47 of the lug 46, said lug is returned elastically towards the inside of the slide.

Le coulisseau 22 ainsi équipé est emmanché sur le barreau 15, l'ergot 46 étant, pour ce faire, repousse vers l'extérieur du conlisseau 22. Lorsque le coulisseau 22 se trouve au droit de l'ouverture 42 du barreau 15, l'ergot 46 plonge à l'intérieur de cette ouverture : le coulisseau est alors bloqué.The slide 22 thus equipped is fitted on the bar 15, the lug 46 being, to do this, pushes outwards from the conlisseau 22. When the slide 22 is located at the opening 42 of the bar 15, the lug 46 plunges inside this opening: the slide is then blocked.

Les moyens de déblocage du coulisseau 22 vont maintenant être explicités. La double chape avant 16 du barreau 15 est creuse et prolongée transversalement par une partie tubulaire 52. Cette partie tubulaire 52 comporte un fond 53 qui présente une ouverture centrale 54. La double chape avant 16 est emmanchée par sa partie tubulaire 52 dans l'extrémité avant du barreau 15 et elle y est maintenue par exemple par collage.The means for unlocking the slide 22 will now be explained. The double front yoke 16 of the bar 15 is hollow and extended transversely by a tubular part 52. This tubular part 52 has a bottom 53 which has a central opening 54. The double front yoke 16 is fitted by its tubular part 52 in the end before the bar 15 and it is held there for example by gluing.

Les moyens de déblocage proprement dits comprennent une tige 55 filetée sur toute sa longueur, qui porte, au voisinage de son extrémité arrière, un embout 56. Cet embout 56 est cylindrique et se termine, à son extrémité dirigée vers l'arrière du fauteuil, par une partie tronconique 57. Le diamètre extérieur de l'embout 56 est très légèrement inférieur au diamètre intérieur du barreau 15. L'embout 56 est taraudé axialement de façon qu'il puisse être vissé sur la tige 55. Il est bloqué dans une position axiale le long de la tige au moyen d'un contre-écrou 58.The actual unlocking means comprise a rod 55 threaded over its entire length, which carries, near its rear end, an end piece 56. This end piece 56 is cylindrical and ends, at its end directed towards the rear of the chair, by a frustoconical part 57. The outside diameter of the end piece 56 is very slightly less than the inside diameter of the bar 15. The end piece 56 is axially threaded so that it can be screwed onto the rod 55. It is locked in a axial position along the rod by means of a lock nut 58.

Au voisinage de son extrémité avant 61, la tige 55 est munie d'un écrou 59 bloqué en position axiale par un contre-écrou 60. La tige 55 ainsi équipée est enfillée dans le barreau 15 par l'extrémité arrière de celui- cf. Elle traverse Le fond 53 de la double chape avant 16, tandis que l'écrou 59 et son contre-écrou 60 butent contre ce fond.In the vicinity of its front end 61, the rod 55 is provided with a nut 59 locked in the axial position by a lock nut 60. The rod 55 thus equipped is threaded into the bar 15 by the rear end of the latter cf. It crosses the bottom 53 of the double front yoke 16, while the nut 59 and its lock nut 60 abut against this bottom.

Sur l'extrémité avant 61 de la tige 55 est enfilé un ressort hélicoidal 62, puis un poussoir en forme de capuchon 63 est vissé sur La tige 55. Le ressort 62 prend donc appui sur le fond 53 et exerce une poussée sur le poussoir 63, c'est-à-dire sur La tige 55, cette poussée étant dirigée vers l'avant du fauteuil. La position axiale de l'embout 66 est réglée de façon que celui-ci affleure, par sa partie tronconique 57, l'ergot 46.On the front end 61 of the rod 55 is threaded a helical spring 62, then a cap-shaped pusher 63 is screwed onto the rod 55. The spring 62 therefore bears on the bottom 53 and exerts a push on the pusher 63 , that is to say on the rod 55, this thrust being directed towards the front of the chair. The axial position of the endpiece 66 is adjusted so that the latter is flush, by its frustoconical part 57, with the lug 46.

Des moyens de butée sont de préférence prévus pour que, lorsque l'on déplie le fauteuil, celui-ci soit immobilisé dans sa position dépliée (figure 1), et ne risque pas de se replier en sens inverse. Dans cet exemple de réalisation, ces moyens de butée comprennent un tube 64 dont la longueur est égale à la distance entre le coulisseau 22 -quand il est bloqué- et l'extrémité arrière du barreau 15. Ce tube 64 coiffe extérieurement le barreau 15 et empêche donc le coulisseau 22 de glisser davantage vers l'arrière du barreau 15, au-delà de sa position de blocage.Abutment means are preferably provided so that when the chair is unfolded, it is immobilized in its unfolded position (Figure 1), and does not risk folding back in the opposite direction. In this exemplary embodiment, these abutment means comprise a tube 64 whose length is equal to the distance between the slide 22 - when it is blocked - and the rear end of the bar 15. This tube 64 externally covers the bar 15 and Therefore prevents the slide 22 from sliding further towards the rear of the bar 15, beyond its blocking position.

La double chape arrière 17 du barreau 15 comprend une portion tubulaire transversale 66 par laquelle elle est introduite dans le barreau 15.The double rear yoke 17 of the bar 15 comprises a transverse tubular portion 66 by which it is introduced into the bar 15.

Le-tube 64 et la double chape arrière 17 du barreau 15 sont fixés sur celui-ci au moyen d'un boulon 65 traversant transversalement le tube 64, le barreau 15 et la portion tubulaire 66 de la double chape arrière 17.The tube 64 and the double rear clevis 17 of the bar 15 are fixed to the latter by means of a bolt 65 transversely passing through the tube 64, the bar 15 and the tubular portion 66 of the double rear clevis 17.

En utilisation, le fauteuil se trouvant verrouillé en position dépliée (figures 1 et 3), l'utilisateur du fauteuil peut déverrouiller celui-ci en exerçant une simple pression sur le poussoir 63, dirigée vers l'arrière. L'embout 57 (figure 3) repousse alors, par sa partie tronconique 57 puis par sa partie cylindrique. l'ergot 46 à l' intérieur du prolongement tubulaire 40 du coulisseau 22. Dans le même temps, l'utilisateur doit exercer une poussée sur les flancs 1,2 du fauteuil tendant à rapprocher ceux-ci l'un de l'autre. Cette poussée sur les flancs 1, 2 tend à déplacer le coulisseau 22 vers l'avant : l'extrémité arrondie 48 de l'ergot 46 permet à ce dernier de sortir de l'ouverture 42 du barreau 15. Tel que représenté en figure 2, le fauteuil est dans une position de repliement partiel. En fin de repliement du fauteuil, le coutisseau 22 occupe une position 67 représentée en traits mixtes sur la figure 3.In use, the chair being locked in the unfolded position (Figures 1 and 3), the user of the chair can unlock it by exerting a simple pressure on the pusher 63, directed towards the rear. The tip 57 (Figure 3) then pushes back, through its frustoconical part 57 and then through its cylindrical part. the lug 46 inside the tubular extension 40 of the slide 22. At the same time, the user must exert a push on the sides 1,2 of the chair tending to bring them closer to each other. This thrust on the sides 1, 2 tends to move the slide 22 forwards: the rounded end 48 of the lug 46 allows the latter to come out of the opening 42 of the bar 15. As shown in FIG. 2 , the chair is in a partially folded position. At the end of the folding of the chair, the knife 22 occupies a position 67 shown in phantom in FIG. 3.

Pour déplier à nouveau le fauteuil, il suffit à l'utilisateur d'écarter manuellement les deux flances 1,2, ce qui a pour effet de faire coulisser le coulisseau 22 vers sa position arrière de blocage. Dès que le coulisseau 22 bute contre Le tube 64, son ergot 46 se trouve au droit de l'ouverture 42 du barreau 15 et plonge dans le barreau pour bloquer le coulisseau 22.To unfold the chair again, the user just has to manually separate the two flanks 1,2, which has the effect of sliding the slider 22 towards its rear locking position. As soon as the slider 22 abuts against the tube 64, its lug 46 is located at the right of the opening 42 of the bar 15 and plunges into the bar to block the slider 22.

On notera que les moyens de blocage du coulisseau sont tels qu'il n'est pas nécessaire de les réarmer après avoir procédé au déblocage : une simple poussée pour écarter les deux flancs 1,2 du fauteuil provoque un nouveau blocage.Note that the slide blocking means are such that it is not necessary to reset them after having unlocked: a simple push to move the two flanks 1,2 of the chair apart causes a new blocking.

Par ailleurs, il y a lieu de constater que la tige 55 (figure 3) pourrait, dans une variante de réalisation non représentée, être commandée depuis l'arrière du fauteuil, et ce, grâce à la symétrie des moyens de blocage par rapport à un plan perpendiculaire au barreau 15 et passant par l'ergot 46. Il suffirait de retourner l'ensemble des moyens de déblocage de l'avant vers l'arrière, la tige s'étendant dans le barreau à partir de son éxtré- mité arrière et le déblocage du cculisseau étant provoqué par une poussée sur le poussoir, dirigée vers l'avant.Furthermore, it should be noted that the rod 55 (FIG. 3) could, in a variant embodiment not shown, be controlled from the rear of the chair, and this, thanks to the symmetry of the locking means with respect to a plane perpendicular to the bar 15 and passing through the lug 46. It would suffice to turn all of the release means from the front to the rear, the rod extending into the bar from its rear end and the unblocking of the piston being caused by a push on the pusher, directed forwards.

Naturellement, l'invention n'est pas limitée à un fauteuil dans Lequel la tige 55 de déblocage du coulisseau est située dans le barreau 15 ; elle concerne aussi toutes variantes dans lesquelles la tige 55 est montée mobile sur le fauteuil 1 d'une manière différente, cette tige pouvant dans tous les cas être amenée dans une position de coopération avec des moyens de déblocage du coulisseau.Naturally, the invention is not limited to an armchair in which the rod 55 for unlocking the slide is located in the bar 15; it also relates to all variants in which the rod 55 is mounted movably on the chair 1 in a different manner, this rod can in any case be brought into a position of cooperation with means for releasing the slide.

Claims (7)

1.- Fauteuil pliable comprenant des moyens de maintien (9, 10) du fauteuil en position dépliée, qui sont pliables, des moyens de verrouillage en position dépliée de ces moyens de maintien, qui comprennent un barreau (15), un coulisseau (22) monté à coulissement sur ledit barreau et attelé auxdits moyens de maintien (9, 10) de façon à empêcher le repliement de ces moyens de maintien lorsqu'il occupe une position extrême le long du barreau (15), et à autoriser ce repliement lorsqu'il quitte cette position extrême et coulisse le long du barreau, des moyens de blocage (46) dudit coulisseau dans ladite position extrême, et des moyens de déblocage correspondants, caractérisé par le fait que lesdits moyens de déblocage comprennent une tige (55) montée mobile sur le fauteuil de façon à pouvoir être amenée dans une position de coopération avec lesdits moyens de blocage (46) pour débloquer ledit coulisseau (22);1.- Foldable chair comprising means for holding (9, 10) of the chair in the unfolded position, which are foldable, means for locking in the unfolded position of these support means, which comprise a bar (15), a slide (22 ) slidably mounted on said bar and coupled to said holding means (9, 10) so as to prevent the folding of these holding means when it occupies an extreme position along the bar (15), and to authorize this folding when '' he leaves this extreme position and slides along the bar, locking means (46) of said slide in said extreme position, and corresponding unlocking means, characterized in that said unlocking means comprise a rod (55) mounted movable on the chair so as to be able to be brought into a position of cooperation with said blocking means (46) to unlock said slide (22); 2.- Fauteuil selon la revendication 1, caractérisé par le fait que ledit barreau (15) est cr.eux, ladite tige (55) étant disposée à l'intérieur du barreau de façon à pouvoir coulisser longitudinalement.2.- armchair according to claim 1, characterized in that said bar (15) is cr.eux, said rod (55) being disposed inside the bar so as to be able to slide longitudinally. 3.- Fauteuil selon la revendication 2, caractérisé en ce que lesdits moyens de blocage du coulisseau comprennent un ergot effaçable (46) porté par le coulisseau et pouvant faire saillie à l'intérieur du barreau (15) au travers d'une ouverture disposée au droit de ladite position extrême du coulisseau, la tige (55) présentant une extrémité agencée pour repousser ledit ergot hors du barreau lorsqu'elle est déplacée le long du barreau.3.- armchair according to claim 2, characterized in that said slide blocking means comprise an erasable lug (46) carried by the slide and being able to project inside the bar (15) through an opening arranged in line with said extreme position of the slide, the rod (55) having one end arranged to push said lug out of the bar when it is moved along the bar. 4.- Fauteuil selon la revendication 2 ou la revendication 3, caractérisé en ce que ladite tige (55) est rappelée élastiquement dans une direction opposée auxdits moyens de blocage (46) du coulisseau (22) et se prolonge. à son extrémité opposée auxdits moyens de blcocage, à l'ex- téricur du barreau par un poussoir (63).4.- armchair according to claim 2 or claim 3, characterized in that said rod (55) is resiliently biased in a direction opposite to said locking means (46) of the slide (22) and extends. at its end opposite to said blocking means, outside the bar by a pusher (63). 5. Fauteuil selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend deux flancs (1, 2), lesdits moyens de maintien du fauteuil en position dépliée comprennent deux éléments de liaison (9, 10) distants l'un de l'autre par lesquels lesdits flancs sont reliés entre e.ux, chaque élément de liaison (9, 10) comprenant deux portions (11, 12 et 13, 14) articulées l'une par rapport à l'autre à une première extrémité commune (16, 17), chaque portion étant par ailleurs reliée de façon articulée sur l'un desdits flancs (1, 2) par son autre extrémité, ledit barreau (15) s'étendant entre lesdits éléments de liaison (9, 10) et étant relié de façon articulée auxdites- extrémités communes (16, 17) des portions susdites, ledit coulisseau (22) étant attelé à l'un desdits éléments de liaison (10) au moyen de deux éléments d'attelage (34, 35) qui sont articulés chacun par une extrémité sur ledit coulisseau (22) et par une autre extrémité à l'un des points d'articulation dudit élément de liaison (10) sur les. flancs du fauteuil (1, 2).5. Armchair according to any one of the reven dications preceding, characterized in that it comprises two sides (1, 2), said means for holding the chair in the unfolded position comprise two connecting elements (9, 10) distant from each other by which said sides are connected together, each connecting element (9, 10) comprising two portions (11, 12 and 13, 14) articulated relative to each other at a first common end (16, 17), each portion being also hingedly connected to one of said sides (1, 2) by its other end, said bar (15) extending between said connecting elements (9, 10) and being hingedly connected to said ends common (16, 17) of the aforesaid portions, said slide (22) being coupled to one of said connecting elements (10) by means of two coupling elements (34, 35) which are each articulated by one end on said slide (22) and by another end to one of the points of articulation of said connecting element (10) on them. sides of the chair (1, 2). 6.- Fauteuil selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit barreau6.- armchair according to any one of the preceding claims, characterized in that said bar (15) s'étend longitudinalement par rapport au fauteuil, l'extrémité (61) de ladite tige opposée auxdits moyens de blocage (46) étant tournée vers l'avant du fauteuil.(15) extends longitudinally relative to the chair, the end (61) of said rod opposite to said locking means (46) facing the front of the chair.
EP86400968A 1985-05-06 1986-05-05 Collapsible wheel chair with means for quick unbolting Expired - Lifetime EP0201423B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86400968T ATE56613T1 (en) 1985-05-06 1986-05-05 FOLDABLE WHEELCHAIR WITH QUICK RELEASE MEANS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8506842A FR2581299B1 (en) 1985-05-06 1985-05-06 DEVICE FOR LOCKING AND UNLOCKING A FOLDABLE ARMCHAIR, IN PARTICULAR A ARMCHAIR FOR THE DISABLED
FR8506842 1985-05-06

Publications (2)

Publication Number Publication Date
EP0201423A1 true EP0201423A1 (en) 1986-11-12
EP0201423B1 EP0201423B1 (en) 1990-09-19

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EP86400968A Expired - Lifetime EP0201423B1 (en) 1985-05-06 1986-05-05 Collapsible wheel chair with means for quick unbolting

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US (1) US4712830A (en)
EP (1) EP0201423B1 (en)
JP (1) JPS6257522A (en)
AT (1) ATE56613T1 (en)
DE (1) DE3674241D1 (en)
FR (1) FR2581299B1 (en)

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US6572133B1 (en) * 2001-01-18 2003-06-03 Sunrise Medical Hhg, Inc. Folding mechanism for a wheelchair
CN107137185A (en) * 2017-05-31 2017-09-08 常州高尔登科技有限公司 Folding wheel chair and its locking device

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EP0201423B1 (en) 1990-09-19
FR2581299B1 (en) 1988-07-15
FR2581299A1 (en) 1986-11-07
JPS6257522A (en) 1987-03-13
DE3674241D1 (en) 1990-10-25
US4712830A (en) 1987-12-15
ATE56613T1 (en) 1990-10-15

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