EP0150270B1 - Folding chair - Google Patents

Folding chair Download PDF

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Publication number
EP0150270B1
EP0150270B1 EP84112367A EP84112367A EP0150270B1 EP 0150270 B1 EP0150270 B1 EP 0150270B1 EP 84112367 A EP84112367 A EP 84112367A EP 84112367 A EP84112367 A EP 84112367A EP 0150270 B1 EP0150270 B1 EP 0150270B1
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EP
European Patent Office
Prior art keywords
strut
back portion
front portion
cross
articulated
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
Application number
EP84112367A
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German (de)
French (fr)
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EP0150270A2 (en
EP0150270A3 (en
Inventor
Alexander Härty
Jürgen Lange
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LOGA MOBEL GmbH
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LOGA MOBEL GmbH
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Publication date
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Publication of EP0150270A2 publication Critical patent/EP0150270A2/en
Publication of EP0150270A3 publication Critical patent/EP0150270A3/en
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Publication of EP0150270B1 publication Critical patent/EP0150270B1/en
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C4/00Foldable, collapsible or dismountable chairs
    • A47C4/04Folding chairs with inflexible seats
    • A47C4/18Folding chairs with inflexible seats having a frame made of metal
    • A47C4/20Folding chairs with inflexible seats having a frame made of metal with legs pivotably connected to seat or underframe

Definitions

  • the invention relates to a folding armchair specified in the preamble of claim 1.
  • Such folding armchairs are known (G B-A-215 551).
  • a flexible sheet of textile material or the like is provided, which forms both the seat and a backrest and the two ends of which are each fastened to a crossbar.
  • the two crossbars are used in holders at the upper end of the longer rear part or in holders at the upper end of the shorter front part.
  • Both the two struts for connecting the upper ends of one strut cross to the rear part or to the front part and the two struts for connecting the upper ends of the other strut cross to the back part and the front part respectively extend away from the back part and from the front part beyond the articulated upper crossbar end and are articulated in the middle between the two upper crossbar ends to be pressed into a horizontal, stretched position in which they serve as armrests and rest with their free ends on the two upper crossbar ends as well locked together.
  • the flexible web cannot be tensioned. Toggle linkages are not provided.
  • the prior art also includes folding armchairs with a back or a front part and two rods for the articulated connection of the back and the front on one side or on the other side to one another, the seat being formed by a flexible web of textile material or the like , which is stretched between the back part and the front part, a backrest at the height of the two armrests is rotatably mounted on the back part and the two linkages are arranged below the seat.
  • the two linkages are each formed by a horizontal pair of struts and two struts crossing each other, the pair of struts being articulated with the two outer ends on the rear part or on the front part and its two struts being articulated to one another at the adjacent ends, while the other two struts are each hinged at one end to the lower end of the rear part or the front part and at the other end to the strut articulated on the front part or on the strut articulated on the rear part of the horizontal strut pair and run accordingly at an angle.
  • a further pair of horizontal struts is provided, which extends above the linkage on the relevant side, is also articulated with the two outer ends on the back part and on the front part and has a central joint axis, through the latter a vertical additional strut is articulated to the linkage or the lower pair of horizontal struts at its central hinge axis and forms an armrest (DE-C-488 630).
  • the invention has for its object to provide a folding armchair, which has a simple structure of relatively few, simple components and ensures a high level of seating comfort, in particular can also be designed so that an unimpeded penetration of the user's feet under the seat is possible and a soft back support is imparted to the user, and which is simply together can be folded and unfolded, without any risk of pinching and with an audible click in the unfolded position of use, in the folded position only requires a small amount of space and in the unfolded position of use is exceptionally stable, in particular can also be moved without the risk of collapsing .
  • the folding chair shown consists essentially of a back part 1, a front part 2, a seat 3, two armrests 4, two scissor-like movable strut crosses 5, two toggle linkages 6, two pairs of struts 7, 8 and a backrest 9.
  • the back part 1 is designed as a flat frame with two mutually parallel, elongated supports 10 and 11 which are fastened to one another by two mutually parallel cross bars 12 and 13.
  • the shorter front part 2 is also designed as a flat frame with two mutually parallel, elongated supports 14 and 15, which are fastened to one another by a cross bar 16.
  • the two frames each have an H-shaped shape.
  • the seat 3 is formed by a flexible web 17 which, when the folding chair according to FIGS. 1 and 2 is in use, extends transversely and approximately horizontally between the back part 1 which is approximately perpendicular to the floor and the front part 2 which is also approximately perpendicular to the floor, expediently under a slight tension.
  • the two ends of the flexible web 17 are each attached to the lower crossbar 13 of the rear part 1 and to the crossbar 16 of the front part 2.
  • the backrest 9 also consists of a flexible web 18 which is stretched between two resilient legs 19 and 20 of two V-shaped brackets 21 and 22, the two legs 19 and 20 being received in two transverse loops at the two ends of the flexible web 18 can.
  • the two brackets 21 and 22 are each gripped by an inner pin 23 or 24 at the free upper end of the adjacent support 10 or 11 of the back part 1 and fixed with the other leg 25 on the back part 1, so that the two resilient legs 19 and 20 to project obliquely downward from the associated inner pin 23 or 24 and onto the front part 2, as can be seen in FIG. 2, and in the use position of the folding armchair there is a soft back support for the user as a whole.
  • the two scissor-like movable strut crosses 5 each consist of two struts 26 and 27 of equal length, which are pivotally connected to one another about an axis 28 parallel to the transverse rods 12, 13 and 16.
  • the two struts 26 and 27 are each pivotably pivoted about an axis 29 or 30 parallel to the axis 28 at the lower end of the rear part 1 or the front part 2, specifically with a strut cross 5 on one side of the folding chair and at another strut cross 5 on the other side of the folding chair, that is, on the inside of the lower ends of the two elongated supports 10 and 14 of different lengths or the two elongated supports 11 and 15 of different lengths.
  • each strut cross 5 or the two struts 26 and 27 of the same are through a strut 8 or a strut 7 with the upper end of the front part 2 or with the back part 1 on its upper crossbar 12 on the respective side of the folding chair articulated.
  • Each strut 7 is pivoted about two axes 31 and 32 parallel to the axis 28 on the inside of the adjacent support 10 or 11 of the rear part 1 or on the outside of the upper end of the strut 27 of the associated strut cross 5.
  • Each strut 8 is also pivoted about two axes 33 and 34 parallel to the axis 28 on the inside of the adjacent support 14 or 15 of the front part 2 or on the outside of the upper end of the strut 26 of the associated strut cross 5.
  • the two toggle linkages 6 are each provided between the two upper ends of the one or the other strut cross 5 or the two axes 32 and 34 of the two struts 26 and 27 thereof in order to secure the two strut crosses 5 in the unfolded use position of the folding chair according to FIG. Keep 1 and 2 spread.
  • Each toggle linkage 6 consists of a longer first strut 35 and a shorter second strut 36, each pivotable at one end about the axis 34 or about the axis 32 inside at the upper end of the strut 26 of the associated strut cross 5 or outside at the upper end the strut 27 of the associated strut cross 5 are articulated.
  • the shorter second strut 36 is about an axis 37 parallel to the axis 28 pivoted on the outside of the longer first strut 35, approximately in the middle thereof.
  • the longer first strut 35 supports the armrest 4 on the relevant side of the folding chair.
  • each toggle linkage 6 in the illustrated depressed position of each toggle linkage 6, the common hinge axis 37 of the first strut 35 and the second strut 36 thereof lies below the connecting line of the two hinge axes 34 and 32 between the two upper ends of the associated strut cross 5 and the first or second strut 35 or 36 and the longer first strut 35 rests with its free end 38 on the upper end of the associated strut cross 5 or strut 27 thereof, on which the second strut 36 is pivotable about the axis 32 is articulated.
  • the folding armchair is very easy to operate. To fold it up, it is sufficient to grasp the two armrests 4 and pull them up so that the two middle struts 35 pivot upwards about their two axes 34 and the two toggle linkages 6 fold up, the tension mentioned in the flexible web 17 having to be overcome, which rises until the three hinge axes 32, 34 and 37 of each toggle linkage 6 lie on the same straight line and then falls again. After this extended position of the two toggle linkages 6 has been exceeded, the back part 1 on the one hand and the front part 2 and the armrests 4 on the other hand can be completely folded against one another via the intermediate position according to FIG. 3, as shown in FIG. 4, after the backrest 9 has been removed beforehand. In this folded position, the folding armchair takes up very little space. As can be seen from FIG. 4, the maximum width corresponds approximately to twice the width of the carriers 10, 11, 14 and 15 of the same width.
  • the folding armchair is very comfortable. Based on the described shape of the H-shaped frame-menarti g en front part 2, the user can freely Tekken his feet under the seat. 3
  • the backrest 9 inserted after the folding armchair is folded into the use position in the back part 1 is a very pleasant back support for the user because it is soft and flexible on the whole and the user with his back in contact with no cross strut or crossbar of the back part 1 is coming.
  • the folding armchair is characterized by a very simple structure made up of relatively few, simple components. While the two V-shaped brackets 21 and 22 are preferably made of spring steel and the two flexible tracks 17 and 18 are preferably made of textile material, the other components, apart from the axes mentioned, can be made of wood or plastic, for example.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Special Chairs (AREA)
  • Chairs Characterized By Structure (AREA)

Description

Die Erfindung bezieht sich auf einen Klappsessel der im Oberbegriff des Patentanspruchs 1 angegebenen Art.The invention relates to a folding armchair specified in the preamble of claim 1.

Derartige Klappsessel sind bekannt (G B-A-215 551 ). Dabei ist eine flexible Bahn aus textilem Material oder dergleichen vorgesehen, welche sowohl den Sitz als auch eine Rückenlehne bildet und deren beide Enden jeweils an einer Querlatte befestigt sind. Die beiden Querlatten werden jeweils in Halter am oberen Ende des längeren Rückteils bzw. in Halter am oberen Ende des kürzeren Vorderteils eingesetzt. Sowohl die beiden Streben zur Verbindung der oberen Enden des einen Strebenkreuzes mit dem Rückteil bzw. mit dem Vorderteil als auch die beiden Streben zur Verbindung der oberen Enden des anderen Strebenkreuzes mit dem Rückteil bzw. dem Vorderteil erstrecken sich jeweils vom Rückteil bzw. vom Vorderteil weg über das angelenkte obere Strebenkreuzende hinaus und sind in der Mitte zwischen den beiden oberen Strebenkreuzenden gelenkig miteinander verbunden, um in eine horizontale, gestreckte Stellung gedrückt werden zu können, in welcher sie als Armlehne dienen und mit ihren freien Enden an den beiden oberen Strebenkreuzenden anliegen sowie miteinander verriegelt werden. Die flexible Bahn kann nicht gespannt werden. Kniehebelgestänge sind nicht vorgeshen.Such folding armchairs are known (G B-A-215 551). A flexible sheet of textile material or the like is provided, which forms both the seat and a backrest and the two ends of which are each fastened to a crossbar. The two crossbars are used in holders at the upper end of the longer rear part or in holders at the upper end of the shorter front part. Both the two struts for connecting the upper ends of one strut cross to the rear part or to the front part and the two struts for connecting the upper ends of the other strut cross to the back part and the front part respectively extend away from the back part and from the front part beyond the articulated upper crossbar end and are articulated in the middle between the two upper crossbar ends to be pressed into a horizontal, stretched position in which they serve as armrests and rest with their free ends on the two upper crossbar ends as well locked together. The flexible web cannot be tensioned. Toggle linkages are not provided.

Bekannt ist es auch, bei ähnlichen Klappsesseln mit entsprechender Ausbildung von Sitz und Rückenlehne sowie der beiden Armlehnen statt zweier scherenartig beweglicher Strebenkreuze auf jeder Seite des Rückteils und des Vorderteils jeweils ein zweites, unteres Strebenpaar vorzusehen, dessen beide äussere Enden ebenfalls jeweils am Rückteil bzw. am Vorderteil angelenkt sind und dessen beide Streben gleichfalls an den beiden einander benachbarten Enden gelenkig miteinander verbunden sind, wobei diese beiden Streben mittels je einer weiteren Strebe gelenkig mit der einen bzw. der anderen Strebe des oberen Strebenpaars auf der betreffenden Seite des Rückteils und des Vorderteils verbunden sind, so dass jede zusätzliche Strebe und das Rückteil bzw. das Vorderteil zusammen mit den beiden damit oben bzw. unten gelenkig verbundenen Streben ein Parallelogrammgestänge bilden (DE-C-261 236).It is also known, in the case of similar folding armchairs with a corresponding design of the seat and backrest and of the two armrests, to provide a second, lower pair of struts on each side of the back part and the front part instead of two scissor-like strut crosses, the two outer ends of which are also each on the back part or are articulated on the front part and the two struts are likewise connected to one another in an articulated manner at the two adjacent ends, these two struts being articulated by means of a further strut each with one or the other strut of the upper strut pair on the relevant side of the back part and the front part are connected so that each additional strut and the rear part or the front part together with the two struts articulated therewith at the top and bottom form a parallelogram linkage (DE-C-261 236).

Zum Stande der Technik gehören ferner Klappsessel mit einem Rückteil oder einem Vorderteil sowie zwei Gestängen zur gelenkigen Verbindung des Rückteils und des Vorderteils an deren einer Seite bzw. an deren anderer Seite miteinander, wobei der Sitz von einer flexiblen Bahn aus textilem Material oder dergleichen gebildet ist, welche zwischen dem Rückteil und dem Vorderteil gespannt wird, am Rückteil eine Rückenlehne in Höhe der beiden Armlehnen drehbar gelagert ist und die beiden Gestänge unterhalb des Sitzes angeordnet sind.The prior art also includes folding armchairs with a back or a front part and two rods for the articulated connection of the back and the front on one side or on the other side to one another, the seat being formed by a flexible web of textile material or the like , which is stretched between the back part and the front part, a backrest at the height of the two armrests is rotatably mounted on the back part and the two linkages are arranged below the seat.

Bei einer Ausführungsform mit zwei scherenartig beweglichen Strebenkreuzen als Gestängen sowie einem H-förmigen Rückteil und einem H-förmigen Vorderteil, welche jeweils zwei zueinander parallele Querstangen aufweisen, an den beiden oberen Enden auf der einen Seite sowie an den beiden oberen Enden auf der anderen Seite durch je ein flexibles Band aus textilem Material oder dergleichen zur Bildung einer Armlehne miteinander verbunden sind und gegeneinander geklappt werden können, sind die beiden unteren Enden jedes Strebenkreuzes jeweils am unteren Ende des Rückteils bzw. des Vorderteils angelenkt, während die beiden oberen Enden jedes Strebenkreuzes jeweils durch eine Querstange mit dem entsprechenden oberen Ende des jeweils anderen Strebenkreuzes starr verbunden sind. Diese beiden Querstangen, an denen jeweils das eine bzw. das andere Ende der den Sitz bildenden flexiblen Bahn befestigt ist, kommen innen am Rückteil bzw. am Vorderteil zur Anlage, um sie auseinander zu drücken, soweit dies zwei Zugstrebenpaare zulassen, welche jeweils das Rückteil bzw. das Vorderteil gelenkig mit den beiden Strebenkreuzen verbinden und an letzteren zwischen deren beiden mittleren Drehachsen sowie der am Rückteil bzw. der am Vorderteil nur geringfügig oberhalb der oberen Querstange desselben zur Anlage kommenden Querstange der Strebenkreuze sowie am Rückteil bzw. am Vorderteil zwischen dessen beiden Querstangen angelenkt sind (GB-A-346 410).In one embodiment with two scissor-like movable cross braces as rods and an H-shaped rear part and an H-shaped front part, each of which has two mutually parallel crossbars, on the two upper ends on one side and on the two upper ends on the other side are connected to each other by a flexible band of textile material or the like to form an armrest and can be folded against each other, the two lower ends of each strut cross are each articulated to the lower end of the rear part or the front part, while the two upper ends of each strut cross are rigidly connected by a crossbar to the corresponding upper end of the other strut cross. These two crossbars, to each of which one or the other end of the flexible web forming the seat is attached, come to bear against the inside of the rear part or the front part, in order to push them apart, insofar as this allows two pairs of tension struts, each of which the back part or connect the front part in an articulated manner to the two strut crosses and on the latter between their two central axes of rotation and the crossbar of the strut crosses which comes into contact only slightly above the upper crossbar of the strut crosses on the back part or on the back part or on the back part or on the front part between the two Crossbars are articulated (GB-A-346 410).

Bei einer anderen Ausführungsform sind die beiden Gestänge jeweils von einem horizontalen Strebenpaar und zwei einander kreuzenden Streben gebildet, wobei das Strebenpaar mit den beiden äusseren Enden am Rückteil bzw. am Vorderteil angelenkt ist und seine beiden Streben an den einander benachbarten Enden gelenkig miteinander verbunden sind, während die beiden anderen Streben jeweils mit dem einen Ende am unteren Ende des Rückteils bzw. des Vorderteils und mit dem anderen Ende an der am Vorderteil angelenkten Strebe bzw. an der am Rückteil angelenkten Strebe des horizontalen Strebenpaars angelenkt sind und entsprechend schräg verlaufen. Auf beiden Seiten des Rückteils und des Vorderteils ist jeweils ein weiteres horizontales Strebenpaar vorgesehen, welches sich oberhalb des Gestänges auf der betreffenden Seite erstreckt, ebenfalls mit den beiden äusseren Enden am Rückteil bzw. am Vorderteil angelenkt ist und eine mittlere Gelenkachse aufweist, an letzterer durch eine senkrechte zusätzliche Strebe mit dem Gestänge bzw. dem unteren horizontalen Strebenpaar an dessen mittlerer Gelenkachse gelenkig verbunden ist und eine Armlehne bildet (DE-C-488 630).In another embodiment, the two linkages are each formed by a horizontal pair of struts and two struts crossing each other, the pair of struts being articulated with the two outer ends on the rear part or on the front part and its two struts being articulated to one another at the adjacent ends, while the other two struts are each hinged at one end to the lower end of the rear part or the front part and at the other end to the strut articulated on the front part or on the strut articulated on the rear part of the horizontal strut pair and run accordingly at an angle. On both sides of the rear part and the front part, a further pair of horizontal struts is provided, which extends above the linkage on the relevant side, is also articulated with the two outer ends on the back part and on the front part and has a central joint axis, through the latter a vertical additional strut is articulated to the linkage or the lower pair of horizontal struts at its central hinge axis and forms an armrest (DE-C-488 630).

Der Erfindung liegt die Aufgabe zugrunde, einen Klappsessel zu schaffen, welcher einen einfachen Aufbau aus verhältnismässig wenigen, einfachen Bauelementen aufweist und einen hohen Sitzkomfort gewährleistet, insbesondere auch so ausgestaltet werden kann, dass ein ungehindertes Eindringen der Füsse des Benutzers unter den Sitz möglich ist und eine im ganzen weichnachgiebige Rückenabstützung für den Benutzer vermittelt wird, und welcher ferner einfach zusammen- und auseinanderklappbar ist, und zwar ohne Klemmgefahr und unter hörbarem Einrasten in der auseinandergeklappten Gebrauchsstellung, in der zusammengeklappten Stellung nur einen geringen Platzbedarf hat und in der auseinandergeklappten Gebrauchsstellung aussergewöhnlich stabil ist, insbesondere auch bewegt werden kann, ohne dass die Gefahr eines Zusammenklappens besteht.The invention has for its object to provide a folding armchair, which has a simple structure of relatively few, simple components and ensures a high level of seating comfort, in particular can also be designed so that an unimpeded penetration of the user's feet under the seat is possible and a soft back support is imparted to the user, and which is simply together can be folded and unfolded, without any risk of pinching and with an audible click in the unfolded position of use, in the folded position only requires a small amount of space and in the unfolded position of use is exceptionally stable, in particular can also be moved without the risk of collapsing .

Diese Aufgabe ist durch die im Patentanspruch 1 angegebene Merkmalskombination gelöst. Vorteilhafte Ausgestaltungen des erfindungsgemässen Klappsessels sind in den restlichen Patentansprüchen angegeben.This object is achieved by the combination of features specified in claim 1. Advantageous refinements of the folding armchair according to the invention are specified in the remaining claims.

Die durch den erfindungsgemässen Klappsessel vermittelten Vorteile ergeben sich aus der genannten Aufgabenstellung, ferner aus der folgenden Beschreibung eines Ausführungsbeispiels anhand von Zeichnungen. Darin zeigt schematisch:

  • Fig. 1 die Draufsicht in der auseinandergeklappten Gebrauchsstellung;
  • Fig. 2 den senkrechten Längsschnitt entlang der Linie 11-11 in Fig. 1;
  • Fig. 3 den Längsschnitt gemäss Fig. 2, wobei die Rückenlehne abgenommen ist und der Klappsessel sich in einer Zwischenstellung beim Zusammenklappen befindet;
  • Fig. 4 den Längsschnitt gemäss Fig. 2, wobei die Rückenlehne abgenommen ist und der Klappsessel vollständig zusammengeklappt ist.
The advantages conveyed by the folding armchair according to the invention result from the stated task, furthermore from the following description of an exemplary embodiment with reference to drawings. It shows schematically:
  • Figure 1 is a plan view in the unfolded position of use.
  • Figure 2 shows the vertical longitudinal section along the line 11-11 in Fig. 1.
  • FIG. 3 shows the longitudinal section according to FIG. 2, with the backrest removed and the folding armchair in an intermediate position when folded;
  • Fig. 4 shows the longitudinal section according to Fig. 2, with the backrest removed and the folding armchair is completely folded.

Der dargestellte Klappsessel besteht im wesentlichen aus einem Rückteil 1, einem Vorderteil 2, einem Sitz 3, zwei Armlehnen 4, zwei scherenartig beweglichen Strebenkreuzen 5, zwei Kniehebelgestängen 6, zwei Paaren von Streben 7, 8 und einer Rückenlehne 9.The folding chair shown consists essentially of a back part 1, a front part 2, a seat 3, two armrests 4, two scissor-like movable strut crosses 5, two toggle linkages 6, two pairs of struts 7, 8 and a backrest 9.

Das Rückteil 1 ist als ebener Rahmen mit zwei zueinander parallelen, langgestreckten Trägern 10 und 11 ausgebildet, welche durch zwei zueinander parallele Querstangen 12 und 13 aneinander befestigt sind. Auch das kürzere Vorderteil 2 ist als ebener Rahmen mit zwei zueinander parallelen, langgestreckten Trägern 14 und 15 ausgebildet, welche durch eine Querstange 16 aneinander befestigt sind. Die beiden Rahmen weisen also jeweils eine H -förmige Gestalt auf.The back part 1 is designed as a flat frame with two mutually parallel, elongated supports 10 and 11 which are fastened to one another by two mutually parallel cross bars 12 and 13. The shorter front part 2 is also designed as a flat frame with two mutually parallel, elongated supports 14 and 15, which are fastened to one another by a cross bar 16. The two frames each have an H-shaped shape.

Der Sitz 3 ist von einer flexiblen Bahn 17 gebildet, welche sich im Gebrauchszustand des Klappsessels gemäss Fig. 1 und 2 quer und etwa waagerecht zwischen dem etwa senkrecht auf dem Boden stehenden Rückteil 1 und dem ebenfalls etwa senkrecht auf dem Boden stehenden Vorderteil 2 erstreckt, dabei zweckmässigerweise unter einer leichten Zugspannung stehend. Die beiden Enden der flexiblen Bahn 17 sind jeweils an der unteren Querstange 13 des Rückteils 1 bzw. an der Querstange 16 des Vorderteils 2 befestigt.The seat 3 is formed by a flexible web 17 which, when the folding chair according to FIGS. 1 and 2 is in use, extends transversely and approximately horizontally between the back part 1 which is approximately perpendicular to the floor and the front part 2 which is also approximately perpendicular to the floor, expediently under a slight tension. The two ends of the flexible web 17 are each attached to the lower crossbar 13 of the rear part 1 and to the crossbar 16 of the front part 2.

Auch die Rückenlehne 9 besteht aus einer flexiblen Bahn 18, welche zwischen zwei federnden Schenkeln 19 und 20 zweier V-förmiger Bügel 21 und 22 gespannt ist, wobei die beiden Schenkel 19 und 20 in zwei Querschlaufen an den beiden Enden der flexiblen Bahn 18 aufgenommen sein können. Die beiden Bügel 21 und 22 sind jeweils von einem Innenzapfen 23 bzw. 24 am freien oberen Ende des benachbarten Trägers 10 bzw. 11 des Rückteils 1 untergriffen und mit dem anderen Schenkel 25 am Rückteil 1 festgelegt, so dass die beiden federnden Schenkel 19 und 20 vom zugehörigen Innenzapfen 23 bzw. 24 schräg nach unten und auf das Vorderteil 2 zu ragen, wie aus Fig. 2 ersichtlich, und sich in der Gebrauchsstellung des Klappsessels eine im ganzen weichnachgiebige Rückenabstützung für den Benutzer ergibt. Vor dem Zusammenklappen des Klappsessels über die Zwischenstellung gemäss Fig. 3 in die zusammengeklappte Stellung gemäss Fig. 4 kann die Rückenlehne 9 bzw. die flexible Bahn 18 mit den beiden V-förmigen Bügeln 21 und 22 vom Rückteil 1 abgenommen werden.The backrest 9 also consists of a flexible web 18 which is stretched between two resilient legs 19 and 20 of two V-shaped brackets 21 and 22, the two legs 19 and 20 being received in two transverse loops at the two ends of the flexible web 18 can. The two brackets 21 and 22 are each gripped by an inner pin 23 or 24 at the free upper end of the adjacent support 10 or 11 of the back part 1 and fixed with the other leg 25 on the back part 1, so that the two resilient legs 19 and 20 to project obliquely downward from the associated inner pin 23 or 24 and onto the front part 2, as can be seen in FIG. 2, and in the use position of the folding armchair there is a soft back support for the user as a whole. Before folding the folding chair over the intermediate position according to FIG. 3 into the folded position according to FIG. 4, the backrest 9 or the flexible sheet 18 with the two V-shaped brackets 21 and 22 can be removed from the back part 1.

Die beiden scherenartig beweglichen Strebenkreuze 5 bestehen jeweils aus zwei gleich langen Streben 26 und 27, welche um eine zu den Querstangen 12, 13 und 16 parallele Achse 28 schwenkbar miteinander verbunden sind. Am unteren Ende sind die beiden Streben 26 und 27 jeweils um eine zur Achse 28 parallele Achse 29 bzw. 30 schwenkbar am unteren Ende des Rückteils 1 bzw. des Vorderteils 2 angelenkt, und zwar bei einem Strebenkreuz 5 auf der einen Seite des Klappsessels und beim anderen Strebenkreuz 5 auf der anderen Seite des Klappsessels, also auf der Innenseite der unteren Enden der beiden langgestreckten Träger 10 und 14 unterschiedlicher Länge bzw. der beiden langgestreckten Träger 11 und 15 unterschiedlicher Länge. Die beiden oberen Enden jedes Strebenkreuzes 5 bzw. der beiden Streben 26 und 27 desselben sind durch eine Strebe 8 bzw. eine Strebe 7 mit dem oberen Ende des Vorderteils 2 bzw. mit dem Rückteil 1 an dessen oberer Querstange 12 auf der jeweiligen Seite des Klappsessels gelenkig verbunden. Jede Strebe 7 ist um zwei zur Achse 28 parallele Achsen 31 und 32 schwenkbar innen am benachbarten Träger 10 bzw. 11 des Rückteils 1 bzw. aussen am oberen Ende der Strebe 27 des zugehörigen Strebenkreuzes 5 angelenkt. Jede Strebe 8 ist ebenfalls um zwei zur Achse 28 parallele Achsen 33 und 34 schwenkbar innen am benachbarten Träger 14 bzw. 15 des Vorderteil 2 bzw. aussen am oberen Ende der Strebe 26 des zugehörigen Strebenkreuzes 5 angelenkt.The two scissor-like movable strut crosses 5 each consist of two struts 26 and 27 of equal length, which are pivotally connected to one another about an axis 28 parallel to the transverse rods 12, 13 and 16. At the lower end, the two struts 26 and 27 are each pivotably pivoted about an axis 29 or 30 parallel to the axis 28 at the lower end of the rear part 1 or the front part 2, specifically with a strut cross 5 on one side of the folding chair and at another strut cross 5 on the other side of the folding chair, that is, on the inside of the lower ends of the two elongated supports 10 and 14 of different lengths or the two elongated supports 11 and 15 of different lengths. The two upper ends of each strut cross 5 or the two struts 26 and 27 of the same are through a strut 8 or a strut 7 with the upper end of the front part 2 or with the back part 1 on its upper crossbar 12 on the respective side of the folding chair articulated. Each strut 7 is pivoted about two axes 31 and 32 parallel to the axis 28 on the inside of the adjacent support 10 or 11 of the rear part 1 or on the outside of the upper end of the strut 27 of the associated strut cross 5. Each strut 8 is also pivoted about two axes 33 and 34 parallel to the axis 28 on the inside of the adjacent support 14 or 15 of the front part 2 or on the outside of the upper end of the strut 26 of the associated strut cross 5.

Die beiden Kniehebelgestänge 6 sind jeweils zwischen den beiden oberen Enden des einen bzw. des anderen Strebenkreuzes 5 bzw. den beiden Achsen 32 und 34 der beiden Streben 26 und 27 desselben vorgesehen, um die beiden Strebenkreuze 5 in der auseinandergeklappten Gebrauchsstellung des Klappsessels gemäss Fig. 1 und 2 gespreizt zu halten. Jedes Kniehebelgestänge 6 besteht aus einer längeren ersten Strebe 35 und einer kürzeren zweiten Strebe 36, welche jeweils an einem Ende um die Achse 34 bzw. um die Achse 32 schwenkbar innen am oberen Ende der Strebe 26 des zugehörigen Strebenkreuzes 5 bzw. aussen am oberen Ende der Strebe 27 des zugehörigen Strebenkreuzes 5 angelenkt sind. Am anderen Ende ist die kürzere zweite Strebe 36 um eine zur Achse 28 parallele Achse 37 schwenkbar aussen an der längeren ersten Strebe 35 angelenkt, und zwar etwa in der Mitte derselben. Die längere erste Strebe 35 trägt die Armlehne 4 auf der betreffenden Seite des Klappsessels.The two toggle linkages 6 are each provided between the two upper ends of the one or the other strut cross 5 or the two axes 32 and 34 of the two struts 26 and 27 thereof in order to secure the two strut crosses 5 in the unfolded use position of the folding chair according to FIG. Keep 1 and 2 spread. Each toggle linkage 6 consists of a longer first strut 35 and a shorter second strut 36, each pivotable at one end about the axis 34 or about the axis 32 inside at the upper end of the strut 26 of the associated strut cross 5 or outside at the upper end the strut 27 of the associated strut cross 5 are articulated. At the other end, the shorter second strut 36 is about an axis 37 parallel to the axis 28 pivoted on the outside of the longer first strut 35, approximately in the middle thereof. The longer first strut 35 supports the armrest 4 on the relevant side of the folding chair.

Wie besonders deutlich aus Fig. 2 hervorgeht, liegt in der dargestellten durchgedrückten Stellung jedes Kniehebelgestänges 6 die gemeinsame Gelenkachse 37 der ersten Strebe 35 und der zweiten Strebe 36 desselben unterhalb der Verbindungslinie der beiden Gelenkachsen 34 und 32 zwischen den beiden oberen Enden des zugehörigen Strebenkreuzes 5 und der ersten bzw. zweiten Strebe 35 bzw. 36 und liegt die längere erste Strebe 35 mit ihrem freien Ende 38 an dem oberen Ende des zugehörigen Strebenkreuzes 5 bzw. der Strebe 27 desselben an, an welchem die zweite Strebe 36 um die Achse 32 schwenkbar angelenkt ist.As can be seen particularly clearly from FIG. 2, in the illustrated depressed position of each toggle linkage 6, the common hinge axis 37 of the first strut 35 and the second strut 36 thereof lies below the connecting line of the two hinge axes 34 and 32 between the two upper ends of the associated strut cross 5 and the first or second strut 35 or 36 and the longer first strut 35 rests with its free end 38 on the upper end of the associated strut cross 5 or strut 27 thereof, on which the second strut 36 is pivotable about the axis 32 is articulated.

Auf diese Weise ist eine sehr hohe Stabilität des Klappsessels in der auseinandergeklappten Gebrauchsstellung erzielt, so dass der Klappsessel dann bewegt und umgestellt werden kann, ohne zusammenklappen zu können. Die beiden Kniehebelgestänge 6 können nämlich aus der durchgedrückten Stellung gemäss Fig. 2, in welcher sie die beiden Strebenkreuze 5 gespreizt halten, nicht ohne weiteres unter Hochlaufen der jeweiligen gemeinsamen Gelenkachse 37 zusammenklappen, weil dabei der gegenseitige Abstand der jeweiligen Gelenkachsen 32 und 34 sich zunächst vergrössern würde, dem aber die schon vorhandene und dabei vergrösserte oder gegebenenfalls dabei erst entstehende Zugspannung in der flexiblen Bahn 17 des Sitzes 3 entgegenwirkt. Bei Belastung des Klappsessels bzw. des Sitzes 3 desselben erhöht sich noch die Kraft, mit welcher die beiden Kniehebelgestänge 6 in der in Fig. 2 dargestellten stabilen Stellung gehalten werden. Sie ist dem Gewicht des Benutzers proportional, welcher auf dem Sitz 3 bzw. der flexiblen Bahn 17 sitzt. Im Gebrauchszustand gemäss Fig. 1 und 2 erstrecken sich die drei Streben 7, 35 und 8 auf jeder Seite des Klappsessels im wesentlichen entlang derselben horizontalen Geraden, so dass also auch die beiden an den beiden mittleren Streben 35 vorgesehenen Armlehnen 4 etwa horizontal verlaufen.In this way, a very high stability of the folding armchair is achieved in the unfolded position of use, so that the folding armchair can then be moved and changed over without being able to fold. 2, in which they hold the two strut crosses 5 apart, cannot easily collapse while the respective joint joint axis 37 runs up, because the mutual distance between the respective joint axes 32 and 34 is initially different would increase, but this is counteracted by the already existing and thereby enlarged or possibly only emerging tensile stress in the flexible web 17 of the seat 3. When the folding armchair or the seat 3 is loaded, the force with which the two toggle linkages 6 are held in the stable position shown in FIG. 2 increases. It is proportional to the weight of the user sitting on the seat 3 or the flexible track 17. 1 and 2, the three struts 7, 35 and 8 on each side of the folding chair extend essentially along the same horizontal straight line, so that the two armrests 4 provided on the two central struts 35 also run approximately horizontally.

Der Klappsessel ist sehr einfach zu betätigen. Um ihn zusammenzuklappen genügt es, die beiden Armlehnen 4 zu ergreifen und hochzuziehen, so dass die beiden mittleren Streben 35 um ihre beiden Achsen 34 nach oben schwenken und die beiden Kniehebelgestänge 6 zusammenklappen, wobei die erwähnte Zugspannung in der flexiblen Bahn 17 überwunden werden muss, welche ansteigt, bis die drei Gelenkachsen 32, 34 und 37 jedes Kniehebelgestänges 6 auf derselben Geraden liegen, um dann wieder abzufallen. Nach Überschreiten dieser Streckstellung der beiden Kniehebelgestänge 6 können das Rückteil 1 einerseits und das Vorderteil 2 sowie die Armlehnen 4 andererseits über die Zwischenstellung gemäss Fig. 3 vollständig gegeneinander geklappt werden, wie in Fig. 4 gezeigt, nachdem vorher die Rückenlehne 9 entfernt worden ist. In dieser zusammengeklappten Stellung nimmt der Klappsessel nur sehr wenig Platz in Anspruch. Wie aus Fig. 4 hervorgeht, entspricht die maximale Breite etwa der doppelten Breite der gleich breiten Träger 10, 11, 14 und 15.The folding armchair is very easy to operate. To fold it up, it is sufficient to grasp the two armrests 4 and pull them up so that the two middle struts 35 pivot upwards about their two axes 34 and the two toggle linkages 6 fold up, the tension mentioned in the flexible web 17 having to be overcome, which rises until the three hinge axes 32, 34 and 37 of each toggle linkage 6 lie on the same straight line and then falls again. After this extended position of the two toggle linkages 6 has been exceeded, the back part 1 on the one hand and the front part 2 and the armrests 4 on the other hand can be completely folded against one another via the intermediate position according to FIG. 3, as shown in FIG. 4, after the backrest 9 has been removed beforehand. In this folded position, the folding armchair takes up very little space. As can be seen from FIG. 4, the maximum width corresponds approximately to twice the width of the carriers 10, 11, 14 and 15 of the same width.

Das Auseinanderklappen des Klappsessels aus der zusammengeklappten Stellung gemäss Fig. 4 in die Gebrauchsstellung gemäss Fig. 1 und 2 erfolgt genauso einfach unter Durchlaufen der Zwischenstellung gemäss Fig. 3. Dabei wird schliesslich die flexible Bahn 17 gespannt und werden die beiden Kniehebelgestänge 6 in die stabile Stellung gemäss Fig. 2 durchgedrückt, so dass der Klappsessel hörbar in der Gebrauchsstellung einrastet. Ein Klemmen braucht bei diesem Auseinanderklappen ebenso wenig befürchtet zu werden, wie beim geschilderten Zusammenklappen des Klappsessels.Unfolding the folding chair from the folded position according to FIG. 4 into the use position according to FIGS. 1 and 2 is just as easy by passing through the intermediate position according to FIG. 3. Finally, the flexible track 17 is tensioned and the two toggle linkages 6 become stable The position shown in Fig. 2 pressed so that the folding armchair audibly engages in the use position. There is no need to worry about jamming when folding it apart, as when folding the folding chair as described.

In der Gebrauchsstellung gemäss Fig. 1 und 2 ist der Klappsessel sehr komfortabel. Aufgrund der geschilderten H-förmigen Gestalt des rah- menartigen Vorderteils 2 kann der Benutzer seine Füsse ungehindert unter den Sitz 3 zurückstekken. Die nach dem Auseinanderklappen des Klappsessels in die Gebrauchsstellung in das Rückteil 1 eingesetzte Rückenlehne 9 stellt eine sehr angenehme Rückenabstützung für den Benutzer dar, weil sie im ganzen weich-nachgiebig ist und der Benutzer mit seinem Rücken mit keinerlei Querstrebe oder Querstange des Rückteils 1 in Berührung kommt.1 and 2, the folding armchair is very comfortable. Based on the described shape of the H-shaped frame-menarti g en front part 2, the user can freely Tekken his feet under the seat. 3 The backrest 9 inserted after the folding armchair is folded into the use position in the back part 1 is a very pleasant back support for the user because it is soft and flexible on the whole and the user with his back in contact with no cross strut or crossbar of the back part 1 is coming.

Bei alledem zeichnet sich der Klappsessel durch einen sehr einfachen Aufbau aus verhältnismässig wenigen, einfachen Bauelementen aus. Während die beiden V-förmigen Bügel 21 und 22 vorzugsweise aus Federstahl und die beiden flexiblen Bahnen 17 sowie 18 vorzugsweise aus textilem Material hergestellt werden, können die übrigen Bauelemente, abgesehen von den erwähnten Achsen, beispielsweise aus Holz oder Kunststoff bestehen.In all this, the folding armchair is characterized by a very simple structure made up of relatively few, simple components. While the two V-shaped brackets 21 and 22 are preferably made of spring steel and the two flexible tracks 17 and 18 are preferably made of textile material, the other components, apart from the axes mentioned, can be made of wood or plastic, for example.

Claims (3)

1. Folding chair having a back portion (1) and a front portion (2) for supporting the chair on the floor which portions
a) support a seat (3) formed by a flexible web (17) of textile material or the like the two ends of which are secured to the back portion (1) and respectively to the front portion (2),
b) hold two armrests (4) extending on the one side and respectively on the other side of the back portion (1) and the front portion (2) between said portions and each being articulated to the back portion (1) and the front portion (2) and
c) are articulated to each other on either side by a cross strut assembly (5) movable like a scissors the two upper ends of which are located at the level of the adjacent armrest (4) and each are pivotally connected through a strut (7 or respectively 8) to the back portion (1) or respectively to the front portion (2),
so that the back portion (1) on the one hand and the front portion (2) and the armrests (4) on the other hand can be folded against each other, characterized in that
d) there are provided two toggle lever linkages (6) for spreading the two cross strut assemblies (5), the linkages being disposed between the two upper ends of the one and respectively of the other cross strut assembly (5) and being adapted to be pushed into a stable position against the action of the tension load generated between the back portion (1) and the front portion (2) when the flexible web (17) is stretched, wherein
e) each toggle lever linkage (6) consists of a longer first strut (35) and a shorter second strut (36) the remote ends of which are pivotally connected to the front portion (2) adjacent upper end of the associated cross strut assembly (5) and respectively to the back portion (1) adjacent upper end of the associated cross strut assembly (5) and which are articulated to each other at the center thereof and respectively at the other end thereof, so that in the pushed position of the toggle lever linkage (6) the articulation axis (37) between the first strut (35) and the second strut (36) is located below the line connecting the two articulation axes (34, 32) between the upper ends of the cross strut assembly (5) and the first strut (35) and respectively the second strut (36) and the first strut (35) with its free end (38) abuts the back portion (1) adjacent upper end of the cross strut assembly (5), and wherein
f) the armrests (4) are provided on the first strut (35) of the one and respectively of the other toggle lever linkage (6).
2. Folding chair according to claim 1, characterized in that the back portion (1) and the front portion (2) each consist of two mutually parallel, elongated supports (10, 11 or respectively 14, 15) secured to each other by two mutually parallel cross bars (12, 13) or respectively by a single cross bar (16), the upper cross bar (12) of the back portion (1) being located in the region of the articulation points (31) of the two struts (7) connecting the back portion (1) and the two cross strut assemblies (5) and the two ends of the flexible web (17) being secured to the lower cross bar (13) of the back portion (1) and respectively to the cross bar (16) of the front portion (2).
3. Folding chair according to claim 2, characterized in that the back portion (1) is longer than the front portion (2) and that its two supports (10, 11) are each provided at the free upper end with an inner stud (23 or respectively 24), wherein two V-shaped yokes (21, 22), preferably of spring steel, are adapted to be put on the two inner studs (23, 24) in a manner such as to extend each with a resilient leg (19 or respectively 20) from the associated inner stud (23 or respectively 24) obliquely and downwardly towards the front portion (2), whereas the other leg (25) is fixed to the back portion (1), and wherein furthermore the two resilient legs (19, 20) of the yokes (21, 22) are connected to each other by a flexible web (18), preferably of textile material, which forms a backrest (9).
EP84112367A 1984-01-13 1984-10-15 Folding chair Expired EP0150270B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8400924U 1984-01-13
DE19848400924U DE8400924U1 (en) 1984-01-13 1984-01-13 FOLDING ARMCHAIR

Publications (3)

Publication Number Publication Date
EP0150270A2 EP0150270A2 (en) 1985-08-07
EP0150270A3 EP0150270A3 (en) 1986-10-08
EP0150270B1 true EP0150270B1 (en) 1988-04-20

Family

ID=6762385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112367A Expired EP0150270B1 (en) 1984-01-13 1984-10-15 Folding chair

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US (1) US4645260A (en)
EP (1) EP0150270B1 (en)
DE (2) DE8400924U1 (en)
ES (1) ES282537Y (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3919202A1 (en) * 1989-06-13 1990-12-20 Bayer Ag LIGHT COMPOSITE WITH DUROMER MATRIX
TW401788U (en) * 1999-06-05 2000-08-11 Ting Chin Ind Co Ltd Foldable chair
US7066534B2 (en) 2001-08-10 2006-06-27 North Pole Limited Hard arm chair with sliding arm mechanisms
US6840182B2 (en) * 2002-07-02 2005-01-11 Roy Justin Price Portable modular field kitchen
US6568752B1 (en) * 2002-08-12 2003-05-27 Chien-Chu Lu Foldable chair
USD804836S1 (en) 2016-09-16 2017-12-12 Francesco Lieberman Canopy swing chair
CN107647661A (en) * 2017-11-03 2018-02-02 台州市迷恋休闲用品有限公司 Folding device and folding seat
US11457743B1 (en) * 2020-06-01 2022-10-04 True Places, Inc. Folding chair with articulated armrests
CN112971422B (en) * 2021-02-07 2024-04-19 浙江森影休闲用品有限公司 Linkage chair

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE261236C (en) *
GB215551A (en) * 1923-04-25 1924-05-15 Alfred Herbert Davis Improved folding chair
DE488630C (en) * 1928-05-25 1930-04-22 Heinrich Blessmann Dr Folding furniture, especially a folding chair
GB346410A (en) * 1929-10-08 1931-04-08 Benjamin Greene Improvements relating to chairs
US2104255A (en) * 1937-06-19 1938-01-04 Leto J Garbaccio Collapsible armchair
US2460459A (en) * 1947-03-13 1949-02-01 Al R Brooks Folding article
US2591284A (en) * 1947-09-16 1952-04-01 Gosta K Oden Foldable reclining chair
GB666871A (en) * 1948-09-30 1952-02-20 Owen Finlay Maclaren Improvements in chairs
CA1113849A (en) * 1978-10-31 1981-12-08 Robert Thiboutot Collapsible support structure and devices formed therefrom

Also Published As

Publication number Publication date
DE3470452D1 (en) 1988-05-26
DE8400924U1 (en) 1984-04-19
US4645260A (en) 1987-02-24
ES282537Y (en) 1985-12-16
EP0150270A2 (en) 1985-08-07
EP0150270A3 (en) 1986-10-08
ES282537U (en) 1985-05-01

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