EP2123197A1 - Spring core with reinforced edges - Google Patents

Spring core with reinforced edges Download PDF

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Publication number
EP2123197A1
EP2123197A1 EP09160595A EP09160595A EP2123197A1 EP 2123197 A1 EP2123197 A1 EP 2123197A1 EP 09160595 A EP09160595 A EP 09160595A EP 09160595 A EP09160595 A EP 09160595A EP 2123197 A1 EP2123197 A1 EP 2123197A1
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EP
European Patent Office
Prior art keywords
springs
spring
strand
spring core
core
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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
EP09160595A
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German (de)
French (fr)
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EP2123197B1 (en
Inventor
Wolfgang Grothaus
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Agro Holding GmbH
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Agro Holding GmbH
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Publication of EP2123197A1 publication Critical patent/EP2123197A1/en
Application granted granted Critical
Publication of EP2123197B1 publication Critical patent/EP2123197B1/en
Priority to HRP20161386TT priority Critical patent/HRP20161386T1/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
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/04—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with spring inlays
    • A47C27/06—Spring inlays
    • A47C27/066—Edge stiffeners
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/04—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with spring inlays
    • A47C27/06—Spring inlays
    • A47C27/063—Spring inlays wrapped or otherwise protected
    • A47C27/064—Pocketed springs

Definitions

  • the invention relates to a spring core with edge reinforcement according to the preamble of claim 1.
  • Such spring cores are used in many applications. Primarily they are used in the production of mattresses or furniture upholstery.
  • Such a spring core is for example from the DE 16 54 319 A1 known. However, this spring core is not up and unrolled, so that he does not meet the requirements.
  • the invention has for its object to further develop a spring core of the generic type so that it is easier and cheaper to produce, at the same time optimized transportability.
  • Such a spring core is simpler, i.e. less labor intensive, than previously produced, thereby significantly reducing the overall cost of manufacture.
  • edge enhancement includes above all a necessary hardness of the edge area as is desired in a seat cushion of a chair, in order to achieve a more comfortable getting up from the seating.
  • the edge reinforcement forms an abutment for supporting the resting thighs of the user, while the actual seat has the desired comfort.
  • the edge reinforcement is formed by the fact that the opposing and outer edges forming springs which are inventively connected to two springs of the adjacent spring strand are stored in a gap between the two associated springs of said spring strand, said gap is formed by a remote arrangement of the two springs of the spring strand.
  • the spring behavior of the edge reinforcement can be influenced by changing the wire size, the spring shape, the number of turns or a suitable choice of material.
  • the wire thickness of the edge springs is greater than that of the remaining springs of the spring core. This also applies to the other distinguishing features, which in any case lead to a greater hardness of the edge springs than the hardness of the other springs.
  • the invention finds use in a spring formed as a pocket spring core, in which the individual springs aretienttascht in a preferably textile casing.
  • the springs of a spring strand are connected to each other by the textile material.
  • the peripheral spring strands forming springs or the enveloping these pockets are preferably bonded to the adjacent, ie, associated spring strand, whereby a solid composite of the two spring strands is guaranteed.
  • a spring core is shown, with a plurality of axially parallel juxtaposed, helically wound springs 3, 4, of which a plurality of successively arranged in a row form a spring strand 1, 2.
  • springs 3 are arranged on at least two opposite edges of the spring core, each of which is connected to two springs 4 of the adjacent spring strand 1.
  • the spring core is formed as a pocket spring core, in which the springs 3, 4 each in a pocket of a preferably textile material einre, said pockets are connected by webs 6 together. By the webs 6, the pockets and thus the springs 3, 4 are spaced apart.
  • the arranged at the two edges of the spring core springs 3 also together form a spring strand, which is provided with the reference numeral 2 and also has webs 6, which correspond in length to the webs 6 of the remaining spring strands 1.
  • the outer spring strands 2 forming springs 3 of the spring core after FIG. 1 lie in the spaces formed by the webs 6 between two associated Springs 4 of the adjacent spring strand 1 and are connected there with an adhesive seam 5 in this example with the adjacent springs 4 and their enveloping pockets.
  • the spring strands 2 are arranged on the outside between two identical spring strands 1, one of which forms the outer spring strand, while the springs 3 of the interposed spring strand 2 both with two springs of the practically inner spring strand 1 as well as two springs 4 of the Edge forming outer spring strand 1 are attached.
  • the springs 3, 4 shalltascht and form in the longitudinal direction in each case a spring strand 1, 2.
  • the intermediate spring strand 2 is compared to the other spring strands 1 shorter.

Abstract

The core has springs (3, 4) wound in a helical-shape and arranged adjacent to each other in an axially parallel manner, where the springs (3) comprise large spring stiffness opposite to the springs (4). The springs form spring strands (1, 2) that are arranged one behind the other in a row, and an edge reinforcement is formed at two opposite edges of the spring core through the springs (3) that are connected with the springs (4) of the adjacent spring strand. The springs are arranged in bags from a flexible material e.g. textile material, where the bags are connected with one another.

Description

Die Erfindung betrifft einen Federkern mit Randverstärkung nach dem Oberbegriff des Anspruchs 1.The invention relates to a spring core with edge reinforcement according to the preamble of claim 1.

Solche Federkerne finden in vielen Anwendungsbereichen Verwendung. Vornehmlich kommen sie bei der Herstellung von Matratzen oder Möbelpolstern zum Einsatz.Such spring cores are used in many applications. Primarily they are used in the production of mattresses or furniture upholstery.

Um eine ausreichende Kantenstabilität zu erreichen, die insbesondere dann gewünscht ist, wenn das Polster oder die Matratze als Sitzgelegenheit genutzt wird, ist es bekannt, den Federkern ober- und unterseitig mit einer Randverstärkung zu versehen, die aus einem Rund- oder Flachmaterial, vorzugsweise aus Metall, besteht.In order to achieve sufficient edge stability, which is particularly desirable when the pad or mattress is used as a seat, it is known to provide the spring core on the top and bottom with a rim reinforcement, made of a round or flat material, preferably made of Metal, exists.

Ein solcher Federkern ist beispielsweise aus der DE 16 54 319 A1 bekannt. Allerdings ist dieser Federkern nicht auf- und entrollbar, so dass er den gestellten Anforderungen nicht gerecht wird.Such a spring core is for example from the DE 16 54 319 A1 known. However, this spring core is not up and unrolled, so that he does not meet the requirements.

Zur Fertigstellung des Endproduktes Matratze oder Polsterteil müssen nämlich die Federkerne üblicherweise vom Herstellungsort zur Matratzenanfertigung transportiert werden, wobei die jeweiligen Fertigungsstätten räumlich sehr weit auseinander liegen können.For the completion of the end product mattress or upholstery, namely the spring cores usually transported from the production to mattress production where the respective production sites can be very far apart.

Da die Federkerne aufgrund ihrer Beschaffenheit in Gebrauchsposition ein relativ großes Volumen bei gleichzeitig geringem Gewicht einnehmen, sind die Transportkosten dieser Federkerne unverhältnismäßig hoch.Since the spring cores occupy a relatively large volume at the same time low weight due to their nature in use position, the transport costs of these spring cores are disproportionately high.

Um eine Kostenreduzierung zu erreichen, ist es daher bekannt, die Randverstärkung aus Blechstreifen herzustellen, die es erlauben, den Federkern zum Transport aufzurollen.To achieve a cost reduction, it is therefore known to produce the edge reinforcement of sheet metal strips, which allow to roll up the spring core for transport.

Allerdings ist die Bestückung des Federkerns mit solchen Metallrahmen äußerst arbeitsintensiv und kostenaufwendig, so dass die Kostenersparnis aufgrund der besseren Transportmöglichkeit zum Teil wieder verzerrt wird.However, the assembly of the spring core with such metal frame is extremely labor-intensive and expensive, so that the cost savings due to the better transportability is partially distorted again.

Dieser Umstand steht naturgemäß einer stets angestrebten Kostenoptimierung entgegen, was sich insofern als besonders nachteilig darstellt, als Federkerne in großen Stückzahlen hergestellt und weiterverarbeitet werden.This circumstance is naturally contrary to an always desired cost optimization, which is so far as particularly disadvantageous as spring cores are produced in large quantities and further processed.

Der Erfindung liegt die Aufgabe zugrunde, einen Federkern der gattungsgemäßen Art so weiterzuentwickeln, dass er einfacher und kostengünstiger herstellbar ist, bei gleichzeitig optimierter Transportfähigkeit.The invention has for its object to further develop a spring core of the generic type so that it is easier and cheaper to produce, at the same time optimized transportability.

Diese Aufgabe wird durch einen Federkern mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a spring core with the features of claim 1.

Ein solcher Federkern lässt sich einfacher, d.h., weniger arbeitsintensiv als bisher herstellen, wodurch sich die Herstellungskosten insgesamt wesentlich verringern.Such a spring core is simpler, i.e. less labor intensive, than previously produced, thereby significantly reducing the overall cost of manufacture.

Trotzdem bleibt die gewünschte Funktion der Randverstärkung vollständig erhalten. Hierzu zählt vor allem eine notwendige Härte des Randbereichs wie sie bei einem Sitzpolster eines Sitzmöbels gewünscht wird, um ein vor allem bequemeres Aufstehen aus dem Sitzmöbel zu erreichen. In diesem Fall bildet die Randverstärkung ein Widerlager zur Abstützung der aufliegenden Oberschenkel des Benutzers, während die eigentliche Sitzfläche den gewünschten Komfort aufweist.Nevertheless, the desired function of edge enhancement is fully preserved. This includes above all a necessary hardness of the edge area as is desired in a seat cushion of a chair, in order to achieve a more comfortable getting up from the seating. In this case, the edge reinforcement forms an abutment for supporting the resting thighs of the user, while the actual seat has the desired comfort.

Vergleichbar ist dieser Vorteil auch bei Matratzen, da durch die Randverstärkung eine bequemere Nutzung der Matratze beim Ein- und Aussteigen in bzw. aus einem Liegemöbel gewährleistet ist.Comparable this advantage is also in mattresses, as a more comfortable use of the mattress when entering and exiting is guaranteed by the edge reinforcement in or out of a reclining furniture.

Nach einer vorteilhaften Weiterbildung der Erfindung wird die Randverstärkung dadurch gebildet, dass die sich gegenüberliegenden und Außenkanten bildenden Federn, die erfindungsgemäß jeweils mit zwei Federn des benachbarten Federstrangs verbunden sind, in einer Lücke zwischen den beiden zugeordneten Federn des besagten Federstrangs gelagert sind, wobei diese Lücke durch eine abständige Anordnung der beiden Federn des Federstrangs gebildet ist.According to an advantageous embodiment of the invention, the edge reinforcement is formed by the fact that the opposing and outer edges forming springs which are inventively connected to two springs of the adjacent spring strand are stored in a gap between the two associated springs of said spring strand, said gap is formed by a remote arrangement of the two springs of the spring strand.

Diese sozusagen Nestbildung führt zu einer Verbesserung der Maßstabilität.This so-called nest formation leads to an improvement in dimensional stability.

Das Federverhalten der Randverstärkung kann durch Veränderung der Drahtstärke, der Federform, der Anzahl der Windungen oder einer entsprechenden Materialwahl beeinflusst werden.The spring behavior of the edge reinforcement can be influenced by changing the wire size, the spring shape, the number of turns or a suitable choice of material.

Dabei ist die Drahtstärke der Randfedern größer als die der übrigen Federn des Federkerns. Dies gilt vergleichbar auch für die übrigen Unterscheidungsmerkmale, die in jedem Fall zu einer größeren Härte der Randfedern führen als die Härte der übrigen Federn.The wire thickness of the edge springs is greater than that of the remaining springs of the spring core. This also applies to the other distinguishing features, which in any case lead to a greater hardness of the edge springs than the hardness of the other springs.

Bevorzugt findet die Erfindung Verwendung bei einem als Taschenfederkern ausgebildeten Federkern, bei dem die einzelnen Federn in eine vorzugsweise textile Hülle eingetascht sind. Hierbei sind die Federn eines Federstrangs durch das textile Material miteinander verbunden. Die die randseitigen Federstränge bildenden Federn bzw. die diese umhüllenden Taschen sind mit dem benachbarten, d.h., zugeordneten Federstrang bevorzugt verklebt, wodurch ein fester Verbund der beiden Federstränge gewährleistet ist.Preferably, the invention finds use in a spring formed as a pocket spring core, in which the individual springs are eingetascht in a preferably textile casing. Here, the springs of a spring strand are connected to each other by the textile material. The peripheral spring strands forming springs or the enveloping these pockets are preferably bonded to the adjacent, ie, associated spring strand, whereby a solid composite of the two spring strands is guaranteed.

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

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der beifügten Zeichnungen beschrieben.Embodiments of the invention are described below with reference to the accompanying drawings.

Es zeigen:

Figur 1
eine Draufsicht auf einen schematisch dargestellten Federkern
Figur 2
ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Federkerns, ebenfalls in einer Draufsicht.
Show it:
FIG. 1
a plan view of a spring core shown schematically
FIG. 2
a further embodiment of a spring core according to the invention, also in a plan view.

In den Figuren ist ein Federkern dargestellt, mit einer Vielzahl achsparallel nebeneinander angeordneter, schraubenförmig gewundener Federn 3, 4, von denen mehrere hintereinander in einer Reihe angeordnet einen Federstrang 1, 2 bilden.In the figures, a spring core is shown, with a plurality of axially parallel juxtaposed, helically wound springs 3, 4, of which a plurality of successively arranged in a row form a spring strand 1, 2.

Erfindungsgemäß sind an zumindest zwei sich gegenüberliegenden Rändern des Federkerns Federn 3 angeordnet, von denen jede mit zwei Federn 4 des benachbarten Federstrangs 1 verbunden ist.According to the invention springs 3 are arranged on at least two opposite edges of the spring core, each of which is connected to two springs 4 of the adjacent spring strand 1.

In den vorliegenden Ausführungsbeispielen ist der Federkern als Taschenfederkern ausgebildet, bei dem die Federn 3, 4 jeweils in einer Tasche aus einem vorzugsweise textilen Material einliegen, wobei diese Taschen durch Stege 6 miteinander verbunden sind. Durch die Stege 6 sind die Taschen und damit die Federn 3, 4 abständig zueinander angeordnet.In the present embodiments, the spring core is formed as a pocket spring core, in which the springs 3, 4 each in a pocket of a preferably textile material einliegen, said pockets are connected by webs 6 together. By the webs 6, the pockets and thus the springs 3, 4 are spaced apart.

Die an den beiden Rändern des Federkerns angeordneten Federn 3 bilden gemeinsam ebenfalls einen Federstrang, der mit dem Bezugszeichen 2 versehen ist und der ebenfalls Stege 6 aufweist, die in ihrer Länge den Stegen 6 der übrigen Federstränge 1 entsprechen.The arranged at the two edges of the spring core springs 3 also together form a spring strand, which is provided with the reference numeral 2 and also has webs 6, which correspond in length to the webs 6 of the remaining spring strands 1.

Die die äußeren Federstränge 2 bildenden Federn 3 des Federkerns nach Figur 1 liegen in den durch die Stege 6 gebildeten Zwischenräumen zwischen zwei zugeordneten Federn 4 des benachbarten Federstrangs 1 und sind dort mit einer in diesem Beispiel Klebenaht 5 mit den anliegenden Federn 4 bzw. deren umhüllenden Taschen verbunden.The outer spring strands 2 forming springs 3 of the spring core after FIG. 1 lie in the spaces formed by the webs 6 between two associated Springs 4 of the adjacent spring strand 1 and are connected there with an adhesive seam 5 in this example with the adjacent springs 4 and their enveloping pockets.

Somit ergibt sich ein sozusagen Zick-Zack-Verbund zwischen den beiden eine Randverstärkung bildenden äußeren Federsträngen 1, 2.This results in a so-called zig-zag connection between the two outer spring strands 1, 2 forming an edge reinforcement.

Bei dem in der Figur 2 gezeigten Ausführungsbeispiel sind die Federstränge 2 außenseitig zwischen zwei gleichen Federsträngen 1 angeordnet, von denen jeweils einer den äußeren Federstrang bildet, während die Federn 3 des zwischengelagerten Federstrangs 2 sowohl jeweils mit zwei Federn des praktisch innen liegenden Federstrangs 1 wie auch mit zwei Federn 4 des den Rand bildenden äußeren Federstrangs 1 befestigt sind. Auch hierbei sind die Federn 3, 4 eingetascht und bilden in Längsrichtung jeweils einen Federstrang 1, 2. Der zwischenliegende Federstrang 2 ist, gegenüber den übrigen Federsträngen 1 kürzer.In the in the FIG. 2 shown embodiment, the spring strands 2 are arranged on the outside between two identical spring strands 1, one of which forms the outer spring strand, while the springs 3 of the interposed spring strand 2 both with two springs of the practically inner spring strand 1 as well as two springs 4 of the Edge forming outer spring strand 1 are attached. Again, the springs 3, 4 eingetascht and form in the longitudinal direction in each case a spring strand 1, 2. The intermediate spring strand 2 is compared to the other spring strands 1 shorter.

Claims (6)

Federkern mit einer Vielzahl achsparallel nebeneinander angeordneter, schraubenförmig gewundener Federn (3, 4), von denen mehrere hintereinander in einer Reihe angeordnete einen Federstrang (1, 2) bilden, und einer Randverstärkung, dadurch gekennzeichnet, dass die Randverstärkung an zumindest zwei sich gegenüberliegenden Rändern des Federkerns durch Federn (3) gebildet ist, die jeweils mit zwei Federn (4) des benachbarten Federstrangs (1) verbunden sind.Innerspring with a plurality of axially parallel juxtaposed, helically wound springs (3, 4), of which a plurality of successively arranged in a row form a spring strand (1, 2), and an edge reinforcement, characterized in that the edge reinforcement on at least two opposite edges of the spring core is formed by springs (3) which are each connected to two springs (4) of the adjacent spring strand (1). Federkern nach Anspruch 1, dadurch gekennzeichnet, dass die den Rand bildenden äußeren Federn (3) in einem zwischen zwei Federn (4) des benachbarten Federstrangs (1) gebildeten Zwischenraum gelagert sind.Spring core according to Claim 1, characterized in that the outer springs (3) forming the edge are mounted in a space formed between two springs (4) of the adjacent spring strand (1). Federkern nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die äußeren Federn (3) einen Federstrang (2) bilden.Spring core according to claim 1 or 2, characterized in that the outer springs (3) form a spring strand (2). Federkern nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die äußeren Federn (3) eine gegenüber den übrigen Federn (4) größere Federhärte aufweisen.Spring core according to one of the preceding claims, characterized in that the outer springs (3) have a greater spring stiffness than the other springs (4). Federkern nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die äußeren Federn (3) in ihrer Drahtstärke, Form oder Materialbeschaffenheit unterschiedlich sind gegenüber den übrigen Federn (4).Spring core according to one of the preceding claims, characterized in that the outer springs (3) are different in their wire thickness, shape or material quality compared to the other springs (4). Federkern nach einem der vorhergehenden Ansprüche, wobei die Federn (3, 4) eines Federstrangs (1, 2) in Taschen aus einem flexiblen Material, vorzugsweise einem textilen Material einliegen, dadurch gekennzeichnet, dass die Taschen der Federstränge (2) der sich gegenüberliegenden Ränder mit den Taschen der benachbarten Federstränge (1) verklebt sind.Spring core according to one of the preceding claims, wherein the springs (3, 4) of a spring strand (1, 2) in pockets of a flexible material, preferably a textile material einliegen, characterized in that the pockets of the spring strands (2) of the opposite edges are glued to the pockets of the adjacent spring strands (1).
EP09160595.6A 2008-05-21 2009-05-19 Spring core with reinforced edges Active EP2123197B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HRP20161386TT HRP20161386T1 (en) 2008-05-21 2016-10-25 Spring core with reinforced edges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008024529A DE102008024529A1 (en) 2008-05-21 2008-05-21 Spring core with edge reinforcement

Publications (2)

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EP2123197A1 true EP2123197A1 (en) 2009-11-25
EP2123197B1 EP2123197B1 (en) 2016-08-03

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US (1) US7979935B2 (en)
EP (1) EP2123197B1 (en)
DE (1) DE102008024529A1 (en)
HR (1) HRP20161386T1 (en)
PL (1) PL2123197T3 (en)
PT (1) PT2123197T (en)

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EP2952122A1 (en) * 2014-06-02 2015-12-09 AGRO Holding GmbH Cushion with pocket sprung core

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DE102008024529A1 (en) * 2008-05-21 2009-11-26 Agro Holding Gmbh Spring core with edge reinforcement
CN102871417A (en) * 2011-07-12 2013-01-16 江苏君梦美床垫有限公司 Spring mattress with edge being not easy to collapse
US10477979B2 (en) * 2016-08-19 2019-11-19 L&P Property Management Company Pocketed spring assembly
US10206515B1 (en) * 2017-09-20 2019-02-19 L&P Property Management Company Pocketed spring assembly
US11013340B2 (en) * 2018-05-23 2021-05-25 L&P Property Management Company Pocketed spring assembly having dimensionally stabilizing substrate
CN112716199A (en) * 2021-01-15 2021-04-30 广州市联柔机械设备有限公司 Bagged spring bed core and mattress
SE544850C2 (en) * 2021-01-22 2022-12-13 Ikea Supply Ag Mattress spring core compricing a sheet arranged with a sheet material having a density rendering improved shape and size stability
SE544841C2 (en) * 2021-01-22 2022-12-13 Ikea Supply Ag Mattress spring core arranged with spring pockets allowing improved shape and size stability

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DE4031654A1 (en) * 1990-10-05 1992-04-09 Hueser Schlaraffia Werke Pocket spring cord for mattress - has chains of springs wrapped in fabric pockets with adhesive and bridge pieces joining them
DE29722598U1 (en) * 1997-12-20 1998-02-26 Federnwerke Marienberg Gmbh Pocket spring core
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HRP20161386T1 (en) 2016-12-02
EP2123197B1 (en) 2016-08-03

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