BE464380A - - Google Patents
Info
- Publication number
- BE464380A BE464380A BE464380DA BE464380A BE 464380 A BE464380 A BE 464380A BE 464380D A BE464380D A BE 464380DA BE 464380 A BE464380 A BE 464380A
- Authority
- BE
- Belgium
- Prior art keywords
- backrest
- elastic
- chair
- crutch
- seat
- Prior art date
Links
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
- A47C7/44—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
- 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
Landscapes
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Chairs Characterized By Structure (AREA)
Description
<Desc/Clms Page number 1>
Chaise à dossier élastique,
La présente invention est relative à une chaise à dossier élastique.
On connaît déjà des chaises de ce genre qui ont cependant l'inconvénient que le dossier peut céder trop facilement vers l'arrière lorsque le ressort est réglé pour n'être tendu que faiblement et qu'il se laisse alors repousser sans effort jusqu'à l'amplitude maximum du basculement. Par contre, lorsque le ressort est fortement tendu, la pression exercée sur le dos est trop élevée et l'élasti- cité est alors insuffisante.
<Desc/Clms Page number 2>
Suivant l'invention, cet inconvénient des chaises de ce genre doit être évité par le fait que le dossier est monté basculant sur un support fixe etqu'une béquille élastique est articulée, d'une part, sur le dossier et, d'autre part, sur le siège de telle manière qu'elle oppose au basculement du dossier une résistance qui augmente au fur et à mesare que l'angle d'inclinaison devient plus grand. On obtient de cette façon une suspension élastique du dossier d'un effekt très agréable.
De préférence, la béquille élastique est formée par un ressort à lame coudé qui se déforme élastiquement lors du basculement du dossier.
Le point d'articulation de la béquille élastique sur le dossier peut être réglable en hauteur pour permettre le réglage de la souplesse du dossier.
D'autre part, le point d'articulation de la béquille élastique sur le siège peut être réglable vers l'avant et vers l'arrière pour permettre le réglage de l'angle d'inclinaison du dossier dans la positition de repos.
Le dessin annexé est une vue en coupe verticale d'une chaise montrant un mode de réalisation de l'objet de l'invention.
Le dossier 1 peut basculer sur un support fixe 3, autour d'un axe de pivotement 2. Ce support est rigidement
<Desc/Clms Page number 3>
fixé sur la face inférieure du siège 4. Une béquille élastique, formée par un ressort à lame coudé 5, est articulée à une extrémité par un axe 6 sur le dossier 1, et à l'autre extrémité sur le siège 4 par un axe 7. Lors du basculement du dossier 1 autour de l'axe 2, le ressort à lame 5 n'oppose tout d'abord au mouvement de basculement qu'une faible résistance car, ainsi que le montre les arcs de cercles tracés sur le dessin, le ressort à lame 5 ne se déforme d'abord que faiblement au début du basculement.
'Mais lorsque l'angle d'inclinaison du dossier 1 devient plus grand, la résistance augmente rapidement étant donné que le ressort à lame 5 doit se déformer de plus en plus fortement. L'angle d'inclinaison est ainsi limité même sans aucune butée et la suspension élastique est très agréable.
Le point d'articulation 6 du ressort à lame 5 sur le dossier 1 peut être réglé en hauteur, ce qui permet de régler également la souplesse du dossier.
' D'autre part, le point d'articulation 7 du ressort à lame 5 sur le siège 4 peut être déplacé vers l'avant et vers l'arrière, ce qui permet de régler l'angle d'inclinaison du dossier dans sa position de repos.
<Desc / Clms Page number 1>
Chair with elastic back,
The present invention relates to a chair with an elastic backrest.
Chairs of this type are already known which, however, have the drawback that the backrest can yield too easily towards the rear when the spring is adjusted to be tensioned only slightly and that it can then be pushed back without effort until the maximum amplitude of the tilt. On the other hand, when the spring is strongly tensioned, the pressure exerted on the back is too high and the elasticity is then insufficient.
<Desc / Clms Page number 2>
According to the invention, this drawback of chairs of this type must be avoided by the fact that the backrest is tiltably mounted on a fixed support and that an elastic crutch is articulated, on the one hand, on the backrest and, on the other hand , on the seat in such a way that it opposes the tilting of the backrest a resistance which increases as the angle of inclination becomes greater. In this way, an elastic suspension of the backrest is obtained with a very pleasant effect.
Preferably, the elastic crutch is formed by an angled leaf spring which deforms elastically when the backrest is tilted.
The articulation point of the elastic crutch on the backrest can be adjustable in height to allow the flexibility of the backrest to be adjusted.
On the other hand, the point of articulation of the elastic crutch on the seat can be adjustable forwards and backwards to allow the adjustment of the angle of inclination of the backrest in the rest position.
The accompanying drawing is a vertical sectional view of a chair showing an embodiment of the object of the invention.
The backrest 1 can tilt on a fixed support 3, around a pivot axis 2. This support is rigidly
<Desc / Clms Page number 3>
fixed on the underside of the seat 4. An elastic crutch, formed by an angled leaf spring 5, is articulated at one end by a pin 6 on the backrest 1, and at the other end on the seat 4 by a pin 7 When tilting the backrest 1 around the axis 2, the leaf spring 5 initially opposes the tilting movement only a low resistance because, as shown by the arcs of circles drawn in the drawing, the leaf spring 5 initially deforms only slightly at the start of tilting.
But as the angle of inclination of the backrest 1 becomes larger, the resistance increases rapidly since the leaf spring 5 has to deform more and more strongly. The tilt angle is thus limited even without any stopper and the elastic suspension is very pleasant.
The articulation point 6 of the leaf spring 5 on the backrest 1 can be adjusted in height, which also makes it possible to adjust the flexibility of the backrest.
'On the other hand, the articulation point 7 of the leaf spring 5 on the seat 4 can be moved forwards and backwards, which makes it possible to adjust the angle of inclination of the backrest in its position. rest.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH243823X | 1945-04-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE464380A true BE464380A (en) | 1946-05-31 |
Family
ID=4548429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE464380D BE464380A (en) | 1945-04-13 | 1946-04-09 |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE464380A (en) |
CH (1) | CH243823A (en) |
DE (1) | DE813760C (en) |
FR (1) | FR925555A (en) |
GB (1) | GB610741A (en) |
NL (1) | NL62657C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0539377A1 (en) * | 1990-04-10 | 1993-05-05 | Charles O. Perry | High density stacking flex chair |
US5383712A (en) * | 1988-04-25 | 1995-01-24 | Perry; Charles O. | Flexible chair |
US6224159B1 (en) | 1999-05-12 | 2001-05-01 | Charles Owen Perry | Flexible chair which can be disassembled to a flat configuration |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3700862A1 (en) * | 1987-01-14 | 1988-07-28 | Vogt Bueromoebel | Seating furniture |
US5338094A (en) * | 1988-04-25 | 1994-08-16 | Perry Charles O | Flexible reclining chair |
US5100201A (en) * | 1990-09-21 | 1992-03-31 | J.G. Furniture Systems Inc. | Passive ergonomic work chair |
US5626394A (en) * | 1995-06-07 | 1997-05-06 | Perry; Charles O. | Tubular chair frame |
JP4719905B2 (en) | 2005-10-27 | 2011-07-06 | コクヨ株式会社 | Chair |
JP5002835B2 (en) | 2005-10-27 | 2012-08-15 | コクヨ株式会社 | Member connection structure |
JP4945781B2 (en) | 2005-11-11 | 2012-06-06 | コクヨ株式会社 | Chair |
JP4747311B2 (en) | 2005-11-11 | 2011-08-17 | コクヨ株式会社 | Chair |
JP4721183B2 (en) * | 2005-11-11 | 2011-07-13 | コクヨ株式会社 | Spring mounting structure |
US8939508B2 (en) | 2008-05-13 | 2015-01-27 | Chokchai Charoenapornwatana | Chairs with flexible spring backrest |
US8998339B2 (en) | 2012-09-20 | 2015-04-07 | Steelcase Inc. | Chair assembly with upholstery covering |
US11304528B2 (en) | 2012-09-20 | 2022-04-19 | Steelcase Inc. | Chair assembly with upholstery covering |
US11229294B2 (en) | 2012-09-20 | 2022-01-25 | Steelcase Inc. | Chair assembly with upholstery covering |
WO2020172243A1 (en) | 2019-02-21 | 2020-08-27 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
US11357329B2 (en) | 2019-12-13 | 2022-06-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
WO2021178206A1 (en) | 2020-03-02 | 2021-09-10 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
US11812870B2 (en) | 2021-02-10 | 2023-11-14 | Steelcase Inc. | Body support structure |
CN114376567B (en) * | 2022-02-18 | 2023-09-15 | 上海体育学院 | Intelligent diagnosis and treatment posture evaluation system |
-
0
- NL NL62657D patent/NL62657C/xx active
-
1945
- 1945-04-13 CH CH243823D patent/CH243823A/en unknown
-
1946
- 1946-04-09 BE BE464380D patent/BE464380A/fr unknown
- 1946-04-10 GB GB11045/46A patent/GB610741A/en not_active Expired
- 1946-04-12 FR FR925555D patent/FR925555A/en not_active Expired
-
1949
- 1949-10-29 DE DEST97A patent/DE813760C/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5383712A (en) * | 1988-04-25 | 1995-01-24 | Perry; Charles O. | Flexible chair |
USRE36335E (en) * | 1988-04-25 | 1999-10-12 | Perry; Charles O. | Flexible chair |
EP0539377A1 (en) * | 1990-04-10 | 1993-05-05 | Charles O. Perry | High density stacking flex chair |
EP0539377A4 (en) * | 1990-04-10 | 1993-06-16 | Charles O. Perry | High density stacking flex chair |
US6224159B1 (en) | 1999-05-12 | 2001-05-01 | Charles Owen Perry | Flexible chair which can be disassembled to a flat configuration |
Also Published As
Publication number | Publication date |
---|---|
DE813760C (en) | 1951-09-17 |
GB610741A (en) | 1948-10-20 |
FR925555A (en) | 1947-09-08 |
NL62657C (en) | 1949-03-15 |
CH243823A (en) | 1946-08-15 |
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