WO2023147902A1 - Meuble d'assise comportant un cadre et un élément de surface d'assise - Google Patents

Meuble d'assise comportant un cadre et un élément de surface d'assise Download PDF

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Publication number
WO2023147902A1
WO2023147902A1 PCT/EP2022/080313 EP2022080313W WO2023147902A1 WO 2023147902 A1 WO2023147902 A1 WO 2023147902A1 EP 2022080313 W EP2022080313 W EP 2022080313W WO 2023147902 A1 WO2023147902 A1 WO 2023147902A1
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WO
WIPO (PCT)
Prior art keywords
seating furniture
seat
spring
furniture according
frame
Prior art date
Application number
PCT/EP2022/080313
Other languages
German (de)
English (en)
Inventor
Gueorgui KRASTEV
Original Assignee
Krastev Gueorgui
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 Krastev Gueorgui filed Critical Krastev Gueorgui
Publication of WO2023147902A1 publication Critical patent/WO2023147902A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable parts
    • 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
    • A47C1/12—Theatre, auditorium, or similar chairs
    • A47C1/121—Theatre, auditorium, or similar chairs having tipping-up seats
    • 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
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/0255—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame pivotally mounted in the base frame, e.g. swings
    • 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
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
    • 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
    • A47C7/02—Seat parts
    • A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions

Definitions

  • the present invention relates to a piece of seating furniture with a frame and a seat element, which forms a seat on a top and has a front and a back.
  • seating furniture regularly have a rigid connection between the seat and backrest.
  • seating furniture which has a seat surface that is separate from the rear. Nevertheless, there is a rigid connection with this seating furniture with a constant distance between the seat and the backrest. When sitting for a long time, such seating furniture leads to an unergonomic posture in which the spine is compressed or compressed by the load.
  • WO 02/060299 A1 discloses seating furniture with a flexible seat.
  • the seat is rigidly connected to the frame of the seating furniture and, thanks to its flexibility, allows a height adjustment to the fixed lumbar support, depending on the weight of a person.
  • the present invention has set itself the task of providing a piece of seating furniture with high ergonomics, which supports an ergonomic sitting posture.
  • a chair with a frame and a seat element which forms a seat on a top and a Has a front side and a back side, wherein the seat element is connected to the frame via at least one guide element in such a way that the back side of the seat element can be moved along a vertical direction, and the piece of seating furniture has a holding means for exerting a holding force on the seat element along the vertical direction.
  • a piece of seating furniture is understood as meaning any piece of furniture which is suitable for receiving a seated person.
  • the piece of seating furniture can be a chair, an armchair, an office chair, a swivel chair, an armchair, a theater or cinema chair, a folding chair, seating in a means of transport or the like.
  • the rear side of the seat element is understood to mean that side of the seat element or the seat which runs along the back or the buttocks of a person sitting on the chair.
  • the front side of the seat surface element is understood to be that side which is opposite the back side and on which the legs of a seated person rest.
  • the surface of the seat element is also understood to mean that surface of the seat element which faces the person sitting on the chair.
  • Free mobility of the back of the seat element along a vertical direction is understood in particular to mean that the seat element is not constructively connected to the frame in the area of the back, ie it is cantilevered or cantilevered towards the back.
  • the seat element being connected to the frame via at least one guide element in such a way that the back of the seat element is movable along a vertical direction, a seesaw movement of the seat element is made possible by the body weight of a person on the seat.
  • mobility in the rear area of the seat element can relieve the strain on the spine, since the seat element can give way under the load of the body weight or can adapt to changing loads on the seat surface.
  • the spine When sitting on a rigid surface, the spine is usually compressed and curved, as the high load on the back of the seat is completely carried away and thus reflected. Due to the flexible mobility of the seat element in the back area, taking a anatomically correct seating position and prevents unwanted compression of the spine.
  • the guide element which connects the frame and seat element to allow the movement of the seat element, a structurally particularly simple piece of furniture with a vertically movable seat element can be created.
  • holding force is understood to mean a force which counteracts the deflection of the seat surface element from a rest position in the vertical direction.
  • the holding means can thus impede the deflection of the seat element and enable a resistance against the loading of the body weight, which supports the seesaw movement of the seat element.
  • the combination of guide element and holding means ensures that a movement of the seat element in the vertical direction is only possible under loading of the seat element by the body weight of a person and that this returns to its starting position without loading.
  • the seesaw effect can be achieved by changing the strength of the weight load.
  • the chair according to the invention can be made of any material, since no requirements must be placed on the nature or material properties of the frame or the seat.
  • frames made of metal tubes, wooden elements, panels, plastic parts or the like can be used.
  • the seat can be made of any (wood, plastic, or metal) plates, belts, textile, etc. rigid or flexible.
  • the advantages of the invention can be distinguished in particular in the case of rigid, non-flexible seat surfaces, since the seesaw effect or the movement of the seat surface element can be reliably controlled and adjusted using the guide element and the holding means.
  • a catapult-like effect of the seesaw movement can be achieved, with a higher holding force or counteracting force acting on the seat element and thus springing back.
  • This springy movement further supports the relief of the spine [0018]
  • a piece of seating furniture is thus created which, in a structurally simple manner, enables a particularly high level of seating comfort and an ergonomic seating position.
  • a dynamic load thus arises, which has significant advantages over a fixed sitting position in which a constant and essentially uniform shift in body weight up and down takes place.
  • the guide element can allow the seat element to rotate about an axis of rotation.
  • the axis of rotation allows a movement of the seat surface element in the rear area in a structurally simple manner.
  • the position of the guide element, and thus the position of the axis of rotation can influence the loading or the deflection of the seat element in the rear area.
  • the retaining means prevents free movement (rotation) of the seat surface element in the rear region.
  • the axis of rotation can be arranged in particular in the area of the front side of the seat element.
  • a direct deflection of the seat surface in the area of the rear side can be effected by forces acting on the seat surface.
  • part of the load can be transferred to the guide element or to the axis of rotation.
  • a movement of the seat element in the vertical direction in the area of the front can also be prevented by arranging the axis of rotation in the area of the front.
  • a stable seat with secure support for the legs can be created in this way.
  • the at least one guide element can be a joint.
  • the joint can be used to create a reliable connection between the frame and the seat element with at least one degree of freedom, the degree of freedom of the joint enabling vertical movement of the seat element in the rear area.
  • the at least one degree of freedom can in particular be a rotation around the axis of rotation.
  • the joint can also allow several degrees of freedom (e.g. a combination of rotation and translation).
  • the joint can also be designed as a holding means in order to counteract a rotation of the seat element about the axis of rotation.
  • the joint can thus exert a restoring force or a restoring moment on the seat element, so that the seat element remains in a starting position or rest position without load and, when loaded with the body weight of a person, moves vertically by a specific, predefined deflection in the area of the back moves or gives way below.
  • the restoring moment in the holding means or in the joint thus exerting a permanent holding force on the seat element in the area of the back, which is opposite to the weight of the person.
  • the joint can be designed as a spring joint, which can generate the necessary holding force in the area of the back of the seat element by its spring force.
  • a particularly reliable piece of seating furniture can be created, since spring joints are friction-free, play-free and therefore maintenance-free.
  • the spring joint can be designed as a solid joint.
  • the flexure joint can be formed in particular by weakening, constriction, tapering, etc. of the seat element and/or the frame.
  • the at least one guide element can be a bearing.
  • a bearing allows the seat element to move freely with at least one degree of freedom.
  • the bearing also makes it possible to prevent movements in undesired degrees of freedom. A stable and reliable guidance of the seat surface element can be created in this way.
  • the bearing can be a radial bearing, which allows free rotation of the seat element about the axis of rotation.
  • a structurally particularly simple piece of seating furniture can be created in this way.
  • the seat element can be displaced from a folded-up or folded-in rest position into a folded-down or folded-out operating position.
  • the radial bearing can allow the seat element to be folded up and down alternately due to the large freedom of movement and the free rotatability of the seat surface element.
  • Such a foldable seat element can be particularly suitable for use in folding armchairs, cinema or theater chairs or the like.
  • the seat in the seating furniture according to the invention is folded out from the front to the back.
  • the bearing can also be slidably mounted along a linear guide from the rest position to the operating position.
  • the guide element can thus consist of a combined linear and radial bearing, the radial bearing with the axis of rotation for the seat element in turn being displaceably mounted in the linear bearing.
  • the seat element Due to the displaceable mounting of the axis of rotation, the seat element can move when it is folded up or down, for example, so that when it is folded up it is pushed towards the backrest (rest position), while when it is folded down it is locked in the front area of the chair for vertical movement to allow the seat element.
  • a piece of seating furniture that is particularly compact when folded up can be created in this way, which is particularly suitable for use in cinema or theater chairs.
  • a spring element can be provided as a holding means between the seat element and the frame, in order to counteract a force acting on the seat surface in the region of the back of the seat element. Due to its attachment to the frame, the spring element can thus transfer the load caused by the weight of a person and exert a corresponding counterforce in order to produce the rocking effect in the rear area of the seat element. In this way, together with the guide element, the spring element can enable a spring-loaded vertical movement of the seat surface element in the region of the rear in a structurally simple and reliable manner.
  • the spring element can have a compression spring.
  • the compression spring can be, for example, a spring consisting of coiled wire, or a solid spring, in particular made of elastomer.
  • a spring made of elastomer can be distinguished, for example, by its particularly compact design and the ease of assembly.
  • the spring element can have a tension spring.
  • a tension spring can also be provided between the frame and the seat element, so that the seat element is suspended on at least one tension spring in the region of the back.
  • the spring element can have a leaf spring.
  • the leaf spring can preferably be fastened to the frame in such a way that the seat element rests resiliently in a contact area of the leaf spring.
  • the leaf spring can have one or more wooden springs, spring leaves or spring assemblies, which are used to generate the counterforce in the rear area of the seat element interaction.
  • the spring leaves can be made of wood, plastic or metal.
  • the spring element can have a torsion spring.
  • Torsion springs have a planar, essentially helical spring that generates a torsional moment that can serve as a restoring moment for a deflection of the seat element in the area of the back from the rest position.
  • the spring element can have one or more air springs and/or gas springs and/or fluid springs.
  • the spring element can be slidably mounted on the frame.
  • the spring element can also be slidably mounted between the front and rear and/or between the sides. Due to the displaceability between the front and rear of the seat element, the counterforce exerted on the seat element can be adjusted with a constant spring constant of the spring element. Slidability between the sides of the seat panel can also adjust the lateral balance of the seat panel.
  • the spring constant or the spring hardness of the spring element can be adjustable by an adjusting element.
  • the counterforce exerted on the seat surface element can be set easily and reliably and adapted to the respective person. A particularly comfortable and ergonomic piece of seating furniture can be created in this way.
  • the seat element can have a retaining bracket on its front side, which is pressed against the frame when a force acts on the seat surface in the region of the rear side of the seat surface element.
  • a headband can preferably encompass the frame starting from the front of the piece of seating furniture, so that the headband rests against the frame when the seat surface element is deflected to a certain extent and presses against the back of the frame when the load is increased.
  • a structurally simple and reliable piece of seating furniture can be created in this way.
  • the spring element can be provided between the retaining clip and the frame.
  • the headband is thus not pressed directly against the frame when the seat element is loaded, but the The load is carried by the spring element provided between the frame and the retaining bracket.
  • the spring element can preferably be an elastomer.
  • the seat element can have a seat plate with two projections on the back, the projections being separated by a recess in the seat plate starting from the rear, which can prevent a direct load transfer from the upper body to the coccyx.
  • Additional springing between the projections in the rear area of the seat element can be achieved by two separate projections in the seat panel, so that an independent vertical movement of the projections is made possible in relation to the vertical movement of the entire seat element.
  • a stimulation of the left-right balance between the ischial tuberosities of a person sitting on the seat surface element can be achieved, which can further improve the ergonomics of the seating furniture item.
  • This division of the seat into a left and right half allows for autonomous loading of the buttocks and also relieves the coccyx and improves ergonomics, as a result of continuous lateral oscillation of the spine and thus a reduction in back stiffness from long periods of sitting is stimulated.
  • the projections can be resiliently connected to the seat plate in one piece for this purpose, so that a mutually independent deflection of the projections is made possible by forces acting on the projections.
  • the seat panel and the projections can be made of one material, with the recess being made in the seat panel in order to produce the projections.
  • the chair can have a backrest and an armrest, whereby the ergonomics of the chair can be improved.
  • the backrest can be designed to be flexible and consist of stretched textile, leather or imitation leather.
  • the backrest of the chair is essentially not flexible or rigid.
  • the rigid backrest can provide reliable support for the spine, which in combination with the Rocking effect can lead to an improved ergonomic sitting position with a relieved spine.
  • the backrest can be divided into several parts which are spaced apart from one another by recesses.
  • a split can be made vertically along the center line of the backrest, thus dividing the backrest into left and right halves.
  • the distance between the parts of the backrest can be at least 30mm to reduce the risk of injury.
  • the front side of the seat element can have a saddle-like shape.
  • the seat element is partially cut out in the area of the thigh support so that the legs can move more freely and the pressure on the thighs is reduced.
  • both the seat surface element and the backrest can have upholstery and/or covers and/or coverings.
  • both the seat surface element and/or the backrest can consist of panels.
  • the backrest and armrest can be designed in one piece.
  • the one-piece connection between the backrest and armrest allows a structurally simple piece of seating furniture to be created, for example from continuous curved tubes, round wood, glued wood, profiles, etc.
  • the backrest and/or armrest can be adjustably connected to the frame.
  • the adjustability can preferably be achieved by adjusting elements (screws, linear guides, clamping elements, etc.).
  • the backrest and armrest can be adjusted preferably along two directions which are normal to one another.
  • the seating furniture can thus be easily adapted to the body size or back height and seat length of the respective person, as a result of which the ergonomics of the seating furniture can be further improved.
  • the backrest and armrest can be connected to one another via a flexure joint.
  • the connection via a solid joint allows a high degree of flexibility to be achieved between the armrest and the backrest, so that a resilient movement between the two is made possible.
  • the flexure joint can be designed, for example, as a constriction, spring or loop (torsion spring).
  • the chair can have a stomach rest which is adjustably connected to the frame.
  • a piece of seating furniture with a high level of seating comfort can be created, for example when working at a desk.
  • the armrest of the chair can have an armrest limiter.
  • an armrest limitation allows the armrest to be used from only one side. This is particularly advantageous when the seating furniture is to be installed in a row with adjacent, similar seating furniture, for example in the case of theater or cinema seating.
  • an armrest with an armrest limitation can only be provided on one side of the chair.
  • people are encouraged to lean on the side with the armrest and thus deviate their field of vision from the central axis of the seat
  • theater or cinema seating can be provided in which rows with changing positions of the armrests and armrest delimitation are provided. Even if the seating furniture is positioned directly one behind the other, it can be achieved that the people leaning on the respective armrest have a clear field of vision, since the respective side of the armrest alternates between the rows. In addition, an armrest can be guaranteed for each person.
  • the piece of seating furniture can have a lumbar support.
  • the lumbar support can optimally support the spine of a person and thus, together with the rocking effect, contribute to optimal relief.
  • the curvature or bend of the lumbar support can preferably correspond to an anatomical curvature of the spine.
  • the lumbar support can be formed by the frame.
  • the frame can have loops, curves or bends that form the lumbar support.
  • a foot of the frame can merge into the backrest in the form of a spiral or loop and thus form the lumbar support.
  • the lumbar support can be slidably mounted on the backrest and thus allow a simple adjustment of the height of the lumbar support.
  • the frame can comprise a single-piece frame.
  • the frame merges in one piece from a foot into the backrest and optionally into an armrest.
  • the frame can consist of bent round wood or bent metal or plastic. A structurally particularly simple piece of seating furniture can be created in this way.
  • the piece of seating furniture can have a massage device integrated in the backrest and/or in the armrest and/or in the seat element.
  • the massage device can have an electrically movable ball, which can improve and stimulate the blood circulation in the muscles of the person through its movement. Stimulating blood circulation can improve venous transport and prevent thrombosis, especially when sitting for long periods.
  • All of the illustrated embodiment variants can preferably be used in means of transport, in particular in cars, buses, trains, ships, airplanes or the like.
  • the seating furniture according to the invention as seating in an airplane, for example, the seating comfort in economy class can be significantly increased and a comparable or higher seating comfort than with conventional business class seating can be achieved. Seating comfort can be significantly improved, especially on long-haul flights, bus or train journeys.
  • All of the illustrated embodiment variants can also be suitable for use as seating in cinemas, theaters or concert halls.
  • FIG. 1a shows a schematic front view of a piece of seating furniture according to a first embodiment variant of the invention
  • Fig. 1b shows a schematic side view of the piece of seating furniture from Fig. 1a
  • FIG. 1c shows a schematic plan view of the seating furniture item from FIG. 1a
  • FIG. 2a shows a schematic rear view of a piece of seating furniture according to a second embodiment variant of the invention
  • FIG. 2b shows a schematic side view of the piece of seating furniture from FIG. 2a
  • FIG. 2c shows a schematic top view of the seating furniture item from FIG. 2a
  • FIG. 3a shows a schematic front view of a piece of seating furniture according to a third embodiment variant of the invention
  • FIG. 3b shows a schematic side view of the piece of seating furniture from FIG. 3a
  • FIG. 3c shows a schematic plan view of the seating furniture item from FIG. 3a
  • FIG. 4a shows a schematic front view of a piece of seating furniture according to a fourth embodiment variant of the invention
  • FIG. 4b shows a schematic side view of the piece of seating furniture from FIG. 4a
  • FIG. 4c shows a schematic plan view of the seating furniture item from FIG. 4a
  • FIG. 5a shows a schematic front view of a piece of seating furniture according to a fifth embodiment variant of the invention
  • Fig. 5b shows a schematic side view of the piece of seating furniture from Fig. 5a
  • FIG. 5c shows a schematic top view of the seating furniture item from FIG. 5a
  • FIG. 6a shows a schematic front view of a piece of seating furniture according to a sixth embodiment variant of the invention
  • FIG. 6b shows a schematic side view of the piece of seating furniture from FIG. 6a
  • FIG. 6c shows a schematic plan view of the seating furniture item from FIG. 6a
  • FIG. 7a shows a schematic front view of a piece of seating furniture according to a seventh embodiment variant of the invention
  • FIG. 7b shows a schematic cross-sectional view of the piece of seating furniture from FIG. 7a
  • FIG. 7c shows a schematic top view of the seating furniture item from FIG. 7a
  • FIG. 8a shows a schematic cross-sectional view of a piece of seating furniture according to an eighth embodiment variant of the invention
  • FIG. 8b shows a schematic side view of the piece of seating furniture from FIG. 8a
  • FIG. 8c shows a schematic plan view of the seating furniture item from FIG. 8a
  • FIG. 9a shows a schematic front view of a piece of seating furniture according to a ninth embodiment variant of the invention.
  • FIG. 9b shows a schematic side view of the piece of seating furniture from FIG. 9a
  • FIG. 9c shows a schematic top view of the seating furniture item from FIG. 9a
  • FIG. 10a shows a schematic front view of a piece of seating furniture according to a tenth embodiment of the invention
  • FIG. 10b shows a schematic side view of the piece of seating furniture from FIG. 10a
  • FIG. 10c shows a schematic plan view of the piece of seating furniture from FIG. 10a
  • 11a shows a schematic front view of a piece of seating furniture according to an eleventh embodiment variant of the invention
  • FIG. 11b shows a schematic side view of the piece of seating furniture from FIG. 11a
  • 11c shows a schematic top view of the seating furniture item from FIG. 11a
  • FIG. 12a shows a schematic front view of a piece of seating furniture according to a twelfth embodiment variant of the invention
  • FIG. 12b shows a schematic side view of the piece of seating furniture from FIG. 12a
  • FIG. 12c shows a schematic plan view of the piece of seating furniture from FIG. 12a
  • FIG. 13a shows a schematic front view of a piece of seating furniture according to a thirteenth embodiment variant of the invention
  • FIG. 13b shows a schematic side view of the piece of seating furniture from FIG. 13a
  • FIG. 13c shows a schematic top view of the piece of seating furniture from FIG. 13a.
  • the seating furniture item 100 according to the invention is described below by way of example with reference to the embodiment variants shown in the figures. It is pointed out that the features of the embodiment variants shown in the figures can be combined with one another as desired, unless otherwise specified below.
  • FIG. 1 a shows a front view of the item of seating furniture 100
  • Fig. 1 b shows a side view of the item of seating furniture 100
  • Fig. 1 c shows a top view of the item of seating furniture 100.
  • the piece of seating furniture is designed as a chair 200 and has a frame 1 and a seat element 2 .
  • the seat element 2 forms a seat surface 5 on its upper side 3, which can accommodate a seated person.
  • the frame 1 is made of a continuous, one-piece frame 7 in the style of a cantilever chair.
  • the one-piece frame 7 can preferably consist of bent molded tubing or bent wood.
  • the frame 7 can also consist of glued or bonded wood, welded metal or plastic.
  • Struts 59 can be provided between the side parts of the frame 7 for stabilization.
  • the seat element 2 By connecting the frame 1 and the seat element 2 via the guide element 6, the seat element 2 can be moved at its back 8 by loading along the vertical direction 10.
  • the seat element 2 is thus self-supporting or cantilevered from the front side 9 to the back side 8 educated.
  • the seat surface element 2 On the other hand, on the front side 9, the seat surface element 2 is essentially not movable in the vertical direction 10 due to the fixation via the guide element 6.
  • the guide element 6 is designed as an elastomeric spring joint 11, which extends over the entire width of the chair 100 in the area of the front side 9.
  • the guide element 6 thus enables a rotation of the seat element 2 about an axis of rotation 15 which is arranged in the area of the front side 9 .
  • a defined proportion of the weight of a person sitting on the seat surface 5 can be transferred to the back 8 of the seat surface element 2 and lead to a deflection in the vertical direction 10.
  • the spring joint 11 also acts as a holding means 12 which exerts a holding force on the seat element 2 in the vertical direction 10 .
  • This holding force acts as a counterforce to a deflection of the seat surface element 2 in the vertical direction 10.
  • the piece of seating furniture 100 has a further holding means 12.1, which is slidably mounted on the frame 7 of the frame 1 and, when the seat surface element 2 is deflected significantly in the vertical direction 10, supports it.
  • the displaceable mounting of the holding means 12.1 is indicated by arrows.
  • the holding means 12.1 has a spring element 13, which is designed as a compression spring 14 made of elastomer. The spring element 13 can counteract a force acting on the seat surface 5 in the area of the rear side 8 in the vertical direction 10 .
  • the two holding means 12, 12.1 can thus produce a resilient effect or a rocking effect in the area of the back of the seat element 2, with the seat element 2 yielding under increased load and springing back under reduced load.
  • This rocking effect encourages a seated person to improve their posture or adopt an ergonomic sitting posture.
  • the displaceable mounting of the holding means 12.1 also allows the deflection of the seat surface element 2 to be limited and the spring force of the compression spring 14 to be adjusted. Thus, the rocking effect can be easily adapted to the respective person.
  • the seat element 2 consists of a seat plate 16, with two projections 17.1, 17.2 on the back 8.
  • the projections 17.1, 17.2 are characterized by a recess 18, which is from the Back 8 extends towards the front 9, separated and formed out of the seat plate 16 in one piece.
  • the projections 17.1, 17.2 can thus under load by one person on the seat 5 independently of one another and thus reinforce the rocking effect with a left-right balance.
  • the chair 100 has a backrest 19 which is formed by the frame 7 of the frame 1 .
  • a displaceable lumbar support 20 is provided on the backrest 19, which can ergonomically support the spine of a person on the chair 100 in the lumbar region and thus increase the seating comfort.
  • a back cover 21 made in particular of fabric or leather, is stretched over the backrest 19 and the lumbar support 20 .
  • a back plate made of plywood, sheet metal, plastic, etc. can also be provided instead of the back cover 21 made of fabric.
  • FIG. 2a shows a rear view of the item of seating furniture 101
  • FIG. 1b shows a side view of the item of seating furniture 101
  • FIG. 2a shows a rear view of the item of seating furniture 101
  • FIG. 1b shows a side view of the item of seating furniture 101
  • FIG. 2a shows a rear view of the item of seating furniture 101
  • FIG. 1b shows a side view of the item of seating furniture 101
  • FIG. 2a shows a rear view of the item of seating furniture 101
  • FIG. 1b shows a side view of the item of seating furniture 101
  • FIGS. 1a to 1c which can also be used for seating furniture 101 according to the second embodiment variant, unless otherwise described below.
  • the same reference symbols designate the same features in each case.
  • the piece of seating furniture 101 has a bearing 22 as a guide means 6.1, which serves to mount the seat element 2 on the frame 1 and is designed as a radial bearing 23.
  • the piece of seating furniture 101 has a holding bracket 24 to which the seat element 2 is fastened and which is connected via the radial bearing 23 to the frame 1 so that it can rotate about the axis of rotation 15, as can be seen from FIGS. 2a and 2c.
  • the retaining clip 24 is designed in such a way that it encompasses the frame 1 of the chair 101 from the front side, which can be seen from FIGS. 2a and 2b.
  • Retaining means 12.2 are provided on each side between the frame 1 and the retaining bracket 24, which counteract a force in the vertical direction 10 acting on the seat surface 5 in the region of the rear side 8.
  • the retaining clip 24 is rotated about the axis of rotation 15 and is pressed against the frame 1 on the rear at those points where the retaining means 12.2 are provided.
  • the holding means 12.2 thus absorb the force acting on the seat surface element 2 and transfer it to the frame 1.
  • the holding means 12.1 each have a spring element 13.1, which is designed as a compression spring 14.1 made of elastomer.
  • the compression springs 14.1 are shaped in such a way that they receive the holding bracket 24 in a corresponding recess 25 and can be compressed under pressure or generate a counterforce.
  • the frame 1 of the chair 101 has a foot part 26 and a back part 27 which are adjustably connected via an arm part 28 .
  • the back part 27 forms the backrest 19 of the chair 101, while the arm part 28 forms the armrest 29 of the chair.
  • Both the back part 27 and the foot part 26 have latching positions 30 into which the arm part can latch and thus adjust the height of the armrest 29 and the depth of the backrest 19.
  • the backrest 19 in turn has a lumbar support 20, which can also be adjusted in height to a person's spine via the adjustment mechanism of the arm part 28 described above.
  • the lumbar support 20 is designed as a loop 31 in the back part 27 of the frame 1 .
  • FIG. 3a shows a front view of the item of seating furniture 102
  • FIG. 3b shows a side view of the item of seating furniture 102
  • FIG. 3a shows a front view of the item of seating furniture 102
  • FIG. 3b shows a side view of the item of seating furniture 102
  • FIG. 3a shows a front view of the item of seating furniture 102
  • FIG. 3b shows a side view of the item of seating furniture 102
  • the seating 102 is a combination of the previously described seating 100 and 101 according to the first and second embodiment, as described below.
  • An elastomeric spring joint 11 is used as the guide element 6, which at the same time acts as a holding means 12, as was previously described for the seating furniture item 100 according to the first embodiment variant.
  • the guide element 6 has three of the elastomeric spring joints 11 which are distributed over the front side 9 of the seat element 2 in order to connect it to the frame 1 .
  • a spring element 13 which is movably mounted on the frame 1 and is designed as a compression spring 14 made of elastomer is used as the second holding means 12.1.
  • the frame 1 of the chair 102 has, as previously described for the chair 101 according to the second embodiment variant, a foot part 26, a back part 27 and an arm part 28, which allow adjustment via locking positions 30.
  • a section 32 of the foot part 26 of the frame 1 is guided from the bottom rear back to the front at the level of the seat element 2 and forms a bracket 33 there, which surrounds the frame 1 at the front.
  • the spring element 13 is slidably mounted on the frame 1 in the area of the section 32 and the guide elements 6 are provided between the bracket 33 and the seat element 2 .
  • the bracket 33 is also connected to the frame 7 at the front in order to further increase stability.
  • FIG. 4a shows a front view of the item of seating furniture 103
  • FIG. 4b shows a side view of the item of seating furniture 103
  • FIG. 4a shows a front view of the item of seating furniture 103
  • FIG. 4b shows a side view of the item of seating furniture 103
  • FIG. 4a shows a front view of the item of seating furniture 103
  • FIG. 4b shows a side view of the item of seating furniture 103
  • the seating furniture 103 according to the fourth embodiment has an armrest 29 in contrast to the seating furniture 100 according to the first embodiment.
  • the armrest 29 is formed by a section 34 of the one-piece frame 7, which is guided upwards from a rear side on the floor and to the armrest 29 in the direction of the front of the seating furniture item 103 and is connected to the backrest 19 via a connecting means 60, in particular a screw can be, or alternatively, depending on the material stiffness, freely swinging without connection to the backrest 19 can stay.
  • a connecting means 60 in particular a screw can be, or alternatively, depending on the material stiffness, freely swinging without connection to the backrest 19 can stay.
  • FIGS. 13a to 13 A further variant of the chair 103 is shown in FIGS. 13a to 13 using a chair 112 according to a thirteenth embodiment variant.
  • FIG. 13a shows a front view of the item of seating furniture 112
  • FIG. 13b shows a side view of the item of seating furniture 112
  • FIG. 13a shows a front view of the item of seating furniture 112
  • FIG. 13b shows a side view of the item of seating furniture 112
  • Seating item 112 differs from seating item 103 only in that section 34 of one-piece frame 7, which forms armrest 29, is formed from frame 7 starting from a front side of seating item 112 and extends in the form of a loop to armrest 29 extended.
  • the backrest 19 represents an extension of the rear legs.
  • This section 34 of the frame 7 can in turn be connected to the backrest 19, or alternatively, depending on the rigidity of the material, can also be made to swing freely. This creates a spring effect between armrest 29 and backrest 19, which can further improve the comfort of seating furniture 112.
  • FIG. 5a to 5c a piece of seating furniture 104 according to a fifth embodiment of the invention is shown.
  • FIG. 5a shows a front view of seating furniture 104
  • FIG. 5b shows a side view of seating furniture 104
  • FIG. 5c shows a plan view of seating furniture 104.
  • Seating furniture 104 is designed as a chair 204.
  • the frame 1 of the piece of seating furniture 104 has a front part 35 , a back part 36 and an arm part 37 .
  • the front part 35 is used for the displaceable mounting of the holding means 12.1, which is designed as a spring element 13 or as a compression spring 14 made of elastomer.
  • the three guide means 6 are also provided on the front part 35 and are designed as elastomeric spring joints 11 .
  • the back part 36 forms the backrest 19 and has a movable lumbar support 20 .
  • the arm part 37 in turn forms the armrest 29 and is connected to the back part 36 and the front part 35 .
  • horizontal cross braces 38 are provided between the two sides of the arm part 37 for stabilization.
  • the arm part 37 can be connected via a connecting means 60, in particular a screw.
  • FIG. 6a shows a front view of the item of seating furniture 105
  • Fig. 6b shows a side view of the item of seating furniture 105
  • Fig. 6c shows a top view of the item of seating furniture 105.
  • the seating furniture 105 is designed as an office chair or swivel chair 300 .
  • the piece of seating furniture 105 has a frame 1 with a rotary foot 39 and a column 40 that can be adjusted in height.
  • the frame 1 has a seat part 41, which forms a backrest 19 and is connected to the height-adjustable column 40 via a swivel joint 42, the swivel joint 42 allowing the seat part 41, and thus the backrest 19, to be tilted relative to the swivel base 39.
  • An arm part 43 which is connected to the swivel joint 42 and to the seat part 41 in the area of the backrest 19 also forms an armrest 29 .
  • the arm part 43 is connected via a lever with a spring to a toothed wheel of the swivel joint 42, which has not been shown in detail in the figures.
  • a lever with a spring By pulling up the arm part 43, predetermined tilting positions of the seat part 41 can be selected.
  • the arm part 43 together with the lever is automatically pulled down by the spring and fixes the selected tilting position or engages in the gear wheel of the swivel joint, so that further adjustment is prevented.
  • An adjustment mechanism that can be operated via the arm part 43 for tilting the seat part 41 can thus be created.
  • the seating element 2 is in turn, as already described above for the seating furniture item 100 according to the first embodiment variant in FIGS.
  • the guide element 6 has an elastomeric spring joint 11 on each side of the chair 105 , which also acts as a holding means 12 .
  • the explanations for the first embodiment variant are made to the explanations for the first embodiment variant.
  • the piece of seating furniture has a holding means 12.3, which has an adjustable spring element 13.2 with a compression spring 14.2.
  • the spring force or spring constant of the compression spring 14.2 can be adjusted by the adjustable spring element 13.2 and thus change the hardness or strength of the rocking effect of the seat element 2.
  • the rocking effect of the seat element 2 can be coupled to a certain degree with the position or inclination of the backrest 19 and can thus be adapted to the respective sitting position of the person.
  • FIG. 7a to 7c a piece of seating furniture 106 according to a seventh embodiment of the invention is shown.
  • Fig. 7a shows a front view of seating furniture 106
  • Fig. 7b shows a side cross-sectional view of seating furniture 106
  • Fig. 7c shows a plan view of seating furniture 106.
  • the seating furniture 106 is designed as a theater or cinema chair 400.
  • the frame 1 of the piece of seating furniture 106 has side parts 44 and a back part 45 , the back part 45 forming the backrest 19 .
  • the frame 1 has an arm part 46 which is mounted on the right-hand side part 44 and forms an armrest 29 on the right-hand side of the seating furniture item 106 .
  • the armrest 29 is also equipped with an armrest limiter 47 which clearly assigns the armrest 29 to an item of seating furniture 106 and prevents the armrest 29 from being used by a person on an adjacent item of seating furniture 106 on the right.
  • the armrest limitation 47 ensures that each item of seating furniture 106 has an undivided armrest 29 .
  • the side of the armrest 29 and the armrest limit 47 in each row can be used to control the direction in which people lean, since they tend to do so to lean towards the armrest border 47 side.
  • the side on which the armrest border 47 and the armrest 29 are provided in each row alternate rows can be created in which people lean to the left and to the right.
  • the rows of seating furniture 106 do not have to be staggered, but can be placed directly one behind the other in a regular pattern, whereby the number of seats can be increased.
  • the piece of seating furniture 106 has a bearing 22.1 as a guide means 6.2, which serves to mount the seat element 2 on the frame 1 and is designed as a radial bearing 23.1. Due to the radial bearing 23.1, the seat element 2 can rotate freely about the axis of rotation 15 and can thus be shifted from a folded-up rest position 48 into a folded-out operating position 49.
  • FIG. 7b also shows that the piece of seating furniture 106 has padding 61 on its seat surface element 2.
  • FIG. Such padding can also be on the armrests 29 and the backrest 19 can be provided, but this has not been shown in detail in the figures.
  • the seat element 2 In the operating position 49, the seat element 2 is aligned essentially horizontally and is ready to receive a seated person on the seat 5. In the folded-up rest position 48, the seat element 2 is essentially in a vertical position and can thus create space in front of the piece of seating furniture 106 in order to make it easier for people to walk past.
  • the radial bearing 23.1 is also itself slidably mounted in a linear guide 50, with the radial bearing 23.1 being in the operating position 49 at the end of the linear guide 50 in the direction of the front side 9 of the seat element 2 and in the rest position 48 at the end of the linear guide 50 in Is towards the back 8 of the seat element.
  • the linear guide 50 can be spring-loaded, so that the radial bearing 23.1 with the seat element 2 is automatically shifted from the operating position 49 to the rest position 48 when it is folded up.
  • the radial bearing 23.1 can also be rigidly connected to the frame 1 without a linear guide 50 being provided for the displaceable mounting of the radial bearing 23.1.
  • This displacement of the radial bearing 23.1 along the linear guide 50 can further increase the space in front of the seating furniture item 106, since moving back the folded-up seat surface element 2 frees up space in front of the seating furniture item 106.
  • the number of rows of seats can be increased by about 10%.
  • the piece of seating furniture 106 also has a holding means 12.4, which has an adjustable spring element 13.3.
  • the spring element 13.3 is designed as a leaf spring 51 and has several spring leaves 52 which interact to generate the spring force. By changing the distance between the spring leaves 52, the hardness or strength of the spring element 13.3 can be adjusted and the rocking effect can thus be adjusted to different people.
  • the spring leaves 52 can be made of wood, metal or plastic.
  • the spring leaves are connected to an adjusting element in such a way that turning or actuating the adjusting element increases or decreases the distance between the spring leaves and thus changes the spring force of spring element 13.3, which is only indicated in FIGS. 7a to 7b.
  • FIG. 8a shows a front view of seating furniture 107
  • Fig. 8b shows a side cross-sectional view of seating furniture 107
  • Fig. 8c shows a top view of seating furniture 107.
  • FIGS. 7a to 7c which can also be used for seating furniture 107 according to the eighth embodiment variant, unless otherwise described below.
  • the same reference symbols designate the same features in each case.
  • the seating furniture 107 is designed as a wall-mounted theater or cinema chair 401.
  • the frame 1 of the chair 107 has side parts 53 and a back part 54 , the back part 54 forming the backrest 19 .
  • Armrests 29 are also formed on the side parts 53 of the frame 1 .
  • the frame 1 of the chair 107 also has wall brackets 55 which are connected to the side parts 53 and are used to attach the chair 107 to a wall.
  • the piece of seating furniture 107 also has a bearing 22.1 as a guide means 6.2, which serves to mount the seat surface element 2 on the frame 1 and is designed as a radial bearing 23.1. Due to the radial bearing 23.1, the seat element 2 can be shifted from a folded-up rest position 48 into a folded-out operating position 49, as previously described for the piece of seating furniture 106.
  • the radial bearing 23.1 sits rigidly in the frame 1, as a result of which the folded-up rest position 48 is not shifted in the direction of the rear side 8, but the seat element 2 is in the folded-up resting position 48 is at the front end of the seat 107 .
  • FIGS. 9a to 9c show a piece of seating furniture 108 according to a ninth embodiment variant of the invention and FIGS. 10a to 10c show a piece of seating furniture 109 according to a tenth embodiment variant of the invention, wherein FIGS. 9a and 10a show front views, FIGS. 9b and 10b side views and FIGS. 9c and 10c top views of the seating furniture 108 and 109.
  • the seating furniture 108 and 109 are each designed as folding chairs 500, 501, the frame 1 being formed by frame parts 56 which are each connected via radial bearings 57 so that the frame parts 56 can be rotated in relation to one another.
  • a radial bearing 23.2 is also provided between seat element 2 and frame 1 as bearing 22.2 and guide element 6.3, so that seat element 2 can rotate freely about axis of rotation 15 and allows movement in the vertical direction 10 in the area of rear side 8 of seat element 2 becomes.
  • a holding means 12.1 with an elastomeric compression spring 14 as a spring element 13 is displaceably mounted on a frame part 56.
  • the seating furniture 108 according to the ninth embodiment also has a further frame part 56 on which an armrest 29 is formed.
  • FIG. 11a to 11c show a piece of seating furniture 110 according to an eleventh embodiment of the invention, which is designed as a chair 205.
  • Fig. 11a shows a front view
  • Fig. 11b a side view
  • Fig. 11c a top view of the seating furniture item 110.
  • the seating furniture 110 according to the eleventh embodiment variant has, in contrast to the seating furniture 100 according to the first embodiment variant, a frame 1 which is composed of a plurality of frame parts 56 rigidly.
  • the frame parts 56 can be made of wood, metal, plastic, etc. and can be connected to one another in a positive and/or non-positive manner.
  • An elastomeric spring joint 11 is again used as the guide element 6 in the seating furniture item 110, which at the same time acts as a holding means 12, as was previously described for the seating furniture item 100 according to the first embodiment variant.
  • the guide element 6 has three of the elastomeric spring joints 11 which are distributed over the front side 9 of the seat element 2 in order to connect it to the frame 1 .
  • the piece of seating furniture 110 also has a holding means 12.5, which consists of three spring elements 13.4.
  • the spring elements 13.4 are each designed as torsion springs 57 and are distributed over the front side 9 of the seat element 2 in order to generate a counterforce on the seat element 2 in the region of its rear side 8.
  • the torsion springs 57 are connected to the seat surface element 2 on the one hand and to the frame 1 on the other hand.
  • a piece of seating furniture 111 according to a twelfth embodiment of the invention is shown.
  • Fig. 12a shows a front view of the item of seating furniture 111
  • Fig. 12b shows a side view of the item of seating furniture 111
  • Fig. 12c shows a top view of the item of seating furniture 111.
  • the seating furniture 111 is designed as an office chair or swivel chair 301. Reference is made here to the above description of seating furniture 105 based on FIGS. 6a to 6c, which also show an office chair or swivel chair 301, which can also be used for seating furniture 111 according to the twelfth embodiment variant, unless otherwise described below.
  • the same reference symbols designate the same features in each case.
  • the seating furniture 111 has no backrest and no armrests, but is equipped with a stomach rest 58.
  • the stomach rest 58 is arranged on the front side of the piece of seating furniture 111 and is suitable for providing support for a person's upper body in the region of the stomach.
  • the seat surface element 2 is in turn connected to the seat part 41, ie to the frame 1, via a guide element 6.4.
  • the guide element 6.4 has a bearing 22.3, which is designed as a radial bearing 23.3 and thus makes the seat element 2 freely rotatable about the axis of rotation 15 and enables a movement in the vertical direction 10 in the area of the rear side 8 of the seat element 2.
  • the chair 111 has a holding means 12.6, which consists of a
  • Spring element 13.5 consists.
  • the spring element 13.5 is in turn a torsion spring 57.1 designed to generate a counterforce on the seat element 2 in the area of its rear side 8 .
  • the torsion spring 57.1 is connected to the seat surface element 2 on the one hand and to the seat part 41 of the frame 1 on the other hand.
  • the torsion spring 57.1 can also be used as a holding means 12.6, after appropriate dimensioning, in other design variants of the seating furniture item.

Abstract

L'invention concerne un meuble d'assise (100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112) comprenant un cadre (1) et un élément de surface d'assise (2) qui forme une surface d'assise (5) sur une face supérieure (3) et qui présente une face avant (9) et une face arrière (8). L'objectif de l'invention est d'améliorer l'ergonomie du meuble d'assise et d'offrir une position assise ergonomique. À cet effet, l'élément de surface d'assise (2) est relié au cadre (1) par l'intermédiaire d'au moins un élément de guidage (6, 6.1, 6.2, 6.3, 6.4) de telle sorte que la face arrière (8) de l'élément de surface d'assise (2) est mobile dans une direction verticale (10), le meuble d'assise (100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112) ayant un moyen de maintien (12, 12.1, 12.2, 12.3, 12.4, 12.5, 12.6) pour exercer une force de maintien sur l'élément de surface d'assise (2) dans la direction verticale (10).
PCT/EP2022/080313 2022-02-06 2022-10-28 Meuble d'assise comportant un cadre et un élément de surface d'assise WO2023147902A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT600232022 2022-02-06
ATA60023/2022 2022-02-06

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WO2023147902A1 true WO2023147902A1 (fr) 2023-08-10

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US288608A (en) * 1883-11-13 Spring-seat
FR718865A (fr) * 1931-06-19 1932-01-29 Fauteuil tournant à siège abattant pour salles de spectacle ou autres lieux à espace réduit
WO2002060299A1 (fr) 2001-01-31 2002-08-08 Radmilo Eric Chaise d'usage general, auto-ajustable, avec tablette de siege en porte-a-faux fixee sur le cote avant du siege
US20050179293A1 (en) * 2002-10-29 2005-08-18 Wilcox Jeffrey S. Seat suspension

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US288608A (en) * 1883-11-13 Spring-seat
FR718865A (fr) * 1931-06-19 1932-01-29 Fauteuil tournant à siège abattant pour salles de spectacle ou autres lieux à espace réduit
WO2002060299A1 (fr) 2001-01-31 2002-08-08 Radmilo Eric Chaise d'usage general, auto-ajustable, avec tablette de siege en porte-a-faux fixee sur le cote avant du siege
US20050179293A1 (en) * 2002-10-29 2005-08-18 Wilcox Jeffrey S. Seat suspension

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