EP1056371B1 - Bedstead - Google Patents

Abstract

A lounge chair with a frame having longitudinal and transverse bars and with spring elements held by the frame. The spring elements being in the form of an elastic textile structure held under prestress between the longitudinal bars and forming a supporting surface covering the frame. The textile structure is made out of synthetic threads. A first prestress of the textile structure at a right angle to the longitudinal bars in a first section is different from a second prestress of the textile structure at a right angle to the longitudinal bars in a second section.

Description

The invention relates to a bed with a frame and resilient elements held by the frame, one the frame filling surface for mattresses or the like form.

EP 0 734 666 A1 and DE-U-9 101 997 describe the contact surface for a cushion of such a bed known in the frame a plate-shaped base is held on which in a regular grid arranged spring elements with their feet are set. The spring elements have heads, the support plates form for a continuous cushion or the like. Such contact surfaces, which are also used for beds can be used instead of the much more widespread Beds with a slatted frame (DE 29 707 790 U1) are provided in which a transverse to the longitudinal spars Resilient slats running under the frame as a base for one Mattress or the like are provided.

It is also known for folding loungers or deckchairs (DE-GM 7531803), a textile covering between the longitudinal and transverse bars of a foldable bed frame, that the edges of the textile structure around the longitudinal and transverse bars folded and fastened there. This leads to, that recesses must be provided on the joints to not to impair the joint function. Such couches cannot be used as basic frames for beds.

This also applies to deckchairs, which can be folded into beds can be remodeled (CH-PS 380 901), where the textile covering with the help of attached at the head and foot end Pulls bags over the snap frame and so the attachment of the textile structure. It is also known there widenings with reinforcing inserts at the joints to be provided with the help of which the joint points are covered can be. Can replace a bed frame but also such reclining furniture cannot be used. That applies also for a bed intended as garden or camping furniture (AT-PS 312 844), which consists of a collapsible frame is built, which serves as a holder for elastic straps, towards the center of the reclining furniture in a textile structure pass. This design is intended to serve the reclining furniture also available as a kind of trampoline for children.

Finally, chairs or deck chairs are also known (DE 44 26 316 C1), in which the seat or the back surface a textile cover is formed, each on its edges is formed into a loop and with this on rod-like Clamping is pushed on, which in turn with Longitudinal bars of the chair frame are screwed. This configuration makes it possible to reference the purpose for example can be removed from the rack during cleaning.

The present invention is based on the object Lounger bed of the type mentioned, that is as a bed frame can serve to design in a much simpler way that resilient contact forces over the entire lying area can be made available without being expensive Spring elements distributed on the surface in a manner solid base or across the longitudinal spars of the frame running slats must be provided.

To solve this problem, the invention with one Bed of the type mentioned suggested that the resilient elements of one formed from elastic threads textile structure in the form of a made from plastic threads Knitted or woven fabric are formed under Preload is clamped at least on the longitudinal bars of the frame is held and that the pretension of the textile structure (4) transversely to the Longitudinal spar sections (14 - 18) different to which is in other sections.

This configuration creates a contact surface for the Cushion pad of a bed or the like, depending on Preloading of the textile structure, resilient restoring forces can apply, which can be influenced to the desired extent. The structure of such a support frame remains extreme simple.

In a development of the invention, the bias of the textile structure transverse to the longitudinal spars in at least one of several sections running in the longitudinal direction of the longitudinal spars be different from that in other sections so that it, as usual with slatted frames or with individual adapted spring elements is possible, different zones Restoring forces on a cushion and thus also to exercise on a person lying on the cushion. This is an important measure for modern bed pads, that promotes lying comfort and thus healthy sleep. The outer edges of the textile structure can be very be held in a simple manner on the longitudinal and transverse bars, the frame also provided with foldable longitudinal bars can be, which allow an adjustment of the lying surface.

In a particularly advantageous development of the invention the knitted fabric of the textile structure made of polyester threads, preferably about 25% elastomeric Polyester.

The textile structure can advantageously also consist of two at a distance there are textile structures arranged one below the other, that come into contact with each other when loaded and so allow to realize high restoring forces.

The invention also relates to a method for producing a Lying bed of the type mentioned at the beginning. With this method is first a blank to be inserted into the frame made of the textile structure formed by the threads, whose transverse dimensions are smaller than the distance the longitudinal spars and its outer contour at least on one Do not place one of the long sides straight and parallel to the Longitudinal spar is. The blank thus formed is stretched at least in the transverse direction with its longitudinal outer edges attached to the longitudinal spars. Because the outer contour of the blank the outer edges are not parallel to the longitudinal spars but are pulled up to the longitudinal spars before they are attached there will result in different zones of the so formed Contact surface a different preload of the Fabric, so that thereby also those exerted by the contact surface Restoring forces at least in the longitudinal direction of the Longitudinal bars can be divided into different zones. In this way it is possible to determine the size of the spring forces, who respond to a load, the spring properties better known Adjust slatted frames or the like in which also different contact forces on a bed cushion and thus also exercised on a person lying on it can be.

Of course it is also possible to preload the elastic Fabric or knitted structure in zones that run lengthways the cross bars lie to change accordingly, so that in this way relatively simple and without individual spring elements must be distributed on a support surface, Zones of larger and smaller restoring forces for the contact surface can be realized.

Fig. 1

eine perspektivische Darstellung eines Liegebettes nach der Erfindung mit unterschiedlich ausgerichteten Abschnitten der Liegefläche,

Fig. 2

eine Seitenansicht des Liegebettes der Fig. 1, jedoch mit einer Polsterauflage und mit der Darstellung der in eine gemeinsame horizontale Ebene abgeklappten Liegeflächenabschnitte,

Fig. 3

die Stirnansicht des Liegebettes der Fig. 2 mit in der abgeklappten Stellung befindlichen Liegeflächenabschnitten,

Fig. 4

den Schnitt durch das Liegebett der Fig. 2 längs der Linie IV,

Fig. 5

eine schematische Darstellung eines Gewebezuschnittes, der anschließend in den Liegebettrahmen eingespannt wird,

Fig. 6

eine vergrößerte Teildarstellung der Einzelheit VI der Fig. 4,

Fig. 7

eine Teildarstellung ähnlich Fig. 6, jedoch in einer anderen Ausführungsform und

Fig. 8

eine Teildarstellung ähnlich Fig. 6, jedoch in einer weiteren Ausführungsform.

The invention is illustrated in the drawing using an exemplary embodiment and is explained below. Show it:

Fig. 1

2 shows a perspective illustration of a bed according to the invention with differently oriented sections of the bed,

Fig. 2

2 shows a side view of the bed of FIG. 1, but with a cushion pad and with the representation of the lying surface sections folded down into a common horizontal plane,

Fig. 3

2 with the lying surface sections in the folded-down position,

Fig. 4

the section through the bed of Fig. 2 along the line IV,

Fig. 5

1 shows a schematic representation of a fabric blank which is then clamped into the bed frame,

Fig. 6

3 shows an enlarged partial view of detail VI of FIG. 4,

Fig. 7

a partial view similar to FIG. 6, but in another embodiment and

Fig. 8

a partial view similar to FIG. 6, but in a further embodiment.

In Figures 1 and 2, a bed is shown, which consists of a with base 1 provided base frame 2 with longitudinal spars 2a and crossbars 13 and from a bed surface Frame 3, which in the embodiment with a elastic knitted fabric 4 is covered. The frame 3 exists thereby from two kinkbar longitudinal bars 5, which by Cross bars 6 are kept at a distance. The bendable Longitudinal bars 5 enable, in a manner known per se, to divide the bed surface into several sections, which are inclined towards each other at certain angles can, as shown in Figures 1 and 2. The Longitudinal bars 5 can also be in an extended position bring so that the bed has a flat lying surface, such as which is shown in dashed lines in Fig. 2. The adjustment the longitudinal spar also takes place in the embodiment in known manner via an electric drive 7, which is in Fig. 2nd is shown in dashed lines. 2 is the lying surface the bed with an elastic pad 8, whose extended position is indicated by 8 'in Fig. 2.

The knitted fabric 4 clamped in the frame 3 consists of elastic Plastic threads, where appropriate a knitted fabric Polyester threads with a share of approx. 25% elastomeric polyester is used. This well-known knitted fabric, the from the company under the brand name "Gemstone Crystal Flex II" Milliken Europe N.V. is distributed in Ghent / Belgium an elastic knitted fabric that can be stretched bidirectionally can and according to the invention at least in the transverse direction between the two longitudinal spars 5 in the prestressed state in the support frame 3 is used. How that happens is still be explained in detail with reference to Figures 5 and 6.

Figures 3 and 4 show, however, that the longitudinal spars 5 except through the two cross bars provided at their ends 6 also in the area of their two joint axes 9 and 10 are provided with additional cross struts. So is in the area of the hinge axis 9, which is just like the hinge axis 10 not from a continuous wave or the like is formed, but only in the area of the longitudinal spars 5 is formed with joint arrangements, a linkage on Base frame 2 provided while in the area of the hinge axis 10 an additional cross stiffening bracket 12 is provided. In this way, a stable support frame 3 is formed the elastic knitted fabric 4 used under a predetermined Can hold tension.

This elastic knitted fabric is now inserted into the frame 3, that it is in the transverse direction between the two longitudinal bars 5 with zones 14, 15, 16, 17 and 18 different Preload is used in frame 3.

This is achieved in that the elastic knitted fabric 4, such as is indicated schematically in Fig. 5, before insertion in the frame 3, which is rectangular, with a rectangular shape deviating cutting contour is provided, the outer edges 4a run in a curve and, as can be seen from FIG. 5 is wider in zone 15 and in zone 17 is considered in zones 14, 16 and 18. Are now in accordance with the invention, the outer edges 4a of this elastic knitted fabric 4 in the sense of arrows 21 pulled out to the Longitudinal bars 5, arises because of the greater stretching between the longitudinal spars 5 in zones 14, 16 and 18 a larger one Preload than in the intermediate zones so that it this enables the bed's lying surface in different Zones distributed over the length of the longitudinal spars, to give a different restoring force what is desired Way serves a differently soft contact surface to offer for a person using the bed.

Fig. 5 also makes it clear that the knitted fabric 4 is also subjected to a pretension in zones 15 or 17, because here it must be stretched outwards at least by the amount s to the respective longitudinal spars before it is applied to the Longitudinal spars is clamped. In zones 15 and 17, restoring forces would therefore arise in the exemplary embodiment shown, which is due to the stretching of the knitted fabric 4 by the amount s, but in zones 16, 14 and 18, however, restoring forces would arise, each due to the stretching of the knitted fabric by the amount s plus s _{x is} caused.

Fig. 6 shows that the initially non-rectangular blank of the knitted fabric 4 (Fig. 5) after passing through the corresponding Elongation has been brought into rectangular shape with the outer edges 4a inserted and held in terminal strips 19 is, which in turn is used in the receiving strips 20 be attached to the longitudinal spars 5. The this way different in different zones stretched fabric 4 is then held on the frame 3 and can as explained, form a lying surface that varies under load looks soft.

1 and 4 also make it clear that in addition to the tension of the knitted fabric underneath it supports can still be provided, which are made in the longitudinal direction the longitudinal spars 5 slidable strips 24 with on it arranged supports 22 can exist and in addition the support for the upholstery and for one person support certain positions. Of course it would be possible also to put 4 pads on the knitted fabric, for example as lumbar supports in the lumbar region or as Knee supports in the support area of the legs of the bed the person using it. These additional requirements can e.g. with a Velcro on the knitted fabric 4 appropriate place.

7 shows a modified embodiment of a clamping the textile structure on the side rails 5. Here is how to clamp the edge of the textile structure a terminal block 19 'is provided, which consists of the three strip sections 19a, 19b and 19c. Between each these three strips is the edge of a textile structure 4a and the edge of a textile structure 4b clamped, whereby the two textile structures made of elastic threads 4a and 4b run parallel to each other at a distance a in practice, on the order of 3 to 5 cm can be. The lower textile structure 4b is in the generally somewhat tighter than the upper structure 4a, and it can of course, as previously with reference to FIG. 5 in individual has been explained, here also a different one Tension realized over the length of the longitudinal spars 5 become. When the mattress 8 is loaded, the upper one bends textile structure 4a through and if this deflection is greater than the distance is a, then comes the top textile structure 4a for contact with the lower 4b. This measure will from this point on a much higher holding and Restoring force exerted. The embodiment according to FIG. 7 allows therefore an adjustment of the elasticity over a wide range Load area so that people with low body weight, but also those with larger body weight comfortably can lie on the bed frame thus formed.

8 shows a variant of the configuration with two among one another arranged textile structures 4a 'and 4b'. These two structures are in the embodiment of the Fig. 8 part of a hose 4 ', the lateral rods 27 is pushed, which in turn in not shown Way fixed or rotatable in the sense of arrows 26 on strips 25 are mounted, which are fixed to the longitudinal spars 5 or are connected to the receiving strips 20 of the same. At this Design is caused by the load on the upper run of the hose 4 ', which is formed by the structure 4a', the lower run, i.e. thus the textile structure 4b ', in addition excited so that even in this case additional forces can be recorded if there is an upper and lower run of the hose 4 'touch each other.

So far it has only been explained that and in what way and way the elastic knitted fabric 4 transversely between the longitudinal spars 5 is braced. It is of course also possible to get one different tension in the direction of the longitudinal spars between to provide the cross bars 6, if this is desired. Here However, difficulties can arise at the joint axes 9, 10 occur where, as Fig. 1 shows, transverse cover strips 23 are placed on the knitted fabric 4, each protect the crease edge of the knitted fabric 4.

Claims (14)

1. Lounger with a frame (3) and with spring elements supported by the frame in the form of an elastic textile structure held under pre-tension between longitudinal bars which form a bearing surface filling out the frame for mattresses, cushion coverings or similar, characterised in that the textile structure is a fabric or tissue manufactured from synthetic material threads and that the pre-tension of the textile structure (4) at least crosswise to the longitudinal bars (5) in at least one of several sections (14 to 18) running in the lengthwise direction of the longitudinal bars is different to that in other sections.
2. Lounger according to claim 1 characterised in that the outer edges (4a) of the textile structure (4) are held under pre-tension on the longitudinal bars (5) and on the cross bars (6).
3. Lounger according to claim 1 characterised in that supports (22) are provided below the textile structure.
4. Lounger according to claim 3 characterised in that the supports (22) are arranged on strips (24) which can be displaced in the direction of the longitudinal bars.
5. Lounger according to one of the claims 1 to 4 characterised in that bearings in the form or lumbar supports or knee joint supports can be arranged on the textile structure.
6. Lounger according to one of the preceding claims characterised in that the longitudinal bars (5) are formed in a foldable way and form joint axes (9, 10) for the lounger surface.
7. Lounger according to claim 1 characterised in that the fabric or tissue is manufactured from polyester threads with a proportion of approximately 25% elastomer polyester.
8. Lounger according to claim 1 characterised in that the textile structure is constructed from two textile structures lying spaced apart under each other.
9. Lounger according to claim 8 characterised in that each of the textile structures is mounted with its edges on the longitudinal and cross bars.
10. Lounger according to claim 8 characterised in that the distance of the two textile structures is selected in such a way that at least part of the surfaces of the textile structures come to lie against each other upon loading.
11. Lounger according to claim 8 characterised in that the textile structure is formed as tubing pulled over rods.
12. Lounger according to claim 11 characterised in that the rods are mounted in a rotatable way and fixed to the longitudinal bars.
13. Method of manufacturing a lounger according to claim 1 characterised in that firstly a section of the textile structure (4) formed by the threads to be inserted into the frame (3) is manufactured, whose lateral dimensions are smaller than the distance of the longitudinal bars (5) and whose outer contour (4a) at least at one point of one of the longitudinal sides is not straight and parallel to the longitudinal bars (5) and that the thus formed section is fixed to the longitudinal bars (5) through rotation at least in lateral direction with its longitudinally running outer edges (4a).
14. Method according to claim 13 characterised in that the section of the textile structure (4) is also smaller in longitudinal direction than the distance of the cross bars (6) of the frame (3) and that the textile structure is also fixed through rotation in longitudinal direction to the cross bars (6).

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