EP0594093B1 - Chaise, notamment chaise de bureau - Google Patents

Chaise, notamment chaise de bureau Download PDF

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Publication number
EP0594093B1
EP0594093B1 EP93116762A EP93116762A EP0594093B1 EP 0594093 B1 EP0594093 B1 EP 0594093B1 EP 93116762 A EP93116762 A EP 93116762A EP 93116762 A EP93116762 A EP 93116762A EP 0594093 B1 EP0594093 B1 EP 0594093B1
Authority
EP
European Patent Office
Prior art keywords
backrest
support arms
detent
chair
handle
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
EP93116762A
Other languages
German (de)
English (en)
Other versions
EP0594093A1 (fr
Inventor
Martin Zwetz
Oliver Hirschoff
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.)
Wilhelm Link & Co KG Stahlrohrmobel GmbH
Original Assignee
Wilhelm Link & Co KG Stahlrohrmobel 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 Wilhelm Link & Co KG Stahlrohrmobel GmbH filed Critical Wilhelm Link & Co KG Stahlrohrmobel GmbH
Publication of EP0594093A1 publication Critical patent/EP0594093A1/fr
Application granted granted Critical
Publication of EP0594093B1 publication Critical patent/EP0594093B1/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 an adjustable backrest, a backrest bearing housing for the height adjustment of the backrest being slidably mounted on a backrest support and being gradually lockable in its height position by means of a locking device with a locking element which can be released against spring force.
  • a chair with the features mentioned above is known for example from DE-OS 22 55 076 or DE-AS 26 33 044.
  • the invention has for its object to design the height adjustment device for the backrest so that it is structurally simple and designed so that it does not complicate the assembly of a chair acquired in a disassembled state.
  • the backrest support has two support arms which project upwards at a distance parallel to one another, each are provided with a slot open towards their free upper end, in one longitudinal edge of which engagement recesses are formed for the latching element, that the backrest bearing housing has guideways for both support arms and can be pushed onto the free ends of the support arms, and that the latching element consists of a in the backrest bearing housing there is a manually adjustable locking rod which extends into the slots of both support arms and is spring-loaded against the longitudinal edge of the slots provided with the engagement recesses.
  • the construction according to the invention allows a pre-assembly of the backrest including its height adjustment device and the attachment of the backrest to the chair frame by simply sliding over the free ends of the two support arms of the backrest support of the chair frame.
  • the locking element of the height adjustment device consisting of a rod can also be immersed in the open slots provided on one side with the engagement recesses.
  • the slots of the two support arms can advantageously each have at their upper opening a constriction offset in the same direction from their common center plane, which the locking bar can only pass through when the backrest bearing housing is slid onto the support arms while the handle body is pivoted out visibly.
  • the width of the constriction can be smaller than the diameter of the locking rod, so that the locking rod can pass the constriction of the slots only by springing open the slotted support arm ends by applying force. This ensures that the slid onto the backrest support of the chair frame under pressure Backrest bearing housing is not inadvertently pulled off the backrest support of the chair frame even when the locking rod is released by actuating the handle body when the backrest bearing housing is adjusted in height.
  • This is possible, for example, to replace a backrest only with greater effort when the handle body is pivoted, and the constrictions can be constructed so that the force for pulling the backrest must be greater than the force for pushing the backrest onto the backrest support of the chair.
  • the height adjustment device requires only a few individual parts.
  • the locking bar can expediently be connected to a handle body which is mounted in the backrest bearing housing in the region between the guideways for the two support arms so as to be pivotable about an axis which runs parallel to the locking bar.
  • the handle body can be designed in an elegant and unobtrusive manner as a flush and spring-loaded handle button in the engagement position of the locking rod with an outer wall of the backrest bearing housing.
  • the handle body can be designed as a two-armed swivel body, one arm of which carries the locking bar and the other arm of which forms a handle arm designed as a handle button.
  • FIG 1, 4 and 5 show a backrest 10 of an office chair, which is pivotally mounted about a pendulum axis 11 in a backrest bearing housing 12.
  • the backrest bearing housing 12 is mounted on a backrest support 13, which is connected to a chair frame, not shown, and in particular is also pivotably arranged on a seat support of the chair.
  • the backrest bearing housing 12 and the backrest support 13 are specially designed for height adjustment of the backrest 10.
  • the backrest support 13 consists of two web-like support arms 13a and 13b which run parallel and at a distance from one another. Both support arms 13a, 13b have the same design and, according to FIG. 3, have a slot 14 which is open towards their free upper end. One of the two longitudinal edges of this slot is provided with a plurality of engagement recesses 15.
  • the free end of the support arms 13a (13b) is designed as an asymmetrical insertion funnel 16, which leads to a narrow point 17 forming the beginning of the slot 14, which is offset from the central plane of the longitudinal slot 14.
  • guide tracks 18 for the two support arms 13a, 13b are formed in the backrest bearing housing 12, and in the area between the two guide tracks 18 for the support arms a handle body 19 adapted to the cross-sectional shape of the backrest bearing housing can be pivoted about an axis 20 in the housing 12 stored.
  • the handle body 19, which is shown individually in FIG. 3, is provided with a locking rod 21 running parallel to its pivot axis 20, the ends 21.1 of which protrude beyond the handle body 19 into the guideways 18 for the support arms 13a and 13b.
  • the handle body 19 is biased by means of a spring (not shown in the drawing for reasons of clarity) into its inoperative position shown in FIG. 1, in which it is aligned with its outer sides with the outer sides of the backrest bearing housing 12.
  • the grip body 19 can be gripped by a person sitting on the chair with a hand reaching back and pivoted against the force of the spring mentioned about the axis 20 in the direction of the arrow 22 shown in FIG. 3. Since the handle body practically has the shape of a two-armed lever, the other arm of which carries the locking rod 21, the locking rod is also pivoted during this pivoting movement. As can be seen from Fig. 5, the locking rod 21 is pivoted with its ends out of the engagement recesses 15 of the slots 14 of the support arms, so that the backrest bearing housing 12 in the direction of the double arrow 23 shown in Fig. 5 for height adjustment of the backrest 10 downwards or can move above.
  • FIG. 4 shows the backrest bearing housing 12 pre-assembled on the backrest when it is attached to the backrest support of the chair.
  • the free ends of the two support arms 13a, 13b first immerse in the downwardly open guideways 18 of the backrest bearing housing 12, and the latching rod 21, which projects with its ends 21.1 into these guideways 18, reaches the asymmetrical insertion funnel 16 of the support arms 13a, 13b and when pushed further in the direction of arrow 24 into the upper constriction 17 (FIG. 3) of the slots offset from the central plane of the slots 14 of the support arms.
  • the constriction 17 can have a smaller width than the diameter of the locking rod 21, so that the constriction 17 can only be passed by the locking rod 21 by springing open the slotted support arm ends and by appropriate application of force.
  • the grip body 19 experiences the clear pivoting movement shown in FIG. 4 and recognizable to the chair user to the outside.
  • the prestressed handle body 19 pivots back into its rest position and thereby brings the ends of the locking bar into an engagement recess 15. Such a locking position is shown in FIG. 1.
  • the locking rod 21 prevents the backrest bearing housing from moving further down or back up. Only when the handle body 19 according to FIG.

Landscapes

  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Claims (7)

  1. Chaise, en particulier chaise de bureau, comportant un dossier (10) réglable, dans laquelle un boîtier de support de dossier (12) est monté coulissant sur un support de dossier (13), pour le réglage en hauteur du dossier et peut être bloqué graduellement dans sa position en hauteur au moyen d'un dispositif d'encliquetage avec un élément d'encliquetage (21) déverrouillable à l'encontre d'une force de ressort, caractérisée en ce que le support de dossier (13) comporte deux bras de support (13a, 13b), parallèles entre eux, espacés, dépassant vers le haut, qui sont pourvus chacun d'une fente (14) ouverte vers leur extrémité libre supérieure, dans un bord longitudinal de laquelle sont formés des évidements d'engagement (15) pour l'élément d'encliquetage (21), en ce que le boîtier de support de dossier (12) présente des voies de guidage (18) pour les deux bras de support (13a, 13b) et peut être enfilé sur les extrémités libres des bras de support, et en ce que l'élément d'encliquetage est constitué d'une barre d'encliquetage (21) montée réglable manuellement dans le boîtier de support de dossier (12), laquelle s'étend dans les fentes (14) des deux bras de support (13a, 13b) et est soumise à l'action d'un ressort contre le bord longitudinal des fentes (14) pourvu des évidements d'engagement (15).
  2. Chaise selon la revendication 1, caractérisée en ce que la barre d'encliquetage (21) est reliée à un corps de préhension (19), qui est monté dans le boîtier de support de dossier (12), dans la zone comprise entre les voies de guidage (18) pour les deux bras de support (13a, 13b), de manière à pouvoir pivoter autour d'un axe (20), qui est parallèle à la barre d'encliquetage (21).
  3. Chaise selon les revendications 1 et 2, caractérisée en ce que les fentes (14) des deux bras de support (13a, 13b) présentent chacune, à leur ouverture supérieure, un point d'étranglement (17) décalé dans le même sens, hors de leur plan médian commun, que la barre d'encliquetage (21) ne peut passer, lors de l'enfilement du boîtier du support de dossier (12) sur les bras de support, que par pivotement visible du corps de préhension (19).
  4. Chaise selon la revendication 3, caractérisée en ce que la largeur du point d'étranglement (17) est inférieure au diamètre de la barre d'encliquetage (21) et la barre d'encliquetage ne peut passer le point d'étranglement que par détente élastique des extrémités fendues des bras de support, sous l'effet de l'application d'une force.
  5. Chaise selon l'une des revendications 1 à 4, caractérisée en ce que le corps de préhension (19) est configuré en touche soumise à l'action d'un ressort et aligné avec au moins une paroi extérieure du boîtier de support de dossier (12), dans la position d'engagement de la barre d'encliquetage (21).
  6. Chaise selon l'une des revendications 1 à 5, caractérisée en ce que le corps de préhension (19) est configuré en corps pivotant à deux bras, dont un bras porte la barre d'encliquetage (21) et dont l'autre bras forme un bras de préhension.
  7. Chaise selon l'une des revendications 1 à 6, caractérisée en ce que le dossier (10) avec le boîtier de support de dossier (12) et ses parties de dispositif d'encliquetage (19-21), est configuré en unité prémontée finie et peut être enfilé sur le support de dossier (13).
EP93116762A 1992-10-20 1993-10-16 Chaise, notamment chaise de bureau Expired - Lifetime EP0594093B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4235248 1992-10-20
DE4235248A DE4235248C1 (de) 1992-10-20 1992-10-20 Stuhl, insbesondere Bürostuhl

Publications (2)

Publication Number Publication Date
EP0594093A1 EP0594093A1 (fr) 1994-04-27
EP0594093B1 true EP0594093B1 (fr) 1996-06-19

Family

ID=6470827

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93116762A Expired - Lifetime EP0594093B1 (fr) 1992-10-20 1993-10-16 Chaise, notamment chaise de bureau

Country Status (4)

Country Link
EP (1) EP0594093B1 (fr)
DE (2) DE4235248C1 (fr)
ES (1) ES2088620T3 (fr)
NO (1) NO933756L (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1371641A (en) * 1971-11-23 1974-10-23 Parnall & Sons Ltd Chairs
US4043592A (en) * 1975-09-05 1977-08-23 Steelcase Inc. Adjustable seat back mechanism
GB2082901A (en) * 1980-08-22 1982-03-17 Ring Mekanikk As A flexible coupling device between a fixed part and a pivotable and adjustable part
US4451084A (en) * 1981-12-14 1984-05-29 Simmons Universal Corporation Backrest height adjustment for office chair
DE3527783A1 (de) * 1985-08-02 1987-02-12 Froescher August Gmbh Co Kg Verstelleinrichtung fuer die stufenweise arretierbare hoehenverstellung von rueckenlehnen an arbeitsstuehlen

Also Published As

Publication number Publication date
NO933756L (no) 1994-04-21
NO933756D0 (no) 1993-10-19
EP0594093A1 (fr) 1994-04-27
DE59303007D1 (de) 1996-07-25
ES2088620T3 (es) 1996-08-16
DE4235248C1 (de) 1994-04-07

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