EP0049310B1 - Working chair - Google Patents
Working chair Download PDFInfo
- Publication number
- EP0049310B1 EP0049310B1 EP80108111A EP80108111A EP0049310B1 EP 0049310 B1 EP0049310 B1 EP 0049310B1 EP 80108111 A EP80108111 A EP 80108111A EP 80108111 A EP80108111 A EP 80108111A EP 0049310 B1 EP0049310 B1 EP 0049310B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seat
- article
- furniture according
- articulation
- sitting furniture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000001154 acute effect Effects 0.000 claims 1
- 229920003002 synthetic resin Polymers 0.000 claims 1
- 239000000057 synthetic resin Substances 0.000 claims 1
- 230000007704 transition Effects 0.000 description 5
- 210000004197 pelvis Anatomy 0.000 description 4
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 102000004315 Forkhead Transcription Factors Human genes 0.000 description 1
- 108090000852 Forkhead Transcription Factors Proteins 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
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
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
-
- 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
- A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
-
- 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
-
- 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
- A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
-
- 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
- A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
- A47C1/03279—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs of torsion type
Definitions
- the invention relates to a piece of work seating, with a backrest hingedly connected to a seat and with a base frame, on which the seat is supported in its front region via a joint and the backrest is supported by a lumbar support arm, the support lever being approximately below the
- the center of the seat is articulated on the underframe and, in the basic position, the seat is oriented essentially horizontally and the backrest is oriented vertically on the middle and is returned to the basic position by a return spring force.
- the seating furniture in which the seat inclination and the back inclination can be changed in a certain ratio to one another are known in various embodiments.
- the seating furniture In the unloaded state, the seating furniture, when the seat is generally horizontal, has an angle of 90 ° between the seat and the backrest, which is maintained as long as the user in the working position essentially only loads the seat surface. If the user wants to lean back into a rest position, the known seat furniture tilts - generally only after releasing a lock - the seat surface slightly downwards by a small angle at the rear end and swivels the backrest by a two to three times larger Angle backwards, with angles of up to 130 ° C between the seat and back surface for the rest position.
- Such seating furniture with so-called “synchronous" seat and back adjustment already provides an ergonomically quite favorable adaptation of the seating furniture support surfaces to the respective posture of the user, but this applies only to a limited extent in the area of the lower lumbar vertebrae if, for example, the arrangement according to DE -OS 2 332 596 links the rear seat edge directly or via low pedestals to the adjacent backrest. It has therefore already been provided, e.g. in the case of the seating furniture according to DE-GM 7 721 954 and 7 815 561, to divide the seat into a front and into a rear partial surface which is connected to the latter in an articulated manner. In this case there are three inclinable body support surfaces including the backrest, but here the adaptation to the respective posture is only achieved by a considerable additional construction effort.
- a recliner with a one-piece seat-back shell which consists of two rigid zones that are articulated to each other by a flexible central zone.
- the backrest is inclined backwards and held on armrests by leather straps.
- the shell When the user straightens up, the shell there is pressed deep down and the previously horizontal seat is pivoted into a very inclined position.
- the well-known armchair cannot be used as work seating.
- the invention has for its object to provide a work seating with synchronous seat and backrest adjustment that - while avoiding complex mechanics - an effective support also in the area of the lumbar vertebrae and in the rest position an even from the hollow of the knee to the shoulder blades Ensuring the support surfaces fit the user's body.
- This object is achieved according to the invention in that the seat and the backrest merge into one another via an arcuate, bendable intermediate part and in that the connecting line of the two articulation points of the support lever in the basic position at an angle between 0 to 25 °, preferably between 15 to 25 ° , is inclined to the vertical.
- the steep position of the support lever in the basic position ensures that when changing from an upright work posture to a reclined posture, the backrest is first moved considerably more horizontally backwards than downwards. In connection with the widening and quasi-rolling intermediate part between the seat and backrest, this provides a uniform and extensive support of the entire body during the transition to the rest position.
- the anatomy of the human body is taken into account in such a way that when changing over to a rest position, the upper body not only swings backwards like a lever around a joint, but at the same time the body also swings over the pelvis of the pelvis rolls a little to the rear and the upper body also collapses somewhat as the at least lower back lumbar vertebrae are moved back.
- the seating furniture according to the invention is adapted to these body movements and proves to be a very tight, comfortable support.
- the backrest is convexly curved in the vertical longitudinal section towards the seat and that the lower half of the backrest is inclined forward in the basic position. This enables a very good support of the lower lumbar vertebrae and the cross area when sitting upright, in which the lower part of the spine is also slightly inclined forward.
- the seat according to the invention performs a clear evasive movement to the rear, so that the user's pelvis can roll and the spine can pass into a more extended and reclined position.
- the distance between the two articulation points of the support lever is approximately twice as large as the distance between the lower articulation point of the support lever and the front seat articulation point and that these articulation points define an acute-angled triangle in the basic position.
- the constellation of these articulation points results in a coordinated behavior of the seat and backrest inclinations in the different seating positions of the human body.
- the flexible intermediate part proves to be of great advantage in the invention, since it makes mechanical sliding joints, toggle levers or similar complex mechanics superfluous.
- the seat linkage is about a quarter of the seat depth behind the front edge of the seat and that the front third of the seat is bent downward to a greater extent than the front edge of the seat is pivoted up when the seating furniture is pivoted back.
- the lower articulation point of the support lever can be offset from the center of the seat by about 10% of the seat depth, which among other things results in a great stability of the seating furniture against tipping.
- the backrest can be concavely curved in cross section to the seat and can be provided with a strongly drawn lumbar bulge, on which the upper articulation point of the support lever is arranged.
- these measures directly improve the support and, on the other hand, enable the support levers to be set very steeply without impairing the appearance of the seating furniture.
- the seat and the backrest consist of a one-piece plastic shell.
- the shell can have semi-cylindrical bearings with a snap edge at the front seat pivot point for receiving a horizontal bearing axis attached to the base frame.
- the seating furniture can be manufactured as a chair or as an armchair with armrests. In the latter case, elastic armrests are provided, which are attached to the articulation points of the seat and backrest on the seating furniture. With appropriate dimensions, these armrests can provide the entire return spring force for the seating furniture alone. Instead of or in addition to the springback via the armrests, it can also be provided that the support lever is loaded directly or indirectly at its lower end by a return spring.
- the seating furniture can be equipped with a device for adjusting the bias of the return spring in order to be able to adapt to the weight and size of the user.
- the chair can be equipped with a device for locking the support lever at least in the basic sitting position.
- either a torsion axis as the lower linkage of the support lever or helical or leaf spring or a gas spring can be provided as the return spring, which act on a cam projecting radially from a lower bearing shaft.
- the seat and backrest each have separate frames which merge into one another via elastic intermediate pieces.
- a column-shaped base frame 1 and 2 has a column-shaped base frame 1, from which at the upper end, approximately below the middle of the seat, a flat, broad support arm 2 protrudes obliquely upwards, which carries a horizontal axis 3 'at its front end, on which the seat 4 is articulated in its front area.
- a horizontal shaft 5 ' is mounted, at the two ends of which a support lever 6 is rigidly attached, the other end of which is approximately at lumbar height on a backrest 7 of the seating at position 8 are articulated at lumbar height.
- the articulation points 3, 5 and 8 form an acute-angled triangle, the connecting line V between the articulation points 5 and 8 being approximately twice as long as the distance between the articulation points 3 and 5 on the base frame.
- the connecting line V between the articulation points 5 and 8 of the support lever 6 is inclined at an angle a of approximately 20 ° with respect to the vertical.
- the basic position 1 is fixed to the front by a stop (not shown).
- the seat 4 and the backrest 7 consist of a one-piece plastic shell and are connected to one another in a virtually articulated manner by a middle or intermediate part 9 which is almost flat in cross section.
- the radius of curvature of this flexible intermediate part 9 is approximately 10 cm in the basic position.
- the backrest 7 is convex towards the seat - seen in the vertical longitudinal section - and the lower half 10 of the backrest 7 is inclined forward in the basic position.
- the backrest 7 is also curved in a horizontal cross-section concave to the seat and provided with a strongly drawn lumbar bulge 11, on each of which the upper articulation points of the two support levers 6 are designed in the form of bearing eyes 12 (FIG. 5).
- the front seat pivot point 3 lies about a quarter of the seat depth T behind the front edge 13 of the seat, and the front third of the seat is bent downward.
- the seat 4 In the working position according to FIG. 1, the seat 4 is essentially horizontal and the backrest 7 is aligned vertically on the middle, as indicated by the dash-dotted lines S and R in FIG. 1.
- the entire seat pivots on the one hand around its front articulation point 3 by a small angle ⁇ , but the relatively steep support lever 6 of the backrest 7 additionally forces a pivoting movement by an angle y backwards.
- a considered point P lying at the lumbar level thus executes a movement component X in the horizontal direction, which is considerably larger than its movement component Y in the vertical direction, when moving into the position P 'of the rest position. This corresponds to the natural movement of the body (see FIGS. 12 and 13) during the transition from an upright sitting posture according to FIG.
- the transition area 9 between seat 4 and backrest 7 is bulged out to the rear to such an extent that, when sitting in a straight position, a free space 18 usually remains, into which the pelvis inserts itself during the transition into the inclined position.
- Fig. 3 shows the chair according to FIGS. 1 and 2 in a further development as an armchair with elastically resilient armrests 19 which are fastened to the seat or to the backrest in the region of the articulation points 3 and 8.
- the seat and backrest each comprise an approximately U-shaped support tube frame 21, 22, in the open ends of which bent spring steel pieces 23 are inserted with their ends.
- the bent spring steel pieces 23 in turn form the flexurally elastic zone analogous to the intermediate part 9 of the exemplary embodiment according to FIG. 1, and they are also strongly curved in accordance with the seat shell representations according to FIGS. 5 and 13.
- the two support arms 6 and 6 ' are each about a torsion axis 24, 24 'mounted in the base, which provide the springback force.
- the torsion axes are taken from a cross member 25 to which they are rigidly attached in the center, see also FIG. 6.
- FIG. 6 illustrates a device with which the clamped middle ends of the torsion axes 24/24 'can be pretensioned.
- return springs are preferably provided in the form of cylindrical coil springs or a leaf spring assembly, which are arranged within the support arm 2.
- the restoring spring designed as a leaf spring assembly 28 according to FIG. 7 can likewise be used to set the desired restoring force.
- the leaf spring assembly 28 lies at one end between an L-shaped receptacle 29 arranged on the support arm 2 and an abutment 30 screwed onto the support arm 2. Its free end lies on the foot end of a cap screw 31 which passes through a cam 32 which is held by a clamping ring 33 is rotatably connected to the horizontal shaft 5 '. By screwing in the screw 31, the leaf spring assembly 28 is bent around its abutment 30 and is thus preloaded.
- the restoring force is exerted on the backrest 7 by two helical springs 34 arranged parallel next to one another.
- the helical springs 34 enclose bolts 35, which at one end pass through a movable abutment plate 36, which forms a support surface for the helical springs 34.
- the second support surface of the coil springs 34 forms a pressure plate 38 which is firmly connected to the bolts 35.
- the bolts are each rotatably connected to a cam 39 of the horizontal shaft 5 'via a fork head 37.
- the bolts 35 are mounted in corresponding bores in the rigid support plate 40 and also protrude beyond the support plate 40 in the rest position.
- the support plate 40 carries on an L-shaped bend 41 a bearing piece 43 provided with an inclined plane 42, on the inclined plane 42 of which a slide piece 44 is seated a threaded hole directed onto the inclined plane is provided.
- a knurled head screw 45 which passes through the angled portion 41 and the bearing piece 43 with great play and is screwed into the sliding piece 44, the abutment plate 36 can be moved together with the sliding piece and thus the spring preload can be adjusted.
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)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Special Chairs (AREA)
Description
Die Erfindung betrifft ein Arbeits-Sitzmöbel, mit einer mit einem Sitz gelenkig verbundenen Rükkenlehne und mit einem Untergestell, an welchem der Sitz in seinem vorderen Bereich über ein Gelenk und die Rückenlehne durch einen in Lendenhöhe angelenkten Stützhebel abgestützt sind, wobei der Stützhebel etwa unterhalb der Sitzmitte am Untergestell angelenkt ist und wobei in der Grundstellung der Sitz im wesentlichen horizontal und die Rückenlehne im Mittel vertikal ausgerichtet sind und durch eine Rückstellfederungskraft in die Grundstellung zurückgeführt werden.The invention relates to a piece of work seating, with a backrest hingedly connected to a seat and with a base frame, on which the seat is supported in its front region via a joint and the backrest is supported by a lumbar support arm, the support lever being approximately below the The center of the seat is articulated on the underframe and, in the basic position, the seat is oriented essentially horizontally and the backrest is oriented vertically on the middle and is returned to the basic position by a return spring force.
Sitze, bei denen die Sitzneigung und die Rükkenneigung in einem bestimmten Verhältnis zueinander verändert werden können, sind in verschiedenen Ausführungsformen bekannt. In unbelastetem Zustand weisen die Sitzmöbel bei im allgemeinen horizontaler Erstreckung des Sitzes einen Winkel von 90° zwischen Sitz und Rückenlehne auf, der erhalten bleibt, solange der Benutzer in Arbeitshaltung im wesentlichen nur die Sitzfläche belastet. Wenn sich der Benutzer in eine Ruhestellung nach hinten lehnen will, neigt sich bei den bekannten Sitzmöbeln - im allgemeinen erst nach Lösen einer Arretierung - die Sitzfläche um einen geringen Winkel am hinteren Ende leicht nach unten und schwenkt die Rückenlehne um einen zwei- bis dreifach grösseren Winkel nach hinten zurück, wobei für die Ruhestellung Winkel bis zu 130°C zwischen Sitz- und Rückenfläche vorgesehen werden. Solche Sitzmöbel mit sogenannter «synchroner» Sitz- und Rückenverstellung erbringen zwar schon eine ergonomisch recht günstige Anpassung der Sitzmöbelstützflächen an die jeweilige Körperhaltung des Benutzers, jedoch trifft dies nur begrenzt im Bereich der unteren Lendenwirbel zu, falls man wie etwa bei der Anordnung nach der DE-OS 2 332 596 den hinteren Sitzrand unmittelbar oder über niedrige Lagerböcke an die angrenzende Rückenlehne anlenkt. Es ist deshalb auch schon vorgesehen worden, z.B. bei den Sitzmöbeln nach den DE-GM 7 721 954 und 7 815 561, die Sitzfläche in eine vordere und in eine mit dieser gelenkig verbundene hintere Teilfläche zu unterteilen. In diesem Fall liegen zwar einschliesslich der Rückenlehne drei neigungsveränderliche Körperabstützflächen vor, jedoch ist hier die Anpassung an die jeweilige Körperhaltung nur durch einen beträchtlichen konstruktiven Mehraufwand erreicht.Seats in which the seat inclination and the back inclination can be changed in a certain ratio to one another are known in various embodiments. In the unloaded state, the seating furniture, when the seat is generally horizontal, has an angle of 90 ° between the seat and the backrest, which is maintained as long as the user in the working position essentially only loads the seat surface. If the user wants to lean back into a rest position, the known seat furniture tilts - generally only after releasing a lock - the seat surface slightly downwards by a small angle at the rear end and swivels the backrest by a two to three times larger Angle backwards, with angles of up to 130 ° C between the seat and back surface for the rest position. Such seating furniture with so-called "synchronous" seat and back adjustment already provides an ergonomically quite favorable adaptation of the seating furniture support surfaces to the respective posture of the user, but this applies only to a limited extent in the area of the lower lumbar vertebrae if, for example, the arrangement according to DE -OS 2 332 596 links the rear seat edge directly or via low pedestals to the adjacent backrest. It has therefore already been provided, e.g. in the case of the seating furniture according to DE-GM 7 721 954 and 7 815 561, to divide the seat into a front and into a rear partial surface which is connected to the latter in an articulated manner. In this case there are three inclinable body support surfaces including the backrest, but here the adaptation to the respective posture is only achieved by a considerable additional construction effort.
Durch die CH-A-541 946 ist ferner ein Ruhesessel mit einstückiger Sitz-Lehnen-Schale bekannt, die aus zwei starren Zonen besteht, die durch eine flexible Mittelzone gelenkig miteinander verbunden sind. Dort ist die Lehne in der Grundstellung schräg nach hinten geneigt und ist sie durch Lederriemen an Armlehnen gehalten. Wenn sich der Benutzer aufrichtet, wird die dortige Schale tief nach unten durchgedrückt und wird der zuvor horizontale Sitz in eine sehr schräge Lage geschwenkt. Als Arbeits-Sitzmöbel ist der bekannte Sessel nicht verwendbar.From CH-A-541 946 a recliner with a one-piece seat-back shell is known, which consists of two rigid zones that are articulated to each other by a flexible central zone. There, in the basic position, the backrest is inclined backwards and held on armrests by leather straps. When the user straightens up, the shell there is pressed deep down and the previously horizontal seat is pivoted into a very inclined position. The well-known armchair cannot be used as work seating.
Der Erfindung liegt die Aufgabe zugrunde, ein Arbeits-Sitzmöbel mit synchroner Sitz- und Rükkenlehnenverstellung zu schaffen, das - unter Vermeidung einer aufwendigen Mechanik - eine auch im Bereich der Rückenlendenwirbel wirksame Abstützung und in der Ruhestellung eine etwa von den Kniekehlen bis zu den Schulterblättern gleichmässige Anschmiegung der Stützflächen an den Körper des Benutzers gewährleistet.The invention has for its object to provide a work seating with synchronous seat and backrest adjustment that - while avoiding complex mechanics - an effective support also in the area of the lumbar vertebrae and in the rest position an even from the hollow of the knee to the shoulder blades Ensuring the support surfaces fit the user's body.
Die Lösung dieser Aufgabe ist erfindungsgemäss dadurch erreicht, dass der Sitz und die Rükkenlehne über einen bogenförmigen, aufbiegbaren Zwischenteil ineinander übergehen und dass die Verbindungslinie der beiden Anlenkstellen des Stützhebels in der Grundstellung in einem Winkel zwischen 0 bis 25°, vorzugsweise zwischen 15 bis 25°, gegenüber der Vertikalen geneigt ist.This object is achieved according to the invention in that the seat and the backrest merge into one another via an arcuate, bendable intermediate part and in that the connecting line of the two articulation points of the support lever in the basic position at an angle between 0 to 25 °, preferably between 15 to 25 ° , is inclined to the vertical.
Durch die steile Stellung des Stützhebels in der Grundstellung wird sichergestellt, dass beim Überwechseln aus einer aufrechten Arbeitshaltung in eine zurückgeneigte Haltung die Rückenlehne zunächst beträchtlich stärker in horizontaler Richtung nach hinten als abwärts bewegt wird. Dies erbringt in Verbindung mit dem sich dabei aufweitenden und quasi abrollenden Zwischenteil zwischen Sitz und Rückenlehne eine gleichmässige und grossflächige Abstützung des gesamten Körpers beim Übergang in die Ruhestellung. Durch die bei der Erfindung vorgesehene anfängliche Bevorzugung der Lehnenrückwärtsbewegung gegenüber der Lehnenabwärtsbewegung ist die Anatomie des menschlichen Körpers dahingehend berücksichtigt, dass bei einem Überwechseln in eine Ruhestellung der Oberkörper nicht nur wie ein Hebel um ein Gelenk nach hinten schwenkt, sondern dass zugleich auch der Körper über die Sitzhöcker des Beckens nach hinten etwas abrollt und der Oberkörper auch insgesamt unter Zurückbewegen der zumindest unteren Rükkenlendenwirbel etwas in sich zusammensackt. Das Sitzmöbel nach der Erfindung ist diesen Körperbewegungen angepasst und erweist sich als eine sehr eng sich anschmiegende, angenehme Abstützung.The steep position of the support lever in the basic position ensures that when changing from an upright work posture to a reclined posture, the backrest is first moved considerably more horizontally backwards than downwards. In connection with the widening and quasi-rolling intermediate part between the seat and backrest, this provides a uniform and extensive support of the entire body during the transition to the rest position. Due to the initial preference of the backrest movement over the backrest movement provided for in the invention, the anatomy of the human body is taken into account in such a way that when changing over to a rest position, the upper body not only swings backwards like a lever around a joint, but at the same time the body also swings over the pelvis of the pelvis rolls a little to the rear and the upper body also collapses somewhat as the at least lower back lumbar vertebrae are moved back. The seating furniture according to the invention is adapted to these body movements and proves to be a very tight, comfortable support.
Gemäss einer bevorzugten Ausführungsform der Erfindung kann vorgesehen werden, dass die Rückenlehne im vertikalen Längsschnitt zum Sitz hin konvex gekrümmt ist und dass die untere Hälfte der Rückenlehne in der Grundstellung nach vorne geneigt ist. Hierdurch wird eine sehr gute Abstützung der unteren Lendenwirbel und des Kreuzbereiches bei aufrechter Sitzhaltung ermöglicht, bei welcher der untere Teil des Rückgrates ebenfalls etwas nach vorne geneigt ist. Beim Übergang über die Vertikale in eine zurückgelehnte Ruhestellung führt der Sitz nach der Erfindung eine deutliche Ausweichbewegung nach hinten aus, so dass das Becken des Benutzers abrollen und das Rückgrat in eine gestrecktere und nach rückwärts geneigte Lage übergehen kann.According to a preferred embodiment of the invention it can be provided that the backrest is convexly curved in the vertical longitudinal section towards the seat and that the lower half of the backrest is inclined forward in the basic position. This enables a very good support of the lower lumbar vertebrae and the cross area when sitting upright, in which the lower part of the spine is also slightly inclined forward. When changing over the vertical to a reclined rest position, the seat according to the invention performs a clear evasive movement to the rear, so that the user's pelvis can roll and the spine can pass into a more extended and reclined position.
Nach weiteren Merkmalen der Erfindung kann vorgesehen werden, dass der Abstand zwischen den beiden Anlenkstellen des Stützhebels etwa doppelt so gross ist wie der Abstand zwischen der unteren Anlenkstelle des Stützhebels und der vorderen Sitzanlenkstelle und dass diese Anlenkstellen in der Grundstellung ein spitzwinkliges Dreieck definieren. Aus der Konstellation dieser Anlenkstellen ergibt sich ein abgestimmtes Verhalten der Sitz- und Rückenlehnenneigungen bei den verschiedenen Sitzpositionen des menschlichen Körpers. Von grossem Vorteil erweist sich bei der Erfindung der biegeelastische Zwischenteil, da er mechanische Schiebegelenke, Kniehebel oder ähnliche aufwendige Mechanik überflüssig macht.According to further features of the invention it can be provided that the distance between the two articulation points of the support lever is approximately twice as large as the distance between the lower articulation point of the support lever and the front seat articulation point and that these articulation points define an acute-angled triangle in the basic position. The constellation of these articulation points results in a coordinated behavior of the seat and backrest inclinations in the different seating positions of the human body. The flexible intermediate part proves to be of great advantage in the invention, since it makes mechanical sliding joints, toggle levers or similar complex mechanics superfluous.
Der Erfindung zufolge kann weiterhin vorgesehen werden, dass die Sitzanlenkstelle um etwa ein Viertel der Sitztiefe hinter der Sitzvorderkante liegt und dass das vordere Sitzdrittel nach unten in einem stärkeren Masse abgebogen ist, als die Sitzvorderkante beim Zurückschwenken des Sitzmöbels hochgeschwenkt wird. Durch diese Massnahmen wird in allen Sitzpositionen auch eine günstige Abstützung bzw. Freiheit im Bereich der Kniekehle sichergestellt.According to the invention, it can further be provided that the seat linkage is about a quarter of the seat depth behind the front edge of the seat and that the front third of the seat is bent downward to a greater extent than the front edge of the seat is pivoted up when the seating furniture is pivoted back. These measures also ensure favorable support and freedom in the area of the hollow of the knee in all seating positions.
Nach weiteren Merkmalen der Erfindung kann die untere Anlenkstelle des Stützhebels etwa um 10% der Sitztiefe nach hinten aus der Sitzmitte versetzt sein, wodurch sich unter anderem eine grosse Kippstabilität des Sitzmöbels ergibt.According to further features of the invention, the lower articulation point of the support lever can be offset from the center of the seat by about 10% of the seat depth, which among other things results in a great stability of the seating furniture against tipping.
Ferner kann die Rückenlehne im Querschnitt konkav zum Sitz gekrümmt und mit einem stark vorgezogenen Lendenbausch versehen sein, an welchem die obere Anlenkstelle des Stützhebels angeordnet ist. Diese Massnahmen verbessern einerseits unmittelbar die Abstützung und ermöglichen andrerseits eine sehr steile Stellung der Stützhebel ohne Beeinträchtigung des Erscheinungsbildes des Sitzmöbels.Furthermore, the backrest can be concavely curved in cross section to the seat and can be provided with a strongly drawn lumbar bulge, on which the upper articulation point of the support lever is arranged. On the one hand, these measures directly improve the support and, on the other hand, enable the support levers to be set very steeply without impairing the appearance of the seating furniture.
Gemäss einer bevorzugten Ausführungsform der Erfindung bestehen der Sitz und die Rückenlehne aus einer einstückigen Kunststoffschale. Hierbei kann die Schale an der vorderen Sitzanlenkstelle halbzylindrische Lager mit Schnapprand zur Aufnahme einer am Untergestell befestigten horizontalen Lagerachse aufweisen.According to a preferred embodiment of the invention, the seat and the backrest consist of a one-piece plastic shell. In this case, the shell can have semi-cylindrical bearings with a snap edge at the front seat pivot point for receiving a horizontal bearing axis attached to the base frame.
Das Sitzmöbel kann als Stuhl oder auch als Sessel mit Armlehnen hergestellt werden. Im letzteren Falle werden elastische Armlehnen vorgesehen, welche an den Anlenkstellen von Sitz und Rückenlehne am Sitzmöbel befestigt sind. Diese Armlehnen können bei entsprechender Dimensionierung schon allein die gesamte Rückstellfederungskraft für das Sitzmöbel liefern. Statt oder zusätzlich zu der Rückfederung über die Armlehnen kann aber auch vorgesehen werden, dass der Stützhebel unmittelbar oder mittelbar an seinem unteren Ende durch eine Rückstellfeder belastet ist. Das Sitzmöbel kann dabei mit einer Einrichtung zur Einstellung der Vorspannung der Rückstellfeder ausgerüstet sein, um eine Anpassung an Gewicht und Grösse des Benutzers vornehmen zu können.The seating furniture can be manufactured as a chair or as an armchair with armrests. In the latter case, elastic armrests are provided, which are attached to the articulation points of the seat and backrest on the seating furniture. With appropriate dimensions, these armrests can provide the entire return spring force for the seating furniture alone. Instead of or in addition to the springback via the armrests, it can also be provided that the support lever is loaded directly or indirectly at its lower end by a return spring. The seating furniture can be equipped with a device for adjusting the bias of the return spring in order to be able to adapt to the weight and size of the user.
Ferner kann der Stuhl mit einer Einrichtung zur Arretierung des Stützhebels zumindest in der Sitzgrundstellung ausgerüstet sein.Furthermore, the chair can be equipped with a device for locking the support lever at least in the basic sitting position.
Als Rückstellfeder können der Erfindung zufolge entweder eine Torsionsachse als untere Anlenkung des Stützhebels oder Schrauben- oder Blattfeder oder eine Gasfeder vorgesehen sein, welche auf einen radial von einer unteren Lagerwelle abragenden Nocken einwirken.According to the invention, either a torsion axis as the lower linkage of the support lever or helical or leaf spring or a gas spring can be provided as the return spring, which act on a cam projecting radially from a lower bearing shaft.
Schliesslich kann der Erfindung zufolge als Alternative zu einer einstückigen Kunststoffschale auch vorgesehen werden, dass Sitz und Rückenlehne jeweils gesonderte Rahmen aufweisen, welche über elastische Zwischenstücke ineinander übergehen.Finally, according to the invention, as an alternative to a one-piece plastic shell, it can also be provided that the seat and backrest each have separate frames which merge into one another via elastic intermediate pieces.
Die Erfindung wird im folgenden anhand mehrerer in der Zeichnung dargestellter Ausführungsbeispiele näher erläutert, wobei zeigen:
- Figur 1 ein erstes Ausführungsbeispiel eines als Arbeitsstuhl ausgebildeten Sitzmöbels nach der Erfindung, in Seitenansicht und Grundstellung,
Figur 2 den Arbeitsstuhl nach Figur 1 in zurückgeschwenkter Ruhestellung,Figur 3 ein zweites Ausführungsbeispiel eines Sitzmöbels, welches mit elastischen Armlehnen versehen ist,Figur 4 ein drittes Ausführungsbeispiel eines Sitzmöbels in vereinfachter perspektivischer DarstellungFigur 5 in Seitenansicht die Sitz-Rückenlehnenschale des Sitzmöbels,Figur 6 in einem Detailschnitt ein Ausführungsbeispiel für die Ausbildung einer Rückstellfeder für das Sitzmöbel,Figur 7 in einem Detailschnitt eine zweite Ausführungsform einer Rückstellfederung für den Sitz,Figur 8 in einem Detailschnitt eine dritte Ausführungsform der Rückfederung für das Sitzmöbel,Figur 9 eine Draufsicht zuFigur 8,Figur 10 eine Detaildraufsicht gemäss Pfeil X inFigur 8,Figur 11 einen Schnitt gemäss der Linie XI-XI inFigur 10 undFigur 12 und 13 je eine Skizze zur Veranschaulichung der Körperbewegungen beim Übergang von einer aufrechten Sitzhaltung zu einer zurückgeneigten Haltung.
- FIG. 1 shows a first exemplary embodiment of a piece of seating furniture designed as a work chair according to the invention, in side view and basic position,
- FIG. 2 the work chair according to FIG. 1 in the rest position swung back,
- FIG. 3 shows a second exemplary embodiment of a piece of seating furniture which is provided with elastic armrests,
- Figure 4 shows a third embodiment of a piece of seating furniture in a simplified perspective view
- 5 is a side view of the seat backrest shell of the seating furniture,
- FIG. 6 shows a detail section of an exemplary embodiment for the formation of a return spring for the seating furniture,
- FIG. 7 in a detail section a second embodiment of a return spring for the seat,
- 8 shows a detail section of a third embodiment of the springback for the seating furniture,
- FIG. 9 shows a top view of FIG. 8,
- FIG. 10 shows a detailed top view according to arrow X in FIG. 8,
- Figure 11 is a section along the line XI-XI in Figure 10 and
- Figures 12 and 13 each a sketch to illustrate the body movements during the transition from an upright sitting posture to a reclined posture.
Das Sitzmöbel nach den Fig. 1 und 2 besitzt ein säulenförmiges Untergestell 1, von welchem am oberen, etwa unterhalb der Sitzmitte liegenden Ende nach vorne ein flacher, breiter Tragarm 2 schräg aufwärts abragt, der an seinem vorderen Ende eine horizontale Achse 3' trägt, auf welcher der Sitz 4 in seinem vorderen Bereich angelenkt ist. Am oberen Ende ist in der Säule des Untergestelles 1, etwas-ca. 10% der Sitztiefe T - gegenüber der Säulenachse nach hinten versetzt, eine horizontale Welle 5' gelagert, an deren beiden Enden jeweils ein Stützhebel 6 starr befestigt ist, welche mit ihrem anderen Ende etwa in Lendenhöhe an einer Rückenlehne 7 des Sitzmöbels an der Stelle 8 etwa in Lendenhöhe angelenkt sind. Die Anlenkstellen 3, 5 und 8 bilden ein spitzwinkliges Dreieck, wobei die Verbindungslinie V zwischen den Anlenkstellen 5 und 8 etwa doppelt so lang ist wie der Abstand zwischen den Anlenkstellen 3 und 5 am Untergestell. Die Verbindungslinie V zwischen den Anlenkstellen 5 und 8 des Stützhebels 6 ist um einen Winkel a von etwa 20° gegenüber der Vertikalen geneigt. Die Grundstellung nach Fig. 1 ist durch einen Anschlag (nicht gezeigt) nach vorne festgelegt.1 and 2 has a column-shaped base frame 1, from which at the upper end, approximately below the middle of the seat, a flat,
Beim Ausführungsbeispiel nach den Fig. 1 und 2 bestehen Sitz 4 und Lehne 7 aus einer einstückig hergestellten Kunststoffschale und sind durch ein im Querschnitt fast ebenes Mittel- oder Zwischenteil 9 miteinander quasi gelenkig verbunden. Der Krümmungsradius dieses biegsamen Zwischenteiles 9 beträgt in der Grundstellung etwa 10 cm. Die Rückenlehne 7 ist zum Sitz hin - im vertikalen Längsschnitt gesehen - konvex gewölbt, und die untere Hälfte 10 der Rückenlehne 7 ist in der Grundstellung nach vorne hin geneigt. Die Rükkenlehne 7 ist ferner im horizontalen Querschnitt konkav zum Sitz gekrümmt und mit einem stark vorgezogenen Lendenbausch 11 versehen, an welchem jeweils die oberen Anlenkstellen der beiden Stützhebel 6 in Form von Lageraugen 12 (Fig. 5) ausgebildet sind.In the embodiment according to FIGS. 1 and 2, the
Die vordere Sitzanlenkstelle 3 liegt um etwa ein Viertel der Sitztiefe T hinter der Sitzvorderkante 13, und das vordere Drittel des Sitzes ist nach unten abgebogen. An die Unterseite des Sitzes sind halbzylindrische Lager 14 mit Schnapprändern 15 zur Aufnahme der Enden der Lagerachse 3' angeformt.The front
In der Arbeitsstellung nach Fig. 1 sind der Sitz 4 im wesentlichen horizontal und die Lehne 7 im Mittel vertikal ausgerichtet, wie durch die strichpunktierten Linien S und R in Fig. 1 angedeutet ist. Beim Zurücklehnen schwenkt der gesamte Sitz einerseits um seine vordere Anlenkstelle 3 um einen kleinen Winkel ß nach unten, wobei aber der verhältnismässig steil stehende Stützhebel 6 der Rückenlehne 7 zusätzlich eine Schwenkbewegung um einen Winkel y nach hinten aufzwingt. Ein betrachteter, in Lendenhöhe liegender Punkt P führt beim Übergang in die Lage P' der Ruhestellung somit eine Bewegungskomponente X in horizontaler Richtung aus, die beträchtlich grösser ist als seine Bewegungskomponente Y in vertikaler Richtung. Dies entspricht der natürlichen Körperbewegung (vergl. Fig. 12 und 13) beim Übergang von einer aufrechten Sitzhaltung nach Fig. 12 in eine zurückgelehnte Sitzstellung nach Fig. 13, da ausser der Schwenkung des Körpers auch ein Abrollen über die Sitzhöcker 16 erfolgt und sich das Rückgrat 17 etwas mehr streckt. Der Übergangsbereich 9 zwischen Sitz 4 und Lehne 7 ist bei der bevorzugten Ausführungsform soweit nach hinten ausgewölbt, dass bei gerader Sitzhaltung üblicherweise ein freier Raum 18 verbleibt, in den sich das Becken beim Übergang in die geneigte Stellung einlegt.In the working position according to FIG. 1, the
Fig. 3 zeigt den Stuhl nach den Fig. 1 und 2 in Weiterbildung als Sessel mit elastisch rückfedernden Armlehnen 19, die im Bereich der Anlenkstellen 3 und 8 am Sitz bzw. an der Lehne befestigt sind.Fig. 3 shows the chair according to FIGS. 1 and 2 in a further development as an armchair with elastically
Bei dem Ausführungsbeispiel nach der Fig. 4, bei der die Polsterung bzw. Bespannung 20 strichpunktiert angedeutet ist, umfassen Sitz und Rükkenlehne jeweils einen etwa U-förmigen Stützrohrrahmen 21, 22, in deren offenen Enden gebogene Federstahlstücke 23 mit ihren Enden jeweils eingesteckt sind. Die gebogenen Federstahlstükke 23 bilden wiederum die biegeelastische Zone analog zum Zwischenteil 9 des Ausführungsbeispieles nach Fig. 1, und sie sind ebenfalls stark gekrümmt ausgebildet entsprechend den Sitzschalendarstellungen nach den Fig. 5 und 13. Bei diesem Ausführungsbeispiel sind die beiden Stützhebei6und6' über jeweils eine Torsionsachse 24, 24' im Untergestell gelagert, welche die Rückfederungskraft liefern. Die Torsionsachsen sind von einem Querholm 25 augenommen, an dem sie mittig starr befestigt sind, vergl. auch Fig. 6.In the embodiment according to FIG. 4, in which the upholstery or covering 20 is indicated by dash-dotted lines, the seat and backrest each comprise an approximately U-shaped
Fig. 6 veranschaulicht eine Einrichtung, mit der die eingespannten mittleren Enden der Torsionsachsen 24/24' vorgespannt werden können. Ein starr mit den Torsionsachsen 24/24' verbundener, in den Tragarm 2 abragender Hebel 26 nimmt in einer, an seinem vorderen Ende befindlichen Gewindebohrung eine Rändelschraube 27 auf. Diese Rändelschraube 27 stützt sich mit ihrem Ende an der Wandung des U-förmigen Tragarmes 2 ab. Durch Drehen der Rändelschraube 27 wird der Hebel 26 um den Torsionsachsenmittelpunkt geschwenkt, so dass die Torsionsachsen 24/24' in eine vorgespannte Lage gedreht werden.6 illustrates a device with which the clamped middle ends of the torsion axes 24/24 'can be pretensioned. A
Für die Sitzmöbel nach den Ausführungsbeispielen der Fig. 1 bis 3 sind vorzugsweise Rückstellfedern in Form zylindrischer Schraubenfedern oder eines Blattfederpaketes vorgesehen, die innerhalb des Tragarmes 2 angeordnet sind. Mit der als Blattfederpaket 28 ausgebildeten Rückstellfeder gemäss Fig. 7 kann ebenfalls die gewünschte Rückstellkraft eingestellt werden. Das Blattfederpaket 28 liegt an einem Ende zwischen einer am Tragarm 2 angeordneten L-förmigen Aufnahme 29 und einem am Tragarm 2 angeschraubten Widerlager 30. Sein freies Ende liegt auf dem Fussende einer Kopfschraube 31 auf, die einen Nocken 32 durchsetzt, der durch einen Klemmring 33 drehfest mit der horizontalen Welle 5' verbunden ist. Durch ein Eindrehen der Schraube 31 wird das Blattfederpaket 28 um sein Widerlager 30 gebogen und erfährt somit eine Vorspannung.For the seating furniture according to the embodiments of FIGS. 1 to 3, return springs are preferably provided in the form of cylindrical coil springs or a leaf spring assembly, which are arranged within the
Bei dem Ausführungsbeispiel nach den Fig. 8 bis 11 wird die Rückstellkraft durch zwei parallel nebeneinander angeordnete Schraubenfedern 34 auf die Rückenlehne 7 ausgeübt. Die Schraubenfedern 34 umschliessen Bolzen 35, die mit ihrem einen Ende eine bewegliche Widerlagerplatte 36 durchsetzen, welche eine Abstützfläche für die Schraubenfedern 34 bildet. Die zweite Abstützfläche der Schraubenfedern 34 bildet ein Druckteller 38, der fest mit den Bolzen 35 verbunden ist. Die Bolzen sind jeweils über einen Gabelkopf 37 drehbar mit einem Nocken 39 der horizontalen Welle 5' verbunden.In the embodiment according to FIGS. 8 to 11, the restoring force is exerted on the
Die Bolzen 35 sind in entsprechenden Bohrungen der starren Abstützplatte 40 gelagert und ragen auch in Ruheposition über die Abstützplatte 40 hinaus. Die Abstützplatte 40 trägt auf einer L-förmigen Abwinklung 41 ein mit einer schiefen Ebene 42 versehenes Lagerstück 43, auf dessen schiefer Ebene 42 ein Gleitstück 44 sitzt, das mit einer auf die schiefe Ebene gerichteten Gewindebohrung versehen ist. Mittels einer Rändelkopfschraube 45, welche die Abwinklung 41 und das Lagerstück 43 mit grossem Spiel durchsetzt und in das Gleitstück 44 eingeschraubt ist, kann die Widerlagerplatte 36 zusammen mit dem Gleitstück verschoben und so die Federvorspannung eingestellt werden.The
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT80108111T ATE12169T1 (en) | 1980-10-01 | 1980-12-22 | WORK SEATING. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803036993 DE3036993A1 (en) | 1980-10-01 | 1980-10-01 | WORK SEAT |
DE3036993 | 1980-10-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0049310A1 EP0049310A1 (en) | 1982-04-14 |
EP0049310B1 true EP0049310B1 (en) | 1985-03-20 |
Family
ID=6113289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80108111A Expired EP0049310B1 (en) | 1980-10-01 | 1980-12-22 | Working chair |
Country Status (12)
Country | Link |
---|---|
US (1) | US4451085A (en) |
EP (1) | EP0049310B1 (en) |
JP (1) | JPS5764014A (en) |
AR (1) | AR227548A1 (en) |
AT (1) | ATE12169T1 (en) |
AU (1) | AU542582B2 (en) |
BR (1) | BR8102728A (en) |
CA (1) | CA1156923A (en) |
DE (2) | DE3036993A1 (en) |
ES (1) | ES267165Y (en) |
MX (1) | MX152858A (en) |
ZA (1) | ZA814319B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011105290A1 (en) | 2010-06-15 | 2011-12-15 | Claudia Plikat | "Chair" |
US8967726B2 (en) | 2007-09-20 | 2015-03-03 | Herman Miller, Inc. | Load support structure |
US11553797B2 (en) | 2015-04-13 | 2023-01-17 | Steelcase Inc. | Seating arrangement |
Families Citing this family (88)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3232771A1 (en) * | 1982-09-03 | 1984-03-08 | Wilkhahn Wilkening + Hahne GmbH + Co, 3252 Bad Münder | WORK SEAT |
CH662257A5 (en) * | 1983-07-20 | 1987-09-30 | Syntech Sa | WORK CHAIR. |
DE3429186A1 (en) * | 1984-08-08 | 1986-02-20 | Uredat-Neuhoff, Angela, 4592 Lindern | SEAT, IN PARTICULAR OFFICE CHAIR |
SE456397C (en) * | 1984-10-19 | 1990-02-12 | Johan Magnus Ullman | CHAIR INCLUDING A SEAT WITH AN OUTLET LOCATED PARTY |
DE3570973D1 (en) * | 1984-10-23 | 1989-07-20 | Protoned Bv | Chair |
DE3537203A1 (en) * | 1984-10-24 | 1986-04-24 | Klöber GmbH & Co, 7770 Überlingen | Work chair with inclination mechanism for seat and back |
FR2575051B1 (en) * | 1984-12-21 | 1987-02-27 | Linguanotto Ets | SEAT, IN PARTICULAR WORKING SEAT, IN SEVERAL POSITIONS |
DE8515221U1 (en) * | 1985-05-23 | 1986-05-22 | VOKO - Franz Vogt & Co, 6301 Pohlheim | Seating |
DE3528335A1 (en) * | 1985-08-07 | 1987-02-26 | Roeder Soehne Sitzmoebelfab | DEVICE FOR SUPPORTING A PART OF A FURNITURE, IN PARTICULAR A OFFICE CHAIR, ON ANOTHER PART OF THIS FURNITURE |
DE8607194U1 (en) * | 1986-03-15 | 1986-04-30 | Drabert Söhne Minden (Westf.), 4950 Minden | Seating |
US5050931A (en) * | 1986-04-10 | 1991-09-24 | Steelcase Inc. | Controlled deflection front lip for seating |
US5567012A (en) * | 1986-04-10 | 1996-10-22 | Steelcase, Inc. | Chair control |
IT206947Z2 (en) * | 1986-06-12 | 1987-10-26 | Pro Cord Srl | CHAIR WITH ARTICULATED BACKREST |
DE3642796A1 (en) * | 1986-12-15 | 1988-06-23 | Eckhard Hansen | POINT SYNCHRONOUS ADJUSTMENT DEVICE FOR OFFICE CHAIRS, SEAT FURNITURE OR THE LIKE |
DE3800751A1 (en) * | 1987-01-19 | 1988-08-04 | Okamura Corp | Armchair |
JPS63158237U (en) * | 1987-04-03 | 1988-10-17 | ||
DE3719784A1 (en) * | 1987-06-13 | 1988-12-22 | Roeder Soehne Sitzmoebelfab | A piece of seating furniture |
JPH0511791Y2 (en) * | 1987-08-24 | 1993-03-24 | ||
US4840426A (en) * | 1987-09-30 | 1989-06-20 | Davis Furniture Industries, Inc. | Office chair |
DE3737492C2 (en) * | 1987-11-05 | 2003-03-27 | Wilkhahn Wilkening & Hahne | Chair with four swivel joints |
DE3737491C2 (en) * | 1987-11-05 | 2003-03-20 | Wilkhahn Wilkening & Hahne | chair |
US4786105A (en) * | 1988-02-24 | 1988-11-22 | All Day Chair Company | Continually positionable chair with adjustable lumbar support |
DE3837727A1 (en) * | 1988-11-07 | 1990-05-10 | Link Wilhelm Kg | CHAIR, ESPECIALLY OFFICE CHAIR |
DE3900220A1 (en) * | 1989-01-05 | 1990-07-12 | Wilkhahn Wilkening & Hahne | CHAIR |
WO1990007887A1 (en) * | 1989-01-11 | 1990-07-26 | Maxton Fox Commercial Furniture Pty. Limited | A chair |
US5106157A (en) * | 1989-03-01 | 1992-04-21 | Herman Miller, Inc. | Chair height and tilt adjustment mechanisms |
US5133587A (en) * | 1989-11-20 | 1992-07-28 | Hadden Jr James R | Seat |
JPH047022U (en) * | 1990-05-10 | 1992-01-22 | ||
FR2671702A1 (en) * | 1991-01-22 | 1992-07-24 | Lavigne Pierre | Variable-geometry chair |
US5318346A (en) * | 1991-05-30 | 1994-06-07 | Steelcase Inc. | Chair with zero front rise control |
US5203853A (en) * | 1991-09-18 | 1993-04-20 | Herman Miller, Inc. | Locking chair tilt mechanism with torsion bar |
US5320410A (en) * | 1992-01-14 | 1994-06-14 | Steelcase Inc. | Chair control |
US5308142A (en) * | 1992-01-23 | 1994-05-03 | Steelcase, Inc. | Chair with arm mounted motion control |
DE4209066C1 (en) * | 1992-03-20 | 1993-04-08 | Simon 4807 Borgholzhausen De Desanta | |
CA2319870C (en) * | 1992-06-15 | 2001-12-04 | Herman Miller, Inc. | Woven fabric membrane for a seating surface |
US5630643A (en) * | 1993-06-01 | 1997-05-20 | Steelcase Inc | Upholstered chair with two-piece shell |
DE4410383C2 (en) * | 1994-03-25 | 1996-07-25 | Desanta | chair |
US5577807A (en) * | 1994-06-09 | 1996-11-26 | Steelcase Inc. | Adjustable chair actuator |
WO1995034233A1 (en) | 1994-06-10 | 1995-12-21 | Haworth, Inc. | Ergonomic chair |
US5810438A (en) * | 1994-06-13 | 1998-09-22 | Herman Miller, Inc. | One piece molded seating structure |
US5486035A (en) * | 1994-08-01 | 1996-01-23 | Koepke; Marcus C. | Occupant weight operated chair |
GB9500022D0 (en) * | 1995-01-04 | 1995-03-01 | Unwalla Jamshed | Integrated seat and back and mechanism for chairs |
US5890763A (en) * | 1996-12-11 | 1999-04-06 | Svein Asbj.o slashed.rnsen Produktdesign AS | Arrangement in a pivotable mounting, especially for a chair |
US5823626A (en) * | 1996-12-30 | 1998-10-20 | Haas; Peter J. | Mechanism for reclining chairs |
KR200154297Y1 (en) * | 1997-04-03 | 1999-08-02 | 한무길 | Chair with elastically-mounted frame |
US5909923A (en) * | 1997-10-24 | 1999-06-08 | Steelcase Inc. | Chair with novel pivot mounts and method of assembly |
USD421540S (en) * | 1999-04-02 | 2000-03-14 | Steelcase Inc. | Chair back |
NZ504871A (en) * | 2000-05-22 | 2002-04-26 | Miller Herman Inc | A chair with a preload mechanism to assist in the manufacture of reclining chairs so that the spring mechanism may be easily inserted |
KR100434997B1 (en) * | 2002-01-02 | 2004-06-09 | 주식회사 일룸 | the back of a chair |
US6779846B2 (en) * | 2002-08-06 | 2004-08-24 | Mity-Lite, Inc. | Chair with flexible, resilient back support |
WO2004089162A2 (en) * | 2003-04-02 | 2004-10-21 | Wells Harold G | Articulated seating mechanism |
CN105832036B (en) | 2005-03-01 | 2019-12-17 | 霍沃思公司 | Seat back with lumbar and pelvic supports |
US7422287B2 (en) | 2005-03-08 | 2008-09-09 | Steelcase Inc. | Seating with shape-changing back support frame |
US20060202536A1 (en) * | 2005-03-09 | 2006-09-14 | Robert Luchetti Associates, Inc. | Chair with self-adjusting chair back |
US8061775B2 (en) * | 2005-06-20 | 2011-11-22 | Humanscale Corporation | Seating apparatus with reclining movement |
USD660056S1 (en) | 2006-06-20 | 2012-05-22 | Humanscale Corporation | Chair |
WO2008026264A1 (en) * | 2006-08-30 | 2008-03-06 | Itoki Corporation | Chair |
EP1992255A1 (en) * | 2007-05-18 | 2008-11-19 | Eckhard Dipl.-Ing. Hansen | Seating |
ITMI20080685A1 (en) * | 2008-04-15 | 2009-10-16 | Unioffice S R L | ERGONOMIC CHAIR |
US7654617B2 (en) * | 2008-06-06 | 2010-02-02 | Mity-Lite, Inc. | Flexible chair seat |
JP2010096325A (en) * | 2008-10-20 | 2010-04-30 | Oki Electric Ind Co Ltd | Damper unit and chair |
US8033598B2 (en) | 2008-12-24 | 2011-10-11 | Mity-Lite, Inc. | Mesh folding chair |
US8454093B2 (en) | 2008-12-24 | 2013-06-04 | Mity-Lite, Inc. | Mesh chair with open-end hoop |
US8322787B2 (en) | 2008-12-24 | 2012-12-04 | Mity-Lite, Inc. | Clamping joint for a chair |
US8317269B2 (en) | 2008-12-24 | 2012-11-27 | Mity-Lite, Inc. | Mesh stacking chair |
USD648554S1 (en) | 2009-11-04 | 2011-11-15 | Mity-Lite, Inc. | Mesh stacking chair |
USD660612S1 (en) | 2010-11-16 | 2012-05-29 | Mity-Lite, Inc. | Mesh banquet chair |
US9211014B2 (en) | 2011-12-08 | 2015-12-15 | Herman Miller, Inc. | Composite body support member and methods for the manufacture and recycling thereof |
US9504326B1 (en) | 2012-04-10 | 2016-11-29 | Humanscale Corporation | Reclining chair |
DE102012013208B4 (en) | 2012-05-07 | 2019-07-25 | Adient Luxembourg Holding S.À R.L. | Seat part of a vehicle seat |
IN2014DN08535A (en) | 2012-05-07 | 2015-05-15 | Johnson Controls Tech Co | |
DE102012208721A1 (en) * | 2012-05-24 | 2013-11-28 | Lufthansa Technik Ag | Airplane seat with a seat assembly |
PL2892390T3 (en) * | 2012-09-05 | 2018-01-31 | Godrej & Boyce Mfg Co Ltd | Chair with adjustable backrest and seat |
EP2908696B2 (en) | 2012-10-18 | 2023-03-15 | Vitra AG | Synchronous seat adjustment |
USD703457S1 (en) | 2013-06-07 | 2014-04-29 | Herman Miller, Inc. | Chair |
DE102013022122A1 (en) * | 2013-12-28 | 2015-07-02 | Klöber GmbH | Work chair with synchronous mechanism and spiral spring |
DE202014100062U1 (en) * | 2014-01-08 | 2015-04-10 | Innotec Motion GmbH | Seating furniture with springy backrest |
EP3244777B1 (en) | 2015-01-16 | 2020-09-30 | Herman Miller, Inc. | A method of making a suspension member |
US10966527B2 (en) | 2017-06-09 | 2021-04-06 | Steelcase Inc. | Seating arrangement and method of construction |
US11259637B2 (en) | 2015-04-13 | 2022-03-01 | Steelcase Inc. | Seating arrangement |
MX2017013130A (en) | 2015-04-13 | 2018-03-07 | Steelcase Inc | Seating arrangement. |
US9713381B2 (en) | 2015-06-11 | 2017-07-25 | Davis Furniture Industries, Inc. | Chair |
US11589678B2 (en) | 2019-01-17 | 2023-02-28 | Hni Technologies Inc. | Chairs including flexible frames |
CN113507865A (en) | 2019-02-21 | 2021-10-15 | 斯特尔凯斯公司 | Body support assembly and methods for use and assembly thereof |
US11357329B2 (en) | 2019-12-13 | 2022-06-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
WO2021178206A1 (en) | 2020-03-02 | 2021-09-10 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
WO2022173799A1 (en) | 2021-02-10 | 2022-08-18 | Steelcase Inc. | Body support structure |
DE202022103278U1 (en) | 2022-06-10 | 2023-09-20 | Armin Sander | Seating furniture |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7721954U1 (en) * | 1977-07-13 | 1977-10-13 | Wilkhahn Wilkening + Hahne, 3252 Bad Muender | Seating furniture, in particular chairs |
DE7815561U1 (en) * | 1978-05-24 | 1978-09-14 | Martin Stoll Giroflex Gmbh, 7897 Tiengen |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US868052A (en) * | 1905-12-21 | 1907-10-15 | John F Wilmot | Adjustable reclining-chair. |
US1789337A (en) * | 1929-01-24 | 1931-01-20 | Floral City Furniture Company | Reclining chair |
US2365200A (en) * | 1942-03-16 | 1944-12-19 | Lorenz Anton | Adjustable chair |
GB611651A (en) * | 1946-05-02 | 1948-11-02 | Maximilian Heller | Adjustable chair or the like |
FR1216435A (en) * | 1958-11-25 | 1960-04-25 | Grosfillex Freres | Shaped article of plastics suitable for use in particular as a removable seat and backrest for chairs and the like |
US3140118A (en) * | 1961-07-03 | 1964-07-07 | Pacific Car & Foundry Co | Seat for cab of automotive truck |
US3133765A (en) * | 1962-08-30 | 1964-05-19 | Ion Corp | Chair |
US3317241A (en) * | 1966-04-18 | 1967-05-02 | David E Pace | Reclining chair |
US3387887A (en) * | 1966-06-09 | 1968-06-11 | Schlumberger Ltd | Chair |
DE2222840C2 (en) * | 1972-05-10 | 1984-05-17 | Baresel-Bofinger, Rudolf, 7129 Ilsfeld | chair |
CH636252A5 (en) * | 1978-10-20 | 1983-05-31 | Syntech Sa | ERGONOMIC CHAIR. |
-
1980
- 1980-10-01 DE DE19803036993 patent/DE3036993A1/en not_active Withdrawn
- 1980-12-22 EP EP80108111A patent/EP0049310B1/en not_active Expired
- 1980-12-22 DE DE8080108111T patent/DE3070356D1/en not_active Expired
- 1980-12-22 AT AT80108111T patent/ATE12169T1/en not_active IP Right Cessation
-
1981
- 1981-03-17 US US06/244,679 patent/US4451085A/en not_active Expired - Lifetime
- 1981-03-24 AU AU68665/81A patent/AU542582B2/en not_active Expired
- 1981-04-07 ES ES1981267165U patent/ES267165Y/en not_active Expired
- 1981-04-30 CA CA000376626A patent/CA1156923A/en not_active Expired
- 1981-05-04 BR BR8102728A patent/BR8102728A/en not_active IP Right Cessation
- 1981-05-15 JP JP56072374A patent/JPS5764014A/en active Granted
- 1981-06-23 AR AR285816A patent/AR227548A1/en active
- 1981-06-25 ZA ZA814319A patent/ZA814319B/en unknown
- 1981-09-28 MX MX189375A patent/MX152858A/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7721954U1 (en) * | 1977-07-13 | 1977-10-13 | Wilkhahn Wilkening + Hahne, 3252 Bad Muender | Seating furniture, in particular chairs |
DE7815561U1 (en) * | 1978-05-24 | 1978-09-14 | Martin Stoll Giroflex Gmbh, 7897 Tiengen |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8967726B2 (en) | 2007-09-20 | 2015-03-03 | Herman Miller, Inc. | Load support structure |
DE102011105290A1 (en) | 2010-06-15 | 2011-12-15 | Claudia Plikat | "Chair" |
WO2011157392A1 (en) | 2010-06-15 | 2011-12-22 | Claudia Plikat | Chair |
US11553797B2 (en) | 2015-04-13 | 2023-01-17 | Steelcase Inc. | Seating arrangement |
Also Published As
Publication number | Publication date |
---|---|
ZA814319B (en) | 1982-07-28 |
AU6866581A (en) | 1982-04-22 |
US4451085A (en) | 1984-05-29 |
CA1156923A (en) | 1983-11-15 |
MX152858A (en) | 1986-06-23 |
ES267165U (en) | 1983-03-16 |
ATE12169T1 (en) | 1985-04-15 |
ES267165Y (en) | 1983-10-16 |
DE3070356D1 (en) | 1985-04-25 |
JPS6348529B2 (en) | 1988-09-29 |
EP0049310A1 (en) | 1982-04-14 |
BR8102728A (en) | 1982-08-17 |
AU542582B2 (en) | 1985-02-28 |
AR227548A1 (en) | 1982-11-15 |
DE3036993A1 (en) | 1982-05-13 |
JPS5764014A (en) | 1982-04-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0049310B1 (en) | Working chair | |
DE69327734T2 (en) | CHAIR WITH DIVIDED BACKREST | |
DE3632131C2 (en) | Functional seating | |
DE3027311C2 (en) | ||
EP0827704B1 (en) | Seating furniture with synchronised seat and backrest | |
DE3415555C2 (en) | ||
DE3537028C2 (en) | chair | |
DE2820063A1 (en) | CHAIR | |
DE2360165A1 (en) | SEAT FURNITURE WITH SWIVELING BACKREST | |
DE202007007524U1 (en) | Backrest for a chair or armchair and chair or armchair equipped with such a backrest | |
DE4210134A1 (en) | Active dynamic seat device | |
DE4135162A1 (en) | CONNECTING DEVICE FOR SUPPORTING THE SEAT AND BACKREST OF A CHAIR | |
AT12867U1 (en) | seating | |
DE1294618B (en) | Adjustable rocking chair | |
DE7815561U1 (en) | ||
EP2000056A1 (en) | Flexible backrest for a work chair | |
DE2000172C3 (en) | Chair, especially work chair | |
EP0820713A2 (en) | Ergonomic chair | |
DE2438295A1 (en) | Chair with independently adjustable seat and backrest - has articulated joint mounted between two movable parts near horizontal axle | |
CH558158A (en) | Office chair with angular adjustment of back support - adjusts seat simultaneously with angle of back support | |
DE3634055A1 (en) | SEAT FURNITURE | |
EP0669816B1 (en) | Chair, especially office chair | |
DE2651843A1 (en) | Chair with shaped seat and adjustable backrest - has articulated joints between backrest sections allowing firm support of pelvis | |
DE7630781U1 (en) | CHAIR, ARMCHAIR OR THE SAME FURNITURE | |
DE4333219A1 (en) | Tilting chair |
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 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT NL SE |
|
17P | Request for examination filed |
Effective date: 19820525 |
|
ITF | It: translation for a ep patent filed | ||
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI NL SE |
|
REF | Corresponds to: |
Ref document number: 12169 Country of ref document: AT Date of ref document: 19850415 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 3070356 Country of ref document: DE Date of ref document: 19850425 |
|
ET | Fr: translation filed | ||
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 | ||
ITTA | It: last paid annual fee | ||
EAL | Se: european patent in force in sweden |
Ref document number: 80108111.8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19991111 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19991112 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19991117 Year of fee payment: 20 Ref country code: CH Payment date: 19991117 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19991118 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19991122 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19991208 Year of fee payment: 20 |
|
BE20 | Be: patent expired |
Free format text: 20001222 *WILKHAHN WILKENING + HAHNE G.M.B.H. + CO. |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20000225 Year of fee payment: 20 |
|
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 EXPIRATION OF PROTECTION Effective date: 20001221 Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20001221 Ref country code: CH Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20001221 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20001222 Ref country code: AT Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20001222 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 20001230 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 Effective date: 20001221 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
EUG | Se: european patent has lapsed |
Ref document number: 80108111.8 |
|
NLV7 | Nl: ceased due to reaching the maximum lifetime of a patent |
Effective date: 20001222 |