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US20090184553A1 - Chair with an Automatically Adjustable Lumbar Support - Google Patents

Chair with an Automatically Adjustable Lumbar Support Download PDF

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Publication number
US20090184553A1
US20090184553A1 US12/308,829 US30882907A US2009184553A1 US 20090184553 A1 US20090184553 A1 US 20090184553A1 US 30882907 A US30882907 A US 30882907A US 2009184553 A1 US2009184553 A1 US 2009184553A1
Authority
US
United States
Prior art keywords
backrest
lumbar support
chair
carrier
coupling element
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.)
Abandoned
Application number
US12/308,829
Other languages
English (en)
Inventor
Elke Dauphin
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.)
Dauphin Entwicklungs und Beteiligungs GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to DAUPHIN ENTWICKLUNGS- UND BETEILIGUNGS GMBH reassignment DAUPHIN ENTWICKLUNGS- UND BETEILIGUNGS GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DAUPHIN, ELKE
Publication of US20090184553A1 publication Critical patent/US20090184553A1/en
Abandoned 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
    • A47C7/462—Supports 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
    • A47C7/465—Supports 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 by pulling an elastic cable

Definitions

  • the invention relates to a chair, in particular an office chair, with a backrest which is articulated on a carrier via a backrest carrier and has an adjustable lumbar support, and with a seat surface which is attached to the carrier.
  • the invention is based on the object of providing a chair which provides a particularly convenient, automatic adjustment option.
  • the chair according to the invention provides coupling of the inclination of the backrest and of the adjustment position of the lumbar support via a coupling element in such a manner that a rearwardly directed tilting movement of the backrest causes a change in the adjustment position of the lumbar support, in particular relaxation of the lumbar support, and a forwardly directed tilting movement of the backrest likewise causes a change in the adjustment position of the lumbar support, in particular tensioning of the lumbar support.
  • the invention therefore provides a lumbar support which is tensioned or relaxed as a function of the inclination position of the backrest and thus permits optimized shaping of the backrest.
  • the lumbar support which is integrated in the backrest is automatically adjusted as a function of the backrest inclination brought about by the chair user, and therefore, in particular if the user leans back, the lumbar support is relaxed and the user is therefore ergonomically advantageously supported in the lumbar region.
  • an ergonomically desirable adjustment of the lumbar support the adjustment being advantageous in terms of health, therefore takes place automatically without any help from the user.
  • the coupling element is designed as a cable pull (Bowden cable).
  • the coupling element Upon a change in the inclination position of the backrest in relation to the seat surface, the coupling element is tensioned or relaxed.
  • the cable pull which is attached by its one end to the lumbar support and by its other end to or in the region of the seat surface of the chair, is relaxed when the backrest is inclined to the rear, and therefore, by easing the tensioning on the cable pull, the lumbar support is transferred from the tensioned (i.e. more or less curved) position into a relaxed (i.e. slightly curved or completely flat) position.
  • the coupling element is integrated in the backrest carrier of the backrest such that actuation of the coupling element, which actuation is transmitted from the region of the seat surface, is transferred by the coupling element running in the backrest carrier of the backrest into the lumbar support integrated in the backrest.
  • the backrest carrier of the backrest also has an integrated adjustment element for adjusting the height of the backrest in relation to the backrest carrier.
  • FIG. 1 shows a rear view of the chair construction
  • FIG. 2 shows a side view B of the chair construction from FIG. 1 ,
  • FIG. 3 shows a view C from above from FIG. 1 ,
  • FIG. 4 shows a front view of the chair construction from FIG. 1 .
  • FIG. 5 shows a section A-A from FIG. 4 .
  • FIG. 1 shows the chair construction of a chair 1 (without additional parts which are known per se, such as armrests, rotary column, foot frame, etc.), with a carrier 33 and a backrest 3 which is articulated on a backrest carrier 2 and has a lumbar support 4 integrated in the backrest 3 , and with a seat surface 12 which can be attached to the carrier 33 in the region 5 (cf. FIG. 5 ).
  • the lumbar support 4 comprises individual supporting regions 6 , 7 , 8 and 9 which can be actuated by a coupling element 10 , in particular a cable pull 11 , to the effect that, when the lumbar support 4 is tensioned, the individual supporting regions 6 , 7 , 8 and 9 are curved with respect to one another and, when said lumbar support is relaxed, the individual supporting regions are arranged substantially flat and relaxed with respect to one another.
  • a coupling element 10 in particular a cable pull 11
  • the lumbar support 4 is attached at a lower edge region, for example at the supporting region 9 , to the backrest 3 , with, by application of tension by the coupling element 10 , the uppermost supporting region 6 being pulled up in relation to the lower supporting regions 7 , 8 and 9 such that the distances 14 between the supporting regions 6 , 7 , 8 and 9 are reduced when the lumbar support 4 is tensioned.
  • the cable pull 11 is integrated in the backrest carrier 2 and is held in a recess 15 .
  • the cable pull 11 is guided by the recess 15 (cf. FIG. 5 ) into the region below the seat surface 12 which is indicated schematically in FIG. 5 by a line.
  • the cable pull 11 here has a first end region (not visible) which is connected to the supporting region 6 , and a further end region 13 which is connected indirectly or directly to the seat surface 12 .
  • the further end region 13 is articulated on a holder 14 of the seat surface 12 .
  • the chair according to FIG. 1 has, as an alternative or in addition, a lateral adjustment element 20 which is of self-locking design and wherein a separate (supplementary) adjustment of the lumbar support 4 can be undertaken by a separate cable pull 21 .
  • the adjustment element 21 has a lever 22 which can be displaced in the direction 23 and, depending on the position of adjustment, actuates the cable pull 21 in such a manner that the lumbar support 4 is tensioned to a greater or lesser extent (curved or not curved).
  • the chair 1 has an adjustment element 24 which is integrated in the backrest carrier 2 and permits a height adjustment of the backrest 3 in relation to the backrest carrier 2 .
  • the adjustment element 24 here has in particular a horizontal strip 25 which permits locking of the height position of the backrest 3 on the backrest carrier 2 by means of latching.
  • the particular user by actuating the levers 26 and 27 in the direction 28 , can displace the horizontal strip 25 by displacing the recess 29 in the direction 30 , as a result of which the spring 31 is tensioned.
  • the chair 1 therefore has a backrest carrier 2 in which, in one particular embodiment, an integrated recess 15 for receiving a coupling element 10 , in particular a cable pull 11 , is provided, and furthermore an integrated receiving of an adjustment element 24 for adjusting the height of the backrest 3 in relation to the backrest carrier 2 is made possible.
  • the cable pull 12 is first of all guided upward parallel to the longitudinal extent of the backrest carrier 2 (cf. FIG. 1 ) and then is guided downward again in an arc 32 to the supporting regions 9 - 6 with a length sufficient for different height settings of the backrest 3 on the backrest carrier 2 .
  • a coupling element 10 (in particular cable pull 11 ) is therefore provided, said coupling element being connected to the seat surface 12 and at the same time being realized with a height adjustment of the backrest 3 (by means of the adjustment element 24 ), which height adjustment is integrated in the backrest 13 .
  • An automatic adjustment of the lumbar support 4 with adjustability of the height of the backrest 3 is therefore realized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
US12/308,829 2006-06-26 2007-06-25 Chair with an Automatically Adjustable Lumbar Support Abandoned US20090184553A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE102006029537.4 2006-06-26
DE102006029537A DE102006029537A1 (de) 2006-06-26 2006-06-26 Stuhl mit automatisch verstellbarer Lumbalstütze
EP06022177A EP1872689B1 (de) 2006-06-26 2006-10-23 Stuhl mit automatisch verstellbarer Lumbalstütze
EP06022177.7 2006-10-23
PCT/DE2007/075006 WO2008019684A1 (de) 2006-06-26 2007-06-25 Stuhl mit automatisch verstellbarer lumbalstütze

Publications (1)

Publication Number Publication Date
US20090184553A1 true US20090184553A1 (en) 2009-07-23

Family

ID=38523472

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/308,829 Abandoned US20090184553A1 (en) 2006-06-26 2007-06-25 Chair with an Automatically Adjustable Lumbar Support

Country Status (8)

Country Link
US (1) US20090184553A1 (de)
EP (1) EP1872689B1 (de)
CN (1) CN101478896A (de)
AT (1) ATE453344T1 (de)
DE (2) DE102006029537A1 (de)
DK (1) DK1872689T3 (de)
PL (1) PL1872689T3 (de)
WO (1) WO2008019684A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120146375A1 (en) * 2009-01-29 2012-06-14 Lennart Tranback Office Chair
WO2013119172A1 (en) * 2012-02-06 2013-08-15 Lt Office Line Ab Office chair with an adaptable lumbar support
US9004597B2 (en) 2012-09-20 2015-04-14 Steelcase Inc. Chair back mechanism and control assembly
US9282825B1 (en) 2015-01-07 2016-03-15 Exemplis Llc Lumbar support adjustment mechanisms
US9629469B1 (en) 2016-05-12 2017-04-25 Mary Watkins Lumbar support system
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206822374U (zh) * 2017-01-19 2018-01-02 欧亚平 一种靠背能够紧贴人体腰背部移动的椅子
CN110063617B (zh) * 2019-04-11 2021-07-09 云南农业大学 一种基于人机工程学的座椅辅助装置及其控制系统与控制方法
CN113966930B (zh) * 2021-11-16 2025-05-02 浙江护童人体工学科技股份有限公司 丝杆连杆传动式靠背腰托联动升降机构及座椅

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251107A (en) * 1978-03-20 1981-02-17 Sugatsune Industrial Co., Ltd. Collapsible reclining chair
US4676550A (en) * 1983-06-14 1987-06-30 Marcel Neve De Mevergnies Seat for vehicle, particularly motor vehicle
US5472261A (en) * 1990-10-12 1995-12-05 Ekornes Fabrikker As J E Arrangement in a recline chair
US20020130541A1 (en) * 2001-03-19 2002-09-19 Yong-Seo Koo Chair equipped with lumbar support unit
US20030117002A1 (en) * 2001-12-20 2003-06-26 Mcmillen Robert Unitized back plate and lumbar support
US6626494B2 (en) * 2000-09-19 2003-09-30 Han-Keel Yoo Chair and method for correcting an improper alignment of spinal vertebrae
US7086700B2 (en) * 2003-11-03 2006-08-08 Faurecia Autositze Gmbh & Co. Kg Automobile seat
US7226127B1 (en) * 2005-12-21 2007-06-05 Tk Canada Limited Ergonomic chair backrest
US7540464B2 (en) * 2005-08-26 2009-06-02 Badiollah R. Samari Book holder

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6189972B1 (en) * 1998-06-05 2001-02-20 Teknion Furniture Systems Inc. Lumbar support adjustment mechanism
DE10200895B4 (de) * 2002-01-11 2017-06-01 himolla Polstermöbel GmbH Sitz-/Liegemöbel

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251107A (en) * 1978-03-20 1981-02-17 Sugatsune Industrial Co., Ltd. Collapsible reclining chair
US4676550A (en) * 1983-06-14 1987-06-30 Marcel Neve De Mevergnies Seat for vehicle, particularly motor vehicle
US5472261A (en) * 1990-10-12 1995-12-05 Ekornes Fabrikker As J E Arrangement in a recline chair
US6626494B2 (en) * 2000-09-19 2003-09-30 Han-Keel Yoo Chair and method for correcting an improper alignment of spinal vertebrae
US20020130541A1 (en) * 2001-03-19 2002-09-19 Yong-Seo Koo Chair equipped with lumbar support unit
US20030117002A1 (en) * 2001-12-20 2003-06-26 Mcmillen Robert Unitized back plate and lumbar support
US7086700B2 (en) * 2003-11-03 2006-08-08 Faurecia Autositze Gmbh & Co. Kg Automobile seat
US7540464B2 (en) * 2005-08-26 2009-06-02 Badiollah R. Samari Book holder
US7226127B1 (en) * 2005-12-21 2007-06-05 Tk Canada Limited Ergonomic chair backrest

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120146375A1 (en) * 2009-01-29 2012-06-14 Lennart Tranback Office Chair
US8651574B2 (en) * 2009-01-29 2014-02-18 Lt Office Line Ab Office chair
WO2013119172A1 (en) * 2012-02-06 2013-08-15 Lt Office Line Ab Office chair with an adaptable lumbar support
CN104244773A (zh) * 2012-02-06 2014-12-24 Lt欧菲姿莱茵公司 具有可调适的腰支架的办公椅
US9351580B2 (en) 2012-02-06 2016-05-31 Lt Office Line Ab Office chair with an adaptable lumbar support
USD742677S1 (en) 2012-09-20 2015-11-10 Steelcase Inc. Chair
US9004597B2 (en) 2012-09-20 2015-04-14 Steelcase Inc. Chair back mechanism and control assembly
US9027999B2 (en) 2012-09-20 2015-05-12 Steelcase Inc. Control assembly for chair
US9027998B2 (en) 2012-09-20 2015-05-12 Steelcase Inc. Chair assembly
US9027997B2 (en) 2012-09-20 2015-05-12 Steelcasel Inc. Chair assembly
US9049935B2 (en) 2012-09-20 2015-06-09 Steelcase Inc. Control assembly for chair
USD742676S1 (en) 2012-09-20 2015-11-10 Steelcase Inc. Chair
US9010859B2 (en) 2012-09-20 2015-04-21 Steelcase Inc. Chair assembly
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
US9022476B2 (en) 2012-09-20 2015-05-05 Steelcase Inc. Control assembly for chair
US9451826B2 (en) 2012-09-20 2016-09-27 Steelcase Inc. Chair assembly
US9462888B2 (en) 2012-09-20 2016-10-11 Steelcase Inc. Control assembly for chair
US9492013B2 (en) 2012-09-20 2016-11-15 Steelcase Inc. Chair back mechanism and control assembly
US9526339B2 (en) 2012-09-20 2016-12-27 Steelcase Inc. Control assembly for chair
US10206507B2 (en) 2012-09-20 2019-02-19 Steelcase Inc. Control assembly for chair
US9844267B2 (en) 2012-09-20 2017-12-19 Steelcase Inc. Chair back mechanism and control assembly
US9861201B2 (en) 2012-09-20 2018-01-09 Steelcase, Inc. Chair assembly
US9918552B2 (en) 2012-09-20 2018-03-20 Steelcase Inc. Control assembly for chair
US9282825B1 (en) 2015-01-07 2016-03-15 Exemplis Llc Lumbar support adjustment mechanisms
US9629469B1 (en) 2016-05-12 2017-04-25 Mary Watkins Lumbar support system

Also Published As

Publication number Publication date
CN101478896A (zh) 2009-07-08
EP1872689B1 (de) 2009-12-30
DE102006029537A1 (de) 2007-12-27
WO2008019684A1 (de) 2008-02-21
DK1872689T3 (da) 2010-05-03
EP1872689A1 (de) 2008-01-02
ATE453344T1 (de) 2010-01-15
PL1872689T3 (pl) 2010-06-30
DE502006005787D1 (de) 2010-02-11

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Legal Events

Date Code Title Description
AS Assignment

Owner name: DAUPHIN ENTWICKLUNGS- UND BETEILIGUNGS GMBH, GERMA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DAUPHIN, ELKE;REEL/FRAME:022272/0776

Effective date: 20081217

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION