EP2622991A1 - Soutien de lordose, inclinaison de dossier, chaise et procédé de réglage d'un soutien de lordose - Google Patents

Soutien de lordose, inclinaison de dossier, chaise et procédé de réglage d'un soutien de lordose Download PDF

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Publication number
EP2622991A1
EP2622991A1 EP12198090.8A EP12198090A EP2622991A1 EP 2622991 A1 EP2622991 A1 EP 2622991A1 EP 12198090 A EP12198090 A EP 12198090A EP 2622991 A1 EP2622991 A1 EP 2622991A1
Authority
EP
European Patent Office
Prior art keywords
lumbar support
backrest
support
frame
lumbar
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
EP12198090.8A
Other languages
German (de)
English (en)
Other versions
EP2622991B1 (fr
Inventor
Klaus Maier
Markus Doerner
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
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Filing date
Publication date
Application filed by Sedus Stoll AG filed Critical Sedus Stoll AG
Publication of EP2622991A1 publication Critical patent/EP2622991A1/fr
Application granted granted Critical
Publication of EP2622991B1 publication Critical patent/EP2622991B1/fr
Active 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 present invention relates to a lumbar support, a backrest, a chair and a method for adjusting a lumbar support
  • the lordosis is the natural bauchierrtige curvature of the lumbar spine.
  • a lumbar support is an element on a chair that supports the lumbar spine of a person sitting on the chair. When lumbar spine muscles become tired during long periods of sitting, lice support helps to maintain the natural posture with lordosis.
  • a lumbar support is in the DE 20 2004 018 266 U1 described.
  • the lumbar support is formed with a support and, a backrest acting on the outside, supporting element.
  • the support member is mounted by means of an adjusting screw in the carrier or rotatable, whereby the distance of the support member from the carrier can be changed.
  • Such a lumbar support is rigid and consists of a high number of parts.
  • the present invention seeks to provide an improved and simplified lumbar support and a backrest, a chair and a method for adjusting a lumbar support available.
  • this object is achieved by a lumbar support with the features of claim 1 and / or by a backrest according to claim 14 and / or by a chair according to claim 18 and / or by a method having the features of claim 19.
  • the adjustable lumbar support essentially has only four parts, namely a frame, two anchoring extensions and a support device, wherein the support device can be turned over easily without loosening by hand and thus two different and easily adjustable lumbar support levels are provided.
  • the anchoring extensions and the frame can also be integrally formed with each other.
  • the lumbar support has essentially only two parts.
  • the anchoring extensions are set in a state in which they are displaceable in the vertical direction.
  • the anchoring processes do not have to be completely loose. Instead, it is also sufficient if the one translational degree of freedom in which the vertical displacement occurs is not fixed.
  • Fastening is to be understood as defining all degrees of freedom.
  • the loosening and fastening can be done by hand, for example surmountable resistance. This may in particular be a clamping and / or latching resistance, which is generated by extending in serrations locking lugs. In this case, loosening means manually overcoming the resistance so that the lumbar support is displaced by hand. Fastening in this case simply means letting go of the lumbar support, so that it remains in its position due to the resistance.
  • Vertical is to be understood here as essentially along the vertical direction of the backrest. This is generally also applicable to swivel backrests, so that in a pivotable backrest under the vertical direction is essentially to understand the direction of a swivel angle.
  • the anchoring extensions for height adjustment of the position of the lumbar support are formed on the backrest.
  • the height adjustment of the position of the lumbar support on the backrest is the ergonomic adjustment and is to be understood as a displacement of the entire lumbar support along the vertical direction of the backrest. This can be done, for example, along a frame of the backrest.
  • the anchoring extensions and / or the backrest, in particular a frame of the backrest can for this purpose with guide devices and / or locking devices and / or clamping devices and / or locking devices and / or may be provided, which are designed such that a height adjustment is easily carried out by hand.
  • the frame and / or the recess and / or the support device in the plan view has a shape which contains two parallel edges and two rounded portions connecting the two edges at their respective ends.
  • Edges in the frame are to be understood as outer edges between outer curves.
  • the recess edges are to be understood as inner edges of the frame between inner curves of the frame at the edge of the recess.
  • the support means edges are to be understood as outer edges between outer curves.
  • the rounding may include a semi-circular shape and / or a semi-elliptical shape and / or two rounded corners and / or the like.
  • the frame, the recess and the support means have in the direction of the edges on a longitudinal axis which extends between the two edges.
  • the support means and the recess with respect to their dimensions are formed so that the support means is disposed within the recess.
  • the support device in at least one position, can be completely or partially recessed flush with the frame and / or in the frame and / or protruding in front of the frame.
  • the recess and frame have a geometry with two have parallel edges and two edges connecting the two edges at their respective ends rounded portions, while the edges of the support means are shorter and formed at a smaller distance from each other than the edges of the recess.
  • the support means has a first surface and an opposite second surface which have a different surface shape.
  • surface form is meant the three-dimensional configuration of the respective side of the support device.
  • Different pages can thus be different, for example, with regard to the height of a pad of the support device. But it can also be a different width and / or height and / or depth and / or a different relief and / or a different outer contour and / or any other geometric property of the pages to be different. It can also be one of the two surfaces formed flat. In particular, a knobbed surface may also be provided on one side.
  • the support means on the first surface on at least partially convex shape in the axial direction. That is, the support means provides the greatest support at this side in the longitudinal center by the convex shape.
  • the support means on the second surface on at least partially concave in the axial direction on the shape. That is, the support means provides on this side in the longitudinal center by the concave shape the least support.
  • the frame is preferably designed so that a harmonious transition to the concave shape of the support means is provided.
  • the support means on both surfaces on a transversely at least partially convex shape can be provided.
  • an ergonomic shape, in particular with a lordosis corresponding curvature in the transverse direction of the support element can be provided.
  • a harmonious transition between supporting device and frame is made possible.
  • the anchoring extensions extend in the longitudinal direction of the frame and are each arranged opposite one another at the level of the middle of a rounded section.
  • the anchoring extensions can be aligned on the extended longitudinal axis of the frame.
  • the support device and / or the anchoring extensions are designed to compensate for tolerances and / or flexibly and / or in particular to provide supporting force.
  • the anchoring extensions can be configured flexibly for tensile and torsional loads.
  • the support member may be resilient to punctiform and / or surface pressure loads. The loads are usually predominantly perpendicular to the Backrest surface due to the person reclining.
  • the support means and the anchoring processes can thus adapt to varying loads, for example by movements of a person using the lumbar support. Therefore, a comfortable and ergonomic support of the lumbar spine is also ensured during movements or posture changes of a person or even when using the lumbar support of different people.
  • the support means polyurethane foam and / or a wire insert and / or the anchoring extensions and a plastic, in particular polyamide 6.
  • the materials mentioned provide sufficient stability while ensuring the other preferred mechanical properties, such as flexibility and Abstützkraftnachgiebtechnik.
  • alternative materials that a person skilled in the art can interpret differently.
  • at least two different materials with different properties can also be contained simultaneously in the support element.
  • one side of the support element may thereby be padded harder than the other side.
  • the wire insert may include a metal and, alternatively or additionally, another solid and / or elastically deformable material.
  • the lumbar support is provided adjustable by means of rotation of the support device with regard to the degree of its lordosis support.
  • a lumbar support may be provided in a first position in a second position, or at least to a lesser extent.
  • Fixing means may be, for example, guide rails and / or sliding devices and / or latching devices and / or clip devices and / or clamping devices and / or screwing devices and / or the like.
  • these are oriented vertically on the backrest and / or multiple present and vertically distributed to the backrest in an area in which the lumbar spine may be located.
  • a securing device is provided, which is provided on a side facing away from the seat of a chair side of the lumbar support for supporting the lumbar support and for securing the lumbar support against excessive deflection.
  • Fig. 1 shows a front view of a lumbar support 1 according to the invention.
  • This has a frame 4 with a recess 5.
  • Anchoring projections 7 are connected to the frame 4.
  • the recess 5 contains two storage facilities 6, in which a support means 8 is rotatably mounted about a longitudinal axis 9 by the bearing means 6.
  • the frame 4, the recess 5 and the support means 8 have in the illustrated plan view of a shape, which in each case two parallel edges 10; 10 '; 10 "and the two edges at their respective ends connecting rounded sections 11, 11 ', 11" contains.
  • Fig. 2 shows a plan view of a lumbar support 1 according to the invention.
  • a first surface 12 and a second surface 13 of the support device 8 is shown.
  • the first surface 12 has a slightly concave shape in the longitudinal direction of the support means 8.
  • the second surface 13 has, in the longitudinal direction of the support device 8, a convex shape with a curvature that is variable in the course of the second surface 13.
  • a wave-like contour of the anchoring extensions 7 is shown.
  • the wave-like contour of the anchoring processes 7 serves the flexibility and Abstützkraftnachgiebmaschine the lumbar support
  • Fig. 3a shows a longitudinal sectional view through a backrest according to the invention 2 and lumbar support 1.
  • the backrest 2 is designed as a mesh back and accordingly has a frame 19 and a network 18.
  • the net 18 is stretched over the frame 19 and serves as a flexible support surface on which a person can lean against the backrest 2.
  • this supporting force in the area of the lordosis is essentially absorbed by the lumbar support 1.
  • the lumbar support 1 deforms elastic, in particular in the region of the support device 5 and on the anchoring extensions 7.
  • Fig. 3b also shows a longitudinal sectional view through a backrest according to the invention 2.
  • a securing device 16 is provided, which is connected to the frame 19 and which serves the back support of the lumbar support 1, when a high support force is received. Furthermore, the securing device 16 serves to secure the lumbar support 1 against excessive stress and / or against undesirably large deformations.
  • the lumbar support 1 is anchored on the anchoring extensions 7 in the frame 19.
  • a region D between the lumbar support 1 in the unloaded state and the securing device 16 is provided. The lumbar support 1 can deform elastically in the region D until it is present at the securing device 16.
  • Fig. 4 shows an isometric view of a support means 8.
  • the support means is formed with two parallel edges 10 and two edges 11 connecting the two edges.
  • the support means includes a polyurethane foam with wire insert 14.
  • the wire insert 14 protrudes at both ends of the support means 8 at the center of the rounded portions 11.
  • the support device is mounted in the storage facilities of the frame 4.
  • Fig. 5 shows an isometric view of a frame 4 with anchoring projections 7.
  • the frame 4 has a recess 5 and 6 storage facilities.
  • the frame 4 and the recess 5 are each with two parallel edges 10 '; 10 "and two rounded edges 11 'connecting the two edges 10', 10"; 11 "shaped.
  • Fig. 6 shows an isometric detail view of the area A from Fig. 5 , Therein an anchoring extension 7 is shown enlarged.
  • the anchoring extension 7 has fastening means 15 '. These can be engaged with attachment means of the backrest or the frame of the backrest for anchoring the lumbar support to the backrest.
  • Fig. 7a shows an isometric view of a wire inserter 14. It has two ends 14 ', 14 "each forming a shelf of the wire insert 14 on the support means 8.
  • the wire insert 14 has a multi-arched shape, resulting in increased flexibility and elastic deformability of the wire insert 14 is used.
  • Fig. 7b shows an isometric view of a support means 8 with openings 20 and without the wire insert 14. Accordingly, no projections of the wire insert 14 but only the openings 20 for supporting the support means in the frame 4 are provided.
  • the bearing devices 6 have an extension which engages in openings 20 of the support device 8 and the support device 8 is thus mounted in the frame 4.
  • Fig. 8 shows a cross-sectional profile of a support means 8. This has a first surface 12 and a second Surface 13 on. Both surfaces 12, 13 are convexly shaped in the transverse direction of the support device 8, the shape of the second surface 13 having a greater convex curvature in the transverse direction than the shape of the first surface 12.
  • Fig. 9 shows an isometric view of fasteners 15, 15 '.
  • the fastening means 15, 15 ' are provided on the anchoring extensions 7 of the lumbar support 1 and on the frame 19 of the backrest 2.
  • the fastening means 15 on the frame 19 contain guide grooves and notches.
  • the guide grooves extend in a vertical direction V.
  • the fastening means 15 'of the anchoring extensions contain sliding lugs and latching lugs, wherein the slide lugs are provided for sliding in the guide grooves and wherein the latching lugs are provided for latching in the notches.
  • the locking lugs are provided flexibly.
  • the sliding lugs and locking lugs can thus be moved to adjust the height of the lumbar support 1 within the guide grooves.
  • a resistance by a spring resistance of the locking lugs is present at each notch. This resistance can be overcome by hand, but sufficiently high to hold the lumbar support 1 in the locking lugs when the lumbar support 1 is not
  • Fig. 10a shows a cross-sectional view through a backrest 2 according to the invention and lumbar support 1 in a first position of the support means 8.
  • the net 18 is stretched over the frame 19 of the backrest 2. In the first position, the net 18 faces the longitudinally concave shaped first side 12 of the support means 8.
  • the support device 8 is not available in front of the frame 4, but essentially continues its cross-sectional contour. In this first position, a low degree of lumbar support is provided.
  • Fig. 10b shows the cross-sectional view Fig. 10a in a second position of the support means 8.
  • the network 18, the longitudinally convex shaped second side 13 of the support means 8 faces.
  • the support device 8 is now clearly before the net 18 in front of the frame 4.
  • a high degree of lumbar support is provided.
  • Fig. 11 shows an office chair according to the invention 3. This is designed as an office swivel chair with a seat 17 and a mesh backrest 2, which has a lumbar support 1 executed.
  • the anchoring extensions 7 are fastened to the backrest 2 by leaving the latching lugs in a position are in which they are preferably located at two anchoring extensions 7 at the same height in a notch of the fasteners 15.
  • the support device 8 is rotated about the longitudinal axis 9 extending through the bearing devices 6. This is done by hand, by the, from the net 18 side facing away from the backrest 2 easily accessible, support member 8 is directly grasped and rotated.
  • the backrest is not limited to a mesh back, but may include any type of backrest, such as a fabric-covered, fixed backrest, the lumbar support according to the invention may be arranged in front of the fabric or under the fabric. Accordingly, it is accessible from the front or the back of the backrest.
  • the support means For rotating the support means are conceivable, such as a laterally operable on the backrest and coupled to the support device rotary lever or knob or the like. It is also a motor actuation for rotating the support means, for. B. by an electric motor, conceivable.
  • the frame can not Have recess and only like a bow on one side of the support device.
  • the frame is also conceivable as a closed shell with a depression, within which the support device can be provided rotatable or reversible.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
EP20120198090 2012-01-31 2012-12-19 Soutien de lordose, inclinaison de dossier, chaise et procédé de réglage d'un soutien de lordose Active EP2622991B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201210201318 DE102012201318A1 (de) 2012-01-31 2012-01-31 Lordosenstütze, Rückenlehne, Stuhl und Verfahren zum Einstellen einer Lordosenstütze

Publications (2)

Publication Number Publication Date
EP2622991A1 true EP2622991A1 (fr) 2013-08-07
EP2622991B1 EP2622991B1 (fr) 2014-11-05

Family

ID=47561152

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EP20120198090 Active EP2622991B1 (fr) 2012-01-31 2012-12-19 Soutien de lordose, inclinaison de dossier, chaise et procédé de réglage d'un soutien de lordose

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EP (1) EP2622991B1 (fr)
DE (1) DE102012201318A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015160693A1 (fr) * 2014-04-17 2015-10-22 Hni Technologies Inc. Support lombaire souple
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
US10172465B2 (en) 2013-03-15 2019-01-08 Hni Technologies Inc. Chair with activated back flex
US10463153B2 (en) 2016-06-09 2019-11-05 Steelcase Inc. Seating arrangement
US10927545B2 (en) 2010-05-05 2021-02-23 Allsteel Inc. Modular wall system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2196530A (en) * 1986-11-01 1988-05-05 Jmh Holdings Ltd A seat with a movable lumbar support device
EP0970639A1 (fr) * 1998-07-07 2000-01-12 Provenda Marketing Ag Support lombaire réglable
DE202004018266U1 (de) 2004-11-25 2005-01-13 Girsberger Holding Ag Stuhl mit einer verformbaren Rückenlehne und einer Lordosenstütze
EP1836932A2 (fr) * 2006-03-20 2007-09-26 Sedus Stoll AG Dispositif de soutien lombaire
CN201641143U (zh) * 2010-01-28 2010-11-24 富翔股份有限公司 办公椅靠背的升降调整装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2196530A (en) * 1986-11-01 1988-05-05 Jmh Holdings Ltd A seat with a movable lumbar support device
EP0970639A1 (fr) * 1998-07-07 2000-01-12 Provenda Marketing Ag Support lombaire réglable
DE202004018266U1 (de) 2004-11-25 2005-01-13 Girsberger Holding Ag Stuhl mit einer verformbaren Rückenlehne und einer Lordosenstütze
EP1836932A2 (fr) * 2006-03-20 2007-09-26 Sedus Stoll AG Dispositif de soutien lombaire
CN201641143U (zh) * 2010-01-28 2010-11-24 富翔股份有限公司 办公椅靠背的升降调整装置

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9504331B2 (en) 2007-03-13 2016-11-29 Hni Technologies Inc. Dynamic chair back lumbar support system
US10927545B2 (en) 2010-05-05 2021-02-23 Allsteel Inc. Modular wall system
US11725382B2 (en) 2010-05-05 2023-08-15 Allsteel Inc. Modular wall system
US10172465B2 (en) 2013-03-15 2019-01-08 Hni Technologies Inc. Chair with activated back flex
US10893752B2 (en) 2013-03-15 2021-01-19 Hni Technologies Inc. Chair with activated back flex
WO2015160693A1 (fr) * 2014-04-17 2015-10-22 Hni Technologies Inc. Support lombaire souple
US10064493B2 (en) 2014-04-17 2018-09-04 Hni Technologies Inc. Flex lumbar support
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
USD833193S1 (en) 2014-10-15 2018-11-13 Artco-Bell Corporation Chair
US10463153B2 (en) 2016-06-09 2019-11-05 Steelcase Inc. Seating arrangement
US10813459B2 (en) 2016-06-09 2020-10-27 Steelcase Inc. Seating arrangement

Also Published As

Publication number Publication date
DE102012201318A1 (de) 2013-08-01
EP2622991B1 (fr) 2014-11-05

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