EP0090905B1 - Armrest for sitting furniture - Google Patents

Armrest for sitting furniture Download PDF

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Publication number
EP0090905B1
EP0090905B1 EP82710021A EP82710021A EP0090905B1 EP 0090905 B1 EP0090905 B1 EP 0090905B1 EP 82710021 A EP82710021 A EP 82710021A EP 82710021 A EP82710021 A EP 82710021A EP 0090905 B1 EP0090905 B1 EP 0090905B1
Authority
EP
European Patent Office
Prior art keywords
supporting bracket
connecting pieces
leg
armrest according
arm 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.)
Expired
Application number
EP82710021A
Other languages
German (de)
French (fr)
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EP0090905A1 (en
Inventor
Horst Ziegler
Herbert Jehle
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.)
Christof Stoll GmbH and Co KG
Original Assignee
Christof Stoll 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 Christof Stoll GmbH and Co KG filed Critical Christof Stoll GmbH and Co KG
Priority to EP82710021A priority Critical patent/EP0090905B1/en
Priority to AT82710021T priority patent/ATE14656T1/en
Priority to DE8282710021T priority patent/DE3265176D1/en
Publication of EP0090905A1 publication Critical patent/EP0090905A1/en
Application granted granted Critical
Publication of EP0090905B1 publication Critical patent/EP0090905B1/en
Expired legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/54Supports for the arms
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/54Supports for the arms
    • A47C7/546Supports for the arms of detachable type

Definitions

  • the invention relates to an armrest according to the preamble of claim 1.
  • Such an armrest is known for. B. from the Martin Stoll Collection / N •. It has a U-shaped support bracket with a round tube cross section and two upwardly directed legs, at the base of which a cross member attached to the seat is attached.
  • the arm support is formed by a likewise U-shaped round tube with a smaller diameter and two legs pointing downwards, which is covered with integral foam to form the armrest.
  • Firmly connected plastic sleeves with outer rings are attached to the leg ends of the arm carrier. These plastic sleeves are driven - in the manner of the known plastic champagne corks - into the round tube openings of the carrier bracket.
  • a disadvantage of this known solution with a round tube support bracket and crossmember welded to the base is also the fact that the connection end of the crossmember has to be adapted to the round tube of the bracket and the connection is inevitably within the user's field of vision.
  • the weld seams must be plastered accordingly. Both adapting and plastering are very expensive. If you were to replace welding with brazing, plastering could possibly be saved, but the costs would also be very high.
  • the support bracket also consists of a U-shaped tube, in this case with an oval cross-section, and upward-pointing legs.
  • the armrest has a foam-covered arm support with downward-pointing legs made of flat iron that protrude from the foam. These legs are inserted into the oval tube ends of the support bracket and screwed there.
  • the screw heads are inevitably visible, which the user perceives as unaesthetic.
  • the two known armrests are basically distinguished from other armrests in that the support bracket and armrest form a self-contained annular unit.
  • the aim is to achieve the aesthetically advantageous visual impression of a so-called "ring armrest", which in itself - with the increased manufacturing costs involved - usually consists of a completely foamed metal ring.
  • the costs are to be reduced by the divided structure, but without giving up the formal advantage of the “ring armrest.
  • the known ring armrests have the disadvantages mentioned above.
  • the armrest according to the invention advantageously comprises a maximum of only three different parts: the support bracket, the arm support which runs into the two connecting pieces and the holding clips provided at the ends thereof.
  • the arm support is extremely easy to assemble and disassemble. After assembly, it clamps and wedges itself. With regard to the manufacturing tolerances, no special requirements are placed on the manufacturing quality, since the usual tolerances are compensated for by the type of construction. Nevertheless, the assembled parts are tight and do not come loose even in tough continuous use. This achieves the formal and technical advantages of a ring armrest with significantly reduced manufacturing costs.
  • the support bracket 1 which consists of a U-shaped tube which, as can be seen from Figs. 2 and 3, has an oval cross-section.
  • the tube is bent on its broad side and there are two legs 5, 6 pointing upwards.
  • the armrest consists of an arm support 2, which is covered in a known manner with a suitably shaped cushion 17, preferably an integral foam.
  • the arm support 2 consists of flat material, preferably sheet steel or plastic, which is profiled in the arm support area K. As can be seen from FIG. 4, a 3-U profile is selected here. The profiling and design of the flat material is such that it transmits the arm support forces acting on the support bracket 1 without deformation.
  • the arm support 2 is therefore rigid.
  • the profiling ends in the material thickness, so there is no longer any profiling here.
  • the arm support 2 can be punched and pressed very inexpensively. Casting or injection molding of plastic is also possible.
  • Installation is simple and inexpensive by inserting the connecting pieces 3, 4 of the arm support 2 into the leg openings 7, 8 of the support bracket 1 by hand or by machine.
  • the connecting pieces 3, 4 are symmetrically wedge-shaped in the edge region of the support bracket, the width of the wedge from a value above to a value below the value of the inside diameter of the receiving part of the leg openings 7 , 8 of the support bracket 1 decreases. In the case of the oval cross section according to FIGS. 2, 3, this inside diameter is therefore the largest inside diameter that occurs, or the distance between the two narrow sides that form the receiving part of the leg openings 7, 8.
  • the symmetrical wedge-shaped design of the connecting pieces 3, 4 in turn reduces the requirements on the manufacturing tolerances.
  • the wedge brings about an advantageous wedging of the connecting pieces 3, 4 in the leg openings 7, 8 of the support bracket 1, in particular if the pitch angle of the wedge is smaller than the friction angle or the friction coefficient of the material pairing of the connection piece support bracket.
  • the angle should therefore be less than 8 degrees.
  • the connecting pieces 3, 4 penetrate into the leg openings 7, 8 to different depths, depending on the dimensions. This would create an aesthetically disturbing gap between the cushion 17 and the support bracket 1.
  • the pad 17 advantageously has a circumferential lip 18 covering the transition of the connecting pieces 3, 4 into the leg openings 7, 8 of the carrier bracket 1.
  • the ends of the connecting pieces 3, 4, which are seated within the legs 5, 6 of the support bracket 1, each have resilient retaining clips 9, 10 intended. They are preferably made of spring steel or a material with resilient properties, and are supported on the one hand on the connecting pieces 3, 4 and on the other hand on the inner wall of the legs 5, 6 of the support bracket 1.
  • the retaining clip 9 comprises only a spring collar, which is supported between the connector " 3 and the inner wall of the leg opening 7.
  • a resilient leg of the retaining clip 9 encloses the end of the The connecting piece 3 is pressed against the end and effectively wedged in the pipe cross-section by the considerable spring forces of the supporting leg and the tolerances between the pipe inside diameter and the ends of the connecting piece 3 are fit automatically balanced, and there is a second play-free seat below the wedge.
  • this seat at the end of the connecting piece 3 this is kept narrow above the end, and only the end itself has a value which is slightly smaller than that smallest value of the largest occurring inside diameter of the profile pipe.
  • FIG. 4 Such an embodiment is shown in FIG. 4.
  • the retaining clip 9 has barbs 14 on the one hand, and a retaining lug 13 on the other hand, which engages in an opening of the connecting piece 3.
  • the obliquely upward barbs 14 do not interfere when the arm support 2 is inserted into the leg opening 7. However, they cling to the wall of the tube when the arm support 2 is pulled upwards, provided that the material of the barb 14 is harder than that of the support bracket 1.
  • the retaining lug 13 ensures that when the arm carrier 2 is replaced, the retaining clip 9 is in any case also pulled out of the leg opening 7 and can be replaced if necessary.
  • the retaining clip 10 has two spring collars, which are supported on both sides of the connector 4 on the tube wall of the bracket 1.
  • the outer leg of each spring collar in turn has barbs 14 which claw into the wall of the support bracket tube.
  • the embodiment with the two spring collars of the holding clip 10 brings about an even greater holding force than the holding clip 9 with only one spring collar.
  • the connecting piece 4 is held in the middle of the support bracket tube, that is to say not pressed against the inner wall of the tube as in FIG. 2 and wedged there.
  • the lower end of the connecting piece 4 is somewhat wider than the larger one according to a further idea of the invention. ste occurring inner diameter of the support bracket tube executed, and provided in the end a longitudinal slot 12. This is shown in Fig. 5. This allows the two end parts of the connecting piece 4 to deflect resiliently towards the center and wedge against the pipe wall on both sides with the magnitude of the spring force.
  • the arm support can also be made of plastic in addition to steel, preferably by injection molding. This is particularly useful and cost-effective when there is no upholstery covering and the entire armrest is made of one piece.
  • the connectors 3, 4 are then part of the armrest itself.
  • the retaining clip 9, 10 can be made from z. B. plastic. They can also be molded onto a plastic arm support so that the number of individual parts is further reduced. Since in this case the barbs 14 of the softer plastic could not catch in the metal wall of the carrier bracket 1, according to a further idea of the invention, recesses 15 in the form of impressions or small recesses are provided in the inner wall thereof, in which the barbs 14 engage.
  • both the support bracket 1 and the cross member 11 now consist of a U-shaped profile tube with an oval cross section, which is bent on its broad side.
  • the leg opening 16 of the cross member 11 is integrally bonded to the underside of the base of the support bracket 1.
  • the armrest according to the invention is particularly suitable for office seating furniture with a central pedestal, in which ring armrests are preferably used.
  • the armrest can also be attached directly to the seat.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Hydrogenated Pyridines (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Seats For Vehicles (AREA)

Abstract

1. Armrest for seat furniture, especially for office seat furniture with a central standing column, with a U-shaped supporting bracket (1) with a tubular cross-section and two legs (5, 6) pointing upwards, and with an arm support (2) having two connecting pieces (3, 4) which point downwards and which engage into the leg orifices (7, 8) of the legs (5, 6) of the supporting bracket (1), characterised in that the arm support (2) is made flexurally rigid in the arm-resting region (K) and flexurally pliable at the connecting pieces (3, 4), in that the connecting pieces (3, 4) are made symmetrically wedge-shaped in the edge region of the supporting bracket (1), the width of the wedge decreasing from a value above to a value below the value of the inside diameter of the receiving part of the leg orifices (7, 8) of the supporting bracket (1), and in that there is at the end of each of the connecting pieces (3, 4), which is located within the appropriate leg (5, 6) of the supporting bracket (1), a resilient retaining clip (9, 10) which is supported, on the one hand, on the connecting piece (3, 4) and, on the other hand, on the inner wall of the appropriate leg (5, 6) of the supporting bracket (1).

Description

Die Erfindung betrifft eine Armlehne nach dem Oberbegriff des Anspruchs 1.The invention relates to an armrest according to the preamble of claim 1.

Eine solche Armlehne ist bekannt z. B. von dem auf dem Markt angebotenen Sitzmöbel « Martin Stoll Kollektion/N •. Sie weist einen U-förmigen Trägerbügel mit Rundrohr-Querschnitt und zwei aufwärts gerichteten Schenkeln auf, an dessen Basis ein am Sitz befestigter Querträger angebracht ist. Der Armträger wird gebildet durch ein gleichfalls U-förmiges Rundrohr mit kleinerem Durchmesser und zwei abwärts weisenden Schenkeln, das zwecks Bildung der Armauflage mit Integralschaum umkleidet ist. An den Schenkelenden des Armträgers sind fest verbundene Kunststoffhülsen mit Aussenringen angebracht. Diese Kunststoffhülsen werden - in Art der bekannten Kunststoff-Sektkorken - in die Rundrohröffnungen des Trägerbügels hineingetrieben. Da die Rohre des Trägerbügels und des Armträgers sehr biegesteif sind, müssen bei dieser bekannten Armlehne sowohl hinsichtlich der Abstände der U-Schenkel als auch der Rohrdurchmesser sehr enge Fertigungstoleranzen eingehalten werden. Das ist aufwendig und dementsprechend teuer. Ferner ist aufgrund des Presssitzes der Kunststoff-Hülsen in den . Schenkelöffnungen des Trägerbügels der Austausch einer etwa beschädigten Armauflage für den Benutzer so gut wie unmöglich. Nach Entfernen einer solchen beschädigten Armauflage müsste die neue nämlich entweder mit Gewalt eingeschlagen werden, was in der Regel zu einer Beschädigung des Integralschaumes führt, oder sie müsste in die Schenkelöffnungen hineingedrückt werden, was aber nur mit einem Spezialwerkzeug möglich ist.Such an armrest is known for. B. from the Martin Stoll Collection / N •. It has a U-shaped support bracket with a round tube cross section and two upwardly directed legs, at the base of which a cross member attached to the seat is attached. The arm support is formed by a likewise U-shaped round tube with a smaller diameter and two legs pointing downwards, which is covered with integral foam to form the armrest. Firmly connected plastic sleeves with outer rings are attached to the leg ends of the arm carrier. These plastic sleeves are driven - in the manner of the known plastic champagne corks - into the round tube openings of the carrier bracket. Since the tubes of the support bracket and the arm support are very rigid, in this known armrest, very narrow manufacturing tolerances must be maintained both with regard to the spacing of the U-legs and the tube diameter. This is complex and accordingly expensive. Furthermore, due to the interference fit of the plastic sleeves in the. Thigh openings of the support bracket, the exchange of an approximately damaged armrest for the user is almost impossible. After removing such a damaged armrest, the new one would either have to be hammered in with force, which usually leads to damage to the integral foam, or it would have to be pressed into the leg openings, which is only possible with a special tool.

Nachteilig ist bei dieser bekannten Lösung mit einem Rundrohr-Trägerbügel und an der Basis angeschweissten Querträger ferner die Tatsache, dass das Anschlussende des Querträgers an das Rundrohr des Bügels angepasst werden muss, und die Verbindung zwangsläufig im Sichtbereich des Benutzers liegt. Die Schweissnähte müssen dementsprechend verputzt werden. Sowohl das Anpassen als auch das Verputzen sind aber sehr kostenaufwendig. Würde man das Schweissen durch Hartlöten ersetzen, so könnte das Verputzen zwar evtl. gespart werden, jedoch wären die Kosten gleichfalls sehr hoch.A disadvantage of this known solution with a round tube support bracket and crossmember welded to the base is also the fact that the connection end of the crossmember has to be adapted to the round tube of the bracket and the connection is inevitably within the user's field of vision. The weld seams must be plastered accordingly. Both adapting and plastering are very expensive. If you were to replace welding with brazing, plastering could possibly be saved, but the costs would also be very high.

Bei einem anderen bekannten Sitzmöbel besteht der Trägerbügel gleichfalls aus einem U-förmigen Rohr, in diesem Fall mit ovalem Querschnitt, und aufwärts weisenden Schenkeln. Die Armauflage weist einen umschäumten Armträger auf mit nach unten weisenden Schenkeln aus Flacheisen, die aus dem Schaum herausragen. Diese Schenkel werden in die Ovalrohr-Enden des Trägerbügels gesteckt und dort verschraubt. Auch hier sind fertigungstechnisch aufwendige Anpassungsarbeiten des Abstandsmasses der U-Schenkel des Armträgers an das der Schenkel des Trägerbügels notwendig. Darüber hinaus sind aber auch unvermeidbar die Schraubköpfe sichtbar, was vom Benutzer als unästhetisch empfunden wird. Des weiteren besteht hier das alte Problem der Sicherung der Schraubverbindungen.In another known seating, the support bracket also consists of a U-shaped tube, in this case with an oval cross-section, and upward-pointing legs. The armrest has a foam-covered arm support with downward-pointing legs made of flat iron that protrude from the foam. These legs are inserted into the oval tube ends of the support bracket and screwed there. Here, too, it is necessary to adapt the spacing of the U-leg of the arm support to that of the leg of the support bracket, which is complex in terms of production technology. In addition, the screw heads are inevitably visible, which the user perceives as unaesthetic. Furthermore, there is the old problem of securing the screw connections.

Die beiden bekannten Armlehnen zeichnen sich gegenüber anderen Armlehnen grundsätzlich dadurch aus, dass Trägerbügel und Armauflage eine in sich geschlossene ringförmige Einheit bilden. Dadurch soll der ästhetisch vorteilhafte optische Eindruck einer sogenannten « Ringarmlehne » erzielt werden, die an sich - unter Inkaufnahme erhöhter Herstellungskosten - üblicherweise aus einem vollständig umschäumten Metallring besteht. Bei den bekannten Armlehnen sollen die Kosten durch den geteilten Aufbau gesenkt werden, ohne aber den formalen Vorteil der « Ringarmlehne aufzugeben. Die bekannten Ringarmlehnen weisen jedoch die obengenannten Nachteile auf.The two known armrests are basically distinguished from other armrests in that the support bracket and armrest form a self-contained annular unit. The aim is to achieve the aesthetically advantageous visual impression of a so-called "ring armrest", which in itself - with the increased manufacturing costs involved - usually consists of a completely foamed metal ring. In the known armrests, the costs are to be reduced by the divided structure, but without giving up the formal advantage of the “ring armrest. However, the known ring armrests have the disadvantages mentioned above.

Es ist daher die Aufgabe der vorliegenden Erfindung, eine Armlehne der eingangs genannten Art, also eine aus Teilen aufgebaute « Ringarmlehne derart zu verbessern, dass in der Produktion durch geringere Anforderungen an die Toleranzen der Teile und leichtere Montage die Kosten gesenkt werden, und für die Wartung eine leichte Demontage und Wiedermontage ermöglicht wird, trotzdem aber ein robustes Verhalten der Lehne im Gebrauch gewährleistet ist.It is therefore the object of the present invention to improve an armrest of the type mentioned at the outset, that is to say a ring armrest constructed from parts, in such a way that costs are reduced in production due to lower demands on the tolerances of the parts and easier assembly, and for Maintenance easy disassembly and reassembly is made possible, but nevertheless a robust behavior of the backrest during use is guaranteed.

Diese Aufgabe wird erfindungsgemäss durch die Merkmale des Anspruchs 1 gelöst.According to the invention, this object is achieved by the features of claim 1.

Die erfindungsgemässe Armlehne umfasst in vorteilhafter Weise maximal nur drei verschiedenartige Teile : den Trägerbügel, den in die zwei Verbindungsstücke auslaufenden Armträger und die an deren Enden vorgesehenen Halteklammern. Der Armträger ist ausserordentlich leicht zu montieren und zu demontieren. Nach der Montage klemmt und keilt er sich selbst fest. Hinsichtlich der Fertigungstoleranzen werden keine Sonderanforderungen an die Fertigungsqualität gestellt, da die üblichen Toleranzen durch die Art der Konstruktion ausgeglichen werden. Dennoch sitzen die montierten Teile fest und lösen sich auch im harten Dauergebrauch nicht. Damit werden die formalen und technischen Vorteile einer Ringarmlehne bei erheblich reduzierten Herstellkosten erreicht.The armrest according to the invention advantageously comprises a maximum of only three different parts: the support bracket, the arm support which runs into the two connecting pieces and the holding clips provided at the ends thereof. The arm support is extremely easy to assemble and disassemble. After assembly, it clamps and wedges itself. With regard to the manufacturing tolerances, no special requirements are placed on the manufacturing quality, since the usual tolerances are compensated for by the type of construction. Nevertheless, the assembled parts are tight and do not come loose even in tough continuous use. This achieves the formal and technical advantages of a ring armrest with significantly reduced manufacturing costs.

Im einzelnen werden diese Vorteile im wesentlichen bedingt durch die biegeweichen Enden des Armträgers, wodurch Toleranzen im Abstandsmass der U-Schenkel des Armträgers und des Trägerbügels ausgeglichen werden können, durch die Keilform der Verbindungsstücke im Randbereich des Trägerbügels, wodurch auch für den Rohrquerschnitt eine grössere Toleranz zulässig ist, ohne dass der Festsitz des Armträgers im Trägerbügel gefährdet würde, und schliesslich durch die Halteklammern, die die Verbindungsstücke im Trägerbügel-Rohr fixieren.In particular, these advantages are essentially due to the flexible ends of the arm support, whereby tolerances in the spacing of the U-legs of the arm support and the support bracket can be compensated for, by the wedge shape of the connecting pieces in the edge region of the support bracket, which also results in a greater tolerance for the tube cross section is permissible without endangering the arm support in the support bracket, and finally through the retaining clips that fix the connectors in the support bracket tube.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den nachfolgend anhand von Zeichnungen beschriebenen Ausführungsbeispielen. Dabei zeigt :

  • Figur 1 eine Seitenansicht einer erfindungsgemässen Armlehne,
  • Figur 2 den Schnitt A-A aus Fig. 1,
  • Figur 3 den Schnitt B-B aus Fig. 1,
  • Figur 4 den Schnitt C-C aus Fig. 1,
  • Figur 5 den Schnitt D-D aus Fig. 1, und
  • Figur 6 eine Darstellung einer besonderen Ausführungsart des Trägerbügels, wenn dessen Material härter ist als das der Halteklammern.
Further advantages and features of the invention result from the following with reference to Exemplary embodiments described in the drawings. It shows:
  • FIG. 1 shows a side view of an armrest according to the invention,
  • FIG. 2 shows the section AA from FIG. 1,
  • FIG. 3 shows the section BB from FIG. 1,
  • FIG. 4 shows the section CC from FIG. 1,
  • 5 shows the section DD from FIG. 1, and
  • Figure 6 is a representation of a special embodiment of the support bracket when its material is harder than that of the retaining clips.

In Fig. 1 ist der Trägerbügel 1 dargestellt, der aus einem U-förmig gebogenen Rohr besteht, das, wie aus Fig. 2 und 3 ersichtlich, ovalen Querschnitt aufweist. Das Rohr ist auf seiner Breitseite gebogen und es ergeben sich die zwei aufwärts weisenden Schenkel 5, 6.In Fig. 1, the support bracket 1 is shown, which consists of a U-shaped tube which, as can be seen from Figs. 2 and 3, has an oval cross-section. The tube is bent on its broad side and there are two legs 5, 6 pointing upwards.

Die Armauflage besteht aus einem Armträger 2, der in bekannter Weise mit einem geeignet geformten Polster 17, vorzugsweise einem Integralschaum, umkleidet ist. Der Armträger 2 besteht aus Flachmaterial, vorzugsweise Stahlblech oder Kunststoff, das im Armauflagebereich K profiliert ist. Wie aus Fig. 4 ersichtlich, ist hier ein 3-U-Profil gewählt. Die Profilierung und Auslegung des Flachmaterials ist derart, dass es die einwirkenden Armabstützkräfte ohne Deformation auf den Trägerbügel 1 überträgt. Der Armträger 2 ist hier also biegesteif.The armrest consists of an arm support 2, which is covered in a known manner with a suitably shaped cushion 17, preferably an integral foam. The arm support 2 consists of flat material, preferably sheet steel or plastic, which is profiled in the arm support area K. As can be seen from FIG. 4, a 3-U profile is selected here. The profiling and design of the flat material is such that it transmits the arm support forces acting on the support bracket 1 without deformation. The arm support 2 is therefore rigid.

An den nach unten weisenden Enden läuft die Profilierung in die Materialdicke aus, es ist hier also keine Profilierung mehr vorgesehen. Damit ergeben sich die Verbindungsstücke 3, 4, die senkrecht zu ihrer Breitseite wegen des fehlenden Profils biegeweich sind, also in horizontaler Richtung relativ leicht verbogen werden können. Sie passen sich daher selbständig bei der Montage den auftretenden Fertigungstoleranzen an, welche bei den Schenkeln 5, 6 des Trägerbügels 1, oder beim Abstand der Ver-. bindungsstücke 3, 4 des Armträgers 2 auftreten können. Richt- bzw. Anpassungsarbeiten sind also nicht erforderlich.At the ends pointing downwards, the profiling ends in the material thickness, so there is no longer any profiling here. This results in the connecting pieces 3, 4, which are pliable perpendicular to their broad side because of the missing profile, that is to say can be bent relatively easily in the horizontal direction. They therefore adapt automatically during assembly to the manufacturing tolerances that occur, which occur with the legs 5, 6 of the support bracket 1, or with the spacing of the connections. Binding pieces 3, 4 of the arm support 2 can occur. Straightening or adjustment work is therefore not necessary.

In dieser Form kann der Armträger 2 sehr kostengünstig gestanzt und gepresst werden. Auch Guss bzw. Spritzguss von Kunststoff ist möglich.In this form, the arm support 2 can be punched and pressed very inexpensively. Casting or injection molding of plastic is also possible.

Die Montage erfolgt einfach und kostengünstig, indem man die Verbindungsstücke 3, 4 des Armträgers 2 von Hand oder maschinell in die Schenkelöffnungen 7, 8 des Trägerbügels 1 einsteckt.Installation is simple and inexpensive by inserting the connecting pieces 3, 4 of the arm support 2 into the leg openings 7, 8 of the support bracket 1 by hand or by machine.

Um einen festen Sitz des Armträgers 2 im Trägerbügel 1 zu gewährleisten, sind die Verbindungsstücke 3, 4 im Randbereich des Trägerbügels symmetrisch keilförmig ausgebildet, wobei die Breite des Keiles von einem Wert oberhalb auf einen Wert unterhalb des Wertes des Innendurchmessers des aufnehmenden Teils der Schenkelöffnungen 7, 8 des Trägerbügels 1 abnimmt. Im Fall des Ovalquerschnitts gemäss Fig. 2, 3 ist dieser Innendurchmesser also der grösste auftretende Innendurchmesser, bzw. der Abstand der beiden Schmalseiten, die den aufnehmenden Teil der Schenkelöffnungen 7, 8 bilden. Durch die symmetrisch keilförmige Ausbildung der Verbindungsstücke 3, 4 werden wiederum die Anforderungen an die Fertigungstoleranzen reduziert.In order to ensure a firm fit of the arm support 2 in the support bracket 1, the connecting pieces 3, 4 are symmetrically wedge-shaped in the edge region of the support bracket, the width of the wedge from a value above to a value below the value of the inside diameter of the receiving part of the leg openings 7 , 8 of the support bracket 1 decreases. In the case of the oval cross section according to FIGS. 2, 3, this inside diameter is therefore the largest inside diameter that occurs, or the distance between the two narrow sides that form the receiving part of the leg openings 7, 8. The symmetrical wedge-shaped design of the connecting pieces 3, 4 in turn reduces the requirements on the manufacturing tolerances.

Des weiteren bewirkt der Keil eine vorteilhafte Verkeilung der Verbindungsstücke 3, 4 in den Schenkelöffnungen 7, 8 des Trägerbügels 1, insbesondere wenn der Steigungswinkel des Keiles kleiner ist als der Reibungswinkel bzw. der Reibungskoeffizient der Werkstoffpaarung VerbindungsstückelTrägerbügel. Bei der Paarung Eisen/Stahl müsste der Winkel also kleiner als 8 Grad sein. Dann entsteht bekanntlich nach den Gesetzen der technischen Mechanik von selbst ein Festsitz.Furthermore, the wedge brings about an advantageous wedging of the connecting pieces 3, 4 in the leg openings 7, 8 of the support bracket 1, in particular if the pitch angle of the wedge is smaller than the friction angle or the friction coefficient of the material pairing of the connection piece support bracket. For the pairing iron / steel, the angle should therefore be less than 8 degrees. Then, as is well known, a tight fit is created automatically according to the laws of technical mechanics.

Da einerseits der Keil masslich Fertigungstoleranzen aufweist und andererseits auch der Innendurchmesser des Trägerbügels 1, dringen die Verbindungsstücke 3, 4 je nach Massgegebenheit unterschiedlich tief in die Schenkelöffnungen 7, 8 ein. Dadurch würde zwischen dem Polster 17 und dem Trägerbügel 1 ein ästhetisch störender Spalt entstehen. Um das zu verhindern, weist das Polster 17 in vorteilhafter Weise eine den Uebergang der Verbindungsstücke 3, 4 in die Schenkelöffnungen 7, 8 des Trägerbügels 1 abdeckende, umlaufende Lippe 18 auf.Since on the one hand the wedge has considerable manufacturing tolerances and on the other hand also the inside diameter of the support bracket 1, the connecting pieces 3, 4 penetrate into the leg openings 7, 8 to different depths, depending on the dimensions. This would create an aesthetically disturbing gap between the cushion 17 and the support bracket 1. To prevent this, the pad 17 advantageously has a circumferential lip 18 covering the transition of the connecting pieces 3, 4 into the leg openings 7, 8 of the carrier bracket 1.

Um auch bei dynamischen Belastungen, oder wenn das Sitzmöbel ruckartig an der Armlehne angehoben wird, einen Festsitz zu gewährleisten, sind des weiteren an.den innerhalb der Schenkel 5, 6 des Trägerbügels 1 sitzenden Enden der Verbindungsstücke 3, 4 jeweils federnde Halteklammern 9, 10 vorgesehen. Sie bestehen bevorzugt aus Federstahl oder einem Material mit federnden Eigenschaften, und stützen sich einerseits an den Verbindungsstücken 3, 4 und andererseits an der Innenwand der Schenkel 5, 6 des Trägerbügels 1 ab.In order to ensure a tight fit even under dynamic loads, or when the seating furniture is jerkily raised on the armrest, the ends of the connecting pieces 3, 4, which are seated within the legs 5, 6 of the support bracket 1, each have resilient retaining clips 9, 10 intended. They are preferably made of spring steel or a material with resilient properties, and are supported on the one hand on the connecting pieces 3, 4 and on the other hand on the inner wall of the legs 5, 6 of the support bracket 1.

In der in Fig. 1, links, Fig. 2 und Fig. 4 dargestellten Ausführungsform umfasst die Halteklammer 9 nur einen Federbund, der sich zwischen Verbindungsstück "3 und der Innenwand der Schenkelöffnung 7 abstützt. Ein federnder Schenkel der Halteklammer 9 umschliesst das Ende des Verbindungsstückes 3, und der zweite Schenkel stützt sich an der Innenwand ab. Durch die erheblichen Federkräfte des abstützenden Schenkels wird das Verbindungsstück 3 an seinem Ende entgegengesetzt gedrückt und im Rohrquerschnitt wirksam verkeilt. Dadurch werden die Toleranzen zwischen dem Rohrinnendurchmesser und den Enden des Verbindungsstückes 3 passungsmässig selbsttätig ausgeglichen, und es entsteht unterhalb des Keiles ein zweiter spielfreier Sitz. Um diesen Sitz definiert am Ende des Verbindungsstückes 3 zu erreichen, ist dieses oberhalb des Endes schmal gehalten, und nur das Ende selbst weist einen Wert auf, der etwas kleiner ist als der kleinste Wert des grössten auftretenden Innendurchmessers des Profilrohres. Eine solche Ausbildung ist in Fig. 4 dargestellt.In the embodiment shown in Fig. 1, left, Fig. 2 and Fig. 4, the retaining clip 9 comprises only a spring collar, which is supported between the connector " 3 and the inner wall of the leg opening 7. A resilient leg of the retaining clip 9 encloses the end of the The connecting piece 3 is pressed against the end and effectively wedged in the pipe cross-section by the considerable spring forces of the supporting leg and the tolerances between the pipe inside diameter and the ends of the connecting piece 3 are fit automatically balanced, and there is a second play-free seat below the wedge. In order to reach this seat at the end of the connecting piece 3, this is kept narrow above the end, and only the end itself has a value which is slightly smaller than that smallest value of the largest occurring inside diameter of the profile pipe. Such an embodiment is shown in FIG. 4.

Um den Festsitz im Keilbereich und am unteren Ende noch zu verstärken, weist die Halteklammer 9 einerseits Widerhaken 14 auf, und andererseits eine Haltenase 13, welche in eine Oeffnung des Verbindungsstückes 3 eingreift. Die schräg nach oben gerichteten Widerhaken 14 stören nicht, wenn der Armträger 2 in die Schenkelöffnung 7 eingeschoben wird. Sie krallen sich jedoch in der Wandung des Rohres fest, wenn der Armträger 2 nach oben gezogen wird, sofern das Material des Widerhakens 14 härter ist als das des Trägerbügels 1. Das ist der Fall, wenn die Halteklammer 9 aus Federstahl, der Trägerbügel 1 aber aus üblichem Stahl besteht. Die Haltenase 13 gewährleistet, dass bei einem Austausch des Armträgers 2 die Halteklammer 9 auf jeden Fall mit aus der Schenkelöffnung 7 herausgezogen wird und ggfs. ersetzt werden kann.Around the tight fit in the wedge area and at the bottom To reinforce the end, the retaining clip 9 has barbs 14 on the one hand, and a retaining lug 13 on the other hand, which engages in an opening of the connecting piece 3. The obliquely upward barbs 14 do not interfere when the arm support 2 is inserted into the leg opening 7. However, they cling to the wall of the tube when the arm support 2 is pulled upwards, provided that the material of the barb 14 is harder than that of the support bracket 1. This is the case when the retaining clip 9 is made of spring steel, but the support bracket 1 consists of common steel. The retaining lug 13 ensures that when the arm carrier 2 is replaced, the retaining clip 9 is in any case also pulled out of the leg opening 7 and can be replaced if necessary.

In Fig. 1, rechts, Fig. 3 und Fig. 5 weist die Halteklammer 10 zwei Federbünde auf, die sich beidseits des Verbindungsstückes 4 an der Rohrwandung des Trägerbügels 1 abstützen. Der äussere Schenkel jedes Federbundes weist wiederum Widerhaken 14 auf, die sich in die Wandung des Trägerbügelrohres einkrallen. Haltenasen 13, die in korrespondierende Oeffnungen des Verbindungsstückes 4 eingreifen, fixieren die Halteklammer 10 am Verbindungsstück 4 wie vorstehend in bezug auf die Halteklammer 9 geschildert.In Fig. 1, right, Fig. 3 and Fig. 5, the retaining clip 10 has two spring collars, which are supported on both sides of the connector 4 on the tube wall of the bracket 1. The outer leg of each spring collar in turn has barbs 14 which claw into the wall of the support bracket tube. Holding lugs 13, which engage in corresponding openings of the connecting piece 4, fix the holding clip 10 on the connecting piece 4 as described above with respect to the holding clip 9.

Die Ausführungsform mit den zwei Federbünden der Halteklammer 10 bewirkt eine noch grössere Haltekraft als die Halteklammer 9 mit nur einem Federbund. Es wird hier jedoch das Verbindungsstück 4 in der Mitte des Trägerbügelrohres festgehalten, also nicht wie in Fig. 2 an die Rohrinnenwand gedrückt und dort verkeilt. Um dennoch einen spielfreien Sitz und Toleranzausgleich zu erreichen, ist nach einem weiteren Gedanken der Erfindung das untere Ende des Verbindungsstückes 4 etwas breiter als der grös-. ste auftretende Innendurchmesser des Trägerbügelrohres ausgeführt, und in dem Ende ein Längsschlitz 12 vorgesehen. Das ist in Fig. 5 dargestellt. Damit können die beiden entstandenen Endteile des Verbindungsstückes 4 federnd zur Mitte hin ausweichen und verkeilen sich mit der Grösse der Federkraft beidseitig gegen die Rohrwandung.The embodiment with the two spring collars of the holding clip 10 brings about an even greater holding force than the holding clip 9 with only one spring collar. However, here the connecting piece 4 is held in the middle of the support bracket tube, that is to say not pressed against the inner wall of the tube as in FIG. 2 and wedged there. In order to nevertheless achieve a play-free fit and tolerance compensation, the lower end of the connecting piece 4 is somewhat wider than the larger one according to a further idea of the invention. ste occurring inner diameter of the support bracket tube executed, and provided in the end a longitudinal slot 12. This is shown in Fig. 5. This allows the two end parts of the connecting piece 4 to deflect resiliently towards the center and wedge against the pipe wall on both sides with the magnitude of the spring force.

Wie schon erwähnt, kann der Armträger ausser aus Stahl auch aus Kunststoff hergestellt werden, vorzugsweise durch Spritzgiessen. Das ist besonders dann sinnvoll und kostengünstig, wenn auf eine polsternde Umhüllung verzichtet wird, und die ganze Armauflage aus einem Stück besteht. Die Verbindungsstücke 3, 4 sind dann Teil der Armauflage selbst.As already mentioned, the arm support can also be made of plastic in addition to steel, preferably by injection molding. This is particularly useful and cost-effective when there is no upholstery covering and the entire armrest is made of one piece. The connectors 3, 4 are then part of the armrest itself.

Auch die Halteklammer 9, 10 können aus z. B. Kunststoff hergestellt werden. Sie können bei einem Kunststoff-Armträger mit angeformt werden, so dass die Zahl der Einzelteile weiter reduziert wird. Da sich in diesem Fall die Widerhaken 14 des weicheren Kunststoffs in der Metallwand des Trägerbügels 1 nicht verkrallen könnten, sind nach einem weiteren Gedanken der Erfindung in dessen Innenwand Ausnehmungen 15 in Form von Einprägungen oder kleinen Aussparungen vorgesehen, in welche die Widerhaken 14 eingreifen.The retaining clip 9, 10 can be made from z. B. plastic. They can also be molded onto a plastic arm support so that the number of individual parts is further reduced. Since in this case the barbs 14 of the softer plastic could not catch in the metal wall of the carrier bracket 1, according to a further idea of the invention, recesses 15 in the form of impressions or small recesses are provided in the inner wall thereof, in which the barbs 14 engage.

Gemäss Fig. 1 und 4 ist an der Basis des Trägerbügels 1 der Querträger 11, mittels dessen die erfindungsgemässe Armlehne am Sitz des Sitzmöbels befestigt wird, vorzugsweise durch Schweissen angebracht. Nach einem weiteren Gedanken der Erfindung bestehen nun sowohl der Trägerbügel 1 als auch der Querträger 11 aus U-förmig gebogenem Profilrohr mit ovalem Querschnitt, das auf seiner Breitseite gebogen ist. Die Schenkelöffnung 16 des Querträgers 11 ist an die Unterseite der Basis des Trägerbügels 1 stoffschlüssig angebunden. Auf diese Weise gelangt die Verbindung beider Teile, also die Schweissnaht, aus dem Sichtbereich des Benutzers des Sitzmöbels, und brauch - im Gegensatz zum eingangs diskutierten Stand der Technik - nicht nachgearbeitet, also z. B. verputzt werden.1 and 4, the cross member 11, by means of which the armrest according to the invention is fastened to the seat of the seating furniture, is preferably attached to the base of the support bracket 1 by welding. According to a further idea of the invention, both the support bracket 1 and the cross member 11 now consist of a U-shaped profile tube with an oval cross section, which is bent on its broad side. The leg opening 16 of the cross member 11 is integrally bonded to the underside of the base of the support bracket 1. In this way, the connection of the two parts, that is, the weld seam, comes out of the sight of the user of the seating furniture and, in contrast to the prior art discussed at the outset, does not need to be reworked, that is to say, B. be plastered.

Die erfindungsgemässe Armlehne ist speziell für Bürositzmöbel mit zentraler Standsäule geeignet, bei welchen Ringlehnen mit Vorzug eingesetzt werden.The armrest according to the invention is particularly suitable for office seating furniture with a central pedestal, in which ring armrests are preferably used.

Statt die Armlehne mittels des Querträgers 11 am Sitz zu befestigen, kann die Armlehne auch direkt am Sitz befestigt werden.Instead of attaching the armrest to the seat by means of the cross member 11, the armrest can also be attached directly to the seat.

Claims (12)

1. Armrest for seat furniture, especially for office seat furniture with a central standing column, with a U-shaped supporting bracket (1) with a tubular cross-section and two legs (5, 6) pointing upwards, and with an arm support (2) having two connecting pieces (3, 4) which point downwards and which engage into the leg orifices (7, 8) of the legs (5, 6) of the supporting bracket (1), characterised in that the arm support (2) is made flexurally rigid in the arm-resting region (K) and flexurally pliable at the connecting pieces (3, 4), in that the connecting pieces (3, 4) are made symmetrically wedge-shaped in the edge region of the supporting bracket (1), the width of the wedge decreasing from a value above to a value below the value of the inside diameter of the receiving part of the leg orifices (7, 8) of the supporting bracket (1), and in that there is at the end of each of the connecting pieces (3, 4), which is located within the appropriate leg (5, 6) of the supporting bracket (1), a resilient retaining clip (9, 10) which is supported, on the one hand, on the connecting piece (3, 4) and, on the other hand, on the inner wall of the appropriate leg (5, 6) of the supporting bracket (1).
2. Armrest according to Claim 1, characterised in that the tubular supporting bracket (1) has a circular, rectangular or oval inner cross-section, and the connecting pieces (3, 4) consist of flat material, the broad side of which is perpendicular to the longitudinal direction of the arm support (2).
3. Armrest according to Claim 2, characterised in that the arm support (2) consists of flat material which is profiled in the arm-resting region and non-profiled at its ends.
4. Armrest according to Claim 3, characterised in that the arm support (2) is a one-piece stamped, pressed or cast article made of metal or plastic.
5. Armrest according to Claim 2, characterised in that the retaining clips (9) each comprise only one spring band which is supported between one side of the connecting piece (3, 4) and the inner wall of the supporting bracket (1), and the width of each of the connecting pieces (3, 4) has the greatest value at the end, but this is less than the largest inside diameter of the supporting bracket (1
6. Armrest according to Claim 2, characterised in that the retaining clips (10) each comprise two spring bands which are supported on the inner wall of the supporting bracket (1) on both sides of the connecting pieces (3, 4), and the width of each of the connecting pieces (3, 4) has the greatest value at the end, and this is also greater than the largest inside diameter of the supporting bracket (1), the connecting pieces (3, 4) having a longitudinal slot (12) in the centre.
7. Armrest according to Claims 5 or 6, characterised in that the retaining clips (9, 10) have retaining noses (13) which engage into matching orifices in connecting pieces (3, 4), and have barbs (14) which engage by means of their clips on the inner walls of the supporting bracket (1) in the direction of the leg orifices (7, 8).
8. Armrest according to Claim 7, characterised in that the retaining clips (9,10) consist of spring steel.
9. Armrest according to Claim 7, characterised in that the retaining clips (9, 10) consist of a material which is softer than that of the supporting bracket (1) and in the inner wall of the supporting bracket (1) there are recesses (15) into which the barbs (14) of the retaining clips (9, 10) can engage.
10. Armrest according to one of the preceding claims, characterised in that the angle of slope of the cone of the connecting pieces (3, 4) is smaller than the angle of friction of the material pairing of the connecting pieces (3, 4) and supporting bracket (1).
11. Armrest according to one of the preceding claims, characterised in that the supporting bracket (1) is connected at its base to a cross member (10) which can be fastened to the seat of the seat furniture, and both the supporting bracket (1) and the cross member (11) consist of a U-shaped profile tube having an oval cross-section and bent on its broad side, and the material connecting the leg orifice (16) of the cross member (11) to the underside of the base of the supporting bracket (1) is continuous.
12. Armrest according to one of the preceding claims, characterised in that the arm support (2) has, at the point of entry of the connecting pieces (3, 4) into the leg orifices (7, 8) of the supporting bracket (1), a continuous lip which masks the transition.
EP82710021A 1982-04-03 1982-04-03 Armrest for sitting furniture Expired EP0090905B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP82710021A EP0090905B1 (en) 1982-04-03 1982-04-03 Armrest for sitting furniture
AT82710021T ATE14656T1 (en) 1982-04-03 1982-04-03 ARMREST FOR SEATING.
DE8282710021T DE3265176D1 (en) 1982-04-03 1982-04-03 Armrest for sitting furniture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82710021A EP0090905B1 (en) 1982-04-03 1982-04-03 Armrest for sitting furniture

Publications (2)

Publication Number Publication Date
EP0090905A1 EP0090905A1 (en) 1983-10-12
EP0090905B1 true EP0090905B1 (en) 1985-08-07

Family

ID=8190019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82710021A Expired EP0090905B1 (en) 1982-04-03 1982-04-03 Armrest for sitting furniture

Country Status (3)

Country Link
EP (1) EP0090905B1 (en)
AT (1) ATE14656T1 (en)
DE (1) DE3265176D1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3075810A (en) * 1960-12-19 1963-01-29 George N Kitsopoulos Multiple purpose chair
GB2047528A (en) * 1979-04-03 1980-12-03 Vessa Ltd Wheelchair having a detachable armrest

Also Published As

Publication number Publication date
EP0090905A1 (en) 1983-10-12
DE3265176D1 (en) 1985-09-12
ATE14656T1 (en) 1985-08-15

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