EP3426103B1 - Cover for a mattress or a cushion, and mattress or cushion with such a cover - Google Patents

Description

The invention relates to a cover for a mattress or a cushion of a piece of furniture, with a useful side and a back, wherein on the back of a receiving device for a spring strips having spring base is provided, wherein the spring strips of a fiber-reinforced plastic material with a preferably pultruded fiber core and a Fiber core enclosing plastic sheath are formed. Furthermore, the invention relates to a mattress or a cushion for a seat part or a backrest of a piece of furniture, in particular upholstered furniture, with a reference of the aforementioned type. Finally, the invention relates to a piece of furniture with a mattress or a cushion of the aforementioned type.

The so-called upholstery structure of a piece of furniture, in particular upholstered furniture, describes the individual layers and the materials used, which are used in the upholstery of upholstered furniture, in particular sitting and lying furniture. The most common materials are foam, spring core, spring insert, padding and insulating felt. The lower end of the upholstery structure forms the so-called spring base, which carries the aforementioned materials.

Conventional upholstered furniture supports, also referred to as underfloor or upholstery bases, are rubber belts that are relatively soft, wave springs that have medium hardness, and textile belts or wood spring rails that are considered hard. Wooden spring strips correspond to the slatted frame of beds. Basically, as a carrier and a simple wooden plate, which consists mostly of hard fiber material to name, which allows the lowest sinking depth, since it does not yield.

In the choice of upholstery, among other things, the subsequent easing of the upholstery plays a role. A soft seat, which allows a deep sitting, usually never has a wooden spring strip as a base, but as a cushion upper padding and as a base suspension usually rubber straps and stretched over long distances wave springs. Furthermore, pocket springs that can be used above the padding base are also used. The pocket springs can also replace a part of the plastic of the upper upholstery. Pocket springs are used in particular for seating furniture and mattresses.

A firm padding, however, usually has a spring insert on a foam block as an upper cushion and as a spring suspension over short distance stretched wave springs, textile straps, wooden spring strips or a wooden plate. Here is the sinking then correspondingly low.

The most commonly used spring-loaded upholstery is the (steel) wave spring, also known as the Nosag spring. Wave springs serve as a springy surface for both flat upholstery and high upholstery with spring core. They are used as a spring suspension of seats and also in backrest upholstery. Wave springs are usually produced in roll form as a ring with a total length of about 30 m. While the width of the wave spring is always consistent and need not be taken into account, the degree of wire thickness, which influences the hardness or softness of the later padding, always has to be considered. Thin wire sizes (for example, about 2.8 mm) are used exclusively for back padding. Seat upholstery requires a base with stronger wave springs with about 3.6 or 4.0 mm wire thickness.

For installation in furniture is the first step, the number of required wave springs that run side by side from the front to the rear frame set. The distances between the springs are usually between 70 mm and 135 mm. On this basis, four wave springs are needed for a frame of 40 cm width. This distance describes the distance from the center of the spring to the center of the next spring, not the actual gap from spring to spring.

The next step is to measure the required length of the wave springs. This is easiest to accomplish with a so-called folding rule, as the springs should take a slightly curved course and a folding rule can be created with a gentle arc of the rear and front frame. The determined measure is cut off from the wave spring ring in appropriate quantities by means of a bolt cutter. Since the severed sheets always show in the direction of the wave spring due to the continuous production of the product, these ends must be bent with a special bending device so that the outer end curves facing inward, ie in the direction of the subsequent padding reason. This is necessary because otherwise the springs can slip out of their holders (clips) under heavy load. The wave springs are first attached to the rear frame of the frame. These are plastic or metal clips, Also called hinges, stapled at the appropriate positions or fastened in the classic way with large pin straps and / or harpoon nails.

From the prior art different clips or clips strands with multiple clips with fixed distances are known. Some variants are simple or double tacked, others are tacked on once, then the spring is hooked into the clip, the top of the clip bent out and closed with two other staple clips.

After the individual hinges are struck at the correct positions on the front frame, the wave springs can be hung with high tension. There are various tools and special tools for this exhausting work. Traditionally, a tear-resistant loop is used in the prior art, which is threaded into the front bow of the spring. Subsequently, this is sufficiently elongated over the loop of the spring, so they can hook into their clip on the front frame. In this way, then all wave springs are hung. It may be necessary for a second person to hold the upholstery frame to the floor during this operation, as light racks may slip and tilt under the extreme tensile load until a spring is suspended.

Wave springs are ideally always in pairs symmetrically next to each other. In the case of two adjacent springs, the closed and open bends lie directly opposite each other. This allows the final connection of the various springs with sturdy rubber rings or with a multiple transverse constriction of the wave springs with threads, so that a non-uniform rather punctual load of the subsequent cushion on the cushion base distributed over a larger area. For the Durchschnürung a sufficiently long Schnürfaden is attached to a side frame and out to the opposite frame, each spring is knotted and the thread end is fixed on the opposite side.

This is followed by a cover of the wave spring base with heavy tension lines or spring lines. This will be tailored and over-stitched. But since not all upholstered furniture is closed on its underside with tension fabric and a look under the finished furniture should provide a clean working image, the linen is hit in the subsequent striking upwards. Should front and rear cleats be in the way of covering with spring lines the lines are simply cut in Y-shape before hitting these corners.

Overall, the attachment of a suspension with wave springs in furniture is very expensive. But also the attachment of Pullmaflex mats or pocket spring cores in upholstered furniture and mattresses is often problematic.

Webbings or upholstery straps basically serve as cushioning support for seat and backrest upholstery, but are predominantly used in backrests, since they tend to be more elastic than the wave springs described above. Belts are also used for extravagantly shaped elements with radii that are poorly supportable with wave springs, or for upholstered furniture where very casual seating comfort is desired.

Belts are made of different materials with different elasticity. For the construction of the padding in the classic upholstery and spring inners, flat and foam padding inelastic textile straps, which usually consist of hemp or jute, are usually used. For the construction of elastic back and seat upholstery used mostly woven rubber or solid rubber belts in bandwidths between 30 and 80 mm, up to 150 mm and with different extensibility. For the back area usually very elastic rubber bands and less stretchable straps are used for the seating area.

Even with the use of upholstery straps, belt widths and elasticities must first be calculated and then measured and marked for each seat. The attachment of the upholstery straps on the base frame of the furniture then takes place as Gurtgrund (less elastic), Gummigurtband (elastic) or rubber fabric (for closed upholstery). The upholstery straps are not simply attached side by side, but woven horizontally and vertically to a Gurtgrund. They are stretched crosswise and fastened with a tacker or special belt nails (belt pins). As an aid in the power-intensive manual tension and attachment are used for example belt tensioner. These have steel tips on the upper edge, which are struck by the belt during the tensioning process. At the other end of the tool is a non-slip pad, which attaches to the frame of the wooden frame. Thus, the degree of tension can be estimated and the belts are fastened with as uniform a tension as possible.

The attachment of upholstery straps turns out to be relatively expensive in practice.

Furthermore, wooden spring strips are used as a base, but usually only for furniture with long surfaces, especially beds and upholstered furniture with integrated bed function. The individual wooden spring strips are arranged parallel to each other and at a distance from each other and either held on a frame or, as a rule, connected to one another via two fabric straps extending transversely to the spring strips. About the frame or the fabric straps the distance and the relative arrangement of the individual spring strips is ensured to each other. This construction with an outer frame is comparatively complicated and takes up a relatively large amount of space, which makes storage and transport more difficult. However, it is also known to hold the wooden spring strips on straps. This results in a very simple construction and, incidentally, such a padding ground can also be rolled up. However, the aforementioned upholstery basic construction with the transversely to the wooden spring strips running belts has the disadvantage that in this case permanently a defined position of the individual wooden spring strips can hardly reach each other in the installed state.

In the aforementioned padding basic construction, the spring strips are usually made of wood. In order to achieve a high load capacity, the wooden spring strips must have a pre-curvature towards the middle. For different widths of the padding reason this leads to the fact that different lengths and thus differently curved wooden spring strips must be kept.

Incidentally, a pad saver is usually arranged on a padding base of the aforementioned type as an intermediate layer between the pad (padding) and the padding ground. This overlay saver is usually used to protect the underside of the edition.

From the DE 1 253 877 B is a reference of a mattress of the type mentioned above, wherein the rear side a receiving device for a spring strips having spring base is provided. The spring strips are designed as steel or glass fiber rods, which are surrounded by a corrosion-resistant and noise-resistant envelope made of plastic or rubber. In the known reference, it is such that a plurality of pockets are provided, wherein in a pocket one or more rods can be accommodated. Also, individual pockets without the storage of rods remain free. By removing or Relocating rods to the suspension comfort of the known mattress can be adjusted according to the respective requirements. However, it is in the known mattress so that the spring strips used there made of steel or glass fibers have a comparatively high stiffness even at low diameter. This has the consequence that the distance between adjacent spring strips must be chosen comparatively large, in order not to achieve a high rigidity. Due to the comparatively large distance between adjacent spring strips, however, the bearing surface for the actual mattress body is comparatively small. In places where no slats is provided, the mattress body sagged under load comparatively deep, which affects the sitting and lying comfort of the mattress.

From the DE 42 02 317 A1 goes out a reference in which wood slats, plastic slats or metal slats are provided as slats.

The EP 1 512 348 B1 shows a mattress with a cover having on its underside pockets for receiving slatted frame elements. These elements consist of a solid material.

The CH 698 053 A5 relates to a lying or seat pad having a cover, which also has on its rear side a receiving device for consisting of a solid material slats as slats of a spring base.

The DE 10 2012 022 291 A1 concerns a mattress with integrated slatted frame. The formation of the slats of the slatted base is not described in detail in this document.

The object of the invention is therefore to provide a reference of the aforementioned type, in which the spring base has as simple and inexpensive as possible produced female connectors and offers good suspension comfort.

According to the invention, in a reference of the aforementioned type, which may be both a mattress cover and a cushion cover, it is provided that in each case a jacket leg projects on opposite sides of the jacket for an enlarged contact surface of the spring strips. The mattress according to the invention or the pad according to the invention as part of a piece of furniture accordingly have a relation of the type according to the invention with a spring base on. Incidentally, it should be noted that the mattress is intended in particular for a bed or a sofa bed and that such a bed or sofa bed is ultimately in the same way to be regarded as furniture or upholstered furniture as a chair, a sofa or the like.

Of particular advantage in terms of good suspension comfort and simple and inexpensive manufactured spring strips is that the spring strips are made of a fiber-reinforced plastic material. The preferably pultruded fiber core, in particular fiberglass core or fiberglass core, ie glass fiber reinforced plastic core, is enclosed by a thermoplastic matrix. The fiber core serves as a reinforcing element and significantly defines the elasticity of the spring strips. It can be designed as a hollow tube or as a filled strand. Depending on the required elasticity, it has a larger or smaller diameter. The elasticity can also be influenced by the cross-sectional shape. The shape of the fiber core is not limited to round or elliptical cross sections. Also angular, in particular rectangular cross sections are possible. Due to the fiber core and the surrounding surrounding the fiber core shell relatively thin, but still very viable slats can be provided that, unlike slats made of wood, are straight and not pre-curved. The rectilinear and not pre-curved spring strips ultimately facilitate the insertion of the spring strips in the pockets of the receiving device.

According to the invention, it is further provided that from the jacket of the spring strip, which surrounds the fiber core, a jacket leg projects laterally on opposite sides. In this case, preferably, the width of the jacket leg is greater than the diameter of the fiber core, in particular by at least 1.5 times, more preferably by at least 2 times, and in particular by 2.4 to 3.0 times the Diameter of the fiber core. Incidentally, it is preferably provided in this connection that the maximum thickness of the jacket leg is smaller than the diameter of the fiber core, preferably at least 2 times, more preferably at least 3 times, and especially 4 to 8 times that Diameter of the fiber core. As a result, this results in a thickened central region with fiber core and cladding region seen in cross-section, followed laterally on opposite sides by a sheath leg of lesser thickness. However, the sheath does not necessarily have to be thicker than the sheath legs. In principle, the jacket and the jacket legs can also have the same thickness.

Structurally, a corresponding receiving device for the arrangement, mounting and / or attachment of the spring base is provided on the rear side of the cover with regard to the reference. If the reference is applied to a corresponding core of the mattress or the upholstery, the mattress or the upholstery is jointly handled together with the lower suspension. As a result, the construction of a piece of furniture with a mattress according to the invention or a cushion according to the invention is considerably simplified. In particular, in the embodiment according to the invention, it is no longer necessary to mount or fix the spring base to the furniture itself. Although it lacks due to the integration of the spring base in the reference to an immediate attachment to the furniture, nevertheless results in a very defined position of the spring base to the mattress or upholstery.

Another advantage results in the embodiment of the invention in the end user in that after removal of a mattress or a cushion from the furniture body of the furniture, the floor below the furniture is directly accessible, which is not the case in the prior art, since there after removal the mattress or the upholstery of the furniture body is usually still the spring base. Thus, in the prior art, the floor below the mattress or upholstery is generally not easily accessible and can be difficult to clean.

In principle, it is possible to provide the receiving device for the lower suspension at the inner side of the rear side of the cover facing the core of the mattress or the upholstery. However, it is preferred that the receiving device is provided on the outside of the back of the cover. In this way, after the cover on the back of the mattress or the pad, the lower spring in the receiving device can be used in a simple manner and, if necessary, remove again, if this is necessary, for example, to clean the cover. The arrangement or attachment of the spring base on the mattress or the pad is thus independent of the actual production of the cover and also the mattress or the pad.

Preferably, the receiving device is designed as a pocket arrangement which has a plurality of pockets for the arrangement of the spring strips. Preferably, a pocket per female connector is provided, wherein the pockets preferably each have the same distance from each other. The result is ultimately so formed on the back of the cover for the mattress or the pad a lower spring in the form of a slatted frame with a plurality of particular mutually parallel slats. By having the pockets having pocket arrangement ensures that there is a defined and secure arrangement of the individual spring strips, not only within the bag assembly, but also with regard to the arrangement of the spring strips to the mattress or pad. The spring strips must be used only in the designated pockets. If the individual pockets from the cross section at least substantially correspond to the cross-sectional dimensions of the spring strip, falling out of the spring strips from the pockets during handling of the mattress or the pad is not to be feared. In particular, the pockets may be formed in terms of their shape and size in relation to the spring strips, that the spring strips are frictionally held therein in the inserted state in the pockets. In addition and / or alternatively it is provided that the spring strips are positively inserted into the individual pockets, wherein positively means a captive arrangement of the respective spring bar in the respective pocket. In this case, the pockets can be closed at the end, for example, sewn on, or can be closed, for example by means of a button, button, Velcro and / or zipper connection.

In particular, results from the aforementioned embodiment of the spring strips a spring base, which is integrated into the cover and offers the opportunity to roll up the mattress or the pad including the spring base. The bag assembly together with the spring strips arranged therein allows it readily to vacuum a mattress or even a cushion and then roll up as needed. This improves the transportability of the mattress according to the invention or of the pad according to the invention, which is of considerable importance in particular for end customers.

The bag arrangement as such may have different configurations. In a preferred embodiment, the bag arrangement has at least two fastening strips which extend at least substantially over the entire length of the rear side of the cover. In this case, the fastening strips preferably run parallel to one another and / or longitudinally or transversely to the longitudinal axis of the cover. The fastening strips are each firmly connected to the rear side via a plurality of connection points. Preferably, the fastening strips are made of a textile material and in particular are sewn or glued to the back of the cover. It is between adjacent connection points provided in each case a connection-free section which is formed from its dimensions forth such that it forms a pocket receptacle of a pocket for a spring strip. By using at least two fastening strips, a pocket is then formed by opposing pocket receptacles of the fastening strips. In this case, the opposite arrangement of the pocket receptacles means that, when the spring strips are inserted, they extend transversely to the longitudinal direction or in the transverse direction of the cover and, when the cover is fastened, in the corresponding direction of the mattress or the cushion.

Preferably, the fastening strips are spaced from each other and in particular in each case in the edge region of the outside. In this embodiment, the pocket receptacles on the fastening strips each have a passage opening for inserting the respective spring strip. In particular, in this case the spring strips whose length preferably at least substantially correspond to the width of the back of the cover, on the outer edges of the fastening strip over. The spring strips can then be placed, if necessary, directly on opposite frames on the furniture body of the furniture.

In principle, the supernatant of the spring strips on the fastening strips can also be used, if necessary, to provide a fastening means at the respective end of the spring strip to hang the respective spring strip not only on frames of the upholstered furniture, but also to realize an at least releasable attachment to the frames via the fastening means , For example, the attachment means may be caps for releasable attachment to the frame.

Although it is appropriate that the length of the spring strip at least substantially corresponds to the width of the pad or the mattress, it may also be possible in certain embodiments that the length of the spring bar relative to the width of the mattress or the pad is reduced. However, the length of the spring strip should make up at least 80% of the width of the back of the cover or the mattress / pad. In any case, the length of the spring bar must be greater than the clear distance of the frames of the furniture base on which the mattress is placed for use.

Instead of the embodiment described above, in which the two fastening strips, although arranged at the edge, but from the outer longitudinal edge of the back are spaced apart, is provided in an alternative embodiment, at least one of the strips, but preferably both strips on the back of the cover along the edge, ie directly on the longitudinal edge, to arrange, the pocket receptacle is then closed at the end, the receiving openings on the opposite mounting strip thus ultimately to point to each other. While in the embodiment described above, the spring bar is frictionally arranged in the pocket receptacles, resulting in the other embodiment, ultimately, a positive or captive arrangement of the spring bar in the end closed pocket receptacles. In both cases, however, it is readily possible to use the spring strips in the receiving device. This is done either in the embodiment described above by inserting the spring strips in the respective through holes of the pocket receptacles or by inserting into the end closed pocket receptacles, which is readily possible due to the elasticity of the core of the mattress or pad.

In an alternative embodiment of the bag arrangement, this has a single, at least substantially over the length of the back extending fastening strip, which is fixedly connected to the back over a plurality of connection points. The width of this attachment strip is at least 30% of the width of the back. In particular, the width of the fastening strip at least substantially corresponds to the width of the rear side. Ultimately, the bag assembly then extends over the entire back of the cover and thus the mattress or the pad, wherein it usually has a substantially rectangular shape. In this embodiment, a connection-free section for forming a pocket is provided in each case between adjacent connection points. The pockets may also each have a passage opening in this embodiment, or be closed or closable at least at one or even both ends. It is preferred in any case, if the spring strips of the bag assembly can be removed, so that a reference, if necessary, also removed from a mattress or a cushion and, for example, can be cleaned.

Regardless of the type of configuration of the bag assembly with one or a plurality of fastening strips, it is such that adjacent pockets extend at least substantially parallel to one another. In addition, adjacent pockets should also be spaced apart, over at least a tenth of the pocket width. Due to the spacing of the individual pockets ultimately defined gaps between the spring strips for ventilation.

Another advantage in connection with the spring strips according to the invention is that always the same pocket arrangement with appropriate pocket training for strips with different strengths is used. Due to the material combination according to the invention of the fiber core with the surrounding jacket matrix different elasticity levels of the spring strip can be ensured with a uniform outer geometry of the spring strip. For example, if relatively high strengths are required, a thicker fiber core and / or a fiber core having a different cross-sectional shape is used while the surrounding cladding material is thinned as needed. In this case, the outer dimensions do not differ from a spring strip in which a thinner fiber core and a thicker shell are used. Thus, in the case of the spring suspension according to the invention, spring strips with different levels of elasticity can be provided. Furthermore, in the areas where high loads occur, the spacing of adjacent pockets can be reduced. Both measures can be used individually or in combination to absorb high loads in certain areas.

Incidentally, it is in the spring bar according to the invention so that it can be made very easily and inexpensively. Since Vorkrümmungen or biases are not required, required for different widths of the cover or the mattress or the sitter lengths of the spring bar can be readily prepared, for example by cutting to length the necessary length of a female strand produced by pultrusion (endless) strand.

In a preferred embodiment of the invention, the spring bar is mirror-symmetrical about a leg center axis, which is laid in cross-section through the sheath legs, and / or about a central axis of the core perpendicular to the leg center axis and centered about the core.

Preferably in connection with the spring strips is, moreover, that the sheath legs are on the outside wave or rib-shaped with extending in spring strips in the longitudinal direction extending grooves to prevent slipping of the spring bar in the pockets transversely to the spring strip longitudinal direction. In view of the symmetry described above, the wave or rib-like configuration Preferably provided on both the top and on the bottom of the sheath legs.

In addition, the present invention also relates to a piece of furniture, in particular a upholstered furniture, with a furniture base body and at least one mattress and / or at least one cushion of the aforementioned type. The furniture according to the invention may in particular be a sitting or lying furniture.

Other features, advantages and applications of the present invention will become apparent from the following description of exemplary embodiments with reference to the drawing and the drawing itself. In this case, all described and / or illustrated features, alone or in any combination, the subject of the present invention, regardless of their Summary in the claims or their dependency.

Fig. 1

eine perspektivische Ansicht eines erfindungsgemäßen Möbels in Form eines Sessels,

Fig. 2

eine perspektivische Querschnittsansicht eines weiteren erfindungsgemäßen Möbels in Form eines Bettes,

Fig. 3

eine perspektivische Unteransicht einer erfindungsgemäßen Matratze mit teilweise weggebrochenem Bezug,

Fig. 4

eine Ansicht eines Details der Matratze aus Fig. 3,

Fig. 5

eine Unteransicht einer weiteren Ausführungsform einer erfindungsgemäßen Matratze mit teilweise weggebrochenem Bezug,

Fig. 6

eine Ansicht eines Details der Matratze aus Fig. 5,

Fig. 7

eine Unteransicht einer weiteren Ausführungsform einer erfindungsgemäßen Matratze mit teilweise weggebrochenem Bezug,

Fig. 8

eine Ansicht eines Details der Matratze aus Fig. 7,

Fig. 9

eine Unteransicht einer weiteren Ausführungsform einer erfindungsgemäßen Matratze mit teilweise weggebrochenem Bezug,

Fig. 10

eine Ansicht eines Details der Matratze aus Fig. 9,

Fig. 11

eine Unteransicht eines erfindungsgemäßen Polsters mit teilweise weggebrochenem Bezug,

Fig. 12

eine Schnittansicht eines Teils des Polsters auf Fig. 11,

Fig. 13

eine schematische Querschnittsansicht einer Federleiste,

Fig. 14

eine Draufsicht auf die Federleiste aus Fig. 13,

Fig. 15

eine Ansicht einer Ummantelung für eine Federleiste des erfindungsgemäßen Bezuges,

Fig. 16

eine der Fig. 15 entsprechende Darstellung der Ummantelung mit eingesetzter Federleiste,

Fig. 17

eine der Fig. 15 entsprechende Ansicht einer anderen Ausführungsform einer Ummantelung ohne Federleiste,

Fig. 18

eine der Fig. 17 entsprechende Ansicht der Ummantelung mit eingesetzter Federleiste und

Fig. 19

eine Ansicht eines erfindungsgemäßen Bezuges mit Matratze mit eingesetzten Federleisten, die von einer Ummantelung umgeben sind.

It shows

Fig. 1

a perspective view of a furniture according to the invention in the form of a chair,

Fig. 2

a perspective cross-sectional view of another furniture according to the invention in the form of a bed,

Fig. 3

a perspective bottom view of a mattress according to the invention with partially broken away cover,

Fig. 4

a view of a detail of the mattress Fig. 3 .

Fig. 5

a bottom view of another embodiment of a mattress according to the invention with partially broken away cover,

Fig. 6

a view of a detail of the mattress Fig. 5 .

Fig. 7

a bottom view of another embodiment of a mattress according to the invention with partially broken away cover,

Fig. 8

a view of a detail of the mattress Fig. 7 .

Fig. 9

a bottom view of another embodiment of a mattress according to the invention with partially broken away cover,

Fig. 10

a view of a detail of the mattress Fig. 9 .

Fig. 11

a bottom view of a pad according to the invention with partially broken away cover,

Fig. 12

a sectional view of a portion of the pad Fig. 11 .

Fig. 13

a schematic cross-sectional view of a spring bar,

Fig. 14

a plan view of the spring bar Fig. 13 .

Fig. 15

a view of a sheath for a spring bar of the cover according to the invention,

Fig. 16

one of the Fig. 15 corresponding representation of the casing with inserted spring bar,

Fig. 17

one of the Fig. 15 corresponding view of another embodiment of a casing without spring strip,

Fig. 18

one of the Fig. 17 corresponding view of the casing with inserted spring bar and

Fig. 19

a view of a cover according to the invention with mattress with inserted spring strips which are surrounded by a sheath.

In Fig. 1 is a furniture 1 as upholstered furniture, which in this case is a chair, shown. The furniture 1 has a furniture base 2 and a pad 3, which is placed on the furniture body 2. Not shown here are frames on the furniture body 2, on which the pad 3 is placed. The pad 3 can be removed from the furniture body 2.

In Fig. 2 schematically a bed is shown as furniture 1. The bed also has a furniture base 2 in the form of a frame, with each other Pages of the furniture body 2 frames 4, 5 are provided. Put on the frames 4, 5 is a mattress 6.

The frame arrangement, not shown in the in Fig. 1 shown furniture 1 corresponds in principle to in Fig. 2 illustrated frame arrangement, wherein the frames 4, 5 in the in Fig. 1 illustrated embodiment both parallel and transverse to the backrest 7 of the furniture body 2 can run.

In the Fig. 3 to 10 Various embodiments of a mattress 6 are shown. The following comments on the mattress 6 refer in the same way to a cushion 3, as in Fig. 11 is shown by way of example.

The mattress 6 has a cover 8 and an elastic core 9 received in the cover 8. The core 9 is in particular a foam core made of any desired foam. However, other elastic materials can come as a core material of the mattress 6 in question. The core 9 has a substantially cuboidal body shape and the cover 8 mounted on the core 9 corresponds at least substantially to the shape of the core 9 from its interior. The cover 8 has a useful side 10 as an upper or outer side, which usually facing the user in the state of use. In the state of use, the user ultimately sits or lies on the useful side. Furthermore, the cover 8 has a rear side 11 on the side opposite the useful side 10. In the state of use, the back 11 faces away from the user.

It is essential in the present invention that a receiving device for a spring base 12 is provided on the rear side 11 of the cover 8. In this case, the receiving device is located on the outside of the back 11, so it is accessible from the bottom of the mattress 6 ago. The provided on the outside of the back 11 receiving device is designed as a pocket assembly 13 with a plurality of pockets 14. The pockets 14 are each formed for receiving and arranging spring strips 15, wherein, as is apparent from the individual figures, per pocket 14, a spring bar 15 is provided. By the spring strips 15, the spring base 12 is finally formed as a slatted frame, which is connected to the cover 8 and thus integrated into the mattress 6. The individual spring strips 15 run parallel to one another and transversely to the longitudinal axis L of the mattress 6.

In the illustrated embodiments, the base 12 integrated in the reference 8 has ten spring strips 15 each. All spring strips 15 have the same hardness or rigidity. However, it is also possible that different spring strips 15 are provided. For example, 6 harder or stiffer spring strips 15 can be provided in the central region of the mattress, while on the head and / or the foot side of the mattress 6 rather softer, less rigid spring strips 15 can be provided. Incidentally, it is understood that the number of spring strips 15 of the spring base 12 can basically vary. While the spring strips 15 are equally spaced in the illustrated embodiments, in principle, a different distance between individual spring strips 15 may be provided.

As can be seen in particular from the detailed representations according to the Fig. 4 . 6 . 8th and 10 and by the way Fig. 12 results, the spring strips 15 are arranged in the pockets 14 with little play in the direction of the longitudinal axis L. By realizing a small play of the spring strips 15 in the respective pockets 14, there is the possibility that the spring strips 15 can move limited under load. Preferably, the play of the spring strips 15 in the pockets 14 is between 0.1 to 1.0 times the width of the spring strip 15. In particular, the game is between 0.2 to 0.5 times the spring strip width.

In the illustrated embodiments, all spring strips 15 of the spring base 12 are identical. In this regard, in particular on the FIGS. 13 and 14 directed. Each of the spring strips 15 has a fiber core 16 made of glass fibers or GRP, ie glass fiber reinforced plastic, and a surrounding the fiber core 16 jacket 17 made of a thermoplastic material. The jacket 17 is presently made of polypropylene. The jacket 17 is annular due to the present circular fiber core 16. On opposite sides of the shell 17 is in each case a jacket leg 18. The jacket legs 18, which adjoin the jacket 17, result in an increased contact surface of the spring strips 15.

The sheath legs 18 preferably have a length that is equal to or greater than the diameter of the fiber core 16. In contrast, the maximum thickness of the sheath legs 18 is less than half the diameter of the fiber core 16. The relatively narrow, elongated sheath legs 18, which ultimately extend over the entire length of the spring bar 15, there is only a relatively low material requirement at a relative wide contact surface.

Incidentally, the illustrated Fig. 13 in that the spring strip 15, viewed in cross-section, is mirror-symmetrical about a leg central axis x laid through the jacket legs 18 and about a central axis y of the core perpendicular to the central axis x of the legs. This symmetry simplifies the insertion of the spring strips 15 in the pockets 14 of the bag assembly 13, as to a certain orientation of the spring strips 15 when inserting into the pockets 14 of the bag assembly 13 does not need to be taken.

Furthermore, it follows from the FIGS. 13 and 14 in that the sheath legs 18 are undulating on the upper side and underside with grooves 19 and projections 20 extending in the spring strip longitudinal direction.

As can be seen moreover from the individual embodiments of the mattress 6, the length of the spring strips 15 corresponds at least substantially to the width of the mattress 6 or the back 11 of the cover 8. In the case of the Fig. 3 and 5 illustrated embodiments in which the pockets 14 are open at the ends, the spring strips 15 may be slightly longer than in the in the Fig. 5 and 9 illustrated embodiments in which the pockets 14 are closed at the end. In the embodiment with open pockets 14, the length of the spring strips 15 may correspond approximately to the width of the mattress 6 or be slightly smaller, namely between 1% to 5%. When the pockets 14 are closed at the end, the length of the spring strips 15, which is generally reduced by 1% to 20%, is in relation to the width of the mattress 6 or the back 11 of the cover 8. In all cases, however, it is so that the length of the spring strips 15 is always greater than the clear distance between the frames 4, 5 of the furniture base body second

In the in the Fig. 3 to 6 illustrated embodiment, the bag assembly 13 each 2 parallel to each other and along the longitudinal axis L of the cover 8 extending fastening strips 21, 22 which extend over the entire length of the back 11. The fastening strips 21, 22 can in principle have the same distance to the longitudinal axis L, but can also, as shown, be spaced at different distances from the latter. The fastening strips 21, 22 are fixedly connected to the rear side 11 of the cover 8 via a plurality of connection points 23. In the present case, the fastening strips 21, 22 are sewn to the back 11, while basically a bonding would be possible. Between adjacent connection points 23, a connection-free section is provided in each case, which forms a pocket receptacle 24 of a pocket 14. With two fastening strips 21, 22 while a pocket 14 is formed by two opposing pocket receptacles 24. In this case, an opposing arrangement means that the associated pocket receivers 24 lie on a transverse axis extending at right angles to the longitudinal axis L.

It is understood, moreover, that instead of the illustrated embodiments with two fastening strips 21, 22, a larger number of such strips can be provided.

The pocket holder 24 at the in the 3 and 4 illustrated embodiment has a through hole 25 for insertion of a spring bar 15. In the in the FIGS. 5 and 6 In the embodiment shown, the pocket receptacle 24 is closed at the end, namely toward the edge of the mattress 6 or towards the cover 8, so that a receiving opening 26 results on the respective fastening strip 21, 22. The associated receiving openings 26 each point in the direction of the other attachment strip.

In the Fig. 7 to 10 Embodiments are shown in which the bag assembly 13 has a single, at least substantially over the length of the back 11 extending attachment strip 27 which is fixedly connected to the back 11 via a plurality of connection points 23. Also in this embodiment, the fastening strip 27 is sewn to the back 11. In the illustrated embodiments, the attachment strip 27 extends over the entire rear side. Between adjacent connection points 23 is in each case a connection-free section for forming the respective pockets 14.

In the in the FIGS. 7 and 8 illustrated embodiment, the pockets 14 each have a through hole 25. In the in the FIGS. 9 and 10 illustrated embodiment, the pockets 14 are closed at one end. At the other end, the pockets 14 are openable. For this purpose, the fastening strip 27 has a peripheral tab 28 which can be fastened to a longitudinal side 29 of the cover 8. The attachment can for example be made via a Velcro connection 30.

It is understood that instead of a hook and loop fastener other possibilities for closing the pockets 14 in particular on the end can be provided. Thus, the pockets 14 can also be buttoned at the end. Also push button or zippered connections are possible.

In Fig. 11 a cushion 3 is shown schematically, which corresponds to its basic structure of the mattress 6. Differences exist only in the dimensions in comparison to the mattress 6. The pad 3, like the mattress 6, also has a cover 8 and a core 9 and is, moreover, constructed in the same way as the mattress 6 described above, also with regard to all described mattresses. Embodiments, so that all the above statements on the mattress 6 apply in the same way for the pad 3.

After coating the cover 8 on the core 9 of the pad 3 or the mattress 6, the spring strips 15 are inserted into the pockets 14 and pocket receptacles 24, depending on the embodiment. In the embodiment according to Fig. 9 the pockets 14 are closed by the edge tab 28 in conjunction with the Velcro connection 30 after insertion of the spring strips 15. In the embodiment according to Fig. 5 the spring strips 15 are inserted with their one end in a pocket receptacle 24, while the mattress 6 or the pad 3 are then moved due to the elasticity so that the other end of the spring strips 15 can also be inserted into the respective opposite pocket receptacle 24. In this way, then results in a positive or fixed arrangement of the spring strips 15 in the individual pockets fourteenth

It is not shown that a mattress 6 or a pad 3, in particular in the vacuum-formed state together with the spring base 12, that is, together with the spring strips 15 provided on the reference 8, can be designed to be rollable.

In Fig. 15 a sheath 31 for a spring bar 15 is shown. The sheath 31 surrounds the spring strip 15 at least substantially. In the casing 31 there is a recess 32 which represents a negative shape of the cross section of the spring bar 15 from the outer shape. This means that the recess 32 at least substantially corresponds in size to the width and height dimensions of the spring strip 15. The recess 32 is accessible via a slot 33. The length of the sheath 31 corresponds at least substantially to the length of the spring strip 15. If necessary, the sheath 31 may be slightly longer than the spring strip 15, so that the front ends of the spring strip 15 ultimately do not survive beyond the sheath 31 frontally. Preferably, the spring strip 15 is slightly smaller in length, namely between 0 to 1 cm, than the length of the casing 31. On the other hand, the height H and the width B of the casing 31 each by a factor of 1.1 to 3.0 greater than the corresponding height h and width b of the spring strip 15. By this configuration, the spring bar 15 is ultimately completely - except for the particular over the entire length of the sheath 31 extending slot 33 - surrounded by the material of the sheath 31.

The sheath 31 itself consists of an elastic foam which is compressible. The dimensions of the sheath 31 are placed on the volume of the pocket 14, so that the spring bar 15 with the surrounding sheath 31, the pocket 14 at least substantially fills after insertion of the spring bar 15. In this way, not only a reciprocation of the spring bar 15 is avoided in the pocket 14, a chafing of the edges of the spring bar 15 on the material of the bag 14 is avoided.

At the in Fig. 15 In the embodiment shown, the sheath 31 is produced as a separate body with the insertion slot 33. To insert the spring strip 15, the sheath 31 is bent at its lateral limbs 34, 35, so that insertion of the spring strip 15 is possible. Fig. 16 shows the inserted state.

In Fig. 17 an embodiment is shown in which the sheath 31 has a semi-elliptical shape. In this embodiment, the sheath 31 is also made as a foamed body of an elastic, compressible foam, in which the spring bar 15 is inserted. The inserted state shows Fig. 19 , In principle, however, it is also possible to foam the spring strip 15, in particular immediately after its manufacture, that is to say as a continuous strand or else as a finished spring strip severed from the endless strand, so that then the in Fig. 19 shown state results. It is understood that even at the in Fig. 18 Sheath 31 shown in principle may be provided a slot.

The sheaths 31 shown are mirror-symmetrical with respect to the core central axis y in both embodiments. In principle, however, it is also possible to choose a symmetrical shape in which there is also a symmetry with respect to the central axis x of the femur. In this case, the legs 34, 35 would then be arranged symmetrically in both embodiments to the main body of the sheath.

LIST OF REFERENCE NUMBERS

1

Furniture

2

Furniture body

3

pad

4

frame

5

frame

6

mattress

7

backrest

8th

reference

9

core

10

useful side

11

back

12

under suspension

13

pocket arrangement

14

bag

15

Female connector

16

fiber core

17

coat

18

jacket leg

19

groove

20

head Start

21

attachment strips

22

fastener strips

23

junction

24

bag mount

25

Through opening

26

receiving opening

27

attachment strips

28

edge flap

29

long side

30

Velcro connection

31

jacket

32

recess

33

slot

34

leg

35

leg

B

width

b

width

H

height

H

height

L

longitudinal axis

x

Leg central axis

y

Core central axis

Claims (15)

1. A cover (8) for a mattress (6) or a cushion (3) of a piece of furniture (1), having a useful side (10) and a rear side (11), wherein a receiving device for a supporting spring system (12) comprising a spring strip (15) is provided on the rear side (11), and wherein at least one spring strip (15) is formed from a fibre-reinforced plastic material having a preferably pultruded fibre core (16) and a jacket (17) which encloses the fibre core (16) and is made of a plastic,
   characterised in that
   in each case a jacket leg (18) protrudes on opposite sides of the jacket (17) for an increased bearing surface of the spring strip (15).
2. The cover according to claim 1, characterised in that the jacket legs (18) have a length which is equal to or greater than the diameter of the fibre core (16) and/or that the maximum thickness of each of the jacket legs (18) is less than half the diameter of the fibre core (16).
3. The cover according to claim 1 or 2, characterised in that the jacket legs (18) extend at least substantially over the entire length of the spring strip (15).
4. The cover according to one of the preceding claims, characterised in that the jacket leg (18) is designed in a strip-like manner with at least substantially constant thickness over the width thereof.
5. The cover according to one of the preceding claims, characterised in that the spring strip (15) is mirror-symmetrical about a leg central axis (x) laid in cross section through the jacket leg (18) and/or about a core central axis (y) which extends perpendicularly to the leg central axis (x) and is laid through the fibre core (16).
6. The cover according to one of the preceding claims, characterised in that the receiving device is provided on the outside of the rear side (11) and/or that the receiving device comprises a pocket arrangement (13) having a plurality of pockets (14) for arranging the spring strips (15), in particular wherein a spring strip (15) is provided per pocket (14).
7. The cover according to one of the preceding claims, characterised in that the pocket arrangement (13) comprises at least two fastening strips (21, 22) which extend in particular parallel to each other and/or longitudinal or transverse to the longitudinal axis (L) of the cover (8), extend at least substantially over the length of the rear side (11) and are fixedly connected, in particular sewn or adhesively bonded, in each case to the rear side (11) via a plurality of connecting points (23), wherein a connection-free portion for forming a pocket receptacle (23) of a pocket (14) is provided in each case between adjacent connecting points (23), in particular wherein a pocket (14) is formed by mutually opposite pocket receptacles (24) of the fastening strips (21, 22).
8. The cover according to one of the preceding claims, characterised in that the pocket receptacle (24) has a through opening (25) for inserting a spring strip (15) and/or that the pocket receptacle (24) is closed at the end and has a receiving opening (26), wherein the receiving opening of the one fastening strip (21, 22) points in the direction of the other fastening strip (22, 21).
9. The cover according to one of the preceding claims, characterised in that the pocket arrangement (13) has a single fastening strip (27) which extends at least substantially over the length of the rear side (11) and which is firmly connected, in particular sewn or adhesively bonded, to the rear side (11) via a plurality of connecting points (23), and the width of said fastening strip corresponds to at least 30% of, and in particular at least substantially to, the width of the rear side (11), wherein a connection-free portion for forming a pocket (14) is provided in each case between adjacent connecting points (23), in particular wherein the pocket (14) has a through opening (25) for inserting a spring strip (15) or in particular wherein the pocket (14) is closed or closable at at least one end.
10. A mattress (6) or cushion (3) having a cover (8) according to any one of claims 1 to 9 and an elastic core (9), preferably a foam core, accommodated in the cover (8).
11. The mattress or cushion according to claim 10, characterised in that a supporting spring system (12) is provided on the rear side (11) of the cover (8), in particular wherein the supporting spring system (12) is formed as a slatted frame having a plurality of spring strips (15) which extend in particular parallel to one another.
12. The mattress or cushion according to claim 10 or 11, characterised in that the spring strip (15) is frictionally held in the pocket (14) and/or that the spring strip (15) is form-fittingly inserted into the pocket (14).
13. The mattress or cushion according to one of the preceding claims, characterised in that the length of the spring strip (15) extends over at least 80% of the width of the rear side (11) of the cover (8), preferably at least substantially corresponds to the width of the rear side (11) of the cover (8).
14. The mattress or cushion according to one of the preceding claims, characterised in that the mattress (6) or the cushion (3) is designed so as to be rollable together with the supporting spring system (12).
15. A piece of furniture (1) having a mattress (6) or a cushion (3) according to any one of claims 10 to 14.

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