EP3295829A1 - Chaise, en particulier chaise de bureau ou de conférence, procédé de fabrication d'une chaise - Google Patents

Chaise, en particulier chaise de bureau ou de conférence, procédé de fabrication d'une chaise Download PDF

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Publication number
EP3295829A1
EP3295829A1 EP17180500.5A EP17180500A EP3295829A1 EP 3295829 A1 EP3295829 A1 EP 3295829A1 EP 17180500 A EP17180500 A EP 17180500A EP 3295829 A1 EP3295829 A1 EP 3295829A1
Authority
EP
European Patent Office
Prior art keywords
support
seat
armrest
backrest
chair
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
EP17180500.5A
Other languages
German (de)
English (en)
Other versions
EP3295829B1 (fr
Inventor
Peter Maier
Kurt Buntru
Judith Daur
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.)
Sedus Stoll AG
Original Assignee
Sedus Stoll AG
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Filing date
Publication date
Application filed by Sedus Stoll AG filed Critical Sedus Stoll AG
Publication of EP3295829A1 publication Critical patent/EP3295829A1/fr
Application granted granted Critical
Publication of EP3295829B1 publication Critical patent/EP3295829B1/fr
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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
    • 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
    • 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
    • A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests

Definitions

  • the present invention relates to a chair, in particular conference or office chair, and a method for producing such a chair.
  • Office swivel chairs exist with a variety of configurations of a pan or synchronous mechanism.
  • a synchronous mechanism provides a precise sequence of movements and has an integrated spring, which provides a bias for the movement.
  • An office swivel chair with swivel mechanism is for example in the document US 2002/0149247 A1 described.
  • Base and handlebars such a pivot mechanism are designed relatively massive. Overall, therefore, it requires a relatively large amount of space, so that the entire structure of such office swivel chair below the seat support looks very massive, which is particularly disadvantageous in design aspects.
  • the European patent application EP 2 996 326 A1 describes a chair, wherein a seat support is connected in a front area by means of a sliding guide with a support member, so in this way a mobility of the seat support is provided opposite the support part.
  • a backrest support is pivotally connected to the seat support and the support part, so that a pivoting backwards of the backrest support pivots the seat support to a certain extent along the backdrop.
  • a biasing spring here a torsion spring
  • the present invention seeks to provide an improved chair, in particular conference or office chair.
  • the idea underlying the present invention is to use an armrest support of a chair synchronously or synchronously pivotable by means of a translation as a force storage element for a predetermined sequence of movements during pivoting of the backrest support and the seat support coupled therewith via the translation.
  • the armrest carrier is coupled with the seat carrier and the backrest carrier. When pivoting the armrest carrier is stretched and transmits so a the backrest support and the seat carrier in the upright position restoring force.
  • the structure of the chair can thus be made much slimmer, which is aesthetically pleasing and thus advantageous from a design point of view.
  • the armrest support may be provided for supporting an armrest body or only an armrest cushion.
  • the armrest carrier can also directly form an armrest body.
  • the translation is provided in particular as a replacement for a conventional synchronizing mechanism and preferably operates synchronously similar, so that when pivoting in a predetermined sequence of movements as described in a synchronous mechanism. Accordingly, the backrest support and the seat support pivot in a predetermined manner in each case in absolute terms and relative to each other. The seat support and the backrest support thus pivot different degrees. Furthermore, the seat support is preferably lifted slightly.
  • the functionality of a synchronous mechanism with the known advantages, such as avoiding the shirt pull-out effect and the like, thus advantageously remains from a user's perspective.
  • the armrest carrier designed as a force storage element also undergoes elastic deformation during rearward pivoting due to the ever increasing prestressing and thus also one describes certain movement.
  • a position, in particular an inclination of the armrest carrier is advantageously adapted individually during pivoting.
  • a sequence of movement of the armrest carrier is thus at least sectionally different from that of the seat support and the backrest support during pivoting.
  • the armrest carrier has a first and a second end, one of which is coupled to the seat support and one to the backrest support.
  • the coupling is rotationally fixed at the first end and rotatably provided at the second end.
  • a right and a left armrest support of the chair are each formed in one piece and thus each have a first and second end.
  • the respective first and / or second end may also be formed or connected to a cross member connecting the armrest carriers.
  • the armrest carrier is rotatably coupled to the seat support at the first end and rotatably coupled to the backrest support at the second end.
  • the armrest support may be designed such that a screw which attaches the armrest support to the seat support can be attached in a non-prestressed state so that the pretensioning when the armrest support is screwed tightly adjusts to the seat support.
  • a bias voltage can thus be applied in a simple manner, so that the assembly is simplified.
  • the armrest carrier has a curved shape, the curved shape enclosing an angle greater than 180 ° overall.
  • the included angle is greater than 225 °, more preferably greater than 270 °. It is preferably a thin curved support. In this way, in combination with the bearing rotatable at one end and rotatable at the other end storage at the same time a tension or compression spring-like and a spiral or bending spring-like force storage effect of the armrest support can be provided.
  • the armrest carrier has an elastically deformable plastic material.
  • it is a fiber-reinforced plastic.
  • glass fiber reinforced polyamide for example, with 30% glass fiber content (PA-GF30) is used.
  • PA-GF30 glass fiber reinforced polyamide
  • the armrest carrier consists at least predominantly of the plastic material. This advantageously has a high strength and a certain elastic deformability, which is desirable for the representation of a force storage element.
  • the plastic material is advantageously very freely formable in the production, so that in particular a strongly curved shape, in particular compared to metal materials, is easy to produce, for example by injection molding. About that In addition, it is advantageous in terms of design aspects externally without much reworking work freely designable and can be dyed through. Thus, reworking can be advantageously avoided.
  • the translation is coupled to a seat base.
  • the translation thus provides a force deflection between the backrest support, seat support and seat base and, for this purpose, has a first and a second pivot point, which are fixed relative to the seat base. Further, it has a third and a fourth pivot point which are fixed relative to the seat support.
  • the first pivot point is coupled to the fourth pivot point via a first link and the second pivot point to the third pivot point via a second link, wherein the first link is fixedly connected to the backrest support or formed integrally with the backrest support.
  • It is thus a quadrangular, in particular parallelogram-like, construction of the translation with two each fixed to the seat base and the seat support pivot points.
  • the translation comes without sliding joint or slide guide and is thus free of scenes. In this way, the motion sequence of a synchronous mechanism is realized with a very slim design.
  • the chair may in one embodiment be a swivel chair, such as an office swivel chair or conference swivel chair.
  • the seat base is attached to a swivel foot.
  • the first and the second link are arranged inclined in the same direction in the same direction and inclined in the rearwardly pivoted position also in this direction. It is thus a parallelogram-like arrangement, however, depending on the design of the movement, deviations from a parallelism of the legs, in particular of the first and second link, are possible or even preferred.
  • a rectified or substantially rectified movement is provided at the third and fourth pivot point, so that the movement sequence is particularly harmonious.
  • the seat support is instead raised in comparison to the backrest support and only slightly pivoted.
  • an inclination of the first and second links to a vertical in the upright position is greater in each case than in the position pivoted backwards.
  • substantially rectified elevation of the third and fourth pivots is provided.
  • the third pivot point is raised slightly stronger than the fourth pivot point, in particular by a total of 20 mm to 30 mm.
  • the direction of the inclination is provided facing away from the backrest support.
  • a force acting in the direction of gravity seat force does not need to be supported by the designed as a force storage element armrest carrier, but only a backrest force.
  • a material of the armrest carrier may therefore comprise plastic or fiber-reinforced plastic.
  • the fourth pivot point is arranged in a rear region and the third pivot point in a front region of the seat carrier, wherein the second link has a greater length and / or a greater inclination than the first link.
  • the seat support is raised more in pivoting from the upright to the rearwardly pivoted position in the front region than in the rear region, so that the seat support is easily pivoted backwards.
  • the length and / or inclination of the first and second link are respectively provided such that a ratio of a pivoting angle of the backrest support to a pivoting angle of the seat carrier in the rearwardly pivoted position 2.5 to 1 to 3.5 to 1, especially 3 to 1, is.
  • the backrest support is pivotable 21 ° to the rear, while the seat support is pivotable 7 ° backwards.
  • the translation on a stop which limits a pivoting range of the seat support and backrest support in the upright position such that upon reaching the stop a backrest support in the upright position on the stop holding bias of the armrest support.
  • the backrest is upright in this position.
  • the stop is preferably provided at the third and at the fourth pivot point, that is, there are preferably two parallel stops close to the seat support. In this way, those who are in contact with the stop Handlebar not burdened with excessively strong moments. The kinematic square of the translation is thus protected by a squeezing, so that the seat support can not tilt unintentionally forward.
  • the stop or another stop and the pivoting range in the rearwardly pivoted position, for example, to a maximum of 20 ° to 30 °, preferably a maximum of 20 ° to 25 °, more preferably about 21 °.
  • the backrest support is at least partially designed elastically deformable.
  • a backrest frame fastened to the backrest support can be designed to be elastically deformable at least in sections.
  • the design is designed such that from the rearward pivoted position by applying additional remindlehn proposedn beyond the pivoted backward position beyond pivoting of the backrest support and / or backrest frame is made possible by elastic deformation.
  • a pivoting range of the chair can be extended, in particular by about one third. For example, starting from an inclination of 21 ° in the rearwardly pivoted position when applying additionalêtlehnkraft the total pivoting can be increased to about 28 °.
  • the trained as a force storage element armrest carrier pivots also with it.
  • the armrest carrier is coupled with one end to the seat support - with another end
  • the armrest carrier is coupled with the backrest support.
  • the coupling is rotationally fixed at a first end and rotatably provided at a second end.
  • the armrest carrier is first rotatably coupled to the seat support at the second end with the backrest support and subsequently at the first end, in particular by applying a bias voltage. In this way, a simple assembly is possible.
  • Fig. 1A shows a schematic sketch of the kinematics of a chair in an upright position.
  • the chair 1 wiest a schematically illustrated seat support 2 and a schematically illustrated backrest support 3, which are coupled via a translation 5.
  • the translation 5 determines a movement of the seat support 2 and the backrest support 3 in a pivoting from the upright position shown here in a pivoted backward position.
  • the seat support 2 and the backrest support 3 are coupled via a trained as a force storage element armrest support 4.
  • the armrest support 4 is designed and arranged such that it allows the predetermined by the translation sequence of movement of the seat support 2 and the backrest support 3.
  • the armrest support provides a force returning to the upright position.
  • the force returning to the upright position is provided throughout the movement.
  • the armrest carrier is stretched with increasing pivoting to the rear.
  • a bias voltage of the armrest carrier 4 may be provided, so that a restoring force is applied even in the upright position.
  • a stop not shown here, is provided in this case, on which the bias is supported in the upright position.
  • Fig. 1B shows the sketch of the kinematics of a chair according to Fig. 1A in a pivoted backward position.
  • the armrest carrier 4 formed as a force storage element In the pivoted to the rear position of the armrest carrier 4 formed as a force storage element is elastically deformed or stretched and thus stores an applied in the rear pivoting and clamping work or energy. This causes in a state free of external forces, in particular without recline, a force returning to the upright position.
  • the translation 5 is coupled to a seat base 8.
  • a first pivot point 9 and a second pivot point 10 of the transmission 5 are fixedly arranged on the seat base.
  • a firmly arranged on the seat support 2 third pivot point 11 and another fixed to the seat support 2 fourth pivot point 12 are provided.
  • the first pivot point 9 is coupled to the fourth pivot point 12 via a first link 13, which is fixedly connected to the backrest support 3 or formed integrally therewith.
  • the first link 13 thus represents kinematically a part or an extension of the backrest support 3.
  • a second link 14 couples the second pivot 10 to the third pivot point 11.
  • the first link 13, the seat base 8, the second link 14 and the seat carrier 2 thus jointly close a kinematic quadrangle with the first to fourth pivot points 9 to 12 as corners.
  • the first link 13 and the second link 14 are in both the upright position according to FIG Fig. 1A as well as in the rearward pivoted position according to Fig. 1B inclined in a same direction, which represents a direction away from the backrest support 3 direction.
  • the second link 14 is always slightly more inclined than the first link 13.
  • a tilt to the vertical in the upright position is greater in each case than in the pivoted backwards Position.
  • the third and fourth pivot point 11, 12 and thus the seat support 2 lift in the rear pivoting.
  • the fourth pivot point 12 is arranged in a rear region 18 of the seat carrier 2 and the third pivot point 11 in a front region 17 of the seat carrier 2. Furthermore, the second link 14 is formed longer than the first link 13 in addition to its greater inclination. Therefore, in the rearward pivoting, the front portion 17 of the seat carrier 2 rises more than the rear portion 18, so that the seat carrier is pivoted.
  • Fig. 2 shows a schematic sketch of the kinematics of a chair according to another embodiment.
  • a seat base 8 is symbolized here only at the first and second fulcrum 9, 10 marked fixed bearings.
  • Fig. 2 different from Fig. 1A and B, inter alia, by the fact that the armrest carrier 4 embodied as a force storage element is non-rotatably coupled to the seat support 2 at a first end 6 and is rotatably coupled to the backrest support 3 at a second end 7. Accordingly, here a fifth pivot point 19 is provided, via which the armrest carrier 4 is rotatably coupled to the backrest support 3.
  • the fifth pivot point 19 or the coupling of the armrest support 4 with the backrest support 3 via this advantageously allows a mixture of tensile or compressive and bending stress of the armrest support 4 in a backward pivoting.
  • the pivoting changes a distance of the fifth pivot point 19 from the rotationally fixed to the seat support second coupled first end 6, so that a tensile or compressive force is applied.
  • the fifth pivot point 19 is displaced relative to the first end such that a force component is added transversely to the pure tensile or compressive load and the armrest carrier is thus loaded with a bending force, which on the rotationally fixed to the seat support. 2 coupled first end 6 causes a bending moment.
  • the predetermined movement of the translation 5 depends in particular on the arrangement of the pivot points 9, 10, 11, 12 from.
  • a distance between the second pivot point 10 and the third pivot point 11, which is formed by the second link 14, approximately the same size as a distance between the fourth pivot point 12 and the third pivot point 11, which is formed by the seat support 2 is.
  • a distance between the first pivot point 9 and the fourth pivot point 12, which is formed by the first link 13, is significantly smaller, and in particular is only a fraction of it.
  • a distance between the first pivot point 9 and the second pivot point 10, which is formed by the seat base 8, lies between these distances.
  • An angle between a transverse element of the backrest support 3 and the first link 13 is fixed and is preferably between 90 and 180 °, in this example between 125 ° and 130 °. In this way, the side facing away from the backrest support 3 inclination of the first link 13 is achieved.
  • Fig. 3A shows a side view of a chair in an upright position.
  • the chair 1 is here exemplified in the form of a conference swivel chair, which kinematics according to Fig. 2 having.
  • the chair 1 has a seat surface 20, which is formed with a seat cushion 2 mounted on the seat support 2. Further, a backrest 22 is provided which is formed with a backrest frame 16 attached to the backrest support 3 and a backrest cushion 23 attached thereto.
  • the seat base 8 is here coupled to a height-adjustable compression spring portion 25, which is mounted on a roller-free base 24, which is designed as a swivel base.
  • an armrest 26 is provided which is formed with the armrest support 4 and an armrest pad 27 attached thereto.
  • the armrest support 4 is made entirely of glass fiber reinforced polyamide and formed with a curved shape which encloses an angle of about 290 °.
  • the armrest support 4 With its first end 6 of the armrest support 4 is screwed against rotation on the underside of the seat support 2.
  • the second end 7 of the armrest support 4 is rotatably mounted on the backrest support 3, for example by means of a bearing pin.
  • the individual elements of the transmission 5 are partially concealed here as well, in particular the second and third pivot points 10, 11.
  • the first link 13, which is partially formed integrally with the backrest support 3, and the second link 14 are clearly visible from the outside.
  • Fig. 3B shows a side view of the chair according to Fig. 3A in a pivoted backward position.
  • the backrest 22 is here pivoted visibly backwards. By way of example, this is a pivoting angle in relation to the upright position of 21 °. To the same extent, the first link 13 is pivoted together with the backrest support 3. Due to the inclination of the first link 13 and the seat carrier 2 and the second link 14 is pivoted, but to a much lesser extent than the first link 13th
  • Both links 13 and 14 are in both the upright position according to Fig. 3A So in the backward pivoting position according to Fig. 3B tilted forward so that a weight of a person sitting on the chair causes a restoring moment and designed as a force storage element armrest support 4 thus only has to work against the backrest force.
  • the seat 20 is slightly raised overall and additionally also pivoted, but in comparison to the backrest 22 to a much lesser extent.
  • this is a pivoting angle of 7 °.
  • the armrest carrier 4 is loaded in the illustrated tensioned state both pressure and bending and thus elastically compressed and bent.
  • the pivoted to the rear position is achieved by a person sitting on the chair 1 person leaning backwards and thus applies a reclining force on the backrest 22, which overcomes a spring force of the armrest support 4.
  • the backrest 22 may be opposite the in Fig. 3B shown pivoted backward position by elastic deformation of the backrest support 3 and the backrest frame 16 are further pivoted to the rear, for example, about another 7 °. A total possible swivel angle is thus about 28 °.
  • Fig. 4 shows a longitudinal sectional view of a chair.
  • FIGS. 3A and B This is in contrast to the embodiment according to FIGS. 3A and B to an office swivel chair, which is in particular the different design of the base 24 'with rollers 28 and its much higher connection to the compression spring portion 25 is to make out.
  • the office swivel chair is according to Fig. 4 essentially the same as the conference swivel chair FIGS. 3A and 3B educated.
  • the office swivel chair is shown here in the upright position. Pivoting in the rearwardly pivoted position is the same as with respect to Fig. 3B described possible.
  • the stop 15 is arranged and designed in such a way that upon reaching the stop 15, a pretension of the armrest carrier 4 holding the backrest support 3 and the seat support 2 in the upright position is still present. In this way, a defined position of the translation 5, the seat support 2 and the backrest support 3 is guaranteed even in the upright position.
  • Fig. 5 shows a schematic sketch of a kinematics of a chair according to yet another embodiment.
  • the armrest support 4 need not be formed as shown. It would also be conceivable, for example, to design the armrest carrier kinematically as a pure tension spring and / or to attach an armrest body projecting therefrom, for example, from it. In this case, if necessary, both ends of the armrest support 4 could be rotatably coupled to the backrest support 3 and the seat support 2, respectively.
  • the chair not as a swivel chair but as a 3 or 4-legged chair form.
  • the seat base 8 would be provided with corresponding chair legs.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
EP17180500.5A 2016-09-14 2017-07-10 Chaise, en particulier chaise de bureau ou de conférence, procédé de fabrication d'une chaise Active EP3295829B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016217503.3A DE102016217503A1 (de) 2016-09-14 2016-09-14 Stuhl, insbesondere Konferenz- oder Bürostuhl, Verfahren zur Herstellung eines Stuhls

Publications (2)

Publication Number Publication Date
EP3295829A1 true EP3295829A1 (fr) 2018-03-21
EP3295829B1 EP3295829B1 (fr) 2019-05-01

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EP17180500.5A Active EP3295829B1 (fr) 2016-09-14 2017-07-10 Chaise, en particulier chaise de bureau ou de conférence, procédé de fabrication d'une chaise

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EP (1) EP3295829B1 (fr)
DE (1) DE102016217503A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019234223A1 (fr) * 2018-06-08 2019-12-12 Armin Sander Siège

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017209041A1 (de) 2017-05-30 2018-12-06 Sedus Stoll Ag Stuhl, insbesondere Konferenz- oder Bürostuhl sowie Verfahren zur Herstellung eines Stuhls
EP3622860A1 (fr) 2018-09-17 2020-03-18 Sedus Stoll AG Chaise pivotante, en particulier chaise de conférence ou de bureau
US10820703B2 (en) 2018-09-17 2020-11-03 Sedus Stoll Ag Chair, particularly conference or office chair, and method for manufacturing a chair
DE102020110707A1 (de) * 2020-04-20 2021-10-21 Bock 1 Gmbh & Co. Kg Sitzmöbel
DE102021126162A1 (de) 2021-10-08 2023-04-13 Bock 1 Gmbh & Co. Kg Mechanik für ein Sitzmöbel, insbesondere für einen Bürostuhl

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131315A (en) * 1977-04-16 1978-12-26 Firma Drabert Sohne Chair with deformable armrest
DE3447376A1 (de) * 1984-12-24 1986-07-03 Mario 7070 Schwäbisch Gmünd Vivaldi Moebel-traggestell
US4971394A (en) * 1984-09-24 1990-11-20 Telescope Casual Furniture Company Swivel rocker chair
US20020149247A1 (en) 1999-04-09 2002-10-17 Niels Diffrient Ergonomic chair
US20090236890A1 (en) * 2006-08-30 2009-09-24 Itoki Corporation Chair
US20150245714A1 (en) * 2012-10-18 2015-09-03 Vitra Patente Ag Seat With Relative Synchronous Displacement Between Back Incline And Seat Incline
EP2996326A1 (fr) 2014-09-15 2016-03-16 LG Electronics Inc. Terminal mobile et son procédé de commande

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131315A (en) * 1977-04-16 1978-12-26 Firma Drabert Sohne Chair with deformable armrest
US4971394A (en) * 1984-09-24 1990-11-20 Telescope Casual Furniture Company Swivel rocker chair
DE3447376A1 (de) * 1984-12-24 1986-07-03 Mario 7070 Schwäbisch Gmünd Vivaldi Moebel-traggestell
US20020149247A1 (en) 1999-04-09 2002-10-17 Niels Diffrient Ergonomic chair
US20090236890A1 (en) * 2006-08-30 2009-09-24 Itoki Corporation Chair
US20150245714A1 (en) * 2012-10-18 2015-09-03 Vitra Patente Ag Seat With Relative Synchronous Displacement Between Back Incline And Seat Incline
EP2996326A1 (fr) 2014-09-15 2016-03-16 LG Electronics Inc. Terminal mobile et son procédé de commande

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019234223A1 (fr) * 2018-06-08 2019-12-12 Armin Sander Siège

Also Published As

Publication number Publication date
DE102016217503A1 (de) 2018-03-15
EP3295829B1 (fr) 2019-05-01

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