EP2789265A1 - Spring of a spring core consisting of a wire - Google Patents

Spring of a spring core consisting of a wire Download PDF

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Publication number
EP2789265A1
EP2789265A1 EP20140162760 EP14162760A EP2789265A1 EP 2789265 A1 EP2789265 A1 EP 2789265A1 EP 20140162760 EP20140162760 EP 20140162760 EP 14162760 A EP14162760 A EP 14162760A EP 2789265 A1 EP2789265 A1 EP 2789265A1
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EP
European Patent Office
Prior art keywords
spring
springs
wire
spring core
wound
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
EP20140162760
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German (de)
French (fr)
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EP2789265B1 (en
Inventor
Wolfgang Grothaus
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Agro Holding GmbH
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Agro Holding GmbH
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Publication of EP2789265A1 publication Critical patent/EP2789265A1/en
Application granted granted Critical
Publication of EP2789265B1 publication Critical patent/EP2789265B1/en
Priority to HRP20160541TT priority Critical patent/HRP20160541T1/en
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Classifications

    • 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
    • A47C23/04—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled
    • A47C23/043—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled using wound springs
    • A47C23/0436—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled using wound springs made from a single wire
    • 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
    • A47C23/04—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled
    • A47C23/043—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled using wound springs
    • A47C23/0438—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled using wound springs of special shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F3/00—Coiling wire into particular forms
    • B21F3/02—Coiling wire into particular forms helically
    • B21F3/04—Coiling wire into particular forms helically externally on a mandrel or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F3/00—Coiling wire into particular forms
    • B21F3/02—Coiling wire into particular forms helically
    • B21F3/06—Coiling wire into particular forms helically internally on a hollow form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F35/00—Making springs from wire
    • B21F35/006—Double twist coil springs

Definitions

  • the invention relates to a spring made of wire of a spring core according to the preamble of claim 1.
  • Springs cored with generic springs find use in different areas.
  • spring cores for upholstered furniture, but especially for mattresses, may be mentioned here.
  • the individual springs are designed as coil springs and usually consist of a metal wire, where they are available as Bonnell-, pocket or barrel springs or as waisted springs.
  • the invention has for its object to further develop a spring of the generic type so that their suspension behavior improves overall and their inherent rigidity is increased.
  • the spring in one piece, for which purpose a suitable tool is proposed, with which an inserted wire is wound in a double-threaded manner, as it were, in one operation.
  • the two end rings are shaped so that there is a supporting support for a cover, these end rings are formed by a partially meandering course.
  • the new spring may be formed as a waisted spring, as Bonnell-, pocket or barrel spring, ie, the waisted or barrel-shaped Springs, as well as cylindrical, are enclosed in textile casings and made into a pocket spring core.
  • a further concept of the invention provides that preferably in the middle region, transverse to the longitudinal axis of the springs, a hose is guided, which penetrates at least a part of the springs, which result in a spring row lying side by side.
  • a plurality of spring rows arranged parallel to one another form the spring core.
  • the mentioned hose which is closed at the end, serves to receive a medium with which the suspension behavior of the springs is influenced.
  • compressed air can be introduced into the hose with which the stiffness of the springs or the compression is limited or determined.
  • the hoses can also be filled with other media.
  • a spring core which is partially different in terms of its suspension behavior can be produced, and this suspension behavior can be changed at any time by appropriately discharging or feeding the medium into the hose, that is, by influencing the hardness of the hose.
  • another stiffening element may be provided, in particular one made of elastic solid material, such as a suitable foam or the like, wherein such a rod is to be adapted to the individual wishes and needs of the users of a spring core or a then completed mattress.
  • An apparatus for producing the springs according to the invention comprises a cylindrical mandrel, whose lateral surface is provided with two helically extending grooves, and a bush whose clear diameter corresponds approximately to the outer diameter of the mandrel, wherein the mandrel has a slot at one end, which at both Ends in the respective spiraling passes.
  • the wire to be formed into a spring initially lies in the slot as a rod before the mandrel is axially inserted into the bush and at the same time twisted relative thereto. During this movement, the wire is deformed in such a way that it comes into contact with the turns, resulting in the double-turn of the spring. To release the spring from the mandrel, this or the spring is rotated according to the turn, so that the mandrel practically unscrews out of the spring.
  • a spring 1 is shown, which is part of a in the FIG. 2 Partially shown spring core is.
  • the spring 1 at the opposite ends substantially parallel to each other aligned end rings 3, which limit the course of a helically coiled spring wire, which, according to the invention, two-wound wound.
  • an elastically deformable rod 4 is preferably arranged in the middle region of the springs 1 of a row of springs, for example in the form of a hose to be filled with a medium, via which, depending on the filling, for example with air, the spring characteristic of the springs 1 and thus the corresponding spring row is beintikbar.
  • FIG. 3 shows a tool for producing a spring 1, wherein as a starting material, ie as a blank, a cut wire 5 is used.
  • the tool consists of a mandrel 6 with two helically extending grooves 7 and a bushing 8, in which the mandrel 6 for forming the spring 1 both axially inserted as well as relative to the sleeve 8 is rotated such that the wire 5 in the grooves 7 for Plant comes.
  • the invention can be realized in all spring shapes with helically wound spring wire, including in particular Bonnell springs, barrel-shaped or waist-shaped springs count, the latter also Solutionstascht, so that from a pocket spring core can be produced.

Abstract

Eine Feder eines Federkerns, mit sich gegenüberliegenden, im Wesentlichen parallel zueinander ausgerichteten Endringen (3), die den Verlauf eines schraubenförmig gewundenen Federdrahts (2) begrenzen, ist so ausgebildet, dass der Federdraht (2) in zwei Wendeln gewunden ist.A spring of a spring core, with opposite, substantially parallel end rings (3), which limit the course of a helically wound spring wire (2) is formed so that the spring wire (2) is wound in two helices.

Description

Die Erfindung betrifft eine aus Draht bestehende Feder eines Federkerns nach dem Oberbegriff des Anspruchs 1.The invention relates to a spring made of wire of a spring core according to the preamble of claim 1.

Mit gattungsgemäßen Federn bestückte Federkerne finden in unterschiedlichen Bereichen Verwendung. Beispielhaft seien hier Federkerne für Polstermöbel, insbesondere aber für Matratzen genannt.Springs cored with generic springs find use in different areas. By way of example, spring cores for upholstered furniture, but especially for mattresses, may be mentioned here.

Die Einzelfedern sind als Schraubenfedern ausgebildet und bestehen üblicherweise aus einem Metalldraht, wobei sie als Bonnell-, Taschen- oder Tonnenfedern oder als taillierte Federn vorliegen.The individual springs are designed as coil springs and usually consist of a metal wire, where they are available as Bonnell-, pocket or barrel springs or as waisted springs.

Dabei werden bestimmte Anforderungen an die einzelnen Federn gestellt, denen zum Teil nur unter Inkaufnahme von Nachteilen entsprochen werden kann.There are certain requirements placed on the individual springs, which can be met in part only at the cost of disadvantages.

So sei auf die Eigensteifigkeit der einzelnen Federn verwiesen, die nur durch eine entsprechende Dickendimensionierung der aus Draht bestehenden Feder beeinflussbar ist. D.h., um die geforderte ausreichende Eigensteifigkeit zu erreichen, muss der eingesetzte Draht entsprechend dick ausgebildet sein.Thus, reference is made to the inherent stiffness of the individual springs, which can only be influenced by a corresponding thickness dimensioning of the spring made of wire. That is, in order to achieve the required sufficient inherent rigidity, the wire used must be made correspondingly thick.

Dies ist gleichermaßen erforderlich, um eine unerwünschte seitliche Auslenkung der Federn zu verhindern bzw. zu reduzieren, da diese selbst bei einer für das übrige Federungsverhalten akzeptablen Dimensionierung nicht ausreichend ist.This is equally necessary in order to prevent or reduce an undesirable lateral deflection of the springs, since these even at a for the remaining suspension behavior is acceptable.

In jedem Fall ergibt sich aus der insoweit notwendigen maßlichen Festlegung des Drahtes ein relativ hohes Eigengewicht des Federkerns, das hinsichtlich der Handhabung, insbesondere zur Weiterverarbeitung zu einer Matratze oder dergleichen, äußerst hinderlich ist. Dabei schließt diese Handhabung den Transport des quasi ein Halbzeug darstellenden Federkerns hin zur Stelle der Weiterverarbeitung ein. Die aufgrund des relativ hohen Eigengewichts des Federkerns beim Transport sich ergebenden Kosten stehen einer Kostenoptimierung entgegen, so dass die bekannten Federn den diesbezüglich gestellten Forderungen nicht entsprechen.In any case, results from the extent necessary dimensional fixing of the wire, a relatively high weight of the spring core, which is extremely hindering in terms of handling, in particular for further processing into a mattress or the like. In this case, this handling includes the transport of the quasi semi-finished spring core to the point of further processing. The resulting due to the relatively high weight of the innerspring during transport costs are a cost optimization, so that the known springs do not meet the demands placed in this regard.

Der Erfindung liegt die Aufgabe zugrunde, eine Feder der gattungsgemäßen Art so weiterzuentwickeln, dass ihr Federungsverhalten insgesamt verbessert und ihre Eigensteifigkeit erhöht wird.The invention has for its object to further develop a spring of the generic type so that their suspension behavior improves overall and their inherent rigidity is increased.

Diese Aufgabe wird durch eine Feder mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a spring having the features of claim 1.

Eine solche Feder bietet gegenüber einer nach dem Stand der Technik erhebliche Vorteile. So ist zunächst einmal zu nennen, dass die Eigensteifigkeit wesentlich erhöht und damit die seitliche Auslenkung verringert ist, wobei der Materialeinsatz trotz der zweigängigen Windungen geringer sein kann, höchstens jedoch gleich. Dabei bezieht sich der Materialeinsatz auf den Durchmesser des Drahtes, der entsprechend kleiner sein kann als bisher.Such a spring offers over the prior art considerable advantages. So it should first be mentioned that the inherent rigidity is substantially increased and thus the lateral deflection is reduced, wherein the use of material may be less, but at most equal to the two-turn turns. The material used refers to the diameter of the wire, which can be correspondingly smaller than before.

Nach einem weiteren Gedanken der Erfindung ist vorgesehen, die Feder einstückig herzustellen, wozu ein geeignetes Werkzeug vorgeschlagen ist, mit dem quasi in einem Arbeitsgang ein eingesetzter Draht zweigängig gewunden wird.According to a further aspect of the invention, it is provided to manufacture the spring in one piece, for which purpose a suitable tool is proposed, with which an inserted wire is wound in a double-threaded manner, as it were, in one operation.

Die beiden Endringe sind so geformt, dass sich eine für eine Abdeckung stützende Auflage ergibt, wobei diese Endringe durch einen teilweise mäandrierenden Verlauf gebildet sind.The two end rings are shaped so that there is a supporting support for a cover, these end rings are formed by a partially meandering course.

Im Übrigen kann auch die neue Feder als taillierte Feder, als Bonnell-, Taschen- oder Tonnenfeder ausgebildet sein, d.h., die taillierten oder tonnenförmigen Federn, ebenso wie zylindrische, sind in textile Hüllen eingeschlossen und zu einem Taschenfederkern verarbeitet.Incidentally, the new spring may be formed as a waisted spring, as Bonnell-, pocket or barrel spring, ie, the waisted or barrel-shaped Springs, as well as cylindrical, are enclosed in textile casings and made into a pocket spring core.

Die erwähnte Verbesserung der Eigensteifigkeit, mit der eine seitliche Auslenkung reduziert wird, führt bei einem Federkern zu einer höheren Stabilität und damit einem verbesserten Liegekomfort, da sich die Endringe nicht mehr in dem bisher möglichen Maß zueinander verschieben können.The mentioned improvement of the inherent rigidity, with which a lateral deflection is reduced, results in a spring core to a higher stability and thus improved comfort, since the end rings can no longer move to each other to the extent previously possible.

Ein weiterer Gedanke der Erfindung sieht vor, dass vorzugsweise im Mittenbereich, quer zur Längsachse der Federn ein Schlauch geführt ist, der zumindest einen Teil der Federn durchdringt, die nebeneinander liegend eine Federreihe ergeben. In an sich bekannter Weise bilden eine Mehrzahl parallel zueinander angeordneter Federreihen den Federkern.A further concept of the invention provides that preferably in the middle region, transverse to the longitudinal axis of the springs, a hose is guided, which penetrates at least a part of the springs, which result in a spring row lying side by side. In a manner known per se, a plurality of spring rows arranged parallel to one another form the spring core.

Der erwähnte Schlauch, der endseitig geschlossen ist, dient der Aufnahme eines Mediums, mit dem das Federungsverhalten der Federn beeinflusst wird.The mentioned hose, which is closed at the end, serves to receive a medium with which the suspension behavior of the springs is influenced.

Beispielsweise kann in den Schlauch Druckluft eingebracht werden, mit der die Steifigkeit der Federn bzw. das Einfedern begrenzt bzw. bestimmt wird. Selbstverständlich sind die Schläuche auch mit anderen Medien befüllbar.For example, compressed air can be introduced into the hose with which the stiffness of the springs or the compression is limited or determined. Of course, the hoses can also be filled with other media.

Mit dieser Ausgestaltung ist ein in seinem Federungsverhalten partiell unterschiedlicher Federkern herstellbar, wobei dieses Federungsverhalten bei entsprechender Konfiguration des Federkerns jederzeit veränderbar ist durch Ablassen oder Zuführen des Mediums in den Schlauch, d.h., durch Beeinflussung der Härte des Schlauches.With this embodiment, a spring core which is partially different in terms of its suspension behavior can be produced, and this suspension behavior can be changed at any time by appropriately discharging or feeding the medium into the hose, that is, by influencing the hardness of the hose.

Anstelle eines Schlauches kann auch ein anderes Versteifungselement vorgesehen sein, insbesondere ein solches aus elastischem Vollmaterial, wie einem geeigneten Schaumstoff oder dergleichen, wobei ein solcher Stab den individuellen Wünschen und Bedürfnissen der Nutzer eines Federkerns bzw. einer dann fertiggestellten Matratze anzupassen ist.Instead of a hose, another stiffening element may be provided, in particular one made of elastic solid material, such as a suitable foam or the like, wherein such a rod is to be adapted to the individual wishes and needs of the users of a spring core or a then completed mattress.

Eine Vorrichtung zur Herstellung der erfindungsgemäßen Federn weist einen zylindrischen Dorn auf, dessen Mantelfläche mit zwei wendelförmig verlaufenden Furchen versehen ist, sowie eine Buchse, deren lichter Durchmesser etwa dem Außendurchmesser des Dorns entspricht, wobei der Dorn an einer Stirnseite einen Schlitz aufweist, der an beiden Enden in die jeweilige Wendelung übergeht.An apparatus for producing the springs according to the invention comprises a cylindrical mandrel, whose lateral surface is provided with two helically extending grooves, and a bush whose clear diameter corresponds approximately to the outer diameter of the mandrel, wherein the mandrel has a slot at one end, which at both Ends in the respective spiraling passes.

Der zu einer Feder zu formende Draht liegt zunächst als Stange im Schlitz, bevor der Dorn in die Buchse axial eingeführt und gleichzeitig relativ dazu verdreht wird. Bei dieser Bewegung wird der Draht derart verformt, dass er in den Wendelungen zur Anlage kommt, woraus sich die zweigängig Windung der Feder ergibt. Zum Lösen der Feder vom Dorn wird dieser oder die Feder entsprechend der Windung verdreht, so dass der Dorn sich praktisch aus der Feder herausschraubt.The wire to be formed into a spring initially lies in the slot as a rod before the mandrel is axially inserted into the bush and at the same time twisted relative thereto. During this movement, the wire is deformed in such a way that it comes into contact with the turns, resulting in the double-turn of the spring. To release the spring from the mandrel, this or the spring is rotated according to the turn, so that the mandrel practically unscrews out of the spring.

Weitere vorteilhafte Ausbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Further advantageous embodiments of the invention are characterized in the subclaims.

Ein Ausführungsbeispiel der Erfindung sowie eine Vorrichtung zur Herstellung der neuen Feder werden nachfolgend anhand der beigefügten Zeichnungen beschrieben.An embodiment of the invention and an apparatus for producing the novel spring will be described below with reference to the accompanying drawings.

Es zeigen:

Figur 1
eine erfindungsgemäße Feder in Alleinstellung in einer Seitenansicht
Figur 2
einen Teilausschnitt eines aus einer Vielzahl von Federn bestehenden Federkerns
Figur 3
ein Werkzeug zur Herstellung der Feder in einer schematischen Darstellung.
Show it:
FIG. 1
a spring according to the invention in isolation in a side view
FIG. 2
a partial section of a spring consisting of a plurality of springs
FIG. 3
a tool for producing the spring in a schematic representation.

In der Figur 1 ist eine Feder 1 dargestellt, die Bestandteil eines in der Figur 2 ausschnittweise gezeigten Federkerns ist. Dabei weist die Feder 1 an den sich gegenüberliegenden Enden im Wesentlichen parallel zueinander ausgerichtete Endringe 3 auf, die den Verlauf eines schraubenförmig gewundenen Federdrahts begrenzen, der, gemäß der Erfindung, zweigängig gewunden ist.In the FIG. 1 a spring 1 is shown, which is part of a in the FIG. 2 Partially shown spring core is. In this case, the spring 1 at the opposite ends substantially parallel to each other aligned end rings 3, which limit the course of a helically coiled spring wire, which, according to the invention, two-wound wound.

In an sich bekannter Weise sind mehrere hintereinander angeordnete Federn 1 miteinander verbunden und ergeben eine Federreihe, von denen eine Vielzahl parallel zueinander angeordnet sind und so einen Federkern bilden, wie er ausschnittsweise in der Figur 2 dargestellt ist.In a conventional manner a plurality of successively arranged springs 1 are connected to each other and produce a series of springs, of which a plurality are arranged parallel to each other and thus form a spring core, as it partially in the FIG. 2 is shown.

Darin ist auch zu erkennen, dass vorzugsweise im Mittenbereich der Federn 1 einer Federreihe eine elastisch verformbare Stange 4 angeordnet ist, beispielsweise in Form eines mit einem Medium zu befüllenden Schlauches, über den, je nach Befüllung, beispielsweise mit Luft, die Federcharakteristik der Federn 1 und damit der entsprechenden Federreihe beinflussbar ist.It can also be seen that an elastically deformable rod 4 is preferably arranged in the middle region of the springs 1 of a row of springs, for example in the form of a hose to be filled with a medium, via which, depending on the filling, for example with air, the spring characteristic of the springs 1 and thus the corresponding spring row is beinflussbar.

Die Figur 3 zeigt ein Werkzeug zur Herstellung einer Feder 1, wobei als Ausgangsmaterial, also als Rohling, ein abgelängter Draht 5 zum Einsatz kommt.The FIG. 3 shows a tool for producing a spring 1, wherein as a starting material, ie as a blank, a cut wire 5 is used.

Das Werkzeug besteht aus einem Dorn 6 mit zwei wendelförmig verlaufenden Nuten 7 und einer Buchse 8, in die der Dorn 6 zur Formgebung der Feder 1 sowohl axial eingeschoben wie auch relativ zur Buchse 8 derart verdreht wird, dass der Draht 5 in den Nuten 7 zur Anlage kommt.The tool consists of a mandrel 6 with two helically extending grooves 7 and a bushing 8, in which the mandrel 6 for forming the spring 1 both axially inserted as well as relative to the sleeve 8 is rotated such that the wire 5 in the grooves 7 for Plant comes.

Zum Lösen des Dorns 6 aus der dann geformten Feder 1 wird er gegensinnig herausgedreht.To release the mandrel 6 from the then formed spring 1, it is unscrewed in opposite directions.

Wie bereits erwähnt, ist die Erfindung bei allen Federformen mit schraubenförmig gewundenem Federdraht realisierbar, wozu insbesondere Bonnellfedern, tonnen- oder taillenförmig geformte Federn zählen, letztere auch eingetascht, so dass daraus ein Taschenfederkern herstellbar ist.As already mentioned, the invention can be realized in all spring shapes with helically wound spring wire, including in particular Bonnell springs, barrel-shaped or waist-shaped springs count, the latter also eingetascht, so that from a pocket spring core can be produced.

Claims (8)

Feder eines Federkerns, mit sich gegenüberliegenden, im Wesentlichen parallel zueinander ausgerichteten Endringen (3), die den Verlauf eines schraubenförmig gewundenen Federdrahts (2) begrenzen, dadurch gekennzeichnet, dass der Federdraht (2) in zwei Wendeln gewunden ist.Spring of a spring core, with opposite, substantially parallel end rings (3), which limit the course of a helically wound spring wire (2), characterized in that the spring wire (2) is wound in two helices. Feder nach Anspruch 1, gekennzeichnet durch die Ausbildung als Bonnellfeder, tonnen- oder taillenförmig sowie als TaschenfederSpring according to claim 1, characterized by the design as Bonnellfeder, barrel-shaped or waist-shaped and as a pocket spring Federkern mit einer Vielzahl von nebeneinander angeordneten, eine Federreihe bildenden Federn nach Anspruch 1, dadurch gekennzeichnet, dass durch den Windungsbereich der Federn (1) einer Federreihe eine elastische Stange (4) geführt ist.Spring core is arranged with a plurality of side by side, a row of springs forming springs according to claim 1, characterized in that by the winding portion of the springs (1) of a row of springs, an elastic rod (4) is guided. Federkern nach Anspruch 3, dadurch gekennzeichnet, dass die elastische Stange (4) aus einem mit einem Medium befüllten Schlauch besteht.Spring core according to claim 3, characterized in that the elastic rod (4) consists of a tube filled with a medium. Federkern nach Anspruch 3, dadurch gekennzeichnet, dass die Stange (4) aus einem elastisch verformbaren Vollmaterial besteht.Spring core according to claim 3, characterized in that the rod (4) consists of an elastically deformable solid material. Federkern nach Anspruch 3, dadurch gekennzeichnet, dass die Stange (4) etwa im Mittenbereich des Windungsbereichs durch die Federn (1) geführt ist.Spring core according to claim 3, characterized in that the rod (4) is guided approximately in the middle region of the winding region by the springs (1). Verfahren zur Herstellung einer Feder nach Anspruch 1, dadurch gekennzeichnet, dass ein Draht (5) mittels einer zwei wendelförmige Nuten aufweisenden Form gewunden wird.A method of producing a spring according to claim 1, characterized in that a wire (5) is wound by means of a two helical grooves having shape. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 7, dadurch gekennzeichnet, dass ein mit zwei in der Mantelfläche vorgesehenen wendelförmigen Nuten (7) versehener Dorn (6) vorgesehen ist, der axial und drehbar in eine Buchse (8) einführbar ist, wobei der Außendurchmesser des Dornes (6) etwa dem lichten Durchmesser der Buchse (8) entspricht.Apparatus for carrying out the method according to claim 7, characterized in that provided with two provided in the lateral surface helical grooves (7) versehener mandrel (6) is provided, which is axially and rotatably in a socket (8) insertable, wherein the outer diameter of Mandrel (6) corresponds approximately to the clear diameter of the bushing (8).
EP14162760.4A 2013-04-11 2014-03-31 Spring of a spring core consisting of a wire Not-in-force EP2789265B1 (en)

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HRP20160541TT HRP20160541T1 (en) 2013-04-11 2016-05-19 Spring of a spring core consisting of a wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201310103644 DE102013103644A1 (en) 2013-04-11 2013-04-11 Made of wire spring of a spring core

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EP2789265A1 true EP2789265A1 (en) 2014-10-15
EP2789265B1 EP2789265B1 (en) 2016-03-30

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EP (1) EP2789265B1 (en)
DE (1) DE102013103644A1 (en)
HR (1) HRP20160541T1 (en)
PL (1) PL2789265T3 (en)
PT (1) PT2789265T (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015102539A1 (en) 2015-02-23 2016-08-25 Agro Holding Gmbh Method for producing a cushion spring, cushion spring, mattress and upholstered furniture
DE102016107746A1 (en) 2016-04-26 2017-10-26 Agro Holding Gmbh Upholstery spring, method for producing a cushion spring, mattress and upholstered furniture

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB427118A (en) * 1933-10-19 1935-04-16 Douglas Rowland Drummond Improvements relating to coil springs, particularly for upholstery
US2014833A (en) * 1934-03-28 1935-09-17 Rca Corp Coil winding machine
US3406550A (en) * 1966-12-19 1968-10-22 Taylor George Wesley Apparatus for forming wire cable grips
US4682394A (en) * 1985-08-27 1987-07-28 Leggett & Platt, Incorporated Bedding and seating product having double twist coil spring and method and apparatus for manufacturing the same
US20050273939A1 (en) * 2004-06-10 2005-12-15 L&P Property Management Company Pocketed bedding or seating product having inflatable members

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB427118A (en) * 1933-10-19 1935-04-16 Douglas Rowland Drummond Improvements relating to coil springs, particularly for upholstery
US2014833A (en) * 1934-03-28 1935-09-17 Rca Corp Coil winding machine
US3406550A (en) * 1966-12-19 1968-10-22 Taylor George Wesley Apparatus for forming wire cable grips
US4682394A (en) * 1985-08-27 1987-07-28 Leggett & Platt, Incorporated Bedding and seating product having double twist coil spring and method and apparatus for manufacturing the same
US20050273939A1 (en) * 2004-06-10 2005-12-15 L&P Property Management Company Pocketed bedding or seating product having inflatable members

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PT2789265T (en) 2016-07-13
EP2789265B1 (en) 2016-03-30
HRP20160541T1 (en) 2016-06-17
DE102013103644A1 (en) 2014-10-16

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