EP1039815B1 - Fauteuil avec systeme mecanique de reglage - Google Patents

Fauteuil avec systeme mecanique de reglage Download PDF

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Publication number
EP1039815B1
EP1039815B1 EP98946677A EP98946677A EP1039815B1 EP 1039815 B1 EP1039815 B1 EP 1039815B1 EP 98946677 A EP98946677 A EP 98946677A EP 98946677 A EP98946677 A EP 98946677A EP 1039815 B1 EP1039815 B1 EP 1039815B1
Authority
EP
European Patent Office
Prior art keywords
seat
support
chair
adjustment mechanism
rotational axis
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.)
Expired - Lifetime
Application number
EP98946677A
Other languages
German (de)
English (en)
Other versions
EP1039815A1 (fr
Inventor
Egon Bräuning
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.)
Vitra AG
Original Assignee
Vitra Patente 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 Vitra Patente AG filed Critical Vitra Patente AG
Publication of EP1039815A1 publication Critical patent/EP1039815A1/fr
Application granted granted Critical
Publication of EP1039815B1 publication Critical patent/EP1039815B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • A47C1/0303—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction
    • A47C1/0305—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction by peg-and-notch or pawl-and-ratchet mechanism
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03283—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with fluid springs

Definitions

  • the present invention relates to a chair, in particular an office swivel chair, with a height-adjustable seat surface and an incline-adjustable back part, the adjustment of the back part being accompanied by a synchronous change in position of the seat surface.
  • the chair has a swivel axis running across the width of the seat surface, which is formed by articulated connections on the seat support.
  • the entire chair mechanism is arranged below the seat plate. Height and inclination are adjusted using springs, preferably gas springs. In order to optimize the kinematics of the incline and to set a preload superimposed on the gas spring, it is practical to provide an additional helical compression spring.
  • the gas springs are actuated by adjusting levers which are arranged below the seat plate and to which the user has easy access when sitting. If the locking of the tilt adjustment is released, you can move from the vertical position to the tilt position by shifting your body weight, whereby the seat plate follows the adjustment.
  • Chairs of this type offer the user increased comfort, since the back part and the seat adapt ergonomically to the seated posture.
  • From CH-A-568 738 is the principle of dividing the seat into one fixed thigh pad and a swiveling buttock pad, which known as the backrest.
  • the subdivision is made with hinge links realized, which are arranged in the side parts of the support frame.
  • CH-A-582 498 there is also a chair with a swiveling backrest and associated buttock pad proposed, the reference of the The seat extends beyond the swivel axis to the rear of the frame extends.
  • a gas spring is used for the inclination adjustment. It however, the height adjustability and an integrated adjusting mechanism are missing.
  • WO-A-98/16140 discloses a chair with a pivoting back part, the axis of rotation of a rear area on the seat with buttocks Are defined.
  • a section of the back part extends to the axis of rotation, where the back part is hinged to the seat support.
  • On one-piece upholstery cover is attached to the seat support and runs from the seat beyond the axis of rotation to the frame part behind the seat cover.
  • the back part consists of the one hinged in the hinge connection Back support and a bow-shaped back tensioner to be fixed above together, which is inserted into the back of the cushion cover becomes.
  • the upholstery cover spans the seat and back.
  • the back support has a cross bar to which the cushion cover is attached is and from there on to the back part.
  • the seat is almost at an inclination of the backrest fixed, only the seat cover as a cushion section follows a changed inclination so that there is no complete synchronization is realized between the back and seat.
  • armrests are missing on this chair.
  • the invention is therefore based on the object for a chair with a the pivoting axis of the seat, the full synchronous sequence between to realize the pivoting movement of the back part and the seat.
  • the basic structure of the chair mechanism should be as uncomplicated as possible, reliable, low-service and easy to use. Furthermore should the mechanics as a compact construction integrate inconspicuously in the chair.
  • the back cover is intended to provide good support for the user's lumbar area Offer.
  • the chair must have height-adjustable armrests be equipped that are easy to adjust and still high Have stability in the selected setting.
  • the chair should Have it mass-produced in a rational and cost-effective manner and at the same time enable an original aesthetic.
  • the actuating mechanism is designed for a chair that is based on a known one Underframe with a gas spring inserted vertically for height adjustment rests.
  • the seat support arranged at the bottom of the seat part is on the telescopically extendable piston rod of the gas spring is attached.
  • the seat support carries a seat plate, and a swiveling back part with back carrier is on one Main axis of rotation articulated, which above, across the seat plate, parallel to their leading edge.
  • An inclination spring is on the one hand on the seat support on a fixed axis of rotation and on the other hand on the back support on a articulated moving axis of rotation.
  • the seat plate has on its underside Guide slots on, in the support arms of the seat support transverse to the main axis of rotation slidably intervene.
  • the seat plate is on the moving axis of rotation, together with the inclination spring, articulated on the back support. It is beneficial two mutually spaced guide links near the front edge of the Seat plate provided, the guide link from a forehead boundary have as a stop. First arranged on the free ends of the support arms Bearing pins engage in the guide links.
  • Two arms of the back support which extend above the side of the seat plate, and in principle two vertical branches - these represent angled extensions from the cross beams of the seat support running below the seat plate dar -, are articulated together in the main axis of rotation.
  • the Tree branches each have an insertion opening for receiving an armrest.
  • the Back support has a cross bar that extends between the arms, parallel to the Main axis of rotation extends, and has two supports from the meeting of the crossbar with the respective arm upwards.
  • On the cross beam is an axle rod is attached, through which the movable axis of rotation with the articulated Seat plate and the articulated tilt spring runs.
  • a back cover is stretched between the arms, with the arms an arched back tensioner can be attached so that the arms only are frustoconical.
  • the back cover which can be pulled onto the back support, there is a height-adjustable and fixable at the chosen height Lumbar reinforcement insert - arranged in the form of a flexible plate.
  • An upwardly projecting fixing tongue extends from the plate.
  • the reinforcement insert is inserted into a pocket that is open at the top Back cover is incorporated.
  • On the back cover by one Slit protrude the fixing tongue and on the back cover are for detachable attachment Fixing components, e.g. Velcro fasteners provided. In this way can maintain the selected height position of the lumbar reinforcement insert become.
  • the back cover on the back of the crossbar fixed At its lower edge is the back cover on the back of the crossbar fixed. This is advantageously done with fastening elements protruding through the cross member, with which the axle rod is attached to the cross member.
  • the armrests attached to the seat support each have an approximately vertical support with one arranged above Armrest on, with a notch on the support with a systematic Notch grid is present.
  • the notches are one above the other in a row and are semicircular.
  • the notch section is in the insertion opening of the inserted upright branch of the seat support. There is a hole in this branch introduced, which partially touches the inserted notch area.
  • In the bore is a spring-supported control button that locks engages in the contour of a notch in position with respect to the control button.
  • the Cross section of the support is preferably elliptical, the notches on one The main vertex of the ellipse lies.
  • the control button is axial with a plate element connected, from which a circle segment engages in the positioned notch.
  • the essential advantages of the actuating mechanism lie in the efficient and comfortable realized synchronization between the movements of Back support and seat plate.
  • the chair is perfected by height-adjustable Armrests, the adjustment being easy to handle for the user is and set positions stable, even with higher loads become.
  • the height-adjustable lumbar reinforcement insert that can be used in the back cover provides individually positioned support for the user's lumbar area.
  • the entire chair is divided into two levels, the per se known undercarriage U unddenierdas base U patch seat S, which includes inventions and is divided inein seat portion and a back portion.
  • the base frame U consists of a typical five-armed star foot 1 with rollers 11 attached to the ends of the arms 10 , which rest on the floor.
  • the center of the star base 1 is formed by a sleeve piece 12 in which a vertical gas spring 13 is inserted vertically.
  • a telescopically extendable piston rod 14 protrudes from the vertical gas spring 13 on the axis A , on which the seat support 2, which is the base part of the entire seat S , is placed.
  • the seat S can be rotated about the axis A and its height can be adjusted with the extension or retraction of the piston rod 14 on the axis A.
  • the seat S includes a seat plate 3 with a seat cushion 34, a back support 4, a tilt gas spring 5, on the piston rod of which a helical spring 52 is pushed, a back cover 6 and two armrests 7.
  • the inclined gas spring 5 is articulated in the horizontal axis of rotation D1 .
  • the tilt gas spring 5 is articulated on the cross bar 40 of the back support 4 in the horizontal axis of rotation D2 .
  • the arms 42 are hinge-connected to the seat support 2, so that here the main axis of rotation D - outside of the transverse bar 40 extend ascending two vertical supports 41 and two substantially according to the - towards the front edge 30 of the seat plate 3 around which the back support 4 can be pivoted as a whole.
  • a bow-shaped back tensioner 43 is attached to the two vertical supports 41 and is covered by the back cover 6 .
  • the massive four-armed seat support 2 has the rear base section 20 with the bore 200 , into which the piston rod 14 of the vertical gas spring 13 is inserted.
  • a crossbeam 21 extends from the base part 20 to both sides, horizontally and parallel to the main axis of rotation D. At the ends, the crossbeams 21 continue with an upwardly angled branch 22 , into which the lower, free ends of the supports 71 Armrests 7 are inserted and through which the main axis of rotation D extends with the articulated back support 4 .
  • the height of the armrests 7 can be fixed with an operating button 70 that is accessible laterally on the branch 22 .
  • the supports 71 extend from the branch 22 upwards to the horizontally arranged armrest 72. Also from the base part 20, between the two cross arms 21, two support arms 23 extend, which strive towards the front edge 30 of the seat plate 3 .
  • two mutually spaced guide links 32 are arranged, which run towards the front edge 30 of the seat plate. At the front, near the front edge 30, the guide links 32 end with a front boundary 320 . In the guide slots 32, the free ends engage the support arms 23, on which bearing pin 230 are, a. Also on the underside of the seat plate 3 are the operating levers 130, 50 which are easily accessible by the user while sitting with his hands, for the actuation of the vertical gas spring 13 and the tilt gas spring 5 . Finally , two detachable fastening elements 33, for example screws, protrude from the underside of the seat plate 3, near the rear edge 31 thereof.
  • the seat plate 3 resting on two hinge plates 8 can be fixed at an adjustable distance from the cross member 40 of the back support 4 .
  • the journals 230 of the support arms 23 move further into the guide link 32 , ie in the direction of their boundary 320.
  • the seat depth can thus be adapted to the individual user needs.
  • the line of alignment of both bearing journals 230 results in the horizontal sliding axis G.
  • the hinge plates 8 like the tilt gas spring 5, are articulated on the cross bar 40 .
  • the seat plate 3 is maximally fixed in the direction of the back support 4 .
  • the bearing pins 230 of the seat support 2 are located furthest forward, directly in front of the end boundaries 320 of the guide link 32, while the fastening elements 33 are in the elongated holes 80 of the hinge plates 8 at the rear stop.
  • the hinge plates 8 are pivotally mounted together with the tilt gas spring 5 on the horizontal axis of rotation D2 .
  • the axis of rotation D2 is formed by an axle rod 81 which is fixedly fixed along the cross bar 40 , the inclination gas spring 5 being arranged between the two hinge plates 8 and the axis of rotation D2 being parallel to the main axis of rotation D.
  • the axle rod 81 is partially embedded in the cross member 40 .
  • a fastening element 33 preferably consists of a threaded bolt 330 protruding from the underside of the seat plate 3 and a nut 331 which can be screwed onto the hinge plate 8 from below.
  • the threaded bolt 330 is firmly seated in the seat plate 3 and projects through a longitudinal slot 80 in the hinge plate 8, so that the latter Can be slidably fixed over the extent of the longitudinal slot 80 and thus the position of the sliding axis G is determined.
  • Bowden cables 131.51 run from the operating levers 130.50 to actuate the height and inclination gas springs 13.5 .
  • the valve rod for triggering the tilt gas spring 5 faces the base section 20 of the seat support 2 .
  • a ball socket 201 is inserted, in which a bearing ball 202 is located as a support for the tilt gas spring 5 on the axis of rotation D1.
  • An extension of the valve rod of the inclination gas spring 5 extends through the bearing ball 202.
  • the switching element which is connected to the associated operating lever 50 via a Bowden cable.
  • the switching element moves the valve rod of the tilt gas spring 5, which thus comes into the open position. If no body pressure is exerted on the back support 4 , the piston rod extends and the back support 4 straightens up to the vertical position . If body pressure is exerted on the back support 4 - the inclination gas spring 5 is not already in the maximum retracted state - the back support 4 can be pressed into its maximum inclination position .
  • branch 22 there is an insertion opening 220 accessible from above for receiving the lower notch portion 710 (see FIGS. 5A and 5B) of the support 71 of the insertable, height-adjustable armrest 7.
  • the control button 70 for the height locking of the armrest 7 is located on the outer wall of the armrest 7 Astes 22 and is aligned tangentially past the insertion opening 220 .
  • the articulated connection on the main axis of rotation D between the branch 22 and the tapering arm 42 is in each case formed by a cutout 221, 421 of half the material thickness, so that the pegs 222, 422 rounded off at the front engage in the cutout 421, 221 located opposite each other.
  • By the abutting pins 222.422 A stuck shaft pin 423.
  • the back cover 6 is pulled over the length of the axial rod 81 to the rear side of the transverse bar 40 and by passing through the shaft pin 423 fasteners 424 - such as screws - where fixed.
  • the back cover 6 has a recess 60 .
  • the bore 200 for receiving the piston rod 14 of the vertical gas spring 13 can be seen, in addition to the bore 200 the guides 203 for the Bowden cables 51, 131 and further back the ball socket 201 for receiving the release ball 202 for the tilt gas spring 5 and next to the ball socket 201 Recess 204 for the incoming Bowden cable 51.
  • the plug-in opening 220 going in , the operating button 70 and the pins 222 located on the main axis of rotation D and the associated cutouts 221.
  • the support arms 23 show in front the bearing pins 230 protruding to the side ,
  • the behavior of the back support 4 and the seat plate 3 when the back support 4 is tilted back is considered .
  • the seat plate 3 is fixed in a defined position by means of the fastening elements 33 .
  • the sliding axis G lies within the guide link 32 in the position P 0 , ie relatively away from the end boundaries 320 and the seat plate 3 has its normal position.
  • the distance between the axis of rotation D2 and the original position P 0 is shortened. Since the seat plate 3 transversely to the main axis of rotation D with the guide slots 32 on the bearing pin 230 of the support arms 23 depends of the seat support 2, the seat plate 3 toward the leading edge is pushed 30th The sliding axis G shifts to the position P 1 by the distance s . At the same time, the seat plate 3 lowers significantly at the rear edge 31 , while a proportional, relatively slight lifting occurs at the front edge 30 . There is thus a synchronous sequence of movements between the back support 4 and the seat plate 3.
  • the armrest 7 has the approximately vertical support 71, to which the approximately horizontal armrest 72 is fastened at the top.
  • the basically elliptical support 71 has a notch section 710 with a systematic notch grid, consisting of uniformly objected semicircular notches 711, which lie one above the other on a main apex according to the geometry theory.
  • the curves of the notches 711 indicate the central axis M of the support 71 .
  • a bore 73 is provided which is oriented tangentially past the insertion opening 220 and which internally has a constriction 730 .
  • a spring-loaded control button 70 designed as a push button is inserted from one side of the hole; from the other side a plate element 74, whose reduced-diameter shaft 740 projects through the constriction 730 and is firmly connected to the control button 70 .
  • a helical spring 75 strives to push the control button 70 outward and pulls the plate element 74 into the bore 73 .
  • a circular segment 741 of the plate element 74 engages in the notch 711 set to the level of the operating button 70 .
  • the armrest 7 is thus fixed in the extended height. To release it, the control button 70 must be pressed in against the action of the coil spring 75 , so that the plate element 74 and the notch 711 coming out of engagement.
  • the armrest 7 can now be adjusted in height until a notch 711 corresponding to the desired height is occupied by the plate element 74 .
  • the back cover 6 has an internal, upwardly open pocket 61 in the lumbar region, into which a plate-shaped lumbar reinforcement insert 9 is inserted.
  • the reinforcing insert 9 has transverse elastic slots 90 and an upwardly projecting fixing tongue 91.
  • This fixing tongue 91 projects through a slot 62 in the back cover 6 on the rear of the chair, the slot 62 being located above the pocket 61 .
  • the back cover On the front, towards the user, the back cover has padding 63.
  • the fixing tongue 91 is released from the back cover 6 and the reinforcing insert 9 is pushed further into the pocket 61 or pulled out.
  • the lower ends of the back cover 6 are fixed on the rear side of the cross bar 40 .

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Claims (12)

  1. Fauteuil avec système mécanique de réglage comportant:
    a) un châssis (U) avec un pied (1) s'appuyant au sol avec un axe vertical (A) incorporant un ressort pneumatique (13) avec une tige piston (14) à coulissement hydraulique pour régler la hauteur du fauteuil;
    b) un siège (S) avec:
    ba) une partie d'assise étayée en dessous par un support de siège (2) s'appuyant lui-même sur la tige piston (14), et une plaque de siège (3) portée par le support de siège (2); et
    bb) une partie dorsale pivotante, équipée d'un support de dossier (4) articulé sur un axe de rotation principal (D) qui se prolonge en haut, en travers de la plaque de siège (3), parallèlement au bord avant (30) de ladite plaque de siège.
    c) Un ressort d'inclinaison (5) accouplé, d'une part, au support de siège (2) sur un axe de rotation (D1) et, d'autre part, au support de dossier (4) sur un axe de rotation (D2), caractérisé en ce que:
    d) la plaque de siège (3) qui possède, à sa face inférieure, des coulisses de guidage (32), dans lesquelles les bras porteurs (23) du support de siège (2) s'accrochent en travers le l'axe de rotation principal (D) de manière coulissante; et
    e) la plaque de siège (3) accouplée au support de dossier (4) sur l'axe de rotation (D2).
  2. Fauteuil avec système mécanique de réglage selon revendication 1, caractérisé en ce que l'assemblage articulé sur axe de rotation principal (D) de:
    a) deux bras (42) du support de dossier (4) qui s'avancent latéralement au-dessus de la plaque de siège (3); et de
    b) deux branches verticales (22) formant en principe les prolongements en équerre des deux consoles transversales (21) du support de siège (2) s'étendant en dessous de la plaque de siège (3), tandis que
    c) les branches (22), sont chacune pourvues d'une encoche (220) dans laquelle vient s'emmancher l'accoudoir.
  3. Fauteuil avec système mécanique de réglage selon revendication 1 ou 2, caractérisé en ce que
    a) le support de dossier (4) muni d'un longeron transversal (40) qui s'étend entre les bras (42), parallèlement à l'axe de rotation principal (D);
    b) le support de dossier (4) pourvu de deux appuis (41) remontant à partir du point de rencontre entre le longeron transversal (40) et le bras respectif (42);
    c) une tige axiale (81) fixée sur le longeron transversal (40) avec axe de rotation (D2) sur lequel s'articulent la plaque de siège (3) et le ressort d'inclinaison (5), celui-ci étant de préférence un ressort pneumatique avec ressort hélicoïdal (52) rapporté; et
    d) un revêtement de dossier (6) tendu entre les deux bras (42).
  4. Fauteuil avec système mécanique de réglage selon revendication 3, caractérisé en ce que
    a) deux plaques-charnières (8) articulées sur la tige axiale (81), respectivement disposées de part et d'autre du ressort d'inclinaison (5); et
    b) une plaque de siège (3) fixée sur les plaques-charnières (8) à distance réglable de l'axe de rotation (D2).
  5. Fauteuil avec système mécanique de réglage selon revendication 3, caractérisé en ce que
    a) un coussinet sphérique (201) logé dans le support de siège (2) et prévu pour recevoir une bille de roulement (202);
    b) la bille de roulement (202) servant d'appui au ressort pneumatique d'inclinaison (5) sur l'axe de rotation (D1);
    c) un prolongement de tige de soupape du ressort d'inclinaison (5) pneumatique qui s'étend au delà de la bille de roulement (202); et
    d) un organe de commutation dans le prolongement de tige, relié à un levier de manoeuvre (50) correspondant, qui permet de soulever le dispositif d'arrêt (5) du ressort d'inclinaison pneumatique.
  6. Fauteuil avec système mécanique de réglage selon revendication 1, caractérisé en ce que
    a) deux coulisses de guidage (32) placées à distance l'une de l'autre, près du bord avant (30) de la plaque de siège (3);
    b) les coulisses de guidage (32) ayant, à l'avant, une délimitation frontale (320);
    c) des tourillons (230) disposés tout à l'avant, aux extrémités libres des bras porteurs (23), et qui s'accrochent dans les coulisses de guidage (32).
  7. Fauteuil avec système mécanique de réglage selon revendications 1, 2 ou 3, caractérisé en ce que un revêtement (6) de dossier à faire glisser par dessus les supports de dossier (4); et un soutien lombaire (9) intermédiaire, inséré dans le revêtement de dossier (6), se laissant régler, puis fixer à la hauteur voulue.
  8. Fauteuil avec système mécanique de réglage selon revendication 7, caractérisé en ce que
    a) le soutien lombaire (9) intermédiaire, constitué d'une plaque flexible et d'une languette de fixation (91) ressortant vers le haut;
    b) une poche (61) pratiquée dans le revêtement (6), s'ouvrant en haut pour recevoir le soutien lombaire (9) intermédiaire; tandis que
    c) la languette de fixation (91) qui ressort à travers une fente (62) pratiquée dans le revêtement (6) de dossier et qui peut être fixée de manière amovible au revêtement (6) de dossier, permettant ainsi de maintenir le soutien lombaire (9) intermédiaire à la hauteur choisie.
  9. le revêtement (6) du dossier fixé à son bord inférieur sur la face arrière du longeron transversal (40) au moyen d'éléments de fixation (424) qui traversent le longeron transversal (40) et qui, en même temps, maintiennent la tige piston (81) dans le longeron transversal (40).
  10. Fauteuil avec système mécanique de réglage selon revendication 1 ou 5, caractérisé en ce que des accoudoirs (7) à monter sur le support de siège (2);
    a) chaque accoudoir (7) étant constitué d'un montant vertical (71) surmonté d'un appui-bras horizontal (72)
    b) une partie crantée (710) pratiquée sur le montant (71) constituée d'une série systématique de crans (711) semi-circulaires, superposés;
    c) la partie crantée (710) étant insérée dans l'encoche (220) de la branche verticale (22) du support de siège (2);
    d) un bouton de manoeuvre (70) sous tension d'un ressort (75) logé dans l'alésage (73) de la branche (22) et dont une partie est tangentielle à la partie crantée (710) insérée dans l'encoche, le bouton (70) s'encliquetant ainsi dans le cran qui lui fait face (711).
  11. Fauteuil avec système mécanique de réglage selon revendication 10, caractérisé en ce que
    a) la forme elliptique de la section du montant (71) de l'accoudoir;
    b) les crans (711) situés sur l'une des arêtes principales de l'ellipse; et
    c) le bouton de manoeuvre (70) axial relié à une collerette (74) dont un segment de cercle (741) accroche dans le cran (711) en position.
  12. Fauteuil avec système mécanique de réglage selon revendication 11, caractérisé en ce que le bouton de manoeuvre (70) et la collerette (74) sont reliés entre eux par un alésage (73) dont le passage a un diamètre réduit; d'un côté de l'alésage (73) se trouve le bouton de manoeuvre (70) sous tension d'un ressort (75) tandis que de l'autre côté de l'alésage (73) s'appuie la collerette (74).
EP98946677A 1998-10-21 1998-10-21 Fauteuil avec systeme mecanique de reglage Expired - Lifetime EP1039815B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB1998/001671 WO2000022960A1 (fr) 1998-10-21 1998-10-21 Systeme mecanique de reglage, garniture de dossier et appuis-bras pour fauteuil

Publications (2)

Publication Number Publication Date
EP1039815A1 EP1039815A1 (fr) 2000-10-04
EP1039815B1 true EP1039815B1 (fr) 2003-09-17

Family

ID=11004764

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98946677A Expired - Lifetime EP1039815B1 (fr) 1998-10-21 1998-10-21 Fauteuil avec systeme mecanique de reglage

Country Status (6)

Country Link
US (1) US6557939B1 (fr)
EP (1) EP1039815B1 (fr)
JP (1) JP2002527175A (fr)
AT (1) ATE249772T1 (fr)
DE (1) DE59809667D1 (fr)
WO (1) WO2000022960A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005120291A1 (fr) 2004-06-14 2005-12-22 Vitra Patente Ag Siege dote d'un mecanisme synchrone
DE202010008894U1 (de) 2010-10-26 2010-12-30 Vitra Patente Ag Höhenverstellbare Lumbalstütze für einen Stuhl
WO2016044957A1 (fr) 2014-09-26 2016-03-31 Vitra Patente Ag Chaise avec excursion synchrone réciproque entre le dossier et l'assise

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US6869142B2 (en) 2002-09-12 2005-03-22 Steelcase Development Corporation Seating unit having motion control
US7188900B1 (en) * 2003-11-17 2007-03-13 Hni Technologies Inc. Flexible support for a chair backrest
US20050189807A1 (en) * 2004-02-27 2005-09-01 Norman Christopher J. Chair with functional armrest
ES1057119Y (es) * 2004-03-24 2004-10-01 Metalseat Srl Estructura de sillon de oficina regulable con articulacion para el movimiento sincronico del asiento y del respaldo.
HK1064859A2 (en) * 2004-06-21 2005-01-14 Yu Yeung Tin Synchronous coordinate system of back of chair.
JP4652761B2 (ja) * 2004-09-22 2011-03-16 株式会社岡村製作所 リクライニング椅子
US20080252124A1 (en) * 2007-04-13 2008-10-16 Chen Yung-Hua Apparatus for adjusting the angle of a seat back of an office chair
JP2010227324A (ja) * 2009-03-27 2010-10-14 Oki Electric Ind Co Ltd 椅子
US8596719B2 (en) 2010-10-01 2013-12-03 Permobil Ab Wheelchair backrest assembly
KR20130133763A (ko) * 2010-10-19 2013-12-09 가부시끼가이샤 오까무라세이사꾸쇼 팔걸이 장착 의자
USD721529S1 (en) 2013-06-07 2015-01-27 Steelcase Inc. Handle apparatus
US20150173515A1 (en) * 2013-12-23 2015-06-25 Freedman Seats Ltd Seat
GB2538056B (en) * 2015-04-28 2017-11-29 Gordon Vickers Adam Adjustable chair
IT201800006788A1 (it) * 2018-06-28 2019-12-28 Struttura di sedia
EP4268676A3 (fr) 2019-02-21 2024-02-07 Steelcase Inc. Ensemble de support corporel et procédés d'utilisation et d'assemblage associés
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
TWI723913B (zh) 2020-07-08 2021-04-01 廣力達企業有限公司 高度調整結構

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DE8511034U1 (de) * 1985-04-16 1985-06-05 Steifensand Sitzmöbel- und Tischfabrik Inh.: F. Martin Steifensand, 8501 Wendelstein Sitzmöbel in Form eines Stuhls oder Sessel, insbesondere für Bürozwecke
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005120291A1 (fr) 2004-06-14 2005-12-22 Vitra Patente Ag Siege dote d'un mecanisme synchrone
DE202010008894U1 (de) 2010-10-26 2010-12-30 Vitra Patente Ag Höhenverstellbare Lumbalstütze für einen Stuhl
WO2016044957A1 (fr) 2014-09-26 2016-03-31 Vitra Patente Ag Chaise avec excursion synchrone réciproque entre le dossier et l'assise

Also Published As

Publication number Publication date
WO2000022960A1 (fr) 2000-04-27
DE59809667D1 (de) 2003-10-23
US6557939B1 (en) 2003-05-06
ATE249772T1 (de) 2003-10-15
EP1039815A1 (fr) 2000-10-04
JP2002527175A (ja) 2002-08-27

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