WO2012016342A1 - Siège avec dossier à pré-cintrage réglable - Google Patents

Siège avec dossier à pré-cintrage réglable Download PDF

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Publication number
WO2012016342A1
WO2012016342A1 PCT/CH2011/000175 CH2011000175W WO2012016342A1 WO 2012016342 A1 WO2012016342 A1 WO 2012016342A1 CH 2011000175 W CH2011000175 W CH 2011000175W WO 2012016342 A1 WO2012016342 A1 WO 2012016342A1
Authority
WO
WIPO (PCT)
Prior art keywords
backrest
seat
adjusting
support
link chain
Prior art date
Application number
PCT/CH2011/000175
Other languages
German (de)
English (en)
Inventor
Harald Gerwig
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
Priority to US13/813,360 priority Critical patent/US20130127219A1/en
Priority to EP11745478.5A priority patent/EP2598000B1/fr
Publication of WO2012016342A1 publication Critical patent/WO2012016342A1/fr

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
    • 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
    • A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf 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
    • A47C1/03255—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
    • 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
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
    • 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
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • 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 seat having a backrest adjustable in a pre-curved deformation.
  • the backrest has a backrest support with a link chain of a variety of interconnected linked links.
  • the invention relates to vehicle seats and chairs, including in the seat height adjustable office swivel chairs, wherein the inclination of the backrest follows a synchronous adjustment of the seat tilt.
  • a spring preferably a gas spring, arranged for adjusting the seat height between the chair base and the mechanism resting thereon.
  • the backrest attached to the mechanism assumes a successively pre-curved deformation against the effect of the load by the action of a load from a basically vertical zero position to a maximum rearward tilting position.
  • No. 5,328,245 discloses a backrest with a multiplicity of elements which, in principle, can be displaced horizontally relative to one another and which adapt to the contour of a leaning user in the profile. After adjusting the profile for the individual user, the entirety of the elements can be locked.
  • DE 10 2004 032 765 B4 the problem of adapting the backrest to the back profile of a user is represented by a multiplicity of chambers arranged one above the other and extending transversely across the flexible plastic backrest.
  • CONFIRMATION COPY solves.
  • the chambers can be inflated to varying degrees with air, so that they deform differently flexible to adapt to the individual user back.
  • DE 42 16 159 A1 has a chair for the subject, the backrest synchronously carries the seat at the rearward inclination lowering in the rear area.
  • the backrest is at least twice, namely divided into an upper and a lower part, wherein the parts are hinged together via horizontal axes.
  • Behind the backrest an upwardly projecting support arm is present, from which extends in the pelvic area a hinged cross lever to the backrest and there is also articulated.
  • the backrest is tilted backwards, it is lowered completely and the seat lowers slightly at the front and at the rear at the same time. Due to the displacement between the backrest and the support arm of the cross lever gets more in a horizontal position and thus pushes the lower part of the backrest to the user.
  • the chair according to DE 195 02 485 C2 has a patch on a base base that extends from below the seat to half the height of the backrest.
  • Base and seat are connected by a hinged at its front region on both sides first lever.
  • a bow which can be displaced in a curved groove and which is articulated to the rear area of the seat via a second lever which is articulated to the bow.
  • From the upper end of the bracket extends with bilateral articulation, a third lever to the backrest.
  • the user exerts a load on the front seat area, which lowers with it and pulls the bar upwards via the second lever and consequently also moves the backrest upwards as well as towards the user. If the user shifts his weight to the rear seating area, the seatback is lowered synchronously downward with the lowering seat.
  • the chair according to WO 2007/038 879 A1 has a base placed on the base, a patch on the base mechanism, one on the Mechanics mounted seat and attached to the mechanics backrest.
  • the backrest has a backrest frame, which carries an elastically deformable backrest part with a back plate.
  • the back plate has a back part to which a head attachment is connected.
  • the backrest is pivotable about a first axis of rotation from a basically upright zero position to a rearwardly directed tilt position. The movements of the seat and backrest are synchronized with each other.
  • means for an opposite erection of the shoulder area as a transition zone of the back to the head and head attachment are provided. These means are essentially one each hinged between the back frame and the back plate support on both sides.
  • US Pat. No. 6,986,549 B2 discloses a backrest support, which initially consists of two flexible webs which converge at the upper ends in a V-shape in an S-shape.
  • the webs are subdivided into a plurality of sections connected by film hinges.
  • an opening is provided, and between the opposite openings in each case a pivotable in the vertical plane rigid rib is attached, which keeps the two webs at a distance.
  • Under the seat a plurality of tension cables are clamped, which are each secured by the front track through an opening transverse to the rear track at a next higher rib.
  • the present invention seeks to propose a seat with perfected ergonomic function.
  • the support of shoulder area and head of the user can be improved.
  • the seat can also be equipped with a so-called synchronous mechanism to effect tilt adjustment of the backrest adequate tilt adjustment of the seat, and fulfills the functions of an adjustable height in the office swivel chair.
  • the backrest designed for a seat is adjustable in a pre-curved deformation.
  • the backrest has a backrest support with a link chain of a variety of interconnected linked links.
  • a flexible actuator with a rigid length extends from an upper fixed point, which is provided on one of the links in the upper region of the backrest support, along the backrest support to a lower fixed point.
  • Each link has a dog which engages the link located below.
  • the flexible actuator is embedded in a guide provided on the backrest support, which extends from near the upper fixed point to a lower fixed point upstream space.
  • For adjusting the backrest means for moving the adjusting element in the guide and Vorrümmen the upper fixed point are provided with associated member.
  • the cam of the upper fixed point associated member, which engages in the disposed below, the next member is intended for moving this next member in the precurved position.
  • the other drivers within the link chain each serve to move the coupled member in the precurved position.
  • the backrest is adjustable in inclination, whereby:
  • the backrest has a return spring for adjusting the backrest in the zero position in the absence of stress
  • the actuator has the shape of a leaf spring, an elastic rod or a Bowden cable or a rope.
  • the funds include:
  • a backrest connection which is connected as part of the backrest support on the one hand with the link chain and on the other hand articulated to a present on the mechanism first axis of rotation;
  • the positioning arrangement is a first senor
  • a) is connected to the backrest connection on a connection axis
  • the actuator assembly consists of:
  • connection axis second axle rod which rests in bearings on the backrest connection
  • a receiving unit on which the lower fixed point is located and which has a third axle rod through which a connecting axis extends and which is hinged on both sides to the two bearing elements.
  • each of the two bearing elements each has a second slot in which the positioning of the third axle rod is adjustable;
  • the receiving unit is adjustable in itself, e.g. by extension or
  • the actuating arrangement consists of a second variant:
  • aa) is located at the receiving unit of the lower fixed point
  • the receiving unit has a slot in which an axis extending on the connecting axle axle is rotatably and slidably guided;
  • ac extends from the receiving unit an extension
  • the adjusting unit is fastened to a seat carrier belonging to the seat, preferably articulated on a rear axle arranged on the seat carrier; bb) the adjusting unit has a bouncing element whose position can be varied with an actuator; and
  • bc abuts the bumper element on the extension in order to position the recording unit guided on the axle pin according to the setting on the adjusting unit.
  • the extension rests with a wedge surface on the baffle element and moves when adjusting the backrest in the direction of tilting position on the bounce down.
  • the link chain closes at the top with a head member, in which the upper fixed point is provided and followed by a first chain link followed, the other chain links. At the lower last chain link is followed by a bridge member which is rigidly connected to the backrest connection or integrally formed with the backrest connection.
  • the link chain of the backrest support may be formed up to the shoulder area of the user or, extended in height, to over a head portion.
  • the movable links between the links of the link chain and preferably also between the lower last link and the bridge member are formed by hinges in the form of interlocking elements or of film hinges.
  • the link chain is provided on the side facing away from the seat part with rear stoppers, which block a bending of the link chain and bridge member, facing away from the seat part, to the rear.
  • the link chain can be provided on the side facing the seat part with front stoppers, which block a pre-curved deformation against the load, facing the seat part, beyond a maximum amount defined addition.
  • a) is used when adjusting the backrest between the zero position and the tilting position for synchronous movement of the seat part between a zero tilt and a maximum tilt;
  • b) comprises a fixed in principle fixed to the base frame bottom part, through which extends the fixed in principle first axis of rotation;
  • c) comprises a seat support supporting the seat support through which a second axis of rotation extends, are hinged to the connector on the one hand, on the other hand are hinged to the first axis of rotation; and d) has a third axis of rotation extending through the bottom part, on which the seat carrier is articulated.
  • the backrest connection is attached to the connectors.
  • the backrest connection is formed with two arms, and both arms have at the ends facing the connectors in each case a molded part, which is intended for attachment to the respective associated connector.
  • At least some members of the link chain and optionally also the bridge member are provided with padding supports, which serve to support an existing on the backrest pad.
  • the cushion supports are fastened by means of connecting members on the respective member or extend integrally from the respective member.
  • a) is a one-piece plastic molding
  • b) is with the cushion supports a one-piece plastic molding; or c) is a one-piece plastic molding with the cushion supports and the bridge member; or
  • d) is a one-piece plastic molding with the cushion supports, the bridge member and the backrest connection.
  • the return spring - for adjusting the backrest in the zero position in the absence of stress - is an additional function of the control element and to reinforce the reset function of the control element, a separate tension element can be fixed to the backrest support.
  • the tension element is preferably fixed on the rear side facing away from the user of the backrest support between the head member and the bridge member.
  • the return spring is formed by the hinges between the links and / or by the additional function of the actuating element and / or the separate tension element.
  • a) is provided in the upper region in relation to the lower region of a more intense pre-curved deformation to provide the leaning in the seat user from the shoulder upwards to him a more facing support, which with a differentiated dimensioning and / or different material use within the Link chain is achievable; and b) the lumbar region is formed with a higher resistance to deformation in relation to the rest of the link chain to more firmly support the user in that body region.
  • a spring preferably a gas spring, arranged for adjusting the seat height.
  • the seat is designed as a swivel chair.
  • the base of the adapter assembly is attached to the bottom part of the mechanism or to an extending piston rod of the height gas spring.
  • the backrest support is provided on the side facing the user with a cushion which has a lumbar area and may have a head portion at the top.
  • a height-adjustable support member is provided, and the head portion is slidable in height.
  • Figure 1A - a chair according to the invention in the form of an office swivel chair, with a backrest extended around a head section, in an upright zero position, in a perspective front view;
  • Figure 1 B the chair according to Figure 1A, with the visible backrest support first variant, in a rear perspective view;
  • Figure 1C the chair according to Figure 1A, in side view
  • Figure 1 D the chair according to Figure 1C, without head section
  • the chair according to Figure 1A in maximum tilting position, in a perspective front view
  • Figure 7A the structure according to Figure 4A, in the maximum tilting position, in a perspective front view;
  • FIG. 7B shows the structure according to FIG. 7A, in a perspective rear view from below;
  • Figure 7C the structure according to Figure 7A, as a basic sectional view;
  • Figure 7D the enlarged detail X3 of Figure 7C;
  • FIG. 8B shows the structure according to FIG. 8A, in perspective view from below;
  • FIG. 8C shows the structure according to FIG. 8A, with the base part attached
  • Figure 9A the assembly of mechanics, backrest connection, moldings and actuator assembly in a Malawi.Just ist, in zero position, as a schematic diagram
  • FIG. 9B the assembly according to FIG. 9A, in the maximum tilting position
  • FIG 10A the assembly as shown in FIG 9A, with the actuator assembly in a zwejte "n adjustment, in the zero position;
  • FIG. 10B the assembly according to FIG. 10A, in the maximum tilting position
  • FIG. 11A shows the assembly according to FIG. 9A, with the adjusting arrangement in a third adjustment, in the zero position;
  • FIG. 11B shows the assembly according to FIG. 11A, in the maximum tilting position;
  • FIG. 12B shows the assembly according to FIG. 12A, in the maximum tilting position
  • FIG. 13A shows a backrest support of the second variant, in an upright zero position, in a perspective rear view
  • FIG. 13C shows the structure according to FIG. 13A, in an upright zero position, as a basic sectional view
  • FIG. 14A shows the construction according to FIG. 13B, in maximum tilting position, in a perspective rear view
  • FIG. 14B shows the construction according to FIG. 14A, in maximum tilting position, in a perspective front view
  • Figure 14C the structure of Figure 14A, in maximum tilting position, as a basic sectional view
  • FIG. 15B shows the construction according to FIG. 15A, in perspective view
  • Figure 15D the structure according to Figure 15A, in maximum tilting position, as a basic sectional view
  • FIGS. 1A to 1 D are identical to FIGS. 1A to 1 D
  • the illustrated seat in the form of an office swivel chair consists of the resting on the floor underframe 1, resting thereon mechanism 2, on which the seat part 3 is mounted, and a backrest 4, which includes a head section h in comfortable equipment and provided with a pad 49 is.
  • the undercarriage 1 typically has first a foot 10 - e.g. a 5-star foot - which rests on floor elements 14, preferably rollers.
  • a vice- To adjust the level of the seat part 3 and simultaneous suspension aannangasfeder 12 is inserted vertically in a standpipe 11 centrally in the foot 10, which carries the mechanism 2.
  • the backrest 4 is structured in the backrest support 40 - here in a first variant - the upholstery support 48 and the pad 49 resting thereon.
  • the backrest support 40 comprises a link chain 41, the bridge member 42 attached thereto at the bottom, which is connected to the backrest connection 43, as well as the actuator assembly 45 in a first variant.
  • the backrest connection 43 leads to the mechanism 2 zoom. As a swivel chair, this can be pivoted about a vertical axis of rotation generally by 360 ° and remains in the unloaded state in the zero position, which is enforced by the bias of the spring assembly in the mechanism 2 and limited by a stop in the forward inclination.
  • the zero position is defined by the following positions:
  • the fixed in principle fixed first axis of rotation D1, about the first axis of rotation D1 pivotable second axis of rotation D2 and the principle also fixed third axis of rotation D3 extend. Also visible first are the fourth axis of rotation D4 and the fifth axis of rotation D5, which run through the actuating arrangement 45.
  • FIGS. 2A to 2D are identical to FIGS. 2A to 2D
  • the backrest 4 By the action of a load on the backrest 4 caused by a user, it can be completely moved into the maximally backward tilting position R max .
  • the seat part 3 follows from the previous zero slope So in the maximum seat tilt S max .
  • the backrest 4 engages with the link chain 41 in the backrest support 40 in a deformation that precesses the load, so that the user leaning into the seat is supported with an upright tendency, in particular in his shoulder and head area, and his eyes are kept virtually horizontal.
  • a return spring not shown, is provided which causes the adjustment of the backrest 4 with the backrest support 40 in the zero position Ro in the absence of stress.
  • the embodiments according to Figures 2A-2C are provided with the head portion h, while in the embodiment according to Figure 2D, the link chain 41 is shortened and thus has no head section h.
  • the mechanism 2 is known per se from the patent publications WO 2005/120291 A1 and WO 2007/038879 A1 and consists essentially of the bottom part 20, the seat support 21 and the connectors 22 positioned thereon Bottom part 20 is fixedly placed with its opening 200 on the upper end of the extendable piston rod, arranged in a standpipe 11 height gas spring 12.
  • the two angle-shaped connectors 22 are articulated, which are articulated on the other hand on the second axis of rotation D2 in the bearing recesses 210 in the rear region of the pivotable seat support 21.
  • the bottom part 20 and the seat support 21 are connected to each other on the third axis of rotation D3.
  • an adjusting sleeve 25 in which an actuator rests which, when actuated, permits the adjustment of the so-called seat depth by the upholstered plate 30 mounted on the seat support 21, which forms the underside of the seat 3, from a Lock released and limited sliding is.
  • the usual height adjustment lever 26 is provided to release the piston rod of thedonngasfeder 12 from the lock and thus start the seat part 3.
  • the locking lever 27 is blocking the mechanism 2, so that the backrest 4 can not be moved from the vertical zero position to the tilt position R max.
  • a biasing lever 28 is provided, which serves to adjust the applied to the mechanism 2, spring system, not shown, the force to be applied for the adjustment of the backrest 4.
  • This sequence of figures illustrates the structural design of the complete backrest 4 with the entire backrest support 40 with link chain 41, bridge member 42, backrest connection 43, moldings 44 and actuator assembly 45 in the current zero position Ro.
  • the also a head section h comprehensive link chain 41 starts at the top with a head member 410th which is connected to a first member 411 by means of a hinge 417.
  • This first member 411 is followed by further links 411 linked by hinges 417, wherein the lowermost member 411 is connected via a hinge 417 to the bridge member 42 which is immovable.
  • Each link 411 bears proportionately to an upper and a lower hinge 417 at.
  • the upper hinge 417 is for connection to the member 411 and the head member 410 disposed above the member 411, respectively, and the lower hinge 417 is for connection to the member 411 and the bridge member 42 disposed below the member 411.
  • a hinge 417 is provided of pins in the head member 410 and in the links 411 as well as pin holes in the links 411 and in the bridge member 42nd
  • a front stopper 413 is present, which limits the maximum possible inclined angle position between the links 410,411, 42.
  • the front stoppers 413 that belong to the head member 410 and the subsequent members 411 - namely, those members 410, 411 that move into the pre-curved deformation at the tilting position R max - there is an open gap to move the members 410, 411 toward each other to allow against the impact.
  • the connection members 480 for mounting the cushion supporters 48 are mounted.
  • a rear stopper 414 is arranged, which prevents the rearwardly inclined angular position between the links 410,411, 42, therefore, the rear stopper 414 push each other without a gap.
  • the head member 410 and the links 411 following in chains each have a driver 412, which pulls the downwardly next following member 411 into a prone inclined position from a predefined angle position.
  • the rear stoppers 414 enclose a passage, each with a cover plate 416 internally mounted on the link chain 41, which together form the upper part of the guide 46 for the adjusting element 47.
  • the guide 46 terminates in the head member 410 with an additional cover plate 416 at the upper fixed point 415 as a clamping point for the actuator 47.
  • the guide 46 merges into the elongate bridge member 42 and extends to the guide mouth 462 at the lower end of the bridge member 42nd
  • the actuator element 47 extends from the upper fixed point 415 through the guide 46, passes at the guide mouth 462 in a free space 460 and is taken at the lower fixed point 458 of a receiving unit 459. Within the free space 460, the actuator 47 extends in a curved course as a freely suspended length section a.
  • each of the two arms of the backrest connection 43 is provided at the lower end with a molding 44 having the first retaining contour 441 and the second retaining contour 442 to dock with the associated connector 22. Between the two upwardly directed arms of the backrest connection 43, the lower part of the bridge member 41 is installed.
  • the adjusting arrangement 45 is connected to the backrest connection 43 on the fifth axis of rotation D5.
  • a bearing element 430 is provided near the mold parts 44 on each arm of the backrest connection 43 in order to receive therein a second axle rod 456 through which the fifth axis of rotation D5 passes.
  • the adapter assembly 45 further consists of:
  • a receiving unit 459 at which the lower fixed point 458 is located and which has a third axle rod 457 through which a sixth axis of rotation D6 extends and which is articulated on both sides of the two bearing elements 453.
  • each of the two bearing elements 453 has a second elongated hole 455, in which the positioning of the third axle rod 457 is adjustable.
  • the receiving unit 459 is adjustable in itself, for example, by their extension or shortening in relation to the third Achsstab 457.
  • the front part of the receiving unit 459 - this is the lower anchor point 458 - from the interconnected rear anchor part of the receiving unit 459 - in this puts the third axle rod 457 - be set from a closest assembly to a selectable distance.
  • plate-shaped cushion supports 48 and the pad 49 mounted thereon creates a complete backrest 4, which extends over the lumbar and shoulder area and the extending head portion h.
  • This sequence of figures illustrates the details of the entire backrest support 40 in the maximum tilting position R m ax now occupied by load on the backrest 4.
  • the rigidly interconnected assembly of molded parts 44, backrest connection 43 and bridge member 42 is inclined backwards and has taken along the entire link chain 41. Due to the backward inclination of the bearing elements 430 on the backrest connection 43 has the fifth Rotated axis D5 moves downward and pulled in the first slots 454 on the fourth axis of rotation D4 bearing elements 453 in an inclined position. Starting from the fixed fourth axis of rotation D4, the fifth axis of rotation D5 is now below, in relation to the backrest support 40, before D4 and the sixth axis of rotation D6 above D5.
  • the bearing elements 453 are such that the first slot 454 and the second slot 455 are aligned V-shaped to the ground.
  • the actuator assembly 45 is still in the second Justj réelle, thus is the sixth axis of rotation D6 with the plug-in anchor part of the receiving unit 459 in the second slot 455 in the lowest position and the front part of the receiving unit 459 is set at a distance to the anchor part.
  • the gap 460 has narrowed and the free-floating length a of the actuator 47 shortened. Due to the nature of the flexible actuator 47, the positioning of the guide mouth 462 and lower fixed point 458 and the forced course of the actuator 47 in the guide 46, at least a substantial proportion of the shortening of the length section a along the guide 46 is pushed against the upper fixed point 415. A backward curved deformation between the links 410, 411 is excluded by the abutting rear stops 414. Moreover, the rear positioning of the upper fixed point 415 on the head member 410 on start-up of the control element 47 favors its only forward bending against the load.
  • the driver 412 on the head member 410 causes a likewise forward bending of the next member 411, which in turn pulls through the associated driver 412, the subsequent member 411 forward.
  • the pre-curved deformation continues only on a few next links 411 within the direction of the bridge member 42, ie the links 411 closer to the bridge link 42 in the lumbar region of the user could no longer be detected by the forward bending deflection.
  • With a differentiated dimensioning within the link chain 41 can be in the upper region - substantially over the head portion h - a more intense precurved Deformation, as down in the direction of the bridge member 42 to the Lum- bal Kunststoff the user.
  • the leaning in the seat user experiences from the shoulder upwards a support facing him further.
  • 41 zones of different stiffness can be formed within the link chain, so that, for example, the lumbar area at the seat offers the leaning user a greater resistance to deformation - thus represents harder - and thus supports the user more firmly in this area of the body.
  • this sequence of figures illustrates the assembly of underframe 1, bottom part 20 of the mechanism 2 mounted thereon, connectors 22, backrest connection 43, positioning arrangement 45 and initially lifted seat support 21 (see FIGS. 8A and 8B).
  • the entire backrest support 40 is fastened with its backrest connection 43 to the connectors 22.
  • the mold parts 44 are preferably bolted to the connectors 22, and the first retaining contours 441 of the mold parts 44 engage behind unnamed apertures on the connectors 22 near the second axis of rotation D2.
  • the base 450 of the actuator assembly 45 is seated with its opening 451 on the extending piston rod of the vertical gas spring 12 or could be attached to the bottom part 20.
  • both are connected to one another on the second rotation axis D2 and the third rotation axis D3.
  • the seat support 21 follows a backward inclination of the backrest support 40 in the direction of maximum seat tilt S MAX lowered at the rear. If the seat can be designed neither as a swivel chair nor can be adjusted in the seat height, also attaching the base 450 to another per se fixed part of the seat, for example, on the base 1, into consideration.
  • the following four pairs of figures show the setting arrangement 45 of the first variant in four different adjustments, namely in each case in the zero position RQ of teaching nenarme 40 with associated zero slope So the seat support 21 and in its maximum tilting position R max with the associated maximum seat tilt S max .
  • the sixth axis of rotation D6 with the anchor part of the receiving unit 459 stuck in the second slot 455 is also on the lowest position, the front part of the receiving unit 459 is set at a distance to the anchor part.
  • the gear ratio of the pre-curved deformation of the link chain 41 caused by the maximum tilting position R max therefore remains unchanged for the first adjustment.
  • the maximum tilting position R max / seat tilt S max thus results - in comparison to the first adjustment - a further precurved deformation of the link chain 41.
  • the sixth axis of rotation D6 in the second slot 455 is in the uppermost position, and the front part of the receiving unit 459 is additionally set with distance to the anchor part.
  • the link chain 41 is formed as a one-piece plastic molding, which starts at the top with a head member 410, the links 411 follow each other.
  • the lower last member 411 is adjoined integrally or integrally by a bridge member 42, which is rigidly connected to the backrest connection 43 or may be integrally formed with the backrest connection 43.
  • the link chain 41 is elongated in height and formed with a head section h.
  • the movable links between the links 410, 41, and preferably also between the lowermost last link 411 and the bridge link 42, are formed by hinges 417, eg, film hinges.
  • the upper fixed point 415 is provided by the guide 46 extends to the guide opening 462 on the bridge member 42.
  • rear stoppers 414 are provided, which block a bending of link chain 41 with the transition to the bridge member 42, facing away from the seat part 3, to the rear.
  • the on the link chain 41 on the backrest support 40 of the first variant on the seat part 3 side facing front stopper 413 - to block a vorgekrümmte deformation against the load, ie the seat part 3, to block beyond a maximum extent defined - are on the backrest support 40 second Variant not required.
  • the cushion supports 48 may extend integrally from the respective member 410,411,42.
  • the guide 46 for the longitudinally displaceable embedding of the actuating element 47 - from the upper fixed point 415 through the head member 410, the entire link chain 41 and the bridge member 42 to the guide mouth 462 - is designed and the actuator 47 designed so that when pushed upwards a slip loss is avoided by avoiding the actuator 47.
  • Each member 410,411 in turn has a driver 412 which engages the lower member 411 located thereunder to draw it into the pre-curved deformation. While the dogs 412 in the backrest support 40 of the first variant are formed by interlocking curved contours with an end stop, the followers 412 in the second variant consist of a hook element within an open cut in the next link 411 with increasing precurved deformation of the preceding link 410,411 of this next link 411 pulls forward. Structure and function of the actuator assembly 45 in the first variant are unchanged.
  • the return spring which is necessary for setting the backrest support 40 and the entire backrest 4 in the zero position Ro in the absence of stress, can advantageously by the hinges 417 between the links 411 be formed.
  • an elastomer with its dimensionally stable and elastic property would be suitable and the two-component injection molding method for the production of the backrest carrier 40 efficiently applicable.
  • the actuator 47 causes in the absence of stress the adjustment of backrest support 40 and the entire backrest 4 in the zero position Ro.
  • the restoring action of the actuating element 47 can be reinforced by an additional elastic tension element. This tension element is fixed between the head member 410 and the bridge member 42, preferably on the rear side facing away from the user of the backrest support 40th
  • the head member 410 and at least the nearest following members 411 of the link chain 41 have their pre-curved deformation against the loading action.
  • the adjusting element acting on the head member 410 at the upper fixing point 415 ment 47 has moved with its driver 412 the connected member 411, the driver 412 moves the next following member 411 in the same direction.
  • this sequence continues in the link chain 41 correspondingly far in the direction of the bridge member 42.
  • This sequence of figures relates to the use of a positioning arrangement 45 'of the second variant for the backrest support 40 of the first variant according to FIGS. 1A-2C and 4A-7D or the backrest support 40 of the second variant according to FIGS. 13A-14C.
  • the receiving unit 459 at which the lower fixed point 458 is to anchor the adjusting element 47, is now in one piece and has a slot 51 for receiving a longitudinally slidable 51, but rotationally fixed axle pin 50.
  • the axle 50 extends on the connection axis D5 and rests in the bearing elements 430 on the backrest connection 43.
  • From the receiving element 459 extends to the seat support 21, an extension 52 with a wedge-shaped tip, which slidably attached to a bounce 61 of an adjusting unit 6.
  • the adjusting element 47 projects through the interspace 460 with its section a, penetrates into the lower guide opening 462 of the guide 46 and extends within the guide 46 as far as the upper fixing point 415.
  • the bridge element 42 is still received by the backrest connection 43.
  • the adjusting unit 6 the actuator 62, which is supported on the present on the seat support 21 stop 211 and is formed for example as a screw.
  • the adjusting unit 6 is articulated on the rear axle D7. In the case of movable or elastic formation of the bounce element 61, the articulation on the rear axle D7 would be dispensable and can be replaced by an attachment on the rear of the seat carrier 21.
  • FIGS. 15A to 15C With deeper introduction of the actuator 62 in the bouncing element 61, for example by screwing, the latter is moved to the receiving unit 459 and this thereby shifted on the connection axis D5 with further insertion of the actuating element 47 in the guide 46. This causes a feed on the upper fixed point 415 on the head member 410, so that the link chain 41 is forced into a further pre-curved deformation.
  • the backrest support 40 and the entire backrest 4 are in the zero position Ro, and at the current setting on the actuator 62 of the axle 50 is leftmost in the elongated hole 51 of the receiving unit 459.
  • the seat support 21 takes in the present mechanism 2 with synchronous movement between the backrest 4 and seat part 3 currently the zero slope So a.
  • the backrest connection 43 is lowered, taking the receiving unit 459 along with it.
  • the extension 52 moves down the inclined baffle 61 and thereby pushes the receiving unit 459 on the axle 50 in the direction of the lower guide mouth 462, so that the actuator 47 is advanced in the guide 46 against the upper fixed point 415 and the link chain 41 thus successively in a more intense pre-curved deformation device.
  • the receiving unit 459 moves within the slot 51 via the axle 50 to the left.

Abstract

L'invention concerne un dossier conçu pour un siège, réglable pour permettre un pré-cintrage. Le dossier possède un porte-dossier (40) comportant une chaîne d'éléments (41) constituée d'une multitude d'éléments (410, 411) enchaînés de façon mobile les uns aux autres. Un élément de réglage flexible (47) de longueur rigide s'étend d'un point fixe supérieur (415) prévu sur un des éléments (410, 411), dans la partie supérieure du porte-dossier (40,) le long du porte-dossier (40) jusqu'à un point fixe inférieur. Chaque élément (410, 411) a un entraîneur (412) qui vient en prise avec l'élément (411) disposé en dessous. L'élément de réglage flexible (47) est incorporé dans un guide (46), prévu sur le porte-dossier (40), qui s'étend d'un emplacement à proximité du point fixe supérieur (415) jusqu'à un espace intermédiaire précédant le point fixe inférieur. Des moyens (43, 45) permettant le déplacement de l'élément de réglage (47) dans le guide (46) et un pré-cintrage du point fixe supérieur (415) avec l'élément associé (410, 411) servent au réglage du dossier. L'entraîneur (412) de l'élément (410, 411) appartenant au point fixe supérieur (415), qui vient en prise avec l'élément (411) suivant disposé en dessous est destiné à déplacer cet élément suivant (411) dans la position pré-cintrée. Les autres entraîneurs (412) dans la chaîne d'éléments (41) servent à amener l'élément accouplé (411) respectif dans la position pré-cintrée.
PCT/CH2011/000175 2010-07-31 2011-07-30 Siège avec dossier à pré-cintrage réglable WO2012016342A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/813,360 US20130127219A1 (en) 2010-07-31 2011-07-30 Seat Having A Backrest Which Can Be Adjusted To Form A Precurved Deformation
EP11745478.5A EP2598000B1 (fr) 2010-07-31 2011-07-30 Siège avec dossier à pré-cintrage réglable

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1252/10 2010-07-31
CH01252/10A CH703477A2 (de) 2010-07-31 2010-07-31 Sitz mit einer in eine vorgekrümmte Verformung einstellbaren Rückenlehne.

Publications (1)

Publication Number Publication Date
WO2012016342A1 true WO2012016342A1 (fr) 2012-02-09

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PCT/CH2011/000175 WO2012016342A1 (fr) 2010-07-31 2011-07-30 Siège avec dossier à pré-cintrage réglable

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US (1) US20130127219A1 (fr)
EP (1) EP2598000B1 (fr)
CH (1) CH703477A2 (fr)
WO (1) WO2012016342A1 (fr)

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US9254042B2 (en) 2012-06-22 2016-02-09 Michael V. Halliday Backrest member including an adjustable platform for use with a chair
US8740303B2 (en) * 2012-06-22 2014-06-03 Michael V. Halliday Customizable chair with multipoint adjustment
JP6018871B2 (ja) * 2012-10-10 2016-11-02 株式会社岡村製作所 椅子
DE202013102059U1 (de) * 2013-05-11 2014-08-12 Bock 1 Gmbh & Co. Kg Synchronmechanik
WO2015060471A1 (fr) * 2013-10-23 2015-04-30 김정인 Support de montant dorsal pour chaise
CH711692A2 (de) * 2015-10-28 2017-04-28 Iii Solutions Gmbh Phoronomische Rückenlehne für einen Stuhl oder Sitz.
US10463153B2 (en) 2016-06-09 2019-11-05 Steelcase Inc. Seating arrangement
US11071386B2 (en) * 2016-06-09 2021-07-27 Sava Cvek Seat pivoting mechanism and chair height locking system
US10299602B2 (en) * 2017-03-22 2019-05-28 Yao-Chuan Wu Chair
DE102018109486A1 (de) * 2018-04-20 2019-10-24 Klöber GmbH Lordosenstütze für Sitzmöbel, vorzugsweise für Arbeitsstühle
KR102518806B1 (ko) * 2018-11-26 2023-04-05 현대자동차주식회사 자동차용 다관절 시트백
KR102151679B1 (ko) * 2018-11-30 2020-09-07 한국생산기술연구원 능동적 척추 지지를 위한 의자의 등판 굴곡 장치
IT201900011166A1 (it) * 2019-07-08 2021-01-08 Pro Cord Spa Schienale flessibile per una sedia pieghevole e sedia pieghevole comprendente tale schienale
CN115151167A (zh) * 2020-02-21 2022-10-04 艾特龙有限责任公司 椅子
US11389350B2 (en) 2020-09-29 2022-07-19 Permobil, Inc. Adjustable back support

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US5328245A (en) 1992-10-30 1994-07-12 Thomas J. Marks Chair having adjustable back support
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EP2039271A1 (fr) * 2007-09-18 2009-03-25 Shunjie Lu Support dorsal d'une chaise
WO2011006502A1 (fr) * 2009-07-16 2011-01-20 Vermund Larsen A/S Support réglable

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EP0151816A2 (fr) * 1984-01-13 1985-08-21 Poltrona Frau S.p.A. Dispositif pour régler et positionner une chaise
DE3604534A1 (de) 1986-02-13 1987-08-20 Hartmut Lohmeyer Sitzmoebel mit einem sitz und einer in sich elastisch nachgebenden rueckenlehne
DE4216159A1 (de) 1992-05-15 1993-11-18 Kloeber Gmbh Arbeitsstuhl mit Rückenlehne und Rücken-Becken Synchronmechanik
US5328245A (en) 1992-10-30 1994-07-12 Thomas J. Marks Chair having adjustable back support
DE19502485C2 (de) 1995-01-27 1999-09-16 Fus Rainer Stuhl
DE29917813U1 (de) * 1999-10-08 2001-02-22 Westmont Technik Gmbh & Co Kg Verstellvorrichtung für Betten, Matratzen, Sessel u.dgl.
US6986549B2 (en) 2003-03-19 2006-01-17 Leif Kniese Seating element
WO2005120291A1 (fr) 2004-06-14 2005-12-22 Vitra Patente Ag Siege dote d'un mecanisme synchrone
DE102004032765B4 (de) 2004-07-06 2006-10-05 Volker Wilhelm Eysing Bürostuhl mit flexibler Lehne
WO2007038879A1 (fr) 2005-10-03 2007-04-12 Vitra Patente Ag Siege
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EP2039271A1 (fr) * 2007-09-18 2009-03-25 Shunjie Lu Support dorsal d'une chaise
WO2011006502A1 (fr) * 2009-07-16 2011-01-20 Vermund Larsen A/S Support réglable

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Publication number Priority date Publication date Assignee Title
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EP2598000A1 (fr) 2013-06-05
CH703477A2 (de) 2012-01-31
EP2598000B1 (fr) 2014-04-23
US20130127219A1 (en) 2013-05-23

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