EP0678260B1 - Meuble d'assise - Google Patents

Meuble d'assise Download PDF

Info

Publication number
EP0678260B1
EP0678260B1 EP95500026A EP95500026A EP0678260B1 EP 0678260 B1 EP0678260 B1 EP 0678260B1 EP 95500026 A EP95500026 A EP 95500026A EP 95500026 A EP95500026 A EP 95500026A EP 0678260 B1 EP0678260 B1 EP 0678260B1
Authority
EP
European Patent Office
Prior art keywords
zone
casing
item
displacement
strap
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.)
Expired - Lifetime
Application number
EP95500026A
Other languages
German (de)
English (en)
Other versions
EP0678260A1 (fr
Inventor
Victor Troyas Bermejo
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.)
Manufacturas Metalicas Jevit SA
Original Assignee
Manufacturas Metalicas Jevit SA
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 Manufacturas Metalicas Jevit SA filed Critical Manufacturas Metalicas Jevit SA
Priority to SI9530112T priority Critical patent/SI0678260T1/xx
Publication of EP0678260A1 publication Critical patent/EP0678260A1/fr
Application granted granted Critical
Publication of EP0678260B1 publication Critical patent/EP0678260B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • A47C3/12—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats with shell-shape seat and back-rest unit, e.g. having arm rests
    • 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
    • A47C7/4454—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 of torsion type

Definitions

  • This invention concerns an item of furniture for sitting, composed of a rear casing or shell of a plastic material, a forward padded element backing on to and secured to the internal surface of the casing or shell, and a lower support element, which can take the form of a central column, support legs or runners, etc.
  • the invention's item of furniture for sitting is of the type known as "ergonomic”, generally used in work places, whether in the form of an armchair or ordinary chair, in any of their variants.
  • “ergonomic” generally used in work places, whether in the form of an armchair or ordinary chair, in any of their variants.
  • Encompassed within this type of furniture for sitting are all those offering excellent support anatomy and which also allow easy adjustment of that anatomy and of its position in accordance with the movements or wishes of the user.
  • the adjustments in position and anatomy of the surfaces of the seat and the back are generally achieved by combining the capacity for partial deformation of the body defining the seat and back of the chair with the action of an adjustment mechanism linking the seat body with the lower support element.
  • the present invention is directed towards the body defining the seat and back, which can be used for creating any kind of armchair or ordinary chair and which can also be combined with an adjustment mechanism for obtaining excellent conditions of support and comfort.
  • the invention concerns an item of furniture for seating in which the body defining the seat and back, hereafter referred to as the seat body, is composed of a single-piece rear casing and a forward padded element, the whole unit having a certain capacity for deformation in particular zones, allowing elastic balancing of the back to be obtained.
  • An armchair or ordinary chair that includes a seat body composed of a rear casing or shell and a forward padded element is already known from European patents No 309.368 and 309.369.
  • the rear shell or casing obtained from a single piece of plastic material, has a virtually rigid nature except in an intermediate zone of the back, where there is longitudinal flexibility allowing deformation of the back to be obtained only in the longitudinal direction of the back. This flexibility is achieved by means of the formation in the said intermediate zone of the back of a structure consisting of parallel rigid transverse blocks, consecutively connected among themselves by means of internal membranes with greater flexibility. The capacity for deformation of the structure thus formed will depend on the number of blocks and membranes, as well as on the width and nature of these membranes.
  • the shell or casing includes a metallic structure that extends below the rear part of the seat, crosses the shell and is prolonged over the internal surface of the back as far as the region of the flexible intermediate zone of that back.
  • the metallic structure of the casing only has rigidization functions and, moreover, it crosses the casing; which requires complicated assembly processes.
  • the backward flexing is effected by one single resilient element.
  • the present invention has as its object an item of furniture for sitting, in which the shell or casing of the seat body is made from a single piece, without sharp discontinuities or interruptions, and with controlled flexibility sufficient for obtaining a capacity for elastic deformation in certain zones and in a magnitude and direction such that allow certain excellent conditions of support and comfort to be attained.
  • the casing of the invention an elastic balancing of the back is achieved, while a situation of comfortable and secure support is maintained, whatever might be the position of the occupant.
  • the casing of the seat body is composed of a continuous, transversely flexible wall to which is fixed on its internal surface a reinforcing element designed in such a way that it provides rigidity for certain parts of the casing and allows a certain controlled flexibility in other parts of that casing.
  • the wall of the casing is subdivided into three zones, a lower seat zone, an upper back zone and an intermediate transition zone.
  • the reinforcing element mentioned above includes a rigid frame and certain straps that are elastically flexible in the transverse direction.
  • the rigid frame runs over the transition zone and is slightly extended over the seat zone on one side and over the back side on the opposite side.
  • the straps run longitudinally over the middle part of the back zone, to which they are connected at their upper ends with partial freedom of longitudinal displacement, while at their lower ends they are secured to the rigid frame.
  • the straps will have a resistance to upper transverse flexion of the casing, and will preferably be made of steel.
  • the capacity for deformation of the casing can in addition be controlled by means of rigidizing ribs of variable height that project and run along the internal surface of the casing.
  • the seat body represented in figure 1 is composed of a rear semi-rigid casing or shell, referenced with number 1, and of a forward padded element 2 which backs on to and is fixed to the internal surface of the casing 1.
  • This seat body will be mounted on a lower support element, not represented here, which can take the form of a central column, support legs or runners, etc., and which can also include a mechanism for adjusting the inclination of the seat body.
  • the seat body can also have side arms 3 for taking the form of an armchair, or it can lack them.
  • the casing or shell 1 is composed of a transversely flexible continuous wall 4.
  • This wall can be provided on its internal surface with longitudinal ribs of variable height with the aim of controlling its rigidity, as shall be explained below.
  • the wall 4 shapes a lower seat zone 5, an upper back zone 6 and an intermediate transition zone 7.
  • a reinforcing element consisting of a rigid frame 8 and certain straps 9 that are elastically flexible in the transverse direction.
  • the rigid frame 8 crosses the intermediate transition zone 7 and is slightly extended over the seat zone 5 on one side, and over the back zone 7 on the opposite side.
  • the said straps 9 run longitudinally over the middle part of the back zone 6.
  • These straps are fixed by their upper ends to the wall 4 by means of securings 10 that allow a certain capacity for relative longitudinal displacement of the straps with respect to the said wall 4, while at the lower ends these straps are fixed to the rigid frame and to the wall 4 by means of securings 11, which can also serve for fixing the arms 3, figure 1.
  • the straps 9, preferably made of steel, will have a resistance to transverse flexion greater than that of the upper zone of the back 6.
  • the reinforcing element composed of the frame 8 and the straps 9 serves to provide rigidity for the transition zone of the shell and for controlling the flexion of the back zone.
  • the rigid frame 8 can consist of an inverted U formed from a tubular profile, with the U adopting a transverse curvature coincident with that of the internal surface of the casing to which it is applied.
  • the wall 4 of the casing or shell is provided on its internal surface with longitudinal ribs 12, figure 4, which will act as rigidizing elements, the height of those ribs being varied in accordance with the rigidity that it is wished to achieve.
  • the securings 10 for the straps can include a plate 13, which is fixed to the wall 4 of the casing and which defines a longitudinal passage 14, with the strap 9 running between the bottom of that passage and the internal surface of the wall 4.
  • the facing surfaces of the passage 14 and the wall 4 of the casing can be provided with longitudinal ribs 15 that will rest on the surfaces of the straps 9, all this as can be better appreciated from figures 5 and 6.
  • the straps 9 allow the back to be able to withstand great stresses without degrees of deformation being reached that would be undesirable for the back.
  • a further advantage deriving from the inclusion of the straps 9 is that the back zone 7 can enjoy a certain capacity for torsional movements which can occur when the user inclines the back more towards one side than to the other, due to the possibility of independent displacement of both straps.
  • straps 9 also allows the back zone 6 to reach the desired height, with the aim of offering complete support for the user's back as far as the shoulders.
  • the deformation of the back will include an initial phase, involving only the capacity for flexion of the back zone 6, and demanding a relatively small effort, and a second phase, starting from which the projection 17 rests on the lower edge of the window 16 of the straps 9, figure 6, in which those straps and back are involved, offering resistance to flexion greater than that of the back 6 alone.
  • the casing is shaped in such a way that it admits a filling element 2, which includes a portion 18 with a lenticular cross-section coincident with the transition zone 7 of the casing.
  • This shape will offer perfect support for the pelvic zone, allowing the spinal column to be maintained in a suitable position.
  • the padded element 2 includes a frame 19 via which and by means of securing clips this padded element can be attached to the casing 1.
  • the casing 1 is provided on its internal surface with lugs 20, which can be shaped from the same ribs 12 of the casing. Fitted on these lugs 20 and straddling them are retaining clips 21 provided with securing studs and tabs, which can, for example, take the shape represented in figures 7 and 8.
  • the lugs 20, with the clips 21 duly secured to them, are introduced via facing openings or windows 22 formed in the frame 19 of the padded element 2.
  • the securing system described above allows the padded element 2 to be fitted and removed as many times as is wished, thanks to the elasticity of the securing studs and lugs of the clips 21.
  • All the lugs 20 and clips 21 are orientated in the longitudinal direction along the casing 1, allowing a certain capacity for relative displacement between casing and padded element, which secures the coupling cavity whatever might be the movements of the user's body, and without creating tensions that would tend to detach the padded element.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs Characterized By Structure (AREA)
  • Massaging Devices (AREA)
  • Special Chairs (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Claims (7)

  1. Article de mobilier pour s'asseoir, composé d'un châssis ou carcasse arrière (1) d'une seule pièce possédant une certaine capacité de déformation élastique et d'un élément matelassé avant (2) appliqué sur et fixé à la face interne du châssis (1), caractérisé par le fait que ledit châssis (1) se compose d'une paroi continue (4) présentant un élément de renforcement fixé sur sa face interne, paroi qui est subdivisée en trois zones, une zone d'assise (5) inférieure, une zone de dossier (6) supérieure et une zone de transition (7) intermédiaire, la zone de dossier (6) supérieure étant en mesure de fléchir élastiquement vers l'arrière et avec torsion, et élément de renforcement qui comporte un cadre rigide (8) s'étendant sur la zone de transition (7) et se prolongeant légèrement sur la zone d'assise (5), d'un côté, et sur la zone de dossier (6), du côté opposé, et de certaines brides (9) qui sont flexibles élastiquement vers l'arrière et qui s'étendent longitudinalement sur la partie centrale de la zone de dossier (6) à laquelle elles sont connectées par leurs extrémités supérieures avec liberté partielle de déplacement longitudinal par rapport à la zone de dossier (6) inférieure, tandis qu'elles sont fixées, à leurs extrémités inférieures, au cadre rigide (8), lesdites brides flexibles (9) présentant une résistance à la flexion vers l'arrière plus grande que celle de la zone de dossier (6) supérieure.
  2. Article de mobilier suivant la revendication 1, caractérisé par le fait que le cadre rigide inférieur (8) consiste en un profilé tubulaire en forme de "U" présentant une courbure transversale qui coïncide avec le profilé vertical de la zone de transition (7) et qui est fixé au châssis (1) sur les zones d'assise (5) et de dossier (6), près de la zone de transition (7).
  3. Article de mobilier suivant la revendication 1, caractérisé par le fait que la partie supérieure de chaque bride (9) est montée avec liberté partielle de déplacement axial dans un passage défini entre la face interne de la zone de dossier (6) et une plaque de freinage (13) fixée à ce dossier (6), le dossier (6) et la plaque (13) offrant des faces qui se font face pour le déplacement sur la bride, la plaque (13) et la bride (9) étant également pourvues de moyens d'engagement réciproque (16, 17) qui limitent la capacité de déplacement de la bride (9) par rapport à la plaque (13).
  4. Article de mobilier suivant la revendication 3, caractérisé par le fait que les faces de déplacement qui se font face de la plaque (13) et du dossier (6) se composent de nervures longitudinales (15) qui s'appuient contre la bride (9).
  5. Article de mobilier suivant la revendication 3, caractérisé par le fait que les moyens limitant la capacité de déplacement entre la bride (9) et la plaque (13) consistent en une fenêtre (16) présentée par la bride (9) et une saillie (17) lui faisant face qui s'élève depuis la plaque (13) et est introduite via ladite fenêtre (16), la saillie (17) ayant une longueur plus petite que celle de la fenêtre (16), la différence de longueur entre la fenêtre (16) et la saillie (17) définissant la capacité de déplacement de la bride (9) par rapport à la plaque (13).
  6. Article de mobilier suivant la revendication 1, caractérisé par le fait que l'élément matelassé (2) comporte une partie intermédiaire (18) de section transversale lenticulaire coïncidant avec la zone de transition (7) du châssis (1).
  7. Article de mobilier suivant la revendication 1, caractérisé par le fait que le châssis (1) est pourvu, sur sa face interne, de nervures longitudinales (12) de hauteur variable destinées à modifier la capacité de flexion de ce châssis (1) et de pattes (20) auxquelles sont fixées des attaches (21) destinées à la fixation de l'élément matelassé (2).
EP95500026A 1994-04-21 1995-03-01 Meuble d'assise Expired - Lifetime EP0678260B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9530112T SI0678260T1 (en) 1994-04-21 1995-03-01 Item of furniture for sitting

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES09400840A ES2110874B1 (es) 1994-04-21 1994-04-21 Mueble de asiento.
ES9400840 1994-04-21

Publications (2)

Publication Number Publication Date
EP0678260A1 EP0678260A1 (fr) 1995-10-25
EP0678260B1 true EP0678260B1 (fr) 1998-05-06

Family

ID=8285962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95500026A Expired - Lifetime EP0678260B1 (fr) 1994-04-21 1995-03-01 Meuble d'assise

Country Status (7)

Country Link
EP (1) EP0678260B1 (fr)
AT (1) ATE165718T1 (fr)
DE (1) DE69502332T2 (fr)
DK (1) DK0678260T3 (fr)
ES (1) ES2110874B1 (fr)
GR (1) GR3027600T3 (fr)
SI (1) SI0678260T1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
BR112017022038B1 (pt) 2015-04-13 2021-11-03 Steelcase Inc. Disposição de assento
US10966527B2 (en) 2017-06-09 2021-04-06 Steelcase Inc. Seating arrangement and method of construction
AU2020224628A1 (en) 2019-02-21 2021-08-26 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11969094B2 (en) * 2019-06-11 2024-04-30 MillerKnoll, Inc. Chair
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR79649B (fr) * 1982-10-22 1984-10-31 Castelli Spa
AT384537B (de) * 1983-10-19 1987-11-25 Wiesner Hager Kg Arbeitsstuhl
DE3604534A1 (de) * 1986-02-13 1987-08-20 Hartmut Lohmeyer Sitzmoebel mit einem sitz und einer in sich elastisch nachgebenden rueckenlehne
DE3860611D1 (de) * 1987-01-30 1990-10-25 Equus Marketing Ag Stuhl, insbesondere buerostuhl mit einem sitz und einer mehrteiligen rueckenlehne.
CH672882A5 (fr) * 1987-06-09 1990-01-15 Syntech Sa
ES1007486Y (es) * 1988-08-17 1989-08-16 Bodycare, S.A. Almohada lumbar.
AU6426190A (en) * 1989-09-08 1991-04-08 Shelby Williams Industries, Inc. Concealed flexible backrest frame assembly for a chair
US5290093A (en) * 1992-06-15 1994-03-01 Hoover Universal, Inc. Method of seam location using vacuum

Also Published As

Publication number Publication date
DE69502332D1 (de) 1998-06-10
DE69502332T2 (de) 1998-12-17
EP0678260A1 (fr) 1995-10-25
SI0678260T1 (en) 1998-10-31
ES2110874B1 (es) 1998-11-16
ES2110874A2 (es) 1998-02-16
ES2110874R (fr) 1998-04-16
GR3027600T3 (en) 1998-11-30
DK0678260T3 (da) 1999-01-25
ATE165718T1 (de) 1998-05-15

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