EP1066169B1 - Actuating and locking system for positioning a bed or seat mobile elements - Google Patents

Actuating and locking system for positioning a bed or seat mobile elements Download PDF

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Publication number
EP1066169B1
EP1066169B1 EP99911854A EP99911854A EP1066169B1 EP 1066169 B1 EP1066169 B1 EP 1066169B1 EP 99911854 A EP99911854 A EP 99911854A EP 99911854 A EP99911854 A EP 99911854A EP 1066169 B1 EP1066169 B1 EP 1066169B1
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EP
European Patent Office
Prior art keywords
seat
bed
rod
motor
control device
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EP99911854A
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German (de)
French (fr)
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EP1066169A2 (en
Inventor
Jean-François PIAULET
Laurent Groussin
Pascal Moulin
Hugues Legras
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P G A Electronic
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P G A Electronic
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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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A47C1/0242—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by electric motors
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A47C1/025—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by means of a rack-and-pinion or like gearing mechanism

Definitions

  • the invention relates to an actuation system. for changing the position of moving parts a seat or a bed.
  • the invention finds applications in all areas using a seat or a bed whose moving parts can be operated electrically, according to the needs or comfort of the user.
  • the invention applies to seats intended for the carriage of passengers such as seats airplane, seats for the disabled, seats dentists, medical seats or beds, stretchers electric, etc.
  • seats at reclining backrests or reclining beds are used either for the comfort of users, such as airplane seats, either for practical reasons, like dentists' seats or seats for the disabled.
  • coefficients of friction which determine the yield and the irreversibility of this type of actuators fluctuate based on multiple parameters relating to the constituent materials the actuator; they fluctuate, in particular, in depending on the temperature and the nature of the lubrication of these materials.
  • document DE-A-3 136 653 describes an undercurrent blocking system preventing, by emergency, involuntary sliding and large amplitude of a vehicle seat. Such a system does not allow systematic blocking of the seat in position. In other words, it does not block infinite resolution.
  • the object of the invention is precisely to remedy to the disadvantages of the actuators described above. To this end, it offers an electric actuator, irreversibility (blocking of kinematics) is independent of the yield and obtained by a blocker lack of current mounted in parallel on a motor and supplied with energy by the same control device than the engine.
  • the blocker lacking current is a brake that locks the rod when is not electrically powered and which authorizes a movement of the rod when powered.
  • the transmission system is a straight gear reducer.
  • the motor is a rotary motor driving the rod in a rotational movement.
  • Figure 1 shows an example of a seat reclining backrest with modification system and of conservation of the inclination of the back, in accordance with the invention.
  • the invention will be described in its application to a seat with reclining back. He is at note, however, that the system of the invention can be used for a bed or a seat with one or more several mobile elements (headboard, railing, elevation system, backrest, headrest, leg rests, lumbar supports, etc.) may change of position.
  • mobile elements headboard, railing, elevation system, backrest, headrest, leg rests, lumbar supports, etc.
  • the position modification system of the folder shown in Figure 1, includes means for 3 mechanical displacement of file 1 and means actuation and locking 4 intended for activate and / or block these displacement means 3.
  • these means of actuation and lock, or actuator respond to a command the user to lower or straighten the backrest 1 of the seat relative to the seat 2 of this seat.
  • FIG. 2 shows, more detailed, an example of an actuator of the invention.
  • This actuator comprises an electric motor 5 on which is fixed a transmission rod 6 and of which the role is to cause the movement of this rod 6.
  • This transmission can be, for example, a rotation.
  • the motor 5 is supplied with energy by a control device 9.
  • This control device 9 receives a source voltage V s transmitted to the system by the diode CR1.
  • the actuator further comprises a blocker lack of current 7, supplied with voltage by the control device 9.
  • the role of this blocker is to allow the movement of the rod 6 when it is powered by the control device 9 and, at on the contrary, to prohibit the movement of the rod 6 when it is no longer powered.
  • This blocker with lack of current 7 perhaps, for example, an undercurrent brake or a electro magnet.
  • the motor 5 and the blocker 7 are connected in parallel and are powered by the same control device 9.
  • control device 9 allows simultaneously supply the motor 5 and the blocker 7 by a voltage of the same value (which perhaps, by example, 24 volts) to generate the movement.
  • the device allows cutting simultaneous supply of motor 5 and the supply of the blocker 7 to block the movement.
  • Such an actuator has an irreversibility almost total, which means that the irreversibility of the actuator is greater than its dynamic capacity.
  • the control device 9 is controlled by the voltage V s . It behaves so as to keep the motor voltage constant and at the same value as the voltage V s (when the motor becomes generator following a driving load or when the motor stops).
  • the control device 9 acts as soon as the voltage of the actuator V a is greater than the source voltage V s .
  • the transistor Q1 (which is, for example, a bipolar transistor) becomes “on” so as to drain the energy coming from the motor become generator; the transistor Q1 naturally becomes “blocked” again when the source voltage V s again becomes greater than the voltage of the actuator V a , therefore when the motor is no longer generator.
  • the engine stopping phase may be a special case of the driving load; indeed, the source voltage V s goes to around 0 Volt, which makes the transistor Q1 passing from the moment and as long as V a is greater than V s +0.6 Volt, in the case of the assembly of FIG. 2 .
  • the rod 6 is connected at its end to a transmission system 8 which provides training means of movement mechanical 3 of file 1.
  • this transmission system 8 is a gear reducer rights which has the advantage of offering a maximum return and therefore a decrease in consumption system, volume and weight of the system actuation compared to worm gear systems of the prior art.
  • the invention has the advantage of allowing a sharp decrease in the vacuum supply current and its fluctuations compared to the screw system endless of the prior art, due to the deletion significant friction in the gears, varying depending on the temperature and the risks of seizure after a prolonged stop.
  • the relationship between the energy consumed and the torque delivered is optimized and non-fluctuating in the system of the invention.
  • the value of the current is a faithful image of the mechanical energy transmitted.
  • the system includes a mechanical device 10, such as a lever, which allows to reverse or comfort mechanically the two states of the blocker for bearing at a possible defect in the control device 9 or for ensuring that security positions are obtained, by example, in the case of passenger seats on an airplane, subject to the regulations of the Federal Office of FAA aeronautics and the office of member countries of the JAA (joint aviation authorities) which require that they are in the right position during takeoff and landing the plane.
  • a mechanical device 10 such as a lever

Description

Domaine de l'inventionField of the invention

L'invention concerne un système d'actionnement permettant de modifier la position des éléments mobiles d'un siège ou d'un lit.The invention relates to an actuation system. for changing the position of moving parts a seat or a bed.

L'invention trouve des applications dans tous les domaines utilisant un siège ou un lit dont les éléments mobiles peuvent être actionnés électriquement, en fonction des besoins ou du confort de l'utilisateur. En particulier, l'invention s'applique aux sièges destinés au transport de passagers tels que les sièges d'avion, aux sièges pour handicapés, aux sièges de dentistes, aux sièges ou lits médicaux, aux civières électriques, etc.The invention finds applications in all areas using a seat or a bed whose moving parts can be operated electrically, according to the needs or comfort of the user. In particular, the invention applies to seats intended for the carriage of passengers such as seats airplane, seats for the disabled, seats dentists, medical seats or beds, stretchers electric, etc.

Etat de la techniqueState of the art

Dans de nombreux domaines, des sièges à dossiers inclinables ou des lits inclinables sont utilisés soit pour le confort des usagers, comme les sièges d'avion, soit pour des raisons pratiques, comme les sièges de dentistes ou les sièges pour handicapés.In many areas, seats at reclining backrests or reclining beds are used either for the comfort of users, such as airplane seats, either for practical reasons, like dentists' seats or seats for the disabled.

Classiquement, l'inclinaison des dossiers de sièges (ou lits) est obtenue par un actionneur réalisé à partir d'un système à roue(s) et vis sans fin entraíné par un moteur. Un tel actionneur est décrit notamment dans le brevet US-4 759 587. Conventionally, the inclination of the seats (or beds) is obtained by an actuator made from a wheel and worm system driven by a motor. Such an actuator is described in particular in patent US-4,759,587.

Cependant, dans le cas de ces actionneurs à vis sans fin, le blocage de la cinématique (appelé par la suite irréversibilité) est relativement difficile à obtenir ; aussi, pour atteindre une bonne irréversibilité, le rendement du système est nécessairement diminué. La mise en oeuvre d'un tel système entraíne donc un compromis entre l'irréversibilité et le rendement de l'actionneur.However, in the case of these screw actuators endless blocking of kinematics (called by the irreversibility) is relatively difficult to get ; also, to achieve good irreversibility, the performance of the system is necessarily decreased. The implementation of such system therefore involves a compromise between irreversibility and efficiency of the actuator.

Par ailleurs, les coefficients de frottement qui déterminent le rendement et l'irréversibilité de ce type d'actionneurs fluctuent en fonction de plusieurs paramètres relatifs aux matériaux constituant l'actionneur ; ils fluctuent, en particulier, en fonction de la température et de la nature de la lubrification de ces matériaux.In addition, the coefficients of friction which determine the yield and the irreversibility of this type of actuators fluctuate based on multiple parameters relating to the constituent materials the actuator; they fluctuate, in particular, in depending on the temperature and the nature of the lubrication of these materials.

Ainsi, lorsqu'un actionneur à vis sans fin est utilisé pour un siège ayant une charge statique importante, c'est-à-dire supérieure ou égale à la capacité dynamique de l'actionneur lui-même, il est difficile d'assurer une bonne irréversibilité ; or, pour obtenir une irréversibilité correcte, il faut accepter de diminuer le rendement ; cet actionneur a donc un mauvais rendement.So when a worm actuator is used for a seat with a static charge important, i.e. greater than or equal to the dynamic capacity of the actuator itself it is difficult to ensure good irreversibility; gold, to obtain a correct irreversibility, it is necessary agree to decrease performance; this actuator has therefore poor performance.

De plus, il est à noter que plus le rendement est mauvais, plus la valeur du courant nécessaire à l'actionneur à vide est élevée et fluctuante, du fait des frottements ; la sensibilité à une charge précise est donc très faible. En conséquence, pour les mouvements des sièges qui doivent assurer une maítrise du couple généré, c'est-à-dire une maítrise de la force maximum à ne pas dépasser pour des raisons de sécurité, il est très difficile, voire impossible, de régler le seuil de sécurité à ne pas dépasser, ce seuil devant, par ailleurs, être suffisamment important pour manoeuvrer le siège en charge nominale, quelle que soit la situation.In addition, it should be noted that the higher the yield the worse the value of the current required to the vacuum actuator is high and fluctuating due to friction; sensitivity to a specific load is therefore very weak. Consequently, for seat movements which must ensure control of the couple generated, that is to say a control of the force maximum not to be exceeded for security reasons, it is very difficult, if not impossible, to adjust the safety threshold not to be exceeded, this threshold in front of, moreover, be important enough to maneuver the seat under nominal load, whatever the situation.

En outre, un mauvais rendement de l'actionneur nécessite une source d'énergie importante, ce qui entraíne un accroissement du poids, du volume, et de l'échauffement du système et, par conséquent, un coût important.In addition, poor actuator performance requires a significant energy source, which causes an increase in weight, volume, and overheating of the system and therefore a cost important.

Par ailleurs, le document DE-A-3 136 653 décrit un système de blocage à manque de courant empêchant, en cas d'urgence, le coulissement involontaire et de grande amplitude d'un siège de véhicule. Un tel système ne permet pas un blocage systématique du siège en position. Autrement dit, il n'assure pas un blocage à résolution infinie.Furthermore, document DE-A-3 136 653 describes an undercurrent blocking system preventing, by emergency, involuntary sliding and large amplitude of a vehicle seat. Such a system does not allow systematic blocking of the seat in position. In other words, it does not block infinite resolution.

Exposé de l'inventionStatement of the invention

L'invention a justement pour but de remédier aux inconvénients des actionneurs décrits précédemment. A cette fin, elle propose un actionneur électrique dont l'irréversibilité (blocage de la cinématique) est indépendante du rendement et obtenue par un bloqueur à manque de courant monté en parallèle sur un moteur et alimenté en énergie par le même dispositif de commande que le moteur.The object of the invention is precisely to remedy to the disadvantages of the actuators described above. To this end, it offers an electric actuator, irreversibility (blocking of kinematics) is independent of the yield and obtained by a blocker lack of current mounted in parallel on a motor and supplied with energy by the same control device than the engine.

De façon plus précise, l'invention concerne un système de modification de la position des éléments mobiles d'un lit ou d'un siège comportant :

  • des moyens de déplacement mécaniques d'un premier élément mobile par rapport à un second élément fixe ou mobile du lit ou du siège,
  • des moyens d'actionnement fixés sur le siège ou le lit pour activer ou bloquer lesdits moyens de déplacement du premier élément,
caractérisé en ce que les moyens d'actionnement et de verrouillage comprennent :
  • un moteur électrique alimenté par un dispositif de commande,
  • une tige entraínée par le moteur,
  • un bloqueur à manque de courant, assurant le blocage de la tige, monté en parallèle avec le moteur électrique et relié au dispositif de commande,
  • un système de transmission assurant l'entraínement des moyens de déplacement du premier élément, à une vitesse déterminée.
More specifically, the invention relates to a system for modifying the position of the movable elements of a bed or of a seat comprising:
  • mechanical displacement means of a first mobile element relative to a second fixed or mobile element of the bed or the seat,
  • actuation means fixed on the seat or the bed to activate or block said means for moving the first element,
characterized in that the actuation and locking means comprise:
  • an electric motor powered by a control device,
  • a rod driven by the engine,
  • an undercurrent blocker, ensuring the blocking of the rod, mounted in parallel with the electric motor and connected to the control device,
  • a transmission system ensuring the drive of the means for moving the first element, at a determined speed.

Avantageusement, le bloqueur à manque de courant est un frein qui bloque la tige lorsqu'il n'est pas alimenté électriquement et qui autorise un mouvement de la tige lorsqu'il est alimenté.Advantageously, the blocker lacking current is a brake that locks the rod when is not electrically powered and which authorizes a movement of the rod when powered.

Selon l'invention, le système de transmission est un réducteur à pignons droits.According to the invention, the transmission system is a straight gear reducer.

Selon un mode de réalisation de l'invention, le moteur est un moteur rotatif entraínant la tige dans un mouvement de rotation.According to one embodiment of the invention, the motor is a rotary motor driving the rod in a rotational movement.

Brève description des dessinsBrief description of the drawings

  • la figure 1 représente schématiquement un fauteuil dont l'inclinaison du dossier est obtenue au moyen du système d'actionnement et de verrouillage de l'invention ; etFigure 1 schematically shows a armchair whose backrest angle is obtained at means of the actuation and locking system of the invention; and
  • la figure 2 représente le schéma fonctionnel du système d'actionnement et de verrouillage de l'invention.Figure 2 shows the block diagram actuation and locking system the invention.
Description détaillée de modes de réalisation de l'inventionDetailed description of embodiments of the invention

La figure 1 représente un exemple de siège à dossier inclinable muni du système de modification et de conservation de l'inclinaison du dossier, conforme à l'invention.Figure 1 shows an example of a seat reclining backrest with modification system and of conservation of the inclination of the back, in accordance with the invention.

Aussi, pour une meilleure compréhension de l'invention, l'invention sera décrite dans son application à un siège à dossier inclinable. Il est à noter, toutefois, que le système de l'invention peut être mis en oeuvre pour un lit ou un siège dont un ou plusieurs éléments mobiles (tête-de-lit, garde-fou, système d'élévation, dossier, appui-tête, repose-jambes, appui-lombaires, etc.) peuvent changer de position.Also, for a better understanding of the invention the invention will be described in its application to a seat with reclining back. He is at note, however, that the system of the invention can be used for a bed or a seat with one or more several mobile elements (headboard, railing, elevation system, backrest, headrest, leg rests, lumbar supports, etc.) may change of position.

Le système de modification de position du dossier, montré sur la figure 1, comporte des moyens de déplacement 3 mécaniques du dossier 1 et des moyens d'actionnement et de verrouillage 4 destinés à actionner et/ou à bloquer ces moyens de déplacement 3.The position modification system of the folder, shown in Figure 1, includes means for 3 mechanical displacement of file 1 and means actuation and locking 4 intended for activate and / or block these displacement means 3.

Autrement dit, ces moyens d'actionnement et de verrouillage, ou actionneur, répondent à une commande de l'utilisateur pour abaisser ou redresser le dossier 1 du siège par rapport à l'assise 2 de ce siège.In other words, these means of actuation and lock, or actuator, respond to a command the user to lower or straighten the backrest 1 of the seat relative to the seat 2 of this seat.

La figure 2 représente, de façon plus détaillée, un exemple d'actionneur de l'invention.Figure 2 shows, more detailed, an example of an actuator of the invention.

Cet actionneur comporte un moteur électrique 5 sur lequel est fixée une tige de transmission 6 et dont le rôle est d'entraíner le mouvement de cette tige 6. Cette transmission peut être, par exemple, une rotation.This actuator comprises an electric motor 5 on which is fixed a transmission rod 6 and of which the role is to cause the movement of this rod 6. This transmission can be, for example, a rotation.

Le moteur 5 est alimenté en énergie par un dispositif de commande 9. Ce dispositif de commande 9 reçoit une tension source Vs transmise au système par la diode CR1.The motor 5 is supplied with energy by a control device 9. This control device 9 receives a source voltage V s transmitted to the system by the diode CR1.

L'actionneur comprend, en outre, un bloqueur à manque de courant 7, alimenté en tension par le dispositif de commande 9. Le rôle de ce bloqueur est d'autoriser le mouvement de la tige 6 lorsqu'il est alimenté par le dispositif de commande 9 et, au contraire, d'interdire le mouvement de la tige 6 lorsqu'il n'est plus alimenté.The actuator further comprises a blocker lack of current 7, supplied with voltage by the control device 9. The role of this blocker is to allow the movement of the rod 6 when it is powered by the control device 9 and, at on the contrary, to prohibit the movement of the rod 6 when it is no longer powered.

Ce bloqueur à manque de courant 7 peut-être, par exemple, un frein à manque de courant ou un électro-aimant.This blocker with lack of current 7 perhaps, for example, an undercurrent brake or a electro magnet.

Selon l'invention, le moteur 5 et le bloqueur 7 sont montés en parallèle et sont alimentés par le même dispositif de commande 9.According to the invention, the motor 5 and the blocker 7 are connected in parallel and are powered by the same control device 9.

D'une part, le dispositif de commande 9 permet d'alimenter simultanément le moteur 5 et le bloqueur 7 par une tension de même valeur (qui peut-être, par exemple, de 24 volts) pour générer le mouvement. D'autre part, le dispositif autorise la coupure simultanée de l'alimentation du moteur 5 et de l'alimentation du bloqueur 7 pour bloquer le mouvement.On the one hand, the control device 9 allows simultaneously supply the motor 5 and the blocker 7 by a voltage of the same value (which perhaps, by example, 24 volts) to generate the movement. On the other hand, the device allows cutting simultaneous supply of motor 5 and the supply of the blocker 7 to block the movement.

Un tel actionneur a une irréversibilité quasi-totale, ce qui signifie que l'irréversibilité de l'actionneur est supérieure à sa capacité dynamique.Such an actuator has an irreversibility almost total, which means that the irreversibility of the actuator is greater than its dynamic capacity.

Le fonctionnement qui vient d'être décrit en ce qui concerne le moteur 5 et le bloqueur à manque de courant 7 est le même pour une cinématique à vide et une cinématique en charge entraínée.The operation which has just been described in this which concerns the motor 5 and the blocker for lack of current 7 is the same for an idle kinematics and kinematics under load.

Dans le cas d'une charge entraínante, c'est la relation entre l'énergie mécanique reçue et l'énergie électrique recueillie qui intervient. Par exemple, pour un moteur à courant continu, la tension présente à ses bornes est proportionnelle à sa vitesse de rotation.In the case of a entraining load, it is the relationship between mechanical energy received and energy electric collected which intervenes. For example, for a DC motor, the voltage present at its terminals is proportional to its speed of rotation.

Le dispositif de commande 9 est commandé par la tension Vs. Il se comporte de façon à maintenir la tension moteur constante et à la même valeur que la tension Vs (quand le moteur devient générateur consécutivement à une charge entraínante ou à l'arrêt du moteur).The control device 9 is controlled by the voltage V s . It behaves so as to keep the motor voltage constant and at the same value as the voltage V s (when the motor becomes generator following a driving load or when the motor stops).

Dans ce cas de charge entraínante, le dispositif de commande 9 agit dès lors que la tension de l'actionneur Va est supérieure à la tension source Vs. A ce moment, le transistor Q1 (qui est, par exemple, un transistor bipolaire) devient « passant » de façon à écouler l'énergie en provenance du moteur devenu générateur ; le transistor Q1 redevient « bloqué » naturellement quand la tension source Vs redevient supérieure à la tension de l'actionneur Va, donc quand le moteur n'est plus générateur.In this case of driving load, the control device 9 acts as soon as the voltage of the actuator V a is greater than the source voltage V s . At this time, the transistor Q1 (which is, for example, a bipolar transistor) becomes "on" so as to drain the energy coming from the motor become generator; the transistor Q1 naturally becomes “blocked” again when the source voltage V s again becomes greater than the voltage of the actuator V a , therefore when the motor is no longer generator.

On notera que la phase d'arrêt du moteur peut être un cas particulier de la charge entraínante ; en effet, la tension source Vs passe à environ 0 Volt, ce qui rend le transistor Q1 passant dès l'instant et tant que Va est supérieure à Vs +0,6 Volt, dans le cas du montage de la figure 2.It will be noted that the engine stopping phase may be a special case of the driving load; indeed, the source voltage V s goes to around 0 Volt, which makes the transistor Q1 passing from the moment and as long as V a is greater than V s +0.6 Volt, in the case of the assembly of FIG. 2 .

Comme montré sur la figure 2, la tige 6 est reliée, à son extrémité, à un système de transmission 8 qui assure l'entraínement des moyens de déplacement mécaniques 3 du dossier 1.As shown in Figure 2, the rod 6 is connected at its end to a transmission system 8 which provides training means of movement mechanical 3 of file 1.

Selon un mode de réalisation de l'invention, ce système de transmission 8 est un réducteur à pignons droits qui a l'avantage d'offrir un rendement maximum et, par conséquent, une diminution de la consommation électrique, du volume et du poids du système d'actionnement par rapport aux systèmes à vis sans fin de l'art antérieur.According to one embodiment of the invention, this transmission system 8 is a gear reducer rights which has the advantage of offering a maximum return and therefore a decrease in consumption system, volume and weight of the system actuation compared to worm gear systems of the prior art.

Cette association « bloqueur à manque de courant 7 et réducteur à pignons droits 8 » permet d'obtenir une bonne irréversibilité de l'actionneur tout en ayant un bon rendement de la transmission ; irréversibilité et rendement peuvent donc être modulés indépendamment l'un de l'autre.This association “blocker for lack of current 7 and straight gear reducer 8 ”allows obtain good irreversibility of the actuator while having a good yield from the transmission; irreversibility and yield can therefore be modulated independently of each other.

En outre, l'invention a l'avantage de permettre une forte diminution du courant d'alimentation à vide et de ses fluctuations par rapport au système à vis sans fin de l'art antérieur, du fait de la suppression des frottements importants dans les engrenages, variant en fonction de la température et des risques de grippage après un arrêt prolongé.In addition, the invention has the advantage of allowing a sharp decrease in the vacuum supply current and its fluctuations compared to the screw system endless of the prior art, due to the deletion significant friction in the gears, varying depending on the temperature and the risks of seizure after a prolonged stop.

De plus, la relation entre l'énergie consommée et le couple délivré est optimisée et non-fluctuante dans le système de l'invention. En particulier, dans le cas d'un moteur à courant continu, la valeur du courant est une image fidèle de l'énergie mécanique transmise.In addition, the relationship between the energy consumed and the torque delivered is optimized and non-fluctuating in the system of the invention. In particular, in the in the case of a DC motor, the value of the current is a faithful image of the mechanical energy transmitted.

Selon un mode de réalisation de l'invention, le système comporte un dispositif mécanique 10, tel qu'un levier, qui permet d'inverser ou de conforter mécaniquement les deux états du bloqueur pour palier à un défaut éventuel du dispositif de commande 9 ou pour assurer l'obtention de positions de sécurité, par exemple, dans le cas de sièges passagers d'un avion, soumis aux règlements de l'Office Fédéral de l'Aéronautique FAA et de l'office des pays membres du JAA (autorités aéronautiques conjointes) qui exigent que ceux-ci soient en position droite lors du décollage et de l'atterrissage de l'avion.According to one embodiment of the invention, the system includes a mechanical device 10, such as a lever, which allows to reverse or comfort mechanically the two states of the blocker for bearing at a possible defect in the control device 9 or for ensuring that security positions are obtained, by example, in the case of passenger seats on an airplane, subject to the regulations of the Federal Office of FAA aeronautics and the office of member countries of the JAA (joint aviation authorities) which require that they are in the right position during takeoff and landing the plane.

Claims (4)

  1. System for modifying the position of the moving parts of a bed or seat comprising:
    mechanical means (3) for the displacement of a first part free to move with respect to a second fixed or moving part of the bed, chair or seat,
    actuation means (4) fixed on the chair, seat or bed to activate or lock the said displacement means of the first part,
    characterized in that the actuating and locking means comprise:
    an electric motor (5) powered by a control device (9),
    a rod (6) driven by the motor,
    a current failure blocking device (7), ensuring irreversibility of the system by blocking the upper rod at its dynamic capacity, connected in parallel with the electric motor and connected to the control device (9),
    a transmission system (8) driving the displacement means of the first part at a predetermined speed.
  2. System according to claim 1, characterized in that the current failure blocking device is a brake that blocks rod (6) when it is no longer electrically powered and which enables movement on the rod when it is powered.
  3. System according to claim 1 or 2, characterized in that the transmission system (8) is a reduction gear with straight gear wheels.
  4. System according to any one of claims 1 to 3, characterized in that the motor is a rotary motor driving rod (6) in a rotational movement.
EP99911854A 1998-04-02 1999-04-01 Actuating and locking system for positioning a bed or seat mobile elements Expired - Lifetime EP1066169B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9804111 1998-04-02
FR9804111A FR2776903B1 (en) 1998-04-02 1998-04-02 ACTUATION AND LOCKING SYSTEM FOR POSITIONING MOVABLE ELEMENTS OF A BED OR SEAT
PCT/FR1999/000759 WO1999051126A2 (en) 1998-04-02 1999-04-01 Actuating and locking system for positioning a bed or seat mobile elements

Publications (2)

Publication Number Publication Date
EP1066169A2 EP1066169A2 (en) 2001-01-10
EP1066169B1 true EP1066169B1 (en) 2003-07-02

Family

ID=9524785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99911854A Expired - Lifetime EP1066169B1 (en) 1998-04-02 1999-04-01 Actuating and locking system for positioning a bed or seat mobile elements

Country Status (10)

Country Link
US (1) US6623077B1 (en)
EP (1) EP1066169B1 (en)
JP (1) JP2002510513A (en)
BR (1) BR9909305A (en)
CA (1) CA2327390C (en)
DE (1) DE69909270T2 (en)
ES (1) ES2203094T3 (en)
FR (1) FR2776903B1 (en)
TW (1) TW401362B (en)
WO (1) WO1999051126A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2972873A1 (en) * 2011-03-17 2012-09-21 Pga Electronic Actuation system for positioning movable unit i.e. backrest, of seat in e.g. car, has electronic switches and inverter controller cutting fixed voltage based on reference signal to form pulse signal

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1432343A (en) * 2002-01-17 2003-07-30 英属维京群岛商冠亚生技控股集团股份有限公司 Rotary controlled vertebra fixture
US20050088023A1 (en) * 2003-10-22 2005-04-28 Tomas Hinojos In-line seat recliner assembly
DE10356614B4 (en) * 2003-12-01 2009-04-02 Johnson Controls Gmbh Motorized seat for turning the back and procedures
DE102004025507A1 (en) * 2004-05-21 2005-12-15 Johnson Controls Gmbh Automotive Systems Group vehicle seat
DE202004008714U1 (en) * 2004-05-28 2004-07-29 Dewert Antriebs- Und Systemtechnik Gmbh & Co Kg Brake device for an electric drive motor and furniture
DE102005001875B4 (en) * 2005-01-14 2007-05-16 Deon Ag armchair
DE102005001877A1 (en) * 2005-01-14 2006-07-27 Deon Ag Furniture, in particular seating
DE102005057623B3 (en) * 2005-12-02 2007-05-10 Keiper Gmbh & Co.Kg Motor vehicle seat, has fitting comprising locking unit and counter unit that work together with locking unit, and control device determining relative position of locking and counter units to check suitable orientation for locking fitting
JP4985744B2 (en) * 2009-10-28 2012-07-25 株式会社今仙電機製作所 Sheet device
US20120060290A1 (en) * 2010-09-09 2012-03-15 Midmark Corporation Brushless dc motor braking for a barrier free medical table
DE102012212140B4 (en) * 2012-04-20 2020-03-19 Johnson Controls Gmbh Braking device for a directly electromechanically actuated planetary gear arrangement of a seat adjustment mechanism and method for operating a braking device
FR3001782B1 (en) * 2013-02-07 2016-08-12 Precilec ACTUATOR AND CABIN SEAT COMPRISING SUCH ACTUATOR
CA2979047A1 (en) * 2015-03-10 2016-09-15 Pride Mobility Products Corp. Lift chair control device
US10292500B2 (en) 2016-04-21 2019-05-21 L&P Property Management Company Quick-exit assembly for reclining furniture
JP6780454B2 (en) * 2016-11-09 2020-11-04 トヨタ紡織株式会社 Back frame for vehicle seat
TWI803397B (en) * 2022-07-21 2023-05-21 施權航 electric bed

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3132235A1 (en) * 1981-08-14 1983-11-10 Brose Fahrzeugteile GmbH & Co KG, 8630 Coburg SEAT ADJUSTMENT, IN PARTICULAR FOR A MOTOR VEHICLE SEAT
DE3136653A1 (en) * 1981-09-16 1983-03-03 Daimler-Benz Ag, 7000 Stuttgart Motor-vehicle seat which is designed such that it can be displaced longitudinally by means of running and guide rails arranged in pairs
US4759587A (en) 1987-08-27 1988-07-26 P. L. Porter Company Manual override for power recliner seat screw jack
US5002172A (en) * 1989-06-07 1991-03-26 P. L. Porter Company Electrically actuated seat actuator and lock
US4962963A (en) * 1989-07-24 1990-10-16 Fisher Dynamics Corporation Power linear seat recliner
US5052752A (en) * 1990-06-21 1991-10-01 Fisher Dynamics Corporation Infinitely adjustable linear seat recliner
US5248184A (en) * 1991-12-11 1993-09-28 Itt Corporation Seat back inertia latch and sector system
FR2695883B1 (en) * 1992-09-21 1994-12-09 Ecia Equip Composants Ind Auto Actuator for the implementation of a slide and its application to a vehicle seat.
US5435625A (en) * 1993-08-20 1995-07-25 Hoover Universal, Inc. Hydraulically controlled seat adjuster and recliner mechanisms for vehicle seats
US5575531A (en) * 1993-12-15 1996-11-19 Itt Corporation Vehicle power seat adjuster with end driven lead screw actuation
US5542744A (en) * 1994-02-23 1996-08-06 C.E.B. Enterprises, Inc. Non-adjustable linear drive for articulated furniture
US6055877A (en) * 1998-06-12 2000-05-02 Buehler Products, Inc. Power seat track motor assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2972873A1 (en) * 2011-03-17 2012-09-21 Pga Electronic Actuation system for positioning movable unit i.e. backrest, of seat in e.g. car, has electronic switches and inverter controller cutting fixed voltage based on reference signal to form pulse signal

Also Published As

Publication number Publication date
FR2776903A1 (en) 1999-10-08
CA2327390C (en) 2007-06-19
ES2203094T3 (en) 2004-04-01
DE69909270D1 (en) 2003-08-07
CA2327390A1 (en) 1999-10-14
BR9909305A (en) 2000-11-21
EP1066169A2 (en) 2001-01-10
US6623077B1 (en) 2003-09-23
WO1999051126A2 (en) 1999-10-14
DE69909270T2 (en) 2004-05-27
FR2776903B1 (en) 2000-06-16
WO1999051126A3 (en) 1999-12-09
JP2002510513A (en) 2002-04-09
TW401362B (en) 2000-08-11

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