EP0574375B1 - Chaise de travail, notamment chaise de bureau - Google Patents
Chaise de travail, notamment chaise de bureau Download PDFInfo
- Publication number
- EP0574375B1 EP0574375B1 EP93890114A EP93890114A EP0574375B1 EP 0574375 B1 EP0574375 B1 EP 0574375B1 EP 93890114 A EP93890114 A EP 93890114A EP 93890114 A EP93890114 A EP 93890114A EP 0574375 B1 EP0574375 B1 EP 0574375B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bearing
- seat surface
- seat
- chair
- disc
- 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
Links
Images
Classifications
-
- 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 work armchair, in particular office armchair, with a seat, a backrest and a support frame, which has a preferably height-adjustable, resiliently flexible bearing for the seat.
- Sitting for long periods on an immobile seat leads to strain on the spine in poor posture and, as a result, to pain, spinal disc damage and disorders of the musculoskeletal system. Only a constant change of the sitting postures can counteract static overloads. For this it is necessary to mount the seat flexibly and to ensure that the seat can be shifted with little effort. This enables rocking not only to allow natural muscle relaxation, but also to relieve the vertebral joints and improve nutrition of the intervertebral discs.
- the bearing Since the bearing is located in the middle of the seat, the load line on the spine of an armchair user runs outside of this bearing, which, due to the horizontal distance between the center of gravity of the trunk and the center of the bearing, leads to a considerable shear load on the rubber body, especially when tipping backwards leads if these thrust forces can not be absorbed through the support column passing through the bearing.
- the bearing loads that occur when the seat is tilted can be absorbed by the pretension of the rubber body, but this pretension causes considerable physical forces to adjust the inclination of the seat. This is particularly disadvantageous because the given transmission ratios require a higher force to tilt the seat surface from the outset, so that the spine is inevitably stressed in incorrect posture.
- the invention is therefore based on the object of designing a work armchair of the type described at the outset in such a way that sitting in any sitting posture which is harmless to the body or posture is made possible with little construction effort.
- the invention solves the problem in that the bearing for the seat is arranged in the rear third and that the load line of the spine in the neutral position of an armchair user runs approximately through the center of the bearing.
- the advantageous position of the center of gravity of the fuselage relative to the bearing for the seat surface results in comparatively small horizontal distances of the center of gravity of the fuselage from the center of the bearing even at larger angles of inclination of the seat surface, which results in an advantageous reduction in the thrust forces acting on the bearing, so that the bearing is made from a simple, the height can consist of resilient, non-prestressed washer which does not have to be penetrated by a support column or the like.
- the lack of pretension not only allows for a simplification of the design, but also supports the movement of the seat with little effort. There is also no need for special means for limiting the deflection and for reducing noise.
- the disc yields in all directions, effectively represents an additional intervertebral disc and acts as an optimal pressure distribution medium.
- the work chair has a support frame 1 with a star-shaped foot 2 and with a support column 3, which can be extended telescopically and can be fixed in the desired length for height adjustment of a seat 5 by means of a screw 4 or the like.
- a separate backrest 6 is provided, the holder 7 of which is pivotally mounted on a cross member 8 of the support column 3 and can be pivoted backward against the force of a return spring in a stop-limited manner.
- an elastically flexible, disc-shaped bearing 9 is provided on all sides, which is arranged in the rear third of the seat 5.
- the load line 10 of the spine of an armchair user in its neutral position runs approximately through the center of the bearing.
- FIGS. 1 to 4 From the representations of FIGS. 1 to 4 it follows that the seat 5, due to its special positioning, follows all body movements, the load line 10 of the spine seeking adaptation to the vertical if the body is not supported by the arms or the backrest, like this for posture after work Fig. 2 and for the reclined relaxation posture according to Fig. 3 is the case.
- the seat 5 tilts forward and thus prevents the pressure on the thighs from being increased by the seat.
- FIG. 4 there is a favorable, namely uniform loading of the intervertebral discs and vertebral joints due to the inclination of the seat surface 5 following the body.
- FIG. 4 To better illustrate this situation, the illustration of the backrest 6 has been omitted in FIG.
- the bearing 9 consists of a rubber washer 12 vulcanized between two metal plates 11, the two metal plates 11 each having two threaded bores 13 offset by 90 ° for connection to the support column 3 or the cross member 8 and the seat 5.
- the bearing 9 according to FIG. 6 has a rubber body 15 divided into several chambers 14, the chambers 14 of which can be filled with water, air or a gel.
- the filling pressure of the innermost chamber 14 can advantageously be chosen to be lower than the filling pressure of the outer chambers.
- the bearing 9 can advantageously be arranged interchangeably between the seat surface 5 and the support frame 1 in order to be able to use bearings of different hardness to adapt to the body weight of the chair user.
- the design of the bearing 9 is not important if there is only a corresponding resilience in height in order to ensure that the seat surface 5 can be pivoted to a limited extent, as is also the case when using annular disks or disks dissolved in elastic individual bodies is.
- Another possibility of adapting the bearings 9 to the body weight of an armchair user is to provide resiliently flexible disks of different diameters. Different disc diameters can also be ensured, however, by providing additional rings 16, which are designed to be resilient in height and, for example, made of a rubber-elastic one Material. These additional rings 16 can enclose a base plate, as is indicated in FIG. 7. The width of the additional ring 16 can be different if the use of several additional rings 16 is avoided.
Landscapes
- Chairs Characterized By Structure (AREA)
- Saccharide Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Claims (5)
- Siège de travail, et en particulier siège de bureau, comprenant une assise (5), un dossier (6) et une structure porteuse (1), celle-ci présentant un support qui est destiné à l'assise (5) et qui peut céder élastiquement de tous les côtés, caractérisé par le fait que le support (9) qui est destiné à l'assise (5) est disposé dans le tiers arrière de celle-ci, et par le fait que la ligne de charge (10) de la colonne vertébrale passe à peu près par le milieu du support (9) dans la position neutre d'un utilisateur du siège.
- Siège de travail selon la revendication 1, caractérisé par le fait que le support (9) est constitué par un disque qui n'est pas précontraint et qui peut céder élastiquement de tous les côtés dans le sens de la hauteur.
- Siège de travail selon la revendication 2, caractérisé par le fait que le disque du support (9) qui est destiné à l'assise (5) peut être remplacé par des disques de différentes duretés.
- Siège de travail selon la revendication 2, caractérisé par le fait que le disque du support (9) qui est destiné à l'assise (5) peut être remplacé par des disques de différents diamètres.
- Siège de travail selon l'une des revendications 1 à 4, caractérisé par le fait que le diamètre actif du disque du support (9) qui est destiné à l'assise (5) peut être augmenté par des couronnes additionnelles (16) qui peuvent céder élastiquement dans le sens de la hauteur.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT1181/92 | 1992-06-10 | ||
AT0118192A AT398160B (de) | 1992-06-10 | 1992-06-10 | Arbeitssessel, insbesondere bürosessel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0574375A1 EP0574375A1 (fr) | 1993-12-15 |
EP0574375B1 true EP0574375B1 (fr) | 1996-01-10 |
Family
ID=3508368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93890114A Expired - Lifetime EP0574375B1 (fr) | 1992-06-10 | 1993-06-07 | Chaise de travail, notamment chaise de bureau |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0574375B1 (fr) |
AT (2) | AT398160B (fr) |
DE (1) | DE59301389D1 (fr) |
DK (1) | DK0574375T3 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6176548B1 (en) | 1998-10-23 | 2001-01-23 | Haworth, Inc. | Tilt mechanism for chair having adjustable spring characteristics |
US6209958B1 (en) | 1998-10-23 | 2001-04-03 | Haworth, Inc. | Universal tilt mechanism for a chair |
CN101522075B (zh) * | 2006-03-24 | 2012-03-28 | Hni技术公司 | 增强可调节性的躺椅 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4421597A1 (de) * | 1994-06-21 | 1996-01-04 | Link Wilhelm Kg | Stuhl, insbesondere Bürostuhl |
DE19547964A1 (de) * | 1995-12-21 | 1997-06-26 | Wolfgang Dr Fitz | Sitzelement |
US5951109A (en) * | 1997-04-30 | 1999-09-14 | Haworth, Inc. | Chairback with side torsional movement |
US6059363A (en) * | 1997-04-30 | 2000-05-09 | Haworth, Inc. | Chairback with side torsional movement |
DE50006068D1 (de) * | 1999-02-02 | 2004-05-19 | Oliver Keller | Dynamische sitzvorrichtung |
DE10020668A1 (de) * | 2000-04-27 | 2001-10-31 | Fritz Curtius | Sitzmöbel |
CA2895942A1 (fr) | 2007-03-13 | 2008-09-13 | Hni Technologies Inc. | Systeme dynamique de support lombaire pour dossier |
JP6039544B2 (ja) | 2010-05-05 | 2016-12-07 | オールスティール インコーポレイテッドAllsteel Inc. | ガラス突き合わせ壁パネルのための可動式の解体可能な壁パネルシステムの設置方法 |
CN102940396A (zh) * | 2012-12-01 | 2013-02-27 | 郭现娟 | 一种多功能学习椅 |
CA2906736C (fr) | 2013-03-15 | 2021-11-02 | Hni Technologies Inc. | Chaise ayant une flexion arriere activee |
USD731833S1 (en) | 2014-04-17 | 2015-06-16 | Allsteel Inc. | Chair |
US10064493B2 (en) | 2014-04-17 | 2018-09-04 | Hni Technologies Inc. | Flex lumbar support |
US9801470B2 (en) | 2014-10-15 | 2017-10-31 | Hni Technologies Inc. | Molded chair with integrated support and method of making same |
USD743180S1 (en) | 2014-10-15 | 2015-11-17 | Hni Technologies Inc. | Chair |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3309137A (en) * | 1966-05-13 | 1967-03-14 | Aaron A Wiebe | Seating arrangement |
US3547393A (en) * | 1968-01-08 | 1970-12-15 | Hickory Springs Mfg Co Inc | Rocker-swivel device |
DE2055684A1 (de) * | 1970-11-12 | 1972-05-18 | Walcher Geb Endrich E | Sitzgelegenheit |
DE2303442A1 (de) * | 1973-01-25 | 1974-08-01 | Fletcher Brothers Castings Ltd | Moebel, insbesondere sitzmoebel |
US4131260A (en) * | 1977-05-09 | 1978-12-26 | Center For Design Research And Development N.V. | Chair seat mount which permits the seat to tilt forward |
CH678388A5 (fr) * | 1989-04-25 | 1991-09-13 | Hugo Degen | |
IT1234373B (it) * | 1989-08-04 | 1992-05-15 | Kairos Snc Bonetti Manete Mion | Dispositivo di supporto del sedile di poltroncine e simili ad inclinazione autocontrollata. |
US5048893A (en) * | 1990-07-16 | 1991-09-17 | Benjamin Cowan | Ergonomic chair |
-
1992
- 1992-06-10 AT AT0118192A patent/AT398160B/de not_active IP Right Cessation
-
1993
- 1993-06-07 DE DE59301389T patent/DE59301389D1/de not_active Expired - Fee Related
- 1993-06-07 EP EP93890114A patent/EP0574375B1/fr not_active Expired - Lifetime
- 1993-06-07 AT AT93890114T patent/ATE132710T1/de not_active IP Right Cessation
- 1993-06-07 DK DK93890114.7T patent/DK0574375T3/da not_active Application Discontinuation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6176548B1 (en) | 1998-10-23 | 2001-01-23 | Haworth, Inc. | Tilt mechanism for chair having adjustable spring characteristics |
US6209958B1 (en) | 1998-10-23 | 2001-04-03 | Haworth, Inc. | Universal tilt mechanism for a chair |
CN101522075B (zh) * | 2006-03-24 | 2012-03-28 | Hni技术公司 | 增强可调节性的躺椅 |
Also Published As
Publication number | Publication date |
---|---|
EP0574375A1 (fr) | 1993-12-15 |
ATE132710T1 (de) | 1996-01-15 |
ATA118192A (de) | 1994-02-15 |
DK0574375T3 (da) | 1996-05-20 |
AT398160B (de) | 1994-10-25 |
DE59301389D1 (de) | 1996-02-22 |
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