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WO2018197915A1 - Siège - Google Patents

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Publication number
WO2018197915A1
WO2018197915A1 PCT/IB2017/000486 IB2017000486W WO2018197915A1 WO 2018197915 A1 WO2018197915 A1 WO 2018197915A1 IB 2017000486 W IB2017000486 W IB 2017000486W WO 2018197915 A1 WO2018197915 A1 WO 2018197915A1
Authority
WO
WIPO (PCT)
Prior art keywords
backrest
structural elements
profiles
structural element
profile
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.)
Ceased
Application number
PCT/IB2017/000486
Other languages
German (de)
English (en)
Inventor
Jürgen Zimmermann
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.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/IB2017/000486 priority Critical patent/WO2018197915A1/fr
Publication of WO2018197915A1 publication Critical patent/WO2018197915A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/405—Supports for the head or the back for the back with double backrests
    • 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—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • 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—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/46—Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • A47C7/462—Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means

Definitions

  • the invention is directed to a chair with at least one seat and at least one backrest, wherein two or more elongate profiles, preferably each with round outer cross-sections, are attached to a supporting part in the region of the seat, which within the surface of the backrest parallel to each other, however without a direct rigid connection with each other up to about the upper edge of the backrest, and wherein the backrest is divided vertically into several backrest segments, preferably in three or more backrest segments, each having the shape of a strip of horizontal longitudinal extent, each having an inner , supporting, at least partially planar structural element for supporting an attached or this encompassing upholstery of a soft material and / or a fabric, wherein an inner, at least partially flat structural element for each profile durc housing recess, the inside of the profile in question wholly or at least partially surrounds or surrounds, wherein between the inside of the recess in the structural element and the encompassed or enclosed by this profile an articulated connection is created, which rotation of the respective backrest segment about the longitudinal axis of Profils
  • Seating furniture with a seat and a back rest serve the primary purpose of enabling a person to sit fatigue-free by supporting the back of the seated person.
  • Many previously known backrests have to an inner, frame-shaped, rigid frame that can absorb and divert the forces to be supported.
  • such a rigid frame does not allow lateral torsional movements of the upper body
  • trigger points also referred to as myogelosis
  • myogelosis which can be triggered by a long-lasting stress load such as.
  • a one-sided sitting posture is therefore not achieved with such an arrangement.
  • the mobility of a structural element which can pivot on the one hand in a horizontal plane about the longitudinal axis of a supporting profile, on the other hand tilt about at least one perpendicular to the longitudinal axis of this supporting profile axis direction, namely preferably about an axis direction transverse to the respective seat direction and / or order an axis direction within the surface of the relevant, at least partially flat structural element, modified such that a coupling is provided in the region of the ends between adjacent structural elements.
  • This coupling causes the structural elements while as a whole are as mobile as without such a terminal coupling;
  • the mobility of a structural element is influenced not only by the elastic properties of just that particular structural element itself, but also by the position and orientation of the respective adjacent structural elements, which in turn depend on the position and orientation of the first-mentioned structural element.
  • the coupling between adjacent structural elements in the region of the periphery should be designed so that it can be loaded under pressure.
  • a coupling element is able to ensure a minimum distance between adjacent structural elements on the same side of the backrest, which a pure tension element can not.
  • one or each one connecting strip is provided in the region of one or both side edges of the backrest, which connects the free, lateral end faces of two, several or all planar structural elements.
  • Such connecting strips lead the structural elements, which tend away from the central support profiles depending on the torsional movement in different directions, together again at their ends to form a common edge, so that the principle of a uniform, flat backrest is not abandoned, but also finds its expression in the area of the lateral periphery , However, this not only has an optical effect to the outside, but also a structural effect to the inside, by the structural elements in their behavior are aligned.
  • the connecting strip (s) consists of a flexible and / or elastically deformable material (s). Accordingly, such a connection bar sets deformation only to a limited extent. Rather, it is able to adapt to the respective requirements. Ideal is a condition, wherein the resistance of such a bar increases with decreasing bending radius, so that sharp creases are straightened and adjusts overall a relatively smooth course of such a profile.
  • the structural elements in the region of their peripheral end faces in the vertical direction can be made flexible, so that they can take such a predetermined path from an end connection bar and thus also in the region of its peripheral edges a the respective requirement corresponding deformation, in particular a corresponding deflection in the vertical direction, experienced.
  • organic materials have proven to be particularly suitable for the connection strips, especially elastomers, rubber, rubber or the like flexible Kustscher.
  • connection bar since a flexibility within a vertical, approximately in the seat direction plane is important, while a flexibility transversely to the seat direction is less required because the width of the back barely changes during a torsional movement, such flexibility of a connection bar can also be achieved by design measures or be improved, for example.
  • the cross section of a connecting bar is designed so that it favors certain bends. This can be achieved, on the one hand, in that the extent of a connecting strip in a direction perpendicular to the surface of the backrest is relatively small, preferably not double-layered in this direction, but has only one single layer;
  • connecting bars according to the invention may also preferably be made of an elastic material which, after a temporary deformation, returns to its original shape.
  • connection strips support the elastic restoring force of the structural elements and contribute to a Backrest according to the invention automatically returns to its original position when a person gets up.
  • the elasticity may well be set such that it requires a force of one or more kilograms to twist or otherwise deform the backrest;
  • connection strip (s) can (can) be made of plastic, metal or wood.
  • materials such as metal or wood are to be considered primarily because of their aesthetics, since their elasticity is relatively high. Therefore, if necessary, a soft wood should be used; In the case of metal, hollow sections may be preferred whose elasticity is greater than that of solid sections.
  • the invention can be further developed such that the connecting strip (s) is (are) slidably fixed on at least one planar structural element in its longitudinal direction.
  • the connection bars can be fixed to the structural elements also immovable. However, if their extensibility in their longitudinal direction is limited, it may be advantageous to provide no rigid connection here.
  • connection strip has two possibilities to adapt to this change in length - by stretching in the longitudinal direction on the one hand and / or by a displacement of the connection bar against some or all Strukturelmenten other hand.
  • the length extensibility can as Material property resulting from the above-described elasticity, for which, however, are particularly soft, rubbery materials to be preferred.
  • a relative movement between the connecting strip and individual structural elements above all requires kosntruktive measures, namely by the connecting bar is not rigidly connected to the respective structural elements, but only to those guided so that they can still move in their longitudinal direction relative to the structural elements. So that the connection strip can not be detached from the structural elements in such a displacement, the cross sections of the interlocking guide elements can have undercuts, for example in the form of a so-called dovetail connection.
  • connection can be realized, for example, in that the connecting strip (s) have at least one spring extending in their longitudinal direction, with which they are (approximately) inserted in approximately vertical grooves on the lateral end faces of the planar structural elements.
  • Such a tongue and groove connection is able to transmit in particular forces perpendicular to the surface of the backrest. On the other hand, it allows a relative displacement of the spring in the groove.
  • the connecting strip (s) have at least one groove running in its longitudinal direction, with which it is (are) pushed onto the lateral end faces of the planar structural elements or on spring-like extensions thereof.
  • the two groove flanks of the connecting strip form a double layer, which can affect the flexibility of the connecting strip, similar to the top and bottom of an i-profile.
  • the width of the groove in the region of the free longitudinal edges of the groove flanks may be smaller than at least one point in the interior of the groove. This corresponds to the geometry of an undercut, with the result that, although the connecting strip is displaceable in its longitudinal direction, it can not be detached from the structural elements transversely thereto.
  • a connecting strip with the front side of at least one planar structural element can also be immovably connected, for example by screw (s), and / or notches or elevations are provided within a groove of the connecting bar at the bottom of the groove, which in counterparts on a front side of a planar structural element intervention.
  • thereby the connection between the backrest and a connecting bar according to the invention completely insoluble, at least these parts can not unintentionally separate from each other.
  • the invention also allows a design to the effect that a connecting strip is immovably connected to the end face of a single, preferably the uppermost, planar structural element, with the end faces of the other planar structural elements, however, displaceable in its longitudinal direction.
  • a connecting strip is immovably connected to the end face of a single, preferably the uppermost, planar structural element, with the end faces of the other planar structural elements, however, displaceable in its longitudinal direction.
  • the upper end of the connecting bar always remains in common alignment with the upper edge of the uppermost structural element, giving the backrest a uniform aesthetics;
  • the displaceability relative to the other structural elements allows a low-resistance adaptation to different torsion angle, resulting in the high flexibility of the backrest of a chair according to the invention.
  • the invention further provides that the planar structural elements in the region of the elongated, central support profiles in the vertical direction are immovable, for example.
  • a spacer inserted between two adjacent backrest segments can prevent the individual backrest segments from being frictionally pushed up or even over one another and thus lose their movement function. If neighboring backrest segments according to the invention do not touch each other directly, then a maximum mobility results. In particular, backrest segments arranged directly one above another can tilt independently of one another in different directions.
  • a spacer inserted between two adjacent backrest segments has the shape of a plate or a cuboid or a body with a similar geometry, which is supported in the region of two adjacent backrest segments.
  • a support can be provided on the backrest segments or their structural elements, for example.
  • Hook-shaped projections which engage around with their hook nose in each case the upper or lower edge of a spacer element.
  • two such hooking elements are preferably located on each or at least one inner or middle structural element, one in the region of the upper edge, of which Hook nose pointing upwards, and one in the area of the lower edge, whose hook nose points downwards.
  • Such Einhakemia could also be developed such that the hooked noses have the shape of a circumferential edge, which rotates behind it, trough or trough-shaped depression, while the spacer body engages in the recess in question.
  • An inventive, between at least two adjacent Lehnensegmenten arranged spacer can also be transferred another function, namely a possibly height adjustable support of directly auflastenden backrest segment on the embraced support profile, since the Lehnensegmente invention are hardly able because of their tilting possibility, frictionally engaged in the hold captive support profiles and thus support itself to the support profile.
  • At least one means for locking such a spacer between two vertically adjacent backrest segments on the (the) profile (s) is provided in one or more positions, so that a seated person, the height of the spacer body and so that individual backrest segments can vary and adapt to their own ergonomic conditions.
  • a spacer body can be provided with an adjusting screw, which can be screwed therethrough and then presses on the gripped support profile and can effect a clamping or frictional locking there. This can be done at any position along a supporting profile; Special design measures on a support profile are not required.
  • one or more notches may be attached to at least one support profile, in which sprung elements of a Engage adjustment mechanism.
  • a once-divided position is reliably maintained, while the user can adjust the backrest segments as needed without much effort up or down.
  • Similar effects can be achieved by perforations of the support profiles, in particular in the form of bores, wherein at least one movable element should be provided on a spacer body between two backrest segments or these supporting structural elements for engagement or snapping into a notch or opening of a profile.
  • This movable element preferably obtains its characteristic function by the force of at least one spring element, which is biased in a direction for engagement, in particular engagement in a notch or opening or perforation of a support profile and thus ensures engagement of the bewegelichen element.
  • a spacer body and a support profile may optionally serve a contact surface in the region of a notch or recess, so that a biased latching element can liberate itself with sufficient external force;
  • this can also be a manual actuator for lifting the movable element from the respective notch or opening or bore of a support profile against the force of the prestressed spring element can be provided so that a seated person by simply manually pushing the actuating element the respective spacer body and thus the on it load-bearing back sections can move up or down until the spring element then snaps back into the next, intended notch, opening, hole or recess.
  • one or more of the planar structural elements in the region of the elongated, central support profiles are displaceable in the vertical direction, for example, in the region of the profiles neither have a direct mutual contact nor are supported on each other by inserting a spacer between immediately adjacent flat structural elements, and / or are neither clamped directly to the profiles nor fixed to the profiles in any other direct manner, and / or are not braced on the profiles or otherwise attached to the profiles Experiencing profiles fixed support elements.
  • Such structural elements are able to adjust their vertical position according to requirements, for example, derived from the position of the lateral connection bars.
  • a connection strip can be immovably connected to one end face of all planar structural elements.
  • connection bar (s) serves as a rigid connection (s) of all structural elements with each other. If such a connecting strip is sufficiently stable in its longitudinal direction, it can specify the height or the spacing between adjacent structural elements in the case of lateral torsional movements, so that then optionally a connection of these structural elements with the elongated, central supporting profiles can be dispensable, at least up to one structural element , which then determines the height of the backrest in total.
  • two connecting strips are connected to one another in the region of their upper edges, for example by a horizontal connecting element arranged above the uppermost, planar structural element.
  • a horizontal connecting element arranged above the uppermost, planar structural element.
  • Such an elongate connecting element with a horizontal longitudinal extent can serve primarily as an upper closing element in order to bring together the two side edges of the backrest at the upper edge thereof.
  • Such a connecting element between the two connecting strips may have the shape of a connecting spar which is connected to the central supporting profiles and / or to the uppermost, planar structural element and / or to the connecting bars is fixed immovably.
  • such a horizontal connecting element undergoes vertical alignment with respect to the frame of the backrest; a similar function can fulfill a connection with the uppermost structural element, provided that in turn is connected to the central support profiles in the vertical direction immovably. Its vertical position can then inform the horizontal connecting element the lateral connecting bars, if it is also fixed there immovable. In that case, it would then be possible to couple such a fixed connection strip with all structural elements in a displaceable manner.
  • the load-bearing structural elements are padded on their front sides with a soft material and / or (foamed).
  • PUR foams are usually used for this purpose, and particular seating comfort is still achieved through the use of what are known as molded foams, as used in mattresses or pillows. These foams adapt to the individual body shape and remain briefly in the embossed form and relax only slowly.
  • Other foams are foams based on PP-E foam, PE, polystyrene, PET or biopolymers.
  • all backrest segments are coated at least on their front sides together with a cover made of a (textile) fabric, a leather (imitation) or a (plastic) film.
  • a cover fabric for a single backrest segment may be dispensable; however, such could be advantageous for maintaining padding at the location assigned to it in the region of a seatback segment.
  • the invention further provides that between the two connecting strips at least partially over several or all planar support elements extending, common reference is stretched.
  • a cover may consist of different sheet materials, mainly of a textile fabric. Its primary purpose is, inter alia, to connect the backrest, which is subdivided into different backrest segments, each having a structural element, to form an optical unit.
  • such a cover can also take over a protective task, for example by protecting the underlying bent mechanism from contamination and / or other particles and thus ensures a long-lasting functionality of the backrest mechanism.
  • the common cover stretched between the connecting strips has a flat shape and extends only over the front side of the backrest.
  • the rear remains accessible, for example.
  • the cover should be fixed along the connecting strips or along other frame members, for example, clamped. If necessary, it can be guided around the lateral connection strips and clamped on the rear side thereof, or it can be clamped on the front side of the backrest between the connection strips and structural elements.
  • the tensioned between the connecting strips common reference has a banderoleförmige shape and surrounds the backrest at the front and rear.
  • an additional anchoring for example. Clamping, not necessary.
  • the cover is elastic and made in the horizontal circumferential direction with a certain undersize, it can be taut under elastic expansion around the backrest and thereby obtains a natural way a sufficient grip.
  • additional fixations are conceivable. This embodiment benefits from a development of the invention, according to which any existing side armrests are not anchored to the structural elements, but on the pedestal of the chair below the seat, because if necessary, a reference can be striped from above the entire backrest.
  • an elastic material can be selected and in a horizontal circumferential direction (too) just dimensioned blank, so that adjusts an elastic tightening in the circumferential direction, which acts fixing.
  • a further fixation due to the above completely or partially closed blank, which rests on the upper edge of the frame of the backrest, in particular on the upper edge of the uppermost structural element or an upper-side connecting profile, thereby reliably preventing the cover from slipping off.
  • At least one backrest segment in particular its supporting structural element, has on its front side a curvature transverse to its longitudinal direction, in particular a concave curvature on the front side in the horizontal direction.
  • This can be a simple curvature act, wherein the ends of the backrest segments are curved slightly forward toward the seat.
  • a backward-receding surface region could be provided which accommodates the vertebrae of a seated person for spinous processes which possibly protrude backwards.
  • a horizontally at least partially concave curvature of the sheet-like structural elements at the front transverse to the sitting direction has the advantage that the stretched between the connecting strips, common reference spans in external forces free state with a distance over the front sides of the sheet-like structural elements away and only is applied or pressed against the flat structural elements by the back of a seated person.
  • Such, under tension reference applies when leaning a person over the entire surface of the back and is thus able to initiate compressive forces over the entire surface and evenly and without local pressure peaks on the seated person, which is perceived in an optimal way as pleasant.
  • a lumbar pad or cushion is arranged on one or more backrest segments, whereby the user receives a seat support, in particular in the area of the lumbar vertebra.
  • the invention can be further developed such that on the two connecting strips and / or on a flat support member and / or on the vertical support profiles a lordosis on the front of the backrest is provided parallel to the surface thereof, and preferably approximately parallel to the longitudinal direction of the profiles and / or the connecting strips slidably guided and / or arranged displaceable.
  • a lordosis serves to support the lumbar vertebrae of a seated person and should therefore, on the one hand, extend over the middle region of the backrest and, on the other hand, be adjustable in height to the respective person.
  • the location of their anchoring can be selected between the lateral connecting strips, a flat support element and / or the central support profiles.
  • the lordosis may be provided with one or more own guides whose longitudinal axes should be oriented approximately vertically.
  • the invention recommends to arrange two such guides together with the necessary guide elements in lateral areas of the lordosis, especially once left and once right of the center.
  • the height-side guide elements of such guides can be displaceable in height to extend the height adjustment, for example. In the event that both adults, adolescents and Children can sit on a seating. This adjustability is particularly simple if the leaning-side anchoring or guiding elements of the lumbar support are fixed laterally to a structural or supporting element of a backrest segment. Then, a displaceability to an adjacent structural or supporting element of another backrest segment can be provided without having to disassemble the backrest completely.
  • the leaning-side anchoring or guiding elements of the lumbar are fixed independently of the lateral connecting strips on a structural or support element, for example. Plugged or screwed, or together with the lateral connection bars, for example, by the same connection means are used , For example, the same screws or plug-in elements.
  • An inventive chair can of course have armrests.
  • the invention recommends that lateral armrests are not arranged on the backrest, but are supported by support elements on a supporting element in the region of the seat. As stated above, this makes it easier to slip over a cover.
  • a torsional ability of the armrests in the event of a deformation of the backrest is not required, since a seated person is quite able to adapt their arms a changed seating position.
  • it could be advantageous if the tops of the armrests are relatively flat, so that an arm can be placed in different directions on it.
  • a design optimization undergoes the invention in that the lateral armrests are supported on the same supporting element in the region of the seat, on which also the central support profiles for the backrest are fixed. It may be a supporting part immediately below the seat, on the back of which central supporting profiles are anchored, while on the sides each one armrest can be fixed and / or on its upper side the actual seat.
  • lateral armrests are arranged on one or more backrest segments, in particular if the cover spans only the front side of the backrest and anchored in the region of the lateral connecting strips, for example is clamped.
  • the armrests can be fixed to the rear region of the supporting structural element of a backrest segment. You can, for example, attach to a lower segment - for example, at the free ends - and possibly initially run upwards, for example, obliquely.
  • the armrests can also start on an upper backrest segment; the farther up they set, the more they will swing with a body rotation of the person concerned. Because the shoulder area of a person pivots so with a rotation of the upper body with and thus the arms, so that a lateral displacement of the armrests is quite desired.
  • backrest segments eg. At the top - lateral earrests to support the head laterally; these could also be anchored at a front only reference to the back of a backrest segment.
  • Such earrests can also - for example by means of the backrest at the upper edge cross-bracket - be offset relative to the side edge of the backrest inwards or even be adjustable in the lateral direction.
  • a headrest which may be formed height adjustable if necessary.
  • the invention recommends to provide on the underside of the seating elements an example. Cuboid element with multifunctional connections for the various attachments, ie in particular the central support beams on the one hand and the side armrests on the other.
  • This anchoring element should, on the other hand, be located above a rotary and / or lifting mechanism, so that the seat, backrest and armrests always occupy the same stroke position and rotational position and thus do not move relative to one another, apart from the deformability of the backrest as a result of twisting and bending.
  • a recliner adjustment for the backrest may be located below such an anchoring part, so that when changing the inclination of the backrest and the armrests and the seat follow.
  • At least one support profile has the shape of a tube, in particular the shape of a tube made of metal.
  • a pipe is not only an ideal compromise between a high stability on the one hand and the lowest possible weight on the other hand. Rather, the reduction of the total cross-section increases the elastic flexibility of a support profile and thereby improves the ergonomic function of a seat according to the invention.
  • Tubes made of metal have proved to be particularly suitable, because they are sufficiently flexible with high dimensional stability and low weight. But other materials, possibly also as solid profile, can be used, for example, plastics, wood, bamboo or composite materials, carbon, etc.
  • the central support profiles each have a round outer cross-section, so that between the profiles and those which completely or partially surround recesses a relative Rotational mobility is given, as a result, the backrest segments can change their position in the room if necessary, which is particularly important for torsional movements in the upper body of a seated person.
  • the central support profiles run parallel to each other. Preferably, they are connected to each other neither at the level of the backrest segments nor between them, at least not by a rigid connection, so that they can bend to a certain extent, in particular also in different ways, which is important for the above-described torsional movements of a seated person.
  • the backrest segments can also be veschoben in the vertical direction, for example, be pushed for mounting from the upper end of the profiles ago.
  • a lateral spacing should be provided which is equal to or less than half the width of the backrest, preferably equal to or smaller than one third of the width of the backrest, in particular equal to or smaller than a quarter of the width of the backrest Distance is, the stronger is the inclination of the backrest segments in an opposite bending of the two profiles.
  • a particular has proven a lateral distance between about 5 cm and 15 cm, preferably between 7 cm and 13 cm.
  • the two support profiles are not or at least not rigidly connected to one another in the region of their upper ends, such bending mobility increases along the profiles from bottom to top, in particular progressively.
  • This allows a maximum degree of freedom for each backrest segment, in particular for rotational movements about a vertical axis as well as for tilting movements about a horizontal axis in the longitudinal direction of the relevant backrest segment.
  • An arrangement according to the invention can be completed by a disc-shaped part for the area-wise, upper-side cover of the uppermost backrest segment, with two laterally staggered depressions or recesses for inserting or passing through one support profile each.
  • the support profiles may optionally be connected to each other, and / or be connected to a supporting element of the chair frame.
  • a supporting element is preferably an element arranged directly on a rotary or chair frame, preferably made of steel or another metal.
  • An inner load-bearing structure in the form of an inner, supporting structural element, in particular in the region of at least one continuous channel opening, ensures that the individual backrest segments, on the one hand, remain flexible in order to adapt to the movements of the user On the other hand, but also ensure a sufficiently stable connection of the backrest segments with anchored to the chair frame and from there towering profiles.
  • the person can thus also boldly seated in the seat according to the invention, without the individual segments of the back, for example, unintentionally fold backwards or to the side.
  • At least one supporting structural element is located within the respective Lehnensegementes and on the one hand should be designed so that it supports the resilient properties of the backrest segment, but on the other hand also gives the backrest segment sufficient strength.
  • the different backrest segments can be equal to each other, which is conducive to a uniform overlay, but not mandatory. On the one hand, they may differ from one another ergonomically, but on the other hand, they may also be aesthetically pleasing. For example, a backrest segment with a lordosis in the lower region of the backrest, one or more backrest segments with armrests, a backrest segment with a headrest, etc. Furthermore, the backrest segments could be in their flexibility and / or Upholstery differ, for example, by serving as a headrest backrest segment could be made softer and cuddly than the others. For example, variable widths and / or lengths of individual backrest segments could be considered as the aesthetic face.
  • the axis perpendicular to the longitudinal axis of a support profile about which an inner structural element is tilted guided by the support profiles, in turn, at least within a penetrated by the respective support profile surface about the support profile is pivotable, so that even in the case torsion movements of a person sitting on the chair around their spine, the backrest segment guided by the inner structural element on the support profiles in its Adjust the orientation of the adjacent back part and this can nestle optimally.
  • An articulated connection can be realized, in particular, in that the contact area between the inside of the recess in the structural element and the support profile encompassed or enclosed by it is at most annularly closed or at least partially arched or ring-shaped or arc-shaped via an extension parallel to the longitudinal axis of the gripped support profile is, which is smaller than the length of the recess, preferably smaller than the outer circumference of the support profile, in particular smaller than the diameter of the embraced support profile.
  • annular support elements instead of the spacer elements described above, it would also be conceivable to anchor, for example, annular support elements on the support profiles, for example. Lock by means of pressing against the profiles screws on which then ever a backrest segment can be supported.
  • annular (support) element with a dome-shaped or spherical surface on which then a complementary, hollow spherical area on the inside of the support profile encompassing recess mounted like a ball joint is.
  • Such a (support) element or a (ball) joint element could be anchored to the respective support profile, for example.
  • the present invention preferred support profiles may be formed as tubes, in particular as of the upper edge of the backrest at least up to the lower edge of continuous tubes.
  • the support profiles should not be connected at their upper ends or at least not rigidly.
  • the lateral distance between the two support profiles should be less than 20 cm, especially less than 15 cm.
  • the support profiles are thereby arranged in the region of the spine of a seated person.
  • the distance between the two support profiles is greater than 2 cm, preferably greater than 4 cm. As a result, sufficient lateral stability of the backrest is achieved.
  • a further aspect is that the recesses in a structural element for a backrest segment need not have an annular, completely closed inside. It would also be conceivable that the respective recess has a longitudinal slot, so that the mobility is further increased, especially if the Sturkturelement should also be made of an at least limited flexible material such as. Plastic, so that such a slot under certain requirements could widen. As a result, it would be possible, for example, to dimension the inner cross-section of such a recess in such a way that it is slightly smaller than the one in a force-free state External cross-section of the relevant profile.
  • the invention can be further developed to the effect that an inner structural element for fully or at least partially encompassing or enclosing a support profile each having a recess whose light cross-section is smaller at least one point between its upper and lower mouth than in the region of an orifice itself facilitates assembly, because when inserting a backrest segment on the towering in the backrest profile of the chair frame, the threading of the profiles is facilitated in the expanded at their mouths recesses.
  • the invention recommends that the course of the inside of a recess in an inner structural element for completely or at least partially encompassing or enclosing a supporting profile along its longitudinal direction has a point where its clear cross-section is minimal.
  • Such a shape having a narrow cross-section enlarging from a narrowing in a central area in both directions allows a tilting movement about an axis direction in the vicinity of the narrowing.
  • a continuous recess should be equal to or smaller than the cross-section of a profile penetrating the inner structural element, so that the latter is closely embraced by the supporting structural element and thus ensures good guidance of the profiles on the profiles when tilting a backrest segment remains.
  • a recess in an inner structural element of a backrest segment can constantly expand from the location of a tilting axis or a tapered or minimal, clear cross section in the direction of an upper and / or lower-side opening of the recess, in particular along a cone or conical surface. This corresponds to the fact that with a tilting with increasing distance from the tilting axis, the degree of adjustment always increases and there requires an increased space.
  • the openings of the two conical or conical surfaces should point in different directions, based on the longitudinal axis of a gripped support profile, depending on an extension of an inner constriction to the outer orifices out, in particular with an opening angle of a conical or conical surface, the same or is greater than 1 °, preferably equal to or greater than 2 °, in particular equal to or greater than 4 °, and / or with an opening angle of a conical or conical surface which is equal to or less than 15 °, preferably equal to or less than 10 ° , in particular equal to or less than 7 °.
  • the opening angle of the two conical or conical surfaces can be the same size.
  • the invention is so versatile that it can find application in almost all seating. It can be used, for example, in office seating furniture, in particular as a (conference) swivel chair with or without castors, but also in the private sector in chairs and armchairs of all kinds.
  • the invention is suitable for chairs with a central base or with three, four, five or more feet, for cantilever chairs or lounge chairs, also for child seat furniture, also in the school area.
  • the seating furniture according to the invention, in particular the novel backrest is also suitable for wheelchairs. Especially with a person who can move only limited, such a cooperation helps the back, even with the smallest movements to prevent sitting through.
  • a somewhat similar principle is used in decubitus mattresses, whereby the pressure or load points are constantly varied from the outside.
  • plastic backrest segments may also be used, which may not be upholstered, so that they are suitable for outdoor use. These can optionally be combined with an inner structural element or integrated into a single part. Even a reference could be dispensed with in this case.
  • Figure 1 is an inventive seating in the form of an office swivel chair in a front view.
  • FIG. 2 the chair of Figure 1 in a rear view.
  • FIG. 3 shows the seating furniture from FIGS. 1 and 2 in a side view
  • FIG. 6 is a perspective view of the chair with attached backrest obliquely from behind and partially broken off; such as
  • Fig. 1 shows an example of an inventive seating 1 an office swivel chair comprising on the one hand a bogie 2 with a plurality of, from a central, vertical support 3 star-shaped cantilevered arms 4, each with a steerable furniture roll 5 in the region of the free end, on the other hand comprising a preferably adjustable in height and / or rotatable about a vertical axis and / or about a horizontal, transversely to the sitting direction extending axis tiltable arranged on the vertical support 3 seat 6, and also comprising a backrest 7 according to the invention.
  • this opens at its top in an assembly or support means 18 for (screw) attachment or to support the seat surface.
  • mounting or support means 18 on the one hand preferably below the seat surface 6, and on the other hand preferably above the lifting, rotating and / or tilting mechanism 17, and racks 19 for lateral armrests 20 may be attached.
  • This may be about L-shaped curved bracket, which with one of its legs on the underside of the seat surface 6 or on one side of the mounting or support means 18 so can be fixed so that they extend below the seat 6 to the side edge 21 and then beyond the same are then bent upwards and then carry the actual, preferably horizontal armrest 20 at the upper end of this second leg.
  • the backrest 7 may be attached to that mounting or support device 18, preferably below the seat surface 6 on the one hand, and also preferably attached to or above the lifting, turning and / or tilting mechanism 17th This could be done by means of screws;
  • a rearward, open to the rear insertion opening can be provided, in which support sections 8 of the backrest 7 can be inserted or inserted.
  • a lock can be made, for example.
  • the support profiles 8 may be provided in its lower portion with a bend 22, so that the support members 8 each case have an L-shaped configuration with a lower, approximately horizontal leg for anchoring to the mounting or support means 18, in particular by Inserting into local recesses, and with an upper, approximately vertical leg as a supporting element of the backrest. 7
  • the invention recommends carrying out the support profiles 8 as tubes, preferably made of metal.
  • the outer cross section of the support profiles 8 should be round.
  • These support profiles 8 should preferably extend with unchanged outer cross-section and with constant, mutual distance, upwards approximately to the upper edge 9 of the backrest 7 or may end just below. They can do the same Follow bending curve. This course should in each case lie in a plane that is spanned by the two legs on either side of and beyond the bend 22.
  • the backrest 7 is divided into a plurality of backrest segments 10, which are arranged one above the other and take over the support function of the backrest 7 in their entirety.
  • the backrest segments 10 are lined up along the towering support profiles 8 and thereby fixed one above the other, as the drawing reveals. These backrest segments 10 have the shape of horizontal strips, which - arranged one above the other - together give the backrest 7. In this case, adjacent backrest segments 10 can touch; However, they preferably have a (small) distance, which is preferably smaller than the height of a backrest segment 10. This distance can be realized, for example, in that - as will be explained in more detail below - between two backrest segments 10 one or more, For example, plate-shaped spacers 30 are inserted. Each backrest segment 10 preferably has a comparatively stiff, supporting structural element 16 and can have, in particular on its front side, a soft padding supported thereon.
  • the structural elements 16 may, for example, be produced as plastic injection-molded parts; they may, for example, have a body 23 with a flat, approximately parallel to the backrest 7 shape.
  • a body 23 with a flat, approximately parallel to the backrest 7 shape For their mechanical stabilization, mutually parallel stiffening ribs and / or intersecting stiffening ribs could be provided on that flat body 23, for example on its rear side.
  • Ribs On the front sides of the structural elements 16 and stiffening elements, for example. Ribs could be provided; but if it suffers from the comfort, it should be waived.
  • the body 23 of these structural elements 16 may be both single-layered, or it could also consist of several, separate or even spaced parts or layers, as long as sufficient flexibility is ensured, because such flexibility is also transferred to the backrest 7 as a whole and is then felt by a seated person as pleasant.
  • the height extent of a structural element 16 should be greater than its measured thickness in the seat direction.
  • An upholstery can be done, for example, by a foam, which is subsequently foamed around the structural element 16 or at least at its front and thus od possible chambers or compartments between stiffening ribs. Like. Fills and thereby intimately and thereby also largely immovable with the structural element 16th combines.
  • the structural elements 16 of several or all of the backrest segments 10 are identical, the relevant backrest segments 10 can also have identical upholstery and thus each have the same shape, so that they are interchangeable. This is particularly possible because the backrest segments 10 along the support profiles 8 can be displaced so that they can be removed if necessary and, for example, cleaned and / or put back in a reversed order.
  • the structural elements 16 have no planar shape, but follow in the horizontal direction a slightly curved course, for example. Similar to the gently arched bow of a uniformly curved hanger, wherein the ends of the structural elements 16 in the region of their lateral end faces 11th slightly forward, so the front edge 12 of the seat 6 back, are curved.
  • the individual structural elements 16 each encompass both supporting profiles 8 and are aligned with their central region in each case parallel to the local Connecting line between the two support profiles 8, so the connecting line at the level of the respective structural element 16, from. They are thereby aligned at least approximately parallel to each other.
  • each supporting structural elements 16 of the individual backrest segments 10 surround the support profiles 8 completely, ie are each provided with a plurality of openings corresponding to the number of support profiles 8, which each structural element 16 in an approximately vertical direction between a top-side opening 14 and a bottom mouth 15 enforce.
  • no aperture 13 is located on the vertical (central) axis of symmetry of a structural element 16. It is more desirable to provide the apertures 13 in pairs, two apertures 13 being arranged in mirror image with respect to the vertical symmetry axis of the respective structural element 16.
  • a relative adjustability between the structural elements 16 on the one hand and the support profiles 8 on the other hand advantageous so that the individual structural elements 16 in each TorsionsSullivan the backrest 7 can each optimally adapt to the back of a seated person.
  • the invention provides that the support profiles 8 encompassing recesses 13 of the structural elements 16 have a special shape, as can be seen in particular from Figures 4 and 5.
  • the recesses 13 are in turn arranged approximately tubular or sleeve-shaped lugs 26 on the planar body of a structural element 16.
  • These lugs 26 extend in the vertical direction, ie transversely to the approximately horizontal longitudinal direction of the relevant structural element 16. Since, on the one hand, they have high intrinsic stability owing to their tubular or sleeve-shaped geometry, and, on the other hand, they are able to further stiffen the planar body of the structural elements , they can be used as starting points or crossing points for or with horizontal stiffening ribs.
  • the lugs 26 are located at the front of the structural elements 16, where they may in particular be surrounded by sufficient padding so as not to be perceived by a seated person; in another embodiment, for example, in a garden furniture without padding, the lugs 26 could also be arranged on the back of the structural elements 16, or instead of lugs 26, the through recesses 13 could also in relatively thick running structural elements 16 - eg. - From wood - be directly incorporated.
  • Each lug 26 encloses in its interior a continuous recess 13 for the passage of a support profile 8.
  • the lugs 26 have an approximately constant wall thickness, so that its inner circumference corresponds approximately to scale their respective outer shape.
  • This shape which is approximately the same both inside and outside, is subdivided into an upper section 27 and a lower section 28.
  • Both sections 27, 28 can be described as lateral surfaces of truncated cones, that is to say in each case an end of reduced cross-section and an end of contrast expanded cross-section.
  • the two conical sections 27, 28 are each placed against one another with their cross-sectionally tapered ends and diverge therefrom with increasing distance from the junction point 29 in the radial direction.
  • the opening angles of the two frusto-conical sections 27, 28 can be approximately the same, and they can, for example, be in a range between 1 ° and 20 °, preferably in a range of 2 ° to 15 °, in particular in a range of 3 ° to 10 ° or 4 ° to 8 °. In the region of the transition between the two frusto-conical sections 27, 28 these go on their inside without gradation into each other, preferably also on its outer side.
  • the two frusto-conical sections 27, 28 meet approximately halfway up the structural element 16 and thereby achieve approximately equal diameters in the region of their upper and lower mouth 14, 15.
  • spacer bodies 30 between two structural elements 16 which are immediately adjacent in the vertical direction. These can be seen in FIGS. 4 and 5.
  • the spacer bodies 30 have a planar or cuboidal shape. These can engage in at least one slot in the respective upper structural element 16 and in at least one slot in the respective lower structural element 16 and thereby keep the two structural elements 16 at a distance.
  • a spacer body 30 may be made of a rather hard material such as metal or hard rubber.
  • the lowermost structural element 16 sits on a horizontally extending transverse web 31, which connects the two support profiles 8 above their bends 22, ie in the lower part of their vertical legs with each other and thus supports the lowermost structural element 16. This then shares its position with the overlying structural elements 16 via the respectively inserted spacers 30.
  • Fig. 4 and 5 is also clearly visible that the structural elements 16 are connected at its two end faces 11 by a respective connecting bar 32 with each other.
  • This connection strips 32 is responsible for the task, the various structural elements 16 in bent and / or twisted state at their peripheral end faces 1 1 again "capture” and bring into line with each other, so that the impression of a uniform backrest 7 is not lost.
  • connecting strips 32 extend over the entire height of the backrest 7, and they should be flexible over their entire length, similar to a strapping. Like a peg, the connecting bars are intended to harmonize the edge contour of the backrest 7, that is, to make it follow a curve that curves as smoothly as possible.
  • the connecting strips 32 according to the invention are not left to themselves, but are coupled to the end faces 11 of the structural elements 16 such that they can be exchanged between those forces.
  • This coupling can, for example. Form-fitting done by specially designed elements interlock.
  • 1 1 sleeves 33 may be provided on the structural elements 16 in the region of their end faces, with which each of a similarly designed sleeves 34 on a connecting bar 32 in the assembly of the backrest 7 in a common escape and passing through screws 48 od. Like. Allow fasteners.
  • connection strip 32 may, for example, be designed as a profile with a U-shaped cross section and be placed over the end faces 11 of the structural elements 16 in such a way that their planar body 23 engages between the legs of this U-shaped cross section.
  • the structural elements 16 are encompassed on their front and rear sides and bending forces can be transmitted over a large area.
  • Both coupling techniques can also, for example, be combined with one another such that the connecting strip 32 instead of a U-shaped cross section has only an L-shaped cross-section and the structural elements 16 only on one side surrounds - ie, for example, only on the front sides, or only on their backs - wherein the above-described sleeves 33 are then provided on the respectively not encompassed front or back of the structural elements 16 can, for connection to sleeves 34 on the connecting bars 32nd
  • connection techniques are comparatively rigid, ie, that the assembled connection strip 32 can not shift in the area of contact with the structural elements 16 with respect to those, another type of coupling is also conceivable, such a displacement possibility exists.
  • This is above all a special form of tongue and groove connection, namely with a cross section which has an undercut.
  • the groove cross-section in the region of the top-side opening could be narrower than underneath, or at the bottom of the groove further than above it.
  • the spring engaging therein has a complementary cross-section, ie also changes its width, so that it fits exactly into the groove, then only displacement in the longitudinal direction of the tongue or spring is possible if there is no screw connection or if there is no other anchoring , This means that an assembly is not possible because the connecting strip 32 is pushed laterally on the end faces 11 of the structural elements 16, but only by the connecting bar 32 in its longitudinal direction along the edge profile of the Backrest 7 is pushed over the structural elements 16.
  • the connecting strip 32 can optionally carry the tongue or groove, wherein the respective pendant is then provided on or in the region of the end faces 11 of the structural elements 16.
  • connecting bars 32 can be used to carry or fix further elements of the office chair 1.
  • an upper-side closing element in the form of a connecting spar 35 can be seen, which is arranged above the uppermost structural element 16. It may be e.g. To act a hollow profile, for example. Of rectangular cross section, which, however, may preferably have a three-dimensional bulge adapted to the structural elements 16 in the horizontal direction.
  • At the upper ends of the connecting profiles 32 can be provided on the backrest 7 facing inner side tab-like extensions 36 which engage in the frontal openings 37 of the connecting spar 35 and thereby fix them.
  • a lordosis 38 which can also be seen in FIGS. 4 and 5.
  • Their central region 39 forms the actual lumbar support, which may also be padded, in particular on its front side, while mounting brackets 40 connect to both sides thereof which serve to anchor the lordosis 38 in the region of the two connection strips 32.
  • a vertical sliding guide each with a vertical longitudinal slot 42 in the form of a slot. it can each be a side tab 43 height-adjustable screwed, which then serves the actual anchoring to a connection bar 32.
  • these side flaps 43 can be inserted into lateral slots or grooves 44 on the inner side of the connecting strips 32 facing the backrest 7 and are then adjustable therein in the vertical direction. While the above screwing the side flaps 43 to the longitudinal slots 42 of the lordosis 38 only serves a factory default, a person can adjust the lumbar 38 by raising or lowering at any time to their individual anatomy, the side flaps 43 in the slots or grooves 44 of the connecting bars 32nd can slide up and down. To be able to be adjusted from the outside, the invention further provides that the side flaps 43 may be bent at its periphery, for example. To the rear, and can be guided by local slots 45 in the connecting bars 32 to the outside, from where they then can be taken to specifically adjust the lordosis 38.
  • FIG. 6 it is further provided to span all structural elements 16 at least at their front side with a common cover 46, so that it is hardly recognizable from the front, at least, that the backrest 7 is functionally divided into individual backrest segments 10.
  • This is particularly suitable for textile material made of natural and / or synthetic fibers.
  • This cover 46 may be anchored to the lateral connection bars 32, for example, clamped along its entire length. For this purpose, it has proven to be particularly effective to first guide the cover 46 on the outside of the connecting strips 32 around and then to anchor at the rear, so that there is an aesthetically pleasing backrest edge.
  • the cover 46 in the non-powered state of a concavely curved front of Lehnensegmente 10 does not follow, but stands out from it and spans the shortest path. Only when seated a person is he pushed backwards and puts on the backrest segments 10 at.
  • the material of the cover 46 should be stretchable, for example by a nylon content of 2% in the fabric or more, for example by a nylon content of 5% in the fabric or more, especially by one Nylon content of 10% in the fabric or more.
  • the cover 46 may also have the shape of a band, which wraps vone, laterally and rearwardly around the backrest 7 and therefore requires no additional clamping elements.
  • this embodiment can also be developed so that a banderoleförmigem cover 46 is closed at its top as an upside-down bag. Then, the cover 46 can be slipped over from above over the backrest 7, wherein he can not slide down.
  • the cover could also be in the form of a pillowcase by having one or more zippers, snaps or the like on its underside, and / or along another peripheral edge.
  • FIG. 7 a modified embodiment of a seat V according to the invention is shown. It can be seen the lower part of the supporting structure 49 of the backrest 7 '.
  • a comparison with Figures 4 and 5 shows the differences of this second embodiment of a seat 1 'according to the invention.
  • the backrest 7 is formed of a plurality of separate structural elements 16, which at their side edges are connected to each other only by the assembly of initially separately produced connecting strips 32, the structural elements 16 'are integrally molded together in the seating 1'.
  • This can be done for example by using a common injection mold, wherein the entire support structure 49 of the backrest 7 'is poured in one operation.
  • a material for this is preferably a flexurally elastic material, in particular a limited flexurally elastic plastic.
  • the structural elements 16 ' only form sections of a common body as support structure 49 of the backrest 7'.
  • the connecting strips 32 may, for example, be made of extruded profiles, ie with a constant cross-section, although it is also possible to simplify the installation to use 32 connecting bars with variable cross-section, as shown in Fig. 5 is.
  • the side edges 32 'of the second seating furniture embodiment 1' according to FIG. 7 can also have a constant profile or a constant cross section, in particular at the level of the individual structural elements 16 ', but this need not necessarily apply everywhere.
  • FIG. 7 there is a thickened edge 50, 51 encircling the edge along large edge sections, wherein a consequently raised area is preferably located on the rear side of the structural elements 16 '.
  • the thickened, lateral edge region 50 can each have a groove-shaped depression 53 in the region of the rear side of the backrest 7 'or in the region of the rear side edges 52, wherein a frontal covering 46 for the backrest 7' can be anchored, in particular for receiving one with the stringing connected piping rail.
  • Kederschiene can basically a thin and therefore flexible metal rail can be used or a plastic rail with sufficient flexibility, so that it exerts no stiffening effect on the backrest 7 '.
  • Such a groove-shaped recess 53 is missing at the top and bottom edges 9 f , 25 'of the backrest 7' completely.
  • Fig. 7 shows connecting regions 54 between adjacent structural elements 16 ', where the cross-sectional geometry of the lateral edges 32' is variable.
  • lateral connecting regions 54 between adjacent structural elements 16 ' there may also be alternating cuts from opposite sides - that is, for example, alternately from the front and back 52 of the supporting structure 49 of the backrest 7' - so that the region which remains standing is a perimeter-like structure assuming that even in the longitudinal direction allows a slight or limited deformation, ie a compression or expansion in an approximately vertical direction.
  • the individual structural elements 16 ' which are coupled to one another at the connection regions 54 can move relative to one another there, preferably in all spatial directions, but this mobility is limited and the unit of the backrest 7 'remains optically preserved.
  • central spacer bodies 30' may be wholly or partly integrated injection-technically between the individual structural elements 16 ', ie be designed in one piece with the rest of the support structure 49 ,
  • a plurality of, namely three, approximately vertically extending webs 56 are integrally formed in the region of the vertical center or symmetry axis of the backrest 7 ', ie, they form the upper and lower sides 24', 25 'adjacent one another Connect structural elements 16 'together.
  • These webs 56 may be arched forward and therefore together with the adjacent top and bottom 24 ', 25' form a kind of pocket into which, for example, an elastic connecting part 57 can be inserted.
  • connecting part 57 may serve a short, horizontal rod, which can compensate for a vertical bumps within the backrest T almost like a buffer.
  • the lugs 26 ' which surround the support profiles 8', are not completely formed on the structural elements 16 '. Rather, the structural elements 16 'are divided and each comprise a separate part 58, which is attached to a structural element 16', for example, is screwed. This eliminates the need to use a core to make the cavity within the lug 26 '. Instead, both the support structure 49 and the separate part 58 without undercuts injection-molded and easily demolded. Finally, it can be seen in FIG. 7 that the supporting profiles 8 'themselves do not have to be fixed to a mounting or carrying device below the seat surface.
  • the two support profiles 8 ' are not provided with a lower-side bend, but end relatively straight and are connected to each other in the region of their lower ends 59 by a plate 60;
  • This plate 60 may, for example, be welded to the two support profiles 8 '.
  • This plate 60 is in turn provided with a plurality of apertures, for example. With four arranged in a square holes for Hindereititt each a screw 61. With these screws 61, the plate 60 may be fixed to an extension 62 of an assembly or support device.
  • This extension 62 may also consist of a hard or durable plastic, which in turn may be provided with a reinforcement, for example. With glass fibers and / or -bällchen, so that the extension 62 is sufficiently rigid and / or tough.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

L'invention concerne un siège comportant au moins une assise et au moins un dossier, deux profilés oblongs ou plus, de préférence dotés chacun de sections transversales extérieures rondes, étant fixés à une partie porteuse dans la zone de l'assise, lesdits profilés faisant saillie vers le haut parallèlement l'un à l'autre à l'intérieur de la surface du dossier, mais sans liaison fixe directe entre eux, approximativement jusqu'au bord supérieur du dossier, ledit dossier étant divisé verticalement en plusieurs segments de dossier, de préférence en au moins trois segments, lesdits segments ayant chacun la forme d'une bande à extension longitudinale horizontale et comportant chacun un élément structural intérieur porteur, plat au moins par endroits, lequel est destiné à soutenir un rembourrage constitué d'une matière molle, fixé au segment ou l'entourant, et/ou une matière de revêtement, un élément structural intérieur, plat au moins par endroits, comportant pour chaque profilé une cavité traversante, dont la face intérieure enserre ou entoure complètement, ou au moins partiellement, le profilé concerné, une liaison articulée étant réalisée entre la face intérieure de la cavité située dans l'élément structural et le profile enserré ou entouré par celle-ci, ladite liaison articulée permettant une rotation du segment de dossier concerné autour de l'axe longitudinal du profilé et/ou un pivotement du segment de dossier concerné dans une direction perpendiculaire à l'axe longitudinal du profilé enserré, de préférence autour d'une direction suivant la ligne de liaison entre les deux profilés. Selon l'invention, deux éléments structuraux plats ou plus ou bien tous les éléments structuraux plats sont reliés entre eux, chacun dans la zone d'au moins une de leurs surfaces frontales latérales.
PCT/IB2017/000486 2017-04-28 2017-04-28 Siège Ceased WO2018197915A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113928197A (zh) * 2021-11-24 2022-01-14 延锋国际座椅系统有限公司 一种集成式电动背部支撑结构
US20240148576A1 (en) * 2022-11-04 2024-05-09 Life & Mobility Development B.V. Backrest and chair
DE102023114299B3 (de) 2023-05-31 2024-10-10 Krall+Roth Services GmbH & Co. KG Sitz- oder Liegemöbel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5320410A (en) * 1992-01-14 1994-06-14 Steelcase Inc. Chair control
DE202004005169U1 (de) * 2004-03-30 2004-07-22 Deisig, Wolfgang Büroarbeitsstuhl
US20040195882A1 (en) * 2001-06-14 2004-10-07 Adam White Seats
DE102005001960A1 (de) * 2005-01-15 2006-07-20 Daimlerchrysler Ag Fahrzeugsitz
DE202006016346U1 (de) 2006-10-23 2008-02-28 Interstuhl Büromöbel GmbH & Co. KG Rückenlehne eines Stuhls
DE202015000705U1 (de) * 2015-01-30 2015-04-10 Jürgen Zimmermann Sitzmöbel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5320410A (en) * 1992-01-14 1994-06-14 Steelcase Inc. Chair control
US20040195882A1 (en) * 2001-06-14 2004-10-07 Adam White Seats
DE202004005169U1 (de) * 2004-03-30 2004-07-22 Deisig, Wolfgang Büroarbeitsstuhl
DE102005001960A1 (de) * 2005-01-15 2006-07-20 Daimlerchrysler Ag Fahrzeugsitz
DE202006016346U1 (de) 2006-10-23 2008-02-28 Interstuhl Büromöbel GmbH & Co. KG Rückenlehne eines Stuhls
DE202015000705U1 (de) * 2015-01-30 2015-04-10 Jürgen Zimmermann Sitzmöbel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113928197A (zh) * 2021-11-24 2022-01-14 延锋国际座椅系统有限公司 一种集成式电动背部支撑结构
US20240148576A1 (en) * 2022-11-04 2024-05-09 Life & Mobility Development B.V. Backrest and chair
US12383448B2 (en) * 2022-11-04 2025-08-12 Life & Mobility Development B.V. Backrest and chair
DE102023114299B3 (de) 2023-05-31 2024-10-10 Krall+Roth Services GmbH & Co. KG Sitz- oder Liegemöbel

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