EP1689267B1 - Seatback adjustment - Google Patents

Seatback adjustment Download PDF

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Publication number
EP1689267B1
EP1689267B1 EP04802857A EP04802857A EP1689267B1 EP 1689267 B1 EP1689267 B1 EP 1689267B1 EP 04802857 A EP04802857 A EP 04802857A EP 04802857 A EP04802857 A EP 04802857A EP 1689267 B1 EP1689267 B1 EP 1689267B1
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EP
European Patent Office
Prior art keywords
seat
resilient element
clamping jaws
resilient
distance
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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.)
Not-in-force
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EP04802857A
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German (de)
French (fr)
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EP1689267A1 (en
Inventor
Christian Erker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SATO-OFFICE GmbH
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SATO-Office GmbH
Sato Office GmbH
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Publication of EP1689267A1 publication Critical patent/EP1689267A1/en
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Classifications

    • 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
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/448—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with resilient blocks
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
    • A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs
    • 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
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/441—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with adjustable elasticity

Definitions

  • the invention relates to a device for regulating the seat back tilt of a seat which is characterized in that it works without manual or motor assistance.
  • the adjustment of the seat back tilt is made individually depending on the weight of the seat occupant without the seat occupant having to use any lever or engine function.
  • the basis of the invention is the determination of the load by the weight influence of the seat occupant on the seat B and the sensory detection of the seat load by means of a sensor system A in the form of aChinanspecializeddistanzer posted and the transfer of the resulting by the seat load length distance by means of a transfer agent C to a resilient element D.
  • the resilient element consists of a reversibly compressible and mecanicalpandierbaren flexible material which is compressed relative to the force acting on the seat under load sensor sensed linear distance more or less strongly.
  • the resilient element is located between at least two clamping jaws or clamping surfaces 14. According to the detected by the sensor system and transferred by the transfer means to the resilient member travel distance, the resilient element, more or less compressed and the seat back connected components more or less spread, which is expressed directly as the angle of inclination of the seat back of a seat.
  • the dynamic dynamics of seats requires, depending on the weight of the person using the seat, a correspondingly regulated clamping force design of spring systems to push the seat with the body weight in position, or for the Resetting to another position, for example in the vertical ..
  • the problem of a manual regulation of the seat back inclination adjustment is often cumbersome.
  • the seat tilt adjustment is often manipulated while driving, which distracts the driver in the driving style and therefore may possibly be accident-causing.
  • spring-loaded power systems coupled to the seat and back light or delicate non-muscular persons can hardly manipulate such a system because they can not push back the back.
  • Heavy, muscular types on the other hand, have the feeling of drifting backwards if they want to change their backrest inclination.
  • the JP 02 071347 U describes a device for regulating the seat back tilt of a seat according to the preamble of claim 1.
  • the object of the invention is therefore to develop a regulation of the Lehnenne Trentseingnagna a seat so that always a optimal position of the seat back inclination comes about, regardless of the physical constitution of the user in terms of its weight and muscular fitness.
  • the seat occupant should enjoy a non-fatiguing seating comfort and the seat back regulation should be self-regulating, that is, without the aid of manipulable or motorized aids,
  • the weight detection of the user of the seat is sensed as Wegumblendistanz and transferred by means of a transfer system, for example in the form of a distance direction transducer and a push rod on a resilient element which is positioned between at least two jaws or clamping disks or combinations thereof, on the adjustment of the seat back tilt directly over connected to the jaws legs or by means of combined systems, where a leg is the seat back and the counter part can be a seat molding.
  • the weight sensor can be determined pneumatically or hydraulically and transferred to the spring element.
  • the detected weight as a sensor basic characteristic for controlling the movement dynamics automatically acts as a path distance on the follower elements in such a way and automatically that the inventive device works without any external energetic influence or manipulation aid.
  • the spring element can move freely in the zero position in the gap E, a minimum spring force must be applied by a resilient support element G, which is located with bias next to the resilient element and prevents the spring element comes into function prematurely.
  • the resilient element is in the compressed form a kind of energy storage. Its shape is therefore not fixed to the described wedge shape, but is geometrically diverse designable.
  • the present inventive device leads to the simplified regulation of the seat backs conforming to the dynamics of motion of the seat occupant. This is accompanied by a reduced material cost for the manufacture of the device in comparison with the prior art. In particular, because any manipulation mechanisms omitted, as well as any motors including batteries or power supply lines and including the elimination of associated malfunction occurring with service costs.
  • the device for regulating the seat back inclination is the term "self-regulating" most aptly the subject of the invention again.
  • the example figures are representative.
  • the pneumatic or hydraulic length distance detection for the purpose of their transfer to the resilient Element, for example, by means of hermetically sealed air or liquid cushion, which takes place via the media pressure and transfer lines, the necessary stroke distance for reciprocating the resilient member via corresponding piston mechanisms.
  • the direction converter 6 has a two-armed angle lever 20 with a balance bar 12 and a connecting bar 22.
  • the angle lever 22 is pivotally connected in the knee area by means of a connecting axis 24 with the seat 1 downwardly directed seat support 5.
  • the balance beam 12 is mounted with the rocking axis 11 on the mounting support 17, for example, linearly horizontally movable, i. the balance beam 12 is pivotable about the rocking axis 11, wherein the rocking axis 11 executes a corresponding horizontal linear movement during pivoting.
  • the resilient element D is arranged to be linearly movable, which is designed for example with a wedge-shaped base.
  • the pointed edge of the resilient element D triangular Grund lakegestalt is designated by the reference numeral 26.
  • FIG. 5 is the resilient element D with dash-dotted lines in the direction of the arrow 28 that is clarified in the viewing direction from below.
  • the resilient element D is connected by means of the push rod 7 with the angle lever 20 of the direction converter 6 i. connected with its end remote from the resilient member 26 to the connection axis 16.
  • the connecting axle 24 makes a clockwise movement about the rocker axis 11.
  • the connecting shaft 16 performs a corresponding movement in the clockwise direction about the rocking axis 11, so that the push rod 7 performs a movement in the direction of the arrow 28.
  • the resilient element D is thus moved in the direction of arrow 28.
  • This movement of the resilient element D is greater, i. longer, the greater the weight of the seat occupant sitting on the seat 1.
  • the spring stiffness of the resilient element D which is effective against the device 10 of the backrest 2 increases due to increasing width 30 of the contact between the device 10 and the resilient member D with increasing load on the seat 1.
  • the weighing spring 9 is tensioned when the seat 1 is loaded. If the seat 1 is relieved again, i. leaves a seat occupant the seat 1, so relaxes the balance spring 9 and the resilient member D returns to its unloaded starting position.
  • FIGS. 4 and 5 same details are in the FIGS. 4 and 5 denoted by the same reference numerals.

Landscapes

  • Seats For Vehicles (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Toilet Supplies (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Inorganic Insulating Materials (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

The invention concerns an arrangement for adjusting the seat back inclination of a seat into an optimum individual inclination position without manipulation or motor aids, which is characterised in that it comprises a sensor system for ascertaining the weight of the user of the seat and transfer of the result to a resilient element by way of which the sensor system result is transmitted to the seat back limbs.

Description

Die Erfindung betrifft eine Vorrichtung zur Regulierung der Sitzlehnenneigung eines Sitzes die dadurch gekennzeichnet ist, dass sie ohne manuelle oder motorische Hilfe funktioniert. Die Regulierung der Sitzlehnenneigung erfolgt individuell in Abhängigkeit vom Gewicht des Sitznutzers ohne dass der Sitznutzer irgendeinen Hebel oder eine Motorfunktion in Anspruch zu nehmen hat.The invention relates to a device for regulating the seat back tilt of a seat which is characterized in that it works without manual or motor assistance. The adjustment of the seat back tilt is made individually depending on the weight of the seat occupant without the seat occupant having to use any lever or engine function.

Grundlage der Erfindung ist die Belastungsermittlung durch das Gewichteinwirken des Sitzbenutzers auf die Sitzfläche B und die sensormässige Erfassung der Sitzbelastung mittels einem Sensorsystem A in der Form einer Längenmassdistanzerfassung und den Transfer der durch die Sitzbelastung resultierenden Längendistanzstrecke mittels einem Transfermittel C auf ein federndes Element D., Das federnde Element besteht aus einem reversibel komprimierbaren und zurückexpandierbaren flexiblen Material, das relativ zur auf den Sitz bei Belastung einwirkenden Kraft sensorisch erfassten Längendistanzstrecke mehr oder weniger stark komprimiert wird.The basis of the invention is the determination of the load by the weight influence of the seat occupant on the seat B and the sensory detection of the seat load by means of a sensor system A in the form of a Längenmaßdistanzerfassung and the transfer of the resulting by the seat load length distance by means of a transfer agent C to a resilient element D. The resilient element consists of a reversibly compressible and zurückexpandierbaren flexible material which is compressed relative to the force acting on the seat under load sensor sensed linear distance more or less strongly.

Das federnde Element ist zwischen mindestens zwei Klemmbacken beziehungsweise Klemmflächen 14 situiert. Entsprechend der durch das Sensorsystem erfassten und durch das Transfermittel auf das federnde Element transferierten Streckendistanz wird das federnde Element, mehr oder weniger komprimiert und die mit der Sitzlehne verbundenen Bauelemente mehr oder weniger stark gespreizt, was direkt als Winkelneigung der Sitzlehne eines Sitzes zum Ausdruck kommt.The resilient element is located between at least two clamping jaws or clamping surfaces 14. According to the detected by the sensor system and transferred by the transfer means to the resilient member travel distance, the resilient element, more or less compressed and the seat back connected components more or less spread, which is expressed directly as the angle of inclination of the seat back of a seat.

Die Bewegungsdynamik von Sitzen, bei eventuell mit dem Sitz gekoppelter Sitzlehne, erfordert, in Abhängigkeit vom Gewicht der den Sitz nutzenden Person, eine entsprechend regulierte Spannkraftgestaltung von Federsystemen um den Sitz mit dem Körpergewicht in Position zu drücken, beziehungsweise für die Rückstellung in eine andere Position, beispielsweise in die Vertikale.. Die Problematik einer manuellen Regelung der Sitzlehnenneigungseinstellung, üblicherweise mittels der Überwindung einer Federspannkraft, ist oft beschwerlich. Im Kraftfahrzeugbereich beispielsweise, wird die Sitzneigungseinstellung oft während dem Fahren manipuliert, was den Fahrer in der Fahrweise ablenkt und kann deshalb gegebenenfalls unfallauslösend sein. Bei mit dem Sitz und der Lehne gekoppelten Federspannkraftsystemen können leichte, beziehungsweise zierliche, nichtmuskulöse Personen ein solches System kaum manipulieren, weil sie die Lehne nicht zurückdrücken können. Schwere, muskulöse Typen dagegen, haben das Gefühl nach hinten abzudriften, wenn sie die Lehnenneigung nach rückwärts zu verändern wünschen.The dynamic dynamics of seats, possibly coupled with the seat back, requires, depending on the weight of the person using the seat, a correspondingly regulated clamping force design of spring systems to push the seat with the body weight in position, or for the Resetting to another position, for example in the vertical .. The problem of a manual regulation of the seat back inclination adjustment, usually by overcoming a spring tension, is often cumbersome. In the automotive sector, for example, the seat tilt adjustment is often manipulated while driving, which distracts the driver in the driving style and therefore may possibly be accident-causing. In spring-loaded power systems coupled to the seat and back, light or delicate non-muscular persons can hardly manipulate such a system because they can not push back the back. Heavy, muscular types, on the other hand, have the feeling of drifting backwards if they want to change their backrest inclination.

Mechanische Systeme von Stellmechanismen zur Regelung oder Positionsänderung der Lehnen von Sitzen, auf manueller beziehungsweise motorischer Basis, sind zu genüge bekannt und sind Stand der Technik. Solche Systeme müssen stets in Abhängigkeit von der individuellen Statur des Benutzers individuell eingestellt werden. Eine optimale individuell und Körperbezogene Sitzlehnenpositionierung und Arretierung ist, wenn überhaupt, nur sehr schwer zu bewerkstelligen. Bei nichtkorrekter Lehneneinstellung erkennt der Nutzer, beispielweise bei der Nutzung eines Kraftfahrzeugsitzes, erst nach einer länger andauernden Fahrt das Auftreten von Rückenbeschwerden und einer gewissen Abgeschlafftheit. Auch eine Umarretierung der Sitzlehne in eine nur andere, aber wieder nicht korrekte Position, schafft allenfalls eine nur temporäre Abhilfe, weil diese korrigierte Sitzlehneneinstellung fast immer nicht die richtige ist.Mechanical systems of adjusting mechanisms for regulating or changing the position of the backs of seats, on manual or motorized basis, are well-known and are state of the art. Such systems must always be set individually depending on the individual stature of the user. An optimal individual and body-related seat back positioning and locking is, if at all, very difficult to accomplish. If the backrest adjustment is not correct, the user recognizes, for example when using a motor vehicle seat, the occurrence of back complaints and a certain degree of exhaustion only after a prolonged journey. Also, a Umarretierung the seat back in a different, but again not correct position, at best, only a temporary remedy, because this corrected seat back setting is almost always not the right one.

Die Bewegungsdynamik zwischen dem Benutzer eines Sitzes mit Sitzlehne muss temporär und permanent stets im Einklang sein und muss deshalb körperphysiologisch zufriedenstellend gelöst sein.The dynamics of movement between the user of a seat with seat back must be temporarily and permanently always in harmony and must therefore be resolved physiologically satisfactory.

Die JP 02 071347 U beschreibt eine Vorrichtung zur Regulierung der Sitzlehnenneigung eines Sitzes gemäß dem Oberbegriff des Anspruchs 1.The JP 02 071347 U describes a device for regulating the seat back tilt of a seat according to the preamble of claim 1.

Aufgabe der Erfindung ist es deshalb eine Regulierung der Lehnenneigungseinstellung eines Sitzes derart zu entwickeln, dass stets eine optimale Position der Sitzlehnenneigung zustande kommt, unabhängig von der physikalischen Konstitution des Benutzers bezüglich dessen Gewicht und dessen muskulöser Durchtrainiertheit.The object of the invention is therefore to develop a regulation of the Lehnenneigungseinstellung a seat so that always a optimal position of the seat back inclination comes about, regardless of the physical constitution of the user in terms of its weight and muscular fitness.

Ferner soll der Sitzbenutzer einen nichtermüdenden Sitzkomfort geniessen und die Sitzlehnenregulierung soll selbstregulierend sein, das heisst, ohne Zuhilfenahme von manipulierbaren oder motorischen Hilfsmitteln,Furthermore, the seat occupant should enjoy a non-fatiguing seating comfort and the seat back regulation should be self-regulating, that is, without the aid of manipulable or motorized aids,

Die Aufgabe der Erfindung wurde gelöst gemäß den Ausführungen von Anspruch 1.The object of the invention has been achieved according to the statements of claim 1.

Basis der Erfindung und Primärsensor für die Lösung der Aufgabe der Erfindung, ist die Gewichtserfassung des Benutzers des Sitzes. Der erfasste Gewichtswert wird sensorisch als Wegstreckendistanz erfasst und mittels einem Transfersystem, beispielsweise in der Form eines Distanzrichtungswandlers und einer Schubstange, auf ein federndes Element übertragen, das zwischen mindestens zwei Klemmbacken beziehungsweise Klemmscheiben beziehungsweise deren Kombinationen positioniert ist, über die die Einstellung der Sitzlehnenneigung direkt über mit den Klemmbacken verbundene Schenkel erfolgt oder auch mittels kombinierter Systeme, wo ein Schenkel die Sitzlehne darstellt und das Konterteil ein Sitzformteil sein kann. Des weiteren kann die Gewichtssensorik pneumatisch oder hydraulisch ermittelt und zum Federelement transferiert werden.Basis of the invention and primary sensor for achieving the object of the invention, the weight detection of the user of the seat. The detected weight value is sensed as Wegstreckendistanz and transferred by means of a transfer system, for example in the form of a distance direction transducer and a push rod on a resilient element which is positioned between at least two jaws or clamping disks or combinations thereof, on the adjustment of the seat back tilt directly over connected to the jaws legs or by means of combined systems, where a leg is the seat back and the counter part can be a seat molding. Furthermore, the weight sensor can be determined pneumatically or hydraulically and transferred to the spring element.

Das erfasste Gewicht als Sensor-Basiskennwert zur Bewegungsdynamikregulierung wirkt als Wegstreckendistanz automatisch auf die Folgeelemente derart und automatisch, dass die erfinderische Vorrichtung ohne jedwede energetische Fremdeinwirkung oder Manipulationshilfe funktioniert.The detected weight as a sensor basic characteristic for controlling the movement dynamics automatically acts as a path distance on the follower elements in such a way and automatically that the inventive device works without any external energetic influence or manipulation aid.

Die Erfindung wird anhand der folgenden Figuren 1 bis 5 beschrieben.

Fig.1
zeigt das Grundprinzip der erfinderischen Vorrichtung mit dem federnden Element D in der Position, wie bei schwer belastetem Sitz 1, mit Klemmbacken 14 und in dieser Konstellation mit Schenkel 15, in der Doppelfunktion als gleichzeitigem Klemmteil. E ist der Klemmspalt zwischen dem Klemmbacken 14 und in diesem Falle Schenkel 15
Fig.2
zeigt das Prinzip wie in Figur 1, jedoch mit dem federnden Element D in der Position bei geringster Sitzbelastung, das federnde Element ist in dieser Position stark komprimiert
Fig.3
zeigt die beiden Darstellungen des federnden Elements D bei den entsprechenden Belastungen B bei geringer Belastung - gestrichelte Position des Elements D1 und bei starker Belastung - durchgehende Linien - des Elements D2 entsprechend der vom Sensorsystem A erfassten Streckendistanzen, die transferiert mittels C auf das federnde Element über die Klemmbacken 14 die Lehnenneigung bewirken.
The invention will be apparent from the following FIGS. 1 to 5 described.
Fig.1
shows the basic principle of the inventive device with the resilient element D in the position, as in heavily loaded seat 1, with jaws 14 and in this constellation with leg 15, in the double function as a simultaneous clamping part. E is the nip between the jaws 14 and in this case legs 15
Fig.2
shows the principle as in FIG. 1 , but with the resilient element D in the position at the lowest seat load, the resilient element is highly compressed in this position
Figure 3
shows the two representations of the resilient element D at the corresponding loads B at low load - dashed position of the element D1 and under heavy load - solid lines - the element D2 according to the detected by the sensor system A distances, transferred by means of C on the resilient element on the jaws 14 cause the Lehnenneigung.

Die weiteren figuralen Darstellungen zeigen beispielhaft die erfinderische Vorrichtung.

Fig. 4
zeigt einen Stuhl mit Sitz und der erfinderischen Konstruktionsvariante in der Seitenansicht in der Neutral-Ruheposition, mit dem Sitz 1 ,der Lehne 2, dem Stuhlfuß 3, dem Supportschaft 4, dem Sitzträger 5, dem unteren Lehnenschenkel 10, der Schubstange 7,dem federnden Element D, dem Sensorsystem C mit der Wiegefeder 9 und der am Ende des Wiegebalkens 12 befindlichen Wippschenkel 13.. Des weiteren der Verbindungsachse von 6 und 7 und dem Befestigungssupport 17.
Fig. 5
zeigt die Konstruktion eines Stuhls in Funktion, bei Sitzbelastung B. Über der am Sitzträger 5, der fixierten Wippachse 11 und dem sich am Ende des Wiegebalkens 12 befindlichen Wippschenkel 13, wird die durch den Benutzer auf den Sitz einwirkende Kraft B über den Distanzrichtungswandler 6 auf die waagerechte Schubstange 7 zusammengenommen als Transfermittel C, auf das federnde Element D übertragen. Das distanzbezogene, jedoch zahlenwertmässig nicht ermittelte Wiegeresultat wird über das federnde Element auf den unteren Lehnenschenkel 10 übertragen wodurch die Sitzlehne eine der Sitzbelastung B entsprechende Winkelneigung annimmt. In diesem Falle beispielsweise wie gemäß 2a.
The further figural representations show an example of the inventive device.
Fig. 4
shows a chair with seat and the inventive design variant in the side view in the neutral rest position, with the seat 1, the back 2, the chair foot 3, the support shaft 4, the seat support 5, the lower back leg 10, the push rod 7, the resilient Element D, the sensor system C with the balance spring 9 and the rocker arm 13 located at the end of the balance beam 12. Furthermore, the connection axis of FIGS. 6 and 7 and the attachment support 17.
Fig. 5
shows the construction of a chair in function, with seat load B. About the on the seat support 5, the fixed rocker shaft 11 and located at the end of the balance beam 12 rocking leg 13, the through the user acting on the seat force B via the distance direction converter 6 on the horizontal push rod 7 taken together as transfer means C, transmitted to the resilient element D. The distance-related, but numerically not determined weighing result is transmitted to the lower back leg 10 via the resilient element whereby the seat back assumes a tilt angle corresponding to the seat load B. In this case, for example, as in 2a.

Damit sich das federnde Element in der Nullposition im Spalt E frei bewegen kann, muss eine Mindestfederkraft durch ein federndes Stützelement G aufgebracht werden, das mit Vorspannung neben dem federnden Element situiert ist und das verhindert, dass das federnde Element vorzeitig in Funktion tritt.Thus, the spring element can move freely in the zero position in the gap E, a minimum spring force must be applied by a resilient support element G, which is located with bias next to the resilient element and prevents the spring element comes into function prematurely.

Das federnde Element ist in der komprimierten Form eine Art Energiespeicher. Dessen Form ist deshalb nicht auf die geschilderte Keilform fixiert, sondern ist geometrisch verschiedenartig gestaltbar.The resilient element is in the compressed form a kind of energy storage. Its shape is therefore not fixed to the described wedge shape, but is geometrically diverse designable.

Die vorliegende erfinderische Vorrichtung führt zur vereinfachten Regulierung der Sitzlehnen konform mit der Bewegungsdynamik des Sitznutzers. Damit einher geht ein reduzierter Materialaufwand für die Herstellung der Vorrichtung im Vergleich mit dem Stande der Technik. Insbesondere weil jegliche Manipulationsmechanismen entfallen, wie ebenso eventuelle Motoren samt Batterien beziehungsweise Stromzuleitungen und inklusive des Wegfalls von damit verbundenen auftretenden Funktionsstörungen mit Serviceaufwand.The present inventive device leads to the simplified regulation of the seat backs conforming to the dynamics of motion of the seat occupant. This is accompanied by a reduced material cost for the manufacture of the device in comparison with the prior art. In particular, because any manipulation mechanisms omitted, as well as any motors including batteries or power supply lines and including the elimination of associated malfunction occurring with service costs.

Die Vorrichtung zur Regulierung der Sitzlehnenneigung gibt unter dem Begriff "selbstregulierend" am treffendsten den Erfindungsgegenstand wieder.The device for regulating the seat back inclination is the term "self-regulating" most aptly the subject of the invention again.

Die beispielhaften Figuren sind repräsentativ. Die pneumatische beziehungsweise hydraulische Längendistanzerfassung zwecks deren Transfer zum federnden Element, erfolgt beispielsweise mittels hermetisch geschlossenen Luft- oder Flüssigkeitskissen, wobei über den Mediendruck und Transferleitungen die erforderlichen Hubdistanz zur Hin und Herbewegung des federnden Elements über entsprechende Kolbenmechanismen stattfindet.The example figures are representative. The pneumatic or hydraulic length distance detection for the purpose of their transfer to the resilient Element, for example, by means of hermetically sealed air or liquid cushion, which takes place via the media pressure and transfer lines, the necessary stroke distance for reciprocating the resilient member via corresponding piston mechanisms.

Nachfolgend wird die Funktionsweise der erfindungsgemäßen Sitzlehnenregulierung anhand der Figuren 4 und 5 erläutert:

  • Nimmt auf den Sitz 1 ein Sitzbenutzer Platz, so führt der Sitzträger 5 entlang des Supportschaftes 4 eine lineare Bewegung nach unten durch. Diese lineare Bewegung des Sitzträgers 5 in Bezug zum Supportschaft 4 ist in Figur 5 durch den Pfeil 18 verdeutlicht.
Hereinafter, the operation of the seat back adjustment according to the invention with reference to the FIGS. 4 and 5 explains:
  • If a seat occupant is seated on the seat 1, the seat support 5 makes a linear movement downwards along the support shaft 4. This linear movement of the seat support 5 with respect to the support shaft 4 is in FIG. 5 illustrated by the arrow 18.

Der Richtungswandler 6 weist einen zweiarmigen Winkelhebel 20 mit einem Wiegebalken 12 und einem Verbindungsbalken 22 auf. Der Winkelhebel 22 ist im Kniebereich mittels einer Verbindungsachse 24 mit dem vom Sitz 1 nach unten gerichteten Sitzträger 5 schwenkbeweglich verbunden.The direction converter 6 has a two-armed angle lever 20 with a balance bar 12 and a connecting bar 22. The angle lever 22 is pivotally connected in the knee area by means of a connecting axis 24 with the seat 1 downwardly directed seat support 5.

Der Wiegebalken 12 ist mit der Wippachse 11 am Befestigungssupport 17 beispielsweise linear horizontal beweglich angebracht, d.h. der Wiegebalken 12 ist um die Wippachse 11 schwenkbar, wobei die Wippachse 11 bei einer Verschwenkung eine entsprechende horizontale lineare Bewegung ausführt.The balance beam 12 is mounted with the rocking axis 11 on the mounting support 17, for example, linearly horizontally movable, i. the balance beam 12 is pivotable about the rocking axis 11, wherein the rocking axis 11 executes a corresponding horizontal linear movement during pivoting.

Zwischen der Wippachse 11 und der Verbindungsachse 24 ist der Wippschenkel 13 des Richtungswandlers definiert.Between the rocker axis 11 and the connecting axis 24 of the rocker arm 13 of the direction converter is defined.

An der Unterseite des Sitzes 1 ist das federnde Element D linear beweglich angeordnet, das beispielsweise mit einer keilförmigen Grundfläche gestaltet ist. Die spitze Kante des federnden Elementes D dreieckiger Grundflächengestalt ist mit der Bezugsziffer 26 bezeichnet. In Figur 5 ist das federnde Element D mit strichpunktierten Linien in Blickrichtung des Pfeiles 28 d.h. in Blickrichtung von unten verdeutlicht.At the bottom of the seat 1, the resilient element D is arranged to be linearly movable, which is designed for example with a wedge-shaped base. The pointed edge of the resilient element D triangular Grundflächengestalt is designated by the reference numeral 26. In FIG. 5 is the resilient element D with dash-dotted lines in the direction of the arrow 28 that is clarified in the viewing direction from below.

Das federnde Element D ist mittels der Schubstange 7 mit dem Winkelhebel 20 des Richtungswandlers 6 verbunden d.h. mit seinem vom federnden Element 26 entfernten Ende an die Verbindungsachse 16 angeschlossen.The resilient element D is connected by means of the push rod 7 with the angle lever 20 of the direction converter 6 i. connected with its end remote from the resilient member 26 to the connection axis 16.

Bei einer Belastung des Sitzes 10 durch einen Sitzbenutzer führt also die Verbindungsachse 24 um die Wippachse 11 eine Bewegung im Uhrzeigersinn aus. Dabei führt die Verbindungsachse 16 eine entsprechende Bewegung im Uhrzeigersinn um die Wippachse 11 aus, so dass die Schubstange 7 eine Bewegung in Richtung des Pfeiles 28 durchführt. Das federnde Element D wird also in Richtung des Pfeiles 28 bewegt. Diese Bewegung des federnden Elementes D ist umso größer d.h. länger, je größer das Gewicht des auf dem Sitz 1 Platz nehmenden Sitzbenutzers ist. Das bedeutet jedoch, dass die Federhärte des federnden Elementes D, die gegen das Bauelement 10 der Lehne 2 wirksam wird, infolge zunehmender Breite 30 des Kontaktes zwischen dem Bauelement 10 und dem federnden Element D mit zunehmender Belastung des Sitzes 1 zunimmt.When the seat 10 is loaded by a seat user, therefore, the connecting axle 24 makes a clockwise movement about the rocker axis 11. In this case, the connecting shaft 16 performs a corresponding movement in the clockwise direction about the rocking axis 11, so that the push rod 7 performs a movement in the direction of the arrow 28. The resilient element D is thus moved in the direction of arrow 28. This movement of the resilient element D is greater, i. longer, the greater the weight of the seat occupant sitting on the seat 1. This means, however, that the spring stiffness of the resilient element D, which is effective against the device 10 of the backrest 2 increases due to increasing width 30 of the contact between the device 10 and the resilient member D with increasing load on the seat 1.

Gleichzeitig wird bei der Belastung des Sitzes 1 die Wiegefeder 9 gespannt. Wird der Sitz 1 wieder entlastet, d.h. verlässt ein Sitzbenutzer den Sitz 1, so entspannt sich die Wiegefeder 9 und das federnde Element D kehrt in seine unbelastete Ausgangslage zurück.At the same time, the weighing spring 9 is tensioned when the seat 1 is loaded. If the seat 1 is relieved again, i. leaves a seat occupant the seat 1, so relaxes the balance spring 9 and the resilient member D returns to its unloaded starting position.

Gleiche Einzelheiten sind in den Figuren 4 und 5 mit denselben Bezugsziffern bezeichnet.Same details are in the FIGS. 4 and 5 denoted by the same reference numerals.

Claims (5)

  1. Device for adjusting the seatback inclination of a seat, the device comprising the following elements:
    a. a sensor system (A) for determining a length distance resulting from the loading of a seat surface (B) between the zero value, when the seat is unloaded, the maximum value, when the seat is loaded by a very heavy person, and corresponding intermediate values as a function of the individual weight of the particular seat user,
    b. a transfer means (C) for transmitting the respective, determined length distance
    c. to a resilient element (D) which can be reversibly changed in such a manner that the compressibility and expandability thereof transmits the transmitted distance changes to
    d. two clamping jaws (14) between which the resilient element is provided and which are directly or indirectly connected to structural elements which represent the seatback inclination, and
    e. a resilient supporting element (G) for safeguarding the free mobility of the resilient element (D) during the zero loading as per (B) as an initial stress,
    characterized in that the resilient element (D) has a bulky volume, in that the resilient element (D) is situated in the clamping gap (E) between the two clamping jaws, and in that the resilient element (D) is only partially grasped by the clamping jaws and compressed, and the area to be compressed, and therefore the energy storage volume, is reduced or increased as a function of the distance movements.
  2. Device according to Claim 1, characterized in that the resilient element (D) is only partially grasped by the two clamping jaws and compressed, and, as a function of the distance movements, elastomer material which differs in density as per requirements is located in the region grasped by the clamping jaws.
  3. Device according to either of Claims 1 and 2, characterized in that the resilient element (D) is of a flat-shaped and wedge-shaped design with regular angles.
  4. Device according to one of Claims 1 to 3,
    characterized in that the resilient element (D) is arranged in a linearly movable manner on the lower side of the seat, and in that the resilient element (D) is configured with a preferably wedge-shaped, triangular base surface.
  5. Device according to one of Claims 1 to 4,
    characterized in that the resilient element (D) is composed of closed-cell polyurethane integral foam.
EP04802857A 2003-12-02 2004-12-02 Seatback adjustment Not-in-force EP1689267B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10356190A DE10356190B4 (en) 2003-12-02 2003-12-02 Backrest adjustment
PCT/DE2004/002649 WO2005053461A1 (en) 2003-12-02 2004-12-02 Seatback adjustment

Publications (2)

Publication Number Publication Date
EP1689267A1 EP1689267A1 (en) 2006-08-16
EP1689267B1 true EP1689267B1 (en) 2010-01-20

Family

ID=34638249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04802857A Not-in-force EP1689267B1 (en) 2003-12-02 2004-12-02 Seatback adjustment

Country Status (7)

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US (1) US7549701B2 (en)
EP (1) EP1689267B1 (en)
JP (1) JP2007515209A (en)
AT (1) ATE455477T1 (en)
CA (1) CA2547601C (en)
DE (2) DE10356190B4 (en)
WO (1) WO2005053461A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110018321A1 (en) * 2009-07-21 2011-01-27 Toung-Chun Pan Chair Capable of Reduced Transportation Volume and Rapid Assembly
DE102010015866B4 (en) * 2010-03-09 2022-01-20 Kinnarps Ab chair
EP2684491A1 (en) * 2012-07-13 2014-01-15 Fumoto Giken Co., Ltd. Holding force adjusting apparatus
DE102016102891A1 (en) * 2016-02-18 2017-08-24 Logicdata Electronic & Software Entwicklungs Gmbh Gas spring device for adjusting the height of an office chair

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Publication number Priority date Publication date Assignee Title
US2587822A (en) * 1946-06-21 1952-03-04 Walter D Corning Resiliently mounted chair back
DE3139448C2 (en) * 1981-10-03 1984-06-07 Kusch & Co Sitzmöbelwerke KG, 5789 Hallenberg chair
DE3616438A1 (en) * 1986-05-15 1987-11-19 Stabilus Gmbh HYDROPNEUMATIC ADJUSTMENT
JPH0440531Y2 (en) * 1988-11-19 1992-09-22
JPH03222907A (en) * 1989-11-30 1991-10-01 Itoki Kosakusho Co Ltd Elastic force regulator of desk
US5224758A (en) * 1989-12-27 1993-07-06 Itoki Crebio Corporation Tilting control assembly for chair
EP0559185A1 (en) * 1992-03-03 1993-09-08 Sdm Hansen Ag Synchronized adjustment device for office-chairs
DE4327373C2 (en) * 1993-08-14 1997-07-17 Girsberger Holding Ag Chair, especially office chair
DE29802360U1 (en) * 1998-02-12 1999-06-10 Vogtherr, Burkhard, Mulhouse Functional chair
DE19931099C2 (en) * 1999-07-06 2001-08-09 Roeder Peter Chair with independent adjustment of the preload force of the backrest
AU2002224783A1 (en) * 2000-10-18 2002-04-29 Roder Haworth Buro-Sitzmobel Gmbh Office chair
JP2002166768A (en) * 2000-11-30 2002-06-11 Tachi S Co Ltd Load detecting structure of vehicle seat
AT411210B (en) * 2002-03-05 2003-11-25 Hansen Eckhard Dipl Ing CHAIR
DE10219478B4 (en) 2002-04-30 2006-07-13 Klöber GmbH Chair with user weight dependent power storage

Also Published As

Publication number Publication date
WO2005053461A1 (en) 2005-06-16
JP2007515209A (en) 2007-06-14
US20070170762A1 (en) 2007-07-26
DE10356190A1 (en) 2005-07-07
DE10356190B4 (en) 2007-10-04
ATE455477T1 (en) 2010-02-15
CA2547601C (en) 2012-11-27
CA2547601A1 (en) 2005-06-16
DE502004010686D1 (en) 2010-03-11
US7549701B2 (en) 2009-06-23
EP1689267A1 (en) 2006-08-16

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