EP0594093B1 - Chair, particularly office-chair - Google Patents
Chair, particularly office-chair Download PDFInfo
- 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
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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 Characterized By Structure (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Description
Die Erfindung betrifft einen Stuhl, insbesondere Bürostuhl, mit einer verstellbaren Rückenlehne, wobei ein Rückenlehnenlagergehäuse zur Höhenverstellung der Rückenlehne auf einem Rückenlehnenträger verschiebbar gelagert und mittels einer Rastvorrichtung mit einem gegen Federkraft lösbaren Rastelement in seiner Höhenlage stufenweise arretierbar ist.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.
Ein Stuhl mit den vorstehend genannten Merkmalen ist beispielsweise durch die DE-OS 22 55 076 oder die DE-AS 26 33 044 bekannt.A chair with the features mentioned above is known for example from DE-OS 22 55 076 or DE-AS 26 33 044.
Der Erfindung liegt die Aufgabe zugrunde, die Höhenverstelleinrichtung für die Rückenlehne so auszubilden, daß sie konstruktiv einfach und so gestaltet ist, daß sie das Zusammensetzen eines in zerlegtem Zustand erworbenen Stuhles nicht erschwert.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.
Die gestellte Aufgabe wird mit einer Rückenlehnen-Verstelleinrichtung der eingangs genannten Art erfindungsgemäß dadurch gelöst, daß der Rückenlehnenträger zwei mit Abstand parallel zueinander nach oben abstehende Tragarme aufweist, die jeweils mit einem zu ihrem freien oberen Ende hin offenen Schlitz versehen sind, in dessen einem Längsrand Eingriffsausnehmungen für das Rastelement ausgebildet sind, daß das Rückenlehnenlagergehäuse Führungsbahnen für beide Tragarme aufweist und auf die freien Enden der Tragarme aufschiebbar ist, und daß das Rastelement aus einem im Rückenlehnenlagergehäuse von Hand verstellbar gelagerten Raststab besteht, der sich in die Schlitze beider Tragarme erstreckt und gegen den mit den Eingriffsausnehmungen versehenen Längsrand der Schlitze federbelastet ist.The object is achieved with a backrest adjustment device of the type mentioned in accordance with the invention in that 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.
Die Konstruktion gemäß der Erfindung erlaubt eine Vormontage der Rückenlehne einschließlich ihrer Höhenverstelleinrichtung und das Ansetzen der Rückenlehne an das Stuhlgestell durch einfaches Aufschieben über die freien Enden der beiden Tragarme des Rückenlehnenträgers des Stuhlgestelles. Bei diesem Aufschieben kann auch das aus einem Stab bestehende Rastelement der Höhenverstelleinrichtung in die offenen, einseitig mit den Eingriffsausnehmungen versehenen Schlitze eintauchen. Die Schlitze der beiden Tragarme können vorteilhafterweise an ihrer oberen Öffnung jeweils eine aus ihrer gemeinsamen Mittelebene gleichsinnig versetzte Engstelle aufweisen, die der Raststab beim Aufschieben des Rückenlehnenlagergehäuses auf die Tragarme nur unter sichtbarem Ausschwenken des Griffkörpers passieren kann. Dadurch ist jedem Laien erkennbar, wo sich der Griffkörper zur Betätigung der Höhenverstelleinrichtung befindet, und wie er anschließend verschwenkt werden muß, wenn das Rückenlehnenlagergehäuse von der ersten und obersten Eingriffsausnehmung der Schlitze aus unter Ausrasten des Raststabes weiter nach unten auf dem Rückenlehnenträger verstellt werden soll. Vorteilhafterweise kann die Breite der Engstelle kleiner als der Durchmesser des Raststabes bemessen sein, so daß der Raststab die Engstelle der Schlitze nur unter Auffedern der geschlitzten Tragarmenden durch Kraftanwendung passieren kann. Dadurch ist sichergestellt, daß das auf den Rückenlehnenträger des Stuhlgestelles unter Druckanwendung aufgeschobene Rückenlehnenlagergehäuse auch bei durch Betätigen des Griffkörpers gelöstem Raststab bei einer Höhenverstellung des Rückenlehnenlagergehäuses nicht ungewollt wieder vom Rückenlehnenträger des Stuhlgestelles abgezogen wird. Dies ist beispielsweise zum Auswechseln einer Rückenlehne nur mit größerer Kraftanstrengung bei verschwenktem Griffkörper möglich, wobei die Engstellen so konstruiert werden können, daß die Kraft zum Abziehen der Rückenlehne größer sein muß als die Kraft zum Aufschieben der Rückenlehne auf den Rückenlehnenträger des Stuhles.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. When this is pushed on, 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. As a result, every layperson can see where the handle body for actuating the height adjustment device is located and how it has to be pivoted when the backrest bearing housing is to be adjusted further downward on the backrest support from the first and uppermost engagement recess of the slots while disengaging the locking bar. Advantageously, 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.
Die Höhenverstelleinrichtung erfordert nur wenige Einzelteile. Der Raststab kann zweckmäßig mit einem Griffkörper verbunden sein, der in dem Rückenlehnenlagergehäuse in dem Bereich zwischen den Führungsbahnen für die beiden Tragarme um eine Achse verschwenkbar gelagert ist, die parallel zu dem Raststab verläuft. Dabei läßt sich der Griffkörper formschön und unauffällig als in der Eingriffsstellung des Raststabes mit einer Außenwandung des Rückenlehnenlagergehäuses fluchtende und federbelastete Grifftaste ausbilden. Vorteilhafterweise kann der Griffkörper als zweiarmiger Schwenkkörper ausgebildet sein, dessen einer Arm den Raststab trägt und dessen anderer Arm einen als erwähnte Grifftaste ausgebildeten Griffarm bildet.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. Advantageously, 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.
Nachfolgend wird ein Ausführungsbeispiel eines mit einer erfindungsgemäß ausgebildeten Rückenlehnen-Höhenverstellung versehenen Rückenlehnenlagergehäuses für einen Bürostuhl anhand der beiliegenden Zeichnung näher erläutert.An exemplary embodiment of a backrest bearing housing for an office chair provided with a backrest height adjustment designed according to the invention is explained in more detail with reference to the accompanying drawing.
Im einzelnen zeigen:
- Fig. 1
- eine Seitenansicht einer auf einem Rückenlehnenträger eines Bürostuhles montierten Rückenlehne mit dem Rückenlehnenlagergehäuse, teilweise im Schnitt;
- Fig. 2
- eine rückseitige Ansicht des Rückenlehnenlagergehäuses, zur Hälfte im Längsschnitt entlang der Linie II-II in Fig. 1;
- Fig. 3
- eine Einzeldarstellung eines der beiden Tragarme des Rückenlehnenträgers und eine perspektivische Darstellung einer das Rastelement tragenden, im nicht dargestellten Rückenlehnenlagergehäuse gelagerten Grifftaste zur Erläuterung der Wirkungsweise der Höhenverstellvorrichtung;
- Fig. 4
- eine der Fig. 1 entsprechende Seitenansicht beim Aufschieben des Rückenlehnenlagergehäuses auf die Tragarme des Rückenlehnenträgers;
- Fig. 5
- eine den Fig. 1 und 4 entsprechende Seitenansicht der Rückenlehne in montiertem Zustand und bei gelöstem Rastelement zur Höhenverstellung der Rückenlehne.
- Fig. 1
- a side view of a backrest mounted on a backrest support of an office chair with the backrest bearing housing, partly in section;
- Fig. 2
- a rear view of the backrest bearing housing, half in longitudinal section along the line II-II in Fig. 1;
- Fig. 3
- a detailed view of one of the two support arms of the backrest support and a perspective view of a handle button carrying the latching element, which is mounted in the backrest bearing housing, not shown, to explain the mode of operation of the height adjustment device;
- Fig. 4
- a side view corresponding to Figure 1 when sliding the backrest bearing housing onto the support arms of the backrest support.
- Fig. 5
- 1 and 4 corresponding side view of the backrest in the assembled state and with the locking element released for height adjustment of the backrest.
Die Fig. 1, 4 und 5 zeigen eine Rückenlehne 10 eines Bürostuhles, die um eine Pendelachse 11 in einem Rückenlehnenlagergehäuse 12 verschwenkbar gelagert ist. Das Rückenlehnenlagergehäuse 12 ist auf einem Rückenlehnenträger 13 gelagert, der mit einem nicht dargestellten Stuhlgestell verbunden ist, insbesondere ebenfalls verschwenkbar an einem Sitzträger des Stuhles angeordnet ist. Zur Höhenverstellung der Rückenlehne 10 sind das Rückenlehnenlagergehäuse 12 und der Rückenlehnenträger 13 besonders gestaltet.1, 4 and 5 show a
Der Rückenlehnenträger 13 besteht gemäß Fig. 2 aus zwei mit Abstand parallel zueinander verlaufenden, stegartigen Tragarmen 13a und 13b. Beide Tragarme 13a, 13b sind gleich gestaltet und weisen gemäß Fig. 3 einen zu ihrem freien oberen Ende hin offenen Schlitz 14 auf. Einer der beiden Längsränder dieses Schlitzes ist mit mehreren Eingriffsausnehmungen 15 versehen.According to FIG. 2, the
Das freie Ende der Tragarme 13a (13b) ist als unsymmetrischer Einführungstrichter 16 gestaltet, der zu einer den Anfang des Schlitzes 14 bildenden Engstelle 17 führt, die aus der Mittelebene des längsgerichteten Schlitzes 14 versetzt ausgebildet ist.The free end of the support arms 13a (13b) is designed as an
In dem Rückenlehnenlagergehäuse 12 sind gemäß Fig. 2 Führungsbahnen 18 für die beiden Tragarme 13a, 13b ausgebildet, und in dem Bereich zwischen den beiden Führungsbahnen 18 für die Tragarme ist ein an die Querschnittsform des Rückenlehnenlagergehäuses angepaßter Griffkörper 19 um eine Achse 20 im Gehäuse 12 verschwenkbar gelagert. Der Griffkörper 19, der in Fig. 3 einzeln dargestellt ist, ist mit einem parallel zu seiner Schwenkachse 20 verlaufenden Raststab 21 versehen, der mit seinen Enden 21.1 über den Griffkörper 19 hinaus bis in die Führungsbahnen 18 für die Tragarme 13a und 13b ragt. Der Griffkörper 19 ist mittels einer aus Gründen der Übersichtlichkeit in der Zeichnung nicht dargestellten Feder in seine aus Fig. 1 ersichtliche Ruhestellung vorgespannt, in welcher er mit seinen Außenseiten mit den Außenseiten des Rückenlehnenlagergehäuses 12 fluchtet. Der Griffkörper 19 läßt sich von einer auf dem Stuhl sitzenden Person mit einer nach hinten greifenden Hand erfassen und gegen die Kraft der erwähnten Feder um die Achse 20 in Richtung des in Fig. 3 eingezeichneten Pfeiles 22 verschwenken. Da der Griffkörper praktisch die Form eines zweiarmigen Hebels hat, dessen anderer Arm den Raststab 21 trägt, wird bei dieser Schwenkbewegung auch der Raststab verschwenkt. Wie aus Fig. 5 ersichtlich ist, wird dabei der Raststab 21 mit seinen Enden aus den Eingriffsausnehmungen 15 der Schlitze 14 der Tragarme herausgeschwenkt, so daß sich das Rückenlehnenlagergehäuse 12 in Richtung des in Fig. 5 eingezeichneten Doppelpfeiles 23 zur Höhenverstellung der Rückenlehne 10 nach unten oder oben verschieben läßt.According to FIG. 2,
Fig. 4 zeigt das an der Rückenlehne fertig vormontierte Rückenlehnenlagergehäuse 12 beim Ansetzen an den Rückenlehnenträger des Stuhles. Bei diesem Ansetzen tauchen zunächst die freien Enden der beiden Tragarme 13a, 13b in die nach unten offenen Führungsbahnen 18 des Rückenlehnenlagergehäuses 12 ein, und der mit seinen Enden 21.1 in diese Führungsbahnen 18 ragende Raststab 21 gelangt in den unsymmetrischen Einführungstrichter 16 der Tragarme 13a, 13b und beim weiteren Aufschieben in Richtung des Pfeiles 24 in die aus der Mittelebene der Schlitze 14 der Tragarme versetzte obere Engstelle 17 (Fig. 3) der Schlitze. Die Engstelle 17 kann eine kleinere Breite als der Durchmesser des Raststabes 21 haben, so daß die Engstelle 17 nur unter Auffedern der geschlitzten Tragarmenden und durch entsprechende Kraftanwendung von dem Raststab 21 passiert werden kann. Beim Passieren der seitlich versetzten Engstellen 17 erfährt der Griffkörper 19 die in Fig. 4 dargestellte deutliche und dem Stuhlbenutzer erkennbare Verschwenkbewegung nach außen. Sobald der Raststab 21 die Engstellen 17 passiert hat, schwenkt der vorgespannte Griffkörper 19 wieder zurück in seine Ruhelage und bringt dadurch die Enden des Raststabes in eine Eingriffsausnehmung 15. Eine solche Verriegelungsstellung ist in Fig. 1 dargestellt. Der Raststab 21 hindert das Rückenlehnenlagergehäuse an einer weiteren Verschiebung nach unten oder zurück nach oben. Erst wenn der Griffkörper 19 gemäß Fig. 5 in Richtung des Pfeiles 22 in seine Freigabestellung verschwenkt wird, rastet der Raststab 21 aus den Eingriffsausnehmungen 15 aus und erlaubt die Höhenverstellung des Gehäuses 12 und damit der Rückenlehne 10. Ein versehentliches Abziehen der Rückenlehne vom Rückenlehnenträger 13a/13b kann hierbei aber nicht eintreten. Wie am besten aus Fig. 3 ersichtlich ist, fehlt im Innern des Schlitzes 14 eine flache Aufgleitfläche zu der Engstelle 17, so daß zum Abziehen des Rückenlehnenlagergehäuses 12 vom Rückenlehnenträger 13a/13b bei ausgeschwenktem Griffkörper 19 ein erheblich größerer Kraftaufwand erforderlich ist, um die Raststabenden 21.1 durch die Engstellen 17 der Schlitze 14 nach außen zu ziehen.FIG. 4 shows the
Claims (7)
- Chair, in particular an office chair, with an adjustable backrest (10), and a backrest mounting housing (12) for height adjustment of the backrest being displaceably mounted on a backrest carrier (13) and being arrestable in steps by means of a detent mechanism with a detent element (21) which is releasable against the load of a spring, characterized in that the backrest carrier (13) comprises two support arms (13a, 13b), which protrude upwards at a distance from and parallel to each other and which are provided with a slit (14) which is open towards its respective free upper end and in the one longitudinal edge of which are engagement cutouts (15) for the detent element (12), and that the backrest mounting housing (12) comprises guide tracks (18) for both support arms (13a, 13b) and can be pushed onto the free ends of the support arms, and that the detent element is composed of a detent bar (21) which is manually adjustable in the backrest mounting housing (12) and which extends into the slits (14) of both support arms (13a, 13b) and springloaded against the longitudinal edge of the slits (14) which is provided with the engagement cutouts (15).
- Chair according to Claim 1, characterized in that the detent bar (21) is connected to a handle (19) which is mounted in the backrest mounting housing (12) so as to be pivotal around an axis (20), which extends parallel to the detent bar (21), in the area between the guide tracks (18) for both support arms (13a, 13b).
- Chair according to Claim 1 and 2, characterized in that the slits (14) of both support arms (13a, 13b) have at their upper opening a respective narrow passage (17), which is likewise offset from the common central plane and which the detent bar (21) can pass when the backrest mounting housing (12) is pushed onto the support arms only under visible pivoting of the handle (19).
- Chair according to Claim 3, characterized in that the width of the narrow passage (17) is smaller than the diameter of the detent bar (21), and the detent bar can pass the narrow passage only by springing open the slotted support-arm ends by use of force.
- Chair according to one of Claims 1 to 4, characterized in that the handle (19) is designed as a handle grip which is flush with at least one outer wall of the backrest mounting housing (12) and springloaded when in the engaged position of the detent bar (21).
- Chair according to one of Claims 1 to 5, characterized in that the handle (19) is a two-armed pivotal body the one arm of which supports the detent bar (21) and the other arm of which forms a handle arm.
- Chair according to one of Claims 1 to 6, characterized in that the backrest (10) together with the backrest mounting housing (12) and its detent mechanism parts (19 - 21) is a finished pre-assembled unit which can be pushed onto the backrest carrier (13).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4235248 | 1992-10-20 | ||
| DE4235248A DE4235248C1 (en) | 1992-10-20 | 1992-10-20 | Chair, especially office chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0594093A1 EP0594093A1 (en) | 1994-04-27 |
| EP0594093B1 true EP0594093B1 (en) | 1996-06-19 |
Family
ID=6470827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93116762A Expired - Lifetime EP0594093B1 (en) | 1992-10-20 | 1993-10-16 | Chair, particularly office-chair |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0594093B1 (en) |
| DE (2) | DE4235248C1 (en) |
| ES (1) | ES2088620T3 (en) |
| NO (1) | NO933756L (en) |
Family Cites Families (5)
| 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 (en) * | 1985-08-02 | 1987-02-12 | Froescher August Gmbh Co Kg | ADJUSTING DEVICE FOR THE STEP-BY-STEP LOCKING HEIGHT ADJUSTMENT OF BACKRESTS ON WORK CHAIRS |
-
1992
- 1992-10-20 DE DE4235248A patent/DE4235248C1/en not_active Expired - Fee Related
-
1993
- 1993-10-16 ES ES93116762T patent/ES2088620T3/en not_active Expired - Lifetime
- 1993-10-16 EP EP93116762A patent/EP0594093B1/en not_active Expired - Lifetime
- 1993-10-16 DE DE59303007T patent/DE59303007D1/en not_active Expired - Fee Related
- 1993-10-19 NO NO933756A patent/NO933756L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE4235248C1 (en) | 1994-04-07 |
| ES2088620T3 (en) | 1996-08-16 |
| NO933756L (en) | 1994-04-21 |
| EP0594093A1 (en) | 1994-04-27 |
| DE59303007D1 (en) | 1996-07-25 |
| NO933756D0 (en) | 1993-10-19 |
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