EP3843588A1 - Dossier, en particulier pour un siège - Google Patents

Dossier, en particulier pour un siège

Info

Publication number
EP3843588A1
EP3843588A1 EP19762125.3A EP19762125A EP3843588A1 EP 3843588 A1 EP3843588 A1 EP 3843588A1 EP 19762125 A EP19762125 A EP 19762125A EP 3843588 A1 EP3843588 A1 EP 3843588A1
Authority
EP
European Patent Office
Prior art keywords
support
backrest
thoracic
backrest according
web
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.)
Granted
Application number
EP19762125.3A
Other languages
German (de)
English (en)
Other versions
EP3843588B1 (fr
Inventor
Joachim Grifka
Johann Tomforde
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.)
Teamobility GmbH
Original Assignee
Teamobility GmbH
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
Priority claimed from DE102018121143.0A external-priority patent/DE102018121143A1/de
Priority claimed from DE102018122906.2A external-priority patent/DE102018122906A1/de
Application filed by Teamobility GmbH filed Critical Teamobility GmbH
Publication of EP3843588A1 publication Critical patent/EP3843588A1/fr
Application granted granted Critical
Publication of EP3843588B1 publication Critical patent/EP3843588B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/405—Support 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—Support for the head or the back
    • A47C7/40—Support 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—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs

Definitions

  • the invention relates to a backrest, in particular for a seat.
  • a backrest which essentially corresponds to a course of the spine and enables the user to sit comfortably.
  • a lumbar support is usually provided, which acts in the pelvic area and in the lumbar spine.
  • a thoracic support for a backrest is known from DE 10 2014 112 339 A1.
  • This thoracic support is located on the backrest surface, on the side facing the user.
  • This thoracic support is essentially designed as a plate or disk which has a V-shape in the central region which delimits an upper edge of the thoracic support.
  • Such a thoracic support acts as a thoracic spine support.
  • the invention has for its object to provide a backrest, in particular for a seat, with a thoracic support, which enables improved support of the upper body for the user of a seat.
  • a backrest with a backrest structure which comprises a covering or upholstery which form a backrest surface, and with a thoracic support which has two plate-shaped support surfaces which are separate from one another.
  • This thoracic support enables the spine to be relieved individually, since this thoracic support particularly supports the weight of the user's upper body. This reduces or prevents back pain from prolonged use of the seat. Due to the plate-shaped support surfaces, which are formed separately from each other, each support surface can act individually as a thoracic vertebral support, in particular if the user changes his sitting position only slightly.
  • the support surfaces of the thoracic support are preferably designed in mirror image to a longitudinal extension of the thoracic support. This symmetry allows the support surfaces on the left and right side of the spine of the user to have the same effect.
  • the support surfaces of the thoracic support are preferably adjustable in height to the backrest structure. These can be designed to be adjustable in height independently of one another and can also be arranged to be adjustable in height on the backrest structure. Furthermore, the support surfaces of the thoracic support can preferably be set at a distance from one another.
  • Each support surface is preferably provided on its own joint, and each joint is connected to a fastening plate which is fastened to the backrest structure. This enables the two support surfaces to be able to exert flexibility or pivoting or rotating movement independently of one another through the joint.
  • a so-called Dondola joint is preferably provided as the joint, which enables the support surface to wobble around the point of application on the joint. During the wobble movement, this joint can have almost the same resistance. This leads to a pleasant feeling of sitting on the one hand and an active support effect on the other.
  • the two support surfaces can be provided at a distance from one another directly on a common fastening plate.
  • the distance between the two support surfaces is slightly larger than the width of a spine, so that the spine can be positioned between the two support surfaces without support.
  • the fastening plate is preferably provided on the backrest structure via a joint.
  • the support surfaces are provided on a common support surface receptacle which can be fastened to the fastening plate via a joint or can be received directly by the fastening plate.
  • the fastening plate in turn can be provided directly or via a joint on the backrest structure.
  • a support surface receptacle is advantageous which enables the support surface to be supported over a large area.
  • the support surface receptacle is preferably larger in area than the fastening plate, as a result of which an improved support effect is achieved.
  • the support surface preferably has a parallelogram-shaped or oval base surface, wherein a V-shaped or V-shaped widening is formed between the two support surfaces facing the shoulder support.
  • the support surface of the thoracic support is preferably made of a foam material or at least one fluid cushion.
  • This fluid cushion can be filled with a gel or a gas, in particular air.
  • the support surface can be provided from one or more fluid cushions lined up or nested in one another. In the case of a plurality of fluid cushions which form a common support surface, these fluid cushions can also be designed differently when filled with the fluid, in order in this way in turn to enable a specific adaptation to support the vertebral joints.
  • the support surfaces of the thoracic support rest or engage on a rear side of the covering.
  • a simple and constructive structure can be provided when using a covering, in particular a network covering, which is held open by the backrest structure.
  • the support surfaces of the thoracic support can be provided within a backrest padding.
  • Such upholstery can be provided in a chair, in particular a work chair, dining room chair or the like.
  • Such upholstery can also be provided for a backrest of a vehicle seat. Due to the positioning of the support surfaces of the thoracic support within the padding, it is not visible from the outside. Nevertheless, this can preferably be adjusted in height to the size of the user and / or the support surfaces can also be adjusted at a distance from one another. Such an adjustment can be motor-assisted.
  • each support surface in a seat, in particular a vehicle seat can be individually driven by a motor. The height of both support surfaces can also be controlled simultaneously by means of a motor.
  • the backrest structure is preferably provided in the form of a frame construction.
  • a frame construction can be provided in the design of a work chair or vehicle seat.
  • the backrest structure can also be designed as a bionic skeleton, which has at least one web running in the vertical direction, which has upper wings projecting laterally at its upper end as a shoulder support and wings projecting laterally in the central region as a thoracic vertebral support.
  • This bionic skeleton enables considerable weight savings for the design of the backrest.
  • an ergonomic arrangement of the covering can be created.
  • the wing can create a thoracic vertebral support in the central area, through which the weight of the user's upper body can be easily absorbed.
  • laterally projecting wings are provided as a support in the transition from the lumbar spine to the thoracic spine. An additional support effect can thereby be achieved.
  • the web of the backrest structure ends in the lordosis area.
  • the backrest is arranged separately from the seat.
  • the backrest can also be adjusted in height to the seat, regardless of the seat, which provides additional comfort.
  • the web on the lumbar region can have a connection section that can be coupled to, connected to, or directly merges into the seat surface.
  • the coupling or the direct connection of the web of the bionic skeleton to the seat surface can be advantageous.
  • the wings of the bionic skeleton are preferably provided in pairs and opposite one another on the web. These can be molded directly onto the at least one web. These can also be attached to it by a permanent or detachable connection. In particular, these have a curved course which corresponds to the course of the ribs starting from the spine up to a lateral region of the ribs. As a result, a lateral guide for the user can be created on the back surface.
  • the wings can also have a straight course.
  • the skeleton is made of a fiber composite material, in particular in one piece.
  • This fiber composite material which consists for example of glass fibers, carbon fibers, Kevlar fibers or one or more fabric layers made of the above-mentioned fibers, has a low weight.
  • high stability can be provided.
  • a desired flexibility can be created by selecting the number of fiber layers differently, for example in order to achieve a stiffer design of the web in the pelvic and lumbar region than in the shoulder region.
  • fastening and / or guide elements are provided at the outer end of the middle wing in the thoracic vertebra area, by means of which the bionic skeleton is arranged in a support structure of a rotating arrangement in a driver's cab of a vehicle and is preferably adjustable in height.
  • This support structure can have a lower connection point on the floor or chassis of the vehicle and an upper connection point on the roof, as a result of which the support structure is rotatably mounted about an axis formed between the upper and lower connection points.
  • This support structure can comprise a support frame in which the bionic skeleton is guided and / or fastened. This arrangement enables rapid entry and exit in such a vehicle.
  • the bionic skeleton can be provided on the support structure independently of the seating surface, which has a closed frame in the form of a preferably O-shaped frame.
  • the outer ends of the middle wings can engage and be fixed in vertical sections of this support frame of the support structure.
  • a connection section is provided at a lower end of the at least one web running in the vertical direction, through which the bionic skeleton is coupled to a seat surface or to a seat skeleton.
  • the backrest is connected to the seat surface or the seat skeleton. If the seat height is adjusted, the backrest is automatically adjusted in height.
  • This arrangement is preferably provided for a chair, in particular an office chair or a dining room chair or the like.
  • the backrest provides the thoracic support on the web of the bionic skeleton.
  • This thoracic support can be positioned outside the covering.
  • the thoracic support rests on a back of the covering or is positioned at a distance from this rear of the covering. If the user takes a sitting position, the support effect can be achieved.
  • the support surfaces of the thoracic support are preferably designed to be mirror images of the web. This symmetry allows the support surfaces on the left and right side of the spine of the user to have the same effect.
  • Each support surface is preferably provided on its own joint, and each joint is connected to a fastening plate which is fastened to the web. This enables the two support surfaces to be able to exert flexibility or pivoting or rotating movement independently of one another through the joint.
  • a so-called Dondola joint is preferably provided as the joint, which enables the support surface to wobble around the point of application on the joint. During the tumbling movement, this joint can have almost the same resistance. This leads to a pleasant feeling of sitting on the one hand and an active support effect on the other.
  • the two support surfaces are provided at a distance from one another directly on a common fastening plate.
  • the distance between the two support surfaces is slightly larger than the width of a spine, so that the spine can be positioned between the two support surfaces without support.
  • the fastening plate is provided via a joint on the at least one web running in the vertical direction.
  • a further advantageous embodiment of the thoracic support provides for the height to be adjustable along the web.
  • the fastening plate is preferably arranged to be displaceable along the web. This allows an individual adjustment to the size of the user.
  • the support surface preferably has a parallelogram-shaped or oval base surface, wherein a V-shaped widening is formed between the two support surfaces facing the shoulder support.
  • the support surface of the thoracic support is preferably made of a foam material or at least one fluid cushion.
  • This fluid cushion can be filled with a gel or a gas, in particular with air.
  • FIG. 1 shows a perspective view from the front of a backrest
  • FIG. 2 shows a schematic side view of the backrest according to FIG. 1,
  • FIG. 3 shows a perspective view from behind of the backrest according to FIG. 1,
  • FIG. 4a shows a schematic side view of a thoracic support for FIG. 1,
  • FIG. 4b shows a schematic view from above of the thoracic support according to FIG. 4a
  • FIG. 5 shows a schematic view of an alternative thoracic support according to FIG. 4,
  • FIG. 6 shows a front view of the backrest according to FIG. 1 in a rotatable supporting structure
  • FIG. 7 shows a schematic side view of the support structure according to FIG. 6,
  • FIG. 8 shows a schematic view from behind of the support structure according to FIG. 6,
  • FIG. 9 shows a perspective view of the support structure according to FIG. 6,
  • Figure 10 is a schematic view of a chair with the backrest according to Figure 1, and
  • FIG. 11 shows a schematic view of an alternative thoracic support on a chair for FIG. 10.
  • a backrest 56 is shown in perspective in FIG. This backrest 56 is provided for a seat or a chair.
  • the backrest 56 can be used for an office chair, work chair or the like.
  • the backrest 56 can preferably be provided for a driver's seat or vehicle seat 12, which is shown by way of example in FIGS. 6 to 8.
  • the backrest 56 comprises a backrest structure 76 which is designed as a bionic skeleton.
  • This bionic skeleton 76 receives a covering 79 as a seat cover.
  • This covering 79 can be a mesh covering consisting of plastic or a textile material.
  • the covering can also consist of a fabric.
  • the backrest structure 76 can also be designed as a frame construction. With such a frame construction, a covering can also be provided.
  • the frame structure can also be at least partially or completely surrounded by padding, so that the frame structure of the backrest structure is not directly visible from the outside.
  • the bionic skeleton 76 comprises a web 78 running in the vertical direction. Alternatively, a plurality of webs running in the vertical direction can also be provided. On this web 78 laterally projecting wings 77, 83, 85 are provided, which can be provided in an application-specific manner in terms of number, shape and / or position.
  • the web 78 has a curved, in particular S-shaped, course. This course can be adapted to the course of the spine. Alternatively, the web 78 can also have a straight course.
  • lateral wings 83 are provided, which form a shoulder support.
  • central wings 77 are provided which extend laterally.
  • These wings 77 preferably extend laterally outwards to a greater extent than the upper wings 83.
  • further wings 85 are provided in the lower region of the web 78, in particular the lumbar region. These wings serve to receive the covering 79 or a padding, so that it can extend from the shoulder area over the middle area to the lumbar area.
  • the bionic skeleton 76 can be formed in one piece.
  • the web can also have a plurality of assembly positions for attaching the wings 83, 77, 85.
  • the wings 83, 77, 85 are preferably arranged and formed as a mirror image of the web 78.
  • the wings 83, 77, 85 are preferably strut-shaped or flat rectangular. These preferably taper towards the free end.
  • a holder for receiving the covering 79 can be provided at the respective free end of the wings 63, 77, 85.
  • the wings 83, 77, 85 have different lateral extensions and different curvatures in the direction of the seat surface or seated position of the user.
  • the middle wings 77 are provided with the greatest lateral extension and at least in the end region with a curvature.
  • improved support and / or increased backrest area can be achieved via the covering.
  • the upper wings 83 can be shorter in the lateral extent than the middle wings 77. If the lower wings 85 are provided, they can correspond to the lateral extension of the upper wings 83 or can be made slightly larger. In any case, these are shorter than the middle wings 77.
  • a thoracic support 92 can be provided on the backrest 56.
  • a guide 91 is provided on the web 78, through which the thoracic support 92 can be fastened to the web 78.
  • the guide 91 can have an elongated slot in the web 78, through which a holding element 89 provided on a fastening plate 95 can be guided and can be fastened with a hand rotary knob 96.
  • the guide 91 can also encompass the web 78 and comprise a releasable clamp connection or latching connection which engages on the web 78.
  • a locking rail with a plurality of locking positions or a clamping strip can be provided between the support surfaces 93 and the web 78.
  • the height of the thoracic support 92 is preferably adjustable.
  • the thoracic support 92 comprises two support surfaces 93 which are preferably symmetrical to the web 78. These support surfaces 93 can preferably be deflected independently of one another.
  • FIG. 2 shows a schematic side view of the backrest 56 of FIG. 1.
  • the support surface 93 of the thorax support 92 is connected by a joint 94 to a fastening plate 95, which in turn can be fastened to the web 78 in particular by means of a handwheel or a rotary knob.
  • FIG. 3 shows a perspective view from behind of the backrest 56 according to FIG. 1. This view shows that the support surfaces 93 are provided as a mirror image of the web 78, for example between the middle wings 77 and the upper wing 83. The support surfaces 93 can also be moved downward so that they can act in the area of the middle wings 77.
  • the web 78 preferably extends beyond the upper wings 83 and accommodates a headrest.
  • This headrest 80 is advantageously adjustable in height.
  • the thoracic support 92 is preferably positioned between the web 78 and the covering 79. This can be seen particularly in FIG. 2. As a result, the thorax support 92 can optionally be used on the backrest 56.
  • the support surfaces 93 of the thoracic support 92 engage on a rear side of the covering 79 or are positioned at a distance therefrom, so that when the user assumes a seating position, the covering 79 bears against the supporting surfaces 93 and these support the user.
  • FIG. 4a shows a side view of the thorax support 92 according to FIG. 3 and FIG. 4b shows a view from above of the thorax support 92.
  • Each support surface 93 is provided independently of the other on a joint 94, which are connected to the mounting plate 95. As a result, each support surface 93 is designed to be flexible, independently of the other. Alternatively, each support surface 93 can also be provided on the fastening plate 95 in a fixed or non-articulated manner.
  • the fastening plate 95 lies against the web 78 of the backrest structure 76 or engages around the web 78 or engages in the web 78 in order to fasten the thoracic support 92 thereon.
  • a height adjustment can preferably be provided by means of a releasable connecting element, in particular a hand knob 96. Alternatively, an electric drive for height adjustment of the mounting plate 95 relative to the web 78 can also be provided.
  • a hinge 94 can also be provided between the fastening plate 95 and a holding element 89, which is provided on the releasable connecting element, in particular a hand rotary knob, or the drive for height adjustment.
  • the support surfaces 93 are designed in the form of a parallelogram. This alignment of the support surfaces 93 with respect to one another has a V-shaped widening up to an upper edge 97. This upper edge 97 and an outer side edge 98 of the respective support surface 93 meet in an upper corner area at an angle of less than 90 °.
  • the support surfaces 93 are preferably formed over the entire surface. Viewed in cross section, these can increase slightly in thickness outwards, preferably towards at least one outer side edge of the support surface 93.
  • the support surfaces 93 can be formed from its foam material. Fluid cushions with a gel or gaseous filling can also be provided.
  • the support surfaces 93 preferably comprise a carrier, in particular a holding plate, to which the foam material, the at least one fluid cushion or the like are permanently or interchangeably attached.
  • the support surfaces 93 can be mounted on the fastening plate 95, plugged on and / or clipped on. Holding plates for the support surfaces 93 and the fastening plate 95 can also be formed in one piece.
  • the mutually arranged support surfaces 93 preferably have a butterfly-shaped contour.
  • FIG. 5 shows a schematic side view of an alternative embodiment of the thoracic support 92.
  • the support surfaces 93 are each provided separately on a common fastening plate 95.
  • a distance is provided between the support surfaces 93 that is slightly wider than a spine, so that the support surfaces 93 engage the thoracic vertebrae, but not the spine when sitting upright.
  • the fastening plate 95 can be adapted in geometry or shape to the geometry of the support surface 93, the surface sections of the fastening plate 95 which bear against the back of the support surface 93 preferably being smaller or set back with respect to the outer edges of the support surfaces 93.
  • the support surfaces 93 can rest directly on the fastening plate 95.
  • a joint 84 can be provided between the holding element 89 and the fastening plate 95, so that the fastening plate 95 is mounted in a wobbling manner in relation to the web 78.
  • FIG. 6 shows a view from the front of a further embodiment of the rotating arrangement 35 with the above-described backrest 57 and thorax support 92.
  • FIG. 7 shows a side view
  • FIG. 8 shows a rear view of
  • FIG. 9 shows a perspective view of the rotary arrangement 35 according to FIG. 6.
  • This rotary arrangement 35 comprises a support structure 54, which is designed as a closed support frame 41.
  • the support frame 41 preferably has columns 61, 62 formed from profiles. These can be curved. In particular, lightweight profiles are provided.
  • These columns 61, 62 which extend laterally along the vehicle seat 12, merge into a common pivot bearing 66 at the lower connection point 18.
  • the columns 61, 62 merge at the upper connection point 19 into a cross member 102, on which an upper pivot bearing 67 of the upper connection point 19 is provided.
  • the columns 61, 62 can also merge into a common pivot bearing 67 at the upper connection point 17.
  • This pivot bearing 66, 67 is provided in a fixed position on the driver's cab.
  • the columns 61, 62 form a closed support frame 41.
  • This support frame 41 can have an oval-shaped contour when viewed from the front.
  • the columns 61, 62 expand and merge into a seating area 101.
  • the seating area 101 extends at least from the seating surface 57 to the upper end of the backrest 56 or to the headrest 59.
  • the columns 61, 62 run parallel in the central area of the support frame 41.
  • the seat surface 67 can be received laterally on the columns 61, 62.
  • the seat surface 57 is adjustable in height along the columns 61, 62.
  • the parallel sections of the columns 61, 62 are preferably arranged laterally to the seat surface 57.
  • the columns 61, 62 are preferably connected to the seat surface 57 in the rear lateral region of the seat surface 57, preferably by guide elements.
  • the columns 61, 62 are inclined towards one another, starting from the parallel sections of the columns 61, 62.
  • the upper ends of the columns 61, 62 may preferably merge into an upper pivot bearing 67 or be fastened to the cross member 102.
  • the support frame 41 is inclined in a side view of the support structure 54 with respect to the common axis 19.
  • the inclination of the lower section of the columns 61, 62 and the parallel sections of the columns 61, 62 preferably extends to the height of the headrest 59.
  • This inclination preferably extends from the lower end of a foot region 105 or a lower connection point 18 to the upper end of the Seat area 101.
  • the upper end of the seat area 101 can be the upper end of the backrest 56 or can also include the headrest 59.
  • This is preferably followed by a curvature 103, as a result of which the upper sections of the columns 61, 62 are inclined opposite to the lower part of the columns 61, 62 in order to merge into the upper connection point 18.
  • a damping device 68 is provided between the seat surface 57 and the rotary bearing 66.
  • This damping device 68 is preferably adjustable in height relative to the pivot bearing 66.
  • a first joint 69 is provided between the rotary bearing 66 and the damping device 68.
  • a second joint 71 is provided, which connects the damping device 68 to the seat surface 57, in particular a seat skeleton 63 of the seat surface 57.
  • the second joint 71 can be designed as a so-called Dondola joint.
  • the second joint 71 can preferably be deflected in all spatial directions. As a result, the seat surface 57 can be mounted in a tumbling manner to the damping device 68.
  • the seat surface 57 is preferably arranged to be longitudinally displaceable and / or adjustable in inclination to the seat skeleton 63.
  • This longitudinal displaceability is represented by arrow 73 in FIG. 11 and is made possible by a guide.
  • the seat surface 57 is also guided laterally via a guide 74 on the columns 61, 62 of the support frame 41.
  • the guide 74 can be provided as a separate guide rail on the columns 61, 62.
  • the pillars 61, 62 can have a profile in which the guide rail is integrated.
  • Guide elements are preferably provided on the seat skeleton 63 of the seat surface 57, which engage in the guide rail of the guide 74 on the columns 61, 62.
  • the seat 12 preferably comprises the backrest 56. According to a first embodiment, this can be coupled to the seat surface 57. When the seat 57 is adjusted in height, the backrest 56 is automatically adjusted. If the backrest 56 is coupled to the seat surface, in particular via a connection section 60, the backrest 56 can be provided without guidance to the columns 61, 62. This enables a large adjustment range for the backrest 56.
  • the backrest 56 is preferably decoupled from the seat surface 57. In this case, the backrest 56 is likewise guided with a guide 74 on the columns 61, 62.
  • the backrest 56 can be adjustable independently of the seat 57. This allows individual adaptation to people of different sizes.
  • a chair 14 is shown as an example in FIG.
  • This chair 14 comprises the backrest 56 according to FIGS. 1 to 3.
  • the thoracic support 92 according to one of the above-described embodiments is preferably provided on this backrest 56.
  • the backrest 56 is received on a seat surface 57 or a seat skeleton 63 via a connection section 60 on the bionic skeleton 76.
  • the connection between the connection section 60 and the seat skeleton 63 or the seat surface 57 can preferably be articulated, so that the backrest 56 can be pivoted backwards.
  • the force for deflecting the backrest 56 to the rear can preferably be adjustable.
  • the backrest 56 can also be firmly locked in a defined position relative to the seat surface 57 by means of a locking mechanism (not shown in more detail).
  • armrests 81 and / or a headrest 59 can be provided adjacent to the seat 57.
  • This chair 14 has, for example, a chassis 99, in particular rollers.
  • a damping device 68 is provided between the chassis 99 and the seat surface 57 or the seat skeleton 63. At the same time, this includes a height adjustment.
  • FIG. 11 shows a perspective view of an alternative embodiment of a chair 14 to FIG. 10.
  • This embodiment differs in the design of the thoracic support 92 from the embodiment according to FIG. 10.
  • two support surfaces 93 are provided, which each have enlarged support surfaces 93 compared to the embodiment in FIG.
  • the support surfaces 93 are both arranged on a support surface receptacle 105.
  • This support surface receptacle 105 is, for example, in one piece and is preferably plate-shaped.
  • a recess 106 has the advantage that the support surface receptacle 105 has a lower weight.
  • the air circulation in this thoracic support 92 can also be improved.
  • This support surface receptacle 105 can be connected to the fastening plate 95 via at least one joint. This support surface receptacle 105 can also be attached directly to the fastening plate 95.
  • the fastening plate 95 can be fastened to the backrest structure 76 or connected to it in accordance with the above-described embodiments.
  • the support surfaces 93 are each formed from a fluid cushion.
  • the support surface 93 can also consist of several fluid cushions.
  • the filling medium and / or the degree of filling can vary from fluid cushion to fluid cushion. A uniform use of the fluid material and the filling pressure can also be used.
  • the above-described embodiments of the thoracic support 92 can relieve the spine when sitting.
  • This thoracic support 92 has the advantage over lordosis supports that better relief of the spine is achieved.
  • the thoracic support 92 which supports the area of the chest, causes an enlargement of the vertebral canal, relief of the small vertebral joints and an enlargement of the nerve exit holes of the lumbar spine, thereby avoiding overload and pain when sitting, especially when driving.
  • the thoracic support 92 can be attached to various types of chairs, such as an office chair, a dining room chair, or the like.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Seats For Vehicles (AREA)

Abstract

La présente invention concerne un dossier, en particulier pour un siège (12) ou une chaise (14), comprenant une structure d'appui (76) recevant un habillage (79) ou un rembourrage qui forment au moins une surface d'appui, et comprenant un soutien thoracique (92), le soutien thoracique (92) présentant deux surfaces de soutien (93) plates conçues séparément l'une de l'autre.
EP19762125.3A 2018-08-29 2019-08-29 Dossier, en particulier pour un siège Active EP3843588B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102018121143.0A DE102018121143A1 (de) 2018-08-29 2018-08-29 Rückenlehne, insbesondere für einen Sitz
DE102018122906.2A DE102018122906A1 (de) 2018-09-18 2018-09-18 Rückenlehne, insbesondere für einen Sitz
PCT/EP2019/073096 WO2020043827A1 (fr) 2018-08-29 2019-08-29 Dossier, en particulier pour un siège

Publications (2)

Publication Number Publication Date
EP3843588A1 true EP3843588A1 (fr) 2021-07-07
EP3843588B1 EP3843588B1 (fr) 2023-10-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19762125.3A Active EP3843588B1 (fr) 2018-08-29 2019-08-29 Dossier, en particulier pour un siège

Country Status (2)

Country Link
EP (1) EP3843588B1 (fr)
WO (1) WO2020043827A1 (fr)

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