EP2095741B1 - Siège de bureau - Google Patents

Siège de bureau Download PDF

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Publication number
EP2095741B1
EP2095741B1 EP09000354A EP09000354A EP2095741B1 EP 2095741 B1 EP2095741 B1 EP 2095741B1 EP 09000354 A EP09000354 A EP 09000354A EP 09000354 A EP09000354 A EP 09000354A EP 2095741 B1 EP2095741 B1 EP 2095741B1
Authority
EP
European Patent Office
Prior art keywords
seat
chair
back rest
coupling
backrest
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.)
Not-in-force
Application number
EP09000354A
Other languages
German (de)
English (en)
Other versions
EP2095741A1 (fr
Inventor
Andreas Krob
Joachim BRÜSKE
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.)
Thonet GmbH
Original Assignee
Thonet GmbH
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
Application filed by Thonet GmbH filed Critical Thonet GmbH
Publication of EP2095741A1 publication Critical patent/EP2095741A1/fr
Application granted granted Critical
Publication of EP2095741B1 publication Critical patent/EP2095741B1/fr
Not-in-force legal-status Critical Current
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
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office 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
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03233—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of a rack-and-pinion or like gearing mechanism
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs

Definitions

  • the invention relates to a chair or armchair, in particular an office chair or chair with tilting backrest.
  • the chair can be arranged on a flat floor surface.
  • the plane bottom surface is defined by the two orthogonal direction vectors of the x and y direction of a Cartesian coordinate system.
  • the x-direction coincides substantially with the viewing direction of a user of the chair, ie, the x-direction points to the front.
  • the y-direction is perpendicular to the x-direction and is essentially to the left as seen by the user. To the right, so perpendicular to the bottom surface, the z-direction extends upward, ie opposite to the direction of gravity.
  • Extent and / or displacement direction (s) can be given in relation to the orthogonal Cartesian coordinate system thus defined.
  • the term “substantially” means that the direction to be indicated is less than about ⁇ 20 degrees, preferably less than about ⁇ 15 degrees, of the referenced direction differs by less than about ⁇ 10 degrees, and more preferably by less than about ⁇ 5 degrees, in particular by less than about ⁇ 2 degrees.
  • the term “substantially” may in particular describe a slight deviation from a desired value, in particular a deviation within the manufacturing accuracy and / or in the context of the necessary accuracy, so that an effect is maintained as it is present at the desired value.
  • the term “substantially” may therefore include a deviation of less than about 30%, less than about 20%, less than about 10%, less than about 5%, less than about 2%, preferably less than about 1% of a desired value or set position, etc. include.
  • the term “substantially” includes the term “identical,” i. without deviation from a desired value, a desired position, etc.
  • the direction to be specified differs from the reference direction by less than ⁇ 15 degrees, and preferably by less than ⁇ 10 degrees, more preferably deviates by less than ⁇ 5 degrees, more preferably by less than ⁇ 2 degrees, in particular by less than ⁇ 1 degree.
  • positions and directions are exemplary and serve in particular as a reference for describing eg sides and extensions of the chair and / or for the determination of directions, for example, to specify clearly definable or determinable coordinates. If necessary, other positions or a different coordinate system can also be used.
  • a seat carrier extends substantially parallel to the bottom surface.
  • the longitudinal extension S of a seat support is essentially the spatial extent in the direction of the chair user, ie oriented substantially along the x-direction.
  • the transverse extension is oriented, which extends substantially from the chair user from right to left, that extends substantially along the y-direction.
  • a seating surface disposed on the seat supports extends substantially parallel to the floor surface.
  • the seat surface essentially extends between two seat carriers, wherein the seat carriers can be arranged along the viewing direction of the chair user on the right and left edge region of the seat surface.
  • the seat is a stretchable or resilient covering between two seat supports.
  • the backrest extends in an upright position substantially perpendicular to the bottom surface and substantially parallel to a plane defined by the y and z directions.
  • the longitudinal extent R of the backrest is essentially the spatial extension along the spine of the chair user, i. essentially along the z-direction, oriented.
  • Substantially perpendicular to the longitudinal extent R of the backrest, the transverse extent of the backrest is oriented, which extends substantially from the chair user from right to left, that extends substantially along the y-direction.
  • first position describes, for example, the state or the position of one or more components, in particular of the seat support and the backrest.
  • first position particularly describes that position when the backrest is in an upright position. In other words, the first position corresponds to the position in which the chair is located when a user wishes to sit upright on it.
  • second position as used in the context of the present invention describes, for example, a state different from the aforementioned state or the aforementioned position or position of the aforementioned components, in particular the backrest.
  • the backrest In contrast to the first position, in the second position, the backrest is inclined further to the rear, ie inclined in the opposite direction to the x-direction.
  • the second position can be achieved by applying a force against the x direction on the backrest. Due to the applied force, in particular, the backrest moves, for example, from the first to the second position.
  • the components in particular the backrest, can be brought into any intermediate position between the first and the second position and preferably fixed in this intermediate position.
  • the chair is designed to be resilient, ie it is designed so that it returns to the backrest substantially after the action of a force against the x-direction back to the first position.
  • the seat support is tiltable relative to the base support, wherein the tilt axis of the seat support coincides in particular substantially with the y-direction.
  • the base support is arranged on a chair foot and in particular can not be tilted relative to the floor surface.
  • the chair may comprise two or more tension spring levers and three or more coupling levers, wherein in particular the tension spring lever and the coupling levers are respectively arranged on the right and left side of the seat support.
  • This advantageously keeps the central space below the seat support free.
  • the minimum distance or the height of the free space between the lower edge of the seat support and the upper edge of the base support is greater than about 1 cm, greater than about 2 cm, more preferably greater than about 5 cm and in particular greater than about 10 cm.
  • the tie rods are designed to absorb both tensile and compressive loads to actuate or displace the backrest by pulling or pushing in two directions.
  • the tie rods are substantially rigid.
  • the tie rods could also be referred to as push rods or pull / push rods.
  • the chair may have three, four, five, six or more pull rods and three, four, five, six or more pull levers, wherein the pull rods and pull levers are respectively arranged on the right and left sides of the seat support.
  • the tie rods can be arranged substantially along the longitudinal extension S of the seat support on the outer sides of the seat support or in Switzerlandstangenkanälen so that the tie rods do not affect a closed contour of the seat support.
  • the upper sheet guide, the lower sheet guide and the backrest support are designed such that the backrest support and the backrest are movable exclusively along a circular path around the center of the circle H.
  • the pelvis and the vertebrae of the chair user are advantageously supported at different inclinations of the backrest.
  • a rotation of the pelvis to the rear is avoided.
  • the consequence of a Pelvic rotation is a "hunchback" that particularly affects the intervertebral discs of the lumbar vertebrae. Consequently, this preferred embodiment of the chair is particularly back-friendly.
  • the seat support and the backrest are designed such that the pivot point D of the hip joint of a user of the chair coincides approximately with the spatial position of the circle center point H.
  • the distance between H and D is less than about 5 cm, more preferably less than about 3 cm and especially less than 2 cm.
  • all areas of the pelvis and the spine are supported in all inclination positions and during the tilting movement of the backrest.
  • the distance between the bottom surface on which the chair is, and the front seat coupling axis in inclination of the backrest support and / or the seat support is variable or changeable.
  • the front seat coupling axis is arranged on the coupling levers that changes the distance upon rotation of the coupling lever.
  • the distance of the seat coupling axis is reduced to the bottom surface when the seat support or the seat and / or the backrest is tilted backwards.
  • the distance between the seat front edge and the bottom surface remains substantially constant, so that when reclining the chair user, the area of the lower thigh and the knee area is not raised substantially by the front seat.
  • a pressure on the lower thigh is avoided and the blood supply to the lower leg is not affected, so that the seating comfort is increased.
  • the chair mechanism is formed substantially mirror-symmetrical to a plane in the xz-direction, which extends through the central axis of the Stuhifußes.
  • the chair mechanism comprises the seat support, the at least one tension spring lever and the coupling lever.
  • the chair mechanism comprises the pull lever and the tie rods and in particular the backrest support.
  • the mirror-symmetrical design of the chair mechanism leads to an increased torsional freedom of the individual components, since the acting forces are distributed symmetrically and torsional or torsional forces compensate each other to a first approximation. As a result, the entire chair mechanism is advantageously produced with less material consumption and a slimmer design is made possible.
  • the at least two coupling levers each have a first coupling means which is designed to engage with a second coupling means of one of the at least two pull levers and / or to be connected to one another in a force-locking manner.
  • the first coupling means is formed as a series of equidistant projections or as a row of equidistant recesses.
  • the projections of the first coupling means are designed to engage in corresponding recesses of the second coupling means.
  • the recesses of the first coupling means are designed so that projections of the second coupling means can engage in them.
  • the first coupling means is formed as a row of teeth or as a circular arc portion of a gear.
  • the second coupling means is formed in this case as a corresponding counter-tooth row or gear portion, so that in particular both coupling means are non-positively connected.
  • the seat support is tiltable about a tilt axis so that a seat angle ⁇ of about 70 ° to about 110 ° degrees, more preferably from about 80 ° to about 100 ° degrees, is included between the z-direction and the longitudinal extent S of the seat carrier. More preferably, the seat angle ⁇ is in a range of about 85 degrees to about 95 degrees.
  • the longitudinal extent S of the seat carrier extends substantially along the x-direction and is tilted to a limited extent with respect to the x-direction.
  • the backrest is tiltable about a tilt axis, so that between the z-direction and the longitudinal extent R of the backrest a backrest angle ⁇ is included from about 0 ° to about 55 ° degree. More preferably, the seat back angle ⁇ is in a range of about 5 degrees to about 40 degrees.
  • the changes in the seat angle ⁇ and the changes in the backrest angle ⁇ are in a constant relationship with each other, the ratio ⁇ / ⁇ being between about 2 and about 4.
  • the ratio ⁇ / ⁇ being between about 2 and about 4.
  • the inclination of the backrest takes place together with the inclination of the seat support.
  • ⁇ is equal to 30 degrees.
  • the changes in the seat angle ⁇ are therefore 10 degrees.
  • the ratio ⁇ / ⁇ is between about 2.2 and about 3.7, between about 2.5 and about 3.5, between about 2.7 and about 3.3, and most preferably about 3.
  • FIG. 1 shows a perspective view of the mechanics of a first embodiment of a chair 1.
  • the chair 1 comprises a chair foot 2, which is preferably adjustable in height, a base support 3, two seat support 4, two backrest support 5 and a backrest. 6
  • the backrest supports 5 or the backrest 6 have or in particular have a stiffening element 7 in order to connect the two backrest supports with one another and to increase the dimensional stability of the backrest 6.
  • the backrest 6 may preferably be integrally formed with the backrest supports 5 and in particular with the stiffening element 7.
  • a backrest support 5 is movably mounted between an upper sheet guide 45 and a lower sheet guide 46, which are each arranged on a seat support 4, in each case a backrest support 5 is movably mounted.
  • a pull rod 50 is hinged to one Backrest support 5 is arranged and hingedly connected to a pull lever 30.
  • the two pull levers 30 are arranged on the main axis 14 and coupled to the coupling levers 20.
  • FIG. 2 shows a side view of the mechanism of the first embodiment of the chair 1 in a first position, as in FIG. 1 shown.
  • the chair mechanism In the first position, the chair mechanism is in such a position that a user can sit on the chair 1 in an upright sitting position.
  • the seat support 4 has a longitudinal extent S, which extends approximately parallel to the x-direction and substantially perpendicular to the z-direction and a second extension along the y-direction, so that a plane spanned by the upper edge of the seat support 4 in the plane extends substantially horizontally.
  • the seat support 4 is tiltable about a tilting axis that runs along the y-direction, so that between the z-direction and the longitudinal extension S of the seat support 4, a seat angle ⁇ 1 is included, wherein the angle ⁇ 1 in the first position in the area from about 80 ° to about 110 ° degrees, in particular about 90 ° degrees.
  • the backrest 6 has a longitudinal extent R which extends approximately parallel to the z-direction and substantially perpendicular to the x-direction and a second extent along the y-direction so that a plane defined by the backrest 6 is substantially vertical extends.
  • the backrest 6 is tiltable about a tilting axis or axis of rotation which runs along the y-direction.
  • the backrest support 5 is at least partially guided by the upper and lower sheet guide 45, 46 circular.
  • the common circle center H of the arc sections of the upper and lower sheet guide 45, 46 is arranged at a radius R H spaced from the upper sheet guide 45.
  • the backrest 6 is thus rotatably mounted about the circle center H. In particular, there is no translational relative movement between the circle center H and the backrest 6.
  • a seat back angle is ⁇ 1 is enclosed in the first position, wherein the angle ⁇ 1 in the first position in the range of about 0 ° to about 25 ° degrees, in particular about 6 degrees, is. Consequently, between the longitudinal extension R of the backrest 6 and the longitudinal extent S of the seat support 4, an opening angle ⁇ 1 is included, which in the first position in the range of about 80 ° to about 135 °, in particular about 96 ° degrees.
  • the minimum backrest angle ⁇ 1 of less than 25 degrees is achieved when the pull rod 50 is in an extreme position opposite to the x direction, ie at the rear.
  • the circle center H of the sheet guides 45, 46 of the seat support 4 is in a spatial position close to the z-axis of the chair foot 2.
  • the distance against the z-direction to the seat support 4 and the distance against the x Direction to the backrest 6 and the backrest support 5 in about the same size.
  • FIG. 3 shows a side view of the mechanism of the first embodiment of the chair 1 in a second position.
  • the chair mechanism In the second position, the chair mechanism is in such a position that a user can sit on the chair 1 in a reclined sitting position.
  • the longitudinal extent S of the seat support 4 with the z-direction includes a seat angle ⁇ 2 of about 70 ° to about 90 ° degrees, in particular about 80 ° degrees.
  • the longitudinal extent R of the backrest 6 in the second position with the z-direction includes a backrest angle ⁇ 2 of about 20 ° to about 55 °, in particular about 36 °, a.
  • an opening angle ⁇ 2 of about 100 ° to about 155 °, in particular about 116 ° degrees included.
  • the maximum backrest angle ⁇ 2 is achieved when the pull rod 50 is in an extreme position in the x-direction, ie in front.
  • the circle center H is in a spatial position, which is compared to the first position further against the x-direction of the z-axis of the chair foot second is removed.
  • the distance from the z-direction to the seat support and the distance against the x-direction to the backrest 6 and the backrest support 5 in the second position is approximately the same size from the circle center H.
  • the ratio of the angle changes ⁇ / ⁇ is in particular between about 2 and about 4, more preferably between about 2.5 and about 3.5, and particularly preferably about 3.
  • circle center H shifts in the transition from the first to the second position opposite to the x-direction, so that its distance from the backrest 6 does not increase.
  • the circle center H is arranged so that it coincides approximately with the spatial position of the pivot point D of the hip joint of a user of the chair 1.
  • the distance between H and D is less than about 5 cm, more preferably less than about 3 cm and especially less than 2 cm.
  • the radius R H of the upper sheet guide 45 ie the distance of the circle center H to the seat support or the backrest support, in a range of about 6 cm to about 20 cm, more preferably in a range of about 8 cm to about 18 cm, more preferably in a range of about 10 cm to about 15 cm, in particular in a range of about 11 cm to about 13 cm.
  • FIG. 4 shows a detailed side view of the mechanism of the first embodiment of the chair 1 in a first position, as in FIG. 2 shown.
  • the seat support 4 is connected on the one hand via two tension spring lever 10 and the other via two coupling lever 20 with the base support 3 articulated.
  • Each Huaweifederhebel 10 has at one end a Wegkoppelachsenlager Scheme 11, at the opposite end of a Ceifederachsenlager Scheme 12 and intervening a Hauptachsenlager Complex 13.
  • Each Huaweifederhebel 10 is mounted on the main axis bearing portion 13 mounted in the main axis 14 with the Base support 3 rotatably connected.
  • the tension spring lever 10 is connected to the base support 3 via the tension spring axle 15 mounted in the tension spring axle bearing region 12, the tension spring 16 and the tension spring suspension 17.
  • the Wegoppelachsenlager Scheme 11 of the tension spring lever 10 is pivotally connected to the seat support 4 via the seat coupling axis 18 and the rear seat coupling bearing 41.
  • Each coupling lever preferably has a substantially angular shape with two legs.
  • the coupling lever 20 also has at one end of a leg on a Wegkoppelachsenlager Scheme 21, with which it is articulated via the front seat coupling axis 22 and the front seat coupling bearing 42 with the seat support 4.
  • the at least one coupling lever 20 has a base coupling axle bearing region 23, which receives the base coupling axle 24, so that the at least one coupling lever 20 is rotatably connected to the base support 3 via the base coupling axle 24.
  • the at least one coupling lever 20 has a first coupling means 25, which is designed to engage with a second coupling means 35 of a pulling lever 30.
  • the at least one pull lever 30 preferably has an angular shape with two legs.
  • the at least one pull lever 30 has at one end of a leg to a drawbar storage area 31, on which a pull rod 50 is pivotally connected to the pull lever 30.
  • the at least one pull lever 30 has a main axis bearing portion 33 which receives the main shaft 14, so that the pull lever 30 is rotatably connected to the base support 3 via the main shaft 14.
  • the at least one pull lever 30 has the second coupling means 35, which is designed to engage with the first coupling means 25 of the at least one coupling lever 20.
  • the first coupling means 25 is formed as a series of equidistant projections or teeth or a circular arc portion of a gear.
  • the second coupling agent 35 may be formed in the first embodiment as an opposite to the first coupling agent equidistant series of recess or as a tooth or row of teeth or also as a circular arc portion of a gear, wherein the first coupling means 25 is in engagement with the second coupling means 35.
  • the drawbar 50 connected thereto is movable substantially in or counter to the x-direction.
  • the pull rod 50 is connected via an articulated connection 51 with the backrest 5.
  • the backrest support 5 has a positively guided region 52 with guided elements 53, which is movable within an upper sheet guide 45 and a lower sheet guide 46 of the seat support 4, in particular around the circle center H is rotatable.
  • the guided elements 53 can be embodied in particular as rollers which are arranged on stub axles or axes which are arranged in the positively guided region 52.
  • the rollers may be displaced, in particular, by rolling or sliding between the upper sheet guide 45 and the lower sheet guide 46. If the diameter of the rollers chosen smaller than the distance between the upper and lower sheet guide 45, 46, for example, by 1/10 to 1/2 millimeter, the displacement will be advantageously carried out substantially by rolling and thus be particularly frictionless.
  • the tension spring 16 is contracted and relaxed with the at least one tie rod 50 in an extreme spatial position in the x direction and the seat support substantially horizontal, i. substantially parallel to the x-y plane.
  • FIG. 5 shows a detailed side view of the mechanism of the first embodiment of the chair 1 in a second position, as in FIG. 3 shown.
  • the continuous transition of the seat support 4 remains over the upper sheet guide 45 to the backrest support 5 in the transition from the first position Fig. 4 obtained in the second position. That is, by the Sheet guides 45, 46 a translational movement of the backrest support 5 and the backrest 6 along the direction of the radius vector R H is prevented. As a result, there is advantageously no discontinuity or an edge in the chair upholstery in the region of the transition between the seat support and the backrest, which would disadvantageously lead to a reduction of the sitting comfort.
  • the front edge 43 of the seat support 4 relative to the front seat coupling axis 22 in the z-direction, ie displaced upwards.
  • the front seat coupling shaft 22 is correspondingly displaced by the rotation of the coupling lever 20 counter to the z-direction, ie, down.
  • the position of the leading edge 43 of the seat carrier remains substantially constant, ie, it is displaced in magnitude along the z-direction less than about 2 cm, more preferably less than about 1 cm, and most preferably less than about 5 mm.
  • FIG. 6 shows a side view of the mechanism of a second embodiment of the chair 1 in a first position.
  • the chair 1 is designed substantially in accordance with the first embodiment, as in particular FIG. 4 is shown.
  • the to FIG. 4 corresponding parts are therefore provided with the same reference numerals.
  • the at least one coupling lever 20 has a preferred first coupling means 25 and the at least one pulling lever 30 a preferred second coupling means 35, wherein the coupling means 25, 35 which are adapted to engage each other.
  • the first coupling means 25 is formed as a pin 26 or stub axle 26.
  • the connecting line between the pin 26 and the base coupling axle bearing portion 23 and the connecting line between the seat coupling axle bearing portion 21 and the base coupling axle bearing portion 23 form an angle ⁇ which is different from 180 degrees. More preferably, ⁇ is between about 30 and about 150 degrees, and more preferably between about 80 and about 110 degrees.
  • the second coupling means 35 is formed in the first embodiment as a recess 36 in the pull lever 30, in which the pin 26 engages.
  • the recess 36 is preferably elongated, in particular substantially rectangular, formed, so that the extension in the direction K of the short side of the recess 36 is approximately equal to the diameter of the pin 26.
  • the recess 36 is arranged such that the direction L of the longitudinal extension, i. the extension in the direction of the long side, the recess 36 coincides with an emanating from the main axis 14 radius vector of the main axis 14.
  • the pin 26 can be moved substantially only in or counter to the direction L of the longitudinal extension of the recess 36, ie radially away from the main axis 14 or towards it.
  • FIG. 7 shows a side view of the mechanism of a second embodiment of the chair 1 in a second position similar to that in the Figures 3 and 5 shown position. Also in the in the FIGS. 6 and 7 In the embodiment shown, when the backrest support 5 is tilted back, the seat coupling axle 22 is displaced counter to the z direction, ie, to prevent lifting of the lower thigh or the knee of the chair user by the front edge 43 of the seat support when leaning back.

Claims (11)

  1. Siège, en particulier un siège de bureau pivotant, comprenant :
    - au moins deux supports de siège (4), comprenant en outre respectivement un guidage en courbe supérieur (45) et un guidage en courbe inférieur (46) ;
    - au moins deux supports de dossier (5), comprenant en outre respectivement une zone à guidage forcé (52) ;
    - un dossier (6) disposé sur les supports de dossier (5), dans lequel
    - la zone à guidage forcé (52) des supports de dossier (5) est guidée respectivement entre le guidage en courbe supérieur (45) et le guidage en courbe inférieur (46) des supports de siège correspondants (4), de sorte que les supports de dossier (5) sont inclinables par rapport aux supports de siège (4), dans lequel
    - le guidage en courbe supérieur (45) et le guidage en courbe inférieur (46) sont formés au moins par endroits en tant que section d'arc de cercle et dans lequel
    - la section d'arc de cercle du guidage en courbe supérieur (45) et la section d'arc de cercle du guidage en courbe inférieur (46) présentent le même centre de cercle H ;
    - un support de base (3) ; caractérisé par
    - au moins un levier à ressort de traction (10), qui est raccordé de manière articulée au support de siège (4) au moyen d'un axe arrière de couplage de siège (18) ;
    - au moins deux leviers de couplage (20), qui sont raccordés de manière articulée au support de siège (4) au moyen d'un axe avant de couplage de siège (22), dans lequel
    - le au moins un levier à ressort de traction (10) est raccordé de manière articulée au support de base (3) au moyen d'un axe principal (14) et les au moins deux leviers de couplage (20) sont raccordés de manière articulée au support de base (3) au moyen d'un axe de couplage de base (24) ;
    - au moins deux barres de traction (50), qui sont disposées de manière articulée sur le au moins un support de dossier (5) et
    - au moins deux leviers de traction (30), qui sont disposés sur l'axe principal (14) et qui sont raccordés de manière articulée respectivement aux au moins deux barres de traction (50).
  2. Siège selon la revendication 1, dans lequel le guidage en courbe supérieur (45), le guidage en courbe inférieur (46) et le support de dossier (5) sont conçus de telle façon que le support de dossier (5) et le dossier (6) ne sont mobiles que le long d'une trajectoire circulaire autour du centre de cercle (H).
  3. Siège selon l'une des revendications 1 ou 2, dans lequel le support de siège (4) et le dossier (6) sont conçus de telle façon que le centre de rotation (D) de l'articulation de la hanche d'un utilisateur du siège (1) coïncide à peu près avec la situation dans l'espace du centre de cercle (H).
  4. Siège selon l'une des revendications précédentes, dans lequel la distance entre une surface de plancher, sur laquelle se trouve le siège (1), et l'axe avant de couplage de siège (22) est modifiable lors de l'inclinaison des supports de dossier (5) et/ou des supports de siège (4).
  5. Siège selon l'une des revendications précédentes, dans lequel la mécanique du siège est formée essentiellement de manière symétrique par rapport à un plan dans la direction x-z, qui passe par l'axe central du pied de siège (2).
  6. Siège selon l'une des revendications précédentes, dans lequel
    les au moins deux leviers de couplage (20) présentent respectivement un premier moyen de couplage (25) qui est conçu pour venir en prise avec un second moyen de couplage (35) de l'un des au moins deux leviers de traction (30).
  7. Siège selon la revendication 6, dans lequel
    le premier moyen de couplage (25) est formé en tant que série de saillies équidistantes ou en tant que série d'évidements équidistants.
  8. Siège selon la revendication 6, dans lequel
    le premier moyen de couplage (25) est formé en tant que rangée de dents ou en tant que section d'arc de cercle d'une roue dentée.
  9. Siège selon l'une des revendications précédentes, dans lequel
    le support de siège (4) est inclinable autour d'un axe de basculement, de sorte qu'entre la direction z et l'extension longitudinale (S) du support de siège (4) est inclus un angle de siège (β) d'environ 70° à environ 110°.
  10. Siège selon l'une des revendications précédentes, dans lequel
    le dossier (6) est inclinable autour d'un axe de basculement, de sorte qu'entre la direction z et l'extension longitudinale (R) du dossier (6) est inclus un angle de dossier (γ) d'environ 0° à environ 55°.
  11. Siège selon la revendication 10, dans lequel
    les modifications de l'angle de siège (Δβ=β2-β1) et les modifications de l'angle de dossier (Δγ=γ2-γ1) se trouvent dans un rapport constant les unes par rapport aux autres, le rapport Δγ/Δβ étant entre environ 2 et environ 4.
EP09000354A 2008-02-27 2009-01-13 Siège de bureau Not-in-force EP2095741B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008011309A DE102008011309B3 (de) 2008-02-27 2008-02-27 Bürostuhl

Publications (2)

Publication Number Publication Date
EP2095741A1 EP2095741A1 (fr) 2009-09-02
EP2095741B1 true EP2095741B1 (fr) 2010-10-27

Family

ID=40481872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09000354A Not-in-force EP2095741B1 (fr) 2008-02-27 2009-01-13 Siège de bureau

Country Status (7)

Country Link
US (1) US8070230B2 (fr)
EP (1) EP2095741B1 (fr)
JP (1) JP2009201988A (fr)
AT (1) ATE485742T1 (fr)
CA (1) CA2648254A1 (fr)
DE (2) DE102008011309B3 (fr)
DK (1) DK2095741T3 (fr)

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US9004597B2 (en) 2012-09-20 2015-04-14 Steelcase Inc. Chair back mechanism and control assembly

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DE102008011309B3 (de) 2008-02-27 2009-06-04 Thonet Gmbh Bürostuhl
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
US9706845B2 (en) 2012-09-20 2017-07-18 Steelcase Inc. Chair assembly
US9604553B2 (en) * 2012-12-11 2017-03-28 Ford Global Technologies, Llc Virtual H-point seat back system
DE202014008314U1 (de) 2014-10-20 2014-10-28 Kinema Gmbh Sitz- und Stützmöbel
DE102014015415B3 (de) * 2014-10-20 2015-11-19 Kinema Gmbh Sitz- und Stützmöbel
DE202015007195U1 (de) 2014-10-20 2015-11-23 Kinema Gmbh Sitz- und Stützmöbel
USD777494S1 (en) 2015-05-22 2017-01-31 Davis Furniture Industries, Inc. Chair frame
US9713381B2 (en) 2015-06-11 2017-07-25 Davis Furniture Industries, Inc. Chair
DE102015111946A1 (de) * 2015-07-22 2017-01-26 Bock 1 Gmbh & Co. Kg Mechanik für einen Bürostuhl
WO2018041256A1 (fr) * 2016-09-01 2018-03-08 永艺家具股份有限公司 Structure de chaise et chaise
USD826586S1 (en) * 2016-12-21 2018-08-28 Koleksiyon Mobilya Sanayi Anonim Sirketi Office chair
DE202017102909U1 (de) * 2017-01-04 2018-04-05 Design Ballendat Gmbh Stuhl mit einteiliger Sitzschale
US10667969B2 (en) 2018-01-16 2020-06-02 Kinetic Innovative Seating System Llc Ergonomically designed seating apparatus
US10485346B2 (en) * 2018-01-22 2019-11-26 Knoll, Inc. Chair tilt mechanism
EP3741258A1 (fr) * 2019-05-20 2020-11-25 BOCK 1 GmbH & Co. KG Chaise pourvue de mécanisme d'inclinaison de l'assise
CN115251633A (zh) * 2022-06-13 2022-11-01 嘉兴品智智能家居有限公司 便于拆装的沙发

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Publication number Priority date Publication date Assignee Title
US9004597B2 (en) 2012-09-20 2015-04-14 Steelcase Inc. Chair back mechanism and control assembly
US9010859B2 (en) 2012-09-20 2015-04-21 Steelcase Inc. Chair assembly
US9022476B2 (en) 2012-09-20 2015-05-05 Steelcase Inc. Control assembly for chair
US9027998B2 (en) 2012-09-20 2015-05-12 Steelcase Inc. Chair assembly
US9027999B2 (en) 2012-09-20 2015-05-12 Steelcase Inc. Control assembly for chair
US9027997B2 (en) 2012-09-20 2015-05-12 Steelcasel Inc. Chair assembly
US9049935B2 (en) 2012-09-20 2015-06-09 Steelcase Inc. Control assembly for chair
USD742677S1 (en) 2012-09-20 2015-11-10 Steelcase Inc. Chair
USD742676S1 (en) 2012-09-20 2015-11-10 Steelcase Inc. Chair
US9345328B2 (en) 2012-09-20 2016-05-24 Steelcase Inc. Chair assembly with upholstery covering
US9451826B2 (en) 2012-09-20 2016-09-27 Steelcase Inc. Chair assembly
US9462888B2 (en) 2012-09-20 2016-10-11 Steelcase Inc. Control assembly for chair
US9492013B2 (en) 2012-09-20 2016-11-15 Steelcase Inc. Chair back mechanism and control assembly

Also Published As

Publication number Publication date
ATE485742T1 (de) 2010-11-15
DK2095741T3 (da) 2011-01-31
CA2648254A1 (fr) 2009-08-27
DE102008011309B3 (de) 2009-06-04
US20090212617A1 (en) 2009-08-27
DE502009000143D1 (de) 2010-12-09
US8070230B2 (en) 2011-12-06
JP2009201988A (ja) 2009-09-10
EP2095741A1 (fr) 2009-09-02

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