EP0591933A1 - Chaise avec dossier - Google Patents

Chaise avec dossier Download PDF

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Publication number
EP0591933A1
EP0591933A1 EP93116100A EP93116100A EP0591933A1 EP 0591933 A1 EP0591933 A1 EP 0591933A1 EP 93116100 A EP93116100 A EP 93116100A EP 93116100 A EP93116100 A EP 93116100A EP 0591933 A1 EP0591933 A1 EP 0591933A1
Authority
EP
European Patent Office
Prior art keywords
support
backrest
plate
chair
pelvic
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
EP93116100A
Other languages
German (de)
English (en)
Other versions
EP0591933B1 (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—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/46—Supports 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.
  • 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 and also in the upper lumbar region.
  • 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.
  • 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 For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
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 true EP0591933A1 (fr) 1994-04-13
EP0591933B1 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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004037047A1 (fr) * 2002-10-11 2004-05-06 Kokuyo Furniture Co.,Ltd. Structure de dossier de chaise
US6802566B2 (en) 2000-09-28 2004-10-12 Formway Furniture Limited Arm assembly for a chair
US6840582B2 (en) 2002-05-14 2005-01-11 Formway Furniture Limited Height adjustable arm assembly
DE102008036130A1 (de) * 2008-08-01 2010-02-04 Sedus Stoll Ag Neigbare Rückenlehne
WO2013164078A1 (fr) * 2012-05-04 2013-11-07 Sander, Armin Chaise, en particulier chaise de bureau

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPR054400A0 (en) 2000-09-29 2000-10-26 Formway Furniture Limited A castor
US6565153B2 (en) * 2001-07-31 2003-05-20 Johnson Controls Technology Corporation Upper back support for a seat
US9357849B2 (en) * 2013-10-10 2016-06-07 James E. Grove Dynamic lumbar support for a chair
JP7766253B2 (ja) * 2022-06-02 2025-11-10 田中　永一郎 椅子の背もたれ

Citations (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

Patent Citations (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 (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7798573B2 (en) 2000-09-28 2010-09-21 Formway Furniture Limited Reclinable chair
US6802566B2 (en) 2000-09-28 2004-10-12 Formway Furniture Limited Arm assembly for a chair
US6817667B2 (en) 2000-09-28 2004-11-16 Formway Furniture Limited Reclinable chair
US6874852B2 (en) 2000-09-28 2005-04-05 Formway Furniture Limited Lumbar support
US6908159B2 (en) 2000-09-28 2005-06-21 Formway Furniture Limited Seat for a reclining office chair
US6910741B2 (en) 2000-09-28 2005-06-28 Formway Furniture Limited Lumbar support
US7441839B2 (en) 2000-09-28 2008-10-28 Formway Furniture Limited Reclinable chair
US6840582B2 (en) 2002-05-14 2005-01-11 Formway Furniture Limited Height adjustable arm assembly
WO2004037047A1 (fr) * 2002-10-11 2004-05-06 Kokuyo Furniture Co.,Ltd. Structure de dossier de chaise
DE102008036130A1 (de) * 2008-08-01 2010-02-04 Sedus Stoll Ag Neigbare Rückenlehne
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
US9609952B2 (en) 2012-05-04 2017-04-04 Itoki Corporation Chair, especially, office chair

Also Published As

Publication number Publication date
DE4233627A1 (de) 1994-04-07
ATE131702T1 (de) 1996-01-15
EP0591933B1 (fr) 1995-12-20
DE59301203D1 (de) 1996-02-01
GR940300041T1 (en) 1994-07-29
ES2052469T1 (es) 1994-07-16

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