EP0399251A1 - Chair, particularly work- or office-chair - Google Patents
Chair, particularly work- or office-chair Download PDFInfo
- Publication number
- EP0399251A1 EP0399251A1 EP19900108266 EP90108266A EP0399251A1 EP 0399251 A1 EP0399251 A1 EP 0399251A1 EP 19900108266 EP19900108266 EP 19900108266 EP 90108266 A EP90108266 A EP 90108266A EP 0399251 A1 EP0399251 A1 EP 0399251A1
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- EP
- European Patent Office
- Prior art keywords
- seat
- backrest
- levers
- bearing block
- swivel
- 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
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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
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03283—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with fluid springs
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
Definitions
- the invention relates to a chair, in particular a work or office chair, with a seat which can be pivoted in the front region about a horizontal pivot axis and whose inclination can be changed and, depending on the change in inclination of the seat, the backrest can be forcibly changed in inclination, in the case of increasing inclination of the seat, the backrest approaches the facing end of the seat, in which the pivot axis of the seat on the bearing block of the chair frame can be adjusted downwards and in the direction of the backrest, and in which the seat is articulated with pivoting levers, one end of which is fixed and non-rotatable attached to the backrest and the other ends are rotatably mounted on the bearing block.
- a chair of this type is known from DE-GM 88 14 409. With this adjustment mechanism, this known chair achieves a relative movement between the backrest and the rear end of the seat without additional carrying levers which articulate the front pivot axis of the seat with the bearing block, as are required for a seat according to DE-GM 88 06 835.
- the swivel levers are preferably designed as armrests and armrests, since they are guided over the seat.
- pivot levers are articulated about a quarter of the depth away from the rear end of the seat on the seat, that the ends of the pivot levers directed towards the backrest have two sections approximately at right angles to one another that the backrest is fixed or vertically steplessly or infinitely adjustable, is connected to the sections forming the free end of the swivel levers and that the other ends of the swivel levers are articulated to the bearing block approximately below the center of the seat and to the standing surface towards the adjoining section of the swivel levers at an obtuse angle of approximately 150 ° to 170 °.
- the swivel levers are located below the seat and only protrude over the seat in the area of the rear edge and support the backrest with these sections.
- the design is such that the sections of the pivot levers adjoining the pivot bearings between the seat and the pivot levers in the direction of the backrest have a length which is greater than the distance of the pivot bearings from the rear edge of the seat, so that the pivot levers change the inclination of the Do not interfere with the seat.
- the seat and backrest can be turned around the pivot bearing of the swivel lever on the bearing block.
- the seat performs a kind of opposite movement, which leads to the shortening of the distance between the backrest and the facing end of the seat. This eliminates the so-called "pull-out effect" when lowering the seat.
- one embodiment provides that the bearing block rises at an angle of approximately 20 ° to the pivot axis of the seat.
- the automatic adjustment of the seat and the backrest in an initial position is achieved according to one embodiment in that the pivot levers are connected to one another in the region of the sections carrying the backrest and in that a gas spring is supported in an articulated manner on the bearing block and a crossbeam connecting the sections to one another.
- the same setting of the starting position can also be achieved in that a torsion bar spring is accommodated in the pivot bearings between the pivot levers and the bearing block, or that the pivot bearings are supported on the bearing block between the seat and the pivot levers by means of a compression spring.
- Fig. 1 the adjustment mechanism of the chair according to the invention is shown schematically in side view. Of the chair frame, only the bearing block 10 attached to the upper end is shown. This bearing block 10 rises towards the front edge of the seat 14, of which only the seat support is shown, at an angle of approximately 20 °.
- the horizontal pivot axis 28 of the seat 14 is guided in elongated holes downwards and adjustable in the direction of the backrest. In the starting position of the chair, the pivot axis is at the upper front end of the elongated holes 11. About a third of the depth of the seat 14 from the rear edge of the seat 14, the two pivot levers 17 are rotatably mounted on the underside of the seat 14.
- the ends of the cross member 25 are bent downwards at right angles and are connected in an articulated manner to the bearing straps 16 of the seat 14, as indicated by the screws which are passed through a bore in the bearing straps 16 and are screwed to the bent ends of the cross member 25.
- the pivot levers 17 extend with the sections 18 in the direction of the front of the seat 14 and are rotatably connected to the bearing block 10 approximately below the center of the seat 14, as the pivot bearings 12 show.
- the pivot levers 17 extend in the direction of the rear of the seat 14 and extend approximately horizontally in the starting position of the chair with the sections 19.
- the sections 19 extend beyond the rear edge of the seat 14 and merge into the sections 20 bent upward at approximately right angles.
- the backrest 22, of which only the backrest support is shown, is fixedly attached to these sections 20.
- the sections 16 and 19 of the pivoting lever 17 enclose an angle ⁇ of approximately 150 ° to approximately 170 ° to the base of the chair.
- the sections 20 of the pivot levers 17 are firmly connected to one another via the cross member 27.
- the gas spring 24 is supported in an articulated manner on the rear end of the bearing block 10 and on the cross member 27, as the joints 13 and 23 show.
- the gas spring 24 pushes the pivot lever 17 counterclockwise around the pivot bearing 21 upwards until the sections 19 rest against the underside of the seat 14 and the chair assumes its starting position.
- the cross member 26 is attached, which is angled downwards at right angles with its ends.
- the elongated holes 11 are made in the angled ends.
- the tabs 15 of the seat 14 cover the ends of the cross member 26 on the outside thereof. Screws form the pivot axis, which are inserted from the inside of the ends of the cross member 26 into the elongated holes 11 and screwed into threaded holes in the tabs 15.
- Fig. 3 in addition to the initial position of the chair with the seat 14 and the backrest 22 and the lowered position of the seat 14 'and the backrest 22' is drawn. It can be clearly seen that the distance between the facing ends of the seat 14 and backrest 22 changes when adjusting in the lowered position, as shown by the seat 14 'and the backrest 22'. This distance can be reduced from 62 mm, for example, to about 30 mm. The horizontal inclination of the seat 14 from about 2 ° can increase to about 6 °, the seat 14 always falling towards the backrest 22 or 22 '.
- the backrest 22 had an inclination of approximately 7 ° in the starting position, then this inclination has increased to approximately 18 ° in the lowered position, ie the inclination of the backrest 22 has increased disproportionately compared to the inclination of the seat 14.
- the horizontal pivot axis shifts 28 of the seat 14 in the elongated holes 11 to the lower, rear ends of the elongated holes 11 in the position 28 ', whereby a kind of counter movement of the seat 14 is carried out about the pivot bearing 21, which ultimately for the relative movement between the seat 14 and backrest 22 with responsible for.
- the pivot bearings 21 shift their position to 21 'and the pivot levers 17 are pivoted about the pivot bearing 12 until they assume their dashed position 17'.
- the gas spring 24 is compressed since the joint 13 maintains its position and the joint 23 is lowered into the position 23 '.
- the sections of the pivot lever 17 take the positions 18 ', 19' and 20 'in the lowered position.
- the gas spring 24 exerts a restoring force on the pivot lever 17, which returns the seat 14 and the backrest to the starting position.
- the restoring force can also be applied by means of torsion bar springs 29 which are introduced into the rotary bearings 12.
- the pivot axis 28 can also accommodate torsion bar springs of this type.
- the pivot bearings 21 can also be supported on the bearing block 10 by means of a compression spring 30, which exerts the restoring force on the pivot levers 17 and the seat 14.
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs Characterized By Structure (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Special Chairs (AREA)
Abstract
Description
Die Erfindung betrifft einen Stuhl, insbesondere Arbeits- oder Bürostuhl, mit einem im vorderen Bereich um eine horizontale Schwenkachse schwenkbaren und in der Neigung veränderbaren Sitz und einer in Abhängigkeit von der Neigungsänderung des Sitzes zwangsweise in der Neigung überproportional veränderbaren Rückenlehne, bei dem mit zunehmender Neigung des Sitzes die Rückenlehne sich dem zugekehrten Ende des Sitzes nähert, bei dem die Schwenkachse des Sitzes am Lagerbock des Stuhlgestelles nach unten sowie in Richtung zur Rückenlehne begrenzt verstellbar ist und bei dem der Sitz gelenkig mit Schwenkhebeln verbunden ist, deren eine Enden fest und unverdrehbar an der Rückenlehne angebracht und deren andere Enden am Lagerbock drehbar gelagert sind.The invention relates to a chair, in particular a work or office chair, with a seat which can be pivoted in the front region about a horizontal pivot axis and whose inclination can be changed and, depending on the change in inclination of the seat, the backrest can be forcibly changed in inclination, in the case of increasing inclination of the seat, the backrest approaches the facing end of the seat, in which the pivot axis of the seat on the bearing block of the chair frame can be adjusted downwards and in the direction of the backrest, and in which the seat is articulated with pivoting levers, one end of which is fixed and non-rotatable attached to the backrest and the other ends are rotatably mounted on the bearing block.
Ein Stuhl dieser Art ist durch das DE-GM 88 14 409 bekannt. Dieser bekannte Stuhl erreicht mit diesem Verstellmechanismus eine Relativbewegung zwischen der Rückenlehne und dem hinteren Ende des Sitzes ohne zusätzliche Mitführhebel, die die vordere Schwenkachse des Sitzes gelenkig mit dem Lagerbock verbinden, wie sie bei einem Sitz nach dem DE-GM 88 06 835 erforderlich sind. Die Schwenkhebel sind bei diesem bekannten Stuhl vorzugsweise als Armlehnen und Armstützen ausgebildet, da sie über den Sitz geführt sind.A chair of this type is known from DE-GM 88 14 409. With this adjustment mechanism, this known chair achieves a relative movement between the backrest and the rear end of the seat without additional carrying levers which articulate the front pivot axis of the seat with the bearing block, as are required for a seat according to DE-GM 88 06 835. In this known chair, the swivel levers are preferably designed as armrests and armrests, since they are guided over the seat.
Es ist Aufgabe der Erfindung, einen Stuhl der eingangs erwähnten Art zu schaffen, bei dem eine Relativbewegung zwischen der Rückenlehne und dem zugekehrten Ende des Sitzes in Verbindung mit einer Synchronverstellung von Sitz und Rückenlehne erreicht wird, ohne daß der Verstellmechanismus im Bereich des Sitzes über denselben geführt werden muß.It is an object of the invention to provide a chair of the type mentioned, in which a relative movement is achieved between the backrest and the facing end of the seat in connection with a synchronous adjustment of the seat and backrest without the adjustment mechanism in the region of the seat having to be guided over the same.
Diese Aufgabe wird nach der Erfindung dadurch erreicht, daß die Schwenkhebel etwa ein Viertel der Tiefe vom hinteren Ende des Sitzes entfernt am Sitz angelenkt sind, daß die zur Rückenlehne gerichteten Enden der Schwenkhebel zwei etwa im rechten Winkel zueinander stehende Abschnitte aufweisen, daß die Rückenlehne fest oder vertikal stufig oder stufenlos verstellbar mit den das freie Ende der Schwenkhebel bildenden Abschnitten verbunden ist und daß die anderen Enden der Schwenkhebel etwa unterhalb der Sitzmitte an dem Lagerbock angelenkt sind und zur Standfläche hin zu dem anschließenden Abschnitt der Schwenkhebel in einem stumpfen Winkel von etwa 150° bis 170° stehen.This object is achieved according to the invention in that the pivot levers are articulated about a quarter of the depth away from the rear end of the seat on the seat, that the ends of the pivot levers directed towards the backrest have two sections approximately at right angles to one another that the backrest is fixed or vertically steplessly or infinitely adjustable, is connected to the sections forming the free end of the swivel levers and that the other ends of the swivel levers are articulated to the bearing block approximately below the center of the seat and to the standing surface towards the adjoining section of the swivel levers at an obtuse angle of approximately 150 ° to 170 °.
Die Schwenkhebel sind unterhalb des Sitzes angeordnet und ragen nur im Bereich der hinteren Kante über den Sitz und tragen mit diesen Abschnitten die Rückenlehne. Dabei ist die Ausgestaltung so, daß die an die Schwenklager zwischen dem Sitz und den Schwenkhebeln in Richtung zur Rückenlehne anschließenden Abschnitte der Schwenkhebel eine Länge aufweisen, die größer ist als der Abstand der Schwenklager von der hinteren Kante des Sitzes, damit die Schwenkhebel die Neigungsveränderung des Sitzes nicht beeinträchtigen.The swivel levers are located below the seat and only protrude over the seat in the area of the rear edge and support the backrest with these sections. The design is such that the sections of the pivot levers adjoining the pivot bearings between the seat and the pivot levers in the direction of the backrest have a length which is greater than the distance of the pivot bearings from the rear edge of the seat, so that the pivot levers change the inclination of the Do not interfere with the seat.
Sitz und Rückenlehne sind um das Drehlager der Schwenkhebel am Lagerbock verdrehbar. In Verbindung mit dem verstellbaren Schwenklager des Sitzes an dem Lagerbock wird erreicht, daß der Sitz eine Art gegenläufige Bewegung ausführt, die zur Verkürzung des Abstandes zwischen der Rückenlehne und dem zugekehrten Ende des Sitzes führt. Dadurch ist der sogenannte "Auszieheffekt"beim Absenken des Sitzes eliminiert.The seat and backrest can be turned around the pivot bearing of the swivel lever on the bearing block. In connection with the adjustable pivot bearing of the seat on the bearing block, it is achieved that the seat performs a kind of opposite movement, which leads to the shortening of the distance between the backrest and the facing end of the seat. This eliminates the so-called "pull-out effect" when lowering the seat.
Um genügend Neigungsveränderung für den Sitz zu erhalten, sieht eine Ausgestaltung vor, daß der Lagerbock zur Schwenkachse des Sitzes hin in einem Winkel von etwa 20° ansteigt.In order to obtain sufficient change in inclination for the seat, one embodiment provides that the bearing block rises at an angle of approximately 20 ° to the pivot axis of the seat.
Die automatische Einstellung des Sitzes und der Rückenlehne in eine Ausgangsstellung wird nach einer Ausgestaltung dadurch erreicht, daß die Schwenkhebel im Bereich der die Rückenlehne tragenden Abschnitte miteinander verbunden sind und daß sich eine Gasfeder gelenkig an dem Lagerbock und einem die Abschnitte miteinander verbindenden Querträger abstützt.The automatic adjustment of the seat and the backrest in an initial position is achieved according to one embodiment in that the pivot levers are connected to one another in the region of the sections carrying the backrest and in that a gas spring is supported in an articulated manner on the bearing block and a crossbeam connecting the sections to one another.
Dieselbe Einstellung der Ausgangsstellung kann auch dadurch erreicht werden, daß in den Drehlagern zwischen den Schwenkhebeln und dem Lagerbock eine Drehstabfeder untergebracht ist, oder daß sich die Schwenklager zwischen dem Sitz und den Schwenkhebeln mittels einer Druckfeder am Lagerbock abstützen.The same setting of the starting position can also be achieved in that a torsion bar spring is accommodated in the pivot bearings between the pivot levers and the bearing block, or that the pivot bearings are supported on the bearing block between the seat and the pivot levers by means of a compression spring.
Die Erfindung wird anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels näher erläutert. Es zeigt:
- Fig. 1 eine schematische Teilseitenansicht zur Erläuterung des Verstellmechanismus,
- Fig. 2 die Unteransicht auf den Verstellmechanismus und
- Fig. 3 schematisch den Verstellbereich des Sitzes und der Rückenlehne mit Alternativen zur Einstellung des Stuhles in die Ausgangsstellung.
- 1 is a schematic partial side view for explaining the adjustment mechanism,
- Fig. 2 is the bottom view of the adjustment mechanism and
- Fig. 3 shows schematically the adjustment range of the seat and the backrest with alternatives for setting the chair in the starting position.
In Fig. 1 ist in Seitenansicht schematisch der Verstellmechanismus des Stuhles nach der Erfindung gezeigt. Von dem Stuhlgestell ist nur der am oberen Ende angebrachte Lagerbock 10 gezeigt. Dieser Lagerbock 10 ist zur vorderen Kante des Sitzes 14 hin, von dem nur der Sitzträger gezeigt ist, mit einem Winkel von etwa 20° ansteigend. Die horizontale Schwenkachse 28 des Sitzes 14 ist in Langlöchern begrenzt nach unten und in Richtung zur Rückenlehne hin verstellbar geführt. In der Ausgangsstellung des Stuhles steht die Schwenkachse an dem oberen vordern Ende der Langlöcher 11. Etwa ein Drittel der Tiefe des Sitzes 14 von der hinteren Kante des Sitzes 14 entfernt sind auf der Unterseite des Sitzes 14 die beiden Schwenkhebel 17 drehbar gelagert.In Fig. 1, the adjustment mechanism of the chair according to the invention is shown schematically in side view. Of the chair frame, only the
Wie Fig. 2 zeigt, sind die beiden Schwenkhebel 17 im Bereich des Schwenklagers 21 die beiden Schwenkhebel 17 mittels des Querträgers 25 fest miteinander verbunden. Die Enden des Querträgers 25 sind rechtwinklig nach unten abgebogen und gelenkig mit den Lagerlaschen 16 des Sitzes 14 verbunden, wie die Schrauben andeuten, die durch eine Bohrung der Lagerlaschen 16 hindurch geführt und mit den abgebogenen Enden des Querträgers 25 verschraubt sind. Von dem Schwenklager 21 aus erstrecken sich die Schwenkhebel 17 mit den Abschnitten 18 in Richtung zur Vorderseite des Sitzes 14 und sind etwa unterhalb der Mitte des Sitzes 14 mit dem Lagerbock 10 drehbar verbunden, wie die Drehlager 12 zeigen. Von dem Schwenklager 21 aus erstrecken sich die Schwenkhebel 17 in Richtung zur Rückseite des Sitzes 14 und verlaufen in der Ausgangsstellung des Stuhles mit den Abschnitten 19 etwa horizontal. Die Abschnitte 19 erstrecken sich über die hintere Kante des Sitzes 14 hinaus und gehen in die etwa rechtwinklig nach oben abgebogenen Abschnitte 20 über. An diesen Abschnitten 20 ist die Rückenlehne 22 fest angebracht, von der auch nur der Rückenlehnenträger gezeigt ist. Die Abschnitte 16 und 19 der Schwenkhebel 17 schließen zur Standfläche des Stuhles hin einen Winkel α von etwa 150° bis etwa 170° ein.2 shows, the two pivot levers 17 in the region of the pivot bearing 21, the two
Wie Fig. 2 zeigt, sind die Abschnitte 20 der Schwenkhebel 17 über den Querträger 27 fest miteinander verbunden. Die Gasfeder 24 stützt sich am hinteren Ende des Lagerbockes 10 und an dem Querträger 27 gelenkig ab, wie die Gelenke 13 und 23 zeigen. Die Gasfeder 24 drückt die Schwenkhebel 17 entgegen dem Uhrzeigersinn um die Schwenklager 21 nach oben, bis die Abschnitte 19 an der Unterseite des Sitzes 14 anliegen und der Stuhl seine Ausgangsstellung einnimmt. Am vorderen Ende des Lagerbockes 10 ist der Querträger 26 angebracht, der mit seinen Enden rechtwinklig nach unten abgewinkelt ist. In den abgewinkelten Enden sind die Langlöcher 11 eingebracht. Die Laschen 15 des Sitzes 14 überdecken die Enden des Querträgers 26 auf deren Außenseiten. Schrauben bilden die Schwenkachse, die von den Innenseiten der Enden des Querträgers 26 in die Langlöcher 11 eingeführt und in Gewindebohrungen der Laschen 15 eingeschraubt sind.As shown in FIG. 2, the
In Fig. 3 ist neben der Ausgangsstellung des Stuhles mit dem Sitz 14 und der Rückenlehne 22 auch die abgesenkte Stellung des Sitzes 14′ und der nach hinten geneigten Rückenlehne 22′ eingezeichnet. Dabei ist deutlich zu erkennen, daß sich der Abstand der einander zugekehrten Enden von Sitz 14 und Rückenlehne 22 beim Einstellen in die abgesenkte Stellung ändert, wie anhand des Sitzes 14′ und der Rückenlehne 22′ gezeigt ist. So kann dieser Abstand von 62 mm z.B. bis auf etwa 30 mm reduziert werden. Die horizontale Neigung des Sitzes 14 von etwa 2° kann bis auf etwa 6° zunehmen, wobei der Sitz 14 stets zur Rückenlehne 22 bzw. 22′ hin abfällt. Hatte die Rückenlehne 22 in der Ausgangsstellung eine Neigung von etwa 7°, dann ist diese Neigung in der abgesenkten Stellung auf etwa 18° angestiegen, d.h. die Neigung der Rückenlehne 22 hat gegenüber der Neigung des Sitzes 14 überproportional zugenommen. Bei der Absenkung des Sitzes 14 verschiebt sich die horizontale Schwenkachse 28 des Sitzes 14 in den Langlöchern 11 zu den unteren, hinteren Enden der Langlöcher 11 hin in die Stellung 28′, wodurch eine Art Gegenbewegung des Sitzes 14 um die Schwenklager 21 ausgeführt wird, die letztlich für die Relativbewegung zwischen Sitz 14 und Rückenlehne 22 mit verantwortlich ist. Die Schwenklager 21 verlagern ihre Position nach 21′ und die Schwenkhebel 17 werden um die Drehlager 12 verschwenkt, bis sie ihre gestrichelte Stellung 17′ einnehmen. Die Gasfeder 24 wird dabei zusammengedrückt, da das Gelenk 13 seine Lage beibehält und das Gelenk 23 in die Stellung 23′ abgesenkt wird. Die Abschnitte der Schwenkhebel 17 nehmen in der abgesenkten Stellung die Positionen 18′, 19′ und 20′ ein.In Fig. 3, in addition to the initial position of the chair with the
Die Gasfeder 24 übt eine Rückstellkraft auf die Schwenkhebel 17 aus, die den Sitz 14 und die Rückenlehne in die Ausgangsstellung zurückstellt. Die Rückstellkraft kann auch mittels Drehstabfedern 29 aufgebracht werden, die in die Drehlager 12 eingebracht sind. Auch die Schwenkachse 28 kann derartige Drehstabfedern aufnehmen. Die Schwenklager 21 können auch mittels einer Druckfeder 30 am Lagerbock 10 abgestützt sein, die die Rückstellkraft auf die Schwenkhebel 17 und den Sitz 14 ausübt.The
Claims (6)
dadurch gekennzeichnet,
daß die Schwenkhebel (17) etwa ein Viertel der Tiefe vom hinteren Ende des Sitzes (14) entfernt am Sitz angelenkt sind,
daß die zur Rückenlehne (22) gerichteten Enden der Schwenkhebel (17) zwei etwa im rechten Winkel zueinander stehende Abschnitte (19,20) aufweisen,
daß die Rückenlehne (22) fest oder vertikal stufig oder stufenlos verstellbar mit den das freie Ende der Schwenkhebel (17) bildenden Abschnitten (20) verbunden ist und
daß die anderen Enden der Schwenkhebel (17) etwa unterhalb der Sitzmitte an dem Lagerbock (10) angelenkt sind und zur Standfläche hin zu dem anschließenden Abschnitt (19) der Schwenkhebel (17) in einem stumpfen Winkel (α) von etwa 150° bis 170° stehen.1.Chair, in particular work or office chair, with a seat which can be swiveled in the front region about a horizontal pivot axis and whose inclination can be changed and, depending on the change in inclination of the seat, the inclination of the backrest which can be changed disproportionately, in the case of an increasing inclination of the seat the backrest approaches the facing end of the seat, in which the pivot axis of the seat on the bearing block of the chair frame can be adjusted downwards and in the direction of the backrest, and in which the seat is articulated with pivoting levers, one end of which is fixed and non-rotatable on the backrest attached and the other ends of which are rotatably mounted on the bearing block,
characterized,
that the pivot levers (17) are hinged to the seat about a quarter of the depth away from the rear end of the seat (14),
that the ends of the swivel levers (17) directed towards the backrest (22) have two sections (19, 20) approximately at right angles to one another,
that the backrest (22) is fixed or vertically stepped or continuously adjustable with the free end of the swivel lever (17) forming sections (20) and
that the other ends of the pivot levers (17) are articulated approximately below the center of the seat on the bearing block (10) and towards the standing surface towards the subsequent section (19) of the pivot levers (17) at an obtuse angle (α) of approximately 150 ° to 170 ° stand.
dadurch gekennzeichnet,
daß der Lagerbock (10) zur Schwenkachse (28) des Sitzes (14) hin in einem Winkel von etwa 20° ansteigt.2. Chair according to claim 1,
characterized,
that the bearing block (10) to the pivot axis (28) of the seat (14) rises at an angle of about 20 °.
dadurch gekennzeichnet,
daß die Schwenkhebel (17) im Bereich der die Rückenlehne (22) tragenden Abschnitte (20) miteinander verbunden (27) sind und
daß sich eine Gasfeder (24) gelenkig (13,23) an dem Lagerbock (10) und einem die Abschnitte (20) miteinander verbindenen Querträger (27) abstützt.3. Chair according to claim 1 or 2,
characterized,
that the swivel levers (17) are connected to each other (27) in the region of the sections (20) carrying the backrest (22) and
that a gas spring (24) is articulated (13, 23) on the bearing block (10) and a cross member (27) connecting the sections (20) is supported.
dadurch gekennzeichnet,
daß in den Drehlagern (12) zwischen den Schwenkhebeln (17) und dem Lagerbock (10) eine Drehstabfeder (29) untergebracht ist.4. Chair according to claim 1 or 2,
characterized,
that a torsion bar spring (29) is housed in the pivot bearings (12) between the pivot levers (17) and the bearing block (10).
dadurch gekennzeichnet,
daß sich die Schwenklager (21) zwischen dem Sitz (14) und den Schwenkhebeln (17) mittels einer Druckfeder (30) am Lagerbock (10) abstützen.5. Chair according to claim 1 or 2,
characterized,
that the pivot bearings (21) are supported between the seat (14) and the pivot levers (17) by means of a compression spring (30) on the bearing block (10).
dadurch gekennzeichnet,
daß die an die Schwenklager (21) zwischen dem Sitz (14) und den Schwenkhebeln (17) in Richtung zur Rückenlehne (22) anschließenden Abschnitte (19) der Schwenkhebel (17) eine Länge aufweisen, die größer ist als der Abstand der Schwenklager (21) von der hinteren Kante des Sitzes (14).6. Chair according to one of claims 1 to 5,
characterized,
that the sections (19) of the swivel levers (17) adjoining the swivel bearings (21) between the seat (14) and the swivel levers (17) in the direction of the backrest (22) have a length which is greater than the distance between the swivel bearings ( 21) from the rear edge of the seat (14).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893916474 DE3916474A1 (en) | 1989-05-20 | 1989-05-20 | CHAIR, ESPECIALLY WORK OR OFFICE CHAIR |
| DE3916474 | 1989-05-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0399251A1 true EP0399251A1 (en) | 1990-11-28 |
| EP0399251B1 EP0399251B1 (en) | 1995-03-15 |
Family
ID=6381056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19900108266 Expired - Lifetime EP0399251B1 (en) | 1989-05-20 | 1990-04-30 | Chair, particularly work- or office-chair |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5308144A (en) |
| EP (1) | EP0399251B1 (en) |
| JP (1) | JP2791708B2 (en) |
| CA (1) | CA2017148C (en) |
| DE (2) | DE3916474A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0488278A1 (en) * | 1990-11-29 | 1992-06-03 | Martin Bock Kunststoffverarbeitung | Seat support for an office chair |
| GB2275867A (en) * | 1993-01-27 | 1994-09-14 | Production Tools | Seat recliner mechanism |
| EP0639479A1 (en) * | 1993-08-20 | 1995-02-22 | L.A. Rumbold Limited | Passenger seat |
| EP1066775A1 (en) * | 1999-07-06 | 2001-01-10 | Röder, Peter | Chair |
| EP1219207A1 (en) * | 1999-10-21 | 2002-07-03 | Interstuhl Büromöbel GmbH & Co. KG | Chair, particularly office chair |
| EP1256293A3 (en) * | 2001-05-11 | 2003-11-26 | Armin Sander | Chair, particularly office-chair |
| WO2006103000A1 (en) * | 2005-03-26 | 2006-10-05 | Armin Sander | Seat in particular office chair |
| EP2129262A1 (en) * | 2007-03-13 | 2009-12-09 | Sapdesign AS | Furniture device with adjustable angle between the seat and the back of the piece of furniture |
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| IL103477A0 (en) * | 1992-10-20 | 1993-03-15 | Paltechnica Nitzanim | Office and like chairs |
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| WO1994028768A1 (en) * | 1993-06-11 | 1994-12-22 | Philip Louis Peach | A chair |
| DE4326609C2 (en) * | 1993-08-07 | 1996-03-28 | Taipei Design Center Duesseldo | Office swivel chair |
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| ATE173591T1 (en) * | 1993-11-01 | 1998-12-15 | Labofa As | OFFICE CHAIR WITH SYNCHRONOUS ADJUSTMENT OF SEAT AND BACKREST |
| DE4409098A1 (en) * | 1994-03-17 | 1995-09-21 | Froescher Gmbh & Co Kg | Incline adjustable chair |
| DE9410941U1 (en) * | 1994-07-08 | 1994-09-01 | Völkle, Rolf, 72290 Loßburg | Seating furniture with reclining seat and backrest |
| AT402602B (en) * | 1995-02-28 | 1997-07-25 | Eckhard Hansen Dipl Ing | CHAIR CHAIR |
| US5775774A (en) * | 1996-08-12 | 1998-07-07 | Okano; Hiroshi | Tilt mechanism for chairs |
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| JP3136280B2 (en) * | 1997-04-28 | 2001-02-19 | 株式会社いのうえアソシエーツ | Chair |
| DE19726160A1 (en) * | 1997-06-20 | 1998-12-24 | Johannes Uhlenbrock | Seating, in particular office swivel chair |
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| EP0136374A2 (en) * | 1983-10-05 | 1985-04-10 | Giroflex-Entwicklungs AG | Chair with an inclinable seat and back-rest |
| EP0263323A2 (en) * | 1986-10-07 | 1988-04-13 | Inaba Seisakusho Co., Ltd. | Sitting furniture |
| EP0281845A1 (en) * | 1987-02-25 | 1988-09-14 | Köhl Gmbh | Swivel chair or seat with synchronized inclination of backrest and seat |
| DE3724582A1 (en) * | 1987-07-24 | 1989-02-02 | Inaba Seisakusho Ltd | A piece of seating furniture |
| EP0303720A1 (en) * | 1987-08-14 | 1989-02-22 | Grammer Ag | Seat, in particular a work seat such as an office chair or vehicle seat |
| DE3735256A1 (en) * | 1987-10-17 | 1989-04-27 | Ljubomir Nikov | Chair or armchair with synchronously adjustable inclination of backrest and seat |
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| AU541109B2 (en) * | 1981-08-19 | 1984-12-13 | Giroflex Entwicklungs Ag | Chair |
| CH666171A5 (en) * | 1984-10-03 | 1988-07-15 | Giroflex Entwicklungs Ag | CHAIR WITH REAR TILTABLE SEAT AND BACKREST CARRIER. |
| DE8515221U1 (en) * | 1985-05-23 | 1986-05-22 | VOKO - Franz Vogt & Co, 6301 Pohlheim | Seating |
| DE8607194U1 (en) * | 1986-03-15 | 1986-04-30 | Drabert Söhne Minden (Westf.), 4950 Minden | Seating |
| DE8814409U1 (en) * | 1988-11-18 | 1989-01-26 | Roeder GmbH, 6000 Frankfurt | Chair, especially work or office chair |
-
1989
- 1989-05-20 DE DE19893916474 patent/DE3916474A1/en active Granted
-
1990
- 1990-04-30 EP EP19900108266 patent/EP0399251B1/en not_active Expired - Lifetime
- 1990-04-30 DE DE59008692T patent/DE59008692D1/en not_active Expired - Fee Related
- 1990-05-18 JP JP12702990A patent/JP2791708B2/en not_active Expired - Lifetime
- 1990-05-18 CA CA 2017148 patent/CA2017148C/en not_active Expired - Fee Related
-
1991
- 1991-07-15 US US07/730,243 patent/US5308144A/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0136374A2 (en) * | 1983-10-05 | 1985-04-10 | Giroflex-Entwicklungs AG | Chair with an inclinable seat and back-rest |
| EP0263323A2 (en) * | 1986-10-07 | 1988-04-13 | Inaba Seisakusho Co., Ltd. | Sitting furniture |
| EP0281845A1 (en) * | 1987-02-25 | 1988-09-14 | Köhl Gmbh | Swivel chair or seat with synchronized inclination of backrest and seat |
| DE3724582A1 (en) * | 1987-07-24 | 1989-02-02 | Inaba Seisakusho Ltd | A piece of seating furniture |
| EP0303720A1 (en) * | 1987-08-14 | 1989-02-22 | Grammer Ag | Seat, in particular a work seat such as an office chair or vehicle seat |
| DE3735256A1 (en) * | 1987-10-17 | 1989-04-27 | Ljubomir Nikov | Chair or armchair with synchronously adjustable inclination of backrest and seat |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0488278A1 (en) * | 1990-11-29 | 1992-06-03 | Martin Bock Kunststoffverarbeitung | Seat support for an office chair |
| GB2275867A (en) * | 1993-01-27 | 1994-09-14 | Production Tools | Seat recliner mechanism |
| EP0639479A1 (en) * | 1993-08-20 | 1995-02-22 | L.A. Rumbold Limited | Passenger seat |
| US5628547A (en) * | 1993-08-20 | 1997-05-13 | Britax Rumbold Limited | Passenger seat |
| EP1066775A1 (en) * | 1999-07-06 | 2001-01-10 | Röder, Peter | Chair |
| EP1219207A1 (en) * | 1999-10-21 | 2002-07-03 | Interstuhl Büromöbel GmbH & Co. KG | Chair, particularly office chair |
| EP1256293A3 (en) * | 2001-05-11 | 2003-11-26 | Armin Sander | Chair, particularly office-chair |
| WO2006103000A1 (en) * | 2005-03-26 | 2006-10-05 | Armin Sander | Seat in particular office chair |
| US7566097B2 (en) | 2005-03-26 | 2009-07-28 | Armin Sander | Chair, in particular office chair |
| AU2006228736A2 (en) * | 2005-03-26 | 2010-01-21 | Konig + Neurath Ag | Seat in particular office chair |
| AU2006228736B2 (en) * | 2005-03-26 | 2010-01-28 | Konig + Neurath Ag | Seat in particular office chair |
| EP2129262A1 (en) * | 2007-03-13 | 2009-12-09 | Sapdesign AS | Furniture device with adjustable angle between the seat and the back of the piece of furniture |
| EP2129262A4 (en) * | 2007-03-13 | 2011-12-21 | Sapdesign As | Furniture device with adjustable angle between the seat and the back of the piece of furniture |
| US8434822B2 (en) | 2007-03-13 | 2013-05-07 | Sapdesign As | Furniture device with adjustable angle between the seat and the back of the piece of furniture |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3916474A1 (en) | 1990-11-22 |
| CA2017148A1 (en) | 1990-11-20 |
| JP2791708B2 (en) | 1998-08-27 |
| DE3916474C2 (en) | 1992-02-13 |
| CA2017148C (en) | 2001-04-10 |
| DE59008692D1 (en) | 1995-04-20 |
| EP0399251B1 (en) | 1995-03-15 |
| JPH034807A (en) | 1991-01-10 |
| US5308144A (en) | 1994-05-03 |
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