EP0970639A1 - Support lombaire réglable - Google Patents

Support lombaire réglable Download PDF

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Publication number
EP0970639A1
EP0970639A1 EP98810642A EP98810642A EP0970639A1 EP 0970639 A1 EP0970639 A1 EP 0970639A1 EP 98810642 A EP98810642 A EP 98810642A EP 98810642 A EP98810642 A EP 98810642A EP 0970639 A1 EP0970639 A1 EP 0970639A1
Authority
EP
European Patent Office
Prior art keywords
support
axis
frame
seat
support surface
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.)
Withdrawn
Application number
EP98810642A
Other languages
German (de)
English (en)
Inventor
Uli Witzig
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.)
Provenda Marketing AG
Original Assignee
Provenda Marketing 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 Provenda Marketing AG filed Critical Provenda Marketing AG
Priority to EP98810642A priority Critical patent/EP0970639A1/fr
Publication of EP0970639A1 publication Critical patent/EP0970639A1/fr
Withdrawn legal-status Critical Current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
    • 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 present invention relates to a work chair with a physiologically shaped seat and one adjustable lumbar support.
  • An adjustable support of the The back of a person sitting on the chair should also join simple means.
  • the Support of the lumbar spine with regard to the support height above the Seat and support depth of the lumbar arch on the Body mass and the curvature of a lumbar spine seated person can be adjusted.
  • the Lumbar support from one around its horizontal longitudinal axis rotatable support pad with a plurality of different shaped support surfaces on its circumference, the Distance between the support surface and the axis of rotation in the Center of a support surface from the distance between the Support surface and the axis of rotation in the middle of another Support surface differs.
  • the lumbar spine is in the Especially through the middle part of the roll-like Support pad supported. Thanks to different distances between surface and axis of rotation in such a
  • the support roller can have a different support depth by rotating the roller the lumbar support surface in relation to the physiologically shaped Seat recess can be reached.
  • Three support surfaces on the circumference of the are advantageous Support pad provided, the support surfaces in horizontal longitudinal direction are differently curved, i.e. for example one concave support surface, another Support surface convex and a third support surface approximately flat is trained.
  • Three support surfaces together form one Triangular shape, whose edge areas or transitions unite have a much greater distance from the axis of rotation than that Center of the support surfaces. This is an unintentional one Preventing the support roller from twisting because of the transition areas for a rotation of the roll counter the load would have to be twisted.
  • the convex support surface supports a deeper lumbar curvature than the concave support surface. With three different ones Support surfaces can be graded appropriately to the different body sizes and shapes of the users To be received.
  • the position of the lumbar support is advantageous adjustable in height over the seat. This can also the support height can be adjusted.
  • the frame is advantageously elastically deformable, so that he asymmetrical load in his upper area yields under torsion, which makes the back well supported, but at the same time against inactivity and monotonous, static load is protected.
  • the seat is advantageous due to a seat part and a separate one that can be slid under the seat part or Pull-out thigh support under the seat part educated. This allows the seat depth to the body size and Sitting habits of the user can be matched.
  • the support skeleton 27 has a stem 31 with which it sitting on the thorn, and three branches 32,33,34. Two branches 32.34 are aligned approximately horizontally, the third 33 strives upwards in a slightly curved line directly against the upper edge of the backrest 13.
  • a substantially Rectangular frame 35 is at the top center with the branch 33 and on Loin height laterally connected to branches 32, 34.
  • the Junctions 37, 38, 39 are elastic. On elastic intermediate part 37 ', 38', 39 'enables one limited mobility of the frame 35 on the support skeleton 27.
  • Das The supporting skeleton 27 is in particular in the ascending branch 33 designed to be elastic and specifically enables one Mobility of the upper edge of the backrest 13 after back and forward again.
  • the support pad 15 is triangular and with parallel Edges formed. Depending on the rotational position of the support pad 15 is the support form of the backrest more or less after arched at the front.
  • the support pad 15 is in detail shown.
  • the edges 51 between the support surfaces 53, 54, 55 and the edges 52 between the support surfaces 53, 54, 55 and the Side surface 56 are rounded.
  • the basic form of the The support pad has slightly curved edges 52 on.
  • the radii of these edges 52 in a vertical plane to the axis 59 are laterally along the support surfaces 53,54,55 are approximately 100 mm, in the edges 51 approximately 25 mm.
  • the radius of the edges 52 is approximately 12 mm.
  • Support surfaces 53 and 54 also support surface 55 in one Section along the central plane perpendicular to axis 59 shown.
  • This support surface 55 follows the geometry of the edges 52. There are therefore longitudinal sections through the axis 59 and through the middle of the support surfaces 53,54,55 Sectional images of the support surfaces 53, 54, 55 according to FIGS. 6, 5 and 4.
  • the support surface 55 is along a horizontal Longitudinal section or a section through the horizontal axis 59 straightforward.
  • the surface of the support surface 54 describes a convex line in a corresponding section with a radius of about 725 mm, the support surface 53 a concave line with a radius of approx. 625 mm.
  • the holding jaws 49 and 50 are with the webs 65 Arms 32 and 34 connected (Fig. 8).
  • the arms are 32.34 slightly arched backwards so that its outer ends are facing are bent towards the front of the frame. This makes a room created between the supporting skeleton 27 and the fabric 47, in which fits the lumbar support 15.
  • Figure 9 shows the frame 35 of the backrest 13 of behind.
  • 10 shows a section through the frame 35 along the center line.
  • the frame shape is interesting upward and (seen in Figure 10) backward Arch of the lower frame side 67, which part of the frame through its arch shape relatively much pull on the elastic Upholstery fabric 47 can exercise.
  • the frame 35 can be seen in Figure 10, with its lateral Fastening points 37 thickened. Therefore, the backrest is 13 less elastic in the loins than in the upper Area. This gives a better grip on the more important place and more freedom of movement moving parts of the back.
  • the shape of the frame profile is rounded on the front so that the upholstery fabric in proximity to the inner and front edge 69 of the frame profile runs away from the frame profile, or the track profile from the The clothing gapes backwards. When leaning against the This is pushed backwards. The The line of contact between the cover and the frame comes to the edge 69 therefore closer.
  • FIG 11 shows the chair according to Figure 1 from the side.
  • the seat part 21 is fastened to the support parts 23.
  • the Seat part 21 consists of two separate parts, namely the Seat part 71, which only offers space for the buttocks, and the thigh support 73, which for changing the length of the Seat can be pushed under the seat part 71.
  • the thigh support 73 is formed.
  • the cushion of the The seat part tapered to the front, so that the no longer through the front part of the seat cushion Seat part support shell 79 is worn, but under load rests on the thigh support 73.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP98810642A 1998-07-07 1998-07-07 Support lombaire réglable Withdrawn EP0970639A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98810642A EP0970639A1 (fr) 1998-07-07 1998-07-07 Support lombaire réglable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810642A EP0970639A1 (fr) 1998-07-07 1998-07-07 Support lombaire réglable

Publications (1)

Publication Number Publication Date
EP0970639A1 true EP0970639A1 (fr) 2000-01-12

Family

ID=8236182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810642A Withdrawn EP0970639A1 (fr) 1998-07-07 1998-07-07 Support lombaire réglable

Country Status (1)

Country Link
EP (1) EP0970639A1 (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1123023A1 (fr) * 1998-09-10 2001-08-16 Jonber Inc. Siege
WO2005051133A1 (fr) * 2003-11-28 2005-06-09 Schukra Gerätebau AG Soutien lombaire
DE102004050858A1 (de) * 2004-10-18 2006-04-20 Dauphin Entwicklungs- U. Beteiligungs-Gmbh Stuhl mit verstellbarem Rückenlehnenträger
EP1698256A1 (fr) * 2005-03-04 2006-09-06 Bock 1 GmbH & Co. KG Siège, notamment chaise de bureau
WO2007038879A1 (fr) * 2005-10-03 2007-04-12 Vitra Patente Ag Siege
WO2007112236A1 (fr) * 2006-03-24 2007-10-04 Hni Corporation fauteuil inclinable avec une capacité de réglage améliorée
EP2622991A1 (fr) * 2012-01-31 2013-08-07 Sedus Stoll AG Soutien de lordose, inclinaison de dossier, chaise et procédé de réglage d'un soutien de lordose
USD731833S1 (en) 2014-04-17 2015-06-16 Allsteel Inc. Chair
US9332851B2 (en) 2013-03-15 2016-05-10 Hni Technologies Inc. Chair with activated back flex
US9504331B2 (en) 2007-03-13 2016-11-29 Hni Technologies Inc. Dynamic chair back lumbar support system
USD796883S1 (en) 2014-10-15 2017-09-12 Hni Technologies Inc. Chair
US9801470B2 (en) 2014-10-15 2017-10-31 Hni Technologies Inc. Molded chair with integrated support and method of making same
JP2017200599A (ja) * 2013-06-06 2017-11-09 株式会社イトーキ 椅子
US10064493B2 (en) 2014-04-17 2018-09-04 Hni Technologies Inc. Flex lumbar support
US10927545B2 (en) 2010-05-05 2021-02-23 Allsteel Inc. Modular wall system
US11253076B2 (en) * 2019-02-05 2022-02-22 Unchair LLC Chair having open shoulder backrest
US11337526B2 (en) * 2018-04-19 2022-05-24 Cramer Llc Chair having pliable backrest and methods for same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1199756A (en) * 1967-08-10 1970-07-22 Nat Res Dev Seats
DE3222951A1 (de) * 1982-06-18 1983-12-22 Keiper Recaro GmbH & Co, 7312 Kirchheim Rueckenlehne fuer einen fahrzeugsitz, insbesondere einen kraftfahrzeugsitz
US4915447A (en) * 1989-03-13 1990-04-10 Sears Manufacturing Company Vehicle seat with adjustable thigh support
US5494332A (en) * 1993-05-19 1996-02-27 Daniel; Machfud Chair with orthopedic back support

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1199756A (en) * 1967-08-10 1970-07-22 Nat Res Dev Seats
DE3222951A1 (de) * 1982-06-18 1983-12-22 Keiper Recaro GmbH & Co, 7312 Kirchheim Rueckenlehne fuer einen fahrzeugsitz, insbesondere einen kraftfahrzeugsitz
US4915447A (en) * 1989-03-13 1990-04-10 Sears Manufacturing Company Vehicle seat with adjustable thigh support
US5494332A (en) * 1993-05-19 1996-02-27 Daniel; Machfud Chair with orthopedic back support

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1123023A1 (fr) * 1998-09-10 2001-08-16 Jonber Inc. Siege
EP1123023A4 (fr) * 1998-09-10 2003-06-04 Jonber Inc Siege
WO2005051133A1 (fr) * 2003-11-28 2005-06-09 Schukra Gerätebau AG Soutien lombaire
DE102004050858A1 (de) * 2004-10-18 2006-04-20 Dauphin Entwicklungs- U. Beteiligungs-Gmbh Stuhl mit verstellbarem Rückenlehnenträger
EP1698256A1 (fr) * 2005-03-04 2006-09-06 Bock 1 GmbH & Co. KG Siège, notamment chaise de bureau
WO2007038879A1 (fr) * 2005-10-03 2007-04-12 Vitra Patente Ag Siege
US7568765B2 (en) 2005-10-03 2009-08-04 Vitra Patente Ag Chair
CN101277632B (zh) * 2005-10-03 2010-12-01 维特拉专利股份公司 椅子
WO2007112236A1 (fr) * 2006-03-24 2007-10-04 Hni Corporation fauteuil inclinable avec une capacité de réglage améliorée
US7837265B2 (en) 2006-03-24 2010-11-23 Hni Corporation Reclining chair with enhanced adjustability
US8297701B2 (en) 2006-03-24 2012-10-30 Hni Technologies, Inc. Reclining chair with enhanced adjustability
US9504331B2 (en) 2007-03-13 2016-11-29 Hni Technologies Inc. Dynamic chair back lumbar support system
US11725382B2 (en) 2010-05-05 2023-08-15 Allsteel Inc. Modular wall system
US10927545B2 (en) 2010-05-05 2021-02-23 Allsteel Inc. Modular wall system
EP2622991A1 (fr) * 2012-01-31 2013-08-07 Sedus Stoll AG Soutien de lordose, inclinaison de dossier, chaise et procédé de réglage d'un soutien de lordose
US10172465B2 (en) 2013-03-15 2019-01-08 Hni Technologies Inc. Chair with activated back flex
US9332851B2 (en) 2013-03-15 2016-05-10 Hni Technologies Inc. Chair with activated back flex
US10893752B2 (en) 2013-03-15 2021-01-19 Hni Technologies Inc. Chair with activated back flex
JP2017200599A (ja) * 2013-06-06 2017-11-09 株式会社イトーキ 椅子
USD731833S1 (en) 2014-04-17 2015-06-16 Allsteel Inc. Chair
US10064493B2 (en) 2014-04-17 2018-09-04 Hni Technologies Inc. Flex lumbar support
USD833193S1 (en) 2014-10-15 2018-11-13 Artco-Bell Corporation Chair
US9801470B2 (en) 2014-10-15 2017-10-31 Hni Technologies Inc. Molded chair with integrated support and method of making same
USD796883S1 (en) 2014-10-15 2017-09-12 Hni Technologies Inc. Chair
US11337526B2 (en) * 2018-04-19 2022-05-24 Cramer Llc Chair having pliable backrest and methods for same
US11779121B2 (en) 2018-04-19 2023-10-10 Cramer Llc Chair having pliable backrest and methods for same
US11253076B2 (en) * 2019-02-05 2022-02-22 Unchair LLC Chair having open shoulder backrest

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