EP0347538B1 - Stuhl, insbesondere Bürostuhl - Google Patents

Stuhl, insbesondere Bürostuhl Download PDF

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Publication number
EP0347538B1
EP0347538B1 EP89106441A EP89106441A EP0347538B1 EP 0347538 B1 EP0347538 B1 EP 0347538B1 EP 89106441 A EP89106441 A EP 89106441A EP 89106441 A EP89106441 A EP 89106441A EP 0347538 B1 EP0347538 B1 EP 0347538B1
Authority
EP
European Patent Office
Prior art keywords
seat
back rest
chair
panel
backrest
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.)
Expired - Lifetime
Application number
EP89106441A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0347538A1 (de
Inventor
Elke Dauphin
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.)
Buerositzmobelfabrik Friedrich-W Dauphin & Co GmbH
Original Assignee
Buerositzmobelfabrik Friedrich-W Dauphin & Co GmbH
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 Buerositzmobelfabrik Friedrich-W Dauphin & Co GmbH filed Critical Buerositzmobelfabrik Friedrich-W Dauphin & Co GmbH
Priority to AT89106441T priority Critical patent/ATE69704T1/de
Publication of EP0347538A1 publication Critical patent/EP0347538A1/de
Application granted granted Critical
Publication of EP0347538B1 publication Critical patent/EP0347538B1/de
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
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/02—Upholstery attaching 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—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/446—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with fluid springs

Definitions

  • the invention relates to a chair according to the preamble of claim 1.
  • Such office chairs known from EP-A-0179185 have a so-called synchronous mechanism, pivoting movements of the seat part on the one hand and the backrest on the other hand mechanically coupled in such a way that the inclination changes of the seat part are generally less than the inclination changes of the backrest.
  • a force accumulator which acts to generate a restoring force in the direction of pivoting up the backrest and the seat part can generally be blocked.
  • the backrest is visually clearly separated from the seat part.
  • so-called executive chairs office chairs which have a continuous seat shell, in which the seat part and the backrest are at least externally formed in one piece and are in particular provided with a continuous cushion cover.
  • the seat part and the backrest have a common spring steel frame which is elastically deformable in the transition region from the seat part to the backrest.
  • This frame is articulated on a seat support in the front region of the seat part by means of a pivot axis.
  • On the seat support a fixable but pivotable lever is attached, which engages the backrest. When this lever is released, the quadrilateral joint formed in this way can be pivoted, as a result of which the seat part is inclined and the backrest is tilted more backwards while deforming the seat shell.
  • the invention has for its object to provide an office chair in which a continuous seat shell is produced with simple means, which is deformable in itself.
  • the measures according to claim 5 allow the further design of the chair to a chair with armrests in a simple manner.
  • An office chair shown in Fig. 1 has a base frame 1, which is supported by rollers 2 against the floor.
  • a height-adjustable chair column 3 is attached, at the upper end of which a seat support 4 is detachably fastened, on which a continuous seat shell 7 consisting of a seat part 5 and a backrest 6, in the region between the seat part 5 and the backrest 6, is attached .
  • the height of the chair column 3 is adjusted by means of an operating lever 8 mounted in the seat support 4.
  • a further operating lever 9 is mounted on the seat support 4.
  • the seat support 4 can be partially or largely covered by a panel 10 attached to the underside of the seat shell 7.
  • the chair is provided with armrests 11, which are attached on the one hand in the area of the front of the seat part 5 and on the other hand in the central height area of the backrest 6.
  • the seat bracket 4 is divided. It consists of a front seat support part 12 and a rear seat support part 13, which are essentially U-shaped and open at the bottom Have cross-section. It follows that they each have two side walls 14, 15 and 16, 17, which are each connected to each other by the seat 5 facing floors 18 and 19.
  • the two seat support parts 12, 13 are connected to one another by a pivot axis 20 arranged adjacent to their upper floors 18, 19. The pivot axis 20 is therefore in the upper region of the two seat support parts 12, 13.
  • a front seat holder 21 is attached so as to be pivotable about a pivot axis 22 parallel to the pivot axis 20.
  • the seat bracket 21 is replaced by a crosswise to the main plane of symmetry of the chair, i.e. 2 C-profile formed transversely to the plane of the drawing.
  • a rigid seat plate 23 which forms the core of the seat part 5, is supported and fastened via rubber buffers 24.
  • the seat plate 23 is also supported and fastened in its rear area facing the backrest 6 via rubber buffers 25 on a rear seat holder 26, which is also supported by a plane transverse to the main plane of symmetry of the chair, i.
  • An angle profile extending transversely to the plane of the drawing in FIG. 2 is formed.
  • a length-adjustable energy store in the form of a length-adjustable gas spring 27 is articulated about a pivot axis 28 which leads to the pivot axes 20 and 22 runs parallel.
  • This Pivot axis 28 faces the housing 29 of the gas spring 27, from the other end of which a piston rod 30 is led out.
  • An actuating pin 31 protrudes from this piston rod 30, by means of which a valve located in the gas spring can be actuated for length adjustment.
  • the piston rod 30 is connected by a thread to an actuating device 32, to which the actuating lever 9 belongs.
  • This actuating device 32 is pivotally mounted between the side walls 14, 15 of the front seat support part 12 parallel to the pivot axes 20, 22, 28.
  • the actuating lever 9 is led out through an elongated hole 33 in the associated side wall 16 of the rear seat support part 13, this elongated hole 33 being curved such that its center coincides with the pivot axis 20.
  • a bearing block 34 designed in the manner of a box profile is fastened, in which a downwardly widening and downwardly open conical sleeve 35 is formed.
  • the chair column 3 is detachably fastened in this cone sleeve 35.
  • the actuating lever 8 is arranged above the bearing block 34.
  • the front and rear seat support parts 12 and 13 are pivoted relative to one another about the pivot axis 20, the front seat support part 12 not changing its position, ie the rear one, because of the rigid — albeit detachable — connection to the chair column 3
  • Seat support part 13 is changed in its inclination.
  • the inclination of the seat plate 23 is simultaneously changed in its inclination.
  • the height-adjustable chair column 3 is known, for example, from DE-C-1931012 (corresponding to US-A-3711054) and DE-C-1812282 (corresponding to US-A-3656593).
  • the structure of the seat support including the described pivoting possibility is known for example from EP-A-0179185.
  • Structure and arrangement of the actuating device 32 and the gas spring 27 are known from EP-A-0179216 (corresponding to US-A-4662480).
  • a fork-shaped bracket 36 is attached to the rear seat holder 26, that is to say in the rear region of the rear seat support part 13. It has a transverse web 37 which extends transversely to the main symmetry plane of the chair and is fastened to the rear seat holder 13 by means of screws 38. Arms 39, which are bent parallel to one another and extend from the approximately horizontal position of the cross bar 37, extend backwards and upwards from the two lateral ends of this cross bar 37. A rigid backrest plate 40 is fastened to the upper ends of these arms by means of screws 41, which forms the core of the backrest 6.
  • the arms 39 have - as can be seen in particular in FIG. 3 - in their area adjoining the transverse web 37 a section 42 which runs obliquely backwards and upwards.
  • the seat plate 23 In its lower region, the seat plate 23 also has an obliquely running backwards and upwards Section 43, which lies essentially between or laterally next to the sections 42 of the arms 39. In this area, therefore, the arms 39 with their sections 42 lie approximately in the rear section 43 of the seat plate 23. From the section 42, an upper section 44 extends upwards, to the upper ends of which the backrest plate 40 is fastened.
  • the bracket 36 as a whole and in particular the curved arms 39 are rigid in themselves.
  • the arms 39 consist of sufficiently thick flat steel. Between the two arms are some connecting strips 45 running parallel to the crossbar 37.
  • the seat shell 7 is continuously provided on its top with a cushion pad 46, for example made of foam, i.e. this covers the backrest 6, the opening 47 located between the backrest plate 40 and the seat plate 23 and delimited by the arms 39 of the bracket 36 and the top of the seat plate 23.
  • the connecting bars 45 bridging the opening 47 prevent this cushion pad 46 from being pushed through to the rear of the chair.
  • the back of the backrest plate 40 and the back of the opening 47 are provided with a cushion pad 48.
  • the upholstery pads 46, 48 are covered with an upholstery cover 49, which therefore covers the entire inside of the seat shell 7 and the back of the backrest 6 up to the area of the seat support 4.
  • the seat support 4 is a so-called synchronous mechanism, ie when the gas spring 27 is adjusted in length, on the one hand the inclination of the seat plate 23 and thus the seat part 5 and on the other hand the inclination of the backrest plate 40 and so that the backrest 6 on the other hand changed.
  • 3 shows that when the backrest 6 is pivoted back, its inclination is changed more than the inclination of the seat part 5.
  • the seat plate 23 and the backrest plate 40 are each shown in their most highly or shown in the forward pivoted position and drawn in dash-dotted lines in their pivoted downward or rearward position.
  • the armrests 11 are flexible in themselves, i.e. during the described pivoting movements of the backrest 6, they can deform elastically, in particular in the strongly curved transition section 50 between the approximately vertical support section 51 and the approximately horizontal armrest section 52. They can be pivoted at both ends by means of swivel joints 53, 54 on the Underside of the seat plate 23 or attached to the backrest plate in the region of the upper end of the arms 39.
  • the actuating device 32 can be blocked so that the actuating pin 31 of the gas spring 27 is constantly pushed into it, so that its inner valve is therefore constantly is open, then the chair can be rocked with constant repeated deformation of the seat shell 7.

Landscapes

  • Chairs Characterized By Structure (AREA)
EP89106441A 1988-06-22 1989-04-11 Stuhl, insbesondere Bürostuhl Expired - Lifetime EP0347538B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89106441T ATE69704T1 (de) 1988-06-22 1989-04-11 Stuhl, insbesondere buerostuhl.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3821042 1988-06-22
DE8808022U DE8808022U1 (xx) 1988-06-22 1988-06-22
DE3821042A DE3821042A1 (de) 1988-06-22 1988-06-22 Stuhl, insbesondere buerostuhl

Publications (2)

Publication Number Publication Date
EP0347538A1 EP0347538A1 (de) 1989-12-27
EP0347538B1 true EP0347538B1 (de) 1991-11-27

Family

ID=39345489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106441A Expired - Lifetime EP0347538B1 (de) 1988-06-22 1989-04-11 Stuhl, insbesondere Bürostuhl

Country Status (4)

Country Link
EP (1) EP0347538B1 (xx)
DE (2) DE3821042A1 (xx)
ES (1) ES2028406T3 (xx)
GR (1) GR3003216T3 (xx)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9102301U1 (xx) * 1991-02-27 1991-05-16 Buerositzmoebelfabrik Friedrich-W. Dauphin Gmbh & Co, 8561 Offenhausen, De
DE9211244U1 (xx) * 1992-08-21 1992-10-29 Dauphin Friedrich W Gmbh
NO2908696T3 (xx) * 2012-10-18 2018-05-05
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
EP3282899B1 (en) 2015-04-13 2021-11-03 Steelcase Inc. Seating arrangement
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
EP4268676A3 (en) 2019-02-21 2024-02-07 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3152945C1 (de) * 1981-08-19 1987-06-19 Giroflex Entwicklungs Ag Stuhl mit schwenkbaren Sitz und relativ dazu schwenkbarer Rueckenlehne
EP0179185B1 (de) * 1984-10-24 1990-06-13 Bürositzmöbelfabrik Friedrich-W. Dauphin GmbH & Co. Stuhl, insbesondere Bürostuhl
DE8515221U1 (de) * 1985-05-23 1986-05-22 VOKO - Franz Vogt & Co, 6301 Pohlheim Sitzmöbel
US4744603A (en) * 1986-04-10 1988-05-17 Steelcase Inc. Chair shell with selective back stiffening
DE3618705C2 (de) * 1986-06-04 2002-04-11 Hartmut S Engel Funktions-Sitzmöbel
CH672237A5 (en) * 1986-10-14 1989-11-15 Giroflex Entwicklungs Ag Relaxing chair

Also Published As

Publication number Publication date
EP0347538A1 (de) 1989-12-27
GR3003216T3 (en) 1993-02-17
ES2028406T3 (es) 1992-07-01
DE3821042A1 (de) 1989-12-28
DE8808022U1 (xx) 1988-08-11

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