[go: up one dir, main page]

US20070194612A1 - Seat with a separately adjustable back rest and seat portion and an adjustable seat depth - Google Patents

Seat with a separately adjustable back rest and seat portion and an adjustable seat depth Download PDF

Info

Publication number
US20070194612A1
US20070194612A1 US10/591,942 US59194205A US2007194612A1 US 20070194612 A1 US20070194612 A1 US 20070194612A1 US 59194205 A US59194205 A US 59194205A US 2007194612 A1 US2007194612 A1 US 2007194612A1
Authority
US
United States
Prior art keywords
seat
seat portion
back rest
extendable
retractable member
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.)
Abandoned
Application number
US10/591,942
Other languages
English (en)
Inventor
Roger Prieur
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of US20070194612A1 publication Critical patent/US20070194612A1/en
Abandoned legal-status Critical Current

Links

Images

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
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A47C1/0244—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by fluid means

Definitions

  • the present invention relates to a seat of the type comprising a seat portion and a back rest, hinged to one another about an axis of rotation.
  • the present invention relates to a seat of the abovementioned type in which said hinging is achieved in the form of a pair of means located on either side of the seat about a plane of symmetry passing through the back rest and the seat portion, each of said means consisting of, on the one hand, a first element, forming a back rest rotation support, through which said axis of rotation passes and one end of which is integral with said back rest, and, on the other hand, a second element.
  • a seat meeting this definition is known from US patent application US2003/0011226 A1. It consists of a car seat comprising an inverted U-shaped part as a back rest structure 14 and a frame as a seat portion structure 10 , said frame being mounted so as to slide on a support 86 .
  • Each free end of the U-shaped part constitutes what was referred to above as a first element, and the second element of the hinge system is a part integral with the frame 10 , in such a way that the second element is the seat portion frame itself.
  • the ends of the U-shaped part are inserted in a slot made in the seat portion frame 10 in such a way that, when the seat portion structure slides, the back rest structure can only follow.
  • the depth of the seat portion be adapted to his size. For example, it is just as uncomfortable for a tall person whose thighs jut out to some extent over the front of the seat portion as for a short person whose legs do not touch the floor when he is sitting back in the seat.
  • the invention proposes a novel solution to this problem by combining the hinging of the back rest/seat with the adjustment of the depth of the seat portion.
  • the invention relates to a seat of the abovementioned type, characterized in that said second element is a part which is
  • a first extendable/retractable member being fastened, on the one hand, to the end of said first element opposite the end which is integral with the back rest and, on the other hand, to the end of said second element which is opposite the axis of rotation.
  • the back rest rotation support can be moved in translation with respect to the seat portion.
  • the first extendable/retractable member is a gas spring, i.e. an element with a hydro-pneumatic structure having a cylinder and a piston, making it possible to pivot the back rest and counterbalance the movement at a controlled speed, simply under the effect of the user's upper torso pressing on the back rest.
  • a gas spring i.e. an element with a hydro-pneumatic structure having a cylinder and a piston
  • the length of travel of the gas spring piston and, hence, its resistance can be set as desired.
  • the seat portion sliding support advantageously comprises a stop limiting the pivoting of the back rest with respect to the seat portion.
  • the seat portion sliding support slides with respect to a part integral with the seat portion and is immobilizable with respect to this same part.
  • the back rest rotation support and the seat portion sliding support are integral via the axis of rotation, and therefore the back rest rotation support also slides with respect to the part integral with the seat portion and, as a result, the distance between the back rest and the free edge of the seat portion can be adjusted (in other words, the depth of the seat portion can be adjusted).
  • the backrest may be adjusted with respect to the general plane of the seat portion, which itself remains fixed.
  • Seats are also known in which the rearward adjustment of the back rest causes the seat portion to tilt upward, and vice versa.
  • the seat according to the invention also comprises a seat portion support that rests directly or indirectly on the floor and this seat portion support has a point of fastening for one of the ends of a second extendable/retractable member whose other end is fastened to the seat portion.
  • This second extendable/retractable member may be a pneumatic jack or an electric jack.
  • the seat is a relaxation armchair and, to this end, it also comprises a leg rest.
  • leg rest can be operated independently of the adjustment of the back rest and of the adjustment of the seat portion, said leg rest has a point of fastening for one of the ends of a third extendable/retractable member whose other end is fastened to the seat portion.
  • This third extendable/retractable member may be a pneumatic jack or an electric jack.
  • first, second and third extendable/retractable members function independently of one another.
  • FIGS. 1 a - 1 c schematically show the respective planes of the three main components (seat portion, back rest and leg rest) of a relaxation armchair according to the invention and FIGS. 1 d - 1 f schematically show three possible depths of the seat portion according to the invention;
  • FIG. 2 is a schematic view of the installation of the three extendable/retractable control members
  • FIG. 3 is a detail view of the region of hinging between the back rest and the seat portion and
  • FIG. 4 is a detail view of the hinge system of FIG. 3 , seen from the rear of the seat (arrow F in FIG. 3 ).
  • FIGS. 1 a - 1 c show the positions occupied by the planes of the seat 1 , back rest 2 and leg rest 3 , in the “sitting” position ( FIG. 1 a ), relaxation position ( FIG. 1 b ) and “zero gravity” position (heart lower than leg rest) ( FIG. 1 c ), respectively.
  • the seat portion 1 makes, with the back rest 2 , an angle ⁇ which is variable ( ⁇ 1 ⁇ 2 ⁇ 3 ) and, with the leg rest 3 , an angle ⁇ which is also variable ( ⁇ 1 ⁇ 2 ⁇ 3 ), and ⁇ varies independently of ⁇ .
  • the three planes (plane of the seat portion 1 , plane of the back rest 2 and plane of the leg rest 3 ) can be moved independently of one another.
  • FIG. 2 three operating members are provided.
  • the seat portion 1 is adjusted with respect to the floor using a pneumatic jack 4 which bears, on the one hand, on said seat portion 1 and, on the other hand, on a seat portion support 5 resting on the floor;
  • the back rest 2 is adjusted with respect to the seat portion 1 using a gas spring 6 which bears, on the one hand, on said seat portion 1 and, on the other hand, on a part 10 attached to the back rest 2 ;
  • the leg rest 3 is tilted with respect to the seat portion 1 using a pneumatic jack 7 which bears, on the one hand, on said seat portion 1 and, on the other hand, on said leg rest.
  • the gas spring 6 is actuated, in one direction, simply by the user's upper torso pressing against the back rest 2 and, in the other direction, simply by the user raising his back off the back rest and, if necessary, bearing on the arm rests (not shown). Note that the back rest 2 returns automatically since, when the user reclines by pressing with his upper torso, the gas in the gas spring is compressed and, once the pressure is released, the gas expands.
  • the pneumatic jacks 4 and 7 are actuated, entirely conventionally, by a push button.
  • the pneumatic jacks 4 and 7 could be replaced by electric jacks, keeping the gas spring 6 for operating the back rest 2 , or alternatively the gas spring 6 could itself also be replaced by an electric jack.
  • the seat portion 1 pivots about the point P.
  • the seat portion support 5 has heightwise-adjustable legs.
  • the leg rest 3 incorporated in the armchair according to the invention may have the structure described in EP 1 099 396, i.e. an extendable and retractable structure, with little wheels in permanent contact with the floor; thanks to these little wheels, extension only has to be initiated, most of the extension movement taking place simply under the effect of gravity.
  • FIG. 3 this shows in detail the region of hinging between the seat portion 1 and the back rest 2 , on one of the side faces of the seat, a symmetrical assembly being located on the other side face.
  • the reference 8 denotes a part integral with the back rest and the reference 9 denotes a part integral with the seat portion.
  • the hinge system comprises a first element 10 , the “back rest rotation support”, and a second element 11 , the “seat portion sliding support”, the elements 10 and 11 being joined by an axis of rotation 12 .
  • the element 10 has roughly the shape of a bicorn hat, lying vertically, with the axis of rotation 12 passing through it approximately at its center. At one of its ends, the element 10 is assembled fixedly to the part 8 integral with the back rest and, at its other end, the element 10 has a point of fastening 13 for the rod 14 of the piston of the gas spring 6 whose cylinder 15 is fastened at 16 to the second element 11 .
  • An adjustment screw 17 is provided for moving the point of fastening 13 and hence increasing or reducing the length of travel of the piston of the gas spring 6 .
  • a stop 18 limits the pivoting of the element 10 and hence of the back rest 2 .
  • the element 11 comprises adjustment holes such as 19 , which face slots such as 20 made in the part 9 , in such a way that the relative position of the element 11 and of the part 9 can be modified in translation by sliding and fixed in the desired position by screwing in bolts, such as 21 , which pass through both a hole 19 and a slot 20 .
  • This assembly thus makes it possible to regulate both the control of the reclining of the back rest as a function of the weight of the user (by adjusting the level of the point of fastening 13 ) and that of the depth of the seat portion (by adjusting the relative position of the element 11 and of the part 9 ).
  • FIGS. 1 d - 1 f The result of adjusting the depth of the seat portion is shown schematically by FIGS. 1 d - 1 f .
  • FIG. 1 d is identical to FIG. 1 a and shows a maximum seat portion depth P 1 , the base of the back rest 2 adjoining the rear edge of the seat portion 1 .
  • FIG. 1 e shows a shorter seat portion depth P 2 ⁇ P 1 due to relative movement between the back rest 2 and the seat portion 1 , the angles ⁇ 1 and ⁇ 1 remaining the same, and figure if shows an even shorter seat portion depth P 3 ⁇ P 2 ⁇ P 1 due to relative movement between the back rest 2 and the seat portion 1 , the angles ⁇ 1 and ⁇ 1 always remaining the same.
  • the three positions illustrated are merely three examples, any intermediate position being possible, and that it is possible to modify the seat portion depth whatever the angles ⁇ and ⁇ .

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
US10/591,942 2004-03-09 2005-03-08 Seat with a separately adjustable back rest and seat portion and an adjustable seat depth Abandoned US20070194612A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0402432 2004-03-09
FR0402432A FR2867364B1 (fr) 2004-03-09 2004-03-09 Siege a dossier et assise independamment inclinables et a profondeur d'assise reglable
PCT/FR2005/000547 WO2005087051A2 (fr) 2004-03-09 2005-03-08 Siege a dossier et assise independamment inclinables et a profondeur d'assise reglable

Publications (1)

Publication Number Publication Date
US20070194612A1 true US20070194612A1 (en) 2007-08-23

Family

ID=34896395

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/591,942 Abandoned US20070194612A1 (en) 2004-03-09 2005-03-08 Seat with a separately adjustable back rest and seat portion and an adjustable seat depth

Country Status (5)

Country Link
US (1) US20070194612A1 (fr)
EP (1) EP1722657B1 (fr)
AT (1) ATE508662T1 (fr)
FR (1) FR2867364B1 (fr)
WO (1) WO2005087051A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105667353A (zh) * 2014-12-08 2016-06-15 沃尔沃汽车公司 可后倾座椅
US20200352337A1 (en) * 2018-01-09 2020-11-12 Superseating Bvba Seating assembly for improved seating, ergonomic chairs or wheelchairs

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2955755B1 (fr) * 2010-02-04 2012-02-24 Variation Systeme d'inclinaison avec reglage morphologique pour fauteuil de relaxation

Citations (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3338632A (en) * 1966-02-09 1967-08-29 Carl T Kleinsorge Reclining chair
US3602537A (en) * 1968-02-01 1971-08-31 Gerdi Kerstholt Seat system with a backrest
US3753592A (en) * 1971-02-11 1973-08-21 C Jensen Lounge
US3934927A (en) * 1974-10-29 1976-01-27 Arizona Lounger Company Powered tilting lounger
US4004836A (en) * 1974-10-15 1977-01-25 Landstingens Inkopscentral Lic, Ekonomisk Forening Chair with tiltable spring biased back-rest
US4370001A (en) * 1980-07-01 1983-01-25 Oernberg Stellan Basic frame for an adjustable damper-actuated chair
US4456297A (en) * 1980-05-16 1984-06-26 Sybron Corporation Dental chair
US4966413A (en) * 1989-08-17 1990-10-30 Palarski Timothy D Articulated relaxation chair
US5165753A (en) * 1991-01-02 1992-11-24 Henderson Eldred D Elevator chair apparatus
US5246271A (en) * 1990-04-04 1993-09-21 Bertrand Faure Automobile Vehicle seats with built-in safety belt
US5342112A (en) * 1992-03-24 1994-08-30 Alessandro Padovan Assembly for a chair with adjustable seat back and leg-rest
US5498055A (en) * 1993-11-16 1996-03-12 Goldman; Paul R. Recliner: apparatus and method
US5709133A (en) * 1995-11-09 1998-01-20 Bertrand Faure Components Ltd. Linear locking device
US5868461A (en) * 1997-05-06 1999-02-09 Broda Enterprises Inc. Reclining chair
US5895090A (en) * 1996-09-24 1999-04-20 Lear Corporation Vehicle with integrated restraint system
US6007150A (en) * 1998-03-08 1999-12-28 Milsco Manufacturing Company Motorcycle seat with adjustable backrest
US6065806A (en) * 1997-04-30 2000-05-23 Matsushita Electric Works, Ltd. Massaging device
US6441576B1 (en) * 1999-11-29 2002-08-27 Labinal Device for actuating a seat element
US20030011226A1 (en) * 2001-03-02 2003-01-16 Schooler Paul T. Ten way power adjustable seat
US6583596B2 (en) * 2001-02-27 2003-06-24 Labinal Seat with moving parts
US6715834B1 (en) * 2003-07-15 2004-04-06 Simon Liao Angle adjusting device for a chair
US6739664B2 (en) * 2000-10-16 2004-05-25 Kokuyo Co., Ltd. Chair
US20050023875A1 (en) * 2003-07-30 2005-02-03 Sirjoo Malbee B. Portable folding chair
US7134713B1 (en) * 2005-05-10 2006-11-14 Taiwan Shin Yen Enterprise Co., Ltd. Chair with a footrest turnable relative to a chair seat frame
US20070001499A1 (en) * 2005-06-30 2007-01-04 Nathaniel Smith Manual zero gravity reclining chair with adjustable back angle
US20070278837A1 (en) * 2006-10-13 2007-12-06 L & P Property Management Company Reclining back mechanism for a seating unit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1927568A1 (de) * 1969-05-30 1970-12-10 Adam Schneider Gmbh Hydraulische Antriebsvorrichtung fuer zahnaerztliche Behandlungsstuehle
DE2335586A1 (de) * 1973-01-29 1975-01-30 Fritz Kerstholt Sitz- und/oder liegemoebel mit bewegbarem rueckenteil
DE2406374A1 (de) * 1973-02-14 1975-08-14 Fritz Kerstholt Liege mit mehrteiliger liegeflaeche
EP0068639B1 (fr) * 1981-06-24 1986-08-20 Imperial Chemical Industries Plc Mécanisme de réglage d'inclinaison
CA2077074A1 (fr) * 1990-02-28 1991-08-29 Svein Asbjornsen Chaise reglable
FR2800590B1 (fr) * 1999-11-05 2001-12-28 Roger Prieur Repose-jambes escamotable pour siege

Patent Citations (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3338632A (en) * 1966-02-09 1967-08-29 Carl T Kleinsorge Reclining chair
US3602537A (en) * 1968-02-01 1971-08-31 Gerdi Kerstholt Seat system with a backrest
US3753592A (en) * 1971-02-11 1973-08-21 C Jensen Lounge
US4004836A (en) * 1974-10-15 1977-01-25 Landstingens Inkopscentral Lic, Ekonomisk Forening Chair with tiltable spring biased back-rest
US3934927A (en) * 1974-10-29 1976-01-27 Arizona Lounger Company Powered tilting lounger
US4456297A (en) * 1980-05-16 1984-06-26 Sybron Corporation Dental chair
US4370001A (en) * 1980-07-01 1983-01-25 Oernberg Stellan Basic frame for an adjustable damper-actuated chair
US4966413A (en) * 1989-08-17 1990-10-30 Palarski Timothy D Articulated relaxation chair
US5246271A (en) * 1990-04-04 1993-09-21 Bertrand Faure Automobile Vehicle seats with built-in safety belt
US5165753A (en) * 1991-01-02 1992-11-24 Henderson Eldred D Elevator chair apparatus
US5342112A (en) * 1992-03-24 1994-08-30 Alessandro Padovan Assembly for a chair with adjustable seat back and leg-rest
US5498055A (en) * 1993-11-16 1996-03-12 Goldman; Paul R. Recliner: apparatus and method
US5709133A (en) * 1995-11-09 1998-01-20 Bertrand Faure Components Ltd. Linear locking device
US5895090A (en) * 1996-09-24 1999-04-20 Lear Corporation Vehicle with integrated restraint system
US6065806A (en) * 1997-04-30 2000-05-23 Matsushita Electric Works, Ltd. Massaging device
US5868461A (en) * 1997-05-06 1999-02-09 Broda Enterprises Inc. Reclining chair
US6007150A (en) * 1998-03-08 1999-12-28 Milsco Manufacturing Company Motorcycle seat with adjustable backrest
US6441576B1 (en) * 1999-11-29 2002-08-27 Labinal Device for actuating a seat element
US6739664B2 (en) * 2000-10-16 2004-05-25 Kokuyo Co., Ltd. Chair
US6583596B2 (en) * 2001-02-27 2003-06-24 Labinal Seat with moving parts
US20030011226A1 (en) * 2001-03-02 2003-01-16 Schooler Paul T. Ten way power adjustable seat
US6715834B1 (en) * 2003-07-15 2004-04-06 Simon Liao Angle adjusting device for a chair
US20050023875A1 (en) * 2003-07-30 2005-02-03 Sirjoo Malbee B. Portable folding chair
US7134713B1 (en) * 2005-05-10 2006-11-14 Taiwan Shin Yen Enterprise Co., Ltd. Chair with a footrest turnable relative to a chair seat frame
US20070001499A1 (en) * 2005-06-30 2007-01-04 Nathaniel Smith Manual zero gravity reclining chair with adjustable back angle
US20070278837A1 (en) * 2006-10-13 2007-12-06 L & P Property Management Company Reclining back mechanism for a seating unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105667353A (zh) * 2014-12-08 2016-06-15 沃尔沃汽车公司 可后倾座椅
US20200352337A1 (en) * 2018-01-09 2020-11-12 Superseating Bvba Seating assembly for improved seating, ergonomic chairs or wheelchairs
US12251020B2 (en) * 2018-01-09 2025-03-18 Superseating Bvba Seating assembly for improved seating, ergonomic chairs or wheelchairs

Also Published As

Publication number Publication date
FR2867364B1 (fr) 2007-10-05
FR2867364A1 (fr) 2005-09-16
EP1722657A2 (fr) 2006-11-22
WO2005087051A3 (fr) 2005-11-24
ATE508662T1 (de) 2011-05-15
WO2005087051A2 (fr) 2005-09-22
EP1722657B1 (fr) 2011-05-11

Similar Documents

Publication Publication Date Title
US8662586B2 (en) Dynamically balanced seat assembly having independently and arcuately movable backrest and method
US6857704B2 (en) Neck support for a chair
US5054857A (en) Convertible chair
US10123625B2 (en) Reversible headrest tilt, lumbar mechanism
US10383448B1 (en) Forward tilt assembly for chair seat
JP4543362B2 (ja) シート家具、特に、事務用椅子におけるシートと背もたれの配置構造
US20150201758A1 (en) Dynamically Balanced Seat Assembly Having Independently And Arcuately Movable Backrest And Method
US20080012414A1 (en) Armchair
US20080272638A1 (en) Synchronization Mechanism
EP0277145A1 (fr) Dispositf de siege reglable.
US20150282623A1 (en) Multi-posture chair
US20060244294A1 (en) Chair, especially an office or work chair
US5263767A (en) Adjustable chair
CN111317286A (zh) 一种增加舒适性的腰托座椅
US11160377B2 (en) Synchronous chair mechanism and chair having same
AU2863699A (en) A chair
KR20190079955A (ko) 의자의 좌판부 슬라이드 구조
US20070194612A1 (en) Seat with a separately adjustable back rest and seat portion and an adjustable seat depth
US11006752B2 (en) Multifunctional balance chair
EP3326492A1 (fr) D'inclinaison d'appuie-tête réversible, mécanisme lombaire
KR101009491B1 (ko) 틸팅거리 조절 가능한 등받이를 구비한 의자
KR102303651B1 (ko) 의자용 좌판의 국부 변동 구조
JP4448098B2 (ja) 着座家具及び／又は横臥家具
AU2006275207B2 (en) A chair or a bed having a seat, a backrest and an armrest as well as use thereof
PL242877B1 (pl) Krzesło dwufunkcyjne do siedzenia i klękosiadu

Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION