EP0269528B1 - Device for automatically lifting and lowering the movable parts of chairs and beds - Google Patents

Device for automatically lifting and lowering the movable parts of chairs and beds Download PDF

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Publication number
EP0269528B1
EP0269528B1 EP87420155A EP87420155A EP0269528B1 EP 0269528 B1 EP0269528 B1 EP 0269528B1 EP 87420155 A EP87420155 A EP 87420155A EP 87420155 A EP87420155 A EP 87420155A EP 0269528 B1 EP0269528 B1 EP 0269528B1
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EP87420155A
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German (de)
French (fr)
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EP0269528A2 (en
EP0269528A3 (en
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Bernard Heyward
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Priority to AT87420155T priority Critical patent/ATE60203T1/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/04—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/041—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by electric motors

Definitions

  • the present invention relates to a device for automatically raising and lowering the adjustable movable elements of armchairs and beds and intended in particular, in the case of armchairs and beds for the sick, to allow the actuation by these of these adjustable elements without requiring a special effort on their part.
  • FR 1 542 464 a device has been proposed for lowering and lifting the adjustable elements of armchairs and beds, which use a gas spring, infinitely adjustable and actuated by a joystick.
  • a gas spring is in fact advantageous because such a spring is, by virtue of its particular structure, always able to keep the element to be adjusted substantially in balance. Therefore, it is sufficient, after release of the jack, by the person on the bed or the seat, to exert a relatively small force to cause a break in balance and allow the movement of the element to be adjusted in the desired direction .
  • a gas spring is much less expensive than the motors or hydraulic systems used until now.
  • the device of this FR 1 542 464 it is necessary for the person, sitting on the seat or lying on the bed, to exert a certain effort in the abdominal muscles in particular, to lower or raise the mobile element.
  • the device can therefore not be used by people who are very weak in bed and who have only weak abdominal muscles.
  • this FR 1 542 464 only shows an exemplary embodiment for the tilting of a bed backrest and shows a very complicated gas cylinder control system.
  • the object of the present invention is to remedy these drawbacks and to provide a device for automatically raising and lowering the adjustable elements of armchairs and beds, which can be used by a patient, without requiring any effort on the part of the latter. and without the assistance of a third person.
  • the object of the present invention is also to provide a control system for the adjustment device which is directly accessible by the patient, even if it is for example, the lower part of the bed or seat, that is to say say the part of it intended to receive the lower limbs of the patient.
  • the device according to the invention which is of the type comprising a self-locking gas spring associated with each movable element of the seat or bed and arranged so as to allow, by its elongation, the lifting of this movable element, in that 'Each gas spring is associated with a mass acting in opposition to it and able to be moved so as to compensate at rest the force of the gas spring relative to the weight of the person bearing on this mobile element.
  • the gas spring must be chosen so as to exert an effort that can take into account different weights of people.
  • the fact of providing a compensating mass makes it possible to perfectly balance the action of the gas spring and that of the movable element at rest, so that a very slight relief of this movable element will be sufficient to allow the extension of the jack and displacement of the movable element.
  • the compensation mass is mounted so that it can be moved, in the direction of the articulation of the movable element on the seat or the bed, simultaneously with the actuation of the release command of the gas spring.
  • This embodiment is particularly advantageous in the case of mobile elements serving as a footrest, due to the weight of the legs and the significant muscular effort required at the level of the abdominal muscles to lift them.
  • FIG. 1 The figures show the application of the device according to the invention to a patient bed.
  • This bed is formed of a frame consisting of a rectangular frame 2 and feet 3.
  • On the frame 2 are articulated two movable elements 4 and 5 intended to serve respectively as headrests and footrests.
  • Each of these elements 4-5 is articulated at the central part of the bed along axes of articulation respectively 6 and 7. It will be noted here that only the structure of the bed is shown in the figures and that the elements such as box spring and mattresses have been removed for simplicity.
  • a gas spring 8 is articulated between a cross member 9, located at the lower part, that is to say the one where the footrest 5 is located, of the bed and the element headrest 4 proper.
  • This spring is arranged so as to cause its upward tilting of the element 4 by rotation about its axis 6.
  • the articulation of this spring 8 is carried out in a manner known per se by means of yokes 10.
  • a lever 11 allows the gas spring 8, which is a self-locking type spring, to be set in motion.
  • This lever 11 is connected to an axis 12 extending transversely and provided at its free end with a finger 13 which is capable of urging the end of the rod 8a of the gas spring 8 to cause the extension thereof .
  • FIG. 3 shows the detail of the embodiment of this actuating finger 13.
  • the latter engages in a slot 14 formed in a cylindrical sleeve 15 through which projects the rod 8a of the gas spring 8 and which is articulated on the cross member 9 by means of the yoke 10. It will easily be understood that the pivoting of the lever 11 will cause the pivoting of the finger 13 and consequently the actuation of the rod 8a of the gas spring.
  • a bar 19 On the headrest element 4 is also arranged, on one of the sides 4a thereof, a bar 19 extending parallel to this side. On this bar 19 a mass 16 is slidably mounted. This mass 16 can be moved by means of a handle 17 and can be locked in a determined position by means of a screw 18. This mass 16 makes it possible to calibrate the device for lifting the headrest element in depending on the weight of the person lying on the bed.
  • a graduated scale 20 can be arranged for this purpose on the frame 2 of the bed parallel to the bar 19, this scale being calibrated in kg and graduated for example from 10 to 130 kg.
  • a security system may also be provided to maintain the headrest element 4 in the raised position.
  • This security system consists of a rod 25 articulated at its upper end 25a on the frame of the element mobile 4 and can be blocked at its lower end 25b on the frame 2 of the bed, by means of a butterfly screw 26 or the like. This blocking can be carried out for example by medical personnel.
  • the operation of the lifting device for the headrest element 4 is as follows: once the patient is in place on the bed, a calibration according to the weight thereof is carried out by displacement of the mass 16 along the bar 19.
  • a calibration according to the weight thereof is carried out by displacement of the mass 16 along the bar 19.
  • the lever 11 When the patient wishes to raise this element 4 from the low position, it suffices to actuate the lever 11 and slightly straighten the head in order to discharge the gas spring (8), this action being sufficient to allow the extension of the spring once it is released.
  • the actuation of this lever in fact causes the displacement of the rod of the gas spring 8 as indicated above and consequently causes the rotation of the element 4 around its axis 6 under the action of this gas spring.
  • the raising of the footrest element 5 can be carried out in the same way using a gas spring 28.
  • This spring 28 is articulated between a cross member 29 located at the upper part of the bed, that is to say ie that where the headrest element 4 is located, and the footrest element 5 itself.
  • the articulation of this spring 28 on the cross-member 29 and the element 5 is also produced in a manner known per se by means of yokes 10.
  • a handle 31 allows the actuation of this gas spring 28.
  • This handle 31 is fixed to one end of an axis 32 extending transversely to the frame 2 of the bed and rotatably mounted thereon.
  • On this axis 32 is fixed, in rotationally integral manner, a U-shaped stirrup 33.
  • On the bottom of this stirrup 33 rests an actuating rod 34 having substantially the shape of an L whose curved part 34a is engaged in a sleeve 36 which makes it possible to connect the rod 28a of the gas spring to the yoke 10 for fixing the latter on the cross-member 29.
  • the stirrup 33 also pivots and thereby causes the rotation of the actuating rod 34.
  • the actuating rod 34 exerts by its curved part 34a a push to the end of the gas spring rod as previously explained in connection with the gas spring 8, and causes the release of this gas spring.
  • the actuating rod 34 also has several recesses 35 (in this case 4 in the example of the drawing) whose role will be explained below.
  • Below the footrest element 5 are arranged two parallel bars 40 extending in the longitudinal direction of this element.
  • a mass 41 is slidably mounted along these bars 40.
  • This mass 41 is moreover connected to the axis 32 by means of a rod 43 and a connecting rod 44 on which this rod is articulated. Therefore, the displacement of the mass 41 along the bars 40 is controlled by the actuation of the lever 31.
  • the operation of the lifting device of the footrest element 5 is as follows: when the patient wishes to raise this element 5 he actuates the lever 31. This actuation has the effect of causing the displacement of the mass 41 in direction of the hinge pin 7 thereof. Therefore, the moment relative to the axis 7 exerted by this mass 41 decreases and from a certain value becomes sufficiently low to allow the gas spring 28 to cause the upward movement of this element 5 by rotation relative to its axis 7.
  • this mass 41 which acts in antagonism with the spring 28, makes it possible to obtain compensation for the weight of the patient relative to the force exerted by the gas spring 28.
  • the gas spring 28 must be chosen so as to be powerful enough to allow the lifting of the footrest element when a person of high weight is on it. Consequently, the mass 41 makes it possible for a person of a lower weight to compensate for the difference in force opposing that of the gas spring 28.
  • the additional weight caused by the mass 41 must be reduced if the '' we want to raise the footrest element 5, which is achieved by moving this mass 41 in the direction of the axis of articulation. This arrangement therefore allows a patient to raise the footrest element of his bed without having to exert any effort to raise these legs, which is particularly advantageous especially in the case of a patient with poor abdominal strength.
  • the patient would be obliged, to raise the element 5, to lift his legs, and therefore to exert a certain muscular effort to allow a displacement by means of the springs to gas.
  • the recesses 35 make it possible to trigger actuation of the spring 28 only from a certain position of the mass 41 depending on the weight of the person. Indeed, as long as the mass 41 is in a position such that its force will oppose the movement of the gas spring, the stirrup 33 will pass over the recesses 35 without causing a rotation of the actuating rod 34 due to the fact of the system gas spring self-locking 28.
  • the lever 31 makes it possible to pivot the axis 32 fixed at the end of a crosspiece 45 situated under the chassis 2.
  • This axis 32 is provided with two bosses 32a 32b provided for rotate the smooth rod 46 for unlocking the spring 28.
  • the present invention is not limited to the exemplary embodiments shown above.
  • the mass 41 at the level of the footrest element 5 could be mounted movable along one side of the bed as in the case of the mass 16 and that a blocking system similar to the rod 25 could also be provided for this element 5.
  • the mass 16 could be designed so as to be displaced, in order to lighten the effort exerted on the spring 28, at the same time as the latter is released so as to here also eliminate any effort for the patient .
  • the displacement of one or the other of the two masses (16,41) could also be obtained by rotation of a micrometric screw on which these masses move, such a system allowing a continuous adjustment of the position of the two masses .
  • a notch system with spring-loaded ball may also be provided between the mass 41 and the rod 40 on which it slides to adjust the position of the weight discontinuously.
  • stirrup actuation system 33 of the rod 34 may be replaced by an eccentric system carried by the axis 32 and the rod 34 may have only two recesses 35 corresponding to extreme weight values.
  • the device according to the invention can also be used without the masses 16,41, which are intended solely to reduce the force exerted by the user. In this case, of course, the user will have to make a certain effort to raise or lower the different moving parts.
  • the device according to the invention can also be adopted for raising movable elements of seats or the like and is not limited to raising movable elements of bed. It is easy to see the advantage of the device according to the invention which can be easily handled by anyone, even a very weak or disabled person.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

This device is of the type comprising a self-locking gas spring (8, 28) associated with each movable element (4, 5) of the chair or bed and arranged so as to permit, via its elongation, lifting of this movable element; each gas spring (8, 28) has an associated weight, respectively (16, 41), acting in opposition to said spring and capable of being displaced so as to compensate, at rest, the force of the gas spring (8, 28) relative to the weight of the person supported by this movable element (4, 5). This device may be used by any able-bodied or handicapped person without requiring any effort on the part thereof and without assistance from a third person. <IMAGE>

Description

La présente invention concerne un dispositif pour lever et abaisser automatiquement les éléments mobiles réglables de fauteuils et de lits et destiné notamment, dans le cas de fauteuils et de lits pour malades, à permettre l'actionnement par ceux-ci de ces éléments réglables sans nécessiter un effort particulier de leur part.The present invention relates to a device for automatically raising and lowering the adjustable movable elements of armchairs and beds and intended in particular, in the case of armchairs and beds for the sick, to allow the actuation by these of these adjustable elements without requiring a special effort on their part.

On connaît déjà des dispositifs entraînés par moteur ou par voie hydraulique pour modifier l'inclinaison des dossiers, surfaces de couchette et surfaces d'appui des fauteuils et des lits. Or, les dispositifs à moteur sont de construction coûteuse et ne sont utilisés qu'avec des sièges ou lits spéciaux. Les dispositifs de réglage fonctionnant par voie hydraulique sont également extrêmement coûteux.There are already known devices driven by motor or hydraulically to modify the inclination of the backrests, berth surfaces and bearing surfaces of armchairs and beds. However, motor devices are expensive to build and are only used with special seats or beds. Hydraulically operated adjustment devices are also extremely expensive.

Par le FR 1 542 464, il a été proposé un dispositif permettant d'abaisser et de lever les éléments réglables de fauteuils et de lits, qui utilisent un ressort à gaz, réglable en continu et actionné par une manette.By FR 1 542 464, a device has been proposed for lowering and lifting the adjustable elements of armchairs and beds, which use a gas spring, infinitely adjustable and actuated by a joystick.

L'utilisateur d'un ressort à gaz est en effet avantageuse du fait qu'un tel ressort est, de par sa structure particulière, toujours en mesure de maintenir sensiblement en équilibre l'élément à régler. De ce fait, il suffit, après déblocage du vérin, par la personne sur le lit ou le siège, d'exercer un effort relativement faible pour provoquer une rupture d'équilibre et permettre le déplacement de l'élément à régler dans le sens désiré. En outre, un ressort à gaz est beaucoup moins coûteux que les moteurs ou systèmes hydrauliques utilisés jusqu'à présent.The user of a gas spring is in fact advantageous because such a spring is, by virtue of its particular structure, always able to keep the element to be adjusted substantially in balance. Therefore, it is sufficient, after release of the jack, by the person on the bed or the seat, to exert a relatively small force to cause a break in balance and allow the movement of the element to be adjusted in the desired direction . In addition, a gas spring is much less expensive than the motors or hydraulic systems used until now.

Cependant, dans le dispositif de ce FR 1 542 464, il est nécessaire que la personne, assise sur le siège ou couchée sur le lit, exerce un certain effort au niveau des muscles abdominaux notamment, pour abaisser ou relever l'élément mobile. Le dispositif ne peut donc pas être utilisé par des personnes alitées très faibles et ou n'ayant qu'une faible musculation abdominale.However, in the device of this FR 1 542 464, it is necessary for the person, sitting on the seat or lying on the bed, to exert a certain effort in the abdominal muscles in particular, to lower or raise the mobile element. The device can therefore not be used by people who are very weak in bed and who have only weak abdominal muscles.

En outre, ce FR 1 542 464 ne montre qu'un exemple de réalisation pour le basculement d'un dossier de lit et montre un système de commande du vérin à gaz très compliqué.In addition, this FR 1 542 464 only shows an exemplary embodiment for the tilting of a bed backrest and shows a very complicated gas cylinder control system.

Le but de la présente invention est de remédier à ces inconvénients et de prévoir un dispositif pour lever et abaisser automatiquement les éléments réglables de fauteuils et de lits, qui puisse être utilisé par un malade, sans nécessiter aucun effort de la part de celui-ci et sans l'assistance d'une tierce personne.The object of the present invention is to remedy these drawbacks and to provide a device for automatically raising and lowering the adjustable elements of armchairs and beds, which can be used by a patient, without requiring any effort on the part of the latter. and without the assistance of a third person.

Le butde la présente invention est également de prévoir un système de commande du dispositif de réglage qui soit accessible directement par le malade, même s'il s'agit par exemple, de la partie inférieure du lit ou siège, c'est-à-dire la partie de celui-ci destinée à recevoir les membres inférieurs du malade.The object of the present invention is also to provide a control system for the adjustment device which is directly accessible by the patient, even if it is for example, the lower part of the bed or seat, that is to say say the part of it intended to receive the lower limbs of the patient.

Ce but est atteint dans le dispositif selon l'invention, qui est du type comprenant un ressort à gaz autobloquant associé à chaque élément mobile du siège ou lit et disposé de façon à permettre par son allongement le relevage de cet élément mobile, en ce qu'à chaque ressort à gaz est associée une masse agissant en antagonisme de celui-ci et apte à être déplacée de façon à compenser au repos l'effort du ressort à gaz par rapport au poids de la personne en appui sur cet élément mobile.This object is achieved in the device according to the invention, which is of the type comprising a self-locking gas spring associated with each movable element of the seat or bed and arranged so as to allow, by its elongation, the lifting of this movable element, in that 'Each gas spring is associated with a mass acting in opposition to it and able to be moved so as to compensate at rest the force of the gas spring relative to the weight of the person bearing on this mobile element.

En effet, le ressort à gaz doit être choisi de façon à exercer un effort pouvant tenir compte de différents poids de personnes. Le fait de prévoir une masse de compensation, permet d'équilibrer parfaitement au repos l'action du ressort à gaz et celle de l'élément mobile, de sorte qu'un allège- ment très léger de cet élément mobile sera suffisant pour permettre l'extension du vérin et le déplacement de l'élément mobile.Indeed, the gas spring must be chosen so as to exert an effort that can take into account different weights of people. The fact of providing a compensating mass makes it possible to perfectly balance the action of the gas spring and that of the movable element at rest, so that a very slight relief of this movable element will be sufficient to allow the extension of the jack and displacement of the movable element.

Avantageusement, la masse de compensation est montée de façon à pouvoir être déplacée, en direction de l'articulation de l'élément mobile sur le siège ou le lit, simultanément à l'actionnement de la commande de déblocage du ressort à gaz.Advantageously, the compensation mass is mounted so that it can be moved, in the direction of the articulation of the movable element on the seat or the bed, simultaneously with the actuation of the release command of the gas spring.

De ce fait, le moment résistant exercé par la masse de compensation par rapport à l'articulation diminue, ce qui permet l'extension du vérin sans qu'aucun effort de soulèvement de la personne soit nécessaire.As a result, the resistant moment exerted by the compensating mass with respect to the articulation decreases, which allows the extension of the jack without any lifting effort of the person being necessary.

Cette forme de réalisation est particulièrement avantageuse dans le cas d'éléments mobiles servant de repose-pieds, du fait du poids des jambes et de l'effort musculaire important exigé au niveau des muscles abdominaux pour soulever celles-ci.This embodiment is particularly advantageous in the case of mobile elements serving as a footrest, due to the weight of the legs and the significant muscular effort required at the level of the abdominal muscles to lift them.

De toute façon, le dispositif selon l'invention et d'autres caractéristiques de celui-ci seront mis en évidence à l'aide de la description qui suit en référence au dossier schématique annexé illustrant à titre d'exemple non limitatif une forme de réalisation préférée de celui-ci.

  • Figure 1 est une vue en coupe selon Il de figure 2 du bâti d'un lit équipé du dispositif selon l'invention.
  • Figure 2 est une vue de dessus du bâti de lit de figure 1.
  • Figure 3 est à échelle agrandie, une vue de détail du système de déblocage d'un ressort à gaz.
  • Figure 4 est, à échelle agrandie, une vue de détail d'une variante du système d'actionnement de la tige de déblocage du ressort assurant le relèvement des éléments mobiles du lit.
Anyway, the device according to the invention and other characteristics of it will be highlighted with the help of the description which follows with reference to the attached schematic file illustrating by way of nonlimiting example an embodiment favorite of it.
  • Figure 1 is a sectional view along II of Figure 2 of the frame of a bed equipped with the device according to the invention.
  • Figure 2 is a top view of the bed frame of Figure 1.
  • Figure 3 is an enlarged scale, a detailed view of the release system of a gas spring.
  • Figure 4 is, on an enlarged scale, a detailed view of a variant of the actuation system of the spring release rod ensuring the lifting of the movable elements of the bed.

Les figures montrent l'application du dispositif selon l'invention à un lit pour malade. Ce lit est formé d'un bâti constitué d'un cadre rectangulaire 2 et de pieds 3. Sur le cadre 2 sont articulés deux éléments mobiles 4 et 5 destinés à servir respectivement d'appui-tête et de repose-pieds. Chacun de ces éléments 4-5 est articulé au niveau de la partie centrale du lit selon des axes d'articulation respectivement 6 et 7. On notera ici que seule la stucture du lit est représentée sur les figures et que les éléments tels que sommier et matelas ont été enlevés pour plus de simplicité.The figures show the application of the device according to the invention to a patient bed. This bed is formed of a frame consisting of a rectangular frame 2 and feet 3. On the frame 2 are articulated two movable elements 4 and 5 intended to serve respectively as headrests and footrests. Each of these elements 4-5 is articulated at the central part of the bed along axes of articulation respectively 6 and 7. It will be noted here that only the structure of the bed is shown in the figures and that the elements such as box spring and mattresses have been removed for simplicity.

Un ressort à gaz 8 est articulé entre une traverse 9, située à la partie inférieure, c'est-à-dire celle où se trouve le repose-pied 5, du lit et l'élément appui-tête 4 proprement dit. Ce ressort est disposé de façon à provoquer par son extension le basculement vers le haut de l'élément 4 par rotation autour de son axe 6. L'articulation de ce ressort 8 est effectuée de façon connue en soi au moyen de chapes 10.A gas spring 8 is articulated between a cross member 9, located at the lower part, that is to say the one where the footrest 5 is located, of the bed and the element headrest 4 proper. This spring is arranged so as to cause its upward tilting of the element 4 by rotation about its axis 6. The articulation of this spring 8 is carried out in a manner known per se by means of yokes 10.

Une manette 11 permet de provoquer la mise en mouvement du ressort à gaz 8 qui est un ressort de type autobloquant. Cette manette 11 est reliée à un axe 12 s'étendant transversalement et muni à son extrémité libre d'un doigt 13 qui est apte à solliciter l'extrémité de la tige 8a du ressort à gaz 8 pour provoquer l'extension de celui-ci.A lever 11 allows the gas spring 8, which is a self-locking type spring, to be set in motion. This lever 11 is connected to an axis 12 extending transversely and provided at its free end with a finger 13 which is capable of urging the end of the rod 8a of the gas spring 8 to cause the extension thereof .

La figure 3 montre le détail de réalisation de ce doigt d'actionnement 13. Celui-ci s'engage dans une lumière 14 ménagée dans un manchon cylindrique 15 à travers lequel saille la tige 8a du ressort à gaz 8 et qui est articulé sur la traverse 9 au moyen de la chape 10. On concevra aisément que le pivotement de la manette 11 provoquera le pivotement du doigt 13 et par conséquent l'actionnement de la tige 8a du ressort à gaz.FIG. 3 shows the detail of the embodiment of this actuating finger 13. The latter engages in a slot 14 formed in a cylindrical sleeve 15 through which projects the rod 8a of the gas spring 8 and which is articulated on the cross member 9 by means of the yoke 10. It will easily be understood that the pivoting of the lever 11 will cause the pivoting of the finger 13 and consequently the actuation of the rod 8a of the gas spring.

Sur l'élément appui-tête 4 est également disposée, sur un des côtés 4a de celui-ci, une barre 19 s'étendant parallèlement à ce côté. Sur cette barre 19 une masse 16 est montée coulissante. Cette masse 16 peut être déplacée au moyen d'une poignée 17 et peut être bloquée à une position déterminée au moyen d'une vis 18. Cette masse 16 permet d'effectuer un tarage du dispositif de relèvement de l'élément appui-tête en fonction du poids de la personne couchée sur le lit. Une échelle graduée 20 peut être disposée à cet effet sur le cadre 2 du lit parallèlement à la barre 19, cette échelle étant étalonnée en kg et graduée par exemple de 10 à 130 kg.On the headrest element 4 is also arranged, on one of the sides 4a thereof, a bar 19 extending parallel to this side. On this bar 19 a mass 16 is slidably mounted. This mass 16 can be moved by means of a handle 17 and can be locked in a determined position by means of a screw 18. This mass 16 makes it possible to calibrate the device for lifting the headrest element in depending on the weight of the person lying on the bed. A graduated scale 20 can be arranged for this purpose on the frame 2 of the bed parallel to the bar 19, this scale being calibrated in kg and graduated for example from 10 to 130 kg.

Un système de sécurité peut en outre être prévu pour assurer la maintien en position relevée de l'élément appui-tête 4. Ce système de sécurité est constitué d'une tige 25 articulée à son extrémité supérieure 25a sur l'ossature de l'élément mobile 4 et pouvant être bloquée à son extrémité inférieure 25b sur le cadre 2 du lit, au moyen d'une vis papillon 26 ou similaire. Ce blocage peut être effectué par exemple par le personnel médical.A security system may also be provided to maintain the headrest element 4 in the raised position. This security system consists of a rod 25 articulated at its upper end 25a on the frame of the element mobile 4 and can be blocked at its lower end 25b on the frame 2 of the bed, by means of a butterfly screw 26 or the like. This blocking can be carried out for example by medical personnel.

Le fonctionnement du dispositif de relevage pour l'élément appui-tête 4 est le suivant: une fois le malade en place sur le lit, un tarage en fonction du poids de celui-ci est effectué par déplacement de la masse 16 le long de la barre 19. Lorsque le malade désire relever cet élément 4 à partir de la position basse, il lui suffit d'actionner la manette 11 et de redresser légèrement la tête afin de décharger le ressort à gaz (8), cette action étant suffisante pour permettre l'extension du ressort une fois celui-ci débloqué. L'actionnement de cette manette provoque en effet, le déplacement de la tige du ressort à gaz 8 comme indiqué précédemment et provoque par conséquent la rotation de l'élément 4 autour de son axe 6 sous l'action de ce ressort à gaz.The operation of the lifting device for the headrest element 4 is as follows: once the patient is in place on the bed, a calibration according to the weight thereof is carried out by displacement of the mass 16 along the bar 19. When the patient wishes to raise this element 4 from the low position, it suffices to actuate the lever 11 and slightly straighten the head in order to discharge the gas spring (8), this action being sufficient to allow the extension of the spring once it is released. The actuation of this lever in fact causes the displacement of the rod of the gas spring 8 as indicated above and consequently causes the rotation of the element 4 around its axis 6 under the action of this gas spring.

Le relèvement de l'élément repose-pieds 5 peut être réalisé de la même façon à l'aide d'un ressort à gaz 28. Ce ressort 28 est articulé entre une traverse 29 située à la partie supérieure du lit, c'est-à-dire celle où se trouve l'élément appui-tête 4, et l'élément repose-pied 5 proprement dit. L'articulation de ce ressort 28 sur la traverse 29 et l'élément 5 est également réalisée de façon connue en soi au moyen de chapes 10.The raising of the footrest element 5 can be carried out in the same way using a gas spring 28. This spring 28 is articulated between a cross member 29 located at the upper part of the bed, that is to say ie that where the headrest element 4 is located, and the footrest element 5 itself. The articulation of this spring 28 on the cross-member 29 and the element 5 is also produced in a manner known per se by means of yokes 10.

Une manette 31 permet l'actionnement de ce ressort à gaz 28. Cette manette 31 est fixée à une extrémité d'un axe 32 s'étendant transversalement au cadre 2 du lit et monté rotatif sur celui-ci. Sur cet axe 32 est fixé, de façon solidaire en rotation, un étrier 33 en forme de U. Sur le fond de cet étrier 33 repose une tige d'actionnement 34 ayant sensiblement la forme d'un L dont la partie recourbée 34a est engagée dans un manchon 36 qui permet de relier la tige 28a du ressort à gaz à la chape 10 de fixation de celui-ci sur la traverse 29.A handle 31 allows the actuation of this gas spring 28. This handle 31 is fixed to one end of an axis 32 extending transversely to the frame 2 of the bed and rotatably mounted thereon. On this axis 32 is fixed, in rotationally integral manner, a U-shaped stirrup 33. On the bottom of this stirrup 33 rests an actuating rod 34 having substantially the shape of an L whose curved part 34a is engaged in a sleeve 36 which makes it possible to connect the rod 28a of the gas spring to the yoke 10 for fixing the latter on the cross-member 29.

Lors du pivotement de la manette 31, l'étrier 33 pivote également et provoque de ce fait la rotation de la tige d'actionnement 34. Par cette rotation, la tige d'actionnement 34 exerce par sa partie recourbée 34a une poussée à l'extrémité de la tige du ressort à gaz comme expliqué précédemment en liaison avec le ressort à gaz 8, et provoque le déblocage de ce ressort à gaz.During the pivoting of the lever 31, the stirrup 33 also pivots and thereby causes the rotation of the actuating rod 34. By this rotation, the actuating rod 34 exerts by its curved part 34a a push to the end of the gas spring rod as previously explained in connection with the gas spring 8, and causes the release of this gas spring.

La tige d'actionnement 34 présente également plusieurs décrochements 35 (en l'occurence 4 dans l'exemple du dessin) dont le rôle sera expliqué plus loin. En dessous de l'élément repose-pieds 5 sont disposées deux barres parallèles 40 s'étendant dans la direction longitudinale de cet élément. Une masse 41 est montée coulissante le long de ces barres 40. Cette masse 41 est par ailleurs reliée à l'axe 32 par l'intermédiaire d'une tige 43 et d'une bielle 44 sur laquelle cette tige est articulée. De ce fait, le déplacement de la masse 41 le long des barres 40 est commandé par l'actionnement de la manette 31.The actuating rod 34 also has several recesses 35 (in this case 4 in the example of the drawing) whose role will be explained below. Below the footrest element 5 are arranged two parallel bars 40 extending in the longitudinal direction of this element. A mass 41 is slidably mounted along these bars 40. This mass 41 is moreover connected to the axis 32 by means of a rod 43 and a connecting rod 44 on which this rod is articulated. Therefore, the displacement of the mass 41 along the bars 40 is controlled by the actuation of the lever 31.

Dans ce cas, le fonctionnement du dispositif de relevage de l'élément repose-pieds 5 est le suivant: lorsque le malade désire relever cet élément 5 il actionne la manette 31. Cet actionnement a pour effet de provoquer le déplacement de la masse 41 en direction de l'axe d'articulation 7 de celui-ci. De ce fait, le moment par rapport à l'axe 7 exercé par cette masse 41 diminue et à partir d'une certaine valeur devient suffisamment faible pour permettre au ressort à gaz 28 de provoquer le déplacement vers le haut de cet élément 5 par rotation par rapport à son axe 7.In this case, the operation of the lifting device of the footrest element 5 is as follows: when the patient wishes to raise this element 5 he actuates the lever 31. This actuation has the effect of causing the displacement of the mass 41 in direction of the hinge pin 7 thereof. Therefore, the moment relative to the axis 7 exerted by this mass 41 decreases and from a certain value becomes sufficiently low to allow the gas spring 28 to cause the upward movement of this element 5 by rotation relative to its axis 7.

On notera que la prévision de cette masse 41, qui agit en antagonisme avec le ressort 28, permet d'obtenir une compensation du poids du malade par rapport à l'effort exercé par le ressort à gaz 28. En effet, le ressort à gaz 28 doit être choisi de façon à être suffisamment puissant pour permettre le soulèvement de l'élément repose-pieds lorsqu'une personne d'un poids élevé se trouve sur celui-ci. Par conséquent, la masse 41 permet pour une personne d'un poids inférieur de compenser la différence d'effort s'opposant à celui du ressort à gaz 28. Par contre, le supplément de poids occasionné par la masse 41 doit être diminué si l'on veut relever l'élément repose-pieds 5, ce qui est réalisé par le déplacement de cette masse 41 en direction de l'axe d'articulation. Cette disposition permet donc à un malade de relever l'élément repose-pied de son lit sans avoir à exercer aucun effort pour relever ces jambes, ce qui est particulièrement intéressant notamment dans le cas d'un malade ayant une faible musculation abdominale.It will be noted that the prediction of this mass 41, which acts in antagonism with the spring 28, makes it possible to obtain compensation for the weight of the patient relative to the force exerted by the gas spring 28. In fact, the gas spring 28 must be chosen so as to be powerful enough to allow the lifting of the footrest element when a person of high weight is on it. Consequently, the mass 41 makes it possible for a person of a lower weight to compensate for the difference in force opposing that of the gas spring 28. On the other hand, the additional weight caused by the mass 41 must be reduced if the '' we want to raise the footrest element 5, which is achieved by moving this mass 41 in the direction of the axis of articulation. This arrangement therefore allows a patient to raise the footrest element of his bed without having to exert any effort to raise these legs, which is particularly advantageous especially in the case of a patient with poor abdominal strength.

En effet, si la masse de compensation 41 n'était pas déplaçable, le malade serait obligé, pour relever l'élément 5, de soulever ses jambes, et donc d'exercer un certain effort musculaire pour permettre un déplacement au moyen des ressorts à gaz.Indeed, if the compensating mass 41 was not movable, the patient would be obliged, to raise the element 5, to lift his legs, and therefore to exert a certain muscular effort to allow a displacement by means of the springs to gas.

Or, dans le cas de personnes très faibles, un tel effort ne peut être effectué par celles-ci et le relevage des éléments mobiles du lit doit être effectué par une tierce personne dans le cas de système usuel, utilisant simplement un ressort à gaz. La prévision du dispositif de compensation selon l'invention permet donc à une personne d'effectuer ces différentes opérations sans exercer aucun effort musculaire, l'effort effectué pour redresser la tête dans la tête cas étant tout à fait réduit.However, in the case of very weak people, such an effort cannot be carried out by them and the lifting of the mobile elements of the bed must be carried out by a third person in the case of the usual system, simply using a gas spring. The provision of the compensation device according to the invention therefore allows a person to perform these various operations without exerting any muscular effort, the effort made to straighten the head in the head case being completely reduced.

On notera que dans le cas de l'élément repose-pieds 5, les décrochements 35 permettent de ne déclencher d'actionnement du ressort 28 qu'à partir d'une certaine position de la masse 41 fonction du poids de la personne. En effet, tant que la masse 41 sera à une position telle que son effort s'opposera au déplacement du ressort à gaz, l'étrier 33 passera sur les décrochements 35 sans provoquer une rotation de la tige d'actionnement 34 du fait eu système d'auto-blocage du ressort à gaz 28.It will be noted that in the case of the footrest element 5, the recesses 35 make it possible to trigger actuation of the spring 28 only from a certain position of the mass 41 depending on the weight of the person. Indeed, as long as the mass 41 is in a position such that its force will oppose the movement of the gas spring, the stirrup 33 will pass over the recesses 35 without causing a rotation of the actuating rod 34 due to the fact of the system gas spring self-locking 28.

Ce n'est que lorsque la masse 41 aura atteint une position dans laquelle l'action qu'elle exerce, conjuguée avec celle de l'élément 5 et du poids du malade, sera inférieure à celle du ressort à gaz 28 que celui-ci pourra être débloqué par la tige 34.It is only when the mass 41 has reached a position in which the action which it exerts, combined with that of the element 5 and of the patient's weight, will be less than that of the gas spring 28 that the latter can be released by the rod 34.

Dans le mode de réalisation représenté à la figure 4, la manette 31 permet de faire pivoter l'axe 32 fixé à l'extrémité d'une traverse 45 située sous le chassis 2. Cet axe 32 est muni de deux bossages 32a 32b prévus pour faire pivoter la tige lisse 46 de déblocage du ressort 28.In the embodiment shown in FIG. 4, the lever 31 makes it possible to pivot the axis 32 fixed at the end of a crosspiece 45 situated under the chassis 2. This axis 32 is provided with two bosses 32a 32b provided for rotate the smooth rod 46 for unlocking the spring 28.

Bien entendu, la présente invention ne se limite pas aux exemples de réalisation montrés ci-avant. C'est ainsi que par exemple, la masse 41 au niveau de l'élément repose-pieds 5 pourrait être monté déplaçable le long d'un côté du lit comme dans le cas de la masse 16 et qu'un système de blocage similaire à la tige 25 pourrait également être prévu pour cet élément 5.Of course, the present invention is not limited to the exemplary embodiments shown above. Thus, for example, the mass 41 at the level of the footrest element 5 could be mounted movable along one side of the bed as in the case of the mass 16 and that a blocking system similar to the rod 25 could also be provided for this element 5.

De même, la masse 16 pourrait être conçue de façon à être déplacée, afin d'alléger l'effort s'exerçant sur le ressort 28, en même temps que celui-ci est débloqué de façon à supprimer ici aussi tout effort pour le malade. Le déplacement de l'une ou l'autre des deux masses (16,41) pourrait également être obtenu par rotation d'une vis micrométrique sur laquelle se déplacent ces masses, un tel système permettant un réglage en continu de la position des deux masses.Likewise, the mass 16 could be designed so as to be displaced, in order to lighten the effort exerted on the spring 28, at the same time as the latter is released so as to here also eliminate any effort for the patient . The displacement of one or the other of the two masses (16,41) could also be obtained by rotation of a micrometric screw on which these masses move, such a system allowing a continuous adjustment of the position of the two masses .

On notera également qu'un système de graduation similaire à la graduation 20 peut être prévu pour la masse 41.It will also be noted that a graduation system similar to the graduation 20 can be provided for the mass 41.

Un système à cran avec bille sollicitée par ressort pourra être également prévu entre la masse 41 et la tige 40 sur laquelle elle coulisse pour régler la position du poids de façon discontinue.A notch system with spring-loaded ball may also be provided between the mass 41 and the rod 40 on which it slides to adjust the position of the weight discontinuously.

De même, le système d'actionnement à étrier 33 de la tige 34 pourra être remplacé par un système à excentrique porté par l'axe 32 et la tige 34 pourra ne présenter que deux décrochements 35 correspondants à des valeurs de poids extrêmes.Similarly, the stirrup actuation system 33 of the rod 34 may be replaced by an eccentric system carried by the axis 32 and the rod 34 may have only two recesses 35 corresponding to extreme weight values.

On notera que le dispositif selon l'invention peut être également utilisé sans les masses 16,41, qui sont destinées uniquement à réduire l'effort exercé par l'utilisateur. Dans ce cas bien évidemment, l'utilisateur devra produire un certain effort pour relever ou abaisser les différentes parties mobiles.It will be noted that the device according to the invention can also be used without the masses 16,41, which are intended solely to reduce the force exerted by the user. In this case, of course, the user will have to make a certain effort to raise or lower the different moving parts.

Enfin, le dispositif selon l'invention peut également être adopté au relèvement d'éléments mobiles de sièges ou similaires et n'est pas limité au relèvement d'éléments mobiles de lit. On conçoit facilement tout l'intérêt du dispositif selon l'invention qui peut être manipulé facilement par toute personne même très faible ou invalide.Finally, the device according to the invention can also be adopted for raising movable elements of seats or the like and is not limited to raising movable elements of bed. It is easy to see the advantage of the device according to the invention which can be easily handled by anyone, even a very weak or disabled person.

Claims (13)

1. Vorrichtung zum automatischen Anheben und Absenken der beweglichen Teile von Ses- seln, Betten oder dgl., bei der jedes der beweglichen Teile (4, 5) des Sessels oder des Bettes mit jeweils einer selbstsperrenden Gasfeder (8, 28) verbunden ist, und die derart angeordnet ist, daβ bei ihrem Ausfahren das jeweilige bewegliche Element angehoben wird, dadurch gekennzeichnet, daβ jede Gasfeder (8, 28) jeweils mit einer dieser entgegenwirkenden Masse (16, 41) in Ver- bindung steht, die derart verschiebbar ist, daβ in Ruhestellung die Kraft der Gasfeder (8, 28) im Verhältnis zum Gewicht der auf diesem beweglichen Element (4, 5) aufliegenden Person ausgegli- chen wird.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daβ die Ausgleichsmasse (41) derart angebracht ist, daB sie bei Betatigung der Steuerung (35) der Entsperrung der Gasfeder (28) gleichzeitig in Richtung des Gelenks (7) des beweglichen Teiles (5) auf dem Sessel oder dem Bett bewegt wird.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daβ jede Masse (16, 41) entlang zumindest einer Stange (19, 40) bewegbar angebracht ist, die sich in Längsrichtung des beweglichen Teiles (4, 5) erstreckt.
4. Vorrichtung nach Anspruch 3, soweit dieser auf Anspruch 1 zuruckbezogen ist, dadurch gekennzeichnet, daβ die Masse (16) in einer bestimmten Stellung mittels einer Schraube (18) oder dgl. feststellbar ist.
5. Vorrichtung nach einem der Anspruche 1 bis 4, dadurch gekennzeichnet, daβ das Verschieben jeder Masse (16, 41) mittels einer Mikrometer- schraube bewirkt wird.
6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daβ die Entsperrung jeder Gasfeder (8, 28) mittels eines Bedienungshebels (11, 31) bewirkt wird, der mit einer Achswelle (12, 32) zur schwenkbaren Betätigung eines Betatigungszapfens (13, 34a) der Stange (8a, 28a) der Gasfeder verbunden ist.
7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daβ der Zapfen (13, 34a) in eine fensterartige Offnung (14) eingesetzt ist, die in einer zylindrischen Hülse (15, 36), aus der sich die Stange (8a, 28a) der Gasfeder herauserstreckt, ausgespart ist.
8. Vorrichtung nach Anspruch 6 oder 7, soweit diese auf die Ansprüche 2, 3 oder 5 rückbezogen sind, dadurch gekennzeichnet, daβ das Verschieben der Masse (41) mittels eines Systemes aus Stange (43) Pleuelstange (44) bewirkt wird, das mit dem Bedienungshebel (31) zum Entsperren der zugehorigen Gasfeder (28) verbunden ist.
9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daβ die Schwenkbewegung des Bedienungshebels (31) dem Entriegelungszapfen (34a) durch die Achswelle (32) mittels ein zwischenliegenden Exzentersystems übermittelt wird.
10. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daβ die Schwenkbewegung des Bedienungshebels (31) dem Entriegelungszapfen (34a) durch die Achswelle (32) mittels eines Bugels (33) ubertragen wird, auf dem ein äuβeres Ende einer Betatigungsstange (34) ruht, wobei das andere Ende dieser Stange mit dem Entriegelungszapfen (34a) versehen ist.
11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daβ die Stange (34) mehrere Höcker (35) aufweist, die dazu vorgesehen sind, mit dem Bugel (33) derart zusammenzuwirken, daβ sie die Betätigung der Feder (28) bei einer bestimmten Stellung der Masse (41) sperren, wobei diese eine Funktion der Gewicht der Person ist.
12. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daβ die Achswelle (32), die am äuβeren Ende eines unterhalb des Rahmens (2) angeordneten Quertragers (45) befestigt ist mit zumindest einem Buckel (32a) versehen ist, der dazu vorgesehen ist, die Entsperrstange (46) für die Feder (28) zu verschwenken.
13. Vorrichtung nach einem der Anspruche 1 bis 12, dadurch gekennzeichnet, daβ sie ein Sicherungssystem enthält, das durch eine Stange (25) gebildet wird, die an einem Ende (25a) am beweglichen Teil (4, 5) angelenkt ist und die an ihrem unteren Ende (25b) am Rahmen (2) des Bettes oder dgl. festgestellt werden kann.
EP87420155A 1986-11-26 1987-06-12 Device for automatically lifting and lowering the movable parts of chairs and beds Expired - Lifetime EP0269528B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87420155T ATE60203T1 (en) 1986-11-26 1987-06-12 DEVICE FOR AUTOMATIC LIFT AND LOWERING OF MOVABLE PARTS OF CHAIRS AND BEDS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8616770 1986-11-26
FR8616770A FR2607000B1 (en) 1986-11-26 1986-11-26 DEVICE FOR EFFICIENTLY MODIFYING THE POSITIONING OF FURNITURE FOR SICK OR HANDICAPPED PEOPLE WITH A PRE-CALIBRATION OF THE SYSTEM

Publications (3)

Publication Number Publication Date
EP0269528A2 EP0269528A2 (en) 1988-06-01
EP0269528A3 EP0269528A3 (en) 1989-03-22
EP0269528B1 true EP0269528B1 (en) 1991-01-23

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EP87420155A Expired - Lifetime EP0269528B1 (en) 1986-11-26 1987-06-12 Device for automatically lifting and lowering the movable parts of chairs and beds

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EP (1) EP0269528B1 (en)
AT (1) ATE60203T1 (en)
DE (1) DE3767676D1 (en)
ES (1) ES2019656B3 (en)
FR (1) FR2607000B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2635665B1 (en) * 1988-08-30 1994-03-18 Heyward Bernard DEVICE FOR AUTOMATICALLY LIFTING AND LOWERING MOBILE ELEMENTS OF ARMCHAIRS AND BEDS
FR2713065B1 (en) * 1993-11-29 1996-08-02 Bernard Heyward Device for automatically raising or lowering the upper and lower legs of an armchair or a bed.
EP0852123A1 (en) 1997-01-07 1998-07-08 Matra AG Device for adjusting the backrest and legrest of a frame for a bed
FR2790927B1 (en) 1999-03-17 2001-06-01 Delagrave TILT SEAT SEAT
FR2791536B1 (en) * 1999-03-31 2001-06-08 Bernard Heyward SYSTEM FOR AUTOMATICALLY JOINING A BODY LIFT SUPPORT, A LEG LIFT AND A FOOTREST FOR AN ARMCHAIR OR A BED BY A SINGLE LEVER
US8468625B2 (en) * 2010-02-12 2013-06-25 Procure Treatment Centers, Inc. Patient gurney having configurable registration capabilities

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1340321A (en) * 1962-09-07 1963-10-18 Murphy bed
FR1542464A (en) * 1966-07-06 1968-10-18 Bremshey & Co Device for automatically raising and lowering the adjustable elements of armchairs and beds, in particular for patients
CH531865A (en) * 1972-04-26 1972-12-31 Bamert & Co A Bed fitting for elevating the feet
CH553573A (en) * 1972-12-13 1974-09-13 Deucher Conrad R ADJUSTMENT DEVICE, IN PARTICULAR FOR THE EXECUTION OF A TILTING MOVEMENT OF THE SEAT OF AN ILLNESS CHAIR OR THE HEAD OR. FOOTBOARD OF A BED.
CH651739A5 (en) * 1981-09-09 1985-10-15 Hans Fickler DEVICE FOR ADJUSTING THE ANGLE POSITION OF A PIVOTING SUPPORT AREA.

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FR2607000A1 (en) 1988-05-27
ES2019656B3 (en) 1991-07-01
DE3767676D1 (en) 1991-02-28
EP0269528A2 (en) 1988-06-01
ATE60203T1 (en) 1991-02-15
EP0269528A3 (en) 1989-03-22
FR2607000B1 (en) 1989-03-31

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