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EP2149319A1 - Adjustable backrest - Google Patents

Adjustable backrest Download PDF

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Publication number
EP2149319A1
EP2149319A1 EP09009824A EP09009824A EP2149319A1 EP 2149319 A1 EP2149319 A1 EP 2149319A1 EP 09009824 A EP09009824 A EP 09009824A EP 09009824 A EP09009824 A EP 09009824A EP 2149319 A1 EP2149319 A1 EP 2149319A1
Authority
EP
European Patent Office
Prior art keywords
backrest
region
tiltable
frame
support
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
Application number
EP09009824A
Other languages
German (de)
French (fr)
Other versions
EP2149319B1 (en
Inventor
Markus Dörner
Klaus Maier
Siegfried Donner
Peter Maier
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.)
Sedus Stoll AG
Original Assignee
Sedus Stoll AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sedus Stoll AG filed Critical Sedus Stoll AG
Publication of EP2149319A1 publication Critical patent/EP2149319A1/en
Application granted granted Critical
Publication of EP2149319B1 publication Critical patent/EP2149319B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Supports for the head or the back
    • A47C7/40Supports for the head or the back for the back
    • A47C7/46Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • A47C7/462Supports 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

Definitions

  • the invention relates to a tiltable backrest, in particular for an office chair, with a shoulder region, a lumbar region and a pelvic area, wherein the backrest is flexible in at least one area and is connected to at least one upper and lower connecting element with a rigid back frame, wherein the upper connecting element is designed as a pivot bearing and the lower connecting element as a sliding bearing, and wherein the flexibility of the backrest is increased in the lumbar region, so that the lumbar region is bulged by curvature.
  • This office chair has a rigid, padded cushion support that extends from the pelvic area to the shoulder area.
  • the backrest has a cushion support towards flexible neck support, which is attached via a pivot bearing on a back frame.
  • the cushion support is also attached to the backrest frame in the pelvic area.
  • the backrest adapts in part to the movement of the person sitting on the chair and reclining. Except in the shoulder and neck area, however, this backrest is relatively rigid and can not, especially in the lumbar region optimally adapt. Also, in a reclining person, the head slightly pushed forward does not correspond to a relaxed posture.
  • WO 2007/073836 is a backrest with a bulging lumbar support described.
  • the bulge of the lumbar support is adjustable and can be adapted to the shape of the back. This is achieved by the backrest being flexible in the lordosis area and in the lower shoulder area, and by fixing the pelvic area at different heights, the bulge in the lordosis area is changed. Once set, the bulge does not change until it is reset.
  • This backrest can not automatically adapt to a changing posture of the person, eg sitting upright and leaning back.
  • the object of the invention is to provide a tiltable backrest mentioned above, which automatically and optimally adapts to the back while sitting, regardless of whether a person sitting upright or leaning back. At the same time the lordosis should always be supported.
  • this object is achieved in a tiltable backrest of the type mentioned above in that the pivot bearing is attached to the back of the back just below the shoulder area and connects the backrest with the upper portion of the back frame, the upper part of the backrest with respect to the Back frame can be tilted forwards or backwards.
  • the sliding bearing is attached to the back of the backrest in the pelvic region, whereby the pelvic region of the backrest can move vertically upwards or downwards in relation to the backrest frame.
  • the inventive arrangement of pivot bearing, sliding bearing and increased flexibility of the lumbar region leads to a coupling of the movements of the backrest in the shoulder area, lordosis and pelvic area.
  • the invention allows in each seating position an optimal, automatically adjusting adjustment of the backrest to the back of the person. Depending on where the person is applying pressure on the backrest, the backrest deforms accordingly, so that the lordosis is always well supported.
  • the backrest In the unloaded state, the backrest can be preformed in the lumbar region so that it is bent at an angle between 25 and 30 degrees and thereby bulges in the lumbar region.
  • the lumbar region may be flattened and displaced backwards by 10 to 20 degrees, the upper region of the backrest above the pivot bearing displaced forwards, and the pelvic region of the backrest along the sliding bearing be moved down.
  • the backrest likewise adapts to the back when the person reclines through pressure on the shoulder area.
  • the backrest in the lumbar region can be bent by an additional 10 to 20 degrees while the lumbar support projecting further, the upper region of the backrest above the pivot bearing being displaced to the rear, and the pelvic region of the backrest Backrest along the sliding bearing to be moved upwards.
  • the backrest according to the invention adapts when the respective back form is inserted and guarantees an optimal support function in the lordosis and shoulder area when leaning back.
  • the backrest comprises a cushion support and a padding, wherein the padding support has two side bars connected to a plurality of strip-shaped ribs, and wherein the side spars are more flexible in the lordosis area, for example by rejuvenation, than in the upper and lower areas.
  • a pivot bearing and a sliding bearing can be attached as a connecting element for the back frame with the cushion support on the back of the side rails.
  • the back frame may have two diagonal, intersecting struts, which the connects upper and lower connecting elements with each other, wherein the struts are connected to each other in the crossing point.
  • the backrest can additionally have a neck support, wherein in the shoulder region and the region of the neck support it can have an "S" shape adapted to a shoulder and neck.
  • the movement of the neck support behaves the same way as the shoulders when seated and reclined, thus guaranteeing that the head is always optimally supported.
  • Fig. 1 shows a side view of an office chair with an inventive tiltable backrest.
  • the office chair has a seat 1, which is coupled to a synchronizing mechanism 2. Also on the synchronizing mechanism, a backrest support 3 is fixed, which in turn holds the rigid back frame 30.
  • the backrest 10 is connected to the back frame 30. Backrest 10 and backrest frame 30 can be tilted via the synchronizing mechanism 2.
  • the backrest 10 comprises a neck support 11, a shoulder region 12, a lordosis region 13 and a pelvic region 14, and is connected via upper and lower connecting elements 20, 25 connected to the back frame 30.
  • Neck support 11 and shoulder region 12 are S-shaped and adapted to the neck and the shoulder.
  • the upper connecting element 20 is a pivot bearing, which according to the invention is mounted directly below the shoulder region 12 on the backrest.
  • the upper portion of the backrest 10, from the neck support 11 to above the lumbar region 13 acts as a lever and can rotate about the pivot point of the pivot bearing 20, so that the shoulder portion 12 with the neck support 11 tilt forward or backward relative to the back frame 30 can.
  • the lower connecting element 25 is a sliding bearing, which is mounted in the pool area 14 of the backrest 10. In this sliding bearing 25, the lower region of the backrest can move freely upwards and downwards relative to the backrest frame 30. Furthermore, the flexibility of the backrest 10 in the lumbar region 13 is increased, so that the lumbar region 13 is able to be deflected by bending the backrest 10 and can be moved forwards or backwards in relation to the backrest frame 30.
  • Fig. 2 shows the backrest 10 with the back frame 30 and the backrest support 3 in three different states: In the unloaded state ( Fig. 2a ), when sitting in a person or when sitting upright ( Fig. 2b ) and in the state when reclining a person ( Fig. 2c ).
  • the illustrated movements S1, S2, S3, S4, D1, D2 are to be understood in relation to the unloaded state and relative to the back frame 30.
  • the various inclinations of the back frame 30 relative to the seat 1 and the Synchronmechnaik 2 of the office chair are not shown.
  • the backrest 10 is preformed so that it is in the unloaded state ( Fig. 2a ) is arched in the lumbar region 13.
  • Fig. 3 shows a preferred embodiment of the cushion support 40 of the backrest 10 with the back frame 30 and the backrest support 3 in a perspective view.
  • the padding 47 is in Fig. 3 not shown.
  • the cushion support 40 has two parallel side rails 41, which are interconnected by a plurality of strip-shaped ribs 42.
  • the side rails 41 are tapered 43 so that they have an increased flexibility compared to the other areas of the side rails 41.
  • lumbar region 13 is a, possibly displaceable, lumbar support 45 is attached.
  • a pivot bearing 20 and a sliding bearing 25 are attached to the back of both side rails 41.
  • the pivot bearing 20 are located just below the shoulder portion 12 of the backrest 10.
  • the sliding bearing 25 are located in the pool area 14 of the backrest 10.
  • the two pivot bearings 20 and the two sliding bearings 25 are connected to each other via the back frame 30.
  • the back frame 30 is pivotally mounted on the backrest support 3 on the synchronous mechanism 2, such as Fig. 1 and Fig. 4 shows.
  • Fig. 4 shows a rear view of an office chair with an inventive tiltable backrest 10 with backrest frame 30 which is pivotally mounted on the backrest support 3 to the synchronizing mechanism 2.
  • the back frame 30 has two diagonal, intersecting struts 31, wherein the struts 31 are connected to each other at the intersection point 32.
  • a transverse connection 33 connects the lower ends of the two struts 31.
  • Fig. 5 shows the cushion support 40 with the back frame 30 and the backrest support 3 in a sectional view through a side rail 41.
  • the backrest support 3 and the struts 31 of the back frame 30 are shown in the same sectional plane.
  • the padding 47 is shown.
  • the sliding bearing 25 comprises a bearing block 26 which forms a T in its front end.
  • the bearing block 26 is held between the backrest carrier 3 and the back frame 30 by positive locking.
  • the cross bar of the T-shaped end of the bearing block 26 is guided in a recess 27 in the side rail 41 of the cushion support 40, which is covered by a bearing cap.
  • the bearing cap has a vertical cutout for the displacement, and at the top for mounting a horizontally oriented window for mounting the crossbar of the bearing block 26.
  • the neck support may also be omitted. It is not necessary for the described function of the backrest, as the pressure during recline (F2 in Fig. 2c ) is exerted on the shoulder region 12 of the backrest 10. If a neck support 11 is present, pressure F2 can also be exerted by means of the neck and / or the head, which increases the already described leverage about the pivot bearing 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs Characterized By Structure (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The backrest (10) has a shoulder area (12), a lordosis area (13) and a pelvic area (14), where the backrest is connected to a rigid backrest frame (30) at upper and lower connecting elements designed as a pivot bearing (20) and a slide bearing (25), respectively. The pivot bearing is fastened below the area (12), so that an upper part of the backrest is inclinable to the front or the rear with respect to the frame. The slide bearing is fastened to a rear side of the backrest and in the area (14), which is freely movable in a vertically upward or downward manner with respect to the frame.

Description

TECHNISCHES GEBIETTECHNICAL AREA

Die Erfindung bezieht sich auf eine neigbare Rückenlehne, insbesondere für einen Bürostuhl, mit einem Schulterbereich, einem Lordosenbereich und einem Beckenbereich, wobei die Rückenlehne in mindestens einem Bereich flexibel ist und an jeweils mindestens einem oberen und unteren Verbindungselement mit einem starren Lehnenrahmen verbunden ist, wobei das obere Verbindungselement als Drehlager und das untere Verbindungselement als Schiebelager ausgebildet ist, und wobei die Flexibilität der Rückenlehne im Lordosenbereich erhöht ist, so dass der Lordosenbereich durch Krümmung vorwölbbar ist.The invention relates to a tiltable backrest, in particular for an office chair, with a shoulder region, a lumbar region and a pelvic area, wherein the backrest is flexible in at least one area and is connected to at least one upper and lower connecting element with a rigid back frame, wherein the upper connecting element is designed as a pivot bearing and the lower connecting element as a sliding bearing, and wherein the flexibility of the backrest is increased in the lumbar region, so that the lumbar region is bulged by curvature.

STAND DER TECHNIKSTATE OF THE ART

Im Handel erhältlich ist ein Bürostuhl mit Synchronmechanismus und neigbarer Rückenlehne. Dieser Bürostuhl weist einen starren, gepolsterten Polsterträger auf, welcher sich vom Beckenbereich bis zum Schulterbereich erstreckt. Zusätzlich weist die Rückenlehne eine zum Polsterträger hin flexible Nackenstütze auf, welche über ein Drehlager an einem Lehnenrahmen befestigt ist. Der Polsterträger ist im Beckenbereich ebenfalls am Lehnenrahmen befestigt. Beim Zurücklehnen einer auf dem Stuhl sitzenden Person neigt sich die Rückenlehne und der Lehnenrahmen nach hinten. Dabei sinkt der Schulterbereich der Rückenlehne relativ zum Lehnenrahmen leicht ein. Die Nackenstütze wird durch den Lehnenrahmen gehalten und relativ zum Schulterbereich der Rückenlehne leicht nach vorne gedrückt und stützt dabei den Kopf. Polsterträger und Nackenstütze vollziehen eine Art Klappbewegung. Die Rückenlehne passt sich teilweise der Bewegung der auf dem Stuhl sitzenden und sich zurücklehnenden Person an. Ausser im Schulter- und Nackenbereich ist diese Rückenlehne jedoch relativ starr und kann sich besonders im Lordosenbereich nicht optimal anpassen. Auch entspricht bei einer zurücklehnenden Person der leicht nach vorne gedrückte Kopf keiner entspannten Haltung.Commercially available is an office chair with synchronous mechanism and tilting backrest. This office chair has a rigid, padded cushion support that extends from the pelvic area to the shoulder area. In addition, the backrest has a cushion support towards flexible neck support, which is attached via a pivot bearing on a back frame. The cushion support is also attached to the backrest frame in the pelvic area. When leaning back a person sitting on the chair, the backrest and the back frame tilts backwards. In this case, the shoulder region of the backrest decreases slightly relative to the backrest frame. The neck support is held by the back frame and slightly pushed forward relative to the shoulder region of the backrest, supporting the head. Upholstery and neck support make a kind of folding movement. The backrest adapts in part to the movement of the person sitting on the chair and reclining. Except in the shoulder and neck area, however, this backrest is relatively rigid and can not, especially in the lumbar region optimally adapt. Also, in a reclining person, the head slightly pushed forward does not correspond to a relaxed posture.

In WO 2007/073836 ist eine Rückenlehne mit einer ausgewölbten Lordosenstütze beschrieben. Die Auswölbung der Lordosenstütze ist verstellbar und kann der Rückenform angepasst werden. Dies wird erreicht, indem die Rückenlehne im Lordosenbereich und im unteren Schulterbereich flexibel ist und durch Fixieren des Beckenbereiches in unterschiedlichen Höhen die Auswölbung im Lordosenbereich verändert wird. Einmal eingestellt ändert sich die Auswölbung bis zum erneuten Einstellen nicht. Diese Rückenlehne kann sich nicht automatisch einer sich ändernden Haltung der Person, z.B. aufrechtes Sitzen und Zurücklehnen, anpassen.In WO 2007/073836 is a backrest with a bulging lumbar support described. The bulge of the lumbar support is adjustable and can be adapted to the shape of the back. This is achieved by the backrest being flexible in the lordosis area and in the lower shoulder area, and by fixing the pelvic area at different heights, the bulge in the lordosis area is changed. Once set, the bulge does not change until it is reset. This backrest can not automatically adapt to a changing posture of the person, eg sitting upright and leaning back.

DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION

Aufgabe der Erfindung ist es, eine eingangs genannte neigbare Rückenlehne anzugeben, welche sich während dem Sitzen automatisch und optimal dem Rücken anpasst, unabhängig davon, ob eine Person in aufrechter Haltung sitzt oder zurücklehnt. Dabei soll die Lordose immmer opitmal gestützt sein.The object of the invention is to provide a tiltable backrest mentioned above, which automatically and optimally adapts to the back while sitting, regardless of whether a person sitting upright or leaning back. At the same time the lordosis should always be supported.

Erfindungsgemäss wird diese Aufgabe bei einer neigbaren Rückenlehne der eingangs genannten Art dadurch gelöst, dass das Drehlager an der Rückseite der Rückenlehne knapp unterhalb des Schulterbereiches befestigt ist und die Rückenlehne mit dem oberen Bereich des Lehnenrahmens verbindet, wobei der obere Teil der Rückenlehne in Bezug auf den Lehnenrahmen nach vorne oder nach hinten neigbar ist. Das Schiebelager ist an der Rückseite der Rückenlehne im Beckenbereich befestigt, wobei sich der Beckenbereich der Rückenlehne in Bezug auf den Lehnenrahmen vertikal nach oben oder nach unten frei verschieben kann.According to the invention this object is achieved in a tiltable backrest of the type mentioned above in that the pivot bearing is attached to the back of the back just below the shoulder area and connects the backrest with the upper portion of the back frame, the upper part of the backrest with respect to the Back frame can be tilted forwards or backwards. The sliding bearing is attached to the back of the backrest in the pelvic region, whereby the pelvic region of the backrest can move vertically upwards or downwards in relation to the backrest frame.

Die erfindungsgemässe Anordnung von Drehlager, Schiebelager und erhöhter Flexibilität des Lordosenbereiches führt zu einer Kopplung der Bewegungen der Rückenlehne im Schulterbereich, Lordosenbereich und Beckenbereich. Die Erfindung erlaubt in jeder Sitzposition eine optimale, sich automatisch einstellende Anpassung der Rückenlehne an den Rücken der Person. Je nachdem, wo durch die Person Druck auf die Rückenlehne ausgeübt wird, verformt sich die Rücklehne entsprechend, so dass die Lordose immer gut gestützt ist.The inventive arrangement of pivot bearing, sliding bearing and increased flexibility of the lumbar region leads to a coupling of the movements of the backrest in the shoulder area, lordosis and pelvic area. The invention allows in each seating position an optimal, automatically adjusting adjustment of the backrest to the back of the person. Depending on where the person is applying pressure on the backrest, the backrest deforms accordingly, so that the lordosis is always well supported.

Im unbelasteten Zustand kann die Rückenlehne im Lordosenbereich so vorgeformt sein, dass sie mit einem Winkel zwischen 25 und 30 Grad gebogen ist und dabei im Lordosenbereich vorgewölbt ist.In the unloaded state, the backrest can be preformed in the lumbar region so that it is bent at an angle between 25 and 30 degrees and thereby bulges in the lumbar region.

Durch die erfindungsgemässe Anordnung von Drehlager, flexiblem Lordosenbereich und Schiebelager ergibt sich, dass sich die Rückenlehne beim Einsitzen einer Person durch Druck auf den Lordosenbereich dem Rücken der Person anpasst. Dabei kann, in Bezug auf den unbelasteten Zustand und relativ zum Lehnenrahmen, der Lordosenbereich um 10 bis 20 Grad abgeflacht und nach hinten verlagert sein, der obere Bereich der Rückenlehne oberhalb des Drehlagers nach vorne verlagert sein, und der Beckenbereich der Rückenlehne entlang dem Schiebelager nach unten verschoben sein.Due to the inventive arrangement of pivot bearing, flexible lumbar region and sliding bearing results in that the backrest while sitting a person by pressure on the lordosis adjusts the back of the person. In this case, in relation to the unloaded state and relative to the backrest frame, the lumbar region may be flattened and displaced backwards by 10 to 20 degrees, the upper region of the backrest above the pivot bearing displaced forwards, and the pelvic region of the backrest along the sliding bearing be moved down.

Weiter ergibt sich erfindungsgemäss, dass sich die Rückenlehne beim Zurücklehnen der Person durch Druck auf den Schulterbereich ebenfalls dem Rücken anpasst. Dabei kann, in Bezug auf den unbelasteten Zustand und relativ zum Lehnenrahmen, die Rückenlehne im Lordosenbereich um zusätzliche 10 bis 20 Grad gebogen sein und dabei die Lordosenstütze weiter vorstehen, der obere Bereich der Rückenlehne oberhalb des Drehlagers nach hinten verlagert sein, und der Beckenbereich der Rückenlehne entlang dem Schiebelager nach oben verschoben sein.Furthermore, according to the invention, the backrest likewise adapts to the back when the person reclines through pressure on the shoulder area. In this case, in relation to the unloaded state and relative to the backrest frame, the backrest in the lumbar region can be bent by an additional 10 to 20 degrees while the lumbar support projecting further, the upper region of the backrest above the pivot bearing being displaced to the rear, and the pelvic region of the backrest Backrest along the sliding bearing to be moved upwards.

Die erfindungsgemässe Rückenlehne passt sich beim Einsitzen der jeweiligen Rückenform an und garantiert beim Zurücklehnen eine optimale Stützfunktion im Lordosen und Schulterbereich.The backrest according to the invention adapts when the respective back form is inserted and guarantees an optimal support function in the lordosis and shoulder area when leaning back.

In einer bevorzugten Ausführungsform umfasst die Rückenlehne einen Polsterträger und eine Polsterung, wobei der Polsterträger zwei mit mehreren leistenförmigen Rippen verbundene Seitenholme aufweist, und wobei die Seitenholme im Lordosenbereich, z.B. durch Verjüngung, flexibler sind als im oberen und unteren Bereich. Jeweils ein Drehlager und ein Schiebelager kann als Verbindungselement für den Lehnenrahmen mit dem Polsterträger rückseitig an den Seitenholmen angebracht sein. Der Lehnenrahmen kann zwei diagonale, sich kreuzende Streben aufweisen, welche die oberen und unteren Verbindungselemente miteinander verbindet, wobei die Streben in deren Kreuzungspunkt miteinander verbunden sind.In a preferred embodiment, the backrest comprises a cushion support and a padding, wherein the padding support has two side bars connected to a plurality of strip-shaped ribs, and wherein the side spars are more flexible in the lordosis area, for example by rejuvenation, than in the upper and lower areas. In each case a pivot bearing and a sliding bearing can be attached as a connecting element for the back frame with the cushion support on the back of the side rails. The back frame may have two diagonal, intersecting struts, which the connects upper and lower connecting elements with each other, wherein the struts are connected to each other in the crossing point.

In einer weiteren Ausführungsform kann die Rückenlehne zusätzlich eine Nackenstütze aufweisen, wobei sie im Schulterbereich und dem Bereich der Nackenstütze eine, einer Schulter und Nacken angepasste, s-Form aufweisen kann. Die Bewegung der Nackenstütze verhält sich beim Einsitzten und Zurücklehnen gleich wie der Schulterbereich und garantiert so, dass auch der Kopf immer optimal gestützt ist.In a further embodiment, the backrest can additionally have a neck support, wherein in the shoulder region and the region of the neck support it can have an "S" shape adapted to a shoulder and neck. The movement of the neck support behaves the same way as the shoulders when seated and reclined, thus guaranteeing that the head is always optimally supported.

KURZE ERLÄUTERUNG DER FIGURENBRIEF EXPLANATION OF THE FIGURES

Die Erfindung soll nachfolgend anhand von Ausführungsbeispielen im Zusammenhang mit der Zeichnung näher erläutert werden. Es zeigen:

Fig. 1
eine Seitenansicht eines Bürostuhls mit einer erfindungsgemässen Rückenlehne;
Fig. 2
eine Seitenansicht der Rückenlehne mit Lehnenrahmen und Lehnenträger im unbelasteten Zustand (2a), beim Einsitzen (2b) und beim Zurücklehnen (2c);
Fig. 3
eine perspektivische Ansicht des Polsterträgers der Rückenlehne mit Lehnenrahmen, Lehnenträger und ohne Polsterung;
Fig. 4
eine Rückansicht des Bürostuhls aus Fig. 1; und
Fig. 5
den Polsterträger mit Lehnenrahmen und Lehnenträger aus Fig. 3 in einer Schnittdarstellung durch einen Seitenholm.
The invention will be explained in more detail with reference to embodiments in conjunction with the drawings. Show it:
Fig. 1
a side view of an office chair with a backrest according to the invention;
Fig. 2
a side view of the backrest with back frame and backrest support in the unloaded state (2a), when sitting (2b) and when leaning back (2c);
Fig. 3
a perspective view of the cushion support of the backrest with backrest frame, backrest support and without padding;
Fig. 4
a rear view of the office chair Fig. 1 ; and
Fig. 5
the upholstery support with backrest frame and backrest support Fig. 3 in a sectional view through a side rail.

WEGE ZUR AUSFÃœHRUNG DER ERFINDUNGWAYS FOR CARRYING OUT THE INVENTION

Fig. 1 zeigt eine Seitenansicht eines Bürostuhls mit einer erfindungsgemässen neigbaren Rückenlehne. Der Bürostuhl weist einen Sitz 1 auf, welcher an eine Synchronmechanik 2 gekoppelt ist. Ebenfalls an der Synchronmechanik ist ein Lehnenträger 3 befestigt, welcher wiederum den starren Lehnenrahmen 30 hält. Die Rückenlehne 10 ist mit dem Lehnenrahmen 30 verbunden. Rückenlehne 10 und Lehnenrahmen 30 sind über die Synchronmechanik 2 neigbar. Die Rückenlehne 10 umfasst eine Nackenstütze 11, einen Schulterbereich 12, einen Lordosenbereich 13 und einen Beckenbereich 14, und ist über obere und untere Verbindungselemente 20, 25 mit dem Lehnenrahmen 30 verbunden. Nackenstütze 11 und Schulterbereich 12 sind s-förming ausgebildet und dem Nacken und der Schulter angepasst. Fig. 1 shows a side view of an office chair with an inventive tiltable backrest. The office chair has a seat 1, which is coupled to a synchronizing mechanism 2. Also on the synchronizing mechanism, a backrest support 3 is fixed, which in turn holds the rigid back frame 30. The backrest 10 is connected to the back frame 30. Backrest 10 and backrest frame 30 can be tilted via the synchronizing mechanism 2. The backrest 10 comprises a neck support 11, a shoulder region 12, a lordosis region 13 and a pelvic region 14, and is connected via upper and lower connecting elements 20, 25 connected to the back frame 30. Neck support 11 and shoulder region 12 are S-shaped and adapted to the neck and the shoulder.

Das obere Verbindungselement 20 ist ein Drehlager, welches erfindungsgemäss direkt unterhalb des Schulterbereichs 12 an der Rückenlehne angebracht ist. Der obere Bereich der Rückenlehne 10, von der Nackenstütze 11 bis oberhalb des Lordosenbereiches 13 wirkt als Hebel und kann sich um den Drehpunkt des Drehlagers 20 drehen, so dass der Schulterbereich 12 mit der Nackenstütze 11 sich relativ zum Lehnenrahmen 30 nach vorne oder nach hinten neigen kann. Das untere Verbindungselement 25 ist ein Schiebelager, welches im Beckenbereich 14 der Rückenlehen 10 angebracht ist. In diesem Schiebelager 25 kann sich der untere Bereich der Rückenlehne relativ zum Lehnenrahmen 30 frei nach oben und unten bewegen. Weiter ist die Flexibilität der Rückenlehne 10 im Lordosenbereich 13 erhöht, so dass der Lordosenbereich 13 durch Biegung der Rückenlehne 10 vorwölbbar und in Bezug auf den Lehnenrahmen 30 nach vorne oder nach hinten bewegbar ist.The upper connecting element 20 is a pivot bearing, which according to the invention is mounted directly below the shoulder region 12 on the backrest. The upper portion of the backrest 10, from the neck support 11 to above the lumbar region 13 acts as a lever and can rotate about the pivot point of the pivot bearing 20, so that the shoulder portion 12 with the neck support 11 tilt forward or backward relative to the back frame 30 can. The lower connecting element 25 is a sliding bearing, which is mounted in the pool area 14 of the backrest 10. In this sliding bearing 25, the lower region of the backrest can move freely upwards and downwards relative to the backrest frame 30. Furthermore, the flexibility of the backrest 10 in the lumbar region 13 is increased, so that the lumbar region 13 is able to be deflected by bending the backrest 10 and can be moved forwards or backwards in relation to the backrest frame 30.

Fig. 2 zeigt die Rückenlehne 10 mit dem Lehnenrahmen 30 und dem Lehnenträger 3 in drei verschiedenen Zuständen: Im unbelasteten Zustand (Fig. 2a), im Zustand beim Einsitzen einer Person oder bei aufrechter Sitzhaltung (Fig. 2b) und im Zustand beim Zurücklehnen einer Person (Fig. 2c). Die dargestellten Bewegungen S1, S2, S3, S4, D1, D2 sind in Bezug auf den unbelasteten Zustand und relativ zum Lehnenrahmen 30 zu verstehen. Die verschiedenen Neigungen des Lehnenrahmens 30 relativ zum Sitz 1 und der Synchronmechnaik 2 des Bürostuhls sind nicht dargestellt. Die Rückenlehne 10 ist vorgeformt, so dass sie im unbelasteten Zustand (Fig. 2a) im Lordosenbereich 13 vorgewölbt ist. Fig. 2 shows the backrest 10 with the back frame 30 and the backrest support 3 in three different states: In the unloaded state ( Fig. 2a ), when sitting in a person or when sitting upright ( Fig. 2b ) and in the state when reclining a person ( Fig. 2c ). The illustrated movements S1, S2, S3, S4, D1, D2 are to be understood in relation to the unloaded state and relative to the back frame 30. The various inclinations of the back frame 30 relative to the seat 1 and the Synchronmechnaik 2 of the office chair are not shown. The backrest 10 is preformed so that it is in the unloaded state ( Fig. 2a ) is arched in the lumbar region 13.

Beim Einsitzen einer Person (Fig. 2b) entsteht eine Kraft F1, welche auf den Lordosenbereich 13 wirkt. Der Lordosenbereich 13 wird dabei abgeflacht und nach hinten gedrückt (S1). Die Abflachung wird durch die erhöhte Flexibiltät der Rückenlehne 10 im Lordosenbereich 13 ermöglicht. Dabei wird die Rückenlehne 10 in ihrer Gesamtlänge gedehnt. Weil der obere Bereich der Rückenlehne 10 in der vertikalen Position durch das Drehlager 20 fixiert ist, schiebt sich der Beckenbereich 14 der Rückenlehne 10 entlang des Schiebelagers 25 nach unten (S2). Gleichzeitig wirkt der Bereich der Rückenlehne 10 zwischen Lordosenbereich 13 und Drehlager 20 wie ein Hebel für den Schulterbereich 12 und die Nackenstütze 11. Durch die Bewegung des Lordosenbereiches 13 nach hinten (S1) kippt der Schulterbereich 12 und die Nackenstütze 11 wegen der Hebelwirkung am Drehlager 20 leicht nach vorne (D1). Die Rückenlehne 10 passt sich auf diese Weise automatisch dem Rücken der einsitzenden Person an.When a person sits down ( Fig. 2b ) creates a force F1, which acts on the lumbar region 13. The lordosis area 13 is flattened and pushed backwards (S1). The flattening is made possible by the increased flexibility of the backrest 10 in the lumbar region 13. The backrest 10 is stretched in its total length. Because the upper portion of the seat back 10 is fixed in the vertical position by the pivot bearing 20, the pelvic portion 14 of the seat back 10 slides down along the slide bearing 25 (S2). At the same time, the area of the backrest 10 between the lordosis region 13 and the pivot bearing 20 acts like a lever for the shoulder portion 12 and the neck support 11. By the movement of the lumbar region 13 to the rear (S1), the shoulder portion 12 and the neck support 11 tilts slightly forward due to the leverage on the pivot bearing 20 (D1). The backrest 10 thus adapts automatically to the back of the person sitting.

Beim Zurücklehnen der Person (Fig. 2c) wird eine Kraft F2 auf den Schulterbereich 12 ausgeübt und der Schulterbereich 12 und die Nackenstütze 11 kippen leicht nach hinten (D2). Die Hebelwirkung am Drehlager 20 bewirkt ein Vorwölben des flexiblen Lordosenbereiches 13 und bewegt diesen nach vorne (S3). Gleichzeitig verkürzt sich die Rückenlehne 10 und der Beckenbereich 14 der Rückenlehne 10 schiebt sich entlang des Schiebelagers 25 nach oben (S4). Auch beim Zurücklehnen einer Person passt sich die Rückenlehne an die veränderten Bedingungen und die Rückenform an. Die Lordose, die sich beim Zurücklehnen mehr oder weniger krümmt, wird immer optimal von der vorgewölbten Rückenlehne gestützt. Die Bewegung der Nackenstütze 11 verhält sich beim Einsitzten und Zurücklehnen gleich wie der Schulterbereich 12 und garantiert so, dass auch Nacken und Kopf der Person optimal gestützt sind.When reclining the person ( Fig. 2c ), a force F2 is applied to the shoulder region 12, and the shoulder region 12 and the neck support 11 tilt slightly backward (D2). The leverage on the pivot bearing 20 causes a bulging of the flexible lordosis region 13 and moves it forward (S3). At the same time, the backrest 10 is shortened and the pelvic area 14 of the backrest 10 slides upwards along the sliding bearing 25 (S4). Even when reclining a person, the backrest adapts to the changed conditions and the shape of the back. The lordosis, which bends more or less when leaning back, is always optimally supported by the bulging backrest. The movement of the neck support 11 behaves the same way as the shoulder area 12 when seated and leaning back, thus guaranteeing that the person's neck and head are also optimally supported.

Das erfindungsgemässe Zusammenspiel von Drehlager 20, Schiebelager 25 und erhöhter Flexibilität des Lordosenbereiches 13 erlaubt in jeder Sitzposition eine optimale, sich automatisch einstellende Anpassung der Rückenlehne 10 an den Rücken der Person.The inventive interaction of pivot bearing 20, sliding bearing 25 and increased flexibility of the lumbar region 13 allows in each seating position an optimal, automatically adjusting adjustment of the backrest 10 to the back of the person.

Fig. 3 zeigt eine bevorzugte Ausführungsform des Polsterträgers 40 der Rückenlehne 10 mit dem Lehnenrahmen 30 und dem Lehnenträger 3 in einer perspektivischen Ansicht. Die Polsterung 47 ist in Fig. 3 nicht dargestellt. Der Polsterträger 40 weist zwei parallele Seitenholme 41 auf, welche durch mehrere leistenförmige Rippen 42 miteinander verbunden sind. Im Lordosenbereich 13 sind die Seitenholme 41 verjüngt 43, so dass sie gegenüber den anderen Bereichen der Seitenholme 41 eine erhöhte Flexibiltät aufweisen. Im Lordosenbereich 13 ist eine, ggf. verschiebbare, Lordosenstütze 45 angebracht. Jeweils ein Drehlager 20 und ein Schiebelager 25 sind rückseitig an beiden Seitenholmen 41 angebracht. Die Drehlager 20 befinden sich knapp unterhalb des Schulterbereiches 12 der Rückenlehne 10. Die Schiebelager 25 befinden sich im Beckenbereich 14 der Rückenlehne 10. Die beiden Drehlager 20 und die beiden Schiebelager 25 sind über den Lehnenrahmen 30 miteinander verbunden. Der Lehnenrahmen 30 ist über den Lehnenträger 3 an der Synchronmechanik 2 schwenkbar gelagert, wie Fig. 1 und Fig. 4 zeigt. Fig. 3 shows a preferred embodiment of the cushion support 40 of the backrest 10 with the back frame 30 and the backrest support 3 in a perspective view. The padding 47 is in Fig. 3 not shown. The cushion support 40 has two parallel side rails 41, which are interconnected by a plurality of strip-shaped ribs 42. In the lumbar region 13, the side rails 41 are tapered 43 so that they have an increased flexibility compared to the other areas of the side rails 41. In the lumbar region 13 is a, possibly displaceable, lumbar support 45 is attached. In each case a pivot bearing 20 and a sliding bearing 25 are attached to the back of both side rails 41. The pivot bearing 20 are located just below the shoulder portion 12 of the backrest 10. The sliding bearing 25 are located in the pool area 14 of the backrest 10. The two pivot bearings 20 and the two sliding bearings 25 are connected to each other via the back frame 30. The back frame 30 is pivotally mounted on the backrest support 3 on the synchronous mechanism 2, such as Fig. 1 and Fig. 4 shows.

Fig. 4 zeigt eine Rückansicht eines Bürostuhls mit einer erfindungsgemässen neigbaren Rückenlehne 10 mit Lehnenrahmen 30, welche schwenkbar über den Lehnenträger 3 an der Synchronmechanik 2 befestigt ist. Der Lehnenrahmen 30 weist zwei diagonale, sich kreuzende Streben 31 auf, wobei die Streben 31 in deren Kreuzungspunkt 32 miteinander verbunden sind. Eine Querverbindung 33 verbindet die unteren Enden der beiden Streben 31. Fig. 4 shows a rear view of an office chair with an inventive tiltable backrest 10 with backrest frame 30 which is pivotally mounted on the backrest support 3 to the synchronizing mechanism 2. The back frame 30 has two diagonal, intersecting struts 31, wherein the struts 31 are connected to each other at the intersection point 32. A transverse connection 33 connects the lower ends of the two struts 31.

Fig. 5 zeigt den Polsterträger 40 mit dem Lehnenrahmen 30 und dem Lehnenträger 3 in einer Schnittdarstellung durch einen Seitenholm 41. Der Lehnenträger 3 und die Streben 31 des Lehnenrahmens 30 sind in der gleichen Schnittebene dargestellt. Ebenfalls ist die Polsterung 47 dargestellt. Das Schiebelager 25 umfasst einen Lagerbock 26, der in seinem vorderen Ende ein T bildet. Der Lagerbock 26 wird zwischen Lehnenträger 3 und Lehnenrahmen 30 durch Formschluss gehalten. Der Querriegel des T-förmigen Endes des Lagerbocks 26 wird in einer Aussparung 27 im Seitenholm 41 des Polsterträgers 40, welcher durch einen Lagerdeckel abgedeckt wird, geführt. Der Lagerdeckel weist für die Verschiebung eine vertikalen Ausschnitt, und am oberen Ende für die Montage ein horizontal ausgerichtetes Fenster für die Montage des Querriegels des Lagerbocks 26. Durch diese Art der Lagerung lässt sich das untere Ende des Polsterträgers 40 frei in vertikaler Richtung bewegen, wodurch die bei der Verformung des Polsterträgers 40 enstehende Längenänderung kompensiert werden kann. Fig. 5 shows the cushion support 40 with the back frame 30 and the backrest support 3 in a sectional view through a side rail 41. The backrest support 3 and the struts 31 of the back frame 30 are shown in the same sectional plane. Also, the padding 47 is shown. The sliding bearing 25 comprises a bearing block 26 which forms a T in its front end. The bearing block 26 is held between the backrest carrier 3 and the back frame 30 by positive locking. The cross bar of the T-shaped end of the bearing block 26 is guided in a recess 27 in the side rail 41 of the cushion support 40, which is covered by a bearing cap. The bearing cap has a vertical cutout for the displacement, and at the top for mounting a horizontally oriented window for mounting the crossbar of the bearing block 26. By this type of storage, the lower end of the cushion support 40 can move freely in the vertical direction, thereby the 40 resulting in the deformation of the cushion support 40 change in length can be compensated.

In den beschriebenen Ausführungsformen kann die Nackenstütze auch weggelassen werden. Sie ist nicht notwendig für die beschriebene Funktion der Rückenlehne, da der Druck beim Zurücklehnen (F2 in Fig. 2c) auf den Schulterbereich 12 der Rückenlehne 10 ausgeübt wird. Falls eine Nackenstütze 11 vorhanden ist, kann auch Druck F2 mittels dem Nacken und/oder dem Kopf ausgeübt werden, was die bereits beschriebene Hebelwirkung um das Drehlager 20 erhöht.In the described embodiments, the neck support may also be omitted. It is not necessary for the described function of the backrest, as the pressure during recline (F2 in Fig. 2c ) is exerted on the shoulder region 12 of the backrest 10. If a neck support 11 is present, pressure F2 can also be exerted by means of the neck and / or the head, which increases the already described leverage about the pivot bearing 20.

BEZEICHNUNGSLISTENAME LIST

11
SitzSeat
22
Synchronmechaniksynchronous mechanism
33
Lehnenträgerbackrest support
1010
Rückenlehnebackrest
1111
Nackenstützeheadrest
1212
Schulterbereichshoulders
1313
Lordosenbereichlordosis
1414
Beckenbereichpelvis
2020
Drehlagerpivot bearing
2525
Schiebelagersliding bearings
2626
Lagerbockbearing block
2727
Aussparungrecess
3030
starrer Lehnenrahmenrigid backrest frame
3131
Strebenpursuit
3232
Kreuzungspunktintersection
3333
Querverbindungcross connection
4040
Polsterträgercushion support
4141
Seitenholmeside rails
4242
leistenförmige Rippenstrip-shaped ribs
4343
Verjüngungrejuvenation
4545
Lordosenstützelumbar support
4747
Polsterungupholstery

Claims (11)

Neigbare Rückenlehne, insbesondere für einen Bürostuhl, mit einem Schulterbereich (12), einem Lordosenbereich (13) und einem Beckenbereich (14), wobei die Rückenlehne (10) in mindestens einem Bereich flexibel ist und an jeweils mindestens einem oberen und unteren Verbindungselement (20, 25) mit einem starren Lehnenrahmen (30) verbunden ist, wobei das obere Verbindungselement als Drehlager (20) und das untere Verbindungselement als Schiebelager (25) ausgebildet ist, und wobei die Flexibilität der Rückenlehne (10) im Lordosenbereich (13) erhöht ist, so dass der Lordosenbereich (13) durch Krümmung vorwölbbar ist, dadurch gekennzeichnet, dass das Drehlager (20) an der Rückseite der Rückenlehne (10) knapp unterhalb des Schulterbereiches (12) befestigt ist, wobei der obere Teil der Rückenlehne (10) in Bezug auf den Lehnenrahmen (30) nach vorne oder nach hinten neigbar ist, dass das Schiebelager (25) an der Rückseite der Rückenlehne (10) im Beckenbereich (14) befestigt ist, wobei sich der Beckenbereich (14) der Rückenlehne (10) in Bezug auf den Lehnenrahmen (30) vertikal nach oben oder nach unten frei verschieben kann.Tiltable backrest, in particular for an office chair, having a shoulder region (12), a lordosis region (13) and a pelvic region (14), wherein the backrest (10) is flexible in at least one region and is attached to at least one upper and one lower connection element (20 , 25) is connected to a rigid back frame (30), wherein the upper connecting element as a pivot bearing (20) and the lower connecting element as a sliding bearing (25) is formed, and wherein the flexibility of the backrest (10) in the lumbar region (13) is increased in that the lumbar region (13) can be bulged by curvature, characterized in that the pivot bearing (20) is fastened to the back of the backrest (10) just below the shoulder region (12), the upper part of the backrest (10) in With respect to the back frame (30) tilted forward or backward is that the sliding bearing (25) is attached to the back of the backrest (10) in the pelvic region (14), wobe i the pelvic area (14) of the backrest (10) can move freely vertically upwards or downwards with respect to the backrest frame (30). Neigbare Rückenlehne nach Anspruch 1, dadurch gekennzeichnet, dass die Rückenlehne (10) vorgeformt ist, so dass sie im unbelasteten Zustand im Lordosenbereich (13) mit einem Winkel zwischen 25 und 30 Grad gebogen ist und dabei im Lordosenbereich (13) vorgewölbt ist.Tiltable backrest according to claim 1, characterized in that the backrest (10) is preformed, so that it is bent in the unloaded state in the lumbar region (13) at an angle between 25 and 30 degrees and in the lordosis region (13) is arched. Neigbare Rückenlehne nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass sich die Rückenlehne (10) beim Einsitzen einer Person durch Druck auf den Lordosenbereich (13) dem Rücken der Person anpasst und dass dabei in Bezug auf den unbelasteten Zustand und relativ zum Lehnenrahmen (30) der Lordosenbereich (13) um 10 bis 20 Grad abgeflacht und nach hinten verlagert ist, der oberer Bereich der Rückenlehne (10) oberhalb des Drehlagers (20) nach vorne verlagert ist, und der Beckenbereich (14) der Rückenlehne (10) entlang dem Schiebelager (25) nach unten verschoben ist.Tiltable backrest according to one of claims 1 or 2, characterized in that the backrest (10) during insertion of a person by pressure on the lumbar region (13) adapts to the back of the person and that in relation to the unloaded state and relative to the back frame (30) the lumbar region (13) is flattened by 10 to 20 degrees and displaced to the rear, the upper region of the backrest (10) above the rotary bearing (20) is displaced forward, and the pelvic region (14) of the backrest (10) along the sliding bearing (25) is moved down. Neigbare Rückenlehne nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass sich die Rückenlehne (10) beim Zurücklehnen einer auf dem Stuhl sitzenden Person durch Druck auf den Schulterbereich (12) der Rückenlehne (10) verformt und dabei in Bezug auf den unbelasteten Zustand und relativ zum Lehnenrahmen (30) im Lordosenbereich (13) um zusätzliche 10 bis 20 Grad gebogen ist und dabei die Lordosenbereich (13) weiter vorsteht, der oberer Bereich der Rückenlehne (10) oberhalb des Drehlagers (20) nach hinten verlagert ist, und der Beckenbereich (14) der Rückenlehne (10) entlang dem Schiebelager (25) nach oben verschoben ist.Tiltable backrest according to one of claims 1 or 2, characterized in that the backrest (10) deformed when reclining a person sitting on the chair by pressure on the shoulder region (12) of the backrest (10) and thereby in relation to the unloaded state and relative to Lehnenrahmen (30) in the lumbar region (13) is bent by an additional 10 to 20 degrees, while the lumbar region (13) further protrudes, the upper portion of the backrest (10) above the pivot bearing (20) is displaced to the rear, and the pelvic area ( 14) of the backrest (10) along the slide bearing (25) is displaced upwards. Neigbare Rückenlehne nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Rückenlehne (10) eine Polsterträger (40) und eine Polsterung (47) umfasst, wobei der Polsterträger (40) zwei mit mehreren leistenförmigen Rippen (42) verbundene Seitenholme (41) aufweist, wobei die Seitenholme (41) im Lordosenbereich (13) flexibler sind als im oberen und unteren Bereich.Tiltable backrest according to one of claims 1 to 4, characterized in that the backrest (10) comprises a padding support (40) and a padding (47), wherein the padding support (40) has two side bars (41) connected to a plurality of strip-shaped ribs (42) ), wherein the side rails (41) in the lumbar region (13) are more flexible than in the upper and lower regions. Neigbare Rückenlehne nach Anspruch 5, dadurch gekennzeichnet, dass die erhöhte Flexibilität des Seitenholmes (41) im Lordosenbereich (13) durch eine Verjüngung (43) des Seitenholmes (41) erreicht ist.Tiltable backrest according to claim 5, characterized in that the increased flexibility of the side spar (41) in the lumbar region (13) by a taper (43) of the side spar (41) is reached. Neigbare Rückenlehne nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, dass der Lehnenrahmen (30) über zwei rückseitig an den Seitenholmen (41) angebrachte Drehlager (20) mit dem Polsterträger (40) verbunden ist.Tiltable backrest according to one of Claims 5 or 6, characterized in that the backrest frame (30) is connected to the cushion support (40) via two pivot bearings (20) mounted on the rear side of the side rails (41). Neigbare Rückenlehne nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass der Lehnenrahmen (30) über zwei rückseitig an den Seitenholmen (41) angebrachte Schiebelager (25) mit dem Polsterträger (40) verbunden ist.Tiltable backrest according to one of Claims 5 to 7, characterized in that the backrest frame (30) is connected to the cushion support (40) via two slide bearings (25) attached to the side rails (41) at the back. Neigbare Rückenlehne nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet dass der Lehnenrahmen (30) zwei diagonale, sich kreuzende Streben (31) aufweist, welche die oberen und unteren Verbindungselemente miteinander verbindet, wobei die Streben (31) in deren Kreuzungspunkt (32) miteinander verbunden sind.Tilting backrest according to one of Claims 5 to 8, characterized in that the backrest frame (30) has two diagonal, intersecting struts (31) connecting the upper and lower connecting elements, the struts (31) being connected at their point of intersection (32). connected to each other. Neigbare Rückenlehne nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Rückenlehne (10) eine Nackenstütze (11) aufweist.Tiltable backrest according to one of claims 1 to 9, characterized in that the backrest (10) has a neck support (11). Neigbare Rückenlehne nach Anspruch 10, dadurch gekennzeichnet, dass die Rückenlehne (10) im Schulterbereich (12) und dem Bereich der Nackenstütze (11) eine, einer Schulter und Nacken angepasste, s-Form aufweist.Tiltable backrest according to claim 10, characterized in that the backrest (10) in the shoulder region (12) and the region of the neck support (11) has a, a shoulder and neck adapted, s-shape.
EP09009824A 2008-08-01 2009-07-29 Adjustable backrest Not-in-force EP2149319B1 (en)

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DE202012007254U1 (en) * 2012-07-26 2013-10-28 Proflm Sp. Z.O.O. Seating furniture, in particular office chair

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WO1986002243A1 (en) * 1984-10-12 1986-04-24 Ekkehard Anderle Seat with dynamic backrest portion
WO1992006621A1 (en) * 1990-10-12 1992-04-30 J.E. Ekornes A/S Arrangement in a recline chair
US20040124679A1 (en) * 2001-06-20 2004-07-01 Teppo David S. Shape-changing support, such as for seating
DE202004011519U1 (en) * 2004-07-22 2004-11-25 Bock 1 Gmbh & Co. Kg Chair, especially office chair, has height adjustable lumbal support attached to flexible band
WO2007073836A1 (en) 2005-12-16 2007-07-05 König + Neurath AG Backrest and chair

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DE502009000213D1 (en) 2011-01-13
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DE102008036130A1 (en) 2010-02-04
EP2149319B1 (en) 2010-12-01
DE102008036130B4 (en) 2014-12-18

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