EP1079714A1 - Seat with tilting seating surface - Google Patents

Seat with tilting seating surface

Info

Publication number
EP1079714A1
EP1079714A1 EP00910918A EP00910918A EP1079714A1 EP 1079714 A1 EP1079714 A1 EP 1079714A1 EP 00910918 A EP00910918 A EP 00910918A EP 00910918 A EP00910918 A EP 00910918A EP 1079714 A1 EP1079714 A1 EP 1079714A1
Authority
EP
European Patent Office
Prior art keywords
seat
base
horizontal axis
fixed
seat according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00910918A
Other languages
German (de)
French (fr)
Other versions
EP1079714B1 (en
Inventor
Bernard Vallee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delagrave SA
Original Assignee
Delagrave SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
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Application filed by Delagrave SA filed Critical Delagrave SA
Publication of EP1079714A1 publication Critical patent/EP1079714A1/en
Application granted granted Critical
Publication of EP1079714B1 publication Critical patent/EP1079714B1/en
Anticipated expiration legal-status Critical
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/56—Parts or details of tipping-up chairs, e.g. of theatre chairs
    • 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
    • A47C1/12—Theatre, auditorium, or similar chairs
    • A47C1/121—Theatre, auditorium, or similar chairs having tipping-up seats

Definitions

  • the present invention relates to seats requiring a seat lift for dimensional and / or normative constraints, in particular intended to equip rooms receiving the public
  • seats with a tilting seat have at least one base having a substantially longitudinal axis and to which a backrest is optionally fixed, and with respect to which a horizontal axis is determined, the seat comprising a first part projecting forward relative to the horizontal axis and essentially intended to receive the seat of a user, and a second part projecting towards the base.
  • a tilting seat must be raised on its own when the seat is not in use, imperatively and unwavering over time to remain in compliance with the rules and standards for the layout of rooms open to the public and, in particular, to comply with safety standards.
  • the tilting seat must perform an automatic angular rotation movement of the order of 80 to 110 degrees around the axis horizontal above when the seat so equipped is not used, so as to adopt a substantially vertical position.
  • either the second part of the seat is provided with a counterweight, so as to overcome the forces of gravity generated by the first part, or a spring is added, for example a spiral spring on the horizontal axis or a coil spring connecting one of the parts of the seat to the base, or even a metal leaf spring actuated by an offset shaft, so that the spring is banded when the seat is opened and restores the stored energy to close the seat when the user stands up.
  • a spring for example a spiral spring on the horizontal axis or a coil spring connecting one of the parts of the seat to the base, or even a metal leaf spring actuated by an offset shaft, so that the spring is banded when the seat is opened and restores the stored energy to close the seat when the user stands up.
  • a set of elastic stops for example rubber, is provided to brake and stop the angular rotational movement of the seat at the end of the stroke.
  • This set of stops necessarily results in an increased thickness of the seat at the closing mechanism, which results in a residual opening of the seat and therefore in additional congestion of the seat when the seat is raised.
  • Inertia lifting remains, in any case, soft and risks not being carried out correctly due to a simple untimely friction of the seat or of friction at the level of the axis of rotation.
  • the various lifting spring means are, for their part, subjected to mechanical fatigue, since the spring remains in tension when the seat is open in the seat use position. This results in relatively short durability and significant maintenance of each seat to regularly change the spring means. Obviously, it also results from such means a substantial acceleration of the angular movement of the seat which then strikes the end stops at full angular speed. The seat then comes to knock at the end of the race against the stops provided for this purpose, which causes an unacceptable sound click therefore, for example in an amphitheater thus equipped, that the speaker has not finished his conference or that the show continues.
  • each seat in the raised position is also a function of the wear of the stops, and therefore of the use of each seat. This results in a different residual opening from one seat to another, and quickly a misalignment of the raised seats of the same row of seats. This is unsightly and can lead to a problem with respect to the safety standards determining the required width of the corridor between the seat with raised seat and the tablet or the seat facing it.
  • these seats are, as we have just said, subject to a number of very strict standards, since they are used in places open to the public, and, among these, the durability factor is very important .
  • durability factor is meant the number of opening-closing cycles before significant degradation of the residual opening of the seat.
  • Document US-A-3 594 037 describes an airplane seat for a stewardess comprising an actuating cylinder, but the seat of which passes from vertical to horizontal and vice versa along an axis of rotation which is not materialized. essentially mobile. The backrest accompanies the seat in its movement and is therefore not fixed. The seat is referenced to the ground, since the problem of steps of different heights, as in an amphitheater, does not arise in an airplane.
  • the invention is situated in this context and has the primary purpose of overcoming the aforementioned drawbacks, while respecting the standards in force.
  • the invention also aims to significantly increase the durability factor, that is to say the number of opening-closing cycles of the seat without degradation, so as to reduce the maintenance obligations of the seats.
  • the invention also aims to remove the obligation of a set of stops fitted to each seat to avoid any additional residual opening due to the wear of these stops.
  • the base of the seat encloses a gas spring, one end of which is fixed to the base and the other end is fixed to part of the seat.
  • the axis of rotation of the seat according to the invention is fixed, and the seat is referenced relative to the base and not relative to the ground.
  • the backrest is fixed.
  • the gas cylinder makes it possible to overcome the problems of angular acceleration and squeaks inherent in spring or gravity systems, and, therefore, allows a return to speed substantially. constant and controlled seat.
  • European patent EP-A-0 269 528 describes a bed, certain elements of which are adjustable by means of a jack.
  • the jack is a self-locking device with compensation mass that can take into account the weight of the person resting on this bed.
  • Patent WO-A-95/14412 also describes a bed with back and bust and leg support comprising a lockable pneumatic cylinder for blocking in the chosen position.
  • the present invention therefore relates to a seat with a tilting seat around a horizontal axis, designed in particular to equip halls open to the public, such as amphitheatres and / or performance halls, comprising at least one base having a substantially longitudinal axis and to which a backrest is optionally fixed, and with respect to which a horizontal axis is determined, the seat comprising a first part projecting forward with respect to the horizontal tax, and a second part projecting from the horizontal axis towards the base .
  • the base encloses a gas spring, one end of which is fixed to the base and the other end is fixed to the second part of the seat.
  • the distance between the horizontal axis and the longitudinal axis of the base is between 2 and 15 cm approximately.
  • the horizontal axis is carried by an intermediate piece projecting from the longitudinal axis of the base to which it is fixed.
  • an opening is made in the base opposite the second part of the seat, so as to at least partially accommodate this second part.
  • the horizontal axis of rotation of the seat is carried by an arm mounted free in rotation around a first of its ends fixed to the base.
  • Figures 1 and 2 schematically show in section along the longitudinal axis of the base an amphitheater seat according to the invention, respectively with the seat open and with the seat raised;
  • Figure 3 schematically illustrates a method of fixing the seat to the base;
  • Figure 4 shows schematically in longitudinal section a seat according to the invention;
  • Figure 5 illustrates in more detail the connection between the seat and the base;
  • Figures 6 and 7 illustrate another embodiment of a seat according to the invention, in particular for equipping a performance hall, according to which the rear part of the seat is lowered to determine the open or use position of the seat ;
  • Figure 8 shows schematically in rear view a seat according to the invention, in particular for equipping a theater, using two legs each being provided with a lifting mechanism, and
  • Figure 9 illustrates the implementation of the invention for the realization of an armchair for a theater or equivalent.
  • a seat with tilting seat of the type comprising a single base 12, for example of cylindrical shape, having an axis longitudinal 14 at an angle determined ⁇ with the vertical.
  • This seat illustrates a first embodiment given by way of illustration. Obviously, several other neighboring embodiments can be produced with more or less padding of the seat and the back depending on the type of use of the seat. Likewise, armrests (not shown) can be provided.
  • the angle ⁇ of the base with the vertical between 0 to 15 degrees approximately and, preferably equal to approximately 10 degrees, promotes user comfort, since the base 12 carries a backrest 16 also inclined and recessed relative to at seat 20, with a very ergonomic position. In addition, this inclination also promotes safety since it makes it possible to obtain a seat which, when the seat 20 is raised, does not have any parts projecting from the base, thereby increasing the space made free for the passage in front of the seat. For example, the footprint on the ground can be reduced to only about 13 cm.
  • the raised position of the front part of the seat 20 is the position in which the seat is not used.
  • the seat 20 is fixed to the base 12 by means of an intermediate piece 22 defining a horizontal axis 24 around which the seat 20 will rotate.
  • the distance between this horizontal axis 24 and the longitudinal axis 14 of the base 12 is between 2 and 15 cm approximately, depending on the value chosen for the angle ⁇ .
  • the part 22 also makes it possible to fix the opening angle of the seat 20 and to take up the forces generated by the weight of the user.
  • the seat 20 consists of two parts integral with one another.
  • a first part 32 having, for example a double curve and / or padding, protrudes towards the front of the horizontal axis 24 and is here intended to receive the seat of the user when the seat 20 is open.
  • the second part 30 projects from the horizontal Tax axis 24 towards the base 12 and is connected to the lifting mechanism 40.
  • the length of the part of the second part 30 entering the opening is, of course, less than the diameter of the base 12.
  • this opening 42 it is completely unnecessary for the upper and lower edges of this opening 42 to be provided with rubberized stops or not, since the stop in opening the seat 20 is simply constituted by the end of the intermediate piece 22, as we said previously, while the end of travel stop during closing consists of the lifting mechanism itself.
  • the lifting mechanism 40 is constituted by a conventional gas spring, one end 48 of which is fixed to the base 12, and the other end of which is fixed to the end of the second part
  • Such a gas spring is well known, and there is no need to describe it further here.
  • the essential advantage of using such a jack is that it ensures a rotational movement angular of the seat 20 not presenting an untimely acceleration of the lifting. On the contrary, even, since the expansion of the gas which it contains slows down at the end of the stroke, which allows the seat 20 not to bump into force against the end of stroke stops which are, moreover, omitted here. , which ensures a silent and efficient lifting of the seat 20, or against the seat back.
  • such a gas spring may include a device for taking up wear or play, as well as an additional braking means, both of which are known per se.
  • Figure 3 a variant of the embodiment.
  • the seat 20 is movable relative to this horizontal axis 24.
  • the intermediate piece 22 is constituted by a rail 54 cooperating with a path 56 formed in the lower part of the seat 20 to modify the position of horizontal tax 24 relative to the seat 20 as a function of the opening angle of the seat.
  • the rail 54 may possibly be mounted for rotation relative to the intermediate piece 22 if this proves necessary.
  • the seat according to the invention is in particular intended to equip the amphitheatres. It is known that in the amphitheatres, each row of adjacent seats occupies a determined level 64 separated from the previous and subsequent levels 66 by a noticeable difference in height 62 and often variable. This usually results in a problem that the base of a seat is used to carry the work tablet 60 of the seat located immediately behind it, and that it is therefore necessary to adjust the height of the tablet 60 as a function of the height of the drop 62.
  • This problem is solved with the seat of the invention in that the base 12 is mounted telescopically with a first element 70 which carries the seat 20 and the lifting mechanism 40 while taking up the vertical forces, while a second element 72 carries the subsequent shelf 60. In addition, this second element 72 takes up the horizontal forces generated by the weight of the user by its fixing 74 provided on the upper bearing 66 in the manner of a flying buttress.
  • a seat with liftable seat intended to equip halls receiving the public, such as amphitheatres and concert halls, with the desired advantages, namely silent operation, and simple adaptation to any type of hall , which complies with the safety standards in force, and which does not include any fast-wearing parts.
  • this type of seat makes it possible to significantly increase the surface area of the tablet associated with it due to the small size when projected on the ground when the seat is raised.
  • the tablet 60 can also be, therefore, in particular by its attachment to the base, designed to considerably limit the usual effect of sounding board.
  • FIG. 1 to 5 the lifting mechanism 40 in the upper part of the base 12, it could just as easily be placed in the lower part of the same base 12, with a similar reverse operation.
  • the ascent of the seat cushion according to the invention therefore takes place at a constant and controlled speed, is braked at the end of the race without stops, without significant mechanical aging, with an automatic adjustment of the clearance, without squeaking or squeaking due to the presence of a spring, without rebound or slamming of the seat on the backrest, without free rotation as with a means of lifting by counterweight, and with a factor of durability and resistance over time more than twice that of spring-loaded seats, and in particular conforms to European standard EN 12727 (level 4).
  • FIGS 6 and 7 there is shown respectively in the closed and open positions a seat according to a second embodiment of the invention, according to which the lowered position of the rear part 30 of the seat 20 corresponds to a position d use of the seat.
  • the rotation tax 24 of the seat 20 is carried by an arm 80, one end 84 of which is fixed to the base 12 and around which it is mounted for free rotation.
  • the rear part or second part 30 here rises (instead of descending as in the embodiment shown in Figures 1 to 5), which means that it is the first part 32 of the seat 20 which will descend during of the 'lifting' of the seat.
  • the mechanism always constituted by a gas spring 40, then operates in reverse of that of the mechanism of Figures 1 to 5, and there is no need to describe it here further. It is fixed to the base 12 by its first end 82 which can advantageously but not necessarily be distinct from Tax 84.
  • the other end of the arm 80 opposite its first end 84 and determining rotation tax 24 is slidably mounted in a rail 86 which can be inclined, integral with the seat 20, so as to prevent the seat 20 does not close if a user sits at its end.
  • the arm 80 is mounted in the form of a lever having a fulcrum on its axis 84, Tax 82 connected to the jack 40 being made thus mobile.
  • Tax 82 connected to the jack 40 being made thus mobile.
  • Tax 24 allows the seat to remain open when the user is normally seated.
  • a seat with a liftable seat is therefore thus obtained which has excellent ergonomics and all the essential parameters of which are easily controllable, in particular with regard to the opening and closing of the seat in order to reduce the size and weight of the latter.
  • the base has been described as affecting a substantially cylindrical cross-sectional shape, it is obvious that it could just as easily affect a square or triangular shape in cross-section, or even affect the shape of a T or d 'A U in cross section, the lifting mechanism then being directly accessible without the need to completely disassemble the base, for example to exchange it.
  • this lifting mechanism is and remains inaccessible to the seat user and to his neighbors to avoid any pinch-type accident and any untimely deterioration.
  • the base has been described as unique and centered in Tax symmetry of the seat, but it is obvious that the base can be offset from this axis of symmetry, for example for aesthetic reasons, or be made up of two parallel elements from which Tun receives or both receive a lifting mechanism as shown schematically in Figure 8.
  • the invention can easily be adapted so that the seat lifting mechanism is located inside the backrest itself, so as to dissociate the seat itself from its base in order to dissociate the problems linked to the legs of those linked to the seat.
  • the seat has a padded part 92; it is the same for the backrest which consists of a hard plate 98, for example of wood, and padding 96.
  • the backrest is fixed to the base 12 by means of a fork 100 and armrests 94 are provided on either side of the seat.
  • the lifting mechanism 40 of the seat is here housed between the hard plate 98 and the padding 96 of the backrest. This gives a very aesthetic chair with all of the above advantages.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Seats For Vehicles (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
  • Special Chairs (AREA)

Abstract

The invention concerns a seat with a seating surface tilting about a horizontal axis (24) designed in particular to equip halls for accommodating spectators such as conference halls and/or entertainment halls, comprising at least an underframe with a substantially longitudinal axis (14) and whereto is optionally fixed a back portion (16), and with respect to which a horizontal axis (24) is determined, the seating surface (20) comprising a first part (32) projecting forward relative to the horizontal axis (24), and a second part (30) projecting towards the underframe (12). The invention is characterised in that the underframe (12) contains a gas actuator (40) whereof one end (48) is fixed to the underframe (12) and the other end (50) is fixed to the second part (30) of the seating surface (20).

Description

SIEGE A ASSISE BASCULANTE TILTING SEAT
La présente invention concerne les sièges nécessitant un relevage de l'assise pour des contraintes dimensionnelles et/ou normatives, notamment destinés à équiper les salles recevant du publicThe present invention relates to seats requiring a seat lift for dimensional and / or normative constraints, in particular intended to equip rooms receiving the public
(amphithéâtres, cinémas, salles de spectacle, salles de conférence, théâtres, salles polyvalentes, etc.).(amphitheatres, cinemas, performance halls, conference rooms, theaters, multipurpose rooms, etc.).
De façon conventionnelle, les sièges à assise basculante comportent au moins un piétement présentant un axe sensiblement longitudinal et auquel est éventuellement fixé un dossier, et par rapport auquel est déterminé un axe horizontal, l'assise comprenant une première partie faisant saillie vers l'avant par rapport à l'axe horizontal et essentiellement destinée à recevoir le séant d'un utilisateur, et une deuxième partie faisant saillie vers le piétement.Conventionally, seats with a tilting seat have at least one base having a substantially longitudinal axis and to which a backrest is optionally fixed, and with respect to which a horizontal axis is determined, the seat comprising a first part projecting forward relative to the horizontal axis and essentially intended to receive the seat of a user, and a second part projecting towards the base.
Comme on le sait, une assise basculante doit se relever seule lorsque le siège n'est pas utilisé et ce, de façon impérative et indéfectible dans le temps pour rester en conformité avec les règles et normes d'aménagement des salles recevant du public et, notamment, pour respecter les normes de sécurité.As we know, a tilting seat must be raised on its own when the seat is not in use, imperatively and unwavering over time to remain in compliance with the rules and standards for the layout of rooms open to the public and, in particular, to comply with safety standards.
L'assise basculante doit effectuer un mouvement automatique de rotation angulaire de l'ordre de 80 à 110 degrés autour de l'axe horizontal précité lorsque le siège ainsi équipé n'est pas utilisé, de manière à adopter une position sensiblement verticale.The tilting seat must perform an automatic angular rotation movement of the order of 80 to 110 degrees around the axis horizontal above when the seat so equipped is not used, so as to adopt a substantially vertical position.
A cet effet, soit la deuxième partie de l'assise est pourvue d'un contre-poids, de manière à vaincre les forces de gravité engendrées par la première partie, soit on adjoint un ressort, par exemple un ressort en spirale sur l'axe horizontal ou un ressort à boudin reliant l'une des parties de l'assise au piétement, ou même un ressort à lame métallique actionné par un arbre désaxé, de telle manière que le ressort soit bandé lors de l'ouverture de l'assise et restitue l'énergie emmagasinée pour refermer l'assise lorsque l'utilisateur se lève.For this purpose, either the second part of the seat is provided with a counterweight, so as to overcome the forces of gravity generated by the first part, or a spring is added, for example a spiral spring on the horizontal axis or a coil spring connecting one of the parts of the seat to the base, or even a metal leaf spring actuated by an offset shaft, so that the spring is banded when the seat is opened and restores the stored energy to close the seat when the user stands up.
Dans tous les cas, on prévoit un jeu de butées élastiques, par exemple en caoutchouc, pour freiner et arrêter le mouvement de rotation angulaire de l'assise en fin de course. Ce jeu de butées entraîne nécessairement une surépaisseur du siège au niveau du mécanisme de fermeture, ce qui se traduit par une ouverture résiduelle de l'assise et donc par un encombrement additionnel du siège lorsque l'assise est relevée.In all cases, a set of elastic stops, for example rubber, is provided to brake and stop the angular rotational movement of the seat at the end of the stroke. This set of stops necessarily results in an increased thickness of the seat at the closing mechanism, which results in a residual opening of the seat and therefore in additional congestion of the seat when the seat is raised.
Un relevage par inertie reste, de toute façon, mou et risque de ne pas s'effectuer correctement du fait d'un simple frottement inopportun de l'assise ou d'un frottement au niveau de l'axe de rotation.Inertia lifting remains, in any case, soft and risks not being carried out correctly due to a simple untimely friction of the seat or of friction at the level of the axis of rotation.
Les différents moyens à ressort de relevage sont, pour leur part, soumis à une fatigue mécanique, puisque le ressort reste en tension lorsque l'assise est ouverte en position d'utilisation du siège. Il en résulte une durabilité relativement courte et une maintenance importante de chaque siège pour changer régulièrement les moyens à ressort. De façon évidente, il résulte, en outre, de tels moyens une accélération substantielle du mouvement angulaire de l'assise qui vient alors heurter à pleine vitesse angulaire les butées de fin de course. L'assise vient alors cogner en bout de course contre les butées prévues à cet effet, ce qui provoque un claquement sonore inacceptable dès lors, par exemple dans un amphithéâtre ainsi équipé, que le conférencier n'a pas fini sa conférence ou que le spectacle se poursuit.The various lifting spring means are, for their part, subjected to mechanical fatigue, since the spring remains in tension when the seat is open in the seat use position. This results in relatively short durability and significant maintenance of each seat to regularly change the spring means. Obviously, it also results from such means a substantial acceleration of the angular movement of the seat which then strikes the end stops at full angular speed. The seat then comes to knock at the end of the race against the stops provided for this purpose, which causes an unacceptable sound click therefore, for example in an amphitheater thus equipped, that the speaker has not finished his conference or that the show continues.
En outre, l'arrivée à grande vitesse angulaire de l'assise sur les butées élastiques entraîne une usure importante de ces dernières, et celles-ci constituent dès lors des pièces d'usure qu'il faut changer régulièrement pour qu'elles présentent des caractéristiques sensiblement constantes.In addition, the arrival at high angular speed of the seat on the elastic stops causes significant wear of the latter, and these constitute therefore wearing parts which must be changed regularly so that they have substantially constant characteristics.
Par ailleurs, l'ouverture résiduelle de chaque assise en position relevée est également fonction de l'usure des butées, et donc de l'utilisation de chaque siège. Il en résulte une ouverture résiduelle différente d'un siège à l'autre, et rapidement un désalignement des assises relevées d'une même rangée de sièges. Ce qui est inesthétique et peut entraîner un problème quant au respect des normes de sécurité déterminant la largeur requise du couloir entre le siège à assise relevée et la tablette ou le siège qui lui fait face.Furthermore, the residual opening of each seat in the raised position is also a function of the wear of the stops, and therefore of the use of each seat. This results in a different residual opening from one seat to another, and quickly a misalignment of the raised seats of the same row of seats. This is unsightly and can lead to a problem with respect to the safety standards determining the required width of the corridor between the seat with raised seat and the tablet or the seat facing it.
Par ailleurs, ces sièges sont, comme on vient de le dire, soumis à un certain nombre de normes très contraignantes, puisqu'ils sont utilisés dans des lieux recevant du public, et, parmi celles-ci, le facteur de durabilité est très important. Par facteur de durabilité, on entend le nombre de cycles d'ouverture-fermeture avant dégradation sensible de l'ouverture résiduelle de l'assise. Ainsi, on sait qu'un siège équipé d'un moyen de relevage de l'assise à ressort ne supporte généralement pas plus de 40000 cycles environ avant maintenance ou échange du moyen de relevage.Furthermore, these seats are, as we have just said, subject to a number of very strict standards, since they are used in places open to the public, and, among these, the durability factor is very important . By durability factor is meant the number of opening-closing cycles before significant degradation of the residual opening of the seat. Thus, it is known that a seat equipped with a means of lifting the spring seat generally does not withstand more than 40,000 cycles approximately before maintenance or replacement of the lifting means.
Le document US-A-3 594 037 décrit un siège d'avion pour hôtesse de l'air comportant un vérin de manoeuvre, mais dont l'assise passe de la verticale à l'horizontale et vice versa selon un axe de rotation non matérialisé essentiellement mobile. Le dossier accompagne l'assise dans son mouvement et n'est donc pas fixe. Le siège est référencé par rapport au sol, puisque le problème de marches de hauteurs différentes, comme dans un amphithéâtre, ne se pose pas dans un avion.Document US-A-3 594 037 describes an airplane seat for a stewardess comprising an actuating cylinder, but the seat of which passes from vertical to horizontal and vice versa along an axis of rotation which is not materialized. essentially mobile. The backrest accompanies the seat in its movement and is therefore not fixed. The seat is referenced to the ground, since the problem of steps of different heights, as in an amphitheater, does not arise in an airplane.
L'invention se situe dans ce contexte et a pour premier but d'obvier aux inconvénients précités, tout en respectant les normes en vigueur.The invention is situated in this context and has the primary purpose of overcoming the aforementioned drawbacks, while respecting the standards in force.
L'invention a également pour but d'augmenter sensiblement le facteur de durabilité, c'est à dire le nombre de cycles d'ouverture-fermeture de l'assise sans dégradation, de manière à réduire les obligations de maintenance des sièges.The invention also aims to significantly increase the durability factor, that is to say the number of opening-closing cycles of the seat without degradation, so as to reduce the maintenance obligations of the seats.
L'invention a également pour but de supprimer l'obligation d'un jeu de butées équipant chaque siège pour éviter toute ouverture résiduelle additionnelle due à l'usure de ces butées.The invention also aims to remove the obligation of a set of stops fitted to each seat to avoid any additional residual opening due to the wear of these stops.
Selon l'invention, le piétement du siège enferme un vérin à gaz dont une extrémité est fixée au piétement et l'autre extrémité est fixée à une partie de l'assise.According to the invention, the base of the seat encloses a gas spring, one end of which is fixed to the base and the other end is fixed to part of the seat.
L'axe de rotation du siège selon l'invention est fixe, et le siège est référencé par rapport au piétement et non par rapport au sol. En outre, le dossier est fixe. Comme l'homme de l'art le comprendra aisément, le vérin à gaz permet de s'affranchir des problèmes de l'accélération angulaire et de couinements inhérents aux systèmes à ressort ou à gravité, et, donc, permet un retour à vitesse sensiblement constante et contrôlée de l'assise.The axis of rotation of the seat according to the invention is fixed, and the seat is referenced relative to the base and not relative to the ground. In addition, the backrest is fixed. As those skilled in the art will readily understand, the gas cylinder makes it possible to overcome the problems of angular acceleration and squeaks inherent in spring or gravity systems, and, therefore, allows a return to speed substantially. constant and controlled seat.
La mise en oeuvre d'un vérin pneumatique pour modifier l'assise d'une surface est cependant bien connue en tant que tel dans l'art.The use of a pneumatic cylinder to modify the seat of a surface is however well known as such in the art.
Ainsi, le brevet américain US-A-4 534 594 décrit-il un fauteuil d'avion dont la partie repose-jambe est commandée par un vérin pneumatique.Thus, American patent US Pat. No. 4,534,594 describes an airplane chair, the leg rest part of which is controlled by a pneumatic cylinder.
Le brevet européen EP-A-0 269 528 décrit un lit dont certains éléments sont réglables au moyen d'un vérin. Le vérin est un dispositif autobloquant à masse de compensation pouvant tenir compte du poids de la personne reposant sur ce lit.European patent EP-A-0 269 528 describes a bed, certain elements of which are adjustable by means of a jack. The jack is a self-locking device with compensation mass that can take into account the weight of the person resting on this bed.
Le brevet W0-A-95/14412 décrit également un lit à relève- buste et relève-jambe comprenant un vérin pneumatique verrouillable pour un blocage en la position choisie.Patent WO-A-95/14412 also describes a bed with back and bust and leg support comprising a lockable pneumatic cylinder for blocking in the chosen position.
On connait également les dispositifs à vérins à gaz sous pression permettant un relèvement assisté de la porte du coffre ou d'un hayon d'un véhicule automobile.There are also known devices with pressurized gas cylinders for assisted lifting of the trunk door or of a tailgate of a motor vehicle.
Les problèmes posés ici, à savoir le relèvement en douceur (à vitesse de rotation sensiblement constante) de l'assise d'un siège pour éviter les bruits parasites de fin de course, et un affranchissement par rapport aux questions d'usure prématurée de certains composants pour réduire les obligations de maintenance des sièges, ne trouvent pas de solution suggérée dans les documents précités.The problems posed here, namely the gentle raising (at a substantially constant speed) of the seat cushion to avoid parasitic noise at the end of the race, and postage in relation to the questions of premature wear of certain components to reduce the maintenance obligations of the seats, do not find a solution suggested in the aforementioned documents.
La présente invention concerne donc un siège à assise basculante autour d'un axe horizontal, prévu notamment pour équiper des salles recevant du public, telles que des amphithéâtres et/ou des salles de spectacle, comportant au moins un piétement présentant un axe sensiblement longitudinal et auquel est éventuellement fixé un dossier, et par rapport auquel est déterminé un axe horizontal, l'assise comprenant une première partie faisant saillie vers l'avant par rapport à Taxe horizontal, et une deuxième partie faisant saillie de l'axe horizontal vers le piétement.The present invention therefore relates to a seat with a tilting seat around a horizontal axis, designed in particular to equip halls open to the public, such as amphitheatres and / or performance halls, comprising at least one base having a substantially longitudinal axis and to which a backrest is optionally fixed, and with respect to which a horizontal axis is determined, the seat comprising a first part projecting forward with respect to the horizontal tax, and a second part projecting from the horizontal axis towards the base .
Selon l'invention, le piétement enferme un vérin à gaz dont une extrémité est fixée au piétement et l'autre extrémité est fixée à la deuxième partie de l'assise.According to the invention, the base encloses a gas spring, one end of which is fixed to the base and the other end is fixed to the second part of the seat.
De préférence, la distance entre l'axe horizontal et l'axe longitudinal du piétement est comprise entre 2 et 15 cm environ.Preferably, the distance between the horizontal axis and the longitudinal axis of the base is between 2 and 15 cm approximately.
L'axe horizontal est porté par une pièce intermédiaire faisant saillie de l'axe longitudinal du piétement auquel elle est fixée.The horizontal axis is carried by an intermediate piece projecting from the longitudinal axis of the base to which it is fixed.
De façon avantageuse, une ouverture est pratiquée dans le piétement en regard de la deuxième partie de l'assise, de manière à accueillir au moins partiellement cette deuxième partie.Advantageously, an opening is made in the base opposite the second part of the seat, so as to at least partially accommodate this second part.
Selon un autre mode de réalisation, l'axe horizontal de rotation de l'assise est porté par un bras monté libre en rotation autour d'une première de ses extrémités fixée au piétement. L'invention sera mieux comprise, et d'autres buts, avantages et caractéristiques de celle-ci apparaîtront plus clairement à la lecture de la description qui suit de modes préférés de réalisation donnés à titre non limitatif et à laquelle trois planches de dessins sont annexées sur lesquelles : les Figures 1 et 2 représentent schématiquement en coupe dans l'axe longitudinal du piétement un siège pour amphithéâtre conforme à l'invention, respectivement avec l'assise ouverte et avec l'assise relevée ; la Figure 3 illustre schématiquement un mode de fixation de l'assise au piétement ; la Figure 4 représente schématiquement en coupe longitudinale un siège conforme à l'invention ; la Figure 5 illustre plus en détails la liaison entre l'assise et le piétement ; les Figures 6 et 7 illustrent un autre mode de réalisation d'un siège conforme à l'invention, notamment pour équiper une salle de spectacles, selon lequel la partie arrière de l'assise est abaissée pour déterminer la position ouverte ou d'utilisation du siège ; la Figure 8 représente schématiquement en vue arrière un siège conforme à l'invention, notamment pour équiper un théâtre, mettant en oeuvre deux piétements chacun étant pourvu d'un mécanisme de relevage, et la Figure 9 illustre la mise en oeuvre de l'invention pour la réalisation d'un fauteuil pour un théâtre ou équivalent.According to another embodiment, the horizontal axis of rotation of the seat is carried by an arm mounted free in rotation around a first of its ends fixed to the base. The invention will be better understood, and other objects, advantages and characteristics thereof will appear more clearly on reading the following description of preferred embodiments given without limitation and to which three drawing plates are appended. in which: Figures 1 and 2 schematically show in section along the longitudinal axis of the base an amphitheater seat according to the invention, respectively with the seat open and with the seat raised; Figure 3 schematically illustrates a method of fixing the seat to the base; Figure 4 shows schematically in longitudinal section a seat according to the invention; Figure 5 illustrates in more detail the connection between the seat and the base; Figures 6 and 7 illustrate another embodiment of a seat according to the invention, in particular for equipping a performance hall, according to which the rear part of the seat is lowered to determine the open or use position of the seat ; Figure 8 shows schematically in rear view a seat according to the invention, in particular for equipping a theater, using two legs each being provided with a lifting mechanism, and Figure 9 illustrates the implementation of the invention for the realization of an armchair for a theater or equivalent.
En référence maintenant aux Figures qui viennent d'être succinctement décrites, et plus particulièrement aux Figures 1 et 2, on a représenté en coupe transversale un siège à assise basculante du type comprenant un piétement unique 12, par exemple de forme cylindrique, présentant un axe longitudinal 14 faisant un angle déterminé β avec la verticale. Ce siège illustre un premier mode de réalisation donné à titre illustratif. Bien évidemment, plusieurs autres modes de réalisation voisins peuvent être réalisés avec plus ou moins de rembourrage de l'assise et du dossier en fonction du type d'utilisation du siège. De même, des accoudoirs (non représentés) peuvent être prévus.Referring now to the Figures which have just been succinctly described, and more particularly to Figures 1 and 2, there is shown in cross section a seat with tilting seat of the type comprising a single base 12, for example of cylindrical shape, having an axis longitudinal 14 at an angle determined β with the vertical. This seat illustrates a first embodiment given by way of illustration. Obviously, several other neighboring embodiments can be produced with more or less padding of the seat and the back depending on the type of use of the seat. Likewise, armrests (not shown) can be provided.
L'angle β du piétement avec la verticale, compris entre 0 à 15 degrés environ et, de préférence égal à 10 degrés environ, favorise le confort de l'utilisateur, puisque le piétement 12 porte un dossier 16 également incliné et en retrait par rapport à l'assise 20, avec une position très ergonomique. En outre, cette inclinaison favorise également la sécurité puisqu'elle permet d'obtenir un siège qui, lorsque l'assise 20 est relevée, ne comporte pas de pièces faisant saillie du piétement, ce qui augmente d'autant l'espace rendu libre pour le passage devant le siège. A titre d'exemple, l'encombrement au sol peut être ainsi réduit à 13 cm seulement environ.The angle β of the base with the vertical, between 0 to 15 degrees approximately and, preferably equal to approximately 10 degrees, promotes user comfort, since the base 12 carries a backrest 16 also inclined and recessed relative to at seat 20, with a very ergonomic position. In addition, this inclination also promotes safety since it makes it possible to obtain a seat which, when the seat 20 is raised, does not have any parts projecting from the base, thereby increasing the space made free for the passage in front of the seat. For example, the footprint on the ground can be reduced to only about 13 cm.
Dans l'exemple représenté sur la Figure 2, la position relevée de la partie avant de l'assise 20 est la position dans laquelle le siège n'est pas utilisé.In the example shown in Figure 2, the raised position of the front part of the seat 20 is the position in which the seat is not used.
L'assise 20 est fixée au piétement 12 au moyen d'une pièce intermédiaire 22 déterminant un axe horizontal 24 autour duquel va tourner l'assise 20. La distance entre cet axe horizontal 24 et l'axe longitudinal 14 du piétement 12 est comprise entre 2 et 15 cm environ, en fonction de la valeur choisie pour l'angle β.The seat 20 is fixed to the base 12 by means of an intermediate piece 22 defining a horizontal axis 24 around which the seat 20 will rotate. The distance between this horizontal axis 24 and the longitudinal axis 14 of the base 12 is between 2 and 15 cm approximately, depending on the value chosen for the angle β.
La pièce 22 permet également de fixer l'angle d'ouverture de l'assise 20 et de reprendre les forces engendrées par le poids de l'utilisateur. L'assise 20 est constituée de deux parties solidaires l'une de l'autre. Une première partie 32 présentant, par exemple un double galbe et/ou un rembourrage, fait saillie vers l'avant de l'axe horizontal 24 et est ici destinée à recevoir le séant de l'utilisateur lorsque l'assise 20 est ouverte. La deuxième partie 30 fait saillie de l'axe Taxe horizontal 24 vers le piétement 12 et est connectée au mécanisme de relevage 40.The part 22 also makes it possible to fix the opening angle of the seat 20 and to take up the forces generated by the weight of the user. The seat 20 consists of two parts integral with one another. A first part 32 having, for example a double curve and / or padding, protrudes towards the front of the horizontal axis 24 and is here intended to receive the seat of the user when the seat 20 is open. The second part 30 projects from the horizontal Tax axis 24 towards the base 12 and is connected to the lifting mechanism 40.
Comme on le voit mieux sur la Figure 5, la deuxième partieAs seen better in Figure 5, the second part
30 de l'assise 20 fait saillie à l'intérieur du piétement 12 en traversant une ouverture 42 pratiquée dans ce dernier. La longueur de la partie de la deuxième partie 30 pénétrant dans l'ouverture est, bien sûr, inférieure au diamètre du piétement 12.30 of the seat 20 projects inside the base 12 through an opening 42 made in the latter. The length of the part of the second part 30 entering the opening is, of course, less than the diameter of the base 12.
Comme l'homme de l'art le comprendra, il est totalement inutile que les bords supérieur et inférieur de cette ouverture 42 soient pourvus de butées caoutchoutées ou non, puisque la butée en ouverture de l'assise 20 est simplement constituée par l'extrémité de la pièce intermédiaire 22, comme on Ta dit précédemment, tandis que la butée de fin de course en fermeture est constituée par le mécanisme de relevage lui-même.As those skilled in the art will understand, it is completely unnecessary for the upper and lower edges of this opening 42 to be provided with rubberized stops or not, since the stop in opening the seat 20 is simply constituted by the end of the intermediate piece 22, as we said previously, while the end of travel stop during closing consists of the lifting mechanism itself.
Le mécanisme de relevage 40 est constitué par un vérin à gaz conventionnel, dont une extrémité 48 est fixée au piétement 12, et dont l'autre extrémité 50 est fixé à l'extrémité de la deuxième partieThe lifting mechanism 40 is constituted by a conventional gas spring, one end 48 of which is fixed to the base 12, and the other end of which is fixed to the end of the second part
30 de l'assise 20, sur lequel il agit pour relever l'assise à la manière d'un levier.30 of the seat 20, on which it acts to raise the seat in the manner of a lever.
Un tel vérin à gaz est bien connu, et il est inutile d'en décrire plus avant le fonctionnement ici. L'avantage essentiel de l'utilisation d'un tel vérin est qu'il assure un mouvement de rotation angulaire de l'assise 20 ne présentant pas une accélération inopportune du relevage. Au contraire même, puisque la détente du gaz qu'il contient ralentit en fin de course, ce qui permet à l'assise 20 de ne pas venir cogner en force contre des butées de fin de course qui sont, d'ailleurs, omises ici, ce qui assure un relevage silencieux et efficace de l'assise 20, ou contre le dossier du siège.Such a gas spring is well known, and there is no need to describe it further here. The essential advantage of using such a jack is that it ensures a rotational movement angular of the seat 20 not presenting an untimely acceleration of the lifting. On the contrary, even, since the expansion of the gas which it contains slows down at the end of the stroke, which allows the seat 20 not to bump into force against the end of stroke stops which are, moreover, omitted here. , which ensures a silent and efficient lifting of the seat 20, or against the seat back.
En outre, un tel vérin à gaz peut comporter un dispositif de rattrapage d'usure ou de jeu, ainsi qu'un moyen de freinage additionnel, tout deux étant connus en soi.In addition, such a gas spring may include a device for taking up wear or play, as well as an additional braking means, both of which are known per se.
On a représenté sur la Figure 3 une variante du mode de réalisation. Ici, si Taxe horizontal 24 est fixe par rapport au piétement 12, l'assise 20 est mobile par rapport à cet axe horizontal 24. Comme on le voit sur la Figure 3 qui montre, en coupe faciale, la jonction de la pièce intermédiaire 22 et de l'assise 20, la pièce intermédiaire 22 est constituée par un rail 54 coopérant avec un chemin 56 pratiqué dans la partie inférieure de l'assise 20 pour modifier la position de Taxe horizontal 24 par rapport à l'assise 20 en fonction de l'angle d'ouverture de l'assise. Ainsi, on assure un coulisse ent complémentaire de l'assise 20 par rapport à Taxe 24 permettant de réduire encore l'encombrement projeté au sol du siège lorsque l'assise 20 est relevée. Le rail 54 pourra éventuellement être monté à rotation par rapport à la pièce intermédiaire 22 si cela s'avère nécessaire.There is shown in Figure 3 a variant of the embodiment. Here, if Horizontal tax 24 is fixed relative to the base 12, the seat 20 is movable relative to this horizontal axis 24. As can be seen in Figure 3 which shows, in facial section, the junction of the intermediate piece 22 and of the seat 20, the intermediate piece 22 is constituted by a rail 54 cooperating with a path 56 formed in the lower part of the seat 20 to modify the position of horizontal tax 24 relative to the seat 20 as a function of the opening angle of the seat. Thus, it provides a complementary ent entisse of the seat 20 with respect to Tax 24 making it possible to further reduce the space projected on the floor of the seat when the seat 20 is raised. The rail 54 may possibly be mounted for rotation relative to the intermediate piece 22 if this proves necessary.
En référence maintenant à la Figure 4, le siège conforme à l'invention est notamment prévu pour équiper les amphithéâtres. On sait que dans les amphithéâtres, chaque rangée de sièges adjacents occupe un palier déterminé 64 séparé des paliers précédent et subséquent 66 par une dénivellation sensiblement importante 62 et souvent variable. Il en résulte généralement un problème du fait que le piétement d'un siège sert à porter la tablette de travail 60 du siège situé immédiatement derrière lui, et qu'il est, dès lors nécessaire d'ajuster la hauteur de la tablette 60 en fonction de la hauteur de la dénivellation 62. Ce problème est résolu avec le siège de l'invention en ce que le piétement 12 est monté de façon télescopique avec un premier élément 70 qui porte l'assise 20 et le mécanisme de relevage 40 tout en reprenant les forces verticales, tandis qu'un deuxième élément 72 porte la tablette subséquente 60. En outre, ce deuxième élément 72 reprend les forces horizontales engendrées par le poids de l'utilisateur de par sa fixation 74 prévue sur le palier supérieur 66 à la manière d'un arc-boutant.Referring now to Figure 4, the seat according to the invention is in particular intended to equip the amphitheatres. It is known that in the amphitheatres, each row of adjacent seats occupies a determined level 64 separated from the previous and subsequent levels 66 by a noticeable difference in height 62 and often variable. This usually results in a problem that the base of a seat is used to carry the work tablet 60 of the seat located immediately behind it, and that it is therefore necessary to adjust the height of the tablet 60 as a function of the height of the drop 62. This problem is solved with the seat of the invention in that the base 12 is mounted telescopically with a first element 70 which carries the seat 20 and the lifting mechanism 40 while taking up the vertical forces, while a second element 72 carries the subsequent shelf 60. In addition, this second element 72 takes up the horizontal forces generated by the weight of the user by its fixing 74 provided on the upper bearing 66 in the manner of a flying buttress.
On a donc bien ainsi déterminé un siège à assise relevable destiné à équiper les salles recevant du public, telles que les amphithéâtres et les salles de spectacles, présentant les avantages recherchés, à savoir un fonctionnement silencieux, et une adaptation simple à tout type de salle, qui est conforme aux normes de sécurité en vigueur, et qui ne comporte pas de pièces d'usure rapide. En outre, ce type de siège permet d'augmenter sensiblement la surface de la tablette qui lui est associée du fait du faible encombrement en projection au sol lorsque l'assise est relevée.So we have thus determined a seat with liftable seat intended to equip halls receiving the public, such as amphitheatres and concert halls, with the desired advantages, namely silent operation, and simple adaptation to any type of hall , which complies with the safety standards in force, and which does not include any fast-wearing parts. In addition, this type of seat makes it possible to significantly increase the surface area of the tablet associated with it due to the small size when projected on the ground when the seat is raised.
La tablette 60 peut également être, dès lors, notamment par sa fixation au piétement, conçue pour limiter considérablement l'effet habituel de caisse de résonance.The tablet 60 can also be, therefore, in particular by its attachment to the base, designed to considerably limit the usual effect of sounding board.
Il faut noter que, bien que Ton ait représenté sur lesIt should be noted that, although Ton was represented on the
Figures 1 à 5 le mécanisme de relevage 40 dans la partie supérieure du piétement 12, il pourrait tout aussi bien se trouver placé dans la partie inférieure du même piétement 12, avec un fonctionnement inversé similaire. La remontée de l'assise du siège conforme à l'invention se fait donc à vitesse constante et contrôlée, est freinée en fin de course sans butées, sans vieillissement mécanique notable, avec un rattrapage automatique du jeu, sans couinement ou grincement du à la présence d'un ressort, sans rebond ni claquement de l'assise sur le dossier, sans libre rotation comme avec un moyen de relevage par contrepoids, et avec un facteur de durabilité et une tenue dans le temps plus de deux fois supérieurs à ceux des sièges à relevage par ressort, et, notamment, conforme à la norme européenne EN 12727 (niveau 4).Figures 1 to 5 the lifting mechanism 40 in the upper part of the base 12, it could just as easily be placed in the lower part of the same base 12, with a similar reverse operation. The ascent of the seat cushion according to the invention therefore takes place at a constant and controlled speed, is braked at the end of the race without stops, without significant mechanical aging, with an automatic adjustment of the clearance, without squeaking or squeaking due to the presence of a spring, without rebound or slamming of the seat on the backrest, without free rotation as with a means of lifting by counterweight, and with a factor of durability and resistance over time more than twice that of spring-loaded seats, and in particular conforms to European standard EN 12727 (level 4).
Des essais en laboratoire ont, en effet, montré que le nombre de cycles d'ouverture-fermeture sans dégradation notable de l'ouverture résiduelle, est porté à plus de 100000, ce qui réduit d'autant les obligations de maintenance du siège.Laboratory tests have in fact shown that the number of opening-closing cycles without noticeable degradation of the residual opening is increased to more than 100,000, which reduces the maintenance obligations of the seat accordingly.
Sur les Figures 6 et 7, on a représenté respectivement en positions fermée et ouverte un siège conforme à un deuxième mode de réalisation de l'invention, selon lequel la position abaissée de la partie arrière 30 de l'assise 20 correspond à une position d'utilisation du siège.In Figures 6 and 7, there is shown respectively in the closed and open positions a seat according to a second embodiment of the invention, according to which the lowered position of the rear part 30 of the seat 20 corresponds to a position d use of the seat.
Dans ce mode de réalisation, Taxe de rotation 24 de l'assise 20 est porté par un bras 80 dont une extrémité 84 est fixée au piétement 12 et autour de laquelle il est monté à libre rotation. La partie arrière ou deuxième partie 30 ici se relève (au lieu de descendre comme dans le mode de réalisation représenté sur les Figures 1 à 5), ce qui signifie que c'est la première partie 32 de l'assise 20 qui va descendre lors du 'relevage' de l'assise.In this embodiment, the rotation tax 24 of the seat 20 is carried by an arm 80, one end 84 of which is fixed to the base 12 and around which it is mounted for free rotation. The rear part or second part 30 here rises (instead of descending as in the embodiment shown in Figures 1 to 5), which means that it is the first part 32 of the seat 20 which will descend during of the 'lifting' of the seat.
Le mécanisme, toujours constitué par un vérin à gaz 40, fonctionne alors en inverse de celui du mécanisme des Figures 1 à 5, et il est inutile de le décrire ici plus avant. Il est fixé au piétement 12 par sa première extrémité 82 qui peut avantageusement mais non nécessairement être distinct de Taxe 84.The mechanism, always constituted by a gas spring 40, then operates in reverse of that of the mechanism of Figures 1 to 5, and there is no need to describe it here further. It is fixed to the base 12 by its first end 82 which can advantageously but not necessarily be distinct from Tax 84.
De préférence, l'autre extrémité du bras 80 opposée à sa première extrémité 84 et déterminant Taxe de rotation 24 est montée à coulissement dans un rail 86 pouvant être incliné, solidaire de l'assise 20, de manière à éviter que l'assise 20 ne se referme si un utilisateur s'assoit à son extrémité.Preferably, the other end of the arm 80 opposite its first end 84 and determining rotation tax 24 is slidably mounted in a rail 86 which can be inclined, integral with the seat 20, so as to prevent the seat 20 does not close if a user sits at its end.
Dans l'exemple représenté sur les Figures 6 et 7, le bras 80 est monté en forme de levier présentant un point d'appui sur son axe 84, Taxe 82 relié au vérin 40 étant rendu ainsi mobile. Une telle solution n'est, bien sûr, pas obligatoire.In the example shown in Figures 6 and 7, the arm 80 is mounted in the form of a lever having a fulcrum on its axis 84, Tax 82 connected to the jack 40 being made thus mobile. Such a solution is, of course, not compulsory.
Pour s'asseoir, l'utilisateur doit appuyer sur la partie arrière 30 de l'assise ou tirer la partie avant 32 de cette assise 20, et la position sensiblement avancée de Taxe 24 permet à l'assise de rester ouverte lorsque l'utilisateur est normalement assis.To sit, the user must press on the rear part 30 of the seat or pull the front part 32 of this seat 20, and the substantially advanced position of Tax 24 allows the seat to remain open when the user is normally seated.
On peut également prévoir que l'extrémité 82 du bras 80 soit monté sur un excentrique (non représenté) pour favoriser le mouvement du bras 80.Provision may also be made for the end 82 of the arm 80 to be mounted on an eccentric (not shown) to promote movement of the arm 80.
On obtient donc bien ainsi un siège à assise relevable présentant une excellente ergonomie et dont tous les paramètres essentiels sont facilement contrôlables, notamment en ce qui concerne l'ouverture et la fermeture de l'assise en vue de réduire l'encombrement et le poids de cette dernière.A seat with a liftable seat is therefore thus obtained which has excellent ergonomics and all the essential parameters of which are easily controllable, in particular with regard to the opening and closing of the seat in order to reduce the size and weight of the latter.
Bien évidemment, dossier et assise peuvent être rembourrés à volonté. Bien que Ton ait représenté et décrit ce que Ton considère actuellement être les modes de réalisation préférés de la présente invention, il est évident que l'Homme de l'Art pourra y apporter différents changements et modifications sans sortir du cadre de la présente invention tel que défini ci-après.Obviously, the backrest and seat can be upholstered at will. Although it has been shown and described what is currently considered to be the preferred embodiments of the present invention, it is obvious that those skilled in the art will be able to make various changes and modifications thereto without departing from the scope of the present invention. as defined below.
Notamment, bien que le piétement ait été décrit comme affectant une forme en coupe transversale sensiblement cylindrique, il est évident qu'il pourrait tout aussi bien affecter une forme carrée ou triangulaire en coupe, ou bien même affecter la forme d'un T ou d'un U en coupe transversale, le mécanisme de relevage étant alors accessible directement sans qu'il soit nécessaire de démonter totalement le piétement, par exemple pour en faire l'échange.In particular, although the base has been described as affecting a substantially cylindrical cross-sectional shape, it is obvious that it could just as easily affect a square or triangular shape in cross-section, or even affect the shape of a T or d 'A U in cross section, the lifting mechanism then being directly accessible without the need to completely disassemble the base, for example to exchange it.
Il est toutefois souhaitable que ce mécanisme de relevage soit et reste inaccessible à l'utilisateur du siège et à ses voisins pour éviter tout accident de type pincement et toute détérioration inopportune.However, it is desirable that this lifting mechanism is and remains inaccessible to the seat user and to his neighbors to avoid any pinch-type accident and any untimely deterioration.
De même, le piétement a été décrit comme unique et centré dans Taxe de symétrie du siège, mais il est évident que le piétement peut être décalé par rapport à cet axe de symétrie, par exemple pour des raisons esthétiques, ou bien être constitué de deux éléments parallèles dont Tun reçoit ou les deux reçoivent un mécanisme de relevage comme il a été représenté schématiquement sur la Figure 8.Similarly, the base has been described as unique and centered in Tax symmetry of the seat, but it is obvious that the base can be offset from this axis of symmetry, for example for aesthetic reasons, or be made up of two parallel elements from which Tun receives or both receive a lifting mechanism as shown schematically in Figure 8.
De même également, on peut adapter aisément l'invention pour que le mécanisme de relevage de l'assise soit situé à l'intérieur du dossier lui-même, de manière à dissocier le siège proprement dit de son piétement en vue de dissocier les problèmes liés au piétement de ceux liés à l'assise. Ainsi, on a schématiquement représenté sur la Figure 9 un fauteuil notamment destiné à équiper un théâtre ou équivalent. Dans cet exemple, l'assise comporte une partie rembourrée 92 ; il en est de même pour le dossier qui est constitué d'une plaque dure 98, par exemple en bois, et d'un rembourrage 96. Le dossier est fixé au piétement 12 au moyen d'une fourche 100 et des accoudoirs 94 sont prévus de part et d'autre du siège.Likewise, the invention can easily be adapted so that the seat lifting mechanism is located inside the backrest itself, so as to dissociate the seat itself from its base in order to dissociate the problems linked to the legs of those linked to the seat. Thus, there is schematically shown in Figure 9 a chair in particular intended to equip a theater or equivalent. In this example, the seat has a padded part 92; it is the same for the backrest which consists of a hard plate 98, for example of wood, and padding 96. The backrest is fixed to the base 12 by means of a fork 100 and armrests 94 are provided on either side of the seat.
Le mécanisme de relevage 40 de l'assise est ici logé entre la plaque dure 98 et le rembourrage 96 du dossier. On obtient ainsi un fauteuil très esthétique et présentant tous les avantages précités. The lifting mechanism 40 of the seat is here housed between the hard plate 98 and the padding 96 of the backrest. This gives a very aesthetic chair with all of the above advantages.

Claims

R E V E N D I C AT I O N SR E V E N D I C AT I O N S
1 - Siège à assise basculante autour d'un axe horizontal (24), prévu notamment pour équiper des salles recevant du public telles que des amphithéâtres et/ou des salles de spectacle, comportant au moins un piétement présentant un axe sensiblement longitudinal (14) et auquel est éventuellement fixé un dossier (16), et par rapport auquel est déterminé un axe horizontal fixe (24), la dite assise (20) comprenant une première partie (32) faisant saillie vers l'avant par rapport au dit axe horizontal (24), et une deuxième partie (30) faisant saillie vers le dit piétement (12), caractérisé en ce que le dit piétement (12) enferme un vérin à gaz (40) dont une extrémité (48) est fixée au dit piétement (12) et l'autre extrémité (50) est fixée à la dite deuxième partie (30) de la dite assise (20).1 - Seat with tilting seat around a horizontal axis (24), intended in particular to equip halls receiving the public such as amphitheatres and / or performance halls, comprising at least one base having a substantially longitudinal axis (14) and to which a backrest (16) is possibly fixed, and with respect to which a fixed horizontal axis (24) is determined, said seat (20) comprising a first part (32) projecting forward with respect to said horizontal axis (24), and a second part (30) projecting towards the said base (12), characterized in that the said base (12) encloses a gas spring (40), one end (48) of which is fixed to the said base (12) and the other end (50) is fixed to said second part (30) of said seat (20).
2 - Siège selon la revendication 1, caractérisé en ce que la distance entre le dit axe horizontal (24) et le dit axe longitudinal (14) du dit piétement (12) est comprise entre 2 et 15 cm environ.2 - Seat according to claim 1, characterized in that the distance between said horizontal axis (24) and said longitudinal axis (14) of said base (12) is between 2 and 15 cm approximately.
3 - Siège selon la revendication 2, caractérisé en ce que le dit axe horizontal (24) est porté par une pièce intermédiaire (22) faisant saillie de Taxe longitudinal (14) du dit piétement (12) auquel elle est fixée. 4 - Siège selon la revendication 1, 2 ou 3, caractérisé en ce que la dite distance est variable.3 - Seat according to claim 2, characterized in that said horizontal axis (24) is carried by an intermediate piece (22) projecting from the longitudinal tax (14) of said base (12) to which it is fixed. 4 - Seat according to claim 1, 2 or 3, characterized in that said distance is variable.
5 - Siège selon la revendication 4, caractérisé en ce que la dite pièce (22) constitue un rail (56) coopérant avec la dite assise (20) pour modifier la position du dit axe horizontal (24) par rapport à la dite assise (20) en fonction de l'angle d'ouverture β de la dite assise (20).5 - Seat according to claim 4, characterized in that said part (22) constitutes a rail (56) cooperating with said seat (20) to modify the position of said horizontal axis (24) relative to said seat ( 20) as a function of the opening angle β of said seat (20).
6 - Siège selon la revendication 1, caractérisé en ce que le dit axe horizontal (24) est porté par un bras (80) libre en rotation autour d'une première (82) de ses extrémités fixée au dit piétement (12).6 - Seat according to claim 1, characterized in that said horizontal axis (24) is carried by an arm (80) free to rotate around a first (82) of its ends fixed to said base (12).
7 - Siège selon la revendication 6, caractérisé en ce que l'autre extrémité du dit bras (80) est montée à coulissement dans un rail (86) solidaire de la dite assise (20).7 - Seat according to claim 6, characterized in that the other end of said arm (80) is slidably mounted in a rail (86) integral with said seat (20).
8 - Siège selon Tune quelconque des revendications précédentes, caractérisé en ce qu'une ouverture (42) est pratiquée dans le dit piétement (12) en regard de la dite deuxième partie (30) de la dite assise (20), de manière à accueillir au moins partiellement cette dite deuxième partie (30).8 - Seat according to any one of the preceding claims, characterized in that an opening (42) is made in the said base (12) opposite the said second part (30) of the said seat (20), so as to at least partially welcoming this so-called second part (30).
9 - Siège selon la revendication 8, caractérisé en ce que la longueur de la partie de la dite deuxième partie (30) pénétrant dans la dite ouverture (42) est inférieure au diamètre du dit piétement (12).9 - Seat according to claim 8, characterized in that the length of the part of said second part (30) entering said opening (42) is less than the diameter of said base (12).
10 - Siège selon Tune quelconque des revendications précédentes, caractérisé en ce que le dit axe longitudinal (14) forme un angle déterminé β avec la verticale, le dit piétement (12) étant monté de façon télescopique, un premier élément (70) du dit piétement (12) portant la dite assise (20) et le dit vérin (40) en reprenant les forces verticales, tandis qu'un deuxième élément (72)du dit piétement (12) reprend les forces horizontales engendrées par le poids de l'utilisateur.10 - Seat according to any one of the preceding claims, characterized in that the said longitudinal axis (14) forms a determined angle β with the vertical, the said base (12) being mounted telescopically, a first element (70) of said base (12) carrying said seat (20) and said cylinder (40) taking up the vertical forces, while a second element (72) of said base (12) takes up the horizontal forces generated by the weight of the user.
11 - Siège selon la revendication 10, caractérisé en ce que le dit deuxième élément (72) est susceptible de porter une tablette de travail (60) pour un utilisateur placé derrière le dit siège.11 - Seat according to claim 10, characterized in that said second element (72) is capable of carrying a work tablet (60) for a user placed behind said seat.
* * * * * *
EP00910918A 1999-03-17 2000-03-10 Seat with tilting seating surface Expired - Lifetime EP1079714B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9903282 1999-03-17
FR9903282A FR2790927B1 (en) 1999-03-17 1999-03-17 TILT SEAT SEAT
PCT/FR2000/000588 WO2000054629A1 (en) 1999-03-17 2000-03-10 Seat with tilting seating surface

Publications (2)

Publication Number Publication Date
EP1079714A1 true EP1079714A1 (en) 2001-03-07
EP1079714B1 EP1079714B1 (en) 2006-07-26

Family

ID=9543291

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Application Number Title Priority Date Filing Date
EP00910918A Expired - Lifetime EP1079714B1 (en) 1999-03-17 2000-03-10 Seat with tilting seating surface

Country Status (8)

Country Link
US (1) US7469966B1 (en)
EP (1) EP1079714B1 (en)
CN (1) CN1120686C (en)
CA (1) CA2333422C (en)
DE (1) DE60029522T2 (en)
ES (1) ES2269111T3 (en)
FR (1) FR2790927B1 (en)
WO (1) WO2000054629A1 (en)

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Also Published As

Publication number Publication date
EP1079714B1 (en) 2006-07-26
FR2790927A1 (en) 2000-09-22
CA2333422A1 (en) 2000-09-21
CN1120686C (en) 2003-09-10
DE60029522D1 (en) 2006-09-07
ES2269111T3 (en) 2007-04-01
DE60029522T2 (en) 2007-07-19
WO2000054629A1 (en) 2000-09-21
CN1297335A (en) 2001-05-30
CA2333422C (en) 2008-02-19
FR2790927B1 (en) 2001-06-01
US7469966B1 (en) 2008-12-30

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