DE2361010C3

DE2361010C3 - Spring bodies for seating furniture, in particular in motor vehicles

Info

Publication number: DE2361010C3
Application number: DE19732361010
Authority: DE
Inventors: Manfred 6081 Geinsheim; Desch Kurt 6091 Weilbach Duvenkamp
Original assignee: Adam Opel GmbH
Current assignee: Adam Opel GmbH
Filing date: 1973-12-07
Publication date: 1976-05-20

Description

23 61 ΟΙΟ23 61 ΟΙΟ

den gegenüberliegenden Enden jeder Flachfeder angeordnete Stützbügel beginnend an der Rahmenbefevtigungsstelle jeweils einen ersten etwa rechtwinklig zur Flachfeder abgewinkelten Federabschnitt aufweisen, dem sich ein im Bereich der zweiten Befestigungsstelle spitz abgewinkelter weiterer, das S:ützbügeldreieck schließender, mit dem den Polsterkörper überspannenden Flachfederstück verbundener Federabschnitt anschließt, welcher an der Verbindungsstelle in einen entgegengesetzt gerichteten parallel zu dem weiteren Federabschnitt verlaufenden Abschnitt übergeht, der an der zweiten Befestigungsstclle für den Randdraht endet. Ein derartiger Verlauf der Flachfeder im Bereich des Stützbügels, der in dem weiteren das Stützbügeldreieck schließenden Federabschnitt einen Doppelverlauf der Flachfeder mil Phasenversatz mit sich bringt, trägt wesentlich zu einer erhöhten Stabilität des Stützbügels und damit einer Verbesserung des Seitenhalies bei, den der gesamte Federkörper dem Sitzmöbelbenutzer bietet. Hierzu kommt eine verbesserte Aufhängung der Flachfedern, nämlich an jeweils zwei freien Ecken des Stützbügel-Dreiecks.the opposite ends of each flat spring arranged support bracket starting at the frame attachment point each have a first spring section angled approximately at right angles to the flat spring, to which there is another acute angled in the area of the second fastening point, the S: ützbügeldreieck a closing spring section connected to the flat spring piece spanning the upholstery body, which at the junction in an oppositely directed parallel to the other Spring section extending section passes over to the second fastening post for the edge wire ends. Such a course of the flat spring in the area of the Support bracket, which in the further spring section closing the support bracket triangle has a double course Flat spring mil phase offset brings with it, contributes significantly to an increased stability of the support bracket and thus an improvement in the side neck the entire spring body offers the seating furniture user. In addition, there is an improved suspension of the Flat springs, namely at two free corners of the support bracket triangle.

Zu diesem Zweck kann jede Flachfeder vorteilhaft beiderseits mit jeder in ihrer Erstreckungsebene liegenden, eine freie Ecke des Stützbügeldreiecks bildenden Befestigungsstelle mittels Klemmhülse an einem parallel zum Sitzmöbelrahmen angeordneten Randdraht und mit jeweils ihrer zweiten, eine weitere freie Ecke des Stützbügeldreiecks bildenden Befestigungsstelle oder dem von dieser im Abstand mindestens einer Federdrahthalbwelle benachbarten Ende des entgegengesetzt dem Federabschnitt verlaufenden Federabschnittes mittels Klemmhülse an dem weiteren teilweise mit dem Randdraht verbundenen, den Sitzmöbclrahinen zugeordneten Randdraht gehalten sein. Auch kann jede Flachfeder beiderseits mit jeder in ihrer Erstreckungsebene liegenden, eine freie Ecke des Stützbügeldreiccks bildenden Befestigungsstelle mit Hilfe zweier Haken am rahmenparallelen Randdrahl oder eines Doppelhakens am Sitzmöbelrahmen befestigt sein. Hierdurch ist in einfacher Weise eine wirtschaftliche Montage des gesamten Federkörpers möglich, der sich mühelos in den Rahmen einhängen läßt.For this purpose, each flat spring can advantageously be on both sides with each in its plane of extension lying, a free corner of the support bracket triangle forming attachment point by means of a clamping sleeve an edge wire arranged parallel to the seating furniture frame and with its second one, another free corner of the support bracket triangle forming fastening point or from this at least at a distance a spring wire half-shaft adjacent end of the opposite end of the spring section Spring section by means of a clamping sleeve on the further partially connected to the edge wire, the Edge wire associated with Sitzmöbclrahinen be held. Each flat spring can also be used on both sides with each in their plane of extension lying, a free corner of the support bracket triangle forming attachment point with With the help of two hooks on the edge beam parallel to the frame or a double hook on the seating furniture frame being. This enables economical assembly of the entire spring body in a simple manner possible, which can be easily hung into the frame.

Beispielsweise Ausführungen der Erfindung sind in den Zeichnungen dargestellt. Es zeigtExemplary embodiments of the invention are shown in the drawings. It shows

Fig.1 dai Gestell einer Kraftfahrzeugsitz-Rückenlehne mit teilweise dargestelltem Federkörper in perspektivischer Ansicht,Fig. 1 the frame of a motor vehicle seat backrest with partially shown spring body in perspective view,

F ig. 2 einen Teil des Federkörpers in einer vergrößerten perspektivischen Darstellung etwa nach einem Ausschnitt A in Fig. 1 mit teilweise angedeutetem Polsterkörper undFig. 2 shows a part of the spring body in an enlarged perspective illustration according to a section A in FIG. 1 with a partially indicated cushion body and

F ig. 3 ein weiteres Ausführungsbeispiel für die Federkörperaufhängung an Hand einer analogen Darstellung zu F ig. 2.Fig. 3 a further exemplary embodiment for the spring body suspension on the basis of an analogous one Representation in Fig. 2.

Die in Fig. 1 ungepolster: dargestellte Rückenlehne des Fahrzeugsitzes eines Personenkraftfahrzeuges besteht aus einem aus Rohr gebogenen Rahmen 10 mit Schwenkvorrichiung 11 und Querstrebe 12 an dem der aus fünf parallel die Polsterfläche überspannenden und an den Randdrähten 13, 13', 14. 14' gehaltenen wellenförmig gebogenen Flachfedern 15 gebildete Federkörper mittels die Randdrähte 13, 13' umgreifen-The unupholstered in Fig. 1: backrest shown the vehicle seat of a passenger vehicle consists of a frame 10 bent from pipe Schwenkvorrichiung 11 and cross strut 12 on which the of five parallel spanning the upholstery surface and held on the edge wires 13, 13 ', 14, 14' wave-shaped curved flat springs 15 formed spring body by means of the edge wires 13, 13 'encompass-

der Haken 16 befestigt ist. Die Flachfedern sind jeweils zu beiden Seilen der Rückenlehne einteilig als Stützbügel 15a geformt. Der einteilige Flachfederverlauf /ur Bildung dieses Siützbügels sei an Hand der vergrößerten Darstellung nach F ig. 2 erläutert: Die Flachfeder 15 erstreckt sich etwa in der Rückenlehnenebene an einer Seite bis zum Randdraht 13', wo sie mittels Klemmhülse 17 gehalten und gleichzeitig etwa rechtwinklig in den Abschnitt 15a abgebogen ist. der sich bis zu einer Klemmhülse 18 erstreckt. Dort folgt der Federverlauf in einem Abschnitt 15i> im spitzen Winkel zurück zur Ausgangsebene eier Flachfeder 15. wo der Abschnitt \5b mittels Klemmhülse 19 verankert und gleichzeitig derart umgelenkt ist, daß er parallel zu sich selbst, jedoch in entgegengesetzter Richtung als Abschnitt 15c über die Klemmhülse 18 bis zu der Klemmhülse 20 führt, welche die Befestigungsstellc am Randüraht 14' bildet. Eine weitere Klemmhülse 21 dient zusätzlich zur Verklammerung der beiden Federabschnitte 15ö, 15c Mit 22 ist ein Teil der den Federkörper abdeckenden Polsterung bezeichnet, die wie bei 23 angedeutet, jeweils mit einem Federkörper verbunden ist. Insoweit ist die Darstellung gegenüber dem Ausschnitt Λ in Fig. 1 etwas ergänzt.the hook 16 is attached. The flat springs are each molded in one piece as a support bracket 15a for both ropes of the backrest. The one-piece flat spring course / ur formation of this support bracket is based on the enlarged representation according to Fig. 2 explains: The flat spring 15 extends approximately in the backrest plane on one side to the edge wire 13 ', where it is held by means of a clamping sleeve 17 and at the same time is bent approximately at right angles into the section 15a. which extends as far as a clamping sleeve 18. There the spring course follows in a section 15i> at an acute angle back to the starting plane eier flat spring 15. where the section \ 5b is anchored by means of clamping sleeve 19 and at the same time deflected in such a way that it is parallel to itself, but in the opposite direction as section 15c over the Clamping sleeve 18 leads to the clamping sleeve 20, which forms the fastening position on the edge seam 14 '. Another clamping sleeve 21 additionally serves to clamp the two spring sections 15ö, 15c. 22 denotes part of the padding covering the spring body, which, as indicated at 23, is each connected to a spring body. In this respect, the illustration is somewhat supplemented compared to the section Λ in FIG. 1.

Der in einem weiteren Ausfühiungsbeispiel nach Fig. 3 gezeigte Federkörper unterscheidet sich gegenüber der Ausführung nach den Fig.l und 2 lediglich durch eine andere Art der Aufhängung am Rückenlehnenrahmen 110. Gleiche oder entsprechende Teile gegenüber den Fig.l und 2 sind hier mit gleichen, jedoch um 100 erhöhten Bezugs/ahlen versehen. Die Befestigung des durch an zwei beiderseitigen Randdrähten 114, 114' im Bereich ihrer Stüt/.bügel 115' verklammerten Flachfedern 115 gebildeten Federkurpers am Rahmen 110 erfolgt hier mit Hilfe von aus Draht gebogenen Doppelhaken 24, deren freie Enden jeweils bei 24' in entsprechende Löcher des Rahmens eingehängt sind und deren Lochende jeweils bei 24" bügelartig den Flachfederdraht umgreift.The spring body shown in a further exemplary embodiment according to FIG. 3 differs from that the embodiment according to Fig.l and 2 only by a different type of suspension on Backrest frame 110. The same or corresponding parts compared to Fig.l and 2 are here with same, but increased by 100 reference numbers Mistake. The fastening of the through to two edge wires 114, 114 'on both sides in the area of their stirrups 115 'clamped flat springs 115 formed spring body on the frame 110 takes place here with the aid of double hooks 24 bent from wire, the free ends of which are hooked into corresponding holes in the frame at 24 'and the end of the hole at 24 " Clasps around the flat spring wire like a bow.

Die Ausbildung der Federschleifen im jeweiligen Wellental 15" und Wellenberg 15" der Flachfedern 15 ist — wie Fig. I veranschaulicht — so getroffer, daß die Amplitude A einer Federdrahiwelle etwa ein Drittel der Wellenlänge entspricht, wobei der zwei Halbwcllen verbindende Federdrahiteil etwa quer zur Erstrekkungsrichtung 25 der Flachfeder 15 verläuft.The formation of the spring loops in the respective trough 15 "and wave crest 15 'of the flat springs 15 is - as Fig illustrated. I - so getroffer that the amplitude A is about one third of the wavelength corresponding to a Federdrahiwelle, wherein the two Halbwcllen connecting Federdrahiteil approximately transversely to the direction of extension 25 of the flat spring 15 runs.

Hierzu 3 Blatt ZeichnungenFor this purpose 3 sheets of drawings

Claims

Patent claims:

1. Spring body for seating furniture, especially in motor vehicles, consisting of several the The upholstered surface is spanned parallel to each other and is made of curved steel wire Flacle springs, the free ends of which form a support bracket attached to the seating furniture frame on both sides, which is integrally formed on at least one side of a flat spring and a forms a closed triangle, characterized in that both support brackets (15 ', 115') a flat spring triangular and each with two free corners of the triangle on Seating furniture frame (10, UO) and an edge wire arranged parallel to it or two parallel ones Edge wires (13,13 ', 14,14') are attached.

2. Spring body according to claim 1, characterized in that the on the opposite End of each flat spring (15, 115) arranged support bracket starting at the frame attachment point (17.24 ") each a first spring section (15a) angled approximately at right angles to the flat spring has, to which a further angled at a point in the area of the second fastening point (18), Closing the support bracket triangle, with the flat spring piece spanning the upholstery body (15, 115) connected spring section (156), which at the connection point (19) in one oppositely directed section running parallel to the further spring section (156) (15c) passes over, which ends at the second fastening point (20) with the edge wire (14, 14 ').

3. Spring body according to claims I and 2, characterized in that each flat spring (15, 115) on both sides with each lying in its extension plane, a free corner of the support bracket triangle forming fastening point by means of a clamping sleeve (17) on a parallel to the seating furniture frame (10) arranged edge wire (13, 13 ') and each with its second, another free corner of the Support bracket triangle forming fastening point (18) or at least one of these at a distance Spring wire half-shaft adjacent end of the opposite end of the spring section (156) extending Spring section (15c) by means of a clamping sleeve (20) on the other partially with the edge wire (13, 13 ') connected, the seating furniture frame associated edge wire (14, 14 ') is held.

4. Spring body according to claims 1, 2 and partially 3, characterized in that each Flat spring (15, 115) on both sides with each lying in its plane of extension, a free corner of the Support bracket triangle forming attachment point with the help of two hooks (16) on the frame parallel Edge wire (13.13 ') or a double hook (24) is attached to the seating furniture frame (110).

5. Spring body according to claim 4, characterized in that the hooks or Doppelhakcn (, 0 encompass the spring wire part connecting two spring wire half-shafts (24 ") and with their free bent ends (24 ') are hooked into openings in the seating furniture frame (110).

6s The invention relates to a spring body for seating furniture, as they are primarily arranged in motor vehicles, in particular passenger vehicles. Such Both the seat and the backrest located spring bodies usually consist of parallel over the Tensioned upholstery surface, made of wave-shaped curved Flat springs formed from steel wire, the free ends of which are attached to the seating furniture frame on both sides Form a support bracket, which is integrally formed on at least one rope and a flat spring in each case forms a closed triangle. The support brackets protrude from the flat spring plane and are intended for the seating furniture user offer good lateral support.

A well-known spring body of this type (German Auslegeschrift 15 54 029) consists of in parallel One-piece flat spring pairs spanning the padding area, each of which has a flat spring attached is formed in one piece as a support bracket only at one end. Such a support bracket can only be relatively small To absorb lateral forces and therefore only offer limited lateral support.

Another known spring body of this type (DT-OS Ib 54 322) has on both sides Free ends of the flat springs arranged support bracket in the form of spirally wound springs. the Production of such innerspring is complex and expensive. In addition, through the desired Resilience in the area of the support bracket favors buckling of the support springs, which is at the expense of a good lateral guidance of the spring core is possible.

Another from US-PS 29 Ib 087 known spring body consists of parallel to each other via a Frame tensioned flat springs, each at their free opposite ends with support bodies different designs are provided: and / was formed by the flat spring ends attached to one side of the frame an open one, the ends attached to the opposite side of the frame are closed! Triangle.

In practice, a spring body for the backrest of a motor vehicle seat is also known which spans the upholstery surface of wave-shaped curved flat springs that are parallel to each other and its free ends are connected to an edge wire hinged to the spring body frame and additionally by a support spring attached to a profiled sheet metal welded to the frame in the area of the flat springs forming a support bracket is reinforced.

In contrast, the invention aims to further develop and thus improve a spring body for seating furniture will be that its structure is simpler and its manufacture and assembly are cheaper simultaneous increase in the stability and support function of the support bracket.

According to the invention, this object is achieved in a Federköiper of the type explained at the beginning solved that both support brackets of a flat spring are triangular and each with one parallel to it arranged edge wire or two parallel edge wires are attached.

The particular advantage of this arrangement is that each flat spring is particularly stable is formed and sann support bracket is integrally preformed and preassembled for quick suspension in the frame or the components belonging to the frame are available.

In an advantageous embodiment of the invention, the can