EP1836932B1 - Dispositif de soutien lombaire - Google Patents

Dispositif de soutien lombaire Download PDF

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Publication number
EP1836932B1
EP1836932B1 EP07004503A EP07004503A EP1836932B1 EP 1836932 B1 EP1836932 B1 EP 1836932B1 EP 07004503 A EP07004503 A EP 07004503A EP 07004503 A EP07004503 A EP 07004503A EP 1836932 B1 EP1836932 B1 EP 1836932B1
Authority
EP
European Patent Office
Prior art keywords
lumbar support
membrane
backrest frame
lumbar
guide web
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
EP07004503A
Other languages
German (de)
English (en)
Other versions
EP1836932A2 (fr
EP1836932A3 (fr
Inventor
Klaus Maier
Kurt Buntru
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 EP1836932A2 publication Critical patent/EP1836932A2/fr
Publication of EP1836932A3 publication Critical patent/EP1836932A3/fr
Application granted granted Critical
Publication of EP1836932B1 publication Critical patent/EP1836932B1/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

Definitions

  • the invention relates to the field of furniture industry. It relates to a device for lumbar support for an office chair, the backrest consists of a membrane-covered backrest frame.
  • the lordosis is the curvature of the spine forward (hollow back).
  • the said devices for lumbar support should fill this cavity as accurately as possible.
  • a single-sided membrane-covered backrest without upholstery construction does not constitute an over-upholstery of the plastic element. Therefore, a device for lordosis support placed behind or in front of the membrane and stored independently of the membrane in the backrest frame will disadvantageously be uncomfortable to the back, even if it is soft or padded , This is done according to EP 0 856 269 B1 For example, to prevent that a height-adjustable behind the membrane stiffening element is rotatably mounted on the backrest frame. A disadvantage of this solution is the great effort for the production and installation of the two lateral pivotal connections for this stiffening element, which contribute significantly to increasing the chair costs.
  • a device for lumbar support for an office chair with a backrest of a one-sided membrane-covered backrest frame is known, which is arranged behind the membrane and stored independently of the membrane in the backrest frame. It is both height-adjustable and horizontally stretchable and consists of a central part with two relatively rigid support elements, which have a centrally disposed elastic element, preferably a rubber band with each other are connected and each outside a guide web, which are arranged displaceably in the backrest frame.
  • the front part of the device arranged towards the membrane has a cushioning plate with cushioning cushions, the back part of the device is formed by a plastic plate.
  • the pad plate and the plastic plate are connected to each other by means of a clip connection.
  • This device advantageously supports, on the one hand, the lordosis region of the user of such a chair individually very effectively and, on the other hand, also has sufficient elasticity which results in that the cushion does not press.
  • the disadvantage is the comparatively high manufacturing and assembly costs, in particular for sewing the rubber band, and the associated high price.
  • the invention seeks to avoid the mentioned disadvantages of the known prior art. It is the object of the invention to develop a device for lumbar support in a membrane-covered backrest of a chair, which is simple and inexpensive to manufacture, and still their task, namely an effective spine relief to prevent fatigue and tension in the back muscles, very well.
  • the device according to the invention is very simple and inexpensive to produce.
  • the identical support parts can be made in one piece from plastic in automated operations. Expensive handwork, such as sewing the rubber band for the off DE 101 21 207 A1 known solution, deleted.
  • the device for lumbar support is stored independently of the membrane in the backrest frame and both height adjustable and horizontally stretchable over the two spring elements and the polyurethane foam. This guarantees effective relief of the spine.
  • the device for lumbar support is used for an office chair, the backrest frame is covered on both sides with a membrane, wherein the device according to the invention is arranged in an advantageous manner between the two membranes. This gives a chair designed in this way a filigree and aesthetically pleasing impression.
  • the guide bar is arranged to be vertically displaceable in a guide track provided with latching lugs of the seat back frame, and the device for lumbar support is anchored with the aid of a latchable Lordosenschiebers, which is inserted from the outside into the receiving device. This avoids unintentional slipping of the device.
  • Fig. 1 shows a perspective view of an office swivel chair 1 with a built-in device according to the invention for lumbar support 2.
  • the office swivel chair 1 has a backrest frame 3, which on both sides with a in Fig. 1 not shown membrane 4 is covered.
  • the device 2 according to the invention is between the two parts of in Fig.1 not shown membrane 4 and arranged independently of her.
  • Fig. 2 shows a plan view of a portion of the device according to the invention for lumbar support 2 and Fig. 3 a complete plan view of the device 2.
  • the device 2 consists of two identical support elements 5, which are integrally made of plastic.
  • the support elements 5 each have on the outside a lateral guide web 6 and a receiving device 7 for engaging a Lordosenschiebers 8, wherein the guide web 6, a spring element 9 connects, which is connected to a rigid central part 10.
  • the middle part 10 is formed comb-like at its other, the spring element 9 opposite end and therefore has individual webs 11. In the present case, there are two webs 11.
  • the two identical support members 5 are rotated 180 ° to each other and are arranged so that the webs 11 of their two middle parts 10 interlock, which works well in Fig. 2 can be seen.
  • the two carrier elements 5 are connected via a PUR foam 13 applied over both sides of their middle parts 10 (FIG. Fig. 3 ) held.
  • the PU foam element 13 on the one hand brings some necessary elasticity, on the other hand, the lordosis of the user of the chair is well filled by its shape, which improves the supporting effect of the device according to the invention.
  • Fig. 4 is a partial cross section and in Fig. 5 is a partial longitudinal section of the both sides covered with a membrane 4 backrest of the office swivel chair 1 with the built-in device according to the invention for lumbar support 2 shown.
  • the membrane 4 is secured in the backrest frame 3 of the office chair 1 by means of membrane spring.
  • the device for lumbar support 2 is arranged so that it is not immediately visible and makes the office swivel chair 1 a filigree and aesthetically beautiful impression.
  • the device for lumbar support 2 is mounted independently of the membrane 4 in the backrest frame 3 and both height adjustable and over the two spring elements 9 and the polyurethane foam 13 horizontally stretchable. Thus, an effective relief of the spine of the chair user is guaranteed.
  • the spring elements 9 in the Lordosenschiebern 8 prevent vertical slipping of the lumbar support.
  • the guide web 6 of the support element 5 is arranged in a provided with locking lugs 14 guideway 15 of the backrest frame 3 substantially vertically displaceable.
  • the Lordosenschieber 8 is inserted from the outside into the receiving device 7 of the support elements 5, engages and anchors the device for lumbar support 2.
  • the device 2 is stored in the backrest frame 3.
  • the device according to the invention is easy to manufacture and handle. It is also inexpensive. By using different material pairings an adaptation to different loads can be made possible.

Claims (3)

  1. Dispositif de soutien lordosant (2) pour un siège de bureau (1) avec dossier, lequel est composé d'une membrane (4) tendue sur un cadre de dossier (3), dans lequel le dispositif (2) s'étend sur le cadre de dossier (3) indépendamment de la membrane (4) et est aussi extensible de façon ajustable en hauteur ainsi que horizontalement, caractérisé en ce qu'il est composé des pièces suivantes :
    a) deux éléments porteurs (5) identiques, lesquels sont munis chacun d'une plaquette de guidage (6) et d'un dispositif de réception (7) pour l'encliquetage d'une coulisse de lordose (8), où un élément ressort (9) est connecté aux plaquettes de guidage (6), lequel est relié à une pièce intermédiaire (10) rigide et où l'autre extrémité de la pièce intermédiaire (10), se trouvant à l'opposé de l'élément ressort (9), est réalisée en forme de peigne avec des languettes séparées et où
    b) les deux éléments porteurs identiques (5) sont orientés à 180° l'un par rapport à l'autre et sont agencés pour que leurs languettes (11) s'intercalent entre elles, et où
    c) les deux éléments porteurs identiques (5) sont reliés ensemble par un élément en mousse PUR enrobant leurs pièces intermédiaires (10).
  2. Dispositif de soutien lordosant (2) selon la revendication 1, caractérisé en ce que la plaquette de guidage est agencée de façon à coulisser verticalement dans un rail de guidage muni de crans d'encliquetage, et en ce que le dispositif de soutien lord osant est ancré grâce à des coulisses de lordose (8) encliquetables lesquelles sont enfichées depuis l'extérieur dans le dispositif de réception.
  3. Dispositif de soutien lordosant (2) selon la revendication 1, caractérisé en ce qu'il est prévu pour un siège de bureau (1) dont le cadre de dossier (3) sur lequel la membrane (4) est tendue sur les deux faces, où le dispositif (2) est disposé entre les deux membranes (4).
EP07004503A 2006-03-20 2007-03-06 Dispositif de soutien lombaire Not-in-force EP1836932B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006012618A DE102006012618A1 (de) 2006-03-20 2006-03-20 Vorrichtung zur Lordosenabstützung

Publications (3)

Publication Number Publication Date
EP1836932A2 EP1836932A2 (fr) 2007-09-26
EP1836932A3 EP1836932A3 (fr) 2008-05-28
EP1836932B1 true EP1836932B1 (fr) 2009-08-19

Family

ID=38226304

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07004503A Not-in-force EP1836932B1 (fr) 2006-03-20 2007-03-06 Dispositif de soutien lombaire

Country Status (6)

Country Link
US (1) US7344194B2 (fr)
EP (1) EP1836932B1 (fr)
AT (1) ATE439780T1 (fr)
AU (1) AU2007201189A1 (fr)
CA (1) CA2582021A1 (fr)
DE (2) DE102006012618A1 (fr)

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Also Published As

Publication number Publication date
US7344194B2 (en) 2008-03-18
US20070216208A1 (en) 2007-09-20
EP1836932A2 (fr) 2007-09-26
CA2582021A1 (fr) 2007-09-20
EP1836932A3 (fr) 2008-05-28
DE502007001323D1 (de) 2009-10-01
ATE439780T1 (de) 2009-09-15
AU2007201189A1 (en) 2007-10-04
DE102006012618A1 (de) 2007-09-27

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