EP1955613A1 - Suspension spring made from plastic or a plastic composite - Google Patents

Suspension spring made from plastic or a plastic composite Download PDF

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Publication number
EP1955613A1
EP1955613A1 EP08002393A EP08002393A EP1955613A1 EP 1955613 A1 EP1955613 A1 EP 1955613A1 EP 08002393 A EP08002393 A EP 08002393A EP 08002393 A EP08002393 A EP 08002393A EP 1955613 A1 EP1955613 A1 EP 1955613A1
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EP
European Patent Office
Prior art keywords
spring strip
longitudinal
strip according
webs
support surface
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Granted
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EP08002393A
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German (de)
French (fr)
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EP1955613B1 (en
Inventor
Siegbert Hartmann
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Individual
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Individual
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Priority to EP09008515.0A priority Critical patent/EP2105068B1/en
Publication of EP1955613A1 publication Critical patent/EP1955613A1/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C23/00—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases
    • A47C23/06—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using wooden springs, e.g. of slat type ; Slatted bed bases
    • A47C23/061—Slat structures
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C23/00—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases
    • A47C23/06—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using wooden springs, e.g. of slat type ; Slatted bed bases
    • A47C23/062—Slat supports
    • A47C23/068—Slat supports with additional supports between the ends of the slats

Definitions

  • the invention relates to a spring bar made of plastic or a plastic mixture for a slatted frame of a sitting or lying furniture, with in receiving pockets of supporting beams opposite endpoint bearings inserted insertion ends, an upwardly directed support surface and extending from the bottom downwardly extending longitudinal webs.
  • a disadvantage of this known elastic plastic strip is its relatively high weight, the large use of materials and the complex production, which is very time-consuming, costly and labor-intensive by the insertion of the reinforcing elements.
  • the object of the invention is to provide a spring bar available, which is considerably easier with significantly reduced material usage and still has a high load capacity and high stability with optimum suspension properties and which is also inexpensive to produce.
  • the achievable stability of the spring bar increases, with almost no contribution to increasing strength material, which would be located approximately in the region of a neutral plane, can be almost completely eliminated, which has a positive effect on the total weight to be processed amount of plastic and thus also beneficial to the economy.
  • a further optimization of the spring strip is possible by the selection of the material itself, be it from a pure plastic or a plastic mixture, which may be offset, for example with a fiber content.
  • a variation of the height of the intermediate webs thus allows the influencing of the suspension properties and the achievable stability of the spring bar in a particularly simple dimensions.
  • a one-piece spring strip can furthermore be produced in a two-part injection molding tool, with a dividing plane which is arranged approximately in the region of the support surface, so that its upwardly directed upper side in the installed state can also be provided with engravings, logos or other decorations in a simple manner can.
  • On the use of additional sliders in the tool can be completely dispensed with, thereby further improving the efficiency of the inventive spring bar drastically.
  • the various embodiments may have a variety of forms of support surfaces, they are curved slightly arcuately upwards, as in conventional wooden spring strips, or in one or more directions laterally or upwardly curled or completely flat and just trained.
  • the production as an injection molded part allows here a great freedom of design.
  • the spring bar can be designed to solve the task either in one piece or from several over the greater part of their total length extending components to form a one-piece bar whose components already form a firmly connected unit before installation in a sitting or lying furniture.
  • a preferred embodiment of a one-piece female connector has a bearing surface with a single or multiple surface recesses, portions of the longitudinal ridge or longitudinal ridges extending below these legislativenausappelgeber and the longitudinal ridge or longitudinal ridges there have a thickness that corresponds to the width of the mecanicnausEnglishungen maximum.
  • such an embodiment makes it possible to dispense with the use of additional slides in the injection molding tool.
  • a plurality of such surface recesses may be arranged behind and / or next to one another, with intermediate webs extending from the undersides of the bearing surface remaining therebetween up to the longitudinal struts.
  • These intermediate webs can have further, extending transversely to the longitudinal direction support webs that support the intermediate webs to improve the torsional strength of the entire spring bar.
  • a ceremoniesnaus disorders extends with or without interruptions from one to the other insertion end of a spring bar and extending below the support surface longitudinal ridge also continuously under the surface recess, preferably straight and extending in a horizontal plane.
  • the support surface for a mattress is thereby significantly reduced, which significantly improves their breathability, so that a moisture accumulation is completely avoided in resting on the support surface mattress.
  • the very broad in this embodiment formed longitudinal web also generates a very high resistance to deflection and against rotation of the spring bar when it is claimed by the action of an obliquely from above attacking force.
  • For further stabilization of the construction can be arranged centrally or eccentrically, transversely to the longitudinal direction extending intermediate webs in the space between the support surface and the longitudinal web; or, as in a further particularly preferred embodiment of the subject invention, be provided longitudinally displaceable hardness slide, which may be performed for example in a surface recess and in some or all possible operating positions have a mechanical contact with the top of the longitudinal strut.
  • a hardness adjustment is realized in a single spring bar, be it made in one piece or joined together from several components, which can be produced in other known embodiments of plastic or wooden spring strips only by the combination of multiple strips.
  • Another very advantageous embodiment of the subject of the inventive spring bar is formed in two parts, wherein the support surface is either completely closed or also provided with proceedingsnaus principles, but in which the longitudinally extending below the support surface longitudinal ridge separately prepared and then fixed under the support surface, whereby by a targeted Material selection, it is possible to influence the spring characteristics of the spring bar as desired or to vary the color scheme, with different colors of the initially separate longitudinal ridge may correspond to different degrees of hardness or spring characteristics of the spring bar thus produced.
  • connection is preferably carried out in the region of the intermediate webs, which can be material, form, frictionally and / or non-positively and which is advantageously designed as a snap-in connection, for which the spring bar below the receiving surface locking receptacles and the longitudinal web has end-side corresponding notches.
  • the spring strip 1, 11, 21, 31, 41 made of plastic or plastic mixture consists essentially of a support surface 9, 19, 29 with surface recesses 4, 14 and edge-side insertion ends 5, 15, 25 and at least one below the support surface 9, 19, 29 arranged longitudinal web 2, 12, 22, which is integrally formed or fixed via intermediate webs 3, 13, 23 on the underside of the support surface 9, 19, 29.
  • the support surface 9; 19, 29 has laterally narrow downwardly directed edge webs 6, 16, 26 over its length.
  • An embodiment of the spring bar 11, as in 3 and 4 has four longitudinally arranged ceremoniesnausEnglishept 14 and a vertically extending in the longitudinal direction of the plastic strip 11 longitudinal web 12 which is integrally formed in the areas in front of the insertion 15 on the underside of the support surface 19 and in the area between theinstitunausappel 14 via intermediate webs 13th , which are supported by transverse to the longitudinal direction support webs 18, is connected thereto.
  • the spaces between them constructively generated 17 contribute to the material savings, without having a negative effect on the component strength.
  • FIG. 5 shown variant of the spring bar 31 has over the length juxtaposed surface recesses 14, so that below and spaced from the support surface 19 of the spring bar 31 two parallel longitudinal webs 12 can be formed. Versions with further parallel or arbitrarily arranged congressnausEnglishept 14 and corresponding, also different widths, long and high longitudinal webs 12 are conceivable, but not shown in the drawing.
  • the solicitnausnaturalung 4 extends from a Einsteckende 5 to the opposite insertion end 5 of the support surface 9, wherein the foundednausappelung 4 extends to the lateral edge regions of the side webs 6, whereby a very wide longitudinal web 2 can be produced, in which the upper die an injection mold through theinstitunausappel 4 engages and with its front side the top of the longitudinal web 2 can produce.
  • the longitudinal ridge 2 may have a middle gutter, or as in Fig. 2 represented, be connected via two lateral intermediate webs 3 with the underside of the support surface 9, which can produce a very stable spatial structure.
  • a spring strip 1 as in Fig. 1 is shown, in an embodiment as in the aforementioned spring bar 41, an integrated hardness adjustment can be provided by 9 hardening slide 8 are inserted into the space 7 between the longitudinal web 2 and the underside of the support surface 8, which can be performed in theinstitunausEnglishung 4 and / or completely surround the support surface 9.
  • 9 hardening slide 8 are inserted into the space 7 between the longitudinal web 2 and the underside of the support surface 8, which can be performed in theinstitunausEnglishung 4 and / or completely surround the support surface 9.
  • gutter 3 in particular centrally halfway along the spring bar are provided.
  • FIG. 6 illustrated embodiment of the spring bar 21 may be formed in two parts, as in the Fig. 7 is shown.
  • the support surface 19 may also have surface recesses or, as shown, be equipped with a closed surface and the longitudinal web 22 may have in its end regions pin 24, which engage in journal receptacles 28 on the underside of the support surface 29.
  • the longitudinal web 22 may further consist of a different plastic material than the support surface 29 and the mutual connection material, form, friction or force-locking done. Also in this variant, it is possible, however, also not shown in the drawing, to provide centrally of the longitudinal web 22 or symmetrically arranged intermediate webs in order to achieve a further stiffening of the spring strip 21. Here too, further hardness slides can be inserted into the free space 27 between the underside of the support surface 29 and the longitudinal web 22.

Abstract

Plug-in ends (5) on the sides insert in holding pouches for final-point bearings fitted on spars. A supporting surface (9) is directed upwards. Longitudinal stays (2) extend downwards from their underside and run with a clearance from the underside of the support surface so as to connect to it by means of intermediate stays (3).

Description

Die Erfindung betrifft eine Federleiste aus Kunststoff oder einem Kunststoffgemisch für einen Lattenrost eines Sitz- oder Liegemöbels, mit in Aufnahmetaschen von an Tragholmen sich gegenüberliegend angeordneten Endpunktlagern einzuführenden Einsteckenden, einer nach oben gerichteten Auflagerfläche und sich von deren Unterseite nach unten erstreckenden Längsstegen.The invention relates to a spring bar made of plastic or a plastic mixture for a slatted frame of a sitting or lying furniture, with in receiving pockets of supporting beams opposite endpoint bearings inserted insertion ends, an upwardly directed support surface and extending from the bottom downwardly extending longitudinal webs.

Es ist eine elastische Kunststoffleiste für Lattenroste von Sitz- und Liegemöbeln bekannt, DE 42 27 17 C1 , die eine Auflagerfläche für Matratzen aufweist sowie an deren Unterseite in Leistenlängsrichtung verlaufende Verrippungsstege, die jeweils mit zusätzlichen Armierungselementen versehen sind.It is known an elastic plastic strip for slatted frames of seating and reclining furniture, DE 42 27 17 C1 , Which has a support surface for mattresses and extending at the bottom in strip longitudinal Verrippungsstege, which are each provided with additional reinforcing elements.

Nachteilig an dieser vorbekannten elastischen Kunststoffleiste ist ihr relativ hohes Gewicht, der große Materialeinsatz sowie die aufwändige Fertigung, welche durch das Einlegen der Armierungselemente sehr zeit-, kosten- und personalintensiv ist.A disadvantage of this known elastic plastic strip is its relatively high weight, the large use of materials and the complex production, which is very time-consuming, costly and labor-intensive by the insertion of the reinforcing elements.

Aufgabe der Erfindung ist es, eine Federleiste zur Verfügung zu stellen, die bei deutlich reduziertem Materialeinsatz erheblich leichter ist und trotzdem eine hohe Tragkraft und eine große Stabilität bei optimalen Federungseigenschaften aufweist und die zudem kostengünstig herstellbar ist.The object of the invention is to provide a spring bar available, which is considerably easier with significantly reduced material usage and still has a high load capacity and high stability with optimum suspension properties and which is also inexpensive to produce.

Die Lösung dieser Aufgabe erfolgt in Verbindung mit den Oberbegriffsmerkrnalen erfindungsgemäß aus den kennzeichnenden Merkmalen des Hauptanspruchs insbesondere dadurch, dass sich mindestens ein Längssteg nach unten erstreckt und dass der Längssteg oder die Längsstege von der Unterseite der Auflagerfläche beabstandet verlaufen und über Zwischenstege mit dieser verbunden sind.The solution of this object is achieved in conjunction with the Oberbegrftenmerkkrnalen according to the invention from the characterizing features of the main claim in particular by extending at least one longitudinal web down and that the longitudinal web or the longitudinal webs from the bottom of the support surface are spaced and connected via intermediate webs with this.

Mit steigendem Abstand der Längsstege von der Unterseite der Auflagerfläche erhöht sich die erzielbare Stabilität der Federleiste, wobei auf zur Festigkeitssteigerung wenig beitragendes Material, welches etwa im Bereich einer neutralen Ebene angesiedelt wäre, nahezu vollständig verzichtet werden kann, was sich positiv auf das Gesamtgewicht, die zu verarbeitende Kunststoffmenge und damit auch vorteilhaft auf die Wirtschaftlichkeit auswirkt. Eine weitere Optimierung der Federleiste ist durch die Auswahl des Materials selber möglich, sei es aus einem reinen Kunststoff oder einem Kunststoffgemisch, welches beispielsweise mit einem Faseranteil versetzt sein kann.With increasing distance of the longitudinal webs from the underside of the support surface, the achievable stability of the spring bar increases, with almost no contribution to increasing strength material, which would be located approximately in the region of a neutral plane, can be almost completely eliminated, which has a positive effect on the total weight to be processed amount of plastic and thus also beneficial to the economy. A further optimization of the spring strip is possible by the selection of the material itself, be it from a pure plastic or a plastic mixture, which may be offset, for example with a fiber content.

Eine Variation der Höhe der Zwischenstege erlaubt damit die Beeinflussung der Federungseigenschaften und der erzielbaren Stabilität der Federleiste in besonders einfachem Maße. Eine einteilige Federleiste lässt sich des Weiteren in einem zweiteiligen Spritzgusswerkzeug herstellen, mit einer Teilungsebene, die etwa im Bereich der Auflagerfläche angeordnet ist, so dass auch deren im Einbauzustand nach oben gerichtete Oberseite auf einfache Art und Weise mit Gravuren, Logos oder anderen Verzierungen versehen werden kann. Auf den Einsatz von zusätzlichen Schiebern im Werkzeug kann dabei vollständig verzichtet werden, wodurch sich die Wirtschaftlichkeit der erfinderischen Federleiste weiter drastisch verbessert. Bei einer aus mehreren Bauteilen zu einem einheitlichen Produkt zusammengefügten Federleiste lassen sich deren Einzelteile ebenfalls produktionstechnisch sowie hinsichtlich des Materialbedarfes und der Festigkeit besonders leicht optimieren.A variation of the height of the intermediate webs thus allows the influencing of the suspension properties and the achievable stability of the spring bar in a particularly simple dimensions. A one-piece spring strip can furthermore be produced in a two-part injection molding tool, with a dividing plane which is arranged approximately in the region of the support surface, so that its upwardly directed upper side in the installed state can also be provided with engravings, logos or other decorations in a simple manner can. On the use of additional sliders in the tool can be completely dispensed with, thereby further improving the efficiency of the inventive spring bar drastically. In a combined from several components to a single product spring bar whose individual parts are also very easy to optimize production technology and in terms of material requirements and strength.

Weitere vorteilhafte Ausgestaltungen des Gegenstandes der Erfindung ergeben sich mit und in Kombination aus den nachfolgenden Unteransprüchen.Further advantageous embodiments of the subject of the invention will become apparent with and in combination from the following subclaims.

Besonders vorteilhaft an der erfindungsgemäßen Federleiste ist zunächst, dass die verschiedenen Ausführungsformen die unterschiedlichsten Formen von Auflagerflächen aufweisen können, seien sie leicht bogenförmig nach oben gewölbt, wie bei üblichen Holzfederleisten, oder in eine oder mehrere Richtungen seitlich oder nach oben gewellt oder auch vollkommen eben und gerade ausgebildet. Die Herstellung als Spritzgussteil erlaubt hier eine weitgehende Gestaltungsfreiheit.Particularly advantageous to the spring bar according to the invention is first that the various embodiments may have a variety of forms of support surfaces, they are curved slightly arcuately upwards, as in conventional wooden spring strips, or in one or more directions laterally or upwardly curled or completely flat and just trained. The production as an injection molded part allows here a great freedom of design.

Die Federleiste kann zur Lösung der Aufgabe wahlweise einteilig oder auch aus mehreren mit sich über den Großteil ihrer Gesamtlänge erstreckenden Bauteilen zu einer einteiligen Leiste zusammengesetzt ausgebildet sein, deren Bauteile bereits vor dem Einbau in ein Sitz- oder Liegemöbel eine fest miteinander verbundene Baueinheit bilden.The spring bar can be designed to solve the task either in one piece or from several over the greater part of their total length extending components to form a one-piece bar whose components already form a firmly connected unit before installation in a sitting or lying furniture.

Eine bevorzugte Ausführungsform einer einteilig ausgebildete Federleiste besitzt eine Auflagerfläche mit einer einzelnen oder mehreren Flächenausnehmungen, wobei Teilbereiche des Längssteges oder der Längsstege unterhalb dieser Flächenausnehmungen verlaufen und der Längssteg oder die Längsstege dort ein Dickenmaß aufweisen, welches maximal dem Breitenmaß der Flächenausnehmungen entspricht. Insbesondere ermöglicht es eine solche Ausgestaltung, auf den Einsatz zusätzlicher Schieber im Spritzgusswerkzeug zu verzichten.A preferred embodiment of a one-piece female connector has a bearing surface with a single or multiple surface recesses, portions of the longitudinal ridge or longitudinal ridges extending below these Flächenausnehmungen and the longitudinal ridge or longitudinal ridges there have a thickness that corresponds to the width of the Flächenausnehmungen maximum. In particular, such an embodiment makes it possible to dispense with the use of additional slides in the injection molding tool.

Diese Flächenausnehmungen verhindern beispielsweise durch die bessere Durchlüftung einer auf den erfinderischen Federleisten aufliegenden Matratze vorteilhaft die Entstehung von Stockflecken. Ein weiterer sehr wesentlicher Vorteil solcher Flächenausnehmungen und der übrigen erfinderischen Konstruktion dieser Federleiste ist die insgesamt erzielbare Gewichtseinsparung bei jeder einzelnen Federleiste aber insbesondere beim fertigen Produkt. Dieses lässt sich während seiner Herstellung und seine Weiterverarbeitung wesentlich leichter und einfacher handhaben, ebenso wie es erhebliche Umweltvorteile mit sich bringt, da zum einen die vorhandenen Ressourcen geschützt werden und zum anderen der Transport der fertigen Waren einen geringeren Verbrauch von Transportenergie ermöglicht.These surface recesses prevent, for example, through the better ventilation of resting on the inventive spring strips mattress advantageous the formation of foxing. Another very significant advantage of such Flächenausnehmungen and the other inventive design of this spring bar is the overall achievable weight savings in each spring bar but especially in the finished product. This can be much easier and easier to handle during its manufacture and further processing, as well as it brings significant environmental benefits, since on the one hand, the existing resources are protected and on the other hand, the transport of finished goods allows a lower consumption of transport energy.

Gemäß einer besonders vorteilhaften Variante der Erfindung können mehrere solcher Flächenausnehmungen hinter- und/ oder nebeneinander angeordnet sein, wobei sich von den Unterseiten der dazwischen verbliebenen Auflagerfläche Zwischenstege bis zu den Längsstreben erstrecken. Diese Zwischenstege können zur Verbesserung der Torsionsfestigkeit der gesamten Federleiste weitere, sich quer zur Längsrichtung verlaufende Stützstege aufweisen, die die Zwischenstege abstützen.According to a particularly advantageous variant of the invention, a plurality of such surface recesses may be arranged behind and / or next to one another, with intermediate webs extending from the undersides of the bearing surface remaining therebetween up to the longitudinal struts. These intermediate webs can have further, extending transversely to the longitudinal direction support webs that support the intermediate webs to improve the torsional strength of the entire spring bar.

Entsprechend einer weiteren vorteilhaften Ausgestaltung des Gegenstandes der Erfindung erstreckt sich eine Flächenausnehmung mit oder ohne Unterbrechungen von einem bis zum anderen Einsteckende einer Federleiste und der unterhalb der Auflagerfläche verlaufende Längssteg ebenfalls durchgehend unter der Flächenausnehmung, vorzugsweise gerade und in einer horizontalen Ebene verlaufend. Die Auflagerfläche für eine Matratze wird dadurch deutlich verringert, was deren Durchlüftbarkeit wesentlich verbessert, sodass ein Feuchtigkeitsstau in einer auf der Auflagerfläche aufliegenden Matratze vollständig vermieden wird.According to a further advantageous embodiment of the subject invention, a Flächenausnehmung extends with or without interruptions from one to the other insertion end of a spring bar and extending below the support surface longitudinal ridge also continuously under the surface recess, preferably straight and extending in a horizontal plane. The support surface for a mattress is thereby significantly reduced, which significantly improves their breathability, so that a moisture accumulation is completely avoided in resting on the support surface mattress.

Der bei dieser Ausführungsform sehr breit ausgebildete Längssteg erzeugt zudem eine sehr hohe Festigkeit gegen eine Durchbiegung und gegen ein Verdrehen der Federleiste, wenn sie durch das Einwirken einer schräg von oben angreifenden Kraft beansprucht wird.The very broad in this embodiment formed longitudinal web also generates a very high resistance to deflection and against rotation of the spring bar when it is claimed by the action of an obliquely from above attacking force.

Zur weiteren Stabilisation der Konstruktion können in dem Freiraum zwischen der Auflagerfläche und dem Längssteg mittig oder außermittig, quer zur Längsrichtung verlaufende Zwischenstege angeordnet sein; oder, wie bei einer weiteren besonders bevorzugten Ausführungsform des Gegenstandes der Erfindung, längs verschiebbare Härteschieber vorgesehen sein, die beispielsweise in einer Flächenausnehmung geführt sein können und in einigen oder allen möglichen Betriebsstellungen einen mechanischen Kontakt mit der Oberseite der Längsstrebe aufweisen. Hierdurch wird in einer einzigen Federleiste, sei sie nun einteilig hergestellt oder aus mehreren Bauteilen zu einer einteiligen zusammengefügt, die Möglichkeit einer Härteverstellung verwirklicht, welche bei anderen bekannten Ausführungsformen von Kunststoff- oder Holzfederleisten nur durch die Kombination mehrerer Leisten erzeugt werden kann.For further stabilization of the construction can be arranged centrally or eccentrically, transversely to the longitudinal direction extending intermediate webs in the space between the support surface and the longitudinal web; or, as in a further particularly preferred embodiment of the subject invention, be provided longitudinally displaceable hardness slide, which may be performed for example in a surface recess and in some or all possible operating positions have a mechanical contact with the top of the longitudinal strut. As a result, the possibility of a hardness adjustment is realized in a single spring bar, be it made in one piece or joined together from several components, which can be produced in other known embodiments of plastic or wooden spring strips only by the combination of multiple strips.

Eine weitere sehr vorteilhafte Ausgestaltung des Gegenstandes der erfinderischen Federleiste ist zweiteilig ausgebildet, wobei die Auflagerfläche entweder vollständig geschlossen oder ebenfalls mit Flächenausnehmungen versehen ist, bei der jedoch der längs unterhalb der Auflagerfläche verlaufende Längssteg separat hergestellt und anschließend unter der Auflagerfläche festgelegt ist, wodurch durch eine gezielte Materialauswahl die Möglichkeit besteht, die Federeigenschaften der Federleiste beliebig zu beeinflussen oder auch die Farbgestaltung zu variieren, wobei unterschiedliche Farbgebungen des zunächst separaten Längssteges unterschiedlichen Härtegraden oder Federkennlinien der damit erzeugten Federleiste entsprechen kann.Another very advantageous embodiment of the subject of the inventive spring bar is formed in two parts, wherein the support surface is either completely closed or also provided with Flächenausnehmungen, but in which the longitudinally extending below the support surface longitudinal ridge separately prepared and then fixed under the support surface, whereby by a targeted Material selection, it is possible to influence the spring characteristics of the spring bar as desired or to vary the color scheme, with different colors of the initially separate longitudinal ridge may correspond to different degrees of hardness or spring characteristics of the spring bar thus produced.

Die Verbindung wird bevorzugterweise im Bereich der Zwischenstege durchgeführt, die stoff-, form-, reib- und/ oder kraftschlüssig erfolgen kann und die vorteilhafterweise als Rastverbindung ausgebildet ist, wozu die Federleiste unterhalb der Aufnahmefläche Rastaufnahmen und der Längssteg endseitige korrespondierende Rasten aufweist.The connection is preferably carried out in the region of the intermediate webs, which can be material, form, frictionally and / or non-positively and which is advantageously designed as a snap-in connection, for which the spring bar below the receiving surface locking receptacles and the longitudinal web has end-side corresponding notches.

Nachfolgend sind einige Ausführungsbeispiele der Erfindung anhand von Zeichnungen näher beschrieben. Es zeigen:

Fig. 1
eine einteilige Federleiste mit zwei verschiebbaren Härteschiebern in einer räumlichen Ansicht,
Fig. 2
eine einteilige Federleiste mit einem breiten Längssteg in einer räumlichen Ansicht von schräg unten,
Fig. 3
eine räumliche Darstellung einer Federleiste von schräg oben,
Fig. 4
eine räumliche Ansicht der Federleiste gem. Fig. 4 von schräg unten,
Fig.5
eine weitere Federleiste in einer räumlichen Ansicht von schräg unten,
Fig. 6
eine zusammengebaute zweiteilige Federleiste in räumlicher Ansicht von schräg unten und
Fig, 7
die Federleiste gem. Fig. 6 in einer Explosionsdarstellung.
Hereinafter, some embodiments of the invention are described in more detail with reference to drawings. Show it:
Fig. 1
a one-piece spring strip with two sliding hardness slides in a three-dimensional view,
Fig. 2
a one-piece spring bar with a wide longitudinal ridge in a spatial view obliquely from below,
Fig. 3
a spatial representation of a spring bar obliquely from above,
Fig. 4
a spatial view of the spring strip gem. Fig. 4 from diagonally below,
Figure 5
another spring strip in a three-dimensional view from below,
Fig. 6
an assembled two-piece spring strip in a spatial view obliquely from below and
Fig. 7
the spring strip gem. Fig. 6 in an exploded view.

Die Federleiste 1;11;21;31;41 aus Kunststoff oder Kunststoffgemisch besteht im Wesentlichen aus einer Auflagerfläche 9;19;29 mit Flächenausnehmungen 4;14 und randseitigen Einsteckenden 5;15;25 sowie mindestens einem unterhalb der Auflagerfläche 9;19;29 angeordneten Längssteg 2;12;22, der über Zwischenstege 3;13;23 an der Unterseite der Auflagerfläche 9;19;29 angeformt oder festgelegt ist. Die Auflagerfläche 9; 19;29 weist über ihre Länge seitlich schmale nach unten gerichtete Randstege 6;16;26 auf.The spring strip 1, 11, 21, 31, 41 made of plastic or plastic mixture consists essentially of a support surface 9, 19, 29 with surface recesses 4, 14 and edge-side insertion ends 5, 15, 25 and at least one below the support surface 9, 19, 29 arranged longitudinal web 2, 12, 22, which is integrally formed or fixed via intermediate webs 3, 13, 23 on the underside of the support surface 9, 19, 29. The support surface 9; 19, 29 has laterally narrow downwardly directed edge webs 6, 16, 26 over its length.

Eine Ausführungsform der Federleiste 11, wie sie in Fig. 3 und 4 dargestellt ist, besitzt vier in Längsrichtung angeordnete Flächenausnehmungen 14 sowie einen sich vertikal in Längsrichtung der Kunststoffleiste 11 verlaufenden Längssteg 12, der in den Bereichen vor den Einsteckenden 15 großflächig an der Unterseite der Auflagerfläche 19 angeformt ist und im Bereich zwischen den Flächenausnehmungen 14 über Zwischenstege 13, die mittels quer zur Längsrichtung verlaufenden Stützstegen 18 abgestützt sind, daran angeschlossen ist. Die dazwischen konstruktiv erzeugten Freiräume 17 tragen zur Materialeinsparung bei, ohne sich negativ auf die Bauteilfestigkeit auszuwirken.An embodiment of the spring bar 11, as in 3 and 4 has four longitudinally arranged Flächenausnehmungen 14 and a vertically extending in the longitudinal direction of the plastic strip 11 longitudinal web 12 which is integrally formed in the areas in front of the insertion 15 on the underside of the support surface 19 and in the area between the Flächenausnehmungen 14 via intermediate webs 13th , which are supported by transverse to the longitudinal direction support webs 18, is connected thereto. The spaces between them constructively generated 17 contribute to the material savings, without having a negative effect on the component strength.

Eine andere, in Fig. 5 gezeigte Variante der Federleiste 31 weist über die Länge nebeneinander angeordnete Flächenausnehmungen 14 auf, so dass unterhalb und beabstandet von der Auflagerfläche 19 der Federleiste 31 zwei parallel verlaufende Längsstege 12 ausgebildet werden können. Versionen mit weiteren parallel oder auch beliebig angeordneten Flächenausnehmungen 14 und entsprechenden, auch unterschiedlich breiten, langen und hohen Längsstegen 12 sind denkbar, aber zeichnerisch nicht dargestellt.Another, in Fig. 5 shown variant of the spring bar 31 has over the length juxtaposed surface recesses 14, so that below and spaced from the support surface 19 of the spring bar 31 two parallel longitudinal webs 12 can be formed. Versions with further parallel or arbitrarily arranged Flächenausnehmungen 14 and corresponding, also different widths, long and high longitudinal webs 12 are conceivable, but not shown in the drawing.

Bei einer Federleiste 41, wie sie in Fig. 2 dargestellt ist, reicht die Flächenausnehmung 4 von einem Einsteckende 5 bis zum gegenüber liegenden Einsteckende 5 der Auflagerfläche 9, wobei die Flächenausnehmung 4 sich bis zu den seitlichen Randbereichen an die Seitenstege 6 heran erstreckt, wodurch ein sehr breiter Längssteg 2 herstellbar ist, in dem das obere Werkzeug einer Spritzgussform durch die Flächenausnehmungen 4 hindurchgreift und mit seiner Stirnseite die Oberseite des Längssteges 2 erzeugen kann. Der Längssteg 2 kann über einen mittleren Zwischensteg, oder wie in Fig. 2 dargestellt, über zwei seitliche Zwischenstege 3 mit der Unterseite der Auflagerfläche 9 verbunden sein, wodurch sich ein sehr stabiles räumliches Gebilde erzeugen lässt.In a spring bar 41, as in Fig. 2 is shown, the Flächenausnehmung 4 extends from a Einsteckende 5 to the opposite insertion end 5 of the support surface 9, wherein the Flächenausnehmung 4 extends to the lateral edge regions of the side webs 6, whereby a very wide longitudinal web 2 can be produced, in which the upper die an injection mold through the Flächenausnehmungen 4 engages and with its front side the top of the longitudinal web 2 can produce. The longitudinal ridge 2 may have a middle gutter, or as in Fig. 2 represented, be connected via two lateral intermediate webs 3 with the underside of the support surface 9, which can produce a very stable spatial structure.

Bei einer Ausführungsform einer Federleiste 1, wie sie in Fig. 1 dargestellt ist, kann bei einer Ausgestaltung wie bei der vorgenannten Federleiste 41 eine integrierte Härteverstellung vorgesehen werden, indem in den Freiraum 7 zwischen dem Längssteg 2 und der Unterseite der Auflagerfläche 9 Härteschieber 8 eingesetzt werden, die in der Flächenausnehmung 4 geführt sein können und/ oder die Auflagerfläche 9 vollständig umgreifen. Auch hier kann zur weiteren Stabilisierung der Federleiste 1 ein zeichnerisch jedoch nicht dargestellter Zwischensteg 3, insbesondere mittig auf halber Länge der Federleiste vorgesehen werden.In one embodiment of a spring strip 1, as in Fig. 1 is shown, in an embodiment as in the aforementioned spring bar 41, an integrated hardness adjustment can be provided by 9 hardening slide 8 are inserted into the space 7 between the longitudinal web 2 and the underside of the support surface 8, which can be performed in the Flächenausnehmung 4 and / or completely surround the support surface 9. Again, for further stabilization of the spring strip 1 a drawing, however, not shown gutter 3, in particular centrally halfway along the spring bar are provided.

Eine in Figur 6 dargestellte Ausführungsform der Federleiste 21 kann zweiteilig ausgebildet sein, wie in der Fig. 7 dargestellt ist. Die Auflagerfläche 19 kann dabei ebenfalls Flächenausnehmungen aufweisen oder aber, wie dargestellt, mit einer geschlossenen Oberfläche ausgestattet sein und der Längssteg 22 kann in seinen Endbereichen Zapfen 24 aufweisen, die in Zapfenaufnahmen 28 an der Unterseite der Auflagerfläche 29 eingreifen. Der Längssteg 22 kann des Weiteren aus einem anderen Kunststoffmaterial bestehen als die Auflagerfläche 29 und die gegenseitige Verbindung stoff-, form-, reib- oder kraftschlüssig erfolgen. Auch bei dieser Variante ist es möglich, zeichnerisch jedoch ebenfalls nicht dargestellt, mittig des Längssteges 22 oder symmetrisch angeordnete Zwischenstege vorzusehen, um eine weitere Versteifung der Federleiste 21 zu erzielen. Auch hier können weitere Härteschieber in den Freiraum 27 zwischen der Unterseite der Auflagerfläche 29 und dem Längssteg 22 eingesetzt werden.An in FIG. 6 illustrated embodiment of the spring bar 21 may be formed in two parts, as in the Fig. 7 is shown. The support surface 19 may also have surface recesses or, as shown, be equipped with a closed surface and the longitudinal web 22 may have in its end regions pin 24, which engage in journal receptacles 28 on the underside of the support surface 29. The longitudinal web 22 may further consist of a different plastic material than the support surface 29 and the mutual connection material, form, friction or force-locking done. Also in this variant, it is possible, however, also not shown in the drawing, to provide centrally of the longitudinal web 22 or symmetrically arranged intermediate webs in order to achieve a further stiffening of the spring strip 21. Here too, further hardness slides can be inserted into the free space 27 between the underside of the support surface 29 and the longitudinal web 22.

Claims (10)

Federleiste aus Kunststoff oder einem Kunststoffgemisch für einen Lattenrost eines Sitz- oder Liegemöbels; mit in Aufnahmetaschen von an Tragholmen sich gegenüberliegend angeordneten Endpunktlagern einzuführenden Einsteckenden, einer nach oben-gerichteten Auflagerfläche und sich von deren Unterseite nach unten erstreckenden Längsstegen, dadurch gekennzeichnet, dass sich mindestens ein Längssteg (2;12;22) nach unten erstreckt und dass der Längssteg (2;12;22) oder die Längsstege (2;12; 22) von der Unterseite der Auflagerfläche (9;19;29) beabstandet verlaufen und über Zwischenstege (3;13;23) damit verbunden sind.Spring strip made of plastic or a plastic mixture for a slatted frame of a sitting or lying furniture; with insertion pockets to be introduced into receiving pockets of end-point bearings arranged opposite support beams, an upwardly directed support surface and longitudinal webs extending downwards from the underside, characterized in that at least one longitudinal web (2; 12; 22) extends downwards and that Longitudinal ridge (2; 12; 22) or the longitudinal webs (2; 12; 22) from the underside of the support surface (9; 19; 29) spaced and over intermediate webs (3; 13; 23) are connected thereto. Federleiste nach Anspruch 1, dadurch gekennzeichnet, dass die Auflagerfläche (9;19;29) leicht bogenförmig nach oben, in eine oder mehrere Richtungen gewellt, eben und/ oder gerade ausgebildet ist.A spring strip according to claim 1, characterized in that the bearing surface (9; 19; 29) is slightly curved upwards, corrugated in one or more directions, flat and / or straight. Federleiste einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass die Federleiste (1;11,21,31,41) einteilig oder aus sich über den Großteil ihrer Gesamtlänge erstreckenden Bauteilen mehrteilig zu einer fest miteinander verbundenen Baueinheit ausgebildet ist.A spring strip according to one of the preceding claims, characterized in that the spring strip (1; 11, 21, 31, 41) is designed in one piece or in a plurality of components extending over the major part of its total length to form a fixedly connected structural unit. Federleiste nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass die einteilig ausgebildete Federleiste (1:11;31;41) eine Auflagerfläche (9;19) mit einer Flächenausnehmung (4;14) oder mehreren Flächenausnehmungen (4;14) aufweist und Teilbereiche des Längssteges (2;12) oder der Längsstege (2;12) unterhalb davon verlaufen, die dort ein Dickenmaß aufweisen, welches maximal dem Breitenmaß der Flächenausnehmung (4;14) entspricht.A spring strip according to one of the preceding claims, characterized in that the integrally formed spring strip (1: 11; 31; 41) has a bearing surface (9; 19) with a surface recess (4; 14) or several surface recesses (4; 14) and partial regions of the longitudinal web (2; 12) or of the longitudinal webs (2; 12) extend below it, which have there a thickness dimension which corresponds at most to the width dimension of the surface recess (4; 14). Federleiste nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass sie Flächenausnehmungen (4;14) in Ihrer Auflagerfläche (9;19;29) aufweist und mehrere Flächenausnehmungen (4;14) hintereinander und/ oder nebeneinander in der Auflagerfläche (9;19;29) eingeformt sind und sich von den Unterseiten der dazwischen verbliebenen Auflagerflächen (9;19;29) Zwischenstege (3;13) bis zu den Längsstegen (2;12) erstrecken.A spring strip according to one of the preceding claims, characterized in that it has surface recesses (4; 14) in its support surface (9; 19; 29) and a plurality of surface recesses (4; 14) one behind the other and / or next to each other in the support surface (9; 29) are formed and extending from the lower sides of the remaining therebetween bearing surfaces (9; 19; 29) intermediate webs (3; 13) up to the longitudinal webs (2; 12). Federleiste nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass sich die Flächenausnehmungen (4;14) mit oder ohne Unterbrechungen von einem Einsteckende (5;15) bis zum anderen Einsteckende (5;15) und der Längssteg (2;12) sich durchgehend gerade in einer horizontalen Ebene verlaufend erstreckt.Spring strip according to one of the preceding claims, characterized in that the surface recesses (4, 14) with or without interruptions from one insertion (5; 15) to the other insertion (5; 15) and the longitudinal web (2; 12) are continuous extending straight in a horizontal plane extending. Federleiste nach Anspruch 6, dadurch gekennzeichnet, dass mittig und/ oder außermittig quer verlaufend angeordnete Zwischenstege (3;13) den Längssteg (2;12) mit der Auflagerfläche (9;19) der Federleiste (1:11:31:41) verbinden.A spring strip according to claim 6, characterized in that centrally and / or eccentrically transversely arranged intermediate webs (3, 13) connect the longitudinal web (2, 12) with the bearing surface (9, 19) of the spring strip (1: 11: 31: 41) , Federleiste nach einem der vorgenannten -Ansprüche, dadurch gekennzeichnet, dass in einem Freiraum (7;17) zwischen der Unterseite der Auflagerfläche (9;29) und der Oberseite des Längssteges (2;12) längsverschiebliche Härteschieber (8) eingesetzt sind.Spring strip according to one of the preceding claims, characterized in that longitudinally displaceable hardness slides (8) are inserted in a free space (7; 17) between the underside of the support surface (9; 29) and the upper side of the longitudinal web (2; Federleiste nach Anspruch 3, dadurch gekennzeichnet, dass eine mehrteilig ausgebildete Federleiste (21) eine Auflagerfläche (29) und einen Längssteg (22) aufweist und dass die Verbindung aus einer Rastverbindung besteht und mindestens die endseitigen Zwischenstege (23) mit Rastenaufnahmen (28) für Rasten (24) des Längssteges (22) ausgestattet sind.A spring strip according to claim 3, characterized in that a multipart spring bar (21) has a bearing surface (29) and a longitudinal web (22) and that the connection consists of a latching connection and at least the end-side intermediate webs (23) with detent recesses (28) for Rests (24) of the longitudinal web (22) are equipped. Federleiste nach Anspruch 9, dadurch gekennzeichnet, dass die Auflagerfläche (29) und der Längssteg (22) aus unterschiedlichen Kunststoffmaterialien gefertigt sind.Spring strip according to claim 9, characterized in that the bearing surface (29) and the longitudinal web (22) are made of different plastic materials.
EP20080002393 2007-02-12 2008-02-08 Suspension spring made from plastic or a plastic composite Not-in-force EP1955613B1 (en)

Priority Applications (1)

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EP09008515.0A EP2105068B1 (en) 2007-02-12 2008-02-08 Suspension spring made from plastic or a plastic composite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200720002219 DE202007002219U1 (en) 2007-02-12 2007-02-12 Plastic springy strip for a slatted frame on a piece of furniture like a seat or a reclining chair has plug-in ends to insert in holding pouches, a supporting surface and longitudinal stays

Related Child Applications (2)

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EP09008515.0A Division EP2105068B1 (en) 2007-02-12 2008-02-08 Suspension spring made from plastic or a plastic composite
EP09008515.0 Division-Into 2009-06-30

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EP1955613A1 true EP1955613A1 (en) 2008-08-13
EP1955613B1 EP1955613B1 (en) 2013-04-24

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EP09008515.0A Not-in-force EP2105068B1 (en) 2007-02-12 2008-02-08 Suspension spring made from plastic or a plastic composite

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US9839295B2 (en) 2014-04-24 2017-12-12 Ashley Furniture Industries, Inc. Drop in seat deck for furniture assemblies

Also Published As

Publication number Publication date
DE202007002219U1 (en) 2007-05-10
EP2105068B1 (en) 2013-10-09
EP1955613B1 (en) 2013-04-24
EP2105068A1 (en) 2009-09-30

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