EP1946676A1 - Chair - Google Patents
Chair Download PDFInfo
- Publication number
- EP1946676A1 EP1946676A1 EP07121220A EP07121220A EP1946676A1 EP 1946676 A1 EP1946676 A1 EP 1946676A1 EP 07121220 A EP07121220 A EP 07121220A EP 07121220 A EP07121220 A EP 07121220A EP 1946676 A1 EP1946676 A1 EP 1946676A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seat
- backrest
- chair according
- seat surface
- 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.)
- Granted
Links
- 210000003127 knee Anatomy 0.000 claims abstract description 6
- 210000001503 joint Anatomy 0.000 claims description 17
- 238000005452 bending Methods 0.000 claims description 3
- 210000004394 hip joint Anatomy 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
- A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
-
- 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
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
- A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable 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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
- A47C1/03238—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
- A47C1/03274—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs of torsion type
-
- 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
- A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
- A47C31/02—Upholstery attaching means
- A47C31/04—Clamps for attaching flat elastic strips or flat meandering springs to frames
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/02—Seat parts
- A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/02—Seat parts
- A47C7/28—Seat parts with tensioned springs, e.g. of flat type
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/38—Support for the head or the back for the head
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
Definitions
- the invention relates to a chair with a seat and a seat mechanism, wherein the seat mechanism allows a lateral pivotal movement of the seat.
- the invention has the object to develop a new movement concept, on the one hand allows a lateral pivoting movement of the seat, but still gives the user in the straight position enough security and stability.
- the chair according to the invention comprises a seat and a seat mechanism, wherein the seat and the seat mechanism are configured such that one side of the seat is movable independently of the other side of the seat during the lateral pivoting movement of the seat, and wherein the seat is around a seat Swivel or rotary axis is pivotally mounted, which is parallel to the knee axis of the user.
- the seat according to the invention should be designed so that the right and left side of the seat are independently movable.
- Such a chair is able to follow the user in his natural three-dimensional movements while still providing sufficient security in the straight posture.
- the seat has a seat surface and a backrest, wherein the backrest and the seat surface are movable relative to one another.
- the seat mechanism has two lateral, independently responding support arms to which the seat is attached.
- the two support arms are preferably pivotally mounted in the region of the knee axis of a user.
- the connection of the seat with the support arms can be done for example by means of ball joints, wherein a first and a second ball joint in the lower region of the backrest of the seat and a third and fourth ball joint in the front region of the seat can be arranged.
- the seat is connected only in the front region of its seat with the seat mechanism.
- two independently sprung bending or pivoting zones can be provided between the backrest and the seat surface.
- the seat is thereby pivotally mounted on a base support and the backrest pivotally supported the seat, wherein between the base support and seat a first spring system and between the seat and backrest a second spring system are provided.
- means for adjusting the spring behavior of both spring systems can be provided in order to adjust the pivoting movement of the seat relative to the base support or the pivoting movement of the backrest with respect to the seat to different requirements, in particular different heavy users.
- the seat mechanism is designed so that it causes a mechanical synchronization of Weg lake- andcommunlehene Trent.
- the seat and backrest are integrally formed, yet the right and left sides of the seat are movable relative to each other.
- the in Fig. 1a to Fig. 1g shown chair according to a first embodiment consists essentially of a seat 1, a seat mechanism 2 and a base support 3.
- the seat in turn has a seat 10 and a backrest 11 which are movable relative to each other.
- the relative mobility can be formed by a suitable pivoting or bending zone, wherein seat 10 and backrest 11 can be formed both in one piece and by separate parts.
- the base support usually has an arbitrarily ausgestaltetes pedestal and is used to hold the seat and the seat mechanism.
- the seat mechanism 2 has in the illustrated embodiment, two lateral, independently reacting support arms 20, 21, on which the seat 1 is attached.
- the two support arms 20, 21 are pivotally mounted about a pivot or rotation axis 22, wherein the pivot or rotation axis 22 is supported on the base support 3 such that the pivot or rotation axis 22 is arranged approximately in the region of the knee axis of a user.
- the seat 1 is mounted in the illustrated embodiment by means of ball joints on the support arms 20, 21.
- the ball joints 23, 24 and 25, 26 are each arranged symmetrically to the median plane 4 of the chair.
- the distance of the first and second ball joint 23, 24 to the hip joint axis of a user is preferably less than 0.2 m. Furthermore, the distance a of the two ball joints between 0.1 m and 0.5 m.
- the displaceability of the third and fourth ball joint 25, 26 is provided, which results when the backrest pivots to the rear or front, as that from which Fig. 1f and Fig. 1g becomes apparent.
- the pivotal movement of the backrest not only causes a displacement of the seat forward, but also causes a pivoting of the backrest 11 to the first and second ball joint 23, 24.
- the backrest 11 and the seat 10 are also coupled to each other such that pivoting the Backrest causes a rearward lifting of the seat relative to the support arms. This lifting of the seat takes place mainly in the rear part of the seat, which is caused by the simultaneous lowering of the support arms a total of movement of the rear part of the seat 10 down.
- the pivotal movement of the backrest 11 to the rear is thus realized substantially by the pivotal movement of the support arms 10, 21 about the pivot axis or rotation 22.
- the displaceability of the ball joints 25, 26 also allows for leaning back an increase in the angle between the seat 10 and backrest 11th
- the ball joints 25 and 26 are arranged at a distance A from the pivot or rotation axis 22.
- the seat 10 is slidably supported with respect to the ball joints 25, 26 from the rear or in, with a rearward displacement without resistance possible while forward displacement is limited by a boundary 40.
- the boundary 40 may be formed by a fixed or a pressure-resilient stop.
- FIG. 1i shows that an overall inclination or lurching of the seat is possible without resistance, without causing a rotation of the backrest to the ball joints 23, 24 must come.
- the angle ⁇ 1 between the seat 10 and the backrest 11 can thus be kept constant during this rocking movement.
- a rotation of the backrest 11 is always connected to a displacement of the seat with respect to the ball joints 25 and 26. How out FIG. 1h is clearly visible, the ball joints 25 and 26 in contact with the boundary 40, so that a sole rotation of the backrest about the joints 23, 24 from this position is not possible. It is therefore necessary that the seat in turn is pressed by the pressure of the boundary 40 against the ball joints 25, 26 in a downward slope.
- this second embodiment of the invention is capable of responding to lateral weight shifts by one-sided seat tilt without the user losing seat back contact.
- the two support arms 20, 21 are via suitable spring elements in the normal position, ie in the upright position, according to Fig. 1f pressed.
- the spring elements are individually adjustable by the user in the usual form, thereby changing the pivoting behavior.
- the two support arms can both together, ie synchronously pivot without pivot or rotation axis 22 and independently about the pivot or rotation axis 22.
- This independent pivoting allows lateral pivoting of the seat, as in Fig. 1e relative to the straight position according to Fig. 1d is shown.
- the independently responding support arms 20, 21 and the seat itself is designed such that one side, ie the left or right side of the seat in the lateral pivoting movement is independent of the other side of the seat movable. In other words, not the entire seat is tilted sideways, but it comes in particular to an independent movement of the right and left half of the seat, in particular the seat.
- the pivot or rotation axis 22 is rigid and also the articulation on the seat allows only about a horizontal displacement of the seat, but no lowering of the seat in its front area. With a lateral pivoting of the seat, as in Fig. 1e is shown, it thus comes to a twisting of the seat, in particular the seat. Of course, can be superimposed in this movement additionally also pivoting and or twisting of the backrest.
- the seat 2 is connected here only in the front region of its seat 10 with the seat mechanism, the seat 10 pivotally mounted on the base support 3 and the backrest are pivotally supported on the seat 10.
- the seat mechanism is formed here essentially by two spring systems, wherein between the base support 3 and seat 10, a first spring system 27 and between seat 10 and backrest 11, a second spring system 28 are provided. Further refinements of this seat mechanism are from the DE-A-10 2006 023 982 taken from the same applicant.
- the chair in both pivoting ranges can be tailored to a variety of requirements. By eliminating the mechanical coupling of the two joints less space is required for the chair mechanism and opens up new possibilities in chair design.
- both spring systems 27, 28 are provided to the pivotal movement of the seat 10 with respect to the base support 3 and the pivoting movement of the backrest 11 with respect to the seat 10 to different requirements, especially different heavy users to adapt can.
- means are also conceivable which adjust both spring systems 27, 28 together, as is the case in particular in US Pat DE-A-10 2006 023 962 is described in more detail. In this way it can be ensured that even for differently heavy users substantially the same synchronous ratio between seat tilt and backrest tilt is made possible.
- the pivotal movement of the seat 10 about the base support 3 is about a first hinge axis 29 and the pivotal movement of the backrest 11 about the seat 10 is made possible by a second hinge axis 30. Due to the lack of mechanical coupling of seat and backrest, it is possible to make the distance between the two hinge axes 29, 30 adjustable and thereby achieve a seat depth adjustment.
- the Seat depth S 1 ie the distance between the two hinge axis 29, 30
- the seat depth has been reduced to S 2 .
- the lateral pivoting mobility of the seat is also realized in this embodiment.
- two lateral support arms 39a, 39b are provided, which are independent of each other via two independent spring elements 27a, 27b pivotally.
- the spring system 28 is also equipped with two lateral, independently reacting spring elements 28a, 28b. In this way, in turn, a side of the seat in the lateral pivotal movement of the seat can move independently of the other side of the seat, as that from the Fig. 2d and Fig. 2e becomes apparent.
- the seat 10 and preferably also the backrest 11 are formed so that it can come in the lateral pivoting movement to a twisting of the seat and backrest.
- a fourth embodiment of a chair is characterized by a seat mechanism, which causes a mechanical synchronization of Weg lake- andmajlehene Trent.
- the seat 10 is in turn supported pivotally in its front region via a hinge axis 31 on the base support 3.
- the backrest 11 is articulated laterally on the seat surface 10 via two lateral coupling arms 34a, 34b via joints 35a, 35b.
- An extension of the coupling arms 34a, 34b is also coupled by means of joints 36a, 36b on the base support 3.
- This synchronous mechanism is tuned so that a suitable synchronous ratio, for example in the range of 1 to 1.5 to 1 to 3.5, results.
- the synchronous ratio results from the ratio of the angle by which the seat surface 10 is inclined with respect to the base support 3 and the angle at which the seat back 11 inclines with respect to its upright position.
- the synchronizing mechanism can also be designed in any other way as long as it causes a mechanical synchronization of seat and backrest slope.
- two lateral support arms 32, 33 are provided, which are mounted independently of each other pivotably about the hinge axis 31 and are connected in a suitable manner with the seat.
- the independent pivoting mobility of these two support arms in turn allows one side of the seat is movable in a lateral pivotal movement of the seat independently of the other side of the seat. Since in this case the front end of the seat does not execute a lateral inclination, as in the other exemplary embodiments, the seat 10 is warped and, via the coupling arms 34a, 34b, also a corresponding distortion of the backrest 11.
- Fig. 4a to Fig. 4g shown fifth embodiment differs from the third embodiment essentially only in that there provided the second spring system 28 is omitted.
- Seat 10 and backrest 11 are integrally formed, wherein a transition region between the seat 10 and the backrest 11 allows a relative mobility of the seat and backrest.
- the lateral pivoting mobility of the seat is again achieved by the fact that the seat 10 is articulated and cushioned in its front region by two lateral, independently reacting spring elements 37a, 37b.
- the connection between the seat surface 10 and the base support 3 can, as in the previous embodiments, take place by means of lateral support arms 38a, 38b, which are movable independently of each other by the two spring elements 37a, 37b.
- the integrally formed seat shell, consisting of seat 10 and backrest 11, is suitably made of plastic and can be for the realization of the lateral pivoting of the seat (see Fig. 4e ) use accordingly.
- the seat 10 is pivotable at its front end about a hinge axis, wherein in the region of this hinge axis 2 separate spring elements are provided which allow independent pivoting of the left and right side of the seat about the front hinge axis.
- the seat is preferably attached to two lateral support arms that react independently of each other about the front hinge axis.
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- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Chairs Characterized By Structure (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Paper (AREA)
- Vehicle Body Suspensions (AREA)
- Hydraulic Control Valves For Brake Systems (AREA)
- Seats For Vehicles (AREA)
- Harvester Elements (AREA)
Abstract
Description
Die Erfindung betrifft einen Stuhl mit einem Sitz und einer Sitzmechanik, wobei die Sitzmechanik eine seitliche Schwenkbewegung des Sitzes erlaubt.The invention relates to a chair with a seat and a seat mechanism, wherein the seat mechanism allows a lateral pivotal movement of the seat.
Aus der Praxis sind Konzepte bekannt, die eine allseitige Schwenkbarkeit des Sitzes erlauben. Hierbei liegt das Schwenkgelenk zentral nahe der vertikale Mittelachse durch die Sitzfläche (siehe beispielsweise
Aus der
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde ein neues Bewegungskonzept zu entwickeln, das einerseits eine seitliche Schwenkbewegung des Sitzes erlaubt, aber dennoch dem Benutzer auch in der geraden Stellung genügend Sicherheit und Stabilität vermittelt.Based on this state of the art, the invention has the object to develop a new movement concept, on the one hand allows a lateral pivoting movement of the seat, but still gives the user in the straight position enough security and stability.
Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Anspruches 1 gelöst.According to the invention, this object is solved by the features of
Der erfindungsgemäße Stuhl weist insbesondere einen Sitz und eine Sitzmechanik auf, wobei der Sitz und die Sitzmechanik derart ausgebildet sind, dass die eine Seite des Sitzes bei der seitlichen Schwenkbewegung des Sitzes unabhängig von der anderen Seite des Sitzes bewegbar ist, und wobei der Sitz um eine Schwenk- bzw. Drehachse schwenkbar gelagert ist, die parallel zur Knieachse des Benutzers liegt.In particular, the chair according to the invention comprises a seat and a seat mechanism, wherein the seat and the seat mechanism are configured such that one side of the seat is movable independently of the other side of the seat during the lateral pivoting movement of the seat, and wherein the seat is around a seat Swivel or rotary axis is pivotally mounted, which is parallel to the knee axis of the user.
Im Gegensatz zu den bisher verfolgten Konzepten, bei welchen der gesamte Sitz und insbesondere die gesamte Sitzfläche als starres Element nach rechts oder links kippen, soll der erfindungsgemäße Sitz so ausgebildet sein, dass die rechte und linke Seite des Sitzes unabhängig voneinander bewegbar sind. Ein derartiger Stuhl ist in der Lage dem Benutzer bei seinen natürlichen dreidimensionalen Bewegungen zu folgen und dabei dennoch in der geraden Haltung genügend Sicherheit zu bieten.In contrast to the previously pursued concepts, in which tilt the entire seat and in particular the entire seat as a rigid element to the right or left, the seat according to the invention should be designed so that the right and left side of the seat are independently movable. Such a chair is able to follow the user in his natural three-dimensional movements while still providing sufficient security in the straight posture.
Weitere Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Further embodiments of the invention are the subject of the dependent claims.
Gemäß einer bevorzugten Ausführungsform weist der Sitz eine Sitzfläche und eine Rückenlehne auf, wobei Rückenlehne und Sitzfläche relativ zueinander beweglich sind.According to a preferred embodiment, the seat has a seat surface and a backrest, wherein the backrest and the seat surface are movable relative to one another.
Gemäß einem ersten Ausführungsbeispiel weist die Sitzmechanik zwei seitliche, unabhängig voneinander reagierende Tragarme auf, an welchen der Sitz befestigt ist. Die beiden Tragarme sind dabei vorzugsweise im Bereich der Knieachse eines Benutzers schwenkbar gelagert. Die Verbindung des Sitzes mit dem Tragarmen kann beispielsweise mittels Kugelgelenken erfolgen, wobei ein erstes und ein zweites Kugelgelenk im unteren Bereich der Rückenlehne des Sitzes und ein drittes und viertes Kugelgelenk im vorderen Bereich der Sitzfläche angeordnet sein können.According to a first embodiment, the seat mechanism has two lateral, independently responding support arms to which the seat is attached. The two support arms are preferably pivotally mounted in the region of the knee axis of a user. The connection of the seat with the support arms can be done for example by means of ball joints, wherein a first and a second ball joint in the lower region of the backrest of the seat and a third and fourth ball joint in the front region of the seat can be arranged.
Gemäß einer zweiten Ausgestaltung der Erfindung ist der Sitz lediglich im vorderen Bereich seiner Sitzfläche mit der Sitzmechanik verbunden. Dabei können insbesondere für die Relativbewegung von Rückenlehne und Sitzfläche zwei unabhängig voneinander abgefederte Biege- oder Schwenkzonen zwischen Rückenlehne und Sitzfläche vorgesehen werden. Gemäß einer bevorzugten Ausgestaltung der Erfindung ist die Sitzfläche dabei schwenkbeweglich an einem Basisträger und die Rückenlehne schwenkbeweglich der Sitzfläche gehaltert, wobei zwischen Basisträger und Sitzfläche ein erstes Federsystem und zwischen Sitzfläche und Rückenlehne ein zweites Federsystem vorgesehen sind.According to a second embodiment of the invention, the seat is connected only in the front region of its seat with the seat mechanism. In this case, in particular for the relative movement of the backrest and the seat surface, two independently sprung bending or pivoting zones can be provided between the backrest and the seat surface. According to a preferred embodiment of the invention, the seat is thereby pivotally mounted on a base support and the backrest pivotally supported the seat, wherein between the base support and seat a first spring system and between the seat and backrest a second spring system are provided.
Als weitere Ausgestaltung können dabei Mittel zur Verstellung des Federverhaltens beide Federsysteme vorgesehen werden, um die Schwenkbeweglichkeit der Sitzfläche bezüglich dem Basisträger bzw. die Schwenkbeweglichkeit der Rückenlehne bezüglich der Sitzfläche an unterschiedlicher Anforderungen, insbesondere unterschiedlich schwere Benutzer anpassen zu können.As a further embodiment, means for adjusting the spring behavior of both spring systems can be provided in order to adjust the pivoting movement of the seat relative to the base support or the pivoting movement of the backrest with respect to the seat to different requirements, in particular different heavy users.
Gemäß einem dritten und vierten Ausführungsbeispiel der Erfindung ist die Sitzmechanik so ausgebildet, dass sie eine mechanische Synchronisierung von Sitzflächen- und Rückenlehneneigung bewirkt.According to a third and fourth embodiment of the invention, the seat mechanism is designed so that it causes a mechanical synchronization of Sitzflächen- and Rückenlehneneigung.
Im einem fünften Ausführungsbeispiel der Erfindung sind Sitzfläche und Rückenlehne einstückig ausgebildet, wobei dennoch die rechte und linke Seite des Sitzes relativ zueinander bewegbar sind.In a fifth embodiment of the invention, the seat and backrest are integrally formed, yet the right and left sides of the seat are movable relative to each other.
Weitere Vorteile und Ausgestaltung der Erfindung werden im Folgenden anhand der Beschreibung einiger Ausführungsbeispiele und der Zeichnung näher erläutert.Further advantages and embodiment of the invention are explained in more detail below with reference to the description of some embodiments and the drawings.
In der Zeichnung zeigen
- Fig. 1a - Fig. 1c
- verschiedene Ansichten (Draufsicht, Rückansicht, Seitenansicht) eines Stuhls gemäß einem ersten Ausführungsbeispiel,
- Fig. 1d und Fig. 1 e
- Rückansichten des Stuhles in der aufrechten bzw. seitlich geneigten Stellung,
- Fig. 1f und Fig. 1g
- Seitenansichten des Stuhles in der Normalposition bzw. in der zurückgeneigten Stellung,
- Fig. 1h bis Fig. 1j
- Seitenansichten des Stuhles in unterschiedlich geneigten Positionen mit Mitteln gemäß einem zweiten Ausführungsbeispiel,
- Fig. 2a - Fig. 2c
- verschiedene Ansichten (Draufsicht, Rückansicht, Seitenansicht) eines Stuhls gemäß einem dritten Ausführungsbeispiel,
- Fig. 2d und Fig. 2e
- Rückansichten des Stuhles in der aufrechten bzw. seitlich geneigten Stellung,
- Fig. 2f und Fig. 2g
- Seitenansichten des Stuhles in der Normalposition bzw. in der zurückgeneigten Stellung.
- Fig. 2h und Fig. 2i
- Seitenansichten des Stuhles in der Normalposition bzw. in der zurückgeneigten Stellung, wobei der Abstand der beiden Gelenkachsen gegenüber der Darstellung in den
Fig. 2f und Fig. 2g verkürzt ist, - Fig. 3a - Fig. 3c
- verschiedene Ansichten (Draufsicht, Rückansicht, Seitenansicht) eines Stuhls gemäß einem vierten Ausführungsbeispiel,
- Fig. 3d und Fig. 3e
- Rückansichten des Stuhles in der aufrechten bzw. seitlich geneigten Stellung,
- Fig. 3f und Fig. 3g
- Seitenansichten des Stuhles in der Normalposition bzw. in der zurückgeneigten Stellung.
- Fig. 4a - Fig. 4c
- verschiedene Ansichten (Draufsicht, Rückansicht, Seitenansicht) eines Stuhls gemäß einem fünften Ausführungsbeispiel,
- Fig. 4d und Fig. 4e
- Rückansichten des Stuhles in der aufrechten bzw. seitlich geneigten Stellung.
- Fig. 4f und Fig. 4g
- Seitenansichten des Stuhles in der Normalposition bzw. in der zurückgeneigten Stellung.
- Fig. 1a - Fig. 1c
- various views (top view, rear view, side view) of a chair according to a first embodiment,
- Fig. 1d and Fig. 1 e
- Rear views of the chair in the upright or laterally inclined position,
- Fig. 1f and Fig. 1g
- Side views of the chair in the normal position or in the reclined position,
- Fig. 1h to Fig. 1j
- Side views of the chair in different inclined positions with means according to a second embodiment,
- Fig. 2a - Fig. 2c
- various views (top view, rear view, side view) of a chair according to a third embodiment,
- Fig. 2d and Fig. 2e
- Rear views of the chair in the upright or laterally inclined position,
- Fig. 2f and Fig. 2g
- Side views of the chair in the normal position or in the reclined position.
- Fig. 2h and Fig. 2i
- Side views of the chair in the normal position or in the reclined position, wherein the distance between the two hinge axes relative to the representation in the
Fig. 2f and Fig. 2g is shortened, - Fig. 3a - Fig. 3c
- various views (top view, rear view, side view) of a chair according to a fourth embodiment,
- Fig. 3d and Fig. 3e
- Rear views of the chair in the upright or laterally inclined position,
- Fig. 3f and Fig. 3g
- Side views of the chair in the normal position or in the reclined position.
- Fig. 4a - Fig. 4c
- various views (top view, rear view, side view) of a chair according to a fifth embodiment,
- Fig. 4d and Fig. 4e
- Rear views of the chair in the upright or laterally inclined position.
- Fig. 4f and Fig. 4g
- Side views of the chair in the normal position or in the reclined position.
Der in
Der Basisträger weist in üblicherweise ein beliebig ausgestaltetes Fußgestell auf und dient zur Halterung des Sitzes sowie der Sitzmechanik.The base support usually has an arbitrarily ausgestaltetes pedestal and is used to hold the seat and the seat mechanism.
Die Sitzmechanik 2 weist im dargestellten Ausführungsbeispiel zwei seitliche, unabhängig voneinander reagierende Tragarme 20, 21 auf, an denen der Sitz 1 befestigt ist. Die beiden Tragarme 20, 21 sind um eine Schwenk- oder Drehachse 22 schwenkbar gelagert, wobei die Schwenk- bzw. Drehachse 22 derart am Basisträger 3 gehaltert ist, dass die Schwenk- oder Drehachse 22 etwa im Bereich der Knieachse eines Benutzers angeordnet ist.The
Der Sitz 1 ist im dargestellten Ausführungsbeispiel mittels Kugelgelenken an den Tragarmen 20, 21 gelagert. Dabei ist ein erstes und ein zweites Kugelgelenk 23, 24 im unteren Bereich der Rückenlehne 11 und ein drittes und viertes Kugelgelenk 25, 26 im vorderen Bereich der Sitzfläche 10 angeordnet. Die Kugelgelenke 23, 24 bzw. 25, 26 sind jeweils symmetrische zur Mittelebene 4 des Stuhles angeordnet. Der Abstand des ersten und zweiten Kugelgelenks 23, 24 zur Hüftgelenkachse eines Benutzers beträgt vorzugsweise weniger als 0,2 m. Weiterhin beträgt der Abstand a der beiden Kugelgelenke zwischen 0,1 m und 0,5 m.The
Weiterhin ist die Sitzfläche 10 im Bereich des dritten und vierten Kugelgelenks 25, 26 und/oder die Rückenlehne 11 im Bereich des ersten und zweiten Kugelgelenks 23, 24 relativ zu den Tragarmen 20, 21 verschiebbar gehaltert. Im konkreten Ausführungsbeispiel ist die Verschiebbarkeit des dritten und vierten Kugelgelenks 25, 26 vorgesehen, welche sich dann ergibt, wenn die Rückenlehne nach hinten bzw. vorne schwenkt, wie das aus denen
Die Schwenkbewegung der Rückenlehne 11 nach hinten wird somit im Wesentlichen durch die Schwenkbewegung der Tragarme 10, 21 um die Schwenk- oder Drehachse 22 realisiert. Die Verschiebbarkeit der Kugelgelenke 25, 26 ermöglicht zudem beim Zurücklehnen eine Vergrößerung des Winkels zwischen Sitzfläche 10 und Rückenlehne 11.The pivotal movement of the
Gemäß einem zweiten Ausführungsbeispiel sind die Kugelgelenke 25 und 26 in einem Abstand A von der Schwenk- bzw. Drehachse 22 angeordnet. Die Sitzfläche 10 ist bezüglich der Kugelgelenke 25, 26 nach vom bzw. hinten in verschiebbar gehaltert, wobei eine nach hinten gerichtete Verschiebung widerstandslos möglich ist, während eine nach vorne gerichtete Verschiebung durch eine Begrenzung 40 begrenzt wird. Die Begrenzung 40 kann durch einem festen oder einen unter Druck nachgiebigen Anschlag gebildet werden.According to a second embodiment, the ball joints 25 and 26 are arranged at a distance A from the pivot or
Die
Eine Drehung der Rückenlehne 11 ist immer auch mit einer Verschiebung der Sitzfläche bezüglich der Kugelgelenke 25 und 26 verbunden. Wie aus
Aus dieser Konstellation ergibt sich eine mechanische Synchronisierung von Sitzflächenneigung und Rückenlehnenneigung (β1-β2/α2-α1), die nur in eine Richtung wirksam ist. Für den Benutzer ergibt sich der Vorteil, dass er durch das freie Wippen beim Niederlassen auf den Stuhl angenehm einfedert, ohne den Rückenlehnenkontakt zu verlieren, und dass ihm dennoch beim Zurücklehnen eine mechanische Synchronisierung mit harmonischem und definierten Verlauf von Sitzflächenneigung und Rückenlehnenneigung zur Verfügung steht.From this constellation results in a mechanical synchronization of seat tilt and backrest tilt (β1-β2 / α2-α1), which is effective only in one direction. For the user, there is the advantage that it springs in by the free rockers when settling on the chair comfortable without losing the backrest contact, and that it is still a mechanical synchronization with harmonious and defined course of seat tilt and backrest inclination available when leaning back.
Im Zusammenhang mit dem Merkmal der unabhängigen Bewegung von rechter und linker Sitzseite ist diese zweite Ausführungsform der Erfindung in der Lage, auf seitliche Gewichtsverlagerungen durch einseitige Sitzflächenneigung zu reagieren, ohne, dass der Benutzer den Rückenlehnenkontakt verliert.In the context of the independent right and left seat side feature, this second embodiment of the invention is capable of responding to lateral weight shifts by one-sided seat tilt without the user losing seat back contact.
Die beiden Tragarme 20, 21 werden über geeignete Federelemente in die Normalposition, d.h. in die aufrechte Position, gemäß
Die beiden Tragarme können sowohl gemeinsam, d.h. synchron ohne Schwenk- bzw. Drehachse 22 als auch unabhängig voneinander um die Schwenk bzw. Drehachse 22 schwenken. Diese unabhängige Schwenkbarkeit ermöglicht eine seitliche Schwenkbarkeit des Sitzes, wie dies in
Anhand der
Zum leichteren Verständnis werden für gleiche Bauteile die selben Bezugszeichen wie beim ersten Ausführungsbeispiel verwendet.For ease of understanding, the same reference numerals are used for the same components as in the first embodiment.
Der Sitz 2 ist hier lediglich im vorderen Bereich seiner Sitzfläche 10 mit der Sitzmechanik verbunden, wobei die Sitzfläche 10 schwenkbeweglich am Basisträger 3 und die Rückenlehne schwenkbeweglich an der Sitzfläche 10 gehaltert sind. Die Sitzmechanik wird hier im Wesentlichen durch zwei Federsysteme gebildet, wobei zwischen Basisträger 3 und Sitzfläche 10 ein erstes Federsystem 27 und zwischen Sitzfläche 10 und Rückenlehne 11 ein zweites Federsystem 28 vorgesehen sind. Nähere Ausgestaltungen dieser Sitzmechanik sind aus der
Indem die Schwenkbewegung der Rückenlehne 11 bezüglich der Sitzfläche 10 mechanisch nicht mit der Schwenkbewegung der Sitzfläche 10 bezüglich des Basisträgers gekoppelt ist, kann der Stuhl in beiden Schwenkbereichen individuell auf die unterschiedlichsten Anforderungen abgestimmt werden. Durch den Wegfall der mechanischen Kopplung der beiden Gelenke wird für die Stuhlmechanik weniger Bauraum benötigt und eröffnet neue Möglichkeiten beim Stuhldesign.By the pivotal movement of the
Weiterhin können nicht näher dargestellte Mittel zur Verstellung des Federverhaltens beide Federsysteme 27, 28 vorgesehen werden, um die Schwenkbeweglichkeit der Sitzfläche 10 bezüglich dem Basisträger 3 bzw. die Schwenkbeweglichkeit der Rückenlehne 11 bezüglich der Sitzfläche 10 an unterschiedlicher Anforderungen, insbesondere unterschiedlich schwere Benutzer, anpassen zu können. Dabei sind insbesondere auch Mittel denkbar, die beide Federsysteme 27, 28 gemeinsam verstellen, wie das insbesondere in der
Die Schwenkbewegung der Sitzfläche 10 um den Basisträger 3 erfolgt um eine erste Gelenkachse 29 und die Schwenkbewegung der Rückenlehne 11 um die Sitzfläche 10 wird durch eine zweite Gelenkachse 30 ermöglicht. Durch die fehlende mechanische Kopplung von Sitzfläche und Rückenlehne besteht die Möglichkeit, den Abstand zwischen den beiden Gelenkachsen 29, 30 einstellbar zu gestalten und dadurch eine Sitztiefenverstellung zu erreichen. In den
Darüber hinaus ist aber auch bei diesem Ausführungsbeispiel die seitliche Schwenkbeweglichkeit des Sitzes realisiert. Zu diesem Zweck sind wiederum zwei seitliche Tragarme 39a, 39b vorgesehen, die unabhängig von einander über zwei unabhängige Federelemente 27a, 27b schwenkbar sind. Auch das Federsystem 28 ist mit zwei seitlichen, unabhängig voneinander reagierenden Federelementen 28a, 28b ausgestattet. Auf diese Weise kann sich wiederum eine Seite des Sitzes bei der seitlichen Schwenkbewegung des Sitzes unabhängig von der anderen Seite des Sitzes bewegen, wie das aus den
Außerdem sind die Sitzfläche 10 und vorzugsweise auch die Rückenlehne 11 so ausgebildet, dass es bei der seitlichen Schwenkbewegung zur einer Verwindung von Sitzfläche und Rückenlehne kommen kann.In addition, the
Anhand der
Diese Synchronmechanik ist so abgestimmt, dass sich ein geeignetes Synchronverhältnis, beispielsweise im Bereich von 1 zu 1,5 bis 1 zu 3,5, ergibt. Das Synchronverhältnis ergibt sich dabei aus dem Verhältnis des Winkels, um den sich die Sitzfläche 10 bezüglich des Basisträgers 3 neigt und dem Winkel, mit dem sich die Rückenlehne 11 bezüglich ihrer aufrechten Stellung neigt. Grundsätzlich kann die Synchronmechanik auch in jeder anderen Art und Weise ausgebildet sein, solange sie eine mechanische Synchronisierung von Sitzflächen- und Rückenlehneneigung bewirkt.This synchronous mechanism is tuned so that a suitable synchronous ratio, for example in the range of 1 to 1.5 to 1 to 3.5, results. The synchronous ratio results from the ratio of the angle by which the
Zur Befestigung der Sitzfläche 10 an der Gelenkachse 31 sind wiederum zwei seitliche Tragarme 32, 33 vorgesehen, die unabhängig voneinander um die Gelenkachse 31 schwenkbeweglich gelagert sind und in geeigneter Weise mit der Sitzfläche verbunden sind. Die unabhängige Schwenkbeweglichkeit dieser beiden Tragarme ermöglicht wiederum, dass eine Seite des Sitzes bei einer seitlichen Schwenkbewegung des Sitzes unabhängig von der anderen Seite des Sitzes bewegbar ist. Da sich dabei das vordere Ende des Sitzes keine seitliche Neigung ausführt, kommt es wie schon bei den anderen Ausführungsbeispielen zu einer Verwindung der Sitzfläche 10 und über die Kopplungsarme 34a, 34b auch zu einer entsprechenden Verwindung der Rückenlehne 11.For attachment of the
Das in den
Sitzfläche 10 und Rückenlehne 11 sind einstückig ausgebildet, wobei ein Übergangsbereich zwischen Sitzfläche 10 und Rückenlehne 11 eine relative Beweglichkeit von Sitzfläche und Rückenlehne ermöglicht.
Die seitliche Schwenkbeweglichkeit des Sitzes wird wiederum dadurch erreicht, dass der Sitz 10 in seinem vorderen Bereich durch zwei seitliche, unabhängig voneinander reagierende Federelemente 37a, 37b angelenkt und abgefedert ist. Die Verbindung zwischen Sitzfläche 10 und Basisträger 3 kann dabei wie auch schon bei den vorhergehenden Ausführungsbeispielen mittels seitlichen Tragarmen 38a, 38b erfolgen, die durch die beiden Federelementen 37a, 37 unabhängig voneinander beweglich sind. Die einstückig ausgebildete Sitzschale, bestehend aus Sitzfläche 10 und Rückenlehne 11, wird zweckmäßigerweise aus Kunststoff gefertigt und lässt sich zur Realisierung der seitlichen Schwenkbarkeit des Sitzes (siehe
Bei allen Ausführungsbeispielen ist die Sitzfläche 10 an ihrem vorderen Ende um eine Gelenkachse schwenkbar, wobei im Bereich dieser Gelenkachse 2 separate Federelemente vorgesehen sind, die ein unabhängiges Schwenken der linken und rechten Seite des Sitzes um die vordere Gelenkachse ermöglichen. Der Sitz ist vorzugsweise an zwei seitlichen, um die vordere Gelenkachse unabhängig voneinander reagierenden Tragarmen befestigt.In all embodiments, the
Claims (16)
dadurch gekennzeichnet, das die Sitzmechanik derart ausgebildet ist, dass der Sitz um eine Drehachse (22) schwenkbar gelagert ist, die parallel zur Knieachse des Benutzers liegt.Chair having a seat (1) and a seat mechanism (2), the seat mechanism allowing a lateral pivotal movement of the seat, wherein the seat (1) and the seat mechanism (2) are formed such that the one side of the seat in the lateral pivoting movement the seat is movable independently of the other side of the seat,
characterized in that the seat mechanism is formed such that the seat is pivotally mounted about an axis of rotation (22) which is parallel to the knee axis of the user.
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EP04253350.5A Expired - Lifetime EP1483986B1 (en) | 2002-09-12 | 2004-06-04 | Combined tension and back stop function for seating unit |
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EP20040754388 Withdrawn EP1628554A2 (en) | 2002-09-12 | 2004-06-04 | Seating with comfort surface |
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EP20100075631 Expired - Lifetime EP2314179B1 (en) | 2002-09-12 | 2004-06-04 | Combined tension and back stop function for seating unit |
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- 2003-06-05 US US10/455,487 patent/US7226130B2/en not_active Expired - Lifetime
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- 2003-09-08 CN CN201110341134.6A patent/CN102669972B/en not_active Expired - Lifetime
- 2003-09-08 MX MXPA05002605A patent/MXPA05002605A/en active IP Right Grant
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- 2004-06-04 EP EP20100075629 patent/EP2305071A3/en not_active Withdrawn
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- 2004-06-04 JP JP2006515203A patent/JP2006526484A/en active Pending
- 2004-06-04 EP EP20100075631 patent/EP2314179B1/en not_active Expired - Lifetime
- 2004-06-04 WO PCT/US2004/017777 patent/WO2004107915A2/en active Search and Examination
- 2004-06-04 AU AU2004245072A patent/AU2004245072B2/en not_active Ceased
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- 2006-03-21 US US11/385,565 patent/US7264311B2/en not_active Expired - Lifetime
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- 2007-01-16 DE DE102007002284A patent/DE102007002284A1/en not_active Withdrawn
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US10383446B2 (en) | 2010-06-15 | 2019-08-20 | Herman Miller, Inc. | Chair |
DE102011105290A1 (en) | 2010-06-15 | 2011-12-15 | Claudia Plikat | "Chair" |
WO2011157392A1 (en) | 2010-06-15 | 2011-12-22 | Claudia Plikat | Chair |
US9510684B2 (en) | 2010-06-15 | 2016-12-06 | Johann Burkhard Schmitz | Chair |
DE202010008739U1 (en) | 2010-10-06 | 2011-11-10 | Wilkhahn Wilkening + Hahne Gmbh + Co. Kg | seat |
EP2508102A1 (en) * | 2011-04-05 | 2012-10-10 | Wilkhahn Wilkening + Hahne GmbH + Co. KG | Chair |
EP2520199A1 (en) | 2011-05-04 | 2012-11-07 | Eckhard Hansen | Seating |
DE202012012606U1 (en) | 2011-05-04 | 2013-06-12 | Eckhard Hansen | seating |
US9486081B2 (en) | 2011-05-06 | 2016-11-08 | Haworth, Inc. | Item of seating furniture, in particular office chair |
CN103889273A (en) * | 2011-06-08 | 2014-06-25 | 霍沃思公司 | Seat, in particular an office chair |
US10638841B2 (en) | 2011-06-08 | 2020-05-05 | Haworth, Inc. | Seat, in particular an office chair |
US11076696B2 (en) | 2011-06-08 | 2021-08-03 | Haworth, Inc. | Seat, in particular an office chair |
US10111525B2 (en) | 2011-06-08 | 2018-10-30 | Haworth, Inc. | Seat, in particular an office chair |
US9504325B2 (en) | 2011-06-08 | 2016-11-29 | Haworth, Inc. | Seat, in particular an office chair |
WO2012167940A1 (en) * | 2011-06-08 | 2012-12-13 | Haworth, Inc. | Seat, in particular an office chair |
US9826836B2 (en) | 2011-06-08 | 2017-11-28 | Haworth, Inc. | Seat, in particular an office chair |
CN103889273B (en) * | 2011-06-08 | 2018-01-09 | 霍沃思公司 | Seat, especially office chair |
US9211014B2 (en) | 2011-12-08 | 2015-12-15 | Herman Miller, Inc. | Composite body support member and methods for the manufacture and recycling thereof |
WO2014059553A1 (en) | 2012-10-18 | 2014-04-24 | Vitra Patente Ag | Seat with relative synchronous displacement between back incline and seat incline |
EP2908696B1 (en) | 2012-10-18 | 2017-12-06 | Vitra Patente AG | Synchronous seat adjustment |
US9913539B2 (en) | 2013-03-15 | 2018-03-13 | Haworth, Inc. | Office chair |
USD723851S1 (en) | 2013-06-07 | 2015-03-10 | Herman Miller, Inc. | Backrest support |
USD703457S1 (en) | 2013-06-07 | 2014-04-29 | Herman Miller, Inc. | Chair |
EP2962602A1 (en) * | 2014-03-19 | 2016-01-06 | Wilkhahn Wilkening + Hahne GmbH + Co. KG | Chair |
EP2921080A1 (en) * | 2014-03-19 | 2015-09-23 | Wilkhahn Wilkening + Hahne GmbH + Co. KG | Chair |
US10182657B2 (en) | 2016-02-12 | 2019-01-22 | Haworth, Inc. | Back support for a chair |
US10729250B2 (en) | 2016-02-12 | 2020-08-04 | Haworth, Inc. | Back support for a chair |
US11805914B2 (en) | 2016-02-12 | 2023-11-07 | Haworth, Inc. | Back support for a chair |
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