EP0397978A1 - Slat for a slat support - Google Patents

Slat for a slat support Download PDF

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Publication number
EP0397978A1
EP0397978A1 EP19900104572 EP90104572A EP0397978A1 EP 0397978 A1 EP0397978 A1 EP 0397978A1 EP 19900104572 EP19900104572 EP 19900104572 EP 90104572 A EP90104572 A EP 90104572A EP 0397978 A1 EP0397978 A1 EP 0397978A1
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EP
European Patent Office
Prior art keywords
female connector
elastic layer
glued
elastic
slat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19900104572
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German (de)
French (fr)
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EP0397978B1 (en
Inventor
Günter c/o Teutoburger Sperrholzwerk Don
Ulrich Zobel
Karl Becker
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Huelsta Werke Huels GmbH and Co KG
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Huelsta Werke Huels GmbH and Co KG
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Priority to AT90104572T priority Critical patent/ATE84950T1/en
Publication of EP0397978A1 publication Critical patent/EP0397978A1/en
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Publication of EP0397978B1 publication Critical patent/EP0397978B1/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

Definitions

  • the invention relates to a female connector according to the preamble of the main claim.
  • a "Lötli” is described, in particular for seating and reclining furniture, in which a solid plastic layer is introduced between the upper and lower layers of veneer wood, which preferably consists of a thermosetting plastic.
  • This thick intermediate layer made of plastic is intended to avoid the disadvantage of pre-stressed "Luschtli", which is seen in the fact that, after use, they weaken after relatively few load changes and thus lose their suspension properties.
  • the solid plastic layer introduced is said to have better fatigue strength than European hardwood.
  • a plastic female connector for pads of upholstery, in particular mattresses which has a flat underside and a height decreasing from its transverse median plane to its two ends.
  • This female connector is made entirely of plastic and also with this female connector, the top flange and bottom flange are connected to each other in a shear-proof manner so that the desired homogeneity is not achieved.
  • DE-GM-76 21 595 describes a female connector made of plywood layers, with additional wooden lamellae firmly inserted in the central area, which the undesired, downward-facing, often permanent deformation occurring with prolonged use should avoid avoidance.
  • all layers of veneer wood are firmly glued to one another and thus connected in a shear-resistant manner, and the strip always maintains its dimension in terms of material thickness.
  • a female connector for a bed or slatted frame which consists of an upper and a lower reinforcing layer extending in the longitudinal direction of the skirting board made of plastic-bonded glass fibers, carbon fibers or the like. These two reinforcement layers are connected to each other via a foam layer.
  • the known female connector is designed to be constant over its entire length and thus has no homogeneity when viewed over the longitudinal axis of the connector, i.e. the layers can shift against each other under load and thus with deflection.
  • the upper and lower reinforcement layers are not connected to each other in a shear-resistant manner.
  • the invention has for its object to provide a female connector which has a suspension behavior as homogeneous as possible seen over its length - at least in the central region.
  • the female connector according to the invention consists of an upper chord and a lower chord, the two belts each consisting of veneer wood layers that are firmly glued together.
  • the thrust bond between the upper chord and lower chord is removed in the central area - apart from the end areas of the female connector - so that the upper chord and lower chord can move separately from one another in the central area.
  • a volume-elastic mass is filled in as an elastic layer in this area between the upper chord and lower chord, which keeps the upper chord and lower chord at a certain defined distance from one another when there is no load.
  • this elastic layer advantageously has the additional feature that its thickness increases continuously or in steps towards the middle of the bar and decreases towards the ends of the bar.
  • the elastic layer is firmly glued to the underside of the top chord and to the top of the bottom chord.
  • a foam made of natural or synthetic material is used as the elastic layer and it is preferably proposed according to the invention that the volume-elastic material, which of course also has to be form-elastic, is a polyurethane.
  • Polyurethane elastomers are high-molecular organic materials that have the characteristic elastic properties of natural or synthetic rubber. Polyurethane foam is widely known in the art as a cushioning material, insulating material and also in medicine as a cotton substitute.
  • This polyurethane foam used according to the invention has low rigidity, is volume-elastic and its rebound resilience is damped. When the tension subsides, the original dimension is fully restored, but this takes a longer time, i.e. the desired vibration damping is achieved.
  • the new female connector has the main advantage that its suspension behavior over the load path can be designed.
  • a female connector 1 is shown, which can be fixed by means of bearing blocks 2 and 3 on grate frame parts 4, wherein the bearing blocks 2 and 3 are only shown as exemplary embodiments.
  • bearing blocks 2 and 3 are only shown as exemplary embodiments.
  • specially designed bearing blocks are preferably used.
  • the female connector 1 has end regions 5 and 6.
  • the female connector 1 is constructed from an upper chord 12 and a lower chord 14, between which there is an elastic layer 11.
  • Upper flange 12 and lower flange 14 each consist of a layer of veneer wood ten 8, which can be surface-coated up or down by a synthetic resin film 9.
  • a moisture-impermeable thermosetting layer 10 is used in the upper chord 12 immediately before its lowermost plywood layer 1, which is designed to be shear and tensile resistant at least in the transverse direction of the veneer wood layers 8 and is arranged as close as possible to the neutral fiber of the upper chord 12.
  • the top flange 12 and bottom flange 14 are firmly glued to one another in the same way as the individual veneer wood layers 8 are glued and pressed together.
  • the elastic layer 11 is used, which preferably consists of a polyurethane foam and is volume-elastic, ie can be compressed elastically.
  • the transition from the center 7 to the end regions 5 and 6 is stepless.
  • This volume-elastic foam layer keeps the upper chord 12 and lower chord 14 at a defined distance from one another when there is no load and the thrust bond between the upper chord 12 and lower chord 14 is released, so that the upper chord 12 and lower chord 14 can move separately from one another in the central region.
  • Fig. 4 shows the spring behavior of a pure plywood strip and it can be seen that this spring behavior is linear.
  • Fig. 5 shows the spring behavior of a top flange 12 and bottom flange 14 and elastic layer 11 spring bar and it can be seen that the spring bar designed in this way yields relatively little at the beginning of the load, but then when the elastic layer 11 is compressed, becomes more flexible .
  • This configuration creates a female connector 1 which behaves more homogeneously than the previous female connectors and which, regardless of the area in which a load is exerted on the female connector, leads to the same amount of deflection over the entire length of the female connector. In addition, the swinging of the female connector is significantly reduced.

Landscapes

  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Laminated Bodies (AREA)

Abstract

In order to achieve a homogeneous spring characteristic of the slat with simultaneous elimination of subsequent vibrations, a slat (1) is proposed which consists of an upper beam (12) and a lower beam (14), a volumetrically elastic layer (11) being inserted between the upper beam (12) and the lower beam (14), which layer is glued securely to the upper beam (12) and lower beam (14), but, on the other hand, the upper beam and lower beam are securely joined to one another in the end region (5, 6) of the slats (1) without interposition of the elastic layer (11) and the elastic layer (11) consists of a volumetrically elastic foam material. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Federleiste ge­mäß dem Oberbegriff des Hauptanspruches.The invention relates to a female connector according to the preamble of the main claim.

In der CH-PS 504 860 wird ein "Lättli", insbesondere für Sitz- und Liegemöbel beschrieben, bei welchem zwischen oberen und unteren Furnierholzlagen eine massive Kunststoffschicht eingebracht ist, die vor­zugsweise aus einem hitzehärtbaren Kunststoff be­steht. Diese dicke Zwischenschicht aus Kunststoff soll den Nachteil vorgespannter "Lättli" vermeiden, der darin gesehen wird, daß sie im Gebrauch bereits nach relativ wenigen Belastungswechseln erlahmen und somit ihre Federungseigenschaft verlieren. Die ein­gebrachte massive Kunststoffschicht soll eine bes­sere Dauerstandsbiegefestigkeit als europäisches Hartholz aufweisen.In CH-PS 504 860 a "Lättli" is described, in particular for seating and reclining furniture, in which a solid plastic layer is introduced between the upper and lower layers of veneer wood, which preferably consists of a thermosetting plastic. This thick intermediate layer made of plastic is intended to avoid the disadvantage of pre-stressed "Lättli", which is seen in the fact that, after use, they weaken after relatively few load changes and thus lose their suspension properties. The solid plastic layer introduced is said to have better fatigue strength than European hardwood.

Dieses bekannte "Lättli" weist ebenso wie die be­kannten, ganz aus Furnierholzlagen bestehenden Fe­derleisten den Nachteil auf, daß über die Länge der Federleiste gesehen keine homogene Abstützung bei aufwirkender Last, d.h. gleiche Federkonstante unter gleicher Last erreicht wird. Die Federcharakteristik der Federleiste ist in ihrem Endbereich, in welchem sie sich auf den Rostrahmen abstützt, anders als im mittleren Bereich. Bei diesen bekannten Ausführungen sind alle die die Fedreleiste bildenden Lagen mit­einander schubfest verbunden, d.h. verleimt, so daß im Sinne der Biegebeanspruchung homogene Körper ent­stehen, die ihre Dimension hinsichtlich der Mate­rialstärke bei der Biegebeanspruchung beibehalten.This well-known "Lättli" as well as the well-known, completely made of plywood slats has the disadvantage that over the length of the Female connector seen no homogeneous support with acting load, ie the same spring constant is achieved under the same load. The spring characteristic of the female connector is different in its end area, in which it rests on the grate frame, than in the central area. In these known designs, all the layers forming the spring strip are connected to one another in a shear-resistant manner, that is to say glued, so that homogeneous bodies are created in the sense of the bending stress, which retain their dimension with regard to the material thickness in the bending stress.

Bei einem beliebigen Lasteingriff biegt sich bei diesen konventionellen und bekannten Federleisten auch dann die Leistenmitte mehr durch als die Stelle der Lastberührung und führt zur Kuhlenbil­dung neben dem Ruhenden, wenn die Kraft außerhalb der Leistenmitte angreift. Durch aufwendige Matrat­zen hat man versucht, diesen Nachteil zu vermeiden.With any conventional load intervention in these conventional and known female connectors, the middle of the ledge bends more than the point of contact with the load and leads to the formation of cavities next to the resting one when the force acts outside the middle of the ledge. With complex mattresses, attempts have been made to avoid this disadvantage.

Aus dem DE-GM 85 02 892 ist eine Kunststoff-Feder­leiste für Auflagen von Polstern, insbesondere Matratzen bekannt, die eine ebene Unterseite und eine von ihrer Quermittelebene zu ihren beiden Enden hin abnehmende Höhe aufweist. Diese Federleiste be­steht vollständig aus Kunststoff und auch bei die­ser Federleiste sind Obergurt und Untergurt über Zwischenstege schubfest miteinander verbunden, so daß die angestrebte Homogenität nicht erreicht wird.From DE-GM 85 02 892 a plastic female connector for pads of upholstery, in particular mattresses is known, which has a flat underside and a height decreasing from its transverse median plane to its two ends. This female connector is made entirely of plastic and also with this female connector, the top flange and bottom flange are connected to each other in a shear-proof manner so that the desired homogeneity is not achieved.

Das DE-GM- 76 21 595 beschreibt eine Federleiste aus Furnierholzlagen, wobei im mittleren Bereich zu­sätzliche Holzlamellen fest eingesetzt sind, die die bei längerem Gebrauch auftretenden unerwünschten, nach unten gerichteten, häufig bleibenden Verfor­ mungen vermeiden sollen. Auch hier sind alle Fur­nierholzlagen fest miteinander verleimt und damit schubfest miteinander verbunden und die Leiste hält stets ihre Dimension hinsichtlich der Materialstärke bei.DE-GM-76 21 595 describes a female connector made of plywood layers, with additional wooden lamellae firmly inserted in the central area, which the undesired, downward-facing, often permanent deformation occurring with prolonged use should avoid avoidance. Here too, all layers of veneer wood are firmly glued to one another and thus connected in a shear-resistant manner, and the strip always maintains its dimension in terms of material thickness.

Aus dem DE-GM 79 30 103 ist eine Federleiste für einen Bett- oder Lattenrost bekannt, die aus einer oberen und einer unteren in Leistenlängsrichtung verlaufenden Armierungsschicht aus in Kunststoff ge­bundenen Glasfasern, Karbonfasern od. dgl. besteht. Diese beiden Armierungsschichten sind über eine Schaumstoffschicht miteinander verbunden. Die be­kannte Federleiste ist über ihre ganze Länge gleich­bleibend ausgebildet und weist damit über die Lei­stenlängsachse gesehen bei Belastung keine Homogeni­tät auf, d.h. die Schichten können sich bei Bela­stung und damit bei Durchbiegung gegeneinander ver­schieben. Die obere und untere Armierungsschicht sind nicht schubfest miteinander verbunden.From DE-GM 79 30 103 a female connector for a bed or slatted frame is known, which consists of an upper and a lower reinforcing layer extending in the longitudinal direction of the skirting board made of plastic-bonded glass fibers, carbon fibers or the like. These two reinforcement layers are connected to each other via a foam layer. The known female connector is designed to be constant over its entire length and thus has no homogeneity when viewed over the longitudinal axis of the connector, i.e. the layers can shift against each other under load and thus with deflection. The upper and lower reinforcement layers are not connected to each other in a shear-resistant manner.

In der gattungsbildenden CH-PS 650 911 wird ein "Lättli" aus durch Leimung miteinander verbundenen Holzschichten vorgeschlagen, bei welchem in der unten liegende Zugzone mindestens eine zwischen 0,15 mm - 0,5 mm starke Gummieinlage mit den anlie­genden Holzschichten verleimt ist. Hierdurch soll das "Lättli" sowohl dauerfest werden, d.h. eine große Wechselfestigkeit aufweisen und gleichzeitig im Verhalten weicher, d.h. in der Auflage angenehmer werden. Erreicht wird dies dadurch, daß sich der obere, aus Holz bestehende Trägerteil gegen den un­teren aus Holz bestehenden Trägerteil bei aufwirken­der Last im Bereich der Gummieinlage elastisch ver­schieben kann. Obgleich die beiden Holzträgerteile über die Gummieinlage miteinander verleimt sind, können sie sich gegeneinander verschieben. Sie sind also nicht schubfest miteinander verbunden.In the generic CH-PS 650 911, a "Lättli" made of layers of wood joined together by gluing is proposed, in which at least one rubber insert between 0.15 mm and 0.5 mm thick is glued to the adjacent layers of wood in the tension zone below. This is intended to make the "Lättli" both durable, that is to say it has a high level of fatigue strength, and at the same time it is softer in its behavior, that is to say it is more pleasant in its edition. This is achieved in that the upper support part made of wood can move elastically against the lower support part made of wood when the load acts in the area of the rubber insert. Although the two wooden beam parts are glued together via the rubber insert, they can move against each other. So they are not shear-proof.

Der Erfindung liegt die Aufgabe zugrunde, eine Fe­derleiste zu schaffen, die ein möglichst homogenes Federungsverhalten über ihre Länge gesehen - wenig­stens im mittleren Bereich - aufweist.The invention has for its object to provide a female connector which has a suspension behavior as homogeneous as possible seen over its length - at least in the central region.

Diese der Erfindung zugrundeliegende Aufgabe wird durch die Lehre des Hauptanspruches gelöst.This object on which the invention is based is achieved by the teaching of the main claim.

Vorteilhafte Ausgestaltungen sind in den Unteran­sprüchen erläutert.Advantageous configurations are explained in the subclaims.

Mit anderen Worten ausgedrückt, besteht die erfin­dungsgemäße Federleiste aus einem Obergurt und einem Untergurt, wobei die beiden Gurte jeweils für sich aus miteinander fest verleimten Furnierholzschichten bestehen. Der Schubverbund zwischen Obergurt und Untergurt ist im mittleren Bereich - von den Endbe­reichen der Federleiste abgesehen - aufgehoben, so daß sich Obergurt und Untergurt im Mittelbereich ge­trennt voneinander bewegen können. Außerdem ist in diesem Bereich zwischen Obergurt und Untergurt eine volumenelastische Masse als elastische Schicht ein­gefüllt, die Obergurt und Untergurt dann, wenn keine Belastung erfolgt, in einen bestimmten definierten Abstand voneinander hält. Darüber hinaus weist diese elastische Schicht vorteilhafterweise zusätzlich das Merkmal auf, daß ihre Dicke zur Leistenmitte hin stufenlos oder in Stufen zunimmt und zu den En­den der Leiste hin abnimmt. Die elastische Schicht ist mit der Unterseite des Obergurtes und mit der Oberseite des Untergurtes fest verleimt.In other words, the female connector according to the invention consists of an upper chord and a lower chord, the two belts each consisting of veneer wood layers that are firmly glued together. The thrust bond between the upper chord and lower chord is removed in the central area - apart from the end areas of the female connector - so that the upper chord and lower chord can move separately from one another in the central area. In addition, a volume-elastic mass is filled in as an elastic layer in this area between the upper chord and lower chord, which keeps the upper chord and lower chord at a certain defined distance from one another when there is no load. In addition, this elastic layer advantageously has the additional feature that its thickness increases continuously or in steps towards the middle of the bar and decreases towards the ends of the bar. The elastic layer is firmly glued to the underside of the top chord and to the top of the bottom chord.

Bei örtlichem Lastangriff wird der Raum zwischen Obergurt und Untergurt infolge der Volumenelastizi­tät der elastischen Schicht zusammengedrückt, so daß sich die statische Höhe verändert und der Träger an dieser Stelle nachgiebiger wird und die Belastung durch örtliche Verformung erfolgen kann, ohne daß der Träger, d.h. die Federleiste, sich in ihrer ganzen Länge durchbiegt. Bei der neuen Leiste gibt im wesentlichen nur der belastete Teil nach. Dies hat den großen Vorteil, daß nur relativ dünne Ma­tratzen eingesetzt zu werden brauchen.In the event of a local load attack, the space between the upper chord and lower chord is compressed as a result of the volume elasticity of the elastic layer, so that the static height changes and the support at this point becomes more flexible and the load can be exerted by local deformation without the support, i.e. the female connector bends in its entire length. Essentially, only the loaded part of the new bar gives way. This has the great advantage that only relatively thin mattresses need to be used.

Als elastische Schicht wird ein Schaumstoff aus na­türlichem oder synthetischem Werkstoff eingesetzt und vorzugsweise wird gemäß der Erfindung vorge­schlagen, daß der volumenelastische Werkstoff, der natürlich auch formelastisch sein muß, ein Polyur­ethan ist. Polyurethanelastomere sind hochmoleku­lare organische Werkstoffe, die die charakteristi­schen elastischen Eigenschaften des natürlichen oder synthetischen Kautschuks besitzen. Polyurethan­schaum ist im weiten Bereich in der Technik bekannt als Polstermaterial, Isoliermaterial und auch in der Medizin als Watteersatz.A foam made of natural or synthetic material is used as the elastic layer and it is preferably proposed according to the invention that the volume-elastic material, which of course also has to be form-elastic, is a polyurethane. Polyurethane elastomers are high-molecular organic materials that have the characteristic elastic properties of natural or synthetic rubber. Polyurethane foam is widely known in the art as a cushioning material, insulating material and also in medicine as a cotton substitute.

Dieser erfindungsgemäß eingesetzte Polyurethanschaum hat eine geringe Steifigkeit, ist volumenelastisch und seine Rückprallelastizität ist gedämpft. Bei Nachlassen der Spannung stellt sich die ursprüng­liche Dimension voll wieder ein, wobei aber hierzu längere Zeit benötigt wird, d.h. es wird die ange­strebte Schwingungsdämpfung bewirkt.This polyurethane foam used according to the invention has low rigidity, is volume-elastic and its rebound resilience is damped. When the tension subsides, the original dimension is fully restored, but this takes a longer time, i.e. the desired vibration damping is achieved.

Die neue Federleiste hat den wesentlichen Vorteil, daß sie in ihrem Federungsverhalten über den Lastweg gestaltbar ist.The new female connector has the main advantage that its suspension behavior over the load path can be designed.

Ein Ausführungsbeispiel der Erfindung wird nachfol­gend anhand der Zeichnung erläutert. Die Zeichnung zeigt in

  • Fig. 1 schaubildlich eine Federleiste mit Lagerböckchen und Rostrahmenteilen, in
  • Fig. 2 in größerem Maßstab einen Ausschnitt aus dem mittleren Bereich der Feder­leiste, in
  • Fig. 3 ebenfalls in größerem Maßstab einen Ausschnitt aus dem Übergangsbereich vom mittleren Bereich zum Endbereich der Federleiste, in
  • Fig. 4 ein Last-Wegdiagramm für eine nur aus miteinander verleimten Holzfurnieren bestehende Federleiste und in
  • Fig. 5 ein Last-Wegdiagramm für die erfin­dungsgemäße Federleiste.
An embodiment of the invention is explained below with reference to the drawing. The drawing shows in
  • Fig. 1 shows a female connector with bearing blocks and rust frame parts, in
  • Fig. 2 on a larger scale a section of the central area of the female connector, in
  • Fig. 3 also on a larger scale a section of the transition area from the central area to the end region of the female connector, in
  • Fig. 4 is a load-path diagram for a spring bar consisting only of glued wood veneers and in
  • Fig. 5 is a load path diagram for the female connector according to the invention.

In Fig. 1 ist eine Federleiste 1 dargestellt, die mittels Lagerböckchen 2 und 3 auf Rostrahmenteilen 4 festgelegt werden kann, wobei die Lagerböckchen 2 und 3 nur als Ausführungsbeispiele dargestellt sind. Im Einsatzfall der neuen Federleiste werden vorzugs­weise in besonderer Weise gestaltete Lagerböckchen Anwendung finden.In Fig. 1 a female connector 1 is shown, which can be fixed by means of bearing blocks 2 and 3 on grate frame parts 4, wherein the bearing blocks 2 and 3 are only shown as exemplary embodiments. When the new female connector is used, specially designed bearing blocks are preferably used.

Die Federleiste 1 weist Endbereiche 5 und 6 auf. Die Federleiste 1 ist aus einem Obergurt 12 und einem Untergurt 14 aufgebaut, zwischen welchen sich eine elastische Schicht 11 befindet. Obergurt 12 und Untergurt 14 bestehen jeweils aus Furnierholzschich­ ten 8, die nach oben bzw. nach unten hin durch einen Kunstharzfilm 9 oberflächenvergütet sein können. Im dargestellten Ausführungsbeispiel ist im Obergurt 12 unmittelbar vor seiner untersten Fur­nierholzschicht 1 eine feuchtigkeitsundurchlässige Duroplastschicht 10 eingesetzt, die mindestens in Querrichtung der Furnierholzschichten 8 schub- und zugfest ausgebildet ist und dabei möglichst nahe der neutralen Faser des Obergurtes 12 angeordnet ist.The female connector 1 has end regions 5 and 6. The female connector 1 is constructed from an upper chord 12 and a lower chord 14, between which there is an elastic layer 11. Upper flange 12 and lower flange 14 each consist of a layer of veneer wood ten 8, which can be surface-coated up or down by a synthetic resin film 9. In the exemplary embodiment shown, a moisture-impermeable thermosetting layer 10 is used in the upper chord 12 immediately before its lowermost plywood layer 1, which is designed to be shear and tensile resistant at least in the transverse direction of the veneer wood layers 8 and is arranged as close as possible to the neutral fiber of the upper chord 12.

Im Endbereich 5 und 6 sind Obergurt 12 und Untergurt 14 fest miteinander verleimt in gleicher Weise wie die einzelnen Furnierholzschichten 8 miteinander verleimt und verpreßt sind. In dem nicht verleimten Bereich zwischen Obergurt 12 und Untergurt 14 ist die elastische Schicht 11 eingesetzt, die vorzugs­weise aus einem Polyurethanschaum besteht und volu­menelastisch ist, d.h. sich elastich zusammenpressen läßt. Die Dicke dieser elastischen Schicht 11 ist so gestaltet, daß die Dicke d in der Leistenmitte 7 größer ist als in den Endbereichen 5, 6, d.h. die elastische Schicht 11 läuft in ihren Endbereichen zu einer Dicke d = 0 aus, während im mittleren Be­reich die Dicke d relativ erheblich ist. Bei dem dargestellten Ausführungsbeispiel ist der Übergang von der Mitte 7 zu den Endbereichen 5 und 6 stufen­los. Durch diese volumenelastische Schaumstoff­schicht wird Obergurt 12 und Untergurt 14 dann, wenn keine Belastung erfolgt, in definiertem Ab­stand voneinander gehalten und der Schubverbund zwischen Obergurt 12 und Untergurt 14 ist aufgeho­ben, so daß sich Obergurt 12 und Untergurt 14 im mittleren Bereich getrennt voneinander bewegen können.In the end region 5 and 6, the top flange 12 and bottom flange 14 are firmly glued to one another in the same way as the individual veneer wood layers 8 are glued and pressed together. In the non-glued area between the upper chord 12 and lower chord 14, the elastic layer 11 is used, which preferably consists of a polyurethane foam and is volume-elastic, ie can be compressed elastically. The thickness of this elastic layer 11 is designed such that the thickness d in the middle 7 of the last is greater than in the end regions 5, 6, ie the elastic layer 11 tapers to a thickness d = 0 in its end regions, while in the central region the Thickness d is relatively considerable. In the exemplary embodiment shown, the transition from the center 7 to the end regions 5 and 6 is stepless. This volume-elastic foam layer keeps the upper chord 12 and lower chord 14 at a defined distance from one another when there is no load and the thrust bond between the upper chord 12 and lower chord 14 is released, so that the upper chord 12 and lower chord 14 can move separately from one another in the central region.

Fig. 4 zeigt das Federverhalten einer reinen Fur­nierholzleiste und es ist erkennbar, daß dieses Fe­derverhalten linear ist.Fig. 4 shows the spring behavior of a pure plywood strip and it can be seen that this spring behavior is linear.

Fig. 5 zeigt das Federverhalten einer aus Obergurt 12 und Untergurt 14 und elastischer Schicht 11 auf­gebauten Federleiste und es ist erkennbar, daß die so gestaltete Federleiste zu Beginn der Belastung relativ wenig nachgibt, dann aber, wenn die elasti­sche Schicht 11 zusammengepreßt ist, nachgiebiger wird.Fig. 5 shows the spring behavior of a top flange 12 and bottom flange 14 and elastic layer 11 spring bar and it can be seen that the spring bar designed in this way yields relatively little at the beginning of the load, but then when the elastic layer 11 is compressed, becomes more flexible .

Bei örtlichem Lastangriff wird Obergurt 12 und Un­tergurt 14 infolge der Elastizität der elastischen Schicht 11 zusammengedrückt, so daß sich die stati­sche Höhe verändert und die Federleiste an dieser Stelle nachgeben wird und die Belastung durch ört­liche Verformung erfolgen kann, ohne daß sich die Federleiste 1 in ihrer ganzen Länge durchbiegt.In the event of a local load attack, the upper chord 12 and lower chord 14 are compressed due to the elasticity of the elastic layer 11, so that the static height changes and the female connector will yield at this point and the load due to local deformation can occur without the female connector 1 being in it deflects along its entire length.

Durch diese Ausbildung wird eine Federleiste 1 ge­schaffen, die sich homogener als die bisherigen Federleisten verhält und die, unabhängig in welchem Bereich eine Belastung auf die Federleiste ausgeübt wird, zu einer gleichstarken Durchbiegung über die ganze Länge der Federleiste führt. Außerdem wird das Nachschwingen der Federleiste erheblich verringert.This configuration creates a female connector 1 which behaves more homogeneously than the previous female connectors and which, regardless of the area in which a load is exerted on the female connector, leads to the same amount of deflection over the entire length of the female connector. In addition, the swinging of the female connector is significantly reduced.

Claims (4)

1. Federleiste für einen Lattenrost für Sitz- und/oder Liegemöbel , die aus mehreren mitein­ander verleimten und verpreßten Furnierholz­schichten und einer zwischen den Furnierholz­schichten angeordneten und mit diesen ver­leimten elastischen Schicht besteht, dadurch gekennzeichnet, daß a) die elastische Schicht (11) aus einem volumenelastischen Werkstoff besteht, b) die Dicke (d) der elastischen Schicht (11) zur Leistenmitte (7) hin zunimmt, c) in Längsachse der Federleiste (1) gesehen in den beiden Endbereichen (5, 6) der Fe­derleiste (1) die Furnierholzschichten (8) ohne Zwischenschaltung der elasti­schen Schicht (11) miteinander verleimt sind. 1. female connector for a slatted frame for seating and / or reclining furniture, which consists of several glued and pressed together veneer wood layers and one arranged between the veneer wood layers and glued with this elastic layer, characterized in that a) the elastic layer (11) consists of a volume-elastic material, b) the thickness (d) of the elastic layer (11) increases towards the middle of the last (7), c) seen in the longitudinal axis of the female connector (1) in the two end regions (5, 6) of the female connector (1) the veneer wood layers (8) are glued together without interposing the elastic layer (11). 2. Federleiste nach Anspruch 1, dadurch gekenn­zeichnet, daß die ohne Zwischenschaltung der elastischen Schicht (11) miteinander verleim­ten Endbereiche (5, 6) der Federleiste (1) jeweils etwa 10 % der Gesamtlänge der Feder­leiste (1) betragen.2. Female connector according to claim 1, characterized in that the end regions (5, 6) of the female connector (1) which are glued to one another without interposition of the elastic layer (11) each amount to approximately 10% of the total length of the female connector (1). 3. Federleiste nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der volumenelastische Werkstoff der elastischen Schicht (11) durch einen Schaumstoff aus natürlichen oder syn­thetischen Werkstoffen geildet ist.3. Female connector according to claim 1 or 2, characterized in that the volume-elastic material of the elastic layer (11) is formed by a foam made of natural or synthetic materials. 4. Federleiste nach Anspruch 3, dadurch gekenn­ zeichnet, daß der volumenelastische Werkstoff aus einem Polyurethanschaum besteht.4. Female connector according to claim 3, characterized records that the volume-elastic material consists of a polyurethane foam.
EP90104572A 1989-05-17 1990-03-10 Slat for a slat support Expired - Lifetime EP0397978B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90104572T ATE84950T1 (en) 1989-05-17 1990-03-10 STAINLESS STEEL FOR A SLATTED FRAME OR DGL.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3916042 1989-05-17
DE3916042 1989-05-17
DE3939024A DE3939024A1 (en) 1989-05-17 1989-11-25 SPRING BAR FOR A LATTENED GRID OR THE LIKE
DE3939024 1989-11-25

Publications (2)

Publication Number Publication Date
EP0397978A1 true EP0397978A1 (en) 1990-11-22
EP0397978B1 EP0397978B1 (en) 1993-01-27

Family

ID=25880950

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90104572A Expired - Lifetime EP0397978B1 (en) 1989-05-17 1990-03-10 Slat for a slat support

Country Status (3)

Country Link
EP (1) EP0397978B1 (en)
DE (2) DE3939024A1 (en)
ES (1) ES2040522T3 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994014359A1 (en) * 1992-12-22 1994-07-07 Rudolf Wuggenig Element for placing on or in mattresses
EP0663168A1 (en) * 1994-01-12 1995-07-19 Werzalit Ag + Co. A slat of laminated wood for a slatted bed-base
DE19930215A1 (en) * 1999-06-30 2001-01-11 Rudolf Haddick Mattress or seat has spring components arranged so that when downward pressure is exerted on one of these, it is transmitted in an upward direction to a further, neighbouring spring
CN104862216A (en) * 2014-02-21 2015-08-26 宁波大学 High-throughput visual totally-enclosed split-type LAMP-LFD detection chip device
EP3167766A1 (en) * 2015-11-10 2017-05-17 Recticel Schlafkomfort GmbH Suspension spring for a seat or bed support and support having at least one such suspension spring

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4303640A1 (en) * 1993-02-09 1994-08-11 Werzalit Ag & Co Slat made of laminated wood
DE19632960A1 (en) * 1996-08-16 1998-02-19 Rummel Matratzen Gmbh & Co Elastic plastic strip, especially for slatted frames of reclining furniture
DE102011056024B4 (en) * 2011-12-05 2016-12-01 Lorenz Kunststofftechnik Gmbh Female connector

Citations (2)

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Publication number Priority date Publication date Assignee Title
FR889892A (en) * 1942-06-10 1944-01-21 Bed base with flexible wooden slats
DE2703199B1 (en) * 1977-01-27 1977-12-29 Haro Gmbh Spring strip for bed frame with transverse profiling

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Publication number Priority date Publication date Assignee Title
DE8502892U1 (en) * 1985-05-02 Texmato GmbH & Co, 4500 Osnabrück Plastic spring strip for pads on upholstery
CH504860A (en) * 1969-03-07 1971-03-31 Metzger Josef Lättli, in particular for seating and reclining furniture
DE7621595U1 (en) * 1976-07-08 1977-09-01 Teutoburger Sperrholzwerk Georg Nau Gmbh, 4930 Detmold SPRING STRIP AS BASE FOR SEAT AND / OR Lounger
DE7930103U1 (en) * 1979-10-24 1980-01-31 Sigmund Scherdel Sport- Und Freizeit Gmbh, 8590 Marktredwitz LATTE FOR BED OR LATTENING
CH650911A5 (en) * 1981-03-02 1985-08-30 Jos Metzger Liegemoebelfabrik Slat for slatted couch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR889892A (en) * 1942-06-10 1944-01-21 Bed base with flexible wooden slats
DE2703199B1 (en) * 1977-01-27 1977-12-29 Haro Gmbh Spring strip for bed frame with transverse profiling

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994014359A1 (en) * 1992-12-22 1994-07-07 Rudolf Wuggenig Element for placing on or in mattresses
EP0663168A1 (en) * 1994-01-12 1995-07-19 Werzalit Ag + Co. A slat of laminated wood for a slatted bed-base
DE19930215A1 (en) * 1999-06-30 2001-01-11 Rudolf Haddick Mattress or seat has spring components arranged so that when downward pressure is exerted on one of these, it is transmitted in an upward direction to a further, neighbouring spring
DE19930215C2 (en) * 1999-06-30 2002-06-27 Rudolf Haddick Lying and seating element
CN104862216A (en) * 2014-02-21 2015-08-26 宁波大学 High-throughput visual totally-enclosed split-type LAMP-LFD detection chip device
EP3167766A1 (en) * 2015-11-10 2017-05-17 Recticel Schlafkomfort GmbH Suspension spring for a seat or bed support and support having at least one such suspension spring

Also Published As

Publication number Publication date
DE3939024A1 (en) 1990-11-22
DE59000808D1 (en) 1993-03-11
DE3939024C2 (en) 1991-03-14
ES2040522T3 (en) 1993-10-16
EP0397978B1 (en) 1993-01-27

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