EP0406707A1 - Chaise de travail avec siège et dossier - Google Patents

Chaise de travail avec siège et dossier Download PDF

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Publication number
EP0406707A1
EP0406707A1 EP90112384A EP90112384A EP0406707A1 EP 0406707 A1 EP0406707 A1 EP 0406707A1 EP 90112384 A EP90112384 A EP 90112384A EP 90112384 A EP90112384 A EP 90112384A EP 0406707 A1 EP0406707 A1 EP 0406707A1
Authority
EP
European Patent Office
Prior art keywords
seat
backrest
support
joint
seat support
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
EP90112384A
Other languages
German (de)
English (en)
Other versions
EP0406707B1 (fr
Inventor
Heinz-Peter Wilhelm Suhr
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.)
Koenig and Neurath AG
Original Assignee
Koenig and Neurath 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 Koenig and Neurath AG filed Critical Koenig and Neurath AG
Priority to AT90112384T priority Critical patent/ATE83627T1/de
Publication of EP0406707A1 publication Critical patent/EP0406707A1/fr
Application granted granted Critical
Publication of EP0406707B1 publication Critical patent/EP0406707B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means 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
    • 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
    • A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
    • 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
    • A47C1/031—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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs

Definitions

  • the invention relates to a work chair, in particular office chair according to the preamble of the main claim.
  • a piece of seating furniture is known in which the substructure forming the chair frame is in the form of a frame-like frame.
  • the frame-like backrest support is articulated as a one-armed lever to the rear upper corner of the frame and in turn is articulated to the frame-like seat support, which therefore requires a sliding bearing at its end remote from the backrest, as is the case with chairs according to DE-A 33-22 450 and DE-U-84 01 000 is the case.
  • the seating furniture according to the EA-0 049 310 requires an arched, bendable connection between the seat and backrest, ie an elastic intermediate member, which is able to absorb the bending deformations when the inclination changes between the seat surface and the backrest, that is, articulated connections in the region of the gusset between the backrest and the seat surface are not possible here.
  • the seat and backrest supports are also coupled to one another, but in contrast to the chair according to US-A-34 89 459 the self-displaceable coupling point between the supports is below the area of the highest Seat load is and an additional lever arm must be provided on the backrest support for the approach of the clamping element.
  • Adjustment elements for the pressure element (s) are, as it were, attached to the inside of the entire adjusting mechanism, and the same also applies to the position lock of the seat and backrest position.
  • the invention is therefore based on the object, starting from a seat of the type mentioned, to improve it so that there is a minimal horizontal displacement when the backrest is lowered, the displaceable coupling located under the front edge area of the seat between the seat and seat support, with the further stipulation, the whole adjustment mechanism on the one hand so compact and on the other hand with regard to its individual components, namely tensioning and locking elements as clear and therefore easy to install, but also as efficient as possible, and to do with as few articulation points for these elements.
  • the horizontal displacement of the seat resulting from this design according to the invention is minimal and is a maximum of only 3 to 5 mm, i.e. this is significantly reduced compared to the horizontal displacement of the seat according to US-A 34 89 459.
  • Both the tensioning element and the position lock are coupled to a common location, namely the swivel joint between the seat and backrest support, but are oriented in different directions, i.e. the tensioning element extends at an acute angle to the bent part of the backrest support, when it is lowered the effective lever arm for the tensioning element increases, while the locking element advantageously maintains its vertical direction of action on the seat even when it is lowered substantially.
  • Even more favorable is the design of the tensioning element in the form of a leaf spring or a leaf spring assembly, which extends in the direction of the bent part of the backrest support and is placed against an abutment on the seat support, which will be explained in more detail.
  • the compact, i.e. space-saving and design-friendly summarization of the entire adjustment mechanism is ultimately due to the fact that the seat with its rear edge area and the tensioning element and the lock are only bent at one point, namely on the swivel joint that is movable with respect to the seat support Part of the backrest support are coupled together, which does not have to accommodate any sliding movements, since the seat at its front edge, i.e. where the load is least noticeable and the slight sliding movement occurs when the chair user moves after releasing the lock and tilting the backrest want to lean back.
  • the clamping element is advantageously arranged in the form of two parallel compression springs on the seat support, between whose articulation points on the joint designed as an axis, the adjustment lock that can be locked against the seat support is arranged.
  • One compression spring is advantageously designed with greater spring force than the other, which is provided with an adjusting element at the end on the carrier side. With such a design, the forces to be applied for the adjustment are correspondingly reduced.
  • the seat is supported there with a profile that is open towards the backrest on a cross strut that is arranged on the seat support and has a cross-section that is smaller in cross-section in relation to the profile cross section, that is, the seat advantageously only needs to be pushed on in this area and not stored in a suitable sliding bearing to be while the other articulation point of the seat to the backrest support is easy to assemble simply plugged onto a cross strut on the seat support from above and then closed.
  • this actuator which can be rotated on the seat support and is adjustable with respect to the seat support, with which the tensioning force of the tensioning element can be adjusted
  • this actuator is on the one hand pivotable on the stationary joint of the seat support and, on the other hand, adjustable on the seat support by means of an adjusting screw engaging in a pivot pin, wherein the stationary joint, the pivot pin and the articulation point of the tensioning element on the actuator are arranged in a triangular structure.
  • This actuator is located on the seat support in the area of the front edge of the seat, so that the chair user can easily make the adjustment from there.
  • the tensioning element can also be designed in the form of a leaf spring or a leaf spring package, which which is firmly connected to the bent part at one end and placed at the other end against an abutment of the seat support, the abutment being advantageously adjustable with respect to the seat support.
  • a tensioning element is preferably formed from fiber-reinforced, commercially available plastic, which material has the advantage over metallic spring elements that it does not break, but can at most be softened by individual fiber breaks occurring when overstressed.
  • the work chair consists of seat 2 and backrest 3, both of which are mounted on a seat support 1 in the same direction, depending on one another and pivotable relative to one another, the seat 2 being displaceably connected to the seat support 1 in the region of its front edge 2 and on the seat support 1 a seat 2 and backrest 3 acting in the rest position, elastic clamping element 4 is arranged.
  • the support 5 of the backrest 3 is bent at the height of the seat 2 and with the end of its bent part 5 'under the seat on the seat support 1 pivoted in a joint and the seat 2 with its rear edge region 2' with a swivel joint 8 between the joint 6 of the carrier 5 and its kink 7 with the kinked part 5 'fixed but rotatably connected.
  • the tensioning element 4 which is in the form of at least one spring 4 'and extends at an acute angle to the bent part 5', is arranged on this and the seat support 1, clamped.
  • the seat and backrest adjustment lock 9, oriented essentially vertically against the seat 2, is also clamped between the swivel joint 8 and the seat support 1, which is equipped with a locking pin 17 attached to it for engagement in the lock 9.
  • a further description of this lock 9 is not required insofar as the most varied lock designs can be provided for this.
  • this design results in an extremely small horizontal displacement of the seat surface, a direct action of the tensioning element 4 on the joint 8 of the seat 2 and backrest support 5, a locking direction of action oriented practically perpendicular to the seat surface, and also the least possible loading of the movable coupling point between the front edge 2 'and the cross strut 12 carrying this and finally the effective lever arm, with which the tensioning element acts on the swivel joint 8 is increasingly larger when the backrest is adjusted.
  • the clamping element 4 is expediently in the form of two parallel compression springs 4 ', 4calledsformen in the embodiments according to FIGS. 1 to 3, between the articulation points on the pivot 8 formed as an axis 8', the lockable against the seat support 1 locking device 9 is arranged.
  • This is shown in principle in Fig. 3.
  • Fig. 5 is advantageously a compression spring 4 ', designed with greater spring force than the other 4 ⁇ , which is provided at the carrier end with an adjusting element 10.
  • This adjustment element is illustrated in FIG. 4, according to which the actuator 10 is arranged on the one hand pivotably also on the stationary joint 6 of the seat support 1 and on the other hand is fixedly arranged on the seat support 1 by means of an adjusting screw 14 engaging in a pivot pin 13.
  • the hinge 6, the hinge pin 13 and the articulation point 15 of the clamping element 4 on the actuator 10 are arranged in a triangular arrangement. Both the pivot pin 13 and the seat support 1 have thread for the set screw 14, whereby the triangular actuator 10 pivots when the set screw is actuated about the axis 6 and thus adjusts the coupling point 15 for the compression spring 4 'with respect to the joint 8.
  • the seat 2 In view of the slight, but inevitable at backrest adjustment horizontal adjustment of the seat, which rotates with slight but intentional rotation about the cross strut 12, the seat 2 is in the area below its front edge 2 'with an open to the backrest 3 profile 11 (see in particular Fig. 4) on the arranged on the seat support 1, in relation to the profile cross-section smaller cross strut 12 only pushed, which facilitates the assembly of such a chair, since the seat after being pushed onto the cross strut 12 only with its downwardly open connection bearing 19 placed on the axis or the joint 8 and must be rotatably fixed with a closure piece 20.
  • the embodiment of the work chair according to FIG. 6 corresponds to the above-described embodiment except for the tensioning element.
  • the clamping element 4 which conveys the elasticity of the seat 2 and the backrest 3 when the lock 9 is unlocked, but is designed in the form of a leaf spring or a leaf spring assembly 4 ′′′, which is connected to the end with a bent part 5 ' and is applied with the other end to a simple abutment 16 of the seat support 1.
  • This abutment 16 is arranged on the seat support 1 according to the same principle as described for FIG. 4.
  • the mode of operation of such a leaf spring or of such a leaf spring assembly does not require any special explanation, since this is readily apparent from FIG. 6, but from which it is clear that such a tensioning element configuration takes up even less space in the area of the seat support 1 under the seat.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP90112384A 1989-07-01 1990-06-29 Chaise de travail avec siège et dossier Expired - Lifetime EP0406707B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90112384T ATE83627T1 (de) 1989-07-01 1990-06-29 Arbeitsstuhl mit sitz und rueckenlehne.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3921755A DE3921755A1 (de) 1989-07-01 1989-07-01 Arbeitsstuhl mit sitz und rueckenlehne
DE3921755 1989-07-01

Publications (2)

Publication Number Publication Date
EP0406707A1 true EP0406707A1 (fr) 1991-01-09
EP0406707B1 EP0406707B1 (fr) 1992-12-23

Family

ID=6384147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112384A Expired - Lifetime EP0406707B1 (fr) 1989-07-01 1990-06-29 Chaise de travail avec siège et dossier

Country Status (5)

Country Link
EP (1) EP0406707B1 (fr)
AT (1) ATE83627T1 (fr)
DE (2) DE3921755A1 (fr)
ES (1) ES2037511T3 (fr)
GR (1) GR3006658T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993017602A1 (fr) * 1992-03-10 1993-09-16 Ashfield Engineering Company (Wexford) Limited Mecanisme d'inclinaison pour chaise
EP1342432A3 (fr) * 2002-03-05 2004-01-28 Eckhard Dipl.-Ing. Hansen Chaise
WO2008091178A1 (fr) * 2007-01-23 2008-07-31 Kirill Vladimirovich Matveev Chaise et variantes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020110707A1 (de) 2020-04-20 2021-10-21 Bock 1 Gmbh & Co. Kg Sitzmöbel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2859799A (en) * 1956-05-03 1958-11-11 Edwin R Moore Functional posture controller for chairs
DE8617736U1 (de) * 1986-07-03 1987-09-24 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Stuhl, insbesondere Bürostuhl
DE3800751A1 (de) * 1987-01-19 1988-08-04 Okamura Corp Sessel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537203A1 (de) * 1984-10-24 1986-04-24 Klöber GmbH & Co, 7770 Überlingen Arbeitsstuhl mit neigungsmechanik von sitzschale und rueckenlehne
DE8906296U1 (de) * 1989-05-20 1989-07-27 Röder GmbH Sitzmöbelwerke, 6000 Frankfurt Stuhl, insbesondere Arbeits- oder Bürostuhl

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2859799A (en) * 1956-05-03 1958-11-11 Edwin R Moore Functional posture controller for chairs
DE8617736U1 (de) * 1986-07-03 1987-09-24 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Stuhl, insbesondere Bürostuhl
DE3800751A1 (de) * 1987-01-19 1988-08-04 Okamura Corp Sessel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993017602A1 (fr) * 1992-03-10 1993-09-16 Ashfield Engineering Company (Wexford) Limited Mecanisme d'inclinaison pour chaise
EP1342432A3 (fr) * 2002-03-05 2004-01-28 Eckhard Dipl.-Ing. Hansen Chaise
WO2008091178A1 (fr) * 2007-01-23 2008-07-31 Kirill Vladimirovich Matveev Chaise et variantes
US8118366B2 (en) 2007-01-23 2012-02-21 Kirill Vladimirovich MATVEEV Chair (variants)

Also Published As

Publication number Publication date
DE59000646D1 (de) 1993-02-04
DE3921755A1 (de) 1991-01-10
EP0406707B1 (fr) 1992-12-23
ATE83627T1 (de) 1993-01-15
ES2037511T3 (es) 1993-06-16
GR3006658T3 (fr) 1993-06-30

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