EP3345507B1 - Mechanism for a chair - Google Patents

Mechanism for a chair Download PDF

Info

Publication number
EP3345507B1
EP3345507B1 EP18000037.4A EP18000037A EP3345507B1 EP 3345507 B1 EP3345507 B1 EP 3345507B1 EP 18000037 A EP18000037 A EP 18000037A EP 3345507 B1 EP3345507 B1 EP 3345507B1
Authority
EP
European Patent Office
Prior art keywords
support element
seat support
backrest
seat
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.)
Active
Application number
EP18000037.4A
Other languages
German (de)
French (fr)
Other versions
EP3345507A1 (en
Inventor
Hermann Bock
Martin Ballendat
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.)
Bock 1 GmbH and Co KG
Original Assignee
Bock 1 GmbH and Co KG
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 Bock 1 GmbH and Co KG filed Critical Bock 1 GmbH and Co KG
Publication of EP3345507A1 publication Critical patent/EP3345507A1/en
Application granted granted Critical
Publication of EP3345507B1 publication Critical patent/EP3345507B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • A47C1/034—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest
    • A47C1/035—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest in combination with movably coupled seat and back-rest, i.e. the seat and back-rest being movably coupled in such a way that the extension mechanism of the foot-rest is actuated at least by the relative movements of seat and backrest
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • 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
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/12—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats with shell-shape seat and back-rest unit, e.g. having arm rests

Definitions

  • the invention relates to a mechanism for a chair, in particular for an office chair.
  • the invention relates to a chair with such a chair mechanism.
  • the term synchronous mechanism is understood to mean assemblies in the seat substructure of an office chair which ensure kinematics which are coupled to one another and bring about a certain relative movement of the seat and backrest with respect to one another.
  • the seat of the office chair which is usually provided with a padded seat, is mounted on the seat support.
  • the backrest support which extends backwards from the actual synchronous mechanism in a conventional manner, carries the backrest of the office chair on a cantilever arm.
  • Seat support and backrest support are usually articulated so that a pivoting movement of the backrest to the rear - as can be caused, for example, by leaning the chair user against the backrest - induces a lowering movement of the rear edge of the seat downward. This prevents the so-called "shirt pull-out effect" and increases seating comfort.
  • asynchronous mechanics means assemblies in which pivoting the backrest does not cause the seat support to move. In other words, when swiveling backwards, only that moves Backrest.
  • the seating comfort is reduced compared to synchronous mechanisms.
  • the so-called “shirt pull-out effect” can occur in asynchronous mechanisms due to the "divergence" of the movements of the backrest and seat.
  • such assemblies are significantly cheaper to manufacture than the synchronous mechanisms described above.
  • Rocker mechanisms are comparatively simple assemblies in the seat substructure of chairs, in which the backrest support is more or less rigidly connected to the seat support, the seat or the frame of the chair.
  • the resulting seat support-backrest support combination can be pivoted backward about a pivot axis running transversely to the longitudinal direction of the chair by means of the rocker mechanism when the user of the chair is leaning against the backrest.
  • Such rocker mechanisms are often used instead of synchronous mechanisms in inexpensive visitor or conference chairs in order to implement a simple rocker function there. Because of their comparatively simple structure, rocker mechanisms are usually significantly cheaper to manufacture than the mechanisms described above.
  • An object of the present invention is to improve the seating comfort of chair mechanisms.
  • the invention creates a chair mechanism with improved seating comfort.
  • a core idea of the invention is, as an alternative or in addition to the above-described swiveling movement to the front and to the rear, to enable individual or more mechanical components to be tilted to the right and left.
  • a two-part seat support is provided for this.
  • a two-part backrest support is additionally provided and the desired transverse movement of the seat support is transmitted to the backrest support by suitable means or vice versa.
  • Fig. 1 shows a mechanism 1 for an office chair in side view in the non-pivoted and not inclined state.
  • Fig. 2 shows mechanics 1 Fig. 1 in a cross section along the line II-II.
  • Fig. 3 shows mechanics 1 Fig. 2 with a laterally inclined seat support element.
  • the mechanism 1 has a base support 2, which is placed on the upper end of a chair column (not shown) by means of a cone receptacle 3.
  • the mechanism 1 comprises a seat support 4 which is arranged on the base support 2 and can be moved forwards and backwards in the longitudinal direction 8 of the chair relative to the fixed base support 2.
  • the seat (not shown) of the office chair which is usually provided with a padded seat, is mounted on the seat support 4.
  • the seat support 4 comprises a first seat support element 6 and a second seat support element 7, the second seat support element 7 relative to the first seat support element 6 transversely to the longitudinal direction 8 of the chair, i.e. to the right and left, is movable.
  • the first seat support element 6 is the seat support base which is attached separately from the actual seat, an element of the seat support 4 which interacts with the base support 2.
  • the second seat support element 7 is the seat mounting element, which either encompasses the seat with a seat surface or, for example, embodied as a mounting plate, offers the prerequisites necessary for seat mounting.
  • the mechanism 1 also includes a backrest support 5, the is connected to the seat support 4 and the base support 2. Connected to the backrest support 5 is the backrest (not shown) of the office chair, which is usually provided with a padded leaning surface.
  • the backrest support 5 comprises a first backrest support element 9 and a second backrest support element 11, the second backrest support element 11 being rotatable (tiltable) relative to the first backrest support element 8 about an axis of rotation 12 (tilt axis) lying in the longitudinal direction 8 of the chair.
  • the first backrest support element 9 is the backrest support base, an element of the backrest support 5 which interacts with the base support.
  • the second backrest support element 11 is the backrest mounting element, which either encompasses the backrest with the leaning surface or - for example as a mounting adapter - offers the conditions necessary for backrest mounting.
  • the backrest support 5 is pivotally connected both to the rear end 13 of the first seat support element 6, as seen in the longitudinal direction 8 of the chair, and to the rear end 14 of the base support 2 about rear axes of rotation 15, 16 extending transversely to the longitudinal direction 8 of the chair, the connection area of the backrest support 5 between them two axes of rotation 15, 16 serves as a rear coupling element 17 between base support 2 and seat support 4.
  • a front coupling element 18 is pivotally connected both to the front end 21 of the base support 2, as seen in the longitudinal direction 8 of the chair, and to the front end 19 of the first seat support element 6 about front axes of rotation 22, 23 extending transversely to the longitudinal direction 8 of the seat.
  • the backrest support 5 Due to the described connection of the backrest support 5 to the seat support 4, the backrest support 5 has to be pivoted backwards in the pivoting direction 24, ie from an upright starting position ( 1, 2 , 4th , 8th , 12th ) in a rear swivel position ( Fig. 5 , 9 , 13 ) of the mechanism 1, a movement of the entire seat support 4 relative to the fixed base support 2, the seat support 4 being lowered at the rear and raised at the front in the example described here.
  • the manner in which the pivotable backrest support 5 is coupled to the first seat support element 6 and / or the base support 2 is irrelevant to the present invention. It can be a direct or an indirect connection. The same applies to the articulation of the backrest support 5 to the base support 2 and the seat support 4 and thus the specific configuration of the synchronous movement between the backrest and the seat.
  • the mechanism 1 is with respect to the central longitudinal plane 25 (see Fig. 2 ), as far as the actual kinematics are concerned, mirror-symmetrical. In this respect, it is always to be assumed in this description that construction elements of mechanics 1 are present in pairs on both sides. In the Fig. 2 and 3rd parts of the mechanism 1, in particular parts of the base support 2, are not shown for reasons of clarity.
  • the terms “pivoting movement, pivoting, pivoting axis” etc. relate to the movement of the backrest support 5 and the seat support 4 about axes of rotation 15, 16, 22, 23 extending transversely to the longitudinal direction of the chair 8 when the backrest support 5 is pivoted.
  • the terms “tilting movement, incline””Tiltaxis” etc. refer to the movement of the second seat support element 7 or the second Backrest support element 11 about axes of rotation 12, 33, 34, 35, 36 extending in the longitudinal direction 8 of the chair, wherein the tilting movement can comprise a rotary and a translatory component.
  • tilting movement can comprise a rotary and a translatory component.
  • tilt refers to the rotary part of the tilt movement.
  • the longitudinal direction 8 of the chair extends from the front of the chair 26 in the direction of the rear 27 of the chair.
  • the two seat support elements 6, 7 are arranged one above the other, in particular such that the second seat support element 7 is arranged on the first seat support element 6 or is arranged above the first seat support element 6 or is carried by the first seat support element 6.
  • the transverse movement system according to the invention can be used with an existing chair mechanism without major structural adjustments.
  • a second seat support element 7 can be placed as an additional component on an existing mechanical component, the seat support of the conventional mechanism forming the first seat support component 6 of the mechanical system 1 according to the invention.
  • the first seat support element 6 can be designed as a mechanical component which is articulated to the base support 2 or the backrest support 5 via axes 22, 15 extending transversely to the longitudinal direction 8 of the chair.
  • the first seat support element 6 can also be designed as a seat slide that can be moved in the longitudinal direction 8 of the chair; in this case it can be suitable for seat depth adjustment, for example.
  • the second seat support element 7 can be moved relative to the first seat support element 6 on a path curve 28 which is shown in FIG a plane 29 lies transversely to the longitudinal direction 8 of the chair, this plane 29 preferably being a vertical plane (see Fig. 1 ) acts.
  • the plane 29 can also be at an angle to the vertical.
  • the seat carried by the second seat support element 7 inclines sideways in the longitudinal direction 8 of the chair.
  • the specific design of the seat is irrelevant to the invention.
  • the tilting movement of the second seat support element 7 preferably comprises a translation and a rotation.
  • a sideways movement that is to say a movement of the second seat support element 7 transversely to the longitudinal direction 8 of the chair, is combined with a tilting or tilting movement of the second seat support element 7 relative to the first seat support element 6.
  • the second seat support element 7 is connected to the first seat support element 6 via at least one link arrangement.
  • the handlebar arrangement comprises two links 31, 32 (coupling elements), one of which is provided on each side of the vertical central longitudinal plane 25 of the chair.
  • Each link 31, 32 is articulated both on a first axis of rotation 33, 35 on the first seat support element 6 and on a second axis of rotation 34, 36 on the second seat support element 7, with all axes of rotation 33, 34, 35, 36 parallel to one another lie and in Chair longitudinal direction 8 run.
  • all axes of rotation 33, 34, 35, 36 run below the seat surface of the seat.
  • connection of the two seat support elements 6, 7 to one another takes place with the formation of a four-bar mechanism, whereby for the second seat support element 7 there is a virtual pivot point 37 (instantaneous pole) as the intersection of the two straight lines running through the links 31, 32 (more precisely their articulation points). Due to the length of the links 31, 32 and / or the position of the articulation points or axes of rotation 33, 34, 35, 36 on the first and second seat support elements 6, 7, the distance between the instantaneous pole 37 and the seat support 4 can vary depending on the desired movement / inclination dynamics of the registered office.
  • the links 31, 32 are designed in the illustrated example as plate-shaped coupling elements, the pivot joints being provided for coupling to the first and second seat support elements 6, 7 on the lower and upper side edges of the links 31, 32, so that the axes of rotation 33, 43 , 35, 36 run parallel to the longitudinal direction of the links 31, 32.
  • the number of links 31, 32 on each side of the central longitudinal plane 25 can also be larger. Depending on the design, it is possible, for example, that two or three links are provided on each side instead of a single link 31, 32.
  • the instantaneous pole 37 is preferably located below the seat support 4, more precisely below the seat surface of the seat. At the in Fig. 18 illustrated variant, the instantaneous pole 37 is fixed as a real fulcrum in the seat support 4. There is no translation, only a tilting movement.
  • the instantaneous pole 37 of the seat support 4 changes during a movement of the second Seat support element 7 is always located so far from the seat support 4 transversely to the longitudinal direction 8 of the chair that the translation components of the movement are greater than the rotation components.
  • the instantaneous pole 37 is also preferably so far away from the seat support 4 that the translation component of the movement of the second seat support element 7 is greater than the rotation / inclination component of the movement.
  • the second seat support element 7 does not move on an extremely curved or steep, but instead on a rather flat path curve. This benefits increased seating comfort.
  • the instantaneous pole 37 is preferably located near the ground, that is to say in the vicinity of the chair carrier provided at the lower end of the chair column (not shown).
  • the instantaneous pole 37 moves as in FIGS Fig. 2 and 3rd illustrated, with an inclination of the seat support 4 when using the handlebar arrangement 31, 32 (four-joint mechanism) also on a trajectory 38 (see Fig. 3 ) and is not fixed. This is perceived as particularly pleasant for the movement dynamics. With a pure tilting movement, as in Fig. 18 shown, the instantaneous pole 37 is fixed.
  • the articulation points of the two links 31, 32 defined by the position of the axes 33, 34, 35, 36 form (with a view in the longitudinal direction of the chair 8) in the undeflected state a symmetrical, in particular isosceles trapezoid.
  • the two links 31, 32 more precisely the connecting lines 41, 42 between the upper and lower articulation points (axis positions), the trapezoidal legs, the connecting line 43 between the upper articulation points form the upper trapezoid base side and the connecting line 44 between the lower articulation points the lower trapezoidal base side .
  • the upper base side of the trapezoid is longer than the lower base side.
  • the distance between the lower axes, that is, the axes 33, 35 of the joints connecting the links 31, 32 to the first (lower) seat support element 6, is less than the distance between the upper axes, that is, the axes 34, 36 of the joints of the Connection of the handlebars 31, 32 with the second (upper) seat support element 7. For this reason, it is an unstable system that tends to tip over.
  • spring elements (not shown) are therefore provided, which - attacking at suitable points - hold the second seat support element 7 in position in the non-inclined basic state in relation to the first seat support element 6 and, in the inclined state, support or return the second seat support element 7 to its basic position . causes.
  • spring elements are provided, which are connected on the one hand to the first seat support element 6 and on the other hand to the second seat support element 7 or to the links 31, 32 in order to hold the second seat support element 7 in its basic position not inclined to the right or left.
  • the second seat support element 7 is connected to the first seat support element 6 in that the second seat support element 7 slides on a surface 45 of the first seat support element 6 which defines the movement path of the second seat support element 7 ( Fig. 16 ) or rolling ( Fig. 17 ) rests, directly or indirectly, for example via ball bearings 46 or the like.
  • the shape of the surface 45 defines the path of movement of the second Seat support element 7 transversely to the longitudinal direction of the chair 8. Even when using such a roller or slideway, a wandering instantaneous pole 37 can be achieved by designing the surface 45 of the roller or slideway.
  • a surface 45 of the first seat support element 6 convexly curved in the direction of the second seat support element 7 interacts with a surface 47 of the second seat support element 7 concavely curved in the direction of the first seat support element 6.
  • first and second seat support elements 6, 7 are two separate components which are mechanically connected to one another, e.g. about the coupling elements described (handlebars 31, 32).
  • at least one elastic coupling element (not shown) can be arranged as a third component between the first and second seat support elements 6, 7, for example in the form of a cuboid or cylindrical buffer element, which ensures the required mobility of the two seat support elements 6, 7 relative to one another.
  • the buffer element is constructed, for example, in such a way that a rubber-elastic material is arranged between a base plate and a cover plate.
  • Such or similar buffer elements can also be provided between the mutually movable mechanical components 6, 7, etc. as stop elements for limiting movement.
  • a one-piece design of the two seat support elements 6, 7 is also possible, preferably using a suitable, flexible or elastic connecting material which allows the second seat support element 7 to move and / or incline relative to the first seat support element 6.
  • a suitable, flexible or elastic connecting material which allows the second seat support element 7 to move and / or incline relative to the first seat support element 6.
  • Such a variant is can be produced particularly advantageously, for example using a multi-component injection molding process with various suitable plastics.
  • the mechanical components are preferably designed to be resilient, that is to say in particular designed to return the moved or deflected element to the basic position.
  • the otherwise necessary spring elements for erecting the second seat support element 7 or for maintaining the equilibrium state of the second seat support element 7 in the unoccupied state can then be omitted.
  • the movement of the second backrest support element 11 comprises only one rotation.
  • the central axis of rotation 12 (tilt axis) required for rotating the backrest support element 11 preferably runs below the seat surface of the seat.
  • the axis of rotation 12 of the backrest support 5 runs in the longitudinal direction 8 of the chair and parallel to the axes of rotation 33, 34, 35, 36 of the handlebar arrangement 31, 32, and thus perpendicular to the axes of rotation 15, 16, 22, 23 of base support 2, seat support 4 and backrest support 5.
  • the axis of rotation 12 is arranged in the vertical direction between the first axes of rotation 33, 35 of the links 31, 32 and the second axes of rotation 34, 36 of the links 31, 32.
  • the first and the second backrest support elements 9, 11 are preferably designed as two separate components which are mechanically connected to one another, for example via a butt joint with a rotational degree of freedom.
  • a one-piece design of the two backrest support elements 9, 11 is also possible, preferably using a suitable, flexible or elastic one Connection material that allows the second backrest support element 11 to be rotated about the axis of rotation 12.
  • the second backrest support element 11 is preferably designed as a central support arm, which extends centrally backwards away from the chair mechanism 1.
  • the second backrest support element 11 is designed as part of a frame 50 for the backrest, for example as a central connecting element between the backrest support 5 and a lower cross strut of the frame 50.
  • the second backrest support element 11 is coupled to the second seat support element 7 such that a movement of the second seat support element 7 relative to the first seat support element 6 a movement of the second backrest support element 11 relative to the first backrest support element 9, more precisely an inclination of the second backrest support element 11 to the right or left, effected (or vice versa).
  • the seat tilts to the right or left
  • the backrest A fixed backrest would be less comfortable with a reclining seat.
  • the lateral inclination of the seat or the backrest (without pivoting the seat support 4 backwards through the backrest support 5) is in the Fig. 3 , 6 , 10th , 14 shown.
  • the tilting movement of the backrest support 5, more precisely the tilting movement of the second backrest support element 11 and thus the backrest, is induced solely and exclusively by the articulation of the second backrest support element 11 to the second seat support element 7.
  • the second backrest support element 11 is connected to the second seat support element 7 in that a connecting arm 48 of the second backrest support element 11 engages with its free end 49 in a receiving opening 51 of the second seat support element 7 or lies in such a receiving opening 51.
  • the introduction of the force or the transmission of the torque from the second seat support element 7 to the second backrest support element 11 takes place exclusively via the connecting arm 48.
  • the connecting arm 48 is preferably not rotationally fixed, i.e. the free end 49 lies rotatably in the receiving opening 51.
  • the free end 49 is both axial, i.e. Can be moved in the longitudinal direction 8 of the chair and vertically in the receiving opening 51, so that the connecting arm 48 can move with limited degrees of freedom in accordance with the combined translation / rotation movement of the second seat support element 7 on the defined trajectory 28 relative to the first seat support element 6. that it causes a (pure) rotational movement of the second backrest support element 11 about its axis of rotation 12 relative to the first backrest support element 9.
  • This coupling is implemented, for example, by a sliding block 52 or the like attached to the free end 49 of the connecting arm 48, which is in the form of a groove in the setting or receiving opening 51 of the second seat support element 7 (lying there against the vertical side surfaces of the groove).
  • the movement of the link and thus the movement of the second seat support elements 7 is transmitted to the positively guided link block 52, the rotational degree of freedom being achieved by a suitable rotary connection of the link block 52 to the connecting arm 48.
  • the backrest support 5 is divided in such a way that the first backrest support element 9, like the front part of the backrest support 5 seen in the longitudinal direction 8 of the chair, realizes the connection of the backrest to the base support 2 and the first seat support element 6, while the second backrest support element 11, which extends in the longitudinal direction of the chair 8 seen to the rear connects to the first backrest support element 9, forms the transition to the backrest, but at the same time is coupled to the second seat support element 7.
  • connection or coupling of the second seat support element 7 to the second backrest support element 11 takes place via a number of links (not shown) articulatedly connected to the second seat support element 7 and the second backrest support element 11, which are preferably designed as the links between the two seat support elements 6, 7 in the manner of a four-bar mechanism, or via other coupling elements.
  • the connection or coupling of the second seat support element 7 to the second backrest support element 11 takes place via a one-piece design of the seat support element 7 and the backrest support element 11 using a suitable, flexible or elastic material.
  • a variant has proven to be particularly advantageous in which the inclination of the backrest or of the second backrest support element 11 is different from the inclination of the seat or of the second seat support element 7.
  • the invention it is therefore not only possible to exclusively implement a tilting movement of the second seat support element 7 to the right or left without this leading to a subsequent movement of the backrest support 5; for this purpose, only the coupling of the backrest support 5 to the second seat support element 7 has to be omitted.
  • the tilting movements of the elements involved can also differ from one another.
  • the inclination of the second backrest support element 11 and thus the backrest corresponds to the inclination of the second seat support element 7 and thus the seat.
  • the backrest preferably moves in a different ratio to the inclined seat, ie the two angles of inclination are not the same.
  • An uneven degree of inclination has turned out to be particularly user-friendly, in particular if an inclination of the second seat support element 7 by a certain inclination angle is followed by an inclination of the second backrest support element 11 by a larger inclination angle, as in FIGS Fig. 6 , 10th and 14 shown.
  • the position of the axis of rotation 12 of the backrest support 5 is preferably below the connection point of the free end 49 of the connection arm 48 with the seat support 4, that is to say below the point at which the sliding block 52 lies in the receiving opening 51. It is thereby achieved that the backrest tilts in the same direction as the seat. A counter-giving away of the backrest (pivoting in the opposite direction) can accordingly by a reverse order of these two points can be achieved.
  • the desired inclination ratio between seat and backrest can thus be set , in particular by the structural arrangement of the position of the axes 33, 34, 35, 36, by the defined setting of the distances between the axes 33, 34, 35, 36 to one another and / or by the arrangement of the real and virtual pivot points 37 of the components involved Chair mechanics 1.
  • a variant of the invention is particularly advantageous in which the backrest support 5, more precisely the first backrest support element 9, is coupled to the seat support 4, more precisely to the first seat support element 6, in such a way that pivoting of the backrest support 5 in the longitudinal direction 8 of the chair causes movement of the seat support 4 in the longitudinal direction 8 of the chair around a pivot axis running transversely to the longitudinal direction 8 of the chair relative to the base support 2 (“synchronous mechanism”).
  • synchronous mechanism instead of such a classic synchronous mechanism, the chair mechanism 1 which is provided with the invention can also be used to implement other mechanical types, such as asynchronous mechanisms, rocker mechanisms or mixed types.
  • the (tilting) movement of the second seat support element 7 relative to the first seat support element 6 is independent of any other movement of the seat support 4 in the longitudinal direction 8 of the chair, in particular independent of the (pivoting) movement of the seat support 4 caused by the backrest support 5 this constructive and functional independence of the movements by separating the seat support 4 into the two seat support elements 6, 7. Both movements are possible independently of one another, ie not coupled to one another, and also overlapping one another.
  • the entire seat support 4 is taken along when the backrest support 5 is pivoted backwards and a tilting movement of the second seat support element 7 to the right and left can be in the non-pivoted state of the mechanism 1 or in addition swivel the backrest.
  • the invention increases the number of degrees of freedom by providing additional degrees of freedom for the seat support 4 and optionally also for the backrest support 5. Compared to conventional solutions, there is an improved movement behavior of the chair on movements of the user.

Landscapes

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

Description

Die Erfindung betrifft eine Mechanik für einen Stuhl, insbesondere für einen Bürostuhl. Darüber hinaus betrifft die Erfindung einen Stuhl mit einer solchen Stuhlmechanik.The invention relates to a mechanism for a chair, in particular for an office chair. In addition, the invention relates to a chair with such a chair mechanism.

Als Mechaniken für Bürostühle sind u. a. Synchronmechaniken, Asynchronmechaniken und Wippmechaniken bekannt.As mechanisms for office chairs are u. a. Synchronous mechanisms, asynchronous mechanisms and rocking mechanisms are known.

Unter der Bezeichnung Synchronmechanik werden dabei Baugruppen im Sitzunterbau eines Bürostuhles verstanden, die für eine miteinander gekoppelte, eine bestimmte Relativbewegung von Sitz- und Rückenlehne zueinander mit sich bringende Kinematik sorgen. Auf dem Sitzträger ist der in aller Regel mit einer gepolsterten Sitzfläche versehene Sitz des Bürostuhles montiert. Der Rückenlehnenträger, der sich in gängiger Weise von der eigentlichen Synchronmechanik nach hinten erstreckt, trägt an einem nach oben verlaufenden Ausleger die Rückenlehne des Bürostuhles. Sitzträger und Rückenlehnenträger sind üblicherweise derart gelenkig gekoppelt, daß eine Schwenkbewegung der Rückenlehne nach hinten - wie sie beispielsweise durch ein Anlehnen des Stuhlbenutzers an die Rückenlehne hervorgerufen werden kann - eine Absenkbewegung der Hinterkante des Sitzes nach unten induziert. Dadurch wird der sogenannte "Hemdauszieheffekt" verhindert und der Sitzkomfort erhöht.The term synchronous mechanism is understood to mean assemblies in the seat substructure of an office chair which ensure kinematics which are coupled to one another and bring about a certain relative movement of the seat and backrest with respect to one another. The seat of the office chair, which is usually provided with a padded seat, is mounted on the seat support. The backrest support, which extends backwards from the actual synchronous mechanism in a conventional manner, carries the backrest of the office chair on a cantilever arm. Seat support and backrest support are usually articulated so that a pivoting movement of the backrest to the rear - as can be caused, for example, by leaning the chair user against the backrest - induces a lowering movement of the rear edge of the seat downward. This prevents the so-called "shirt pull-out effect" and increases seating comfort.

Unter der Bezeichnung Asynchronmechanik werden solche Baugruppen verstanden, bei denen eine Verschwenkung der Rückenlehne keine Bewegung des Sitzträgers hervorruft. Mit anderen Worten bewegt sich bei einem Verschwenken nach hinten ausschließlich die Rückenlehne. Der Sitzkomfort ist im Vergleich zu Synchronmechaniken vermindert. Insbesondere kann bei Asynchronmechaniken aufgrund eines "Auseinanderlaufens" der Bewegungen von Rückenlehne und Sitz der sogenannte "Hemdauszieheffekt" auftreten. Allerdings sind solche Baugruppen wegen ihres vergleichsweise einfachen Aufbaus deutlich preiswerter in der Herstellung als die zuvor beschriebenen Synchronmechaniken.The term asynchronous mechanics means assemblies in which pivoting the backrest does not cause the seat support to move. In other words, when swiveling backwards, only that moves Backrest. The seating comfort is reduced compared to synchronous mechanisms. In particular, the so-called "shirt pull-out effect" can occur in asynchronous mechanisms due to the "divergence" of the movements of the backrest and seat. However, because of their comparatively simple construction, such assemblies are significantly cheaper to manufacture than the synchronous mechanisms described above.

Bei Wippmechaniken handelt es sich um vergleichsweise einfach aufgebaute Baugruppen im Sitzunterbau von Stühlen, bei denen der Rückenlehnenträger mehr oder weniger starr mit dem Sitzträger, dem Sitz oder dem Rahmen des Stuhles verbunden ist. Die so entstehende Sitzträger-Rückenlehnenträger-Kombination ist mittels der Wippmechanik um eine quer zu der Stuhllängsrichtung verlaufende Schwenkachse nach hinten verschwenkbar, wenn sich der Benutzer des Stuhls an die Rückenlehne anlehnt. Derartige Wippmechaniken werden oftmals anstelle von Synchronmechaniken in preiswerten Besucher- oder Konferenzstühlen verwendet, um dort eine einfache Wippfunktion zu realisieren. Wegen ihres vergleichsweise einfachen Aufbaus sind Wippmechaniken meist deutlich preiswerter in der Herstellung als die zuvor beschriebenen Mechaniken.Rocker mechanisms are comparatively simple assemblies in the seat substructure of chairs, in which the backrest support is more or less rigidly connected to the seat support, the seat or the frame of the chair. The resulting seat support-backrest support combination can be pivoted backward about a pivot axis running transversely to the longitudinal direction of the chair by means of the rocker mechanism when the user of the chair is leaning against the backrest. Such rocker mechanisms are often used instead of synchronous mechanisms in inexpensive visitor or conference chairs in order to implement a simple rocker function there. Because of their comparatively simple structure, rocker mechanisms are usually significantly cheaper to manufacture than the mechanisms described above.

All diesen Mechaniken ist es gemeinsam, daß eine Schwenkbewegung einzelner oder mehrerer Mechanikkomponenten in Stuhllängsrichtung, d.h. nach vorn oder hinten, möglich ist.It is common to all these mechanisms that a pivoting movement of individual or several mechanical components in the longitudinal direction of the chair, i.e. forward or backward, is possible.

In DE 20 2012 012606 U1 , DE 10 2012 107778 A1 , DE 20 2014 101 592 U1 und DE 10 2014 1030 780 B3 sind andere Stuhlmechaniken beschrieben, bei denen sich Mechanikkomponenten auch quer zur Stuhllängsrichtung, d.h. nach rechts oder links, bewegen lassen.In DE 20 2012 012606 U1 , DE 10 2012 107778 A1 , DE 20 2014 101 592 U1 and DE 10 2014 1030 780 B3 other chair mechanisms are described in which mechanical components can also be moved transversely to the longitudinal direction of the chair, ie to the right or left.

Eine Aufgabe der vorliegenden Erfindung ist es, den Sitzkomfort von Stuhlmechaniken zu verbessern.An object of the present invention is to improve the seating comfort of chair mechanisms.

Diese Aufgabe wird durch eine Mechanik nach Anspruch 1 bzw. durch einen Stuhl nach Anspruch 10 gelöst. Vorteilhafte Ausführungen der Erfindung sind in den Unteransprüchen angegeben.This object is achieved by a mechanism according to claim 1 or by a chair according to claim 10. Advantageous embodiments of the invention are specified in the subclaims.

Die im Folgenden im Zusammenhang mit der Stuhlmechanik erläuterten Vorteile und Ausgestaltungen gelten sinngemäß auch für den erfindungsgemäßen Stuhl und umgekehrt.The advantages and configurations explained below in connection with the chair mechanism also apply analogously to the chair according to the invention and vice versa.

Die erfindungsgemäße Stuhlmechanik umfaßt einen auf einer Stuhlsäule plazierbaren Basisträger, einen auf dem Basisträger angeordneten Sitzträger sowie einen mit dem Sitzträger verbundenen Rückenlehnenträger,

  • wobei der Sitzträger ein erstes Sitzträgerelement und ein zweites Sitzträgerelement umfaßt, wobei das zweite Sitzträgerelement relativ zu dem ersten Sitzträgerelement quer zur Stuhllängsrichtung bewegbar ist,
    oder
  • wobei der Sitzträger ein erstes Sitzträgerelement und ein zweites Sitzträgerelement umfaßt, wobei das zweite Sitzträgerelement relativ zu dem ersten Sitzträgerelement quer zur Stuhllängsrichtung bewegbar ist, und der Rückenlehnenträger ein erstes Rückenlehnenträgerelement und ein zweites Rückenlehnenträgerelement umfaßt, wobei das zweite Rückenlehnenträgerelement relativ zu dem ersten Rückenlehnenträgerelement um eine in Stuhllängsrichtung liegende Drehachse drehbar ist,
wobei die Bewegung des zweiten Sitzträgerelements eine Translation und eine Rotation umfaßt, und ist dadurch gekennzeichnet, daß das zweite Sitzträgerelement mit dem ersten Sitzträgerelement über wenigstens eine Lenkeranordnung verbunden ist, wobei die Lenkeranordnung zwei Lenker umfaßt, wobei jeder Lenker sowohl um eine erste Drehachse drehbar an dem ersten Sitzträgerelement als auch um eine zweite Drehachse drehbar an dem zweiten Sitzträgerelement angelenkt ist, wobei alle Drehachsen parallel zueinander liegen und in Stuhllängsrichtung verlaufen.The chair mechanism according to the invention comprises a base support which can be placed on a chair column, a seat support arranged on the base support and a backrest support connected to the seat support,
  • wherein the seat support comprises a first seat support element and a second seat support element, the second seat support element being movable relative to the first seat support element transversely to the longitudinal direction of the chair,
    or
  • wherein the seat support comprises a first seat support element and a second seat support element, the second seat support element being movable transversely to the longitudinal direction of the chair relative to the first seat support element, and the backrest support comprising a first backrest support element and a second backrest support element, the second backrest support element relative to the first backrest support element by one the axis of rotation lying in the longitudinal direction of the chair is rotatable,
wherein the movement of the second seat support member comprises translation and rotation, and is characterized in that the second seat support member mates with the first Seat support element is connected via at least one link arrangement, the link arrangement comprising two links, each link being articulated both rotatable about a first axis of rotation on the first seat support element and rotatable about a second axis of rotation on the second seat support element, all axes of rotation lying parallel to one another and in Longitudinal direction of the chair.

Mit der Erfindung wird eine Stuhlmechanik mit einem verbesserten Sitzkomfort geschaffen.The invention creates a chair mechanism with improved seating comfort.

Eine Kernidee der Erfindung ist es, alternativ oder zusätzlich zu der oben beschriebenen Schwenkbewegung nach vorn und hinten eine Neigebewegung einzelner oder mehrerer Mechanikkomponenten nach rechts und links zu ermöglichen.A core idea of the invention is, as an alternative or in addition to the above-described swiveling movement to the front and to the rear, to enable individual or more mechanical components to be tilted to the right and left.

In Ausführungsformen der Erfindung ist hierfür ein zweigeteilter Sitzträger vorgesehen. In anderen Ausführungsformen der Erfindung ist zusätzlich ein zweigeteilter Rückenlehnenträger vorgesehen und die gewünschte Querbewegung des Sitzträgers wird über geeignete Mittel auf den Rückenlehnenträger übertragen oder umgekehrt.In embodiments of the invention, a two-part seat support is provided for this. In other embodiments of the invention, a two-part backrest support is additionally provided and the desired transverse movement of the seat support is transmitted to the backrest support by suitable means or vice versa.

Vorteilhafterweise sind die Bewegungen der einzelnen Mechanikkomponenten voneinander unabhängig ausführbar. Das bedeutet beispielsweise, daß eine Neigebewegung einer Sitzträgerkomponente in Stuhllängsrichtung gesehen nach rechts oder links unabhängig von einer Schwenkbewegung des Sitzträgers nach vorn oder hinten möglich ist. Dies wird dadurch erreicht, daß gegenüber einer herkömmlichen Stuhlmechanik die Anzahl der zur Verfügung stehenden Freiheitsgrade erhöht wird. Es ergibt sich gegenüber herkömmlichen Lösungen ein verbessertes Bewegungsverhalten des Stuhls auf Bewegungen des Benutzers. Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen näher erläutert. Hierbei zeigen:

Fig. 1-15
Darstellungen eines erfindungsgemäßen Ausführungsbeispiels,
Fig. 16
eine Darstellung eines nicht erfindungsgemäßen Beispiels,
Fig. 17
eine Darstellung eines nicht erfindungsgemäßen Beispiels,
Fig. 18
eine Darstellung eines nicht erfindungsgemäßen Beispiels.
The movements of the individual mechanical components can advantageously be carried out independently of one another. This means, for example, that a tilting movement of a seat support component in the longitudinal direction of the chair, to the right or left, is possible independently of a pivoting movement of the seat support to the front or to the rear. This is achieved by increasing the number of degrees of freedom available compared to conventional chair mechanics. Compared to conventional solutions, there is an improved movement behavior of the chair on movements of the user. Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. Here show:
Fig. 1-15
Representations of an embodiment according to the invention,
Fig. 16
a representation of an example not according to the invention,
Fig. 17
a representation of an example not according to the invention,
Fig. 18
a representation of an example not according to the invention.

Sämtliche Figuren zeigen die Erfindung nicht maßstabsgerecht, dabei lediglich schematisch und nur mit ihren wesentlichen Bestandteilen. Gleiche Bezugszeichen entsprechen dabei Elementen gleicher oder vergleichbarer Funktion.All of the figures show the invention not to scale, but only schematically and only with its essentials Components. The same reference numerals correspond to elements of the same or comparable function.

Fig. 1 zeigt eine Mechanik 1 für einen Bürostuhl in Seitenansicht im unverschwenkten und nicht geneigten Zustand. Fig. 2 zeigt die Mechanik 1 aus Fig. 1 in einem Querschnitt entlang der Linie II-II. Fig. 3 zeigt die Mechanik 1 aus Fig. 2 mit einem seitlich geneigten Sitzträgerelement. Fig. 1 shows a mechanism 1 for an office chair in side view in the non-pivoted and not inclined state. Fig. 2 shows mechanics 1 Fig. 1 in a cross section along the line II-II. Fig. 3 shows mechanics 1 Fig. 2 with a laterally inclined seat support element.

Die Mechanik 1 weist einen Basisträger 2 auf, der mittels einer Konusaufnahme 3 auf das obere Ende einer Stuhlsäule (nicht abgebildet) gesetzt ist. Die Mechanik 1 umfaßt einen Sitzträger 4, der auf dem Basisträger 2 angeordnet und relativ zu dem feststehenden Basisträger 2 in Stuhllängsrichtung 8 nach vorn und hinten bewegbar ist. Auf dem Sitzträger 4 ist der in aller Regel mit einer gepolsterten Sitzfläche versehen Sitz (nicht abgebildet) des Bürostuhls montiert.The mechanism 1 has a base support 2, which is placed on the upper end of a chair column (not shown) by means of a cone receptacle 3. The mechanism 1 comprises a seat support 4 which is arranged on the base support 2 and can be moved forwards and backwards in the longitudinal direction 8 of the chair relative to the fixed base support 2. The seat (not shown) of the office chair, which is usually provided with a padded seat, is mounted on the seat support 4.

Der Sitzträger 4 umfaßt ein erstes Sitzträgerelement 6 und ein zweites Sitzträgerelement 7, wobei das zweite Sitzträgerelement 7 relativ zu dem ersten Sitzträgerelement 6 quer zur Stuhllängsrichtung 8, d.h. nach rechts und links, bewegbar ist. Bei dem ersten Sitzträgerelement 6 handelt es sich um die getrennt von dem eigentlichen Sitz angebrachte Sitzträgerbasis, ein Element des Sitzträgers 4, das mit dem Basisträger 2 zusammenwirkt. Bei dem zweiten Sitzträgerelement 7 handelt es sich um das Sitzmontageelement, welches entweder den Sitz mit Sitzfläche umfaßt oder aber - beispielsweise ausgeführt als Montageplatte - die für eine Sitzmontage notwendigen Voraussetzungen bietet.The seat support 4 comprises a first seat support element 6 and a second seat support element 7, the second seat support element 7 relative to the first seat support element 6 transversely to the longitudinal direction 8 of the chair, i.e. to the right and left, is movable. The first seat support element 6 is the seat support base which is attached separately from the actual seat, an element of the seat support 4 which interacts with the base support 2. The second seat support element 7 is the seat mounting element, which either encompasses the seat with a seat surface or, for example, embodied as a mounting plate, offers the prerequisites necessary for seat mounting.

Die Mechanik 1 umfaßt außerdem einen Rückenlehnenträger 5, der mit dem Sitzträger 4 und dem Basisträger 2 verbunden ist. Mit dem Rückenlehnenträger 5 verbunden ist die in aller Regel mit einer gepolsterten Anlehnfläche versehene Rückenlehne (nicht abgebildet) des Bürostuhls.The mechanism 1 also includes a backrest support 5, the is connected to the seat support 4 and the base support 2. Connected to the backrest support 5 is the backrest (not shown) of the office chair, which is usually provided with a padded leaning surface.

Der Rückenlehnenträger 5 umfaßt ein erstes Rückenlehnenträgerelement 9 und ein zweites Rückenlehnenträgerelement 11, wobei das zweite Rückenlehnenträgerelement 11 relativ zu dem ersten Rückenlehnenträgerelement 8 um eine in Stuhllängsrichtung 8 liegende Drehachse 12 (Neigeachse) drehbar (neigbar) ist. Bei dem ersten Rückenlehnenträgerelement 9 handelt es sich um die Rückenlehnenträgerbasis, ein Element des Rückenlehnenträgers 5, das mit dem Basisträger zusammenwirkt. Bei dem zweiten Rückenlehnenträgerelement 11 handelt es sich um das Rückenlehnenmontageelement, welches entweder die Rückenlehne mit Anlehnfläche umfaßt oder aber - beispielsweise ausgeführt als Montageadapter - die für eine Rückenlehnenmontage notwendigen Voraussetzungen bietet.The backrest support 5 comprises a first backrest support element 9 and a second backrest support element 11, the second backrest support element 11 being rotatable (tiltable) relative to the first backrest support element 8 about an axis of rotation 12 (tilt axis) lying in the longitudinal direction 8 of the chair. The first backrest support element 9 is the backrest support base, an element of the backrest support 5 which interacts with the base support. The second backrest support element 11 is the backrest mounting element, which either encompasses the backrest with the leaning surface or - for example as a mounting adapter - offers the conditions necessary for backrest mounting.

Der Rückenlehnenträger 5 ist sowohl mit dem in Stuhllängsrichtung 8 gesehen hinteren Ende 13 des ersten Sitzträgerelements 6 als auch mit dem hinteren Ende 14 des Basisträgers 2 um quer zur Stuhllängsrichtung 8 verlaufende hintere Drehachsen 15, 16 schwenkbar verbunden, wobei der Verbindungsbereich des Rückenlehnenträgers 5 zwischen diesen beiden Drehachsen 15, 16 als hinteres Koppelelement 17 zwischen Basisträger 2 und Sitzträger 4 dient. Ein vorderes Koppelelement 18 ist sowohl mit dem in Stuhllängsrichtung 8 gesehen vorderen Ende 21 des Basisträgers 2 als auch mit dem vorderen Ende 19 des ersten Sitzträgerelements 6 um quer zur Sitzlängsrichtung 8 verlaufende vordere Drehachsen 22, 23 schwenkbar verbunden.The backrest support 5 is pivotally connected both to the rear end 13 of the first seat support element 6, as seen in the longitudinal direction 8 of the chair, and to the rear end 14 of the base support 2 about rear axes of rotation 15, 16 extending transversely to the longitudinal direction 8 of the chair, the connection area of the backrest support 5 between them two axes of rotation 15, 16 serves as a rear coupling element 17 between base support 2 and seat support 4. A front coupling element 18 is pivotally connected both to the front end 21 of the base support 2, as seen in the longitudinal direction 8 of the chair, and to the front end 19 of the first seat support element 6 about front axes of rotation 22, 23 extending transversely to the longitudinal direction 8 of the seat.

Aufgrund der beschriebenen Verbindung des Rückenlehnenträgers 5 mit dem Sitzträger 4 hat ein Verschwenken des Rückenlehnenträgers 5 in Schwenkrichtung 24 nach hinten, d.h. von einer aufrechten Ausgangsposition (Fig. 1, 2, 4, 8, 12) in eine hintere Schwenkposition (Fig. 5, 9, 13) der Mechanik 1, eine Bewegung des gesamten Sitzträgers 4 relativ zu dem feststehenden Basisträger 2 zur Folge, wobei der Sitzträger 4 in dem hier beschriebenen Beispiel hinten abgesenkt und vorn angehoben wird.Due to the described connection of the backrest support 5 to the seat support 4, the backrest support 5 has to be pivoted backwards in the pivoting direction 24, ie from an upright starting position ( 1, 2 , 4th , 8th , 12th ) in a rear swivel position ( Fig. 5 , 9 , 13 ) of the mechanism 1, a movement of the entire seat support 4 relative to the fixed base support 2, the seat support 4 being lowered at the rear and raised at the front in the example described here.

Die Art und Weise der Ankopplung des verschwenkbaren Rückenlehnenträgers 5 an das erste Sitzträgerelement 6 und/oder den Basisträger 2 spielt für die vorliegende Erfindung keine Rolle. Es kann sich dabei um eine direkte oder eine indirekte Ankopplung handeln. Gleiches gilt für die Anlenkung des Rückenlehnenträgers 5 an den Basisträger 2 und den Sitzträger 4 und damit die konkrete Ausgestaltung der Synchronbewegung zwischen Rückenlehne und Sitz.The manner in which the pivotable backrest support 5 is coupled to the first seat support element 6 and / or the base support 2 is irrelevant to the present invention. It can be a direct or an indirect connection. The same applies to the articulation of the backrest support 5 to the base support 2 and the seat support 4 and thus the specific configuration of the synchronous movement between the backrest and the seat.

Die Mechanik 1 ist bezüglich der Mittellängsebene 25 (siehe Fig. 2), was die eigentliche Kinematik betrifft, spiegelsymmetrisch aufgebaut. Insoweit ist bei dieser Beschreibung immer von beiderseits paarweise vorhandenen Konstruktionselementen der Mechanik 1 auszugehen. In den Fig. 2 und 3 sind Teile der Mechanik 1, insbesondere Teile des Basisträgers 2 aus Gründen der Übersichtlichkeit nicht dargestellt.The mechanism 1 is with respect to the central longitudinal plane 25 (see Fig. 2 ), as far as the actual kinematics are concerned, mirror-symmetrical. In this respect, it is always to be assumed in this description that construction elements of mechanics 1 are present in pairs on both sides. In the Fig. 2 and 3rd parts of the mechanism 1, in particular parts of the base support 2, are not shown for reasons of clarity.

Die Begriffe "Schwenkbewegung, verschwenken, Schwenkachse" usw. beziehen sich auf die Bewegung des Rückenlehnenträgers 5 und des Sitzträgers 4 um quer zur Stuhllängsrichtung 8 verlaufende Drehachsen 15, 16, 22, 23 bei einem Verschwenken des Rückenlehnenträgers 5. Die Begriffe "Neigebewegung, neigen, Neigeachse" usw. beziehen sich auf die Bewegung des zweiten Sitzträgerelements 7 bzw. des zweiten Rückenlehnenträgerelements 11 um in Stuhllängsrichtung 8 verlaufende Drehachsen 12, 33, 34, 35, 36 wobei die Neigebewegung einen rotatorischen und einen translatorischen Anteil umfassen kann. Der Begriff "Kippen" bezieht sich auf den rotatorischen Anteil der Neigebewegung. Die Stuhllängsrichtung 8 erstreckt sich von der Stuhlvorderseite 26 in Richtung der Stuhlhinterseite 27.The terms "pivoting movement, pivoting, pivoting axis" etc. relate to the movement of the backrest support 5 and the seat support 4 about axes of rotation 15, 16, 22, 23 extending transversely to the longitudinal direction of the chair 8 when the backrest support 5 is pivoted. The terms "tilting movement, incline""Tiltaxis" etc. refer to the movement of the second seat support element 7 or the second Backrest support element 11 about axes of rotation 12, 33, 34, 35, 36 extending in the longitudinal direction 8 of the chair, wherein the tilting movement can comprise a rotary and a translatory component. The term "tilt" refers to the rotary part of the tilt movement. The longitudinal direction 8 of the chair extends from the front of the chair 26 in the direction of the rear 27 of the chair.

Es ist von Vorteil, wenn die beiden Sitzträgerelemente 6, 7 übereinander angeordnet sind, insbesondere so, daß das zweite Sitzträgerelement 7 auf dem ersten Sitzträgerelement 6 angeordnet ist bzw. oberhalb des ersten Sitzträgerelements 6 angeordnet ist bzw. von dem ersten Sitzträgerelement 6 getragen wird. In diesen Fällen kann das erfindungsgemäße Querbewegungssystem ohne größere konstruktive Anpassungen mit einer bereits bestehenden Stuhlmechanik verwendet werden. Beispielsweise kann ein zweites Sitzträgerelement 7 als zusätzliches Bauteil auf eine bestehende Mechanikkomponente aufgesetzt werden, wobei der Sitzträger der herkömmlichen Mechanik die erste Sitzträgerkomponente 6 der erfindungsgemäßen Mechanik 1 bildet.It is advantageous if the two seat support elements 6, 7 are arranged one above the other, in particular such that the second seat support element 7 is arranged on the first seat support element 6 or is arranged above the first seat support element 6 or is carried by the first seat support element 6. In these cases, the transverse movement system according to the invention can be used with an existing chair mechanism without major structural adjustments. For example, a second seat support element 7 can be placed as an additional component on an existing mechanical component, the seat support of the conventional mechanism forming the first seat support component 6 of the mechanical system 1 according to the invention.

Das erste Sitzträgerelement 6 kann als Mechanikkomponente ausgeführt sein, die in bewährter Weise über quer zur Stuhllängsrichtung 8 verlaufende Achsen 22, 15 an den Basisträger 2 bzw. den Rückenlehnenträger 5 angelenkt ist. Das erste Sitzträgerelement 6 kann aber auch als in Stuhllängsrichtung 8 verschiebbarer Sitzschlitten ausgeführt sein; in diesem Fall kann es beispielsweise geeignet zur Sitztiefenverstellung sein.The first seat support element 6 can be designed as a mechanical component which is articulated to the base support 2 or the backrest support 5 via axes 22, 15 extending transversely to the longitudinal direction 8 of the chair. However, the first seat support element 6 can also be designed as a seat slide that can be moved in the longitudinal direction 8 of the chair; in this case it can be suitable for seat depth adjustment, for example.

Es hat sich als besonders vorteilhaft herausgestellt, daß das zweite Sitzträgerelement 7 relativ zu dem ersten Sitzträgerelement 6 auf einer Bahnkurve 28 bewegbar ist, die in einer Ebene 29 quer zur Stuhllängsrichtung 8 liegt, wobei es sich bei dieser Ebene 29 vorzugsweise um eine vertikale Ebene (siehe Fig. 1) handelt. Die Ebene 29 kann aber auch schräg zur Vertikalen liegen.It has turned out to be particularly advantageous that the second seat support element 7 can be moved relative to the first seat support element 6 on a path curve 28 which is shown in FIG a plane 29 lies transversely to the longitudinal direction 8 of the chair, this plane 29 preferably being a vertical plane (see Fig. 1 ) acts. The plane 29 can also be at an angle to the vertical.

Besonders vorteilhaft ist es darüber hinaus, wenn sich bei einer Bewegung des zweiten Sitzträgerelements 7 relativ zu dem ersten Sitzträgerelement 6 der von dem zweiten Sitzträgerelement 7 getragene Sitz in Stuhllängsrichtung 8 gesehen seitlich neigt. Die konkrete Ausführung des Sitzes ist dabei für die Erfindung unerheblich.It is also particularly advantageous if, when the second seat support element 7 moves relative to the first seat support element 6, the seat carried by the second seat support element 7 inclines sideways in the longitudinal direction 8 of the chair. The specific design of the seat is irrelevant to the invention.

Die Neigebewegung des zweiten Sitzträgerelements 7 umfaßt dabei vorzugsweise eine Translation und eine Rotation. Mit anderen Worten wird eine Seitwärtsbewegung, also eine Bewegung des zweiten Sitzträgerelements 7 quer zur Stuhllängsrichtung 8, mit einer Kipp- bzw. Neigebewegung des zweiten Sitzträgerelements 7 relativ zu dem ersten Sitzträgerelement 6 kombiniert. Beispielhaft, aber nicht erfindungsgemäß, erfolgt eine ausschließliche Rotation des zweiten Sitzträgerelements 7, d.h. eine reine Kippbewegung, siehe Fig. 18.The tilting movement of the second seat support element 7 preferably comprises a translation and a rotation. In other words, a sideways movement, that is to say a movement of the second seat support element 7 transversely to the longitudinal direction 8 of the chair, is combined with a tilting or tilting movement of the second seat support element 7 relative to the first seat support element 6. As an example, but not according to the invention, there is an exclusive rotation of the second seat support element 7, ie a pure tilting movement, see Fig. 18 .

In der erfindungsgemäßen Ausführungsform (Fig. 1 bis 15) ist das zweite Sitzträgerelement 7 mit dem ersten Sitzträgerelement 6 über wenigstens eine Lenkeranordnung verbunden. Dabei umfaßt die Lenkeranordnung zwei Lenker 31, 32 (Koppelelemente), von denen jeweils einer auf jeder Seite der vertikalen Mittellängsebene 25 des Stuhls vorgesehen ist. Dabei ist jeder Lenker 31, 32 sowohl um eine erste Drehachse 33, 35 drehbar an dem ersten Sitzträgerelement 6 als auch um eine zweite Drehachse 34, 36 drehbar an dem zweiten Sitzträgerelement 7 angelenkt, wobei alle Drehachsen 33, 34, 35, 36 parallel zueinander liegen und in Stuhllängsrichtung 8 verlaufen. Zugleich verlaufen alle Drehachsen 33, 34, 35, 36 unterhalb der Sitzfläche des Sitzes.In the embodiment according to the invention ( 1 to 15 ) the second seat support element 7 is connected to the first seat support element 6 via at least one link arrangement. The handlebar arrangement comprises two links 31, 32 (coupling elements), one of which is provided on each side of the vertical central longitudinal plane 25 of the chair. Each link 31, 32 is articulated both on a first axis of rotation 33, 35 on the first seat support element 6 and on a second axis of rotation 34, 36 on the second seat support element 7, with all axes of rotation 33, 34, 35, 36 parallel to one another lie and in Chair longitudinal direction 8 run. At the same time, all axes of rotation 33, 34, 35, 36 run below the seat surface of the seat.

Derart ausgeführt erfolgt die Verbindung der beiden Sitzträgerelemente 6, 7 miteinander unter Ausbildung einer Viergelenkmechanik, wobei sich für das zweite Sitzträgerelement 7 ein virtueller Drehpunkt 37 (Momentanpol) als Schnittpunkt der beiden durch die Lenker 31, 32 (genauer deren Anlenkpunkte) verlaufenden Geraden ergibt. Durch die Länge der Lenker 31, 32 und/oder die Lage der Anlenkpunkte bzw. Drehachsen 33, 34, 35, 36 an dem ersten und zweiten Sitzträgerelement 6, 7 kann der Abstand des Momentanpols 37 zum Sitzträger 4 je nach gewünschter Bewegungs-/Neigungsdynamik des Sitzes definiert werden.In this way, the connection of the two seat support elements 6, 7 to one another takes place with the formation of a four-bar mechanism, whereby for the second seat support element 7 there is a virtual pivot point 37 (instantaneous pole) as the intersection of the two straight lines running through the links 31, 32 (more precisely their articulation points). Due to the length of the links 31, 32 and / or the position of the articulation points or axes of rotation 33, 34, 35, 36 on the first and second seat support elements 6, 7, the distance between the instantaneous pole 37 and the seat support 4 can vary depending on the desired movement / inclination dynamics of the registered office.

Die Lenker 31, 32 sind in dem illustrierten Beispiel als plattenförmige Koppelelemente ausgeführt, wobei die Drehgelenke zur Ankopplung an das erste und zweite Sitzträgerelement 6, 7 an der unteren und oberen Seitenkante der Lenker 31, 32 vorgesehen sind, so daß die Drehachsen 33, 43, 35, 36 parallel zu der Längsrichtung der Lenker 31, 32 verlaufen. Die Anzahl der Lenker 31, 32 auf jeder Seite der Mittellängsebene 25 kann auch größer sein. So ist es je nach konstruktiver Ausführung beispielsweise möglich, daß anstelle eines einzigen Lenkers 31, 32 pro Seite zwei oder drei Lenker pro Seite vorgesehen sind.The links 31, 32 are designed in the illustrated example as plate-shaped coupling elements, the pivot joints being provided for coupling to the first and second seat support elements 6, 7 on the lower and upper side edges of the links 31, 32, so that the axes of rotation 33, 43 , 35, 36 run parallel to the longitudinal direction of the links 31, 32. The number of links 31, 32 on each side of the central longitudinal plane 25 can also be larger. Depending on the design, it is possible, for example, that two or three links are provided on each side instead of a single link 31, 32.

Der Momentanpol 37 befindet sich vorzugsweise unterhalb des Sitzträgers 4, genauer unterhalb der Sitzfläche des Sitzes. Bei der in Fig. 18 illustrierten Variante befindet sich der Momentanpol 37 als realer Drehpunkt feststehend im Sitzträger 4. Es findet keine Translation statt, nur eine Kippbewegung.The instantaneous pole 37 is preferably located below the seat support 4, more precisely below the seat surface of the seat. At the in Fig. 18 illustrated variant, the instantaneous pole 37 is fixed as a real fulcrum in the seat support 4. There is no translation, only a tilting movement.

Es hat sich als besonders vorteilhaft erwiesen, wenn sich der Momentanpol 37 des Sitzträgers 4 bei einer Bewegung des zweiten Sitzträgerelements 7 quer zur Stuhllängsrichtung 8 stets so weit entfernt von dem Sitzträger 4 befindet, daß die Translationsanteile der Bewegung größer sind als die Rotationsanteile. Der Momentanpol 37 befindet sich außerdem vorzugsweise so weit weg von dem Sitzträger 4, daß die Translationskomponente der Bewegung des zweiten Sitzträgerelements 7 größer ist als die Rotations-/Neigungskomponente der Bewegung. Anders ausgedrückt bewegt sich das zweite Sitzträgerelement 7 auf keiner extrem gekrümmten bzw. steilen, sondern statt dessen auf eine eher flachen Bahnkurve. Das kommt einem erhöhter Sitzkomfort zugute. Vorzugsweise befindet sich der Momentanpol 37 in Bodennähe, also in der Nähe des am unteren Ende der Stuhlsäule vorgesehenen Stuhlträgers (nicht abgebildet).It has proven to be particularly advantageous if the instantaneous pole 37 of the seat support 4 changes during a movement of the second Seat support element 7 is always located so far from the seat support 4 transversely to the longitudinal direction 8 of the chair that the translation components of the movement are greater than the rotation components. The instantaneous pole 37 is also preferably so far away from the seat support 4 that the translation component of the movement of the second seat support element 7 is greater than the rotation / inclination component of the movement. In other words, the second seat support element 7 does not move on an extremely curved or steep, but instead on a rather flat path curve. This benefits increased seating comfort. The instantaneous pole 37 is preferably located near the ground, that is to say in the vicinity of the chair carrier provided at the lower end of the chair column (not shown).

Der Momentanpol 37 bewegt sich, wie in den Fig. 2 und 3 illustriert, bei einer Neigung des Sitzträgers 4 bei Anwendung der Lenkeranordnung 31, 32 (Viergelenkmechanik) ebenfalls auf einer Bahnkurve 38 (siehe Fig. 3) und ist nicht feststehend. Dies wird als besonders angenehm für die Bewegungsdynamik empfunden. Bei einer reinen Kippbewegung, wie in Fig. 18 dargestellt, ist der Momentanpol 37 lagefest.The instantaneous pole 37 moves as in FIGS Fig. 2 and 3rd illustrated, with an inclination of the seat support 4 when using the handlebar arrangement 31, 32 (four-joint mechanism) also on a trajectory 38 (see Fig. 3 ) and is not fixed. This is perceived as particularly pleasant for the movement dynamics. With a pure tilting movement, as in Fig. 18 shown, the instantaneous pole 37 is fixed.

Die durch die Lage der Achsen 33, 34, 35, 36 definierten Anlenkpunkte der beiden Lenker 31, 32 bilden (mit Blick in Stuhllängsrichtung 8) im nicht ausgelenkten Zustand ein symmetrisches, insbesondere gleichschenkeliges Trapez. Dabei bilden die beiden Lenker 31, 32, genauer gesagt die Verbindungslinien 41, 42 zwischen den oberen und unteren Anlenkpunkten (Achslagen), die Trapezschenkel, die Verbindungslinie 43 zwischen den oberen Anlenkpunkten die obere Trapezgrundseite und die Verbindungslinie 44 zwischen den unteren Anlenkpunkten die untere Trapezgrundseite.The articulation points of the two links 31, 32 defined by the position of the axes 33, 34, 35, 36 form (with a view in the longitudinal direction of the chair 8) in the undeflected state a symmetrical, in particular isosceles trapezoid. The two links 31, 32, more precisely the connecting lines 41, 42 between the upper and lower articulation points (axis positions), the trapezoidal legs, the connecting line 43 between the upper articulation points form the upper trapezoid base side and the connecting line 44 between the lower articulation points the lower trapezoidal base side .

Aufgrund der Lage der Lenker 31, 32 zum Erreichen eines unterhalb des Sitzträgers 4 angeordneten Momentanpols 37 ist die obere Grundseite des Trapezes länger ist als die untere Grundseite. Anders ausgedrückt ist der Abstand der unteren Achsen, also der Achsen 33, 35 der Gelenke der Verbindung der Lenker 31, 32 mit dem ersten (unteren) Sitzträgerelement 6, geringer als der Abstand der oberen Achsen, also der Achsen 34, 36 der Gelenke der Verbindung der Lenker 31, 32, mit dem zweiten (oberen) Sitzträgerelement 7. Aus diesem Grund handelt es sich um ein labiles System, das zum Kippen neigt. Es ist daher eine Anzahl Federelemente (nicht dargestellt) vorgesehen, die - an geeigneten Stellen angreifend - das zweite Sitzträgerelement 7 im nicht geneigten Grundzustand in Position zu dem ersten Sitzträgerelement 6 hält und im geneigten Zustand ein Rückführen des zweiten Sitzträgerelements 7 in dessen Grundstellung unterstützt bzw. bewirkt. Insbesondere sind Federelemente vorgesehen, die einerseits an dem ersten Sitzträgerelement 6 und andererseits an dem zweiten Sitzträgerelement 7 oder an den Lenkern 31, 32 angebunden sind, um das zweite Sitzträgerelement 7 in seiner nicht nach rechts oder links geneigten Grundstellung zu halten.Due to the position of the links 31, 32 for reaching an instantaneous pole 37 arranged below the seat support 4, the upper base side of the trapezoid is longer than the lower base side. In other words, the distance between the lower axes, that is, the axes 33, 35 of the joints connecting the links 31, 32 to the first (lower) seat support element 6, is less than the distance between the upper axes, that is, the axes 34, 36 of the joints of the Connection of the handlebars 31, 32 with the second (upper) seat support element 7. For this reason, it is an unstable system that tends to tip over. A number of spring elements (not shown) are therefore provided, which - attacking at suitable points - hold the second seat support element 7 in position in the non-inclined basic state in relation to the first seat support element 6 and, in the inclined state, support or return the second seat support element 7 to its basic position . causes. In particular, spring elements are provided, which are connected on the one hand to the first seat support element 6 and on the other hand to the second seat support element 7 or to the links 31, 32 in order to hold the second seat support element 7 in its basic position not inclined to the right or left.

In weiteren Beispielen sind andere Arten der Verbindung der beiden Sitzträgerelemente 6, 7 gezeigt. In den Beispielen (Fig. 16 und 17) ist das zweite Sitzträgerelement 7 mit dem ersten Sitzträgerelement 6 verbunden, indem das zweite Sitzträgerelement 7 auf einer die Bewegungsbahn des zweiten Sitzträgerelements 7 definierenden Oberfläche 45 des ersten Sitzträgerelements 6 gleitend (Fig. 16) oder rollend (Fig. 17) aufliegt, und zwar unmittelbar oder mittelbar, z.B. über Kugellager 46 oder dergleichen. Die Form der Oberfläche 45 definiert dabei die Bewegungsbahn des zweiten Sitzträgerelements 7 quer zur Stuhllängsrichtung 8. Auch bei Anwendung einer solchen Roll- oder Gleitbahn kann ein wandernder Momentanpol 37 durch die Gestaltung der Oberfläche 45 der Roll- oder Gleitbahn erreicht werden. Vorzugsweise wirkt dabei eine in Richtung des zweiten Sitzträgerelements 7 konvex gewölbte Oberfläche 45 des ersten Sitzträgerelements 6 mit einer in Richtung des ersten Sitzträgerelements 6 konkav gewölbte Oberfläche 47 des zweiten Sitzträgerelements 7 zusammen.In other examples, other types of connection of the two seat support elements 6, 7 are shown. In the examples ( 16 and 17 ) the second seat support element 7 is connected to the first seat support element 6 in that the second seat support element 7 slides on a surface 45 of the first seat support element 6 which defines the movement path of the second seat support element 7 ( Fig. 16 ) or rolling ( Fig. 17 ) rests, directly or indirectly, for example via ball bearings 46 or the like. The shape of the surface 45 defines the path of movement of the second Seat support element 7 transversely to the longitudinal direction of the chair 8. Even when using such a roller or slideway, a wandering instantaneous pole 37 can be achieved by designing the surface 45 of the roller or slideway. Preferably, a surface 45 of the first seat support element 6 convexly curved in the direction of the second seat support element 7 interacts with a surface 47 of the second seat support element 7 concavely curved in the direction of the first seat support element 6.

Es ist aber nicht nur möglich, das erste und das zweite Sitzträgerelement 6, 7 als zwei voneinander getrennte Bauteile auszuführen, die mechanisch miteinander verbunden sind, z.B. über die beschriebenen Koppelelemente (Lenker 31, 32). Zum Beispiel kann zwischen dem ersten und dem zweiten Sitzträgerelement 6, 7 als drittes Bauteil wenigstens ein elastisches Koppelelement (nicht abgebildet) angeordnet sein, beispielsweise in Form eines quader- oder zylinderförmigen Pufferelements, welches die benötigte Bewegbarkeit der beiden Sitzträgerelemente 6, 7 zueinander sicherstellt. Dabei ist das Pufferelement beispielsweise so aufgebaut, daß zwischen einer Grundplatte und einer Deckplatte ein gummielastischer Werkstoff angeordnet ist. Derartige oder ähnliche Pufferelemente können auch zwischen den zueinander bewegbaren Mechanikkomponenten 6, 7 usw. als Anschlagselemente zur Bewegungsbegrenzung vorgesehen sein.However, it is not only possible to design the first and second seat support elements 6, 7 as two separate components which are mechanically connected to one another, e.g. about the coupling elements described (handlebars 31, 32). For example, at least one elastic coupling element (not shown) can be arranged as a third component between the first and second seat support elements 6, 7, for example in the form of a cuboid or cylindrical buffer element, which ensures the required mobility of the two seat support elements 6, 7 relative to one another. The buffer element is constructed, for example, in such a way that a rubber-elastic material is arranged between a base plate and a cover plate. Such or similar buffer elements can also be provided between the mutually movable mechanical components 6, 7, etc. as stop elements for limiting movement.

Beispielsweise ist auch eine einteilige Ausführung der beiden Sitzträgerelemente 6, 7 möglich, vorzugsweise unter Verwendung von geeignetem, flexiblen bzw. elastischen Verbindungsmaterial, das eine Querbewegung und/oder Neigung des zweiten Sitzträgerelements 7 relativ zu dem ersten Sitzträgerelement 6 erlaubt. Eine solche Variante ist besonders vorteilhaft herstellbar, beispielsweise unter Verwendung eines Mehrkomponenten-Spritzgußverfahrens mit verschiedenen geeigneten Kunststoffen. Die Mechanikkomponenten sind in diesem Fall vorzugsweise rückfedernd konstruiert, d.h. insbesondere zum Zurückführen des bewegten bzw. ausgelenkten Elements in die Grundposition ausgebildet. Die sonst notwendigen Federelemente zum Aufrichten des zweiten Sitzträgerelements 7 bzw. zum Halten des Gleichgewichtszustands des zweiten Sitzträgerelements 7 im unbesetzten Zustand können dann wegfallen.For example, a one-piece design of the two seat support elements 6, 7 is also possible, preferably using a suitable, flexible or elastic connecting material which allows the second seat support element 7 to move and / or incline relative to the first seat support element 6. Such a variant is can be produced particularly advantageously, for example using a multi-component injection molding process with various suitable plastics. In this case, the mechanical components are preferably designed to be resilient, that is to say in particular designed to return the moved or deflected element to the basic position. The otherwise necessary spring elements for erecting the second seat support element 7 or for maintaining the equilibrium state of the second seat support element 7 in the unoccupied state can then be omitted.

In der in den Fig. 1 bis 15 illustrierten Variante umfaßt die Bewegung des zweiten Rückenlehnenträgerelements 11 ausschließlich eine Rotation. Die zur Drehung des Rückenlehnenträgerelements 11 erforderliche zentrale Drehachse 12 (Neigeachse) verläuft dabei vorzugsweise unterhalb der Sitzfläche des Sitzes. Im dargestellten Beispiel verläuft die Drehachse 12 des Rückenlehnenträgers 5 in Stuhllängsrichtung 8 und parallel zu den Drehachsen 33, 34, 35, 36 der Lenkeranordnung 31, 32, und somit senkrecht zu den Drehachsen 15, 16, 22, 23 von Basisträger 2, Sitzträger 4 und Rückenlehnenträger 5. Außerdem ist die Drehachse 12 in vertikaler Richtung zwischen den ersten Drehachsen 33, 35 der Lenker 31, 32 und den zweiten Drehachsen 34, 36 der Lenker 31, 32 angeordnet.In the in the 1 to 15 illustrated variant, the movement of the second backrest support element 11 comprises only one rotation. The central axis of rotation 12 (tilt axis) required for rotating the backrest support element 11 preferably runs below the seat surface of the seat. In the example shown, the axis of rotation 12 of the backrest support 5 runs in the longitudinal direction 8 of the chair and parallel to the axes of rotation 33, 34, 35, 36 of the handlebar arrangement 31, 32, and thus perpendicular to the axes of rotation 15, 16, 22, 23 of base support 2, seat support 4 and backrest support 5. In addition, the axis of rotation 12 is arranged in the vertical direction between the first axes of rotation 33, 35 of the links 31, 32 and the second axes of rotation 34, 36 of the links 31, 32.

Vorzugsweise sind das erste und das zweite Rückenlehnenträgerelement 9, 11 als zwei voneinander getrennte Bauteile ausgeführt, die mechanisch miteinander verbunden sind, z.B. über eine stoßseitige Verbindung mit rotatorischem Freiheitsgrad. Alternativ ist jedoch auch eine einteilige Ausführung der beiden Rückenlehnenträgerelemente 9, 11 möglich, vorzugsweise unter Verwendung von geeignetem, flexiblen bzw. elastischen Verbindungsmaterial, das ein Verdrehen des zweiten Rückenlehnenträgerelements 11 um die Drehachse 12 erlaubt.The first and the second backrest support elements 9, 11 are preferably designed as two separate components which are mechanically connected to one another, for example via a butt joint with a rotational degree of freedom. Alternatively, however, a one-piece design of the two backrest support elements 9, 11 is also possible, preferably using a suitable, flexible or elastic one Connection material that allows the second backrest support element 11 to be rotated about the axis of rotation 12.

Das zweite Rückenlehnenträgerelement 11 ist vorzugsweise als zentraler Tragarm ausgeführt, der sich mittig nach hinten von der Stuhlmechanik 1 weg erstreckt. Alternativ ist das zweite Rückenlehnenträgerelement 11 als Teil eines Rahmens 50 für die Rückenlehne ausgeführt, beispielsweise als zentrales Verbindungselement zwischen dem Rückenlehnenträger 5 und einer unteren Querstrebe des Rahmens 50.The second backrest support element 11 is preferably designed as a central support arm, which extends centrally backwards away from the chair mechanism 1. Alternatively, the second backrest support element 11 is designed as part of a frame 50 for the backrest, for example as a central connecting element between the backrest support 5 and a lower cross strut of the frame 50.

Vorzugsweise ist das zweite Rückenlehnenträgerelement 11 mit dem zweiten Sitzträgerelement 7 derart gekoppelt, daß eine Bewegung des zweiten Sitzträgerelements 7 relativ zu dem ersten Sitzträgerelement 6 eine Bewegung des zweiten Rückenlehnenträgerelements 11 relativ zu dem ersten Rückenlehnenträgerelement 9, genauer eine Neigung des zweiten Rückenlehnenträgerelements 11 nach rechts oder links, bewirkt (oder umgekehrt). Mit anderen Worten findet eine vorteilhafte Kombination der beiden Neigebewegungen statt. Nicht nur der Sitz neigt sich (nach rechts oder links), sondern auch die Rückenlehne. Eine feststehende Rückenlehne wäre bei einem sich neigenden Sitz weniger komfortabel. Die seitliche Neigung des Sitzes bzw. der Rückenlehne (ohne eine Verschwenkung des Sitzträgers 4 nach hinten durch den Rückenlehnenträger 5) ist in den Fig. 3, 6, 10, 14 dargestellt.Preferably, the second backrest support element 11 is coupled to the second seat support element 7 such that a movement of the second seat support element 7 relative to the first seat support element 6 a movement of the second backrest support element 11 relative to the first backrest support element 9, more precisely an inclination of the second backrest support element 11 to the right or left, effected (or vice versa). In other words, there is an advantageous combination of the two tilting movements. Not only the seat tilts (to the right or left), but also the backrest. A fixed backrest would be less comfortable with a reclining seat. The lateral inclination of the seat or the backrest (without pivoting the seat support 4 backwards through the backrest support 5) is in the Fig. 3 , 6 , 10th , 14 shown.

Die Neigebewegung des Rückenlehnenträgers 5, genauer gesagt die Neigebewegung des zweiten Rückenlehnenträgerelements 11 und damit der Rückenlehne, wird allein und ausschließlich durch die Anlenkung des zweiten Rückenlehnenträgerelements 11 an das zweite Sitzträgerelement 7 induziert.The tilting movement of the backrest support 5, more precisely the tilting movement of the second backrest support element 11 and thus the backrest, is induced solely and exclusively by the articulation of the second backrest support element 11 to the second seat support element 7.

Vorzugsweise erfolgt bei einer Bewegung des zweiten Sitzträgerelements 7 relativ zu dem ersten Sitzträgerelement 6 in Stuhllängsrichtung 8 gesehen eine seitliche Neigung der von dem zweiten Rückenlehnenträgerelement 11 getragenen Rückenlehne. Die konkrete Ausführung der Rückenlehne ist dabei für die Erfindung unerheblich.When the second seat support element 7 moves relative to the first seat support element 6 in the longitudinal direction of the chair 8, there is preferably a lateral inclination of the backrest carried by the second backrest support element 11. The specific design of the backrest is irrelevant to the invention.

Bei der in den Fig. 1 bis 15 dargestellten Variante ist das zweite Rückenlehnenträgerelement 11 mit dem zweiten Sitzträgerelement 7 verbunden, indem ein Verbindungsarm 48 des zweiten Rückenlehnenträgerelements 11 mit seinem freien Ende 49 in eine Aufnahmeöffnung 51 des zweiten Sitzträgerelements 7 eingreift bzw. in einer solchen Aufnahmeöffnung 51 einliegt. Die Einleitung der Kraft bzw. die Übertragung des Drehmoments von dem zweiten Sitzträgerelement 7 auf das zweite Rückenlehnenträgerelement 11 erfolgt ausschließlich über den Verbindungsarm 48.In the in the 1 to 15 In the variant shown, the second backrest support element 11 is connected to the second seat support element 7 in that a connecting arm 48 of the second backrest support element 11 engages with its free end 49 in a receiving opening 51 of the second seat support element 7 or lies in such a receiving opening 51. The introduction of the force or the transmission of the torque from the second seat support element 7 to the second backrest support element 11 takes place exclusively via the connecting arm 48.

Der Verbindungsarm 48 ist dabei vorzugsweise nicht drehfest ausgeführt, d.h. das Freiende 49 liegt drehbar in der Aufnahmeöffnung 51 ein. Das Freiende 49 ist dabei sowohl axial, d.h. in Stuhllängsrichtung 8, als auch vertikal in der Aufnahmeöffnung 51 verschiebbar, so daß sich der Verbindungsarm 48 - entsprechend der kombinierten Translations-/Rotationsbewegung des zweiten Sitzträgerelements 7 auf der definierten Bahnkurve 28 relativ zu dem ersten Sitzträgerelement 6 - mit begrenzten Freiheitsgraden mitbewegen kann derart, daß er eine (reine) Drehbewegung des zweiten Rückenlehnenträgerelements 11 um dessen Drehachse 12 relativ zu dem ersten Rückenlehnenträgerelement 9 bewirkt.The connecting arm 48 is preferably not rotationally fixed, i.e. the free end 49 lies rotatably in the receiving opening 51. The free end 49 is both axial, i.e. Can be moved in the longitudinal direction 8 of the chair and vertically in the receiving opening 51, so that the connecting arm 48 can move with limited degrees of freedom in accordance with the combined translation / rotation movement of the second seat support element 7 on the defined trajectory 28 relative to the first seat support element 6. that it causes a (pure) rotational movement of the second backrest support element 11 about its axis of rotation 12 relative to the first backrest support element 9.

Realisiert wird diese Ankopplung z.B. durch einen am freien Ende 49 des Verbindungsarmes 48 angebrachten Kulissenstein 52 oder dergleichen, der in der nach Art einer Nut ausgebildeten Kulisse bzw. Aufnahmeöffnung 51 des zweiten Sitzträgerelements 7 (dort an den vertikalen Seitenflächen der Nut anliegend) einliegt. Dabei wird die Bewegung der Kulisse und damit die Bewegung des zweiten Sitzträgerelemente 7 auf den zwangsgeführten Kulissenstein 52 übertragen, wobei der rotatorische Freiheitsgrad durch eine geeignete Drehverbindung des Kulissensteins 52 mit dem Verbindungsarm 48 verwirklicht wird.This coupling is implemented, for example, by a sliding block 52 or the like attached to the free end 49 of the connecting arm 48, which is in the form of a groove in the setting or receiving opening 51 of the second seat support element 7 (lying there against the vertical side surfaces of the groove). The movement of the link and thus the movement of the second seat support elements 7 is transmitted to the positively guided link block 52, the rotational degree of freedom being achieved by a suitable rotary connection of the link block 52 to the connecting arm 48.

Die Zweiteilung des Rückenlehnenträgers 5 erfolgt dabei so, daß das erste Rückenlehnenträgerelement 9 wie der in Stuhllängsrichtung 8 gesehen vordere Teil des Rückenlehnenträgers 5 die Anbindung der Rückenlehne an den Basisträger 2 und das erste Sitzträgerelement 6 realisiert, während das zweite Rückenlehnenträgerelement 11, welches sich in Stuhllängsrichtung 8 gesehen nach hinten an das erste Rückenlehnenträgerelement 9 anschließt, den Übergang zu der Rückenlehne bildet, zugleich jedoch an das zweite Sitzträgerelement 7 angekoppelt ist.The backrest support 5 is divided in such a way that the first backrest support element 9, like the front part of the backrest support 5 seen in the longitudinal direction 8 of the chair, realizes the connection of the backrest to the base support 2 and the first seat support element 6, while the second backrest support element 11, which extends in the longitudinal direction of the chair 8 seen to the rear connects to the first backrest support element 9, forms the transition to the backrest, but at the same time is coupled to the second seat support element 7.

Alternativ erfolgt die Verbindung bzw. Ankopplung des zweiten Sitzträgerelements 7 an das zweite Rückenlehnenträgerelement 11 über eine Anzahl mit dem zweiten Sitzträgerelement 7 und dem zweiten Rückenlehnenträgerelement 11 gelenkig verbundene Lenker (nicht abgebildet), die vorzugsweise so ausgeführt sind, wie die Lenker zwischen den beiden Sitzträgerelementen 6, 7 nach Art einer Viergelenkmechanik, oder aber über andere Koppelelemente. Alternativ erfolgt die Verbindung bzw. Ankopplung des zweiten Sitzträgerelements 7 an das zweite Rückenlehnenträgerelement 11 über eine einteilige Ausführung von Sitzträgerelement 7 und Rückenlehnenträgerelement 11 unter Verwendung eines geeigneten, flexiblen bzw. elastischen Materials.Alternatively, the connection or coupling of the second seat support element 7 to the second backrest support element 11 takes place via a number of links (not shown) articulatedly connected to the second seat support element 7 and the second backrest support element 11, which are preferably designed as the links between the two seat support elements 6, 7 in the manner of a four-bar mechanism, or via other coupling elements. Alternatively, the connection or coupling of the second seat support element 7 to the second backrest support element 11 takes place via a one-piece design of the seat support element 7 and the backrest support element 11 using a suitable, flexible or elastic material.

Als besonders vorteilhaft hat sich eine Variante herausgestellt, bei der die Neigung der Rückenlehne bzw. des zweiten Rückenlehnenträgerelements 11 von der Neigung des Sitzes bzw. des zweiten Sitzträgerelements 7 verschieden ist. Mit der Erfindung ist es also nicht nur möglich, ausschließlich eine Neigebewegung des zweiten Sitzträgerelements 7 nach rechts oder links zu verwirklichen, ohne daß dies zu einer Folgebewegung des Rückenlehnenträgers 5 führt; hierfür muß lediglich die Ankopplung des Rückenlehnenträgers 5 an das zweite Sitzträgerelement 7 entfallen. Die Neigebewegungen der beteiligten Elemente können auch voneinander abweichen. Im einfachsten Fall entspricht zwar die Neigung des zweiten Rückenlehnenträgerelements 11 und damit der Rückenlehne der Neigung des zweiten Sitzträgerelements 7 und damit des Sitzes. Vorzugsweise bewegt sich die Rückenlehne jedoch in einem abweichenden Verhältnis zu dem sich neigenden Sitz, d.h. die beiden Neigungswinkel sind ungleich. Ein ungleiches Neigungsmaß hat sich als besonders benutzerfreundlich herausgestellt, insbesondere dann, wenn einer Neigung des zweiten Sitzträgerelements 7 um einen bestimmten Neigungswinkel eine Neigung des zweiten Rückenlehnenträgerelements 11 um einen größeren Neigungswinkel folgt, wie in den Fig. 6, 10 und 14 dargestellt.A variant has proven to be particularly advantageous in which the inclination of the backrest or of the second backrest support element 11 is different from the inclination of the seat or of the second seat support element 7. With the invention it is therefore not only possible to exclusively implement a tilting movement of the second seat support element 7 to the right or left without this leading to a subsequent movement of the backrest support 5; for this purpose, only the coupling of the backrest support 5 to the second seat support element 7 has to be omitted. The tilting movements of the elements involved can also differ from one another. In the simplest case, the inclination of the second backrest support element 11 and thus the backrest corresponds to the inclination of the second seat support element 7 and thus the seat. However, the backrest preferably moves in a different ratio to the inclined seat, ie the two angles of inclination are not the same. An uneven degree of inclination has turned out to be particularly user-friendly, in particular if an inclination of the second seat support element 7 by a certain inclination angle is followed by an inclination of the second backrest support element 11 by a larger inclination angle, as in FIGS Fig. 6 , 10th and 14 shown.

Vorzugsweise befindet sich die Lage der Drehachse 12 des Rückenlehnenträgers 5 unterhalb des Verbindungspunktes des Freiendes 49 des Verbindungsarmes 48 mit dem Sitzträger 4, also unterhalb des Punktes, an dem der Kulissenstein 52 in der Aufnahmeöffnung 51 einliegt. Dadurch wird erreicht, daß sich die Rückenlehne in die gleiche Richtung neigt, wie der Sitz. Eine gegenläufige Verschenkung der Rückenlehne (Verschwenken in die entgegengesetzte Richtung) kann entsprechend durch eine umgekehrte Anordnung dieser beiden Punkte zueinander erreicht werden.The position of the axis of rotation 12 of the backrest support 5 is preferably below the connection point of the free end 49 of the connection arm 48 with the seat support 4, that is to say below the point at which the sliding block 52 lies in the receiving opening 51. It is thereby achieved that the backrest tilts in the same direction as the seat. A counter-giving away of the backrest (pivoting in the opposite direction) can accordingly by a reverse order of these two points can be achieved.

Je weiter der Momentanpol 37 des zweiten Sitzträgerelements 7 von der ortsfesten Drehachse 12 des Rückenlehnenträgers 5 entfernt ist, desto größer ist die Abweichung der Neigungsbewegung des zweiten Rückenlehnenträgerelements 11 zu der des zweiten Sitzträgerelements 7. Es kann somit das gewünschte Neigungsverhältnis zwischen Sitz und Rückenlehne eingestellt werden, insbesondere durch die konstruktive Anordnung der Lage der Achsen 33, 34, 35, 36, durch die definierte Einstellung der Abstände der Achsen 33, 34, 35, 36 zueinander und/oder durch die Anordnung der realen und virtuellen Drehpunkte 37 der beteiligten Komponenten der Stuhlmechanik 1.The further the instantaneous pole 37 of the second seat support element 7 is from the fixed axis of rotation 12 of the backrest support 5, the greater the deviation of the inclination movement of the second backrest support element 11 from that of the second seat support element 7. The desired inclination ratio between seat and backrest can thus be set , in particular by the structural arrangement of the position of the axes 33, 34, 35, 36, by the defined setting of the distances between the axes 33, 34, 35, 36 to one another and / or by the arrangement of the real and virtual pivot points 37 of the components involved Chair mechanics 1.

Als besonders vorteilhaft gilt eine Variante der Erfindung, bei welcher der Rückenlehnenträger 5, genauer das erste Rückenlehnenträgerelement 9, mit dem Sitzträger 4, genauer mit dem ersten Sitzträgerelement 6, derart gekoppelt ist, daß ein Verschwenken des Rückenlehnenträgers 5 in Stuhllängsrichtung 8 eine Bewegung des Sitzträgers 4 in Stuhllängsrichtung 8 um eine quer zur Stuhllängsrichtung 8 verlaufende Schwenkachse relativ zu dem Basisträger 2 bewirkt ("Synchronmechanik"). Anstelle einer solchen klassischen Synchronmechanik können von der Stuhlmechanik 1, die mit der Erfindung versehen wird, aber auch andere Mechaniktypen verwirklicht sein, wie Asynchronmechaniken, Wippmechaniken oder Mischtypen.A variant of the invention is particularly advantageous in which the backrest support 5, more precisely the first backrest support element 9, is coupled to the seat support 4, more precisely to the first seat support element 6, in such a way that pivoting of the backrest support 5 in the longitudinal direction 8 of the chair causes movement of the seat support 4 in the longitudinal direction 8 of the chair around a pivot axis running transversely to the longitudinal direction 8 of the chair relative to the base support 2 (“synchronous mechanism”). Instead of such a classic synchronous mechanism, the chair mechanism 1 which is provided with the invention can also be used to implement other mechanical types, such as asynchronous mechanisms, rocker mechanisms or mixed types.

Dabei ist die (Neige-) Bewegung des zweiten Sitzträgerelements 7 relativ zu dem ersten Sitzträgerelement 6 unabhängig von einer sonstigen Bewegung des Sitzträgers 4 in Stuhllängsrichtung 8, insbesondere unabhängig von der von dem Rückenlehnenträger 5 bewirkten (Schwenk-)Bewegung des Sitzträgers 4. Erreicht wird diese konstruktive und funktionale Unabhängigkeit der Bewegungen durch die Trennung des Sitzträgers 4 in die zwei Sitzträgerelemente 6, 7. Beide Bewegungen sind unabhängig voneinander, d.h. nicht aneinander gekoppelt, möglich, auch einander überlagernd. Beispielsweise wird unabhängig von einer Neigebewegung des zweiten Sitzträgerelements 7 nach rechts oder links der gesamte Sitzträger 4 bei einem Verschwenken des Rückenlehnenträgers 5 nach hinten mitgenommen und eine Neigebewegung des zweiten Sitzträgerelements 7 nach rechts und links kann im nichtverschwenkten Zustand der Mechanik 1 oder aber auch zusätzlich zu einem Verschwenken der Rückenlehne erfolgen.The (tilting) movement of the second seat support element 7 relative to the first seat support element 6 is independent of any other movement of the seat support 4 in the longitudinal direction 8 of the chair, in particular independent of the (pivoting) movement of the seat support 4 caused by the backrest support 5 this constructive and functional independence of the movements by separating the seat support 4 into the two seat support elements 6, 7. Both movements are possible independently of one another, ie not coupled to one another, and also overlapping one another. For example, regardless of a tilting movement of the second seat support element 7 to the right or left, the entire seat support 4 is taken along when the backrest support 5 is pivoted backwards and a tilting movement of the second seat support element 7 to the right and left can be in the non-pivoted state of the mechanism 1 or in addition swivel the backrest.

Illustriert wird dies beispielhaft in den Fig. 4 bis 15 anhand des ersten Ausführungsbeispiels. Darin zeigen die Fig. 4 bis 7 die Mechanik in Seitenansicht, nämlich in der Ausgangsstellung (Fig. 4), nach hinten verschwenkt (Fig. 5), mit seitlich geneigtem Sitz und Rückenlehne (Fig. 6) sowie in einer sowohl geneigten als auch verschwenkten Stellung (Fig. 7) . Es zeigen die Fig. 8 bis 11 die Mechanik von vorn, nämlich in der Ausgangsstellung (Fig. 8), nach hinten verschwenkt (Fig. 9), mit seitlich geneigtem Sitz und Rückenlehne (Fig. 10) sowie in einer sowohl geneigten als auch verschwenkten Stellung (Fig. 11). Es zeigen die Fig. 12 bis 15 die Mechanik von hinten, nämlich in der Ausgangsstellung (Fig. 12), nach hinten verschwenkt (Fig. 13), mit seitlich geneigtem Sitz und Rückenlehne (Fig. 14) sowie in einer sowohl geneigten als auch verschwenkten Stellung (Fig. 15) .This is exemplified in the 4 to 15 based on the first embodiment. In it show the 4 to 7 the mechanics in side view, namely in the starting position ( Fig. 4 ), pivoted backwards ( Fig. 5 ), with a laterally inclined seat and backrest ( Fig. 6 ) as well as in a tilted and swiveled position ( Fig. 7 ). They show 8 to 11 the mechanics from the front, namely in the starting position ( Fig. 8 ), pivoted backwards ( Fig. 9 ), with a laterally inclined seat and backrest ( Fig. 10 ) as well as in a tilted and swiveled position ( Fig. 11 ). They show 12 to 15 the mechanics from behind, namely in the starting position ( Fig. 12 ), pivoted backwards ( Fig. 13 ), with a laterally inclined seat and backrest ( Fig. 14 ) as well as in a tilted and swiveled position ( Fig. 15 ).

Gegenüber einer herkömmlichen Stuhlmechanik wird mit der Erfindung die Anzahl der Freiheitsgrade erhöht, indem für den Sitzträger 4 und optionale auch für den Rückenlehnenträger 5 weitere Freiheitsgrade vorgesehen werden. Es ergibt sich gegenüber herkömmlichen Lösungen ein verbessertes Bewegungsverhalten des Stuhls auf Bewegungen des Benutzers.Compared to conventional chair mechanics, the invention increases the number of degrees of freedom by providing additional degrees of freedom for the seat support 4 and optionally also for the backrest support 5. Compared to conventional solutions, there is an improved movement behavior of the chair on movements of the user.

BezugszeichenlisteReference list

11
Mechanikmechanics
22nd
BasisträgerBase carrier
33rd
KonusaufnahmeCone seat
44th
SitzträgerSeat support
55
RückenlehnenträgerBackrest support
66
erstes Sitzträgerelementfirst seat support element
77
zweites Sitzträgerelementsecond seat support element
88th
StuhllängsrichtungLongitudinal direction of the chair
99
erstes Rückenlehnenträgerelementfirst backrest support element
1010th
(frei)(free)
1111
zweites Rückenlehnenträgerelementsecond backrest support element
1212th
Drehachse des RückenlehnenträgersAxis of rotation of the backrest support
1313
hinteres Ende des ersten Sitzträgerelementsrear end of the first seat support element
1414
hinteres Ende des Basisträgersrear end of the base support
1515
hintere Drehachserear axis of rotation
1616
hintere Drehachserear axis of rotation
1717th
hinteres Koppelelementrear coupling element
1818th
vorderes Koppelelementfront coupling element
1919th
vorderes Ende des ersten Sitzträgerelementsfront end of the first seat support element
2020th
(frei)(free)
2121
vorderes Ende des Basisträgersfront end of the base support
2222
vordere Drehachsefront axis of rotation
2323
vordere Drehachsefront axis of rotation
2424th
SchwenkrichtungSwivel direction
2525th
MittellängsebeneMedian longitudinal plane
2626
StuhlvorderseiteFront of chair
2727
StuhlhinterseiteBack of chair
2828
BahnkurveTrajectory
2929
Ebene der BahnkurveLevel of the trajectory
3030th
(frei)(free)
3131
erster Lenkerfirst driver
3232
zweiter Lenkersecond handlebar
3333
erste Drehachse des ersten Lenkersfirst axis of rotation of the first link
3434
zweite Drehachse des ersten Lenkerssecond axis of rotation of the first link
3535
erste Drehachse des zweiten Lenkersfirst axis of rotation of the second link
3636
zweite Drehachse des zweiten Lenkerssecond axis of rotation of the second link
3737
virtueller Drehpunkt, Momentanpolvirtual pivot, instantaneous pole
3838
Bahnkurve des MomentanpolsPath curve of the current pole
3939
(frei)(free)
4040
(frei)(free)
4141
vertikale Verbindungslinievertical connecting line
4242
vertikale Verbindungslinievertical connecting line
4343
horizontale Verbindungsliniehorizontal connecting line
4444
horizontale Verbindungsliniehorizontal connecting line
4545
Oberfläche des ersten Sitzträgerelements, Roll-/GleitbahnSurface of the first seat support element, roller / slideway
4646
Kugellagerball-bearing
4747
Oberfläche des zweiten SitzträgerelementsSurface of the second seat support element
4848
VerbindungsarmConnecting arm
4949
FreiendeFreeers
5050
Rahmenframe
5151
AufnahmeöffnungReceiving opening
5252
KulissensteinSliding block

Claims (10)

  1. A mechanism (1) for a chair, in particular for an office chair,
    having a base support (2) which is placeable on a chair column,
    having a seat support (4) which is arranged on the base support (2) and is movable in the longitudinal direction (8) of the chair relative to the base support (2),
    and having a backrest support (5) which is connected to the seat support (4),
    wherein
    the seat support (4) includes a first seat support element (6) and a second seat support element (7), wherein the second seat support element (7) is movable transversely with respect to the longitudinal direction (8) of the chair relative to the first seat support element (6)
    or
    the seat support (4) includes a first seat support element (6) and a second seat support element (7), wherein the second seat support element (7) is movable transversely with respect to the longitudinal direction (8) of the chair relative to the first seat support element (6), and the backrest support (5) includes a first backrest support element (9) and a second backrest support element (11), wherein the second backrest support element (11) is rotatable relative to the first backrest support element (9) about a rotational axis (12) which lies in the longitudinal direction (8) of the chair,
    wherein the movement of the second seat support element (7) includes a translation and a rotation,
    characterized in that the second seat support element (7) is connected to the first seat support element (6) by means of at least one controller arrangement (31, 32), wherein the controller arrangement includes two controllers (31, 32), wherein each controller (31, 32) is pivotably mounted both on the first seat support element (6) so as to be rotatable about a first rotational axis (33, 35) and on the second seat support element (7) so as to be rotatable about a second rotational axis (34, 36), wherein all rotational axes (33, 34, 35, 36) are parallel with one another and extend in the longitudinal direction (8) of the chair.
  2. The mechanism (1) as claimed in claim 1, wherein when the second seat support element (7) is moved relative to the first seat support element (6), the seat supported by the second seat support element (7), when viewed in the longitudinal direction (8) of the chair, tilts to the side.
  3. The mechanism (1) as claimed in claim 1 or 2, wherein the instantaneous center of rotation (37) of the second seat support element (7), when the second seat support element (7) is moved transversely with respect to the longitudinal direction (8) of the chair, is always situated so far removed from the seat support (4) that the translation proportions of the movement are greater than the rotation proportions.
  4. The mechanism (1) as claimed in one of claims 1 to 3, wherein the second backrest support element (11) is coupled with the second seat support element (7) in such a manner that a movement of the second seat support element (7) relative to the first seat support element (6) brings about a movement of the second backrest support element (11) relative to the first backrest support element (9).
  5. The mechanism (1) as claimed in one of claims 1 to 4, wherein when the second seat support element (7) moves relative to the first seat support element (6), the backrest supported by the second backrest support element (11), when viewed in the longitudinal direction (8) of the chair, tilts to the side.
  6. The mechanism (1) as claimed in one of claims 1 to 5, wherein the tilting of the backrest is different to the tilting of the seat.
  7. The mechanism (1) as claimed in one of claims 1 to 6, wherein the second backrest support element (11) is connected to the second seat support element (7) by a connecting arm (48) of the second backrest support element (11) engaging in a receiving opening (51) of the second seat support element (7).
  8. The mechanism (1) as claimed in one of claims 1 to 7, wherein the backrest support (5) is coupled with the seat support (4) in such a manner that pivoting of the backrest support (5) brings about a movement of the seat support (4) in the longitudinal direction (8) of the chair relative to the base support (2).
  9. The mechanism (1) as claimed in claim 8, wherein the movement of the second seat support element (7) relative to the first seat support element (6) is independent of the movement of the seat support (4) brought about by the backrest support (5).
  10. A chair, in particular office chair, having a mechanism (1) as claimed in one of claims 1 to 9.
EP18000037.4A 2017-01-04 2018-01-04 Mechanism for a chair Active EP3345507B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017100117 2017-01-04
DE202017102909.3U DE202017102909U1 (en) 2017-01-04 2017-05-15 Chair with one-piece seat shell

Publications (2)

Publication Number Publication Date
EP3345507A1 EP3345507A1 (en) 2018-07-11
EP3345507B1 true EP3345507B1 (en) 2020-04-29

Family

ID=62026929

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18150177.6A Active EP3345508B1 (en) 2017-01-04 2018-01-03 Seat with one-piece seat shell
EP18000037.4A Active EP3345507B1 (en) 2017-01-04 2018-01-04 Mechanism for a chair

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP18150177.6A Active EP3345508B1 (en) 2017-01-04 2018-01-03 Seat with one-piece seat shell

Country Status (3)

Country Link
US (1) US10499742B2 (en)
EP (2) EP3345508B1 (en)
DE (1) DE202017102909U1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111329274B (en) * 2016-02-23 2023-08-08 国誉株式会社 Chair and seat support mechanism
US10702066B2 (en) * 2018-11-19 2020-07-07 Profim SP. ZO.O Office chair
DE102020124975A1 (en) * 2020-09-24 2022-03-24 Bock 1 Gmbh & Co. Kg Mechanism for a chair

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10106791A1 (en) * 2001-02-12 2002-08-14 Sdm Hansen Gmbh St Margrethen Chair has seat which is mounted on three springs arranged in triangle which are connected to support frame, back rest being mounted so that it can rotate about its longitudinal axis

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH666171A5 (en) * 1984-10-03 1988-07-15 Giroflex Entwicklungs Ag CHAIR WITH REAR TILTABLE SEAT AND BACKREST CARRIER.
US5538326A (en) * 1994-11-14 1996-07-23 Milsco Manufacturing Company Flexible unitary seat shell
WO2000078185A2 (en) * 1999-06-17 2000-12-28 Steelcase Inc. Chair construction
ITMI20022194A1 (en) * 2002-10-16 2004-04-17 Icf Spa CHAIR WITH SEAT AND FURNITURE BACK.
US7857390B2 (en) * 2006-03-24 2010-12-28 Herman Miller, Inc. Piece of furniture
DE102008011309B3 (en) * 2008-02-27 2009-06-04 Thonet Gmbh office chair
NO328092B1 (en) * 2008-03-10 2009-12-07 Efg Europ Furniture Group Ab Rygge Stott device
AT12867U1 (en) * 2011-05-04 2013-01-15 Eckhard Dipl Ing Hansen seating
DE202012002288U1 (en) * 2012-03-08 2012-05-11 Walter Knoll Ag & Co. Kg functional chair
DE102012107778B4 (en) 2012-08-23 2018-08-16 Haworth Gmbh Chair, especially office chair
EP2910147B1 (en) * 2012-10-18 2018-11-07 Okamura Corporation Chair
DE102014103780B3 (en) 2014-03-19 2015-06-18 Wilkhahn Wilkening + Hahne Gmbh + Co. chair
DE202014101592U1 (en) 2014-04-04 2014-06-30 Wilkhahn Wilkening + Hahne Gmbh + Co. chair
DE102014119612A1 (en) * 2014-12-23 2016-06-23 Recaro Aircraft Seating Gmbh & Co. Kg Seat device with longitudinally divided seat bottom unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10106791A1 (en) * 2001-02-12 2002-08-14 Sdm Hansen Gmbh St Margrethen Chair has seat which is mounted on three springs arranged in triangle which are connected to support frame, back rest being mounted so that it can rotate about its longitudinal axis

Also Published As

Publication number Publication date
US10499742B2 (en) 2019-12-10
EP3345507A1 (en) 2018-07-11
US20180184809A1 (en) 2018-07-05
EP3345508A1 (en) 2018-07-11
EP3345508B1 (en) 2020-06-17
DE202017102909U1 (en) 2018-04-05

Similar Documents

Publication Publication Date Title
EP1256294B1 (en) Chair, particularly office chair
DE19646470B4 (en) Motor vehicle seat with a backrest and a seat
EP2508102B1 (en) Chair
DE102015101546B4 (en) synchronous mechanism
EP1060694B1 (en) Chair, particularly office-chair
EP1946676A1 (en) Chair
EP0635227A1 (en) Chair, particularly office chair
EP3345507B1 (en) Mechanism for a chair
WO2011141107A1 (en) Adjusting mechanism for adjusting a restoring force that acts on a backrest of a chair, and office chair with such an adjusting mechanism
EP2926690A1 (en) Mechanism for an office chair
EP3120732B1 (en) Mechanism for an office chair
EP1652505B1 (en) Treatment chair, particularly dental treatment chair
WO2016124317A1 (en) Synchronized mechanism
EP3973820A1 (en) Mechanism for a chair
EP1992255A1 (en) Seating
DE102019113582B4 (en) synchronous mechanism
EP3649893B1 (en) Adjusting the pivotal resistance of a component of seating furniture
EP2477523B1 (en) Tilting mechanism for an office chair
EP3437519B1 (en) Rocking mechanism
EP3253255B1 (en) Synchronized mechanism
WO2014183851A1 (en) Synchronizing mechanism
WO2014177445A1 (en) Chair with seat mechanism
DE102019113581A1 (en) Synchronous mechanism
EP3253254B1 (en) Synchronized mechanism
WO2018073222A1 (en) Synchronous chair mechanism and chair having one such

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20181219

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20190301

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20191212

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502018001277

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1262029

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200515

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200429

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200730

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200831

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200829

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200729

REG Reference to a national code

Ref country code: CH

Ref legal event code: PK

Free format text: BERICHTIGUNGEN

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200729

RIN2 Information on inventor provided after grant (corrected)

Inventor name: BOCK, HERMANN

Inventor name: BALLENDAT, MARTIN

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502018001277

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20210201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210104

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20210131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210131

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20180104

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20231128

Year of fee payment: 7

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1262029

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230104

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240111

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20231205

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200429