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EP2000056A1 - Dossier flexible pour un siège de travail - Google Patents

Dossier flexible pour un siège de travail Download PDF

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Publication number
EP2000056A1
EP2000056A1 EP08010083A EP08010083A EP2000056A1 EP 2000056 A1 EP2000056 A1 EP 2000056A1 EP 08010083 A EP08010083 A EP 08010083A EP 08010083 A EP08010083 A EP 08010083A EP 2000056 A1 EP2000056 A1 EP 2000056A1
Authority
EP
European Patent Office
Prior art keywords
spring
backrest
flexible
longitudinal
region
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.)
Withdrawn
Application number
EP08010083A
Other languages
German (de)
English (en)
Inventor
Joachim Steinmann
Josef Navratil
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.)
Kloeber GmbH and Co
Original Assignee
Kloeber GmbH and Co
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 Kloeber GmbH and Co filed Critical Kloeber GmbH and Co
Publication of EP2000056A1 publication Critical patent/EP2000056A1/fr
Withdrawn legal-status Critical Current

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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—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/46—Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • A47C7/462—Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means
    • 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—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/44—Supports for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/445—Supports for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs
    • 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—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/405—Supports for the head or the back for the back with double backrests

Definitions

  • the invention relates to a flexible backrest for a work chair according to the preamble of claim 1.
  • the US 2006/0181126 A1 also describes a flexible backrest, are installed in the horizontal slats, which may also be bendable. Even with these flexible blades, however, it is not possible to counteract an undesirable tilting back of the iliac crest when changing the sitting posture.
  • the invention is therefore the object of developing a flexible backrest for a work chair of the type mentioned so that a non-physiological sitting posture is prevented in forming a round back and associated with rearward tilting of the iliac crest.
  • the invention is characterized by the technical teaching of claim 1.
  • An essential feature of the invention is that at least one longitudinally extending longitudinal spiral spring is arranged in the region of the backrest, which is pivotably articulated to a backrest support via an associated linkage system.
  • the longitudinal torsion springs are supported by a handlebar system, there is the further essential feature that it is now possible due to the formation of the handlebar system to counteract Nachhintenkippen the iliac crest by the handlebar system is designed so that in a tilting back iliac crest the Longitudinal spring creates a strong back pressure against the iliac crest so that the user feels the backrest against the back tilting iliac crest is created a strong back pressure and he is taught that this posture is unphysiological and undesirable.
  • the link system consists of three articulation points on the longitudinal spiral spring, wherein the three articulation points define a total of four separate sections of the longitudinal bending spring.
  • the link system consists of an upper wishbone, the link arms are rotatably connected to each other and whose base is formed as a pivot bearing, which is arranged at the free front end of a leaf spring.
  • the invention is not limited to the formation of a leaf spring.
  • a leaf spring all other power storage can be used, such.
  • elastomeric springs gas springs, coil springs, torsion springs, coil springs and the like.
  • the wishbone is rigid and that the pivot bearing is located in the region of the bendable end of the leaf spring in order to avoid a too rigid seat impression in the area of the thoracic spine.
  • the longitudinal bending spring in the direction of the backrest support is resilient, so that the posture is maintained upright and does not push the thoracic spine forward and is tilted.
  • the longitudinal bending spring therefore pivots in the direction of the backrest support, namely in the upper area of the wishbone at the same time. This presses the upper portion of the longitudinal spring in the neck area and upper thoracic area against the upper neck area and thoracic area. This creates a supporting effect in the shoulder area.
  • the longitudinal bending spring first of all adapts to the human spinal column in an absolutely positive manner and exerts a uniform contact force on the spinal column over the entire back and pelvic area.
  • the user may find this uncomfortable and then directs his pelvis back into the physiologically correct posture, namely tilts the iliac crest area forward, so as to avoid the rounded back.
  • the flexible backrest is completely independent of the mechanics of the work chair. Therefore, it may be provided that the flexible backrest is combined with a synchronous mechanism or the synchronizing mechanism is eliminated.
  • the flexible backrest can also be installed in rigid conference chairs, without departing from the spirit of the invention.
  • FIGS. 1 to 5 is generally a backrest support 1 shown, which may be formed either as a straight or curved plate. Of course, the invention also provides that the backrest support 1 is partially bendable or divided into bending sections.
  • the backrest support 1 is connected at its lower portion with a mounting plate 33 to which either a seat is attached or which is usually articulated directly to a synchronizing mechanism.
  • the longitudinal torsion springs 2, 3 are thus formed bendable over its entire length and have a high mechanical resilience.
  • the later to be described handlebar system 10 thus divides each longitudinal spiral spring 2, 3 in different sections.
  • the seat surface 5 extends below the longitudinal bending springs 2, 3, so as to allow a physiologically acceptable conditioning of the human spine to the shape of the longitudinal bending spring 2, 3.
  • the lower section 8, 9 is slightly more curved than the upper sections 6, 7.
  • the longitudinal bending springs 2, 3 deform in physiologically perfect sitting position only a little and adapt to the double-S shape of the spine in an ideal manner, because just the longitudinal bending springs 2, 3 are divided into the aforementioned sections 6 to 9.
  • the handlebar system 10 consists of an upper wishbone 11, wherein the two mutually angled handlebar levers 12, 17 are rigidly connected together and are summarized here in a pivot bearing 16, which is arranged at the front bendable end of a leaf spring 15.
  • the leaf spring 15 is arranged with its other side on the rigid backrest support 1.
  • said pivot bearing 13 is preferably also designed as a sliding bearing, which is displaceable in the arrow directions 14 in the vertical direction.
  • this pivot bearing as sliding bearing with possibility of movement in the direction of arrows 14 ensures a shoulder blade system, which ensures that the upper portion 6 (neck area) is deformed and this adapts to the shoulder area.
  • the lower link lever 17 is in this case held in a lower pivot bearing 18 at the rear of the longitudinal torsion springs 2, 3.
  • This pivot bearing 18 defines in connection with the upper pivot bearing 13, the section 7th
  • a further link lever 19 is arranged, which is inclined obliquely in the region of a downwardly directed slope 23 against the surface of the longitudinal spring 2 and wherein this link lever 19 received in a pivot bearing 20 at the back of the respective longitudinal spiral spring 2, 3 is, while the opposite, stationary pivot bearing 21 is arranged in the region of a holding block 22 of the backrest support 1.
  • the holding block 22 can be omitted and the pivot bearing 21 can be integrated directly on the backrest support 1.
  • the rotary bearing 20 defines, in the direction of the lower region of the longitudinally extending springs 2, 3 exposed there, the section 9 which is associated with the iliac crest region.
  • the longitudinal bending spring was approximately convex in this area, and it now turns into a concave position so as to produce a corresponding counter-supporting effect on the backward tilting iliac crest of the user. This envelope movement is perceived as unpleasant, and the user then knows that he has taken a non-physiological posture.
  • the invention is not limited to the fact that the previously formed in this area convex portion 9 of the longitudinal bending springs is transformed into a concave portion. It is enough in this area a very generate strong back pressure, which is done by means of the downward link lever 19.
  • the handlebar lever 19 may be provided, moreover, that the housing-fixed pivot bearing 21 is adjustable or adjustable in the direction of arrows 24.
  • FIG. 2 shows the parallel arrangement of the longitudinal bending springs 2, 3 with the aforementioned sections.
  • FIGS. 3 to 5 now show the integration of said longitudinal bending springs 2, 3 in a cushion support 25, wherein the longitudinal bending springs 2, 3 are material integral with the material of the cushion support 25.
  • the cushion support 25 therefore consists of a plastic body, which is bordered by a peripheral side edge 31 delimited and forms an inner support surface 34, which is formed essentially by external and parallel to each other arranged plastic springs 30.
  • the plastic springs 30 are bendable plastic sections, between which there is air and which are connected to a central region. The connection takes place here in the region of the vertical longitudinal spiral springs 2, 3 arranged parallel to one another, which therefore also form part of the support surface 34.
  • the longitudinal torsion springs 2, 3 are formed of the same material as the plastic springs 30 and also form an integral plastic component with the other portions of the cushion support 25.
  • the cushion support 25 has a continuous sheet-like plastic cross-section in the upper region, in which a holder 26 is integrated, which receives the upper pivot bearing 13 on its rear side.
  • This holder 26 is followed by an approximately over the width of the cushion support 25 extending bending slot 27, which thus forms an upper bendable portion 6 (associated with the neck region).
  • a central, central longitudinal recess 32 connects, which is bounded laterally by the two longitudinal spiral springs 2, 3.
  • the two longitudinal torsion springs 2, 3 are connected in the region of this longitudinal recess 32 by flexible connecting webs 28, which consist of the same material as the plastic material of the cushion support 25 as a whole.
  • the plastic springs 30 are located in the region of recesses 29, which are introduced into the material of the cushion support 25.
  • a total of the cushion support 25 consists of such a pliable material, which are arranged in the back region of such a cushion support the previously described longitudinal bending springs 2, 3 and work through this limp cushion support therethrough.
  • plastic springs 30 can be omitted, which only a certain back pressure for the cushioning material (not shown in the drawing) should offer.
  • the plastic springs can also be replaced by other elements or completely eliminated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP08010083A 2007-06-06 2008-06-03 Dossier flexible pour un siège de travail Withdrawn EP2000056A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007026327A DE102007026327A1 (de) 2007-06-06 2007-06-06 Flexible Rückenlehne für einen Arbeitsstuhl

Publications (1)

Publication Number Publication Date
EP2000056A1 true EP2000056A1 (fr) 2008-12-10

Family

ID=39767014

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08010083A Withdrawn EP2000056A1 (fr) 2007-06-06 2008-06-03 Dossier flexible pour un siège de travail

Country Status (3)

Country Link
EP (1) EP2000056A1 (fr)
JP (1) JP2008302229A (fr)
DE (1) DE102007026327A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103826915A (zh) * 2011-09-30 2014-05-28 西德科汽车座椅技术有限责任公司 带有由自动反应式的支架结构构成的侧部的车辆座椅
CN107788736A (zh) * 2016-09-06 2018-03-13 泰桦家具股份有限公司 可调式椅背装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103906655B (zh) * 2011-09-12 2018-05-15 佛吉亚汽车座椅有限责任公司 用于车辆座椅的可控舒适壳体
DE102016117564B4 (de) * 2016-09-19 2020-01-16 Isringhausen Gmbh & Co. Kg Rückenlehne für einen Sitz, insbesondere für einen Fahrzeugsitz
WO2021178206A1 (fr) 2020-03-02 2021-09-10 Steelcase Inc. Ensemble de support de corps et ses procédés d'utilisation et d'assemblage
US11812870B2 (en) 2021-02-10 2023-11-14 Steelcase Inc. Body support structure

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002243A1 (fr) * 1984-10-12 1986-04-24 Ekkehard Anderle Siege avec partie de dossier dynamique
DE19930922A1 (de) * 1998-07-09 2000-05-04 Okamura Corp Stuhl
JP2004105676A (ja) * 2002-09-18 2004-04-08 Atsuo Yoshida 弾性体と支点による荷重分配方法による回転背当て。
DE102004012850A1 (de) * 2003-10-01 2005-05-04 Leopold Schlosser Adaptive Lehne für einen Stuhl oder dergleichen
US20050275263A1 (en) * 2004-06-10 2005-12-15 Norman Christopher J Back construction with flexible lumbar
EP1619072A2 (fr) 2004-07-06 2006-01-25 Volker Wilhelm Eysing Dossier
US20060181126A1 (en) 2005-02-16 2006-08-17 Eysing Volker W Support element
EP1911374A1 (fr) * 2006-10-10 2008-04-16 Provenda Marketing AG Siège avec dossier ergonomique
DE202006016045U1 (de) * 2006-10-17 2008-05-08 Sander, Armin Sitzmöbel, insbesondere Bürostuhl

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4121768C1 (en) * 1991-07-02 1992-10-08 Grammer Ag, 8450 Amberg, De Car seat backrest cushion - has support plate with adjustable curvature set by stays fastened to baseplate
DE102005054125B3 (de) * 2005-11-14 2007-05-16 Grammer Ag Personensitz mit zwischen Vorder- und Rückwand angeordneten Streben

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002243A1 (fr) * 1984-10-12 1986-04-24 Ekkehard Anderle Siege avec partie de dossier dynamique
DE19930922A1 (de) * 1998-07-09 2000-05-04 Okamura Corp Stuhl
JP2004105676A (ja) * 2002-09-18 2004-04-08 Atsuo Yoshida 弾性体と支点による荷重分配方法による回転背当て。
DE102004012850A1 (de) * 2003-10-01 2005-05-04 Leopold Schlosser Adaptive Lehne für einen Stuhl oder dergleichen
US20050275263A1 (en) * 2004-06-10 2005-12-15 Norman Christopher J Back construction with flexible lumbar
EP1619072A2 (fr) 2004-07-06 2006-01-25 Volker Wilhelm Eysing Dossier
DE102004032765A1 (de) 2004-07-06 2006-03-23 Volker Wilhelm Eysing Bürostuhl mit flexibler Lehne
US20060181126A1 (en) 2005-02-16 2006-08-17 Eysing Volker W Support element
EP1911374A1 (fr) * 2006-10-10 2008-04-16 Provenda Marketing AG Siège avec dossier ergonomique
DE202006016045U1 (de) * 2006-10-17 2008-05-08 Sander, Armin Sitzmöbel, insbesondere Bürostuhl

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103826915A (zh) * 2011-09-30 2014-05-28 西德科汽车座椅技术有限责任公司 带有由自动反应式的支架结构构成的侧部的车辆座椅
CN103826915B (zh) * 2011-09-30 2017-11-07 西德科汽车座椅技术有限责任公司 带有由自动反应式的支架结构构成的侧部的车辆座椅
CN107788736A (zh) * 2016-09-06 2018-03-13 泰桦家具股份有限公司 可调式椅背装置

Also Published As

Publication number Publication date
JP2008302229A (ja) 2008-12-18
DE102007026327A1 (de) 2008-12-11

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