EP0591933B1 - Chaise avec dossier - Google Patents

Chaise avec dossier Download PDF

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Publication number
EP0591933B1
EP0591933B1 EP93116100A EP93116100A EP0591933B1 EP 0591933 B1 EP0591933 B1 EP 0591933B1 EP 93116100 A EP93116100 A EP 93116100A EP 93116100 A EP93116100 A EP 93116100A EP 0591933 B1 EP0591933 B1 EP 0591933B1
Authority
EP
European Patent Office
Prior art keywords
support
backrest
chair
plate
back plate
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.)
Expired - Lifetime
Application number
EP93116100A
Other languages
German (de)
English (en)
Other versions
EP0591933A1 (fr
Inventor
Manfred Rainer Kleinikel
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.)
Comforto GmbH
Original Assignee
Comforto GmbH
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 Comforto GmbH filed Critical Comforto GmbH
Publication of EP0591933A1 publication Critical patent/EP0591933A1/fr
Application granted granted Critical
Publication of EP0591933B1 publication Critical patent/EP0591933B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 a chair, in particular an office or work chair, with a backrest according to the features specified in the preamble of claim 1.
  • a chair of this type is disclosed in CH-A-558158.
  • the back plate of chairs of the specified type is freely pivoted on the backrest support about a horizontal pendulum axis. When the user is standing upright, it supports his or her back below the pendulum axis in the lower thoracic vertebrae area and also in the upper lumbar area.
  • the back plate is tilted backwards by the pressure now exerted by the user in the upper thoracic vertebrae area and in the shoulder area, while at the same time the part below the pendulum axis is pressed forward and thus supports the hollow bending of the back and the lordosis - Increased support.
  • this only works if the lever arm of the force acting above the pendulum axis is greater than the lever arm of the support area pressed against the back below the pendulum axis, since otherwise the back plate cannot tilt backwards.
  • the back plate can only extend downwards to a limited extent and there is no effective back support in the lower lumbar region and in the pelvic region.
  • the object of the invention is to provide a chair of the type specified so that an additional support in the lower lumbar and pelvic area is created while maintaining the pendulum support of the back plate and the associated ergonomic advantages, which the user stiff in any sitting position Backrests provide the familiar feeling of security.
  • FIG. 1 shows a schematically simplified side view of a first embodiment of the invention.
  • Fig. 2 shows a second embodiment in a similar representation.
  • a seat support 3 - preferably rotatable and height-adjustable - is mounted on a base frame 1, on which a seat plate 5 is arranged rigidly or movably.
  • a backrest support 7 has an arm 7a which engages under the seat support 3 and is mounted in a horizontal-axis swivel joint 9 on the seat support 3.
  • the means for rotating and adjusting the height of the seat support 3, for moving the seat plate 5 and for controlling and / or locking the inclination of the backrest support 7 are omitted in the drawing for the sake of simplicity.
  • At the upper end of the backrest support 7 is in a horizontal-axis pendulum joint a rigid back plate 13 is pivoted freely.
  • a rigid lower pelvic support plate 17 This is connected in one piece to a rigid lower pelvic support plate 17 via a flexible connecting section 15, which represents a horizontal-axis connecting joint.
  • the back plate 13 and pelvic support plate 17 can also be formed as separate parts and connected by a connecting joint.
  • the pelvic support plate 17 is mounted such that it can be displaced in height on the back support 7, for example by means of a guide pin 19 which engages in a guide slot 21 on the back support 7.
  • Back plate 13 and pelvic support plate 17 are covered with a common cushion, and this contour defines a normal back support point 23 below the pendulum axis 11, for example in the lower thoracic vertebra area of an upright user.
  • the support in the lower lumbar and in the pelvic region is brought about by the pelvic support plate 17, for example at a support point 25, the support force being partly introduced via the connecting link 15 into the back plate 11, but mainly via the guide 19, 21 directly into the backrest support 7.
  • the back support point 23 is moved forward and thus supports the hollow bending of the user's back.
  • This movement is also followed by the upper area of the pelvic support plate 17, so that the support of the lower lumbar and pelvic area is not lost at about point 25.
  • the pelvic support plate 17 its lower end slides upward in the guide 21 on the backrest support 7, so that the back plate 13 and pelvic support plate 17 assume, for example, the position shown in dashed lines in FIG. 1.
  • FIG. 2 differs from that of FIG. 1 only in that the lower end of the back plate 17 in the guide 19, 21 is not freely displaceable, but that this displacement is positively controlled depending on the inclination of the back support 7 .
  • this forced control is effected by a traction cable guide, a traction cable 29 being fastened to the guide pin 19 of the pelvic support plate 17.
  • One end of the pull cable 29 is fastened below the swivel joint 9 in a first anchoring point 31, while the other end of the pull cable 29 is guided around a deflection roller 33 on the backrest support 7 and is then fastened in the region of the swivel joint 9 in a second anchoring point 35.
  • the arrangement of the anchoring points 31, 35 shown above and below the swivel joint 9 ensures that when the backrest support 7 is inclined backwards, the guide pin 19 in the guide slot 21 is pulled upward, as a result of which the pelvic support plate 17 is forcibly moved forward in its upper part, so that there is a bulging of the backrest in the lumbar region.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Claims (6)

  1. Chaise, en particulier chaise de bureau ou de travail, avec dossier constitué d'un support de dossier (7) et d'une plaque dorsale (13) essentiellement rigide montée sur un axe horizontal d'oscillation (11) de manière à pouvoir pivoter librement, et soutenant, dans sa partie située sous l'axe d'oscillation (11), le dos d'un utilisateur, assis le tronc droit, en un point normal (23) de soutien du dos au niveau de la partie inférieure du tronc, cette plaque dorsale se prolongeant vers le haut, au-delà de l'axe d'oscillation (11) jusqu'au niveau des épaules de l'utilisateur, caractérisée en ce qu'il est prévu, en dessous de la plaque dorsale (13), une plaque de support pour le bassin (17) essentiellement rigide, dont l'extrémité supérieure est reliée de manière articulée à l'extrémité inférieure de la plaque dorsale (13) via une jonction formant articulation (15) et dont l'extrémité inférieure est montée à coulissement dans un moyen de guidage (19, 21) sur le support de dossier (7).
  2. Chaise selon la revendication 1, caractérisée en ce que l'extrémité inférieure de la plaque de support pour le bassin (17) coulisse librement dans le moyen de guidage (19, 21).
  3. Chaise selon la revendication 1, caractérisée en ce que le support de dossier (7) est monté à pivotement sur l'armature (1, 3) de la chaise autour d'un axe-pivot horizontal (9) et en ce qu'il est prévu une commande cinématique forcée (29, 31, 33, 35) qui régit le coulissement de l'extrémité inférieure de la plaque de support pour le bassin (17) sur le support de dossier (7) en fonction de l'inclinaison du support de dossier (7).
  4. Chaise selon la revendication 3, caractérisée en ce que le guidage cinématique forcé est constitué d'un câble de traction (29) accroché à l'extrémité inférieure de la plaque de support pour le bassin (17).
  5. Chaise selon l'une quelconque des revendications 1 à 4, caractérisée en ce que l'articulation (15) entre la plaque dorsale (13) et la plaque de support pour le bassin (17) est constituée d'un élément de jonction flexible.
  6. Chaise selon la revendication 5, caractérisée en ce que la plaque dorsale (13) et la plaque de support pour le bassin (17) sont reliées d'une seule pièce par l'élément de jonction flexible (15).
EP93116100A 1992-10-06 1993-10-05 Chaise avec dossier Expired - Lifetime EP0591933B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4233627A DE4233627A1 (de) 1992-10-06 1992-10-06 Stuhl mit Rückenlehne
DE4233627 1992-10-06

Publications (2)

Publication Number Publication Date
EP0591933A1 EP0591933A1 (fr) 1994-04-13
EP0591933B1 true EP0591933B1 (fr) 1995-12-20

Family

ID=6469785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93116100A Expired - Lifetime EP0591933B1 (fr) 1992-10-06 1993-10-05 Chaise avec dossier

Country Status (5)

Country Link
EP (1) EP0591933B1 (fr)
AT (1) ATE131702T1 (fr)
DE (2) DE4233627A1 (fr)
ES (1) ES2052469T1 (fr)
GR (1) GR940300041T1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6637072B2 (en) 2000-09-29 2003-10-28 Formway Furniture Limited Castored base for an office chair
US20150102647A1 (en) * 2013-10-10 2015-04-16 James E. Grove Dynamic lumbar support for a chair

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU783829B2 (en) 2000-09-28 2005-12-08 Formway Furniture Limited A reclinable chair
US6565153B2 (en) * 2001-07-31 2003-05-20 Johnson Controls Technology Corporation Upper back support for a seat
CN100420404C (zh) * 2002-10-11 2008-09-24 国誉株式会社 椅子的靠背结构
DE102008036130B4 (de) * 2008-08-01 2014-12-18 Sedus Stoll Ag Neigbare Rückenlehne
WO2013164078A1 (fr) * 2012-05-04 2013-11-07 Sander, Armin Chaise, en particulier chaise de bureau

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH558158A (de) * 1973-05-18 1975-01-31 Bolleter Emil Stuhl mit rueckenlehne, insbesondere buerostuhl.
DE3700862A1 (de) * 1987-01-14 1988-07-28 Vogt Bueromoebel Sitzmoebel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6637072B2 (en) 2000-09-29 2003-10-28 Formway Furniture Limited Castored base for an office chair
US20150102647A1 (en) * 2013-10-10 2015-04-16 James E. Grove Dynamic lumbar support for a chair
US9357849B2 (en) * 2013-10-10 2016-06-07 James E. Grove Dynamic lumbar support for a chair

Also Published As

Publication number Publication date
ES2052469T1 (es) 1994-07-16
DE4233627A1 (de) 1994-04-07
ATE131702T1 (de) 1996-01-15
DE59301203D1 (de) 1996-02-01
EP0591933A1 (fr) 1994-04-13
GR940300041T1 (en) 1994-07-29

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