EP1911374A1 - Siège avec dossier ergonomique - Google Patents

Siège avec dossier ergonomique Download PDF

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Publication number
EP1911374A1
EP1911374A1 EP07405304A EP07405304A EP1911374A1 EP 1911374 A1 EP1911374 A1 EP 1911374A1 EP 07405304 A EP07405304 A EP 07405304A EP 07405304 A EP07405304 A EP 07405304A EP 1911374 A1 EP1911374 A1 EP 1911374A1
Authority
EP
European Patent Office
Prior art keywords
backrest
support
backrest part
seat according
area
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
Application number
EP07405304A
Other languages
German (de)
English (en)
Other versions
EP1911374B1 (fr
Inventor
Thomas Kluser
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.)
Provenda Marketing AG
Original Assignee
Provenda Marketing AG
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 Provenda Marketing AG filed Critical Provenda Marketing AG
Publication of EP1911374A1 publication Critical patent/EP1911374A1/fr
Application granted granted Critical
Publication of EP1911374B1 publication Critical patent/EP1911374B1/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
    • A47C7/36—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

Definitions

  • the invention relates to a passenger seat with a backrest part, which conforms ergonomically to the spine of a user.
  • a seat in particular a vehicle seat known, which has a rigid backrest support, at the upper end of a flexible back shell is hinged.
  • the back shell has a flexible boss area and is biased by a spring.
  • the spring curves the back shell, especially in the boss area. By loading the back shell this is stretched in the boss area.
  • At the lower end of the back shell is guided by a trapezoidal hinged pair of levers or a backdrop to the by a Load arising increase in distance between the upper and the lower end of the back shell can.
  • a chair whose back shell has a neck support.
  • the back shell In the neck support, the back shell is hinged to a back support.
  • a lever arm At the lower end of the back shell, a lever arm is formed, which is perpendicular to the back shell and is articulated at its spaced from the back shell end on the back support. By pressing on the back shell this is curved in the chest area, while the lever arm and the head rest are pivoted in opposite directions.
  • the spring force of the backrest shell counteracts such a curvature.
  • the back in the chairs described, the back, so long as it is based on the entire back of the backrest, supported so that the boss area and the Houseschensululde adapt to the circumstances of the leaning back.
  • the back is evenly supported and yet has a freedom of movement, so that a losdosierender back is supported as well as a hunchback.
  • a disadvantage of these chairs is that the adaptation of the support form to the back shape can take place only within narrow areas. It is therefore necessary that the user of the chair sits correctly on the seat surface.
  • the adjustment range of the support form of the backrest part should be extended compared to the prior art and can compensate for a deviation from an ideal sitting position.
  • a chair according to the invention or a person seat naturally has a support and a seat surface.
  • he has at least one on the support Supported support part for supporting a backrest part.
  • It also has the backrest part which is connected to the support part at at least two connection points spaced apart from one another in the backbone direction.
  • the connection points are therefore formed between the support part and the backrest part, namely at least one in an upper region and at least one in a lower region.
  • the backrest part comprises a molded part which, between a first backrest end close to the seat surface and a second, upper backrest end spaced apart from it in the backbone direction, defines a backbone anatomically curved support form with a convexly curved boss area and a concavely curved chest area.
  • the molded part and thus the curved support shapes of the backrest part can be plugged or bent under the influence of a load acting on the backrest part, changing load by a chair user about bending axes directed perpendicularly to the backbone direction.
  • the backrest part is mounted on the support part at at least one connection point in such a way that the first back end and the second backrest end can extend away from one another during stretching of the support form and approach one another during curvature of the support form.
  • the object is achieved in that the carrier part is mounted on the support about a horizontal pendulum axis, which is formed between the lower connection point and the upper connection point, pivotally.
  • the backrest is formed together with the support member as a pendulum back, a balance of the seat position is done on this pendulum back.
  • the adjustment of Bossbümmung and chest curvature is therefore largely independent of the seating position of the chair user.
  • the support pressures on the backrest are balanced at all times, so that the support form is under uniform pressure and can therefore optimally adapt to the shape of the back.
  • the adaptability of the support form is thus relieved of the task of correcting a seating position.
  • the support form completely adapts to a back posture occupied by the user and lies in every sitting position over the entire extent extending in the backbone direction on the back and makes its movements and shape changes by changing the shape of the support form.
  • the backrest part is mounted on at least one connection point in the backbone direction against a spring force variable position.
  • the spring element may form the backrest part or the molded part itself. It can also be an independent part of it. Such acts independently of the spring force of the molding on the distance between the backrest ends.
  • a first type is that the spring force stretches the molding. In this case, the molding is bendable in the chest area by the load.
  • a second type is that the molded part in the boss area is stretchable by the load and the spring force curves the molded part.
  • the backrest part in particular the molded part in the convexly curved Boss Scheme can be supported on a tension element, which tension element is stretched between the two connection points.
  • the tension element does not have to be fastened directly to the connection points, but merely to ensure that the connection points are essentially in a maximum distance defined by the tension element. This spacing restriction may also apply the tension member to the ends of the backrest member when attached to these ends.
  • the molded part in the convexly curved boss area is made stiffer with respect to pressure on the backrest part than in the concavely curved chest area. As a result, the chest area deforms more and the boss remains supported even under increased pressure.
  • the backrest portion When the user presses on the concave curvature of the thoracic spine supporting portion of the backrest portion, the backrest portion is curved and the length of the backrest portion is reduced. Due to the flexibility of the backrest part, the position of the boss can be corrected by pressure on the boss and chest area, whereby the distance between the ends of the backrest part does not necessarily have to change when the boss changes position.
  • the backrest part may also be the molded part formed and the backrest part may be mounted on the support member such that even a burden of Boss Suites against the The backrest part acts exciting spring force and leads to a reduction of the radius of curvature in the chest area.
  • the backrest part in particular the molded part, is supported in the convexly curved boss area on a tension element between the two fastening points.
  • the tensioning element interconnecting the fastening points is thereby deflected under load in Boss Kunststoff. This deflection causes an approximation of the two attachment points.
  • the curvatures of the molded part must have lower radii under load than with an unloaded backrest part. This causes the boss area to conform to the back shape of the backrest and not flatten.
  • the molded part in the convexly curved boss area is made stiffer with respect to pressure on the backrest part than in the concavely curved chest area.
  • This rigidity difference given the conditions of the under-mold, results in pressure on the boss resulting in a depression of the concave bumps following the boss and therefore a reduction in the radius of curvature in the chest area. Pressure on the boss therefore causes back pressure in the shoulder area, so that adjusts a pressure equalization over the length of the back.
  • the molding is pivotally mounted in at least one of the attachment points about an axis behind the backrest part, so that a caused by a load between the attachment points pivoting of the backrest part in this attachment point leads to a shortening of the distance between the backrest ends.
  • This embodiment can be divided into two subtypes. In the first subspecies, the molded part is curved by the spring element, so that a pressure on the backrest can lead to an extension of the boss area. In the second subspecies, the molded part is stretched by the spring element, so that a pressure on the chest area can lead to a shortening between the backrest ends. Thanks to the articulation behind the backrest part is achieved that an extension and shortening of the distance between the backrest ends can occur.
  • the positionally variable in the backbone direction connection between the backrest part and the support part may be provided at the upper or lower joint. It can also be provided both at the upper and the lower joint.
  • the backrest part transmits compressive forces to the carrier part in the backbone direction.
  • the backrest part is therefore sensitive to pressure on the boss and is thereby stretched. Pressure on the concave portion of the backrest part also tends to lead to an extension of the convex area, so the boss.
  • the backrest part transfers tension to the support part in the backbone direction.
  • the backrest part therefore reacts sensitively to pressure on the concave area and reacts by reducing the radius of curvature in the concave area, resulting in a shortening of the distance between the backrest ends and / or an enlargement of the radius of curvature in the convex boss area.
  • the displacement is preferably performed such that the backrest part is pivoted at a displacement with or with respect to the connection point at the connection point about an optionally imaginary pivot axis directed parallel to the bending axes.
  • This can be done by a curved guide rail or by a displaceable pivot axis in connection with the pivoting force-enforcing means at the displacement point.
  • Advantage of this pivoting is that the curvature of the backrest part is controlled as a function of the pressure load and therefore specifically defined, for example, by the curvature of a guide rail.
  • the behavior of the backrest part can be planned and designed by the formation of the pivoting defining guide means.
  • a curved guide rail and a sliding part cooperating with the guide rail and displaceable along the curvature of the guide rail are preferred.
  • the guide rail may be formed on the backrest part or on the support part.
  • the Sliding part should follow the curvature and thereby transfer the change in angle of curvature on the backrest part, or if the guide rail is present on the backrest part, forcibly swivel the guide rail about the center of the radius of curvature. This has the advantage of being able to plan the sequence of movements, since the plannable curvature of the guide rail is transferred to the movement of the backrest part.
  • the traction means defines the distance between the two connection points in the unloaded basic position.
  • the backrest part can itself serve as a traction device. But it can also be provided separate from the backrest part traction means.
  • the traction means may be formed variable in length so as to achieve adjustability of the curvature of the backrest part in the normal position.
  • the backrest part may be in one place, e.g. be supported at the boss, or at several points on the traction device. Pressure on this point causes in the consequence a shortening of the distance of the attachment points of the traction means on the carrier part, or a shortening of the distance between the connection points between the backrest part and the carrier part. Pressure on the supported boss thus does not necessarily cause an extension of the convex boss area, but a shortening of the distance between the connection points and thereby a reduction of the radii of curvature of the curved parts of the backrest part. This leads to a pressure equalization between the lumbar region (boss), the lower end region (pelvis, pelvic edge) and the upper end region (thoracic spine) of the double S-shaped curved backrest part.
  • a pendulum behavior of the backrest part is achieved by the support member is mounted pivotably about a horizontal pendulum axis on the support.
  • a pressure equalization between the pressures in the upper and in the lower region of the backrest part is established in a manner known per se.
  • This pressure equalization has the consequence that the effect of the form of the back which adapts to the shape of the back is maximally utilized.
  • the biasing of a positionally adjustable in the backbone attachment of a flexible backrest part allows one of a frame and a stretched on the frame support fabric existing backrest part in itself flexible and form a total conforming to the back shape.
  • the side parts of the frame are flexible.
  • the flexibility of the side parts may be limited in some areas by a defined range of motion between frame members from which the side panels are constructed. This allows a predetermination of the possible support forms that can take the backrest part.
  • the upper and lower end portion of the frame are biased by spring means expediently away from each other. But they can also be biased towards each other, so that the side parts of the frame in addition to the pressure, which is caused by the train in the textile covering in the side panel, also have to absorb the pressure generated by the spring means.
  • the two side parts are preferably supported by means of several tendons against each other. These extend horizontally or diagonally from a frame member of the left side part to a frame member of the right side part. These tendons are used to maintain the distance between the two side parts and therefore the relief of the joint areas between adjacent frame members of a side part.
  • the backrest part 11 shown in FIG. 1 is anatomically shaped in a basic position according to FIG. 1A. That is, it is a convex boss 13 designed as a lumbar support, below the boss 13 is a concave portion 15 is formed to support the pelvis or pelvic edge of a user. Above the boss is 13 a concave portion 17 is formed for supporting the thoracic spine and the shoulder regions of a user.
  • a respective storage of the backrest part on the support part 21 is formed. These define the upper joint 20 and the lower joint 30 of the backrest part 11 with the support part 21.
  • the backrest part 11 is simply hinged to the support member 21 about a horizontal axis.
  • the backrest part is articulated on a lever 41, which in turn is articulated on the support part.
  • the lever 41 is pulled with a spring 43 in an upper position.
  • the backrest part is stretched.
  • the lever moves against the spring force from the upper position to a lower position.
  • a spring action can be used, which inherits the backrest part 11, or, as shown, a separate from backrest part and molding spring 43 are used.
  • the support part 21 is rigid. It is articulated about a pendulum axis on the support 37.
  • the pendulum axis 35 is located in an area around a lower, the distance between the lower to the upper junction 20, 30 third point.
  • the pivoting movement about the pendulum axis is, as is known in conventional pendulum back, cushioned.
  • connection points 20,30 there is a tension bias between the joints 20,30.
  • the support member 21 is resilient and pulls the two connection points 20, 30 apart. This force is opposed by a drawstring 24, e.g. the two connection points 20,30 - or two other, spaced from the connection points of the carrier part 11 - with each other.
  • the backrest part 11 can be deformed as a result of an action of the back of a user.
  • a deformation since the distance between the two connection points 20, 30 can not be larger, but only smaller, only lead to a reduction of the radius of curvature of a curvature of the backrest part. As a result, the joints are approximated or another radius of curvature is increased. If the joints approach each other, the tension band 24 becomes loose. It may be the drawstring but also against the backrest part 11 simply or repeatedly supported.
  • a support 26 of the boss 13 is provided. Due to the deformation of the backrest part 11, the boss is pushed back and the tension band 24 is bent out of the extended position at a defined point. The deflection of this point can only be done in one measure, as is made possible by the shortening of the distance between the interconnected by the tension band points of the support member 21.
  • the backrest part is shown in the basic position.
  • Figure 2B it is shown loaded.
  • the concave support form for the thoracic spine is more curved than in the basic position.
  • the boss 13 is pushed back.
  • the lower and the upper end of the backrest part are pushed forward due to the shortening of the distance between the ends of the arcuate, elastic support part 21 and due to the pivoting in the connection points.
  • the backward movement of the boss is limited by the tension band 24, so that the shortening of the distance between the connection points leads to a reduction of the radii of curvature in both the concave and in the supported convex support areas.
  • FIG. 3 shows a particular application of the second embodiment.
  • the particular embodiment consists in that the backrest part 11 consists of a frame 25 with flexible side parts 27 and a textile 29 spanned on the frame.
  • the side parts are divided into frame members 31. These frame members are movable against each other to a limited extent. Between two frame members 31, a kind of hinge joint is formed, and this is movable between two stop positions.
  • the hinges are movable around horizontally lying bending axes.
  • the frame members 31 abut each other so that the radii of curvature are the smallest. By loading these are then enlarged.
  • the chair back with backrest part 11 and support member 21 are formed as a pendulum back. They are pivotable about a pendulum axis 35 on the support 37. This pendulum axis 35 is arranged after about a third on the route from the lower to the upper junction 20, 30. The pivoting movement about the pendulum axis is cushioned in a known manner.
  • This backrest construction is suitable for office chairs. Thanks to the upper and lower support of the backrest part, it can be assumed that this construction is also suitable for motor vehicle seats.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
EP07405304A 2006-10-10 2007-10-10 Siège avec dossier ergonomique Not-in-force EP1911374B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH16202006 2006-10-10

Publications (2)

Publication Number Publication Date
EP1911374A1 true EP1911374A1 (fr) 2008-04-16
EP1911374B1 EP1911374B1 (fr) 2010-08-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07405304A Not-in-force EP1911374B1 (fr) 2006-10-10 2007-10-10 Siège avec dossier ergonomique

Country Status (2)

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EP (1) EP1911374B1 (fr)
DE (1) DE502007004698D1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2000056A1 (fr) * 2007-06-06 2008-12-10 Klöber GmbH Dossier flexible pour un siège de travail
DE102008036130A1 (de) * 2008-08-01 2010-02-04 Sedus Stoll Ag Neigbare Rückenlehne
WO2012152399A1 (fr) * 2011-05-06 2012-11-15 Haworth, Inc. Article de siège, en particulier chaise de bureau
US20150102647A1 (en) * 2013-10-10 2015-04-16 James E. Grove Dynamic lumbar support for a chair
US9504325B2 (en) 2011-06-08 2016-11-29 Haworth, Inc. Seat, in particular an office chair
US9526339B2 (en) 2012-09-20 2016-12-27 Steelcase Inc. Control assembly for chair
US9913539B2 (en) 2013-03-15 2018-03-13 Haworth, Inc. Office chair
US10182657B2 (en) 2016-02-12 2019-01-22 Haworth, Inc. Back support for a chair
CN112220285A (zh) * 2020-11-11 2021-01-15 东莞贯新幼童用品有限公司 一种摆动装置
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof

Families Citing this family (14)

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USD793787S1 (en) 2016-02-12 2017-08-08 Haworth, Inc. Portion of a back support for a chair
USD779251S1 (en) 2016-02-12 2017-02-21 Haworth, Inc. Lumbar support for a chair
USD784749S1 (en) 2016-02-12 2017-04-25 Haworth, Inc. Lumbar support for a chair
USD779255S1 (en) 2016-02-12 2017-02-21 Haworth, Inc. Headrest for a chair
USD782241S1 (en) 2016-02-12 2017-03-28 Haworth, Inc. Back support for a chair
USD779253S1 (en) 2016-02-12 2017-02-21 Haworth, Inc. Back support for a chair
USD779254S1 (en) 2016-02-12 2017-02-21 Haworth, Inc. Armrests for a chair
USD782859S1 (en) 2016-02-12 2017-04-04 Haworth, Inc. Back support for a chair
USD779248S1 (en) 2016-02-12 2017-02-21 Haworth, Inc. Armrests for a chair
USD779252S1 (en) 2016-02-12 2017-02-21 Haworth, Inc. Back support for a chair
USD779250S1 (en) 2016-02-12 2017-02-21 Haworth, Inc. Portion of a back support for a chair
KR20180064752A (ko) * 2016-12-06 2018-06-15 이상필 거북목 교정용 의자
US11825949B2 (en) 2021-05-04 2023-11-28 Michael David Collier Ergonomic motion chair
US11229291B1 (en) 2021-05-04 2022-01-25 Michael David Collier Ergonomic motion chair

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WO2003099071A1 (fr) * 2002-05-20 2003-12-04 Herman Miller, Inc. Structure de siege comportant un element de support de corps reglable
US20050275263A1 (en) * 2004-06-10 2005-12-15 Norman Christopher J Back construction with flexible lumbar
US7032971B2 (en) 2001-03-14 2006-04-25 David Nicholas Lewis Williams Seat backs
EP1905326A1 (fr) 2006-09-29 2008-04-02 Sunrise Medical HHG Inc. Ensemble de dossier d'un fauteuil roulant modulable

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
US7032971B2 (en) 2001-03-14 2006-04-25 David Nicholas Lewis Williams Seat backs
WO2003099071A1 (fr) * 2002-05-20 2003-12-04 Herman Miller, Inc. Structure de siege comportant un element de support de corps reglable
US20050275263A1 (en) * 2004-06-10 2005-12-15 Norman Christopher J Back construction with flexible lumbar
EP1905326A1 (fr) 2006-09-29 2008-04-02 Sunrise Medical HHG Inc. Ensemble de dossier d'un fauteuil roulant modulable

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2000056A1 (fr) * 2007-06-06 2008-12-10 Klöber GmbH Dossier flexible pour un siège de travail
DE102008036130A1 (de) * 2008-08-01 2010-02-04 Sedus Stoll Ag Neigbare Rückenlehne
DE102008036130B4 (de) * 2008-08-01 2014-12-18 Sedus Stoll Ag Neigbare Rückenlehne
US9486081B2 (en) 2011-05-06 2016-11-08 Haworth, Inc. Item of seating furniture, in particular office chair
WO2012152399A1 (fr) * 2011-05-06 2012-11-15 Haworth, Inc. Article de siège, en particulier chaise de bureau
US10111525B2 (en) 2011-06-08 2018-10-30 Haworth, Inc. Seat, in particular an office chair
US10638841B2 (en) 2011-06-08 2020-05-05 Haworth, Inc. Seat, in particular an office chair
US9504325B2 (en) 2011-06-08 2016-11-29 Haworth, Inc. Seat, in particular an office chair
US11076696B2 (en) 2011-06-08 2021-08-03 Haworth, Inc. Seat, in particular an office chair
US9826836B2 (en) 2011-06-08 2017-11-28 Haworth, Inc. Seat, in particular an office chair
US10206507B2 (en) 2012-09-20 2019-02-19 Steelcase Inc. Control assembly for chair
US9526339B2 (en) 2012-09-20 2016-12-27 Steelcase Inc. Control assembly for chair
US9861201B2 (en) 2012-09-20 2018-01-09 Steelcase, Inc. Chair assembly
US9918552B2 (en) 2012-09-20 2018-03-20 Steelcase Inc. Control assembly for chair
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
US9844267B2 (en) 2012-09-20 2017-12-19 Steelcase Inc. Chair back mechanism and control assembly
US9913539B2 (en) 2013-03-15 2018-03-13 Haworth, Inc. Office chair
US9357849B2 (en) * 2013-10-10 2016-06-07 James E. Grove Dynamic lumbar support for a chair
US20150102647A1 (en) * 2013-10-10 2015-04-16 James E. Grove Dynamic lumbar support for a chair
US10182657B2 (en) 2016-02-12 2019-01-22 Haworth, Inc. Back support for a chair
US10729250B2 (en) 2016-02-12 2020-08-04 Haworth, Inc. Back support for a chair
US11805914B2 (en) 2016-02-12 2023-11-07 Haworth, Inc. Back support for a chair
US11910934B2 (en) 2019-02-21 2024-02-27 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
US11602223B2 (en) 2019-02-21 2023-03-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11786039B2 (en) 2019-12-13 2023-10-17 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11805913B2 (en) 2019-12-13 2023-11-07 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
CN112220285A (zh) * 2020-11-11 2021-01-15 东莞贯新幼童用品有限公司 一种摆动装置

Also Published As

Publication number Publication date
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DE502007004698D1 (de) 2010-09-23

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