EP2149319B1 - Dossier inclinable - Google Patents

Dossier inclinable Download PDF

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Publication number
EP2149319B1
EP2149319B1 EP09009824A EP09009824A EP2149319B1 EP 2149319 B1 EP2149319 B1 EP 2149319B1 EP 09009824 A EP09009824 A EP 09009824A EP 09009824 A EP09009824 A EP 09009824A EP 2149319 B1 EP2149319 B1 EP 2149319B1
Authority
EP
European Patent Office
Prior art keywords
backrest
area
frame
lumbar
adjustable
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.)
Not-in-force
Application number
EP09009824A
Other languages
German (de)
English (en)
Other versions
EP2149319A1 (fr
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/fr
Application granted granted Critical
Publication of EP2149319B1 publication Critical patent/EP2149319B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means

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 rotary bearing and the lower connecting element is designed as a sliding bearing, and wherein the flexibility of the backrest is increased in the lumbar region, so that the lumbar region can be 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 be especially in the lumbar area 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 to the upper portion of the back frame, the upper part of the backrest with respect to the Backrest frame can be tilted forwards or backwards
  • the sliding bearing is attached to the back of the backrest in the pelvic area, whereby the pelvic area 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 spinal cord 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 region 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, such that the shoulder region 12 with the neck support 11 can tilt forward or backward relative to the backrest frame 30.
  • 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 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 Schutter Schemees 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 connected at their intersection point 32 with each other are.
  • 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Chairs Characterized By Structure (AREA)

Claims (8)

  1. Dossier inclinable, en particulier pour un siège de bureau, avec une région d'épaule (12), une région de lordose (13) et une région de bassin (14),
    dans lequel le dossier (10) est flexible dans au moins une région et est relié à un cadre de dossier (30) rigide en au moins un élément de liaison (20, 25) supérieur et inférieur,
    dans lequel l'élément de liaison supérieur est réalisé sous la forme d'un palier rotatif (20) et est fixé à la face arrière du dossier (10) juste en dessous de la zone d'épaule (12), dans lequel la partie supérieure du dossier (10) est inclinable vers l'avant ou l'arrière par rapport au cadre de dossier (30),
    dans lequel l'élément de liaison inférieur est réalisé sous la forme d'une liaison glissière (25) et est fixé à la face arrière du dossier (10) dans la zone de bassin (14), dans lequel la zone de bassin (14) du dossier (10) peut glisser verticalement librement vers le haut ou vers le bas par rapport au cadre de dossier (30),
    et dans lequel la flexibilité du dossier (10) est augmentée dans la zone de lordose (13), de façon à ce que la zone de lordose (13) soit pré-cintrée par torsion,
    caractérisé
    en ce que le dossier (10) est préformé de façon à être courbé avec un angle entre 20 et 30 degrés dans la zone de lordose (13) à l'état non chargé et la zone de lordose (13) et est ainsi pré-cintrée,
    en ce que le dossier (10) lors de l'assise d'une personne s'adapte au dos de cette personne par pression sur la zone de lordose (13) et qu'ainsi, par rapport à l'état non chargé, la zone de lordose (13) est déplacée vers l'arrière et aplatie de 10 à 20 degrés, relativement au cadre du dossier, la zone supérieure du dossier (10) au dessus du palier rotatif (20) est déplacée vers l'avant, et la zone de bassin (14) du dossier (10) est coulissée vers le bas le long de la liaison glissière (25),
    et en ce que le dossier (10), lorsqu'une personne assise sur le siège se penche vers l'arrière, se déforme par pression sur la zone d'épaule (12) du dossier (10) et ainsi, par rapport à l'état non chargé et relativement au cadre de dossier (30), est courbé dans la zone de lordose d'environ 10 à 20 degrés supplémentaires et ainsi dépasse au delà de la zone de lordose (13), que la zone supérieure du dossier (10) au dessus du palier rotatif (20) est déplacée vers l'arrière, et que la zone de bassin (14) du dossier (10) est ainsi coulissée vers le haut le long de la liaison glissière (25).
  2. Dossier inclinable selon la revendication 1, caractérisé en ce que le dossier (10) comprend un support de rembourrage (40) et un rembourrage (47), dans lequel le support de rembourrage (40) présente deux longerons latéraux (41) reliés par plusieurs nervures en forme de tasseaux (42), dans lequel les longerons latéraux (41) sont plus flexibles dans la zone de lordose (13) que dans les zones supérieure et inférieure.
  3. Dossier inclinable selon la revendication 2, caractérisé en ce que, dans la zone de lordose (13), la flexibilité augmentée des longerons latéraux (41) est obtenue par une réduction des longerons latéraux (41).
  4. Dossier inclinable selon l'une quelconque des revendications 2 ou 3, caractérisé en ce que le cadre de dossier (30) est relié au support de rembourrage (40) par deux paliers rotatifs (20) montés à l'arrière sur les longerons latéraux (41).
  5. Dossier inclinable selon l'une quelconque des revendications 2 à 4, caractérisé en ce que le cadre de dossier (30) est relié au support de rembourrage (40) par deux liaisons glissières (25) montées à l'arrière sur les longerons latéraux (40).
  6. Dossier inclinable selon l'une quelconque des revendications 2 à 5, caractérisé en ce que le cadre de dossier (30) comprend deux entretoises (31) se croisant en diagonale, lesquelles relient entre eux les éléments de liaison supérieur et inférieur, dans lequel les entretoises (31) sont reliées entre elles à leur point de croisement (32).
  7. Dossier inclinable selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le dossier (10) présente un appui nuque.
  8. Dossier inclinable selon la revendication 7, caractérisé en ce que le dossier (10) présente dans la zone d'épaule (12) et de l'appui nuque (11) une forme en « S » adaptée aux épaules et à la nuque.
EP09009824A 2008-08-01 2009-07-29 Dossier inclinable Not-in-force EP2149319B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008036130.5A DE102008036130B4 (de) 2008-08-01 2008-08-01 Neigbare Rückenlehne

Publications (2)

Publication Number Publication Date
EP2149319A1 EP2149319A1 (fr) 2010-02-03
EP2149319B1 true EP2149319B1 (fr) 2010-12-01

Family

ID=41262260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09009824A Not-in-force EP2149319B1 (fr) 2008-08-01 2009-07-29 Dossier inclinable

Country Status (4)

Country Link
EP (1) EP2149319B1 (fr)
AT (1) ATE489876T1 (fr)
DE (2) DE102008036130B4 (fr)
ES (1) ES2355791T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012007254U1 (de) * 2012-07-26 2013-10-28 Proflm Sp. Z.O.O. Sitzmöbel, insbesondere Bürostuhl

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8425908D0 (en) * 1984-10-12 1984-11-21 Anderle E Seat with dynamic lumbar support
NO176384C (no) * 1990-10-12 1995-03-29 Ekornes Fabrikker As J E Anordning ved en stol, spesielt en stol med regulerbar rygg og nakkestötte
DE4233627A1 (de) * 1992-10-06 1994-04-07 Comforto Gmbh Stuhl mit Rückenlehne
US20040124679A1 (en) * 2001-06-20 2004-07-01 Teppo David S. Shape-changing support, such as for seating
AU2003243286A1 (en) * 2002-05-20 2003-12-12 Jerome Carmel Caruso Seating structure having an adjustable body support member
US7458637B2 (en) * 2004-06-10 2008-12-02 Steelcase Inc. Back construction with flexible lumbar
DE202004011519U1 (de) * 2004-07-22 2004-11-25 Bock 1 Gmbh & Co. Kg Sitzmöbel, insbesondere Bürostuhl
DE202005019654U1 (de) 2005-12-16 2007-04-26 König + Neurath AG Rückenlehne und Stuhl
DE502007004698D1 (de) * 2006-10-10 2010-09-23 Provenda Marketing Ag Personensitz mit ergonomischen Lehnenteil

Also Published As

Publication number Publication date
DE102008036130A1 (de) 2010-02-04
ATE489876T1 (de) 2010-12-15
EP2149319A1 (fr) 2010-02-03
DE102008036130B4 (de) 2014-12-18
ES2355791T3 (es) 2011-03-31
DE502009000213D1 (de) 2011-01-13

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