EP2723215B1 - Siège - Google Patents

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Publication number
EP2723215B1
EP2723215B1 EP12730022.6A EP12730022A EP2723215B1 EP 2723215 B1 EP2723215 B1 EP 2723215B1 EP 12730022 A EP12730022 A EP 12730022A EP 2723215 B1 EP2723215 B1 EP 2723215B1
Authority
EP
European Patent Office
Prior art keywords
seat
user
pads
pan
pad
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.)
Not-in-force
Application number
EP12730022.6A
Other languages
German (de)
English (en)
Other versions
EP2723215A1 (fr
Inventor
Simon Andrew FREEDMAN
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.)
Freedman Seats Ltd
Original Assignee
Freedman Seats Ltd
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 Freedman Seats Ltd filed Critical Freedman Seats Ltd
Priority to PL12730022T priority Critical patent/PL2723215T3/pl
Publication of EP2723215A1 publication Critical patent/EP2723215A1/fr
Application granted granted Critical
Publication of EP2723215B1 publication Critical patent/EP2723215B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47C7/02—Seat parts
    • 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
    • A47C7/02—Seat parts
    • A47C7/024—Seat parts with double seats
    • 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
    • A47C7/02—Seat parts
    • A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
    • 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
    • A47C7/02—Seat parts
    • A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
    • A47C7/144—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions with array of movable supports
    • 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
    • A47C7/405—Support for the head or the back for the back with double backrests
    • 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
    • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • 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
    • A47C9/005—Stools for specified purposes with exercising means or having special therapeutic or ergonomic effects with forwardly inclined seat, e.g. with a knee-support
    • 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
    • A47C9/02—Office stools not provided for in main groups A47C1/00, A47C3/00 or A47C7/00; Workshop stools
    • A47C9/025—Stools for standing or leaning against, e.g. in a semi-standing or half-seated position

Definitions

  • the present invention relates to a seat with a contoured pan; particularly a seat for use in an office chair, task chair, aircraft seat, bicycle, vehicle, wheelchair, pushchair, child's seat/car seat or bench.
  • the invention is a seat that actively directs the sitter into a correct sitting position as hypothesised by the inventor, i.e. a position that emulates the position that the sitter's spine and pelvis would achieve if they were standing.
  • the present invention seeks to provide a seat that actively directs the sitter into a sitting position wherein the sitter's spine and pelvis have a similar structural and postural position as when the sitter is standing.
  • the seat In order to achieve this the seat must allow a considerable downward slope of the thighs (from hip to knee), without the sitter sliding forward, and each side of the pelvis must be helped to achieve the same relative height to the other as they have when standing.
  • a seat according to claim 1 with a contoured pan adapted to support each ischial tuberosity of a user and enabling the thighs of a user to be supported at a position between 15 and 45 degrees to the horizontal plane.
  • the contoured seat pan provides a cup-like support (i.e. concave around at least two axes) such that, even when at an angle, a user will sit comfortably and not slide forward.
  • the function of preventing a user from sliding forward may be achieved through other means that are equivalent to a contoured seat pan, such as ridges, a non-slip rubber surface or even adhesive/straps. These functional equivalents may be incorporated instead of a strictly "contoured" seat pan.
  • the seat pan supports a thigh angle of 22 to 32 degrees (but optimally the pan is selected to support the thighs at 27 degrees) to the horizontal plane, which causes the lumbar spine to replicate the anterior facing curve (lordosis) it achieves when a person is standing.
  • the present invention directs (and maintains) the body to replicate the position of the pelvis and spine as occurs when standing. During use the sitting thigh angle does not alter significantly.
  • the seat pan is comprised of two separate, at least partially concave, shaped seat pads for each side of a user, wherein each pad supports the tissues and shapes around each ischial tuberosity.
  • This structure enhances the body's natural cushioning features and so reduces the need for wasteful/excessive cushioning.
  • the seat pan could be formed in a single integrated piece that performs the function of the two seat pads otherwise described herein.
  • each seat pad is attached to a base/pedestal structure by a lug with an internal silicon bush at the front and is also connected by a pivoting leaf-spring and another silicon bush at the back. This allows each seat pad to vary its height, towards the back, in a linked way, relative to the other pad. This addresses the fact that it is essential for comfortable sitting that one side of the pelvis might be higher than the other as in most standing people.
  • the pads are concave around two axes (not one as in some prior art, e.g. GB611899 ) and are preferably able to move around at least four axes and two fulcra (again, distinguished from GB611899 which has only one axis).
  • the leaf spring also allows the springing movement of a back post, a movement that helps in the treatment of hypertonicity in the back muscles provided by a series of "back balls" located on a seat back portion.
  • the pads also have a silicon mounting bush within the lug at the front and between the mountings at the back, which allow for a controlled amount of roll in the seat pad.
  • the back portion is self adjusting in response to a user sitting on the contoured pan.
  • the self adjusting back component of the invention can be used to treat hypertonicity (elevated tone) in the postural back muscles.
  • the seat is preferably manually adjustable in height only; with the result that many superfluous and wasteful manual adjustment mechanisms (as found in the prior art) can be discarded.
  • the seat can be used in an adapted form for use in bicycle and motorcycle seats.
  • the standard saddle is also irritating to haemorrhoids. Many people do not ride bicycles as they find them uncomfortable and this is because much of the body weight is transferred through the perineum rather than the ischialtuberosities as outlined by the present invention.
  • a seat according to the invention may be modified by cutting off approximately half of the pad to reduce its size. In other words, some uses of the seat of the invention may necessitate utilising only part of each pad.
  • the invention is also anticipated for use in wheelchairs and integrated into other seat structures, such as a bench. Indeed the invention could also be in the form of a portable or retrofit insert for any seat/chair.
  • the seat of the invention is intended to automatically adapt to a user and does not require numerous user adjustments/customisation to find a comfortable position.
  • Prior art seating devices are known to provide manual adjustments that may, coincidentally, locate a seating position which would emulate a standing position and, in such a case, the prior art seat may achieve the same benefits as the present invention for that user.
  • such a seat cannot adapt to future changes in the user or other users the way the present invention can.
  • Figure 4 best illustrates a general view of a seat according to the present invention incorporated into an office chair which has a base with feet and/or wheels 11 converging into a central pedestal 12.
  • a base with wheels is relatively conventional and it should be noted that any recognisable configuration of chair with ground contacting parts could implement the invention.
  • a height adjustment means 13 is incorporated into the pedestal 12, which may be in the form of a screw thread (as shown) or a pneumatic/spring cylinder.
  • Figures 1 and 2 illustrate relatively raised and lowered positions of the seat by virtue of the height adjustment means 13. Height of the seat from the ground is adjusted for comfort dependent on the length of a user's legs, e.g. so feet will be flat on the floor.
  • the seat itself includes a seat pan preferably formed from two pads 14 which have an at least partially concave construction and are a mirror-image of each other. These pads 14 are preferably independently mounted onto a frame structure 15 at the upper end of the pedestal 12 that supports each pad and a back portion 16, pivotally attached at an axis 17 (best seen in Figure 6 ).
  • Seat back 16 also features a series of padded supports 18 or "back balls" that, in use, contact a user's back.
  • Figure 6 illustrates a side view of a seat according to the invention in its initial unloaded or "resting" state, i.e. without the weight of a person applied.
  • the seat pads 14 rest at a relatively high angle and it will be apparent that seat back 16 is reclined at an angle over vertical in this first resting position, before a person sits on the seat.
  • Figures 5 and 6 generally show a relative linkage arrangement of the seat pads where the frame structure 15 is connected to the pedestal and the spine-shaped seat back 16 is connected at a second pivot 19 (located between the first pivot 17 and the upwardly curving back portion of seat back 16) by a link arm 20 to a front lug 21 extending from the underside of a seat pad.
  • the lugs include an internal silicon bush that provides some flexibility (i.e. "give") to the pad movement.
  • the distal end of the curved seat back terminates in the first pivot connection point 17 where a leaf spring 22 is mounted and spans between the two seat pads 14 as best seen in Figure 7 .
  • a further set of resilient bushes 23 (made of silicon or equivalent) are mounted with and extend from the rear underside of the seat pads 14 to connect with the leaf spring 22 spanning therebetween. The resilient nature of the bushes 23 provide a limited degree of yaw movement in the pads.
  • Figure 8 illustrates an underneath view of the seat where a lateral bar 24 passing through the (inboard) lugs 21 at the front side of the seat pads 14 provides a horizontal axis about which the front side of the pads have a degree of movement.
  • the lateral bar 24 is stabilised by outboard lugs 25 extending underneath the pads 14.
  • each pad In totality the mechanism is designed to articulate each pad using a rose joint pivot system, accompanied by a leaf spring/bush arrangement.
  • Each pad therefore, has a limited degree of movement in several directions to adapt to a sitting person, but yet direct said person into an optimum position based around the incline angle of the seat pads. Once seated a person is maintained in an optimal and comfortable position which, so far as the shape of the spine is concerned, emulates standing.
  • each seat pad is able to vary its height, towards the rear, in a linked way, relative to the other pad. This addresses the fact that it is essential for comfortable sitting that one side of the pelvis might be slightly higher than the other as in most standing people.
  • the preferred seat pads of the invention have some degree of movement about at least four axes and two fulcra. Particularly, the pads move around three axes (pitch, roll, yaw) and a fourth, being the anterior-posterior axis between the back of the seat pads around which the leaf spring rotates.
  • Figures 9 to 12 illustrate the linked articulated movement of the rear of the seat pads 14 where the right-hand seat pad 14A (see Figure 10 ) is depressed lower than the left-hand pad 14B by the weight/physiology of a person (not illustrated) sitting on the seat.
  • Figure 12 particularly shows the tilting (rolling/seesawing curved arrows S) nature of the seat pads by virtue of the leaf spring 22 wherein, as one pad lowers, the other rises.
  • the linked articulated movement can be incorporated into a seat independently of the optimum sitting angle provided by the contoured pads because it addresses variations in pelvic shapes that are not solved by the sitting thigh angle alone.
  • the leaf spring 22 being resilient, also allows springing movement of the seat back 16 via its pivotal connection 17, a movement that helps in the treatment of pain in the back muscles provided by the series of "back balls" 18 located on a seat back portion.
  • the pads have a silicon mounting bush within the lug at the front and between the mountings at the back, which allow for a controlled amount of roll in the seat pad.
  • a more conventional seat back (as in an office chair) may be incorporated with the seat which is not necessarily pivotally linked to the seat pads, e.g. it could extend from elsewhere on the base/pedestal and be movable or adjustable independently.
  • the back portion 16 is self adjusting in response to a user sitting on the contoured pan 14.
  • the self adjusting back component of the invention can be used to treat pain in the postural back muscles or for the general accommodation thereof.
  • the seat is preferably manually adjustable in height only; with the result that many superfluous and wasteful manual adjustment mechanisms (as found in the prior art) can be discarded.
  • seat pads 14 when loaded with the weight of a person, should accommodate and support a user's thighs at an angle selected to be substantially 27° below the horizontal while the curved and contoured nature of the seat pads 14 comfortably prevent a user from sliding forward.
  • the pivot mechanism of the seat back 16 connected via the leaf spring could take several forms or, in the case of a stool-type design, be removed completely.
  • the two seat pads 14 can be at a fixed angle of approximately 27°.
  • Guidance for the use of the invention recommends that the users feet are flat on the floor when in the final sitting position, or at least in a position which allows the muscles thighs and legs to be relaxed.
  • the occupier might want to use a foot rest on the lower part of the chair so that lower legs could be angled backwards or in the case of the invention being used on a higher seat such as a bar stool a higher foot rest could be incorporated to support the feet.
  • the seat pads (or integrated single seat pan) include a concave portion or equivalent to cup and support each ischial tuberosisty of a user in a way which does not put undue pressure on the perineum and also avoids muscle tightening which would otherwise result from a user attempting to prevent slipping forward.
  • the seat of the invention in all forms, can be moulded in relatively few parts, e.g. all major elements of the office chair of Figures 1 to 4 can be moulded from aluminium such that it can be particularly lightweight.

Landscapes

  • Special Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Claims (15)

  1. Un siège avec une assise enveloppante conçue pour permettre aux cuisses d'un utilisateur d'être supportées dans une position entre 15 et 45 degrés par rapport au plan horizontal dans lequel l'assise enveloppante est composée de deux rembourrages de siège (14) de forme au moins partiellement concave conçus pour supporter chaque tubérosité ischiatique d'un utilisateur, et
    chaque rembourrage de siège (14) est lié à l'autre pour un mouvement de roulis, de sorte que l'abaissement d'un côté arrière d'un rembourrage (14) provoquera une élévation correspondante de l'arrière de l'autre rembourrage (14).
  2. Le siège selon la revendication 1, dans lequel les cuisses d'un utilisateur sont supportées dans une position entre 22 et 32 degrés par rapport à l'horizontale.
  3. Le siège selon la revendication 1, dans lequel, lors de l'utilisation, quand un utilisateur est assis, le siège va permettre de maintenir la colonne vertébrale de l'utilisateur pour simuler sensiblement une position debout.
  4. Le siège selon n'importe laquelle des revendications 1 à 2, dans lequel la position est sensiblement de 27 degrés par rapport au plan horizontal.
  5. Le siège selon n'importe quelle revendication précédente avec une assise enveloppante conçue pour supporter chaque tubérosité ischiatique d'un utilisateur et permettant aux cuisses d'un utilisateur d'être supportées.
  6. Le siège selon n'importe quelle revendication précédente, dans lequel l'assise enveloppante est conçue pour supporter chaque tubérosité ischiatique par une partie qui est de forme concave autour d'au moins deux axes.
  7. Le siège selon la revendication 1, dans lequel les rembourrages de siège (14) de l'invention ont un degré de mouvement autour de quatre axes et de deux points d'appui.
  8. Le siège selon la revendication 1, dans lequel la liaison est fournie par un élément élastique (22) s'étendant entre le côté arrière des rembourrages (14).
  9. Le siège selon la revendication 8, dans lequel les rembourrages de siège (14) sont attachés à l'élément élastique (22) par une connexion élastique (23), permettant un mouvement de lacet des rembourrages respectifs (14).
  10. Le siège selon la revendication 9, dans lequel l'élément élastique (22) est un ressort à lames et la connexion élastique (23) est un manchon en caoutchouc.
  11. Le siège selon n'importe laquelle des revendications précédentes, incluant en outre une partie dossier (16, 18), montée pivotante par rapport à l'assise de siège.
  12. Le siège selon la revendication 11, dans lequel la partie dossier (16, 18) est montée pivotante à une extrémité distale de celle-ci sur un élément élastique s'étendant entre un côté arrière de deux rembourrages de siège (14), une seconde connexion pivotante y étant prévue de la partie dossier vers une structure support de siège, dans lequel chaque rembourrage de siège est monté sur un côté avant de celui-ci pour un mouvement de tangage pivotant sur la structure support de siège.
  13. Le siège selon la revendication 11 ou 12, dans lequel, lors de l'utilisation, la partie dossier (16, 18) est agencée pour pivoter vers la colonne vertébrale d'un utilisateur assis en réponse à une force appliquée à l'assise enveloppante.
  14. Le siège selon n'importe quelle revendication précédente, dans lequel l'assise de siège est amortie par une couche relativement mince de rembourrage.
  15. Le siège selon n'importe laquelle des revendications précédentes, dans lequel l'assise enveloppante est fonctionnellement remplacée ou complétée par une nervure, une surface en caoutchouc antidérapante, des moyens adhésifs ou d'attache.
EP12730022.6A 2011-06-24 2012-06-21 Siège Not-in-force EP2723215B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12730022T PL2723215T3 (pl) 2011-06-24 2012-06-21 Siedzenie

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB1110748.9A GB201110748D0 (en) 2011-06-24 2011-06-24 A seat
GB1200514.6A GB2492188A (en) 2011-06-24 2012-01-13 Seat with a contoured pan
PCT/GB2012/051429 WO2012175963A1 (fr) 2011-06-24 2012-06-21 Siège

Publications (2)

Publication Number Publication Date
EP2723215A1 EP2723215A1 (fr) 2014-04-30
EP2723215B1 true EP2723215B1 (fr) 2014-11-19

Family

ID=44485116

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12730022.6A Not-in-force EP2723215B1 (fr) 2011-06-24 2012-06-21 Siège

Country Status (16)

Country Link
US (1) US20140132051A1 (fr)
EP (1) EP2723215B1 (fr)
JP (1) JP2014516748A (fr)
KR (1) KR20140046443A (fr)
CN (1) CN103747707A (fr)
AP (1) AP2014007353A0 (fr)
AU (1) AU2012273720A1 (fr)
BR (1) BR112013033308A2 (fr)
CA (1) CA2840357A1 (fr)
ES (1) ES2530177T3 (fr)
GB (2) GB201110748D0 (fr)
IN (1) IN2014DN00166A (fr)
MX (1) MX2013015433A (fr)
PL (1) PL2723215T3 (fr)
RU (1) RU2013157389A (fr)
WO (1) WO2012175963A1 (fr)

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EP3927215A4 (fr) 2019-02-21 2023-03-15 Steelcase Inc. Ensemble support corporel et procédés d'utilisation et d'assemblage de cet ensemble
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TWI744193B (zh) * 2021-02-20 2021-10-21 吳國源 骨盆傾斜偵測椅
CN113232009B (zh) * 2021-05-21 2022-10-11 河北工业大学 一种多位姿的辅助支撑外骨骼
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CN113749447B (zh) * 2021-10-25 2022-04-05 安吉轩龙家具有限公司 一种可调节的椅座
CN114194314A (zh) * 2021-12-06 2022-03-18 昆山十全塑胶五金产品有限公司 具水壶架的儿童座椅

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Also Published As

Publication number Publication date
AU2012273720A2 (en) 2014-04-17
CA2840357A1 (fr) 2012-12-27
KR20140046443A (ko) 2014-04-18
US20140132051A1 (en) 2014-05-15
IN2014DN00166A (fr) 2015-05-22
WO2012175963A1 (fr) 2012-12-27
AP2014007353A0 (en) 2014-01-31
MX2013015433A (es) 2014-10-14
EP2723215A1 (fr) 2014-04-30
AU2012273720A1 (en) 2014-01-16
BR112013033308A2 (pt) 2017-03-07
JP2014516748A (ja) 2014-07-17
PL2723215T3 (pl) 2015-04-30
RU2013157389A (ru) 2015-07-27
GB201200514D0 (en) 2012-02-29
ES2530177T3 (es) 2015-02-26
GB2492188A (en) 2012-12-26
GB201110748D0 (en) 2011-08-10
CN103747707A (zh) 2014-04-23

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