EP0670128B1 - Under-mattress - Google Patents

Abstract

The under mattress has slats (3), for a single-bed width, which are divided lengthwise into two or more solid or ply wood, fibre-glass, plastics or metal part-pieces mounted at their ends on sprung bodies (4a,b). The sprung bodies are formed lengthwise of several elements preferably possessing differing degrees of hardness. The sprung bodies are made of foam rubber, foam, rubber or elastomeric material, in tubular form filled with water, gas or air. The sprung bodies (4b) on the outside of the bottom mattress are only half the width of those inbetween.

Description

The invention relates to mattresses with Slats placed transversely on spring bodies arranged in the longitudinal direction are stored.

There have been on the market for about 10 years a new kind of slatted frames, so-called "spring elements", which are characterized by being relative thin solid wood slats, which are so strongly self-resilient and / or cushioned that the associated mattresses can be made extremely thin. The difference to the well-known slatted frames moving, laterally arranged supports is, above all, that the suspension is regular across the entire width of the bed he follows. Due to the compared to usual slatted frames very small distances between the slats the mattresses are also softer than usual be, which makes the lying comfort very high.

The spring element systems described have because there has been considerable market success in recent years as well achieved. They are mostly called "natural beds" marketed.

a) Elemente mit starren Latten (im allgemeinen eine Schicht Lamellen), wie sie unter den Handelsnamen "Marmotli", "Artisana", und z.B. "Samina" verkauft werden. Die Federwirkung erfolgt fast ausschliesslich durch die Abstützung der Lamellen auf sogenannten Federkörpern.

b) Elemente mit flexiblen, dünneren Lamellen (immer zwei Schichten Lamellen), wie sie unter den Handelsnamen "Liforma", "Hüsler-Nest", "Relax" und z.B. "Pro natura" vertrieben werden. Die Federwirkung erfolgt zum grossen Teil durch die Biegsamkeit des Holzes und hängt von dessen Dicke und Festigkeit ab.

The spring elements described can be divided into two basic types:

a) Elements with rigid slats (generally a layer of slats), such as those sold under the trade names "Marmotli", "Artisana", and eg "Samina". The spring effect occurs almost exclusively through the support of the lamellae on so-called spring bodies.

b) Elements with flexible, thinner slats (always two layers of slats), as they are sold under the trade names "Liforma", "Hüsler-Nest", "Relax" and eg "Pro natura". The spring effect is largely due to the flexibility of the wood and depends on its thickness and strength.

a) Die Latten können sich parallel zur Lattenbreite verziehen. Dieser Verzug erfolgt nach dem Aufschneiden aus dem rohen Brett, weshalb sie anschliessend gefügt (nachbearbeitet) werden müssen. Dies bedeutet grösseren Holzverschnitt. Ein neuerlicher Verzug kann zudem bei der Benutzung auftreten. wodurch ein nur durch Austausch behebbarer Qualitätsmangel entsteht.

b) Zusätzlicher Verzug tritt auch - verstärkt durch Biegebelastung und Dampfdruck bei Benutzung - parallel zur Lattendicke auf. Hier kann der Benutzer durch Wenden der Latten Abhilfe schaffen, was jedoch, je nach Konstruktion des Federelementes, sehr aufwendig und daher unerwünscht ist.

c) Bei den Federelementen mit flexiblen Lamellen besteht eine Bruchgefahr derselben. Diese ist umso grösser, je dünner die Lamellen im Verhältnis zur Spannweite hergestellt werden müssen, damit die gewünschte Federwirkung erzielt wird. Es liegt daher auf der Hand, dass für die Lattenproduktion nur Holz verwendet werden kann, welches absolut fehlerfrei und gerade gewachsen ist und eine hohe Biegefestigkeit aufweist. Eine Verminderung der Bruchgefahr wird durch Lastverteilung mittels Vertikalverleimung erreicht (EP Anmeldung 0 549 526 A1). Diese Kostenverminderung wird durch die wesentlich höheren Produktionskosten wieder aufgehoben.

d) Bei den Federelementen mit starren, dickeren Latten ist die Bruchgefahr viel geringer. Gleichzeitig vermindert sich jedoch der erzielte Liegekomfort, da die Anpassung der Federlement-Oberfläche an den Körper nur noch in Längsrichtung erfolgt. Unbestrittenermassen sind die Federlement-Konstruktionen mit flexiblen Latten, welche eine zusätzliche Anpassung an den Körper in Querrichtung zum Bett gewährleisten, die für den Benutzer komfortabelsten Unterbetten.

These constructions have the following disadvantages:

a) The slats can warp parallel to the slat width. This warping occurs after being cut out of the raw board, which is why they must then be joined (reworked). This means larger wood waste. A new delay can also occur during use. which results in a lack of quality that can only be remedied by exchange.

b) Additional distortion also occurs - reinforced by bending stress and steam pressure during use - parallel to the slat thickness. The user can remedy this by turning the slats, which, however, depending on the design of the spring element, is very complex and therefore undesirable.

c) There is a risk of breakage of the spring elements with flexible slats. The thinner the slats in relation to the span, the greater this is, so that the desired spring effect is achieved. It is therefore obvious that only wood that is absolutely flawless and straight and has a high flexural strength can be used for slat production. The risk of breakage is reduced by distributing the load by means of vertical gluing (EP application 0 549 526 A1). This reduction in costs is offset by the much higher production costs.

d) The risk of breakage is much lower with spring elements with rigid, thicker slats. At the same time, however, the lying comfort achieved is reduced, since the adaptation of the spring element surface to the body only takes place in the longitudinal direction. Undisputed are the Federlement constructions with flexible slats, which ensure additional adaptation to the body in the transverse direction to the bed, the most comfortable underbeds for the user.

From EP-A-0 561 764 a sub-mattress is included known one-piece slats that cover the whole Extend bed width and on at least four longitudinal ones Support bodies are arranged. According to US-A-4 477 935 is proposed for a double bed Divide slats in the middle and on a middle one support longitudinal body. For one No subdivision is provided for single bed width, so that basically the disadvantages outlined above may occur.

DE-U-87 02588 relates to a bottom mattress without longitudinal spring body. To create a the one-time division 3 the slats suggested because the correspondingly shorter Battens supported on a central spar cause less deflection.

The object of the present invention is to create a simple base mattress that the described Distortion and breakage problems to a minimum limited, the slat manufacturing costs reduced and at the same time at least the lying comfort of spring element constructions with flexible slats.

This task is characterized by the Features of claim 1 solved.

This simple measure surprisingly shows many advantages:

On the one hand, the impact of the delay of Latten by reducing the ratio between Slat length and slat width significantly reduced. This The more divisions on the slats, the greater the advantage be provided. If you share e.g. a bar of 900 mm Length with a lateral distortion of 10 mm in three Parts, so is the remaining distortion of the now 300 mm long parts negligible small.

The number of divisions of the slats is in Dependence on the desired lying comfort and achievable Price set. Has proven to be the most economical solution for bed widths from 80 to 100 cm (single beds) one Trisection (= two break points) has been proven, whereby the length of the sections is preferably less than 36 cm. This is also anatomically advantageous because the the main bending points at the Divisions appear about 15 cm to the side of the spine.

The same effect occurs with regard to the risk of breakage on. This means that wood of the usual quality can be used become. In addition, there is less waste. That means in addition to the increase in quality, a significant reduction in costs.

Another significant cost reduction occurs with regard to the longitudinal waste. From a Piece of wood from e.g. 1.8 m length (= int. Standard length) can you only cut a batten 1000 mm long (= German Standard bed width). By means of the invention it is now possible, from the same piece of wood slats for 1 2/3 bed widths to cut. So you are no longer forced the purchase of wood exactly to the length requirements to coordinate what a big reduction in effort means. Add to that the choice of quality impeccable wood increases with decreasing length.

By reducing the risk of breakage it is it is even possible to glue the slats lengthways Finger jointing technology. This will make the Longitudinal waste reduced to practically zero. Also allowed this procedure high quality section timber in lengths below 50 cm (e.g. from stem production) to work up that partly is free of charge.

It has been shown that the required Slat thickness is rather smaller with the same wood quality than that of the described elements with resilient Slats. Contrary to these, however, is with the present Invention only one layer of slats to achieve the same lying comfort is required.

In preferred embodiments, the Slats e.g. also made of plywood, fiberglass, Plastics, metal etc. exist. Solid wood is due to its vapor diffusion ability that is still the case today best and most cost-effective suitable material.

The spring bodies arranged under the slats can include made of latex foam, foam, rubber hoses (filled with water, gas or air), steel springs or similar consist. They are generally on the side closings dimensioned for half load capacity. This creates an even distribution of the spring force over the entire surface of the base mattress. Preferably the spring bodies are multi-part in their longitudinal direction or built up in multiple layers, creating the spring bodies in a simple way a different in the longitudinal direction Hardness can be given, which makes the lying hardness accurate can be adjusted. The latex foam rubber can e.g. in different shore hardness in several or only one layer can be provided.

The spring body can on the slats divisions made in one piece or two pieces in width and then be connected to each other. A two-part Execution opens up another significant rationalization option. The spring elements can by this segment design is automated in larger series getting produced. With just 2 segments of, for example They can all be 20 and 25 cm wide normally occurring bed widths (80, 90, 95, 100, 120, 140, 150, 160, 180 and 200 cm) with a qualitative equip high quality under mattress. this happens by simply inserting the segments into an existing one Bed frame.

To save space during transport and storage the segments can simply be interleaved become.

The connection between the resilient support and the slat end can preferably be glued, but also by foaming, screwing, Inserting tabs, push buttons, etc. she becomes the material of the parts, the desired durability as well as the achievable price. A solution for a natural bed e.g. the use of Solid wood for the slats and natural latex foam for the spring body. For protection reasons, a fabric covering can be used be provided around the latex. Can do that Pockets for receiving the slat ends can be attached. The locking of the slats can e.g. through a sewn in Button reached in one on the slat ends snapped hole. But there are also other types of attachment, rigid and flexible possible. A pocket-like connection is preferably created in such a way that that first the slat ends with the spring body are glued to what is forming the pockets Tape glued over the slat ends and the spring body becomes.

The installation of the under mattress in the bed frame can by laying on a base plate or on in bed wooden beams arranged lengthways. The spring elements can also simply be placed on a flat surface (e.g. slab or floor). An attachment with the Contact surface is not required.

Fig. 1a und 1b eine konventionelle bzw. eine erfindungsgemässe, geteilte Latte mit gleichem Verzug im Vergleich,

Fig. 2 eine erfindungsgemässe Untermatratze mit Latten-Teilstücken und Federkörpern in stirnseitiger Ansicht,

Fig. 3 eine perspektivische Darstellung einer Untermatratze mit zwei Teilungen,

Fig. 4a und 4b zwei Latten-Teilstücke mittig aufgelegt,

Fig. 5 Latten-Teilstücke, die im mittleren Bereich auf Federkörpern aufliegen und deren Enden miteinander verbunden sind,

Fig. 6 Federkörper mit Stahlfedern, auf denen Latten-Teilstücke mit ihren Enden aufliegen,

Fig. 7 Federkörper mit Stoffhüllen und Taschen, in denen die Enden von Latten-Teilstücken stecken,

Fig. 8 Federkörper mit daran befestigten Gummiknöpfen, die in entsprechenden Ausnehmungen von Latten-Teilstücken aufgenommen sind,

Fig. 9 Latten-Teilstücke mit Bohrungen, in denen Befestigungsstifte stecken,

Fig. 10 die seitlich versetzte Anordnung von Latten-Teilstücken, und

Fig. 11 eine Untermatratze mit zwei Teilungen und mit unterschiedlicher Lattendichte in Längsrichtung.

The invention is described below with reference to some embodiments and in connection with the drawings. Show it:

1a and 1b, a conventional or a split slat according to the invention with the same delay in comparison,

2 shows a bottom mattress according to the invention with slat sections and spring bodies in a front view,

3 is a perspective view of a bottom mattress with two divisions,

4a and 4b two slat sections placed in the middle,

5 slat sections, which rest on spring bodies in the central region and whose ends are connected to one another,

6 spring body with steel springs on which slat sections rest with their ends,

7 spring body with fabric sleeves and pockets in which the ends of slats are stuck,

8 spring body with attached rubber buttons, which are received in corresponding recesses of slat sections,

9 slat sections with holes in which fastening pins are inserted,

Fig. 10 shows the laterally offset arrangement of slats sections, and

Fig. 11 is a bottom mattress with two divisions and with different slat density in the longitudinal direction.

A conventional slat can be seen in FIG. 1a 1 with a lateral distortion of approx. 1% of the length. As a comparison, the same lath in FIG. 1b is in accordance with the invention Execution with two divisions or Separations 2, i.e. depicted in three parts. One sees clearly that the deformation of the three individual parts 3 is negligible appears small.

2 shows an under mattress according to the invention in end view with slats 3, Divisions 2 and resilient supports or spring bodies 4a and 4b. The inner resilient supports 4a are made twice as wide as the outer ones 4b to ensure an even distribution of the supporting force achieve. This sub-mattress has four divisions 2 and thus five slats sections per row of slats.

3 is a perspective view a sub mattress with two divisions. The resilient supports 4a and 4b are used to guarantee the same total support force as in execution 2 either softer with the same dimensions, or narrower with the same hardness. Preferably point the spring body 4a, 4b in the longitudinal direction Sections of different hardness.

FIG. 4 shows two slat sections, placed in the middle in section, in Figure 4b on a rubber profile 11 with two-stage suspension, and in Fig. 4a a foam body 13, preferably made of natural latex foam, the one-piece or multi-layer can be built. The spring body can be used as individual pieces (per slat) or running lengthways they are each on a wooden side member shown on hook.

FIG. 5 shows flexibly connected on average Slat sections 3, which by means of vulcanized Rubber 15 are connected. These slat sections shown are not in their end areas, but in theirs middle areas supported by the spring bodies 13.

6 shows spring bodies made of steel springs 21 in average. The springs are on the side members below 23 mounted. On the top of the steel springs 21 are plates 25, which are connected by means of pins 27 to the Slat sections 3 are movably connected.

Figure 7 shows in section a side and a middle spring body 4b or 4a made of latex, each are surrounded by a fabric cover 31, which on of the upper edge have fabric pockets 33, in the slat sections 3 can be inserted. These are against each other slipping out secured with a groove 35, which in a sewn-on cotton cord on the latex cover snaps in.

FIG. 8 shows a top view of four slat sections, which are in pockets. The Securing against slipping out is done here by in pocketed rubber buttons 37, of which only one is shown in dashed lines over which the slat ends due to the special end design 38 (dashed Line). Otherwise corresponds to Construction of the description in Fig. 7. Preferably but the slat ends are glued to the spring body and secured with a tape stuck over it.

Figure 9 shows an embodiment of the invention in the top view. The spring bodies are out here Latex and surrounded by a fabric cover, as in Fig. 7 described. The bags, however, become smooth sewn on bias binding (seams = dashed Line). When the slats are pushed in, they expand now the bias tape towards the top. With this type of execution is achieved that firstly the spring body wrapping material no longer contracts in the longitudinal direction and secondly, a side edge is created, on which problem-free a wooden dowel (41) can be inserted. In addition sewing is easier and therefore cheaper. Of the pressed into holes in the side of the slats Wooden dowel 41 is simply through the bias tape pressed through and results in a firm, secure connection without additional necessary measures on the fabric. If the Slat sections 3 as in the preferred embodiment intended to consist of solid wood, you get a natural bed construction.

Figure 10 shows an embodiment in plan view of the invention, in which the slat sections 3 the middle spring bodies are arranged to overlap. This overlap has the consequence that the lateral stiffness the under mattress is increased. The greater the overlap A is, the more inflexible the connection between the slats sections. It can be used in the lying area zones of different stiffness are created, for example, a firmer support zone in the back area, or softer lowering zones in the shoulder and pelvic area.

Figure 11 shows schematically in a plan view a mixed version of the slat arrangements according to Figures 9 and 10. This embodiment has two advantages:

First, the bottom mattress at its end areas 42,43 stiffened, which enables better handling. Second, the type of arrangement in the end areas saved slats sections, but what has no influence on the lying comfort achieved.

Claims (14)

1. Box-mattress with battens resting in a transversal direction on elastic bodies (4a, 4b, 11, 13, 21) arranged lengthwise, characterised in that for the width of a single bed the battens are divided in three batten-pieces (3), and in particular in three or more batten-pieces shorter than 36 cm.
2. Box-mattress according to claim 1, characterised in that the batten-pieces (3) consist of solid or layered wood.
3. Box-mattress according to one of the preceding claims, characterised in that the batten-pieces (3) consist of or contain glass fibres, plastic or metal.
4. Box-mattress according to one of the preceding claims, characterised in that lengthwise the elastic bodies consist of several elastic elements which preferably have different resiliencies.
5. Box-mattress according to one of the preceding claims, characterised in that the elastic bodies (4a, 4b, 13) consist of natural latex foam rubber, or of a foamed material, or of rubber, or of an elastomer.
6. Box-mattress according to one of claims 1 to 4, characterised in that the elastic bodies (4a, 4b) consist of hoses which can be filled with water, gas or air.
7. Box-mattress according to one of claims 1 to 4, characterised in that the elastic bodies (4a, 4b) consist of rows of springs (21) made of steel or of a similar material.
8. Box-mattress according to one of the preceding claims, characterised in that the extremities of the batten-pieces (3) are supported by the elastic bodies (4a, 4b).
9. Box-mattress according to one of the preceding claims, characterised in that the elastic bodies (4b) situated on the outer sides of the box-mattress have a width that is only half that of the elastic bodies (4a) placed between them, and that the inner elastic bodies (4a) simultaneously support two extremities of mutually aligned batten-pieces (3).
10. Box-mattress according to one of the preceding claims, characterised in that the rows of battens are more distant from each other near the extremities (43, 44) of the box-mattress than in its other regions.
11. Box-mattress according to one of the preceding claims, characterised in that pockets (33) are attached on the elastic bodies (4a, 4b), and that the extremities of the batten-pieces (3) are inserted in these pockets.
12. Box-mattress according to one of claims 1 to 10, characterised in that the extremities of the battens are glued on the elastic bodies, and that a strap is glued over the extremities of the battens and over the elastic body.
13. Box-mattress according to one of the preceding claims, characterised in that the batten-pieces are arranged side by side on the inner elastic bodies.
14. Box-mattress according to one of the preceding claims, characterised in that at least some of the elastic bodies are composed of two elastic bodies joined together and which are in particular held together by Velcro or a zip-fastener.

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