EP3116348A1 - Chair, in particular office chair - Google Patents

Chair, in particular office chair

Info

Publication number
EP3116348A1
EP3116348A1 EP15711653.4A EP15711653A EP3116348A1 EP 3116348 A1 EP3116348 A1 EP 3116348A1 EP 15711653 A EP15711653 A EP 15711653A EP 3116348 A1 EP3116348 A1 EP 3116348A1
Authority
EP
European Patent Office
Prior art keywords
plug
chair
locking
backrest
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
EP15711653.4A
Other languages
German (de)
French (fr)
Other versions
EP3116348B1 (en
Inventor
Martin Potrykus
Armin Sander
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.)
Bock 1 GmbH and Co KG
Original Assignee
Bock 1 GmbH and Co KG
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 Bock 1 GmbH and Co KG filed Critical Bock 1 GmbH and Co KG
Publication of EP3116348A1 publication Critical patent/EP3116348A1/en
Application granted granted Critical
Publication of EP3116348B1 publication Critical patent/EP3116348B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A47C7/42—Support for the head or the back for the back of detachable or loose type
    • 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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C4/00—Foldable, collapsible or dismountable chairs
    • A47C4/02—Dismountable chairs
    • 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
    • A47C7/54—Supports for the arms
    • A47C7/546—Supports for the arms of detachable type

Definitions

  • the invention relates to a chair, in particular an office chair, with a backrest coupled to a seat support via a backrest support and with a seat surface and optionally with two armrests.
  • a modern office chair such as is known, for example, from DE 20 2005 017 321 U1 and from DE 101 22 945 A1, usually comprises a seat support resting on a chair column, to which a backrest support for a backrest is mechanically pivotably coupled.
  • a corresponding, in particular spring-loaded pivot mechanism allows the backrest to tilt backwards against, for example, an adjustable spring return force. If necessary, existing armrests are therefore usually connected to the backrest support to perform together with the backrest a tilting movement.
  • Such an office chair is further usually adjustable in height by appropriate design of the chair column and on rollers, which are held on star-shaped boom arms, slidably in a smooth manner.
  • such an office chair is also provided with a synchronous mechanism, which allows a synchronous movement of the seat with the backrest.
  • the invention has for its object to make such an office chair mountable so that it can be transported and / or stored to save space.
  • the chair according to the invention in particular office chair, designed to be mounted without tools by particularly preferably the backrest support is formed in two parts forming second support legs, which are joined in the course of assembly in a positive connection and locked in this. Additionally or alternatively, any existing armrests may also be joined in a corresponding positive plug-in connection with the backrest support and locked in this connector.
  • this is formed from a first support leg assigned to the seat support and a second support leg assigned to the backrest, the back side (second) support leg being locked to the seat support side (first) support leg in the positive plug connection in the course of the joining operation ,
  • the carrier legs on the plug side a shaft or socket-like plug-in receptacle and the other carrier leg on the plug side a corresponding plug-in shaft.
  • the locking of the two carrier legs together is carried out in an advantageous embodiment by means of a locking bolt, which is rotatably disposed within the socket and thereby, preferably in the insertion direction of the socket of the corresponding support leg, pivotally mounted.
  • a locking bolt which is rotatably disposed within the socket and thereby, preferably in the insertion direction of the socket of the corresponding support leg, pivotally mounted.
  • pawl may be provided, which is then arranged counter to the direction of insertion of the socket pivotally mounted in the socket.
  • a mechanical spring element in particular in the form of a helical, conical or spring spring acting as a compression spring, is expediently provided.
  • This spring element is supported within the socket of the corresponding support leg on the one hand on the inner wall and on the other hand on the locking bolt.
  • the spring element is tensioned.
  • One of the plug receptacle on the inside assigned step contour or fold allows complete swinging of the locking bolt in the course of the connector, so that the socket shaft with its free end and its locking contour having shaft portion can pass freely against the inner wall of the plug receptacle pivoted locking bolt.
  • a locking ramp is formed along the locking contour of the plug-in shaft, on which the locking bolt slides in the course of the connector with its free-end side face along in the Riegelend ein.
  • the locking contour is designed such that the locking bolt moves in the course of its pivotal movement into the bolt end position the insertion shaft in the plug-in receptacle in the insertion direction.
  • This effect of self-retraction of the plug shank having carrier leg in the socket of the other carrier leg is achieved by a corresponding design of the locking ramp by these hugs with increasing depth of the ramp to the pivot radius of the locking bar.
  • This effect with a correspondingly controlled pivoting of the locking bolt in its bolt end position is achieved by the spring supported derelement, wherein manually performed relative movements between the two support legs in movements of the insertion shaft having carrier leg result in the insertion direction until the locking bar has reached its Riegelend ein.
  • any existing armrests these are suitably joined via a corresponding plug connection including locking in the course of a manual assembly with the backrest support.
  • this can have a corresponding plug-in receptacle, while then the respective armrest part has a corresponding insertion shank.
  • the backrest can be pivotably coupled to the seat support and suitably additionally the seat surface can be coupled to the seat support in a manner that is synchronous with the backrest.
  • the backrest of a chair preferably an office chair
  • manually mounted in a simple manner to a seat support without tools by means of such a positive connector of a two-part backrest support, wherein the connector between the two corresponding Carrier legs locked automatically.
  • a corresponding tool-free installation of any existing armrests by means of a corresponding connector including locking allows a time-saving and very easy to handle installation of a delivered in appropriate items chair without the need of providing custom or special tools.
  • the locking of the connector is suitably solvable.
  • the access of the locking bolt over the plug-in connection facing the receptacle-side plug-in opening is suitably carried out via a corresponding, preferably substantially smaller, unlocking opening within the plug-in shaft and there in the region of the locking contour, in particular in the region of its installation ramp to which the locking bolt bears in its latch end position.
  • FIG. 1 is a schematic side view of an office chair with joined support legs of a backrest support
  • FIG. 3 in a representation according to FIG. 2, the plug connection of the carrier limbs of the backrest carrier in the locked position of insertion
  • FIG. 4 is a representation according to Figures 1 and 2, the locked connector of the two carrier legs with pivoted in locking position locking latch,
  • FIG. 6 in perspective detail view of the design form according to
  • FIG. 5 with a view into the plug-in receptacle of the seat carrier-side support leg
  • Fig. 7 in perspective detail view of the design form according to
  • FIG. 8 is a schematic side view of an office chair according to FIG. 1 with a
  • FIGS. 1 and 8 are front views of an office chair according to FIGS. 1 and 8 with armrests joined in corresponding plug connections including locking.
  • an office chair 1 is shown schematically in a side view.
  • the office chair 1 has a seat or a seat 2 and a backrest 3 and is supported by a chair column 4 by a base frame, not shown.
  • the office chair 1 may further comprise armrests, not shown, which form a functional unit with the backrest 3.
  • a synchronous mechanism can be provided in a manner not shown, which allows a synchronous co-movement of the seat 2 in the course of an inclination of the backrest 3 to the rear.
  • the backrest support 5 is approximately or approximately L-shaped with a vertical L-leg 5a and extending approximately horizontally under the seat 2 extending L-leg 5b. In the hatched, partially cut transition region of the two L-limbs 5a, 5b, the backrest support 5 is formed in two parts to form a seat-carrier-side (first) support leg 8 and a back-side (second) support leg 9. The two carrier legs 8, 9 are joined in a positive plug connection 10 and locked in this by means of a locking bolt 11.
  • the seat carrier-side carrier limb 8 has a plug-in receptacle 12 on, in which the locking bolt 11 is pivotally arranged with the hinge end in a pivot bearing 13.
  • a spring element 14 is likewise arranged within the plug receptacle 12 and is supported there on the one hand on an inner wall 15 of the plug receptacle 12 facing the seat surface 2 and on the other hand on the locking bolt 11.
  • the locking bolt 11 is located with its joint end in the region of a stepped contour 16 within the socket 12 such that the locking bolt 11 in the swung-in state shown in Figure 3 with a Einschubwandung 17 between an insertion opening 18 and the pivot bearing 13 of the aligned.
  • the pivoted-in locking latch 11 releases the plug-in receptacle 12, that is to say a corresponding plug-in channel within the plug-in receptacle 12 of the seat-carrier-side support leg 8.
  • the back-side support leg 9 of the backrest support 5 has a plug-in shaft 19 on the outer side, whose outer diameter is adapted to the inside width of the plug-in receptacle 12 of the back-side support leg 8 for producing a positive connection in the connector 10.
  • Within the plug-in shaft 19 is on the locking bolt 11 side facing a locking contour
  • the locking ramp 22 rises in the insertion direction 21 suitably circular arc or falls against the insertion direction 21 shown to the ramp bottom 23 down.
  • the locking bolt 11 is pivoted in its Einschwenkposition shown in Figure 3.
  • the plug-in shaft 19 is provided with a concave outer contour 24 on the free end.
  • the plug-in shaft 19 is increasingly retracted in the insertion direction 21 into the corresponding plug-in receptacle 12 of the corresponding support leg 8.
  • the locking contour 20 and in particular the course of the locking ramp 22 is designed such that the locking bolt 11 moves in the insertion direction 12 in the insertion direction 21 in the course of its pivotal movement into the locking end position the insertion shaft 19.
  • This effect of self-retraction of the plug-in shaft 19 having support leg 9 in the socket 12 of the other support leg 8 is achieved by a corresponding circular arc-shaped configuration of the locking ramp 22 by these conforms with increasing ramp depth to the pivot radius Rn of the locking bar 11.
  • FIG. 4 The circles associated with the pivoting radius R11 of the locking bolt 11 and the circle with the radius of curvature R 2 2 associated with the circular arc of the circular-arc blocking ramp 22 are illustrated in FIG. 4. Visible are the circle centers of the circles with the radii Rn and R22 spaced from each other with the described sequence that the insertion shaft 19 in the course of the sliding along the Freiendes 26 of the locking bar 11 on the locking ramp 22 of the insertion shaft 19 of the support leg 9 increasingly into the corresponding receptacle 12 of the Carrier leg 8 is fed.
  • This effect with a correspondingly controlled pivoting of the locking bolt 11 is supported by the spring element 14. This results in relative movements between the two support legs 8, 9 in movements of the insertion shaft 19 having the support leg 9 in the insertion direction 21 until the locking bar 11 has reached its Riegelend ein.
  • Figures 5 to 7 show a concrete structural design of the two-part backrest support 5 with its seat carrier side support leg 8 and its reclining side support leg 9 in a preposition of the connector 10 between the insertion shaft 19 and the socket 12 of the respective support leg 9 and 8. Visible is the locking contour 20 in the exemplary embodiment by, for example, two mutually spaced struts 20a, 20b. to which in each case the installation ramp 21 and the blocking ramp 22 are formed.
  • Fig. 6 shows a view into the plug-in receptacle 12 of the seat carrier-side support leg 8. It can be seen here the plate-shaped locking bolt 11 is shown in its swung-out position shown in FIG.
  • the step contour 16, behind which the locking bolt 11 pivots in the course of the production of the connector 10 against the inner wall 15 of the socket 12 is here provided by a rod-shaped or strut-shaped mold element 27, which on the corresponding inner wall 15 of the socket 12 of the seat carrier side support leg. 8 is formed.
  • an access opening 29 is introduced for a tool by means of which the connector 10 between the two support legs 8 and 9 of the backrest support 5 can be unlocked.
  • the plug-in receptacle 12 may also be provided on the backrest-side support leg 9 and accordingly the insertion shaft 19 on the seat-support-side support leg 8.
  • the locking bar 11 may be formed as a locking hooks, which is shown in relation to FIG. 2 opposite plug-in direction 21 obliquely in its initial position to turn in the production of the connector 10 against the inner wall 15 and against the insertion wall 17 of the socket Dodge 12 and to slide with appropriate hitching end with the tail end of the locking ramp 22 against the ramp floor 23.
  • the effect of Disein convinceds the insertion shaft 19 is achieved in the corresponding socket 12.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)

Abstract

The invention relates to a chair (1), in particular an office chair, comprising a backrest (3) that is coupled to a seat support (7) via a backrest support (5), and a seat pan (2). In order to be able to assemble the chair without using tools, the backrest support (5) is composed of two parts, i.e. a first support leg (8) associated with the seat support (7) and a second support leg (9) which is associated with the backrest (3), is joined to the first support leg (8), which is associated with the seat support, in a form-fitting plug-in connection (10), and is locked therein.

Description

Beschreibung  description
Stuhl, insbesondere Bürostuhl  Chair, especially office chair
Die Erfindung betrifft einen Stuhl, insbesondere einen Bürostuhl, mit einer über einen Lehnenträger an einen Sitzträger gekoppelten Rückenlehne und mit einer Sitzfläche sowie gegebenenfalls mit zwei Armlehnen. The invention relates to a chair, in particular an office chair, with a backrest coupled to a seat support via a backrest support and with a seat surface and optionally with two armrests.
Ein moderner Bürostuhl, wie ein solcher beispielsweise aus der DE 20 2005 017 321 U1 und aus der DE 101 22 945 A1 bekannt ist, umfasst üblicherweise einen auf einer Stuhlsäule ruhenden Sitzträger, an den ein Lehnenträger für eine Rückenlehne mechanisch schwenkbeweglich gekoppelt ist. Eine entsprechende, insbesondere federbeaufschlagte Schwenkmechanik ermöglicht eine Neigung der Rückenlehne nach hinten entgegen einer beispielsweise einstellbaren Federrück- stellkraft. Gegebenenfalls vorhandenen Armlehnen sind daher in der Regel an den Lehnenträger angebunden, um gemeinsam mit der Rückenlehne eine Neigungsbewegung zu vollführen. A modern office chair, such as is known, for example, from DE 20 2005 017 321 U1 and from DE 101 22 945 A1, usually comprises a seat support resting on a chair column, to which a backrest support for a backrest is mechanically pivotably coupled. A corresponding, in particular spring-loaded pivot mechanism allows the backrest to tilt backwards against, for example, an adjustable spring return force. If necessary, existing armrests are therefore usually connected to the backrest support to perform together with the backrest a tilting movement.
Ein solcher Bürostuhl ist des Weiteren üblicherweise durch entsprechende Ausbildung der Stuhlsäule höhenverstellbar und über Rollen, die an sternförmig angeordneten Auslegerarmen gehalten sind, in leichtgängiger Weise verschiebbar. Häufig ist ein derartiger Bürostuhl auch mit einer Synchronmechanik versehen, die eine synchrone Bewegung der Sitzfläche mit der Rückenlehne ermöglicht. Such an office chair is further usually adjustable in height by appropriate design of the chair column and on rollers, which are held on star-shaped boom arms, slidably in a smooth manner. Frequently, such an office chair is also provided with a synchronous mechanism, which allows a synchronous movement of the seat with the backrest.
Der Erfindung liegt die Aufgabe zugrunde, einen derartigen Bürostuhl derart montierbar zu gestalten, dass dieser raumsparend transportiert und/oder gelagert werden kann. The invention has for its object to make such an office chair mountable so that it can be transported and / or stored to save space.
Diese Aufgabe wird erfindungsgemäß gelöst durch die Merkmale des Anspruchs 1. Vorteilhafte Ausgestaltungen und Weiterbildungen sind Gegenstand der Unteransprüche. This object is achieved by the features of claim 1. Advantageous embodiments and further developments are the subject of the dependent claims.
BESTÄTIGUNGSKOPIE Hierzu ist der erfindungsgemäß Stuhl, insbesondere Bürostuhl, werkzeuglos montierbar gestaltet, indem besonders bevorzugt der Lehnenträger zweiteilig unter Bildung zweiter Trägerschenkel ausgebildet ist, die im Zuge der Montage in einer formschlüssigen Steckverbindung gefügt und in dieser verriegelt sind. Zusätzlich oder alternativ können gegebenenfalls vorhandene Armlehnen ebenfalls in einer entsprechenden formschlüssigen Steckverbindung mit dem Lehnenträger gefügt und in dieser Steckverbindung verriegelt sein. CONFIRMATION COPY For this purpose, the chair according to the invention, in particular office chair, designed to be mounted without tools by particularly preferably the backrest support is formed in two parts forming second support legs, which are joined in the course of assembly in a positive connection and locked in this. Additionally or alternatively, any existing armrests may also be joined in a corresponding positive plug-in connection with the backrest support and locked in this connector.
Hinsichtlich der Füge- oder Steckverbindung des zweiteiligen Lehnenträgers ist dieser aus einem dem Sitzträger zugeordneten ersten Trägerschenkel und einem der Rückenlehne zugeordneten zweiten Trägerschenkel gebildet, wobei der lehnenseitige (zweite) Trägerschenkel mit dem sitzträgerseitigen (ersten) Trägerschenkel in der formschlüssigen Steckverbindung im Zuge des Fügevorgangs verriegelt. Hierzu weist geeigneterweise einer der Trägerschenkel fügeseitig eine schacht- oder buchsenartige Steckaufnahme und der andere Trägerschenkel fügeseitig einen korrespondierenden Steckschaft auf. With regard to the joining or plug connection of the two-part backrest support, this is formed from a first support leg assigned to the seat support and a second support leg assigned to the backrest, the back side (second) support leg being locked to the seat support side (first) support leg in the positive plug connection in the course of the joining operation , For this purpose, suitably one of the carrier legs on the plug side a shaft or socket-like plug-in receptacle and the other carrier leg on the plug side a corresponding plug-in shaft.
Die Verriegelung der beiden Trägerschenkel miteinander erfolgt in vorteilhafter Ausgestaltung mittels eines Sperrriegels, der innerhalb der Steckaufnahme drehbeweglich angeordnet und dabei, vorzugsweise in Steckrichtung des Steckschafts des entsprechenden Trägerschenkels, schwenkbewegbar angeordnet ist. Alternativ kann Sperrhaken vorgesehen sein, der dann entgegen der Steckrichtung des Steckschafts schwenkbeweglich in der Steckaufnahme angeordnet ist. The locking of the two carrier legs together is carried out in an advantageous embodiment by means of a locking bolt, which is rotatably disposed within the socket and thereby, preferably in the insertion direction of the socket of the corresponding support leg, pivotally mounted. Alternatively, pawl may be provided, which is then arranged counter to the direction of insertion of the socket pivotally mounted in the socket.
Zur Erhöhung der Kraft, mit welcher der Sperrriegel im Zuge der Steck- beziehungsweise Fügeverbindung in dessen Verriegelungsstellung verschwenkt, ist zweckmäßigerweise ein mechanisches Federelement, insbesondere im Form einer als Druckfeder wirksamen Schrauben-, Kegel- oder Sprungfeder, vorgesehen. Dieses Federelement stützt sich innerhalb der Steckaufnahme des entsprechenden Trägerschenkels einerseits an deren Innenwand und andererseits am Sperrriegel ab. Im Zuge des Steckvorgangs, bei welchem der Sperrriegel mittels des Steckschaftfreiendes verschwenkt wird, wird das Federelement gespannt. Sobald der Steckschaft des entsprechenden Trägerschenkels eine bestimmte Sollposition innerhalb der Steckaufnahme des anderen Trägerschenkels erreicht hat, verschwenkt der Sperrriegel - gegebenenfalls unterstützt durch die Rückstellkraft des Federelements - in eine steckschaftseitige Verriegelungskontur. Eine der Steckaufnahme innenseitig zugeordnete Stufenkontur oder Abkantung ermöglicht ein vollständiges Ausschwenken des Sperrriegels im Zuge der Steckverbindung, so dass der Steckschaft mit dessen Freiende und dessen die Verriegelungskontur aufweisenden Schaftabschnitts den gegen die Innenwandung der Steckaufnahme eingeschwenkten Sperrriegel ungehinderte passieren kann. In order to increase the force with which the locking bolt pivots in the locking position in the course of the plug or joint connection, a mechanical spring element, in particular in the form of a helical, conical or spring spring acting as a compression spring, is expediently provided. This spring element is supported within the socket of the corresponding support leg on the one hand on the inner wall and on the other hand on the locking bolt. In the course of the plug-in process, in which the locking bolt is pivoted by means of the shank free end, the spring element is tensioned. Once the insertion shaft of the corresponding support leg has reached a certain desired position within the socket of the other carrier limb, the locking bolt pivots - possibly supported by the restoring force of the spring element - in a union-side locking contour. One of the plug receptacle on the inside assigned step contour or fold allows complete swinging of the locking bolt in the course of the connector, so that the socket shaft with its free end and its locking contour having shaft portion can pass freely against the inner wall of the plug receptacle pivoted locking bolt.
Zur möglichst reibungsarmen Verschwenkung des Sperrriegels gegen die Innenwandung der Steckaufnahme weist der Steckschaft des entsprechenden Trägerschenkels freiendseitig eine konvexe Außenkontur auf. For low-friction as possible pivoting of the locking bolt against the inner wall of the socket, the insertion shank of the corresponding support leg freiendseitig on a convex outer contour.
Gemäß einer zweckmäßigen Ausgestaltung ist entlang der Verriegelungskontur des Steckschafts eine Sperrrampe ausgebildet, an welcher der Sperrriegel im Zuge der Steckverbindung mit dessen freiendseitiger Stirnfläche entlang in die Riegelendstellung gleitet. Eine geeignete Weiterbildung sieht vor, dass entlang der Verriegelungskontur eine in einen Rampenboden schräg einlaufende Anlagerampe ausgebildet ist, gegen welchen der Sperrriegel im Zuge der Verriegelung ausschwenkt. In diesen Rampenboden läuft auch die Sperrrampe der Verriegelungskontur ein. According to an expedient embodiment, a locking ramp is formed along the locking contour of the plug-in shaft, on which the locking bolt slides in the course of the connector with its free-end side face along in the Riegelendstellung. A suitable further development provides that along the locking contour, an installation ramp running obliquely into a ramp floor is formed, against which the locking bolt pivots in the course of the locking. The locking ramp of the locking contour also enters this ramp floor.
Die Verriegelungskontur ist dabei derart ausgebildet, dass der Sperrriegel im Zuge dessen Schwenkbewegung in die Riegelendstellung den Steckschaft in die Steckaufnahme in Steckrichtung einzieht. Dieser Effekt des Selbsteinziehens des den Steckschaft aufweisenden Trägerschenkels in die Steckaufnahme des anderen Trägerschenkels wird durch eine entsprechende Ausgestaltung der Sperrrampe erzielt, indem sich diese mit zunehmender Rampentiefe an den Schwenkradius des Sperrriegels anschmiegt. Dieser Effekt mit einem entsprechend gesteuerten Verschwenken des Sperrriegels in dessen Riegelendstellung wird durch das Fe- derelement unterstützt, wobei manuell durchgeführte Relativbewegungen zwischen den beiden Trägerschenkeln in Bewegungen des den Steckschaft aufweisenden Trägerschenkels in Steckrichtung resultieren, bis der Sperrriegel dessen Riegelendstellung erreicht hat. The locking contour is designed such that the locking bolt moves in the course of its pivotal movement into the bolt end position the insertion shaft in the plug-in receptacle in the insertion direction. This effect of self-retraction of the plug shank having carrier leg in the socket of the other carrier leg is achieved by a corresponding design of the locking ramp by these hugs with increasing depth of the ramp to the pivot radius of the locking bar. This effect with a correspondingly controlled pivoting of the locking bolt in its bolt end position is achieved by the spring supported derelement, wherein manually performed relative movements between the two support legs in movements of the insertion shaft having carrier leg result in the insertion direction until the locking bar has reached its Riegelendstellung.
Bei gegebenenfalls vorhandenen Armlehnen werden diese geeigneterweise über eine entsprechende Steckverbindung inklusive Verriegelung im Zuge einer manuellen Montage mit dem Lehnenträger gefügt. Hierbei kann dieser eine entsprechende Steckaufnahme aufweisen, während dann das jeweilige Armelehnenteil einen korrespondierenden Steckschaft aufweist. In the case of any existing armrests, these are suitably joined via a corresponding plug connection including locking in the course of a manual assembly with the backrest support. In this case, this can have a corresponding plug-in receptacle, while then the respective armrest part has a corresponding insertion shank.
In vorteilhafter Weiterbildung kann die Rückenlehne an den Sitzträger schwenkbeweglich gekoppelt und geeigneterweise zusätzlich die Sitzfläche synchron mit der Rückenlehne bewegbar an den Sitzträger gekoppelt sein. In an advantageous development, the backrest can be pivotably coupled to the seat support and suitably additionally the seat surface can be coupled to the seat support in a manner that is synchronous with the backrest.
Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, dass mittels einer derartigen formschlüssigen Steckverbindung eines zweiteilig ausgeführten Lehnenträgers die Rückenlehne eines Stuhls, bevorzugt eines Bürostuhls, manuell in einfacher Art und Weise an einen Sitzträger werkzeuglos montiert werden kann, wobei die Steckverbindung zwischen den beiden entsprechenden Trägerschenkeln selbsttätig verriegelt. Eine entsprechende werkzeuglose Montage gegebenenfalls vorhandener Armlehnen mittels einer entsprechenden Steckverbindung inklusive Verriegelung ermöglicht eine zeitsparende und besonders einfach handhabbare Montage eines in entsprechenden Einzelteilen gelieferten Stuhls ohne das Erfordernis der Bereitstellung von üblichen oder speziellen Werkzeugen. The advantages achieved by the invention are, in particular, that the backrest of a chair, preferably an office chair, manually mounted in a simple manner to a seat support without tools by means of such a positive connector of a two-part backrest support, wherein the connector between the two corresponding Carrier legs locked automatically. A corresponding tool-free installation of any existing armrests by means of a corresponding connector including locking allows a time-saving and very easy to handle installation of a delivered in appropriate items chair without the need of providing custom or special tools.
Obwohl eine entsprechende Steckverbindung mit unlösbarer Verriegelung bereits hinsichtlich einer raumsparenden Transportier- und/oder Lagermöglichkeit eines derartigen, in wenigen Einzelteilen bereitgestellten Bürostuhls zweckdienlich erscheint, ist die Verriegelung der Steckverbindung geeigneterweise lösbar. Hierzu ist vorteilhafterweise auf der der Drehachse des Sperrriegels gegenüberliegenden Seite der Steckaufnahme des entsprechenden Trägerschenkels in diesen eine Zugangsöffnung zum Sperrriegel eingebracht. Der Zugang des Sperrriegels über die der aufnahmeseitigen Stecköffnung zugewandten Steckschaftseite innerhalb der Steckverbindung erfolgt geeigneterweise über eine entsprechende, vorzugsweise wesentlich kleiner dimensionierte Entriegelungsöffnung innerhalb des Steckschaftes und dort im Bereich der Verriegelungskontur, insbesondere im Bereich dessen Anlagerampe, an welcher der Sperrriegel in dessen Riegelendstellung anliegt. Although a corresponding connector with permanent lock already appears to be expedient with respect to a space-saving transport and / or storage facility of such, provided in a few items office chair, the locking of the connector is suitably solvable. For this purpose, advantageously on the axis of rotation of the locking bolt opposite side of the plug-in receptacle of the corresponding support leg inserted in this an access opening to the locking bolt. The access of the locking bolt over the plug-in connection facing the receptacle-side plug-in opening is suitably carried out via a corresponding, preferably substantially smaller, unlocking opening within the plug-in shaft and there in the region of the locking contour, in particular in the region of its installation ramp to which the locking bolt bears in its latch end position.
Nachfolgend werden Ausführungsbeispiele der Erfindung anhand einer Zeichnung näher erläutert. Darin zeigen: Embodiments of the invention will be explained in more detail with reference to a drawing. Show:
Fig. 1 in schematischer Seitenansicht einen Bürostuhl mit gefügten Trägerschenkel eines Lehnenträgers, 1 is a schematic side view of an office chair with joined support legs of a backrest support,
Fig. 2 ausschnittsweise den zweiteiligen Lehnenträger in einer Vorsteckposition,  2 shows a detail of the two-part backrest support in a Vorsteckposition,
Fig. 3 in einer Darstellung gemäß Figur 2 die Steckverbindung der Trägerschenkel des Lehnenträgers in verriegelungsloser Steckposition, 3 in a representation according to FIG. 2, the plug connection of the carrier limbs of the backrest carrier in the locked position of insertion, FIG.
Fig. 4 in einer Darstellung gemäß den Figuren 1 und 2 die verriegelte Steckverbindung der beiden Trägerschenkel mit in Verriegelungsposition verschwenktem Sperrriegel, 4 is a representation according to Figures 1 and 2, the locked connector of the two carrier legs with pivoted in locking position locking latch,
Fig. 5 in perspektivischer Teilansicht eine konstruktive Gestaltungsform des  5 is a perspective partial view of a structural design of the
Lehnenträgers in der Vorsteckposition des Steckschafts des lehnen- seitigen Trägerschenkel vor der Steckaufnahme des sitzträgerseitigen Trägerschenkels,  Backrest support in the Vorsteckposition of the socket of the reclining-side support leg in front of the socket of the seat carrier-side support leg,
Fig. 6 in perspektivischer Ausschnittsdarstellung die Gestaltungsform gemäß  Fig. 6 in perspective detail view of the design form according to
Fig. 5 mit Blick in die Steckaufnahme des sitzträgerseitigen Trägerschenkels, und  Fig. 5 with a view into the plug-in receptacle of the seat carrier-side support leg, and
Fig. 7 in perspektivischer Ausschnittsdarstellung die Gestaltungsform gemäß  Fig. 7 in perspective detail view of the design form according to
Fig. 5 mit steckverbundenem und verriegeltem Lehnenträger in einer Unteransicht mit Blick auf eine Entriegelungsöffnung im sitzträgerseitigen Trägerschenkel,  5 with plug-connected and locked backrest carrier in a bottom view with a view of an unlocking opening in the seat carrier-side carrier leg,
Fig. 8 in schematischer Seitenansicht einen Bürostuhl gemäß Fig. 1 mit einer  8 is a schematic side view of an office chair according to FIG. 1 with a
Variante der Steckverbindung mit gefügten Trägerschenkeln des Lehnenträgers, und Fig. 9 in einer Vorderansicht einen Bürostuhl gemäß den Figuren 1 und 8 mit in entsprechenden Steckverbindungen inklusive Verriegelung gefügten Armlehnen. Variant of the connector with joined support legs of the backrest support, and 9 is a front view of an office chair according to FIGS. 1 and 8 with armrests joined in corresponding plug connections including locking.
Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen. Corresponding parts are provided in all figures with the same reference numerals.
In Figur 1 ist in einer Seitenansicht schematisch ein Bürostuhl 1 bezeigt. Der Bürostuhl 1 weist einen Sitz beziehungsweise eine Sitzfläche 2 sowie eine Rückenlehne 3 auf und wird mittels einer Stuhlsäule 4 von einem nicht dargestellten Fußgestell getragen. Der Bürostuhl 1 kann des Weiteren nicht gezeigte Armlehnen aufweisen, die mit der Rückenlehne 3 eine funktionale Einheit bilden. In Figure 1, an office chair 1 is shown schematically in a side view. The office chair 1 has a seat or a seat 2 and a backrest 3 and is supported by a chair column 4 by a base frame, not shown. The office chair 1 may further comprise armrests, not shown, which form a functional unit with the backrest 3.
Ein die Rückenlehne 3 tragender Lehnenträger 5, an welchem gegebenenfalls die Armlehnen steckbar und verriegelbar befestigt sind, ist über ein Drehlager 6 schwenkbar, das heißt nach hinten neigbar an einem Sitzträger 7 montiert. Zwischen dem Lehnenträger 5 und dem Sitzträger 7 kann in nicht näher dargestellter Art und Weise eine Synchronmechanik vorgesehen sein, die eine synchrone Mitbewegung der Sitzfläche 2 im Zuge einer Neigung der Rückenlehne 3 nach hinten ermöglicht. A backrest 3 carrying backrest support 5, to which optionally the armrests are attached pluggable and lockable, is pivotable about a pivot bearing 6, that is mounted rearwardly tiltable on a seat support 7. Between the backrest support 5 and the seat support 7, a synchronous mechanism can be provided in a manner not shown, which allows a synchronous co-movement of the seat 2 in the course of an inclination of the backrest 3 to the rear.
Der Lehnenträger 5 ist in etwa oder annähernd L-förmig mit einem vertikalen L- Schenkel 5a und einem sich etwa horizontal unter die Sitzfläche 2 erstreckenden L-Schenkel 5b ausgeführt. Im schraffierte, teilgeschnittenen Übergangsbereich der beiden L-Schenkel 5a, 5b ist der Lehnenträger 5 unter Bildung eines sitzträ- gerseitigen (ersten) Tragschenkels 8 und eines lehnenseitigen (zweiten) Trägerschenkels 9 zweiteilig ausgebildet. Die beiden Trägerschenkel 8, 9 sind in einer formschlüssigen Steckverbindung 10 gefügt und in dieser mittels eines Sperrriegels 11 verriegelt. The backrest support 5 is approximately or approximately L-shaped with a vertical L-leg 5a and extending approximately horizontally under the seat 2 extending L-leg 5b. In the hatched, partially cut transition region of the two L-limbs 5a, 5b, the backrest support 5 is formed in two parts to form a seat-carrier-side (first) support leg 8 and a back-side (second) support leg 9. The two carrier legs 8, 9 are joined in a positive plug connection 10 and locked in this by means of a locking bolt 11.
Wie in den Figuren 2 bis 4 in vergrößerter Ausschnittsdarstellung des Bereichs der Steckverbindung 10 zwischen den beiden Trägerschenkeln 8 und 9 veranschaulicht, weist der sitzträgerseitige Trägerschenkel 8 eine Steckaufnahme 12 auf, in dem der Sperrriegel 11 mit dessen Gelenkende in einem Drehlager 13 schwenkbeweglich angeordnet ist. Ein Federelement 14 ist ebenfalls innerhalb der Steckaufnahme 12 angeordnet und stützt sich dort einerseits an einer der Sitzfläche 2 zugewandten Innenwand 15 der Steckaufnahme 12 und andererseits am Sperrriegel 11 ab. Der Sperrriegel 11 befindet sich mit dessen Gelenkende im Bereich einer Stufenkontur 16 innerhalb der Steckaufnahme 12 derart, dass der Sperrriegel 11 im in Figur 3 gezeigten eingeschwenkten Zustand mit einer Einschubwandung 17 zwischen einer Einschuböffnung 18 und dem Drehlager 13 des fluchtet. Mit anderen Worten gibt der eingeschwenkte Sperrriegel 11 die Steckaufnahme 12, das heißt einen entsprechenden Steckkanal innerhalb der Steckaufnahme 12 des sitzträgerseitigen Trägerschenkels 8 vollständig frei. As illustrated in FIGS. 2 to 4 in an enlarged detail view of the region of the plug connection 10 between the two carrier limbs 8 and 9, the seat carrier-side carrier limb 8 has a plug-in receptacle 12 on, in which the locking bolt 11 is pivotally arranged with the hinge end in a pivot bearing 13. A spring element 14 is likewise arranged within the plug receptacle 12 and is supported there on the one hand on an inner wall 15 of the plug receptacle 12 facing the seat surface 2 and on the other hand on the locking bolt 11. The locking bolt 11 is located with its joint end in the region of a stepped contour 16 within the socket 12 such that the locking bolt 11 in the swung-in state shown in Figure 3 with a Einschubwandung 17 between an insertion opening 18 and the pivot bearing 13 of the aligned. In other words, the pivoted-in locking latch 11 releases the plug-in receptacle 12, that is to say a corresponding plug-in channel within the plug-in receptacle 12 of the seat-carrier-side support leg 8.
Der lehnenseitige Trägerschenkel 9 des Lehnenträgers 5 weist fügeseitig einen Steckschaft 19 auf, dessen Außendurchmesser an die lichte Weite der Steckaufnahme 12 des lehnenseitigen Trägerschenkels 8 zur Herstellung eines Formschlusses in der Steckverbindung 10 angepasst ist. Innerhalb des Steckschafts 19 ist auf dessen dem Sperrriegel 11 zugewandten Seite eine VerriegelungskonturThe back-side support leg 9 of the backrest support 5 has a plug-in shaft 19 on the outer side, whose outer diameter is adapted to the inside width of the plug-in receptacle 12 of the back-side support leg 8 for producing a positive connection in the connector 10. Within the plug-in shaft 19 is on the locking bolt 11 side facing a locking contour
20 mit einer schräg verlaufenden, d. h. in Steckrichtung 21 schräg abfallenden Anlagerampe 21 und einer Sperrrampe 22 vorgesehen, die mit der Anlagerampe20 with a sloping, d. H. in the direction of insertion 21 obliquely sloping Anlagerampe 21 and a locking ramp 22 is provided with the Anlagerampe
21 im Bereich eines Rampenbodens 23 zusammenläuft. Die Sperrrampe 22 steigt in Steckrichtung 21 geeigneterweise kreisbogenförmig an beziehungsweise fällt entgegen der gezeigten Steckrichtung 21 zum Rampenboden 23 hin ab. 21 converges in the region of a ramp bottom 23. The locking ramp 22 rises in the insertion direction 21 suitably circular arc or falls against the insertion direction 21 shown to the ramp bottom 23 down.
Im Zuge der Herstellung der Steckverbindung 10 zwischen den beiden Trägerschenkeln 8, 9 des zweiteiligen Lehnenträgers 5 gelangt der Steckschaft 19 innerhalb der Steckaufnahme 12 in Anlagekontakt zum Sperrriegel 11. In Folge dessen wird der Sperrriegel 11 in dessen in Figur 3 dargestellte Einschwenkposition verschwenkt. Hierzu ist der Steckschaft 19 freiendseitig mit einer konkaven Außenkontur 24 versehen. Sobald der Steckschaft 19 mit dessen Verriegelungskontur 20 den Sperrriegel 11 vollständig und dabei das dem Rampenboden 23 angewandte Rampenende 25 der Sperrrampe 22 das Freiende 26 des Sperrriegels 11 passiert hat, fällt der Sperrriegel 11 in die keilförmige Verriegelungskontur 20 des Steckschaftes 19 ein. Im Zuge dieser Verschwenkbewegung des Sperrrie- gels 11 gleitet dieser mit dessen Freiende 26 an der Sperrrampe 22 entlang. Dabei schmiegt sich diese mit zunehmender Rampentiefe in Richtung des Rampenbodens 23 an den Schwenkradius des Sperrriegels 11 an. In the course of the production of the connector 10 between the two support legs 8, 9 of the two-part backrest support 5 of the insertion shaft 19 passes within the socket 12 in abutting contact with the locking bolt 11. As a result, the locking bolt 11 is pivoted in its Einschwenkposition shown in Figure 3. For this purpose, the plug-in shaft 19 is provided with a concave outer contour 24 on the free end. Once the plug-in shaft 19 with its locking contour 20, the locking bar 11 has completely passed while the ramp end 23 applied ramp end 25 of the locking ramp 22, the free end 26 of the locking bar 11, the locking bar 11 falls into the wedge-shaped locking contour 20 of the plug shank 19 a. In the course of this pivotal movement of the Sperrrie- gels 11 this slides with its free end 26 of the locking ramp 22 along. It hugs this with increasing depth of the ramp in the direction of the ramp bottom 23 to the pivot radius of the locking bar 11 at.
Zudem wird der Steckschaft 19 zunehmend in Steckrichtung 21 in die korrespondierende Steckaufnahme 12 des entsprechenden Trägerschenkels 8 eingezogen. Die Verriegelungskontur 20 und insbesondere der Verlauf der Sperrrampe 22 ist dabei derart ausgebildet, dass der Sperrriegel 11 im Zuge dessen Schwenkbewegung in die Riegelendstellung den Steckschaft 19 in die Steckaufnahme 12 in Steckrichtung 21 einzieht. Dieser Effekt des Selbsteinziehens des den Steckschaft 19 aufweisenden Trägerschenkels 9 in die Steckaufnahme 12 des anderen Trägerschenkels 8 wird durch eine entsprechende kreisbogenförmige Ausgestaltung der Sperrrampe 22 erzielt, indem sich diese mit zunehmender Rampentiefe an den Schwenkradius R-n des Sperrriegels 11 anschmiegt. Der dem Schwenkradius R11 des Sperrriegels 11 zugeordnete Kreise und der dem Kreisbogen der kreisbogenförmigen Sperrrampe 22 zugehörige Kreis mit dem Krümmungsradius R22 sind in Fig. 4 veranschaulicht. Erkennbar sind die Kreismittelpunkte der Kreise mit den Radien Rn und R22 zueinander beabstandet mit der beschriebenen Folge, dass der Steckschaft 19 im Zuge des Entlanggleitens des Freiendes 26 des Sperrriegels 11 an der Sperrrampe 22 der Steckschaft 19 des Trägerschenkels 9 zunehmend in die korrespondierende Steckaufnahme 12 des Trägerschenkels 8 eingezogen wird. Dieser Effekt mit einem entsprechend gesteuerten Verschwenken des Sperrriegels 11 wird durch das Federelement 14 unterstützt. Dabei resultieren Relativbewegungen zwischen den beiden Trägerschenkeln 8, 9 in Bewegungen des den Steckschaft 19 aufweisenden Trägerschenkels 9 in Steckrichtung 21 , bis der Sperrriegel 11 dessen Riegelendstellung erreicht hat. In addition, the plug-in shaft 19 is increasingly retracted in the insertion direction 21 into the corresponding plug-in receptacle 12 of the corresponding support leg 8. The locking contour 20 and in particular the course of the locking ramp 22 is designed such that the locking bolt 11 moves in the insertion direction 12 in the insertion direction 21 in the course of its pivotal movement into the locking end position the insertion shaft 19. This effect of self-retraction of the plug-in shaft 19 having support leg 9 in the socket 12 of the other support leg 8 is achieved by a corresponding circular arc-shaped configuration of the locking ramp 22 by these conforms with increasing ramp depth to the pivot radius Rn of the locking bar 11. The circles associated with the pivoting radius R11 of the locking bolt 11 and the circle with the radius of curvature R 2 2 associated with the circular arc of the circular-arc blocking ramp 22 are illustrated in FIG. 4. Visible are the circle centers of the circles with the radii Rn and R22 spaced from each other with the described sequence that the insertion shaft 19 in the course of the sliding along the Freiendes 26 of the locking bar 11 on the locking ramp 22 of the insertion shaft 19 of the support leg 9 increasingly into the corresponding receptacle 12 of the Carrier leg 8 is fed. This effect with a correspondingly controlled pivoting of the locking bolt 11 is supported by the spring element 14. This results in relative movements between the two support legs 8, 9 in movements of the insertion shaft 19 having the support leg 9 in the insertion direction 21 until the locking bar 11 has reached its Riegelendstellung.
Die Figuren 5 bis 7 zeigen eine konkrete konstruktive Ausgestaltung des zweiteiligen Lehnenträgers 5 mit dessen sitzträgerseitigem Trägerschenkel 8 und dessen lehnenseitigem Trägerschenkel 9 in einer Vorposition der Steckverbindung 10 zwischen dem Steckschaft 19 und der Steckaufnahme 12 des jeweiligen Trägerschenkels 9 bzw. 8. Erkennbar ist die Verriegelungskontur 20 im Ausführungsbeispiel durch beispielsweise zwei zueinander beabstandete Streben 20a, 20b gebil- det, an welche jeweils die Anlagerampe 21 und die Sperrrampe 22 angeformt sind. Figures 5 to 7 show a concrete structural design of the two-part backrest support 5 with its seat carrier side support leg 8 and its reclining side support leg 9 in a preposition of the connector 10 between the insertion shaft 19 and the socket 12 of the respective support leg 9 and 8. Visible is the locking contour 20 in the exemplary embodiment by, for example, two mutually spaced struts 20a, 20b. to which in each case the installation ramp 21 and the blocking ramp 22 are formed.
Fig. 6 zeigt einen Blick in die Steckaufnahme 12 des sitzträgerseitigen Trägerschenkels 8. Erkennbar ist der hier plattenförmige Sperrriegel 11 in dessen ausgeschwenkter Position gemäß Fig. 2 gezeigt. Die Stufenkontur 16, hinter welcher der Sperrriegel 11 im Zuge der Herstellung der Steckverbindung 10 gegen die Innenwandung 15 der Steckaufnahme 12 einschwenkt, ist hier von einem stab- oder strebenförmigen Formelement 27 bereitgestellt, welches an die entsprechende Innenwand 15 der Steckaufnahme 12 des sitzträgerseitigen Tragschenkels 8 angeformt ist. In die dieser Innenwand 15 und der Einschubwandung 17 gegenüberliegenden Innenwand 28 der Steckaufnahme 12 ist eine Zugangsöffnung 29 für ein Werkzeug eingebracht, mittels dessen die Steckverbindung 10 zwischen den beiden Trägerschenkeln 8 und 9 des Lehnenträgers 5 entriegelt werden kann. Fig. 6 shows a view into the plug-in receptacle 12 of the seat carrier-side support leg 8. It can be seen here the plate-shaped locking bolt 11 is shown in its swung-out position shown in FIG. The step contour 16, behind which the locking bolt 11 pivots in the course of the production of the connector 10 against the inner wall 15 of the socket 12 is here provided by a rod-shaped or strut-shaped mold element 27, which on the corresponding inner wall 15 of the socket 12 of the seat carrier side support leg. 8 is formed. In this inner wall 15 and the insertion wall 17 opposite inner wall 28 of the socket 12 an access opening 29 is introduced for a tool by means of which the connector 10 between the two support legs 8 and 9 of the backrest support 5 can be unlocked.
In der in Fig. 7 gezeigten verriegelten Steckverbindung 10 zwischen den beiden Trägerschenkeln 8 und 9 des Lehnenträgers 5 ist der Steckschaft 19 im Bereich der stegartigen Ausgestaltung dessen Verriegelungskontur 20 über die Zugangsöffnung 28 zugänglich. Dabei ist zwischen den Stegen 20a, 20b, die gemeinsam auf der gegenüberliegenden Seite die Verriegelungskontur 19 bilden, eine spalt- oder schlitzförmige Entriegelungsöffnung 30 gebildet, über welche mittels eines Werkzeugs der Sperrriegel 11 zugänglich und in dessen in Fig. 3 gezeigte Entriegelungsposition manuell verschwenkbar ist. Ist die Steckverbindung 10 auf diese Art und Weise entriegelt, so dass die Lehne 3 zusammen mit dem lehnensei- tigen Trägerschenkel 9 vom sitzträgerseitigen Trägerschenkel 8 gelöst werden kann. In the locked connector 10 shown in Fig. 7 between the two support legs 8 and 9 of the back support 5 of the insertion shaft 19 in the web-like configuration of its locking contour 20 via the access opening 28 is accessible. In this case, between the webs 20a, 20b, which together form the locking contour 19 on the opposite side, a gap or slot-shaped unlocking opening 30 is formed, via which by means of a tool, the locking bolt 11 is accessible and in its unlocking position shown in Fig. 3 is manually pivotable , If the connector 10 is unlocked in this manner, so that the backrest 3 can be released together with the backrest side support leg 9 from the seat carrier side support leg 8.
Die Erfindung ist nicht auf die vorstehend beschriebenen Ausführungsbeispiele beschränkt. Vielmehr können auch andere Varianten der Erfindung von dem Fachmann hieraus abgeleitet werden, ohne den Gegenstand der Erfindung zu verlassen. Insbesondere sind ferner alle im Zusammenhang mit den Ausführungsbeispielen beschriebene Einzelmerkmale auch auf andere Weise miteinander kombinierbar, ohne den Gegenstand der Erfindung zu verlassen. Beispielsweise kann gemäß der in Fig. 8 gezeigten Variante die Steckaufnahme 12 auch am lehnenseitigen Trägerschenkel 9 und dementsprechend der Steckschaft 19 am sitzträgerseitigen Trägerschenkel 8 vorgesehen sein. The invention is not limited to the embodiments described above. Rather, other variants of the invention can be derived therefrom by the person skilled in the art without departing from the subject matter of the invention. In particular, all individual features described in connection with the exemplary embodiments are also combinable with one another in other ways, without leaving the subject matter of the invention. For example, according to the variant shown in FIG. 8, the plug-in receptacle 12 may also be provided on the backrest-side support leg 9 and accordingly the insertion shaft 19 on the seat-support-side support leg 8.
Zudem kann der Sperrriegel 11 auch als Sperrhacken ausgebildet sein, der in bezüglich der Fig. 2 entgegengesetzter Steckrichtung 21 in dessen Ausgangsposition schräg verlaufend ausgestellt ist, um im Zuge der Herstellung der Steckverbindung 10 wiederum gegen die Innenwand 15 bzw. gegen die Einschubwandung 17 der Steckaufnahme 12 auszuweichen und bei entsprechender Steckpositionierung mit dessen Hackenende an der Sperrrampe 22 entlang gegen den Rampenboden 23 zu gleiten. Hierdurch wird wiederum der Effekt des Selbsteinziehens des Steckschaftes 19 in die korrespondierende Steckaufnahme 12 erzielt. In addition, the locking bar 11 may be formed as a locking hooks, which is shown in relation to FIG. 2 opposite plug-in direction 21 obliquely in its initial position to turn in the production of the connector 10 against the inner wall 15 and against the insertion wall 17 of the socket Dodge 12 and to slide with appropriate hitching end with the tail end of the locking ramp 22 against the ramp floor 23. As a result, in turn, the effect of Selbsteinziehens the insertion shaft 19 is achieved in the corresponding socket 12.
Des Weiteren können bei einem Bürostuhl 1 , der gemäß Fig. 9 mit Armlehnen 31 versehen ist, diese ebenfalls mit einer gleichartigen Steckverbindung 10' inklusive Verriegelung mittels eines entsprechenden, vorzugsweise mit einem Federelement 14' unterstützten, Sperrigels 11 ' an den Lehnenträger 5 werkzeuglos montiert werden. Furthermore, in the case of an office chair 1 which is provided with armrests 31 according to FIG. 9, these are likewise mounted to the backrest support 5 with a similar plug connection 10 'including locking by means of a corresponding blocking element 11' supported preferably with a spring element 14 ' become.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
1 Stuhl/Bürostuhl Innenwandung1 chair / office chair inside wall
2 Sitzfläche Zugangsöffnung2 seat access opening
3 Rückenlehne Entriegelungsöffnung3 backrest unlocking opening
4 Stuhlsäule Armlehne 4 chair column armrest
5 Lehnenträger  5 backrests
5a vertikaler L-Schenkel  5a vertical L-leg
5b horizontaler L-Schenkel  5b horizontal L-leg
6 Drehlager  6 pivot bearings
7 Sitzträger  7 seat carrier
8 sitzträgerseitiger Trägersehenkel  8 seat carrier side Trägerlegekel
9 lehnenseitiger Trägerschenkel  9 lean side carrier leg
10 Steckverbindung  10 plug connection
11 Sperrriegel  11 locking bolt
12 Steckaufnahme  12 plug-in receptacle
13 Drehlager  13 pivot bearings
14 Federelement  14 spring element
15 Innenwand  15 inner wall
16 Stufenkontur  16 step contour
17 Einschubwandung  17 insertion wall
18 Einschuböffnung  18 insertion opening
19 Steckschaft  19 shank
20 Verriegelungskontur  20 locking contour
20a ,b Strebe 20a, b strut
21 Anlagerampe  21 investment lamp
22 Sperrrampe  22 locking ramp
23 Rampenboden  23 ramp floor
24 Außenkontur  24 outer contour
25 Rampenende  25 ramp end
26 Freiende  26 free
27 Formelement  27 mold element

Claims

Ansprüche claims
1. Suhl (1 ), insbesondere Bürostuhl, mit einer über einen Lehnenträger (5) an einen Sitzträger (7) gekoppelten Rückenlehne (3) und mit einer Sitzfläche (2), 1. Suhl (1), in particular office chair, with a backrest (3) coupled to a seat support (7) via a backrest support (5) and having a seat surface (2),
dadurch gekennzeichnet,  characterized,
dass der Lehnenträger (5) zweiteilig mit einem dem Sitzträger (7) zugeordneten sitzträgerseitigen (ersten) Trägerschenkel (8) und mit einem der Rückenlehne (3) zugeordneten lehnenseitigen (zweiten) Trägerschenkel (9) ausgebildet ist, der mit dem sitzträgerseitigen Trägerschenkel (8) in einer formschlüssigen Steckverbindung (10) gefügt und in dieser verriegelt ist.  in that the backrest support (5) is formed in two parts with a seat carrier (8) assigned to the seat support (7) and with a backrest (9) associated with the backrest (3), which is connected to the seat support side support leg (8 ) is joined in a positive plug connection (10) and locked in this.
2. Stuhl (1 ) nach Anspruch 1 , 2. chair (1) according to claim 1,
dadurch gekennzeichnet,  characterized,
dass einer der Trägerschenkel (8, 9) fügeseitig einen Steckaufnahme (12) und der andere Trägerschenkel (9, 8) fügeseitig einen Steckschaft (19) aufweist.  in that one of the carrier legs (8, 9) has a plug-in receptacle (12) on the plug side and the other carrier leg (9, 8) has a plug-in shaft (19) on the plug-side.
3. Stuhl (1 ) nach Anspruch 2, 3. chair (1) according to claim 2,
dadurch gekennzeichnet,  characterized,
dass innerhalb der Steckaufnahme (12) ein, insbesondere in Steckrichtung (21 ) verschwenkbarer, Sperrriegel (11 ) drehbeweglich angeordnet ist.  in that a locking bolt (11) which is pivotable, in particular in the plug-in direction (21), is rotatably mounted inside the plug-in receptacle (12).
4. Stuhl (1 ) nach Anspruch 3, 4. chair (1) according to claim 3,
dadurch gekennzeichnet,  characterized,
dass innerhalb der Steckaufnahme (12) ein sich einerseits an deren Innenwand (15) und andererseits am Sperrriegel (11 ) abstützendes Federele- ment (14) angeordnet ist, gegen dessen Rückstellkraft der Sperrriegel (11 ) im Zuge der Steckverbindung (21 ) verschwenkt. in that inside the plug-in receptacle (12) there is a spring element which is supported, on the one hand, on its inner wall (15) and, on the other hand, on the locking bolt (11). ment (14) is arranged against the restoring force of the locking bolt (11) pivoted in the course of the plug connection (21).
5. Stuhl (1 ) nach einem der Ansprüche 2 bis 4, 5. Chair (1) according to one of claims 2 to 4,
dadurch gekennzeichnet,  characterized,
dass die Steckaufnahme (10) innenseitig eine eingezogene Stufenkontur (16) aufweist, in welche der Sperrriegel (11 ) im Zuge der Steckverbindung (10) einschwenkt.  that the plug-in receptacle (10) on the inside has a retracted step contour (16) into which the locking bolt (11) pivots in the course of the plug connection (10).
6. Stuhl (1 ) nach einem der Ansprüche 2 bis 5, 6. Chair (1) according to one of claims 2 to 5,
dadurch gekennzeichnet,  characterized,
dass der Steckschaft (19) freiendseitig eine konvexe Außenkontur (24) aufweist.  the plug-in shaft (19) has a convex outer contour (24) on the free end.
7. Stuhl (1 ) nach einem der Ansprüche 3 bis 6, 7. Chair (1) according to one of claims 3 to 6,
dadurch gekennzeichnet,  characterized,
dass der Steckschaft (19) eine Verriegelungskontur (20) aufweist, in welche der Sperrriegel (11 ) im Zuge der Steckverbindung (10) ausschwenkt.  in that the plug-in shaft (19) has a locking contour (20) into which the locking bolt (11) pivots in the course of the plug connection (10).
8. Stuhl (1 ) nach Anspruch 6 oder 7, 8. chair (1) according to claim 6 or 7,
dadurch gekennzeichnet,  characterized,
dass entlang der Verriegelungskontur (20) eine Sperrrampe (22) ausgebildet ist, an welcher im Zuge der Steckverbindung (10) der Sperrriegel (11 ) mit dessen freiendseitiger Stirnfläche (26) entlang in die Riegelendstellung gleitet.  a locking ramp (22) is formed along the locking contour (20), on which in the course of the plug-in connection (10) the locking bolt (11) slides with its free-end face (26) along into the bolt end position.
9. Stuhl (1 ) nach Anspruch 7 oder 8, 9. chair (1) according to claim 7 or 8,
dadurch gekennzeichnet,  characterized,
dass entlang der Verriegelungskontur (20) eine in einen Rampenboden (23) schräg einlaufende Anlagerampe (21 ) ausgebildet ist, gegen welchen der Sperrriegel (11 ) im Zuge der Verriegelung ausschwenkt. that along the locking contour (20) in a ramp bottom (23) obliquely incoming plant lamp (21) is formed, against which the locking bar (11) swings in the course of locking.
10. Stuhl (1 ) nach einem der Ansprüche 7 bis 9, 10. chair (1) according to any one of claims 7 to 9,
dadurch gekennzeichnet,  characterized,
dass die Verriegelungskontur (19) derart ausgebildet ist, dass der Sperrriegel (11 ) im Zuge dessen Schwenkbewegung in die Riegelendstellung den Steckschaft (19) in die Steckaufnahme (12) in Steckrichtung (21 ) einzieht.  in that the locking contour (19) is designed in such a way that the locking bolt (11) retracts the insertion shaft (19) into the plug-in receptacle (12) in the insertion direction (21) in the course of its pivoting movement into the locking end position.
11.Stuhl (1 ) nach einem der Ansprüche 7 bis 10, 11.chair (1) according to one of claims 7 to 10,
dadurch gekennzeichnet,  characterized,
dass die Sperrrampe (22) derart ausgebildet ist, dass sich diese mit zunehmender Rampentiefe an den Schwenkradius des Sperrriegels (11 ) anschmiegt.  in that the blocking ramp (22) is designed in such a way that, as the depth of the ramp increases, it conforms to the pivoting radius of the locking bolt (11).
12. Suhl (1 ), insbesondere Bürostuhl, mit einer über einen Lehnenträger (5) an einen Sitzträger (7) gekoppelten Rückenlehne (3) und mit einer Sitzfläche (3) sowie mit mindestens einer Armlehne (31 ), 12. Suhl (1), in particular office chair, with a backrest (3) coupled to a seat support (7) via a back support (5) and having a seat surface (3) and at least one armrest (31),
dadurch gekennzeichnet,  characterized,
dass die oder jede Armlehne (31 ) mit dem Lehnenträger (5) in einer formschlüssigen Steckverbindung (10') gefügt und in dieser verriegelt ist.  in that the or each armrest (31) is joined to the backrest support (5) in a form-locking plug-in connection (10 ') and locked therein.
13. Stuhl (1 ) nach einem der Ansprüche 1 bis 11 , 13. Chair (1) according to one of claims 1 to 11,
dadurch gekennzeichnet,  characterized,
dass die Rückenlehne (3) an den Sitzträger (7) schwenkbeweglich gekoppelt ist.  the backrest (3) is pivotably coupled to the seat support (7).
14.Stuhl (1 ) nach einem der Ansprüche 1 bis 12, 14.chair (1) according to one of claims 1 to 12,
dadurch gekennzeichnet,  characterized,
dass die Sitzfläche (2) synchron mit der Rückenlehne (3) bewegbar an den Sitzträger (7) gekoppelt ist.  in that the seat surface (2) is coupled to the seat support (7) so as to be movable synchronously with the backrest (3).
EP15711653.4A 2014-03-14 2015-03-04 Chair, in particular office chair Active EP3116348B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014003676.6A DE102014003676A1 (en) 2014-03-14 2014-03-14 Chair, especially office chair
PCT/EP2015/000487 WO2015135632A1 (en) 2014-03-14 2015-03-04 Chair, in particular office chair

Publications (2)

Publication Number Publication Date
EP3116348A1 true EP3116348A1 (en) 2017-01-18
EP3116348B1 EP3116348B1 (en) 2019-12-04

Family

ID=52727067

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Application Number Title Priority Date Filing Date
EP15711653.4A Active EP3116348B1 (en) 2014-03-14 2015-03-04 Chair, in particular office chair

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US (1) US10357110B2 (en)
EP (1) EP3116348B1 (en)
CA (1) CA2942684C (en)
DE (1) DE102014003676A1 (en)
WO (1) WO2015135632A1 (en)

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DE102021214820B4 (en) 2021-12-21 2023-10-19 Sedus Stoll Aktiengesellschaft Connection arrangement and office chair
US11672347B1 (en) * 2022-01-18 2023-06-13 Comfordy Co., Ltd. Chair back and seat assembly

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Also Published As

Publication number Publication date
DE102014003676A1 (en) 2015-09-17
US10357110B2 (en) 2019-07-23
CA2942684A1 (en) 2015-09-17
US20170099951A1 (en) 2017-04-13
WO2015135632A1 (en) 2015-09-17
EP3116348B1 (en) 2019-12-04
CA2942684C (en) 2018-11-06

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