EP1272071B1 - Chaise - Google Patents

Chaise Download PDF

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Publication number
EP1272071B1
EP1272071B1 EP01919236A EP01919236A EP1272071B1 EP 1272071 B1 EP1272071 B1 EP 1272071B1 EP 01919236 A EP01919236 A EP 01919236A EP 01919236 A EP01919236 A EP 01919236A EP 1272071 B1 EP1272071 B1 EP 1272071B1
Authority
EP
European Patent Office
Prior art keywords
seat
back rest
recess
chair according
chair
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.)
Expired - Lifetime
Application number
EP01919236A
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German (de)
English (en)
Other versions
EP1272071A1 (fr
Inventor
Brian Aaby Hansen
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.)
Lindgreen Annette
Original Assignee
Lindgreen Annette
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Filing date
Publication date
Application filed by Lindgreen Annette filed Critical Lindgreen Annette
Priority to DK01919236T priority Critical patent/DK1272071T3/da
Publication of EP1272071A1 publication Critical patent/EP1272071A1/fr
Application granted granted Critical
Publication of EP1272071B1 publication Critical patent/EP1272071B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A47C7/02—Seat parts
    • A47C7/029—Seat parts of non-adjustable shape adapted to a user contour or ergonomic seating positions
    • 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
    • A47C7/02—Seat parts
    • A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
    • A47C7/144—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions with array of movable supports

Definitions

  • the invention relates to a chair or another piece of sitting furniture for use with an essentially upright sitting position, including a seat of any kind to carry a sitting person in an essentially upright sitting position, which furniture comprises a seat and a supporting structure which is preferably adjustable in height.
  • the International Patent Application No. WO 83/3195 discloses a chair for the prevention of pressure sores (de-cubitis ulcer) of sitting patients, where the shape of the seat cushion is formed by a moulded seat padding with a lowered area for the user's posterior, and where the lowered area is surrounded by heightened ribs forward and to each side, but is open at the back.
  • the front rib is deeper (longer) than the side ribs and extends preferably over about 40% of the length of the seat.
  • This chair has the inconvenience that there is no possibility of adjustment to individual users.
  • the chair must therefore be either adapted to the user's proportions during production whereby it will be extremely costly and can only be used for actual treatment of patients, or used without adjustment whereby most users cannot obtain a reasonable sitting comfort as there will still be local specific pressure concentrations between the seat of the chair and the user's thighs and posterior.
  • US Patent No. 5,058,952 discloses a chair where the seat cushion is carried by a number of adjustable belts, each extending from the right side to the left side of the seat in various distances from the front edge of the seat. Moreover, the seat is intended to be adjusted automatically when the user sits down as the belts stretch to a certain tension until a certain point on the seat is lowered to a predetermined depth whereupon the belts are locked in the length which they have then reached.
  • the seat is to this end well equipped with mechanisms and electromechanical control devices.
  • This chair has the inconvenience that the seat because of its nature and enhanced by the automatics will permit the user to take any sitting position, and thus also an inappropriate or downright bad or injurious sitting position. Furthermore, such a seat will be extremely costly.
  • the International Patent Application No. WO 99/62379 discloses a chair where the seat upholstery is placed on a rigid, plane plate and has an oval depression at the back of the seat whereby the rear edge of the seat cushion is about 3 cm lower than the front edge. Furthermore, the back rest is apparently designed with a cut-out at the bottom so that the upper portion of the pelvis is not supported from the rear by the back rest. The description is, however, summary and extremely obscure, and the description of the back rest is based entirely on the figures 4 and 5 which are contradictory.
  • This chair has the disadvantage that the seat is substantially plane and, therefore, an appropriate support of the user's thighs and posterior can probably not be obtained.
  • the described oval depression in the seat cushion seems in this connection completely insufficient. It is moreover a considerable inconvenience that because of the cut-out, the back rest cannot support the upper edge of the pelvis against fall-back.
  • moulded car seats are known to be individually adjusted to the driver or even produced as a cast of the driver's body. Such seats are, however, adjusted to a lying position and are not at all suitable for an upright sitting position.
  • the object of the invention is to provide a piece of furniture belonging to the initially stated group of kinds where the above disadvantages are eliminated, and where a sitting person can be supported in such a way that the angle formed by a person's pelvis in the sitting position in the rotary movement which the pelvis can make around the hip joints while the femurs are substantially kept stationary, and the course shown by the person's lower vertebras in the sitting position are and remain optimal in order to prevent discomfort and pain in the lower articulations of the spinal column, including the articulation to the pelvis ( sacrum ) and discomfort in the sitting position in general.
  • the rear portion of the seat has a recess in the form of an aperture which is dimensioned to receive the posterior and the upper portions of the thighs of a sitting person, the recess at least on the person's right and left side partially surrounding the posterior and the upper portion of the thighs.
  • This recess has several favourable effects. Firstly, it helps to prevent that the user's thighs and posterior are displaced forward on the seat as this would require that the stout part of the thighs and the posterior should thus be pushed upwards from the recess; this is counteracted by the gravitation in connection with the inclination of the front portion of the recess.
  • Pelvis fall-back is by far the most common sitting defect, and one of the most serious defects, as it causes a heavy strain on ligaments and articular disks in the lower joints in the spinal column because these are subjected to bending at the same time as they must carry the weight of the back in a static way.
  • the recess has the effect that the vertical reaction force from the seat against the user's weight is distributed efficiently over a larger part of the surface of the user's thighs and posterior, as besides being supported in the middle below the pelvis and in the middle under the femurs, these are also supported to the right and to the left of these areas, i.e. where the oblique "sides" of the recess abut on the outer sides of the user's buttocks and the outer sides of the upper portions of the thighs.
  • the ischia will when sitting on a plane or nearly plane surface be strained rather heavily resulting in soreness and tiredness in the tissue positioned around the ischia.
  • the recess may comprise between 45% and 90% of the length of the seat, according to the present invention it comprises between 55% and 80%, and preferably about 66%, of the length of the seat.
  • the above defined objects are according to the invention met in that the depth of the recess is adjustable, preferably separately (i.e. locally) adjustable in various distances from the front edge of the seat.
  • the recess is preferably formed in that the supporting structure of the recess comprises flexible elements which are suspended between side members extending essentially along the right and left edges, respectively, of the seat.
  • the recess has in an advantageous manner the character of a cylinder or conical surface with its axis parallel to the user's femurs. If the dimensions of this surface are selected in an appropriate way, in accordance with the user's proportions, it is obtained that the seat will surround the user's posterior and thighs as far as possible up the sides such that the reaction forces from the seat acting on the posterior and thighs are distributed over as large a part of the surface of the posterior and thighs as possible.
  • testees which on an ordinary chair without back rest develop pelvis fall-back after a short moment, can sit on a chair according to the invention for up to 10 minutes without developing pelvis fall-back.
  • a second assumption is that the course of the femurs where each femur is horizontal or where the hip end of the femur is a little lower than its knee end, in itself results in a reduced tendency of pelvis fall-back.
  • a third assumption is that the pelvis position which the chair according to the invention makes the user occupy is identical to the pelvis position of a person in an ideal, completely balanced, standing position.
  • a person sitting on a chair according to the invention can maintain his advantageous sitting posture with far smaller support from a back rest than necessary in a chair with a conventional seat, and that he can remain seated for hours without discomfort.
  • the side members extend obliquely relative to the horizontal such that the rear portions of the side members is higher than their front portions.
  • the side members extend with varying distance between them, such that the distance between the rear portions of the side members is larger than the distance between the front portions of the side members.
  • the flexible elements comprise preferably seat straps, fabrics or similar material layers or one or more sheet-shaped elements.
  • the said elements are all in principle inextensible and at the same time very flexible.
  • a very advantageous pressure equalisation is thus obtained between different areas of the user's downward surface, and unwanted specific pressure concentrations are avoided to the greatest possible extent.
  • the desired adjustability is obtained in that the lengths of arc of the flexible elements measured from side member to side member can be adjusted, preferably adjusted locally in various distances from the front edge of the seat.
  • the supporting structure of the rear portion of the seat comprises seat straps, each comprising two portions provided with burr fasteners such as Velcro® tape to obtain adjustability for the effective lengths of the seat straps by joining the burr fasteners in different positions.
  • burr fasteners such as Velcro® tape
  • Each seat strap can e.g. comprise two strap parts each fastened to its side member of the seat, and each provided with cooperating Velcro® tapes; thus the length of the pieces of the two strap pieces which overlap each other can be varied whereby the entire effective length of the strap is varied.
  • each strap can be circumferential, i.e. disposed as a loop around both side members whereby the two ends of the strap overlap each other and are provided with cooperating Velcro® tape, so that the effective length of the strap can be varied by changing the length of the overlap. Combinations of these two principles are also included in the invention.
  • the length of the seat measured from its front edge to the rear edge of the recess is adjustable. This provides a very advantageous possibility of adjustment of the seat to the length of the user's thighs.
  • the length of the seat is adjusted by adjusting the length of the recess. In this way, interventions in the fixed front part of the seat are avoided.
  • the rear edge of the seat is essentially flush with the bottom of the recess, whereby any suggestion of an upward rear edge is avoided, and such that a supplementary security is obtained for the user's posterior to be able to be pushed all the way back on the seat of the chair without hindrance. At the same time, any pressure against the user's coccyx is avoided which would be very unfortunate and injurious for a good sitting position.
  • the chair according to the invention can preferably comprise a back rest which is meant to abut on the user's back opposite the upper edge of the pelvis.
  • the seat according to the invention makes it per se considerably easier for the user to maintain a favourable sitting posture without pelvis fall-back, and it is therefore not absolutely necessary with a proper back rest.
  • the chair has at least one back rest which abuts on the user's back opposite the upper edge of the pelvis in order to secure efficiently against pelvis fall-back.
  • the chair has a back rest with a supporting structure which essentially comprises horizontally extending back rest straps which are suspended between two essentially vertical columns generally extending along the right and left edges, respectively, of the back rest.
  • the curvature of the back rest is adjustable by adjusting the effective lengths of the back rest straps.
  • the invention permits to adjust the curve in a horizontal section plane (i.e. the curve of the backside of the body as seen from above) independent of the curve in a vertical section plane (i.e. the curve of the spinal column as seen from the side).
  • the angle of the back rest is adjustable, preferably in that the angle of the columns relative to the vertical direction is adjustable in or near a vertical plane parallel to the vertical longitudinal plane of symmetry of the seat.
  • the chair has an open zone between the rear edge of the seat and the lower edge of the back rest in order to secure that no part of the chair abuts on backwards facing portions of the person's posterior.
  • the back rest be displaceable in the longitudinal direction of the seat when the user is sitting in the chair, whereby the user can force the back rest forward against the upper portion of the pelvis once he has taken his sitting position.
  • the surface of the seat has a high friction against the user's surface, and that at the same time, the user's posterior is pushed entirely back on the seat and "in below" the back rest as he sits down.
  • the desired high friction can, however, notoriously make it more or less difficult to push oneself entirely back on the seat, Therefore, it will be easier to sit in the chair and obtain a correct sitting posture if the user can merely sit in the seat and then move the back rest forward until the upper edge of the pelvis is forced sufficiently far ahead.
  • Fig. 1 shows schematically a sitting person seen from the side.
  • the person's foot is symbolised by 1, the tibia and fibula by 2, the femur by 3, the pelvis by 4 and the spinal column by 5.
  • the person's body contour is shown as the curve 6.
  • Fig. 1 the person is positioned in a particularly favourable sitting position, the pelvis 4 being localised such in the direction of rotation 7 - the rotating movement which the pelvis can perform about the two hip joints while the femurs 3 are kept stationary - that the pelvis 4 and the lumbar vertebrae 8 occupy approximately the same position or angle relative to each other as when the person stands up in perfect balance and approximately at rest.
  • This straightening of the lumbar sway is generally considered to be very injurious. It is therefore desirable that a chair can force a person - or help him - to counteract this straightening of the lumbar sway.
  • Fig. 1 The person in Fig. 1 is sitting on a seat 10 of a chair according to the invention. Seen from the side, this seat is divided into three portions: a front portion A which is essentially horizontal; a middle portion B which tilts to the rear; and a rear portion C which is also essentially horizontal.
  • the pelvis 4 As the lower edge of the pelvis 4 cannot slip forward in the direction 9 and the upper edge of the pelvis 4 is preferably supported from behind by a back rest, the pelvis 4 is prevented in an efficient way from falling back and the desired lumbar sway can thus be maintained in a secure manner.
  • a chair 21 in Figs 2-5, an embodiment is shown for a chair 21 according to the invention with a seat 10 and back rest 34 where the seat cushion is removed for the sake of clarity.
  • This cushion is preferably merely a cushion of a uniform thickness and with uniform elastic properties, of the same size as the seat and placed upon this.
  • One preferred embodiment of the seat cushion consists of an approximately 30 mm thick plate of polyether foam, covered with a cloth which is not smooth.
  • the front third of the seat 10 is constituted by an upholstery 12 with an essentially horizontal upper surface 14 and a rounded front edge 15.
  • the seat is in particular characterised in that the rear two thirds of the seat are constituted by a recess 13.
  • this recess is provided in that the rear portion of the seat has an aperture or opening, across which two straps 17-18 are suspended with a certain slack, the rear portion of the sitting surface of the seat, formed by the straps 17-18, being lowered relative to the upholstery 12.
  • the straps 17-18 are suspended between two branches or side members 22-23 of a circumferential frame 28 which also carries the upholstery 12.
  • the frame 28 is carried in an adjustable manner by a bar 19 which is positioned on an underframe 20 of a type known per se.
  • the underframe 20 is besides not as such of importance for the characteristic mode of operation of the chair 21 according to the invention, except that it should in a manner known per se be adjustable in the height, cf. below.
  • the seat 10 has a curve in a vertical cross plane, e.g. as seen from the front in Fig. 4.
  • the straps 17-18 both extend along upwards concave curves. This curve has surprisingly turned out to contribute partly to an efficient retaining of the user's thighs and posterior on the seat from slipping forward in the direction 9 (Fig. 1), and partly to a favourable reduction in the discomfort of the continuous load provided by the sitting position on the underside of the posterior and the backside of the thighs of the sitting person.
  • Fig. 9 shows a vertical section in the seat 10 of the chair 21 with a sitting person, seen from behind.
  • the rear portion of the seat 10 with the recess 13 is in Fig. 9 illustrated by the strap 18 which extends between the two branches or side members 22-23 of the frame 28 of the seat.
  • the strap 18 will obviously follow the contour of the body, as shown in the figure.
  • the seat cushion is omitted in the figure for the sake of clarity.
  • both the strap and the body contour are resilient (the strap is very flexible, but inextensible, and the body is very elastic and to some extent plastic), a balance will arise between the normal forces 29-30 of the curve followed by the strap 18. In places where the body 24 rests against the strap 18 with a larger normal force 29, the strap will bend outwards, the normal force 29 then being reduced, and in places where the body rests against the strap with a smaller normal force 29, the strap 18 will be tightened until the normal force 29 and the corresponding reaction force 30 are increased proportionally.
  • transverse straps of preferably variable length With transverse straps of preferably variable length, a favourable distribution of the load forces is thus obtained, and the normal forces 29-30 in local load maxima, e.g. under the ischia 25-26 are reduced as much as possible.
  • Fig. 4 is seen that the distance between the branches or side members 22 and 23 is larger at the rear end of the seat 10 than at its front end. This contributes to the fact that the user's posterior is enclosed by the seat appropriately high up and thus is supported on a larger area.
  • Fig. 3 further shows schematically a mechanism according to a preferred embodiment of the invention to bring the back rest 34 in engagement with the user's back after he has taken a seat in the chair 21.
  • An essentially horizontally extending rail element 41 is fastened behind the seat 10 of the chair 21, preferably rearmost on the frame 28, on which rail element a carriage or a slide 42 can be displaced forwards and backwards in the direction 43, and fixed in a desired position.
  • the direction 43 is preferably horizontal and parallel to the vertical symmetry plane of the chair.
  • the back rest is fastened to the slide 42 and thus follows it forwards and backwards, being displaced parallel to the direction 43 which is indicated by the arrows 43 in Fig. 3.
  • the back rest 34 is displaced and fixed by an operating handle 45 which is arranged such that it can conveniently be operated by the user while he sits in the chair.
  • the operating handle must not necessarily be arranged in the way shown in Fig. 3; Fig. 3 serves exclusively as an example illustration of the principle of operation of the mechanism.
  • the operating handle 45 functions according to the invention preferably in the way that it can be displaced between two extreme positions, i.e. a first position where the back rest 34 is locked in a front position, and a second position where the back rest is displaced backwards by a certain distance; the length of this distance can preferably be adjustable.
  • the user can be relieved from having to be careful about placing his posterior further far back on the seat or guiding his posterior "inward below” the back rest cushion 37.
  • this mechanism such that it is actuated by the user's weight when he sits in the chair instead of the mechanism being actuated by control of the operating handle.
  • FIG. 6 an advantageous embodiment of the chair according to the invention is illustrated.
  • Fig. 6 shows merely the seat 10 and back rest 34 of the chair.
  • the bottom of the recess 13 of the seat 10 is formed by three straps 16-18 which in the same way as described above extend between branches 22-23 of a frame 28.
  • the ends 32-33 of the straps are guided through the branches 22-23.
  • the lengths of the straps are preferably individually adjustable, e.g. in that the ends of the straps can be clamped in the branches 22-23 by appropriate screw or clamp mechanisms (not shown in the figure).
  • the clamping can advantageously be made where the ends 32-33 of the straps are guided through the branches 22-23.
  • each strap is placed as a closed loop around the branches 22-23 of the frame 28, the two ends of the strap being fastened to each other by means of burr fasteners such as Velcro® tape.
  • the effective length of each strap will thus in a simple way be adjustable without use of tools.
  • the length of the straps can besides be made adjustable in any suitable way without thus contesting the validity of the favourable effect of the invention.
  • the recess 13 of the seat 10 can be adjusted individually to the person who is to sit in the chair. It is thus possible to obtain an optimal retaining of the person's posterior and thighs against forward slipping, and an optimal distribution of the load on the posterior and thighs stemming from the weight of the body 24 over as large an area as possible.
  • the chair in Fig. 6 is intended to be provided with an underframe carrying the seat 10 and the back rest 34 by supporting the circular frame 28 of the seat in an appropriate way, e.g. in a manner corresponding to the one shown in Fig. 2.
  • Fig. 7 shows another preferred embodiment of the invention with the same seat as in Fig. 6 but with another back rest 34.
  • the back rest 34 in Fig. 7 comprises a back rest frame 53 having two essentially vertically extending columns 54-55, between which a number of essentially horizontally extending back rest straps 48-50 are suspended.
  • the back rest frame 53 is in the shown embodiment carried by two adjustable joints 46-47 which are fastened to the frame 28 of the seat 10, by means of which joints the angle of the back rest frame 53 with the frame 28 of the seat can be adjusted.
  • the ends 51-52 of the straps 48-50 are in Fig. 7 guided through the columns 54-55 and clamped in these in a manner not shown in detail.
  • the lengths of the straps 48-50 are thus preferably individually adjustable in a way corresponding to that of the above seat straps 16-18. This adjustability can also be provided in any suitable way without falling outside the scope of the invention.
  • the lengths of the back rest straps 48-50 are thus according to the invention made adjustable, it is obtained that the form of the back rest 34 can be adjusted to the individual person who is to sit in the chair. An optimal support of the person's back and a desired course of the person's spinal column are thus made possible.
  • the effective curvature of the back rest 34 can be adjusted separately in two planes.
  • the curve 56 in a horizontal section plane i.e. the curve of the backside of the body seen from above
  • the curve 57 in a vertical section plane i.e. the curve of the spinal column seen from the side
  • the curve in the horizontal section plane which curve is illustrated by the dotted line 56 in Fig. 7, is a result of the back rest straps 48-50 being tightened more or less. The more the back rest straps are tightened, the more straight the line 56 will be, and the more plane the back rest will be (seen from above).
  • the curve in the vertical section plane (the symmetry plane of the chair 21), which curve is illustrated by the dotted line 57 in Fig. 7, is a result of the back rest straps 48-50 being tightened or slackened differently.
  • the back rest 34 is saddle-shaped such that the line 56 is forward concave and such that the line 57 is backward concave in its entire length.
  • a desired lumbar sway can thus be set for the user of the chair, and at the same time his back can receive support in the entire width of the back; the latter contributes considerably to reducing the effective specific pressure on the back.
  • Fig. 8 shows schematically a person 35 sitting in a chair 21 according to the invention with the seat 10 and back rest 34 as shown in Fig. 6.
  • the person 35 occupies a sitting position which is very characteristic for the chair according to the invention.
  • a closer analysis of the sitting position in Fig. 8 reveals that the lumbar sway is maintained in the sitting position, and that the positions of the femurs are close to horizontal. It is correspondingly assumed that the angle in the hip joints is approximately 90° different from the angle of the joints in a standing position.
  • the lower 37 of the two cushions 36-37 of the back rest 34 is in Fig. 8 set to a height corresponding to the most curved part 38 of the lumbar sway (Fig. 1) and forces and helps, respectively, the person to maintain this sway.
  • the upper back rest cushion 36 is adjusted to support the back just below the scapulae, providing the person 35 with some support, but at the same time maintaining a desired movability to perform backwards stretching exercises in the sitting position.
  • a person's pelvic region is forced by the back rest cushion 37 and the oblique portion B of the seat 10 to take an essentially right-angled position, whereby the angled position is essentially merely obtained by a rotation of 90° in the hip joints.
  • the effective securing of the person's thighs and posterior in the recess 13 contributes to this.
  • the upper back rest cushion 36 can be omitted without deteriorating the favourable effect of the invention.
  • this is preferably arranged at a height where the middle of the cushion 37 is at height with the upper edge of the pelvis 4, cf. Fig. 1.
  • the length of the seat 10 is according to the invention adjustable in order to obtain an optimal matching to the user's body proportions and in order to provide an optimal support of the user's thighs to avoid local load maxima.
  • this matching is obtained in that an upholstery 12 forming the front edge of the seat 10 can be displaced in relation to the frame 28 in the direction 44, cf. Figs 6-7.
  • it is thus the length of the recess 13 which is changed when the total length of the seat 10 is changed by displacement of the upholstery 12.
  • the underframe 20 of the chair is adjustable in the height, e.g. by means of an adjustment device 39 known per se (Figs 3-4).
  • This adjustability is essential in order to permit the user's feet to transfer an appropriate part of the user's weight to the floor at the same time as the lower part of the user's thighs can transfer an appropriate part of the user's weight to the front part 14 of the seat 10.
  • the user's heels rest on the floor and thereby essentially carry the weight of the tibia (calf), however, without being subject to so much load that the front part of the seat 10 is relieved completely or almost completely from the weight of the lower portions of the thighs.
  • the seat cushion 40 can just be seen in position under the user's thighs: the seat cushion 40 is e.g. and preferably a thin, rectangular cushion of a uniform thickness and with a uniform compressibility over the entire area of the seat.

Claims (19)

  1. Chaise (21) avec un siège (10) et une structure de support (20) de préférence ajustable en hauteur, dans laquelle la portion arrière du siège (10) a un retrait (13) dimensionné de manière à recevoir le postérieur et les portions supérieures des cuisses d'une personne assise (35), le retrait au moins sur le côté droit et sur le côté gauche de la personne comprenant des éléments latéraux (23) entourant partiellement le postérieur et les portions supérieures des cuisses, le retrait constituant entre 55% et 80% et de préférence environ 66% de la longueur du siège (10), et la profondeur du retrait (13) étant la plus grande à l'arrière, caractérisée en ce que le retrait (13) a la forme d'une ouverture avec une structure de support d'un utilisateur définissant le fond du retrait de telle manière que la profondeur du retrait (13) soit ajustable.
  2. Chaise selon la revendication 1, caractérisée en ce que la profondeur du retrait (13). est localement ajustable à différentes distances du bord avant du siège.
  3. Chaise selon la revendication 1 ou la revendication 2, caractérisée en ce que la structure de support du retrait comprend des éléments flexibles qui sont suspendus entre des éléments latéraux (22-23) s'étendant essentiellement le long des bords droit et gauche du siège, respectivement.
  4. Chaise selon l'une quelconque des revendications précédentes, caractérisée en ce que les éléments latéraux (23) s'étendent obliquement par rapport à la direction horizontale de telle sorte que les portions arrière des éléments latéraux soient plus élevées que leur portions avant.
  5. Chaise selon l'une quelconque des revendications précédentes, caractérisée en ce que les éléments latéraux (22-23) s'étendent avec une distance mutuelle variable de telle sorte que la distance entre les portions arrière des éléments latéraux soit plus grande que la distance entre les portions avant des éléments latéraux.
  6. Chaise selon l'une quelconque des revendications 3 à 5, caractérisée en ce que les éléments flexibles comprennent des sangles de siège (16-18), des pièces de tissu ou des couches de matériau similaire ou un ou plusieurs éléments en forme de feuilles.
  7. Chaise selon l'une quelconque des revendications 3 à 6, caractérisée en ce que les longueurs d'arc des éléments flexibles (16-18) mesurées d'un élément latéral (22) à un élément latéral (23) sont ajustables.
  8. Chaise selon la revendication 7, caractérisée en ce que les longueurs d'arc sont ajustables localement à diverses longueurs depuis le bord avant du siège.
  9. Chaise selon la revendication 7 ou la revendication 8, caractérisée en ce qu'il y a plusieurs éléments flexibles (16-18) à différentes distances du bord avant du siège, et en ce que les longueurs d'arc des éléments peuvent être ajustées individuellement.
  10. Chaise selon l'une quelconque des revendications précédentes, caractérisée en ce que la structure de support de la portion arrière du siège comprend des sangles de siège (16-18), chacune comprenant deux portions pourvues d'attaches à barbes pour obtenir une ajustabilité des longueurs efficaces des sangles de siège en réunissant les attaches à barbes dans différentes positions.
  11. Chaise selon l'une quelconque des revendications précédentes, caractérisée en ce que la longueur du siège (10) mesurée depuis son bord avant jusqu'au bord arrière du retrait (13) est ajustable.
  12. Chaise selon la revendication 11, caractérisée en ce que la longueur du siège est ajustée en ajustant la longueur du retrait (13).
  13. Chaise selon l'une quelconque des revendications précédentes, caractérisée en ce que l'extrémité arrière du siège est essentiellement à la hauteur du fond du retrait (13).
  14. Chaise selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend en outre un dossier (34) qui est prévu pour venir en butée contre le dos de l'utilisateur en face du bord supérieur du pelvis (4).
  15. Chaise selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend en outre un dossier (34) avec une structure de support qui comprend essentiellement des sangles de dossier (48-50) s'étendant horizontalement, qui sont suspendues entre deux colonnes (54-55) essentiellement verticales s'étendant essentiellement le long des bords droit et gauche du dossier, respectivement.
  16. Chaise selon la revendication 15, caractérisée en ce que la courbure (56-57) du dossier est ajustable en ajustant les longueurs efficaces des sangles du dossier (48-50).
  17. Chaise selon la revendication 15 ou la revendication 16, caractérisée en ce que l'angle du dossier (34) est ajustable, de préférence en ce que l'angle des colonnes (54-55) avec la verticale est ajustable (46-47) dans ou près d'un plan vertical parallèle au plan de symétrie longitudinal vertical du siège.
  18. Chaise selon l'une quelconque des revendications 14 à 17, caractérisée en ce qu'elle présente une partie ouverte entre le bord arrière du siège (10) et le bord inférieur du dossier (34) afin qu'aucune partie de la chaise ne vienne en butée contre des portions du postérieur de la personne faisant face vers l'arrière.
  19. Chaise selon l'une quelconque des revendications 14 à 18, caractérisée en ce que le dossier (34) peut être déplacé (43) dans la direction longitudinale du siège lorsque l'utilisateur est assis sur la chaise, l'utilisateur pouvant forcer le dossier vers l'avant contre la portion supérieure du pelvis après avoir pris sa position assise.
EP01919236A 2000-04-05 2001-04-04 Chaise Expired - Lifetime EP1272071B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK01919236T DK1272071T3 (da) 2000-04-05 2001-04-04 En stol

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK200000575 2000-04-05
DKPA200000575 2000-04-05
PCT/DK2001/000227 WO2001076420A1 (fr) 2000-04-05 2001-04-04 Chaise

Publications (2)

Publication Number Publication Date
EP1272071A1 EP1272071A1 (fr) 2003-01-08
EP1272071B1 true EP1272071B1 (fr) 2004-12-29

Family

ID=8159405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01919236A Expired - Lifetime EP1272071B1 (fr) 2000-04-05 2001-04-04 Chaise

Country Status (5)

Country Link
EP (1) EP1272071B1 (fr)
AT (1) ATE285696T1 (fr)
AU (1) AU2001246396A1 (fr)
DE (1) DE60108092D1 (fr)
WO (1) WO2001076420A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2386319B (en) * 2002-03-14 2005-02-09 Alexander Neil Paterson Seat with self adjusting seat contour
US6869142B2 (en) 2002-09-12 2005-03-22 Steelcase Development Corporation Seating unit having motion control
DE20216118U1 (de) * 2002-10-18 2003-03-13 Benn Herbert Sitz- oder Liegegelegenheit für einen Menschen
GB201110748D0 (en) 2011-06-24 2011-08-10 Freedman Simon A A seat
JP6453414B2 (ja) * 2017-10-04 2019-01-16 テイ・エス テック株式会社 シートクッション及び車両用シート

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1836630A (en) * 1928-07-16 1931-12-15 Thum Martin Chair
US4529247A (en) * 1982-04-15 1985-07-16 Herman Miller, Inc. One-piece shell chair
DE3622272A1 (de) * 1986-07-03 1988-01-21 Porsche Ag Stuhl, insbesondere buerostuhl
US5058952A (en) * 1990-11-29 1991-10-22 Lasota Laurence Conformable seat with pivotal belt support
SE521323C2 (sv) * 1998-05-15 2003-10-21 Mercado Medic Ab Anordning vid en stol
SE512805C2 (sv) * 1998-09-10 2000-05-15 Bertil Jonsson Stol

Also Published As

Publication number Publication date
DE60108092D1 (de) 2005-02-03
EP1272071A1 (fr) 2003-01-08
AU2001246396A1 (en) 2001-10-23
ATE285696T1 (de) 2005-01-15
WO2001076420A1 (fr) 2001-10-18

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