WO2008155470A1 - Device for adjusting the slope of the seat base of a seat - Google Patents

Device for adjusting the slope of the seat base of a seat Download PDF

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Publication number
WO2008155470A1
WO2008155470A1 PCT/FR2007/001031 FR2007001031W WO2008155470A1 WO 2008155470 A1 WO2008155470 A1 WO 2008155470A1 FR 2007001031 W FR2007001031 W FR 2007001031W WO 2008155470 A1 WO2008155470 A1 WO 2008155470A1
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WO
WIPO (PCT)
Prior art keywords
seat
support
cam
bar
shell
Prior art date
Application number
PCT/FR2007/001031
Other languages
French (fr)
Inventor
Etienne Girardin
Jean-Antoine Krommenaker
Original Assignee
Steelcase 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 Steelcase Sa filed Critical Steelcase Sa
Priority to PCT/FR2007/001031 priority Critical patent/WO2008155470A1/en
Priority to EP07803767A priority patent/EP2170124A1/en
Publication of WO2008155470A1 publication Critical patent/WO2008155470A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts

Definitions

  • the present invention relates to a device for adjusting the slope of the seat of a seat relative to a support of said seat surmounting the foot of the seat.
  • Such a device allows the user to obtain an inclination of about 5 ° to the front of the seat.
  • the system of the invention operates in all or nothing, that is to say it has two stable positions between which there is no possible adjustment, namely on the one hand a horizontal placement of the sitting and on the other hand an inclined position of about 5 °.
  • This device comprises:
  • the shell is fixed to the support by two transverse bars of the parallel-shaped support, the first bar being disposed in front of said support and the second bar being connected to the cam system (s) and movable between a first position low substantially in the same horizontal plane as the first bar and a second raised position, said bars being rotatably mounted in the shell.
  • the change of relative position between the bars connected to the support and the seat make it necessary to rotate the said bars in the seat shell, without prejudging other constraints related to the attachment of the support to the hull.
  • the second bar is fixed to the end of a pivoting plate in the support, comprising two cams able to pivot between two stable positions corresponding to the low and raised positions of the second bar.
  • the cam system (s) may comprise a shaft rotatably mounted in the plate, at the ends of which are mounted two cams rotated by said shaft.
  • each cam forms an eccentric having a hook-shaped groove comprising an upper rectilinear portion extended in a lower portion rounding in a direction perpendicular to the upper portion, said groove cooperating with a stud protruding laterally from the support, said cam being attached to the shaft near the upper end of the inner wall of the groove.
  • the stud is integral with the support, and allows not only a guide of said cam, but also serves as a stop when it reaches the end of the lower portion of the groove.
  • the inclined stable position is then reached.
  • the other stable position occurs when the stud is in the rectilinear portion of the groove, in line with the axis of rotation of the cam or in its vicinity. This is the horizontal rest position of the seat.
  • control means simply consist of a handle attached to one end of the shaft provided with the cams.
  • the invention also relates to a seat provided with an adjustment system as previously described.
  • FIG. 1 is a partially exploded perspective view of the support of the seat shell
  • FIG. 2 shows a side view of the support and the unassembled seat shell, the adjustment device of the invention being in its horizontal stable position;
  • FIG. 3 is a view similar to Figure 2, in a stable position of inclination.
  • the support (1) has in its upper part two bars (2, 3) provided to be fixed to the shell of the seat (4) (see Figures 2 and 3).
  • the bar (2) is fixed to a plate (5) connected to said support (1) by a pivotal connection materialized by the shaft (6).
  • Two cams (7, 8) are secured to a shaft (9) disposed in the vicinity of the bar (2). These cams comprise a hook-shaped groove composed of a vertical upper portion (10) of vertical appearance connected to a lower portion (11) via a rounded section (12). This lower portion (1 1) is oriented substantially perpendicularly to the upper portion (10).
  • Each cam (7, 8) is actually an eccentric attached to the shaft (9) via an orifice (13) having in this case a rectangular section corresponding to the section of the shaft (9) and allowing a locking in rotation of one with respect to the other.
  • Plots (14, 15) protruding laterally from the support (1) are guided in the aforementioned grooves.
  • One end of the shaft (9) further comprises a control handle (16) allowing the user to print a rotation to said shaft (9), and therefore to the cams (7, 8).
  • the studs (14 and 15) are arranged in the rectilinear portion (10) of the groove. In the raised position appearing in FIG.
  • the studs (14 and 15) are arranged at the end of the lower portion (11). Since the orifice (13) is located closer to the portion (10) than to the portion (11), the plate (5) is naturally rotated about the shaft (6) relative to the rest of the support (1). ) when the user actuates the lever (16), which results in modifying the position of the bar (2) relative to the pads (14, 15), and therefore relative to the support (1).
  • the rear of the seat shell, connected to the bar (2) rises or falls in the direction of the rotation printed on the handle (16), respectively leading to a forward or horizontal inclined position of the 'seated.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Seats For Vehicles (AREA)

Abstract

Device for adjusting the slope of the seat base of a seat with respect to a means of support of said seat base mounted on top of the seat leg. This device comprises: a shell supporting the padded part of the seat base, rotatable with respect to the means of support about a transverse axis located towards the front of the shell; a system comprising at least one cam suitable for moving the seat base shell with respect to the means of support between a first or approximately horizontal position and a second or inclined position; and control means for the cam system.

Description

Dispositif de réglage de la pente de l 'assise d'un siège Device for adjusting the slope of the seat of a seat
La présente invention concerne un dispositif de réglage de la pente de l'assise d'un siège par rapport à un support de ladite assise surmontant le pied du siège.The present invention relates to a device for adjusting the slope of the seat of a seat relative to a support of said seat surmounting the foot of the seat.
Un tel dispositif permet à l'utilisateur d'obtenir une inclinaison d'environ 5° vers l'avant de l'assise. Le système de l'invention fonctionne en tout ou rien, c'est-à-dire qu'il comporte deux positions stables entre lesquelles il n'y a pas de réglage possible, à savoir d'une part un placement horizontal de l'assise et d'autre part une position inclinée d'environ 5°. Ce dispositif comporte :Such a device allows the user to obtain an inclination of about 5 ° to the front of the seat. The system of the invention operates in all or nothing, that is to say it has two stable positions between which there is no possible adjustment, namely on the one hand a horizontal placement of the sitting and on the other hand an inclined position of about 5 °. This device comprises:
- une coque supportant la partie matelassée de l'assise et mobile en rotation par rapport au support selon un axe transversal localisé vers l'avant de la coque ; - un système à au moins une came apte à déplacer la coque de l'assise par rapport au support entre une première position sensiblement horizontale et une seconde position inclinée ;- A shell supporting the padded portion of the seat and movable in rotation relative to the support along a transverse axis located towards the front of the hull; a system with at least one cam adapted to move the shell of the seat relative to the support between a first substantially horizontal position and a second inclined position;
- des moyens de commande du système à came(s).- Control means of the cam system (s).
Plus précisément, la coque est fixée au support par deux barres transversales du support d'allure parallèle, la première barre étant disposée à l'avant dudit support et la seconde barre étant reliée au système à came(s) et déplaçable entre une première position basse sensiblement dans le même plan horizontal que la première barre et une seconde position surélevée, lesdites barres étant montées libres en rotation dans la coque. Le changement de position relative entre les barres liées au support et l'assise rendent nécessaire la liberté en rotation desdites barres dans la coque d'assise, sans préjuger d'autres contraintes liées par ailleurs à la fixation du support à la coque.More specifically, the shell is fixed to the support by two transverse bars of the parallel-shaped support, the first bar being disposed in front of said support and the second bar being connected to the cam system (s) and movable between a first position low substantially in the same horizontal plane as the first bar and a second raised position, said bars being rotatably mounted in the shell. The change of relative position between the bars connected to the support and the seat make it necessary to rotate the said bars in the seat shell, without prejudging other constraints related to the attachment of the support to the hull.
Selon une configuration possible, la seconde barre est fixée à l'extrémité d'une platine pivotante dans le support, comportant deux cames aptes à pivoter entre deux positions stables correspondant aux positions basse et surélevée de la seconde barre.According to one possible configuration, the second bar is fixed to the end of a pivoting plate in the support, comprising two cams able to pivot between two stable positions corresponding to the low and raised positions of the second bar.
Plus précisément, le système à came(s) peut comporter un arbre monté libre en rotation dans la platine, aux extrémités duquel sont montées deux cames entraînées en rotation par ledit arbre.More specifically, the cam system (s) may comprise a shaft rotatably mounted in the plate, at the ends of which are mounted two cams rotated by said shaft.
En d'autres termes, lorsque les cames sont actionnées en rotation, elles font monter la barre disposée la plus à l'arrière relativement à la coque de l'assise par rapport à la barre avant, qui peut être considérée comme l'axe de rotation de la coque. Selon une possibilité, chaque came forme un excentrique présentant une gorge en forme de crochet comportant une portion rectiligne supérieure prolongée en une portion inférieure s'arrondissant dans une direction perpendiculaire à la portion supérieure, ladite gorge coopérant avec un plot dépassant latéralement du support, ladite came étant fixée à l'arbre au voisinage de l'extrémité supérieure de la paroi intérieure de la gorge.In other words, when the cams are actuated in rotation, they cause the rearmost bar relative to the seat shell to rise relative to the front bar, which can be considered as the axis of rotation. rotation of the hull. According to one possibility, each cam forms an eccentric having a hook-shaped groove comprising an upper rectilinear portion extended in a lower portion rounding in a direction perpendicular to the upper portion, said groove cooperating with a stud protruding laterally from the support, said cam being attached to the shaft near the upper end of the inner wall of the groove.
Le plot est solidaire du support, et permet non seulement un guidage de ladite came, mais fait également office de butée lorsqu'il atteint l'extrémité de la portion inférieure de la gorge. La position stable inclinée est alors atteinte. A l'inverse, lorsque le mouvement inverse est imprimé à la came, l'autre position stable survient lorsque le plot se trouve dans la portion rectiligne de la gorge, au droit de l'axe de rotation de la came ou à son voisinage. Il s'agit alors de la position de repos horizontale de l'assise.The stud is integral with the support, and allows not only a guide of said cam, but also serves as a stop when it reaches the end of the lower portion of the groove. The inclined stable position is then reached. Conversely, when the reverse movement is printed on the cam, the other stable position occurs when the stud is in the rectilinear portion of the groove, in line with the axis of rotation of the cam or in its vicinity. This is the horizontal rest position of the seat.
Selon une configuration possible, les moyens de commande consistent simplement en une manette fixée à l'une des extrémités de l'arbre doté des cames.According to one possible configuration, the control means simply consist of a handle attached to one end of the shaft provided with the cams.
L'invention concerne également un siège muni d'un système de réglage tel que décrit auparavant.The invention also relates to a seat provided with an adjustment system as previously described.
La présente invention va maintenant être décrite en détail, en référence aux figures annexées, pour lesquelles :The present invention will now be described in detail, with reference to the appended figures, for which:
- la figure 1 est une vue en perspective partiellement éclatée du support de la coque d'assise ;- Figure 1 is a partially exploded perspective view of the support of the seat shell;
- la figure 2 représente une vue de côté du support et de la coque d'assise non assemblés, le dispositif de réglage de l'invention étant dans sa position stable horizontale ; et- Figure 2 shows a side view of the support and the unassembled seat shell, the adjustment device of the invention being in its horizontal stable position; and
- la figure 3 est une vue similaire à la figure 2, en position stable d'inclinaison. En référence à la figure 1 , le support (1) comporte en sa partie supérieure deux barres (2, 3) prévues pour être fixées à la coque de l'assise (4) (voir en figures 2 et 3). La barre (2) est fixée à une platine (5) reliée au dit support (1 ) par une liaison à pivotement matérialisée par l'arbre (6). Deux cames (7, 8) sont solidarisées à un arbre (9) disposé au voisinage de la barre (2). Ces cames comportent une gorge en forme de crochet composée d'une portion supérieure (10) rectiligne d'allure verticale reliée à une portion inférieure (11 ) via un tronçon arrondi (12). Cette portion inférieure (1 1 ) s'oriente sensiblement perpendiculairement à la portion supérieure (10). Chaque came (7, 8) est en réalité un excentrique fixé à l'arbre (9) via un orifice (13) présentant en l'espèce une section rectangulaire correspondant à la section de l'arbre (9) et permettant un blocage en rotation de l'un par rapport à l'autre. Des plots (14, 15) dépassant latéralement du support (1) sont guidés dans les gorges précitées. L'une des extrémités de l'arbre (9) comporte par ailleurs une manette de commande (16) permettant à l'utilisateur d'imprimer une rotation au dit arbre (9), et par conséquent aux cames (7, 8). Dans la position horizontale de la coque (4), telle qu'elle apparaît en figure 2, les plots (14 et 15) sont disposés dans la portion rectiligne (10) de la gorge. Dans la position surélevée apparaissant en figure 3, les plots (14 et 15) sont disposés à l'extrémité de la portion inférieure (11). L'orifice (13) étant situé plus proche de la portion (10) que de la portion (11 ), la platine (5) est naturellement conduite à pivoter autour de l'arbre (6) par rapport au reste du support (1) lorsque l'utilisateur actionne la manette (16), ce qui aboutit à modifier la position de la barre (2) par rapport aux plots (14, 15), et par conséquent par rapport au support (1). L'arrière de la coque de l'assise, relié à la barre (2), monte ou descend selon le sens de la rotation imprimée à la manette (16), aboutissant respectivement à une position inclinée vers l'avant ou horizontale de l'assise. - Figure 3 is a view similar to Figure 2, in a stable position of inclination. Referring to Figure 1, the support (1) has in its upper part two bars (2, 3) provided to be fixed to the shell of the seat (4) (see Figures 2 and 3). The bar (2) is fixed to a plate (5) connected to said support (1) by a pivotal connection materialized by the shaft (6). Two cams (7, 8) are secured to a shaft (9) disposed in the vicinity of the bar (2). These cams comprise a hook-shaped groove composed of a vertical upper portion (10) of vertical appearance connected to a lower portion (11) via a rounded section (12). This lower portion (1 1) is oriented substantially perpendicularly to the upper portion (10). Each cam (7, 8) is actually an eccentric attached to the shaft (9) via an orifice (13) having in this case a rectangular section corresponding to the section of the shaft (9) and allowing a locking in rotation of one with respect to the other. Plots (14, 15) protruding laterally from the support (1) are guided in the aforementioned grooves. One end of the shaft (9) further comprises a control handle (16) allowing the user to print a rotation to said shaft (9), and therefore to the cams (7, 8). In the horizontal position of the shell (4), as it appears in FIG. 2, the studs (14 and 15) are arranged in the rectilinear portion (10) of the groove. In the raised position appearing in FIG. 3, the studs (14 and 15) are arranged at the end of the lower portion (11). Since the orifice (13) is located closer to the portion (10) than to the portion (11), the plate (5) is naturally rotated about the shaft (6) relative to the rest of the support (1). ) when the user actuates the lever (16), which results in modifying the position of the bar (2) relative to the pads (14, 15), and therefore relative to the support (1). The rear of the seat shell, connected to the bar (2), rises or falls in the direction of the rotation printed on the handle (16), respectively leading to a forward or horizontal inclined position of the 'seated.

Claims

REVENDICATIONS
1. Dispositif de réglage de la pente de l'assise d'un siège par rapport à un support de ladite assise surmontant le pied du siège, et comportant : - une coque supportant la partie matelassée de l'assise et mobile en rotation par rapport au support selon un axe transversal localisé vers l'avant de la coque ;1. Device for adjusting the slope of the seat of a seat relative to a support of said seat surmounting the foot of the seat, and comprising: - a shell supporting the padded portion of the seat and movable in rotation relative to the support along a transverse axis located towards the front of the hull;
- un système à au moins une came apte à déplacer la coque de l'assise par rapport au support entre une première position sensiblement horizontale et une seconde position inclinée ;a system with at least one cam adapted to move the shell of the seat relative to the support between a first substantially horizontal position and a second inclined position;
- des moyens de commande du système à came(s).- Control means of the cam system (s).
2. Dispositif de réglage selon la revendication précédente, caractérisé en ce que la coque est fixée au support par deux barres transversales du support d'allure parallèle, la première barre étant disposée à l'avant dudit support et la seconde barre étant reliée au système à came(s) et déplaçable entre une première position basse sensiblement dans le même plan horizontal que la première barre et une seconde position surélevée, lesdites barres étant montées libres en rotation dans la coque.2. Adjusting device according to the preceding claim, characterized in that the shell is fixed to the support by two transverse bars of the parallel-shaped support, the first bar being disposed in front of said support and the second bar being connected to the system. cam (s) and movable between a first low position substantially in the same horizontal plane as the first bar and a second raised position, said bars being rotatably mounted in the shell.
3. Dispositif de réglage selon la revendication précédente, caractérisé en ce que la seconde barre est fixée à l'extrémité d'une platine pivotante dans le support, comportant deux cames aptes à pivoter entre deux positions stables correspondant aux positions basse et surélevée de la seconde barre.3. Adjusting device according to the preceding claim, characterized in that the second bar is fixed to the end of a pivoting plate in the support, having two cams pivotable between two stable positions corresponding to the low and raised positions of the second bar.
4. Dispositif de réglage selon la revendication précédente, caractérisé en ce que le système à came(s) comporte un arbre monté libre en rotation sur la platine, aux extrémités duquel sont montées deux cames entraînées en rotation par ledit arbre.4. Adjustment device according to the preceding claim, characterized in that the cam system (s) comprises a shaft mounted free to rotate on the plate, at the ends of which are mounted two cams rotated by said shaft.
5. Dispositif de réglage selon la revendication précédente, caractérisé en ce que chaque came forme un excentrique présentant une gorge en forme de crochet comportant une portion rectiligne supérieure prolongée en une portion inférieure s'arrondissant dans une direction perpendiculaire à la portion supérieure, ladite gorge coopérant avec un plot dépassant latéralement du support, ladite came étant fixée à l'arbre au voisinage de l'extrémité supérieure de la paroi intérieure de la gorge. 5. Adjusting device according to the preceding claim, characterized in that each cam forms an eccentric having a hook-shaped groove having an upper rectilinear portion extended in a lower portion rounding in a direction perpendicular to the upper portion, said throat cooperating with a stud projecting laterally from the support, said cam being fixed to the shaft in the vicinity of the upper end of the inner wall of the groove.
6. Dispositif de réglage selon l'une des revendications 4 et 5, caractérisé en ce que les moyens de commande consistent en une manette fixée à l'une des extrémités de l'arbre doté des cames. 6. Adjustment device according to one of claims 4 and 5, characterized in that the control means consist of a handle attached to one end of the shaft with the cams.
7. Siège muni d'un système de réglage de la pente de l'assise selon l'une des revendications 1 à 6. Seat with a seat slope adjustment system according to one of claims 1 to 6.
PCT/FR2007/001031 2007-06-20 2007-06-20 Device for adjusting the slope of the seat base of a seat WO2008155470A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/FR2007/001031 WO2008155470A1 (en) 2007-06-20 2007-06-20 Device for adjusting the slope of the seat base of a seat
EP07803767A EP2170124A1 (en) 2007-06-20 2007-06-20 Device for adjusting the slope of the seat base of a seat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR2007/001031 WO2008155470A1 (en) 2007-06-20 2007-06-20 Device for adjusting the slope of the seat base of a seat

Publications (1)

Publication Number Publication Date
WO2008155470A1 true WO2008155470A1 (en) 2008-12-24

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Family Applications (1)

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PCT/FR2007/001031 WO2008155470A1 (en) 2007-06-20 2007-06-20 Device for adjusting the slope of the seat base of a seat

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EP (1) EP2170124A1 (en)
WO (1) WO2008155470A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021180324A1 (en) 2020-03-12 2021-09-16 Steelcase Inc. Device for adjusting the slope of the seat base of a seat

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29718651U1 (en) * 1997-10-22 1998-02-26 Karl Woempner Gmbh Seating
EP1576905A1 (en) 2004-03-17 2005-09-21 Sedus Stoll AG Chair with adjustable seat

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29718651U1 (en) * 1997-10-22 1998-02-26 Karl Woempner Gmbh Seating
EP1576905A1 (en) 2004-03-17 2005-09-21 Sedus Stoll AG Chair with adjustable seat

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021180324A1 (en) 2020-03-12 2021-09-16 Steelcase Inc. Device for adjusting the slope of the seat base of a seat

Also Published As

Publication number Publication date
EP2170124A1 (en) 2010-04-07

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