EP0662795B1 - Seat back with an adjustment device for an elastic element enabling the arch of the back to be adjusted - Google Patents
Seat back with an adjustment device for an elastic element enabling the arch of the back to be adjusted Download PDFInfo
- Publication number
- EP0662795B1 EP0662795B1 EP93919319A EP93919319A EP0662795B1 EP 0662795 B1 EP0662795 B1 EP 0662795B1 EP 93919319 A EP93919319 A EP 93919319A EP 93919319 A EP93919319 A EP 93919319A EP 0662795 B1 EP0662795 B1 EP 0662795B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- back rest
- resilient
- pelvic support
- curving element
- rest 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.)
- Expired - Lifetime
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
- A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means
- A47C7/465—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means by pulling an elastic cable
Definitions
- the invention relates to a backrest of a seat with an adjusting device for an elastic arch element arranged on a frame for adjusting the curvature of the backrest.
- Such adjustable backrests are widely known, for. B. from US-A-5 050 930. All of them are based on the principle of giving the backrest a curvature adapted to the person seated on the seat, so that the person receives ergonomically correct support in the area of the spine.
- Various systems are known with which the curvature can be adjusted from flat to high, but there are also systems in which the position of the curvature apex, which is set to any height from high to flat, can be adjusted upwards or downwards in the longitudinal extent of the seat.
- Backrests with adjustable curvature are also known as lumbar supports.
- a seat with a backrest which has a plurality of plates arranged flexibly connected to one another over the entire height of the backrest by means of straps, each of which is individually arranged manually or automatically by adjusting mechanisms individually assigned to them are, so that the backrest can be given almost any profile.
- This backrest is extremely complicated and very expensive to manufacture and requires a lot of effort to adjust.
- the object of the invention is to improve an adjustable backrest of a seat of the type mentioned in such a way that sufficient support for the back, in particular the pelvis, is also guaranteed directly below the arch region of the backrest, which according to a further object of the invention also has a simple structure has and is therefore inexpensive to manufacture and which is also easily and without special effort adaptable to different users.
- a backrest as shown in FIGS. 1 and 2, has a frame 1 with two cross struts 2 and a guide 3.
- the guide 3 consists of two rods 4 arranged parallel to one another.
- An elastic arch element 5 is arranged on the rods 4.
- the arch element 5 consists of two elastically bendable strips 6 in a parallel arrangement, which are connected to one another by spaced-apart transverse strips 7.
- the strips 6, 7 can consist of metal or any material having any elastic properties - also of a plastic with or without stiffeners.
- the arch element 5 can have a reinforced strip 11.
- the reinforcement strips 11 preferably have bushes 12 which are arranged to be slidable on the bars 4.
- the bushings 12 are preferably connected in an articulated manner to the reinforcement plate 10 or the reinforcement strip 11.
- the exemplary embodiment has a tensioning device 13 with a handwheel 14, which belong to a known and therefore not further explained adjustment device for adjusting the curvature.
- a plate 16 which serves as a pelvic support 17, is fastened with its upper end — in the exemplary embodiment on the reinforcement strip 11.
- the plate 16 can also be attached to the longitudinal and / or transverse strips 6, 7 and flexible to almost rigid be and also consist of a latticework, wherein wings bent forward (not shown) to form a shell in cross section can be provided on both sides. The wings serve as lateral support for the back.
- the plate 16 can be fixed, e.g. B. by welding, gluing or the like. Or exchangeably and / or adjustably fastened, for example by screw connections which are inserted through holes in the strips 6 and / or 7 and the plate 16, these holes also being designed as slots 18 can, whereby an adaptation to different backrest sizes and / or a change in the stiffness characteristic of the plate 16 is possible.
- a central or a plurality of spring elements 19 arranged symmetrically along the lower edge can be provided, which connect to the frame 1, if necessary via intermediate elements such. B. enable the cross struts 2.
- the resilience / expansion - depending on the selected characteristic and the desired properties - of the plate 16 and thus also the pelvic support 17 can be influenced by these spring elements 19.
- the arch element 5 consists of a flexible plate 20, which has parallel cuts on both lateral edges to the cross struts 2, which limit lateral angled or curved wings 22 for lateral support.
- the plate 20 is also slidably arranged on the guide 3 at the upper end, as in the exemplary embodiment according to FIGS. 1 and 2.
- an extension 23 serving as a pelvic support 17.
- the plate 20 and the extension 23 consist of a single part, which allows a particularly simple and therefore inexpensive production.
- a link 24 is articulated, which is connected at its other end to the lower cross strut 2 of the frame 1 in an articulated manner.
- an air bellows (not shown) can also be provided.
- the extension 23 can also be produced separately from the flexible plate 20, which makes it possible to carry out various adaptations to the spring characteristics and different sizes of the backrests in the case of series production of all other parts of the backrest.
- the connection between the flexible plate 20 and a separate extension 23 can be done in any known manner, for example by rivet or screw connections but also by any other connections, for. B. done by plug and clamp connections, which may also allow an exchange of an extension 23 for another, which may be desirable in the event of a change of ownership of a car in the driver's seat.
- the free end of the extension 23 can be supported by a spring element (not shown).
- FIG. 5 shows a preferred exemplary embodiment of an arch element 5 with integrated pelvic support 17, which consists of a single flexible plastic part and can be produced, for example, by punching out a plate or by compression molding.
- the actual curvature part has incisions 21 on both sides, which delimit wings 22.
- the wings 22 can be angled by cold or hot working in an additional operation or at the same time in a manufacturing process by means of compression molding.
- recesses 25 are provided through which the arch properties of the arch element 5 can be influenced.
- the appendix 26 has a closed edge 29 which is firmly connected to the arch element 5 via bridges 30 in the exemplary embodiment. Openings 31 are made in the edge 29 and in the upper edge of the arch element 5, in which openings the cable pull or the sleeve of a Bowden cable arrangement (not shown) for adjusting the curvature of the arch element 5 can be hung. If the distance between the two openings 31 is shortened by the Bowden cable arrangement, the arching element 5 bulges and the projections 28 each connected to the arching element 5 with only one edge emerge with their free ends from the flatness of the appendix 26 and thus form the pelvic support 17 .
- material reinforcements can also be provided (not shown).
- the pelvic support connected to the respective arch element is automatically brought into the correct position, regardless of whether the curvature is set very strongly or very flat. This ensures a simple design on the one hand and on the other hand optimal support - in particular the pelvis - and not only optimal support for the lordosis through the adjustable backrest.
- the arch element 5 and thus also the pelvic support 17 can be arranged on the rods 4 so as to be adjustable in height by means of various known mechanisms.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
Description
Die Erfindung betrifft eine Rückenlehne eines Sitzes mit einer Verstellvorrichtung für ein an einem Rahmen angeordnetes elastisches Wölbelement zur Verstellung der Wölbung der Rückenlehne.The invention relates to a backrest of a seat with an adjusting device for an elastic arch element arranged on a frame for adjusting the curvature of the backrest.
Derartige verstellbare Rückenlehnen sind weit bekannt, so z. B. aus der US-A- 5 050 930. Ihnen allen liegt das Prinzip zugrunde, der Rückenlehne eine der jeweiligen auf dem Sitz Platz nehmenden Person angepaßte Wölbung zu erteilen, so daß die Person eine ergonomisch richtige Unterstützung im Bereich der Wirbelsäule erfährt. Es sind verschiedene Systeme bekannt, mit denen die Wölbung von flach bis hoch eingestellt werden kann, aber es gibt auch Systeme in denen die Lage des beliebig hoch bis flach eingestellten Wölbungsscheitels in der Längserstreckung des Sitzes nach oben oder unten verstellt werden kann. Lehnen mit verstellbarer Wölbung werden auch als Lordosenstützen bezeichnet.Such adjustable backrests are widely known, for. B. from US-A-5 050 930. All of them are based on the principle of giving the backrest a curvature adapted to the person seated on the seat, so that the person receives ergonomically correct support in the area of the spine. Various systems are known with which the curvature can be adjusted from flat to high, but there are also systems in which the position of the curvature apex, which is set to any height from high to flat, can be adjusted upwards or downwards in the longitudinal extent of the seat. Backrests with adjustable curvature are also known as lumbar supports.
Diesen bekannten verstellbaren Lehnen ist gemeinsam, daß insbesondere dann, wenn die Wölbung sehr stark eingestellt ist, unterhalb der Wölbung im Beckenbereich ein freier nicht abgestützter Raum verbleibt, der beim längeren Sitzen dem Sitzenden Probleme verursacht.These known adjustable backrests have in common that, especially when the curvature is set very strongly, a free unsupported space remains underneath the curvature in the pelvic area, which causes problems for the seated person when sitting for prolonged periods.
Aus der US-A- 4 832 400 ist ein Sitz mit einer Rückenlehne mit einer im unteren Bereich der Rückenlehne angeordneten separat verschwenkbaren Hüftstütze bekannt. Aus der US-A- 4 940 284 ist eine entsprechende Hüftstütze bekannt, die vollständig in die Lehne integriert ist. Eine Verstellung der Wölbung der Lehne ist bei diesen Sitzen nicht vorgesehen.From US-A-4 832 400 a seat with a backrest with a separately pivotable hip support arranged in the lower region of the backrest is known. From the A corresponding hip support is known from US-A-4 940 284 which is completely integrated into the backrest. An adjustment of the curvature of the backrest is not provided for in these seats.
Aus der US-A- 4 944 554 ist ein Sitz mit einer Lehne bekannt, die eine Vielzahl über die gesamte Höhe der Lehne übereinander angeordnete durch Bänder miteinander flexibel verbundene Platten aufweist, die jeweils einzeln durch ihnen einzeln zugeordnete Verstellmechanismen von Hand oder automatisch verstellbar angeordnet sind, so daß der Lehne nahezu ein beliebiges Profil erteilt werden kann. Diese Lehne ist äußerst kompliziert und in der Herstellung sehr kostenintensiv und erfordert einen großen Aufwand zur Verstellung.From US-A-4 944 554 a seat with a backrest is known which has a plurality of plates arranged flexibly connected to one another over the entire height of the backrest by means of straps, each of which is individually arranged manually or automatically by adjusting mechanisms individually assigned to them are, so that the backrest can be given almost any profile. This backrest is extremely complicated and very expensive to manufacture and requires a lot of effort to adjust.
Aufgabe der Erfindung ist es, eine verstellbare Rückenlehne eines Sitzes der eingangs genannten Art dahingehend zu verbessern, daß auch unmittelbar unterhalb des Wölbungsbereichs der Lehne eine ausreichende Abstützung des Rückens, insbesondere des Beckens gewährleistet ist, die gemäß einer weiteren Aufgabe der Erfindung auch einen einfachen Aufbau hat und daher kostengünstig herstellbar ist und die auch leicht und ohne besonderen Aufwand an verschiedene Benutzer anpaßbar ist.The object of the invention is to improve an adjustable backrest of a seat of the type mentioned in such a way that sufficient support for the back, in particular the pelvis, is also guaranteed directly below the arch region of the backrest, which according to a further object of the invention also has a simple structure has and is therefore inexpensive to manufacture and which is also easily and without special effort adaptable to different users.
Diese Aufgabe wird durch eine Rückenlehne mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a backrest with the features of claim 1.
Vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.Advantageous embodiments of the invention can be found in the subclaims.
Nachstehend wird die Erfindung anhand von Ausführungsbeispielen unter Bezug auf Zeichnungen näher erläutert. Es zeigt:
- Fig. 1
- eine Rückenlehne mit einer Wölbvorrichtung und einer im Bereich oberhalb des Wölbungsscheitels befestigten Beckenstütze in Draufsicht;
- Fig. 2
- das gleiche wie in Fig. 1 in Seitenansicht;
- Fig. 3
- eine Rückenlehne mit einer Wölbvorrichtung, deren Wölbelement eine als Beckenstütze dienende Verlängerung aufweist;
- Fig. 4
- das gleiche wie in Fig. 3 in Seitenansicht;
- Fig. 5
- ein Wölbelement mit integrierter Beckenstütze aus einer Kunststoffplatte.
- Fig. 1
- a backrest with an arching device and a pelvic support fastened in the area above the arching apex in plan view;
- Fig. 2
- the same as in Figure 1 in side view;
- Fig. 3
- a backrest with an arching device, the arching element of which has an extension serving as a pelvic support;
- Fig. 4
- the same as in Figure 3 in side view;
- Fig. 5
- a arch element with integrated pelvic support made of a plastic plate.
Eine Rückenlehne, wie sie in Fig. 1 und 2 dargestellt ist, weist einen Rahmen 1 mit zwei Querstreben 2 und einer Führung 3 auf. Die Führung 3 besteht aus zwei parallel zueinander angeordneten Stäben 4. Auf den Stäben 4 ist ein elastisches Wölbelement 5 angeordnet. Das Wölbelement 5 besteht im Ausführungsbeispiel gemäß Fig. 1 und 2 aus zwei elastisch biegbaren Streifen 6 in paralleler Anordnung, die durch beabstandete Querstreifen 7 miteinander verbunden sind. Die Streifen 6, 7 können aus Metall oder einem beliebigen elastische Eigenschaften aufweisenden Material - auch aus einem Kunststoff mit oder ohne Versteifungen - bestehen.A backrest, as shown in FIGS. 1 and 2, has a frame 1 with two
Am unteren und/oder oberen Ende 8 bzw. 9 kann das Wölbelement 5 einen verstärkten Streifen 11 aufweisen. Vorzugsweise weisen die Verstärkungsstreifen 11 Buchsen 12 auf, die auf den Stäben 4 gleitbar angeordnet sind. Vorzugsweise sind die Buchsen 12 gelenkig mit der Verstärkungsplatte 10 bzw. dem Verstärkungsstreifen 11 verbunden. Das Ausführungsbeispiel weist eine Spanneinrichtung 13, mit einem Handrad 14 auf, die zu einer bekannten und daher nicht weiter erläuterten Verstellvorrichtung zur Verstellung der Wölbung gehören.At the lower and / or upper end 8 or 9, the
Im Bereich oberhalb des Wölbungsscheitels 15 des Wölbelements 5 ist - im Ausführungsbeispiel am Verstärkungsstreifen 11 - mit ihrem oberen Ende eine Platte 16, die als Beckenstütze 17 dient, befestigt. Die Platte 16 kann auch an den Längs- und/oder Querstreifen 6, 7 befestigt und biegeelastisch bis nahezu steif sein und auch aus einem Gitterwerk bestehen, wobei an beiden Seiten jeweils nach vorn abgebogene Flügel (nicht dargestellt), um im Querschnitt eine Schale zu bilden, vorgesehen sein können. Die Flügel dienen der seitlichen Abstützung des Rückens.In the area above the crown of the
Die Platte 16 kann fest, z. B. durch Schweißung, Klebung o. dgl. oder auswechselbar und/oder verstellbar befestigt sein, beipielsweise durch Schraubverbindungen, die durch Bohrungen in den Streifen 6 und/oder 7 und der Platte 16 gesteckt sind, wobei diese Bohrungen auch als Langlöcher 18 ausgestaltet sein können, wodurch eine Anpassung an verschiedene Lehnengrößen und/oder eine Veränderung der Steifheitscharakteristik der Platte 16 möglich ist.The
Am freien unteren Ende der Platte 16 können eine zentrale oder mehrere symmetrisch längs der unteren Kante verteilt angeordnete Federelemente 19 vorgesehen sein, die eine Verbindung mit dem Rahmen 1, gegebenenfalls über Zwischenelemente z. B. die Querstreben 2 ermöglichen. Durch diese Federelemente 19 kann die Nachgiebigkeit/Ausdehnung - je nach der gewählten Charakteristik und den gewünschten Eigenschaften - der Platte 16 und damit auch der Beckenstütze 17 beeinflußt werden.At the free lower end of the
Bei dem in Fig. 3 und 4 dargestellten Ausführungsbeispiel besteht das Wölbelement 5 aus einer biegeelastischen Platte 20, die an beiden seitlichen Rändern zu den Querstreben 2 parallele Einschnitte 21 aufweist, die seitliche nach vorn abgewinkelte oder gebogene Flügel 22 für die seitliche Abstützung begrenzen. Auch die Platte 20 ist am oberen Ende wie beim Ausführungsbeispiel gemäß Fig. 1 und 2 gleitend auf der Führung 3 angeordnet. Am unteren Ende der Platte 20 ist eine als Beckenstütze 17 dienende Verlängerung 23 vorhanden. Gemäß Ausführungsbeispiel besteht die Platte 20 und die Verlängerung 23 aus einem einzigen Teil, was eine besonders einfache und damit kostengünstige Herstellung erlaubt. Im Übergangsbereich von der Platte 20 zur Verlängerung 23 - vorzugsweise am Rand der Platte 20 - ist rückseitig ein Lenker 24 beweglich angelenkt, der mit seinem anderen Ende mit der unteren Querstrebe 2 des Rahmens 1 gelenkig verbunden ist. Anstelle eines Lenkers 24 kann auch ein Luftbalg (nicht dargestellt) vorgesehen sein.In the embodiment shown in FIGS. 3 and 4, the
Bei dieser Variante der Rückenlehne kann die Verlängerung 23 aber auch getrennt von der biegeelastischen Platte 20 hergestellt sein, was es ermöglicht, vielfältige Anpassungen an die Federcharakteristik und verschiedene Größen von Lehnen bei Serienfertigung aller sonstigen Teile der Lehne durchzuführen. Die Verbindung zwischen der biegeelastischen Platte 20 und einer getrennten Verlängerung 23 kann auf eine beliebige bekannte Art, beispielsweise durch Niet- oder Schraubverbindungen aber auch durch beliebig andere Verbindungen, z. B. durch Steck- und Klemmverbindungen erfolgen, was gegebenenfalls auch einen Austausch einer Verlängerung 23 gegen eine andere ermöglicht, was im Falle eines Besitzerwechsels eines Autos beim Fahrersitz erwünscht sein kann. Auch hier kann das freie Ende der Verlängerung 23 durch ein Federelement (nicht dargestellt) abgestützt werden.In this variant of the backrest, the
In Fig. 5 ist ein bevorzugtes Ausführungsbeispiel eines Wölbelements 5 mit integrierter Beckenstütze 17 dargestellt, das aus einem einzigen biegeelastischen Kunststoffteil besteht und beispielsweise durch Ausstanzen aus einer Platte oder durch Formpressen hergestellt sein kann. Hierbei weist der eigentliche Wölbungsteil an beiden Seiten Einschnitte 21 auf, die Flügel 22 begrenzen. Die Flügel 22 können durch Kalt- oder Warmverformung in einem zusätzlichen Arbeitsgang oder gleichzeitig bei einem Herstellungsverfahren mittels Formpressen abgewinkelt sein. Im zentralen Teil des Wölbelements sind Aussparungen 25 vorgesehen, durch die die Wölbeigenschaften des Wölbelements 5 beeinflußt werden können. Am unteren Ende des Wölbelements 5 befindet sich ein zentraler Anhang 26, dessen Breite etwa der Breite des Wölbelements 5 zwischen den Böden 27 zweier sich gegenüberliegender Einschnitte 21 entspricht. Aus dem Anhang 26 sind - im Ausführungsbeispiel vier - Vorsprünge 28, z. B. durch Stanzen, Schneiden oder sonstige Formengebung herausgearbeitet, die nur mit ihrer oberen Kante mit dem Wölbelement 5 verbunden sind.5 shows a preferred exemplary embodiment of an
Am unteren Ende weist der Anhang 26 eine geschlossene Kante 29 auf, die über - im Ausführungsbeispiel drei - Brücken 30 mit dem Wölbelement 5 fest verbunden ist. In der Kante 29 und im oberen Rand des Wölbelements 5 sind Öffnungen 31 ausgeführt, in denen der Seilzug bzw. die Hülse einer nicht dargestellten Bowdenzuganordnung zur Wölbungsverstellung des Wölbelements 5 eingehängt werden kann. Wird der Abstand zwischen den beiden Öffnungen 31 durch die Bowdenzuganordnung verkürzt, wölbt sich das Wölbelement 5 und die jeweils nur mit einer Kante mit dem Wölbelement 5 verbundenen Vorsprünge 28 treten mit ihren freien Enden aus der Flächigkeit des Anhangs 26 hervor und bilden damit die Beckenstütze 17.At the lower end, the
Zur Veränderung der Charakteristik des Wölbelements 5 und/oder der Teile des Anhangs 26 können auch Materialverstärkungen vorgesehen sein (nicht dargestellt).In order to change the characteristics of the
Bei jeder Verstellung der Wölbung, die durch die jeweilige verstellvorrichtung bewirkt wird, wird auch automatisch die mit dem jeweiligen Wölbelement verbundene Beckenstütze in die richtige Stellung gebracht, ganz gleich, ob die Wölbung sehr stark oder sehr flach eingestellt ist. Hierdurch wird einmal eine einfache Bauart und andererseits eine optimale Abstützung - insbesondere des Beckens - und nicht nur eine optimale Unterstützung der Lordose durch die verstellbare Rückenlehne gewährleistet.Whenever the curvature is adjusted by the respective adjusting device, the pelvic support connected to the respective arch element is automatically brought into the correct position, regardless of whether the curvature is set very strongly or very flat. This ensures a simple design on the one hand and on the other hand optimal support - in particular the pelvis - and not only optimal support for the lordosis through the adjustable backrest.
Im Falle des Ausführungsbeispiels gemäß Fig. 3 und 4 ist eine ganz einfache Verstellvorrichtung für das Wölbelement 5 - die Platte 20 - möglich, da zur Verstellung des Wölbelements 5 praktisch nur die Reibung im Anlenkpunkt überwunden werden muß, so daß nur ein sehr geringer Kraftaufwand erforderlich ist.In the case of the embodiment according to FIGS. 3 and 4, a very simple adjustment device for the arch element 5 - the plate 20 - is possible, since to adjust the
Das Wölbelement 5 und damit auch die Beckenstütze 17 kann auf den Stäben 4 der Höhe nach mittels verschiedener bekannter Mechanismen verstellbar angeordnet sein.The
Claims (10)
- A back rest of a seat with an adjusting device for a resilient convexly curving element (5) disposed on a frame (1) and adapted to adjust the curvature of the back rest, characterised in that it comprises an additional pelvic support (17) connected to the resilient convexly curving element (5) and which consists of an attachment (16, 23, 28) directed at the seat and forming part of the resilient convexly curving element (5).
- A back rest according to claim 1, characterised in that the pelvic support (17) is secured in the upper part of the resilient convexly curving element (5).
- A back rest according to claim 1, characterised in that the pelvic support (17) is fixed to the bottom end of the resilient convexly curving element (5).
- A back rest according to claim 1, characterised in that the resilient convexly curving element (5, 20) and the pelvic support (17) jointly consist of one single part.
- A back rest according to one of claims 1 to 4, characterised in that the resiliently convexly curving element (5) is in its lower part articulated on the bottom part of the frame (1) via at least one link (24).
- A back rest according to one of claims 1 to 5, characterised in that the resilient convexly curving element (5) or a plate (23) connected thereto is at the rear braced against the frame (1) by means of an air sac.
- A back rest according to one of claims 1 to 6, characterised in that at least one spring element (9) is disposed at the back, between the free end of the pelvic support (17) and the frame (1).
- A back rest according to one of claims 1 to 7, characterised in that the resilient convexly curving element (5, 20) and/or the pelvic support (17) consists of synthetic plastics material.
- A back rest according to one of claims 1 to 8, characterised in that the convexly curving element (5, 20) and/or the pelvic support (17) is made from one plate.
- A back rest according to one of claims 1 to 9, characterised in that the convexly curving element (5, 20) and/or the pelvic support (17) are provided with reinforcements.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4232679A DE4232679C1 (en) | 1992-09-29 | 1992-09-29 | Backrest of a seat with an adjustment device for an elastic arch element for adjusting the curvature of the backrest |
DE4232679 | 1992-09-29 | ||
PCT/EP1993/002457 WO1994007393A1 (en) | 1992-09-29 | 1993-09-10 | Seat back with an adjustment device for an elastic element enabling the arch of the back to be adjusted |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0662795A1 EP0662795A1 (en) | 1995-07-19 |
EP0662795B1 true EP0662795B1 (en) | 1996-12-11 |
Family
ID=6469163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93919319A Expired - Lifetime EP0662795B1 (en) | 1992-09-29 | 1993-09-10 | Seat back with an adjustment device for an elastic element enabling the arch of the back to be adjusted |
Country Status (11)
Country | Link |
---|---|
US (1) | US5651583A (en) |
EP (1) | EP0662795B1 (en) |
JP (1) | JP3556217B2 (en) |
KR (1) | KR100338858B1 (en) |
CN (1) | CN1049571C (en) |
AU (1) | AU684472B2 (en) |
BR (1) | BR9307126A (en) |
CA (1) | CA2144860A1 (en) |
DE (2) | DE4232679C1 (en) |
WO (1) | WO1994007393A1 (en) |
ZA (1) | ZA937180B (en) |
Cited By (15)
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US6619739B2 (en) | 2001-03-01 | 2003-09-16 | L & P Property Management Company | Universal ergonomic support with self-contained actuator |
US6623076B2 (en) | 1993-06-17 | 2003-09-23 | Schukra-Gerätebau AG | Adjustment apparatus for a resiliently flexible support element of a back rest |
US6652029B2 (en) | 2001-12-20 | 2003-11-25 | L & P Property Management Company | Unitized back plate and lumbar support |
US6652028B2 (en) | 2001-11-02 | 2003-11-25 | L & P Property Management | Apparatus and method for lumbar support with variable apex |
US6666511B2 (en) | 1989-08-04 | 2003-12-23 | Schukra Geratebau Ag | Arching mechanism and method of use |
US6676214B2 (en) | 2001-11-16 | 2004-01-13 | L & P Property Management Company | Method and apparatus for lumbar support with integrated actuator housing |
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- 1993-09-10 AU AU49597/93A patent/AU684472B2/en not_active Ceased
- 1993-09-10 EP EP93919319A patent/EP0662795B1/en not_active Expired - Lifetime
- 1993-09-10 JP JP50862294A patent/JP3556217B2/en not_active Expired - Lifetime
- 1993-09-10 BR BR9307126A patent/BR9307126A/en not_active IP Right Cessation
- 1993-09-10 US US08/407,007 patent/US5651583A/en not_active Expired - Lifetime
- 1993-09-10 KR KR1019950701151A patent/KR100338858B1/en not_active IP Right Cessation
- 1993-09-10 DE DE59304762T patent/DE59304762D1/en not_active Expired - Lifetime
- 1993-09-10 CA CA002144860A patent/CA2144860A1/en not_active Abandoned
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Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6666511B2 (en) | 1989-08-04 | 2003-12-23 | Schukra Geratebau Ag | Arching mechanism and method of use |
US6623076B2 (en) | 1993-06-17 | 2003-09-23 | Schukra-Gerätebau AG | Adjustment apparatus for a resiliently flexible support element of a back rest |
US6824214B2 (en) | 2001-03-01 | 2004-11-30 | L & P Property Management Company | Universal ergonomic support with self-contained actuator |
US6619739B2 (en) | 2001-03-01 | 2003-09-16 | L & P Property Management Company | Universal ergonomic support with self-contained actuator |
US6758522B2 (en) | 2001-03-29 | 2004-07-06 | L&P Property Management Company | Apparatus and method for varying coefficients of friction in a variable apex back support |
US6652028B2 (en) | 2001-11-02 | 2003-11-25 | L & P Property Management | Apparatus and method for lumbar support with variable apex |
US6676214B2 (en) | 2001-11-16 | 2004-01-13 | L & P Property Management Company | Method and apparatus for lumbar support with integrated actuator housing |
US6779844B2 (en) | 2001-12-14 | 2004-08-24 | L&P Propety Maqnagement Company | Arching lumbar support with weight distribution surface |
US6652029B2 (en) | 2001-12-20 | 2003-11-25 | L & P Property Management Company | Unitized back plate and lumbar support |
US7775595B2 (en) | 2004-02-06 | 2010-08-17 | Schukra Of North America | Drive mechanism |
US7984948B2 (en) | 2004-07-30 | 2011-07-26 | Schukra Of North America, Ltd. | Modular contour support apparatus |
US8382204B2 (en) | 2004-07-30 | 2013-02-26 | Schukra of North America Co. | Modular contour support apparatus |
US7690726B2 (en) | 2005-01-12 | 2010-04-06 | L&P Swiss Holding Company | Coupling unit and adjusting mechanism using the coupling unit |
US7841661B2 (en) | 2005-01-12 | 2010-11-30 | L&P Swiss Holding Company | Lumbar support assembly and corresponding seat structure |
US8544953B2 (en) | 2005-01-12 | 2013-10-01 | L&P Swiss Holding Ag | Lumbar support assembly and corresponding seat structure |
US7984949B2 (en) | 2007-04-24 | 2011-07-26 | Schukra Of North America | Lumbar and bolster support for second row seat |
US7997650B2 (en) | 2008-02-22 | 2011-08-16 | Schukra Of North America | Constant pressure retreating lumbar system |
CN105431328A (en) * | 2012-10-23 | 2016-03-23 | 李尔公司 | Thoracic region comfort seating system |
Also Published As
Publication number | Publication date |
---|---|
JPH09502363A (en) | 1997-03-11 |
AU4959793A (en) | 1994-04-26 |
WO1994007393A1 (en) | 1994-04-14 |
DE4232679C1 (en) | 1994-02-03 |
KR100338858B1 (en) | 2002-11-18 |
CN1049571C (en) | 2000-02-23 |
JP3556217B2 (en) | 2004-08-18 |
AU684472B2 (en) | 1997-12-18 |
KR950703297A (en) | 1995-09-20 |
BR9307126A (en) | 1999-03-30 |
CN1086694A (en) | 1994-05-18 |
DE59304762D1 (en) | 1997-01-23 |
EP0662795A1 (en) | 1995-07-19 |
CA2144860A1 (en) | 1994-04-14 |
ZA937180B (en) | 1995-06-19 |
US5651583A (en) | 1997-07-29 |
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