EP1459654A1 - Siège pour assise dynamique - Google Patents

Siège pour assise dynamique Download PDF

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Publication number
EP1459654A1
EP1459654A1 EP03405196A EP03405196A EP1459654A1 EP 1459654 A1 EP1459654 A1 EP 1459654A1 EP 03405196 A EP03405196 A EP 03405196A EP 03405196 A EP03405196 A EP 03405196A EP 1459654 A1 EP1459654 A1 EP 1459654A1
Authority
EP
European Patent Office
Prior art keywords
seat
spring element
spring
seat device
composite material
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Withdrawn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
EP03405196A
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.)
Metallwarenfabrik Nageli 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
Application filed by Metallwarenfabrik Nageli AG filed Critical Metallwarenfabrik Nageli AG
Priority to EP03405196A priority Critical patent/EP1459654A1/fr
Priority to EP04405174A priority patent/EP1459655A1/fr
Publication of EP1459654A1 publication Critical patent/EP1459654A1/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Withdrawn legal-status Critical Current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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions

Definitions

  • the 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.
  • seating devices such as office swivel chairs, which enable dynamic sitting, for example by the seat surface being tiltable forward and backward in order to support an optimal sitting position.
  • 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 surface is flexibly movable on all sides.
  • 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.
  • 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 4 on the left, each spring element 4 for fastening it in the end region having two fastening sections 4a, 4b, not in detail has shown fasteners 6.
  • 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.
  • 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 above can also be made higher, and for example have an overall 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 be essentially semicircular, with its end sections 4d in U-shaped, metallic fasteners 6a and are 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 section of the spring element 4 rests on the seat frame 2, which is the force -Way characteristic of the entire spring arrangement increased.
  • the spring element 4 can also on the in Figure 8b Position fixed be fixed, which affects the force-displacement characteristic such that the entire spring assembly 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 designed in a large number of different seat or chair variants, for example also as the seat of a car or an aircraft. All these seat and chair variants are common, that the seat is mounted movably 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 be movably supported, for example, only in a linear direction B with respect to the seat frame 2 using guide elements (not shown).
  • the spring elements 4 can, for example, also be such be configured such that the seat 3 and / or the backrest 5 have an 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.
  • 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 Adjust the spring properties of the office swivel chair individually when assembling it and, if necessary, 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.

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  • Chairs Characterized By Structure (AREA)
EP03405196A 2003-03-20 2003-03-20 Siège pour assise dynamique Withdrawn EP1459654A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03405196A EP1459654A1 (fr) 2003-03-20 2003-03-20 Siège pour assise dynamique

Publications (1)

Publication Number Publication Date
EP1459654A1 true EP1459654A1 (fr) 2004-09-22

Family

ID=32799196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03405196A Withdrawn EP1459654A1 (fr) 2003-03-20 2003-03-20 Siège pour assise dynamique

Country Status (1)

Country Link
EP (1) EP1459654A1 (fr)

Citations (4)

* 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
DE4210283C1 (fr) * 1992-03-28 1993-04-01 Martin Stoll Gmbh, 7890 Waldshut-Tiengen, De
DE4432656A1 (de) * 1994-09-14 1996-03-21 Gotthard Bresch Stuhl
DE19742052A1 (de) 1996-09-27 1998-09-17 Bastian Dr Niemann Anschläge mit Hubbegrenzung für Torsionsdreh- und Kipplager in Sitzmöbeln

Patent Citations (4)

* 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
DE4210283C1 (fr) * 1992-03-28 1993-04-01 Martin Stoll Gmbh, 7890 Waldshut-Tiengen, De
DE4432656A1 (de) * 1994-09-14 1996-03-21 Gotthard Bresch Stuhl
DE19742052A1 (de) 1996-09-27 1998-09-17 Bastian Dr Niemann Anschläge mit Hubbegrenzung für Torsionsdreh- und Kipplager in Sitzmöbeln

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