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EP0077280A1 - Lifting chair - Google Patents

Lifting chair Download PDF

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Publication number
EP0077280A1
EP0077280A1 EP82420138A EP82420138A EP0077280A1 EP 0077280 A1 EP0077280 A1 EP 0077280A1 EP 82420138 A EP82420138 A EP 82420138A EP 82420138 A EP82420138 A EP 82420138A EP 0077280 A1 EP0077280 A1 EP 0077280A1
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EP
European Patent Office
Prior art keywords
shell
axis
links
rods
articulation
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
EP82420138A
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German (de)
French (fr)
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EP0077280B1 (en
Inventor
Michel Fayolle
Marie-Claude Kastler
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Individual
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Individual
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Publication date
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Publication of EP0077280A1 publication Critical patent/EP0077280A1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/14—Standing-up or sitting-down aids

Definitions

  • the present invention relates to a lift chair, providing elderly or disabled people with assistance for the transition from the sitting position to the standing position, therefore for lifting, as well as for the reverse transition from the standing position to the sitting position. .
  • This chair allows such people to get up or sit down without the help of a third person and without physical effort.
  • the present invention seeks to remedy these drawbacks by providing a lifting chair of the "monocoque" type which is of simple and light construction, while having a particularly suitable movement and allowing possible adjustments as a function of the size of the user and / or desired seating position.
  • the subject of the invention is essentially a lifting chair comprising a base, an ascent-descent mechanism and a shell composed of a seat, a backrest and two armrests joined together in a monobloc assembly, an armchair in which the ascent-descent mechanism comprises two pairs of parallel lateral links, of very unequal lengths, which each connect the base to the shell so as to form a deformable quadrilateral, the two shorter links having their axis of articulation on the base located higher than the articulation axis of the two longer rods on the base, and behind this latter axis, while a motorized extendable device is articulated, on the one hand, with the following base a transverse axis and, on the other hand, to the shell along an axis coincident with the axis of articulation of the rods of shorter length to said shell.
  • the lifting chair object of the present invention and in particular the lifting mechanism of this chair which is reduced practically to four links, retain a very simplified structure.
  • the uneven length of the rods gives a remarkable movement during the climb: the chair shell rises first, remaining roughly parallel to itself, and only then does this shell tilt towards the before, while continuing its movement of elevation.
  • the two shorter rods are articulated at points located near the anterior edge of vertical lateral elements integral with the shell, while the two longer rods are articulated in points located near the rear edge of said elements, the latter comprising a series of holes which allow an adjustment in height of the points of articulation of the two pairs of rods.
  • the two pairs of rods are, for example, articulated on side legs, folded down, which belong to a plate fixed under the seat of the hull.
  • the series of holes provided in the latter case along the anterior and posterior edges of each lateral tab of the plate, allow an initial adjustment of the height relative to the ground of the shell, as well as of the inclination of the seat. with respect to the horizontal.
  • the two links of each pair are integral with the same transverse tube, mounted pivoting along its axis between the two lateral parts of the base, the two smallest links length also being interconnected by a cross member carrying in its middle a yoke to which is articulated, along an axis passing through the points of articulation of these rods on the shell, the upper end of a threaded rod moved axially by means a rotary nut coupled to an electric geared motor, the threaded rod being partially housed inside a housing secured to the geared motor and articulated to the base along a transverse axis.
  • the armchair shown in the drawing comprises a metal base (1), connected by two pairs of links, respectively (2 and 3), to a shell (4).
  • the base (1) has, on each side, a front upright (5) and a rear upright (6), interconnected by a right upper element (7) as well as by a bent lower bar (8).
  • the two bars (8) are connected to each other by two transverse elements (9), which with the middle parts of these bars (8) define a small rectangular central frame (10).
  • the shell (4) consists of a seat (11), a backrest (12) and two armrests (13), joined together as a single unit. Under the seat (11) is fixed a plate (14), the side parts of which are folded so as to form two vertical legs (15) facing downwards.
  • the two links (2) of the first pair are integral with the same transverse tube (16), pivotally mounted along its axis between the front parts of the two upper elements (7) of the base (1). These two links (2) are also interconnected at intermediate points. res of their length, by a crosspiece (17), while their ends remote from the tube (16) are articulated, at points (18), near the front edges of the two lateral tabs (15) of the plate (14).
  • the crosspiece (17) carries two ears (19), constituting a yoke whose axis (20) passes through the points of articulation (18) of the rods (2) on the lateral legs (15) of the plate (14).
  • the two links (3) of the second pair are also integral with the same transverse tube (21), pivotally mounted along its axis between the upper parts of the two front uprights (5) of the base (1).
  • the ends of these links (3) remote from the tube (21) are articulated, at points (22), near the rear edges of the two lateral tabs (15) of the plate (14).
  • the links (3) of the second pair have a length greater than twice that of the links (2) of the first pair.
  • the length of the links (2) (measured between the two articulation axes) is 12.5 cm
  • the length of the links (3) (measured between the two articulation axes) is 31.5 cm, which corresponds to a length ratio very close to 2/5.
  • the axis of articulation of the connecting rods (2) of shorter length on the base (1) is located above and behind the axis of articulation rods (3) of greater length on the base (1).
  • the axis of the tube (16) is located 8.5 cm higher than the axis of the tube (21), and 5 cm in back of the latter.
  • the central frame (10) of the base (1) is crossed by a housing (23) integral with an electric geared motor (24), which rotates a nut (not shown) cooperating with a threaded rod (25) of which the part outside the housing (23) is directed upwards.
  • the housing is linked to the two bars (8) by articulation along a transverse axis (26); the upper end of the threaded rod (25) is articulated to the yoke (19) along the axis (20).
  • Figures 1 to 4 make it possible to decompose the movement which brings the shell (4) from its lowest position to its highest position, this movement being controlled by the actuation of the gear motor (24) in the direction causing the lifting of the threaded rod (25) relative to the housing (23).
  • Each lateral tab (15) of the plate (14) has, along its front and rear edges, series of holes respectively (27 and 28), making it possible to position the articulation points (18 and 22) in various ways rods (2 and 3), to adjust the height and the inclination of the shell (4) in the low position.
  • the manual control of the gear motor (24) will advantageously be placed on one of the armrests (13) of the shell (4).

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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)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)

Abstract

1. A lifting chair of the "integral shell" type, including a stand (1), a lifting-lowering mechanism and a shell (4) comprising a seat (11), a back (12) and two arm-rests (13) combined in a one-piece assembly, the lifting-lowering mechanism including two parallel and identical articulation systems disposed on the two opposite sides of the chair, each comprising two links (2, 3) of unequal lengths, each of which connects the stand (1) to the shell (4) in such a way that each system forms a deformable quadrilateral, the two shorter links (2) having their articulation axis (16) on the stand (1) located higher than the articulation axis (21) on the stand (1) of the two longer links (3), whilst a motorised extending device (23 to 25) is articulated, on the one hand, on the stand (1) about a transverse axis (26), and, on the other hand, on the shell (4) about an axis parallel to the articulation axis on said shell of the shorter links (2), characterised in that the articulation axis (16) on the stand (1) of the two shorter links (2) is furthermore disposed at the rear of the articulation axis (21) on the stand (1) of the two longer links (3), and in that the articulation axis (20) between the motorised extending device (23 to 25) and the shell (4) moreover merges with the articulation axis of the shorter links (2) on said shell (4).

Description

La présente invention se rapporte à un fauteuil élévateur, procurant à des personnes âgées ou handicapées une assistance pour le passage de la position assise à la position debout, donc pour le levage, ainsi que pour le passage inverse de la position debout à la position assise. Ce fauteuil permet ainsi à de telles personnes de se lever ou de s'asseoir sans l'aide d'une tierce personne et sans effort physique.The present invention relates to a lift chair, providing elderly or disabled people with assistance for the transition from the sitting position to the standing position, therefore for lifting, as well as for the reverse transition from the standing position to the sitting position. . This chair allows such people to get up or sit down without the help of a third person and without physical effort.

On a déjà créé, dans ce but, des fauteuils munis d'un mécanisme de montée et descente actionné à partir d'un moteur. Dans le cas de certains de ces fauteuils élévateurs, le mécanisme en question déplace uniquement l'assise ; les accoudoirs ne suivant pas le mouvement d'élévation de l'assise, il existe un risque de perte d'équilibre pour la personne utilisatrice du fauteuil. On connaît aussi des fauteuils élévateurs d'un autre type dit "monocoque", dans lesquels l'assise, le dossier et les accoudoirs se trouvent solidarisés, dont sont levés et abaissés simultanément; les réalisations actuelles appartenant à ce type restent toutefois lourdes, et elles possèdent des mécanismes de montée-descente particulièrement complexes. De plus, ces fauteuils ont un mouvement peu adapté, l'assise décrivant souvent un simple basculement qui est insuffisant pour assurer une assistance correcte à une personne handicapée désirant passer de la position assise à la position debout.We have already created, for this purpose, armchairs provided with an up and down mechanism actuated from a motor. In the case of some of these lift chairs, the mechanism in question only displaces the seat; since the armrests do not follow the elevation movement of the seat, there is a risk of loss of balance for the person using the wheelchair. There are also known lift chairs of another type called "monocoque", in which the seat, the backrest and the armrests are joined, from which are raised and lowered simultaneously; current constructions belonging to this type remain heavy, however, and they have particularly complex ascent-descent mechanisms. In addition, these chairs have an unsuitable movement, the seat often describing a simple tilting which is insufficient to provide correct assistance to a disabled person wishing to move from the sitting position to the standing position.

La présente invention vise à remédier à ces inconvénients, en fournissant un fauteuil élévateur de type "monocoque" qui soit de construction simple et légère, tout en ayant un mouvement particulièrement adapté et en permettant d'éventuels réglages en fonction de la taille de l'utilisateur et/ou de la position assise souhaitée.The present invention seeks to remedy these drawbacks by providing a lifting chair of the "monocoque" type which is of simple and light construction, while having a particularly suitable movement and allowing possible adjustments as a function of the size of the user and / or desired seating position.

A cet effet, l'invention a essentiellement pour objet un fauteuil élévateur comprenant un piètement, un mécanisme de montée-descente et une coque composée d'une assise, d'un dossier et de deux accoudoirs réunis en un ensemble monobloc, fauteuil dans lequel le mécanisme de montée-descente comprend deux paires de biellettes latérales parallèles, de longueurs très inégales, qui relient chacune le piètement à la coque de manière à former un quadrilatère déformable, les deux biellettes de plus petite longueur ayant leur axe d'articulation sur le piètement situé plus haut que l'axe d'articulation des deux biellettes de plus grande longueur sur le piètement, et en arrière de ce dernier axe, tandis qu'un dispositif extensible motorisé est articulé, d'une part, au piètement suivant un axe transversal et, d'autre part, à la coque suivant un axe confondu avec l'axe d'articulation des biellettes de plus petite longueur à ladite coque.To this end, the subject of the invention is essentially a lifting chair comprising a base, an ascent-descent mechanism and a shell composed of a seat, a backrest and two armrests joined together in a monobloc assembly, an armchair in which the ascent-descent mechanism comprises two pairs of parallel lateral links, of very unequal lengths, which each connect the base to the shell so as to form a deformable quadrilateral, the two shorter links having their axis of articulation on the base located higher than the articulation axis of the two longer rods on the base, and behind this latter axis, while a motorized extendable device is articulated, on the one hand, with the following base a transverse axis and, on the other hand, to the shell along an axis coincident with the axis of articulation of the rods of shorter length to said shell.

Ainsi, le fauteuil élévateur objet de la présente invention, et en particulier le mécanisme de levée de ce fauteuil qui est réduit pratiquement à quatre biellettes, conservent une structure très simplifiée. De plus, la longueur inégale des biellettes donne, à la montée, un mouvement remarquable : la coque du fauteuil se lève d'abord en restant à peu près parallèle à elle-même, et c'est ensuite seulement que cette coque bascule vers l'avant, tout en poursuivant son mouvement d'élévation. On obtient ainsi, au début de la montée, un décollement des talons de l'utilisateur, qui reproduit l'attitude "naturelle" d'une personne se levant d'un fauteuil ordinaire (en s'appuyant sur les accoudoirs pour alléger ses talons). Ce mouvement peut être notamment assuré grâce à des biellettes dont les deux plus courtes ont une longueur inférieure à la moitié de celle des deux biellettes les plus longues, et plus particulèrement encore en prévoyant que le rapport entre les longueurs des biellettes est environ égal à 2/5. Par ailleurs, la simplicité du mécanisme de levée a pour conséquence la légéreté de l'ensemble du fauteuil, permettant son déplacement aisé par l'utilisateur ou par une personne de son entourage.Thus, the lifting chair object of the present invention, and in particular the lifting mechanism of this chair which is reduced practically to four links, retain a very simplified structure. In addition, the uneven length of the rods gives a remarkable movement during the climb: the chair shell rises first, remaining roughly parallel to itself, and only then does this shell tilt towards the before, while continuing its movement of elevation. We thus obtain, at the beginning of the ascent, a detachment of the heels of the user, which reproduces the "natural" attitude of a person getting up from an ordinary armchair (by leaning on the armrests to lighten his heels ). This movement can be ensured in particular by means of rods, the two shortest of which have a length less than half that of the two longest rods, and more particularly still by providing that the ratio between the lengths of the rods is approximately equal to 2 / 5. Furthermore, the simplicity of the lifting mechanism results in the lightness of the entire chair, allowing it to be moved easily by the user or by someone around him.

Suivant une forme de réalisation préférée de l'invention, les deux biellettes de plus petite longueur sont articulées en des points situés près du bord antérieur d'éléments latéraux verticaux solidaires de la coque, tandis que les deux biellettes de plus grande longueur sont articulées en des points situés près du bord postérieur desdits éléments, ces derniers comportant des séries de trous qui permettent un réglage en hauteur des points d'articulation des deux paires de biellettes. Les deux paires de biellettes sont, par exemple, articulées sur des pattes latérales, pliées vers le bas, qui appartiennent à une platine fixée sous l'assise de la coque. Les séries de trous, prévues dans ce dernier cas le long des bords antérieur et postérieur de chaque patte latérale de la platine, permettent un réglage initial de la hauteur par rapport au sol de la coque, ainsi que de l'inclinaison de l'assise par rapport à l'horizontale.According to a preferred embodiment of the invention, the two shorter rods are articulated at points located near the anterior edge of vertical lateral elements integral with the shell, while the two longer rods are articulated in points located near the rear edge of said elements, the latter comprising a series of holes which allow an adjustment in height of the points of articulation of the two pairs of rods. The two pairs of rods are, for example, articulated on side legs, folded down, which belong to a plate fixed under the seat of the hull. The series of holes, provided in the latter case along the anterior and posterior edges of each lateral tab of the plate, allow an initial adjustment of the height relative to the ground of the shell, as well as of the inclination of the seat. with respect to the horizontal.

Suivant un mode de construction particulier du fauteuil élévateur objet de l'invention, les deux biellettes de chaque paire sont solidaires d'un même tube transversal, monté pivotant suivant son axe entre les deux parties latérales du piètement, les deux biellettes de plus petite longueur étant également reliées entre elles par une traverse portant en son milieu une chape à laquelle est articulée, suivant un axe passant par les points d'articulation de ces biellettes sur la coque, l'extrémité supérieure d'une tige filetée déplacée axialement au moyen d'un écrou rotatif accouplé à un moto-réducteur électrique, la tige filetée se logeant partiellement à l'intérieur d'un boîtier solidaire du moto-réducteur et articulé au piètement suivant un axe transversal.According to a particular construction method of the lifting chair object of the invention, the two links of each pair are integral with the same transverse tube, mounted pivoting along its axis between the two lateral parts of the base, the two smallest links length also being interconnected by a cross member carrying in its middle a yoke to which is articulated, along an axis passing through the points of articulation of these rods on the shell, the upper end of a threaded rod moved axially by means a rotary nut coupled to an electric geared motor, the threaded rod being partially housed inside a housing secured to the geared motor and articulated to the base along a transverse axis.

L'invention sera mieux comprise à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemple, une forme de réalisation de ce fauteuil élévateur :

  • Figure 1 est une vue en coupe longitudinale d'un fauteuil élévateur conforme à la présente invention, en position basse ;
  • Figures 2 et 3 sont des vues similaires à figure l, montrant ce fauteuil dans deux positions intermédiaires au cours de son mouvement de montée ;
  • Figure 4 est une vue similaire aux précédentes, représentant le même fauteuil levé au maximum ;
  • Figure 5 est une vue partielle en perspective du fauteuil selon les figures 1 à 4, montrant le détail de son piètement et de ses biellettes, toute la coque étant supposée enlevée.
The invention will be better understood with the aid of the description which follows, with reference to the appended diagrammatic drawing representing, by way of example, an embodiment of this lifting chair:
  • Figure 1 is a longitudinal sectional view of a lifting chair according to the present invention, in the low position;
  • Figures 2 and 3 are views similar to Figure l, showing this chair in two intermediate positions during its upward movement;
  • Figure 4 is a view similar to the previous, showing the same chair lifted to the maximum;
  • Figure 5 is a partial perspective view of the chair according to Figures 1 to 4, showing the detail of its base and its links, the entire shell being assumed removed.

Le fauteuil représenté au dessin comprend un piètement métallique (1), relié par deux paires de biellettes, respectivement (2 et 3), à une coque (4).The armchair shown in the drawing comprises a metal base (1), connected by two pairs of links, respectively (2 and 3), to a shell (4).

Le piètement (1) possède, de chaque côté, un montant avant (5) et un montant arrière (6), reliés entre eux par un élément supérieur droit (7) ainsi que par une barre inférieure coudée (8). Les deux barres (8) sont reliées l'une à l'autre par deux éléments transversaux (9), qui avec les parties médianes de ces barres (8) délimitent un petit cadre central rectangulaire (10).The base (1) has, on each side, a front upright (5) and a rear upright (6), interconnected by a right upper element (7) as well as by a bent lower bar (8). The two bars (8) are connected to each other by two transverse elements (9), which with the middle parts of these bars (8) define a small rectangular central frame (10).

La coque (4) se compose d'une assise (11), d'un dossier (12) et de deux accoudoirs (13), réunis en un ensemble monobloc. Sous l'assise (11) est fixée une platine (14), dont les parties latérales sont pliées de manière à constituer deux pattes verticales (15) tournées vers le bas.The shell (4) consists of a seat (11), a backrest (12) and two armrests (13), joined together as a single unit. Under the seat (11) is fixed a plate (14), the side parts of which are folded so as to form two vertical legs (15) facing downwards.

Les deux biellettes (2) de la première paire sont solidaires d'un même tube transversal (16), monté pivotant suivant son axe entre les parties avant des deux éléments supérieurs (7) du piètement (1). Ces deux biellettes (2) sont aussi reliées entre elles en des points intermédiaires de leur longueur, par une traverse (17), tandis que leurs extrémités éloignées du tube (16) sont articulées, en des points (18), près des bords antérieurs des deux pattes latérales (15) de la platine (14).The two links (2) of the first pair are integral with the same transverse tube (16), pivotally mounted along its axis between the front parts of the two upper elements (7) of the base (1). These two links (2) are also interconnected at intermediate points. res of their length, by a crosspiece (17), while their ends remote from the tube (16) are articulated, at points (18), near the front edges of the two lateral tabs (15) of the plate (14).

Dans sa partie centrale, la traverse (17) porte deux oreilles (19), constituant une chape dont l'axe (20) passe par les points d'articulation (18) des biellettes (2) sur les pattes latérales (15) de la platine (14).In its central part, the crosspiece (17) carries two ears (19), constituting a yoke whose axis (20) passes through the points of articulation (18) of the rods (2) on the lateral legs (15) of the plate (14).

Les deux biellettes (3) de la seconde paire sont elles aussi solidaires d'un même tube transversal (21), monté pivotant suivant son axe entre les parties supérieures des deux montants avant (5) du piètement (1). Les extrémités de ces biellettes (3) éloignées du tube (21) sont articulées, en des points (22), près des bords postérieurs des deux pattes latérales (15) de la platine (14).The two links (3) of the second pair are also integral with the same transverse tube (21), pivotally mounted along its axis between the upper parts of the two front uprights (5) of the base (1). The ends of these links (3) remote from the tube (21) are articulated, at points (22), near the rear edges of the two lateral tabs (15) of the plate (14).

Les biellettes (3) de la seconde paire ont une longueur supérieure au double de celle des biellettes (2) de la première paire. Par exemple, la longueur des biellettes (2) (mesuréeentre les deux axes d'articulation) est de 12,5 cm, tandis que la longueur des biellettes (3) (mesurée entre les deux axes d'articulation) est de 31,5 cm, ce qui correspond à un rapport de longueur très proche de 2/5. On notera aussi que, suivant une disposition fondamentale de la présente invention, l'axe d'articulation des biellettes (2) de plus petite longueur sur le piètement (1) est situé au-dessus et en arrière de l'axe d'articulation des biellettes (3) de plus grande longueur sur le piètement (1). Par exemple, avec des biellettes (2 et 3) ayant les longueurs indiquées ci-dessus, l'axe du tube (16) est situé 8,5 cm plus haut que l'axe du tube (21), et à 5 cm en arrière de ce dernier.The links (3) of the second pair have a length greater than twice that of the links (2) of the first pair. For example, the length of the links (2) (measured between the two articulation axes) is 12.5 cm, while the length of the links (3) (measured between the two articulation axes) is 31.5 cm, which corresponds to a length ratio very close to 2/5. It will also be noted that, according to a fundamental arrangement of the present invention, the axis of articulation of the connecting rods (2) of shorter length on the base (1) is located above and behind the axis of articulation rods (3) of greater length on the base (1). For example, with rods (2 and 3) having the lengths indicated above, the axis of the tube (16) is located 8.5 cm higher than the axis of the tube (21), and 5 cm in back of the latter.

Le cadre central (10) du piètement (1) est traversé par un boîtier (23) solidaire d'un moto-réducteur électrique (24), lequel entraîne en rotation un écrou (non représenté) coopérant avec une tige filetée (25) dont la partie extérieure au boîtier (23) est dirigée vers le haut. Le boîtier est lié aux deux barres (8) par articulation suivant un axe transversal (26) ; l'extrémité supérieure de la tige filetée (25) est articulée à la chape (19) suivant l'axe (20).The central frame (10) of the base (1) is crossed by a housing (23) integral with an electric geared motor (24), which rotates a nut (not shown) cooperating with a threaded rod (25) of which the part outside the housing (23) is directed upwards. The housing is linked to the two bars (8) by articulation along a transverse axis (26); the upper end of the threaded rod (25) is articulated to the yoke (19) along the axis (20).

Les figures 1 à 4 permettent de bien décomposer le mouvement qui amène la coque (4) de sa position la plus basse à sa position la plus haute, ce mouvement étant commandé par la mise en action du moto-réducteur (24) dans le sens provoquant la levée de la tige filetée (25) relativement au boîtier (23).Figures 1 to 4 make it possible to decompose the movement which brings the shell (4) from its lowest position to its highest position, this movement being controlled by the actuation of the gear motor (24) in the direction causing the lifting of the threaded rod (25) relative to the housing (23).

En partant de la position basse représentée à la figure 1, on notera que la coque (4) est tout d'abord levée en restant pratiquement parallèle à elle-même, autrement dit l'assise (11) reste, dans un premier temps, sensiblement horizontale comme le montre la figure 2, de manière à provoquer un décollement du sol des talons de la personne assise sur le fauteuil. Ceci est dû à la longueur très inégale des deux paires de biellettes (2 et 3), donc au fait que les points d'articulation (18 et 22) décrivent des arcs de cercle de rayons très différents, ayant en outre leurs centres décalés verticalement et aussi dans la direction avant-arrière.Starting from the low position shown in FIG. 1, it will be noted that the shell (4) is firstly lifted while remaining practically parallel to itself, in other words the seat (11) remains, at first, substantially horizontal as shown in Figure 2, so as to cause detachment of the ground from the heels of the person seated on the chair. This is due to the very unequal length of the two pairs of rods (2 and 3), therefore to the fact that the points of articulation (18 and 22) describe arcs of a circle of very different radii, moreover having their centers offset vertically and also in the front-back direction.

La sortie de la tige filetée (25) se poursuivant, la coque (4) amorce un mouvement plus accentué de basculement vers l'avant, tout en poursuivant son mouvement d'élévation, comme le montre la figure 3. La forte différence de longueur des biellettes (2 et 3) limite en effet, à partir d'un certain instant, le déplacement vertical des points d'articulation antérieurs (18), alors que les points d'articulation postérieurs (22) peuvent encore s'élever de façon sensible. Ce mouvement combiné de basculement et de soulèvement se poursuit jusqu'à ce que soit atteinte une position extrême représentée à la figure 4. Le boîtier (23) renferme les contacts de fin de course qui provoquent la remise à l'arrêt du moto-réducteur (24) dans cette position la plus haute, ainsi que dans la position la plus basse lorsque le fauteuil a décrit le mouvement inverse de descente, en repassant évidemment par les mêmes positions intermédiaires.The exit of the threaded rod (25) continuing, the shell (4) initiates a more accentuated tilting movement forward, while continuing its elevation movement, as shown in Figure 3. The large difference in length rods (2 and 3) in fact limit, from a certain moment, the vertical displacement of the anterior articulation points (18), while the posterior articulation points (22) can still rise so sensitive. This combined tilting and lifting movement continues until an extreme position shown in FIG. 4 is reached. The housing (23) contains the limit switch contacts which cause the gearmotor to come to a standstill. (24) in this highest position, as well as in the lowest position when the chair has described the reverse downward movement, obviously going back through the same intermediate positions.

Chaque patte latérale (15) de la platine (14) présente, le long de ses bords antérieur et postérieur, des séries de trous respectivement (27 et 28), permettant de positionner de diverses façons les points d'articulation (18 et 22) des biellettes (2 et 3), pour régler la hauteur et l'inclinaison de la coque (4) dans la position basse.Each lateral tab (15) of the plate (14) has, along its front and rear edges, series of holes respectively (27 and 28), making it possible to position the articulation points (18 and 22) in various ways rods (2 and 3), to adjust the height and the inclination of the shell (4) in the low position.

La commande manuelle du moto-réducteur (24) sera avantageusement placée sur l'un des accoudoirs (13) de la coque (4).The manual control of the gear motor (24) will advantageously be placed on one of the armrests (13) of the shell (4).

Comme il va de soi, l'invention ne se limite pas à la seule forme de réalisation de ce fauteuil élévateur qui a été décrite ci-dessus, à titre d'exemple ; elle en embrasse, au contraire, toutes les variantes conçues selon le même principe.It goes without saying that the invention is not limited to the only embodiment of this lift chair which has been described above, by way of example; on the contrary, it embraces all the variants conceived on the same principle.

Ainsi, l'on ne s'éloignerait pas du cadre de l'invention en remplaçant le moto-réducteur (24) qui actionne la tige filetée (25) par tout dispositif extensible motorisé équivalent, tel que vérin hydraulique ou d'un autre type, ou encore en modifiant les détails constructifs du piètement (1).Thus, one would not depart from the scope of the invention by replacing the gear motor (24) which actuates the threaded rod (25) by any equivalent motorized extendable device, such as a hydraulic cylinder or of another type , or by modifying the constructive details of the base (1).

Claims (6)

1. Fauteuil élévateur de type "monocoque", comprenant un piètement (1), un mécanisme de montée-descente et une coque (4) composée d'une assise (11), d'un dossier (12) et de deux accoudoirs (13) réunis en un ensemble monobloc, caractérisé en ce que le mécanisme de montée-descente comprend deux paires de biellettes latérales parallèles (2,3) de longueurs très inégales, qui relient chacune le piètement (1) à la coque (4) de manière à former un quadrilatère déformable, les deux biellettes de plus petite longueur (2) ayant leur axe d'articulation (16) sur le piètement (1) situé plus haut que l'axe d'articulation (21) des deux biellettes de plus grande longueur (3) sur le piètement (1), et en arrière de ce dernier axe (21), tandis qu'un dispositif extensible motorisé (23 à 25) est articulé, d'une part, au piètement (1) suivant un axe transversal (26) et, d'autre part, à la coque (4) suivant un axe (20) confondu avec l'axe d'articulation des biellettes de plus petite longueur (2) à ladite coque (4).1. "Monocoque" type lift chair, comprising a base (1), an up-down mechanism and a shell (4) composed of a seat (11), a backrest (12) and two armrests ( 13) united in a monobloc assembly, characterized in that the ascent-descent mechanism comprises two pairs of parallel lateral links (2,3) of very unequal lengths, which each connect the base (1) to the shell (4) of so as to form a deformable quadrilateral, the two smaller links (2) having their axis of articulation (16) on the base (1) located higher than the axis of articulation (21) of the two more rods great length (3) on the base (1), and behind this latter axis (21), while an extendable motorized device (23 to 25) is articulated, on the one hand, to the base (1) according to a transverse axis (26) and, on the other hand, to the shell (4) along an axis (20) coincident with the axis of articulation of the rods of shorter length (2) to said cock eu (4). 2. Fauteuil élévateur selon la revendication 1, caractérisé en ce que les deux biellettes les plus courtes (2) ont une longueur inférieure à la moitié de celle des deux biellettes les plus longues (3).2. Lift chair according to claim 1, characterized in that the two shortest links (2) have a length less than half that of the two longest links (3). 3. Fauteuil élévateur selon la revendication 2, caractérisé en ce que le rapport entre les longueurs des biellettes les plus courtes (2) et les plus longues (3) est environ égal à 2/5.3. Lift chair according to claim 2, characterized in that the ratio between the lengths of the shortest links (2) and the longest (3) is approximately equal to 2/5. 4. Fauteuil élévateur selon l'une des revendications 1 à 3, caractérisé en ce que les deux biellettes de plus petite longueur (2) sont articulées en des points (18) situés près du bord antérieur d'éléments latéraux verticaux (15) solidaires de la coque (4), tandis que les deux biellettes de plus grande longueur (3) sont articulées en des points (22) situés près du bord postérieur desdits éléments (15), ces derniers comportant des séries de trous (27,28) qui permettent un réglage en hauteur des points d'articulation (18,22) des deux paires de biellettes (2,3).4. Lift chair according to one of claims 1 to 3, characterized in that the two shorter links (2) are articulated at points (18) located near the anterior edge of vertical lateral elements (15) integral of the shell (4), while the two longer links (3) are articulated at points (22) located near the rear edge of said elements (15), the latter comprising series of holes (27,28) which allow an adjustment in height of the points of articulation (18,22) of the two pairs of rods (2,3). 5. Fauteuil élévateur selon la revendication 4, caractérisé en ce que les deux paires de biellettes (2,3) sont articulées sur des pattes latérales (15), pliées vers le bas, qui appartiennent à une platine (I4) fixée sous l'assise (11) de la coque (4), les séries de trous précitées (27,28) étant prévues le long des bords antérieur et postérieur de chaque patte latérale (15) de ladite platine (14).5. Lift chair according to claim 4, characterized in that the two pairs of rods (2,3) are articulated on lateral legs (15), folded down, which belong to a plate (I4) fixed under the seat (11) of the shell (4), the above-mentioned series of holes (27, 28) being provided along the front and rear edges of each lateral tab (15) of said plate (14). 6. Fauteuil élévateur selon l'une des revendications 1 à 5, caractérisé en ce que les deux biellettes (2,3) de chaque paire sont solidaires d'un même tube transversal (16,21), monté pivotant suivant son axe entre les deux parties latérales (5,6,7) du piètement (1), les deux biellettes de plus petite longueur (2) étant également reliées entre elles par une traverse (17) portant en son milieu une chape (19) à laquelle est articulée, suivant un axe (20) passant par les points d'articulation (18) de ces biellettes (2) sur la coque (4), l'extrémité supérieure d'une tige filetée (25) déplacée axialement au moyen d'un écrou rotatif accouplé à un moto-réducteur électrique (24), la tige filetée (25) se logeant partiellement à l'intérieur d'un boîtier (23) solidaire du moto-réducteur (24) et articulé au piètement (1) suivant un axe transversal (26).6. Lift chair according to one of claims 1 to 5, character laughed in that the two rods (2,3) of each pair are integral with the same transverse tube (16,21), mounted to pivot along its axis between the two lateral parts (5,6,7) of the base (1 ), the two rods of shorter length (2) also being interconnected by a cross member (17) carrying in its middle a yoke (19) to which is articulated, along an axis (20) passing through the points of articulation (18) of these rods (2) on the shell (4), the upper end of a threaded rod (25) moved axially by means of a rotary nut coupled to an electric geared motor (24), the rod threaded (25) being partially housed inside a housing (23) integral with the gear motor (24) and articulated to the base (1) along a transverse axis (26).
EP19820420138 1981-10-01 1982-09-29 Lifting chair Expired EP0077280B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8118827A FR2513876A1 (en) 1981-10-01 1981-10-01 LIFT ARMCHAIR
FR8118827 1981-10-01

Publications (2)

Publication Number Publication Date
EP0077280A1 true EP0077280A1 (en) 1983-04-20
EP0077280B1 EP0077280B1 (en) 1986-05-28

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ID=9262804

Family Applications (1)

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EP19820420138 Expired EP0077280B1 (en) 1981-10-01 1982-09-29 Lifting chair

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EP (1) EP0077280B1 (en)
DE (1) DE3271399D1 (en)
ES (1) ES516118A0 (en)
FR (1) FR2513876A1 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587678A (en) * 1985-02-04 1986-05-13 Love Larry W Toilet seat booster
GB2183150A (en) * 1985-09-26 1987-06-03 Cluney Upholstery Limited Chair
GB2205230A (en) * 1987-04-24 1988-12-07 Cinnamon Limited J Chair
US4852939A (en) * 1987-10-23 1989-08-01 Orthokinetics, Inc. Device for converting a recliner chair to a recliner-lift chair
US4946222A (en) * 1989-01-30 1990-08-07 Triangle Engineering Of Arkansas, Inc. Lift platform for chairs
US4993777A (en) * 1988-05-20 1991-02-19 La-Z-Boy Chair Company Recliner chair lift base assembly
FR2663218A1 (en) * 1990-06-15 1991-12-20 Tanis Motorised chair providing assistance for the vertical movements of the user
WO1992004559A1 (en) * 1990-08-31 1992-03-19 Innovative Medical Engineering, Inc. Improvements in tiltable lift seat devices
WO1994019994A1 (en) * 1993-03-02 1994-09-15 Kenneth Casey Universal lift frame for a chair
US5458349A (en) * 1994-06-30 1995-10-17 Mung-Tung; Wang Multi-function electric wheel-chair
NL1001998C2 (en) * 1995-12-28 1997-07-02 Doge Collection B V Lifting and tilting platform
GB2412847A (en) * 2004-04-07 2005-10-12 Charles Basil Firth Wheelchair with elevating seat
EP1891921A1 (en) * 2006-08-21 2008-02-27 Opruga d.d. Seating furniture with lifting mechanism to assist getting up
WO2008005050A3 (en) * 2006-06-30 2008-10-30 Trust Better Life Corp I Support frame for a lift chair
IT201800010191A1 (en) 2018-11-09 2020-05-09 Valentino Costola EQUIPMENT FOR LIFTING PEOPLE THAT CAN BE ASSOCIATED WITH THE SEAT OF A CHAIR OR ARMCHAIR.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3815435A1 (en) * 1988-05-06 1989-11-16 Dieter Schaller Chair having a seat that can be tilted forwards and upwards about a pivot axis

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB926157A (en) * 1960-06-30 1963-05-15 Frederick Edward Rule Hooper Invalid chairs or the like
US3091426A (en) * 1961-05-08 1963-05-28 Arthur J Klein Adjustable chair
US3138402A (en) * 1961-11-01 1964-06-23 American Metal Prod Invalid chair
DE2716821A1 (en) * 1976-04-16 1977-11-03 Edward J Gaffney LIFTER
CH600834A5 (en) * 1975-10-24 1978-06-30 Truffart Demont Nelly Elevating and tipping chair for aged or infirm

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB926157A (en) * 1960-06-30 1963-05-15 Frederick Edward Rule Hooper Invalid chairs or the like
US3091426A (en) * 1961-05-08 1963-05-28 Arthur J Klein Adjustable chair
US3138402A (en) * 1961-11-01 1964-06-23 American Metal Prod Invalid chair
CH600834A5 (en) * 1975-10-24 1978-06-30 Truffart Demont Nelly Elevating and tipping chair for aged or infirm
DE2716821A1 (en) * 1976-04-16 1977-11-03 Edward J Gaffney LIFTER

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587678A (en) * 1985-02-04 1986-05-13 Love Larry W Toilet seat booster
GB2183150A (en) * 1985-09-26 1987-06-03 Cluney Upholstery Limited Chair
GB2205230A (en) * 1987-04-24 1988-12-07 Cinnamon Limited J Chair
US4838612A (en) * 1987-04-24 1989-06-13 J. Cinnamon Limited Occupant-arising assist chair
GB2205230B (en) * 1987-04-24 1990-06-06 Cinnamon Limited J Chair
US4852939A (en) * 1987-10-23 1989-08-01 Orthokinetics, Inc. Device for converting a recliner chair to a recliner-lift chair
US4993777A (en) * 1988-05-20 1991-02-19 La-Z-Boy Chair Company Recliner chair lift base assembly
US4946222A (en) * 1989-01-30 1990-08-07 Triangle Engineering Of Arkansas, Inc. Lift platform for chairs
FR2663218A1 (en) * 1990-06-15 1991-12-20 Tanis Motorised chair providing assistance for the vertical movements of the user
US5178025A (en) * 1990-08-31 1993-01-12 Innovative Medical Engineering, Inc. Tiltable lift seat devices
WO1992004559A1 (en) * 1990-08-31 1992-03-19 Innovative Medical Engineering, Inc. Improvements in tiltable lift seat devices
WO1994019994A1 (en) * 1993-03-02 1994-09-15 Kenneth Casey Universal lift frame for a chair
US5641201A (en) * 1993-03-02 1997-06-24 American Dream International Universal lift frame for a chair
US5458349A (en) * 1994-06-30 1995-10-17 Mung-Tung; Wang Multi-function electric wheel-chair
NL1001998C2 (en) * 1995-12-28 1997-07-02 Doge Collection B V Lifting and tilting platform
GB2412847A (en) * 2004-04-07 2005-10-12 Charles Basil Firth Wheelchair with elevating seat
GB2412847B (en) * 2004-04-07 2006-10-11 Charles Basil Firth Wheelchair with elevating seat
WO2008005050A3 (en) * 2006-06-30 2008-10-30 Trust Better Life Corp I Support frame for a lift chair
US7819476B2 (en) 2006-06-30 2010-10-26 I-Trust Better Life Corp. Lift chair and a chair base frame with a force balance mechanism for use therewith
EP1891921A1 (en) * 2006-08-21 2008-02-27 Opruga d.d. Seating furniture with lifting mechanism to assist getting up
IT201800010191A1 (en) 2018-11-09 2020-05-09 Valentino Costola EQUIPMENT FOR LIFTING PEOPLE THAT CAN BE ASSOCIATED WITH THE SEAT OF A CHAIR OR ARMCHAIR.

Also Published As

Publication number Publication date
EP0077280B1 (en) 1986-05-28
ES8306319A1 (en) 1983-06-01
DE3271399D1 (en) 1986-07-03
ES516118A0 (en) 1983-06-01
FR2513876A1 (en) 1983-04-08
FR2513876B1 (en) 1984-01-13

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