DE7711196U1 - SPRING MATTRESS - Google Patents

Description

kuhnen & wacker ^schneiiostr ** ^poat " ^{ch 17} ?

Telegr.PAWAMUC-FREISING dipl-inq. dipl.-inq. and DiPL-wiRTBCH.-iNQ. D-8050 FREISING / MONCHEf »

Helmut Nussbaumer 22 NU 0101 2 / si

Mattresses and upholstery KG 8386 Perastorf

07. h. 77

Innerspring mattress

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The invention relates to a spring mattress according to the
Preamble of claim 1.

Such innerspring mattresses are widely known. At \

such innerspring mattresses should be achieved that the I

stiffer reinforcement layer the overlying foam |

Layer of fabric before direct contact with the |

The spring core and the associated wear protects. White κ

terhin is to avoid that by feeling around with punctate \ loads such as sitting, the innerspring

(DT-GbmS 76 03 220). Furthermore, such a |

stiffer reinforcement layer the stability of the mattress j

improved (DT ~ GbmS 71 05 134).

When using such a stiff reinforcing layer, however, care must be taken that the total
The elasticity and body friendliness of the upholstery above the spring core is not lost.

can either be achieved by the padding overlying the stiffer reinforcing layer is made so thick that with a very rigid, for example metallic, reinforcement layer no Feeling through the hard layer takes place, or that the reinforcing layer itself is still comparatively is made elastic and the load on the springs of the spring core is only locally limited evenly. Excessive padding is undesirable, especially in the case of an intervertebral disc lying surface. so that a comparatively elastic, pliable reinforcement layer has to be used.

But if the reinforcement layer is not made so stiff that it is practically completely rigid Plate results in a very even load on the spring core, so occur especially with point loads, noticeable local areas such as when sitting on the mattress or when children jump on the mattress Bulges also on the only relatively stiffer reinforcing layer, which also deform the spring core and lead to relative movements between the reinforcement layer and the spring core. These relative movements have a comparatively rapid wear of the reinforcement layer, so that the result Reinforcement or stiffening achieved initially is soon lost.

For this reason, high-quality mattresses need reinforcement layers arranged directly above the spring core Made of high quality material, such as steel mesh or the like., In spite of the at local

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Deformations unavoidable wear and tear of the spring core to ensure a long service life. It is obvious that such high-quality, pliable and yet wear-resistant materials for the Reinforcement layer increase the total cost of the mattress not insignificantly, so that for the result achieved a long service life a significantly higher price must be accepted.

In contrast, the object of the invention is to provide a spring mattress as outlined in the preamble of claim 1 To create a type which allows it to be made without the cost-effective use of expensive, highly wear-resistant materials, a long service life, even under heavy loads, when the lying surface is formed, in particular an intervertebral disc lying surface, without annoying pressure points and without excessive padding.

This object is achieved by the characterizing features of claim 1.

The fact that one over the softer foam layer Second, stiffer reinforcing layer is arranged, it is achieved that with point-like loads already the Load on the softer foam layer between the two stiffer reinforcement layers is evened out will. The upper reinforcement layer can become part of the softer foam layer in the event of a point-like load deform into it, which absorbs this deformation elastically and passes it on to the reinforcing layer underneath in a highly uniformized manner. As a result, the

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underlying reinforcement layer even with punctiform Load on the lying surface at most still very little deformations or bulges, so that there are also no relative movements between the spring core and the lower reinforcement layer. Through this in turn, the lower reinforcement layer is protected from the frictional wear and tear of the spring core and can be made from a cheap, from the material properties not in itself wear-resistant material are formed. Although in the area of the lower, The reinforcement layer resting against the innerspring is only slight and, in particular, locally no more pronounced deformations or bulges occur The entire lying surface can be deformed with sufficient elasticity and can also be used with strong point-like loads no counter pressure points are felt. Feeling through the spring core is excluded in that the innerspring is covered by the lower reinforcement layer resting on the innerspring, which despite one of the Material bulges only slightly because of its limited stiffness. A feel through of a rigid, plate-like cover of the spring core is ruled out by the fact that both reinforcement layers do not have such rigidity that they would be inherently non-deformable under the loads that occur; rather, they give in and generate therefore no local back pressure peaks. Overall, the lying surface is extremely comfortable because the The body is initially cushioned by the cushioning layer provided above the upper reinforcement layer takes place, the upper reinforcement layer yielding well overall in the case of locally increased loads and through the the rich foam layer underneath is softly supported

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will. With excessive load there is also the lower one Reinforcement layer after all, but with a locally narrowly limited bulging of the lower reinforcement layer is avoided by the extensive pressure distribution generated by the overlying layers. A sufficient hardness of the lying surface, which makes it suitable as an intervertebral disc lying surface, is thus by the interaction of the two reinforcement layers with the interposed softer foam layer achieved, but this hardness is not perceived as unpleasant, but is gradual.

US Pat. No. 2,543,218 discloses the use of two rigid reinforcement layers with an interposed one soft foam layer known per se. However, this is not a spring mattress, but rather a foam mattress. The two reinforcement layers are used as their own stiffening plates formed, which - as well as a single, for example central stiffening plate - from corresponding cavities in the mattress can be removed or pushed into this. This is the Mattress adjustable in hardness. The reinforcement layer is designed as a completely rigid board or the like. depending on its height in the cross section of the mattress, the effective thickness of the padding to the elastic Limited support of the contours of the body; if the reinforcement plate is inserted, the behavior with the The body put a load on the mattress as if the lower support was in the grate or the floor Provided the height of the stiffening plate. With point-like

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Loads, for example when sitting on the mattress the stiffening plate, if it is actually supposed to make the lying surface harder, clearly felt, there with such a point-like load on the practically completely rigid stiffening plate, its lower support, which is practically quite homogeneously loaded, hardly gives way and so the comparatively thin padding lying over the stiffening plate when sitting up to almost is compressed onto the stiffening plate. In this known foam mattress, there are thus essentially the same disadvantages as with a completely rigid cover of the spring core of a spring core mattress, in the case of high loads distributed over the entire area, however, the spring core yields imperceptibly at best and a disruptive hard one Support of the point-like load directly r-J: der rigid reinforcement layer takes place. Otherwise kick those related to abrasive movements between a reinforcement layer and one below it lying metallic spring core do not cause significant problems with such a foam mattress at all on.

From DT-GbmS 68 12 174 it is known to provide a stiffer reinforcement layer between an upper padding and a lower foam layer, which is not to be regarded as practically completely rigid, but rather stiff, but is quite deformable under the loads that occur. The relative The reinforcement layer, which is stiffer than the softer foam layer, serves to protect against the weight of the

/(Oil

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On the body resting on the mattress locally unevenly strong forces acting on the mattress on a to distribute a larger area and so avoid that only the soft padding in the case of local loads is practically completely pressed through to the hard surface, so that it can be felt. Also However, this is a foam mattress, with the stiffer reinforcement layer inside the Foam body provided between the lying surface and the support by a grate or a floor is. Thus, the reinforcement layer has a similar function in this non-generic mattress structure like the second, stiffer reinforcement layer in the invention, which is arranged above the softer foam layer, in both cases a reduction of pressure peaks and a distribution of the local pressure load larger area of the underlying layers is to be achieved, but lies below the softer foam layer in the known case a hard grate or a hard floor, in which wear relative movements as with a support on a spring core does not occur anyway. Thus it could look in a different context the DTGbms 68 12 174 known mattress design with embedded, deformable reinforcement layer at best serve as a model for mattresses with rigid lower support, the padding with rigid support plate a spring core or a plastic core to feel through the rigid support plate something

. Reduce; to solve the problem, as with an Fe

The core mattress with a deformable, stiffer and highly wear-resistant reinforcement layer above the spring core switched to cheaper materials for the reinforcement layer without impairing the service life can be, this well-known training can contribute nothing.

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The primary claims have further advantageous embodiments content of the invention.

Further details, features and advantages of the invention emerge from the following description of a graphically illustrated, according to the invention Mattress.

It shows

1 shows a mattress according to the invention with a cut open

nen upholstery layers above the spring core in a perspective view and

FIG. 2 shows the mattress in a representation according to FIG. 1 in a turned position from the other side.

In the manner shown in the drawing, a spring mattress designated as a whole by 1 has a spring core 2, which is surrounded by a cover 3, for example made of decorative quilted cotton ticking. The two In the example, sides of the mattresses have different designs, with one side being an intervertebral disc lying surface and the other side forms a normal lying surface. The normal lying surface has above of the spring core 2 in the example case a layer 4 made of jute felt, an overlying layer 5 made of soft foam with a horsehair pad 6. Between the horsehair pad 6 and the, for example, cross-quilted cotton ticking of the cover 3, a camel hair pad 7 can be provided, which against the horsehair pad ^ 6 by a horsehair impermeable layer 8 is separated, both

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for example a polypropylene fleece, as it is under the name "Corovin" in the trade. The jute felt layer 4 serves to cover the spring core 2 and to protect the soft foam layer 5 and can for example consist of stretched and undrawn polyester fibers which are sprayed on both sides with a starch binder and solidified. Such a cover has a comparatively low rigidity, but is good wear-resistant. ^{A foam with a density of 25 kg / m 3} , for example, can be used as the soft foam, so that this lying surface is very soft overall and makes full use of the elasticity of the spring core.

On the opposite side of the mattress 1 of the intervertebral disc lying surface, a harder support of the body lying on this side of the mattress is to be achieved without, however, impairing the comfort. For this purpose, a reinforcement layer 9 is initially provided as a cover on the spring core 2, as is known per se for intervertebral disc lying surfaces for stiffening the lying surface. This stiffer reinforcement layer, which is still deformable under the loads that occur, protects an overlying, softer foam layer 10 from direct contact with the springs of the spring core and thus from damage. The reinforcing layer 9 is, however, itself is not formed of highly wear resistant material, but may, for example of drawn and undrawn polyester fibers, the needled onto a polypropylene fabric having a basis weight of, for example 20 g / m ^a and foulatiert with an acrylate dispersion and solidified sind.wHierdurch arises a comparatively stiff layer with one

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Weight per unit area of a total of 600 g / m ^a , for example, which does not show any pronounced wear resistance, but is significantly stiffer than the foam layer above it. The foam layer can be used, for example, with a bulk density of 40 kg / m ³ . A further reinforcement layer 11 is provided above the foam layer 10, which can be formed in the same way as the reinforcement layer 9, with a further foam layer 12 being provided above the reinforcement layer 11, the structure of which can also correspond to the foam layer 10. A sheep's wool pad can be provided between the upper foam layer 12 and the cover 3 in a manner known per se.

In the event of a point-like load on this lying surface, the sheep's wool pad 13 and the upper foam layer 12 initially loads the upper reinforcement layer 11. The load acting on the upper reinforcing layer 11 is only marginally evened out by the soft sheep's wool pad 13 and the foam layer 12 and therefore still has an essentially point-like effect on the reinforcement layer 11. Due to the stiffness of the Reinforcement layer 11, which is located under the point-like Deformed load, that is, bulges downwards, however, a considerably more distributed initiation of this takes place point-like loading in the underlying foam layer 10. The foam layer 10 can, if necessary also be made a little stiffer than the overlying foam layer 12 in order to Transfer of the pressure load from the reinforcement layer 11 to the reinforcement layer serving as a spring core cover 9 an even more extensive comparative

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To achieve moderation of the load. A load then acts on the reinforcement layer 9, which on a considerable larger area is distributed than in the area of the cover 3 or the upper foam layer 12, so that load peaks are reduced. Therefore, the cover is also subject to strong point-like loads 3 on the intervertebral disc lying surface only soft, comparatively large-area bulges of the lower reinforcing layer 9, so that no noticeable relative movements this reinforcement layer 9 opposite the spring core occur more and thus without using a highly wear-resistant material for the reinforcement layer 9, whose long service life is ensured. Since the layers lying over the reinforcement layer 9 anyway with the wearing metal parts of the spring core do not come into contact, they are protected from wear and tear anyway.

However, the body is still comfortably supported, since with smaller loads the upper foam layer 12 and optionally the upper reinforcement layer 11 is slightly pressed in without any deformation on the lower reinforcing layer 9 takes place. However, the lower reinforcement layer 9 also experiences a significant change only under heavy loads softer deformation and the spring core 2 is also used to support local load peaks in the area of the cover 3 used, so that overall there is a uniform elastic support without pressure points, but still the characteristics of this »lying surface can be described as "tough" without being uncomfortable.

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Claims (7)

KÜHNEN AWAOKER T «i # Ör.PÄWAMUC« FRE | 8INa DIPMN «. DIPMNa1U1DIPL1-WIRTeOH1-INQ. D-8050 FREISINQ Helmut Nussbaumer ti NU 010-2. 2 / si mattresses and upholstery KG Perastorf - claims 1. Spring core mattress, in particular with an intervertebral disc lying surface, with at least one stiffer one underneath However, the stresses occurring deformable, the spring core covering reinforcement layer and a softer, overlying foam layer as well a cover overlapping the layers, characterized in that over the softer foam layer (10) a further, stiffer reinforcement 'layer (11) is arranged opposite which the cover (3) is padded. 2 spring core mattress according to claim 1, characterized in that that all layers essentially cover the entire mattress surface. 3 «spring mattress according to claim 1 or 2, characterized in that that for cushioning the further, stiffer reinforcing layer (11), a further, softer foam layer (12) is provided. 7711196 04.oa77 I. »T 'ι (ID · ■
• · O> »· I '· M I ¹ -2- 4 spring core mattress according to claim 3, characterized in that between the cover (3) and the further Foam layer (12) layers of body-friendly Fabrics, in particular a sheep's wool pad (13) and / or a camel hair pad, are provided. 5. Spring mattress according to one of claims 1 to 4, characterized in that the foam layers (10, 12) have a density ^{of about 40 kg / m 1.} 6. Spring mattress according to one of claims 1 to 5 _f, characterized in that plastic, in particular a solidified plastic fleece, is provided for the reinforcement layers (9 or 11). 7. Spring mattress according to one of claims 1 to 6, characterized in that the mattress on the Reinforcement layers (9, 11) facing away from the spring core (2) formed without reinforcement layers is. xxxxxxxxxx 7711196 08/04/77