EP0156814A1 - Articulated seat. - Google Patents
Articulated seat.Info
- Publication number
- EP0156814A1 EP0156814A1 EP84902922A EP84902922A EP0156814A1 EP 0156814 A1 EP0156814 A1 EP 0156814A1 EP 84902922 A EP84902922 A EP 84902922A EP 84902922 A EP84902922 A EP 84902922A EP 0156814 A1 EP0156814 A1 EP 0156814A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seat
- articulated
- backrest
- support
- axis
- 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.)
- Granted
Links
- 230000005484 gravity Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 abstract description 6
- 238000012986 modification Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 11
- 230000009471 action Effects 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000003831 antifriction material Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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
- A47C1/14—Beach chairs ; Chairs for outdoor use, e.g. chairs for relaxation or sun-tanning
- A47C1/143—Chaise lounges
-
- 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
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/034—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest
- A47C1/035—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest in combination with movably coupled seat and back-rest, i.e. the seat and back-rest being movably coupled in such a way that the extension mechanism of the foot-rest is actuated at least by the relative movements of seat and backrest
Definitions
- the present invention relates to an articulated seat which allows the user to continuously modify the relative positions of the backrest and the seat, without significant effort and without having to get up from the seat.
- a seat has been described comprising at least one backrest and one seat articulated together along a movable axis, the backrest being articulated to a support along an axis parallel to the aforementioned axis, this file and this seat being continuously movable relative to each other between a position in which the file is substantially vertical and the seat substantially horizontal and a position in which the file and the seat are substantially horizontal.
- this seat is characterized in that at least the movement of the seat is guided opposite its axis of articulation on the backrest according to a curve chosen so that when the backrest and the seat move between the two aforementioned positions, the center of gravity of the seat user's body deviates little from a horizontal plane and the user is therefore in a situation very close to balance, which allows him to only need to exert very light pressure on the seat or on the backrest to change his position on the seat.
- the main advantage of this seat is that it allows its user to modify the relative positions of the backrest and seat by exerting on them efforts so minimal that they are acceptable even for the elderly and people with physical disabilities .
- the object of the present invention is to propose several alternative embodiments of such a seat, perfecting the embodiments described in the aforementioned French patent.
- the first variant concerns a seat with a footrest articulated on the seat.
- the seat comprises, in addition to its seat and its backrest, a footrest which is articulated on the seat following an articulation parallel to the seat-back and back-support articulations and moves, like the backrest, between a substantially vertical position and a substantially horizontal position by means of idler rollers mounted on the footrest and which are guided in appropriate grooves arranged on the seat.
- One of the aims of the present invention is to improve such seats with a footrest articulated on the seat.
- this seat is characterized in that it comprises a footrest articulated on the seat according to an articulation parallel to the articulations seat-backrest and backrest support and means for connecting in an articulated manner the footrest to a part of the backrest located beyond the seat-backrest joint with respect to the backrest-support joint, in such a way that any modification of the angular position of the backrest relative to its support ensures an angular modification of the footrest with respect to at the seat.
- these connecting means between the footrest and the backrest comprise at least one link articulated at one of its ends to the footrest and connected in an articulated manner to the backrest by its other end, said link being articulated in the backrest by means of a slide articulated on the backrest.
- This arrangement has a very advantageous advantage from an economic point of view since, for example, compared with the embodiment of FIG. 18 of the aforementioned French patent, it eliminates a guide system consisting of rotating rollers mounted on the footrest and two grooves complex with several successive curves arranged on large flanges of the seat, and rmeplace them by a system comprising simple articulations cooperating with elements already existing on the seat.
- the backrest is, on the other hand, articulated on the support by a fixed axis and, on the other hand, connected to the seat by an intermediate surface on which it is articulated by a axis integral with said surface, the latter itself being articulated at its other end, both on the seat and on one of the ends of a connecting rod whose other end is articulated on the support along a fixed axis located near the fixed axis on which the backrest is articulated.
- a first advantage of this variant is the flexibility and comfort provided by the intermediate surface between the backrest and the seat in the angle changes between them when moving from one position to another, and a second advantage is that the seat guide grooves are straight because they no longer need to have a particular curvature .
- the means for guiding the seat comprise a connecting rod, one of the ends of which is articulated along a fixed axis on the support, the other end being articulated on an axis integral with said seat.
- the means for guiding the seat comprise two connecting rods articulated on the same free axis in a fixed groove on the seat, the other end of one of the two connecting rods being articulated along a fixed axis on the support and the other end of the other connecting rod being articulated on the backrest along an axis located on the backrest beyond the backrest-seat joint with respect to the backrest-support joint, this arrangement having the same advantage as the previous one as regards the reduction of friction.
- the means for guiding the seat include a deformable parallelogram, one of the four sides of which consists of a part of the seat and one of the joints of which is merged with the backrest joint, the articulation opposite to this articulation carrying at least one roller running on a fixed ramp secured to the support, the fact of replacing axes moving in grooves by rollers rolling on ramp bringing an additional reduction in friction.
- Figure 1 is a perspective view of a chair according to the invention.
- Figure 2 is a partial side view of the chair; .
- Figures 3, 4 and 5 schematically show a chair in three different positions;
- Figure 6 is a partial side view of an alternative embodiment of an armchair
- Figures 7, 8, 9 and 10 are diagrams of four other alternative embodiments of the invention.
- the backrest 100 is articulated on the rear legs 103 along a fixed horizontal axis XX 'and on the seat 102 along an axis YY' also horizontal but mobile.
- the feet 104 carry rollers which can be mounted on ball bearings or be coated with an anti-friction material and which cooperate with grooves 105 provided in the flanges 106 of the seat 102 to allow a certain displacement of the latter, when folder 100 goes from vertical position to horizontal position or vice versa. This displacement is such that the center of gravity of the user's body moves a sufficiently small distance in the vertical plane so that the forces necessary to pass from one position to the other are acceptable even for an elderly person or disabled.
- This comprises two ears 132 which are articulated on the one hand on the seat 102 along the horizontal axis N-N 'and on the other hand on the two links 133 along the horizontal axis P-P'.
- the other end of the links 133 is articulated on the slide 134 along the horizontal axis M-M ', the slide 134 itself being articulated on the backrest 100 along the horizontal axis Q-Q'.
- the slide 134 has, like the rods 4a of Figures 2 and 3 of the main patent, grooves 105b. But in the present case, it is these grooves which cooperate with the rollers of the feet 104 to ensure the displacement of said slide 134 relative to the seat 102.
- the seat 102 When the backrest 100 is in the vertical position (see FIG. 3), the seat 102 is in the low position, the rollers 107 fixed to the feet 104 being in high abutment on the end of the grooves 105. As for the slide. 134, it is in rear position maximum and the links 133 ensure the vertical positioning of the footrest 131 while maintaining the axis PP 'in its extreme position towards the rear of the seat 102.
- the assembly consisting of the seat 102, the slide 134 and the footrest 131 begins to rotate around the fixed axis XX ′. But, simultaneously, the seat 102 by the combined action of the rollers 107 and the grooves 105, begins a rocking movement around the axis Y-Y ', a movement which slightly raises its front.
- the slide 134 by the rocking movement of the seat 102 on which it is articulated and by the combined action of the rollers 107 and the grooves 105b, has its own rocking movement.
- the axis Q- Q ' Around the axis Q- Q ', and since this axis is located, relative to the fixed axis XX' further than the axis Y-Y ', its linear displacement is greater than that of the axis YY' for the same angular displacement. The result of this larger displacement is. that it advances the slide 134 relative to the seat 102. Thanks to this forward movement, the links 133 operate a thrust on the axis P-P ', which causes the rotation of the footrest 131 which therefore moves towards the horizontal position.
- the different positions of the backrest 100 and of the seat 102 can be blocked by clamping levers 109. But, moreover, these also block the footrest 131 by blocking the slide. 134.
- the seat shown diagrammatically comprises a backrest 151, a seat 152 and a support 153 with four legs 154 and 155.
- An intermediate bearing surface 156 is provided between the backrest 151 and the seat 152. It is articulated at 157 on the base of the backrest 151 and at 158 on the rear of the seat 152.
- the backrest 151 is articulated on the support 153 along a fixed axis 159 and the seat 152 carries two rollers 160, one on each side, which circulate in grooves 161 forming part of the support 153.
- Two links 162, one on each side, are articulated, on the one hand on the support 153 along a fixed axis 163 and, on the other hand, on the articulation 158 connecting the intermediate bearing surface 156 and the seat 152 .
- the backrest 151 by tilting backwards during its passage from the vertical position to the horizontal position, moves the seat 152 opposite which, thanks to the inclination of the grooves 161, comes to rest first in its front part, then in its rear part, at the back when it reaches its horizontal position.
- the seat guide grooves have become rectilinear.
- the seat includes a backrest 171, a seat 172 and a four-legged support 173 174, 175.
- the backrest 171 is articulated on the support 173 along a fixed axis 176.
- the seat 172 and the backrest 171 are articulated one on the other at 177.
- Two connecting rods 178 are articulated at one of their ends on the feet 174 of the support 173 along a fixed axis 180, the other end of the connecting rods being articulated at 179 on the seat 172.
- this system has the advantage of having very reduced friction compared to that of axes or rollers guided in grooves.
- the seat includes a backrest 191, a seat 192 and a four-legged support 193 194, 195.
- the backrest 191 is articulated on the support 193 along a fixed axis 196.
- the seat 192 and the backrest 91 are articulated one on the other in 197.
- a stick 200 continues the file beyond the axis 197 and constitutes one of the sides of a deformable parallelogram whose three other sides are formed by the part 203 of the seat 192 and two links 201 and 202.
- the link 201 is articulated at one of its ends on the seat 192 along an axis 204, while the link 202 is articulated on the stock 200 along an axis 206, the two links being moreover articulated one on the other along an axis 205 carrying at least one roller 199 which rolls on a ramp 198 fixed on the support 193.
- the stick 200 forming an integral part of the backrest 191 rotates with it around the fixed axis 196, pushing forward the rod 202 and therefore the rotating roller 199 which rolls on the ramp 198 .
- the cam movement caused by the roller 199 while rolling on the ramp 198 causes the front of the seat 192, which is thus in the normal position when the backrest 191 reaches the horizontal position at the same time as the rear of the seat.
- FIG. 6 shows precisely an alternative embodiment of the seat illustrated in FIGS. 1 to 5.
- each link 133 carries a stud 135 which moves in a groove 136 arranged that the slide 134. Thanks to its weight, the footrest puts the pins 135 into abutment at the ends of the grooves 136, which allows the slide to transmit its action, the advantage of the grooves being to allow folding of the chair in a smaller footprint.
- Figure 10 also shows another embodiment which constitutes a variant of Figure 8.
- a seat with a backrest 211 there is a seat with a backrest 211, a seat
- a connecting rod system comprising a first connecting rod 218 articulated at one of its ends on the feet
- the articulation 220 which moves in a light 221 secured to the seat 212, also carries one end of a second connecting rod 219 the other end of which is articulated at 223 on an extension of the backrest 211.
- the articulation 220 carrying one end of the two connecting rods 218 and 219 is located in the rear part of the lumen 221.
- the articulation 220 will therefore move forward inside the lumen 221 until it comes to the end of the travel, in abutment.
- the connecting rod 218 went from an inclined position at the start to a substantially vertical position at the end of the movement, thus playing the same role as the connecting rod 178 in FIG. 8.
- the invention can also be applied to any other type of seat, provided that it comprises at least one backrest, a seat and possibly a footrest.
- the movement of the various articulated elements could be motorized by means of a low power motor controlled by the user and the invention can be applied to a bed base.
Landscapes
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
- Seats For Vehicles (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Mechanical Operated Clutches (AREA)
- Massaging Devices (AREA)
- Luminescent Compositions (AREA)
- Finger-Pressure Massage (AREA)
- Table Devices Or Equipment (AREA)
- Chairs Characterized By Structure (AREA)
- Sewing Machines And Sewing (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Le siège articulé comprend au moins un support (103, 104), un dossier (100) et une assise (102) articulés ensemble. Il comprend en outre un repose-pied (131) articulé sur l'assise (102) suivant une articulation (N-N') parallèle aux articulations assise-dossier (Y-Y') et dossier-support (X-X') et des moyens (133, 134) pour relier, de façon articulée, le repose-pied (131) à une partie du dossier (100) située au-delà de l'articulation assise-dossier (Y-Y') par rapport à l'articulation dossier-support (X-X'), de manière que toute modification de la position angulaire du dossier (100) par rapport à son support (103, 104) entraîne une modification angulaire du repose-pied (131) par rapport à l'assise (102). Utilisation notamment dans les fauteuils de relaxation à positions multiples.The articulated seat comprises at least one support (103, 104), a backrest (100) and a seat (102) articulated together. It further comprises a footrest (131) articulated on the seat (102) along an articulation (N-N ') parallel to the seat-back (Y-Y') and back-support (X-X ') articulations. and means (133, 134) for connecting, in an articulated manner, the footrest (131) to a part of the backrest (100) situated beyond the seat-back articulation (Y-Y ') relative to the backrest-support joint (X-X '), so that any modification of the angular position of the backrest (100) relative to its support (103, 104) causes an angular modification of the footrest (131) with respect to at the seat (102). Use especially in multi-position relaxation chairs.
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT84902922T ATE32418T1 (en) | 1983-09-14 | 1984-08-01 | ARTICULATED SEAT. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8314600 | 1983-09-14 | ||
FR8314600A FR2551637B2 (en) | 1983-09-14 | 1983-09-14 | ARTICULATED SEAT |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0156814A1 true EP0156814A1 (en) | 1985-10-09 |
EP0156814B1 EP0156814B1 (en) | 1988-02-10 |
Family
ID=9292201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84902922A Expired EP0156814B1 (en) | 1983-09-14 | 1984-08-01 | Articulated seat |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP0156814B1 (en) |
JP (1) | JPS60502188A (en) |
AT (1) | ATE32418T1 (en) |
AU (1) | AU3216284A (en) |
BR (1) | BR8407066A (en) |
DE (2) | DE156814T1 (en) |
DK (1) | DK207185A (en) |
FI (1) | FI851845A0 (en) |
FR (1) | FR2551637B2 (en) |
IT (1) | IT1178425B (en) |
NO (1) | NO851804L (en) |
OA (1) | OA08094A (en) |
WO (1) | WO1985001196A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5868467A (en) * | 1996-08-28 | 1999-02-09 | Thomas Jungjohann | Seating furniture component or the like with a coupled backrest and seat adjustment |
US6039154A (en) * | 1996-08-29 | 2000-03-21 | Thomas Jungjohann | Braking means for a movable part of a furniture component, especially an upholstered furniture component |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2161117B1 (en) * | 1998-11-10 | 2002-06-16 | Figueras Int Seating Sa | ARMCHAIR WITH BACKREST AND FOLDING FOOTBALL. |
SG94322A1 (en) * | 1999-04-07 | 2003-02-18 | Fuji Iryoki Kk | A chair |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR711928A (en) * | 1931-02-24 | 1931-09-21 | Meillet Et Lemarchand Soc | Mechanism for variable-tilt chairs and chairs incorporating this mechanism |
FR734243A (en) * | 1932-03-26 | 1932-10-18 | Meillet Et Lemarchand | Variable tilt armchair |
FR1596508A (en) * | 1968-07-18 | 1970-06-22 |
-
1983
- 1983-09-14 FR FR8314600A patent/FR2551637B2/en not_active Expired
-
1984
- 1984-08-01 EP EP84902922A patent/EP0156814B1/en not_active Expired
- 1984-08-01 DE DE198484902922T patent/DE156814T1/en active Pending
- 1984-08-01 AT AT84902922T patent/ATE32418T1/en not_active IP Right Cessation
- 1984-08-01 BR BR8407066A patent/BR8407066A/en unknown
- 1984-08-01 DE DE8484902922T patent/DE3469264D1/en not_active Expired
- 1984-08-01 JP JP59503044A patent/JPS60502188A/en active Pending
- 1984-08-01 WO PCT/FR1984/000182 patent/WO1985001196A1/en active IP Right Grant
- 1984-08-01 AU AU32162/84A patent/AU3216284A/en not_active Abandoned
- 1984-09-12 IT IT48829/84A patent/IT1178425B/en active
-
1985
- 1985-05-07 NO NO851804A patent/NO851804L/en unknown
- 1985-05-09 FI FI851845A patent/FI851845A0/en not_active Application Discontinuation
- 1985-05-09 DK DK207185A patent/DK207185A/en unknown
- 1985-05-10 OA OA58589A patent/OA08094A/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO8501196A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5868467A (en) * | 1996-08-28 | 1999-02-09 | Thomas Jungjohann | Seating furniture component or the like with a coupled backrest and seat adjustment |
US6039154A (en) * | 1996-08-29 | 2000-03-21 | Thomas Jungjohann | Braking means for a movable part of a furniture component, especially an upholstered furniture component |
Also Published As
Publication number | Publication date |
---|---|
WO1985001196A1 (en) | 1985-03-28 |
DE156814T1 (en) | 1986-01-16 |
IT8448829A1 (en) | 1986-03-12 |
FI851845L (en) | 1985-05-09 |
OA08094A (en) | 1987-03-31 |
NO851804L (en) | 1985-05-07 |
IT1178425B (en) | 1987-09-09 |
IT8448829A0 (en) | 1984-09-12 |
DK207185D0 (en) | 1985-05-09 |
DK207185A (en) | 1985-05-09 |
EP0156814B1 (en) | 1988-02-10 |
JPS60502188A (en) | 1985-12-19 |
FI851845A0 (en) | 1985-05-09 |
BR8407066A (en) | 1985-08-13 |
DE3469264D1 (en) | 1988-03-17 |
ATE32418T1 (en) | 1988-02-15 |
FR2551637A2 (en) | 1985-03-15 |
AU3216284A (en) | 1985-04-11 |
FR2551637B2 (en) | 1986-01-24 |
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