Mattress core for a piece of furniture for lying on, and child's mattress

Abstract

A mattress core for a piece of reclining furniture, in particular for a children's mattress, is proposed. The mattress core has at least one mattress frame element; and at least one mattress insert element, wherein the at least one mattress frame element has at least one recess on at least a partial area of an outer surface of the mattress core formed as a lying surface for a user, and wherein the at least one mattress insert element is arranged so as to be at least partially removable in the at least one recess of the at least one mattress frame element.

Description

REFERENCE TO RELATED APPLICATIONS

[0001] The present application claims priority from German utility model application No. 20 2022 105 040.6, filed on Sep. 7, 2022, which is incorporated herein by reference in its entirety.TECHNICAL FIELD

[0002] The present disclosure relates to a mattress core for a piece of reclining furniture and to a mattress with such a mattress core. The disclosure also relates to a mattress core for a children's mattress and a children's mattress. In addition, the disclosure relates to the use of a mattress core for a children's mattress.BACKGROUND

[0003] Mattress cores for reclining furniture, in particular mattress cores for children's mattresses, are usually made from a one-piece mattress element, for example from foam, with a uniform degree of firmness. Mattress cores can also be in several parts, whereby several mattress elements are stacked on top of each other and glued together.

[0004] This means that conventional mattress cores are relatively bulky and bulky. It is also generally not possible to clean the mattress cores, or only with special equipment. However, the latter may be desirable in particular in the case of above-average or frequent soiling of mattress cores or mattresses, as is often the case with children or older users, for example.

[0005] Due to the inadequate cleanability, known mattress cores or mattresses are replaced when soiled, which is cost-intensive and disadvantageous from an ecological point of view.SUMMARY OF THE DISCLOSURE

[0006] The present disclosure therefore provides an improved mattress core for a piece of reclining furniture, in particular for a children's mattress, as well as an improved mattress and / or children's mattress which is capable of at least partially overcoming the disadvantages of known mattress cores described above.

[0007] The invention is defined in the independent claims. Further developments and embodiments of the invention are provided in the dependent claims and the following description.

[0008] The present disclosure relates to a mattress core for a piece of reclining furniture, in particular a mattress core for a children's mattress, and to a mattress with such a mattress core. In particular, the mattress may be formed as a children's mattress and / or a mattress for children. The disclosure also relates to the use of a mattress core for a children's mattress. All the preceding and following description of a mattress core applies equally to the mattress or children's mattress and vice versa.

[0009] One aspect of the present disclosure relates to a mattress core for a piece of reclining furniture, in particular a mattress core for a children's mattress. In other words, the mattress core may be formed for a children's mattress and / or may be formed as a children's mattress. The mattress core comprises at least one mattress frame element and at least one mattress insert element, wherein the mattress frame element has at least one recess on at least a partial area of an outer surface of the mattress core formed as a lying surface for a user. Furthermore, the at least one mattress insert element is arranged to be at least partially removable in the at least one recess of the at least one mattress frame element.

[0010] For example, the mattress insert element can be inserted into and / or removed from the recess in the mattress frame element, for example by a user of the mattress core. A removable arrangement of the mattress insert element in the at least one recess of the mattress frame element can, in particular, improve the cleanability or washability of the mattress core or make it possible in the first place. For example, the mattress frame element and the mattress insert element can be washed separately in a conventional washing machine, since each of the elements taken separately can be significantly reduced in volume and / or weight compared to a complete, conventional mattress core. The mattress insert element can also be exposed to more soiling and stress than the mattress frame element, for example because it can provide part of the lying surface for the user. Due to the removability of the mattress insert element from the recess, only this can be cleaned and / or washed in an advantageous manner without necessarily having to clean the mattress frame element. The two-part design of the mattress core can also significantly reduce the drying time after cleaning the mattress core.

[0011] In particular when the mattress core is used for a children's mattress or as a children's mattress, such increased cleanability can be advantageous. It should be noted at this point that the mattress core according to the disclosure can be used in an advantageous manner not only for children's mattresses, but also for mattresses for adults, in particular elderly people or people in need of care. For example, if soiled with urine, other bodily fluids or dirt caused in any other way, the mattress insert element can be removed from the recess as required and cleaned, washed and / or disinfected comprehensively and quickly, for example in any conventional washing machine. Immediately after cleaning (or after an optional short drying time), the mattress insert element can be placed back into the recess and the mattress core is available for use again. Overall, this can significantly increase hygiene.

[0012] Due to the separability and improved cleanability of the mattress insert element and the mattress frame, cleaning costs and corresponding transportation costs, for example for transporting the mattress to a dry cleaner, can also be avoided. There is also no need to regularly replace the mattress core, as is the case with conventional mattress cores. In addition, the improved washability and cleanability can significantly increase the service life of the mattress core. Overall, this can significantly improve the sustainability of the mattress core or mattress.

[0013] The at least partial, in particular essentially complete, accommodation of the at least one mattress insert element in the at least one recess can also enable the at least one mattress insert element to form a common lying surface together with the at least one mattress frame element. For example, the mattress insert element can be received and / or arranged in the recess so that it cannot fall out and / or slip.

[0014] The term mattress core is to be understood broadly in the present case and includes all devices or elements which provide a lying surface for a user and can form a mattress or can be part of a mattress. The mattress core can, for example, be formed entirely or at least partially from foam, latex, natural fibers, rubber, natural products and / or spring cores. However, other materials are possible.

[0015] The mattress core can be formed in two parts from the mattress frame element and the mattress insert element. Alternatively, the mattress core can also have more than two components. For example, the mattress core can have several recesses for several mattress insert elements. Alternatively or additionally, the mattress frame element and / or the one or more mattress insert elements may be formed in several parts.

[0016] The mattress core can also have several reclining areas or reclining zones. For example, the mattress core can have two to seven lying zones. The lying zones can have different deformation properties, compression hardness, elastic properties and / or degrees of firmness so that they can meet the different support requirements of the individual body regions. For example, this can enable an ergonomic lying position, especially when the user is lying on their back or side.

[0017] In principle, the mattress core can have any size and / or degree of firmness. In particular, the mattress core can have a base area of around 60'120 cm2, 60×140 cm2, 70×140 cm2, 70×160 cm2, 80×160 cm2, 80×170 cm2, 70×170 cm2, 80×180 cm2, 80×190 cm2, 80×200 cm2, 90×190 cm2, 90×200 cm2, 90×220 cm2, 100×190 cm2, 100×200 cm2, 100×220 cm2, 120×200 cm2, 140×200 cm2, 140×220 cm2, 160×200 cm2, 160×220 cm2, 180×200 cm2, 180×220 cm2, 200×200 cm2, or 200×220 cm2. Alternatively or additionally, the mattress core can have any degree of firmness, for example a firmness range from H1 to H5.

[0018] The mattress core has a top side and a bottom side opposite the top side, which can be connected at the sides by corresponding side surfaces. The upper side, the lower side and the side surfaces of the mattress core provide the outer sides or outer surface of the mattress core. In the context of the present disclosure, the lying surface can refer to the surface of the upper side and / or underside of the mattress core, which can serve as a support surface for a user, for example in a lying position, in the supine position and / or in the lateral position.

[0019] The surface of the top side, the underside and / or the side surfaces of the mattress core can be formed to be smooth and / or without a profile. Alternatively, a profile can be formed in at least a partial area of one of the upper side, the lower side, the side surfaces and / or the lying surface, for example in order to locally modify the elastic properties of the mattress core. Possible profiles may comprise one or more beads, grooves, recesses, transverse grooves, openings, indentations or the like.

[0020] The term children's mattress is to be understood broadly here and includes all mattresses or mattress cores that are specially formed for children, i.e. people in childhood, i.e. in the period of a person's life from birth to sexual development (puberty). Children's mattresses can have a size or base area of around 60×120 cm2, 60×140 cm2, 70×140 cm2, 70×160 cm2, 80×160 cm2, 80×170 cm2, 70×170 cm2, 80×180 cm2, for example, but are not limited to this. The firmness level of children's mattresses can be defined relative to the average body weight, so that children's mattresses or mattress cores for children's mattresses can have a lower firmness level and thus be softer than mattresses or mattress cores for adults.

[0021] The term reclining furniture is to be understood broadly here and can include all furniture or furnishing items on which a person and / or an animal can sit and / or lie. Exemplary embodiments of reclining furniture are armchairs, sofas, beds, mats, chairs and loungers. Optionally, reclining furniture can have a slatted frame or spring frame on which a mattress core and / or a mattress can be placed.

[0022] The term mattress frame element is to be understood broadly in the present case and comprises all elements of any geometry and shape and of any material, which have at least one recess into which the at least one mattress insert element can be inserted or arranged so as to be removable. The mattress frame element can be formed in one piece or in several pieces, whereby the several parts of the multi-piece mattress frame element can be connected to each other in a detachable or non-detachable manner, in particular glued or welded. The mattress frame element can have any shape. Exemplary shapes of the mattress frame element or the base surface of the mattress element can be square, rectangular, triangular, circular, oval or polygonal, but are not limited to these.

[0023] In particular, the mattress frame element may have a substantially rectangular base and / or be formed substantially in the shape of a parallelepiped. The mattress frame element may have a height, a width and a length, for example with a width / length ratio of around 25 to 75%, in particular around 50%, a height / length ratio of around 5 to 20%, in particular around 7%, and a height / width ratio of around 10 to 25%, in particular around 16%. However, other ratios are possible.

[0024] The mattress frame element comprises a top surface, a bottom surface and at least one side surface. The surface of the top side, the underside and / or the at least one side surface of the mattress frame element may denote a smooth surface. Alternatively, a profile may be formed in at least a partial area of one of the top side, the bottom side, the side surfaces and / or the lying surface, for example in order to locally modify the elastic properties of the mattress core. Possible profiles may comprise one or more beads, grooves, recesses, transverse grooves, openings, indentations or the like.

[0025] The mattress frame element can have a compression hardness of around 2 kPa to 8 kPa, for example around 2 kPa to 4 kPa, in particular from around 2.5 kPa to 3.5 kPa, for example around 3.2 kPa, but is not limited to this. However, other compression hardnesses are possible. The compression hardness of the mattress frame element can be less than, equal to, identical to or greater than the compression hardness of the at least one mattress insert element. The surface area of the top side, the underside and / or the side surfaces of the mattress frame element can be greater than the surface area of the top side, the underside and / or the side surfaces of the at least one mattress insert element.

[0026] The term recess is to be understood broadly in the present case, and can denote a depression, opening and / or recess of any shape and size, which can extend partially into, completely into or completely through the at least one mattress frame element, i.e. into the volume of the at least one mattress frame element. The recess may extend from at least part of a lying surface for a user into the interior or into an interior volume of the at least one mattress frame element, i.e. into the volume of the at least one mattress frame element. Alternatively or additionally, the recess may also extend from at least a part of a surface opposite the lying surface of the user into the interior of the at least one mattress frame element.

[0027] For example, at least one recess can be provided on the top and bottom of the mattress frame element. In this case, at least one mattress insert element can be arranged in one or both recesses.

[0028] The at least one recess can have a volume which can be smaller than or equal to the volume of the at least one mattress frame element, so that the mattress insert element can be held and / or received in a form-fitting manner in the at least one recess. The recess can have a round, elliptical, angular, in particular square, rectangular or polygonal shape, but is not limited to this.

[0029] The at least one recess and / or the at least one mattress insert element may comprise a length, a width and a depth, for example with a width / length ratio of around 30 to 50%, in particular around 41%, a depth / length ratio of around 0.01 to 5%, in particular around 0.02%, a depth / width ratio of around 0.05 to 5%, in particular around 0.06%. However, other ratios are possible. Alternatively or additionally, the recess may comprise, but is not limited to, a ratio between the width of the recess and the width of the at least one mattress frame element of about 50% to about 100%, in particular about 70% to 90%, and / or a ratio between the depth of the recess and the height of the at least one mattress frame element of about 10% to 100%, in particular about 30% to 95%. Alternatively or additionally, the recess may comprise a ratio between the length of the recess and the length of the at least one mattress frame element of approximately 70% to 100%, in particular approximately 85% to 95%, and a ratio between the width of the recess and the width of the at least one mattress frame element of approximately 50% to 100%, in particular approximately 70% to 95%.

[0030] The recess comprises at least one bottom surface (or underside), a top surface (or upper surface) or outer surface (or outer side), which is exposed when the mattress insert is removed from the recess, and at least one side surface (or side). The at least one surface and / or the at least one side surface may comprise, but is not limited to, a smooth surface and / or a contoured surface. The recess may comprise, but is not limited to, a uniform depth, a plurality of regions having a varying depth, regions having a constant depth, and / or regions having a decreasing and increasing depth.

[0031] The term mattress insert element is also to be understood broadly in the present case and includes all elements of any geometry and shape and of any material which can be arranged in the at least one recess of the at least one mattress frame element. The at least one mattress insert element can be in contact with the exposed surface or outer surface and / or the at least one side surface, in particular all side surfaces of the recess, when the mattress insert element is arranged in the recess. The mattress insert element can be formed in one piece or in several pieces, whereby the several parts of the multi-piece mattress insert element can be detachably or non-detachably connected to one another, in particular glued or welded.

[0032] The at least one mattress insert element can have any shape. Exemplary shapes of the at least one mattress insert element can be square, rectangular, triangular, circular, oval, polygonal, but are not limited to these. The at least one mattress insert element may comprise a height, a width and a length, for example in a width / length ratio of about 30 to 50%, in particular about 41%, a height / length ratio of about 0.01 to 5%, in particular about 0.02%, and a height / width ratio of about 0.05 to 5%, in particular about 0.06%. Alternatively or additionally, the at least one mattress insertion element may have a ratio between the width of the at least one mattress insertion element and the width of the at least one mattress frame element of about 50% to 100%, in particular about 70% to 95%, a ratio between the length of the at least one mattress insertion element and the length of the at least one mattress frame element of about 70% to 100%, in particular about 85% to 95%, and a ratio between the height of the at least one mattress insertion element and the length of the at least one mattress frame element of about 50% to 100%, in particular about 85% to 95%, in particular around 85% to 95%, and / or a ratio between the height of the at least one mattress insert element and the height of the at least one mattress frame element of 10% to 100%, in particular around 30% to 95%, but is not limited to this.

[0033] Alternatively or additionally, the at least one mattress insert element can have a height that is essentially identical to or greater than the height of the at least one mattress frame element. Alternatively or additionally, the height of the at least one mattress insert element may be less than, identical to or greater than the height of the at least one recess.

[0034] The at least one mattress insert element comprises an upper side (or surface), an underside (or surface) and at least one side surface (or side). The surface of the upper side, the lower side and / or the at least one side surface of the at least one mattress insert element can be a smooth surface and / or a contoured surface.

[0035] For example, one or more side surfaces of the recess or the mattress frame element may have a contour. An exemplary embodiment of a contoured surface is, for example, a stepped side surface. In the case of a contoured surface, the surface of the mattress frame element opposite the contoured surface can be formed in a corresponding or complementary manner, so that both surfaces are completely or at least partially in contact and / or the contours can at least partially interlock.

[0036] The at least one mattress insert element can have a compression hardness of around 2 kPa to 8 kPa, for example around 2 kPa to, in particular, around 2.5 kPa to 3.5 kPa, for example 3.2 kPa, but is not limited to this. The compression hardness of the at least one mattress insert element can be less than, equal to, identical to or greater than the compression hardness of the at least one mattress frame element. In the case of a plurality of mattress insert elements, each mattress element of the plurality of mattress elements may have the same compression hardness or different compression hardnesses.

[0037] The surface area of the upper side, the lower side and / or the side surfaces of the at least one mattress insert element can be smaller than the corresponding surface area of the upper side, the lower side and / or the side surfaces of the at least one mattress frame element.

[0038] The volume of the at least one mattress insert element can be smaller, identical or larger than the volume of the at least one mattress frame element. The at least one mattress insert element can at least partially or completely fill the volume of the at least one recess. The volume of the recess can be defined by the side surfaces and the outer or upper side of the recess. The outer or upper side of the recess can be oriented in the direction of a user lying on the mattress core. The at least one mattress insert element can be arranged on both sides in the recess, i.e. the mattress element can be inserted into the recess with its upper side or underside first. When the mattress insert element is received in the recess, the upper sides of the recess and of the mattress insert element or the upper side of the recess and the lower side of the mattress insert element can therefore be in contact with one another.

[0039] The term removable can be understood in the context of the present to mean that the mattress insert element can be inserted into and removed from the recess, for example mechanically or by a user. The mattress insert element can be detachably connected and / or coupled to the at least one mattress frame element. Alternatively or additionally, the mattress insert element can be separably and / or detachably accommodated in the at least one recess of the mattress frame element. The connection between the at least one mattress insert element and the at least one mattress frame element or its recess can be provided by means of positive locking and / or frictional locking, in particular frictional locking, but is not limited to this.

[0040] For example, the mattress insert element can be held by form fit in the recess. For example, the mattress insert element can be elastically deformed, such as squeezed, when it is inserted into the recess. After inserting the mattress insert element into the recess, it can be elastically deformed into its original shape in order to essentially completely fill the recess and be held in it. This can provide a non-slip arrangement of the at least one mattress insert element in the recess.

[0041] Optionally, however, the mattress insert element can also be glued and / or welded to the mattress frame element, at least in certain areas. Alternatively or additionally, the connection between the at least one mattress insert element and the at least one mattress frame element can be made by means of a strap or a Velcro fastener.

[0042] According to an embodiment, the at least one mattress insert element is insertable and / or removable into the at least one recess of the at least one mattress frame element via the outer surface of the mattress core formed as a lying surface for the user.

[0043] The insertion or removal of the at least one mattress insert element via the outer surface of the mattress core, formed as a lying surface for the user, into the at least one recess can enable simple and uncomplicated handling of the mattress or the mattress core. This can also increase the proportion of the outer surface of the mattress insert element on the lying surface, which can have an advantageous effect on hygiene, for example because the mattress insert element can be washed and cleaned separately.

[0044] In a further embodiment, the at least one recess is configured such that the at least one mattress frame element surrounds and / or encloses the at least one mattress insert element arranged in the at least one recess at least along part of an outer circumference or perimeter, in particular completely. In other words, the mattress frame element can surround and / or enclose the mattress insert element along at least part of the outer circumference or perimeter. As a result, the mattress insert element can lie flush against the mattress frame element along at least the part of the outer circumference. For example, unevenness in the lying surface can thus be avoided and lying comfort increased.

[0045] Furthermore, this can provide a step edge, for example by that part of the mattress frame element which runs around the mattress insert element along the outer circumference. In other words, a step edge can be formed by the mattress frame element, which runs at least partially around the outer circumference of the mattress insert element.

[0046] In a further embodiment, the at least one mattress insert element is accommodated in a close-fitting and / or flush manner in the at least one recess. This allows the mattress insert element to be held in the recess in a form-fitting and / or force-fitting manner. Further fastening means, such as gluing, can therefore be dispensed with. This in turn can be advantageously reflected in a reduced pollutant load on the mattress core.

[0047] The term close-fitting is to be understood broadly in the present case and includes that the at least one mattress insertion element is and / or is in direct contact and / or in contact with at least one side surface of the at least one recess. Alternatively, the at least one mattress insert element can be in direct contact and / or in contact with all side surfaces of the at least one recess. Alternatively or additionally, an outer side of the mattress insert element can be in contact with an outer side of the recess. In particular, all sides of the mattress insert element which are opposite the mattress frame element can be in contact with the corresponding sides or surfaces of the mattress frame element. This can have a further advantageous effect on the stability of the mattress core, for example because the mattress insert element can be held securely in the recess.

[0048] In the present case, the term flush can mean that a surface (upper side or at least one side surface) of the at least one mattress insert element and of the at least one mattress frame element form a common plane, in particular without offset. An exemplary embodiment is that the depth of the at least one recess is equal to the height of the at least one mattress insert element, so that the upper side of the at least one mattress insert element and the upper side of the at least one mattress frame element form a common plane.

[0049] In a further embodiment, the at least one mattress insert element is accommodated in the at least one recess in such a way that an outer side of the at least one mattress insert element is flush with an outer side of the at least one mattress frame element. The outer side of the mattress insert element and / or the mattress frame element can designate the side that forms part of the lying surface and / or faces a user. The outer side of the frame element can thereby designate that part of the mattress frame element which at least partially surrounds the recess and / or the mattress insert element along an outer circumference.

[0050] A flush finish between an outer side of the at least one mattress insert element and an outer side of the at least one mattress frame element can enable increased lying comfort by providing a flat lying surface for the user.

[0051] In a further embodiment, an outer side of the at least one mattress insert element and an outer side of the at least one mattress frame element together form the lying surface for the user.

[0052] In a further embodiment of the mattress core, the at least one mattress insert element is accommodated in the at least one recess in such a way that it is in contact with the at least one mattress frame element on all outer sides except an outer side of the at least one mattress insert element intended as a lying surface for the user.

[0053] In a further embodiment of the mattress core, the at least one mattress insert element is accommodated in the at least one recess so as to prevent it from slipping. Non-slip accommodation of the at least one mattress insert element in the at least one recess can enable the at least one mattress insert element to remain in the recess despite strong movements during the user's sleep, so that an ergonomic lying position can be enabled and a comfortable lying surface can be provided for the user.

[0054] In a further embodiment, the at least one mattress insert element has a compression hardness of around 2 kPa to around 8 kPa, for example around 2 kPa to around 4 kPa, in particular around 2.5 kPa to around 3.5 kPa, furthermore in particular around 3.2 kPa. Alternatively or additionally, the at least one mattress frame element has a compression hardness of around 2 kPa to around 8 kPa, for example around 2 kPa to around 4 kPa, in particular around 2.5 kPa to around 3.5 kPa, in particular around 3.2 kPa. Such compression hardnesses of the mattress insert element and / or mattress frame element can enable a user to lie comfortably. Particularly when used for a children's mattress, but not limited to this, such compression hardnesses can also prevent the head from tilting so that neck injuries can be efficiently avoided.

[0055] In a further embodiment, the at least one mattress insert element and / or the at least one mattress frame element comprises a hydrophobic, washable and / or boilable foam. In other words, the mattress insert element and / or the mattress frame element may comprise and / or be made of a hydrophobic, washable and / or boilable foam material. For example, the mattress core can be washable at at least 60° C., for example at least 70° C., at least 75° C., at least 80° C., at least 90° C. and / or at least 95° C., for example without being plastically deformed or substantially changed in its compression properties. Alternatively or additionally, the mattress core can be boiled at temperatures above 100° C., for example above 120° C., for example without being plastically deformed or significantly altered in its compression properties. Washing and / or boiling at such an elevated temperature can also disinfect the mattress core, which can further improve its hygiene.

[0056] By making the mattress core from hydrophobic foam, it can also be ensured that dirt and soiling can be easily removed. In addition, the drying time after washing can be reduced or completely eliminated.

[0057] The term foam is to be understood broadly in the present case and includes all foams that can be used for mattress cores. The foam can be a cold foam, in particular polyethane foam, but is not limited to this.

[0058] For example, the at least one mattress insert element and / or the at least one mattress frame element may comprise an open-pored foam material. In particular, this can increase breathability and improve the sleeping climate.

[0059] The term open-cell foam is to be understood broadly here and includes all foams whose cell walls are open. An open-cell foam can absorb liquids and sound like a sponge and / or provide excellent ventilation in an upholstered area. Exemplary foams are PUR foams, i.e. polyurethane foam or polyester foams. Open-pored foam can thus be characterized by the fact that a user can breathe through this foam, i.e. the foam can be permeable to both fresh air and exhaust air from a user. The open-pored foam may, for example, have a pore size of around 100 to 200 micrometers or more.

[0060] The use of an open-pored foam can lead to improved ventilation of the mattress core overall. It can also ensure that a user is supplied with sufficient oxygen, especially when lying / sleeping on their stomach. This can ensure a sufficient oxygen supply, especially for children or infants.

[0061] In a further embodiment, the at least one mattress frame element and the at least one mattress insert element comprise a plurality of air channels. In particular, the plurality of air channels can ensure a sufficient supply of oxygen to the user. Breathability can also be increased. In addition, dirt and impurities can be removed via the air channels. Drying time can also be reduced due to the improved ventilation via the air channels (also referred to as air ducts).

[0062] The term air channel is to be understood broadly in the present disclosure and includes all devices, openings, holes, passages and ducts in the at least one mattress frame element and / or the at least one mattress insert element through which air can flow. A channel in the context of the present disclosure may comprise a larger cross-section than a pore of a material of the mattress core. The plurality of air channels may have a rectangular, square, triangular, polygonal, circular, and oval cross-section and may each extend in a longitudinal direction through at least a portion of the mattress insert element and / or the mattress frame element. The cross-section of an air channel can be constant or variable in the longitudinal direction of the respective air channel. For example, at least a part of the air channels may have a converging or diverging shape, e.g. a cone shape, the radius of which continuously decreases or increases from an upper side or underside of the at least one mattress insert element and / or the at least one mattress frame element.

[0063] The air channels may have identical shapes or different shapes in the at least one mattress frame element and / or the at least one mattress insert element. For example, the air channels of the mattress insert element and / or the mattress frame element may have a round cross-section, for example with a radius of around 0.1 cm to around 5 cm, in particular from around 0.2 cm to around 3 cm, for example from around 0.5 cm to 1.5 cm. The air channels can extend vertically or in a vertical direction, inclined to the vertical direction and / or in a stepped manner through the at least one mattress frame element and / or the at least one mattress insert element.

[0064] The air channels can extend from the outside of the mattress insert element and / or mattress frame element through at least part of the mattress insert element and / or mattress frame element. In particular, the air channels can extend completely through the mattress insert element and / or mattress frame element.

[0065] A vertical extension or direction of extension of the air channels may comprise the air channels extending from the top of the at least one mattress insert member and / or the at least one mattress frame member in a vertical direction. In other words, the vertical extension direction may comprise only a vertical component. An inclined extension may, for example, mean that a longitudinal direction of the air channels may be inclined by an inclination angle a of about 5° to 90°, for example about 10° to 45°, with respect to the vertical. In other words, the inclined direction of extension can comprise at least one vertical and at least one horizontal component. A stepped extension may further comprise that the plurality of air channels comprises both at least one vertical region, i.e. a region extending perpendicular to the upper side and / or lower side of the at least one mattress insert element and / or at least one mattress frame element, and at least one horizontal region, i.e. a region extending parallel to the upper side and / or lower side of the at least one mattress insert element and / or at least one mattress frame element. In other words, each air channel may comprise a plurality of horizontal and vertical regions. Alternatively or additionally, the regions of the stepped extension of the plurality of air channels may also be inclined by an angle of inclination.

[0066] The air channels can extend completely through the at least one mattress insert element and / or at least one mattress frame element. A cross-sectional size, such as a radius of the cross-section, of the air channels can vary or remain constant over the plurality of air channels. For example, a cross-section can increase or decrease from the outside, such as from the sides, the head end and / or the foot end, in the direction of a center or a middle of the mattress core. In particular, when the cross-section increases, a sufficient supply of oxygen to the user can be ensured via the air channels.

[0067] An area ratio of the sum of the cross-sectional areas of the air channels to the total area of the lying surface, of the at least one mattress frame element and / or of the at least one mattress insert element can be approximately 10% to 50%, in particular approximately 15% to approximately 25%, but is not limited to this. The plurality of air channels may be arranged on the entire upper side and / or underside of the at least one mattress insert element, or only in regions of the at least one mattress insert element and / or mattress frame element. For example, the plurality of air channels may be arranged only in a center portion of the at least one mattress insert element and / or mattress frame element and not in the head portion and / or foot portion. Alternatively or additionally, a plurality of air channels may also be arranged in a head portion and / or foot portion.

[0068] For example, the plurality of air channels in the head section and / or foot section can correspond to the plurality of air channels in the at least one mattress frame element and / or at least one mattress insert element. Alternatively or additionally, however, the plurality of air channels in the head section and / or foot section may also deviate completely from the plurality of air channels in the central section of the at least one mattress insert element. Exemplary deviations can be the shape, the row arrangement, the radius or the number of air channels per row.

[0069] Furthermore, the air channels may be arranged on the entire upper side and / or underside of the at least one mattress frame element, or only in the exposed surface / outside of the recess of the at least one mattress frame element. At this point, it should be noted that the surface / upper side / outer side of the at least one mattress frame element exposed by the recess can also be interpreted / conceived as the upper side or part of the outer side of the at least one mattress frame element, as used above. For example, air channels can be provided in the mattress frame element only in the recess. Alternatively or additionally, no air channels may be provided in the side regions and / or the end regions of the mattress frame element, which may, for example, surround the recess and / or the mattress insert element.

[0070] The air channels can be distributed in any desired arrangement over the lying surface or a part thereof. In particular, the air channels can be arranged in several rows, whereby in each row several air channels can be arranged one behind the other in the transverse direction of the mattress core and several rows can be arranged parallel to each other in the longitudinal direction. Several rows of air channels can therefore extend parallel to the end faces of the mattress core and parallel to each other. Alternatively, the rows can be tilted in relation to each other.

[0071] Each row of air channels can comprise an identical or different number of air channels. By way of example, each row may comprise around 5 to around 25, approximately around 10 air channels, whereby around 5 to 30, approximately 20 rows may be formed at a distance from one another in the longitudinal direction of the mattress core.

[0072] The air channels of the at least one mattress insert element and / or at least one mattress frame element can be arranged in such a way that they provide a common channel in pairs when the mattress insert element is arranged in the recess. In other words, an air channel of the mattress insert element may merge and / or open into an air channel of the mattress frame element when the mattress insert element is arranged in the recess. In other words, the plurality of air channels of the at least one mattress frame element and of the at least one mattress insert element can form a common channel in pairs.

[0073] The air channels of the mattress frame element and the mattress insert element, which form a common, in particular continuous, channel in pairs, can extend parallel to each other and in particular have identical directions of extension. Curved and / or bent runs are also conceivable

[0074] The air channels can lead to improved ventilation of the mattress core. In addition, the air channels can ensure that the user is supplied with sufficient oxygen, especially when lying / sleeping on their stomach.

[0075] In a further embodiment, the plurality of air channels of the at least one mattress frame element and the at least one mattress insert element are arranged in rows and parallel to each other. An arrangement in rows and parallel to one another can enable improved ventilation of the mattress core to be provided and ensure that the users are supplied with sufficient oxygen, in particular when lying / sleeping on their stomachs. The drainage of fluids can also be improved and drying time can be reduced.

[0076] In a further embodiment, the plurality of air channels of the at least one mattress frame element and the at least one mattress insert element extend completely through the at least one mattress frame element and the at least one mattress insert element. This can further increase the supply of fresh air and the removal of used air.

[0077] In a further embodiment, the plurality of air channels of the at least one mattress frame element and the at least one mattress insert element each have a radius of around 0.1 cm to around 5 cm, in particular from around 0.2 cm to around 3 cm, for example from around 0.5 cm to 1.5 cm.

[0078] In a further embodiment, the at least one mattress insert element comprises a head section, a foot section and a middle section, wherein the plurality of air channels are arranged only in the middle section. The head section and the foot section can each be arranged on end faces of the mattress core.

[0079] The head section can be formed in such a way that it serves as a resting surface for the user's head. The head section may be identical to or different from the foot section. The head section and / or the foot section may have an area which is approximately 10 to 40%, in particular 12.5%, of the total area of the at least one mattress insert element.

[0080] The term middle section can include all areas of a mattress or mattress core that are located between the head section and the foot section in the longitudinal direction of the mattress core. The middle section can be directly adjacent to the head section and / or foot section. The middle section can serve as a lying surface or support surface for a user's hips or stomach.

[0081] A further aspect of the present disclosure relates to the use of a mattress insert element, as described above and below, for a mattress core of a mattress and / or children's mattress. A further aspect of the present disclosure relates to the use of a mattress core, as described above and below, for a mattress and / or a children's mattress.

[0082] Another aspect of the present disclosure relates to a mattress and / or a children's mattress comprising a mattress core as described above and below. The mattress comprises a cover or mattress cover, wherein the cover completely surrounds and / or encloses the at least one mattress frame element and the at least one mattress insert element.

[0083] The term cover is to be understood broadly in the present case and includes all devices that completely or at least partially enclose a mattress core. The cover can be formed as a mattress cover or mattress protector cover or designate such a cover. The terms cover, protective mattress cover and mattress cover can be used synonymously in the following. The cover may have a top side, a bottom side and / or at least one side surface. The top side and / or the underside of the cover can each be dimensioned as a lying surface for a user.

[0084] In addition or as an alternative to the cover, the mattress core may comprise a stocking or sock. The stocking can be formed as a close-fitting, adjacent and / or in contact with an outer surface of the mattress core, the mattress insert element and / or the mattress frame element, which at least partially, in particular completely, surrounds and / or encloses the at least one mattress frame element and the at least one mattress insert element. The stocking can be made of an elastic and stretchable fabric based on warp-knitted fabric or special fabric weaves with ribs, so-called tricot weaves. The stocking can, for example, be formed with stretchable stitches and / or in a grid or net structure. Alternatively, the stocking can be formed from an elastic and stretchable mesh fabric, comprising square and / or rectangular meshes. However, differently shaped cut-outs are conceivable. Furthermore, the fabric may be formed from natural fibers and / or non-natural fibers. Optionally, a closure and / or an opening can be provided in the stocking, for example so that the mattress insert element can be removed.

[0085] In a further embodiment, the cover comprises a cover fabric with at least one upper layer and one lower layer, wherein the upper layer and the lower layer are arranged at least partially one above the other, wherein at least the upper layer of the cover fabric is formed from a weft-knitted fabric, for example a 3D weft-knitted fabric, and wherein a plurality of cover fabric recesses are formed at least on an outer side of the upper layer facing away from the lower layer.

[0086] The cover fabric can be manufactured and / or formed entirely from a weft-knitted fabrics and / or 3D spacer fabric. In a two-layer design of the cover fabric, the cover fabric has an upper layer and a lower layer, whereby the upper and lower layers can be completely or at least partially, for example selectively, connected and / or knitted together with threads from the upper and / or lower layer. Alternatively or additionally, connecting threads can be used, which can connect the upper and lower layers. If the cover fabric is made up of three or more layers, the cover fabric can have one or more middle layers of the cover fabric in addition to the top layer and the bottom layer, which can be connected and / or knitted to the top and / or bottom layer. Alternatively or additionally, connecting threads can also be used here, which can connect at least two layers of the cover fabric, such as the top layer, the bottom layer and / or one or more middle layers.

[0087] The cover or cover fabric can be produced in a simple manner, for example on a large circular knitting machine operating according to the so-called 3-way technique with a high throughput in terms of time and thus high economic efficiency. In the context of the present disclosure, cover fabric recesses formed at least on the outside of the upper layer of the cover fabric are to be strictly distinguished from stitches from which the cover fabric, the lower layer and / or the upper layer can be formed. Compared to the meshes, the cover fabric recesses can be larger in size, for example the cover fabric recesses or recesses of the cover can have a cross-sectional area which can be many times (about 5 to 100 times or more) larger than an average cross-sectional area of the meshes of the cover fabric.

[0088] The term weft-knitted fabrics is to be understood broadly herein and includes a knitted fabric that differs in several respects from warp-knitted fabrics regularly used for covers. For example, warp-knitted fabrics are regularly produced on so-called warp knitting machines, while weft-knitted fabrics are usually produced on a knitting machine. In the production of warp-knitted fabrics, stitches are strung around a warp (hence the term warp knitting machine). The stitches are lined up vertically. The warp-knitted fabrics are stable, rigid, inelastic and non-stretchable due to this arrangement of the stitches around a warp. In contrast, the stitches of a weft-knitted fabrics are not strung together around a warp, but the stitches as such can be elastic and stretchable, both horizontally and vertically. Compared to a warp-knitted fabric, a weft-knitted fabric can therefore be characterized in particular by the fact that it is elastic and stretchable in both the horizontal and vertical directions, whereas a warp-knitted fabric is completely inelastic and non-stretchable in comparison. Warp-knitted fabrics are therefore static and rigid fabric structures that have little to no elasticity. Furthermore, warp-knitted fabrics have a rigid, hard and plastic-like feel, whereas knitted spacer fabrics can have a textile or fabric-like and soft feel. Furthermore, fiber ends regularly protrude from the surface of a warp-knitted fabric, resulting in a scratchy and rough feel. In contrast, weft-knitted fabrics generally have a much softer feel, which is sometimes caused by the increased elastic properties of the warp-knitted fabrics and a much finer finish compared to warp-knitted fabrics.

[0089] According to an embodiment, the cover and / or a cover fabric of the mattress cover is at least partially formed from a spacer textile, in particular a weft-knitted fabrics and / or a warp-knitted fabrics. Such spacer textiles can advantageously enable air and moisture exchange.

[0090] According to an embodiment, the cover comprises a cover fabric with at least one upper layer and one lower layer, wherein the upper layer and the lower layer are arranged at least partially one above the other, and wherein at least the upper layer of the cover fabric is formed from a weft-knitted fabric, for example a 3D weft-knitted fabric, and wherein a plurality of recesses are formed at least on an outer side of the upper layer facing away from the lower layer.

[0091] The lower layer can be essentially closed and / or knitted closed and the recesses can form openings or apertures in the upper layer. The recesses can thus be limited by the bottom layer. Between the upper and lower layers, the recesses can optionally be at least partially delimited by spacer threads. A contour of the recesses on the upper layer can be defined by knitting stitches of the 3D weft-knitted fabrics on the upper layer.

[0092] The mattress cover therefore utilizes the advantages of a weft-knitted fabric comprising, for example, a spacer structure with stitches, for example at least partially made of knitted monofilament or multifilament spacer threads.

[0093] Furthermore, the recesses formed on the outside allow for increased air circulation, increased breathability and / or increased moisture removal.

[0094] The recesses can be configured to be open to the outside, i.e. in the direction of the user, and / or have a cross-section that is open to the outside. The recesses can thus designate openings. The recesses can generally be advantageous in terms of air exchange and moisture removal as well as the compensation of temperature fluctuations. The recesses can also provide increased elasticity, which can offer a user a soft feel and also allow the cover to adapt optimally to the user or head lying on it without being impaired by brittle warp-knitted fabrics, which are often noticeable in warp-knitted fabrics.

[0095] The recesses formed at least on the outside of the top layer may further provide and / or form a mesh structure of the cover fabric. In other words, the cover fabric may comprise a mesh structure, such as a honeycomb-like mesh structure, with the recesses, at least on the outer side.

[0096] The recesses of the mesh structure and / or the cover fabric may, for example, be arranged in a regular pattern on the outside of the cover fabric. In other words, the recesses can be arranged regularly and / or in a regular pattern. However, an irregular arrangement, for example one that forms a pattern, is also conceivable.

[0097] The recesses, such as the outwardly open recesses, can be variable in terms of their geometry, for example round, square, oval, polygonal, elliptical or formed in any other way with regard to their open cross-section.

[0098] For example, the recesses can be formed in a honeycomb shape. Alternatively or additionally, the recesses can have a round, rounded, square, rectangular, polygonal, triangular, elliptical, oval and / or polygon-shaped cross-section.

[0099] According to an embodiment, the upper layer and / or the lower layer of the cover fabric is formed at least partially from a natural fiber.

[0100] The use of natural fibers, which can be contained and / or knitted in the weft-knitted fabrics, for example, can increase the sustainability and / or ecology of the mattress cover (hereinafter also referred to as “cover”), for example because the natural fibers can be obtained from renewable raw materials. Natural fibers can also be characterized by increased resilience and / or durability. In addition, natural fibers can result in a pleasant, soft feel for the user. Natural fibers can also be characterized by increased skin compatibility, breathability and / or odor neutrality. In addition, natural fibers can enable cost-efficient production of the mattress cover.

[0101] According to an embodiment, the natural fiber of the cover or mattress cover or the associated cover fabric is an animal hair fiber, a wool fiber, cotton fiber, a hemp fiber, a eucalyptus fiber, a bamboo fiber, a linen fiber, a wood fiber, a viscose fiber, a flax fiber, a silk fiber, a plant fiber or a combination thereof. Compared to synthetic fibres, such natural fibres can be characterized by increased sustainability, odour neutrality, skin compatibility, durability and / or robustness.

[0102] According to an embodiment, the top layer, the bottom layer and / or one or more middle layers of the cover fabric have a weight proportion of natural fibers, for example in relation to the respective layer or the entire cover fabric, of 2% to 99%, for example at least 5%, at least 10%, at least 15%, at least 20% and / or at least 25%. At least 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70% or 75% natural fibers are also conceivable.

[0103] According to an embodiment, the proportion, for example the proportion by weight and / or the proportion by volume, of natural fibers, for example in relation to the respective layer or the entire cover fabric, in the upper layer is greater than the proportion, for example the proportion by weight and / or the proportion by volume, of natural fibers in the lower and / or one or more middle layers. For example, the proportion in the upper layer can be at least twice as large as the corresponding proportion of natural fibers in the lower and / or one or more middle layers.

[0104] According to an embodiment, the top layer consists essentially and / or almost completely, for example completely, of natural fibers and the bottom layer, and optionally one or more middle layers, consist essentially and / or almost completely, for example completely, of synthetic fibers.

[0105] According to an embodiment, the upper layer and / or the lower layer of the cover fabric is formed at least partially from textured, twisted yarn, in particular multifilament yarn, for example polyester yarn, polyethylene yarn, polyamide yarn, polyethylene yarn and / or polyamide yarn. This can provide a soft and pleasant feel.

[0106] According to an embodiment, the upper layer and / or the lower layer of the cover fabric is formed at least partially from monofilament yarn, in particular polyester yarn, smooth polyester yarn, polyethylene yarn, smooth polyethylene yarn, polyamide yarn, and / or smooth polyamide yarn. If the cover fabric is made of monofilament yarn on the underside of the cover fabric facing the mattress core or the pillow core, removal or insertion of the mattress core or pillow core can be facilitated.

[0107] For example, the cover fabric can be formed from weft-knitted fabrics in at least two layers with an upper layer forming the outer side and a fabric layer forming an inner or lower layer, preferably made of polyester fiber fabric, polyethylene fiber fabric and / or polyamide fiber fabric.

[0108] The inner or lower layer can, for example, be a smooth fabric layer, which can also be jacquardized and / or provided with a pattern, for example, on which the upper layer of the weft-knitted fabrics made of textured, twisted yarn, in particular multifilament yarn, can be built up towards the outside.

[0109] According to an embodiment, the cover fabric further comprises a middle layer which is at least selectively and / or at least partially knitted with the top layer and / or the bottom layer. The middle layer can serve to volumize the cover fabric. This can also increase lying comfort.

[0110] According to an embodiment, the middle layer is formed at least partially from a monofilament yarn, in particular polyester yarn, smooth polyester yarn, polyethylene yarn, smooth polyethylene yarn, polyamide yarn, and / or smooth polyamide yarn.

[0111] According to an embodiment, the middle layer is formed at least partially from a multifilament yarn, for example a textured, twisted multifilament yarn, for example polyester yarn, polyethylene yarn, polyamide yarn, polyethylene yarn and / or polyamide yarn.

[0112] According to an embodiment, the middle layer is formed at least partially from a natural fiber. This offers the advantages explained above with regard to natural fibers.

[0113] According to an embodiment, the recesses extend at least substantially over a thickness of the upper layer and, if applicable, the middle layer. In particular, the recesses can extend completely through the upper layer, so that the recesses can form and / or represent openings in the upper layer.

[0114] The recesses can, for example, extend at least essentially over the entire thickness of the upper layer, i.e. from the outer side to the inner or lower layer or close to it, for example to enable optimum air conditioning with regard to the exchange of air and moisture between the two sides of the cover fabric. In addition, the depth of the recess can increase the softness of the upper layer of weft-knitted fabrics, which can result in an improved feel.

[0115] The cover fabric can also be formed in three layers with a middle layer, such as a layer knitted with the top layer, with a monofilament yarn as filler. In this way, stabilization and a haptically often desired voluminization of the weft-knitted fabrics can be achieved while maintaining high air and moisture permeability. The monofilament yarn can, for example, be formed at least partially from polyester, polyamide and / or polyethylene, but other synthetic fibers can also be used for this purpose.

[0116] In order to give the outward-facing surface or outer side of the weft-knitted fabrics a particularly smooth and pleasant feel, the surface or outer side surrounding the recesses can be formed from finer knitted stitches compared to the other areas of the outer side.

[0117] According to an embodiment, the upper layer has a weight proportion of 50% to 70%, in particular 55% to 60%, of the cover fabric. Studies have shown that this weight proportion is particularly advantageous in terms of comfort and microclimatization.

[0118] According to an embodiment, the bottom layer has a weight proportion of 20% to 30%, in particular 25% to 30%, of the cover fabric.

[0119] According to an embodiment, a middle layer has a weight proportion of 10% to 20%, in particular 15% to 20%, of the cover fabric.

[0120] When using a filler, optimum results in terms of air permeability, stabilization and volumization were determined with a weight proportion of 10% to 20%, in particular 15% to 20%, of the middle layer in the cover fabric.

[0121] According to an embodiment, the cover fabric has a weight of 250 g / m2-300 g / m2. This allows the cover fabric to have the required durability and at the same time be easy to handle in terms of its weight during manufacture and use.

[0122] According to an embodiment, the cover fabric is rubberized, coated and / or provided with latex on at least one side, for example the outer side, the inner side, the underside and / or the upper side, for example to prevent moisture and / or water from penetrating.

[0123] According to an embodiment, the cover fabric is formed identically on all sides. In other words, the mattress cover can be formed the same on all sides, i.e. on the top side, on the underside and on the longitudinal and transverse sides, if present, although it is also conceivable in principle to form different sides of the cover differently.

[0124] The identical design of all sides can enable particularly simple manufacture, whereby the high breathability of the cover fabric also means that a ventilation strip on the transverse and longitudinal sides, which is often found in known covers, especially mattress covers, can be dispensed with.

[0125] According to an embodiment, the mattress, the mattress cover or the cover comprises an at least partially circumferential closure, in particular a zipper, which can be opened or closed for inserting or removing a mattress core.

[0126] Furthermore, handles can be sewn onto the mattress cover for easier handling of a mattress covered with the mattress cover and / or the reclining furniture.

[0127] The cover or mattress cover can also be washable, for example at a temperature of at least 30° C., at least 40° C., at least 50° C., at least 60° C., at least 70° C., at least 80° C. or at least 90° C.

[0128] A further aspect of the disclosure relates to the use of a mattress core, as described above and below, for a mattress, a reclining furniture and / or a children's mattress.

[0129] A further aspect of the disclosure relates to the use of a mattress, as described above and below, as a children's mattress.

[0130] Further features, advantages and possible applications of the disclosure are apparent from the following description of the exemplary embodiments and figures.BRIEF DESCRIPTION OF THE DRAWINGS

[0131] The figures are only schematic and not true to scale. If the same reference signs are given in different figures in the following description, these denote identical, similarly acting, similar or similarly functioning elements. They show

[0132] FIG. 1 a schematic top view of an embodiment of a mattress core according to the disclosure;

[0133] FIG. 2 a perspective view of an embodiment of a mattress core according to the disclosure;

[0134] FIG. 3 a perspective view of an embodiment of a mattress core according to the disclosure with the mattress insert element removed;

[0135] FIG. 4 a schematic sectional view of an embodiment of a mattress core according to the disclosure;

[0136] FIG. 5 a schematic representation of a first embodiment of an air channel;

[0137] FIG. 6 a schematic representation of a second embodiment of an air channel;

[0138] FIG. 7 a schematic view of a mattress with a cover;

[0139] FIG. 8 a perspective view of a mattress with a cover fitted to a mattress core;

[0140] FIG. 9 a highly simplified sectional top view of an outer side of the cover;

[0141] FIG. 10 a sectional schematic cross-sectional view through a cover fabric of the cover; and

[0142] FIG. 11 a detailed view of a closure of a cover.DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

[0143] FIG. 1 shows a schematic top view of an embodiment of a mattress core according to the disclosure.

[0144] The mattress core 10 comprises a mattress frame element 11 and a mattress insert element 12, wherein the mattress insert element 12 is removably arranged within or in a recess 30 of the mattress frame element 11. The mattress frame element 11 and a mattress insert element 12 have a rectangular base and / or a cuboid shape. Here, the mattress insert element 12 is arranged in the recess 30 of the mattress frame element 11 in such a way that the mattress insert element 12 is in direct contact or touching contact with its underside and the four side surfaces with the exposed surface or outer surface (also referred to as the outer side) of the recess 30 and the four side surfaces of the recess 30 of the mattress frame element 11. The mattress frame element 11 has a length L and a width B. The mattress insert element 12 has a length I dimensioned in the longitudinal direction 7 and a width b dimensioned in the transverse direction 5, orthogonal to the longitudinal direction 7 and orthogonal to the vertical direction. Similarly, the mattress frame element has a length L dimensioned in the longitudinal direction 7 and a width B dimensioned in the transverse direction.

[0145] The width / length ratio B / L of the mattress frame element 11 can be approximately 50%. The width / length ratio b / I of the mattress insert element 12 can be approximately 40%. The width / width ratio b / B is approximately 70% and the length / length ratio I / L is approximately 85%.

[0146] The mattress insert element 12 and the mattress frame element 11 both have a plurality of air channels 13. The plurality of air channels 13 all have the same radius and are arranged in 20 parallel rows of 10 air channels each. The parallel rows have a straight shape and the plurality of air channels 13 are also arranged parallel to each other.

[0147] The mattress insert element 12 comprises a head section 14, a foot section 15 and a middle section 16, with the plurality of air channels being provided only in the middle section. The head section 14 as well as the foot section 15 both do not have a plurality of air channels. The head and foot sections are identical and each occupy approximately 12.5% of the total surface area of the mattress insert element.

[0148] The mattress frame element 11 forms a step edge that completely surrounds the recess 30 and / or the mattress insert element 12 arranged therein.

[0149] FIG. 2 shows a perspective view of an embodiment of a mattress core 10 according to the disclosure. Unless otherwise described, the mattress core 10 of FIG. 2 has the same elements and features as the mattress core 10 of FIG. 1.

[0150] In FIG. 2, the mattress insert element 12 is arranged flush in the recess 30 of the mattress frame element 11. Flush here means that both the upper side of the mattress frame element 11 and the upper side of the mattress insert element s12 provide a common plane, which also provides the lying surface of the mattress core.

[0151] The common plane does not comprise any sharp transitions, i.e. elevations or edges, between the mattress insert element 12 and the mattress frame element 11.

[0152] FIG. 3 shows a perspective view of an embodiment of a mattress core 10 according to the disclosure with the mattress insert element removed. Unless otherwise described, the mattress core 10 of FIG. 3 comprises the same elements and features as the mattress core 10 of FIGS. 1 and 2.

[0153] The recess 30 has an exposed surface 31 or outer side 31 and side surfaces 31, in particular four side surfaces. The recess 30 extends into the at least one mattress frame element 11 from the outside of the mattress core or the lying surface into the interior of the mattress frame element 11.

[0154] The mattress insert element 12 has a height h, which may correspond to a depth of the recess 30. The height / length ratio h / l of the mattress insert element 12 is approximately 0.02% and the height / width ratio h / b of the mattress insert element 12 is 0.06%. The recess 30 has a width C.

[0155] The recess 30 and the mattress insert element can have corresponding shapes and geometries such that the mattress insert element 12 can be held in the recess 30 without slipping. In particular, the recess 30 and the mattress insert element 12 may have complementary geometries.

[0156] FIG. 4 shows a schematic sectional view of an embodiment of a mattress core according to the disclosure. Unless otherwise described, the mattress core 10 of FIG. 4 comprises the same elements and features as the mattress core 10 of FIGS. 1 to 3.

[0157] The mattress frame element 11 has a top side 41, a bottom side 42 and four side surfaces 43 as well as a height H. The recess 30 has a depth T and a length K. The height h of the mattress insert element 12 and the depth of the recess 30 are identical, so that a common plane is formed by the mattress insert element 12 and the mattress frame element 11. A plurality of air openings 13 or air channels extend completely through the mattress insert element 12 and the mattress frame element 11 in a vertical direction, in particular orthogonally to the longitudinal direction 7 and to the transverse direction 5 of the mattress core 10.

[0158] The air channels 13 of the mattress insert element 12 and the air channels 13 of the mattress frame element 11 form a common duct in pairs. The air openings or channels 13 all have a constant radius over their length.

[0159] As can be seen in FIGS. 1 to 4, the air channels 13 can have a round cross-section and run parallel to the vertical direction. However, the air channels 13 can also be inclined to the vertical and / or have a different cross-section, as described in detail above.

[0160] FIG. 5 shows a schematic cross-sectional view of a first embodiment of an air channel 13 of a mattress core 10. Unless otherwise described, the mattress core 10 of FIG. 5 has the same elements and features as the mattress core 10 of FIGS. 1 to 4.

[0161] The air channel 13 is an inclined air channel in the at least one mattress insert element 12 and / or mattress frame element 11, which is inclined by the angle of inclination a. The angle of inclination a is 45°.

[0162] FIG. 6 shows a schematic cross-sectional view of a second embodiment of an air channel 13 of a mattress core 10. Unless otherwise described, the mattress core 10 of FIG. 6 has the same elements and features as the mattress core 10 of FIGS. 1 to 5.

[0163] The air channel 13 is a stepped air channel in the at least one mattress element 12 and / or mattress frame element 11. The stepped air channel 13 has a vertical or vertical section 610 and a horizontal or horizontal section 611. The vertical section 610 extends vertically perpendicular to the upper side and underside of the mattress insert element 12 and / or mattress frame element 11. The horizontal section extends horizontally or parallel to the upper side and underside of the mattress insert element 12 and / or mattress frame element 11.

[0164] FIG. 7 shows a schematic view of a mattress 500 comprising a mattress core 10, such as a mattress core 10 of FIGS. 1 to 6.

[0165] Furthermore, the mattress 500 has a cover 61 which completely surrounds the mattress core 10.

[0166] The cover 61 is closed by means of a fully circumferential closure 62, in particular a zipper, which is secured against unintentional opening. The full-circumference closure 62 is arranged on the underside of the mattress core or of the cover 61.

[0167] FIG. 8 shows a perspective view of a mattress 500 with a cover 61 fitted to a mattress core 10.

[0168] The exemplary cover 61 or a mattress cover 61 (or a mattress protector cover 61) is shown in a state stretched over a mattress core 10, wherein the cover 61 forms a first lying surface on an upper side 71 and a second lying surface on an opposite lower side 72 for a user sleeping thereon.

[0169] The cover 61 is formed all around from the same cover fabric 70, with lateral transverse surfaces 73 and longitudinal surfaces 74 also merging into the top side 71 and bottom side 72, optionally without seams. Deviating from this, however, in other embodiments, the surfaces of the cover fabric 70 can also be separated by seams and, if necessary, a piping tape.

[0170] A circumferential closure 62 in the form of a zipper is sewn into the mattress cover 61 (or protective mattress cover 61) on the transverse surfaces 73 and longitudinal sides 74 for inserting and removing the mattress core 10. In addition, a plurality of handles 75 are provided on the lateral longitudinal surfaces 74 for lifting the mattress core 10 covered by the mattress cover 61 (or protective mattress cover 61), of which only one handle 75 is shown as an example.

[0171] As can be seen in a section X in FIG. 8, which is representative of the entire surface of the mattress cover 61 (or mattress protector cover 61), and in FIGS. 9 and 10, the cover fabric 70 is formed with a weft-knitted fabric 76, such as a 3D weft-knitted fabric, up to its outer side 77.

[0172] The cover fabric 70 has a honeycomb-like mesh structure with outwardly open recesses 78 in a regular, finely structured arrangement. The recesses 78 preferably have a round, rounded, elliptical and / or oval cross-section on the outside, which in the unstretched state can be dimensioned, for example, 2 mm to 4 mm in width and approximately 3 mm to 5 mm in length.

[0173] The material webs 81 of weft-knitted fabrics 76 located between the recesses 78, which are arranged offset and regular to one another, can be at least approximately the same width.

[0174] In the present case, the cover fabric 70 of the cover 61 is a three-ply weft-knitted fabric with an upper layer 91 forming the outer side 77, a middle layer 92 which also forms the weft-knitted fabric 76 and is knitted with the upper layer 91, and an inner or lower layer 93 which is knitted with the upper layer 91 and / or the middle layer 92.

[0175] The upper layer 91 may comprise a monofilament yarn, such as a smooth monofilament yarn, or a multifilament yarn, such as a textured, twisted multifilament yarn. Similarly, the bottom layer 93 may also comprise a monofilament yarn, such as a smooth monofilament yarn, or a multifilament yarn, such as a textured, twisted multifilament yarn. Similarly, the middle layer 92 may be formed at least in part from monofilament yarn or multifilament yarn.

[0176] One or more of the top layer 91, the middle layer 92 and the bottom layer 93 further comprise natural fibers and / or are at least partially formed from natural fibers, as described above. The natural fibers may be, for example, animal hair fibers, wool fibers, cotton fibers, hemp fibers, eucalyptus fibers, bamboo fibers, linen fibers, wood fibers, viscose fibers, flax fibers, silk fibers, plant fibers or a combination thereof. Compared to synthetic fibres, such natural fibres can be characterized by increased sustainability, odour neutrality, skin compatibility, durability and / or robustness.

[0177] The upper layer 91 also has a fine-knit structure 94 on the outer side 77, which gives the surface a soft feel.

[0178] With regard to the thickness, the upper layer 91 in the advantageous embodiment shown is dimensioned such that it takes up at least 70% to 80% of the total thickness of the cover fabric 70 in order to utilize the microclimatic advantages of the weft-knitted fabrics 76 to the greatest possible extent.

[0179] In order to enable the greatest possible air circulation and optimum moisture removal to the outer side 77, the honeycomb-like recesses 78 extend essentially over the thickness of the upper layer 91 and the middle layer 92 down to adjacent to the lower layer 93, so that the cover fabric also has a high degree of flexibility and stretchability in width due to the recesses 78. The elasticity in the height causes a softness which can be defined by the filler of the middle layer 91 depending on the desired degree of softness.

[0180] It is understood that, depending on the application, the cover fabric 70 can be produced using all known spacer knitting processes, for example on circular knitting machines, as well as all known finishing processes, such as a washing, bleaching and shrinking process following the knitting process.

[0181] FIG. 11 shows a detailed view of a closure of a cover. The fastener 62 is a fastener secured against unintentional opening. This fastener is characterized by the fact that it is a zipper whose slider 121 has no zipper or tag.

[0182] In addition, it is noted that the terms “comprising” and “comprising” do not exclude other elements or steps and the indefinite articles “one” or “a” do not exclude a plurality. Furthermore, it is noted that features or steps that have been described with reference to one of the above exemplary embodiments may also be used in combination with other features or steps of other exemplary embodiments described above.

Claims

1. A mattress core for reclining furniture, in including a children's mattress, comprising:at least one mattress frame element; andat least one mattress insert element,wherein the at least one mattress frame element includes at least one recess on at least a partial area of an outer surface of the mattress core formed as a lying surface for a user, andwherein the at least one mattress insert element is arranged at least partially removably in the at least one recess of the at least one mattress frame element.

2. The mattress core according to claim 1,wherein the at least one recess is formed to correspond to a geometry of the at least one mattress insertion element such that the at least one mattress insertion element is at least partially received in the at least one recess.

3. The mattress core according to claim 1,wherein the at least one mattress insert element is insertable into and / or removable from the at least one recess of the at least one mattress frame element via the outer surface of the mattress core formed as a lying surface for the user.

4. The mattress core according to claim 1,wherein the at least one recess is configured such that the at least one mattress frame element surrounds and / or encloses the mattress insert element at least along part of an outer circumference.

5. The mattress core according to claim 1,wherein the at least one mattress insert element is accommodatable in a close-fitting and / or flush manner in the at least one recess.

6. The mattress core according to claim 1,wherein the at least one mattress insert element is accommodatable and / or arrangeable in the at least one recess such that an outer side of the at least one mattress insert element is flush with an outer side of the at least one mattress frame element.

7. The mattress core according to one of the claim 1,wherein an outer side of the at least one mattress insert element and an outer side of the at least one mattress frame element together form the lying surface for the user.

8. The mattress core according to claim 1,wherein the at least one mattress insert element is accommodated in the at least one recess such that it is in contact with the at least one mattress frame element on all outer sides except an outer side of the at least one mattress insert element provided as part of a lying surface for the user.

9. The mattress core according to claim 1,wherein the at least one mattress insert element is received in the at least one recess to prevent slipping.

10. The mattress core according to claim 1,wherein the at least one mattress insert element includes a compression hardness of approximately 2 kPa to 8 kPa.

11. The mattress core according to claim 1,wherein the at least one mattress insert element including a hydrophobic, washable and / or boilable foam material.

12. The mattress core according to claim 1,wherein at least one of or both the at least one mattress insert element and the at least one mattress frame element includes an open-pored foam material.

13. The mattress core according to claim 1,wherein at least one of or both the at least one mattress frame element and the at least one mattress insert element includes a plurality of air channels.

14. The mattress core according to claim 13,wherein the plurality of air channels of at least one of or both the at least one mattress frame element and the at least one mattress insert element are arranged in several rows.

15. The mattress core according to claim 13,wherein the plurality of air channels of the at least one mattress frame element and the at least one mattress insert element are arranged such that they form a common channel in pairs.

16. The mattress core according to claim 13,wherein the air channels of the at least one mattress frame element and of the at least one mattress insert element each extend completely through the at least one mattress frame element and / or the at least one mattress insert element.

17. The mattress core according to claim 13,wherein the plurality of air channels of the at least one mattress frame element and / or the at least one mattress insert element each have a radius of approximately 0.1 cm to approximately 5 cm.

18. The mattress core according to claim 13,wherein the at least one mattress insert element includes a head section, a foot section and a middle section,wherein the plurality of air channels are arranged only in the middle section.

19. A mattress comprising:a mattress core according to one claim 1; anda cover,wherein the cover completely surrounds the at least one mattress frame element and the at least one mattress insert element.

20. The mattress according to claim 19,wherein the cover includes a cover fabric with at least an upper layer and a lower layer,wherein the upper layer and the lower layer are arranged at least partially one above the other;wherein at least the upper layer of the cover fabric is formed from a weft-knitted fabric, andwherein at least on an outer side of the upper layer facing away from the lower layer, a plurality of cover fabric recesses are formed.

21. The mattress according to claim 19,wherein the cover includes a closure which is secured against unintentional opening.22-23. (canceled)24. The mattress core according to claim 1,wherein the at least one recess is formed to correspond to a geometry of the at least one mattress insertion element such that the at least one mattress insertion element is substantially completely received in the at least one recess.

25. The mattress core according to claim 1,wherein the at least one recess is configured such that the at least one mattress frame element surrounds and / or encloses the mattress insert element completely along an outer circumference.

26. The mattress core according to claim 1,wherein the at least one mattress insert element includes a compression hardness of approximately 2.5 kPa to 3.5 kPa.

27. The mattress core according to claim 13,wherein the plurality of air channels of at least one of or both the at least one mattress frame element and the at least one mattress insert element are arranged in several rows parallel to one another.

28. The mattress core according to claim 13,wherein the plurality of air channels of the at least one mattress frame element and / or the at least one mattress insert element each have a radius of approximately 0.2 cm to approximately 3 cm.

29. The mattress core according to claim 13,wherein the plurality of air channels of the at least one mattress frame element and / or the at least one mattress insert element each have a radius of approximately 0.5 cm to 1.5 cm.

30. The mattress according to claim 20,wherein at least the upper layer of the cover fabric is formed from a 3D weft-knitted fabric.

31. The mattress according to claim 19,wherein the mattress is a children's mattress.

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