EP1447029A1 - Backrest - Google Patents
Backrest Download PDFInfo
- Publication number
- EP1447029A1 EP1447029A1 EP03003522A EP03003522A EP1447029A1 EP 1447029 A1 EP1447029 A1 EP 1447029A1 EP 03003522 A EP03003522 A EP 03003522A EP 03003522 A EP03003522 A EP 03003522A EP 1447029 A1 EP1447029 A1 EP 1447029A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- backrest
- support
- frame
- side parts
- backrest according
- 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
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 208000007623 Lordosis Diseases 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 210000004705 lumbosacral region Anatomy 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 210000002414 leg Anatomy 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 210000000689 upper leg Anatomy 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
- A47C5/00—Chairs of special materials
- A47C5/12—Chairs of special materials of plastics, with or without reinforcement
-
- 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—Supports for the head or the back
- A47C7/38—Supports for the head or the back for the head, e.g. detachable
Definitions
- the invention relates to the field of seating, in particular a backrest for an office chair in which a membrane is stretched in a frame is.
- a chair of the type described is e.g. known from EP 0308538 A.
- the gimbal is achieved in that the backrest has a spherical segment-shaped formation, which in a second spherical segment shape is mounted on the backrest support.
- the center point around which the backrest can move is on the upholstery surface.
- This well-known chair offers excellent seating comfort, conditionally but some effort in its manufacture.
- Another chair with a gimbal backrest is known from EP 0935934 A.
- the gimbal is there by means of a circular cylindrical rubber-elastic element reached, on its two A steel plate is vulcanized on the end faces, which is connected to the backrest or the Backrest support is connected by screws.
- the user can use it Move the backrest against the spring forces of the rubber-elastic element.
- the backrest support can be moved backwards against a return spring be pressed.
- the cushion is basically rigid on its user interface executed and kinked in the area of the rubber bearing.
- This known chair has the advantage that the gimbal bearing less Includes individual parts, and is therefore cheaper to manufacture.
- optimal support of the back of the user is not achieved:
- the Linking the backrest support to the chair column and connecting to a Return spring very complex and therefore inexpensive.
- the rubber-elastic bearing offers no tear-off protection: if the plates vulcanized to the rubber-elastic element should come loose, the backrest falls off the backrest support.
- Bei this chair is the backrest as a frame with one stretched in it Membrane formed.
- the frame consists of two essentially vertical trending side panels, and an upper and a lower, the two Crosspiece connecting side parts.
- the frame is over on the lower crosspiece a dorsokinetically flexible joint on the upper part of a backrest support suspended, which is made of aluminum and with its fork-shaped lower Part is hinged to the tilt mechanism.
- this chair offers a very high level of seating comfort, it is also relatively expensive to manufacture, and can also in terms of dorsokinetic support of the lumbar spine lordosis further optimized become.
- the essence of the invention is the idea of the frame with the backrest support to be connected in one piece, i.e. frame and backrest support as a one-piece component perform.
- This component should preferably be an injection molded part from a glass fiber reinforced polyamide plastic, preferably a polyarylamide, be, and. manufactured by gas injection technology (GIT), whereby largely hollow parts can be made.
- GIT gas injection technology
- the membrane provides optimal support for the back of the user lets unfold, but on the other hand in an elegant way and technically inexpensive and stable a cardano-elastic connection between the backrest and backrest support causes.
- the invention also makes it possible to use the backrest together with the backrest support Form visible part, i.e. without special cladding, which is not just the number the individual parts and thus the manufacturing effort, but also reduced design and realizes a high recognition value.
- the number of structural elements of the backrest according to the invention is reduced to a minimum, thus reducing production costs.
- a very low weight is achieved.
- the backrest according to the invention still has a whole particularly high level of stability, because one under the influence of violence
- the backrest is torn off the carrier because of the one-piece Execution obviously no longer possible.
- the invention Backrest with the chosen dimensions and the chosen plastic very high rigidity and resistance to mechanical stress.
- a backrest according to the invention is shown, the Frame 1, the backrest support 6, and the neck support 15 comprises.
- the frame 1 consists of the left side part 2 and the right side part 3. These two side parts 2, 3 are connected to one another via the lower crosspiece 4 and the upper crossbar 5 connected.
- the side parts 2, 3 have a groove 26 on the outside, into which a groove is formed elastic fabric (not shown) with its membrane the side edges are clipped on.
- web-shaped holders 16, 17 are molded onto the side parts 2, 3 provided, in which a band is clipped as a special lordosis support can.
- the backrest support 6 comprises the left leg 7 and the right leg 8, which converge in the fork 18 in the connector.
- the connector 18 runs smoothly and seamlessly into the lower crosspiece 4.
- the legs have 7.8 bearing blocks 9, 10, on which the rear part of the (not shown) seat plate is stored.
- the legs 7, 8 are at the very front Recesses 22 in which metallic fittings 11, 12 are inserted and be screwed tight.
- these fittings 11, 12 the backrest support 6 hinged to the (not shown) tilt mechanism of the chair.
- one such tilt mechanism can, for example, that in DE 196 40 564 A Mechanics described with synchronous control of seat and backrest used become.
- the upper crossbar 5 In the middle of the upper crossbar 5 is a metallic by means of screws Fitting 13 attached to a bearing 14 for the neck support 15.
- a bearing 14 for the neck support 15 In the camp 14 is pivotable on the sleeve 19 via the complementary bearing part 23 Neck support 15 mounted.
- the swiveling is to a predetermined extent caused by the sliding block 24, which is in the suitably shaped inner part of the Bearing 23 can move.
- the screw 27 standing disc springs 25 By means of the screw 27 standing disc springs 25, a friction force is generated on the bearing 23, which it allows the headrest to pivot, but then is fixed in a desired position.
- the headrest 15 can be adjusted in height can be adjusted by moving the rod 20 in the sleeve 19.
- On the The support plate 21 is attached to the head cushion (not shown).
- the plastic molded parts of the backrest are largely hollow. Only in the middle Part of the upper crosspiece 5 and in the lower parts of the two legs 7,8 the backrest support 6, the molding compound is compact. This is useful so that Screws for the fittings 11, 12 and 13 have a firm hold.
- the backrest according to the invention described here is the one produced by the user Leaning force not only absorbed by the backrest frame, but also by the one-piece molded backrest support. That increases the dorsokinetic Support function of the backrest in an advantageous manner.
- the plastic mass used is a glass fiber reinforced thermoplastic.
- Resin based on polyarylamide preferably that of the IXEF brand 1022 or 1032 from Solvay S.A. expelled material.
- the molded parts are manufactured by gas injection technology (GIT), whereby the melted molding compound through a high pressure into the cavity of the Injection gas injected inert gas, preferably nitrogen, to the Mold wall is displaced.
- GIT gas injection technology
- the manufacture of the backrest including the molded back support can be seen about the injection molding technique described in the production of large quantities invaluable in terms of manufacturing and assembly costs.
- the Backrest according to the invention provides excellent seating comfort by optimally supporting the Back, is significantly reduced compared to the prior art Manufacturing, transporting, and motivating effort, and offers from industrial design forth a high aesthetics and creative memorability.
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
- Chairs Characterized By Structure (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Die Erfindung betrifft das Gebiet der Sitzmöbel, insbesondere eine Rückenlehne für einen Büro-Stuhl, bei welchem in einem Rahmen eine Membran aufgespannt ist.The invention relates to the field of seating, in particular a backrest for an office chair in which a membrane is stretched in a frame is.
Es ist bekannt, bei Bürostühlen die Lehne an den Lehnenträger derart anzubinden, dass sie möglichst allen Bewegungen des Rückens des Benutzers zu folgen vermag. Technisch heißt das, dass die Lehne kardanisch gelagert, also um die drei Raumachsen beweglich ist. Damit kann sie sagittalen Bewegungen des Rückens , also Bewegungen um eine Horizontalachse parallel zum Körper, aber auch Torsionsbewegungen und Transveralbewegungen, also Bewegungen um die Vertikalachse bzw. um eine Horizontalachse senkrecht zum Körper, folgen. Derartige kombinierte Oberkörperbewegungen in drei Richtungen kommen in der Praxis sehr häufig vor, zum Beispiel beim Griff seitlich unten in die Schublade eines Schreibtisches, oder beim Hinwenden zu einem Gesprächspartner. Kardanische Lager für Lehnen bei Stühlen werden auch als "dorsokinetisch flexible Gelenke" bezeichnet. It is known, in the case of office chairs, to have the backrest on the backrest support in this way to tie up as much as possible all movements of the user's back is able to follow. Technically, this means that the backrest is gimbal-mounted, that is around the three spatial axes. It can do sagittal movements of the back, i.e. movements around a horizontal axis parallel to the body, but also torsional movements and transversal movements, i.e. movements about the vertical axis or about a horizontal axis perpendicular to the body, consequences. Such combined upper body movements in three directions occur very often in practice, for example with the handle on the side at the bottom Drawer of a desk, or when turning to one Interlocutor. Cardanic bearings for armrests are also called called "dorsokinetically flexible joints".
Ein Stuhl der geschilderten Art ist z.B. aus EP 0308538 A bekannt. Bei diesem bekannten Stuhl wird die kardanische Lagerung dadurch erreicht, dass die Lehne eine kugelsegmentförmige Ausformung aufweist, die in einer zweiten kugelsegmentförmigen Ausformung am Lehnenträger gelagert ist. Der Mittelpunkt, um den sich die Lehne bewegen kann, liegt an der Polsteroberfläche. Seitlich und oberhalb und unterhalb des Kardangelenkes sind Federelemente zwischen Lehne und Lehnenträger vorgesehen, z. B. elastische Polyester-Elemente, die Federkräfte sowohl senkrecht als auch parallel zur Lehnenfläche ausüben.A chair of the type described is e.g. known from EP 0308538 A. With this known chair, the gimbal is achieved in that the backrest has a spherical segment-shaped formation, which in a second spherical segment shape is mounted on the backrest support. The The center point around which the backrest can move is on the upholstery surface. There are spring elements on the sides and above and below the universal joint provided between the backrest and backrest support, for. B. elastic polyester elements, the spring forces both perpendicular and parallel to the backrest surface exercise.
Dieser bekannte Stuhl bietet zwar einen hervorragenden Sitzkomfort, bedingt aber einen gewissen Aufwand bei seiner Herstellung.This well-known chair offers excellent seating comfort, conditionally but some effort in its manufacture.
Ein anderer Stuhl mit kardanisch gelagerter Lehne ist bekannt aus EP 0935934 A. Die kardanische Lagerung wird dort mittels eines kreiszylindrischen gummielastischen Elementes erreicht, an dessen zwei Stirnseiten jeweils eine Stahlplatte anvulkanisiert ist, die mit der Lehne bzw. dem Lehnenträger durch Schrauben verbunden ist. Der Benutzer kann damit die Lehne gegen die Federkräfte des gummielastischen Elementes bewegen. Zusätzlich kann noch der Lehnenträger gegen eine Rückholfeder nach hinten gedrückt werden. An seiner Benutzeroberfläche ist das Polster prinzipiell steif ausgeführt und im Bereich des Gummilagers geknickt.Another chair with a gimbal backrest is known from EP 0935934 A. The gimbal is there by means of a circular cylindrical rubber-elastic element reached, on its two A steel plate is vulcanized on the end faces, which is connected to the backrest or the Backrest support is connected by screws. The user can use it Move the backrest against the spring forces of the rubber-elastic element. In addition, the backrest support can be moved backwards against a return spring be pressed. The cushion is basically rigid on its user interface executed and kinked in the area of the rubber bearing.
Dieser bekannte Stuhl ,weist zwar den Vorteil auf, dass das Kardanlager weniger Einzelteile umfasst, und damit kostengünstiger herstellbar ist. Durch die konventionelle Gestaltung der Benutzeroberfläche des Lehnenpolsters wird aber keine optimale Stützung des Rückens des Benutzers erzielt: Ferner ist auch die Anlenkung des Lehnenträgers an der Stuhlsäule und die Anbindung an eine Rückholfeder sehr aufwendig und damit kostenungünstig. Schließlich ist es auch nachteilig, dass das gummielastische Lager keinen Abreißschutz bietet: wenn sich die an das gummielastische Element anvulkanisierten Platten lösen sollten, fällt die Lehne vom Lehnenträger ab. This known chair has the advantage that the gimbal bearing less Includes individual parts, and is therefore cheaper to manufacture. Through the conventional design of the user interface of the backrest cushion optimal support of the back of the user is not achieved: Furthermore, the Linking the backrest support to the chair column and connecting to a Return spring very complex and therefore inexpensive. After all, it is disadvantageous that the rubber-elastic bearing offers no tear-off protection: if the plates vulcanized to the rubber-elastic element should come loose, the backrest falls off the backrest support.
Ein anderer Stuhl der genannten Art ist bekannt aus DE 100 48 779 A1: Bei diesem Stuhl ist die Rückenlehne als Rahmen mit einer darin aufgespannten Membran ausgebildet. Der Rahmen besteht aus zwei im wesentlichen vertikal verlaufenden Seitenteilen, und einem oberen und einem unteren, die beiden Seitenteile verbindenden Quersteg. Am unteren Quersteg ist der Rahmen über ein dorsokinetisch flexibles Gelenk am oberen Teil eines Lehnenträgers aufgehängt, der aus Aluminium besteht und mit seinem gabelförmigen unteren Teil an der Neigungsmechanik angelenkt ist.Another chair of the type mentioned is known from DE 100 48 779 A1: Bei this chair is the backrest as a frame with one stretched in it Membrane formed. The frame consists of two essentially vertical trending side panels, and an upper and a lower, the two Crosspiece connecting side parts. The frame is over on the lower crosspiece a dorsokinetically flexible joint on the upper part of a backrest support suspended, which is made of aluminum and with its fork-shaped lower Part is hinged to the tilt mechanism.
Obwohl dieser Stuhl ein sehr hohes Maß an Sitzkomfort bietet, ist auch er herstellungstechnisch relativ aufwendig, und kann auch hinsichtlich der dorsokinetischen Abstützung der Lendenwirbel-Lordose noch weiter optimiert werden.Although this chair offers a very high level of seating comfort, it is also relatively expensive to manufacture, and can also in terms of dorsokinetic support of the lumbar spine lordosis further optimized become.
Es ist daher die Aufgabe der Erfindung, eine Rückenlehne der in DE 100 48 779 A1 beschriebenen Art derart weiterzubilden, dass sie einerseits dem Rücken des Benutzers bei allen möglichen Bewegungen, sei es sagittal, transversal oder tordierend, optimale Stützung bietet, andererseits aber dennoch kostengünstig herstellbar ist, insbesondere für große Stückzahlen ein Minimum an Herstellungsaufwand erfordert. Dennoch soll aber selbstverständlich auch eine hohe Stabilität der Konstruktion im robusten Alltagsbetrieb gewährleistet sein. Schließlich soll die erfindungsgemäße Rückenlehne auch ästhetisch, unter den Kriterien des industriellen Designs, eine optimale Lösung darstellen.It is therefore the object of the invention to provide a backrest in DE 100 48 779 A1 described type in such a way that they on the one hand the user's back in all possible movements, be it sagittal, transversal or twisting, provides optimal support, but on the other hand nevertheless is inexpensive to manufacture, especially for large quantities, a minimum requires manufacturing effort. Nevertheless, of course, should also a high stability of the construction in robust everyday operation is guaranteed his. Finally, the backrest according to the invention should also be aesthetically pleasing the criteria of industrial design, represent an optimal solution.
Diese Aufgabe wird durch die Merkmale des Anspruchs 1 und der Unteransprüche gelöst.This object is achieved by the features of claim 1 and Subclaims resolved.
Der Kern der Erfindung ist die Idee, den Rahmen mit dem Lehnenträger einstückig zu verbinden, also Rahmen und Lehnenträger als einstückiges Bauteil auszuführen. Vorzugsweise soll dieses Bauteil ein Spritzgussteil aus einem glasfaserverstärkten Polyamid-Kunststoff, vorzugsweise einem Polyarylamid, sein, und.durch Gas-Injektionstechnik (GIT) hergestellt werden, wodurch sich weitgehend hohle Einzelteile herstellen lassen.The essence of the invention is the idea of the frame with the backrest support to be connected in one piece, i.e. frame and backrest support as a one-piece component perform. This component should preferably be an injection molded part from a glass fiber reinforced polyamide plastic, preferably a polyarylamide, be, and. manufactured by gas injection technology (GIT), whereby largely hollow parts can be made.
Mit der erfindungsgemäßen Konstruktion wird erreicht, dass die Rückenlehne einerseits die Membran optimale Stützungskräfte für den Rücken des Benutzers entfalten lässt, andererseits aber in eleganter Weise und technisch kostengünstig und stabil eine kardano-elastische Verbindung zwischen Lehne und Lehnenträger bewirkt.With the construction according to the invention it is achieved that the backrest on the one hand, the membrane provides optimal support for the back of the user lets unfold, but on the other hand in an elegant way and technically inexpensive and stable a cardano-elastic connection between the backrest and backrest support causes.
Die Erfindung macht es auch möglich, die Rückenlehne samt Lehnenträger als Sichtteil, also ohne besondere Verkleidung, auszubilden, was nicht nur die Zahl der Einzelteile und damit den Herstellaufwand reduziert, sondern auch gestalterisch prägt und einen hohen Wiedererkennungswert realisiert.The invention also makes it possible to use the backrest together with the backrest support Form visible part, i.e. without special cladding, which is not just the number the individual parts and thus the manufacturing effort, but also reduced design and realizes a high recognition value.
Auch die Zahl der konstruktiven Elemente der erfindungsgemäßen Rückenlehne ist auf ein Minimum reduziert, und drückt damit den Herstellaufwand. Durch die weitgehend hohlen Kunststoffteile wird ein sehr niedriges Gewicht erzielt. Dabei verfügt die erfindungsgemäße Rückenlehne aber dennoch über ein ganz besonders hohes Maß an Stabillität, denn ein unter Gewalteinwirkung erfolgendes Abreißen der Lehne vom Träger ist wegen der einstückigen Ausführung ersichtlich nicht mehr möglich. Ferner verfügt die erfindungsgemäße Rückenlehne bei der gewählten Dimensionierung und dem gewählten Kunststoff über eine sehr hohe Steifigkeit und Widerstandsfähigkeit gegenüber mechanischer Beanspruchung.The number of structural elements of the backrest according to the invention is reduced to a minimum, thus reducing production costs. Through the largely hollow plastic parts, a very low weight is achieved. there the backrest according to the invention still has a whole particularly high level of stability, because one under the influence of violence The backrest is torn off the carrier because of the one-piece Execution obviously no longer possible. Furthermore, the invention Backrest with the chosen dimensions and the chosen plastic very high rigidity and resistance to mechanical stress.
Gegenüber der dorsokinetisch flexiblen Aufhängung der Lehne an einem Aluminiumträger hat die erfindungsgemäße Rückenlehne den weiteren Vorteil, dass ergonomisch erwünschte elastische Abstützungskräfte für den Rücken des Benutzers auch vom Lehnenträger beigesteuert werden, während der Aluminiumträger starr ist. Compared to the dorsokinetically flexible suspension of the backrest on one Aluminum backing has the further advantage of the backrest according to the invention, that ergonomically desired elastic support forces for the back of the Users also contribute from the backrest support during the Aluminum beam is rigid.
Nachstehend wird die Erfindung anhand eines in Zeichnungen dargestellten Ausführungsbeispiels näher erläutert. Dabei zeigt:
- Fig.1
- die perspektivische Ansicht von vorn einer Rückenlehne nach der Erfindung mit zusammengebautem Lager für die Nackenstütze,
- Fig.2
- die gleiche Ansicht wie Fig.1, jedoch mit der Anbindung der Nackenstütze in Explosionsdarstellung, und
- Fig.3
- eine Seitenansicht der in Figuren 1 und 2 dargestellten Rückenlehne.
- Fig.1
- the perspective view from the front of a backrest according to the invention with an assembled bearing for the neck support,
- Fig.2
- the same view as Figure 1, but with the connection of the neck support in an exploded view, and
- Figure 3
- a side view of the backrest shown in Figures 1 and 2.
In den Figuren ist eine erfindungsgemäße Rückenlehne dargestellt, die den
Rahmen 1, den Lehnenträger 6, und die Nackenstütze 15 umfasst.In the figures, a backrest according to the invention is shown, the
Frame 1, the backrest support 6, and the
Der Rahmen 1 besteht aus dem linken Seitenteil 2 und dem rechten Seitenteil 3.
Diese beiden Seitenteile 2,3 sind miteinander über den unteren Quersteg 4 und
den oberen Quersteg 5 verbunden.The frame 1 consists of the
Die Seitenteile 2,3 weisen außen eine Rille 26 auf, in welche eine aus einem
elastischen Gewebe bestehende (nicht gezeichnete) Membran mit ihren
kederumfassten Seitenkanten eingeclipst wird.The
Ferner sind an den Seitenteilen 2,3 angespritzte stegförmige Halter 16,17
vorgesehen, in welche ein Band als besondere Lordosestütze eingeclipst werden
kann.Furthermore, web-
Der Lehnenträger 6 umfasst den linken Schenkel 7 und den rechten Schenkel 8,
die gabelförmig im Verbindungsstück 18 zusammenlaufen. Das Verbindungsstück
18 läuft glatt und übergangslos in den unteren Quersteg 4 ein.The backrest support 6 comprises the
Vorn weisen die Schenkel 7,8 Lagerböcke 9,10 auf, an denen der hintere Teil der
(nicht gezeichneten) Sitzplatte gelagert wird. Ganz vorn weisen die Schenkel 7,8
Aussparungen 22 auf, in denen metallische Beschläge 11,12 eingesetzt und
festgeschraubt werden. Mittels dieser Beschläge 11,12 wird der Lehnenträger 6
an der (nicht gezeichneten) Neigungsmechanik des Stuhles angelenkt. Als eine
solche Neigungsmechanik kann zum Beispiel die in DE 196 40 564 A
beschriebene Mechanik mit Synchronsteuerung von Sitz und Lehne verwendet
werden.At the front, the legs have 7.8 bearing
In der Mitte des oberen Querstegs 5 ist mittels Schrauben ein metallischer
Beschlag 13 mit einem Lager 14 für die Nackenstütze 15 befestigt. In dem Lager
14 ist über das komplementäre Lagerteil 23 an der Hülse 19 schwenkbar die
Nackenstütze 15 gelagert. Die Schwenkbarkeit in vorgegebenem Maße wird
durch den Kulissenstein 24 bewirkt, der sich im geeignet geformten Innenteil des
Lagers 23 bewegen kann. Mittels der unter der Wirkung der Schraube 27
stehenden Tellerfedern 25 wird auf dem Lager 23 eine Reibkraft erzeugt, welche
es ermöglicht, dass die Nackenstütze zwar geschwenkt werden kann, aber dann
in einer gewünschten Stellung feststeht. In der Höhe kann die Nackenstütze 15
durch Bewegen des Stabes 20 in der Hülse 19 verstellt werden. Auf der
Trageplatte 21 wird das (nicht gezeichnete) Kopfpolster befestigt.In the middle of the
Die Kunststoff-Formteile der Rückenlehne sind weitgehend hohl. Nur im mittleren
Teil des oberen Querstegs 5 und in den unteren Teilen der beiden Schenkel 7,8
des Lehnenträgers 6 ist die Formmasse kompakt. Das ist zweckmäßig, damit die
Schrauben für die Beschläge 11,12 und 13 einen festen Halt haben.The plastic molded parts of the backrest are largely hollow. Only in the middle
Part of the
Im Gegensatz zu der aus DE 100 48 779 A1 bekannten Rückenlehne wird bei der hier beschriebenen, erfindungsgemäßen Lehne die vom Benutzer erzeugte Anlehnkraft nicht nur vom Lehnen-Rahmen aufgenommen, sondern auch vom einstückig angeformten Lehnenträger. Das erhöht die dorsokinetische Stützfunktion der Lehne in vorteilhafter Weise.In contrast to the backrest known from DE 100 48 779 A1, the The backrest according to the invention described here is the one produced by the user Leaning force not only absorbed by the backrest frame, but also by the one-piece molded backrest support. That increases the dorsokinetic Support function of the backrest in an advantageous manner.
Die verwendete Kunststoffmasse ist ein glasfaserverstärktes thermoplastisches. Harz auf der Basis von Polyarylamid, vorzugsweise das unter der Marke IXEF 1022 oder 1032 von der Firma Solvay S.A. vetriebene Material.The plastic mass used is a glass fiber reinforced thermoplastic. Resin based on polyarylamide, preferably that of the IXEF brand 1022 or 1032 from Solvay S.A. expelled material.
Die Formteile werden durch Gas-Injektionstechnik (GIT) hergestellt, wobei die geschmolzene Formmasse durch ein unter hohem Druck in die Kavität des Spritzwerkzeugs injiziertes inertes Gas, vorzugsweise Stickstoff, an die Formwand verdrängt wird.The molded parts are manufactured by gas injection technology (GIT), whereby the melted molding compound through a high pressure into the cavity of the Injection gas injected inert gas, preferably nitrogen, to the Mold wall is displaced.
Ersichtlich ist die Herstellung der Rückenlehne samt angeformtem Lehnenträger über die beschriebene Spritzgusstechnik bei der Herstellung großer Stückzahlen hinsichtlich Herstellungs- und Montageaufwand von unschätzbarem Wert.The manufacture of the backrest including the molded back support can be seen about the injection molding technique described in the production of large quantities invaluable in terms of manufacturing and assembly costs.
Wie das besprochene Ausführungsbeispiel überzeugend zeigt, weist die Rückenlehne nach der Erfindung die aufgabengemäßen Vorteile vollumfänglich auf: sie bewirkt hervorragenden Sitzkomfort durch optimale Stützung des Rückens, ist mit gegenüber dem Stand der Technik erheblich reduziertem Aufwand herzustellen, zu transportieren, und zu motieren, und bietet vom industriellen Design her eine hohe Ästhetik und gestalterische Einprägbarkeit. As the exemplary embodiment discussed shows convincingly, the Backrest according to the invention, the advantages according to the task in full on: it provides excellent seating comfort by optimally supporting the Back, is significantly reduced compared to the prior art Manufacturing, transporting, and motivating effort, and offers from industrial design forth a high aesthetics and creative memorability.
- 11
- Rahmenframe
- 22
- linkes Seitenteilleft side panel
- 33
- rechtes Seitenteilright side part
- 44
- unterer Quersteglower crossbar
- 55
- oberer Querstegupper crossbar
- 66
- Lehnenträgerbackrest support
- 77
- linker Schenkelleft thigh
- 88th
- rechter Schenkelright leg
- 99
- linker Sitz-Lagerbockleft seat bracket
- 1010
- rechter Sitz-Lagerbockright seat bracket
- 1111
- linker Beschlagleft fitting
- 1212
- rechter Beschlagright fitting
- 1313
- Beschlag für NackenstützeFitting for neck support
- 1414
- Lager für NackenstützeBearings for neck support
- 1515
- Nackenstützeheadrest
- 1616
- linker Steghalterleft web holder
- 1717
- rechter Steghalterright web holder
- 1818
- Verbindungsstückjoint
- 1919
- Hülseshell
- 2020
- StabRod
- 2121
- Trageplattesupport plate
- 2222
- Aussparungrecess
- 2323
- Lager an NackenstützeBearing on neck support
- 2424
- Kulissensteinsliding block
- 2525
- TellerfedernDisc springs
- 2626
- Rille für MembrankederGroove for membrane leather
- 2727
- Schraube für Lager der NackenstützeBolt for the neck support bearing
Claims (8)
Priority Applications (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES03003522T ES2269841T3 (en) | 2003-02-16 | 2003-02-16 | BACK. |
| EP03003522A EP1447029B1 (en) | 2003-02-16 | 2003-02-16 | Backrest |
| AT03003522T ATE336187T1 (en) | 2003-02-16 | 2003-02-16 | BACKREST |
| DE50304649T DE50304649D1 (en) | 2003-02-16 | 2003-02-16 | backrest |
| CA002455046A CA2455046A1 (en) | 2003-02-16 | 2004-01-13 | Backrest |
| US10/759,195 US7147288B2 (en) | 2003-02-16 | 2004-01-20 | Backrest |
| MXPA04000841A MXPA04000841A (en) | 2003-02-16 | 2004-01-27 | Backrest. |
| AU2004200278A AU2004200278B2 (en) | 2003-02-16 | 2004-01-27 | Backrest |
| NZ530857A NZ530857A (en) | 2003-02-16 | 2004-01-29 | Backrest |
| CN200410004183.0A CN100506116C (en) | 2003-02-16 | 2004-02-13 | Backrest |
| CN200420003810.4U CN2749372Y (en) | 2003-02-16 | 2004-02-16 | Backrest |
| HK05101035.0A HK1068526A1 (en) | 2003-02-16 | 2005-02-07 | Backrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03003522A EP1447029B1 (en) | 2003-02-16 | 2003-02-16 | Backrest |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1447029A1 true EP1447029A1 (en) | 2004-08-18 |
| EP1447029B1 EP1447029B1 (en) | 2006-08-16 |
Family
ID=32668993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03003522A Expired - Lifetime EP1447029B1 (en) | 2003-02-16 | 2003-02-16 | Backrest |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US7147288B2 (en) |
| EP (1) | EP1447029B1 (en) |
| CN (2) | CN100506116C (en) |
| AT (1) | ATE336187T1 (en) |
| AU (1) | AU2004200278B2 (en) |
| CA (1) | CA2455046A1 (en) |
| DE (1) | DE50304649D1 (en) |
| ES (1) | ES2269841T3 (en) |
| HK (1) | HK1068526A1 (en) |
| MX (1) | MXPA04000841A (en) |
| NZ (1) | NZ530857A (en) |
Cited By (11)
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|---|---|---|---|---|
| US4925769A (en) * | 1988-03-17 | 1990-05-15 | Basf Aktiengesellschaft | Light-sensitive photopolymerizable laminate material |
| EP1785067A1 (en) * | 2005-11-11 | 2007-05-16 | Kokuyo Furniture Co., Ltd. | Chair with adjustable backrest |
| EP1785070A1 (en) * | 2005-11-11 | 2007-05-16 | Kokuyo Furniture Co., Ltd. | Chair with flexible backrest |
| JP2007146866A (en) * | 2005-10-27 | 2007-06-14 | Kokuyo Co Ltd | Connection structure of members |
| US7665805B2 (en) | 2005-11-11 | 2010-02-23 | Kokuyo Furniture Co., Ltd. | Chair |
| US10842281B2 (en) | 2012-09-20 | 2020-11-24 | Steelcase Inc. | Control assembly for chair |
| US11109683B2 (en) | 2019-02-21 | 2021-09-07 | Steelcase Inc. | Body support assembly and method for the use and assembly thereof |
| US11229294B2 (en) | 2012-09-20 | 2022-01-25 | Steelcase Inc. | Chair assembly with upholstery covering |
| US11304528B2 (en) | 2012-09-20 | 2022-04-19 | Steelcase Inc. | Chair assembly with upholstery covering |
| US11357329B2 (en) | 2019-12-13 | 2022-06-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
| US12226025B2 (en) | 2024-01-16 | 2025-02-18 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5005167B2 (en) * | 2004-10-13 | 2012-08-22 | 株式会社岡村製作所 | Chair backrest structure |
| KR100756349B1 (en) * | 2006-12-18 | 2007-09-10 | 제일모직주식회사 | Nylon Resin Composites |
| KR100878574B1 (en) * | 2007-12-28 | 2009-01-15 | 제일모직주식회사 | Nylon / Reinforced Fiber Compositions |
| CN101951812B (en) * | 2008-01-16 | 2014-11-12 | 国誉株式会社 | Chair |
| EP2347679B1 (en) * | 2008-10-16 | 2013-03-13 | Okamura Corporation | Chair |
| DE102010009356A1 (en) * | 2010-02-25 | 2011-08-25 | Dr. Ing. h.c. F. Porsche Aktiengesellschaft, 70435 | Seat in a means of transportation |
| FR2971977B1 (en) * | 2011-02-28 | 2013-02-15 | Peugeot Citroen Automobiles Sa | METHOD FOR MAKING A 3D EFFECT SEAT COMPLEX AND ASSOCIATED SEAT |
| DE102011101388B3 (en) * | 2011-05-12 | 2012-11-15 | Stephan Meyer | Seating furniture e.g. office chair, has tilting portion that is formed as separate structure on seat plate to perform tilting movement around pivot point in seat portion |
| JP5945114B2 (en) * | 2011-11-16 | 2016-07-05 | 株式会社イトーキ | Chair and optional items attached to it |
| US10299601B2 (en) * | 2015-09-17 | 2019-05-28 | Sv Tool Corporation | Auto-adjusting headrest for an ergonomic chair |
| JP6109388B2 (en) * | 2016-05-27 | 2017-04-05 | 株式会社イトーキ | Chair |
| CN115674718A (en) * | 2022-10-19 | 2023-02-03 | 连云港神鹰碳纤维自行车有限公司 | Manufacturing method of carbon fiber chair |
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- 2003-02-16 ES ES03003522T patent/ES2269841T3/en not_active Expired - Lifetime
- 2003-02-16 AT AT03003522T patent/ATE336187T1/en active
- 2003-02-16 DE DE50304649T patent/DE50304649D1/en not_active Expired - Lifetime
- 2003-02-16 EP EP03003522A patent/EP1447029B1/en not_active Expired - Lifetime
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- 2004-01-13 CA CA002455046A patent/CA2455046A1/en not_active Abandoned
- 2004-01-20 US US10/759,195 patent/US7147288B2/en not_active Expired - Fee Related
- 2004-01-27 MX MXPA04000841A patent/MXPA04000841A/en active IP Right Grant
- 2004-01-27 AU AU2004200278A patent/AU2004200278B2/en not_active Ceased
- 2004-01-29 NZ NZ530857A patent/NZ530857A/en unknown
- 2004-02-13 CN CN200410004183.0A patent/CN100506116C/en not_active Expired - Fee Related
- 2004-02-16 CN CN200420003810.4U patent/CN2749372Y/en not_active Expired - Lifetime
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- 2005-02-07 HK HK05101035.0A patent/HK1068526A1/en not_active IP Right Cessation
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| US4925769A (en) * | 1988-03-17 | 1990-05-15 | Basf Aktiengesellschaft | Light-sensitive photopolymerizable laminate material |
| JP2007146866A (en) * | 2005-10-27 | 2007-06-14 | Kokuyo Co Ltd | Connection structure of members |
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| EP1785070A1 (en) * | 2005-11-11 | 2007-05-16 | Kokuyo Furniture Co., Ltd. | Chair with flexible backrest |
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| US10842281B2 (en) | 2012-09-20 | 2020-11-24 | Steelcase Inc. | Control assembly for chair |
| US11229294B2 (en) | 2012-09-20 | 2022-01-25 | Steelcase Inc. | Chair assembly with upholstery covering |
| US11304528B2 (en) | 2012-09-20 | 2022-04-19 | Steelcase Inc. | Chair assembly with upholstery covering |
| US11109683B2 (en) | 2019-02-21 | 2021-09-07 | Steelcase Inc. | Body support assembly and method for the use and assembly thereof |
| US11602223B2 (en) | 2019-02-21 | 2023-03-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
| US11910934B2 (en) | 2019-02-21 | 2024-02-27 | Steelcase Inc. | Body support assembly and methods for the 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 |
| US11786039B2 (en) | 2019-12-13 | 2023-10-17 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
| US11805913B2 (en) | 2019-12-13 | 2023-11-07 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
| US12161232B2 (en) | 2019-12-13 | 2024-12-10 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
| US12226028B2 (en) | 2022-08-05 | 2025-02-18 | Steelcase Inc. | Chair arm assembly |
| US12226025B2 (en) | 2024-01-16 | 2025-02-18 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2004200278B2 (en) | 2006-09-14 |
| CN1537490A (en) | 2004-10-20 |
| US7147288B2 (en) | 2006-12-12 |
| DE50304649D1 (en) | 2006-09-28 |
| EP1447029B1 (en) | 2006-08-16 |
| CA2455046A1 (en) | 2004-08-16 |
| ATE336187T1 (en) | 2006-09-15 |
| CN2749372Y (en) | 2006-01-04 |
| HK1068526A1 (en) | 2005-04-29 |
| MXPA04000841A (en) | 2004-12-06 |
| AU2004200278A1 (en) | 2004-09-02 |
| ES2269841T3 (en) | 2007-04-01 |
| US20040195899A1 (en) | 2004-10-07 |
| NZ530857A (en) | 2005-02-25 |
| CN100506116C (en) | 2009-07-01 |
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