WO2014177445A1 - Chaise comprenant un mécanisme de siège - Google Patents

Chaise comprenant un mécanisme de siège Download PDF

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Publication number
WO2014177445A1
WO2014177445A1 PCT/EP2014/058321 EP2014058321W WO2014177445A1 WO 2014177445 A1 WO2014177445 A1 WO 2014177445A1 EP 2014058321 W EP2014058321 W EP 2014058321W WO 2014177445 A1 WO2014177445 A1 WO 2014177445A1
Authority
WO
WIPO (PCT)
Prior art keywords
backrest
chair
seat
horizontal
base support
Prior art date
Application number
PCT/EP2014/058321
Other languages
German (de)
English (en)
Inventor
Ekkehard STRIEN
Original Assignee
Phoenix Design Gmbh + Co. Kg
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=50549333&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2014177445(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Phoenix Design Gmbh + Co. Kg filed Critical Phoenix Design Gmbh + Co. Kg
Publication of WO2014177445A1 publication Critical patent/WO2014177445A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs

Definitions

  • the invention relates to a chair with a foot part, a base support held on the foot part, a seat part held on the base support, a backrest and a seat mechanism.
  • this can be an office chair in the present case.
  • the seat mechanism is known to hold the seat part and / or the backrest relative to each other to move and / or movable coupled to the typically rigidly held to the base support.
  • the utility model DE 20 2007 001 395 U 1 discloses a chair with a seat mechanism that holds a seat part and a backrest synchronously movable on a base support, wherein the backrest is hinged about a horizontal transverse axis to the rear pivotally on the base support and the seat part via a double joint such hinged to the base support that it performs a backward upward pivoting movement when pivoting the backrest to the rear.
  • the invention is based on the technical problem of providing a chair of the type mentioned above, which allows the user a further optimized dynamic sitting and whose seat mechanism can be realized with relatively little effort for this purpose.
  • the seat mechanism is adapted to pivotally connect the seat back to a rear portion of the seat portion about a first horizontal transverse axis to pivotally connect a second horizontal transverse axis to the base support and pivotally connect to the base support about a horizontal longitudinal axis the pivoting mobility of the backrest about the horizontal longitudinal axis, which may in particular be a local horizontal longitudinal axis, is decoupled from the pivoting movement of the backrest about the second horizontal transverse axis.
  • This seat mechanism provides with comparatively little effort an ergonomically optimized dynamic sitting on the chair available, in particular a so-called three-dimensional sitting, in which the backrest can be tilted about a horizontal pivot axis back and while the seat is synchronously mitverschwenkt about a likewise horizontal pivot axis and in which additionally the backrest and at least one rear area of the seat part can be tilted laterally.
  • the seat mechanism allows the lateral tilting movement of the backrest and at least the rear seat section area to be decoupled from the other movement possibilities, such as tilting the backrest backwards. This includes the ability to lock the lateral tilting separately and adjust with desired adjustment forces or restoring forces.
  • the directional and positional designations used herein refer to a normal starting / use position of the chair in which this is on a horizontal floor and the backrest and the seat part are in a non-pivoted basic position.
  • the horizontal longitudinal direction represents the horizontal connecting line between the front and back, the horizontal transverse direction perpendicular to the horizontal direction.
  • Horizontal here comprises both directions and axes which lie exactly in a horizontal plane, as well as directions and axes which have a horizontal main direction component and a comparatively smaller vertical direction component and therefore do not lie exactly in a horizontal plane
  • “Local horizontal longitudinal axis” is to be understood in the present case that it is not necessarily a respect to the chair stationary remaining horizontal longitudinal axis, but this longitudinal axis, by which the backrest relative to the base support can be tilted sideways, move with this tilting movement of the backrest can.
  • the seat mechanism includes as means for pivotally articulating the backrest on the base support to the local horizontal pivot axis elastic support means over which the backrest on opposite lateral side areas elastically pivotally supported on the base support, or an exactly or approximately longitudinally arranged pivot joint or a link guide.
  • the seat mechanism is further configured to pivotally connect a front region of the seat part to the base carrier by a third horizontal transverse axis.
  • the front seat portion can advantageously be moved relative to the base support, e.g. be lent backwards or forward again synchronously with the pivoting of the backrest.
  • the seat mechanism is designed to pivot the front seat portion backwards down when the backrest is pivoted from its initial position to the rear.
  • the seat mechanism includes a double joint or a slotted guide for pivotally articulating the front seat portion of the base support.
  • the seat mechanism is configured such that the second horizontal transverse axis lies behind a vertical support of the foot part and has a smaller distance therefrom than the third horizontal transverse axis. This represents a favorable coordination of the transverse axis pivoting mobility of the backrest and seat part to the rear or front.
  • the seat mechanism is configured such that the second horizontal transverse axis lies at a lower level than the third horizontal transverse axis. This can also contribute to an advantageous vote of the seat part movement to the rear or front to the tilting movement of the backrest to the rear and back again.
  • the seat mechanism is configured in such a way that the local horizontal longitudinal axis is at a level below that of the first horizontal transverse axis and above that of the second horizontal transverse axis. Also, this interpretation aspect of the seat mechanism can contribute to an optimal ergonomic dynamic sitting on the chair.
  • FIG. 1 is a schematic side view of a chair in a starting position with articulated lateral tilting mobility of the backrest
  • FIG. 2 is a schematic plan view of the chair of FIG. 1 without a lower foot portion;
  • FIG. 3 is a schematic rear view of the chair of FIG. 1 without a lower foot portion
  • FIG. 4 is a schematic front view of the chair of FIG. 1 without a lower foot portion
  • FIG. 5 shows the side view of FIG. 1 without lower foot part region with the backrest position tilted backwards
  • FIG. 6 combines the side views of FIGS. 1 and 5, without a lower foot portion, FIG.
  • FIG. 8 shows the front view of FIG. 5 in laterally tilted backrest position
  • FIG. 9 is a view corresponding to FIG. 1 without lower monteil Scheme for a chair variant with backdrop-guided lateral tilting mobility of the backrest,
  • FIG. 10 is a schematic rear view corresponding to FIG. 3 for the chair variant of FIG. 9,
  • FIG. 10 is a rear view of FIG. 10 in laterally tilted backrest position
  • FIG. 12 is a schematic side view corresponding to FIG. 9 for a further chair variant with elastic support means for the side tiltable backrest articulation
  • FIG. 12 is a schematic side view corresponding to FIG. 9 for a further chair variant with elastic support means for the side tiltable backrest articulation
  • FIG. 13 shows the rear view of FIG. 10 for the chair variant of FIG. 12, FIG.
  • Fig. 14 shows the rear view of FIG. 13 in laterally tilted backrest position
  • FIG. 15 shows a view corresponding to FIG. 1 without lower foot part region for a further chair variant.
  • a chair which can be used in particular as an office chair in a first embodiment according to the invention is schematic with its components of interest in the present case illustrated, in which Figs. 1 to 4 show it in a normal basic position.
  • the chair comprises in a conventional manner a foot part 1 with a central vertical support 1 a and a plurality of the lower end region radially outwardly extending radially outwardly horizontal supports 1 b, which carry at their radially outer end in each case a chair roller 1 c.
  • a base support 2 is held, on which in turn a seat part 3 is held, which forms a seat surface of the chair.
  • the vertical support 1 a may be constructed in the usual design of telescopically against each other longitudinally displaceable and rotatable pipe support parts to allow height adjustment and a twisting availability of the seat part 3 about a vertical longitudinal axis of the vertical support 1 a.
  • the chair further includes a movable backrest 4 and a special seat mechanism to allow for the backrest 4 and the seat part 3 movements that allow the user a three-dimensional, ergonomic dynamic sitting.
  • the seat mechanism comprises a plurality of connections, each allowing a pivoting movement of the associated parts.
  • the backrest 4 is connected via a pivot joint 5 about an associated first horizontal transverse axis 5a pivotally connected to a rear portion 3a of the seat part 3.
  • the pivot 5 is located directly on the underside of the rear seat portion 3a, and the backrest 4 is hinged thereto via a substantially horizontal extension 4a, which extends from an underside of a substantially vertical backrest portion 4b forward to the pivot joint 5.
  • the backrest 4 is coupled via a backrest support 6 to a pivot joint 7, which connects the backrest support 6 and thus the backrest 4 in total to an associated second horizontal transverse axis 7 a pivotally connected to the base support 2.
  • the pivot joint 7 is located a short distance behind the vertical support 1 a, ie see between the vertical support 1 a and the seat back defined by the backrest 4 with a shorter distance to the vertical support 1 a as the backrest part 4b.
  • the backrest support 6 extends as shown from the underside of the backrest part 4b under the leading to the seat part base extension 4a forward and obliquely down to the pivot joint 7 on the base support 2.
  • the seat mechanism comprises a pivot joint 8, with the seat part 3 in a front, ie, the backrest 4 facing away from area 3b is hinged about an associated third horizontal transverse axis 8a pivotally mounted on a front end portion of the base support 2.
  • the pivot joint 8 is designed as a double joint, whose both hinge points are in the basic position of the chair shown in Fig. 1 on a substantially vertical line, ie one above the other.
  • the double joint 8 is like the pivot joint 5 on the underside of the seat part 3 at a horizontal level higher than that of the pivot joint 7.
  • the relative to the pivot joint 7 higher position of the double joint 8 results from an obliquely forward upward course of the base support. 2 ,
  • the seat mechanism also has a pivot joint 9, by which the backrest 4 is pivotally connected about an associated horizontal longitudinal axis 9a with the backrest support 6 and thereby with the base support 2. This allows lateral tilting movements of the backrest 4.
  • Fig. 5 shows the chair in a relation to the initial or basic position of Fig. 1 tilted backwards or inclined position of the backrest 4. This back tilting of the backrest 4 is effected by pivoting the same about the pivot axis 7a on the pivot joint 7.
  • the seat part 3 is taken by the articulation on the pivot joint 5 of this pivotal movement of the backrest 4, wherein its articulated on the backrest extension 4a rear portion 3a performs a combined movement backwards and downwards.
  • Fig. 6 shows in superimposed view the chair with solid lines in the basic position of Fig. 1 and dashed lines in the tilted by a tilt angle ß backwards backrest position of Fig. 5.
  • FIG. 7 and 8 show the chair in a position with laterally about the horizontal longitudinal axis 9a on the pivot joint 9 by a tilt angle ⁇ tilted position of the backrest 4. Since the rear seat portion 3a via the pivot joint 5 with the horizontal pivot axis 5a in this lateral tilting direction is firmly connected to the horizontal backrest extension 4a and thereby with the backrest 4 in total, he is taken away from the lateral tilting movement of the backrest 4. In contrast, the front seat portion 3b remains on the double joint 8 without lateral tilting on the base support 2 is maintained. The lateral backrest tilting consequently results in a corresponding torsion of the seat part 3, with the result that its rear area 3a slopes downwards on the side towards which the backrest 4 is tilted.
  • This lateral tilting movement of the chair can be seen completely decoupled from the above-described tilting movement to the rear.
  • This contributes to the desired three-dimensional dynamic seating behavior of the chair.
  • the lateral tilting movement can be locked separately from the other possibilities of movement of the chair and adjusted in each required force. The same applies vice versa for the independence of the tilting movement of the chair to the rear or front relative to the lateral tilting movement.
  • Figs. 9 to 1 1 illustrate a variant of the chair of Figs. 1 to 8, wherein for identical and functionally equivalent elements for ease of understanding the same reference numerals are selected and insofar reference can be made to the above description of the chair of Figs. 1-8 ,
  • the chair of Figs. 9 to 1 1 differs from the chair of Figs. 1 to 8 by another realization of the pivoting of the backrest 4 about a horizontal longitudinal axis 10a, ie the lateral Lehnenkippterrorism.
  • the chair mechanism modified in this respect includes a slotted guide 10 instead of the real swivel joint 9 of the chair of FIGS. 1 to 8.
  • the slotted guide 10 is mounted in a pivoting manner.
  • the slide guide 10 includes an arcuate slide track 10b and engaging in this gate roller unit 10c, wherein one of the two parts which is rigidly connected to the backrest 4 and the other with the backrest support 6, for example, the guide roller unit 10c with the backrest support 6 and the slide track 10b , which may be formed in particular as a sliding groove, on the backrest. 4
  • this slide guide 10 is that, in this exemplary embodiment, the horizontal longitudinal axis 10a, by which the backrest 4 can be tilted laterally, passes through the center point of the circle defined by the guide arc 10b.
  • the horizontal longitudinal axis 10a thus forms, in this case, a virtual pivot axis provided by the slotted guide 10 for the lateral tilting of the backrest 4 and the rear seat section 3a coupled with it in this lateral tilting movement.
  • This virtual pivot axis 10a for the lateral backrest tilting movement in this example is higher than the pivot axis defined by the pivot 9 9a of the chair of Fig. 1 to 8. While the longitudinal axis 9a of the pivot joint 9 in the chair of Fig.
  • the exact position of the virtual pivot axis 10a can be controlled via the design of the slotted guide 10 and in particular the slide track 10b.
  • FIGS. 12 to 14 illustrate a further variant of the chair of FIGS. 1 to 8, wherein in turn identical and functionally equivalent elements are provided with the same reference numerals and to this extent reference can be made to the above explanations to FIGS. 1 to 8.
  • the chair of FIGS. 12 to 14 differs from the chair of FIGS. 1 to 8 in yet another embodiment of the pivotable articulation of the backrest 4 on the base support 2 and on the backrest support 6 extending backwards for the lateral tilting of the backrest 4 by a local one virtual horizontal longitudinal axis.
  • the seat mechanism modified for this purpose has elastic support means 12, via which the backrest 4 is elastically supported on the base support 2 or the backrest support 6 on opposite lateral side areas.
  • FIGS. 12 and 13 Schematically, two corresponding spring elements 12a, 12b are shown in FIGS. 12 and 13 for this purpose.
  • the elastic see support means 12 and the two spring elements 12a, 12b are designed so that by lateral displacement of a person sitting on the chair, the lateral tilting of the backrest 4 and the rear seat portion 3a on the loaded side down, while the opposite Page is prevented from moving upwards.
  • the lateral tilting movement of the chair ie the backrest 4 and the rear seat part area 3a
  • the spring elements 12a, 12b for example, be gas springs whose maximum length is limited by a wire rope or in another conventional manner.
  • the elastic support means may be constituted by torsion springs and technical elements laterally disposed therefrom, which prevent upward movement of the backrest 4 and the rear seat portion 3a when tilted sideways.
  • the seat mechanism in this exemplary embodiment thus provides for the lateral backrest tilting movement a virtual horizontal longitudinal axis similar to the virtual horizontal longitudinal axis 10a of the chair of FIGS. 9 to 11, but in contrast to the latter during lateral movement Lehnen tilting movement in their position changes.
  • the seat mechanism in this embodiment provides the horizontal longitudinal axis 12a for lateral backrest tilting movement as a local virtual horizontal longitudinal axis which shifts downward with increasing lateral tilting of the backrest 4 in a substantially vertical line as the backrest 4 and the rear seat portion 3a on the loaded side downwards tilt, while the opposite side area remains approximately at the same level and does not shift upwards.
  • This variant of the seat mechanism comes especially close to the biomechanical movements of a person sitting on the chair.
  • FIG. 15 illustrates another chair according to the invention as a variant of one of the chairs of FIGS. 1 to 14, such as the chair of FIGS. 9 to 11.
  • the chair of FIG. 15 has a modified seat mechanism, in which the couplings of the seat part 3 in the rear area 3a to the backrest 4 and in the front area 3b to the base support 2 are respectively realized by pivot means 13, 14, which act as transverse axes provide virtual horizontal pivot axes 13a and 14a, respectively.
  • the rear seat portion 3a is coupled via a slotted guide 13 with the lower horizontal extension 4a of the backrest 4, which provides the virtual horizontal transverse axis 13a and in their design, for example, the top of the chair of Fig. 9 to 1 1 illustrated slide guide 10 correspond can.
  • the virtual horizontal transverse axis 13a is preferably at or slightly above the height level of the seat part 3, which in turn is made to be comparatively close to the biomechanical pivot point of a person sitting on the chair.
  • the front seat portion 3b is coupled to the base support 2 via a slotted guide 14 which provides the associated virtual horizontal transverse axis 14a.
  • the position of the virtual horizontal transverse axis 14a can be controlled or set in a desired manner by appropriate design of the slotted guide 14.
  • the invention provides a chair with a chair mechanism available, with which a comparatively small design effort can achieve a dynamic three-dimensional sitting, which corresponds very largely to the biomechanical conditions of the person sitting on the chair ,
  • the seat remains in the front area always horizontal, while the rear area of the lateral tilting movement follows the backrest.
  • the seat depth i. the distance between the front edge of the seat and the backrest is always about the same.
  • the lowering of the seat front edge largely corresponds to the natural movement of the seated person.
  • the chair may in particular be an office chair, but the invention can be used in the same way with the same functionalities and advantages also for other chair types.
  • the invention includes, in addition to the numerous other embodiments shown, i.a. Also, those in which the backrest and / or the seat part is constructed of a plurality of relatively movable parts or the seat part is integral with the backrest. Conventional chairs can be retrofitted by retrofitting with the seat mechanism chairs of the invention.

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  • 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)

Abstract

L'invention concerne une chaise comprenant une partie pied (1), un support de base (2) retenu sur la partie pied, une partie siège (3) retenue sur le support de base, un dossier (4) et un mécanisme de siège. Dans la chaise selon l'invention, le mécanisme de siège est conçu pour relier le dossier à une région arrière de la partie siège de manière à pouvoir osciller autour d'un premier axe transversal horizontal (5a) et au support de base de manière à pouvoir osciller autour d'un deuxième axe transversal horizontal (7a) ainsi que pour relier le dossier au support de base de manière à pouvoir osciller autour d'un axe longitudinal horizontal (9a), la capacité du dossier d'osciller autour de l'axe longitudinal horizontal étant découplée de la capacité du dossier d'osciller autour du deuxième axe transversal horizontal. L'invention peut être utilisée par exemple comme chaise de bureau.
PCT/EP2014/058321 2013-05-03 2014-04-24 Chaise comprenant un mécanisme de siège WO2014177445A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013208178.2 2013-05-03
DE201310208178 DE102013208178B4 (de) 2013-05-03 2013-05-03 Stuhl mit Sitzmechanik

Publications (1)

Publication Number Publication Date
WO2014177445A1 true WO2014177445A1 (fr) 2014-11-06

Family

ID=50549333

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/058321 WO2014177445A1 (fr) 2013-05-03 2014-04-24 Chaise comprenant un mécanisme de siège

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DE (1) DE102013208178B4 (fr)
WO (1) WO2014177445A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9620137B2 (en) 2014-05-16 2017-04-11 Qualcomm Incorporated Determining between scalar and vector quantization in higher order ambisonic coefficients
US10383448B1 (en) 2018-03-28 2019-08-20 Haworth, Inc. Forward tilt assembly for chair seat

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5909924A (en) * 1997-04-30 1999-06-08 Haworth, Inc. Tilt control for chair
DE10064204A1 (de) * 2000-12-22 2002-07-04 Wilkhahn Wilkening & Hahne Stuhl
DE202007001395U1 (de) 2007-01-31 2008-06-05 Sander, Armin Stuhl, insbesondere Bürostuhl
DE102007002284A1 (de) 2002-09-12 2008-07-17 Wilkhahn Wilkening + Hahne Gmbh + Co. Stuhl
EP2520199A1 (fr) * 2011-05-04 2012-11-07 Eckhard Hansen Meubles destinés à sýasseoir
DE102011051966A1 (de) 2011-07-20 2013-01-24 Interstuhl Büromöbel GmbH & Co. KG Stuhl
WO2014029696A1 (fr) * 2012-08-23 2014-02-27 Simon Desanta Chaise, en particulier chaise de bureau

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5909924A (en) * 1997-04-30 1999-06-08 Haworth, Inc. Tilt control for chair
DE10064204A1 (de) * 2000-12-22 2002-07-04 Wilkhahn Wilkening & Hahne Stuhl
DE102007002284A1 (de) 2002-09-12 2008-07-17 Wilkhahn Wilkening + Hahne Gmbh + Co. Stuhl
DE202007001395U1 (de) 2007-01-31 2008-06-05 Sander, Armin Stuhl, insbesondere Bürostuhl
EP2520199A1 (fr) * 2011-05-04 2012-11-07 Eckhard Hansen Meubles destinés à sýasseoir
DE102011051966A1 (de) 2011-07-20 2013-01-24 Interstuhl Büromöbel GmbH & Co. KG Stuhl
WO2014029696A1 (fr) * 2012-08-23 2014-02-27 Simon Desanta Chaise, en particulier chaise de bureau

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9620137B2 (en) 2014-05-16 2017-04-11 Qualcomm Incorporated Determining between scalar and vector quantization in higher order ambisonic coefficients
US10383448B1 (en) 2018-03-28 2019-08-20 Haworth, Inc. Forward tilt assembly for chair seat

Also Published As

Publication number Publication date
DE102013208178B4 (de) 2015-04-02
DE102013208178A1 (de) 2014-11-06

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