EP0743035A1 - Chaise, notamment chaise de bureau, avec un dossier réglable en hauteur - Google Patents

Chaise, notamment chaise de bureau, avec un dossier réglable en hauteur Download PDF

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Publication number
EP0743035A1
EP0743035A1 EP96107628A EP96107628A EP0743035A1 EP 0743035 A1 EP0743035 A1 EP 0743035A1 EP 96107628 A EP96107628 A EP 96107628A EP 96107628 A EP96107628 A EP 96107628A EP 0743035 A1 EP0743035 A1 EP 0743035A1
Authority
EP
European Patent Office
Prior art keywords
backrest
slide
locking
backrest support
shell
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
EP96107628A
Other languages
German (de)
English (en)
Other versions
EP0743035B1 (fr
Inventor
Hermann Bock
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.)
Martin Bock Kunststoffverarbeitung
Original Assignee
Martin Bock Kunststoffverarbeitung
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 Martin Bock Kunststoffverarbeitung filed Critical Martin Bock Kunststoffverarbeitung
Publication of EP0743035A1 publication Critical patent/EP0743035A1/fr
Application granted granted Critical
Publication of EP0743035B1 publication Critical patent/EP0743035B1/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
    • 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
    • A47C7/402—Support for the head or the back for the back adjustable in height

Definitions

  • the invention relates to a chair, in particular an office chair, with a height-adjustable backrest structure according to the preamble of claim 1.
  • these have the height-adjustable backrest structures mentioned at the beginning, which generally have a vertically running backrest support attached to a chair frame and one vertical on the backrest support, in order to adapt the backrest position to the body size of the respective user and thus to improve the seating comfort Slidably guided backrest with a preferably padded, ergonomically shaped backrest shell and a manually triggered locking mechanism between the backrest support and the backrest shell to fix the backrest shell on the backrest support at different heights.
  • At least one vertically extending row of latching projections is arranged on the backrest shell, each of which forms laterally open latching recesses.
  • At least one locking slide is guided on the backrest support so as to be displaceable transversely to the height adjustment direction and detachably engages in one of the locking recesses in order to determine a backrest height position.
  • a manually operable trigger slide is also guided parallel to the height adjustment direction on the backrest support and is coupled to the at least one locking slide by means of a wedge thrust gear.
  • the advantage of this design is that all moving parts of the locking mechanism - namely the locking and the trigger slide - are attached directly to the backrest support. This allows the unit to be preassembled as a backrest support, latching slide and release slide in a manufacturing-friendly manner and can then be completed with the backrest. Due to the gear coupling between the locking slide and the release slide, the locking of the backrest can be released by a simple sliding movement of the release slide, which brings with it the required ease of use.
  • the discussed simple construction of the subject matter of the invention forms a basis for the fact that the backrest shell, the backrest support, the at least one locking slide and the trigger slide can be injection molded from plastic material and all guide elements for mutual sliding guidance of the aforementioned parts can be formed in one piece with the respectively assigned parts as stated in claim 2.
  • This measure increases the ease of assembly to a considerable extent, since the individual parts can only be assembled by pushing them into the corresponding guide elements. Time-consuming assembly steps such as screw connections or the like can be omitted.
  • Claim 3 teaches a particularly stable design of the heavily stressed backrest support, which is designed to be substantially H-shaped in cross section. Due to this cross-sectional shape, the backrest support is structurally very rigid, the areas delimited by the H side legs and the H middle legs connecting them creating assembly spaces for receiving the latching mechanism and the release slide.
  • the height-adjustable backrest construction according to the invention is therefore very compact.
  • the office chair can be used in any usual way, e.g. be designed with a roller frame, a height-adjustable rotating column sitting thereon, a seat support and an upholstered seat surface thereon.
  • the backrest construction as a supporting part on a backrest support 1, which is made completely and in one piece from injection molded plastic.
  • the vertically extending backrest support 1 is provided with an angled portion 2, into which a receptacle 3 for a corresponding fastening element on the seat support (not shown) is molded. Screws for rigidly connecting the backrest support 1 to the seat support can be inserted into the bores 4 in the bend 2 which run vertically and at right angles to the receptacle 3.
  • a backrest 5 which is only partially shown in the drawings, is guided to be vertically displaceable. It consists of a backrest shell 6 which is shaped to fit the body and which is provided with padding 7 on its side facing the user. On its back, the backrest 5 is provided with a cover shell 8, the backrest support 1 projecting into the space 10 between these two parts via an opening 9 between the backrest shell 6 and the cover shell 8.
  • a manually triggered latch mechanism designated as a whole by 11, in order to fix the backrest shell 6 - and thus the backrest 5 - on the backrest support 1 in different height positions.
  • This locking mechanism 11 is described in more detail below.
  • the backrest support 1 has a flat H-shaped cross section with respect to a horizontal sectional plane, whereby two longitudinally extending H-side legs 12, 13 and an H-middle leg 14 connecting them are formed will.
  • outwardly projecting guide projections 16 are integrally formed on the edge facing the backrest shell 6 in order to grip around the vertical guide strips 17 on the backrest shell 6.
  • the guide strips 17 are integrally formed on the back 18 of the backrest shell 6.
  • a vertically extending double row of latching projections 19 is further arranged on the rear side 18 of the backrest shell 6, each forming laterally open latching recesses 20 between them.
  • stop projections 21, 22 are further provided, which limit the displacement movement of the backrest shell 6 on the backrest support 1 up and down in a manner to be explained in more detail after the assembly of the backrest construction.
  • the double row of locking projections 19 together with the stop projections 21 and 22 is designed strictly symmetrical to the central longitudinal plane M of the chair.
  • the locking slides 23, 24 have a flat cuboidal slider body 27, on the sides pointing towards the central longitudinal plane M each locking lugs 28 are integrally formed.
  • the slider bodies 27 On the rear side facing away from the locking lug 28, the slider bodies 27 each have integrally formed centering pins 29, on which a helical compression spring 30 is placed with one end. The other end of the respective helical compression spring 30 is supported in pocket-shaped recesses 31 in the respective H-side legs 12, 13.
  • the locking slides 23, 24 are spring-loaded in the direction of the central longitudinal plane M - that is, in the direction of engagement E - by the helical compression springs 30 in order to ensure the engagement position of the locking lugs 28 in the respective locking recesses 20 and thus a stable fixing of the backrest 5 on the backrest support 1.
  • a manually actuated trigger slide 33 is provided on the outside 32 of the H center leg 14 of the backrest support 1.
  • This has a main part 34 designed as a cuboid-shaped shell, the side chews 35 of which run parallel to the height adjustment direction H are provided with guide webs 36 pointing inwards.
  • the latter each engage in a pair of hook-shaped guide lugs 37 on the outside 32 of the H center leg 14 of the backrest support 1, which are arranged at a considerable distance from the height adjustment direction H to form a sufficient guide length.
  • the trigger slide 33 In the area of its lower end, which protrudes downward from the space 10 between the backrest shell 6 and the cover shell 8, the trigger slide 33 has an elevation 38 which serves as a handle part for actuating the trigger slide 33.
  • the main part 34 continues into two coupling members 39, 40 which are arranged symmetrically with respect to the central longitudinal plane M and which are each provided with a wedge bevel 41 on their outer sides facing away from one another.
  • the two wedge bevels 41 are directed so that they form an acute angle opening downwards.
  • the coupling members 39, 40 each have an outwardly directed stop leg 42 which delimits the respectively assigned wedge bevel 41 at its inner end.
  • a spacing gap 43 remains between the two coupling members 39, 40.
  • the two wedge bevels 41 are a functional part of the wedge thrust transmission formed between the trigger slide 33 and the locking slides 23, 24. These two functional parts are each coupled via a coupling pin 45, which projects from the upper side 46 of the slide body 27, passes through the H center leg 14 of the backrest support 1 and is in contact with the associated wedge bevel 41.
  • the coupling pins 45 of the two locking slides 23, 24 pass through a common recess 47 in the H center leg 14, which extends transversely to the height adjustment direction H and, starting from its center point, has an extension 48 which runs upwards parallel to the height adjustment direction H.
  • the recess 47 is thus T-shaped in plan view (Fig. 3, 4).
  • a detent spring tongue 49 which is integrally formed on the backrest support 1 and which has at its free end 50 a thickening 51 which points forward from the cross section of the H center leg 14 to the backrest shell 6. The latter thus runs between the two rows of locking projections 19 on the backrest shell 6.
  • the thickening 51 interacts with the two stop projections 21, 22 on the backrest shell 6 to limit the height adjustment range of the backrest 5.
  • Fig. 3 the highest position of the backrest 5 on the backrest support 1 is shown as an example.
  • the trigger slide 33 is in its downward pushed rest position, in which the locking slides 23, 24 engage with their locking lugs 28 in the lowermost locking recess 20.
  • the coupling pins 45 of the locking slide 23, 24 rest on the stop legs 42 of the coupling members 39, 40, whereby the rest position of the trigger slide 33 is defined at the same time.
  • the trigger slide 33 is pushed upward by the trigger path A (FIG. 4), which is delimited by the stop pins 44 formed on the backrest support 1 above the coupling members 39, 40.
  • the locking slides 23, 24 are pressed outward via the gear coupling of the wedge bevels 41 with the coupling pins 45, so that their locking lugs 28 are lifted out of the locking recesses 20.
  • the backrest 5 can then, for example, in the lowest position shown in FIG. 4 - or also in one of the positions in between lying recesses defined rest positions - are spent.
  • the latching slides 23, 24 are pushed inward under the influence of the coil springs 30, so that their latching lugs 28 again immerse in the corresponding latching recesses 20.
  • the backrest support 1 with release slide 33 and locking slides 23, 24 including the helical compression spring 30 can be completely preassembled, so that the configuration shown in FIG. 3 is achieved.
  • the backrest 5 To put the backrest 5 on, it only has to be pushed on and the trigger slide 33 actuated.
  • the underside of the lower stop projection 22 on the backrest shell 6 runs onto the thickening 51 of the detent spring tongue 49. So that the detent spring tongue 49 can then be guided more easily over the stop projection 22, this is provided on its underside with a bevel 52.
  • the detent spring tongue 49 dips into the area between the stop projections 21, 22 and the detent projections 19, the backrest 5 is secured against unintentional removal.
  • the backrest shell 6, the backrest support 1, the locking slides 23, 24 and the release slide 33 with all their guide elements, stops, projections and the like are made in one piece from injection-molded plastic, so that the height-adjustable backrest construction with a conceivably small number on individual parts.

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Special Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP96107628A 1995-05-17 1996-05-14 Chaise, notamment chaise de bureau, avec un dossier réglable en hauteur Expired - Lifetime EP0743035B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29508082U 1995-05-17
DE29508082U DE29508082U1 (de) 1995-05-17 1995-05-17 Stuhl, insbesondere Bürostuhl, mit einer höhenverstellbaren Rückenlehnenkonstruktion

Publications (2)

Publication Number Publication Date
EP0743035A1 true EP0743035A1 (fr) 1996-11-20
EP0743035B1 EP0743035B1 (fr) 1999-04-14

Family

ID=8008099

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96107628A Expired - Lifetime EP0743035B1 (fr) 1995-05-17 1996-05-14 Chaise, notamment chaise de bureau, avec un dossier réglable en hauteur

Country Status (3)

Country Link
US (1) US5678893A (fr)
EP (1) EP0743035B1 (fr)
DE (2) DE29508082U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19812805A1 (de) * 1998-03-16 1999-09-30 Drabert Gmbh Bürostuhl mit einer höhenverstellbaren Rückenlehne

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1288685B1 (it) * 1996-11-05 1998-09-23 Beniamino Miotto Dispositivo di sicurezza particolarmente per meccanismi di alzata di uno schienale di una sedia o di una poltrona
DE19717077B4 (de) * 1997-04-23 2004-11-18 Bock-1 Gmbh & Co. Höhenverstellbare Armlehne, insbesondere für einen Bürostuhl
GB9802447D0 (en) 1998-02-04 1998-04-01 Unit Press Limited Mechanism for chair
GB9811209D0 (en) 1998-05-22 1998-07-22 Unit Press Limited Height adjustment for back part of chair
GB9928509D0 (en) 1999-12-03 2000-02-02 Unit Press Limited Improvements to chairs
DE20004361U1 (de) * 2000-03-10 2001-04-12 FROLI Kunststoffwerk Heinrich Fromme oHG, 33758 Schloß Holte-Stukenbrock Sitz für eine Stehhilfe oder für einen Büro- bzw. Werkstattstuhl
US6533352B1 (en) 2000-07-07 2003-03-18 Virco Mgmt. Corporation Chair with reclining back rest
US7604298B2 (en) 2007-06-01 2009-10-20 Steelcase Development Corporation Chair back attachment and method of assembly
NZ588366A (en) * 2008-04-02 2013-03-28 Sicpa Holding Sa Identification and authentication using liquid crystal material markings
US7690729B2 (en) * 2008-08-14 2010-04-06 Liao Tzu-Ying Adjustable chair headrest frame
DE102009014777B4 (de) * 2009-03-25 2017-03-30 Wilkhahn Wilkening + Hahne Gmbh + Co. Kg Verstellvorrichtung
US11096496B2 (en) 2019-04-11 2021-08-24 Hugh Charles Murray Therapeutic chair with adjustable back and method of using the same
CN113001138B (zh) * 2021-03-03 2022-02-11 杭州秋韵工贸有限公司 一种椅背座滑移机构的安装工装

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081898A2 (fr) * 1981-12-14 1983-06-22 Simmons Universal Corporation Dispositif de réglage
EP0210584A2 (fr) * 1985-08-02 1987-02-04 August Fröscher GmbH & Co. K.G. Dispositif de réglage pour le réglage graduel et blocable de la hauteur de dossiers de chaises de travail
US4662682A (en) * 1985-10-15 1987-05-05 Maurel Jacques A Seat back height adjustment mechanism

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043592A (en) * 1975-09-05 1977-08-23 Steelcase Inc. Adjustable seat back mechanism
US4012158A (en) * 1975-09-15 1977-03-15 Harper Henry J Adjustable seat-back mechanism
DE3038880C2 (de) * 1980-10-15 1985-05-02 Martin Stoll GmbH, 7890 Waldshut-Tiengen Vorrichtung zur stufenweisen Abstandsverstellung von zwei Stuhlteilen
DE8905077U1 (de) * 1989-04-21 1989-06-15 Wiesner-Hager KG, Altheim Stuhl mit höhenverstellbarer Rückenlehne
DE9107855U1 (de) * 1991-06-26 1991-10-10 Christof Stoll Gmbh & Co Kg, 7890 Waldshut-Tiengen Arretierbare Höhenverstelleinrichtung für die Lehne eines Stuhles
US5265938A (en) * 1991-12-05 1993-11-30 Westinghouse Electric Corp. Adjustable arm for a chair
US5536070A (en) * 1993-10-06 1996-07-16 Lemmen; Roger D. Adjustable ergonomic arm rest

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081898A2 (fr) * 1981-12-14 1983-06-22 Simmons Universal Corporation Dispositif de réglage
EP0210584A2 (fr) * 1985-08-02 1987-02-04 August Fröscher GmbH & Co. K.G. Dispositif de réglage pour le réglage graduel et blocable de la hauteur de dossiers de chaises de travail
US4662682A (en) * 1985-10-15 1987-05-05 Maurel Jacques A Seat back height adjustment mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19812805A1 (de) * 1998-03-16 1999-09-30 Drabert Gmbh Bürostuhl mit einer höhenverstellbaren Rückenlehne

Also Published As

Publication number Publication date
US5678893A (en) 1997-10-21
DE29508082U1 (de) 1995-09-14
DE59601641D1 (de) 1999-05-20
EP0743035B1 (fr) 1999-04-14

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