EP3843588B1 - Dossier, en particulier pour un siège - Google Patents

Dossier, en particulier pour un siège Download PDF

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Publication number
EP3843588B1
EP3843588B1 EP19762125.3A EP19762125A EP3843588B1 EP 3843588 B1 EP3843588 B1 EP 3843588B1 EP 19762125 A EP19762125 A EP 19762125A EP 3843588 B1 EP3843588 B1 EP 3843588B1
Authority
EP
European Patent Office
Prior art keywords
seat back
support
seat
backrest
mounting plate
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.)
Active
Application number
EP19762125.3A
Other languages
German (de)
English (en)
Other versions
EP3843588A1 (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

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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—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.
  • Vehicle seats usually have lumbar support, which acts in the pelvic area and lumbar spine.
  • a thorax support for a backrest is known.
  • This thorax support is located on the backrest surface, on the side facing the user.
  • This thorax support is essentially designed as a plate or disk, which includes a V-shape in the middle region that delimits an upper edge of the thorax support.
  • Such a thorax support acts as a thoracic spine support.
  • a chair with a backrest is known.
  • This backrest includes a backrest structure that accommodates a covering.
  • a height-adjustable spine support is provided within the covering.
  • From the CN 204 467 516 U A chair with a two-part backrest is also known. Each half of the backrest is hinged to a horizontal mounting plate, which is adjustable in height.
  • An analogous structure is from the US 7,278,688 B1 known.
  • the invention is based on the object of creating a backrest, in particular for a seat, with a thorax 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 that forms a backrest surface, and with a thorax support, which has two separate plate-shaped support surfaces.
  • This thorax support can provide individual relief for the spine, as this thorax support particularly supports the weight of the user's upper body. This reduces or prevents back pain when using the seat for a long time. Due to the plate-shaped support surfaces, which are designed separately from one another, each support surface can act individually as a thoracic spine support, especially if the user changes his sitting position even slightly.
  • the geometry of the support surfaces of the thorax support is a mirror image of the longitudinal extent of the thorax support. This symmetry allows the support surfaces to have the same effect on the left and right sides of the user's spine.
  • the support surfaces of the thorax support are preferably adjustable in height relative to the backrest structure. These can be designed to be adjustable in height independently of one another or can be arranged together in a height-adjustable manner on the backrest structure. Furthermore, the support surfaces of the thorax support are preferably adjustable at a distance from one another.
  • Each support surface is preferably provided at a separate joint, and each joint is connected to a mounting plate that is attached to the backrest structure. This allows the two support surfaces to independently exert compliance or pivotal or rotational movement through the joint.
  • a so-called Dondola joint is preferably provided as the joint, which enables a tumbling movement of the support surface around the point of attack on the joint. During the tumbling movement, this joint can have almost equal resistance. This leads to a pleasant sitting experience on the one hand and an active supporting effect on the other.
  • the two support surfaces can be provided directly on a common fastening plate at a distance from one another.
  • the distance between the two support surfaces is slightly larger than the width of a spine, allowing the spine to be positioned between the two support surfaces without support.
  • the fastening plate is preferably provided via a joint on the backrest structure.
  • the support surfaces are provided on a support surface receptacle, which support surface receptacle can be attached 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 holder is advantageous, which enables the support surface to be supported over a large area.
  • the support surface receptacle is designed to be larger in area than the fastening plate, whereby an improved supporting effect is achieved.
  • the support surface preferably has a parallelogram-shaped or oval base surface, with a V-shaped or V-shaped, rounded widening being formed between the two support surfaces facing the shoulder support. This makes it possible for the spine and shoulder blades to move relatively freely and for the thorax support to rest underneath the shoulder blades and provide appropriate support.
  • the support surface of the thorax support is preferably made of a foam material or at least a 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 one inside the other. If there are several fluid cushions that form a common support surface, these fluid cushions can also be designed differently in terms of how they are filled with fluid, in order to enable a specific adjustment to support the vertebral joints.
  • the support surfaces of the thorax support rest or engage on a back side of the covering. This allows for a simple and constructive structure when using it a covering, in particular a mesh covering, can be provided, which is held spanned by the backrest structure.
  • the support surfaces of the thorax support can be provided within the upholstery of a backrest.
  • upholstery can be provided for a chair, in particular a work chair, dining chair or the like.
  • Such upholstery can also be provided on a backrest of a vehicle seat.
  • the height of this can preferably be adjusted 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 supported by motors.
  • each support surface in a seat, in particular a vehicle seat can be individually driven by a motor. Both support surfaces can also be controlled to be movable in height at the same time by means of a motor.
  • the backrest structure is preferably provided in the form of a frame construction.
  • a frame structure can be provided when designing 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 laterally projecting upper wings at its upper end as a shoulder support and laterally projecting wings in the middle area as a thoracic vertebra support.
  • This bionic skeleton enables significant weight savings for the design of the backrest.
  • an ergonomic arrangement of the covering can be created.
  • the wings in the middle area can create a thoracic spine support, through which the weight of the user's upper body can be easily absorbed.
  • Laterally projecting wings are preferred as supports in the lower region of the at least one web running in the vertical direction Transition from the lumbar spine to the thoracic spine is provided. This allows an additional supporting effect to be achieved.
  • the web of the backrest structure ends in the lumbar area.
  • the backrest is arranged separately from the seat. The backrest can therefore also be adjusted in height to the seat surface independently of the seat surface, which provides additional comfort.
  • the web can then have a connecting section on the lumbar region, which can be coupled to the seat surface, is connected to it or merges directly into the seat surface.
  • a connecting section on the lumbar region which can be coupled to the seat surface, is connected to it or merges directly into the seat surface.
  • the wings of the bionic skeleton are preferably provided in pairs and opposite each other on the web. These can be formed directly on 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 that corresponds to the course of the ribs starting from the spine to a lateral area of the ribs. This can create a side guide for the user on the back surface.
  • the wings can also have a straight course.
  • a further preferred embodiment of the backrest provides that 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 coverings made of the above-mentioned fibers, has a low weight.
  • a high level of stability can be provided.
  • a desired compliance can be created by selecting the number of fiber layers differently For example, to achieve a stiffer design of the bar in the pelvic and lumbar areas than in the shoulder area.
  • fastening and/or guide elements are provided at the outer end of the central wings in the thoracic vertebra area, through 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, whereby the support structure is rotatably mounted about an axis formed between the upper and lower connection points.
  • This support structure can include a support frame in which the bionic skeleton is guided and/or fastened. This arrangement enables quick entry and exit from such a vehicle.
  • the bionic skeleton can be provided independently of the seat on the support structure, which has a closed frame in the form of a preferably O-shaped frame.
  • the outer ends of the central wings can engage and be secured 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 or the seat skeleton. If the seat height is adjusted, the height of the backrest is also automatically adjusted.
  • 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 thorax support on the web of the bionic skeleton.
  • This thorax support can be positioned outside the covering.
  • the thorax support rests on the back of the covering or is connected to this back Covering positioned at a distance When the user assumes a sitting position, the supporting effect can be achieved.
  • the supporting surfaces of the thorax support are preferably designed to be mirror images of the web in terms of their geometry. This symmetry allows the support surfaces to have the same effect on the left and right sides of the user's spine.
  • Each support surface is preferably provided at its own joint, and each joint is connected to a mounting plate that is attached to the web. This allows the two support surfaces to independently exert compliance or pivotal or rotational movement through the joint.
  • a so-called Dondola joint is preferably provided as the joint, which enables a tumbling movement of the support surface around the point of attack on the joint. During the tumbling movement, this joint can have almost the same resistance. This leads to a pleasant sitting experience on the one hand and an active supporting effect on the other.
  • the two support surfaces are provided directly on a common fastening plate at a distance from one another.
  • 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 extending in the vertical direction.
  • a further advantageous embodiment of the thorax support provides that its height can be adjusted along the web.
  • the fastening plate is preferably arranged to be displaceable along the web. This allows for individual adjustment to the size of the user.
  • the support surface preferably has a parallelogram-shaped or oval base surface, with a V-shaped expansion facing the shoulder rest being formed between the two support surfaces. This allows the spine and shoulder blades to remain relatively free are movable and the thorax support rests below the shoulder blades and provides appropriate support.
  • the support surface of the thorax support is preferably made of a foam material or at least a fluid cushion.
  • This fluid cushion can be filled with a gel or a gas, in particular with air.
  • a backrest 56 is shown in perspective. This backrest 56 is intended 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 in the Figures 6 to 8 is shown as an example.
  • the backrest 56 comprises a backrest structure 76, which is designed as a bionic skeleton.
  • This bionic skeleton 76 accommodates a covering 79 as a seat cover.
  • This covering 79 can be a net covering made 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 structure. With such a frame construction, a covering can also be provided.
  • the frame construction can also be at least partially or completely surrounded by upholstery, so that the frame construction of the backrest structure is not immediately visible from the outside.
  • the bionic skeleton 76 includes a web 78 running in the vertical direction. Alternatively, several webs running in the vertical direction can also be provided. Laterally projecting wings 77, 83, 85 are provided on this web 78, the number, shape and/or position of which can be specific to the application.
  • 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.
  • side wings 83 are provided, which form a shoulder rest.
  • Wings 77 are provided which extend laterally.
  • These wings 77 preferably extend laterally outwards to a larger extent than the upper wings 83.
  • Further wings 85 are preferably provided in the lower region of the web 78, in particular the lumbar region. These wings are used to hold the covering 79 or upholstery so that it can extend from the shoulder area through the middle area to the lumbar area.
  • the bionic skeleton 76 can be made in one piece.
  • the web can also have several mounting positions for attaching the wings 83, 77, 85.
  • the wings 83, 77, 85 are preferably arranged and designed in mirror images 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 user's seat or sitting position.
  • the middle wings 77 are provided with a largest lateral extent and with a curvature at least in the end region. This means that improved support and/or an enlarged backrest area can be achieved via the covering.
  • the upper wings 83 can be designed to be shorter than the middle wings 77 in their lateral extent. If the lower wings 85 are provided, they can correspond to the lateral extent of the upper wings 83 or can be made slightly larger. In any case, these are shorter than the middle wings 77.
  • a thorax support 92 can be provided on the backrest 56.
  • a guide 91 is provided on the web 78, through which the thorax support 92 can be attached 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 passed through and fastened with a hand knob 96.
  • the guide 91 can also encompass the web 78 and include a releasable clamping connection or locking connection that engages the web 78.
  • a locking rail with several locking positions or a clamping strip can also be provided between the support surfaces 93 and the web 78.
  • the height of the thorax support 92 is preferably adjustable.
  • the thorax support 92 comprises two support surfaces 93, which are preferably designed symmetrically to the web 78. These support surfaces 93 can preferably be deflected independently of one another.
  • FIG 2 is a schematic side view of the backrest 56 Figure 1 shown.
  • 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 via a handwheel or a hand knob.
  • Figure 3 is a perspective view from behind of the backrest 56 according to Figure 1 shown. This view shows that the support surfaces 93 are provided, for example between the middle wings 77 and the upper wing 83, in mirror image to the web 78. The support surfaces 93 can also be moved downwards 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 thorax support 92 is preferably positioned between the web 78 and the covering 79. This goes out in particular Figure 2 out. As a result, the thorax support 92 can optionally be used on the backrest 56.
  • the support surfaces 93 of the thorax support 92 engage on a back side of the covering 79 or are positioned at a distance from it, so that when the user assumes a sitting position, the covering 79 lies against the support surfaces 93 and these have a supportive effect for the user.
  • Figure 4a is a side view of the thorax support 92 according to Figure 3 and in Figure 4b a view from above of the thorax support 92 is shown.
  • Each support surface 93 is provided independently of the other on a joint 94 which is connected to the mounting plate 95.
  • each support surface 93 is designed to be flexible independently of the other.
  • each support surface 93 can also be provided in a fixed or non-articulated manner on the fastening plate 95.
  • the fastening plate 95 rests on the web 78 of the backrest structure 76 or surrounds the web 78 or engages in the web 78 in order to attach the thorax support 92 thereto.
  • a height adjustment can preferably be provided by a detachable connecting element, in particular a hand knob 96.
  • an electric drive can also be provided for adjusting the height of the mounting plate 95 relative to the web 78.
  • a joint 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 knob, or the drive for height adjustment.
  • the support surfaces 93 are designed in a parallelogram shape. This alignment of the support surfaces 93 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. Seen in cross section, these can increase slightly in thickness towards the outside, 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 support, in particular a holding plate, to which the foam material, the at least one fluid cushion or the like are permanently or replaceably attached.
  • the support surfaces 93 can be mounted, plugged on and/or clipped onto the mounting plate 95. Holding plates for the support surfaces 93 and the fastening plate 95 can also be made in one piece.
  • the mutually arranged support surfaces 93 preferably have a butterfly-shaped contour.
  • FIG. 5 a schematic side view of an alternative embodiment of the thorax support 92 is shown.
  • the support surfaces 93 are each provided separately from one another 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 geometry or shape of the mounting plate 95 can be adapted to the geometry of the support surface 93, with the surface sections of the mounting plate 95 that rest on the back of the support surface 93 being preferably smaller or set back relative to the outer edges of the support surfaces 93.
  • the support surfaces 93 can rest directly on the mounting 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 relative to the web 78.
  • Figure 6 is a view from the front of a further embodiment of the rotating arrangement 35 with the above-described backrest 57 and thorax support 92.
  • the Figure 7 shows a side view Figure 8 a view from behind Figure 9 a perspective view of the rotating arrangement 35 according to Figure 6 .
  • This rotating arrangement 35 includes 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 construction 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 into a cross member 102 at the upper connection point 19, 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 stationary manner 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 widen and merge into a seating area 101.
  • the seating area 101 extends at least from the seat 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 67 can be accommodated laterally on the columns 61, 62.
  • the seat 57 is height-adjustable along the columns 61, 62.
  • the parallel sections of the columns 61, 62 are preferably arranged laterally to the seat 57.
  • the columns 61, 62 are preferably connected to the seat surface 57 in the rear lateral area of the seat surface 57, preferably by guide elements.
  • the columns 61, 62 extend towards one another, starting from the parallel sections of the columns 61, 62.
  • the upper ends of the columns 61, 62 can preferably merge into an upper pivot bearing 67 or can be attached to the cross member 102.
  • the support frame 41 is inclined towards the support structure 54 relative to the common axis 19 in a side view.
  • the inclination of the lower section of the columns 61, 62 and the parallel sections of the columns 61, 62 preferably extends up to the height of the headrest 59.
  • This inclination preferably extends from the lower end of a foot area 105 or a lower one Connection point 18 to the upper end of the seating area 101.
  • the upper end of the seating area 101 can be the upper end of the backrest 56 or include the headrest 59.
  • This is preferably followed by a curvature 103, whereby the upper sections of the columns 61, 62 are inclined in the opposite direction 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 57 and the pivot bearing 66.
  • This damping device 68 is preferably adjustable in height to the pivot bearing 66.
  • a first joint 69 is provided between the pivot bearing 66 and the damping device 68.
  • a second joint 71 is provided opposite, 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 so that it wobbles relative to the damping device 68.
  • the seat surface 57 is preferably arranged to be longitudinally displaceable and/or adjustable in inclination relative to the seat skeleton 63.
  • This longitudinal displacement is indicated by the arrow 73 in Figure 11 presented and is made possible by a guided tour. This can be designed as a stepless guide or one with locking points.
  • the seat 57 is according to the embodiment in the Figures 9 to 12 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 columns 61, 62 can have a profile in which the guide rail is integrated.
  • guide elements are 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 includes the backrest 56. According to a first embodiment, this can be coupled to the seat surface 57. When the height of the seat 57 is adjusted, the backrest 56 is automatically adjusted. If the backrest 56 is coupled to the seat, in particular via a connecting 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 57. In this case, the backrest 56 is also guided by a guide 74 on the columns 61, 62.
  • the backrest 56 can be adjustable independently of the seat 57. This allows individual adjustment to suit people of different heights.
  • a chair 14 is shown as an example.
  • This chair 14 includes the backrest 56 according to Figures 1 to 3 .
  • the thorax support 92 according to one of the previously described embodiments is preferably provided on this backrest 56.
  • the backrest 56 is accommodated 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 backwards can be adjusted.
  • the backrest 56 can also be positioned firmly locked in a defined position relative to the seat 57 via a lock (not shown).
  • 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 castors.
  • 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 height adjustment.
  • FIG 11 is a perspective view of an embodiment of a chair 14 according to the invention Figure 10 shown.
  • This Embodiment differs in the design of the thorax support 92 from the embodiment according to Figure 10 away.
  • Two support surfaces 93 are provided, which are compared to the embodiment in Figure 10 each have enlarged support surfaces 93.
  • the support surfaces 93 are both arranged on a support surface receptacle 105.
  • This support surface receptacle 105 is, for example, made in one piece and preferably plate-shaped.
  • a recess 106 has the advantage that the support surface receptacle 105 has a lower weight.
  • the air circulation can also be improved with this thorax support 92.
  • 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 mounting plate 95 can be attached to or connected to the backrest structure 76 according to the previously 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 fluid material and filling pressure can also be used.
  • the above-described embodiments of the thorax support 92 can relieve the strain on the spine when sitting.
  • This thorax support 92 has the advantage over lumbar supports that better relief of the spine is achieved.
  • the thorax support 92 which supports the area of the thorax, enlarges the spinal canal, relieves the small vertebral joints and an enlargement of the nerve exit holes in the lumbar spine, which makes it possible to avoid overload and pain when sitting, especially when driving.
  • the chest support 92 may be attached to various types of chairs, such as an office chair, a dining chair, or the like.

Claims (15)

  1. Dossier, en particulier pour un siège (12) ou une chaise (14), pourvu d'une structure de dossier (76) qui reçoit un revêtement (79) ou un rembourrage qui forme au moins une surface de dossier, et pourvu d'un soutien thoracique (92) qui présente deux surfaces d'appui (93) en forme de plaque qui sont séparées l'une de l'autre et qui, du point de vue géométrique, sont construites en miroir par rapport à une extension longitudinale du soutien thoracique (92), et pourvu d'une plaque de fixation (95) qui est assemblée à la structure de dossier (76), caractérisé en ce que les surfaces d'appui (93) sont prévues sur une réception de surface d'appui (105) qui est assemblée à la plaque de fixation (95) de manière articulée ou de manière fixe, et en ce que la réception de surface d'appui (105) est réalisée de manière à présenter une surface supérieure à celle de la plaque de fixation (95).
  2. Dossier selon la revendication 1, caractérisé en ce que les surfaces d'appui (93) du soutien thoracique (92) peuvent être déplacées individuellement ou conjointement de manière à régler leur hauteur par rapport à la structure de dossier (76) et/ou la distance qui les sépare l'une de l'autre.
  3. Dossier selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque surface d'appui (93) est disposée, à l'aide d'une articulation (94), sur une plaque de fixation commune (95) qui est couplée à la structure de dossier (76), ou en ce que les surfaces d'appui (93) sont prévues à distance l'une de l'autre, directement sur une plaque de fixation commune (95) qui est couplée à la structure de dossier (76).
  4. Dossier selon la revendication 1, caractérisé en ce que la réception de surface d'appui (105) est réalisée en forme de plaque et comprend de préférence un évidement (106) de sorte que des zones des surfaces d'appui (93) reposent directement contre la réception de surface d'appui (105) ou sont fixées respectivement à l'aide d'une articulation à la réception de surface d'appui (105) et la recouvrent, et que d'autres zones des surfaces d'appui (93) recouvrent partiellement l'évidement (106) et/ou s'étendent latéralement à l'extérieur de la réception de surface d'appui (105).
  5. Dossier selon la revendication 3, caractérisé en ce qu'au moins une articulation (94) est prévue entre la plaque de fixation (95) et un élément de retenue (89) qui est assemblé à la structure de dossier (78) ou en ce que la plaque de fixation (95) est agencée de manière fixe à un élément de retenue (89) qui est assemblé à la structure de dossier (78), de préférence pour le réglage en hauteur.
  6. Dossier selon l'une quelconque des revendications précédentes, caractérisé en ce que la surface d'appui (93) présente une forme de base ovale ou en forme de parallélogramme, entre les deux surfaces d'appui (93) associées étant formé un évasement en V ou un évasement arrondi en V tourné vers la zone des épaules.
  7. Dossier selon l'une quelconque des revendications précédentes, caractérisé en ce que les surfaces d'appui (93) sont formées en un matériau en mousse ou par au moins un coussin fluide.
  8. Dossier selon l'une quelconque des revendications précédentes, caractérisé en ce que les surfaces d'appui (93) du soutien thoracique (92) reposent contre une face arrière du revêtement (79) ou contre la face arrière du rembourrage ou en ce que les surfaces d'appui (93) du soutien thoracique (92) sont prévues à l'intérieur d'un rembourrage.
  9. Dossier selon l'une quelconque des revendications précédentes, caractérisé en ce que la structure de dossier (76) est réalisée en tant que construction en forme de cadre ou en tant que squelette bionique, et en ce que la structure de dossier (76) réalisé en tant que squelette bionique présente un montant (78) s'étendant en sens vertical lequel présente, à son extrémité supérieure, des ailettes (83) qui font saillie latéralement en tant que soutien d'épaule et, dans la zone centrale, des ailettes (77) faisant saillie latéralement en tant que soutien thoracique.
  10. Dossier selon la revendication 9, caractérisé en ce que dans la partie inférieure dudit au moins un montant (78) qui s'étend en sens vertical sont prévues, en tant que soutien dans la zone de transition entre la colonne lombaire et la colonne thoracique, des ailettes (85) faisant saillie de manière latérale.
  11. Dossier selon la revendication 9, caractérisé en ce que ledit au moins un montant (78) qui s'étend en sens vertical aboutit dans la zone lombaire.
  12. Dossier selon l'une quelconque des revendications 9 à 11, caractérisé en ce que le montant (78) présente, de manière contiguë à la zone lombaire, une partie de raccordement (60) qui peut être couplée à une assise (57) ou qui est assemblée directement à l'assise (57) ou qui se situe dans le prolongement de ladite assise (57).
  13. Dossier selon l'une quelconque des revendications 9 à 12, caractérisé en ce que les ailettes (77, 83, 85) sont prévues sur le montant (78) en étant disposées par paire et à l'opposé l'une de l'autre, et présentent de préférence un tracé rectiligne ou incurvé.
  14. Dossier selon l'une quelconque des revendications 9 à 13, caractérisé en ce que le squelette bionique (76) est réalisé en un composite de fibres.
  15. Dossier selon l'une quelconque des revendications 9 à 14, caractérisé en ce qu'à une extrémité extérieure de l'ailette centrale (77) sont prévus des éléments de fixation et/ou de guidage grâce auxquels le squelette bionique (76) est disposé dans une structure porteuse (54) d'un habitacle et peut être de préférence réglé en hauteur, et/ou en ce qu'à une extrémité inférieure dudit au moins un montant (78) qui s'étend en sens vertical est prévue une partie de raccordement (60) grâce à laquelle le squelette bionique est assemblé à une assise (57) ou à un squelette d'assise (63).
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

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

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EP19762125.3A Active EP3843588B1 (fr) 2018-08-29 2019-08-29 Dossier, en particulier pour un siège

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

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230073826A1 (en) * 2021-09-08 2023-03-09 MillerKnoll, Inc. Seating structure

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7278688B1 (en) * 2006-10-04 2007-10-09 Hsiang-Lin Hung Elastic support structure for a human body to lean against
US8449037B2 (en) * 2010-04-13 2013-05-28 Herman Miller, Inc. Seating structure with a contoured flexible backrest
DE102014112339B4 (de) 2014-08-28 2022-01-20 Bayerische Motoren Werke Aktiengesellschaft Thoraxstütze eines Sitzes
CN204467516U (zh) * 2015-02-13 2015-07-15 杭州护童科技有限公司 可调座深座椅的靠背结构

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EP3843588A1 (fr) 2021-07-07
WO2020043827A1 (fr) 2020-03-05

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