EP0797399A1 - Element cintre elastique en matiere plastique pourvu de renforts longitudinaux et transversaux pour un soutien de lordose a courbure reglable - Google Patents

Element cintre elastique en matiere plastique pourvu de renforts longitudinaux et transversaux pour un soutien de lordose a courbure reglable

Info

Publication number
EP0797399A1
EP0797399A1 EP95942156A EP95942156A EP0797399A1 EP 0797399 A1 EP0797399 A1 EP 0797399A1 EP 95942156 A EP95942156 A EP 95942156A EP 95942156 A EP95942156 A EP 95942156A EP 0797399 A1 EP0797399 A1 EP 0797399A1
Authority
EP
European Patent Office
Prior art keywords
arch element
arch
element according
housing
tension band
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
EP95942156A
Other languages
German (de)
English (en)
Other versions
EP0797399B1 (fr
Inventor
Knud Klingler
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.)
Klingler Knud
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
Publication of EP0797399A1 publication Critical patent/EP0797399A1/fr
Application granted granted Critical
Publication of EP0797399B1 publication Critical patent/EP0797399B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

  • Elastic arch element made of plastic with longitudinal and cross struts for an arch-adjustable lumbar support.
  • the invention relates to an elastic arch element made of plastic with longitudinal and transverse struts for an arch-adjustable lumbar support with a tension band, one end of which is connected to the arch element by means of a fastening element and the other end of which is connected to an eccentric device for adjusting the arch of the arch element.
  • Such a bulge element is known from DE-Cl-43 20 105.
  • the arch element known from this requires additional parts and a considerable assembly effort with regard to its connection to the adjusting device.
  • the object of the invention is to improve a bulging element for a lumbar support in such a way that it can be produced inexpensively in a simple manner and can be assembled with little effort.
  • Another object of the invention is to fasten an arch element in a simple and quick manner in a frame or frame part of a backrest without tools.
  • FIG. 2 shows a cross section through the arch element according to FIG. 1,
  • Fig. 4 shows a detail of a round pin with opposing flats in the middle part and at the exposed end.
  • the arch element 1 consists of a skeleton with cross struts 2 and longitudinal struts 3.
  • two further longitudinal struts 3 are arranged on both sides parallel to it, which form a central framework with the cross struts 2 connecting them, which as a whole is formed by means of the longitudinal struts 3, 4 can be arched around a horizontal axis.
  • the cross struts 2 project beyond this central scaffold on both sides and can be arranged at an angle to it in order to ensure lateral support.
  • the arch element 1 is preferably made entirely of a plastic, but also reinforcing inserts made of any material, for. B. a metal, and / or stiffening ribs can be provided.
  • cutouts 5 can be provided.
  • an extension 6 is made in one piece with the arch element 1.
  • the extension 6 is part of a housing 7 for receiving and storing an adjusting device.
  • the adjusting device contains a rotatable disc 8 which can be stored in the housing 7 and has an eccentric cam 9, the disc 8 being fixedly connected to, or being produced in one piece with, a helical toothed gear (not shown), which is provided with a Housing 7 mounted screw (not shown) is engaged, the screw via an extension
  • the housing 7 consists of the approach
  • the extension 6 and the closing part 12 have projections or depressions 13, 13 ', as indicated, for example, in FIG. 2, which serve as guides and / or snap connections for bringing together and holding the extension 6 and the closing part 12 to the closed housing 7 serve as soon as the disc 8 with the eccentric cam 9 and the helical gear and the worm with the extension 10 and the handwheel
  • projections and recesses 13 ' can each be designed so that they correspond to the thickness of the extension 6 or the closing part 12, so that the free end of the projection, for. B. by ultrasound, can be welded at the exit of the continuous open recess.
  • Approach 6 and locking part 12 can also only have aligned bores (not shown) which can be firmly connected to one another by means of suitable rivet or screw connections.
  • the closing part 12 can also be produced in one piece with the extension 6 of the arch element 1 via a material thinning serving as a joint. To close the housing
  • the central strut 4 On the back of the arch element 1 on the central strut 4, preferably in the area of the cross struts 2, there are bridges 14 which are used to receive and guide a tension band 15 serve.
  • the tension band 15 is preferably designed to be flexible in the sense of a leaf spring and can consist of a metal but also of a plastic or other flexible materials.
  • the central strut 4 has windows 16 in the region of the arrangement parts of the bridges 14.
  • a fastening element 17 for the tension band 15 is arranged on the central strut 4.
  • the fastening element 17 consists of a latching projection 18 with a sliding ramp 19 directed towards the shoulder 6.
  • the drawstring 15 has a latching opening 20, the size of which is designed such that the latching projection 18 and the sliding ramp 19 can be encompassed by it.
  • the drawstring 15 contains, at the end opposite the latching opening 20, a latching bore 21, the diameter of which is selected such that it can accommodate the eccentric cam 8, the rotation of which enables it to be without play or with little play.
  • the bridges 14 have a decreasing passage height. Elevations 22 can be provided on the central strut 4, adjacent to the bridges 14 - preferably to all of them - which preferably limit the passage height to the thickness of the tension band 15.
  • the curvature characteristic can be set, e.g. B. a different radius of curvature over the height. The radius of curvature can also be varied by the distances between the bridges 14.
  • the preload of the arch element 1 can be determined by varying the distance between the latching opening 20 and the latching bore 21 in the tension band 15.
  • a variant, not shown, of fastening the tension band 15 at the upper end of the arch element 1 can look as follows.
  • the fastening element 17 consists of a transverse slot in the central strut 4 and the drawstring 15 has a hook-shaped bend at the upper end 23 which is suitable for entering the transverse slot.
  • the drawstring 15 with the latching opening 20 is pushed in from the shoulder 6 under the bridges 14 and optionally via the elevation 22.
  • the front end 23 of the drawstring 15 snaps onto the sliding ramp 19 and its latching opening 20, since the drawstring end 23 is pretensioned by the ramp gradient, behind the latching projection 18 when the latching opening 20 slides over the free end of the latching projection 18. If necessary, with a slight manual curvature of the arch element 1, the locking bore 21 is now positioned over the eccentric cam 9.
  • a fastening element is provided in the exemplary embodiment for the tool-free arrangement of the arch element 1 in bearing parts 24 (see FIG. 4), which are fastened directly to the frame or indirectly to an additional frame part of a backrest.
  • the fastening element is preferably designed as a round pin 25, the central part of which is exposed in the housing 7 and the ends of which protrude from the housing 7 (see FIG. 1).
  • FIG. 4 shows a view of an exemplary embodiment of a round pin 25 in the leaf plane according to FIG. 1. From this it can be seen that the middle part and the exposed ends have flats 26, the flats 26 being offset from one another by 180 ° from the middle part and at the ends.
  • the bearing parts 24 are approximately hook-shaped, and have a clear spacing of their hook parts, when they are transported in a plane, from each other, which corresponds exactly to the thickness of the round pin 25 minus the thickness of the flats 26 at one end and at the middle part.
  • This clear width can, for. B. with a round pin 25 with a diameter of 5 mm and respective flats of 1 to 3 mm.
  • the bearing parts are at a distance which is equal to or slightly larger than the diameter of the round pin 25.
  • the round pin 25 and thus the arch element 1 can thus be inserted between the hook-shaped bearing parts 24, after which it is swiveled slightly about the axis of the round pin 25 - by only a few degrees - because of the then effective diameter of 5 mm can no longer be removed from storage. This enables extremely fast and secure mounting of the arching element on a frame or frame part.
  • the round pin 25 may have no flattening in other embodiments and in suitable holder z.
  • U-holder with resilient legs or elastically pivotable cap-like holder can be used to enclose the ends of the round pin (all not shown).
  • the arch element 1 can further fastening and / or guide elements for tool-free arrangement on frame parts such. B. on rods z. B. in the form of clips.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Prostheses (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

La présente invention concerne un élément cintré élastique (1) en matière plastique pourvu de renforts longitudinaux et transversaux (2, 3, 4) et constituant un soutien de lordose à courbure réglable, avec une bande de traction (15) dont l'une des extrémités (23) est reliée à l'élément cintré (1) au moyen d'un élément de fixation (17) et l'autre extrémité est reliée à un dispositif à excentrique servant à régler la courbure de l'élément cintré (1). Selon l'invention, l'élément cintré (1) comporte une saillie (6) qui est d'une pièce avec lui et qui fait partie d'un boîtier (7) servant au logement et au montage du dispositif de réglage. Des éléments de guidage de la bande de traction (15) sont réalisés d'une pièce avec l'élément cintré (1), sous la forme de ponts (14) situés au-dessus du renfort longitudinal médian (4) de l'élément cintré (1), ces ponts présentant différentes hauteurs de passage.
EP95942156A 1994-12-15 1995-12-14 Element cintre elastique en matiere plastique pourvu de renforts longitudinaux et transversaux pour un soutien de lordose a courbure reglable Expired - Lifetime EP0797399B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4444803 1994-12-15
DE4444803A DE4444803C2 (de) 1994-12-15 1994-12-15 Elastisches Wölbelement aus Kunststoff mit Längs- und Querstreben für eine wölbungsverstellbare Lordosenstütze
PCT/EP1995/004947 WO1996018326A1 (fr) 1994-12-15 1995-12-14 Element cintre elastique en matiere plastique pourvu de renforts longitudinaux et transversaux pour un soutien de lordose a courbure reglable

Publications (2)

Publication Number Publication Date
EP0797399A1 true EP0797399A1 (fr) 1997-10-01
EP0797399B1 EP0797399B1 (fr) 1998-11-11

Family

ID=6535951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95942156A Expired - Lifetime EP0797399B1 (fr) 1994-12-15 1995-12-14 Element cintre elastique en matiere plastique pourvu de renforts longitudinaux et transversaux pour un soutien de lordose a courbure reglable

Country Status (5)

Country Link
US (1) US5934752A (fr)
EP (1) EP0797399B1 (fr)
JP (1) JP4012565B2 (fr)
DE (2) DE4444803C2 (fr)
WO (1) WO1996018326A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1312500A1 (fr) * 1998-06-15 2003-05-21 Fico Cables, Lda Support de colonne lombaire à hauteur réglable

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AT394829B (de) 1989-08-04 1992-06-25 Schuster Wilhelm Rueckenlehne fuer einen fahrzeugsitz, mit einer verstellbaren lendenstuetze
DE4320105C1 (de) 1993-06-17 1994-10-13 Ameu Management Corp Verstellvorrichtung für ein biegeelastisches Stützelement einer Rückenlehne
DE19825225A1 (de) * 1998-06-05 1999-12-16 Knud Klingler Wölbungsverstellbare Stütze, insbesondere Lordosenstütze, für Sitze und Liegen aller Art
DE19856561C1 (de) * 1998-12-08 2000-04-20 Faure Bertrand Sitztech Gmbh Sitz, insbesondere Kraftfahrzeugsitz
CA2268046C (fr) * 1999-04-07 2004-03-02 Christopher Cosentino Systeme de reglage a tige coulissante
US6616227B2 (en) 2001-02-21 2003-09-09 Schukra North America Powered actuator for lumbar unit
US6619739B2 (en) * 2001-03-01 2003-09-16 L & P Property Management Company Universal ergonomic support with self-contained actuator
DE10110138A1 (de) * 2001-03-02 2002-09-05 Schwarzbich Joerg Verfahren zur Herstellung einer Lordosenstütze
GB0106247D0 (en) * 2001-03-14 2001-05-02 Williams David N L Improvements relating to supports
US6758522B2 (en) 2001-03-29 2004-07-06 L&P Property Management Company Apparatus and method for varying coefficients of friction in a variable apex back support
WO2003031222A1 (fr) 2001-10-11 2003-04-17 L & P Property Mangement Company Mecanisme de support lombaire motorise
US6652028B2 (en) 2001-11-02 2003-11-25 L & P Property Management Apparatus and method for lumbar support with variable apex
US6676214B2 (en) 2001-11-16 2004-01-13 L & P Property Management Company Method and apparatus for lumbar support with integrated actuator housing
US6779844B2 (en) 2001-12-14 2004-08-24 L&P Propety Maqnagement Company Arching lumbar support with weight distribution surface
US6652029B2 (en) 2001-12-20 2003-11-25 L & P Property Management Company Unitized back plate and lumbar support
US6908152B2 (en) 2001-12-14 2005-06-21 L & P Property Management Company Push lumbar support with flexible pressure surface
US6908153B2 (en) 2002-12-02 2005-06-21 L&P Property Management Company Power lumbar support cable apparatus and method
US7052087B2 (en) 2002-12-09 2006-05-30 L&P Property Management Company Method and apparatus for a scissors ergonomic support
US6905170B2 (en) * 2003-01-22 2005-06-14 L & P Property Management Company Fold down seat lumbar support apparatus and method
DE10337881A1 (de) * 2003-08-18 2005-03-24 Schukra Gerätebau AG Lordosenstützkorb
US7775595B2 (en) 2004-02-06 2010-08-17 Schukra Of North America Drive mechanism
CN100545000C (zh) 2004-07-30 2009-09-30 L&P产权管理公司 组合式腰靠装置
US7549700B2 (en) * 2004-09-07 2009-06-23 Schukra Of North America Mechanism for thin seat lumbar
DE102004063232B4 (de) * 2004-12-22 2016-08-18 Volkswagen Ag Progressive Lordosenlagerung im unteren Lehnenrahmen
EP1680983B1 (fr) 2005-01-12 2012-11-28 L&P Swiss Holding Company Structure de siège équipé d'une unité de couplage
EP1680984B1 (fr) 2005-01-12 2007-08-15 L&P Swiss Holding Company Dispositif de soutien lombaire et structure de siège afférante
CN101370409A (zh) 2006-12-11 2009-02-18 舒克拉北美有限公司 用于气候控制座椅的腰部系统
US7984949B2 (en) 2007-04-24 2011-07-26 Schukra Of North America Lumbar and bolster support for second row seat
CA2655083C (fr) 2008-02-22 2016-07-05 Schukra Of North America Soutien lombaire rabattable a pression constante
US9193280B2 (en) 2012-09-13 2015-11-24 Leggett & Platt Canada Co. Lumbar support system
US9193287B2 (en) 2012-09-13 2015-11-24 Leggett & Platt Canada Co. Lumbar support system
US9199565B2 (en) 2012-09-13 2015-12-01 Leggett & Platt Canada Co. Lumbar support system
US10632882B2 (en) 2012-09-13 2020-04-28 Leggett & Platt Canada Co. Lumbar support system
US10306990B2 (en) 2014-05-19 2019-06-04 Milsco Manufacturing Company, A Unit Of Jason Incorporated Adjustable seat occupant support assembly
US10926683B2 (en) * 2018-04-12 2021-02-23 Ts Tech Co., Ltd. Conveyance seat

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1312500A1 (fr) * 1998-06-15 2003-05-21 Fico Cables, Lda Support de colonne lombaire à hauteur réglable

Also Published As

Publication number Publication date
JP4012565B2 (ja) 2007-11-21
JPH10510442A (ja) 1998-10-13
US5934752A (en) 1999-08-10
DE4444803C2 (de) 1997-04-24
EP0797399B1 (fr) 1998-11-11
DE59504242D1 (de) 1998-12-17
WO1996018326A1 (fr) 1996-06-20
DE4444803A1 (de) 1996-06-20

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