EP1566118B1 - Support de colonne vertébrale - Google Patents

Support de colonne vertébrale Download PDF

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Publication number
EP1566118B1
EP1566118B1 EP05002319A EP05002319A EP1566118B1 EP 1566118 B1 EP1566118 B1 EP 1566118B1 EP 05002319 A EP05002319 A EP 05002319A EP 05002319 A EP05002319 A EP 05002319A EP 1566118 B1 EP1566118 B1 EP 1566118B1
Authority
EP
European Patent Office
Prior art keywords
item
seating furniture
furniture according
setting wheel
support
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.)
Not-in-force
Application number
EP05002319A
Other languages
German (de)
English (en)
Other versions
EP1566118A3 (fr
EP1566118A2 (fr
Inventor
Karl Würl
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.)
Steelcase AG
Original Assignee
Steelcase Werndl 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 Steelcase Werndl AG filed Critical Steelcase Werndl AG
Publication of EP1566118A2 publication Critical patent/EP1566118A2/fr
Publication of EP1566118A3 publication Critical patent/EP1566118A3/fr
Application granted granted Critical
Publication of EP1566118B1 publication Critical patent/EP1566118B1/fr
Not-in-force 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
    • 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
    • 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 invention relates to a chair with a device for supporting the spine in a backrest according to the preamble of claim 1.
  • FIG. 1 shows the US-A-4 043 594 a chair with a backrest, which is held by a coming from the bottom of the seat, bent by about 90 ° upwards extending strip-shaped support means.
  • This padded backrest is pivotable about a horizontal axis located approximately centrally in different tilted position.
  • an adjusting wheel comprehensive adjustment provided, over which the distance of the backrest at the lower end to the backrest supporting, vertically extending support means is pivotable.
  • Object of the present invention is to provide, starting from the generic state of the art an improved seating with an improved lumbar support device, a simple and space-saving adjustment mechanism for varying the position of the support transversely to the backrest, ie substantially perpendicular to the backrest of a chair having.
  • the support device comprises a bracket attached to the backrest of a chair and a device connected to the bracket adjustment with a holding element on which a support body is held. With the adjustment of the distance between bracket and support body is varied, whereby the position of the support body, which presses against the spine of the user can be adjusted substantially perpendicular to the backrest when using the support device in a chair.
  • the device according to the invention is characterized in that the adjusting device has an adjusting wheel arranged between bracket and supporting body, by the rotation of which the holding element is displaced in a rotationally fixed manner.
  • the arrangement of the adjusting wheel between bracket and support body is extremely space-saving, so that the support device according to the invention has small dimensions.
  • the holding element used in the device according to the invention serves for fastening of the support body, wherein in a particularly preferred embodiment, this holding element has an axis which is aligned substantially horizontally in the operating position of the support device.
  • This axis is preferably formed substantially cylindrical and inserted in a receptacle in the support body, wherein the receptacle is configured such that a tilting of the support body about the cylindrical axis is made possible.
  • the sitting comfort is increased because the support body adapts to the spine position and spinal column shape through its tilting mechanism.
  • the tilting mechanism is realized in that the holding element is connected to one or more webs, wherein a chamfered portion of the receptacle with the one or more webs cooperates such that the chamfered portion abuts when tilting the support body on or on the webs , whereby the tilt angle is limited.
  • a cover attached to the support body is preferably used, which is screwed for example to the support body.
  • the setting wheel is located directly on the bracket of the support device. In this way, the wheel is particularly well accessible to a user.
  • the setting wheel is connected to an intermediate piece, which engages in a displaceable between the bracket and the support body and connected to the holding element threaded part, wherein the intermediate piece is rotated via the setting wheel and thereby the threaded part and the holding element to be moved.
  • a simple implementation of a rotational movement is made possible in a rotationally fixed translation movement.
  • a sliding body is connected to the bracket of the supporting device, wherein on the sliding body, the threaded portion is plugged and can be slidably moved.
  • the voltage applied to the bracket end of the slider is preferably designed such that between bracket and slider a circular receptacle is formed in which the thumbwheel is rotatably mounted.
  • the slider is attached to the bracket, for example by means of a screw connection.
  • the intermediate piece has at one end a clamping device with which the intermediate piece is jammed in the setting wheel.
  • the clamping device has a pot-shaped portion with a circular wall and a plurality of projections protruding from the bottom of the pot, and the clamping device is connected to the setting wheel such that the circular wall engages in a corresponding circular receptacle in the setting wheel and the projections are clamped in corresponding pockets in the thumbwheel.
  • FIG. 1 shows the top view of a chair 1, which has a seat 2 and a backrest 3.
  • the backrest is made of stretchable or elastic material, which is stretched over a frame 4.
  • the support device according to the invention is attached in the form of a lumbar support with a bracket 5.
  • the lumbar support comprises a support body in the form of a lumbar cushion 8, which presses to support the spine against the backrest and can be adjusted in a direction perpendicular to the backrest.
  • an adjustment mechanism is provided which in FIG. 1 only schematically indicated.
  • the adjusting mechanism includes, inter alia, a thumbwheel 6 and a threaded portion 7, wherein the threaded portion is rotationally fixed by the rotation of the adjusting wheel and thereby the Lordosekissen is moved back and forth.
  • FIG. 2 shows a partially sectioned, perspective detail view of the lumbar support according to the invention.
  • the setting wheel 6 whose sectional plane is shown hatched, comprises a circular outer wall 6a, on whose outer surface is a corrugation for ease of rotation of the wheel.
  • the wheel also has an inner circular wall 6b, wherein a receptacle is provided by the walls 6a and 6b.
  • two opposite openings adjoin each other, which are each bounded by two partitions 6c.
  • the thumbwheel also has on its upper surface two circular circumferential projections 6d and 6e, which form the bearing surfaces of the setting wheel on the surface 5a.
  • the thumbwheel is connected via a slider 10 with the bearing surface 5a.
  • the slider has an elongated shape and comprises a cavity extending in the longitudinal direction of the slider and opens into an opening into which a screw 11 is inserted, which in turn with the Bearing surface 5a is screwed.
  • the slider has circumferential projections 10a and 10b.
  • the projection 10a forms an extension in the longitudinal direction of the slider, which rests against the bearing surface 5a.
  • the projection 10b is oriented perpendicular to the longitudinal direction of the slider and spaced from the bearing surface 5a.
  • a side surface of the projection 10a is adjacent to a side surface of the projection 10b, so that a receptacle is formed by the two side surfaces.
  • the edge of a provided in the adjusting wheel 6 inner opening is added. At this edge is also the projection 6d of the setting wheel, which abuts against the bearing surface 5a by means of the receptacle 10a and 10b formed by the receptacle.
  • a threaded part 7 is attached with a thread 7a, wherein the thread is flattened at two opposite portions.
  • This intermediate piece 9 is cup-shaped in the upper region with a pot outer wall 9a. This outer wall engages in the receptacle 6 formed by the walls 6a and 6b. From the pot-shaped portion further protrude two projections 9b, which are received in the formed by the partitions 6c pockets of the adjusting wheel and are jammed with the top of the setting wheel. In this way, a firm connection between the adjusting wheel 6 and spacer 9 is achieved.
  • a tapered cylindrical portion having at its lower end on the inside a circumferential spiral projection 9 a, which engages in the thread 7 a of the threaded part 7.
  • a holding element with a cylindrical axis 12 connects, which is connected via a plurality of webs 13 with the threaded portion.
  • the Lordosekissen 8 is mounted, which comprises an inner housing part 8a and an outer housing part 8b, wherein the housing part 8b webs 8c, on which rests the housing part 8a.
  • the cylindrical axis 12 of the holding element is located in a receptacle 14 of the outer housing part 8b, wherein the receptacle is configured such that a tilting of the lumbar cushion is made possible about the axis 12.
  • the tilt angle is limited in this case by a tapered portion which serves as a stop for the webs 13.
  • FIG. 5 The exact structure of the recording is related to FIG. 5 explained.
  • a cover plate 15 which has an edge 15b and a conical opening 15a, which lies over an opening 16 of the housing part 8b. Through the openings 15a and 16, the cover plate is screwed to the housing part 8b, so that the lumbar cushion 8 is held on the axis 12.
  • FIG. 2 shown adjusting mechanism works such that by a rotation of the adjusting wheel 6 and the jammed with the thumbwheel adapter 9 is rotated, whereby the projection 9a, the threaded portion rotationally fixed by a sliding movement on the slider for adjusting wheel or pushes away from this.
  • This allows a user to individually adjust the position of the lumbar cushion with respect to the backrest of the chair.
  • a tilting of the lumbar cushion on the cylindrical axis 12 is ensured.
  • FIG. 3 shows a sectional view of the in FIG. 2 shown Lumbar support.
  • the projection 9a of the intermediate piece 9 is configured spirally, so that it fits into the thread 7a of the threaded part 7.
  • the section indicated by the cover plate 15 hatched.
  • the cover plate has a wall 15 b, which bears against the outside of the receptacle 14.
  • the cover plate rests against a block 14c on one side of the receptacle.
  • the webs 13 abut on one side of the cover plate, whereas on the other side of a void 17 between web 13 and cover plate 15 is formed. Through this void, the tilting of the lumbar cushion 8 on the axis 12 is made possible.
  • FIG. 4 shows a perspective view of the threaded part used in the inventive device 7. From the figure it is clear that the thread 7a of the threaded portion in addition to the opposite flats also has an opening 7b.
  • FIG. 5 shows the perspective view of the outer housing part 8b of the lumbar cushion 8. From this figure it follows that the web 8c forms a wall surrounding the entire housing part. Furthermore, the exact structure of the receptacle 14 can be seen. For better visualization, the top of the shot was hatched. It can be seen that the receptacle is formed on its bottom for supporting the axis 12 cylindrical, wherein projecting from the bottom walls 14a and 14b bevels. Due to the bevels that form stops for the webs 13 of the threaded part 7, the tilting of the Axis 12 in the receptacle 14 allows. At one end of the receptacle are two blocks 14c, which serve as stops for the patch on the recording cover plate.
  • FIG. 6 shows a further perspective sectional view of the support device according to the invention.
  • the support device is located in FIG. 6 in a position in which the threaded part 7 is completely received in the intermediate piece 9. By turning the adjusting wheel 6 then this threaded part can be pushed out of the intermediate piece.
  • FIG. 7 shows the same view as FIG. 6 but with the threaded part removed.
  • the slider 10 is a separate, not connected to the threaded portion 7 component on which slides the threaded portion.
  • the slider comprises a substantially rectangular cavity, wherein a slot 10c is provided between at least two adjacent walls of the cavity. About the cavity, the screw 11 is inserted and screwed to the bracket.
  • Out FIG. 7 also results in the design of the cover plate 15, which covers the receptacle 14 in the housing part 8b. It can be seen in particular that the edge 15b of the cover plate rotates a large part of the receptacle and rests with its inside on the outside of the receptacle. As a result, slipping of the cover plate relative to the receptacle is prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
  • Surgical Instruments (AREA)

Claims (13)

  1. Meuble-siège comprenant un dispositif pour soutenir la colonne vertébrale dans un dossier, présentant les éléments suivants :
    - sur le dossier (3) est prévu un soutien lombaire (8) variable en position et maintenu sur un élément de maintien (12),
    caractérisé par les caractéristiques suivantes :
    - sur le dossier (3) est fixé un arceau (5),
    - entre le soutien lombaire (8) et l'arceau (5) est prévu un dispositif de réglage avec une roulette de positionnement (6),
    - le dispositif de réglage comprend en outre un corps coulissant (10),
    - une pièce filetée (7) reliée à l'élément de maintien (12) est montée en coulissement sur le corps coulissant (10), et
    - à l'aide de la roulette de positionnement (6), avec conversion du mouvement de rotation de la roulette de positionnement (6) en un mouvement de translation sans rotation de la pièce filetée (7) vers le corps coulissant (10) et ainsi l'élément de maintien (12), le soutien lombaire (8) est susceptible d'être réglé.
  2. Meuble-siège selon la revendication 1, caractérisé en ce que l'élément de maintien (12) comprend un axe qui s'étend essentiellement en direction horizontale dans la position de fonctionnement.
  3. Meuble-siège selon la revendication 2, caractérisé en ce que l'axe de l'élément de maintien (12) est réalisé essentiellement cylindrique et mis en place dans un logement (14) dans le corps de soutien (8), ledit logement (14) étant réalisé de telle façon qu'il est possible d'exécuter un basculement du corps de soutien (8) autour de l'axe cylindrique.
  4. Meuble-siège selon la revendication 3, caractérisé en ce que l'élément de maintien (12) est relié à une ou plusieurs barrettes (13), et dans lequel un tronçon en biais (14b) du logement (14) coopère avec la ou les barrettes (13) de telle façon que le tronçon en biais (14b) vient buter contre la ou les barrettes (13) lors du basculement de corps de soutien (8), grâce à quoi l'angle de basculement est limité.
  5. Meuble-siège selon la revendication 3 ou 4, caractérisé en ce que l'élément de maintien (12) est maintenu dans le logement (14) par un couvercle (15) monté sur le corps de soutien (14).
  6. Meuble-siège selon la revendication 5, caractérisé en ce que le couvercle (15) est vissé avec le corps de soutien (8).
  7. Meuble-siège selon l'une des revendications précédentes, caractérisé en ce que la roulette de positionnement (6) est appliquée contre le l'arceau (5).
  8. Meuble-siège selon l'une des revendications précédentes, caractérisé en ce que la roulette de positionnement (6) est reliée à une pièce intermédiaire (9), dont une extrémité s'engage dans une pièce taraudée (7) déplaçable entre l'arceau (9) et le corps de soutien (8) et reliée à l'élément de maintien (12), dans lequel à l'aide de la roulette de positionnement (6) la pièce intermédiaire (9) est mise en rotation et ainsi la pièce taraudée (7) et l'élément de maintien (12) sont capables de se déplacer solidairement en rotation.
  9. Meuble-siège selon la revendication 8, caractérisé en ce que le corps coulissant (10) est relié à l'arceau (5), et la pièce taraudée (7) est enfilée sur le corps coulissant (10) et déplaçable en coulissement.
  10. Meuble-siège selon la revendication 9, caractérisé en ce qu'une extrémité (10a, 10b) du corps coulissant (10) est appliquée contre l'arceau (5) et réalisée de telle manière qu'il se forme entre l'arceau (5) et le corps coulissant (10) un logement de forme circulaire dans lequel la roulette de positionnement (6) est montée avec possibilité de rotation.
  11. Meuble-siège selon la revendication 9 ou 10, caractérisé en ce que le corps coulissant (10) est vissé sur l'arceau (5).
  12. Meuble-siège selon l'une des revendications 8 à 11, caractérisé en ce que la pièce intermédiaire (9) comporte à une extrémité un moyen de serrage à l'aide duquel la pièce intermédiaire (9) est serrée dans la roulette de positionnement (6).
  13. Meuble-siège selon la revendication 12, caractérisé en ce que le moyen de serrage comprend un tronçon en forme de pot avec une paroi de forme circulaire (9a) ainsi qu'une pluralité de saillies (9b) qui se projettent de puis le fond du pot, ledit dispositif de serrage étant relié à la roulette de positionnement de telle façon que la paroi de forme circulaire (9a) s'engage dans un logement correspondant de forme circulaire dans la roulette de positionnement (6) et les saillies (9b) sont serrées dans des poches correspondantes dans la roulette de positionnement (6).
EP05002319A 2004-02-19 2005-02-03 Support de colonne vertébrale Not-in-force EP1566118B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004008230A DE102004008230B3 (de) 2004-02-19 2004-02-19 Vorrichtung zur Stützung der Wirbelsäule
DE102004008230 2004-02-19

Publications (3)

Publication Number Publication Date
EP1566118A2 EP1566118A2 (fr) 2005-08-24
EP1566118A3 EP1566118A3 (fr) 2006-05-31
EP1566118B1 true EP1566118B1 (fr) 2008-05-21

Family

ID=34706860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05002319A Not-in-force EP1566118B1 (fr) 2004-02-19 2005-02-03 Support de colonne vertébrale

Country Status (3)

Country Link
EP (1) EP1566118B1 (fr)
AT (1) ATE395846T1 (fr)
DE (2) DE102004008230B3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10814753B2 (en) 2016-09-30 2020-10-27 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Adjusting device of a lumbar support or of a side-bolster adjuster having a spindle drive for a seat element of a vehicle seat
US11305676B2 (en) 2016-09-30 2022-04-19 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Adjusting device having a spindle drive for a seat element of a vehicle seat

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1984549A (en) * 1932-05-31 1934-12-18 Burroughs Adding Machine Co Chair
US2139205A (en) * 1937-10-12 1938-12-06 Gen Fireproofing Co Chair
US4043594A (en) * 1976-03-12 1977-08-23 Gf Business Equipment, Inc. Adjustable chair rest member
US4730871A (en) * 1986-08-14 1988-03-15 Nepsco, Inc. Adjustable back rest
WO1991016840A1 (fr) * 1990-05-02 1991-11-14 Paxon John B Supports localises pour l'interieur des coussins, des fauteuils et des matelas, et reglage de ceux-ci
DE69334200T2 (de) * 1992-06-15 2008-12-24 Herman Miller, Inc., Zeeland Rückenlehne für einen Stuhl

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10814753B2 (en) 2016-09-30 2020-10-27 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Adjusting device of a lumbar support or of a side-bolster adjuster having a spindle drive for a seat element of a vehicle seat
US11305676B2 (en) 2016-09-30 2022-04-19 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Adjusting device having a spindle drive for a seat element of a vehicle seat

Also Published As

Publication number Publication date
DE102004008230B3 (de) 2005-10-06
EP1566118A3 (fr) 2006-05-31
ATE395846T1 (de) 2008-06-15
DE502005004159D1 (de) 2008-07-03
EP1566118A2 (fr) 2005-08-24

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