EP1459655A1 - Siège pour s'asseoir dynamiquement - Google Patents

Siège pour s'asseoir dynamiquement Download PDF

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Publication number
EP1459655A1
EP1459655A1 EP04405174A EP04405174A EP1459655A1 EP 1459655 A1 EP1459655 A1 EP 1459655A1 EP 04405174 A EP04405174 A EP 04405174A EP 04405174 A EP04405174 A EP 04405174A EP 1459655 A1 EP1459655 A1 EP 1459655A1
Authority
EP
European Patent Office
Prior art keywords
seat
spring element
spring
seat device
frame
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.)
Withdrawn
Application number
EP04405174A
Other languages
German (de)
English (en)
Inventor
Thomas Nägeli
Christoph Nägeli
Clemens Dransfeld
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.)
NAEGELI SWISS AG
Original Assignee
Metallwarenfabrik Nageli AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from EP03405196A external-priority patent/EP1459654A1/fr
Application filed by Metallwarenfabrik Nageli AG filed Critical Metallwarenfabrik Nageli AG
Priority to EP04405174A priority Critical patent/EP1459655A1/fr
Publication of EP1459655A1 publication Critical patent/EP1459655A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/021—Rocking chairs having elastic frames
    • 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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/445—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C9/00—Stools for specified purposes
    • A47C9/002—Stools for specified purposes with exercising means or having special therapeutic or ergonomic effects

Definitions

  • the invention relates to a seat device for dynamic sitting according to the preamble of claim 1.
  • the invention further relates to the use of a spring element made of fiber composite material for a seat device.
  • a seat device which has a torsion pivoting and tilting bearing consisting of a plurality of rubber buffers, which is firmly connected to a seat plate, so that the seat is flexibly movably supported on all sides.
  • This torsion and tilting bearing requires a relatively large installation height, so that this is unsuitable for a chair made according to the Euro standard for office swivel chairs with a lower seat height of 40 cm at + 12 cm stroke by means of gas pressure spring.
  • the rubber buffers used in the torsion and tilting bearings also have a relatively short lifespan and require a stroke limitation.
  • a seat device for dynamic sitting comprising a seat position and a seat, wherein the seat is connected to the seat frame via a spring element made of fiber composite material such that the seat is movably mounted, in particular movably, on all sides.
  • the seat device advantageously has a plurality of spring elements.
  • a seat device There are a number of design options for a seat device.
  • the term seating device used here can be, for example, an office swivel chair with casters, a conference chair with four legs, a children's chair, a children's swivel chair, a sofa, a seat like this used in a stadium, or for example a car seat like this in a car applied, act. All these seat devices according to the invention have in common that the seat surface or the seat plate is movably mounted with respect to the seat frame or the substructure.
  • the seat device according to the invention for dynamic sitting comprising the spring element mentioned can be designed in a large number of different embodiments and different areas of application, for example as an office chair, as a seat device in an automobile, or as a seat device in public transport such as an airplane, a bus or a railroad car.
  • the seating device according to the invention can, for example, also be designed for the home, for example as a sofa or as a kitchen chair.
  • the seating device according to the invention can also include further subcomponents such as armrests or backrests, which are connected to the seat frame, the seat or, for example, a chair leg via spring elements made of fiber composite material, so that these subcomponents are also arranged to be movable and thereby promote dynamic sitting or movement while sitting.
  • further subcomponents such as armrests or backrests, which are connected to the seat frame, the seat or, for example, a chair leg via spring elements made of fiber composite material, so that these subcomponents are also arranged to be movable and thereby promote dynamic sitting or movement while sitting.
  • spring elements with different force-displacement spring characteristics can be provided as a kit for a seat device, so that the resilient properties of the seat device can be freely selected by installing correspondingly hard or soft springs.
  • These springs can be replaced at any time by springs with a different force-displacement spring characteristic, so that a seat device can be individually adjusted and changed at any time to ensure seating comfort that is adapted to the person concerned.
  • FIG. 1a shows a seat device 1 comprising a seat frame 2 with chair legs 2a and chair frame 2b and a seat 3, the seat 3 being connected to the seat frame 2 by means of spring elements 4 arranged in a distributed manner.
  • the spring elements 4 have a curved course, the spring elements 4 being attached with their end sections to the seat frame 2 or to the seat 3, so that the seat 3 has at least one mobility shown in the direction of the arrow F having.
  • Figure 1c shows a plan view of the seat device 1 with the seat 3 removed, so that only the seat frames 2 and the spring elements 4 are shown.
  • the seat frame 2 has two narrow, strip-shaped spring elements on the left 4, each spring element 4 having two fastening sections 4a, 4b with fastening means 6 (not shown in detail) for fastening it in the end region.
  • a single, long spring element 4 is shown, which extends almost over the entire length of the chair frame 2b.
  • four narrow, strip-shaped spring elements 4, which jointly carry the seat 3, could also be arranged on the seating furniture 2.
  • only two long spring elements 4, which together carry the seat 3, could also be arranged on the seat frame 2.
  • the spring elements 4 consist of a composite material, preferably of polypropylene and glass fibers. These spring elements 4 have the advantages that a very low overall height is required for the resilient connection of seat frame 2 and seat 3. In addition, the spring elements 4 are fatigue-free and can therefore be used maintenance-free for an extremely long period of time.
  • the spring elements 4 can be arranged in a wide variety of ways in order to bring about a resilient connection between the seat frame 2 and the seat 3, and to thereby enable dynamic or movable sitting.
  • a person sitting on the seat 3 can change the inclination of the seat 3 with respect to the seat frame 2 or the floor 6 by a corresponding weight shift.
  • FIGS. 2a to 2e each show, in a side view, differently running spring elements 4, all of which have the strip-shaped course shown in FIG. 2g in plan view.
  • the spring element 4 can be straight, for example run ( Figure 2a), run slightly curved ( Figure 2b), run slightly or strongly S-shaped ( Figure 2c, 2d) or Z-shape ( Figure 2e).
  • the spring element 4 can also run in a C-shape, the spring element 4 being connectable to the seat 2 via the fastening section 4a and to the seat 3 via the fastening section 4b.
  • the glass fibers of the spring element 4 are designed as directional continuous glass fibers, which extend in the direction of the elongated strip-shaped course shown in FIG. 2g.
  • the strip-shaped spring elements 4 shown in FIGS. 2a to 2f preferably have a thickness between 1 and 5 mm.
  • FIG. 2h shows a further exemplary embodiment of a spring element 4, which has a fastening section 4a and two fastening sections 4b.
  • FIG. 2i shows a top view of the spring element 4 shown in FIG. 2h.
  • the spring element 4 shown in FIG. 2h could also be circular, as shown in the top view according to FIG Attachment points 4b. As shown in FIG.
  • the spring element 4 can also be designed in the shape of a cross, with fastening points 4a, 4b.
  • the strip-shaped spring element 4 could, as shown in FIG. 2m, also be L-shaped or semicircular, with fastening points 4a, 4b.
  • the spring elements 4 shown in FIGS. 2a to 2m have, in the side view shown, an overall height of preferably between 0 mm and 25 mm, and in particular an overall height between 0 mm and 5 mm.
  • the spring elements 4 according to the invention therefore require an extremely low installation height.
  • the spring elements 4 mentioned can also be made higher, and for example have a height of up to 25 mm.
  • FIG. 3 shows a side view of a seat shell 3a, as is used for office swivel chairs.
  • spring elements 4 can be fastened, which in turn can be fastened to the seat frame 2 of an office swivel chair.
  • a seat cushion 3b is arranged in the seat shell 3a.
  • FIG. 4 shows a further seat shell 3a made of plastic, the spring elements 4 forming part of the seat shell 3a or being cast directly into the seat shell 3a, so that the fastening sections denoted by 4b can be connected to the seat frame 2.
  • FIG. 5 shows a section through a seat device 1, the seat frame 2 and seat 3 of which are connected to one another via a spring element 4 with V-shaped spring sections 4c and fastening means 6.
  • This arrangement has a progressive spring characteristic in that an increasingly stronger spring force counteracts the seat 3 moved downward.
  • the force-travel characteristic of the spring element 4 can also be actively influenced, for example with the schematically illustrated spring travel limiting means 8, which can be moved back and forth in the direction 9, which can rest against the spring section 4c, which shortens the spring-effective leg length and thus a progressively increasing one Force-displacement characteristic results.
  • FIG. 6 shows a further side view of a seat device 1.
  • the spring element 4 is designed to run essentially semicircular, the end sections 4d of which are held in u-shaped, metallic fastening means 6a and fastened to the seat 3 and the seat frame 2 by means of the screw 6.
  • the seat 3 is shown in an unloaded position 10a and a loaded position 10b. With increasing load, a longer spring section 4c rests against the seat frame 2 or seat 3, which results in an increasingly progressive force-displacement characteristic of the spring element 4.
  • FIG. 7 shows a further section through a seat device 1 with seat frame 2 and seat 3, which are connected to one another via two spring elements 4.
  • the seat frame 2 has a hole in the center through which the two spring elements 4 fastened at the bottom of the seat frame 2 run to the seat 3.
  • This arrangement of the spring elements 4 enables a very long spring travel, since the legs of the spring elements 4 can partially escape through the hole during the compression. It can prove to be advantageous to restrict the mutual mobility between seat frame 2 and seat 3.
  • spring travel limiting means 7 configured as rubber buffers are arranged on the seat frame 2 and on the seat 3.
  • the seat 3 is movably mounted on all sides with respect to the seat frame 2.
  • FIGS. 8a and 8b show a simple arrangement for changing the spring characteristic of the spring arrangement comprising the spring element 4.
  • the spring element 4 can be fastened to the position shown in FIG. 8a, as a result of which a longer partial section of the spring element 4 rests on the seat frame 2, which the force-displacement characteristic of the entire spring arrangement is increased.
  • the spring element 4 can also be fastened to the position shown in FIG. 8b, which influences the force-displacement characteristic in such a way that the entire spring arrangement has a lower spring hardness.
  • FIG. 9 shows the side view of an office swivel chair 1, which comprises a seat frame 2 with a chair leg 2a, chair plate 2c, inclination adjustment device 2d, height-adjustable rod 2e, pivot bearing 2f, holding device 2g and rollers 2h.
  • the office swivel chair 1 comprises a backrest 5 and a backrest holding device 5a.
  • the office swivel chair 1 can also comprise an armrest 5b, which is connected to the seat frame 2 via a support 5c.
  • the armrest 5b is also connected to the carrier 5c via a spring element 4, so that the armrest 5b, similar to the seat 3, is connected to the seat frame 2 in a springy and / or tiltable manner.
  • the backrest 5 could be connected to the backrest holding device 5a via spring elements 4.
  • the inclination adjustment device 2d allows the inclination of the chair plate 2c to be adjusted with respect to the rod 2e or the chair leg 2a.
  • the spring elements 4 and thus the seat shells 3a shown in FIGS. 3 and 4 can be fastened on the chair plate 2c, so that the seat 3, comprising the seat shell 3a and the seat cushion 3b, is tilted relative to the chair plate 2c. This flexibility enables dynamic sitting.
  • the seat device 1 can be designed as an office swivel chair.
  • the seat device 1 can be in a variety of different seat or chair variants be configured, for example as the seat of a car or an aircraft. All these seat and chair variants have in common that the seat is movably mounted with respect to the seat frame with the aid of springs made of fiber composite material in order to enable dynamic sitting.
  • FIGS. 10a and 10b schematically show a so-called visitor or conference chair, which usually has four legs 2a, in a side view and in a front view.
  • This seat device 1 comprises a seat frame 2 with four chair legs 2a, a chair frame 2b and two chair back supports 2i.
  • the seat 3 is connected to the seat frame 2 via spring elements 4.
  • the backrest 5 is connected to the chair back supports 2i via spring elements 4, so that both the seat 3 and the backrest 5 are connected to the seat frame 2 in a resilient manner.
  • one of the spring elements 4 shown in FIGS. 2a to 2m can be used as spring elements 4.
  • the spring elements 4 can also be designed in a large number of other geometric shapes.
  • the seat 3 or the backrest 5 can be moved in a maximum of 6 dimensions, namely in three straight translational directions and in three axes of rotation. Such mobility in six dimensions is said to be movable on all sides.
  • the seat device 1 can also be movable in less than six dimensions.
  • the seat 3 could only be movably supported in three dimensions, in the linear direction A and in two directions of rotation G and F.
  • the backrest 5 could, for example only in FIG linear direction B with respect to the seat frame 2 be movably mounted.
  • the spring elements 4 can, for example, also be designed such that the seat 3 and / or the backrest 5 have additional mobility in the direction C.
  • the mobility in the direction C can be, for example, only a few millimeters, depending on the spring element 4 selected, but, if necessary, could also be up to one centimeter or more. If necessary, guide elements could also be arranged which prevent or limit the mobility of the seat 3 and / or the backrest 5 with respect to the seat frame 2 in certain dimensions.
  • FIG. 7 shows limiting means 7 which limit the maximum translatory and / or rotational movement path of the seat 3 with respect to the seat frame 2.
  • the spring element 4 consists of a fiber composite material, of glass fibers embedded in a matrix, a thermoset or a thermoplastic being used as the matrix, for example polypropylene, polyamide or PEEK.
  • the fiber composite material could also comprise natural fibers or consist of natural fibers which are embedded in a matrix.
  • the fibers can be arranged in the fiber composite material such that the spring element 4 has isotropic or anisotropic properties.
  • the spring elements 4 according to the invention can be designed with different spring hardness or different elastic modulus.
  • a user can individually adjust the spring properties of the office swivel chair when it is being assembled and, if necessary, can also change it again at a later time by replacing the spring elements 4.
  • This property of the seating device has the advantage that the spring properties of the office swivel chair can be optimally adjusted once and that these spring properties no longer change during subsequent use due to the spring properties of the fiber composite material. An unconscious adjustment of the spring properties, as is often the case with known office swivel chairs, is therefore ruled out.
  • the spring elements made of fiber composite materials have the advantage that the force-displacement spring characteristics can be varied within a wide range by simply varying the number, arrangement and / or type of fibers and / or the matrix. In particular, geometrically identical spring elements can also be formed which, owing to the different structure and arrangement of fibers and matrix, have a different force-displacement spring characteristic.
  • a set of geometrically identical spring elements can be provided for an office swivel chair, the spring elements, however, having different force-displacement spring characteristics.
  • the spring elements can be freely mounted on the office swivel chair, so that the spring properties of the office swivel chair with regard to dynamic sitting can be adjusted in a variety of ways.
  • four spring elements with the same force-displacement spring characteristic can be installed.
  • FIG. 11a shows a further exemplary embodiment of a seat device 1, the seat 3 and the seat frame 2 being connected via a C-shaped or U-shaped spring element 4, the spring element 4 being arranged on that side of the seat 3 on which the knees are in each case are located.
  • the spring element 4 protrudes in the direction B over the seat 3 and the seat frame 2.
  • the seat frame 2 comprises a chair plate 2c, a height-adjustable rod 2e and chair legs 2a (not shown) with rollers 2h.
  • a further spring element 4 is arranged between the seat 3 and the backrest 5, so that the backrest 5 is arranged springs with respect to the seat 3.
  • the seat device 1 could also be designed without a backrest 5.
  • FIG. 11b schematically shows a side view of the chair 1 shown in FIG. 11a.
  • the seat 3, the spring element 4 and part of the seat frame 2, preferably the chair plate 2c are formed from a single part and from plastic.
  • This part is produced, for example, as an injection molded part, 4 fibers being arranged in the area of the spring element and embedded in the plastic matrix such that the spring element 4 is formed.
  • the chair plate 2c and the seat 3 are preferably designed such that they are stiff and therefore not or hardly flexible.
  • the single part also comprises the spring element 4 arranged between the seat 3 and the backrest 5 and the backrest 5, the latter spring element 4 also being formed with the aid of fibers arranged correspondingly in the plastic.
  • FIG. 11b shown seat device 1, with the exception of the rod 2e, made of plastic, and is preferably designed as a single part, that is, all sub-components, with the exception of the rod 2e, form a single or one-piece plastic part.
  • This seat device 1 can be configured in such a way that the chair plate 2c is connected to rollers 2h via a metal rod 2e, for example.
  • this seating device 1 can also have a fixed seating frame 2, which can be made of metal or plastic.
  • the seat device 1 shown in FIG. 11c could also be formed from one piece and from plastic, the springs 4 correspondingly having fibers arranged in the plastic or in the matrix.
  • the seat 3 could also be designed as a seat shell 3a, on which a seat cushion 3b still rests.
  • the spring 4 could also be connected to the seat 3 and / or the seat frames 2 and / or the backrest 5 with a detachable connection, for example a screw connection, a connection such as that shown in FIG. 5 or 6.
  • the seat 3 has properties which are resilient in particular in the direction A.
  • An advantage of these seat devices 1 can be seen in the fact that they can be designed to be very light and elegant, and the seat 3 has pleasantly resilient properties.
  • the spring properties could be determined, for example, by a spring 4 selected with corresponding spring properties. Of course, it is also possible to provide an arrangement as shown in FIG.
  • the seat 3 and / or the backrest 5 for the adjustable limitation of the spring travel in order to set the spring characteristic of the spring 4.
  • additional springs in the plastic on the appropriate fibers are arranged in a suitable location, and the thickness of the plastic is selected accordingly, so that a desired local spring property results.
  • the seat 3 and / or the backrest 5 can, for example, have surfaces with different local spring properties in order to increase the seating comfort or to improve the ergonomic properties of the seat device 1.

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EP04405174A 2003-03-20 2004-03-22 Siège pour s'asseoir dynamiquement Withdrawn EP1459655A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04405174A EP1459655A1 (fr) 2003-03-20 2004-03-22 Siège pour s'asseoir dynamiquement

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03405196 2003-03-20
EP03405196A EP1459654A1 (fr) 2003-03-20 2003-03-20 Siège pour assise dynamique
EP04405174A EP1459655A1 (fr) 2003-03-20 2004-03-22 Siège pour s'asseoir dynamiquement

Publications (1)

Publication Number Publication Date
EP1459655A1 true EP1459655A1 (fr) 2004-09-22

Family

ID=32826815

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04405174A Withdrawn EP1459655A1 (fr) 2003-03-20 2004-03-22 Siège pour s'asseoir dynamiquement

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EP (1) EP1459655A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1839530A1 (fr) * 2006-03-31 2007-10-03 Bacher Tische M. & W. Bacher GmbH Meuble d'assise
WO2017029409A1 (fr) * 2015-07-03 2017-02-23 Inventor Group Gmbh Suspension de chaise multidimensionnelle
FR3062557A1 (fr) * 2017-02-09 2018-08-10 Emile Kadoche Siege tonique

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB424216A (en) * 1934-08-25 1935-02-18 Henry Barrett Improvements relating to chairs, seats, settees or the like
US2913038A (en) * 1957-03-08 1959-11-17 Richard A Mcderby Seats
DE4210283C1 (fr) * 1992-03-28 1993-04-01 Martin Stoll Gmbh, 7890 Waldshut-Tiengen, De
DE29501827U1 (de) * 1995-02-04 1995-06-01 Marx Christian Sitz, frei schwingend mit einstellbarer Federung
DE4410383A1 (de) * 1994-03-25 1995-09-28 Simon Klinksiek Stuhl
DE19742052A1 (de) 1996-09-27 1998-09-17 Bastian Dr Niemann Anschläge mit Hubbegrenzung für Torsionsdreh- und Kipplager in Sitzmöbeln

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB424216A (en) * 1934-08-25 1935-02-18 Henry Barrett Improvements relating to chairs, seats, settees or the like
US2913038A (en) * 1957-03-08 1959-11-17 Richard A Mcderby Seats
DE4210283C1 (fr) * 1992-03-28 1993-04-01 Martin Stoll Gmbh, 7890 Waldshut-Tiengen, De
DE4410383A1 (de) * 1994-03-25 1995-09-28 Simon Klinksiek Stuhl
DE29501827U1 (de) * 1995-02-04 1995-06-01 Marx Christian Sitz, frei schwingend mit einstellbarer Federung
DE19742052A1 (de) 1996-09-27 1998-09-17 Bastian Dr Niemann Anschläge mit Hubbegrenzung für Torsionsdreh- und Kipplager in Sitzmöbeln

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1839530A1 (fr) * 2006-03-31 2007-10-03 Bacher Tische M. & W. Bacher GmbH Meuble d'assise
WO2017029409A1 (fr) * 2015-07-03 2017-02-23 Inventor Group Gmbh Suspension de chaise multidimensionnelle
FR3062557A1 (fr) * 2017-02-09 2018-08-10 Emile Kadoche Siege tonique

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