EP0139956A2 - Spring core for a mattress - Google Patents

Spring core for a mattress Download PDF

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Publication number
EP0139956A2
EP0139956A2 EP84109738A EP84109738A EP0139956A2 EP 0139956 A2 EP0139956 A2 EP 0139956A2 EP 84109738 A EP84109738 A EP 84109738A EP 84109738 A EP84109738 A EP 84109738A EP 0139956 A2 EP0139956 A2 EP 0139956A2
Authority
EP
European Patent Office
Prior art keywords
spring
leg
springs
spring core
turn
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
EP84109738A
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German (de)
French (fr)
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EP0139956B1 (en
EP0139956A3 (en
Inventor
Alan Thoenen
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Spuehl AG
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Spuehl AG
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Publication date
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Priority to AT84109738T priority Critical patent/ATE38318T1/en
Publication of EP0139956A2 publication Critical patent/EP0139956A2/en
Publication of EP0139956A3 publication Critical patent/EP0139956A3/en
Application granted granted Critical
Publication of EP0139956B1 publication Critical patent/EP0139956B1/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
    • A47C23/0438—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
    • 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
    • A47C23/05—Frames therefor; Connecting the springs to the frame ; Interconnection of springs, e.g. in spring units
    • 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
    • A47C27/065—Spring inlays of special shape
    • 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
    • A47C27/07—Attaching, or interconnecting of, springs in spring inlays

Definitions

  • the invention relates to a spring core for a mattress with a plurality of identically shaped, arranged in rows next to each other, coil springs, each of which is formed from a piece of wire and each has an upper and lower mutually aligned end turn, each of which is approximately U-shaped and the other opposite legs are connected to one another by a base web, adjacent coil springs being connected to one another at their end turns along the respectively abutting legs by helical connecting springs.
  • a spring core mentioned at the outset is known from DE-OS 3 321 991, which goes back to the same applicant.
  • the opposite legs of the U-shaped end windings are of the same length there.
  • adjacent coil springs are connected to one another at their end turns along the respectively adjacent legs by means of helical connecting springs.
  • the row and column-shaped coil springs therefore do not form an angle of 90 °, but an angle deviating therefrom, which would lead to diamond-shaped external dimensions of the spring core if one did not take corresponding corrective measures in the automatic assembly machine. However, this involves an increased effort.
  • the invention therefore has the task of developing a spring core according to the subject of DE-OS 3 321 991 so that an automatic installation of such a spring core is possible without special corrective measures.
  • the previously described offset of the coil springs should therefore be avoided.
  • the invention is characterized in that the length of one leg is greater than the length of the other leg and that, with the exception of an edge region of the spring core, all coil springs are aligned identically.
  • the helical connecting spring always comprises a long leg of one helical spring and a short leg of the other helical spring.
  • the short leg of the one end turn of a particular helical spring for example four turns of the helical connecting spring, is encompassed, while the longer leg of the adjacent end turn of the adjacent helical spring is covered by five turns of the helical connecting spring is included.
  • the coil springs are inserted upside down on the narrow sides in order to avoid that the end turns, which are open to the outside, point towards the outside of the mattress. There is a risk that these outward, open end turns rub through the upholstery. Due to the end turns pointing inwards in the edge area, it is possible to lay a circumferential surrounding wire around the spring core in the upper and lower levels, which is connected to the edge legs of the end turns of the coil springs by means of an associated, circumferential connecting spring.
  • a slightly arcuate piece of wire attaches to the free end of the longer leg, which is bent slightly inwards in the direction of the spring axis.
  • this piece of wire At the front, free end of this piece of wire, there is a kinking end, which is bent obliquely inwards from the plane of the end turns in the direction of the spring axis. This ensures that the end of the end turns does not dig up the padding and does not come into contact with the coil springs (even when subjected to extreme loads). Corresponding touching noises are avoided.
  • each end turn is provided with five bending points.
  • the first bending point forms the transition of the coil of the coil spring into the shorter leg.
  • the second bending point forms the transition of the shorter leg in the base web and the third bending point forms the transition of the base web into the longer leg of the U-shaped end turn.
  • the fourth bending point forms the transition of the longer leg into the bent wire piece and the fifth bending point forms the transition of the wire piece into the inclined bent end.
  • the proposed arrangement of the bending points achieves an excellent fixation of the legs in the helical connecting spring encompassing them. There is only minimal displacement of the coil spring in the connecting spring; harmful squeaking and scratching no longer occur.
  • the coil spring 10 shown in FIG. 1 preferably has two successive screw turns 15, 16, the upper screw turn 15 in the upper level 1 of the spring core ending in a U-shaped curved end turn 11, while the lower screw turn 16 in the lower level 2 of the Spring core runs into a lower end turn 31. Both end turns are 11.31 same, so that the description of a final turn suffices.
  • the end windings 11, 31 lie one above the other in alignment with the spring axis 17.
  • the active length of the wire which determines the spring property of the helical spring 10, extends from position 23 of the upper end turn 11 down to position 24 of the lower end turn 31.
  • FIG. 2 shows the bottom view of the lower end turn 31 in solid lines, while the parts above it, in particular the upper end turn 11, are indicated in dashed lines.
  • the shorter leg 13 of the upper end turn 11 is not shown in FIG. 2.
  • the U-shaped end turn has a lateral distance from the screw turns 15, 16. This is represented by the distance 3 of the longer leg 12 of the end turn from the associated screw turn 16, while on the opposite side the shorter leg 13 has a smaller distance 4 from the screw turn 16 of the coil spring 10. These distances 3, 4 ensure that the end turns do not come into contact with the screw turns 15, 16 even when the coil spring 10 is subjected to extreme loads.
  • the respective final turn is 11.31 U-shaped.
  • the end turn 31 shown in solid lines in FIG. 2 is formed from a shorter leg 13, the base web 18 forming the base of the U and the longer leg 12.
  • the shorter leg 13 of the U-shaped end turn 31 connects to the descending screw turn 16 of the coil spring 10 via a first bending point 5.
  • the shorter leg 13 has a length 26. Via a second bending point 6, the shorter leg 13 runs into the base web 18, which at the time was slightly curved. At the opposite end of the base web 18, a third bending point 7 is arranged, to which one end of the longer leg 12 connects. This in turn runs slightly curved with a length 25 to the fourth bending point 8. There, again slightly curved and bent out of the plane 1, 2 of the mattress, a piece of wire 28 attaches to the front free end of which via a fifth bending point 9 the kinking end 14 starts.
  • bent wire piece 28 with the bent end 14 attached to it can be seen from FIG. 5.
  • the wire pieces 28 with the kink ends 14 attached to them are each bent obliquely inwards in the direction of the spring axis 17, so that there is no contact with the screw turns 15, 16 of the coil springs 10, 10 ', and no excavation of the upholstery is to be feared.
  • the respective wire end of the open end turn 11, 31 is thus optimally protected.
  • the upper end turn 11 is formed in an analogous manner to the lower end turn 31, as can be seen from the dashed line Representation in Figure 2 results.
  • FIGS. 3 to 5 show a partially assembled spring core.
  • FIGS. 3 and 4 also show the edge region 27 of the spring core, where it can be seen that only in this edge region 27 are the coil springs 10, which are otherwise oriented the same way, so that the otherwise lower end turn 31 lies there at the top.
  • FIGS. 3 and 4 show the coil springs 10 arranged in rows and columns.
  • the connecting lines 19 through the spring axes 17 form vertical lines in the drawing plane of FIG. 4, while horizontal lines are defined in an analogous manner through the connecting lines 19a.
  • the connecting lines 19, 19a intersect at right angles, so that the edge sides of the spring core assembled in this way also form right angles. The formation of said right angles does not lead to the offset previously described in connection with DE-OS 33 21 991, which could only be eliminated by corresponding corrections on the assembly machine.
  • bent wire pieces 28 with the bending ends 14 attached to them are each bent inwards in the direction of the spring axis 17, 17 '. They are each bent out of the plane 1.2 of the innerspring, so that an undesirable contact with the upholstery material is excluded in any case.

Landscapes

  • Springs (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Finger-Pressure Massage (AREA)

Abstract

The spring core for a mattress consists of several, identically formed spring coils arranged in side by side rows with each row forming a wire piece having an upper and a lower mutually aligned end spiral in a U-shape, and having opposite legs joined together by a base webb. Adjacent coil springs are joined together at their end spirals along abutting legs by helical connecting springs. To arrange the springs at tight angles in rows and columns, a length of one leg is greater than the length of another leg and all the coil springs are oriented in the same direction, except along a edge region of the spring core.

Description

Die Erfindung betrifft einen Federkern für eine Matratze mit mehreren gleich geformten, in Reihen nebeneinander angeordneten, Schraubenfedern, von denen jede aus einem Drahtstück geformt ist und jeweils eine obere und untere zueinander fluchtende Endwindung aufweist, die jeweils annähernd U-förmig gebogen ist und deren einander gegenüberliegende Schenkel durch einen Basissteg miteinander verbunden sind, wobei benachbarte Schraubenfedern an ihren Endwindungen entlang der jeweils aneinander anliegenden Schenkel durch schraubenförmige Verbindungsfedern miteinander verbunden sind.The invention relates to a spring core for a mattress with a plurality of identically shaped, arranged in rows next to each other, coil springs, each of which is formed from a piece of wire and each has an upper and lower mutually aligned end turn, each of which is approximately U-shaped and the other opposite legs are connected to one another by a base web, adjacent coil springs being connected to one another at their end turns along the respectively abutting legs by helical connecting springs.

Ein eingangs genannter Federkern ist mit der auf den gleichen Anmelder zurückaehenden DE-OS 3 321 991 bekannt geworden. Die einander gegenüberliegenden Schenkel der U-förmig gebogenen Endwindungen sind jedoch dort gleich lang ausgebildet. Bei einer automatischen Montage des Federkerns werden benachbarte Schraubenfedern an ihren Endwindungen entlang der jeweils aneinanderliegenden Schenkel durch schraubenförmige Verbindungsfedern miteinander verbunden. Bei der Montage von Schraubenfedern nach dem Gegenstand der DE-OS 3 321 991 hat sich gezeigt, daß es zu einem Versatz der Schraubenfedern kommt, das heisst, ohne Korrekturmaßnahmen in der automatischen Montagemaschine würde der in seinen Außenumrissen rechteckige oder quadratische Federkern zu einer Raute verzerrt werden. Die zeilen- und spaltenförmig angeordneten Schraubenfedern bilden also keinen Winkel von 90°, sondern einen davon abweichenden Winkel, was insgesamt zu rautenförmigen Außenabmessungen des Federkerns führen würde, würde man nicht entsprechendeKorrekturmaßnahmenbei der automatischen Montagemaschine vornehmen. Damit ist jedoch ein erhöhter Aufwand verbunden.A spring core mentioned at the outset is known from DE-OS 3 321 991, which goes back to the same applicant. The opposite legs of the U-shaped end windings are of the same length there. In the case of automatic assembly of the spring core, adjacent coil springs are connected to one another at their end turns along the respectively adjacent legs by means of helical connecting springs. When assembling helical springs according to the subject of DE-OS 3 321 991 it has been shown that there is an offset of the helical springs, that is, without corrective measures in the automatic assembly machine, the rectangular or square innerspring in its outer contours would be distorted into a rhombus will. The row and column-shaped coil springs therefore do not form an angle of 90 °, but an angle deviating therefrom, which would lead to diamond-shaped external dimensions of the spring core if one did not take corresponding corrective measures in the automatic assembly machine. However, this involves an increased effort.

Die Erfindung hat daher die Aufgabe, einen Federkern nach dem Gegenstand der DE-OS 3 321 991 so weiterzubilden, daß eine automatische Montage eines solchen Federkerns ohne besondere Korrekturmaßnahmen möglich ist. Der vorher beschriebene Versatz der Schraubenfedern soll also vermieden werden.The invention therefore has the task of developing a spring core according to the subject of DE-OS 3 321 991 so that an automatic installation of such a spring core is possible without special corrective measures. The previously described offset of the coil springs should therefore be avoided.

Zur Lösung der gestellten Aufgabe ist die Erfindung dadurch gekennzeichnet, daß die Länge des einen Schenkels größer ist als die Länge des anderen Schenkels und daß mit Ausnahme eines Randbereichs des Federkerns alle Schraubenfedern gleich ausgerichtet sind.To achieve the object, the invention is characterized in that the length of one leg is greater than the length of the other leg and that, with the exception of an edge region of the spring core, all coil springs are aligned identically.

Durch die Wahl unterschiedlicher Längen der einander gegenüberliegenden U-Schenkel der U-förmig gebogenen Endwindun- gen hat sich nämlich gezeigt, daß der sonst eintretende Versatz der Schraubenfedern verhindert wird.By choosing different lengths of the opposed U-legs of the U-shaped bent Endwindun - gene has been shown that the otherwise occurring offset of the coil springs is prevented.

Wesentlich ist hierbei, daß im Verbindungsbereich benachbarter, aneinander anliegender Endwindungen von benachbarten Schraubenfedern die schraubenförmige Verbindungsfeder stets einen langen Schenkel der einen Schraubenfeder und einen kurzen Schenkel der anderen Schraubenfeder umfasst..It is essential here that in the connection area of adjacent, mutually abutting end turns of adjacent helical springs, the helical connecting spring always comprises a long leg of one helical spring and a short leg of the other helical spring.

Hierbei wird es nach dem Gegenstand des Anspruches 7 bevorzugt, wenn die Anzahl der Federwindungen der schraubenförmigen Verbindungsfeder, welche einen langen Schenkel umfassen, um eine Federwindung größer ist, als die Anzahl der Federwindungen, welche einen kurzen. Schenkel umfassen.It is preferred according to the subject matter of claim 7 if the number of spring turns of the helical connecting spring, which comprise a long leg, is larger by one spring turn than the number of spring turns, which is a short. Embrace thighs.

Im Verbindungsbereich benachbarter, aneinander anliegender Endwindungen wird also der kurze Schenkel der einen Endwindung einer bestimmten Schraubenfeder, z.B. von vier Windungen der schraubenförmigen Verbindungsfeder , umfasst, während der längere Schenkel der benachbarten Endwindung der benachbarten Schraubenfeder von fünf Windungen der schraubenförmigen Verbindungsfeder umfasst wird.In the connection area of adjacent, mutually adjoining end turns, the short leg of the one end turn of a particular helical spring, for example four turns of the helical connecting spring, is encompassed, while the longer leg of the adjacent end turn of the adjacent helical spring is covered by five turns of the helical connecting spring is included.

Hierdurch wird eine einfache Montage der zeilen- und spaltenförmig angeordneten Schraubenfedern durch die Verbindungsfedern erreicht. Ein Versatz tritt nicht mehr ein, weil vergleichsweise eine automatische Korrektur des sonst vorhandenen Versatzes eintritt. Dadurch können aufwendige Korrekturmaßnahmen an der Montagemaschine entfallen, und die Montage ist einfacher und kostengünstiger durchzuführen.In this way, a simple assembly of the coil springs arranged in rows and columns is achieved by the connecting springs. An offset no longer occurs because, by comparison, an automatic correction of the otherwise existing offset occurs. As a result, complex corrective measures on the assembly machine can be dispensed with, and assembly is easier and less expensive to carry out.

Zur Lösung der gestellten Aufgabe dient das zweitgenannte Merkmal im kennzeichnenden Teil des Anspruches 1 , weil alle Schraubenfedern mit Ausnahme der Schraubenfedern an den schmalseitigen Stirnseiten gleich ausgerichtet werden können und sich trotzdem ein homogener Federkern mit ausgezeichneter Abstützung ergibt.To solve the problem, the second feature mentioned in the characterizing part of claim 1, because all coil springs can be aligned with the exception of the coil springs on the narrow end faces and still results in a homogeneous spring core with excellent support.

An den Schmalseiten werden die Schraubenfedern umgedreht eingesetzt, um zu vermeiden, daß die nach außen offenen Endwindungen zur Außenseite der Matratze hin zeigen. Hierbei bestünde die Gefahr, daß diese nach außen gerichteten, offenen Endwindungen die Polsterung durchscheuern. Durch die im Randbereich nach innen weisenden Endwindungen ist es möglich, rings um den Federkern jeweils in der oberen und unteren Ebene einen umlaufenden Umfassungsdraht zu verlegen, der durch eine zugeordnete , randseitig umlaufende Verbindungsfeder mit den randseitigen Schenkeln der Endwindungen der Schraubenfedern verbunden ist.The coil springs are inserted upside down on the narrow sides in order to avoid that the end turns, which are open to the outside, point towards the outside of the mattress. There is a risk that these outward, open end turns rub through the upholstery. Due to the end turns pointing inwards in the edge area, it is possible to lay a circumferential surrounding wire around the spring core in the upper and lower levels, which is connected to the edge legs of the end turns of the coil springs by means of an associated, circumferential connecting spring.

Durch die leicht bogenförmige Krümmung der beiden einander gegenüberliegenden Schenkel der U-förmig gebogenen Endwindungen wird ein Ergreifen dieser Endwindungen durch die Zangen der Montagemaschine erleichtert.Due to the slightly arcuate curvature of the two opposing legs of the U-shaped end windings, gripping of these end windings is made easier by the pliers of the assembly machine.

Nach dem Gegenstand des Anspruches 4 wird es bevorzugt, wenn jeweils am freien Ende des längeren Schenkels ein leicht bogenförmig gekrümmtes Drahtstück ansetzt, welches leicht einwärts in Richtung zur Federachse gebogen ist. Am vorderen, freien Ende dieses Drahtstücks sitzt ein Knickende an, welches aus der Ebene der Endwindungen heraus jeweils schräg nach innen in Richtung zur Federachse gebogen ist. Hierdurch wird gewährleistet, daß das Ende der Endwindungen nicht die Polsterung aufschürft und nicht mit den Schraubenfedern (auch bei extremer Belastung derselben) in Berührung kommt. Entsprechende Berührungsgeräusche werden damit vermieden.According to the subject matter of claim 4, it is preferred if a slightly arcuate piece of wire attaches to the free end of the longer leg, which is bent slightly inwards in the direction of the spring axis. At the front, free end of this piece of wire, there is a kinking end, which is bent obliquely inwards from the plane of the end turns in the direction of the spring axis. This ensures that the end of the end turns does not dig up the padding and does not come into contact with the coil springs (even when subjected to extreme loads). Corresponding touching noises are avoided.

In einer bevorzugten Ausführungsform der vorliegenden Erfindung ist jede Endwindung mit fünf Biegestellen versehen. Die erste Biegestelle bildet hierbei den Übergang der Schraubenwindung der Schraubenfeder in den kürzeren Schenkel. Die zweite Biegestelle bildet den Übergang des kürzeren Schenkels in dem Basissteg und die dritte Biegestelle den Übergang des Basisstegs in den längeren Schenkel der U-förmig gebogenen Endwindung. Die vierte Biegestelle bildet den Übergang des längeren Schenkels in das abgebogene Drahtstück und die fünfte Biegestelle den Übergang des Drahtstücks in das schräg abgebogene Knickende. Durch die vorgeschlagene Anordnung der Biegestellen wird eine ausgezeichnete Fixierung der Schenkel in der sie umgreifenden schraubenförmigen Verbindungsfeder erreicht. Es kommt hierbei nur zu minimalen Verschiebungen der Schraubenfeder in der Verbindungsfeder; schädliche Quietsch- und Kratzgeräusche treten nicht mehr auf.In a preferred embodiment of the present invention, each end turn is provided with five bending points. The first bending point forms the transition of the coil of the coil spring into the shorter leg. The second bending point forms the transition of the shorter leg in the base web and the third bending point forms the transition of the base web into the longer leg of the U-shaped end turn. The fourth bending point forms the transition of the longer leg into the bent wire piece and the fifth bending point forms the transition of the wire piece into the inclined bent end. The proposed arrangement of the bending points achieves an excellent fixation of the legs in the helical connecting spring encompassing them. There is only minimal displacement of the coil spring in the connecting spring; harmful squeaking and scratching no longer occur.

Der Erfindungsgegenstand der vorliegenden Erfindung ergibt sich nicht nur aus dem Gegenstand der einzelnen Patentansprüche, sondern auch aus der Kombination der einzelnen Patentansprüche untereinander.The subject matter of the present invention results not only from the subject matter of the individual patent claims, but also from the combination of the individual patent claims with one another.

Alle in den Unterlagen offenbarten Angaben und Merkmale, insbesondere die in den Zeichnungen dargestellte, räumliche Ausbildung werden als erfindungswesentlich beansprucht, soweit sie einzeln oder in Kombination gegenüber dem Stand der Technik neu sind.All of the information and features disclosed in the documents, in particular the spatial design shown in the drawings, are claimed to be essential to the invention insofar as they are new to the prior art, individually or in combination.

Im folgenden wird die Erfindung anhand von lediglich einen Ausführungsweg darstellende Zeichnungen näher erläutert. Hierbei gehen aus den Zeichnungen und ihrer Beschreibung weitere erfindungswesentliche Merkmale und Vorteile der Erfindung hervor.The invention is explained in more detail below with the aid of drawings which illustrate only one embodiment. Further features and advantages of the invention which are essential to the invention emerge from the drawings and their description.

Es zeigen:

  • Figur 1: perspektivische Seitenansicht einer Schraubenfeder nach der Erfindung,
  • Figur 2: Draufsicht auf die Stirnseite der Schraubenfeder nach Figur 1,
  • Figur 3: perspektivische Seitenansicht eines Teils eines Federkerns,
  • Figur 4: Draufsicht auf die Eckpartie eines Federkerns nach Figur 3,
  • Figur 5: Stirnansicht des Federkerns in Richtung des Pfeiles V in Figur 3 und 4.
Show it:
  • FIG. 1: perspective side view of a coil spring according to the invention,
  • FIG. 2: top view of the end face of the coil spring according to FIG. 1,
  • FIG. 3: perspective side view of part of a spring core,
  • FIG. 4: top view of the corner part of a spring core according to FIG. 3,
  • Figure 5: Front view of the spring core in the direction of arrow V in Figures 3 and 4.

Die in Figur 1 dargestellte Schraubenfeder 10 weist bevorzugt zwei aufeinanderfolgende Schraubenwindungen 15,16 auf, wobei die obere Schraubenwindung 15 in der oberen Ebene 1 des Federkerns in eine U-förmig gebogene Endwindung 11 ausläuft, während die untere Schraubenwindung 16 in der unteren Ebene 2 des Federkerns in eine untere Endwindung 31 ausläuft. Beide Endwindungen 11,31 sind gleich, so daß die Beschreibung einer Endwindung genügt. Die Endwindungen 11,31 liegen bezüglich der Federachse 17 fluchtend übereinander. Die aktive Länge des Drahtes, welche die Federeigenschaft der Schraubenfeder 10 bestimmt, reicht von der Position 23 der oberen Endwindung 11 bis hinunter zur Position 24 der unteren Endwindung 31. Das heisst, an der Federarbeit nehmen auch Teile der Endwindungen 11,31 teil, insbesondere der Basissteg 18 und der sich daran anschließende, kürzere Schenkel 13 der jeweiligen U-förmig gebogenen Endwindung 11,31. Dies erklärt die sehr günstige Drahtausnutzung, d.h. mit relativ wenig Draht werden überlegene Federungseigenschaften erzielt.The coil spring 10 shown in FIG. 1 preferably has two successive screw turns 15, 16, the upper screw turn 15 in the upper level 1 of the spring core ending in a U-shaped curved end turn 11, while the lower screw turn 16 in the lower level 2 of the Spring core runs into a lower end turn 31. Both end turns are 11.31 same, so that the description of a final turn suffices. The end windings 11, 31 lie one above the other in alignment with the spring axis 17. The active length of the wire, which determines the spring property of the helical spring 10, extends from position 23 of the upper end turn 11 down to position 24 of the lower end turn 31. This means that parts of the end turns 11, 31 also take part in the spring work, in particular the base web 18 and the adjoining, shorter leg 13 of the respective U-shaped end turn 11, 31. This explains the very favorable use of wire, ie superior suspension properties are achieved with relatively little wire.

Zur Erläuterung der Formgebung der jeweilig U-förmig gebo - genen Endwindungen 11,31 wird auf die Darstellung in Figur 1 und Figur 2 verwiesen. In Figur 2 ist die Unteransicht der unteren Endwindung 31 in durchgezogenen Linien dargestellt, während die darüber liegenden Teile, insbesondere die obere Endwindung 11, in gestrichelten Linien angedeutet ist. Der Übersichtlichkeit halber ist der kürzere Schenkel 13 der oberen Endwindung 11 in Figur 2 nicht dargestellt.To explain the shape of the respective U-shaped end windings 11, 31, reference is made to the illustration in FIG. 1 and FIG. 2. FIG. 2 shows the bottom view of the lower end turn 31 in solid lines, while the parts above it, in particular the upper end turn 11, are indicated in dashed lines. For the sake of clarity, the shorter leg 13 of the upper end turn 11 is not shown in FIG. 2.

Wichtig ist zunächst, daß die U-förmig gebogene Endwindung einen seitlichen Abstand von den Schraubenwindungen 15,16 aufweist. Dies wird durch den Abstand 3 des längeren Schenkels 12 der Endwindung von der zugeordneten Schraubenwindung 16 dargestellt, während auf der gegenüberliegenden Seite der kürzere Schenkel 13 einen kleineren Abstand 4 von der Schraubenwindung 16 der Schraubenfeder 10 aufweist. Diese Abstände 3,4 gewährleisten, daß die Endwindungen auch bei extremer Belastung der Schraubenfeder 10 nicht in Berührung mit den Schraubenwindungen 15,16 gelangen.It is important first of all that the U-shaped end turn has a lateral distance from the screw turns 15, 16. This is represented by the distance 3 of the longer leg 12 of the end turn from the associated screw turn 16, while on the opposite side the shorter leg 13 has a smaller distance 4 from the screw turn 16 of the coil spring 10. These distances 3, 4 ensure that the end turns do not come into contact with the screw turns 15, 16 even when the coil spring 10 is subjected to extreme loads.

Wie eingangs beschrieben, ist die jeweilige Endwindung 11,31 U-förmig gebogen. Die in Figur 2 in durchgezogenen Linien dargestellte Endwindung 31 wird aus einem kürzeren Schenkel 13,dem die Basis des U bildenden Basissteg 18 und dem längeren Schenkel 12 gebildet.As described at the beginning, the respective final turn is 11.31 U-shaped. The end turn 31 shown in solid lines in FIG. 2 is formed from a shorter leg 13, the base web 18 forming the base of the U and the longer leg 12.

Der kürzere Schenkel 13 der U-förmigen Endwindung 31 schließt über eine erste Biegestelle 5 an die absteigende Schraubenwindung 16 der Schraubenfeder 10 an.The shorter leg 13 of the U-shaped end turn 31 connects to the descending screw turn 16 of the coil spring 10 via a first bending point 5.

Der kürzere Schenkel 13 weist hierbei eine Länge 26 auf. Über eine zweite Biegestelle 6 verläuft der kürzere Schenkel 13 in den Basissteg 18 ein, der seinerzeit leicht gekrümmt ist. Am gegenüberliegenden Ende des Basissteges 18 ist eine dritte Biegestelle 7 angeordnet, an die sich das eine Ende des längeren Schenkels 12 anschließt. Dieser verläuft wiederum leicht gekrümmt mit einer Länge 25 bis zu der vierten Biegestelle 8. Dort setzt,wiederum leicht gekrümmt und aus der Ebene 1, 2 der Matratze herausgebogen,ein Drahtstück 28 an, an dessem vorderen freien Ende über eine fünfte Biegestelle 9 das Knickende 14 ansetzt.The shorter leg 13 has a length 26. Via a second bending point 6, the shorter leg 13 runs into the base web 18, which at the time was slightly curved. At the opposite end of the base web 18, a third bending point 7 is arranged, to which one end of the longer leg 12 connects. This in turn runs slightly curved with a length 25 to the fourth bending point 8. There, again slightly curved and bent out of the plane 1, 2 of the mattress, a piece of wire 28 attaches to the front free end of which via a fifth bending point 9 the kinking end 14 starts.

Die Bedeutung des abgebogenen Drahtstückes 28 mit dem daran ansetzenden Knickende 14 ist aus Figur 5 zu entnehmen. Dort ist sichtbar, daß im Federkern die Drahtstücke 28 mit den daran ansetzenden Knickenden 14 jeweils schräg einwärts in Richtung zur Federachse 17 gebogen sind, so daß weder eine Berührung mit den Schraubenwindungen 15,16 der Schraubenfedern 10, 10',noch ein Aufschürfen der Polsterung zu befürchten ist. Das jeweilige Drahtende der offenen Endwindung 11,31 ist hierdurch also optimal geschützt.The meaning of the bent wire piece 28 with the bent end 14 attached to it can be seen from FIG. 5. There it can be seen that the wire pieces 28 with the kink ends 14 attached to them are each bent obliquely inwards in the direction of the spring axis 17, so that there is no contact with the screw turns 15, 16 of the coil springs 10, 10 ', and no excavation of the upholstery is to be feared. The respective wire end of the open end turn 11, 31 is thus optimally protected.

In analoger Weise zur unteren Endwindung 31 ist die obere Endwindung 11 ausgebildet, wie sich aus der gestrichelten Darstellung in Figur 2 ergibt.The upper end turn 11 is formed in an analogous manner to the lower end turn 31, as can be seen from the dashed line Representation in Figure 2 results.

Wesentlich hierbei ist, daß sich die beiden längeren Schenkel 12 und die beiden kürzeren Schenkel 13 der beiden übereinanderliegenden und fluchtenden Endwindungen 11,13 genau spiegelsymmetrisch bezüglich einer Längsmittengeraden durch die Federachse 17 gegenüber liegen. Hierdurch wird eine symmetrische Belastung der Schraubenfeder 10 erreicht.It is essential here that the two longer legs 12 and the two shorter legs 13 of the two superimposed and aligned end windings 11, 13 are exactly mirror-symmetrical with respect to one another along a longitudinal center line through the spring axis 17. As a result, a symmetrical loading of the coil spring 10 is achieved.

Die Figuren 3 bis 5 zeigen einen teilweise montierten Federkern. In den Figuren 3 und 4 ist jeweils auch der Randbereich 27 des Federkerns gezeigt, wo ersichtlich ist, daß nur in diesem Randbereich 27 die sonst gleich ausgerichteten Schraubenfedern 10 umgedreht sind, so daß dort jeweils die sonst untere Endwindung 31 oben liegt.Figures 3 to 5 show a partially assembled spring core. FIGS. 3 and 4 also show the edge region 27 of the spring core, where it can be seen that only in this edge region 27 are the coil springs 10, which are otherwise oriented the same way, so that the otherwise lower end turn 31 lies there at the top.

Dadurch wird erreicht, daß stets der Basissteg 18 die Außenkante des Federkerns bildet und damit wird möglich, einen umlaufenden Umfassungsdraht 32 in der oberen und unteren Ebene 1,2 des Federkerns randseitig an die Endwindungen der zugeordneten Schraubenfedern anzuschließen und mit der randseitig umlaufenden Verbindungsfeder 33 mit diesen Schraubenfedern zu befestigen.This ensures that the base web 18 always forms the outer edge of the spring core and thus it is possible to connect a circumferential surrounding wire 32 in the upper and lower levels 1, 2 of the spring core to the end turns of the associated helical springs and to the peripheral spring 33 with the connecting spring 33 to attach these coil springs.

Die Figuren 3 und 4 zeigen die zeilen- und spaltenförmig angeordneten Schraubenfedern 10. Die Verbindungslinien 19 durch die Federachsen 17 bilden hierbei in der Zeichenebene der Figur 4 vertikale Geraden, während in analoger Weise horizontale Linien durch die Verbindungslinien 19a definiert werden. Die Verbindungslinien 19,19a schneiden sich im rechten Winkel, so daß die Randseiten des so zusammenqesetzten Federkerns ebenfalls rechte Winkel bilden. Durch die Bildung der besagten rechten Winkel kommt es nicht zu dem vorher in Zusammenhang mit der DE-OS 33 21 991 beschriebenen Versatz, der nur durch entsprechende Korrekturen an der Montagemaschine beseitigt werden konnte.FIGS. 3 and 4 show the coil springs 10 arranged in rows and columns. The connecting lines 19 through the spring axes 17 form vertical lines in the drawing plane of FIG. 4, while horizontal lines are defined in an analogous manner through the connecting lines 19a. The connecting lines 19, 19a intersect at right angles, so that the edge sides of the spring core assembled in this way also form right angles. The formation of said right angles does not lead to the offset previously described in connection with DE-OS 33 21 991, which could only be eliminated by corresponding corrections on the assembly machine.

Die rechten Winkel werden gemäss der Darstellung in Figur 4 dadurch erhalten, daß bei der schraubenförmigen Verbindungsfeder an der einen Federwindung 20 sowohl der längere Schenkel 12 der einen Schraubenfeder als auch der kürzere Schenkel 13 der benachbarten Schraubenfeder austritt, während an der gegenüberliegenden Seite nach dem Durchlauf von vier Federwindungen der kürzere Schenkel 13 der einen Schraubenfeder an der Federwindung 21 austritt, während der längere Schenkel 12 der benachbarten Schraubenfeder eine Federwindung später, nämlich an der Federwindung 22taustritt.The right angles are obtained as shown in Figure 4 in that in the helical connecting spring at one spring turn 20 both the longer leg 12 of one helical spring and the shorter leg 13 of the adjacent helical spring emerge, while on the opposite side after the passage of four spring turns, the shorter leg 13 of the one coil spring exits the spring turn 21, while the longer leg 12 of the adjacent coil spring exits a spring turn later, namely on the spring turn 22 t .

Ferner ergibt sich aus Figur 3 und Figur 4, daß aufgrund der Knickstellen 5,6 im Bereich der kürzeren Schenkel 13 eine ausgezeichnete Fixierung dieses Schenkels 13 im Bereich der Verbindungsfeder 30 erfolgt..In analoger Weise wird auch der längere Schenkel 12 im Bereich der Knickstellen 7,8 in der Verbindungsfeder 30 fixiert.It also follows from FIG. 3 and FIG. 4 that, due to the kinks 5, 6 in the region of the shorter legs 13, this leg 13 is excellently fixed in the region of the connecting spring 30. In an analogous manner, the longer leg 12 is also in the region of the kinks 7,8 fixed in the connecting spring 30.

Im Randbereich 27 sind die Schraubenfedern umgedreht, so daß die ansonsten unten liegende Endwindung 31 oben liegt.In the edge region 27, the coil springs are turned over so that the end turn 31, which is otherwise at the bottom, is at the top.

In Figur 5 sind zwei nebeneinanderliegende, benachbarte Schraubenfedern dargestellt. Damit ersichtlich ist, welches Teil zu welcher Schraubenfeder gehört, sind alle Bezugszeichen der in Figur 5 rechts dargestellten Schraubenfeder mit einem hochgestellten Strich versehen. Die gleichen Bezeichnungen sind auch in Figur 4 links unten enthalten, so daß erkennbar ist, wo die in Figur 5 gezeigten beiden Schraubenfedern 10,10' im Federkern angeordnet sind.In Figure 5, two adjacent, adjacent coil springs are shown. So that it can be seen which part belongs to which helical spring, all reference numerals of the helical spring shown in FIG. 5 are provided with a prime. The same designations are also included in the bottom left of FIG. 4, so that it can be seen where the two coil springs 10, 10 'shown in FIG. 5 are arranged in the spring core.

Aus der Darstellung in Figur 5 wird deutlich, daß im Bereich der Verbindungsfedern 30 , welche jeweils einen längeren Schenkel 12 der einen Schraubenfeder 10 und einen kürzeren Schenkel 13' der benachbarten Schraubenfeder 10' aufnimmt, diese beiden Schenkel 12,13' übereinander im lichten Querschnitt der Verbindungsfeder 30 angeordnet sind. Hierdurch sind diese Schenkel 12,13' optimal gegen Verschiebung gesichert, was gewährleistet, daß keine unerwünschten Kratz- oder Quietschgeräusche auftreten können.It is clear from the illustration in FIG. 5 that in the area of the connecting springs 30, each of which has a longer leg 12 of one helical spring 10 and a shorter leg 13 'of the adjacent screws spring 10 'takes, these two legs 12,13' are arranged one above the other in the clear cross section of the connecting spring 30. As a result, these legs 12, 13 'are optimally secured against displacement, which ensures that no undesirable scratching or squeaking noises can occur.

Aus der Darstellung wird ferner deutlich, daß die abgebogenen Drahtstücke 28 mit den daran ansetzenden Knickenden 14 jeweils einwärts in Richtung zur Federachse 17, 17' gebogen sind. Sie sind jeweils aus der Ebene 1,2 des Federkerns heraus nach innen gebogen, so daß auf jeden Fall eine unerwünschte Berührung mit dem Polstermaterial ausgeschlossen ist.It is also clear from the illustration that the bent wire pieces 28 with the bending ends 14 attached to them are each bent inwards in the direction of the spring axis 17, 17 '. They are each bent out of the plane 1.2 of the innerspring, so that an undesirable contact with the upholstery material is excluded in any case.

Aus Figur 5 wird ferner deutlich, daß die Basisstege 18, 18' einander benachbarter Schraubenfedern 10,10' sich sozusagen dachziegelförmig überlappen, was zu dem besagten festen Sitz der Schenkel 12,13' bzw. 12', 13 in den Verbindungsfedern 30 führt. Um die besagte Überlappung zu erreichen, ist es erforderlich, daß die Längsachsen der Basisstege 18,18' im Winkel 29 zur Horizontalen geneigt sind, so wie dies aus Figur 5 zu entnehmen ist.It is also clear from FIG. 5 that the base webs 18, 18 'of adjacent coil springs 10, 10' overlap, so to speak, in the manner of a roof tile, which leads to the said tight fit of the legs 12, 13 'and 12', 13 in the connecting springs 30, respectively. In order to achieve said overlap, it is necessary that the longitudinal axes of the base webs 18, 18 'are inclined at an angle 29 to the horizontal, as can be seen in FIG. 5.

Durch die beschriebene gleichsinnige Anordnung aller Schraubenfedern mit Ausnahme der im Randbereich 27 umgedrehten Schraubenfedern und durch die ungleich lange Ausbildung einander benachbarter Schenkel 12,13 wird der Vorteil einer überraschend schnellen und einfachen Montage erreicht, ohne daß besondere Vorkehrungen getroffen werden müssen, um den beschriebenen Versatz zu vermeiden .The described arrangement of all helical springs in the same direction, with the exception of the helical springs turned over in the edge region 27, and the unequal length of adjacent legs 12, 13 achieve the advantage of a surprisingly quick and simple assembly, without special measures having to be taken to achieve the offset described to avoid .

ZEICHNUNGS-LEGENDEDRAWING LEGEND

  • 1 obere Ebene (Endwindung 11)1 upper level (end turn 11)
  • 2 untere Ebene (Endwindung 31)2 lower level (end turn 31)
  • 3 Abstand3 distance
  • 4 Abstand4 distance
  • 5 erste Biegestelle5 first bending point
  • 6 zweite Biegestelle6 second bending point
  • 7 dritte Biegestelle7 third bending point
  • 8 vierte Biegestelle8 fourth bending point
  • 9 fünfte Biegestelle9 fifth bending point
  • 10 Schraubenfeder10 coil spring
  • 11 Endwindung, obere11 final turn, upper
  • 12 langer Schenkel12 long legs
  • 13 kurzer Schenkel13 short legs
  • 14 Knickende14 kinking
  • 15 Schraubenwindung15 screw turn
  • 16 Schraubenwindung16 screw turn
  • 17 Federachse17 spring axle
  • 18 Basissteg18 base bridge
  • 19 Verbindungslinie 19a19 connecting line 19a
  • 20 Federwindung20 spring turn
  • 21 Federwindung21 spring turn
  • 22 Federwindung22 spring turn
  • 23 Position23 position
  • 24 Position24 position
  • 25 Länge ( Schenkel 12)25 length (leg 12)
  • 26 Länge (Schenkel 13)26 length (leg 13)
  • 27 Randbereich27 edge area
  • 28 Drahtstück28 piece of wire
  • 29 Winkel29 angles
  • 30 Verbindungsfeder30 connecting spring
  • 31 untere Endwindung31 lower end turn
  • 32 Umfassungsdraht32 perimeter wire
  • 33 Verbindungsfeder, randseitig33 Connection spring, on the edge

Claims (7)

1. Federkern für eine Matratze mit mehreren gleich geformten in Reihen nebeneinander angeordneten Schraubenfedern (10), von denen jede aus einem Drahtstück geformt ist und jeweils eine obere und untere zueinander fluchtende Endwindung (11,31) aufweist, die jeweils annähernd U-förmig gebogen ist und deren einander gegenüberliegende Schenkel (12,13) durch einen Basissteg (18) miteinander verbunden sind, wobei benachbarte Schraubenfedern (10) an ihren Endwindungen (11) entlang der jeweils aneinander anliegenden Schenkel (12,13) durch schraubenförmige Verbindungsfedern (30) miteinander verbunden sind, dadurch gekennzeichnet , daß die Länge (25) des einen Schenkels (12) größer ist als die Länge (26) des anderen Schenkels (13) und daß mit Ausnahme. eines Randbereichs (27) des Federkerns alle Schraubenfedern (10) gleich ausgerichtet sind.1. Spring core for a mattress with several identically shaped helical springs (10) arranged in rows next to one another, each of which is formed from a piece of wire and each has an upper and lower end winding (11, 31) aligned with one another, each of which is approximately U-shaped and the mutually opposite legs (12, 13) are connected to one another by a base web (18), adjacent coil springs (10) at their end turns (11) along the respectively abutting legs (12, 13) by helical connecting springs (30) are interconnected, characterized in that the length (25) of one leg (12) is greater than the length (26) of the other leg (13) and with the exception. an edge region (27) of the spring core, all helical springs (10) are aligned identically. 2. Federkern nach Anspruch 1, dadurch gekennzeichnet , daß jeder Schenkel (12,13) leicht bogenförmig gekrümmt ist.2. Spring core according to claim 1, characterized in that each leg (12,13) is slightly curved in an arc. 3. Federkern nach Anspruch 1, dadurch gekennzeichnet , daß der Basisschenkel (18) leicht bogenförmig gekrümmt ist.3. Spring core according to claim 1, characterized in that the base leg (18) is slightly curved in an arc. 4. Federkern nach Anspruch 1, dadurch gekennzeichnet, daß jeweils am freien Ende des längeren Schenkels (12) ein leicht bogenförmig gekrümmtes Drahtstück (28) ansetzt, welches leicht einwärts in Richtung zur Federachse (17) gebogen ist und an dessen vorderem freien Ende ein Knickende (14) ansetzt, welches aus der Ebene (1,2) der Endwindungen (11,31) heraus jeweils schräg nach innen in Richtung zur Federachse (17) gebogen ist.4. Spring core according to claim 1, characterized in that each attaches to the free end of the longer leg (12) a slightly arcuately curved piece of wire (28) which is bent slightly inwards towards the spring axis (17) and at its front free end Bends end (14), which is bent out of the plane (1,2) of the end turns (11,31) obliquely inwards towards the spring axis (17). 5. Federkern nach Anspruch 1, dadurch gekennzeichnet , daß jede Endwindung (11,31) fünf Biegestellen (5-9) aufweist, von denen die erste Biegestelle (5) den Übergang der Schraubenwindung (15,16) in den kürzeren Schenkel (13) definiert; die zweite Biegestelle (6) den Übergang des kürzeren Schenkels (13) in den Basissteg (18); die dritte Biegestelle (7) den Übergang des Basisstegs (18) in den längeren Schenkel (12); die vierte Biegestelle (8) den Übergang des längeren Schenkels (12) in das abgebogene Drahtstück (28); und die fünfte Biegestelle (9) den Übergang des Drahtstücks (28) in das schräg abgebogene Knickende (14).5. Spring core according to claim 1, characterized in that each end turn (11,31) has five bending points (5-9), of which the first bending point (5) the transition of the screw turn (15,16) in the shorter leg (13th ) Are defined; the second bending point (6) the transition of the shorter leg (13) into the base web (18); the third bending point (7) the transition of the base web (18) into the longer leg (12); the fourth bending point (8) the transition of the longer leg (12) into the bent wire piece (28); and the fifth bending point (9) the transition of the wire piece (28) in the obliquely bent kink end (14). 6. Federkern nach Anspruch 1, dadurch gekennzeichnet , daß im Verbindungsbereich benachbarter, aneinander anliegender Endwindungen (11,11'; 31,31') von benachbarten Schraubenfedern (10,10') die schraubenförmige Verbindungsfeder (30) stets einen langen Schenkel (12) der einen Schraubenfeder (10) und einen kurzen Schenkel (13') der anderen Schraubenfeder (101) umfasst.6. Spring core according to claim 1, characterized in that in the connection area of adjacent, adjacent end turns (11,11 ';31,31') of adjacent coil springs (10,10 '), the helical connecting spring (30) always has a long leg (12th ) which comprises a coil spring (10) and a short leg (13 ') of the other coil spring (10 1 ). 7. Federkern nach Anspruch 6, dadurch gekennzeichnet , daß die Anzahl der Federwindungen (20-22) der schraubenförmigen Verbindungsfeder (30), welche einen langen Schenkel (12) umfassen, um eine Federwindung (20-22) größer ist als die Anzahl der Federwindungen (20-22) , welche einen kurzen Schenkel (13) umfassen.7. Spring core according to claim 6, characterized in that the number of spring turns (20-22) of the helical connecting spring (30) which comprise a long leg (12) by a spring turn (20-22) is greater than the number of Spring windings (20-22), which comprise a short leg (13).
EP84109738A 1983-09-20 1984-08-16 Spring core for a mattress Expired EP0139956B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84109738T ATE38318T1 (en) 1983-09-20 1984-08-16 SPRING CORE FOR A MATTRESS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3333846 1983-09-20
DE19833333846 DE3333846A1 (en) 1983-09-20 1983-09-20 SPRING CORE FOR A MATTRESS

Publications (3)

Publication Number Publication Date
EP0139956A2 true EP0139956A2 (en) 1985-05-08
EP0139956A3 EP0139956A3 (en) 1986-01-02
EP0139956B1 EP0139956B1 (en) 1988-11-02

Family

ID=6209516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109738A Expired EP0139956B1 (en) 1983-09-20 1984-08-16 Spring core for a mattress

Country Status (10)

Country Link
US (1) US4817924A (en)
EP (1) EP0139956B1 (en)
JP (1) JPS60111611A (en)
AT (1) ATE38318T1 (en)
AU (1) AU568877B2 (en)
CA (1) CA1230685A (en)
DE (2) DE3333846A1 (en)
ES (1) ES281530Y (en)
MX (1) MX161820A (en)
ZA (1) ZA847373B (en)

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KR100717543B1 (en) * 2006-03-14 2007-05-15 주식회사 에이스침대 Spring structure for mattress
US8720872B2 (en) * 2011-01-20 2014-05-13 Sealy Technology, Llc Innersprings with alternating coil spring orientations
EP2689695B1 (en) 2012-07-26 2016-06-08 L & P Swiss Holding AG Spring core
USD739162S1 (en) * 2012-08-22 2015-09-22 L&P Swiss Holding Ag Coil spring
US11076705B2 (en) 2014-05-30 2021-08-03 Sealy Technology, Llc Spring core with integrated cushioning layer
WO2017105454A1 (en) 2015-12-17 2017-06-22 Sealy Technology, Llc Coil-in-coil spring with variable loading response and mattresses including the same
DK3405073T3 (en) 2016-01-21 2021-06-07 Sealy Technology Llc Spiral-in-spiral springs with non-linear load conditions and mattresses containing the same
US10598242B2 (en) 2016-05-20 2020-03-24 Sealy Technology, Llc Coil springs with non-linear loading responses and mattresses including the same
CN111727002B (en) * 2018-02-09 2023-09-22 美达私人有限公司 Linear coil and innerspring system

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GB386251A (en) * 1932-07-20 1933-01-12 Wales Ltd Improvements in mattresses and the like
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US2017032A (en) * 1932-05-27 1935-10-08 Moore Co Cushion spring assembly
GB386251A (en) * 1932-07-20 1933-01-12 Wales Ltd Improvements in mattresses and the like
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GB2104620A (en) * 1981-08-28 1983-03-09 Spuehl Ag Helical spring for spring cores of mattresses and furniture

Also Published As

Publication number Publication date
AU3332884A (en) 1985-03-28
DE3474903D1 (en) 1988-12-08
JPH0233366B2 (en) 1990-07-26
ZA847373B (en) 1985-05-29
CA1230685A (en) 1987-12-22
AU568877B2 (en) 1988-01-14
JPS60111611A (en) 1985-06-18
EP0139956B1 (en) 1988-11-02
ES281530U (en) 1985-04-16
DE3333846A1 (en) 1985-04-04
US4817924A (en) 1989-04-04
ES281530Y (en) 1986-05-16
ATE38318T1 (en) 1988-11-15
MX161820A (en) 1990-12-28
EP0139956A3 (en) 1986-01-02

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